| Name |
|---|
boost |
| Name |
|---|
urls |
| Name |
|---|
error_types |
grammar |
string_token |
| Name | Description |
|---|---|
authority_view | A non-owning reference to a valid authority |
decode_view | A reference to a valid, percent-encoded string |
encoding_opts | Percent-encoding options |
ignore_case_param | An optional parameter to determine case-sensitivity |
ipv4_address | An IP version 4 style address. |
ipv6_address | An IP version 6 style address. |
no_value_t | The type of no_value |
param | A query parameter |
param_pct_view | A view of a percent-encoded query parameter |
param_view | A view of a query parameter |
params_base | Common functionality for query parameter containers |
params_encoded_base | Common functionality for containers |
params_encoded_ref | A view representing query parameters in a URL |
params_encoded_view | A view representing query parameters in a URL |
params_ref | A view representing query parameters in a URL |
params_view | A view representing query parameters in a URL |
pct_string_view | A reference to a valid percent-encoded string |
segments_base | Common functionality for containers |
segments_encoded_base | Common functionality for containers |
segments_encoded_ref | A view representing path segments in a URL |
segments_encoded_view | A view representing path segments in a URL |
segments_ref | A view representing path segments in a URL |
segments_view | A view representing path segments in a URL |
static_url | A modifiable container for a URL. |
static_url_base | Common implementation for all static URLs |
url | A modifiable container for a URL. |
url_base | Common functionality for containers |
url_view | A non-owning reference to a valid URL |
url_view_base | Common functionality for containers |
format_arg | A temporary reference to a formatting argument |
named_arg | A temporary reference to a named formatting argument |
optional | The type of optional used by the library |
string_view | The type of string_view used by the library |
variant | The type of variant used by the library |
| Name | Description |
|---|---|
error | Error codes returned the library |
host_type | Identifies the type of host in a URL. |
scheme | Identifies a known URL scheme |
| Name | Description |
|---|---|
arg | Designate a named argument for a replacement field |
default_port | Return the default port for a known scheme |
encode | encode overloads |
encoded_size | Return the buffer size needed for percent-encoding |
format | Format arguments into a URL |
format_to | Format arguments into a URL |
make_pct_string_view | Return a valid percent-encoded string |
parse_absolute_uri | Return a reference to a parsed URL string |
parse_authority | Parse an authority |
parse_ipv4_address | Return an IPv4 address from an IP address string in dotted decimal form |
parse_ipv6_address | Parse a string containing an IPv6 address. |
parse_origin_form | Return a reference to a parsed URL string |
parse_path | Parse a string and return an encoded segment view |
parse_query | Parse a string and return an encoded params view |
parse_relative_ref | Return a reference to a parsed URL string |
parse_uri | Return a reference to a parsed URL string |
parse_uri_reference | Return a reference to a parsed URL string |
pct_encoded_rule | Rule for a string with percent-encoded escapes |
resolve | Resolve a URL reference against a base URL |
string_to_scheme | Return the known scheme for a non-normalized string, if known |
swap | Swap |
to_string | Return the normalized string for a known scheme |
operator<< | Stream insertion operators |
operator== | Equality operators |
operator!= | Inequality operators |
operator< | Less-than operators |
operator<= | Less-than-or-equal operators |
operator> | Greater-than operators |
operator>= | Greater-than-or-equal operators |
| Name | Description |
|---|---|
absolute_uri_rule | Rule for absolute-URI |
authority_rule | Rule for authority |
gen_delim_chars | The gen-delims character set |
ignore_case | Ignore case when comparing |
ipv4_address_rule | Rule for an IP version 4 style address |
ipv6_address_rule | Rule for An IP version 6 style address |
no_value | Constant indicating no value in a param |
origin_form_rule | Rule for origin-form |
pchars | The path character set |
query_rule | Rule for a query string |
relative_ref_rule | Rule for relative-ref |
reserved_chars | The reserved character set |
sub_delim_chars | The sub-delims character set |
unreserved_chars | The unreserved character set |
uri_reference_rule | Rule for URI-reference |
uri_rule | Rule for URI |
| Name |
|---|
error_types |
| Name | Description |
|---|---|
errc | The set of constants used for cross-platform error codes |
| Name | Description |
|---|---|
error_category | The type of error category used by the library |
error_code | The type of error code used by the library |
error_condition | The type of error condition used by the library |
result | The type of result returned by library functions |
system_error | The type of system error thrown by the library |
| Name | Description |
|---|---|
generic_category | A function to return the generic error category used by the library |
system_category | A function to return the system error category used by the library |
| Name |
|---|
string_token |
| Name | Description |
|---|---|
literal_rule | Match a string literal exactly |
lut_chars | A set of characters |
range | A forward range of parsed elements |
recycled | A thread-safe collection of instances of T |
recycled_ptr | A pointer to a shared instance of T |
string_view_base | Common functionality for string views |
unsigned_rule | Match an unsigned decimal |
aligned_storage | Provides an aligned storage buffer aligned for T |
ci_equal | A case-insensitive equals predicate for strings |
ci_hash | A case-insensitive hash function object for strings |
ci_less | A case-insensitive less predicate for strings |
is_charset | Alias for std::true_type if T satisfies CharSet. |
is_rule | Determine if T meets the requirements of Rule |
| Name | Description |
|---|---|
condition | Error conditions for errors received from rules |
error | Error codes returned when using rules |
| Name | Description |
|---|---|
ci_compare | Return the case-insensitive comparison of s0 and s1 |
ci_digest | Return the case-insensitive digest of a string |
ci_is_equal | Return true if s0 equals s1 using case-insensitive comparison |
ci_is_less | Return true if s0 is less than s1 using case-insensitive comparison |
delim_rule | delim_rule overloads |
find_if | Find the first character in the string that is in the set. |
find_if_not | Find the first character in the string that is not in CharSet |
hexdig_value | Return the decimal value of a hex character |
not_empty_rule | Match another rule, if the result is not empty |
operator+ | Return the union of two character sets. |
operator- | Return a new character set by subtracting |
optional_rule | Match a rule, or the empty string |
parse | Parse a character buffer using a rule |
range_rule | Match a repeating number of elements |
ref | ref overloads |
squelch | Squelch the value of a rule |
to_lower | Return c converted to lowercase |
to_upper | Return c converted to uppercase |
token_rule | Match a non-empty string of characters from a set |
tuple_rule | Match a series of rules in order |
variant_rule | Match one of a set of rules |
operator<< | Format a string to an output stream |
operator== | Compare two string views for equality |
operator!= | Compare two string views for inequality |
operator< | Compare two string views for less than |
operator<= | Compare two string views for less than or equal |
operator> | Compare two string views for greater than |
operator>= | Compare two string views for greater than or equal |
| Name | Description |
|---|---|
all_chars | The set of all characters |
alnum_chars | The set of letters and digits |
alpha_chars | The set of all letters |
dec_octet_rule | Match a decimal octet |
digit_chars | The set of decimal digits |
hexdig_chars | The set of hexadecimal digits |
vchars | The set of visible characters |
| Name | Description |
|---|---|
CharSet | Concept for a CharSet |
Rule | Concept for a grammar Rule |
| Name | Description |
|---|---|
arg | Base class for string tokens, and algorithm parameters |
is_token | Trait to determine if a type is a string token |
return_string | A string token for returning a plain string |
| Name | Description |
|---|---|
append_to | Create a string token for appending to a plain string |
assign_to | Create a string token for assigning to a plain string |
preserve_size | Create a string token for a durable core::string_view |
| Name | Description |
|---|---|
StringToken | Concept for a string token |
| Name |
|---|
urls |
| Name |
|---|
error_types |
grammar |
string_token |
| Name | Description |
|---|---|
authority_view | A non-owning reference to a valid authority |
decode_view | A reference to a valid, percent-encoded string |
encoding_opts | Percent-encoding options |
ignore_case_param | An optional parameter to determine case-sensitivity |
ipv4_address | An IP version 4 style address. |
ipv6_address | An IP version 6 style address. |
no_value_t | The type of no_value |
param | A query parameter |
param_pct_view | A view of a percent-encoded query parameter |
param_view | A view of a query parameter |
params_base | Common functionality for query parameter containers |
params_encoded_base | Common functionality for containers |
params_encoded_ref | A view representing query parameters in a URL |
params_encoded_view | A view representing query parameters in a URL |
params_ref | A view representing query parameters in a URL |
params_view | A view representing query parameters in a URL |
pct_string_view | A reference to a valid percent-encoded string |
segments_base | Common functionality for containers |
segments_encoded_base | Common functionality for containers |
segments_encoded_ref | A view representing path segments in a URL |
segments_encoded_view | A view representing path segments in a URL |
segments_ref | A view representing path segments in a URL |
segments_view | A view representing path segments in a URL |
static_url | A modifiable container for a URL. |
static_url_base | Common implementation for all static URLs |
url | A modifiable container for a URL. |
url_base | Common functionality for containers |
url_view | A non-owning reference to a valid URL |
url_view_base | Common functionality for containers |
format_arg | A temporary reference to a formatting argument |
named_arg | A temporary reference to a named formatting argument |
optional | The type of optional used by the library |
string_view | The type of string_view used by the library |
variant | The type of variant used by the library |
| Name | Description |
|---|---|
error | Error codes returned the library |
host_type | Identifies the type of host in a URL. |
scheme | Identifies a known URL scheme |
| Name | Description |
|---|---|
arg | Designate a named argument for a replacement field |
default_port | Return the default port for a known scheme |
encode | encode overloads |
encoded_size | Return the buffer size needed for percent-encoding |
format | Format arguments into a URL |
format_to | Format arguments into a URL |
make_pct_string_view | Return a valid percent-encoded string |
parse_absolute_uri | Return a reference to a parsed URL string |
parse_authority | Parse an authority |
parse_ipv4_address | Return an IPv4 address from an IP address string in dotted decimal form |
parse_ipv6_address | Parse a string containing an IPv6 address. |
parse_origin_form | Return a reference to a parsed URL string |
parse_path | Parse a string and return an encoded segment view |
parse_query | Parse a string and return an encoded params view |
parse_relative_ref | Return a reference to a parsed URL string |
parse_uri | Return a reference to a parsed URL string |
parse_uri_reference | Return a reference to a parsed URL string |
pct_encoded_rule | Rule for a string with percent-encoded escapes |
resolve | Resolve a URL reference against a base URL |
string_to_scheme | Return the known scheme for a non-normalized string, if known |
swap | Swap |
to_string | Return the normalized string for a known scheme |
operator<< | Stream insertion operators |
operator== | Equality operators |
operator!= | Inequality operators |
operator< | Less-than operators |
operator<= | Less-than-or-equal operators |
operator> | Greater-than operators |
operator>= | Greater-than-or-equal operators |
| Name | Description |
|---|---|
absolute_uri_rule | Rule for absolute-URI |
authority_rule | Rule for authority |
gen_delim_chars | The gen-delims character set |
ignore_case | Ignore case when comparing |
ipv4_address_rule | Rule for an IP version 4 style address |
ipv6_address_rule | Rule for An IP version 6 style address |
no_value | Constant indicating no value in a param |
origin_form_rule | Rule for origin-form |
pchars | The path character set |
query_rule | Rule for a query string |
relative_ref_rule | Rule for relative-ref |
reserved_chars | The reserved character set |
sub_delim_chars | The sub-delims character set |
unreserved_chars | The unreserved character set |
uri_reference_rule | Rule for URI-reference |
uri_rule | Rule for URI |
| Name |
|---|
error_types |
| Name | Description |
|---|---|
errc | The set of constants used for cross-platform error codes |
| Name | Description |
|---|---|
error_category | The type of error category used by the library |
error_code | The type of error code used by the library |
error_condition | The type of error condition used by the library |
result | The type of result returned by library functions |
system_error | The type of system error thrown by the library |
| Name | Description |
|---|---|
generic_category | A function to return the generic error category used by the library |
system_category | A function to return the system error category used by the library |
The set of constants used for cross-platform error codes
This alias is no longer supported and should not be used in new code. Please use core::string_view instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
The type of error category used by the library
<boost/url/error_types.hpp>
using error_category = boost::system::error_category;
This alias is no longer supported and should not be used in new code. Please use system::error_category instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
The type of error code used by the library
This alias is no longer supported and should not be used in new code. Please use system::error_code instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
The type of error condition used by the library
<boost/url/error_types.hpp>
using error_condition = boost::system::error_condition;
This alias is no longer supported and should not be used in new code. Please use system::error_condition instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
The type of result returned by library functions
<boost/url/error_types.hpp>
template<class T>
using result = boost::system::result<T, system::error_code>;
This alias is no longer supported and should not be used in new code. Please use system::result instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
This is an alias template used as the return type for functions that can either return a container, or fail with an error code. This is a brief synopsis of the type:
template< class T >
class result
{
public:
//
// Return true if the result contains an error
//
constexpr bool has_error() const noexcept;
//
// Return the error
//
constexpr system::error_code error() const noexcept;
//
// Return true if the result contains a value
//
constexpr bool has_value() const noexcept;
constexpr explicit operator bool() const noexcept;
//
// Return the value, or throw an exception
//
constexpr T& value();
constexpr T const& value() const;
// Return the value.
// Precondition: has_value()==true
//
constexpr T& operator*() noexcept;
constexpr T* operator->() noexcept;
constexpr T const& operator*() const noexcept;
constexpr T const* operator->() const noexcept;
...more
Given the function parse_uri with this signature:
system::result< url_view > parse_uri( core::string_view s ) noexcept;
The following statement captures the value in a variable upon success, otherwise throws:
url_view u = parse_uri( "http://example.com/path/to/file.txt" ).value();
This statement captures the result in a local variable and inspects the error condition:
system::result< url_view > rv = parse_uri( "http://example.com/path/to/file.txt" );
if(! rv )
std::cout << rv.error();
else
std::cout << *rv;
| Name | Description |
|---|---|
| T | The type of value held by the result. |
The type of system error thrown by the library
This alias is no longer supported and should not be used in new code. Please use system::system_error instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
A function to return the generic error category used by the library
This alias is no longer supported and should not be used in new code. Please use core::string_view instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
A function to return the system error category used by the library
This alias is no longer supported and should not be used in new code. Please use core::string_view instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
| Name |
|---|
string_token |
| Name | Description |
|---|---|
literal_rule | Match a string literal exactly |
lut_chars | A set of characters |
range | A forward range of parsed elements |
recycled | A thread-safe collection of instances of T |
recycled_ptr | A pointer to a shared instance of T |
string_view_base | Common functionality for string views |
unsigned_rule | Match an unsigned decimal |
aligned_storage | Provides an aligned storage buffer aligned for T |
ci_equal | A case-insensitive equals predicate for strings |
ci_hash | A case-insensitive hash function object for strings |
ci_less | A case-insensitive less predicate for strings |
is_charset | Alias for std::true_type if T satisfies CharSet. |
is_rule | Determine if T meets the requirements of Rule |
| Name | Description |
|---|---|
condition | Error conditions for errors received from rules |
error | Error codes returned when using rules |
| Name | Description |
|---|---|
ci_compare | Return the case-insensitive comparison of s0 and s1 |
ci_digest | Return the case-insensitive digest of a string |
ci_is_equal | Return true if s0 equals s1 using case-insensitive comparison |
ci_is_less | Return true if s0 is less than s1 using case-insensitive comparison |
delim_rule | delim_rule overloads |
find_if | Find the first character in the string that is in the set. |
find_if_not | Find the first character in the string that is not in CharSet |
hexdig_value | Return the decimal value of a hex character |
not_empty_rule | Match another rule, if the result is not empty |
operator+ | Return the union of two character sets. |
operator- | Return a new character set by subtracting |
optional_rule | Match a rule, or the empty string |
parse | Parse a character buffer using a rule |
range_rule | Match a repeating number of elements |
ref | ref overloads |
squelch | Squelch the value of a rule |
to_lower | Return c converted to lowercase |
to_upper | Return c converted to uppercase |
token_rule | Match a non-empty string of characters from a set |
tuple_rule | Match a series of rules in order |
variant_rule | Match one of a set of rules |
operator<< | Format a string to an output stream |
operator== | Compare two string views for equality |
operator!= | Compare two string views for inequality |
operator< | Compare two string views for less than |
operator<= | Compare two string views for less than or equal |
operator> | Compare two string views for greater than |
operator>= | Compare two string views for greater than or equal |
| Name | Description |
|---|---|
all_chars | The set of all characters |
alnum_chars | The set of letters and digits |
alpha_chars | The set of all letters |
dec_octet_rule | Match a decimal octet |
digit_chars | The set of decimal digits |
hexdig_chars | The set of hexadecimal digits |
vchars | The set of visible characters |
| Name | Description |
|---|---|
CharSet | Concept for a CharSet |
Rule | Concept for a grammar Rule |
<boost/url/grammar/string_token.hpp>
namespace string_token = boost::urls::string_token;
Provides an aligned storage buffer aligned for T
<boost/url/grammar/recycled.hpp>
template<class T>
using aligned_storage = /* implementation-defined */;
template<class T>
struct aligned_storage
{
/// Return a pointer to the aligned storage area
void* addr() noexcept;
/// Return a pointer to the aligned storage area
void const* addr() const noexcept;
};
A case-insensitive equals predicate for strings
<boost/url/grammar/ci_string.hpp>
using ci_equal = /* implementation-defined */;
The function object returns true when two strings are equal, ignoring case. This is a suitable equality predicate for unordered containers. The function is defined only for strings containing low-ASCII characters.
boost::unordered_map< std::string, std::string, ci_hash, ci_equal > m1;
std::unordered_map < std::string, std::string, ci_hash, ci_equal > m2; // (since C++20)
A case-insensitive hash function object for strings
<boost/url/grammar/ci_string.hpp>
using ci_hash = /* implementation-defined */;
The hash function is non-cryptographic and not hardened against algorithmic complexity attacks. This is a suitable hash function for unordered containers. The function is defined only for strings containing low-ASCII characters.
boost::unordered_map< std::string, std::string, ci_hash, ci_equal > m1;
std::unordered_map < std::string, std::string, ci_hash, ci_equal > m2; // (since C++20)
A case-insensitive less predicate for strings
<boost/url/grammar/ci_string.hpp>
using ci_less = /* implementation-defined */;
The comparison algorithm implements a case-insensitive total order on the set of all ASCII strings; however, it is not a lexicographical comparison. This is a suitable predicate for ordered containers. The function is defined only for strings containing low-ASCII characters.
boost::container::map< std::string, std::string, ci_less > m1;
std::map< std::string, std::string, ci_less > m2; // (since C++14)
Alias for std::true_type if T satisfies CharSet.
<boost/url/grammar/charset.hpp>
template<class T>
using is_charset = /* implementation-defined */;
This metafunction determines if the type T meets these requirements of CharSet:
An instance of `T` is invocable with this equivalent function signature:
bool T::operator()( char ) const noexcept;
Use with enable_if on the return value:
template< class CharSet >
typename std::enable_if< is_charset<T>::value >::type
func( CharSet const& cs );
| Name | Description |
|---|---|
| T | the type to check. |
Determine if T meets the requirements of Rule
<boost/url/grammar/type_traits.hpp>
template<class T>
using is_rule = /* implementation-defined */;
This is an alias for std::true_type if T meets the requirements, otherwise it is an alias for std::false_type.
struct U
{
struct value_type;
auto
parse(
char const*& it,
char const* end) const ->
system::result<value_type>
};
static_assert( is_rule<U>::value, "Requirements not met" );
Match a string literal exactly
| Name |
|---|
value_type |
| Name | Description |
|---|---|
literal_rule [constructor] | Construct from char |
parse |
If there is no more input, or if the end of the input is reached, and a prefix of the literal matches exactly, the error returned is error::need_more.
using value_type = core::string_view;
Rules are used with the function parse.
system::result< core::string_view > rv = parse( "HTTP", literal_rule( "HTTP" ) );
Construct from char
<boost/url/grammar/literal_rule.hpp>
constexpr
explicit
literal_rule(char const* s) noexcept;
| Name | Description |
|---|---|
| s | The value to construct from |
<boost/url/grammar/literal_rule.hpp>
system::result<value_type>
parse(
char const*& it,
char const* end) const noexcept;
A set of characters
| Name | Description |
|---|---|
lut_chars [constructor] | Constructors |
operator() | Return true if ch is in the character set. |
operator~ | Return a new character set which is the complement of another character set. |
| Name | Description |
|---|---|
operator- |
Return a new character set by subtracting |
operator+ |
Return the union of two character sets. |
The characters defined by instances of this set are provided upon construction. The constexpr implementation allows these to become compile-time constants.
Character sets are used with rules and the functions find_if and find_if_not.
constexpr lut_chars vowel_chars = "AEIOU" "aeiou";
system::result< core::string_view > rv = parse( "Aiea", token_rule( vowel_chars ) );
Constructors
<boost/url/grammar/lut_chars.hpp>Constructor
constexpr
lut_chars(char ch) noexcept;
» more...
Constructor
constexpr
lut_chars(char const* s) noexcept;
» more...
Constructor.
template<class Pred>
requires detail::is_pred<Pred>::value &&
! std::is_base_of<
lut_chars, Pred>::value
constexpr
lut_chars(Pred const& pred) noexcept;
» more...
| Name | Description |
|---|---|
| ch | A character. |
| s | A null-terminated string. |
| pred | The function object to use for determining membership in the character set. |
Constructor
This function constructs a character set which has as a single member, the character ch.
constexpr lut_chars asterisk( '*' );
Constant.
Throws nothing.
| Name | Description |
|---|---|
| ch | A character. |
Constructor
This function constructs a character set which has as members, all of the characters present in the null-terminated string s.
constexpr lut_chars digits = "0123456789";
Linear in ::strlen(s), or constant if s is a constant expression.
Throws nothing.
| Name | Description |
|---|---|
| s | A null-terminated string. |
Constructor.
<boost/url/grammar/lut_chars.hpp>
template<class Pred>
requires detail::is_pred<Pred>::value &&
! std::is_base_of<
lut_chars, Pred>::value
constexpr
lut_chars(Pred const& pred) noexcept;
This function constructs a character set which has as members, every value of char ch for which the expression pred(ch) returns true.
struct is_digit
{
constexpr bool
operator()(char c ) const noexcept
{
return c >= '0' && c <= '9';
}
};
constexpr lut_chars digits( is_digit{} );
Linear in pred, or constant if pred(ch) is a constant expression.
Throws nothing.
| Name | Description |
|---|---|
| pred | The function object to use for determining membership in the character set. |
Return true if ch is in the character set.
<boost/url/grammar/lut_chars.hpp>Return true if ch is in the character set.
constexpr
bool
operator()(char ch) const noexcept;
» more...
Return true if ch is in the character set.
constexpr
bool
operator()(unsigned char ch) const noexcept;
» more...
true if ch is in the set.
| Name | Description |
|---|---|
| ch | The character to test. |
Return true if ch is in the character set.
<boost/url/grammar/lut_chars.hpp>
constexpr
bool
operator()(char ch) const noexcept;
This function returns true if the character ch is in the set, otherwise it returns false.
Constant.
Throws nothing.
true if ch is in the set.
| Name | Description |
|---|---|
| ch | The character to test. |
Return true if ch is in the character set.
<boost/url/grammar/lut_chars.hpp>
constexpr
bool
operator()(unsigned char ch) const noexcept;
This function returns true if the character ch is in the set, otherwise it returns false.
Constant.
Throws nothing.
true if ch is in the set.
| Name | Description |
|---|---|
| ch | The character to test. |
Return a new character set which is the complement of another character set.
<boost/url/grammar/lut_chars.hpp>
constexpr
lut_chars
operator~() const noexcept;
This function returns a new character set which contains all of the characters that are not in *this.
This statement declares a character set containing everything but vowels:
constexpr lut_chars not_vowels = ~lut_chars( "AEIOU" "aeiou" );
Constant.
Throws nothing.
A forward range of parsed elements
| Name | Description |
|---|---|
iterator | A constant, forward iterator to elements of the range |
const_iterator | A constant, forward iterator to elements of the range |
const_reference | The type of each element of the range |
difference_type | The type used to represent signed integers |
pointer | Provided for compatibility, unused |
reference | The type of each element of the range |
size_type | The type used to represent unsigned integers |
value_type | The type of each element of the range |
| Name | Description |
|---|---|
range [constructor] | Constructor |
~range [destructor] | Destructor |
operator= | Assignment |
begin | Return an iterator to the beginning |
empty | Return true if the range is empty |
end | Return an iterator to the end |
size | Return the number of elements in the range |
string | Return the matching part of the string |
Objects of this type are forward ranges returned when parsing using the range_rule. Iteration is performed by re-parsing the underlying character buffer. Ownership of the buffer is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced by the range.
The implementation may use temporary, recycled storage for type-erasure. Objects of type range are intended to be used ephemerally. That is, for short durations such as within a function scope. If it is necessary to store the range for a long period of time or with static storage duration, it is necessary to copy the contents to an object of a different type.
| Name | Description |
|---|---|
| T | The value type of the range |
A constant, forward iterator to elements of the range
The type of each element of the range
The type used to represent signed integers
Provided for compatibility, unused
The type of each element of the range
The type used to represent unsigned integers
The type of each element of the range
A constant, forward iterator to elements of the range
| Name | Description |
|---|---|
range |
A forward range of parsed elements |
Constructor
<boost/url/grammar/range_rule.hpp>Constructor
range() noexcept;
» more...
Constructor
range(range const& other) noexcept;
» more...
Constructor
range(range&& other) noexcept;
» more...
Constructor
Default-constructed ranges have zero elements.
Throws nothing.
Constructor
The copy references the same underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
Throws nothing.
| Name | Description |
|---|---|
| other | The object to copy construct from |
Constructor
The new range references the same underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced. The moved-from object becomes as if default-constructed.
Throws nothing.
| Name | Description |
|---|---|
| other | The object to move construct from |
Destructor
Assignment
<boost/url/grammar/range_rule.hpp>Assignment
range&
operator=(range const& other) noexcept;
» more...
Assignment
range&
operator=(range&& other) noexcept;
» more...
*this
Assignment
<boost/url/grammar/range_rule.hpp>
range&
operator=(range const& other) noexcept;
The copy references the same underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
Throws nothing.
*this
| Name | Description |
|---|---|
| other | The object to copy assign from |
Assignment
After the move, this references the same underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced. The moved-from object becomes as if default-constructed.
Throws nothing.
*this
| Name | Description |
|---|---|
| other | The object to move assign from |
Return an iterator to the beginning
Return true if the range is empty
true if the range is empty
Return an iterator to the end
Return the number of elements in the range
Return the matching part of the string
A thread-safe collection of instances of T
| Name | Description |
|---|---|
recycled [constructor] | Constructor |
~recycled [destructor] | Destructor |
| Name | Description |
|---|---|
recycled_ptr |
A pointer to a shared instance of T |
Instances of this type may be used to control where recycled instances of T come from when used with recycled_ptr.
static recycled< std::string > bin;
recycled_ptr< std::string > ps( bin );
// Put the string into a known state
ps->clear();
Constructor
Destructor
All recycled instances of T are destroyed. Undefined behavior results if there are any recycled_ptr which reference this recycle bin.
A pointer to a shared instance of T
| Name | Description |
|---|---|
recycled_ptr [constructor] | Constructor |
~recycled_ptr [destructor] | Destructor |
operator= | Assignment |
acquire | Return the referenced object |
bin | Return the referenced recycle bin |
empty | Return true if this does not reference an object |
get | Return the referenced object |
operator* | Return the referenced object |
operator-> | Return the referenced object |
release | Release the referenced object |
operator bool | Return true if this references an object |
| Name | Description |
|---|---|
recycled |
A thread-safe collection of instances of T |
This is a smart pointer container which can acquire shared ownership of an instance of T upon or after construction. The instance is guaranteed to be in a valid, but unknown state. Every recycled pointer references a valid recycle bin.
static recycled< std::string > bin;
recycled_ptr< std::string > ps( bin );
// Put the string into a known state
ps->clear();
| Name | Description |
|---|---|
| T | the type of object to acquire, which must be DefaultConstructible. |
Constructor
<boost/url/grammar/recycled.hpp>Constructor
recycled_ptr();
» more...
Constructor
recycled_ptr(recycled_ptr const& other) noexcept;
» more...
Constructor
recycled_ptr(recycled_ptr&& other) noexcept;
» more...
Constructor
recycled_ptr(std::nullptr_t value) noexcept;
» more...
Constructor
explicit
recycled_ptr(recycled<T>& bin);
» more...
Constructor
recycled_ptr(
recycled<T>& bin,
std::nullptr_t) noexcept;
» more...
| Name | Description |
|---|---|
| other | The pointer to copy |
| bin | The recycle bin to use |
Constructor
Upon construction, this acquires exclusive access to an object of type T which is either recycled from a global recycle bin, or newly allocated. The object is in an unknown but valid state.
recycled_ptr< std::string > ps;
// Put the string into a known state
ps->clear();
&this->bin() != nullptr && ! this->empty()
Constructor
<boost/url/grammar/recycled.hpp>
recycled_ptr(recycled_ptr const& other) noexcept;
If other references an object, the newly constructed pointer acquires shared ownership. Otherwise this is empty. The new pointer references the same recycle bin as other.
&this->bin() == &other->bin() && this->get() == other.get()
Throws nothing.
| Name | Description |
|---|---|
| other | The pointer to copy |
Constructor
If other references an object, ownership is transferred including a reference to the recycle bin. After the move, the moved-from object is empty.
&this->bin() == &other->bin() && ! this->empty() && other.empty()
Throws nothing.
| Name | Description |
|---|---|
| other | The pointer to move from |
Constructor
After construction, this is empty and refers to a global recycle bin.
recycled_ptr< std::string > ps( nullptr );
// Acquire a string and put it into a known state
ps->acquire();
ps->clear();
&this->bin() != nullptr && this->empty()
Throws nothing.
| Name | Description |
|---|---|
| value | The object to construct from |
Constructor
Upon construction, this acquires exclusive access to an object of type T which is either recycled from the specified bin, or newly allocated. The object is in an unknown but valid state.
static recycled< std::string > bin;
recycled_ptr< std::string > ps( bin );
// Put the string into a known state
ps->clear();
&this->bin() == &bin && ! this->empty()
| Name | Description |
|---|---|
| bin | The recycle bin to use |
Constructor
<boost/url/grammar/recycled.hpp>
recycled_ptr(
recycled<T>& bin,
std::nullptr_t) noexcept;
After construction, this is empty and refers to the specified recycle bin.
static recycled< std::string > bin;
recycled_ptr< std::string > ps( bin, nullptr );
// Acquire a string and put it into a known state
ps->acquire();
ps->clear();
&this->bin() == &bin && this->empty()
Throws nothing.
| Name | Description |
|---|---|
| bin | The recycle bin to use |
Destructor
If this is not empty, shared ownership of the pointee is released. If this was the last reference, the object is returned to the original recycle bin.
this->release();
Assignment
<boost/url/grammar/recycled.hpp>Assignment
recycled_ptr&
operator=(recycled_ptr const& other) noexcept;
» more...
Assignment
recycled_ptr&
operator=(recycled_ptr&& other) noexcept;
» more...
*this
| Name | Description |
|---|---|
| other | The pointer to copy from |
Assignment
<boost/url/grammar/recycled.hpp>
recycled_ptr&
operator=(recycled_ptr const& other) noexcept;
If other references an object, this acquires shared ownership and references the same recycle bin as other. The previous object if any is released.
this->release()
&this->bin() == &other->bin() && this->get() == other.get()
Throws nothing.
*this
| Name | Description |
|---|---|
| other | The pointer to copy from |
Assignment
<boost/url/grammar/recycled.hpp>
recycled_ptr&
operator=(recycled_ptr&& other) noexcept;
If other references an object, ownership is transferred including a reference to the recycle bin. After the move, the moved-from object is empty.
this->release()
&this->bin() == &other->bin()
Throws nothing.
*this
| Name | Description |
|---|---|
| other | The pointer to move from |
Return the referenced object
If this references an object, it is returned. Otherwise, exclusive ownership of a new object of type T is acquired and returned.
not this->empty()
Return the referenced recycle bin
Throws nothing.
Return true if this does not reference an object
Throws nothing.
p_ == nullptr
Return the referenced object
If this is empty, nullptr is returned.
Throws nothing.
Return the referenced object
not this->empty()
Return the referenced object
If this is empty, nullptr is returned.
Throws nothing.
Release the referenced object
If this references an object, it is released to the referenced recycle bin. The pointer continues to reference the same recycle bin.
this->empty()
Throws nothing.
Return true if this references an object
return ! this->empty();
Throws nothing.
!this->empty()
Common functionality for string views
| Name | Description |
|---|---|
const_iterator | The const iterator type |
const_pointer | The const pointer type |
const_reference | The const reference type |
const_reverse_iterator | The const reverse iterator type |
difference_type | The difference type |
iterator | The iterator type |
pointer | The pointer type |
reference | The reference type |
reverse_iterator | The reverse iterator type |
size_type | The size type |
traits_type | The character traits |
value_type | The value type |
| Name | Description |
|---|---|
at | Access a character |
back | Return the last character |
begin | Return an iterator to the beginning |
cbegin | Return an iterator to the beginning |
cend | Return an iterator to the end |
compare | Return the result of comparing to another string |
contains | Return true if matching characters are found |
copy | Copy the characters to another buffer |
crbegin | Return a reverse iterator to the end |
crend | Return a reverse iterator to the beginning |
data | Return a pointer to the character buffer |
empty | Return true if the string is empty |
end | Return an iterator to the end |
ends_with | Return true if a matching suffix exists |
find | Return the position of matching characters |
find_first_not_of | Return the position of the first non-match |
find_first_of | Return the position of the first match |
find_last_not_of | Return the position of the last non-match |
find_last_of | Return the position of the last match |
front | Return the first character |
length | Return the size |
max_size | Return the maximum allowed size |
operator[] | Access a character |
rbegin | Return a reverse iterator to the end |
rend | Return a reverse iterator to the beginning |
rfind | Return the position of matching characters |
size | Return the size |
starts_with | Return true if a matching prefix exists |
substr | Return a view to part of the string |
operator std::string | Conversion |
operator std::string_view | Conversion |
| Name | Description |
|---|---|
npos | A constant used to represent "no position" |
| Name | Description |
|---|---|
string_view_base [constructor] | Constructor |
operator= | Assignment |
swap | Swap |
| Name | Description |
|---|---|
s_ | The referenced character buffer |
| Name | Description |
|---|---|
operator<< |
Format a string to an output stream |
operator>= |
Compare two string views for greater than or equal |
operator> |
Compare two string views for greater than |
operator<= |
Compare two string views for less than or equal |
operator< |
Compare two string views for less than |
operator!= |
Compare two string views for inequality |
operator== |
Compare two string views for equality |
| Name | Description |
|---|---|
pct_string_view
| A reference to a valid percent-encoded string |
This base class is used to provide common member functions for reference types that behave like string views. This cannot be instantiated directly; instead, derive from the type and provide constructors which offer any desired preconditions and invariants.
The const iterator type
The const pointer type
The const reference type
The const reverse iterator type
<boost/url/grammar/string_view_base.hpp>
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
The difference type
<boost/url/grammar/string_view_base.hpp>
typedef std::ptrdiff_t difference_type;
The iterator type
The pointer type
The reference type
The reverse iterator type
<boost/url/grammar/string_view_base.hpp>
typedef const_reverse_iterator reverse_iterator;
The size type
The character traits
<boost/url/grammar/string_view_base.hpp>
typedef std::char_traits<char> traits_type;
The value type
Access a character
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reference
at(size_type pos) const;
See core::string_view::at
| Name | Description |
|---|---|
| pos | The position to access |
Return the last character
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reference
back() const noexcept;
See core::string_view::back
Return an iterator to the beginning
<boost/url/grammar/string_view_base.hpp>
constexpr
const_iterator
begin() const noexcept;
See core::string_view::begin
Return an iterator to the beginning
<boost/url/grammar/string_view_base.hpp>
constexpr
const_iterator
cbegin() const noexcept;
See core::string_view::cbegin
Return an iterator to the end
<boost/url/grammar/string_view_base.hpp>
constexpr
const_iterator
cend() const noexcept;
See core::string_view::cend
Return the result of comparing to another string
<boost/url/grammar/string_view_base.hpp>Return the result of comparing to another string
constexpr
int
compare(core::string_view str) const noexcept;
» more...
Return the result of comparing to another string
constexpr
int
compare(char const* s) const noexcept;
» more...
Return the result of comparing to another string
constexpr
int
compare(
size_type pos1,
size_type n1,
core::string_view str) const;
» more...
Return the result of comparing to another string
constexpr
int
compare(
size_type pos1,
size_type n1,
char const* s) const;
» more...
Return the result of comparing to another string
constexpr
int
compare(
size_type pos1,
size_type n1,
char const* s,
size_type n2) const;
» more...
Return the result of comparing to another string
constexpr
int
compare(
size_type pos1,
size_type n1,
core::string_view str,
size_type pos2,
size_type n2) const;
» more...
| Name | Description |
|---|---|
| str | The string to compare |
| s | The string to compare |
| pos1 | The position to start comparing from |
| n1 | The number of characters to compare |
| n2 | The number of characters to compare |
| pos2 | The position to start comparing from |
Return the result of comparing to another string
<boost/url/grammar/string_view_base.hpp>
constexpr
int
compare(core::string_view str) const noexcept;
See core::string_view::compare
| Name | Description |
|---|---|
| str | The string to compare |
Return the result of comparing to another string
<boost/url/grammar/string_view_base.hpp>
constexpr
int
compare(char const* s) const noexcept;
See core::string_view::compare
| Name | Description |
|---|---|
| s | The string to compare |
Return the result of comparing to another string
<boost/url/grammar/string_view_base.hpp>
constexpr
int
compare(
size_type pos1,
size_type n1,
core::string_view str) const;
See core::string_view::compare
| Name | Description |
|---|---|
| pos1 | The position to start comparing from |
| n1 | The number of characters to compare |
| str | The string to compare |
Return the result of comparing to another string
<boost/url/grammar/string_view_base.hpp>
constexpr
int
compare(
size_type pos1,
size_type n1,
char const* s) const;
See core::string_view::compare
| Name | Description |
|---|---|
| pos1 | The position to start comparing from |
| n1 | The number of characters to compare |
| s | The string to compare |
Return the result of comparing to another string
<boost/url/grammar/string_view_base.hpp>
constexpr
int
compare(
size_type pos1,
size_type n1,
char const* s,
size_type n2) const;
See core::string_view::compare
| Name | Description |
|---|---|
| pos1 | The position to start comparing from |
| n1 | The number of characters to compare |
| s | The string to compare |
| n2 | The number of characters to compare |
Return the result of comparing to another string
<boost/url/grammar/string_view_base.hpp>
constexpr
int
compare(
size_type pos1,
size_type n1,
core::string_view str,
size_type pos2,
size_type n2) const;
See core::string_view::compare
| Name | Description |
|---|---|
| pos1 | The position to start comparing from |
| n1 | The number of characters to compare |
| str | The string to compare |
| pos2 | The position to start comparing from |
| n2 | The number of characters to compare |
Return true if matching characters are found
<boost/url/grammar/string_view_base.hpp>Return true if matching characters are found
constexpr
bool
contains(core::string_view sv) const noexcept;
» more...
Return true if matching characters are found
constexpr
bool
contains(char c) const noexcept;
» more...
Return true if matching characters are found
constexpr
bool
contains(char const* s) const noexcept;
» more...
true if the string contains the characters, otherwise falsetrue if the string contains the character, otherwise false| Name | Description |
|---|---|
| sv | The string to search for |
| c | The character to search for |
| s | The string to search for |
Return true if matching characters are found
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
contains(core::string_view sv) const noexcept;
See core::string_view::contains
true if the string contains the characters, otherwise false
| Name | Description |
|---|---|
| sv | The string to search for |
Return true if matching characters are found
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
contains(char c) const noexcept;
See core::string_view::contains
true if the string contains the character, otherwise false
| Name | Description |
|---|---|
| c | The character to search for |
Return true if matching characters are found
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
contains(char const* s) const noexcept;
See core::string_view::contains
true if the string contains the characters, otherwise false
| Name | Description |
|---|---|
| s | The string to search for |
Copy the characters to another buffer
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
copy(
char* s,
size_type n,
size_type pos = 0) const;
See core::string_view::copy
| Name | Description |
|---|---|
| s | The destination buffer |
| n | The number of characters to copy |
| pos | The position to start from |
Return a reverse iterator to the end
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reverse_iterator
crbegin() const noexcept;
See core::string_view::crbegin
Return a reverse iterator to the beginning
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reverse_iterator
crend() const noexcept;
See core::string_view::crend
Return a pointer to the character buffer
<boost/url/grammar/string_view_base.hpp>
constexpr
const_pointer
data() const noexcept;
See core::string_view::data
Return true if the string is empty
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
empty() const noexcept;
See core::string_view::size
true if the string is empty
Return an iterator to the end
<boost/url/grammar/string_view_base.hpp>
constexpr
const_iterator
end() const noexcept;
See core::string_view::end
Return true if a matching suffix exists
<boost/url/grammar/string_view_base.hpp>Return true if a matching suffix exists
constexpr
bool
ends_with(core::string_view x) const noexcept;
» more...
Return true if a matching suffix exists
constexpr
bool
ends_with(char x) const noexcept;
» more...
Return true if a matching suffix exists
constexpr
bool
ends_with(char const* x) const noexcept;
» more...
true if the suffix matches
| Name | Description |
|---|---|
| x | The string to search for |
Return true if a matching suffix exists
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
ends_with(core::string_view x) const noexcept;
See core::string_view::ends_with
true if the suffix matches
| Name | Description |
|---|---|
| x | The string to search for |
Return true if a matching suffix exists
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
ends_with(char x) const noexcept;
See core::string_view::ends_with
true if the suffix matches
| Name | Description |
|---|---|
| x | The character to search for |
Return true if a matching suffix exists
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
ends_with(char const* x) const noexcept;
See core::string_view::ends_with
true if the suffix matches
| Name | Description |
|---|---|
| x | The string to search for |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>Return the position of matching characters
constexpr
size_type
find(
core::string_view str,
size_type pos = 0) const noexcept;
» more...
Return the position of matching characters
constexpr
size_type
find(
char c,
size_type pos = 0) const noexcept;
» more...
Return the position of matching characters
constexpr
size_type
find(
char const* s,
size_type pos = 0) const noexcept;
» more...
Return the position of matching characters
constexpr
size_type
find(
char const* s,
size_type pos,
size_type n) const noexcept;
» more...
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
| c | The character to search for |
| s | The characters to search for |
| n | The number of characters to search for |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find(
core::string_view str,
size_type pos = 0) const noexcept;
See core::string_view::find
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find(
char c,
size_type pos = 0) const noexcept;
See core::string_view::find
| Name | Description |
|---|---|
| c | The character to search for |
| pos | The position to start searching from |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find(
char const* s,
size_type pos = 0) const noexcept;
See core::string_view::find
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find(
char const* s,
size_type pos,
size_type n) const noexcept;
See core::string_view::find
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
| n | The number of characters to search for |
Return the position of the first non-match
<boost/url/grammar/string_view_base.hpp>Return the position of the first non-match
constexpr
size_type
find_first_not_of(
core::string_view str,
size_type pos = 0) const noexcept;
» more...
Return the position of the first non-match
constexpr
size_type
find_first_not_of(
char c,
size_type pos = 0) const noexcept;
» more...
Return the position of the first non-match
constexpr
size_type
find_first_not_of(
char const* s,
size_type pos = 0) const noexcept;
» more...
Return the position of the first non-match
constexpr
size_type
find_first_not_of(
char const* s,
size_type pos,
size_type n) const noexcept;
» more...
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
| c | The character to search for |
| s | The characters to search for |
| n | The number of characters to search for |
Return the position of the first non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_not_of(
core::string_view str,
size_type pos = 0) const noexcept;
See core::string_view::find_first_not_of
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
Return the position of the first non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_not_of(
char c,
size_type pos = 0) const noexcept;
See core::string_view::find_first_not_of
| Name | Description |
|---|---|
| c | The character to search for |
| pos | The position to start searching from |
Return the position of the first non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_not_of(
char const* s,
size_type pos = 0) const noexcept;
See core::string_view::find_first_not_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
Return the position of the first non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_not_of(
char const* s,
size_type pos,
size_type n) const noexcept;
See core::string_view::find_first_not_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
| n | The number of characters to search for |
Return the position of the first match
<boost/url/grammar/string_view_base.hpp>Return the position of the first match
constexpr
size_type
find_first_of(
core::string_view str,
size_type pos = 0) const noexcept;
» more...
Return the position of the first match
constexpr
size_type
find_first_of(
char c,
size_type pos = 0) const noexcept;
» more...
Return the position of the first match
constexpr
size_type
find_first_of(
char const* s,
size_type pos = 0) const noexcept;
» more...
Return the position of the first match
constexpr
size_type
find_first_of(
char const* s,
size_type pos,
size_type n) const noexcept;
» more...
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
| c | The character to search for |
| s | The characters to search for |
| n | The number of characters to search for |
Return the position of the first match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_of(
core::string_view str,
size_type pos = 0) const noexcept;
See core::string_view::find_first_of
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
Return the position of the first match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_of(
char c,
size_type pos = 0) const noexcept;
See core::string_view::find_first_of
| Name | Description |
|---|---|
| c | The character to search for |
| pos | The position to start searching from |
Return the position of the first match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_of(
char const* s,
size_type pos = 0) const noexcept;
See core::string_view::find_first_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
Return the position of the first match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_first_of(
char const* s,
size_type pos,
size_type n) const noexcept;
See core::string_view::find_first_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
| n | The number of characters to search for |
Return the position of the last non-match
<boost/url/grammar/string_view_base.hpp>Return the position of the last non-match
constexpr
size_type
find_last_not_of(
core::string_view str,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of the last non-match
constexpr
size_type
find_last_not_of(
char c,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of the last non-match
constexpr
size_type
find_last_not_of(
char const* s,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of the last non-match
constexpr
size_type
find_last_not_of(
char const* s,
size_type pos,
size_type n) const noexcept;
» more...
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
| c | The character to search for |
| s | The characters to search for |
| n | The number of characters to search for |
Return the position of the last non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_not_of(
core::string_view str,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::find_last_not_of
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
Return the position of the last non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_not_of(
char c,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::find_last_not_of
| Name | Description |
|---|---|
| c | The character to search for |
| pos | The position to start searching from |
Return the position of the last non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_not_of(
char const* s,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::find_last_not_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
Return the position of the last non-match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_not_of(
char const* s,
size_type pos,
size_type n) const noexcept;
See core::string_view::find_last_not_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
| n | The number of characters to search for |
Return the position of the last match
<boost/url/grammar/string_view_base.hpp>Return the position of the last match
constexpr
size_type
find_last_of(
core::string_view str,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of the last match
constexpr
size_type
find_last_of(
char c,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of the last match
constexpr
size_type
find_last_of(
char const* s,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of the last match
constexpr
size_type
find_last_of(
char const* s,
size_type pos,
size_type n) const noexcept;
» more...
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
| c | The character to search for |
| s | The characters to search for |
| n | The number of characters to search for |
Return the position of the last match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_of(
core::string_view str,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::find_last_of
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
Return the position of the last match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_of(
char c,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::find_last_of
| Name | Description |
|---|---|
| c | The character to search for |
| pos | The position to start searching from |
Return the position of the last match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_of(
char const* s,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::find_last_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
Return the position of the last match
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
find_last_of(
char const* s,
size_type pos,
size_type n) const noexcept;
See core::string_view::find_last_of
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
| n | The number of characters to search for |
Return the first character
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reference
front() const noexcept;
See core::string_view::front
Return the size
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
length() const noexcept;
See core::string_view::length
Return the maximum allowed size
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
max_size() const noexcept;
See core::string_view::max_size
Access a character
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reference
operator[](size_type pos) const noexcept;
See core::string_view::operator[]
| Name | Description |
|---|---|
| pos | The position to access |
Return a reverse iterator to the end
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reverse_iterator
rbegin() const noexcept;
See core::string_view::rbegin
Return a reverse iterator to the beginning
<boost/url/grammar/string_view_base.hpp>
constexpr
const_reverse_iterator
rend() const noexcept;
See core::string_view::rend
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>Return the position of matching characters
constexpr
size_type
rfind(
core::string_view str,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of matching characters
constexpr
size_type
rfind(
char c,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of matching characters
constexpr
size_type
rfind(
char const* s,
size_type pos = core::string_view::npos) const noexcept;
» more...
Return the position of matching characters
constexpr
size_type
rfind(
char const* s,
size_type pos,
size_type n) const noexcept;
» more...
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
| c | The character to search for |
| s | The characters to search for |
| n | The number of characters to search for |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
rfind(
core::string_view str,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::rfind
| Name | Description |
|---|---|
| str | The characters to search for |
| pos | The position to start searching from |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
rfind(
char c,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::rfind
| Name | Description |
|---|---|
| c | The character to search for |
| pos | The position to start searching from |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
rfind(
char const* s,
size_type pos = core::string_view::npos) const noexcept;
See core::string_view::rfind
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
Return the position of matching characters
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
rfind(
char const* s,
size_type pos,
size_type n) const noexcept;
See core::string_view::rfind
| Name | Description |
|---|---|
| s | The characters to search for |
| pos | The position to start searching from |
| n | The number of characters to search for |
Return the size
<boost/url/grammar/string_view_base.hpp>
constexpr
size_type
size() const noexcept;
See core::string_view::size
Return true if a matching prefix exists
<boost/url/grammar/string_view_base.hpp>Return true if a matching prefix exists
constexpr
bool
starts_with(core::string_view x) const noexcept;
» more...
Return true if a matching prefix exists
constexpr
bool
starts_with(char x) const noexcept;
» more...
Return true if a matching prefix exists
constexpr
bool
starts_with(char const* x) const noexcept;
» more...
true if the prefix matches
| Name | Description |
|---|---|
| x | The string to search for |
Return true if a matching prefix exists
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
starts_with(core::string_view x) const noexcept;
See core::string_view::starts_with
true if the prefix matches
| Name | Description |
|---|---|
| x | The string to search for |
Return true if a matching prefix exists
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
starts_with(char x) const noexcept;
See core::string_view::starts_with
true if the prefix matches
| Name | Description |
|---|---|
| x | The character to search for |
Return true if a matching prefix exists
<boost/url/grammar/string_view_base.hpp>
constexpr
bool
starts_with(char const* x) const noexcept;
See core::string_view::starts_with
true if the prefix matches
| Name | Description |
|---|---|
| x | The string to search for |
Return a view to part of the string
<boost/url/grammar/string_view_base.hpp>
constexpr
core::string_view
substr(
size_type pos = 0,
size_type n = core::string_view::npos) const;
See core::string_view::substr
| Name | Description |
|---|---|
| pos | The position to start from |
| n | The number of characters |
Conversion
<boost/url/grammar/string_view_base.hpp>
explicit
operator std::string() const noexcept;
Conversion to std::string is explicit because assigning to string using an implicit constructor does not preserve capacity.
Conversion
<boost/url/grammar/string_view_base.hpp>
operator std::string_view() const noexcept;
A constant used to represent "no position"
<boost/url/grammar/string_view_base.hpp>
inline constexpr static
std::size_t npos = core::string_view::npos;
Constructor
<boost/url/grammar/string_view_base.hpp>Constructor
constexpr
string_view_base() = default;
» more...
Constructor
constexpr
string_view_base(string_view_base const& other) = default;
» more...
Constructor
constexpr
string_view_base(core::string_view s) noexcept;
» more...
Constructor
constexpr
string_view_base(
char const* data,
std::size_t size) noexcept;
» more...
| Name | Description |
|---|---|
| s | The string view |
| data | The character buffer |
| size | The number of characters |
Constructor
<boost/url/grammar/string_view_base.hpp>
constexpr
string_view_base() = default;
Constructor
<boost/url/grammar/string_view_base.hpp>
constexpr
string_view_base(string_view_base const& other) = default;
| Name | Description |
|---|---|
| other | The object to copy construct from |
Constructor
<boost/url/grammar/string_view_base.hpp>
constexpr
string_view_base(core::string_view s) noexcept;
| Name | Description |
|---|---|
| s | The string view |
Constructor
<boost/url/grammar/string_view_base.hpp>
constexpr
string_view_base(
char const* data,
std::size_t size) noexcept;
| Name | Description |
|---|---|
| data | The character buffer |
| size | The number of characters |
Assignment
<boost/url/grammar/string_view_base.hpp>
constexpr
string_view_base&
operator=(string_view_base const& other) = default;
| Name | Description |
|---|---|
| other | The object to assign |
Swap
<boost/url/grammar/string_view_base.hpp>
void
swap(string_view_base& s) noexcept;
| Name | Description |
|---|---|
| s | The object to swap with |
The referenced character buffer
Match an unsigned decimal
<boost/url/grammar/unsigned_rule.hpp>
template<class Unsigned>
struct unsigned_rule;
| Name |
|---|
value_type |
| Name |
|---|
parse |
Extra leading zeroes are disallowed.
using value_type = Unsigned;
Rules are used with the function parse.
system::result< unsigned short > rv = parse( "32767", unsigned_rule< unsigned short >{} );
unsigned = "0" / ( ["1"..."9"] *DIGIT )
| Name | Description |
|---|---|
| Unsigned | The unsigned integer type used to store the result. |
<boost/url/grammar/unsigned_rule.hpp>
system::result<value_type>
parse(
char const*& it,
char const* end) const noexcept;
Error conditions for errors received from rules
| Name | Description |
|---|---|
fatal | A fatal error in syntax was encountered. |
Error codes returned when using rules
| Name | Description |
|---|---|
need_more | More input is needed to match the rule |
mismatch | The rule did not match the input. |
end_of_range | A rule reached the end of a range |
leftover | Leftover input remaining after match. |
invalid | A rule encountered unrecoverable invalid input. |
out_of_range | An integer overflowed during parsing. |
syntax | An unspecified syntax error was found. |
Return the case-insensitive comparison of s0 and s1
<boost/url/grammar/ci_string.hpp>
int
ci_compare(
core::string_view s0,
core::string_view s1) noexcept;
This returns the lexicographical comparison of two strings, ignoring case. The function is defined only for strings containing low-ASCII characters.
assert( ci_compare( "boost", "Boost" ) == 0 );
Throws nothing.
s0 is less than s1, or 1 if s0 is greater than s1.
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Return the case-insensitive digest of a string
<boost/url/grammar/ci_string.hpp>
std::size_t
ci_digest(core::string_view s) noexcept;
The hash function is non-cryptographic and not hardened against algorithmic complexity attacks. Returned digests are suitable for usage in unordered containers. The function is defined only for strings containing low-ASCII characters.
| Name | Description |
|---|---|
| s | The string |
Return true if s0 equals s1 using case-insensitive comparison
<boost/url/grammar/ci_string.hpp>Return true if s0 equals s1 using case-insensitive comparison
bool
ci_is_equal(
core::string_view s0,
core::string_view s1) noexcept;
» more...
Return true if s0 equals s1 using case-insensitive comparison
template<
class String0,
class String1>
bool
ci_is_equal(
String0 const& s0,
String1 const& s1)
requires ! std::is_convertible<
String0, core::string_view>::value ||
! std::is_convertible<
String1, core::string_view>::value;
» more...
true if s0 case-insensitively equals s1, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Return true if s0 equals s1 using case-insensitive comparison
<boost/url/grammar/ci_string.hpp>
bool
ci_is_equal(
core::string_view s0,
core::string_view s1) noexcept;
The function is defined only for strings containing low-ASCII characters.
assert( ci_is_equal( "Boost", "boost" ) );
true if s0 case-insensitively equals s1, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Return true if s0 equals s1 using case-insensitive comparison
<boost/url/grammar/ci_string.hpp>
template<
class String0,
class String1>
bool
ci_is_equal(
String0 const& s0,
String1 const& s1)
requires ! std::is_convertible<
String0, core::string_view>::value ||
! std::is_convertible<
String1, core::string_view>::value;
The function is defined only for strings containing low-ASCII characters.
assert( ci_is_equal( "Boost", "boost" ) );
true if s0 case-insensitively equals s1, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Return true if s0 is less than s1 using case-insensitive comparison
<boost/url/grammar/ci_string.hpp>
bool
ci_is_less(
core::string_view s0,
core::string_view s1) noexcept;
The comparison algorithm implements a case-insensitive total order on the set of all strings; however, it is not a lexicographical comparison. The function is defined only for strings containing low-ASCII characters.
assert( ! ci_is_less( "Boost", "boost" ) );
true if s0 is case-insensitively less than s1, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
delim_rule overloads
<boost/url/grammar/delim_rule.hpp>Match a character literal
constexpr
/* implementation-defined */
delim_rule(char ch) noexcept;
» more...
Match a single character from a character set
template<CharSet CS>
constexpr
/* implementation-defined */
delim_rule(CS const& cs) noexcept
requires ! std::is_convertible<
CS, char>::value;
» more...
| Name | Description |
|---|---|
| ch | The character to match |
| cs | The character set to use. |
Match a character literal
<boost/url/grammar/delim_rule.hpp>
constexpr
/* implementation-defined */
delim_rule(char ch) noexcept;
This matches the specified character. The value is a reference to the character in the underlying buffer, expressed as a core::string_view. The function squelch may be used to turn this into void instead. If there is no more input, the error code error::need_more is returned.
using value_type = core::string_view;
Rules are used with the function parse.
system::result< core::string_view > rv = parse( ".", delim_rule('.') );
char = %00-FF
| Name | Description |
|---|---|
| ch | The character to match |
Match a single character from a character set
<boost/url/grammar/delim_rule.hpp>
template<CharSet CS>
constexpr
/* implementation-defined */
delim_rule(CS const& cs) noexcept
requires ! std::is_convertible<
CS, char>::value;
This matches exactly one character which belongs to the specified character set. The value is a reference to the character in the underlying buffer, expressed as a core::string_view. The function squelch may be used to turn this into void instead. If there is no more input, the error code error::need_more is returned.
using value_type = core::string_view;
Rules are used with the function parse.
system::result< core::string_view > rv = parse( "X", delim_rule( alpha_chars ) );
| Name | Description |
|---|---|
| cs | The character set to use. |
Find the first character in the string that is in the set.
<boost/url/grammar/charset.hpp>
template<CharSet CS>
char const*
find_if(
char const const* first,
char const const* last,
CS const& cs) noexcept;
Throws nothing.
last.
| Name | Description |
|---|---|
| first | A pointer to the first character in the string to search. |
| last | A pointer to one past the last character in the string to search. |
| cs | The character set to use. |
Find the first character in the string that is not in CharSet
<boost/url/grammar/charset.hpp>
template<CharSet CS>
char const*
find_if_not(
char const const* first,
char const const* last,
CS const& cs) noexcept;
Throws nothing.
last.
| Name | Description |
|---|---|
| first | A pointer to the first character in the string to search. |
| last | A pointer to one past the last character in the string to search. |
| cs | The character set to use. |
find_if_not.
Return the decimal value of a hex character
<boost/url/grammar/hexdig_chars.hpp>
signed char
hexdig_value(char ch) noexcept;
This function returns the decimal value of a hexadecimal character, or -1 if the argument is not a valid hexadecimal digit.
HEXDIG = DIGIT
/ "A" / "B" / "C" / "D" / "E" / "F"
/ "a" / "b" / "c" / "d" / "e" / "f"
| Name | Description |
|---|---|
| ch | The character to check |
Match another rule, if the result is not empty
<boost/url/grammar/not_empty_rule.hpp>
template<Rule R>
constexpr
/* implementation-defined */
not_empty_rule(R const& r);
This adapts another rule such that when an empty string is successfully parsed, the result is an error.
using value_type = typename Rule::value_type;
Rules are used with the function parse.
system::result< decode_view > rv = parse( "Program%20Files",
not_empty_rule( pct_encoded_rule( unreserved_chars ) ) );
| Name | Description |
|---|---|
| r | The rule to match |
Return the union of two character sets.
<boost/url/grammar/lut_chars.hpp>
constexpr
lut_chars
operator+(
lut_chars const& cs0,
lut_chars const& cs1) noexcept;
This function returns a new character set which contains all of the characters in cs0 as well as all of the characters in cs.
This creates a character set which includes all letters and numbers
constexpr lut_chars alpha_chars(
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz");
constexpr lut_chars alnum_chars = alpha_chars + "0123456789";
Constant.
| Name | Description |
|---|---|
| cs0 | A character to join |
| cs1 | A character to join |
Return a new character set by subtracting
<boost/url/grammar/lut_chars.hpp>
constexpr
lut_chars
operator-(
lut_chars const& cs0,
lut_chars const& cs1) noexcept;
This function returns a new character set which is formed from all of the characters in cs0 which are not in cs.
This statement declares a character set containing all the lowercase letters which are not vowels:
constexpr lut_chars consonants = lut_chars("abcdefghijklmnopqrstuvwxyz") - "aeiou";
Constant.
| Name | Description |
|---|---|
| cs0 | A character set to join. |
| cs1 | A character set to join. |
Match a rule, or the empty string
<boost/url/grammar/optional_rule.hpp>
template<Rule R>
constexpr
/* implementation-defined */
optional_rule(R const& r);
Optional BNF elements are denoted with square brackets. If the specified rule returns any error it is treated as if the rule did not match.
using value_type = optional< typename Rule::value_type >;
Rules are used with the function grammar::parse.
system::result< optional< core::string_view > > rv = parse( "", optional_rule( token_rule( alpha_chars ) ) );
optional = [ rule ]
| Name | Description |
|---|---|
| r | The rule to match |
Parse a character buffer using a rule
<boost/url/grammar/parse.hpp>Parse a character buffer using a rule
template<Rule R>
system::result<R::value_type>
parse(
core::string_view s,
R const& r);
» more...
Parse a character buffer using a rule
template<Rule R>
system::result<R::value_type>
parse(
char const*& it,
char const* end,
R const& r);
» more...
| Name | Description |
|---|---|
| s | The input string |
| r | The rule to use |
| it | A pointer to the start. The caller's variable is changed to reflect the amount of input consumed. |
| end | A pointer to the end. |
Parse a character buffer using a rule
<boost/url/grammar/parse.hpp>
template<Rule R>
system::result<R::value_type>
parse(
core::string_view s,
R const& r);
This function parses a complete string into the specified sequence of rules. If the string is not completely consumed, an error is returned instead.
| Name | Description |
|---|---|
| s | The input string |
| r | The rule to use |
Parse a character buffer using a rule
<boost/url/grammar/parse.hpp>
template<Rule R>
system::result<R::value_type>
parse(
char const*& it,
char const* end,
R const& r);
| Name | Description |
|---|---|
| it | A pointer to the start. The caller's variable is changed to reflect the amount of input consumed. |
| end | A pointer to the end. |
| r | The rule to use |
Match a repeating number of elements
<boost/url/grammar/range_rule.hpp>Match a repeating number of elements
template<Rule R>
constexpr
/* implementation-defined */
range_rule(
R const& next,
std::size_t N = 0,
std::size_t M = std::size_t(-1)) noexcept;
» more...
Match a repeating number of elements
template<
Rule R1,
Rule R2>
constexpr
/* implementation-defined */
range_rule(
R1 const& first,
R2 const& next,
std::size_t N = 0,
std::size_t M = std::size_t(-1)) noexcept
requires ! std::is_integral<R2>::value;
» more...
| Name | Description |
|---|---|
| next | The rule to use for matching each element. The range extends until this rule returns an error. |
| N | The minimum number of elements for the range to be valid. If omitted, this defaults to zero. |
| M | The maximum number of elements for the range to be valid. If omitted, this defaults to unlimited. |
| first | The rule to use for matching the first element. If this rule returns an error, the range is empty. |
alpha_chars, delim_rule, error::end_of_range, parse, range, tuple_rule, squelch.
Match a repeating number of elements
<boost/url/grammar/range_rule.hpp>
template<Rule R>
constexpr
/* implementation-defined */
range_rule(
R const& next,
std::size_t N = 0,
std::size_t M = std::size_t(-1)) noexcept;
Elements are matched using the passed rule. Normally when the rule returns an error, the range ends and the input is rewound to one past the last character that matched successfully. However, if the rule returns the special value error::end_of_range, the input is not rewound. This allows for rules which consume input without producing elements in the range. For example, to relax the grammar for a comma-delimited list by allowing extra commas in between elements.
using value_type = range< typename Rule::value_type >;
Rules are used with the function parse.
// range = 1*( ";" token )
system::result< range<core::string_view> > rv = parse( ";alpha;xray;charlie",
range_rule(
tuple_rule(
squelch( delim_rule( ';' ) ),
token_rule( alpha_chars ) ),
1 ) );
range = <N>*<M>next
| Name | Description |
|---|---|
| next | The rule to use for matching each element. The range extends until this rule returns an error. |
| N | The minimum number of elements for the range to be valid. If omitted, this defaults to zero. |
| M | The maximum number of elements for the range to be valid. If omitted, this defaults to unlimited. |
alpha_chars, delim_rule, error::end_of_range, parse, range, tuple_rule, squelch.
Match a repeating number of elements
<boost/url/grammar/range_rule.hpp>
template<
Rule R1,
Rule R2>
constexpr
/* implementation-defined */
range_rule(
R1 const& first,
R2 const& next,
std::size_t N = 0,
std::size_t M = std::size_t(-1)) noexcept
requires ! std::is_integral<R2>::value;
Two rules are used for match. The rule first is used for matching the first element, while the next rule is used to match every subsequent element. Normally when the rule returns an error, the range ends and the input is rewound to one past the last character that matched successfully. However, if the rule returns the special value error::end_of_range, the input is not rewound. This allows for rules which consume input without producing elements in the range. For example, to relax the grammar for a comma-delimited list by allowing extra commas in between elements.
using value_type = range< typename Rule::value_type >;
Rules are used with the function parse.
// range = [ token ] *( "," token )
system::result< range< core::string_view > > rv = parse( "whiskey,tango,foxtrot",
range_rule(
token_rule( alpha_chars ), // first
tuple_rule( // next
squelch( delim_rule(',') ),
token_rule( alpha_chars ) ) ) );
range = <1>*<1>first
/ first <N-1>*<M-1>next
| Name | Description |
|---|---|
| first | The rule to use for matching the first element. If this rule returns an error, the range is empty. |
| next | The rule to use for matching each subsequent element. The range extends until this rule returns an error. |
| N | The minimum number of elements for the range to be valid. If omitted, this defaults to zero. |
| M | The maximum number of elements for the range to be valid. If omitted, this defaults to unlimited. |
alpha_chars, delim_rule, error::end_of_range, parse, range, tuple_rule, squelch.
ref overloads
<boost/url/grammar/charset.hpp>Return a reference to a character set
template<CharSet CS>
constexpr
/* implementation-defined */
ref(CS const& cs) noexcept
requires is_charset<CS>::value &&
! std::is_same<CS,
implementation_defined::charset_ref<CS> >::value;
» more...
Return a reference to a rule
template<Rule R>
constexpr
/* implementation-defined */
ref(R const& r) noexcept
requires is_rule<R>::value &&
! std::is_same<R,
implementation_defined::rule_ref<R> >::value;
» more...
| Name | Description |
|---|---|
| CharSet | The character set type |
| Name | Description |
|---|---|
| cs | The character set to use |
| r | The rule to use |
Return a reference to a character set
<boost/url/grammar/charset.hpp>
template<CharSet CS>
constexpr
/* implementation-defined */
ref(CS const& cs) noexcept
requires is_charset<CS>::value &&
! std::is_same<CS,
implementation_defined::charset_ref<CS> >::value;
This function returns a character set which references the specified object. This is used to reduce the number of bytes of storage (sizeof) required by a combinator when it stores a copy of the object. Ownership of the object is not transferred; the caller is responsible for ensuring the lifetime of the object is extended until it is no longer referenced. For best results, ref should only be used with compile-time constants.
| Name | Description |
|---|---|
| CharSet | The character set type |
| Name | Description |
|---|---|
| cs | The character set to use |
Return a reference to a rule
<boost/url/grammar/parse.hpp>
template<Rule R>
constexpr
/* implementation-defined */
ref(R const& r) noexcept
requires is_rule<R>::value &&
! std::is_same<R,
implementation_defined::rule_ref<R> >::value;
This function returns a rule which references the specified object. This is used to reduce the number of bytes of storage (sizeof) required by a combinator when it stores a copy of the object. Ownership of the object is not transferred; the caller is responsible for ensuring the lifetime of the object is extended until it is no longer referenced. For best results, ref should only be used with compile-time constants.
| Name | Description |
|---|---|
| r | The rule to use |
Squelch the value of a rule
<boost/url/grammar/tuple_rule.hpp>
template<Rule R>
constexpr
/* implementation-defined */
squelch(R const& r) noexcept;
This function returns a new rule which matches the specified rule, and converts its value type to void. This is useful for matching delimiters in a grammar, where the value for the delimiter is not needed.
using value_type = void;
With squelch:
system::result< std::tuple< decode_view, core::string_view > > rv = parse(
"www.example.com:443",
tuple_rule(
pct_encoded_rule(unreserved_chars + '-' + '.'),
squelch( delim_rule( ':' ) ),
token_rule( digit_chars ) ) );
Without squelch:
system::result< std::tuple< decode_view, core::string_view, core::string_view > > rv = parse(
"www.example.com:443",
tuple_rule(
pct_encoded_rule(unreserved_chars + '-' + '.'),
delim_rule( ':' ),
token_rule( digit_chars ) ) );
| Name | Description |
|---|---|
| r | The rule to squelch |
delim_rule, digit_chars, parse, tuple_rule, token_rule, decode_view, pct_encoded_rule, unreserved_chars.
Return c converted to lowercase
This function returns the character, converting it to lowercase if it is uppercase. The function is defined only for low-ASCII characters.
assert( to_lower( 'A' ) == 'a' );
Throws nothing.
| Name | Description |
|---|---|
| c | The character to convert |
Return c converted to uppercase
This function returns the character, converting it to uppercase if it is lowercase. The function is defined only for low-ASCII characters.
assert( to_upper( 'a' ) == 'A' );
Throws nothing.
| Name | Description |
|---|---|
| c | The character to convert |
Match a non-empty string of characters from a set
<boost/url/grammar/token_rule.hpp>
template<CharSet CS>
constexpr
/* implementation-defined */
token_rule(CS const& cs) noexcept;
If there is no more input, the error code error::need_more is returned.
using value_type = core::string_view;
Rules are used with the function parse.
system::result< core::string_view > rv = parse( "abcdef", token_rule( alpha_chars ) );
token = 1*( ch )
| Name | Description |
|---|---|
| cs | The character set to use |
Match a series of rules in order
<boost/url/grammar/tuple_rule.hpp>
template<
Rule R0,
Rule... Rn>
constexpr
/* implementation-defined */
tuple_rule(
R0 const& r0,
Rn const...&... rn) noexcept;
This matches a series of rules in the order specified. Upon success the input is adjusted to point to the first unconsumed character. There is no implicit specification of linear white space between each rule.
using value_type = __see_below__;
The sequence rule usually returns a std::tuple containing the the value_type of each corresponding rule in the sequence, except that void values are removed. However, if there is exactly one non-void value type T, then the sequence rule returns system::result<T> instead of system::result<tuple<...>>.
Rules are used with the function parse.
system::result< std::tuple< unsigned char, unsigned char, unsigned char, unsigned char > > rv =
parse( "192.168.0.1",
tuple_rule(
dec_octet_rule,
squelch( delim_rule('.') ),
dec_octet_rule,
squelch( delim_rule('.') ),
dec_octet_rule,
squelch( delim_rule('.') ),
dec_octet_rule ) );
sequence = rule1 rule2 rule3...
| Name | Description |
|---|---|
| r0 | The first rule to match |
| rn | A list of one or more rules to match |
Match one of a set of rules
<boost/url/grammar/variant_rule.hpp>
template<
Rule R0,
Rule... Rn>
constexpr
/* implementation-defined */
variant_rule(
R0 const& r0,
Rn const...&... rn) noexcept;
Each specified rule is tried in sequence. When the first match occurs, the result is stored and returned in the variant. If no match occurs, an error is returned.
using value_type = variant< typename Rules::value_type... >;
Rules are used with the function parse.
// request-target = origin-form
// / absolute-form
// / authority-form
// / asterisk-form
system::result< variant< url_view, url_view, authority_view, core::string_view > > rv = grammar::parse(
"/index.html?width=full",
variant_rule(
origin_form_rule,
absolute_uri_rule,
authority_rule,
delim_rule('*') ) );
variant = rule1 / rule2 / rule3...
| Name | Description |
|---|---|
| r0 | The first rule to match |
| rn | A list of one or more rules to match |
absolute_uri_rule, authority_rule, delim_rule, parse, origin_form_rule, url_view.
Format a string to an output stream
<boost/url/grammar/string_view_base.hpp>
std::ostream&
operator<<(
std::ostream& os,
string_view_base const& s);
Format a string to an output stream
| Name | Description |
|---|---|
| os | The output stream to write to |
| s | The string to write |
Compare two string views for equality
<boost/url/grammar/string_view_base.hpp>
template<
class S0,
class S1>
constexpr
bool
operator==(
S0 const& s0,
S1 const& s1) noexcept
requires is_match<S0, S1>::value;
This function is only enabled if both arguments are convertible to core::string_view and at least one of the arguments is derived from string_view_base.
true if the strings are equal, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Compare two string views for inequality
<boost/url/grammar/string_view_base.hpp>
template<
class S0,
class S1>
constexpr
bool
operator!=(
S0 const& s0,
S1 const& s1) noexcept
requires is_match<S0, S1>::value;
This function is only enabled if both arguments are convertible to core::string_view and at least one of the arguments is derived from string_view_base.
true if the strings are not equal, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Compare two string views for less than
<boost/url/grammar/string_view_base.hpp>
template<
class S0,
class S1>
constexpr
bool
operator<(
S0 const& s0,
S1 const& s1) noexcept
requires is_match<S0, S1>::value;
This function is only enabled if both arguments are convertible to core::string_view and at least one of the arguments is derived from string_view_base.
true if the first string is less than the second, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Compare two string views for less than or equal
<boost/url/grammar/string_view_base.hpp>
template<
class S0,
class S1>
constexpr
bool
operator<=(
S0 const& s0,
S1 const& s1) noexcept
requires is_match<S0, S1>::value;
This function is only enabled if both arguments are convertible to core::string_view and at least one of the arguments is derived from string_view_base.
true if the first string is less than or equal to the second, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Compare two string views for greater than
<boost/url/grammar/string_view_base.hpp>
template<
class S0,
class S1>
constexpr
bool
operator>(
S0 const& s0,
S1 const& s1) noexcept
requires is_match<S0, S1>::value;
This function is only enabled if both arguments are convertible to core::string_view and at least one of the arguments is derived from string_view_base.
true if the first string is greater than the second, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
Compare two string views for greater than or equal
<boost/url/grammar/string_view_base.hpp>
template<
class S0,
class S1>
constexpr
bool
operator>=(
S0 const& s0,
S1 const& s1) noexcept
requires is_match<S0, S1>::value;
This function is only enabled if both arguments are convertible to core::string_view and at least one of the arguments is derived from string_view_base.
true if the first string is greater than or equal to the second, otherwise false
| Name | Description |
|---|---|
| s0 | The first string |
| s1 | The second string |
The set of all characters
<boost/url/grammar/all_chars.hpp>
inline constexpr /* implementation-defined */ all_chars = all_chars{};
Character sets are used with rules and the functions find_if and find_if_not.
system::result< core::string_view > rv = parse( "JohnDoe", token_rule( all_chars ) );
ALL = %x00-FF
The set of letters and digits
<boost/url/grammar/alnum_chars.hpp>
constexpr /* implementation-defined */ alnum_chars = {};
Character sets are used with rules and the functions find_if and find_if_not.
system::result< core::string_view > = parse( "Johnny42", token_rule( alnumchars ) );
ALNUM = ALPHA / DIGIT
ALPHA = %x41-5A / %x61-7A
; A-Z / a-z
DIGIT = %x30-39
; 0-9
The set of all letters
<boost/url/grammar/alpha_chars.hpp>
constexpr /* implementation-defined */ alpha_chars = alpha_chars{};
Character sets are used with rules and the functions find_if and find_if_not.
system::result< core::string_view > rv = parse( "JohnDoe", token_rule( alpha_chars ) );
ALPHA = %x41-5A / %x61-7A
; A-Z / a-z
Match a decimal octet
<boost/url/grammar/dec_octet_rule.hpp>
constexpr /* implementation-defined */ dec_octet_rule = {};
A decimal octet is precise way of saying a number from 0 to 255. These are commonly used in IPv4 addresses.
using value_type = unsigned char;
Rules are used with the function parse.
system::result< unsigned char > rv = parse( "255", dec_octet_rule );
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
The set of decimal digits
<boost/url/grammar/digit_chars.hpp>
constexpr /* implementation-defined */ digit_chars = {};
Character sets are used with rules and the functions find_if and find_if_not.
system::result< core::string_view > rv = parse( "2022", token_rule( digit_chars ) );
DIGIT = %x30-39
; 0-9
The set of hexadecimal digits
<boost/url/grammar/hexdig_chars.hpp>
constexpr /* implementation-defined */ hexdig_chars = {};
Character sets are used with rules and the functions find_if and find_if_not.
system::result< core::string_view > rv = parse( "8086FC19", token_rule( hexdig_chars ) );
HEXDIG = DIGIT
/ "A" / "B" / "C" / "D" / "E" / "F"
/ "a" / "b" / "c" / "d" / "e" / "f"
The RFCs are inconsistent on the case sensitivity of hexadecimal digits. Existing uses suggest case-insensitivity is a de-facto standard.
The set of visible characters
<boost/url/grammar/vchars.hpp>
constexpr /* implementation-defined */ vchars = {};
Character sets are used with rules and the functions find_if and find_if_not.
system::result< core::string_view > rv = parse( "JohnDoe", token_rule( vchars ) );
VCHAR = 0x21-0x7E
; visible (printing) characters
Concept for a CharSet
<boost/url/grammar/charset.hpp>
template<class T>
concept CharSet = requires (T const t, char c)
{
{ t(c) } -> std::convertible_to<bool>;
};
A CharSet is a unary predicate which is invocable with this equivalent signature:
bool( char ch ) const noexcept;
The predicate returns true if ch is a member of the set, or false otherwise.
For best results, it is suggested that all constructors and member functions for character sets be marked constexpr.
struct CharSet
{
bool operator()( char c ) const noexcept;
// These are both optional. If either or both are left
// unspecified, a default implementation will be used.
//
char const* find_if( char const* first, char const* last ) const noexcept;
char const* find_if_not( char const* first, char const* last ) const noexcept;
};
alnum_chars
alpha_chars
digit_chars
hexdig_chars
lut_chars
Concept for a grammar Rule
<boost/url/grammar/type_traits.hpp>
template<class T>
concept Rule = requires (T t, char const*& it, char const* end)
{
typename T::value_type;
{ t.parse(it, end) } -> std::same_as<system::result<typename T::value_type>>;
};
This concept is satisfied if T is a valid grammar Rule
A Rule defines an algorithm used to match an input buffer of ASCII characters against a set of syntactical specifications.
Each rule represents either a terminal symbol or a composition in the represented grammar.
The library comes with a set of rules for productions typically found in RFC documents. Rules are not invoked directly; instead, rule variables are used with overloads of parse which provide a convenient, uniform front end.
For best results, it is suggested that all constructors for rules be marked constexpr.
struct Rule
{
struct value_type;
constexpr Rule( Rule const& ) noexcept = default;
auto parse( char const*& it, char const* end ) const -> result< value_type >;
};
// Declare a variable of type Rule for notational convenience
constexpr Rule rule{};
dec_octet_rule
delim_rule
not_empty_rule
optional_rule
range_rule
token_rule
tuple_rule
unsigned_rule
variant_rule
| Name | Description |
|---|---|
arg | Base class for string tokens, and algorithm parameters |
is_token | Trait to determine if a type is a string token |
return_string | A string token for returning a plain string |
| Name | Description |
|---|---|
append_to | Create a string token for appending to a plain string |
assign_to | Create a string token for assigning to a plain string |
preserve_size | Create a string token for a durable core::string_view |
| Name | Description |
|---|---|
StringToken | Concept for a string token |
Trait to determine if a type is a string token
<boost/url/grammar/string_token.hpp>
template<class T>
using is_token = /* implementation-defined */;
This trait returns true if T is a valid StringToken type, and false otherwise.
static_assert( string_token::is_token<T>::value );
A string token for returning a plain string
<boost/url/grammar/string_token.hpp>
using return_string = /* implementation-defined */;
This StringToken is used to customize a function to return a plain string.
This is default token type used by the methods of url_view_base that return decoded strings.
Base class for string tokens, and algorithm parameters
| Name | Description |
|---|---|
arg [constructor] | Constructors |
~arg [destructor] [virtual] | Virtual destructor |
operator= [deleted] | Assignment operators |
prepare [virtual] | Return a modifiable character buffer |
This abstract interface provides a means for an algorithm to generically obtain a modifiable, contiguous character buffer of prescribed size.
A StringToken should be derived from this class. As the author of an algorithm using a StringToken, simply declare an rvalue reference as a parameter type.
Instances of this type are intended only to be used once and then destroyed.
The declared function accepts any temporary instance of arg to be used for writing:
void algorithm( string_token::arg&& dest );
To implement the interface for your type or use-case, derive from the class and implement the prepare function.
Constructors
<boost/url/grammar/string_token.hpp>Default constructor
constexpr
arg() = default;
» more...
Deleted copy constructor
arg(arg const& other) = delete;
» more...
Default move constructor
constexpr
arg(arg&& other) = default;
» more...
Default constructor
Deleted copy constructor
| Name | Description |
|---|---|
| other | The object to copy construct from |
Default move constructor
| Name | Description |
|---|---|
| other | The object to move construct from |
Virtual destructor
Assignment operators
<boost/url/grammar/string_token.hpp>Deleted copy assignment
arg&
operator=(arg const& other) = delete;
» more...
Deleted move assignment
arg&
operator=(arg&& other) = delete;
» more...
Deleted copy assignment
<boost/url/grammar/string_token.hpp>
arg&
operator=(arg const& other) = delete;
| Name | Description |
|---|---|
| other | The object to copy assign from |
Deleted move assignment
| Name | Description |
|---|---|
| other | The object to move assign from |
Return a modifiable character buffer
This function attempts to obtain a character buffer with space for at least n characters. Upon success, a pointer to the beginning of the buffer is returned. Ownership is not transferred; the caller should not attempt to free the storage. The buffer shall remain valid until this is destroyed.
This function may only be called once. After invoking the function, the only valid operation is destruction.
| Name | Description |
|---|---|
| n | The number of characters needed |
Create a string token for appending to a plain string
<boost/url/grammar/string_token.hpp>
template<class Alloc = std::allocator<char>>
/* implementation-defined */
append_to(std::basic_string<char, std::char_traits<char>, Alloc>& s);
This function creates a StringToken which appends to an existing plain string.
Functions using this token will append the result to the existing string and return a reference to it.
| Name | Description |
|---|---|
| s | The string to append |
Create a string token for assigning to a plain string
<boost/url/grammar/string_token.hpp>
template<class Alloc = std::allocator<char>>
/* implementation-defined */
assign_to(std::basic_string<char, std::char_traits<char>, Alloc>& s);
This function creates a StringToken which assigns to an existing plain string.
Functions using this token will assign the result to the existing string and return a reference to it.
| Name | Description |
|---|---|
| s | The string to assign |
Create a string token for a durable core::string_view
<boost/url/grammar/string_token.hpp>
template<class Alloc = std::allocator<char>>
/* implementation-defined */
preserve_size(std::basic_string<char, std::char_traits<char>, Alloc>& s);
This function creates a StringToken which assigns to an existing plain string.
Functions using this token will assign the result to the existing string and return a core::string_view to it.
| Name | Description |
|---|---|
| s | The string to preserve |
Concept for a string token
<boost/url/grammar/string_token.hpp>
template<class T>
concept StringToken = std::derived_from<T, string_token::arg> &&
requires (T t, std::size_t n)
{
typename T::result_type;
{ t.prepare(n) } -> std::same_as<char*>;
{ t.result() } -> std::convertible_to<typename T::result_type>;
};
This concept is satisfied if T is a valid string token type.
A string token is an rvalue passed to a function template which customizes the return type of the function and also controls how a modifiable character buffer is obtained and presented.
The string token's lifetime extends only for the duration of the function call in which it appears as a parameter.
A string token cannot be copied, moved, or assigned, and must be destroyed when the function returns or throws.
T::result_type determines the return type of functions that accept a string token.
The prepare() function overrides the virtual function in the base class arg. It must return a pointer to a character buffer of at least size n, otherwise throw an exception. This function is called only once or not at all.
The result() function is invoked by the algorithm to receive the result from the string token. It is only invoked if prepare() returned successfully and the string token was not destroyed. It is only called after prepare() returns successfully, and the string token is destroyed when the algorithm completes or if an exception is thrown.
String tokens cannot be reused.
String token prototype:
struct StringToken : string_token::arg
{
using result_type = std::string;
char* prepare( std::size_t n ) override;
result_type result();
};
Algorithm prototype:
namespace detail {
// Algorithm implementation may be placed
// out of line, and written as an ordinary
// function (no template required).
void algorithm_impl( string_token::arg& token )
{
std::size_t n = 0;
// calculate space needed in n
// ...
// acquire a destination buffer
char* dest = token.prepare( n );
// write the characters to the buffer
}
} // detail
// public interface is a function template,
// defaulting to return std::string.
template< class StringToken = string_token::return_string >
auto
algorithm( StringToken&& token = {} ) ->
typename StringToken::result_type
{
// invoke the algorithm with the token
algorithm_impl( token );
// return the result from the token
return token.result();
}
The following classes and functions implement and generate string tokens.
return_string
assign_to
preserve_size
A temporary reference to a formatting argument
This class represents a temporary reference to a formatting argument used by the format function.
A format argument should always be created by passing the argument to be formatted directly to the format function.
Any type that can be formatted into a URL with the format function is convertible to this type.
This includes basic types, types convertible to core::string_view, and named_arg.
A temporary reference to a named formatting argument
<boost/url/format.hpp>
template<class T>
using named_arg = /* implementation-defined */;
This class represents a temporary reference to a named formatting argument used by the format function.
Named arguments should always be created with the arg function.
Any type that can be formatted into a URL with the format function can also be used in a named argument. All named arguments are convertible to format_arg and can be used in the format function.
arg, format, format_to, format_arg.
The type of optional used by the library
<boost/url/optional.hpp>
template<class T>
using optional = boost::optional<T>;
This alias is no longer supported and should not be used in new code. Please use boost::optional instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
The type of string_view used by the library
String views are used to pass character buffers into or out of functions. Ownership of the underlying character buffer is not transferred; the caller is responsible for ensuring that the lifetime of character buffer extends until it is no longer referenced.
This alias is no longer supported and should not be used in new code. Please use core::string_view instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
The type of variant used by the library
<boost/url/variant.hpp>
template<class... Ts>
using variant = boost::variant2::variant<Ts...>;
This alias is no longer supported and should not be used in new code. Please use boost::variant2::variant instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.
A non-owning reference to a valid authority
| Name | Description |
|---|---|
authority_view [constructor] | Constructors |
~authority_view [destructor] [virtual] | Destructor |
operator= | Assignment |
buffer | Return the complete authority |
compare | Return the result of comparing this with another authority |
data | Return a pointer to the first character |
empty | Return true if the authority is empty |
encoded_host | Return the host |
encoded_host_address | Return the host |
encoded_host_and_port | Return the host and port |
encoded_host_name | Return the host name |
encoded_password | Return the password |
encoded_user | Return the user |
encoded_userinfo | Return the userinfo |
has_password | Return true if a password is present |
has_port | Return true if a port is present |
has_userinfo | Return true if a userinfo is present |
host | Return the host |
host_address | Return the host |
host_ipv4_address | Return the host IPv4 address |
host_ipv6_address | Return the host IPv6 address |
host_ipvfuture | Return the host IPvFuture address |
host_name | Return the host name |
host_type | Return the host type |
password | Return the password |
port | Return the port |
port_number | Return the port |
size | Return the number of characters in the authority |
user | Return the user |
userinfo | Return the userinfo |
| Name | Description |
|---|---|
operator<< |
Format the encoded authority to the output stream |
operator>= |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized. |
operator> |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized. |
operator<= |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized. |
operator< |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized. |
operator!= |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized. |
operator== |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized. |
| Name | Description |
|---|---|
parse_authority | Parse an authority |
Objects of this type represent valid authority strings constructed from a parsed, external character buffer whose storage is managed by the caller. That is, it acts like a core::string_view in terms of ownership. The caller is responsible for ensuring that the lifetime of the underlying character buffer extends until it is no longer referenced.
Construction from a string parses the input as an authority and throws an exception on error. Upon success, the constructed object points to the passed character buffer; ownership is not transferred.
authority_view a( "user:pass@www.example.com:8080" );
The parsing function parse_authority returns a boost::system::result containing either a valid authority_view upon success, otherwise it contains an error. The error can be converted to an exception by the caller if desired:
system::result< authority_view > rv = parse_authority( "user:pass@www.example.com:8080" );
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
Constructors
<boost/url/authority_view.hpp>Constructor
authority_view() noexcept;
» more...
Constructor
authority_view(authority_view const& other) noexcept;
» more...
Construct from a string.
explicit
authority_view(core::string_view s);
» more...
| Name | Description |
|---|---|
| s | The string to parse |
Constructor
Default constructed authorities refer to a string with zero length, which is always valid. This matches the grammar for a zero-length host.
Throws nothing.
Constructor
<boost/url/authority_view.hpp>
authority_view(authority_view const& other) noexcept;
| Name | Description |
|---|---|
| other | The object to copy construct from |
Construct from a string.
This function attempts to construct an authority from the string s, which must be a valid authority or else an exception is thrown. Upon successful construction, the view refers to the characters in the buffer pointed to by s. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until the view is destroyed.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
| Name | Description |
|---|---|
| s | The string to parse |
Destructor
Assignment
<boost/url/authority_view.hpp>
authority_view&
operator=(authority_view const& other) noexcept;
This function assigns the contents of other to this object.
Throws nothing.
| Name | Description |
|---|---|
| other | The object to assign |
Return the complete authority
This function returns the authority as a percent-encoded string.
assert( parse_authority( "www.example.com" ).value().buffer() == "www.example.com" );
authority = [ userinfo "@" ] host [ ":" port ]
Throws nothing.
Return the result of comparing this with another authority
<boost/url/authority_view.hpp>
int
compare(authority_view const& other) const noexcept;
This function compares two authorities according to Syntax-Based comparison algorithm.
Throws nothing.
-1 if *this < other, 0 if this == other, and 1 if this > other.
| Name | Description |
|---|---|
| other | The authority to compare |
Return a pointer to the first character
This function returns a pointer to the beginning of the view, which is not guaranteed to be null-terminated.
Throws nothing.
Return true if the authority is empty
An empty authority has an empty host, no userinfo, and no port.
assert( authority_view( "" ).empty() );
Throws nothing.
true if the authority is empty
Return the host
This function returns the host portion of the authority as a string, or the empty string if there is no authority. The returned string may contain percent escapes.
assert( url_view( "https://www%2droot.example.com/" ).encoded_host() == "www%2droot.example.com" );
Constant.
Throws nothing.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
Return the host
<boost/url/authority_view.hpp>
pct_string_view
encoded_host_address() const noexcept;
The value returned by this function depends on the type of host returned from the function host_type.
If the type is host_type::ipv4, then the IPv4 address string is returned.
If the type is host_type::ipv6, then the IPv6 address string is returned, without any enclosing brackets.
If the type is host_type::ipvfuture, then the IPvFuture address string is returned, without any enclosing brackets.
If the type is host_type::name, then the host name string is returned. Any percent-escapes in the string are decoded first.
If the type is host_type::none, then an empty string is returned. The returned string may contain percent escapes.
assert( url_view( "https://www%2droot.example.com/" ).encoded_host_address() == "www%2droot.example.com" );
Constant.
Throws nothing.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
Return the host and port
<boost/url/authority_view.hpp>
pct_string_view
encoded_host_and_port() const noexcept;
If an authority is present, this function returns the host and optional port as a string, which may be empty. Otherwise it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "http://www.example.com:8080/index.htm" ).encoded_host_and_port() == "www.example.com:8080" );
Constant.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
Return the host name
<boost/url/authority_view.hpp>
pct_string_view
encoded_host_name() const noexcept;
If the host type is host_type::name, this function returns the name as a string. Otherwise, if the host type is not an name, it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "https://www%2droot.example.com/" ).encoded_host_name() == "www%2droot.example.com" );
Constant.
Throws nothing.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
Return the password
<boost/url/authority_view.hpp>
pct_string_view
encoded_password() const noexcept;
This function returns the password portion of the userinfo as a percent-encoded string.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).encoded_password() == "pass" );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
has_password, has_userinfo, encoded_user, encoded_userinfo, password, user, userinfo.
Return the user
If present, this function returns a string representing the user (which may be empty). Otherwise it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).encoded_user() == "jane%2Ddoe" );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
has_password, has_userinfo, encoded_password, encoded_userinfo, password, user, userinfo.
Return the userinfo
<boost/url/authority_view.hpp>
pct_string_view
encoded_userinfo() const noexcept;
If present, this function returns a string representing the userinfo (which may be empty). Otherwise it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).encoded_userinfo() == "jane%2Ddoe:pass" );
Constant.
Throws nothing
userinfo = user [ ":" [ password ] ]
authority = [ userinfo "@" ] host [ ":" port ]
has_password, has_userinfo, encoded_password, encoded_user, password, user, userinfo.
Return true if a password is present
This function returns true if the userinfo is present and contains a password.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).has_password() );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
true if a password is present
has_userinfo, encoded_password, encoded_user, encoded_userinfo, password, user, userinfo.
Return true if a port is present
This function returns true if an authority is present and contains a port.
assert( url_view( "wss://www.example.com:443" ).has_port() );
Constant.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
true if a port is present, otherwise false
Return true if a userinfo is present
This function returns true if this contains a userinfo.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).has_userinfo() );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
authority = [ userinfo "@" ] host [ ":" port ]
true if a userinfo is present
has_password, encoded_password, encoded_user, encoded_userinfo, password, user, userinfo.
Return the host
<boost/url/authority_view.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
host(StringToken&& token) const;
This function returns the host portion of the authority as a string, or the empty string if there is no authority. Any percent-escapes in the string are decoded first.
assert( url_view( "https://www%2droot.example.com/" ).host() == "www-root.example.com" );
Linear in this->host().size().
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Description |
|---|---|
| token | A string token to receive the result. |
Return the host
<boost/url/authority_view.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
host_address(StringToken&& token) const;
The value returned by this function depends on the type of host returned from the function host_type.
If the type is host_type::ipv4, then the IPv4 address string is returned.
If the type is host_type::ipv6, then the IPv6 address string is returned, without any enclosing brackets.
If the type is host_type::ipvfuture, then the IPvFuture address string is returned, without any enclosing brackets.
If the type is host_type::name, then the host name string is returned. Any percent-escapes in the string are decoded first.
If the type is host_type::none, then an empty string is returned.
assert( url_view( "https://[1::6:c0a8:1]/" ).host_address() == "1::6:c0a8:1" );
Linear in this->host_address().size().
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Description |
|---|---|
| token | A string token to receive the result. |
Return the host IPv4 address
<boost/url/authority_view.hpp>
ipv4_address
host_ipv4_address() const noexcept;
If the host type is host_type::ipv4, this function returns the address as a value of type ipv4_address. Otherwise, if the host type is not an IPv4 address, it returns a default-constructed value which is equal to the unspecified address "0.0.0.0".
assert( url_view( "http://127.0.0.1/index.htm?user=win95" ).host_ipv4_address() == ipv4_address( "127.0.0.1" ) );
Constant.
Throws nothing.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
Return the host IPv6 address
<boost/url/authority_view.hpp>
ipv6_address
host_ipv6_address() const noexcept;
If the host type is host_type::ipv6, this function returns the address as a value of type ipv6_address. Otherwise, if the host type is not an IPv6 address, it returns a default-constructed value which is equal to the unspecified address "0:0:0:0:0:0:0:0".
assert( url_view( "ftp://[::1]/" ).host_ipv6_address() == ipv6_address( "::1" ) );
Constant.
Throws nothing.
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
Return the host IPvFuture address
<boost/url/authority_view.hpp>
core::string_view
host_ipvfuture() const noexcept;
If the host type is host_type::ipvfuture, this function returns the address as a string. Otherwise, if the host type is not an IPvFuture address, it returns an empty string.
assert( url_view( "http://[v1fe.d:9]/index.htm" ).host_ipvfuture() == "v1fe.d:9" );
Constant.
Throws nothing.
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
Return the host name
<boost/url/authority_view.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
host_name(StringToken&& token) const;
If the host type is host_type::name, this function returns the name as a string. Otherwise, if the host type is not a name, it returns an empty string. Any percent-escapes in the string are decoded first.
assert( url_view( "https://www%2droot.example.com/" ).host_name() == "www-root.example.com" );
Linear in this->host_name().size().
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Description |
|---|---|
| token | A string token to receive the result |
Return the host type
This function returns one of the following constants representing the type of host present.
host_type::ipv4
host_type::ipv6
host_type::ipvfuture
host_type::name
assert( url_view( "https://192.168.0.1/local.htm" ).host_type() == host_type::ipv4 );
Constant.
Throws nothing.
Return the password
<boost/url/authority_view.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
password(StringToken&& token) const;
If present, this function returns a string representing the password (which may be an empty string). Otherwise it returns an empty string. Any percent-escapes in the string are decoded first.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).password() == "pass" );
Linear in this->password().size().
Calls to allocate may throw.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
| Name | Description |
|---|---|
| token | A string token to receive the result. |
has_password, has_userinfo, encoded_password, encoded_user, encoded_userinfo, user, userinfo.
Return the port
If present, this function returns a string representing the port (which may be empty). Otherwise it returns an empty string.
assert( url_view( "http://localhost.com:8080" ).port() == "8080" );
Constant.
Throws nothing.
port = *DIGIT
Return the port
If a port is present and the numerical value is representable, it is returned as an unsigned integer. Otherwise, the number zero is returned.
assert( url_view( "http://localhost.com:8080" ).port_number() == 8080 );
Constant.
Throws nothing.
port = *DIGIT
Return the number of characters in the authority
This function returns the number of characters in the authority.
assert( authority_view( "user:pass@www.example.com:8080" ).size() == 30 );
Throws nothing.
Return the user
<boost/url/authority_view.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
user(StringToken&& token) const;
If present, this function returns a string representing the user (which may be empty). Otherwise it returns an empty string. Any percent-escapes in the string are decoded first.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).user() == "jane-doe" );
Linear in this->user().size().
Calls to allocate may throw.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
| Name | Description |
|---|---|
| token | A string token to receive the result. |
has_password, has_userinfo, encoded_password, encoded_user, encoded_userinfo, password, userinfo.
Return the userinfo
<boost/url/authority_view.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
userinfo(StringToken&& token) const;
If present, this function returns a string representing the userinfo (which may be empty). Otherwise it returns an empty string. Any percent-escapes in the string are decoded first.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).userinfo() == "jane-doe:pass" );
Linear in this->userinfo().size().
Calls to allocate may throw.
userinfo = user [ ":" [ password ] ]
authority = [ userinfo "@" ] host [ ":" port ]
| Name | Description |
|---|---|
| token | A string token to receive the result. |
has_password, has_userinfo, encoded_password, encoded_user, encoded_userinfo, password, user.
A reference to a valid, percent-encoded string
| Name | Description |
|---|---|
iterator | An iterator of constant, decoded characters. |
const_iterator | An iterator of constant, decoded characters. |
const_reference | The reference type |
difference_type | The signed integer type |
reference | The reference type |
size_type | The unsigned integer type |
value_type | The value type |
| Name | Description |
|---|---|
decode_view [constructor] | Constructor |
back | Return the last character |
begin | Return an iterator to the beginning |
compare | Return the result of comparing to another string |
empty | Return true if the string is empty |
end | Return an iterator to the end |
ends_with | Checks if the string ends with the given prefix |
find | Finds the first occurrence of character in this view |
front | Return the first character |
options | Return the decoding options |
remove_prefix | Remove the first characters |
remove_suffix | Remove the last characters |
rfind | Finds the first occurrence of character in this view |
size | Return the number of decoded characters |
starts_with | Checks if the string begins with the given prefix |
| Name | Description |
|---|---|
operator<< |
Format the string with percent-decoding applied to the output stream |
operator>= |
Compare two decode views for greater than or equal |
operator>= |
Compare two decode views for greater than or equal |
operator>= |
Compare two decode views for greater than or equal |
operator> |
Compare two decode views for greater than |
operator> |
Compare two decode views for greater than |
operator> |
Compare two decode views for greater than |
operator<= |
Compare two decode views for less than or equal |
operator<= |
Compare two decode views for less than or equal |
operator<= |
Compare two decode views for less than or equal |
operator< |
Compare two decode views for less than |
operator< |
Compare two decode views for less than |
operator< |
Compare two decode views for less than |
operator!= |
Compare two decode views for inequality |
operator!= |
Compare two decode views for inequality |
operator!= |
Compare two decode views for inequality |
operator== |
Compare two decode views for equality |
operator== |
Compare two decode views for equality |
operator== |
Compare two decode views for equality |
These views reference strings in parts of URLs or other components that are percent-encoded. The special characters (those not in the allowed character set) are stored as three character escapes that consist of a percent sign ('%%') followed by a two-digit hexadecimal number of the corresponding unescaped character code, which may be part of a UTF-8 code point depending on the context.
The view refers to the original character buffer and only decodes escaped sequences when needed. In particular these operations perform percent-decoding automatically without the need to allocate memory:
Iteration of the string
Accessing the encoded character buffer
Comparison to encoded or plain strings
These objects can only be constructed from strings that have a valid percent-encoding, otherwise construction fails. The caller is responsible for ensuring that the lifetime of the character buffer from which the view is constructed extends unmodified until the view is no longer accessed.
An iterator of constant, decoded characters.
This iterator is used to access the encoded string as a bidirectional range of characters with percent-decoding applied. Escape sequences are not decoded until the iterator is dereferenced.
The reference type
The signed integer type
The reference type
The unsigned integer type
The value type
An iterator of constant, decoded characters.
| Name | Description |
|---|---|
decode_view |
A reference to a valid, percent-encoded string |
This iterator is used to access the encoded string as a bidirectional range of characters with percent-decoding applied. Escape sequences are not decoded until the iterator is dereferenced.
Constructor
<boost/url/decode_view.hpp>Constructor
constexpr
decode_view() noexcept = default;
» more...
Constructor
constexpr
explicit
decode_view(
pct_string_view s,
encoding_opts opt = {}) noexcept;
» more...
| Name | Description |
|---|---|
| s | A percent-encoded string that has already been validated. Implicit conversion from other string types is supported but may throw exceptions. |
| opt | The options for decoding. If this parameter is omitted, the default options are used. |
Constructor
Default-constructed views represent empty strings.
decode_view ds;
this->empty() == true
Constant.
Throws nothing.
Constructor
<boost/url/decode_view.hpp>
constexpr
explicit
decode_view(
pct_string_view s,
encoding_opts opt = {}) noexcept;
This constructs a view from the character buffer s, which must remain valid and unmodified until the view is no longer accessed.
decode_view ds( "Program%20Files" );
this->encoded() == s
Linear in s.size().
Although this function does not throw exceptions, implicitly constructing a pct_string_view for the first argument can throw exceptions on invalid input.
| Name | Description |
|---|---|
| s | A percent-encoded string that has already been validated. Implicit conversion from other string types is supported but may throw exceptions. |
| opt | The options for decoding. If this parameter is omitted, the default options are used. |
Return the last character
assert( decode_view( "Program%20Files" ).back() == 's' );
not this->empty()
Constant.
Throws nothing.
Return an iterator to the beginning
auto it = this->begin();
Constant.
Throws nothing.
Return the result of comparing to another string
<boost/url/decode_view.hpp>Return the result of comparing to another string
constexpr
int
compare(decode_view other) const noexcept;
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Return the result of comparing to another string
constexpr
int
compare(core::string_view other) const noexcept;
» more...
| Name | Description |
|---|---|
| other | string to compare |
Return the result of comparing to another string
<boost/url/decode_view.hpp>
constexpr
int
compare(decode_view other) const noexcept;
The length of the sequences to compare is the smaller of size() and other.size().
The function compares the two strings as if by calling char_traits<char>::compare(to_string().data(), v.to_string().data(), rlen). This means the comparison is performed with percent-decoding applied to the current string.
| Name | Description |
|---|---|
| other | string to compare |
Return the result of comparing to another string
<boost/url/decode_view.hpp>
constexpr
int
compare(core::string_view other) const noexcept;
The length of the sequences to compare is the smaller of size() and other.size().
The function compares the two strings as if by calling char_traits<char>::compare(to_string().data(), v.data(), rlen). This means the comparison is performed with percent-decoding applied to the current string.
| Name | Description |
|---|---|
| other | string to compare |
Return true if the string is empty
assert( decode_view( "" ).empty() );
Constant.
Throws nothing.
true if the string is empty
Return an iterator to the end
auto it = this->end();
Constant.
Throws nothing.
Checks if the string ends with the given prefix
<boost/url/decode_view.hpp>Checks if the string ends with the given prefix
bool
ends_with(core::string_view s) const noexcept;
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Checks if the string ends with the given prefix
bool
ends_with(char ch) const noexcept;
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true if the decoded string ends with strue if the decoded string ends with ch| Name | Description |
|---|---|
| s | The string to search for |
| ch | The character to search for |
Checks if the string ends with the given prefix
<boost/url/decode_view.hpp>
bool
ends_with(core::string_view s) const noexcept;
assert( decode_view( "Program%20Files" ).ends_with("Files") );
Linear.
Throws nothing.
true if the decoded string ends with s
| Name | Description |
|---|---|
| s | The string to search for |
Checks if the string ends with the given prefix
assert( decode_view( "Program%20Files" ).ends_with('s') );
Constant.
Throws nothing.
true if the decoded string ends with ch
| Name | Description |
|---|---|
| ch | The character to search for |
Finds the first occurrence of character in this view
Linear.
Throws nothing.
ch or end()
| Name | Description |
|---|---|
| ch | The character to search for |
Return the first character
assert( decode_view( "Program%20Files" ).front() == 'P' );
not this->empty()
Constant.
Throws nothing.
Return the decoding options
Remove the first characters
decode_view d( "Program%20Files" );
d.remove_prefix( 8 );
assert( d == "Files" );
not this->empty()
Linear.
| Name | Description |
|---|---|
| n | The number of characters to remove |
Remove the last characters
decode_view d( "Program%20Files" );
d.remove_prefix( 6 );
assert( d == "Program" );
not this->empty()
Linear.
| Name | Description |
|---|---|
| n | The number of characters to remove |
Finds the first occurrence of character in this view
Linear.
Throws nothing.
ch or end()
| Name | Description |
|---|---|
| ch | The character to search for |
Return the number of decoded characters
assert( decode_view( "Program%20Files" ).size() == 13 );
return std::distance( this->begin(), this->end() );
Constant.
Throws nothing.
Checks if the string begins with the given prefix
<boost/url/decode_view.hpp>Checks if the string begins with the given prefix
bool
starts_with(core::string_view s) const noexcept;
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Checks if the string begins with the given prefix
bool
starts_with(char ch) const noexcept;
» more...
true if the decoded string starts with strue if the decoded string starts with ch| Name | Description |
|---|---|
| s | The string to search for |
| ch | The character to search for |
Checks if the string begins with the given prefix
<boost/url/decode_view.hpp>
bool
starts_with(core::string_view s) const noexcept;
assert( decode_view( "Program%20Files" ).starts_with("Program") );
Linear.
Throws nothing.
true if the decoded string starts with s
| Name | Description |
|---|---|
| s | The string to search for |
Checks if the string begins with the given prefix
assert( decode_view( "Program%20Files" ).starts_with('P') );
Constant.
Throws nothing.
true if the decoded string starts with ch
| Name | Description |
|---|---|
| ch | The character to search for |
Percent-encoding options
| Name | Description |
|---|---|
encoding_opts [constructor] | Constructs an encoding_opts object with the specified options. |
| Name | Description |
|---|---|
disallow_null | True if nulls are not allowed |
lower_case | True if hexadecimal digits are emitted as lower case |
space_as_plus | True if spaces encode to and from plus signs |
These options are used to customize the behavior of algorithms which use percent escapes, such as encoding or decoding.
Constructs an encoding_opts object with the specified options.
<boost/url/encoding_opts.hpp>
constexpr
encoding_opts(
bool const space_as_plus = false,
bool const lower_case = false,
bool const disallow_null = false) noexcept;
| Name | Description |
|---|---|
| space_as_plus | If true, spaces will be encoded as plus signs. |
| lower_case | If true, hexadecimal digits will be emitted as lower case. |
| disallow_null | If true, null characters will not be allowed. |
True if nulls are not allowed
Normally all possible character values (from 0 to 255) are allowed, with reserved characters being replaced with escapes upon encoding. When this option is true, attempting to decode a null will result in an error.
True if hexadecimal digits are emitted as lower case
By default, percent-encoding algorithms emit hexadecimal digits A through F as uppercase letters. When this option is true, lowercase letters are used.
True if spaces encode to and from plus signs
Although not prescribed by RFC 3986, many applications decode plus signs in URL queries as spaces. In particular, the form-urlencoded Media Type in HTML for submitting forms uses this convention.
This option controls whether the PLUS character ("+") is used to represent the SP character (" ") when encoding or decoding.
When this option is true, both the encoded SP ("%20") and the PLUS character ("+") represent a space (" ") when decoding. To represent a plus sign, its encoded form ("%2B") is used.
The encode and encoded_size functions will encode spaces as plus signs when this option is true, regardless of the allowed character set. They will also encode plus signs as "%2B" when this option is true, regardless of the allowed character set.
Note that when a URL is normalized, all unreserved percent-encoded characters are replaced with their unreserved equivalents. However, normalizing the URL query maintains the decoded and encoded "&=+" as they are because they might have different meanings.
This behavior is not optional because normalization can only mitigate false negatives, but it should eliminate false positives. Making it optional would allow a false positive because there's at least one very relevant schema (HTTP) where a decoded or encoded "&=+" has different meanings and represents different resources.
The same considerations apply to URL comparison algorithms in the library, as they treat URLs as if they were normalized.
An optional parameter to determine case-sensitivity
| Name | Description |
|---|---|
ignore_case_param [constructor] | Constructor |
operator bool | True if an algorithm should ignore case |
Functions may use parameters of this type to allow the user to optionally indicate that comparisons should be case-insensitive when the value ignore_case is passed.
Constructor
<boost/url/ignore_case.hpp>Constructor
constexpr
ignore_case_param() noexcept = default;
» more...
Constructor
constexpr
ignore_case_param(/* implementation-defined */ value) noexcept;
» more...
Constructor
By default, comparisons are case-sensitive.
This function performs case-sensitive comparisons when called with no arguments:
void f( ignore_case_param = {} );
Constructor
<boost/url/ignore_case.hpp>
constexpr
ignore_case_param(/* implementation-defined */ value) noexcept;
Construction from ignore_case indicates that comparisons should be case-insensitive.
The first parameter to this function should be the variable ignore_case.
When ignore_case is passed as an argument, this function ignores case when performing comparisons:
void f( ignore_case_param(ignore_case) );
| Name | Description |
|---|---|
| value | The object to construct from |
True if an algorithm should ignore case
Values of type ignore_case_param evaluate to true when constructed with the constant ignore_case. Otherwise, they are default-constructed and evaluate to false.
true if case should be ignored
An IP version 4 style address.
| Name | Description |
|---|---|
bytes_type | The type used to represent an address as an array of bytes |
uint_type | The type used to represent an address as an unsigned integer |
| Name | Description |
|---|---|
ipv4_address [constructor] | Constructors |
operator= | Copy Assignment. |
is_loopback | Return true if the address is a loopback address |
is_multicast | Return true if the address is a multicast address |
is_unspecified | Return true if the address is unspecified |
to_buffer | Write a dotted decimal string representing the address to a buffer |
to_bytes | Return the address as bytes, in network byte order. |
to_string | Return the address as a string in dotted decimal format |
to_uint | Return the address as an unsigned integer. |
| Name | Description |
|---|---|
any | Return an address object that represents any address |
broadcast | Return an address object that represents the broadcast address |
loopback | Return an address object that represents the loopback address |
| Name | Description |
|---|---|
max_str_len | The number of characters in the longest possible IPv4 string. |
| Name | Description |
|---|---|
ipv6_address |
An IP version 6 style address. |
operator<< |
Format the address to an output stream. |
operator!= |
Return true if two addresses are not equal |
operator== |
Return true if two addresses are equal |
| Name | Description |
|---|---|
parse_ipv4_address | Return an IPv4 address from an IP address string in dotted decimal form |
Objects of this type are used to construct, parse, and manipulate IP version 6 addresses.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
The type used to represent an address as an array of bytes
The type used to represent an address as an unsigned integer
Constructors
<boost/url/ipv4_address.hpp>Constructor.
constexpr
ipv4_address() = default;
» more...
Constructor.
constexpr
ipv4_address(ipv4_address const& other) = default;
» more...
Construct from a string.
explicit
ipv4_address(core::string_view s);
» more...
Construct from an unsigned integer.
explicit
ipv4_address(uint_type u) noexcept;
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Construct from an array of bytes.
explicit
ipv4_address(bytes_type const& bytes) noexcept;
» more...
| Name | Thrown on |
|---|---|
system_error |
The input failed to parse correctly. |
| Name | Description |
|---|---|
| s | The string to parse. |
| u | The integer to construct from. |
| bytes | The value to construct from. |
Constructor.
Constructor.
<boost/url/ipv4_address.hpp>
constexpr
ipv4_address(ipv4_address const& other) = default;
| Name | Description |
|---|---|
| other | The object to copy construct from |
Construct from a string.
This function constructs an address from the string s, which must contain a valid IPv4 address string or else an exception is thrown.
For a non-throwing parse function, use parse_ipv4_address.
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The input failed to parse correctly. |
| Name | Description |
|---|---|
| s | The string to parse. |
Construct from an unsigned integer.
This function constructs an address from the unsigned integer u, where the most significant byte forms the first octet of the resulting address.
| Name | Description |
|---|---|
| u | The integer to construct from. |
Construct from an array of bytes.
<boost/url/ipv4_address.hpp>
explicit
ipv4_address(bytes_type const& bytes) noexcept;
This function constructs an address from the array in bytes, which is interpreted in big-endian.
| Name | Description |
|---|---|
| bytes | The value to construct from. |
Copy Assignment.
<boost/url/ipv4_address.hpp>
constexpr
ipv4_address&
operator=(ipv4_address const& other) = default;
| Name | Description |
|---|---|
| other | The object to copy. |
Return true if the address is a loopback address
true if the address is a loopback address
Return true if the address is a multicast address
true if the address is a multicast address
Return true if the address is unspecified
true if the address is unspecified
Write a dotted decimal string representing the address to a buffer
<boost/url/ipv4_address.hpp>
core::string_view
to_buffer(
char* dest,
std::size_t dest_size) const;
The resulting buffer is not null-terminated.
| Name | Thrown on |
|---|---|
std::length_error |
dest_size < ipv4_address::max_str_len |
| Name | Description |
|---|---|
| dest | The buffer in which to write, which must have at least dest_size space. |
| dest_size | The size of the output buffer. |
Return the address as bytes, in network byte order.
Return the address as a string in dotted decimal format
<boost/url/ipv4_address.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
to_string(StringToken&& token = {}) const;
When called with no arguments, the return type is std::string. Otherwise, the return type and style of output is determined by which string token is passed.
assert( ipv4_address(0x01020304).to_string() == "1.2.3.4" );
Constant.
Strong guarantee. Calls to allocate may throw. String tokens may throw exceptions.
std::string is returned. Otherwise, the function return type is the result type of the token.
| Name | Description |
|---|---|
| token | An optional string token. |
Return the address as an unsigned integer.
Return an address object that represents any address
Return an address object that represents the broadcast address
Return an address object that represents the loopback address
The number of characters in the longest possible IPv4 string.
<boost/url/ipv4_address.hpp>
inline constexpr static
std::size_t max_str_len = 15;
The longest ipv4 address string is "255.255.255.255".
An IP version 6 style address.
| Name | Description |
|---|---|
bytes_type | The type used to represent an address as an array of bytes. |
| Name | Description |
|---|---|
ipv6_address [constructor] | Constructors |
operator= | Copy Assignment |
is_loopback | Return true if the address is a loopback address |
is_unspecified | Return true if the address is unspecified |
is_v4_mapped | Return true if the address is a mapped IPv4 address |
to_buffer | Write a dotted decimal string representing the address to a buffer |
to_bytes | Return the address as bytes, in network byte order |
to_string | Return the address as a string. |
| Name | Description |
|---|---|
loopback | Return an address object that represents the loopback address |
| Name | Description |
|---|---|
max_str_len | The number of characters in the longest possible IPv6 string. |
| Name | Description |
|---|---|
operator<< |
Format the address to an output stream |
operator!= |
Return true if two addresses are not equal |
operator== |
Return true if two addresses are equal |
| Name | Description |
|---|---|
parse_ipv6_address | Parse a string containing an IPv6 address. |
Objects of this type are used to construct, parse, and manipulate IP version 6 addresses.
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
The type used to represent an address as an array of bytes.
Octets are stored in network byte order.
Constructors
<boost/url/ipv6_address.hpp>Constructor.
constexpr
ipv6_address() = default;
» more...
Constructor.
constexpr
ipv6_address(ipv6_address const& other) = default;
» more...
Construct from a string.
ipv6_address(core::string_view s);
» more...
Construct from an array of bytes.
ipv6_address(bytes_type const& bytes) noexcept;
» more...
Construct from an IPv4 address.
ipv6_address(ipv4_address const& addr) noexcept;
» more...
| Name | Thrown on |
|---|---|
system_error |
The input failed to parse correctly. |
| Name | Description |
|---|---|
| s | The string to parse. |
| bytes | The value to construct from. |
| addr | The address to construct from. |
Constructor.
Default constructed objects represent the unspecified address.
Constructor.
<boost/url/ipv6_address.hpp>
constexpr
ipv6_address(ipv6_address const& other) = default;
| Name | Description |
|---|---|
| other | The object to copy construct from |
Construct from a string.
This function constructs an address from the string s, which must contain a valid IPv6 address string or else an exception is thrown.
For a non-throwing parse function, use parse_ipv6_address.
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The input failed to parse correctly. |
| Name | Description |
|---|---|
| s | The string to parse. |
Construct from an array of bytes.
This function constructs an address from the array in bytes, which is interpreted in big-endian.
| Name | Description |
|---|---|
| bytes | The value to construct from. |
Construct from an IPv4 address.
This function constructs an IPv6 address from the IPv4 address addr. The resulting address is an IPv4-Mapped IPv6 Address.
| Name | Description |
|---|---|
| addr | The address to construct from. |
Copy Assignment
<boost/url/ipv6_address.hpp>
constexpr
ipv6_address&
operator=(ipv6_address const& other) = default;
*this
| Name | Description |
|---|---|
| other | The object to copy assign from |
Return true if the address is a loopback address
The unicast address 0:0:0:0:0:0:0:1 is called the loopback address. It may be used by a node to send an IPv6 packet to itself.
true if the address is a loopback address
Return true if the address is unspecified
The address 0:0:0:0:0:0:0:0 is called the unspecified address. It indicates the absence of an address.
true if the address is unspecified
Return true if the address is a mapped IPv4 address
This address type is used to represent the addresses of IPv4 nodes as IPv6 addresses.
true if the address is a mapped IPv4 address
Write a dotted decimal string representing the address to a buffer
<boost/url/ipv6_address.hpp>
core::string_view
to_buffer(
char* dest,
std::size_t dest_size) const;
The resulting buffer is not null-terminated.
| Name | Thrown on |
|---|---|
std::length_error |
dest_size < ipv6_address::max_str_len |
| Name | Description |
|---|---|
| dest | The buffer in which to write, which must have at least dest_size space. |
| dest_size | The size of the output buffer. |
Return the address as bytes, in network byte order
Return the address as a string.
<boost/url/ipv6_address.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
to_string(StringToken&& token) const;
The returned string does not contain surrounding square brackets.
When called with no arguments, the return type is std::string. Otherwise, the return type and style of output is determined by which string token is passed.
ipv6_address::bytes_type b = {{
0, 1, 0, 2, 0, 3, 0, 4,
0, 5, 0, 6, 0, 7, 0, 8 }};
ipv6_address a(b);
assert(a.to_string() == "1:2:3:4:5:6:7:8");
assert( ipv4_address(0x01020304).to_string() == "1.2.3.4" );
Constant.
Strong guarantee. Calls to allocate may throw. String tokens may throw exceptions.
std::string is returned. Otherwise, the function return type is the result type of the token.
| Name | Description |
|---|---|
| token | An optional string token. |
Return an address object that represents the loopback address
The unicast address 0:0:0:0:0:0:0:1 is called the loopback address. It may be used by a node to send an IPv6 packet to itself.
The number of characters in the longest possible IPv6 string.
<boost/url/ipv6_address.hpp>
inline constexpr static
std::size_t max_str_len = 49;
The longest IPv6 address is:
ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
The type of no_value
A query parameter
| Name | Description |
|---|---|
param [constructor] | Constructors |
operator= | Assignment |
operator-> | Arrow support |
| Name | Description |
|---|---|
has_value | True if a value is present |
key | The key |
value | The value |
Objects of this type represent a single key and value pair in a query string where a key is always present and may be empty, while the presence of a value is indicated by has_value equal to true. An empty value is distinct from no value.
Depending on where the object was obtained, the strings may or may not contain percent escapes.
For most usages, key comparisons are case-sensitive and duplicate keys in a query are possible. However, it is the authority that has final control over how the query is interpreted.
query-params = query-param *( "&" query-param )
query-param = key [ "=" value ]
key = *qpchar
value = *( qpchar / "=" )
Constructors
<boost/url/param.hpp>Constructor
constexpr
param() = default;
» more...
Constructor
constexpr
param(param const& other) = default;
» more...
Constructor
param(param&& other) noexcept;
» more...
Constructor
template<class OptionalString>
param(
core::string_view key,
OptionalString const& value);
» more...
Aggregate construction
param(
core::string_view key,
core::string_view value,
bool has_value) noexcept;
» more...
| Name | Description |
|---|---|
| OptionalString | An optional string type, such as core::string_view, std::nullptr, no_value_t, or optional<core::string_view>. |
| Name | Description |
|---|---|
| other | The object to construct from. |
| key | The key to set. |
| value | The value to set. |
| has_value | True if a value is present. |
Constructor
Default constructed query parameters have an empty key and no value.
param qp;
this->key == "" && this->value == "" && this->has_value == false
Constant.
Throws nothing.
Constructor
Upon construction, this becomes a copy of other.
this->key == other.key && this->value == other.value && this->has_value == other.has_value
Linear in other.key.size() + other.value.size().
Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The object to construct from. |
Constructor
Upon construction, this acquires ownership of the members of other via move construction. The moved from object is as if default constructed.
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The object to construct from. |
Constructor
<boost/url/param.hpp>
template<class OptionalString>
param(
core::string_view key,
OptionalString const& value);
This constructs a parameter with a key and value.
No validation is performed on the strings. Ownership of the key and value is acquired by making copies.
param qp( "key", "value" );
param qp( "key", optional<core::string_view>("value") );
param qp( "key", boost::none );
param qp( "key", nullptr );
param qp( "key", no_value );
this->key == key && this->value == value && this->has_value == true
Linear in key.size() + value.size().
Calls to allocate may throw.
| Name | Description |
|---|---|
| OptionalString | An optional string type, such as core::string_view, std::nullptr, no_value_t, or optional<core::string_view>. |
| Name | Description |
|---|---|
| key | The key to set. |
| value | The value to set. |
Aggregate construction
<boost/url/param.hpp>
param(
core::string_view key,
core::string_view value,
bool has_value) noexcept;
| Name | Description |
|---|---|
| key | The key to set. |
| value | The value to set. |
| has_value | True if a value is present. |
Assignment
<boost/url/param.hpp>Assignment
constexpr
param&
operator=(param const& other) = default;
» more...
Assignment
param&
operator=(param&& other) noexcept;
» more...
Assignment
param&
operator=(param_pct_view const& other);
» more...
Assignment
param&
operator=(param_view const& other);
» more...
| Name | Description |
|---|---|
| other | The object to assign from. |
Assignment
<boost/url/param.hpp>
constexpr
param&
operator=(param const& other) = default;
Upon assignment, this becomes a copy of other.
this->key == other.key && this->value == other.value && this->has_value == other.has_value
Linear in other.key.size() + other.value.size().
Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The object to assign from. |
Assignment
Upon assignment, this acquires ownership of the members of other via move assignment. The moved from object is as if default constructed.
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The object to assign from. |
Assignment
The members of other are copied, re-using already existing string capacity.
this->key == other.key && this->value == other.value && this->has_value == other.has_value
Linear in other.key.size() + other.value.size().
Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The parameter to copy. |
Assignment
The members of other are copied, re-using already existing string capacity.
this->key == other.key && this->value == other.value && this->has_value == other.has_value
Linear in other.key.size() + other.value.size().
Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The parameter to copy. |
Arrow support
This operator returns the address of the object so that it can be used in pointer contexts.
True if a value is present
The presence of a value is indicated by has_value == true. An empty value is distinct from no value.
The key
For most usages, key comparisons are case-sensitive and duplicate keys in a query are possible. However, it is the authority that has final control over how the query is interpreted.
The value
The presence of a value is indicated by has_value equal to true. An empty value is distinct from no value.
A view of a percent-encoded query parameter
| Name | Description |
|---|---|
param_pct_view [constructor] | Constructors |
operator-> | Arrow support |
operator param | Conversion |
operator param_view | Conversion to param_view |
| Name | Description |
|---|---|
has_value | True if a value is present |
key | The key |
value | The value |
Objects of this type represent a single key and value pair in a query string where a key is always present and may be empty, while the presence of a value is indicated by has_value equal to true. An empty value is distinct from no value.
The strings may have percent escapes, and offer an additional invariant: they never contain an invalid percent-encoding.
For most usages, key comparisons are case-sensitive and duplicate keys in a query are possible. However, it is the authority that has final control over how the query is interpreted.
Keys and values in this object reference external character buffers. Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.
query-params = query-param *( "&" query-param )
query-param = key [ "=" value ]
key = *qpchar
value = *( qpchar / "=" )
Constructors
<boost/url/param.hpp>Constructor
constexpr
param_pct_view() = default;
» more...
Construction
explicit
param_pct_view(param_view const& p);
» more...
Constructor
param_pct_view(
pct_string_view key,
pct_string_view value) noexcept;
» more...
Constructor
template<class OptionalString>
param_pct_view(
pct_string_view key,
OptionalString const& value);
» more...
Aggregate construction
param_pct_view(
pct_string_view key,
pct_string_view value,
bool has_value) noexcept;
» more...
| Name | Thrown on |
|---|---|
system_error |
key or value contains an invalid percent escape. |
| Name | Description |
|---|---|
| OptionalString | An optional core::string_view type, such as boost::optional<core::string_view> or std::optional<core::string_view>. |
| Name | Description |
|---|---|
| p | The param to construct from. |
| key | The key to set. |
| value | The value to set. |
| has_value | True if a value is present |
Constructor
Default constructed query parameters have an empty key and no value.
param_pct_view qp;
this->key == "" && this->value == "" && this->has_value == false
Constant.
Throws nothing.
Construction
This converts a param which may contain unvalidated percent-escapes into a param whose key and value are guaranteed to contain strings with no invalid percent-escapes, otherwise an exception is thrown.
The new key and value reference the same corresponding underlying character buffers. Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.
param_pct_view qp( param_view( "key", "value" ) );
Linear in key.size() + value.size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key or value contains an invalid percent escape. |
| Name | Description |
|---|---|
| p | The param to construct from. |
Constructor
<boost/url/param.hpp>
param_pct_view(
pct_string_view key,
pct_string_view value) noexcept;
This constructs a parameter with a key and value, which may both contain percent escapes. The new key and value reference the same corresponding underlying character buffers. Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.
param_pct_view qp( "key", "value" );
this->key.data() == key.data() && this->value.data() == value.data() && this->has_value == true
Linear in key.size() + value.size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key or value contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to set. |
| value | The value to set. |
Constructor
<boost/url/param.hpp>
template<class OptionalString>
param_pct_view(
pct_string_view key,
OptionalString const& value);
This constructs a parameter with a key and optional value, which may both contain percent escapes.
The new key and value reference the same corresponding underlying character buffers.
Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.
param_pct_view qp( "key", optional<core::string_view>("value") );
this->key.data() == key.data() && this->value->data() == value->data() && this->has_value == true
Linear in key.size() + value->size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key or value contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| OptionalString | An optional core::string_view type, such as boost::optional<core::string_view> or std::optional<core::string_view>. |
| Name | Description |
|---|---|
| key | The key to set. |
| value | The optional value to set. |
Aggregate construction
<boost/url/param.hpp>
param_pct_view(
pct_string_view key,
pct_string_view value,
bool has_value) noexcept;
| Name | Description |
|---|---|
| key | The key |
| value | The value |
| has_value | True if a value is present |
Arrow support
This operator returns the address of the object so that it can be used in pointer contexts.
Conversion
This function performs a conversion from a reference-like query parameter to one retaining ownership of the strings by making a copy.
Linear in this->key.size() + this->value.size().
Calls to allocate may throw.
Conversion to param_view
This function performs a conversion from a pct_string_view query parameter to one using a simple string_view.
Calls to allocate may throw.
True if a value is present
The presence of a value is indicated by has_value == true. An empty value is distinct from no value.
The key
For most usages, key comparisons are case-sensitive and duplicate keys in a query are possible. However, it is the authority that has final control over how the query is interpreted.
The value
The presence of a value is indicated by has_value equal to true. An empty value is distinct from no value.
A view of a query parameter
| Name | Description |
|---|---|
param_view [constructor] | Constructors |
operator-> | Arrow support |
operator param | Conversion |
| Name | Description |
|---|---|
has_value | True if a value is present |
key | The key |
value | The value |
Objects of this type represent a single key and value pair in a query string where a key is always present and may be empty, while the presence of a value is indicated by has_value equal to true. An empty value is distinct from no value.
Depending on where the object was obtained, the strings may or may not contain percent escapes. Some functions and objects might expect encoded strings in this view, while others expect decoded strings. The caller should be aware of the context in which the object will be used.
For most usages, key comparisons are case-sensitive and duplicate keys in a query are possible. However, it is the authority that has final control over how the query is interpreted.
Keys and values in this object reference external character buffers. Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.
query-params = query-param *( "&" query-param )
query-param = key [ "=" value ]
key = *qpchar
value = *( qpchar / "=" )
Constructors
<boost/url/param.hpp>Constructor
constexpr
param_view() = default;
» more...
Constructor
param_view(param const& other) noexcept;
» more...
Constructor
template<class OptionalString>
param_view(
core::string_view key,
OptionalString const& value) noexcept;
» more...
Aggregate construction
param_view(
core::string_view key_,
core::string_view value_,
bool has_value_) noexcept;
» more...
| Name | Description |
|---|---|
| OptionalString | An optional string type, such as core::string_view, std::nullptr, no_value_t, or optional<core::string_view>. |
| Name | Description |
|---|---|
| other | The param to reference |
| key | The key to set. |
| value | The value to set. |
| key_ | The key to set. |
| value_ | The value to set. |
| has_value_ | True if a value is present. |
Constructor
Default constructed query parameters have an empty key and no value.
param_view qp;
this->key == "" && this->value == "" && this->has_value == false
Constant.
Throws nothing.
Constructor
This function constructs a param which references the character buffers representing the key and value in another container. Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.
param qp( "key", "value" );
param_view qpv( qp );
this->key == key && this->value == value && this->has_value == other.has_value
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The param to reference |
Constructor
<boost/url/param.hpp>
template<class OptionalString>
param_view(
core::string_view key,
OptionalString const& value) noexcept;
This constructs a parameter with a key and value. No validation is performed on the strings. The new key and value reference the same corresponding underlying character buffers. Ownership of the buffers is not transferred; the caller is responsible for ensuring that the assigned buffers remain valid until they are no longer referenced.
param_view qp( "key", "value" );
this->key.data() == key.data() && this->value.data() == value.data() && this->has_value == true
Constant.
Throws nothing.
| Name | Description |
|---|---|
| OptionalString | An optional string type, such as core::string_view, std::nullptr, no_value_t, or optional<core::string_view>. |
| Name | Description |
|---|---|
| key | The key to set. |
| value | The value to set. |
Aggregate construction
<boost/url/param.hpp>
param_view(
core::string_view key_,
core::string_view value_,
bool has_value_) noexcept;
| Name | Description |
|---|---|
| key_ | The key to set. |
| value_ | The value to set. |
| has_value_ | True if a value is present. |
Arrow support
This operator returns the address of the object so that it can be used in pointer contexts.
Conversion
This function performs a conversion from a reference-like query parameter to one retaining ownership of the strings by making a copy. No validation is performed on the strings.
Linear in this->key.size() + this->value.size().
Calls to allocate may throw.
True if a value is present
The presence of a value is indicated by has_value == true. An empty value is distinct from no value.
The key
For most usages, key comparisons are case-sensitive and duplicate keys in a query are possible. However, it is the authority that has final control over how the query is interpreted.
The value
The presence of a value is indicated by has_value equal to true. An empty value is distinct from no value.
Common functionality for query parameter containers
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a query parameter |
const_iterator | A Bidirectional iterator to a query parameter |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type to represent sizes. |
value_type | The value type |
| Name | Description |
|---|---|
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
contains | Return true if a matching key exists |
count | Return the number of matching keys |
empty | Return true if there are no params |
end | Return an iterator to the end |
find | Find a matching key |
find_last | Find a matching key |
size | Return the number of params |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
params_view |
A view representing query parameters in a URL |
params_ref |
A view representing query parameters in a URL |
url_view_base |
Common functionality for containers |
| Name | Description |
|---|---|
params_ref
| A view representing query parameters in a URL |
params_view
| A view representing query parameters in a URL |
The library uses this base class to provide common member functions for containers of query parameters.
This class should not be instantiated directly; Instead, use one of the containers or functions:
params_ref
params_view
params_encoded_ref
params_encoded_view
A Bidirectional iterator to a query parameter
Objects of this type allow iteration through the parameters in the query. Any percent-escapes in returned strings are decoded first. The values returned are read-only; changes to parameters must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced belong to the iterator and become invalidated when that particular iterator is incremented, decremented, or destroyed.
The implementation may use temporary, recycled storage to store decoded strings. These iterators are meant to be used ephemerally. That is, for short durations such as within a function scope. Do not store iterators with static storage duration or as long-lived objects.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
A signed integer type used to represent differences.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
An unsigned integer type to represent sizes.
The value type
Values of this type represent parameters whose strings retain unique ownership by making a copy.
params_view::value_type qp( *url_view( "?first=John&last=Doe" ).params().find( "first" ) );
A Bidirectional iterator to a query parameter
| Name | Description |
|---|---|
params_ref |
A view representing query parameters in a URL |
params_base |
Common functionality for query parameter containers |
Objects of this type allow iteration through the parameters in the query. Any percent-escapes in returned strings are decoded first. The values returned are read-only; changes to parameters must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced belong to the iterator and become invalidated when that particular iterator is incremented, decremented, or destroyed.
The implementation may use temporary, recycled storage to store decoded strings. These iterators are meant to be used ephemerally. That is, for short durations such as within a function scope. Do not store iterators with static storage duration or as long-lived objects.
Return an iterator to the beginning
Linear in the size of the first param.
Throws nothing.
Return the referenced character buffer.
This function returns the character buffer referenced by the view. The returned string may contain percent escapes.
assert( url_view( "?first=John&last=Doe" ).params().buffer() == "?first=John&last=Doe" );
Constant.
Throws nothing.
Return true if a matching key exists
<boost/url/params_base.hpp>
bool
contains(
core::string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key. The comparison is performed as if all escaped characters were decoded first.
assert( url_view( "?first=John&last=Doe" ).params().contains( "first" ) );
Linear in this->buffer().size().
Throws nothing.
true if a matching key exists.
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Return the number of matching keys
<boost/url/params_base.hpp>
std::size_t
count(
core::string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find the number of matches for the specified key. The comparison is performed as if all escaped characters were decoded first.
assert( url_view( "?first=John&last=Doe" ).params().count( "first" ) == 1 );
Linear in this->buffer().size().
Throws nothing.
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Return true if there are no params
assert( ! url_view( "?key=value" ).params().empty() );
Constant.
Throws nothing.
true if there are no params.
Return an iterator to the end
Constant.
Throws nothing.
Find a matching key
<boost/url/params_base.hpp>Find a matching key
iterator
find(
core::string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
Find a matching key
iterator
find(
iterator from,
core::string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
| from | The position to begin the search from. This can be end(). |
Find a matching key
<boost/url/params_base.hpp>
iterator
find(
core::string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key. The comparison is performed as if all escaped characters were decoded first.
The search starts from the first param and proceeds forward until either the key is found or the end of the range is reached, in which case end() is returned.
assert( (*url_view( "?first=John&last=Doe" ).params().find( "First", ignore_case )).value == "John" );
return this->find( this->begin(), key, ic );
Linear in this->buffer().size().
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Find a matching key
<boost/url/params_base.hpp>
iterator
find(
iterator from,
core::string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key. The comparison is performed as if all escaped characters were decoded first.
The search starts at from and proceeds forward until either the key is found or the end of the range is reached, in which case end() is returned.
url_view u( "?First=John&Last=Doe" );
assert( u.params().find( "first" ) != u.params().find( "first", ignore_case ) );
Linear in this->buffer().size().
| Name | Description |
|---|---|
| from | The position to begin the search from. This can be end(). |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Find a matching key
<boost/url/params_base.hpp>Find a matching key
iterator
find_last(
core::string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
Find a matching key
iterator
find_last(
iterator before,
core::string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
| before | One past the position to begin the search from. This can be end(). |
Find a matching key
<boost/url/params_base.hpp>
iterator
find_last(
core::string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key. The comparison is performed as if all escaped characters were decoded first.
The search starts from the last param and proceeds backwards until either the key is found or the beginning of the range is reached, in which case end() is returned.
assert( (*url_view( "?first=John&last=Doe" ).params().find_last( "last" )).value == "Doe" );
Linear in this->buffer().size().
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Find a matching key
<boost/url/params_base.hpp>
iterator
find_last(
iterator before,
core::string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key. The comparison is performed as if all escaped characters were decoded first.
The search starts prior to before and proceeds backwards until either the key is found or the beginning of the range is reached, in which case end() is returned.
url_view u( "?First=John&Last=Doe" );
assert( u.params().find_last( "last" ) != u.params().find_last( "last", ignore_case ) );
Linear in this->buffer().size().
| Name | Description |
|---|---|
| before | One past the position to begin the search from. This can be end(). |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Return the number of params
assert( url_view( "?key=value").params().size() == 1 );
Constant.
Throws nothing.
Return the maximum number of characters possible
This represents the largest number of characters that are possible in a path, not including any null terminator.
Throws nothing.
Common functionality for containers
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a query parameter |
const_iterator | A Bidirectional iterator to a query parameter |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type to represent sizes. |
value_type | The value type |
| Name | Description |
|---|---|
begin | Return an iterator to the beginning |
buffer | Return the query corresponding to these params |
contains | Return true if a matching key exists |
count | Return the number of matching keys |
empty | Return true if there are no params |
end | Return an iterator to the end |
find | Find a matching key |
find_last | Find a matching key |
size | Return the number of params |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
params_encoded_view |
A view representing query parameters in a URL |
params_encoded_ref |
A view representing query parameters in a URL |
url_view_base |
Common functionality for containers |
| Name | Description |
|---|---|
params_encoded_ref
| A view representing query parameters in a URL |
params_encoded_view
| A view representing query parameters in a URL |
This base class is used by the library to provide common member functions for containers. This cannot be instantiated directly; Instead, use one of the containers or functions:
params_ref
params_view
params_encoded_ref
params_encoded_view
A Bidirectional iterator to a query parameter
Objects of this type allow iteration through the parameters in the query. Strings returned by iterators may contain percent escapes. The values returned are read-only; changes to parameters must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced refer to the underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced by any container or iterator.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
A signed integer type used to represent differences.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
An unsigned integer type to represent sizes.
The value type
Values of this type represent parameters whose strings retain unique ownership by making a copy.
params_encoded_view::value_type qp( *url_view( "?first=John&last=Doe" ).params().find( "first" ) );
A Bidirectional iterator to a query parameter
| Name | Description |
|---|---|
operator!= |
|
operator== |
|
params_encoded_ref |
A view representing query parameters in a URL |
params_encoded_base |
Common functionality for containers |
Objects of this type allow iteration through the parameters in the query. Strings returned by iterators may contain percent escapes. The values returned are read-only; changes to parameters must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced refer to the underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced by any container or iterator.
Return an iterator to the beginning
Linear in the size of the first param.
Throws nothing.
Return the query corresponding to these params
This function returns the query string referenced by the container. The returned string may contain percent escapes.
assert( url_view( "?first=John&last=Doe" ).encoded_params().buffer() == "first=John&last=Doe" );
Constant.
Throws nothing.
query-params = query-param *( "&" query-param )
query-param = key [ "=" value ]
key = *qpchar
value = *( qpchar / "=" )
Return true if a matching key exists
<boost/url/params_encoded_base.hpp>
bool
contains(
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key, which may contain percent escapes. The comparison is performed as if all escaped characters were decoded first.
assert( url_view( "?first=John&last=Doe" ).encoded_params().contains( "first" ) );
Linear in this->buffer().size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
true if a matching key exists.
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Return the number of matching keys
<boost/url/params_encoded_base.hpp>
std::size_t
count(
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find the number of matches for the specified key, which may contain percent escapes. The comparison is performed as if all escaped characters were decoded first.
assert( url_view( "?first=John&last=Doe" ).encoded_params().count( "first" ) == 1 );
Linear in this->buffer().size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Return true if there are no params
assert( ! url_view( "?key=value" ).encoded_params().empty() );
Constant.
Throws nothing.
true if there are no params.
Return an iterator to the end
Constant.
Throws nothing.
Find a matching key
<boost/url/params_encoded_base.hpp>Find a matching key
iterator
find(
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
Find a matching key
iterator
find(
iterator from,
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
| from | The position to begin the search from. This can be end(). |
Find a matching key
<boost/url/params_encoded_base.hpp>
iterator
find(
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key, which may contain percent escapes. The comparison is performed as if all escaped characters were decoded first.
The search starts from the first param and proceeds forward until either the key is found or the end of the range is reached, in which case end() is returned.
assert( url_view( "?first=John&last=Doe" ).encoded_params().find( "First", ignore_case )->value == "John" );
return this->find( this->begin(), key, ic );
Linear in this->buffer().size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Find a matching key
<boost/url/params_encoded_base.hpp>
iterator
find(
iterator from,
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key, which may contain percent escapes. The comparison is performed as if all escaped characters were decoded first.
The search starts at from and proceeds forward until either the key is found or the end of the range is reached, in which case end() is returned.
url_view u( "?First=John&Last=Doe" );
assert( u.encoded_params().find( "first" ) != u.encoded_params().find( "first", ignore_case ) );
Linear in this->buffer().size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| from | The position to begin the search from. This can be end(). |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Find a matching key
<boost/url/params_encoded_base.hpp>Find a matching key
iterator
find_last(
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
Find a matching key
iterator
find_last(
iterator before,
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
» more...
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
| before | One past the position to begin the search from. This can be end(). |
Find a matching key
<boost/url/params_encoded_base.hpp>
iterator
find_last(
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key, which may contain percent escapes. The comparison is performed as if all escaped characters were decoded first.
The search starts from the last param and proceeds backwards until either the key is found or the beginning of the range is reached, in which case end() is returned.
assert( url_view( "?first=John&last=Doe" ).encoded_params().find_last( "last" )->value == "Doe" );
Linear in this->buffer().size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Find a matching key
<boost/url/params_encoded_base.hpp>
iterator
find_last(
iterator before,
pct_string_view key,
ignore_case_param ic = {}) const noexcept;
This function examines the parameters in the container to find a match for the specified key, which may contain percent escapes. The comparison is performed as if all escaped characters were decoded first.
The search starts prior to before and proceeds backwards until either the key is found or the beginning of the range is reached, in which case end() is returned.
url_view u( "?First=John&Last=Doe" );
assert( u.encoded_params().find_last( "last" ) != u.encoded_params().find_last( "last", ignore_case ) );
Linear in this->buffer().size().
| Name | Description |
|---|---|
| before | One past the position to begin the search from. This can be end(). |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Return the number of params
assert( url_view( "?key=value").encoded_params().size() == 1 );
Constant.
Throws nothing.
Return the maximum number of characters possible
<boost/url/params_encoded_base.hpp>
constexpr
static
std::size_t
max_size() noexcept;
This represents the largest number of characters that are possible in a path, not including any null terminator.
Throws nothing.
A view representing query parameters in a URL
<boost/url/params_encoded_ref.hpp>
class params_encoded_ref
: public params_encoded_base
| Name | Description |
|---|---|
params_encoded_base | Common functionality for containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a query parameter |
const_iterator | A Bidirectional iterator to a query parameter |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type to represent sizes. |
value_type | The value type |
| Name | Description |
|---|---|
params_encoded_ref [constructor] | Constructor |
operator= | Assignment |
append | Append params |
assign | Assign params |
begin | Return an iterator to the beginning |
buffer | Return the query corresponding to these params |
clear | Clear the contents of the container |
contains | Return true if a matching key exists |
count | Return the number of matching keys |
empty | Return true if there are no params |
end | Return an iterator to the end |
erase | Erase params |
find | Find a matching key |
find_last | Find a matching key |
insert | Insert params |
replace | Replace params |
set | Set a value |
size | Return the number of params |
unset | Remove the value on an element |
url | Return the referenced url |
operator params_encoded_view | Conversion |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
url_base |
Common functionality for containers |
Objects of this type are used to interpret the query parameters as a bidirectional view of key value pairs.
The view does not retain ownership of the elements and instead references the original url. The caller is responsible for ensuring that the lifetime of the referenced url extends until it is no longer referenced.
The view is modifiable; calling non-const members causes changes to the referenced url.
url u( "?first=John&last=Doe" );
params_encoded_ref p = u.encoded_params();
Strings produced when elements are returned have type param_pct_view and represent encoded strings. Strings passed to member functions may contain percent escapes, and throw exceptions on invalid inputs.
Changes to the underlying character buffer can invalidate iterators which reference it. Modifications made through the container invalidate some iterators to the underlying character buffer:
append : Only `end()`.
assign, clear, `operator=` : All params.
erase : Erased params and all params after (including `end()`).
insert : All params at or after the insertion point (including `end()`).
replace, set : Modified params and all params after (including `end()`).
Constructor
<boost/url/params_encoded_ref.hpp>
constexpr
params_encoded_ref(params_encoded_ref const& other) = default;
After construction, both views reference the same url. Ownership is not transferred; the caller is responsible for ensuring the lifetime of the url extends until it is no longer referenced.
&this->url() == &other.url();
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Assignment
<boost/url/params_encoded_ref.hpp>Assignment
params_encoded_ref&
operator=(params_encoded_ref const& other);
» more...
Assignment
params_encoded_ref&
operator=(std::initializer_list<param_pct_view> init);
» more...
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| other | The params to assign. |
| init | The list of params to assign. |
Assignment
<boost/url/params_encoded_ref.hpp>
params_encoded_ref&
operator=(params_encoded_ref const& other);
The previous contents of this are replaced by the contents of `other.
All iterators are invalidated.
The strings referenced by other must not come from the underlying url, or else the behavior is undefined.
this->assign( other.begin(), other.end() );
Linear in other.buffer().size().
Strong guarantee. Calls to allocate may throw.
*this
| Name | Description |
|---|---|
| other | The params to assign. |
Assignment
<boost/url/params_encoded_ref.hpp>
params_encoded_ref&
operator=(std::initializer_list<param_pct_view> init);
After assignment, the previous contents of the query parameters are replaced by the contents of the initializer-list.
All iterators are invalidated.
None of character buffers referenced by init may overlap the character buffer of the underlying url, or else the behavior is undefined.
this->assign( init.begin(), init.end() );
Linear in init.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| init | The list of params to assign. |
Append params
<boost/url/params_encoded_ref.hpp>Append params
iterator
append(std::initializer_list<param_pct_view> init);
» more...
Append params
iterator
append(param_pct_view const& p);
» more...
Append params
template<class FwdIt>
iterator
append(
FwdIt first,
FwdIt last);
» more...
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| init | The list of params to append. |
| p | The param to append. |
| first | The first element to append. |
| last | One past the last element to append. |
Append params
<boost/url/params_encoded_ref.hpp>
iterator
append(std::initializer_list<param_pct_view> init);
This function appends the params in an initializer-list to the view.
The end() iterator is invalidated.
url u;
u.encoded_params().append({ {"first", "John"}, {"last", "Doe"} });
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| init | The list of params to append. |
Append params
This function appends a param to the view.
The end() iterator is invalidated.
url u;
u.encoded_params().append( { "first", "John" } );
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
p contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| p | The param to append. |
Append params
<boost/url/params_encoded_ref.hpp>
template<class FwdIt>
iterator
append(
FwdIt first,
FwdIt last);
This function appends a range of params to the view.
The end() iterator is invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_pct_view >::value == true
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The range contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| first | The first element to append. |
| last | One past the last element to append. |
Assign params
<boost/url/params_encoded_ref.hpp>Assign params
void
assign(std::initializer_list<param_pct_view> init);
» more...
Assign params
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
» more...
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| init | The list of params to assign. |
| first | The first element to assign. |
| last | One past the last element to assign. |
Assign params
<boost/url/params_encoded_ref.hpp>
void
assign(std::initializer_list<param_pct_view> init);
This function replaces the entire contents of the view with the params in the initializer-list.
All iterators are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
url u;
u.encoded_params().assign({ { "first", "John" }, { "last", "Doe" } });
Linear in init.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| init | The list of params to assign. |
Assign params
<boost/url/params_encoded_ref.hpp>
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
This function replaces the entire contents of the view with the params in the range.
All iterators are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_pct_view >::value == true
Linear in the size of the range.
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The range contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| first | The first element to assign. |
| last | One past the last element to assign. |
Clear the contents of the container
All iterators are invalidated.
this->url().remove_query();
this->empty() == true && this->url().has_query() == false
Constant.
Throws nothing.
Erase params
<boost/url/params_encoded_ref.hpp>Erase params
iterator
erase(iterator pos) noexcept;
» more...
Erase params
iterator
erase(
iterator first,
iterator last) noexcept;
» more...
Erase params
std::size_t
erase(
pct_string_view key,
ignore_case_param ic = {}) noexcept;
» more...
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| first | The first element to remove. |
| last | One past the last element to remove. |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Erase params
This function removes an element from the container.
All iterators that are equal to pos or come after are invalidated.
url u( "?first=John&last=Doe" );
params_encoded_ref::iterator it = u.encoded_params().erase( u.encoded_params().begin() );
assert( u.encoded_query() == "last=Doe" );
Linear in this->url().encoded_query().size().
Throws nothing.
| Name | Description |
|---|---|
| pos | An iterator to the element. |
Erase params
<boost/url/params_encoded_ref.hpp>
iterator
erase(
iterator first,
iterator last) noexcept;
This function removes a range of params from the container.
All iterators that are equal to first or come after are invalidated.
Linear in this->url().encoded_query().size().
Throws nothing.
| Name | Description |
|---|---|
| first | The first element to remove. |
| last | One past the last element to remove. |
Erase params
<boost/url/params_encoded_ref.hpp>
std::size_t
erase(
pct_string_view key,
ignore_case_param ic = {}) noexcept;
All iterators are invalidated.
this->count( key, ic ) == 0
Linear in this->url().encoded_query().size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Insert params
<boost/url/params_encoded_ref.hpp>Insert params
iterator
insert(
iterator before,
std::initializer_list<param_pct_view> init);
» more...
Insert params
iterator
insert(
iterator before,
param_pct_view const& p);
» more...
Insert params
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
» more...
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
before if init.size() == 0.before if first == last.| Name | Description |
|---|---|
| before | An iterator before which the element is inserted. This may be equal to end(). |
| init | The list of params to insert. |
| p | The param to insert. |
| first | The first element to insert. |
| last | One past the last element to insert. |
Insert params
<boost/url/params_encoded_ref.hpp>
iterator
insert(
iterator before,
std::initializer_list<param_pct_view> init);
This function inserts the params in an initializer-list before the specified position.
All iterators that are equal to before or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
before if init.size() == 0.
| Name | Description |
|---|---|
| before | An iterator before which the element is inserted. This may be equal to end(). |
| init | The list of params to insert. |
Insert params
<boost/url/params_encoded_ref.hpp>
iterator
insert(
iterator before,
param_pct_view const& p);
This function inserts a param before the specified position.
All iterators that are equal to before or come after are invalidated.
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
p contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| before | An iterator before which the param is inserted. This may be equal to end(). |
| p | The param to insert. |
Insert params
<boost/url/params_encoded_ref.hpp>
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
This function inserts a range of params before the specified position.
All iterators that are equal to before or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_pct_view >::value == true
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The range contains an invalid percent-encoding. |
before if first == last.| Name | Description |
|---|---|
| before | An iterator before which the element is inserted. This may be equal to end(). |
| first | The first element to insert. |
| last | One past the last element to insert. |
Replace params
<boost/url/params_encoded_ref.hpp>Replace params
iterator
replace(
iterator pos,
param_pct_view const& p);
» more...
Replace params
iterator
replace(
iterator from,
iterator to,
std::initializer_list<param_pct_view> init);
» more...
Replace params
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
» more...
| Name | Thrown on |
|---|---|
system_error |
p contains an invalid percent-encoding. |
to if init.size() == 0.to if first == last.to if first == last.| Name | Description |
|---|---|
| pos | An iterator to the element. |
| p | The param to assign. |
| from,to | The range of params to replace. |
| init | The list of params to assign. |
| from | The first element to replace. |
| to | One past the last element to replace. |
| first | The first element to insert. |
| last | One past the last element to insert. |
Replace params
<boost/url/params_encoded_ref.hpp>
iterator
replace(
iterator pos,
param_pct_view const& p);
This function replaces the contents of the element at pos with the specified param.
All iterators that are equal to pos or come after are invalidated.
The strings passed in must not come from the element being replaced, or else the behavior is undefined.
url u( "?first=John&last=Doe" );
u.encoded_params().replace( u.encoded_params().begin(), { "title", "Mr" });
assert( u.encoded_query() == "title=Mr&last=Doe" );
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
p contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| p | The param to assign. |
Replace params
<boost/url/params_encoded_ref.hpp>
iterator
replace(
iterator from,
iterator to,
std::initializer_list<param_pct_view> init);
This function replaces a range of params with the params in an initializer-list.
All iterators that are equal to from or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
init contains an invalid percent-encoding. |
to if init.size() == 0.
| Name | Description |
|---|---|
| from,to | The range of params to replace. |
| init | The list of params to assign. |
Replace params
<boost/url/params_encoded_ref.hpp>
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
This function replaces a range of params with a range of params.
All iterators that are equal to from or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_pct_view >::value == true
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The range contains an invalid percent-encoding. |
to if first == last.to if first == last.| Name | Description |
|---|---|
| from | The first element to replace. |
| to | One past the last element to replace. |
| first | The first element to insert. |
| last | One past the last element to insert. |
Set a value
<boost/url/params_encoded_ref.hpp>Set a value
iterator
set(
iterator pos,
pct_string_view value);
» more...
Set a value
iterator
set(
pct_string_view key,
pct_string_view value,
ignore_case_param ic = {});
» more...
| Name | Thrown on |
|---|---|
system_error |
value contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| value | The value to assign. The empty string still counts as a value. That is, has_value for the element is true. |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Set a value
<boost/url/params_encoded_ref.hpp>
iterator
set(
iterator pos,
pct_string_view value);
This function replaces the value of an element at the specified position.
All iterators that are equal to pos or come after are invalidated.
The string passed in must not come from the element being replaced, or else the behavior is undefined.
url u( "?id=42&id=69" );
u.encoded_params().set( u.encoded_params().begin(), "none" );
assert( u.encoded_query() == "id=none&id=69" );
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
value contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| value | The value to assign. The empty string still counts as a value. That is, has_value for the element is true. |
Set a value
<boost/url/params_encoded_ref.hpp>
iterator
set(
pct_string_view key,
pct_string_view value,
ignore_case_param ic = {});
This function performs one of two actions depending on the value of this->contains( key, ic ).
If key is contained in the view then one of the matching params has its value changed to the specified value. The remaining params with a matching key are erased. Otherwise,
If `key` is not contained in the view, then the function apppends the param `{ key, value }`.
All iterators are invalidated.
The strings passed in must not come from the element being replaced, or else the behavior is undefined.
url u( "?id=42&id=69" );
u.encoded_params().set( "id", "none" );
assert( u.encoded_params().count( "id" ) == 1 );
this->count( key, ic ) == 1 && this->find( key, ic )->value == value
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
key or value contain an invalid percent-encoding. |
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| value | The value to assign. The empty string still counts as a value. That is, has_value for the element is true. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Remove the value on an element
This function removes the value of an element at the specified position. After the call returns, has_value for the element is false.
All iterators that are equal to pos or come after are invalidated.
url u( "?first=John&last=Doe" );
u.encoded_params().unset( u.encoded_params().begin() );
assert( u.encoded_query() == "first&last=Doe" );
Linear in this->url().encoded_query().size().
Throws nothing.
| Name | Description |
|---|---|
| pos | An iterator to the element. |
Return the referenced url
This function returns the url referenced by the view.
url u( "?key=value" );
assert( &u.encoded_params().url() == &u );
Throws nothing.
Conversion
<boost/url/params_encoded_ref.hpp>
operator params_encoded_view() const noexcept;
Constant.
Throws nothing.
A view representing query parameters in a URL
<boost/url/params_encoded_view.hpp>
class params_encoded_view
: public params_encoded_base
| Name | Description |
|---|---|
params_encoded_base | Common functionality for containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a query parameter |
const_iterator | A Bidirectional iterator to a query parameter |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type to represent sizes. |
value_type | The value type |
| Name | Description |
|---|---|
params_encoded_view [constructor] | Constructor |
operator= | Assignment |
begin | Return an iterator to the beginning |
buffer | Return the query corresponding to these params |
contains | Return true if a matching key exists |
count | Return the number of matching keys |
empty | Return true if there are no params |
end | Return an iterator to the end |
find | Find a matching key |
find_last | Find a matching key |
size | Return the number of params |
operator params_view | Conversion |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
parse_query |
Parse a string and return an encoded params view |
params_encoded_ref |
A view representing query parameters in a URL |
params_view |
A view representing query parameters in a URL |
url_view_base |
Common functionality for containers |
Objects of this type are used to interpret the query parameters as a bidirectional view of key/value pairs.
The view does not retain ownership of the elements and instead references the original character buffer. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
url_view u( "?first=John&last=Doe" );
params_encoded_view p = u.encoded_params();
Strings produced when elements are returned have type param_pct_view and represent encoded strings. Strings passed to member functions may contain percent escapes, and throw exceptions on invalid inputs.
Changes to the underlying character buffer can invalidate iterators which reference it.
Constructor
<boost/url/params_encoded_view.hpp>Constructor
constexpr
params_encoded_view() = default;
» more...
Constructor
constexpr
params_encoded_view(params_encoded_view const& other) = default;
» more...
Constructor
params_encoded_view(core::string_view s);
» more...
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid query parameter string. |
| Name | Description |
|---|---|
| other | The object to copy |
| s | The string to parse. |
Constructor
Default-constructed params have zero elements.
params_encoded_view qp;
return params_encoded_view( "" );
Constant.
Throws nothing.
Constructor
<boost/url/params_encoded_view.hpp>
constexpr
params_encoded_view(params_encoded_view const& other) = default;
After construction both views reference the same character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing
| Name | Description |
|---|---|
| other | The object to copy |
Constructor
This function constructs params from a valid query parameter string, which can contain percent escapes. Unlike the parameters in URLs, the string passed here should not start with "?". Upon construction, the view references the character buffer pointed to by s. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
params_encoded_view qp( "first=John&last=Doe" );
return parse_query( s ).value();
this->buffer().data() == s.data()
Linear in s.
Exceptions thrown on invalid input.
query-params = [ query-param ] *( "&" query-param )
query-param = key [ "=" value ]
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid query parameter string. |
| Name | Description |
|---|---|
| s | The string to parse. |
Assignment
<boost/url/params_encoded_view.hpp>
constexpr
params_encoded_view&
operator=(params_encoded_view const& other) = default;
After assignment, both views reference the same underlying character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant
Throws nothing
*this
| Name | Description |
|---|---|
| other | The object to assign |
Conversion
This conversion returns a new view which references the same underlying character buffer, and whose iterators and members return ordinary strings with decoding applied to any percent escapes.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
params_view qp = parse_path( "/path/to/file.txt" ).value();
params_view( *this ).buffer().data() == this->buffer().data()
Constant
Throws nothing
A view representing query parameters in a URL
| Name | Description |
|---|---|
params_base | Common functionality for query parameter containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a query parameter |
const_iterator | A Bidirectional iterator to a query parameter |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type to represent sizes. |
value_type | The value type |
| Name | Description |
|---|---|
params_ref [constructor] | Constructor |
operator= | Assignment |
append | Append elements |
assign | Assign elements |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
clear | Clear the contents of the container |
contains | Return true if a matching key exists |
count | Return the number of matching keys |
empty | Return true if there are no params |
end | Return an iterator to the end |
erase | Erase elements |
find | Find a matching key |
find_last | Find a matching key |
insert | Insert elements |
replace | Replace elements |
set | Set a value |
size | Return the number of params |
unset | Remove the value on an element |
url | Return the referenced url |
operator params_view | Conversion |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
url_base |
Common functionality for containers |
Objects of this type are used to interpret the query parameters as a bidirectional view of key/value pairs. The view does not retain ownership of the elements and instead references the original url. The caller is responsible for ensuring that the lifetime of the referenced url extends until it is no longer referenced. The view is modifiable; calling non-const members causes changes to the referenced url.
Percent escapes in strings returned when dereferencing iterators are automatically decoded. Reserved characters in strings supplied to modifier functions are automatically percent-escaped.
url u( "?first=John&last=Doe" );
params_ref p = u.params();
Changes to the underlying character buffer can invalidate iterators which reference it. Modifications made through the container invalidate some or all iterators:
append : Only `end()`.
assign, clear, `operator=` : All elements.
erase : Erased elements and all elements after (including `end()`).
insert : All elements at or after the insertion point (including `end()`).
replace, set : Modified elements and all elements after (including `end()`).
Constructor
<boost/url/params_ref.hpp>Constructor
constexpr
params_ref(params_ref const& other) = default;
» more...
Constructor
params_ref(
params_ref const& other,
encoding_opts opt) noexcept;
» more...
| Name | Description |
|---|---|
| other | The other view. |
| opt | The options for decoding. If this parameter is omitted, space_as_plus is used. |
Constructor
<boost/url/params_ref.hpp>
constexpr
params_ref(params_ref const& other) = default;
After construction, both views reference the same url. Ownership is not transferred; the caller is responsible for ensuring the lifetime of the url extends until it is no longer referenced.
&this->url() == &other.url()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Constructor
<boost/url/params_ref.hpp>
params_ref(
params_ref const& other,
encoding_opts opt) noexcept;
After construction, both views will reference the same url but this instance will use the specified encoding_opts when the values are decoded.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the url extends until it is no longer referenced.
&this->url() == &other.url()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
| opt | The options for decoding. If this parameter is omitted, space_as_plus is used. |
Assignment
<boost/url/params_ref.hpp>Assignment
params_ref&
operator=(params_ref const& other);
» more...
Assignment
params_ref&
operator=(std::initializer_list<param_view> init);
» more...
*this
| Name | Description |
|---|---|
| other | The params to assign. |
| init | The list of params to assign. |
Assignment
The previous contents of this are replaced by the contents of `other.
All iterators are invalidated.
The strings referenced by other must not come from the underlying url, or else the behavior is undefined.
this->assign( other.begin(), other.end() );
Linear in other.buffer().size().
Strong guarantee. Calls to allocate may throw.
*this
| Name | Description |
|---|---|
| other | The params to assign. |
Assignment
<boost/url/params_ref.hpp>
params_ref&
operator=(std::initializer_list<param_view> init);
After assignment, the previous contents of the query parameters are replaced by the contents of the initializer-list.
None of character buffers referenced by init may overlap the character buffer of the underlying url, or else the behavior is undefined.
this->assign( init );
Linear in init.size().
Strong guarantee. Calls to allocate may throw.
*this
| Name | Description |
|---|---|
| init | The list of params to assign. |
Append elements
<boost/url/params_ref.hpp>Append elements
iterator
append(std::initializer_list<param_view> init);
» more...
Append elements
iterator
append(param_view const& p);
» more...
Append elements
template<class FwdIt>
iterator
append(
FwdIt first,
FwdIt last);
» more...
| Name | Description |
|---|---|
| init | The list of params to append. |
| p | The param to append. |
| first | The first element to append. |
| last | One past the last element to append. |
Append elements
<boost/url/params_ref.hpp>
iterator
append(std::initializer_list<param_view> init);
This function appends the params in an initializer-list to the view.
The end() iterator is invalidated.
url u;
u.params().append({ { "first", "John" }, { "last", "Doe" } });
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| init | The list of params to append. |
Append elements
This function appends a param to the view.
The end() iterator is invalidated.
url u;
u.params().append( { "first", "John" } );
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| p | The param to append. |
Append elements
<boost/url/params_ref.hpp>
template<class FwdIt>
iterator
append(
FwdIt first,
FwdIt last);
This function appends a range of params to the view.
The end() iterator is invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_view >::value == true
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| first | The first element to append. |
| last | One past the last element to append. |
Assign elements
<boost/url/params_ref.hpp>Assign elements
void
assign(std::initializer_list<param_view> init);
» more...
Assign elements
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
» more...
| Name | Description |
|---|---|
| init | The list of params to assign. |
| first | The first element to assign. |
| last | One past the last element to assign. |
Assign elements
<boost/url/params_ref.hpp>
void
assign(std::initializer_list<param_view> init);
This function replaces the entire contents of the view with the params in the initializer-list.
All iterators are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
url u;
u.params().assign( {{ "first", "John" }, { "last", "Doe" }} );
Linear in init.size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| init | The list of params to assign. |
Assign elements
<boost/url/params_ref.hpp>
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
This function replaces the entire contents of the view with the params in the range.
All iterators are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_view >::value == true
Linear in the size of the range.
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| first | The first element to assign. |
| last | One past the last element to assign. |
Clear the contents of the container
All iterators are invalidated.
this->url().remove_query();
this->empty() == true && this->url().has_query() == false
Constant.
Throws nothing.
Erase elements
<boost/url/params_ref.hpp>Erase elements
iterator
erase(iterator pos) noexcept;
» more...
Erase elements
iterator
erase(
iterator first,
iterator last) noexcept;
» more...
Erase elements
std::size_t
erase(
core::string_view key,
ignore_case_param ic = {}) noexcept;
» more...
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| first | The first element to remove. |
| last | One past the last element to remove. |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Erase elements
This function removes an element from the container.
All iterators that are equal to pos or come after are invalidated.
url u( "?first=John&last=Doe" );
params_ref::iterator it = u.params().erase( u.params().begin() );
assert( u.encoded_query() == "last=Doe" );
Linear in this->url().encoded_query().size().
Throws nothing.
| Name | Description |
|---|---|
| pos | An iterator to the element. |
Erase elements
<boost/url/params_ref.hpp>
iterator
erase(
iterator first,
iterator last) noexcept;
This function removes a range of elements from the container.
All iterators that are equal to first or come after are invalidated.
Linear in this->url().encoded_query().size().
Throws nothing.
| Name | Description |
|---|---|
| first | The first element to remove. |
| last | One past the last element to remove. |
Erase elements
<boost/url/params_ref.hpp>
std::size_t
erase(
core::string_view key,
ignore_case_param ic = {}) noexcept;
All iterators are invalidated.
this->count( key, ic ) == 0
Linear in this->url().encoded_query().size().
Throws nothing.
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Insert elements
<boost/url/params_ref.hpp>Insert elements
iterator
insert(
iterator before,
std::initializer_list<param_view> init);
» more...
Insert elements
iterator
insert(
iterator before,
param_view const& p);
» more...
Insert elements
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
» more...
before if init.size() == 0.before if first == last.before if first == last.| Name | Description |
|---|---|
| before | An iterator before which the element is inserted. This may be equal to end(). |
| init | The list of params to insert. |
| p | The param to insert. |
| first | The first element to insert. |
| last | One past the last element to insert. |
Insert elements
<boost/url/params_ref.hpp>
iterator
insert(
iterator before,
std::initializer_list<param_view> init);
This function inserts the params in an initializer-list before the specified position.
All iterators that are equal to before or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
before if init.size() == 0.
| Name | Description |
|---|---|
| before | An iterator before which the element is inserted. This may be equal to end(). |
| init | The list of params to insert. |
Insert elements
<boost/url/params_ref.hpp>
iterator
insert(
iterator before,
param_view const& p);
This function inserts a param before the specified position.
All iterators that are equal to before or come after are invalidated.
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| before | An iterator before which the param is inserted. This may be equal to end(). |
| p | The param to insert. |
Insert elements
<boost/url/params_ref.hpp>
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
This function inserts a range of params before the specified position.
All iterators that are equal to before or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_view >::value == true
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
before if first == last.before if first == last.| Name | Description |
|---|---|
| before | An iterator before which the element is inserted. This may be equal to end(). |
| first | The first element to insert. |
| last | One past the last element to insert. |
Replace elements
<boost/url/params_ref.hpp>Replace elements
iterator
replace(
iterator pos,
param_view const& p);
» more...
Replace elements
iterator
replace(
iterator from,
iterator to,
std::initializer_list<param_view> init);
» more...
Replace elements
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
» more...
to if init.size() == 0.to if first == last.to if first == last.| Name | Description |
|---|---|
| pos | An iterator to the element. |
| p | The param to assign. |
| from,to | The range of elements to replace. |
| init | The list of params to assign. |
| from | The first element to replace. |
| to | One past the last element to replace. |
| first | The first element to insert. |
| last | One past the last element to insert. |
Replace elements
<boost/url/params_ref.hpp>
iterator
replace(
iterator pos,
param_view const& p);
This function replaces the contents of the element at pos with the specified param.
All iterators that are equal to pos or come after are invalidated.
url u( "?first=John&last=Doe" );
u.params().replace( u.params().begin(), { "title", "Mr" });
assert( u.encoded_query() == "title=Mr&last=Doe" );
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| p | The param to assign. |
Replace elements
<boost/url/params_ref.hpp>
iterator
replace(
iterator from,
iterator to,
std::initializer_list<param_view> init);
This function replaces a range of elements with the params in an initializer-list.
All iterators that are equal to from or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
to if init.size() == 0.
| Name | Description |
|---|---|
| from,to | The range of elements to replace. |
| init | The list of params to assign. |
Replace elements
<boost/url/params_ref.hpp>
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
This function replaces a range of elements with a range of params.
All iterators that are equal to from or come after are invalidated.
The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_view >::value == true
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
to if first == last.to if first == last.| Name | Description |
|---|---|
| from | The first element to replace. |
| to | One past the last element to replace. |
| first | The first element to insert. |
| last | One past the last element to insert. |
Set a value
<boost/url/params_ref.hpp>Set a value
iterator
set(
iterator pos,
core::string_view value);
» more...
Set a value
iterator
set(
core::string_view key,
core::string_view value,
ignore_case_param ic = {});
» more...
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| value | The value to assign. The empty string still counts as a value. That is, has_value for the element is true. |
| key | The key to match. By default, a case-sensitive comparison is used. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Set a value
<boost/url/params_ref.hpp>
iterator
set(
iterator pos,
core::string_view value);
This function replaces the value of an element at the specified position.
All iterators that are equal to pos or come after are invalidated.
url u( "?id=42&id=69" );
u.params().set( u.params().begin(), "none" );
assert( u.encoded_query() == "id=none&id=69" );
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| value | The value to assign. The empty string still counts as a value. That is, has_value for the element is true. |
Set a value
<boost/url/params_ref.hpp>
iterator
set(
core::string_view key,
core::string_view value,
ignore_case_param ic = {});
This function performs one of two actions depending on the value of this->contains( key, ic ).
If key is contained in the view then one of the matching elements has its value changed to the specified value. The remaining elements with a matching key are erased. Otherwise,
If `key` is not contained in the view, then the function apppends the param `{ key, value }`.
All iterators are invalidated.
url u( "?id=42&id=69" );
u.params().set( "id", "none" );
assert( u.params().count( "id" ) == 1 );
this->count( key, ic ) == 1 && this->find( key, ic )->value == value
Linear in this->url().encoded_query().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| key | The key to match. By default, a case-sensitive comparison is used. |
| value | The value to assign. The empty string still counts as a value. That is, has_value for the element is true. |
| ic | An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive. |
Remove the value on an element
This function removes the value of an element at the specified position. After the call returns, has_value for the element is false.
All iterators that are equal to pos or come after are invalidated.
url u( "?first=John&last=Doe" );
u.params().unset( u.params().begin() );
assert( u.encoded_query() == "first&last=Doe" );
Linear in this->url().encoded_query().size().
Throws nothing.
| Name | Description |
|---|---|
| pos | An iterator to the element. |
Return the referenced url
This function returns the url referenced by the view.
url u( "?key=value" );
assert( &u.segments().url() == &u );
Throws nothing.
Conversion
A view representing query parameters in a URL
| Name | Description |
|---|---|
params_base | Common functionality for query parameter containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a query parameter |
const_iterator | A Bidirectional iterator to a query parameter |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type to represent sizes. |
value_type | The value type |
| Name | Description |
|---|---|
params_view [constructor] | Constructor |
operator= | Assignment |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
contains | Return true if a matching key exists |
count | Return the number of matching keys |
empty | Return true if there are no params |
end | Return an iterator to the end |
find | Find a matching key |
find_last | Find a matching key |
size | Return the number of params |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
params_ref |
A view representing query parameters in a URL |
params_encoded_view |
A view representing query parameters in a URL |
url_view_base |
Common functionality for containers |
Objects of this type are used to interpret the query parameters as a bidirectional view of key/value pairs.
The view does not retain ownership of the elements and instead references the original character buffer. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
url_view u( "?first=John&last=Doe" );
params_view p = u.params();
Percent escapes in strings returned when dereferencing iterators are automatically decoded.
Changes to the underlying character buffer can invalidate iterators which reference it.
Constructor
<boost/url/params_view.hpp>Constructor
params_view() = default;
» more...
Constructor
constexpr
params_view(params_view const& other) = default;
» more...
Constructor
params_view(core::string_view s);
» more...
Constructor
params_view(
core::string_view s,
encoding_opts opt);
» more...
Constructor
params_view(
params_view const& other,
encoding_opts opt) noexcept;
» more...
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid query parameter string. |
| Name | Description |
|---|---|
| other | The object to copy |
| s | The string to parse. |
| opt | The options for decoding. If this parameter is omitted, space_as_plus is used. |
Constructor
Default-constructed params have zero elements.
params_view qp;
return params_view( "" );
Constant.
Throws nothing.
Constructor
<boost/url/params_view.hpp>
constexpr
params_view(params_view const& other) = default;
After construction both views reference the same character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing
| Name | Description |
|---|---|
| other | The object to copy |
Constructor
This function constructs params from a valid query parameter string, which can contain percent escapes. Unlike the parameters in URLs, the string passed here should not start with "?". Upon construction, the view references the character buffer pointed to by s. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
params_view qp( "first=John&last=Doe" );
return parse_query( s ).value();
this->buffer().data() == s.data()
Linear in s.
Exceptions thrown on invalid input.
query-params = [ query-param ] *( "&" query-param )
query-param = key [ "=" value ]
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid query parameter string. |
| Name | Description |
|---|---|
| s | The string to parse. |
Constructor
<boost/url/params_view.hpp>
params_view(
core::string_view s,
encoding_opts opt);
This function constructs params from a valid query parameter string, which can contain percent escapes.
This instance will use the specified encoding_opts when the values are decoded.
Unlike the parameters in URLs, the string passed here should not start with "?". Upon construction, the view will reference the character buffer pointed to by s. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
encoding_opts opt;
opt.space_as_plus = true;
params_view qp( "name=John+Doe", opt );
return params_view(parse_query( s ).value(), opt);
this->buffer().data() == s.data()
Linear in s.
Exceptions thrown on invalid input.
query-params = [ query-param ] *( "&" query-param )
query-param = key [ "=" value ]
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid query parameter string. |
| Name | Description |
|---|---|
| s | The string to parse. |
| opt | The options for decoding. If this parameter is omitted, space_as_plus is used. |
Constructor
<boost/url/params_view.hpp>
params_view(
params_view const& other,
encoding_opts opt) noexcept;
After construction both views will reference the same character buffer but this instance will use the specified encoding_opts when the values are decoded.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing
| Name | Description |
|---|---|
| other | The object to copy |
| opt | The options for decoding |
Assignment
<boost/url/params_view.hpp>
params_view&
operator=(params_view const& other) = default;
After assignment, both views reference the same underlying character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant
Throws nothing
| Name | Description |
|---|---|
| other | The object to assign |
A reference to a valid percent-encoded string
<boost/url/pct_string_view.hpp>
class pct_string_view final
: public grammar::string_view_base
| Name | Description |
|---|---|
grammar::string_view_base | Common functionality for string views |
| Name | Description |
|---|---|
const_iterator | The const iterator type |
const_pointer | The const pointer type |
const_reference | The const reference type |
const_reverse_iterator | The const reverse iterator type |
difference_type | The difference type |
iterator | The iterator type |
pointer | The pointer type |
reference | The reference type |
reverse_iterator | The reverse iterator type |
size_type | The size type |
traits_type | The character traits |
value_type | The value type |
| Name | Description |
|---|---|
pct_string_view [constructor] | Constructors |
operator= | Assignment |
at | Access a character |
back | Return the last character |
begin | Return an iterator to the beginning |
cbegin | Return an iterator to the beginning |
cend | Return an iterator to the end |
compare | Return the result of comparing to another string |
contains | Return true if matching characters are found |
copy | Copy the characters to another buffer |
crbegin | Return a reverse iterator to the end |
crend | Return a reverse iterator to the beginning |
data | Return a pointer to the character buffer |
decode | Return the string with percent-decoding |
decoded_size | Return the decoded size |
empty | Return true if the string is empty |
end | Return an iterator to the end |
ends_with | Return true if a matching suffix exists |
find | Return the position of matching characters |
find_first_not_of | Return the position of the first non-match |
find_first_of | Return the position of the first match |
find_last_not_of | Return the position of the last non-match |
find_last_of | Return the position of the last match |
front | Return the first character |
length | Return the size |
max_size | Return the maximum allowed size |
operator* | Return the string as a range of decoded characters |
operator-> | Arrow support |
operator[] | Access a character |
rbegin | Return a reverse iterator to the end |
rend | Return a reverse iterator to the beginning |
rfind | Return the position of matching characters |
size | Return the size |
starts_with | Return true if a matching prefix exists |
substr | Return a view to part of the string |
swap | Swap |
operator std::string | Conversion |
operator std::string_view | Conversion |
| Name | Description |
|---|---|
npos | A constant used to represent "no position" |
| Name | Description |
|---|---|
operator= | Assignment |
swap | Swap |
| Name | Description |
|---|---|
s_ | The referenced character buffer |
| Name | Description |
|---|---|
make_pct_string_view |
Return a valid percent-encoded string |
Objects of this type behave like a core::string_view and have the same interface, but offer an additional invariant: they can only be constructed from strings containing valid percent-escapes.
Attempting construction from a string containing invalid or malformed percent escapes results in an exception.
Constructors
<boost/url/pct_string_view.hpp>Constructor
constexpr
pct_string_view() = default;
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Constructor
constexpr
pct_string_view(pct_string_view const& other) = default;
» more...
Constructor (deleted)
pct_string_view(std::nullptr_t value) = delete;
» more...
Constructor
pct_string_view(core::string_view s);
» more...
Constructor
template<std::convertible_to<core::string_view> String>
requires std::is_convertible<
String,
core::string_view
>::value
constexpr
pct_string_view(String const& s);
» more...
Constructor
pct_string_view(
char const* s,
std::size_t len);
» more...
| Name | Thrown on |
|---|---|
system_error |
The string contains an invalid percent encoding. |
| Name | Description |
|---|---|
| String | A type convertible to core::string_view |
| Name | Description |
|---|---|
| other | The string to copy. |
| s | The string to construct from. |
| len | The length of the string. |
Constructor
Default constructed string are empty.
Constant.
Throws nothing.
Constructor
<boost/url/pct_string_view.hpp>
constexpr
pct_string_view(pct_string_view const& other) = default;
The copy references the same underlying character buffer. Ownership is not transferred.
this->data() == other.data()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The string to copy. |
Constructor (deleted)
<boost/url/pct_string_view.hpp>
pct_string_view(std::nullptr_t value) = delete;
| Name | Description |
|---|---|
| value | The object to construct from |
Constructor
The newly constructed string references the specified character buffer. Ownership is not transferred.
this->data() == s.data() && this->size() == s.size()
Linear in s.size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The string contains an invalid percent encoding. |
| Name | Description |
|---|---|
| s | The string to construct from. |
Constructor
<boost/url/pct_string_view.hpp>
template<std::convertible_to<core::string_view> String>
requires std::is_convertible<
String,
core::string_view
>::value
constexpr
pct_string_view(String const& s);
The newly constructed string references the specified character buffer. Ownership is not transferred.
this->data() == core::string_view(s).data()
Linear in core::string_view(s).size().
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The string contains an invalid percent encoding. |
| Name | Description |
|---|---|
| String | A type convertible to core::string_view |
| Name | Description |
|---|---|
| s | The string to construct from. |
Constructor
<boost/url/pct_string_view.hpp>
pct_string_view(
char const* s,
std::size_t len);
The newly constructed string references the specified character buffer. Ownership is not transferred.
this->data() == s && this->size() == len
Linear in len.
Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The string contains an invalid percent encoding. |
| Name | Description |
|---|---|
| s | The string to construct from. |
| len | The length of the string. |
Assignment
<boost/url/pct_string_view.hpp>
constexpr
pct_string_view&
operator=(pct_string_view const& other) = default;
The copy references the same underlying character buffer. Ownership is not transferred.
this->data() == other.data()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The string to copy. |
Return the string with percent-decoding
<boost/url/pct_string_view.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
decode(
encoding_opts opt = {},
StringToken&& token) const;
This function converts percent escapes in the string into ordinary characters and returns the result. When called with no arguments, the return type is std::string. Otherwise, the return type and style of output is determined by which string token is passed.
assert( pct_string_view( "Program%20Files" ).decode() == "Program Files" );
Linear in this->size().
Calls to allocate may throw. String tokens may throw exceptions.
| Name | Description |
|---|---|
| opt | The options for encoding. If this parameter is omitted, the default options are used. |
| token | An optional string token. If this parameter is omitted, then a new std::string is returned. Otherwise, the function return type is the result type of the token. |
Return the decoded size
<boost/url/pct_string_view.hpp>
constexpr
std::size_t
decoded_size() const noexcept;
This function returns the number of characters in the resulting string if percent escapes were converted into ordinary characters.
Constant.
Throws nothing.
Return the string as a range of decoded characters
Constant.
Throws nothing.
Arrow support
<boost/url/pct_string_view.hpp>
pct_string_view const*
operator->() const noexcept;
Swap
| Name | Description |
|---|---|
| s | The object to swap with |
Common functionality for containers
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a path segment |
const_iterator | A Bidirectional iterator to a path segment |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type used to represent size. |
value_type | The value type |
| Name | Description |
|---|---|
back | Return the last segment |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
empty | Return true if there are no segments |
end | Return an iterator to the end |
front | Return the first segment |
is_absolute | Returns true if this references an absolute path. |
size | Return the number of segments |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
segments_view |
A view representing path segments in a URL |
segments_ref |
A view representing path segments in a URL |
url_view_base |
Common functionality for containers |
| Name | Description |
|---|---|
segments_ref
| A view representing path segments in a URL |
segments_view
| A view representing path segments in a URL |
This base class is used by the library to provide common member functions for containers. This cannot be instantiated directly; Instead, use one of the containers or functions:
segments_ref
segments_view
segments_encoded_ref
segments_encoded_view
A Bidirectional iterator to a path segment
Objects of this type allow iteration through the segments in the path. Any percent-escapes in returned strings are decoded first. The values returned are read-only; changes to segments must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced belong to the iterator and become invalidated when that particular iterator is incremented, decremented, or destroyed.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
A signed integer type used to represent differences.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
An unsigned integer type used to represent size.
The value type
Values of this type represent a segment where unique ownership is retained by making a copy.
segments_base::value_type ps( url_view( "/path/to/file.txt" ).segments().back() );
A Bidirectional iterator to a path segment
| Name | Description |
|---|---|
segments_ref |
A view representing path segments in a URL |
segments_base |
Common functionality for containers |
Objects of this type allow iteration through the segments in the path. Any percent-escapes in returned strings are decoded first. The values returned are read-only; changes to segments must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced belong to the iterator and become invalidated when that particular iterator is incremented, decremented, or destroyed.
Return the last segment
this->empty() == false
assert( url_view( "/path/to/file.txt" ).segments().back() == "file.txt" );
this->empty() == false
return *--end();
Linear in this->back().size().
Calls to allocate may throw.
Return an iterator to the beginning
Linear in this->front().size() or constant if this->empty().
Throws nothing.
Return the referenced character buffer.
This function returns the character buffer referenced by the view. The returned string may contain percent escapes.
assert( url_view( "/path/to/file.txt" ).segments().buffer() == "/path/to/file.txt" );
Constant.
Throws nothing.
Return true if there are no segments
assert( ! url_view( "/index.htm" ).segments().empty() );
Constant.
Throws nothing.
true if there are no segments, otherwise false.
Return an iterator to the end
Constant.
Throws nothing.
Return the first segment
This function returns a string with the first segment of the path without any leading or trailing '/' separators. Any percent-escapes in the string are decoded first.
this->empty() == false
return *begin();
assert( url_view( "/path/to/file.txt" ).segments().front() == "path" );
Linear in this->front().size().
Calls to allocate may throw.
Returns true if this references an absolute path.
Absolute paths always start with a forward slash ('/').
assert( url_view( "/path/to/file.txt" ).segments().is_absolute() == true );
Constant.
Throws nothing.
true if the path is absolute, otherwise false.
Return the number of segments
assert( url_view( "/path/to/file.txt" ).segments().size() == 3 );
Constant.
Throws nothing.
Return the maximum number of characters possible
<boost/url/segments_base.hpp>
constexpr
static
std::size_t
max_size() noexcept;
This represents the largest number of characters that are possible in a path, not including any null terminator.
Throws nothing.
Common functionality for containers
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a path segment |
const_iterator | A Bidirectional iterator to a path segment |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type used to represent size. |
value_type | The value type |
| Name | Description |
|---|---|
back | Return the last segment |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
empty | Return true if there are no segments |
end | Return an iterator to the end |
front | Return the first segment |
is_absolute | Returns true if this references an absolute path. |
size | Return the number of segments |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
segments_encoded_view |
A view representing path segments in a URL |
segments_encoded_ref |
A view representing path segments in a URL |
url_view_base |
Common functionality for containers |
| Name | Description |
|---|---|
segments_encoded_ref
| A view representing path segments in a URL |
segments_encoded_view
| A view representing path segments in a URL |
This base class is used by the library to provide common member functions for containers. This cannot be instantiated directly; Instead, use one of the containers or functions:
segments_ref
segments_view
segments_encoded_ref
segments_encoded_view
A Bidirectional iterator to a path segment
Objects of this type allow iteration through the segments in the path. Strings returned by iterators may contain percent escapes. The values returned are read-only; changes to segments must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced refer to the underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced by any container or iterator.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
A signed integer type used to represent differences.
The reference type
This is the type of value returned when iterators of the view are dereferenced.
An unsigned integer type used to represent size.
The value type
Values of this type represent a segment where unique ownership is retained by making a copy.
segments_encoded_base::value_type ps( url_view( "/path/to/file.txt" ).encoded_segments().back() );
A Bidirectional iterator to a path segment
| Name | Description |
|---|---|
segments_encoded_ref |
A view representing path segments in a URL |
segments_encoded_base |
Common functionality for containers |
url_base |
Common functionality for containers |
Objects of this type allow iteration through the segments in the path. Strings returned by iterators may contain percent escapes. The values returned are read-only; changes to segments must be made through the container instead, if the container supports modification.
The strings produced when iterators are dereferenced refer to the underlying character buffer. Ownership is not transferred; the caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced by any container or iterator.
Return the last segment
This function returns a string with the last segment of the path without any leading or trailing '/' separators. The returned string may contain percent escapes.
this->empty() == false
assert( url_view( "/path/to/file.txt" ).encoded_segments().back() == "file.txt" );
this->empty() == false
return *--end();
Constant.
Throws nothing.
Return an iterator to the beginning
Linear in this->front().size() or constant if this->empty().
Throws nothing.
Return the referenced character buffer.
This function returns the character buffer referenced by the view. The returned string may contain percent escapes.
assert( url_view( "/path/to/file.txt" ).encoded_segments().buffer() == "/path/to/file.txt" );
Constant.
Throws nothing.
Return true if there are no segments
assert( ! url_view( "/index.htm" ).encoded_segments().empty() );
Constant.
Throws nothing.
true if there are no segments, otherwise false.
Return an iterator to the end
Constant.
Throws nothing.
Return the first segment
This function returns a string with the first segment of the path without any leading or trailing '/' separators. The returned string may contain percent escapes.
this->empty() == false
return *begin();
assert( url_view( "/path/to/file.txt" ).encoded_segments().front() == "path" );
Constant.
Throws nothing.
Returns true if this references an absolute path.
Absolute paths always start with a forward slash ('/').
assert( url_view( "/path/to/file.txt" ).encoded_segments().is_absolute() == true );
Constant.
Throws nothing.
true if the path is absolute, otherwise false.
Return the number of segments
assert( url_view( "/path/to/file.txt" ).encoded_segments().size() == 3 );
Constant.
Throws nothing.
Return the maximum number of characters possible
<boost/url/segments_encoded_base.hpp>
constexpr
static
std::size_t
max_size() noexcept;
This represents the largest number of characters that are possible in a path, not including any null terminator.
Throws nothing.
A view representing path segments in a URL
<boost/url/segments_encoded_ref.hpp>
class segments_encoded_ref
: public segments_encoded_base
| Name | Description |
|---|---|
segments_encoded_base | Common functionality for containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a path segment |
const_iterator | A Bidirectional iterator to a path segment |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type used to represent size. |
value_type | The value type |
| Name | Description |
|---|---|
segments_encoded_ref [constructor] | Constructor |
operator= | Assignment |
assign | Assign segments |
back | Return the last segment |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
clear | Clear the contents of the container |
empty | Return true if there are no segments |
end | Return an iterator to the end |
erase | Erase segments |
front | Return the first segment |
insert | Insert segments |
is_absolute | Returns true if this references an absolute path. |
pop_back | Remove the last segment |
push_back | Append a segment |
replace | Replace segments |
size | Return the number of segments |
url | Return the referenced url |
operator segments_encoded_view | Conversion |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
url_base |
Common functionality for containers |
Objects of this type are used to interpret the path as a bidirectional view of segments, where each segment is a string which may contain percent-escapes.
The view does not retain ownership of the elements and instead references the original character buffer. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
The view is modifiable; calling non-const members causes changes to the referenced url.
url u( "/path/to/file.txt" );
segments_encoded_ref ps = u.encoded_segments();
The strings returned when iterators are dereferenced have type pct_string_view and may contain percent-escapes.
Reserved characters in inputs are automatically escaped. Escapes in inputs are preserved.
Exceptions are thrown on invalid inputs.
Changes to the underlying character buffer can invalidate iterators which reference it. Modifications made through the container invalidate some or all iterators:
push_back : Only `end()`.
assign, clear, operator= : All elements.
erase : Erased elements and all elements after (including `end()`).
insert : All elements at or after the insertion point (including `end()`).
replace : Modified elements and all elements after (including `end()`).
Constructor
<boost/url/segments_encoded_ref.hpp>
constexpr
segments_encoded_ref(segments_encoded_ref const& other) = default;
After construction, both views reference the same url. Ownership is not transferred; the caller is responsible for ensuring the lifetime of the url extends until it is no longer referenced.
&this->url() == &other.url();
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Assignment
<boost/url/segments_encoded_ref.hpp>Assignment
segments_encoded_ref&
operator=(segments_encoded_ref const& other);
» more...
Assignment
segments_encoded_ref&
operator=(std::initializer_list<pct_string_view> init);
» more...
Assignment
segments_encoded_ref&
operator=(segments_encoded_view const& other);
» more...
| Name | Thrown on |
|---|---|
system_error |
The list contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| other | The segments to assign. |
| init | The list of segments to assign. |
Assignment
<boost/url/segments_encoded_ref.hpp>
segments_encoded_ref&
operator=(segments_encoded_ref const& other);
The existing contents are replaced by a copy of the other segments.
All iterators are invalidated.
None of the character buffers referenced by other may overlap the buffer of the underlying url, or else the behavior is undefined.
this->assign( other.begin(), other.end() );
Linear in other.buffer().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The segments to assign. |
Assignment
<boost/url/segments_encoded_ref.hpp>
segments_encoded_ref&
operator=(std::initializer_list<pct_string_view> init);
The existing contents are replaced by a copy of the contents of the initializer list. Reserved characters in the list are automatically escaped. Escapes in the list are preserved.
All iterators are invalidated.
url u;
u.encoded_segments() = {"path", "to", "file.txt"};
None of the character buffers referenced by the list may overlap the character buffer of the underlying url, or else the behavior is undefined.
this->assign( init.begin(), init.end() );
Linear in init.size() + this->url().encoded_query().size() + this->url().encoded_fragment().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The list contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| init | The list of segments to assign. |
Assignment
<boost/url/segments_encoded_ref.hpp>
segments_encoded_ref&
operator=(segments_encoded_view const& other);
The existing contents are replaced by a copy of the other segments.
All iterators are invalidated.
None of the character buffers referenced by other may overlap the buffer of the underlying url, or else the behavior is undefined.
this->assign( other.begin(), other.end() );
Linear in other.buffer().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The segments to assign. |
Assign segments
<boost/url/segments_encoded_ref.hpp>Assign segments
void
assign(std::initializer_list<pct_string_view> init);
» more...
Assign segments
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
» more...
| Name | Thrown on |
|---|---|
system_error |
The list contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| init | The list of segments to assign. |
| first | The first element in the range. |
| last | One past the last element in the range. |
Assign segments
<boost/url/segments_encoded_ref.hpp>
void
assign(std::initializer_list<pct_string_view> init);
The existing contents are replaced by a copy of the contents of the initializer list. Reserved characters in the list are automatically escaped. Escapes in the list are preserved.
All iterators are invalidated.
None of the character buffers referenced by the list may overlap the character buffer of the underlying url, or else the behavior is undefined.
url u;
u.segments().assign( {"path", "to", "file.txt"} );
Linear in init.size() + this->url().encoded_query().size() + this->url().encoded_fragment().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The list contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| init | The list of segments to assign. |
Assign segments
<boost/url/segments_encoded_ref.hpp>
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
The existing contents are replaced by a copy of the contents of the range. Reserved characters in the range are automatically escaped. Escapes in the range are preserved.
All iterators are invalidated.
None of the character buffers referenced by the range may overlap the character buffer of the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, pct_string_view >::value == true
Linear in std::distance( first, last ) + this->url().encoded_query().size() + this->url().encoded_fragment().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The range contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| first | The first element in the range. |
| last | One past the last element in the range. |
Clear the contents of the container
All iterators are invalidated.
this->url().set_encoded_path( "" );
this->empty() == true
Linear in this->url().encoded_query().size() + this->url().encoded_fragment().size().
Throws nothing.
Erase segments
<boost/url/segments_encoded_ref.hpp>Erase segments
iterator
erase(iterator pos) noexcept;
» more...
Erase segments
iterator
erase(
iterator first,
iterator last) noexcept;
» more...
| Name | Description |
|---|---|
| pos | An iterator to the element. |
| first | The first element in the range to erase. |
| last | One past the last element in the range to erase. |
Erase segments
This function removes a segment.
All iterators that are equal to pos or come after are invalidated.
Linear in this->url().encoded_resource().size().
Throws nothing.
| Name | Description |
|---|---|
| pos | An iterator to the element. |
Erase segments
<boost/url/segments_encoded_ref.hpp>
iterator
erase(
iterator first,
iterator last) noexcept;
This function removes a range of segments from the container.
All iterators that are equal to first or come after are invalidated.
Linear in this->url().encoded_resource().size().
Throws nothing.
| Name | Description |
|---|---|
| first | The first element in the range to erase. |
| last | One past the last element in the range to erase. |
Insert segments
<boost/url/segments_encoded_ref.hpp>Insert segments
iterator
insert(
iterator before,
pct_string_view s);
» more...
Insert segments
iterator
insert(
iterator before,
std::initializer_list<pct_string_view> init);
» more...
Insert segments
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
» more...
| Name | Thrown on |
|---|---|
system_error |
The segment contains an invalid percent-encoding. |
before if init.size() == 0.before if init.empty().| Name | Description |
|---|---|
| before | An iterator before which the segment is inserted. This may be equal to end(). |
| s | The segment to insert. |
| init | The list of segments to insert. |
| first | The first element in the range to insert. |
| last | One past the last element in the range to insert. |
Insert segments
<boost/url/segments_encoded_ref.hpp>
iterator
insert(
iterator before,
pct_string_view s);
This function inserts a segment before the specified position. Reserved characters in the segment are automatically escaped. Escapes in the segment are preserved.
All iterators that are equal to before or come after are invalidated.
Linear in s.size() + this->url().encoded_resource().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The segment contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| before | An iterator before which the segment is inserted. This may be equal to end(). |
| s | The segment to insert. |
Insert segments
<boost/url/segments_encoded_ref.hpp>
iterator
insert(
iterator before,
std::initializer_list<pct_string_view> init);
This function inserts the segments in an initializer list before the specified position. Reserved characters in the list are automatically escaped. Escapes in the list are preserved.
All iterators that are equal to before or come after are invalidated.
None of the character buffers referenced by the list may overlap the character buffer of the underlying url, or else the behavior is undefined.
url u( "/file.txt" );
u.encoded_segments().insert( u.encoded_segments().begin(), { "path", "to" } );
Linear in init.size() + this->url().encoded_resource().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The list contains an invalid percent-encoding. |
before if init.size() == 0.
| Name | Description |
|---|---|
| before | An iterator before which the list is inserted. This may be equal to end(). |
| init | The list of segments to insert. |
Insert segments
<boost/url/segments_encoded_ref.hpp>
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
This function inserts the segments in a range before the specified position. Reserved characters in the range are automatically escaped. Escapes in the range are preserved.
All iterators that are equal to before or come after are invalidated.
None of the character buffers referenced by the range may overlap the character buffer of the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, pct_string_view >::value == true
Linear in std::distance( first, last ) + this->url().encoded_resource().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The range contains an invalid percent-encoding. |
before if init.empty().
| Name | Description |
|---|---|
| before | An iterator before which the range is inserted. This may be equal to end(). |
| first | The first element in the range to insert. |
| last | One past the last element in the range to insert. |
Remove the last segment
This function removes the last segment from the container.
Iterators to the last segment as well as all end iterators are invalidated.
!this->empty()
Throws nothing.
Append a segment
This function appends a segment to the end of the path. Reserved characters in the string are automatically escaped. Escapes in the string are preserved.
All end iterators are invalidated.
this->back() == s
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The string contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| s | The segment to append. |
Replace segments
<boost/url/segments_encoded_ref.hpp>Replace segments
iterator
replace(
iterator pos,
pct_string_view s);
» more...
Replace segments
iterator
replace(
iterator from,
iterator to,
pct_string_view s);
» more...
Replace segments
iterator
replace(
iterator from,
iterator to,
std::initializer_list<pct_string_view> init);
» more...
Replace segments
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
» more...
| Name | Thrown on |
|---|---|
system_error |
The string contains an invalid percent-encoding. |
to if init.size() == 0.| Name | Description |
|---|---|
| pos | An iterator to the segment. |
| s | The string to assign. |
| from | The first element in the range of segments to replace. |
| to | One past the last element in the range of segments to replace. |
| init | The list of segments to assign. |
| first | The first element in the new range of segments. |
| last | One past the last element in the new range of segments. |
Replace segments
<boost/url/segments_encoded_ref.hpp>
iterator
replace(
iterator pos,
pct_string_view s);
This function replaces the segment at the specified position. Reserved characters in the string are automatically escaped. Escapes in the string are preserved.
All iterators that are equal to pos or come after are invalidated.
Linear in s.size() + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| pos | An iterator to the segment. |
| s | The string to assign. |
Replace segments
<boost/url/segments_encoded_ref.hpp>
iterator
replace(
iterator from,
iterator to,
pct_string_view s);
This function replaces a range of segments with one segment. Reserved characters in the string are automatically escaped. Escapes in the string are preserved.
All iterators that are equal to from or come after are invalidated.
Linear in s.size() + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The string contains an invalid percent-encoding. |
| Name | Description |
|---|---|
| from | The first element in the range of segments to replace. |
| to | One past the last element in the range of segments to replace. |
| s | The string to assign. |
Replace segments
<boost/url/segments_encoded_ref.hpp>
iterator
replace(
iterator from,
iterator to,
std::initializer_list<pct_string_view> init);
This function replaces a range of segments with a list of segments in an initializer list. Reserved characters in the list are automatically escaped. Escapes in the list are preserved.
All iterators that are equal to from or come after are invalidated.
None of the character buffers referenced by the list may overlap the character buffer of the underlying url, or else the behavior is undefined.
Linear in init.size() + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The list contains an invalid percent-encoding. |
to if init.size() == 0.
| Name | Description |
|---|---|
| from | The first element in the range of segments to replace. |
| to | One past the last element in the range of segments to replace. |
| init | The list of segments to assign. |
Replace segments
<boost/url/segments_encoded_ref.hpp>
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
This function replaces a range of segments with annother range of segments. Reserved characters in the new range are automatically escaped. Escapes in the new range are preserved.
All iterators that are equal to from or come after are invalidated.
None of the character buffers referenced by the new range may overlap the character buffer of the underlying url, or else the behavior is undefined.
Linear in std::distance( first, last ) + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The range contains an invalid percent-encoding. |
to if init.size() == 0.
| Name | Description |
|---|---|
| from | The first element in the range of segments to replace. |
| to | One past the last element in the range of segments to replace. |
| first | The first element in the new range of segments. |
| last | One past the last element in the new range of segments. |
Return the referenced url
This function returns the url referenced by the view.
url u( "/path/to/file.txt" );
assert( &u.encoded_segments().url() == &u );
Throws nothing.
Conversion
<boost/url/segments_encoded_ref.hpp>
operator segments_encoded_view() const noexcept;
A view representing path segments in a URL
<boost/url/segments_encoded_view.hpp>
class segments_encoded_view
: public segments_encoded_base
| Name | Description |
|---|---|
segments_encoded_base | Common functionality for containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a path segment |
const_iterator | A Bidirectional iterator to a path segment |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type used to represent size. |
value_type | The value type |
| Name | Description |
|---|---|
segments_encoded_view [constructor] | Constructor |
operator= | Assignment |
back | Return the last segment |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
empty | Return true if there are no segments |
end | Return an iterator to the end |
front | Return the first segment |
is_absolute | Returns true if this references an absolute path. |
size | Return the number of segments |
operator segments_view | Conversion |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
parse_path |
Parse a string and return an encoded segment view |
segments_encoded_ref |
A view representing path segments in a URL |
url_view_base |
Common functionality for containers |
Objects of this type are used to interpret the path as a bidirectional view of segment strings.
The view does not retain ownership of the elements and instead references the original character buffer. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
url_view u( "/path/to/file.txt" );
segments_encoded_view ps = u.encoded_segments();
assert( ps.buffer().data() == u.buffer().data() );
Strings produced when elements are returned have type param_pct_view and represent encoded strings. Strings passed to member functions may contain percent escapes, and throw exceptions on invalid inputs.
Changes to the underlying character buffer can invalidate iterators which reference it.
Constructor
<boost/url/segments_encoded_view.hpp>Constructor
constexpr
segments_encoded_view() = default;
» more...
Constructor
constexpr
segments_encoded_view(segments_encoded_view const& other) noexcept = default;
» more...
Constructor
segments_encoded_view(core::string_view s);
» more...
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid path. |
| Name | Description |
|---|---|
| s | The string to parse. |
Constructor
<boost/url/segments_encoded_view.hpp>
constexpr
segments_encoded_view() = default;
Default-constructed segments have zero elements.
segments_encoded_view ps;
return segments_encoded_view( "" );
Constant.
Throws nothing.
Constructor
<boost/url/segments_encoded_view.hpp>
constexpr
segments_encoded_view(segments_encoded_view const& other) noexcept = default;
After construction, both views reference the same character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing
| Name | Description |
|---|---|
| other | The object to copy construct from |
Constructor
<boost/url/segments_encoded_view.hpp>
segments_encoded_view(core::string_view s);
This function constructs segments from a valid path string, which can contain percent escapes. Upon construction, the view references the character buffer pointed to by s. caller is responsible for ensuring that the lifetime of the buffer extends until the view is destroyed.
segments_encoded_view ps( "/path/to/file.txt" );
return parse_path( s ).value();
this->buffer().data() == s.data()
Linear in s.
Exceptions thrown on invalid input.
path = [ "/" ] [ segment *( "/" segment ) ]
segment = *pchar
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid path. |
| Name | Description |
|---|---|
| s | The string to parse. |
Assignment
<boost/url/segments_encoded_view.hpp>
constexpr
segments_encoded_view&
operator=(segments_encoded_view const& other) = default;
After assignment, both views reference the same underlying character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant
Throws nothing
| Name | Description |
|---|---|
| other | The segments to copy. |
Conversion
This conversion returns a new view which references the same underlying character buffer, and whose iterators and members return ordinary strings with decoding applied to any percent escapes.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
segments_view ps = parse_path( "/path/to/file.txt" ).value();
segments_view( *this ).buffer().data() == this->buffer().data()
Constant
Throws nothing
A view representing path segments in a URL
| Name | Description |
|---|---|
segments_base | Common functionality for containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a path segment |
const_iterator | A Bidirectional iterator to a path segment |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type used to represent size. |
value_type | The value type |
| Name | Description |
|---|---|
segments_ref [constructor] | Constructor |
operator= | Assignment |
assign | Assign segments |
back | Return the last segment |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
clear | Clear the contents of the container |
empty | Return true if there are no segments |
end | Return an iterator to the end |
erase | Erase segments |
front | Return the first segment |
insert | Insert segments |
is_absolute | Returns true if this references an absolute path. |
pop_back | Remove the last segment |
push_back | Append a segment |
replace | Replace segments |
size | Return the number of segments |
url | Return the referenced url |
operator segments_view | Conversion |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
segments_encoded_ref |
A view representing path segments in a URL |
url_base |
Common functionality for containers |
Objects of this type are used to interpret the path as a bidirectional view of segments, where each segment is a string with percent escapes automatically decoded.
The view does not retain ownership of the elements and instead references the original character buffer. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
The view is modifiable; calling non-const members causes changes to the referenced url.
url u( "/path/to/file.txt" );
segments_ref ps = u.segments();
Percent escapes in strings returned when dereferencing iterators are automatically decoded. Reserved characters in strings supplied to modifier functions are automatically percent-escaped.
Changes to the underlying character buffer can invalidate iterators which reference it. Modifications made through the container invalidate some or all iterators:
push_back : Only `end()`.
assign, clear, operator= : All elements.
erase : Erased elements and all elements after (including `end()`).
insert : All elements at or after the insertion point (including `end()`).
replace : Modified elements and all elements after (including `end()`).
Constructor
<boost/url/segments_ref.hpp>
constexpr
segments_ref(segments_ref const& other) = default;
After construction, both views reference the same url. Ownership is not transferred; the caller is responsible for ensuring the lifetime of the url extends until it is no longer referenced.
&this->url() == &other.url();
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Assignment
<boost/url/segments_ref.hpp>Assignment
segments_ref&
operator=(segments_ref const& other);
» more...
Assignment
segments_ref&
operator=(std::initializer_list<core::string_view> init);
» more...
Assignment
segments_ref&
operator=(segments_view const& other);
» more...
| Name | Description |
|---|---|
| other | The segments to assign. |
| init | The list of segments to assign. |
Assignment
<boost/url/segments_ref.hpp>
segments_ref&
operator=(segments_ref const& other);
The existing contents are replaced by a copy of the other segments.
All iterators are invalidated.
None of the character buffers referenced by other may overlap the buffer of the underlying url, or else the behavior is undefined.
this->assign( other.begin(), other.end() );
Linear in other.buffer().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The segments to assign. |
Assignment
<boost/url/segments_ref.hpp>
segments_ref&
operator=(std::initializer_list<core::string_view> init);
The existing contents are replaced by a copy of the contents of the initializer list. Reserved characters in the list are automatically escaped.
All iterators are invalidated.
url u;
u.segments() = { "path", "to", "file.txt" };
None of the character buffers referenced by the list may overlap the character buffer of the underlying url, or else the behavior is undefined.
this->assign( init.begin(), init.end() );
Linear in init.size() + this->url().encoded_query().size() + this->url().encoded_fragment().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| init | The list of segments to assign. |
Assignment
<boost/url/segments_ref.hpp>
segments_ref&
operator=(segments_view const& other);
The existing contents are replaced by a copy of the other segments.
All iterators are invalidated.
None of the character buffers referenced by other may overlap the buffer of the underlying url, or else the behavior is undefined.
this->assign( other.begin(), other.end() );
Linear in other.buffer().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| other | The segments to assign. |
Assign segments
<boost/url/segments_ref.hpp>Assign segments
void
assign(std::initializer_list<core::string_view> init);
» more...
Assign segments
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
» more...
| Name | Description |
|---|---|
| init | The list of segments to assign. |
| first | The beginning of the range of segments to assign. |
| last | The end of the range of segments to assign. |
Assign segments
<boost/url/segments_ref.hpp>
void
assign(std::initializer_list<core::string_view> init);
The existing contents are replaced by a copy of the contents of the initializer list. Reserved characters in the list are automatically escaped.
All iterators are invalidated.
None of the character buffers referenced by init may overlap the character buffer of the underlying url, or else the behavior is undefined.
url u;
u.segments().assign( { "path", "to", "file.txt" } );
Linear in init.size() + this->url().encoded_query().size() + this->url().encoded_fragment().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| init | The list of segments to assign. |
Assign segments
<boost/url/segments_ref.hpp>
template<class FwdIt>
void
assign(
FwdIt first,
FwdIt last);
The existing contents are replaced by a copy of the contents of the range. Reserved characters in the range are automatically escaped.
All iterators are invalidated.
None of the character buffers referenced by the range may overlap the character buffer of the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, core::string_view >::value == true
Linear in std::distance( first, last ) + this->url().encoded_query().size() + this->url().encoded_fragment().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| first | The beginning of the range of segments to assign. |
| last | The end of the range of segments to assign. |
Clear the contents of the container
All iterators are invalidated.
this->url().set_encoded_path( "" );
this->empty() == true
Linear in this->url().encoded_query().size() + this->url().encoded_fragment().size().
Throws nothing.
Erase segments
<boost/url/segments_ref.hpp>Erase segments
iterator
erase(iterator pos) noexcept;
» more...
Erase segments
iterator
erase(
iterator first,
iterator last) noexcept;
» more...
| Name | Description |
|---|---|
| pos | An iterator to the segment. |
| first | The beginning of the range to remove. |
| last | The end of the range to remove. |
Erase segments
This function removes a segment.
All iterators that are equal to pos or come after are invalidated.
Linear in this->url().encoded_resource().size().
Throws nothing.
| Name | Description |
|---|---|
| pos | An iterator to the segment. |
Erase segments
<boost/url/segments_ref.hpp>
iterator
erase(
iterator first,
iterator last) noexcept;
This function removes a range of segments.
All iterators that are equal to first or come after are invalidated.
Linear in this->url().encoded_resource().size().
Throws nothing.
| Name | Description |
|---|---|
| first | The beginning of the range to remove. |
| last | The end of the range to remove. |
Insert segments
<boost/url/segments_ref.hpp>Insert segments
iterator
insert(
iterator before,
core::string_view s);
» more...
Insert segments
iterator
insert(
iterator before,
std::initializer_list<core::string_view> init);
» more...
Insert segments
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
» more...
before if init.size() == 0.before if init.empty().| Name | Description |
|---|---|
| before | An iterator before which the segment is inserted. This may be equal to end(). |
| s | The segment to insert. |
| init | The list of segments to insert. |
| first | The beginning of the range of segments to insert. |
| last | The end of the range of segments to insert. |
Insert segments
<boost/url/segments_ref.hpp>
iterator
insert(
iterator before,
core::string_view s);
This function inserts a segment before the specified position. Reserved characters in the segment are automatically escaped.
All iterators that are equal to before or come after are invalidated.
Linear in s.size() + this->url().encoded_resource().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| before | An iterator before which the segment is inserted. This may be equal to end(). |
| s | The segment to insert. |
Insert segments
<boost/url/segments_ref.hpp>
iterator
insert(
iterator before,
std::initializer_list<core::string_view> init);
This function inserts the segments in an initializer list before the specified position. Reserved characters in the list are percent-escaped in the result.
All iterators that are equal to before or come after are invalidated.
None of the character buffers referenced by the list may overlap the character buffer of the underlying url, or else the behavior is undefined.
url u( "/file.txt" );
u.segments().insert( u.segments().begin(), { "path", "to" } );
Linear in init.size() + this->url().encoded_resource().size().
Strong guarantee. Calls to allocate may throw.
before if init.size() == 0.
| Name | Description |
|---|---|
| before | An iterator before which the list is inserted. This may be equal to end(). |
| init | The list of segments to insert. |
Insert segments
<boost/url/segments_ref.hpp>
template<class FwdIt>
iterator
insert(
iterator before,
FwdIt first,
FwdIt last);
This function inserts the segments in a range before the specified position. Reserved characters in the list are automatically escaped.
All iterators that are equal to before or come after are invalidated.
None of the character buffers referenced by the range may overlap the character buffer of the underlying url, or else the behavior is undefined.
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, core::string_view >::value == true
Linear in std::distance( first, last ) + this->url().encoded_resource().size().
Strong guarantee. Calls to allocate may throw.
before if init.empty().
| Name | Description |
|---|---|
| before | An iterator before which the range is inserted. This may be equal to end(). |
| first | The beginning of the range of segments to insert. |
| last | The end of the range of segments to insert. |
Remove the last segment
This function removes the last segment from the container.
Iterators to the last segment as well as all end iterators are invalidated.
not this->empty()
Throws nothing.
Append a segment
This function appends a segment to the end of the path. Reserved characters in the string are automatically escaped.
All end iterators are invalidated.
this->back() == s
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| s | The segment to append. |
Replace segments
<boost/url/segments_ref.hpp>Replace segments
iterator
replace(
iterator pos,
core::string_view s);
» more...
Replace segments
iterator
replace(
iterator from,
iterator to,
core::string_view s);
» more...
Replace segments
iterator
replace(
iterator from,
iterator to,
std::initializer_list<core::string_view> init);
» more...
Replace segments
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
» more...
to if init.size() == 0.| Name | Description |
|---|---|
| pos | An iterator to the segment. |
| s | The string to assign. |
| from | The beginning of the range of segments to replace. |
| to | The end of the range of segments to replace. |
| init | The list of segments to assign. |
| first | The beginning of the range of segments to assign. |
| last | The end of the range of segments to assign. |
Replace segments
<boost/url/segments_ref.hpp>
iterator
replace(
iterator pos,
core::string_view s);
This function replaces the segment at the specified position. Reserved characters in the string are automatically escaped.
All iterators that are equal to pos or come after are invalidated.
Linear in s.size() + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| pos | An iterator to the segment. |
| s | The string to assign. |
Replace segments
<boost/url/segments_ref.hpp>
iterator
replace(
iterator from,
iterator to,
core::string_view s);
This function replaces a range of segments with one segment. Reserved characters in the string are automatically escaped.
All iterators that are equal to from or come after are invalidated.
Linear in s.size() + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| from | The beginning of the range of segments to replace. |
| to | The end of the range of segments to replace. |
| s | The string to assign. |
Replace segments
<boost/url/segments_ref.hpp>
iterator
replace(
iterator from,
iterator to,
std::initializer_list<core::string_view> init);
This function replaces a range of segments with a list of segments in an initializer list. Reserved characters in the list are automatically escaped.
All iterators that are equal to from or come after are invalidated.
None of the character buffers referenced by the list may overlap the character buffer of the underlying url, or else the behavior is undefined.
Linear in init.size() + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw.
to if init.size() == 0.
| Name | Description |
|---|---|
| from | The beginning of the range of segments to replace. |
| to | The end of the range of segments to replace. |
| init | The list of segments to assign. |
Replace segments
<boost/url/segments_ref.hpp>
template<class FwdIt>
iterator
replace(
iterator from,
iterator to,
FwdIt first,
FwdIt last);
This function replaces a range of segments with annother range of segments. Reserved characters in the new range are automatically escaped.
All iterators that are equal to from or come after are invalidated.
None of the character buffers referenced by the new range may overlap the character buffer of the underlying url, or else the behavior is undefined.
Linear in std::distance( first, last ) + this->url().encoded_resouce().size().
Strong guarantee. Calls to allocate may throw.
to if init.size() == 0.
| Name | Description |
|---|---|
| from | The beginning of the range of segments to replace. |
| to | The end of the range of segments to replace. |
| first | The beginning of the range of segments to assign. |
| last | The end of the range of segments to assign. |
Return the referenced url
This function returns the url referenced by the view.
url u( "/path/to/file.txt" );
assert( &u.segments().url() == &u );
Throws nothing.
Conversion
A view representing path segments in a URL
| Name | Description |
|---|---|
segments_base | Common functionality for containers |
| Name | Description |
|---|---|
iterator | A Bidirectional iterator to a path segment |
const_iterator | A Bidirectional iterator to a path segment |
const_reference | The reference type |
difference_type | A signed integer type used to represent differences. |
reference | The reference type |
size_type | An unsigned integer type used to represent size. |
value_type | The value type |
| Name | Description |
|---|---|
segments_view [constructor] | Constructor |
operator= | Assignment |
back | Return the last segment |
begin | Return an iterator to the beginning |
buffer | Return the referenced character buffer. |
empty | Return true if there are no segments |
end | Return an iterator to the end |
front | Return the first segment |
is_absolute | Returns true if this references an absolute path. |
size | Return the number of segments |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
segments_ref |
A view representing path segments in a URL |
segments_encoded_view |
A view representing path segments in a URL |
url_view_base |
Common functionality for containers |
Objects of this type are used to interpret the path as a bidirectional view of segment strings.
The view does not retain ownership of the elements and instead references the original character buffer. The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
url_view u( "/path/to/file.txt" );
segments_view ps = u.segments();
assert( ps.buffer().data() == u.buffer().data() );
Percent escapes in strings returned when dereferencing iterators are automatically decoded.
Changes to the underlying character buffer can invalidate iterators which reference it.
Constructor
<boost/url/segments_view.hpp>Constructor
constexpr
segments_view() = default;
» more...
Constructor
constexpr
segments_view(segments_view const& other) = default;
» more...
Constructor
segments_view(core::string_view s);
» more...
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid path. |
| Name | Description |
|---|---|
| other | The other view. |
| s | The string to parse. |
Constructor
Default-constructed segments have zero elements.
segments_view ps;
return segments_view( "" );
Constant.
Throws nothing.
Constructor
<boost/url/segments_view.hpp>
constexpr
segments_view(segments_view const& other) = default;
After construction, viewss reference the same underlying character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant
Throws nothing
| Name | Description |
|---|---|
| other | The other view. |
Constructor
This function constructs segments from a valid path string, which can contain percent escapes. Upon construction, the view references the character buffer pointed to by s. caller is responsible for ensuring that the lifetime of the buffer extends until the view is destroyed.
segments_view ps( "/path/to/file.txt" );
return parse_path( s ).value();
this->buffer().data() == s.data()
Linear in s.
Exceptions thrown on invalid input.
path = [ "/" ] [ segment *( "/" segment ) ]
segment = *pchar
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid path. |
| Name | Description |
|---|---|
| s | The string to parse. |
Assignment
<boost/url/segments_view.hpp>
constexpr
segments_view&
operator=(segments_view const& other) = default;
After assignment, both views reference the same underlying character buffer.
Ownership is not transferred; the caller is responsible for ensuring the lifetime of the buffer extends until it is no longer referenced.
this->buffer().data() == other.buffer().data()
Constant
Throws nothing
| Name | Description |
|---|---|
| other | The other view. |
A modifiable container for a URL.
<boost/url/static_url.hpp>
template<std::size_t Capacity>
class static_url
: public static_url_base
| Name | Description |
|---|---|
static_url_base | Common implementation for all static URLs |
| Name | Description |
|---|---|
static_url [constructor] | Constructor |
~static_url [destructor] [virtual] | Destructor |
operator= | Assignment |
authority | Return the authority |
buffer | Return the url string |
c_str | Return the url as a null-terminated string |
capacity | Return the number of characters that can be stored without reallocating |
clear | Clear the contents while preserving the capacity |
compare | Return the result of comparing this with another url |
data | Return a pointer to the url's character buffer |
empty | Return true if the url is empty |
encoded_authority | Return the authority. |
encoded_fragment | Return the fragment |
encoded_host | Return the host |
encoded_host_address | Return the host |
encoded_host_and_port | Return the host and port |
encoded_host_name | Return the host name |
encoded_origin | Return the origin |
encoded_params | Return the query as a container of parameters |
encoded_password | Return the password |
encoded_path | Return the path |
encoded_query | Return the query |
encoded_resource | Return the resource |
encoded_segments | Return the path as a container of segments |
encoded_target | Return the target |
encoded_user | Return the user |
encoded_userinfo | Return the userinfo |
encoded_zone_id | Return the IPv6 Zone ID |
fragment | Return the fragment |
has_authority | Return true if an authority is present |
has_fragment | Return true if a fragment is present |
has_password | Return true if a password is present |
has_port | Return true if a port is present |
has_query | Return true if a query is present |
has_scheme | Return true a scheme is present |
has_userinfo | Return true if a userinfo is present |
host | Return the host |
host_address | Return the host |
host_ipv4_address | Return the host IPv4 address |
host_ipv6_address | Return the host IPv6 address |
host_ipvfuture | Return the host IPvFuture address |
host_name | Return the host name |
host_type | Return the host type |
is_path_absolute | Return true if the path is absolute |
normalize | Normalize the URL components |
normalize_authority | Normalize the URL authority |
normalize_fragment | Normalize the URL fragment |
normalize_path | Normalize the URL path |
normalize_query | Normalize the URL query |
normalize_scheme | Normalize the URL scheme |
params | Return the query as a container of parameters |
password | Return the password |
path | Return the path |
persist | Return a shared, persistent copy of the url |
port | Return the port |
port_number | Return the port |
query | Return the query |
remove_authority | Remove the authority |
remove_fragment | Remove the fragment |
remove_origin | Remove the origin component |
remove_password | Remove the password |
remove_port | Remove the port |
remove_query | Remove the query |
remove_scheme | Remove the scheme |
remove_userinfo | Remove the userinfo |
reserve | Adjust the capacity without changing the size |
resolve | Resolve a URL reference against this base URL |
scheme | Return the scheme |
scheme_id | Return the scheme |
segments | Return the path as a container of segments |
set_encoded_authority | Set the authority |
set_encoded_fragment | Set the fragment. |
set_encoded_host | Set the host |
set_encoded_host_address | Set the host to an address |
set_encoded_host_name | Set the host to a name |
set_encoded_params | Set the query params |
set_encoded_password | Set the password. |
set_encoded_path | Set the path. |
set_encoded_query | Set the query |
set_encoded_user | Set the user |
set_encoded_userinfo | Set the userinfo. |
set_encoded_zone_id | Set the zone ID for an IPv6 address (percent-encoded). |
set_fragment | Set the fragment. |
set_host | Set the host |
set_host_address | Set the host to an address |
set_host_ipv4 | Set the host to an address |
set_host_ipv6 | Set the host to an address |
set_host_ipvfuture | Set the host to an address |
set_host_name | Set the host to a name |
set_params | Set the query params |
set_password | Set the password. |
set_path | Set the path. |
set_path_absolute | Set if the path is absolute |
set_port | Set the port |
set_port_number | Set the port |
set_query | Set the query |
set_scheme | Set the scheme |
set_scheme_id | Set the scheme |
set_user | Set the user |
set_userinfo | Set the userinfo |
set_zone_id | Set the zone ID for an IPv6 address. |
size | Return the number of characters in the url |
user | Return the user |
userinfo | Return the userinfo |
zone_id | Return the IPv6 Zone ID |
operator core::string_view | Return the URL as a core::string_view |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
digest | Calculate a hash of the url |
| Name | Description |
|---|---|
hash |
| Name | Description |
|---|---|
format_to | Format arguments into a URL |
format_to | Format arguments into a URL |
operator!= | Return the result of comparing two URLs |
operator< | Return the result of comparing two URLs |
operator<= | Return the result of comparing two URLs |
operator== | Return the result of comparing two URLs |
operator> | Return the result of comparing two URLs |
operator>= | Return the result of comparing two URLs |
resolve | Resolve a URL reference against a base URL |
This container owns a url, represented by an inline, null-terminated character buffer with fixed capacity. The contents may be inspected and modified, and the implementation maintains a useful invariant: changes to the url always leave it in a valid state.
static_url< 1024 > u( "https://www.example.com" );
this->capacity() == Capacity + 1
| Name | Description |
|---|---|
| Capacity | The maximum capacity in characters, not including the null terminator. |
Constructor
<boost/url/static_url.hpp>Constructor
static_url() noexcept;
» more...
Constructor
static_url(static_url const& u) noexcept;
» more...
Constructor
explicit
static_url(core::string_view s);
» more...
Constructor
static_url(url_view_base const& u);
» more...
| Name | Thrown on |
|---|---|
system_error |
The input does not contain a valid url. |
| Name | Description |
|---|---|
| u | The url to copy. |
| s | The string to parse. |
Constructor
Default constructed urls contain a zero-length string. This matches the grammar for a relative-ref with an empty path and no query or fragment.
static_url< 1024 > u;
this->empty() == true
Constant.
Throws nothing.
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
Constructor
The newly constructed object contains a copy of u.
this->buffer() == u.buffer() && this->buffer.data() != u.buffer().data()
Linear in u.size().
Throws nothing.
| Name | Description |
|---|---|
| u | The url to copy. |
Constructor
This function constructs a url from the string s, which must contain a valid URI or relative-ref or else an exception is thrown. The new url retains ownership by making a copy of the passed string.
static_url< 1024 > u( "https://www.example.com" );
return static_url( parse_uri_reference( s ).value() );
this->buffer().data() != s.data()
Linear in s.size().
Exceptions thrown on invalid input.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
| Name | Thrown on |
|---|---|
system_error |
The input does not contain a valid url. |
| Name | Description |
|---|---|
| s | The string to parse. |
Constructor
The newly constructed object contains a copy of u.
this->buffer() == u.buffer() && this->buffer.data() != u.buffer().data()
Linear in u.size().
Exception thrown if capacity exceeded.
| Name | Thrown on |
|---|---|
system_error |
Capacity would be exceeded. |
| Name | Description |
|---|---|
| u | The url to copy. |
Destructor
Any params, segments, iterators, or views which reference this object are invalidated. The underlying character buffer is destroyed, invalidating all references to it.
Assignment
<boost/url/static_url.hpp>Assignment
static_url&
operator=(static_url const& u) noexcept;
» more...
Assignment
static_url&
operator=(url_view_base const& u);
» more...
| Name | Thrown on |
|---|---|
system_error |
Capacity would be exceeded. |
| Name | Description |
|---|---|
| u | The url to copy. |
Assignment
<boost/url/static_url.hpp>
static_url&
operator=(static_url const& u) noexcept;
The contents of u are copied and the previous contents of this are discarded. Capacity remains unchanged.
this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()
Linear in u.size().
Throws nothing.
| Name | Description |
|---|---|
| u | The url to copy. |
Assignment
The contents of u are copied and the previous contents of this are discarded.
this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()
Linear in u.size().
Strong guarantee. Exception thrown if capacity exceeded.
| Name | Thrown on |
|---|---|
system_error |
Capacity would be exceeded. |
| Name | Description |
|---|---|
| u | The url to copy. |
Normalize the URL components
Applies Syntax-based normalization to all components of the URL.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL authority
Applies Syntax-based normalization to the URL authority.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL fragment
Applies Syntax-based normalization to the URL fragment.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL path
Applies Syntax-based normalization to the URL path.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded. Redundant path-segments are removed.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL query
Applies Syntax-based normalization to the URL query.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL scheme
Applies Syntax-based normalization to the URL scheme.
The scheme is normalized to lowercase.
Strong guarantee. Calls to allocate may throw.
*this
Remove the authority
This function removes the authority, which includes the userinfo, host, and a port if present.
assert( url( "http://example.com/echo.cgi" ).remove_authority().buffer() == "http:/echo.cgi" );
this->has_authority() == false && this->has_userinfo() == false && this->has_port() == false
Linear in this->size().
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
*this
Remove the fragment
This function removes the fragment. An empty fragment is distinct from having no fragment.
assert( url( "?first=john&last=doe#anchor" ).remove_fragment().buffer() == "?first=john&last=doe" );
this->has_fragment() == false && this->encoded_fragment() == ""
Constant.
Throws nothing.
fragment = *( pchar / "/" / "?" )
*this
remove_fragment, set_encoded_fragment, set_fragment.
Remove the origin component
This function removes the origin, which consists of the scheme and authority.
assert( url( "http://www.example.com/index.htm" ).remove_origin().buffer() == "/index.htm" );
this->scheme_id() == scheme::none && this->has_authority() == false
Linear in this->size().
Throws nothing.
*this
Remove the password
This function removes the password from the userinfo if a password exists. If there is no userinfo or no authority, the call has no effect.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://user:pass@example.com" ).remove_password().authority().buffer() == "user@example.com" );
this->has_password() == false && this->encoded_password().empty() == true
Linear in this->size().
Throws nothing.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
set_encoded_password, set_encoded_user, set_password, set_user.
Remove the port
If a port exists, it is removed. The rest of the authority is unchanged.
assert( url( "http://www.example.com:80" ).remove_port().authority().buffer() == "www.example.com" );
this->has_port() == false && this->port_number() == 0 && this->port() == ""
Linear in this->size().
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
*this
Remove the query
If a query is present, it is removed. An empty query is distinct from having no query.
assert( url( "http://www.example.com?id=42" ).remove_query().buffer() == "http://www.example.com" );
this->has_query() == false && this->params().empty()
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
Remove the scheme
This function removes the scheme if it is present.
assert( url("http://www.example.com/index.htm" ).remove_scheme().buffer() == "//www.example.com/index.htm" );
this->has_scheme() == false && this->scheme_id() == scheme::none
Linear in this->size().
Throws nothing.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
*this
Remove the userinfo
This function removes the userinfo if present, without removing any authority.
assert( url( "http://user@example.com" ).remove_userinfo().has_userinfo() == false );
this->has_userinfo() == false && this->encoded_userinfo().empty == true
Linear in this->size().
Throws nothing.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
Set the authority
<boost/url/static_url.hpp>
static_url&
set_encoded_authority(pct_string_view s);
This function sets the authority to the specified string. The string may contain percent-escapes.
assert( url().set_encoded_authority( "My%20Computer" ).has_authority() );
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
*this
| Name | Description |
|---|---|
| s | The authority string to set. |
Set the fragment.
<boost/url/static_url.hpp>
static_url&
set_encoded_fragment(pct_string_view s);
This function sets the fragment to the specified string, which may contain percent-escapes and which may be empty. An empty fragment is distinct from having no fragment. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url("?first=john&last=doe" ).set_encoded_fragment( "john%2Ddoe" ).fragment() == "john-doe" );
this->has_fragment() == true && this->fragment() == decode_view( s )
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
fragment = *( pchar / "/" / "?" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the host
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string. This string can contain percent escapes, or can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
<boost/url/static_url.hpp>
static_url&
set_encoded_host_address(pct_string_view s);
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string. This string can contain percent escapes, or can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to a name
<boost/url/static_url.hpp>
static_url&
set_encoded_host_name(pct_string_view s);
The host is set to the specified string, which may contain percent-escapes and can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
assert( url( "http://www.example.com/index.htm").set_encoded_host_name( "localhost" ).host_address() == "localhost" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::name
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the password.
<boost/url/static_url.hpp>
static_url&
set_encoded_password(pct_string_view s);
This function sets the password in the userinfo to the string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url("http://user@example.com").set_encoded_password( "pass" ).encoded_userinfo() == "user:pass" );
this->has_password() == true
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. This string may contain any characters, including nulls. |
remove_password, set_encoded_password, set_encoded_user, set_user.
Set the path.
This function sets the path to the string, which may contain percent-escapes and can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
The library may adjust the final result to ensure that no other parts of the url is semantically affected.
url u( "http://www.example.com" );
u.set_encoded_path( "path/to/file.txt" );
assert( u.encoded_path() == "/path/to/file.txt" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the query
This sets the query to the string, which may contain percent-escapes and can be empty. An empty query is distinct from having no query. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_encoded_query( "id=42" ).encoded_query() == "id=42" );
this->has_query() == true && this->query() == decode_view( s );
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the user
This function sets the user part of the userinfo the the string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url().set_encoded_user("john%20doe").userinfo() == "john doe" );
this->has_authority() == true && this->has_userinfo() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
remove_password, set_encoded_password, set_password, set_user.
Set the userinfo.
<boost/url/static_url.hpp>
static_url&
set_encoded_userinfo(pct_string_view s);
The userinfo is set to the given string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The effects on the user and password depend on the presence of a colon (':') in the string:
If an unescaped colon exists, the characters up to the colon become the user and the rest of the characters after the colon become the password. In this case has_password returns true. Otherwise,
If there is no colon, the user is set to the string. The function has_password returns false.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://example.com" ).set_encoded_userinfo( "john%20doe" ).user() == "john doe" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the zone ID for an IPv6 address (percent-encoded).
<boost/url/url_base.hpp>Set the zone ID for an IPv6 address (percent-encoded).
url_base&
set_encoded_zone_id(pct_string_view s);
» more...
Set the zone ID for an IPv6 address (percent-encoded).
static_url&
set_encoded_zone_id(pct_string_view const& s);
» more...
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Set the zone ID for an IPv6 address (percent-encoded).
This function sets the zone ID for the host if the host is an IPv6 address. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_encoded_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Set the zone ID for an IPv6 address (percent-encoded).
<boost/url/static_url.hpp>
static_url&
set_encoded_zone_id(pct_string_view const& s);
This function sets the zone ID for the host if the host is an IPv6 address. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_encoded_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Set the fragment.
This function sets the fragment to the specified string, which may be empty. An empty fragment is distinct from having no fragment. Reserved characters in the string are percent-escaped in the result.
assert( url("?first=john&last=doe" ).set_encoded_fragment( "john doe" ).encoded_fragment() == "john%20doe" );
this->has_fragment() == true && this->fragment() == s
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
fragment = *( pchar / "/" / "?" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the host
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host_address( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in s.size().
Strong guarantee. Calls to allocate may throw.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
<boost/url/static_url.hpp>
static_url&
set_host_ipv4(ipv4_address const& addr);
The host is set to the specified IPv4 address. The host type is host_type::ipv4.
assert( url("http://www.example.com").set_host_ipv4( ipv4_address( "127.0.0.1" ) ).buffer() == "http://127.0.0.1" );
Linear in this->size().
this->has_authority() == true && this->host_ipv4_address() == addr && this->host_type() == host_type::ipv4
Strong guarantee. Calls to allocate may throw.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
*this
| Name | Description |
|---|---|
| addr | The address to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
<boost/url/static_url.hpp>
static_url&
set_host_ipv6(ipv6_address const& addr);
The host is set to the specified IPv6 address. The host type is host_type::ipv6.
assert( url().set_host_ipv6( ipv6_address( "1::6:c0a8:1" ) ).authority().buffer() == "[1::6:c0a8:1]" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::ipv6
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
*this
| Name | Description |
|---|---|
| addr | The address to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipvfuture, set_host_name.
Set the host to an address
<boost/url/static_url.hpp>
static_url&
set_host_ipvfuture(core::string_view s);
The host is set to the specified IPvFuture string. The host type is host_type::ipvfuture.
assert( url().set_host_ipvfuture( "v42.bis" ).buffer() == "//[v42.bis]" );
Linear in this->size() + s.size().
this->has_authority() == true && this->host_ipvfuture) == s && this->host_type() == host_type::ipvfuture
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_name.
Set the host to a name
The host is set to the specified string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
assert( url( "http://www.example.com/index.htm").set_host_name( "localhost" ).host_address() == "localhost" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::name
Strong guarantee. Calls to allocate may throw.
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture.
Set the query params
<boost/url/static_url.hpp>
static_url&
set_params(
std::initializer_list<param_view> ps,
encoding_opts opts = {});
This sets the query params to the list of param_view, which can be empty.
An empty list of params is distinct from having no params.
Reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_params( {"id", "42"} ).query() == "id=42" );
this->has_query() == true
Strong guarantee. Calls to allocate may throw.
Linear.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| ps | The params to set. |
| opts | The options for encoding. |
Set the password.
This function sets the password in the userinfo to the string. Reserved characters in the string are percent-escaped in the result.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url("http://user@example.com").set_password( "pass" ).encoded_userinfo() == "user:pass" );
this->has_password() == true && this->password() == s
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. This string may contain any characters, including nulls. |
remove_password, set_encoded_password, set_encoded_user, set_user.
Set the path.
This function sets the path to the string, which may be empty. Reserved characters in the string are percent-escaped in the result.
The library may adjust the final result to ensure that no other parts of the URL are semantically affected.
This function does not encode '/' chars, which are unreserved for paths but reserved for path segments. If a path segment should include encoded '/'s to differentiate it from path separators, the functions set_encoded_path or segments should be used instead.
url u( "http://www.example.com" );
u.set_path( "path/to/file.txt" );
assert( u.path() == "/path/to/file.txt" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
*this
| Name | Description |
|---|---|
| s | The string to set. |
encoded_segments, segments, set_encoded_path, set_path_absolute.
Set the port
This port is set to the string, which must contain only digits or be empty. An empty port string is distinct from having no port.
assert( url( "http://www.example.com" ).set_port( "8080" ).authority().buffer() == "www.example.com:8080" );
this->has_port() == true && this->port_number() == n && this->port() == std::to_string(n)
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
port = *DIGIT
*this
| Name | Description |
|---|---|
| s | The port string to set. |
remove_port, set_port.
Set the port
The port is set to the specified integer.
assert( url( "http://www.example.com" ).set_port_number( 8080 ).authority().buffer() == "www.example.com:8080" );
this->has_authority() == true && this->has_port() == true && this->port_number() == n
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
*this
| Name | Description |
|---|---|
| n | The port number to set. |
Set the query
This sets the query to the string, which can be empty. An empty query is distinct from having no query. Reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_query( "id=42" ).query() == "id=42" );
this->has_query() == true && this->query() == s
Strong guarantee. Calls to allocate may throw.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the scheme
The scheme is set to the specified string, which must contain a valid scheme without any trailing colon (':'). Note that schemes are case-insensitive, and the canonical form is lowercased.
assert( url( "http://www.example.com" ).set_scheme( "https" ).scheme_id() == scheme::https );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
*this
| Name | Description |
|---|---|
| s | The scheme to set. |
Set the scheme
This function sets the scheme to the specified known urls::scheme id, which may not be scheme::unknown or else an exception is thrown. If the id is scheme::none, this function behaves as if remove_scheme were called.
assert( url( "http://example.com/echo.cgi" ).set_scheme_id( scheme::wss ).buffer() == "wss://example.com/echo.cgi" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
*this
| Name | Description |
|---|---|
| id | The scheme to set. |
Set the user
This function sets the user part of the userinfo to the string. Any special or reserved characters in the string are automatically percent-encoded.
assert( url().set_user("john doe").encoded_userinfo() == "john%20doe" );
this->has_authority() == true && this->has_userinfo() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
remove_password, set_encoded_password, set_encoded_user, set_password.
Set the userinfo
The userinfo is set to the given string, which may contain percent-escapes. Any special or reserved characters in the string are automatically percent-encoded. The effects on the user and password depend on the presence of a colon (':') in the string:
If an unescaped colon exists, the characters up to the colon become the user and the rest of the characters after the colon become the password. In this case has_password returns true. Otherwise,
If there is no colon, the user is set to the string. The function has_password returns false.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://example.com" ).set_userinfo( "user:pass" ).encoded_user() == "user" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the zone ID for an IPv6 address.
This function sets the zone ID for the host if the host is an IPv6 address. Reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Common implementation for all static URLs
| Name | Description |
|---|---|
url_base | Common functionality for containers |
| Name | Description |
|---|---|
authority | Return the authority |
buffer | Return the url string |
c_str | Return the url as a null-terminated string |
capacity | Return the number of characters that can be stored without reallocating |
clear | Clear the contents while preserving the capacity |
compare | Return the result of comparing this with another url |
data | Return a pointer to the url's character buffer |
empty | Return true if the url is empty |
encoded_authority | Return the authority. |
encoded_fragment | Return the fragment |
encoded_host | Return the host |
encoded_host_address | Return the host |
encoded_host_and_port | Return the host and port |
encoded_host_name | Return the host name |
encoded_origin | Return the origin |
encoded_params | Return the query as a container of parameters |
encoded_password | Return the password |
encoded_path | Return the path |
encoded_query | Return the query |
encoded_resource | Return the resource |
encoded_segments | Return the path as a container of segments |
encoded_target | Return the target |
encoded_user | Return the user |
encoded_userinfo | Return the userinfo |
encoded_zone_id | Return the IPv6 Zone ID |
fragment | Return the fragment |
has_authority | Return true if an authority is present |
has_fragment | Return true if a fragment is present |
has_password | Return true if a password is present |
has_port | Return true if a port is present |
has_query | Return true if a query is present |
has_scheme | Return true a scheme is present |
has_userinfo | Return true if a userinfo is present |
host | Return the host |
host_address | Return the host |
host_ipv4_address | Return the host IPv4 address |
host_ipv6_address | Return the host IPv6 address |
host_ipvfuture | Return the host IPvFuture address |
host_name | Return the host name |
host_type | Return the host type |
is_path_absolute | Return true if the path is absolute |
normalize | Normalize the URL components |
normalize_authority | Normalize the URL authority |
normalize_fragment | Normalize the URL fragment |
normalize_path | Normalize the URL path |
normalize_query | Normalize the URL query |
normalize_scheme | Normalize the URL scheme |
params | Return the query as a container of parameters |
password | Return the password |
path | Return the path |
persist | Return a shared, persistent copy of the url |
port | Return the port |
port_number | Return the port |
query | Return the query |
remove_authority | Remove the authority |
remove_fragment | Remove the fragment |
remove_origin | Remove the origin component |
remove_password | Remove the password |
remove_port | Remove the port |
remove_query | Remove the query |
remove_scheme | Remove the scheme |
remove_userinfo | Remove the userinfo |
reserve | Adjust the capacity without changing the size |
resolve | Resolve a URL reference against this base URL |
scheme | Return the scheme |
scheme_id | Return the scheme |
segments | Return the path as a container of segments |
set_encoded_authority | Set the authority |
set_encoded_fragment | Set the fragment. |
set_encoded_host | Set the host |
set_encoded_host_address | Set the host to an address |
set_encoded_host_name | Set the host to a name |
set_encoded_params | Set the query params |
set_encoded_password | Set the password. |
set_encoded_path | Set the path. |
set_encoded_query | Set the query |
set_encoded_user | Set the user |
set_encoded_userinfo | Set the userinfo. |
set_encoded_zone_id | Set the zone ID for an IPv6 address (percent-encoded). |
set_fragment | Set the fragment. |
set_host | Set the host |
set_host_address | Set the host to an address |
set_host_ipv4 | Set the host to an address |
set_host_ipv6 | Set the host to an address |
set_host_ipvfuture | Set the host to an address |
set_host_name | Set the host to a name |
set_params | Set the query params |
set_password | Set the password. |
set_path | Set the path. |
set_path_absolute | Set if the path is absolute |
set_port | Set the port |
set_port_number | Set the port |
set_query | Set the query |
set_scheme | Set the scheme |
set_scheme_id | Set the scheme |
set_user | Set the user |
set_userinfo | Set the userinfo |
set_zone_id | Set the zone ID for an IPv6 address. |
size | Return the number of characters in the url |
user | Return the user |
userinfo | Return the userinfo |
zone_id | Return the IPv6 Zone ID |
operator core::string_view | Return the URL as a core::string_view |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
digest | Calculate a hash of the url |
| Name | Description |
|---|---|
static_url |
A modifiable container for a URL. |
| Name | Description |
|---|---|
format_to | Format arguments into a URL |
format_to | Format arguments into a URL |
operator!= | Return the result of comparing two URLs |
operator< | Return the result of comparing two URLs |
operator<= | Return the result of comparing two URLs |
operator== | Return the result of comparing two URLs |
operator> | Return the result of comparing two URLs |
operator>= | Return the result of comparing two URLs |
resolve | Resolve a URL reference against a base URL |
| Name | Description |
|---|---|
static_url
| A modifiable container for a URL. |
This base class is used by the library to provide common functionality for static URLs. Users should not use this class directly. Instead, construct an instance of one of the containers or call a parsing function.
url
url_view
static_url
parse_absolute_uri
parse_origin_form
parse_relative_ref
parse_uri
parse_uri_reference
A modifiable container for a URL.
| Name | Description |
|---|---|
url_base | Common functionality for containers |
| Name | Description |
|---|---|
url [constructor] | Constructor |
~url [destructor] [virtual] | Destructor |
operator= | Assignment |
authority | Return the authority |
buffer | Return the url string |
c_str | Return the url as a null-terminated string |
capacity | Return the number of characters that can be stored without reallocating |
clear | Clear the contents while preserving the capacity |
compare | Return the result of comparing this with another url |
data | Return a pointer to the url's character buffer |
empty | Return true if the url is empty |
encoded_authority | Return the authority. |
encoded_fragment | Return the fragment |
encoded_host | Return the host |
encoded_host_address | Return the host |
encoded_host_and_port | Return the host and port |
encoded_host_name | Return the host name |
encoded_origin | Return the origin |
encoded_params | Return the query as a container of parameters |
encoded_password | Return the password |
encoded_path | Return the path |
encoded_query | Return the query |
encoded_resource | Return the resource |
encoded_segments | Return the path as a container of segments |
encoded_target | Return the target |
encoded_user | Return the user |
encoded_userinfo | Return the userinfo |
encoded_zone_id | Return the IPv6 Zone ID |
fragment | Return the fragment |
has_authority | Return true if an authority is present |
has_fragment | Return true if a fragment is present |
has_password | Return true if a password is present |
has_port | Return true if a port is present |
has_query | Return true if a query is present |
has_scheme | Return true a scheme is present |
has_userinfo | Return true if a userinfo is present |
host | Return the host |
host_address | Return the host |
host_ipv4_address | Return the host IPv4 address |
host_ipv6_address | Return the host IPv6 address |
host_ipvfuture | Return the host IPvFuture address |
host_name | Return the host name |
host_type | Return the host type |
is_path_absolute | Return true if the path is absolute |
normalize | Normalize the URL components |
normalize_authority | Normalize the URL authority |
normalize_fragment | Normalize the URL fragment |
normalize_path | Normalize the URL path |
normalize_query | Normalize the URL query |
normalize_scheme | Normalize the URL scheme |
params | Return the query as a container of parameters |
password | Return the password |
path | Return the path |
persist | Return a shared, persistent copy of the url |
port | Return the port |
port_number | Return the port |
query | Return the query |
remove_authority | Remove the authority |
remove_fragment | Remove the fragment |
remove_origin | Remove the origin component |
remove_password | Remove the password |
remove_port | Remove the port |
remove_query | Remove the query |
remove_scheme | Remove the scheme |
remove_userinfo | Remove the userinfo |
reserve | Adjust the capacity without changing the size |
resolve | Resolve a URL reference against this base URL |
scheme | Return the scheme |
scheme_id | Return the scheme |
segments | Return the path as a container of segments |
set_encoded_authority | Set the authority |
set_encoded_fragment | Set the fragment. |
set_encoded_host | Set the host |
set_encoded_host_address | Set the host to an address |
set_encoded_host_name | Set the host to a name |
set_encoded_params | Set the query params |
set_encoded_password | Set the password. |
set_encoded_path | Set the path. |
set_encoded_query | Set the query |
set_encoded_user | Set the user |
set_encoded_userinfo | Set the userinfo. |
set_encoded_zone_id | Set the zone ID for an IPv6 address (percent-encoded). |
set_fragment | Set the fragment. |
set_host | Set the host |
set_host_address | Set the host to an address |
set_host_ipv4 | Set the host to an address |
set_host_ipv6 | Set the host to an address |
set_host_ipvfuture | Set the host to an address |
set_host_name | Set the host to a name |
set_params | Set the query params |
set_password | Set the password. |
set_path | Set the path. |
set_path_absolute | Set if the path is absolute |
set_port | Set the port |
set_port_number | Set the port |
set_query | Set the query |
set_scheme | Set the scheme |
set_scheme_id | Set the scheme |
set_user | Set the user |
set_userinfo | Set the userinfo |
set_zone_id | Set the zone ID for an IPv6 address. |
size | Return the number of characters in the url |
swap | Swap the contents. |
user | Return the user |
userinfo | Return the userinfo |
zone_id | Return the IPv6 Zone ID |
operator core::string_view | Return the URL as a core::string_view |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
digest | Calculate a hash of the url |
| Name | Description |
|---|---|
swap |
Swap |
std::hash<url> |
| Name | Description |
|---|---|
format | Format arguments into a URL |
format | Format arguments into a URL |
format_to | Format arguments into a URL |
format_to | Format arguments into a URL |
operator!= | Return the result of comparing two URLs |
operator< | Return the result of comparing two URLs |
operator<= | Return the result of comparing two URLs |
operator== | Return the result of comparing two URLs |
operator> | Return the result of comparing two URLs |
operator>= | Return the result of comparing two URLs |
resolve | Resolve a URL reference against a base URL |
This container owns a url, represented by a null-terminated character buffer which is managed by performing dymamic memory allocations as needed. The contents may be inspected and modified, and the implementation maintains a useful invariant: changes to the url always leave it in a valid state.
Functions marked `noexcept` provide the no-throw guarantee, otherwise:
Functions which throw offer the strong exception safety guarantee.
URI-reference = URI / relative-ref
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
absolute-URI = scheme ":" hier-part [ "?" query ]
parse_absolute_uri, parse_relative_ref, parse_uri, parse_uri_reference, resolve.
Constructor
<boost/url/url.hpp>Constructor
url() noexcept;
» more...
Constructor
url(url const& u);
» more...
Constructor
url(url&& u) noexcept;
» more...
Constructor
explicit
url(core::string_view s);
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Constructor
url(url_view_base const& u);
» more...
| Name | Thrown on |
|---|---|
std::length_error |
u.size() > max_size(). |
system_error |
The input does not contain a valid url. |
| Name | Description |
|---|---|
| u | The url to copy. |
| s | The string to parse. |
Constructor
Default constructed urls contain a zero-length string. This matches the grammar for a relative-ref with an empty path and no query or fragment.
url u;
this->empty() == true
Constant.
Throws nothing.
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
Constructor
The newly constructed object contains a copy of u.
this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()
Linear in u.size().
Strong guarantee. Calls to allocate may throw.
| Name | Thrown on |
|---|---|
std::length_error |
u.size() > max_size(). |
| Name | Description |
|---|---|
| u | The url to copy. |
Constructor
The contents of u are transferred to the newly constructed object, which includes the underlying character buffer. After construction, the moved-from object is as if default constructed.
u.empty() == true
Constant.
Throws nothing.
| Name | Description |
|---|---|
| u | The url to move from. |
Constructor
This function constructs a URL from the string s, which must contain a valid URI or relative-ref or else an exception is thrown. The new url retains ownership by allocating a copy of the passed string.
url u( "https://www.example.com" );
return url( parse_uri_reference( s ).value() );
this->buffer().data() != s.data()
Linear in s.size().
Calls to allocate may throw. Exceptions thrown on invalid input.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
| Name | Thrown on |
|---|---|
system_error |
The input does not contain a valid url. |
| Name | Description |
|---|---|
| s | The string to parse. |
Constructor
The newly constructed object contains a copy of u.
this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()
Linear in u.size().
Strong guarantee. Calls to allocate may throw.
| Name | Thrown on |
|---|---|
std::length_error |
u.size() > max_size(). |
| Name | Description |
|---|---|
| u | The url to copy. |
Destructor
Any params, segments, iterators, or views which reference this object are invalidated. The underlying character buffer is destroyed, invalidating all references to it.
Assignment
<boost/url/url.hpp>Assignment
url&
operator=(url const& u);
» more...
Assignment
url&
operator=(url&& u) noexcept;
» more...
Assignment
url&
operator=(url_view_base const& u);
» more...
| Name | Thrown on |
|---|---|
std::length_error |
u.size() > max_size(). |
| Name | Description |
|---|---|
| u | The url to copy. |
Assignment
The contents of u are copied and the previous contents of this are destroyed. Capacity is preserved, or increases.
this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()
Linear in u.size().
Strong guarantee. Calls to allocate may throw.
| Name | Description |
|---|---|
| u | The url to copy. |
Assignment
The contents of u are transferred to this, including the underlying character buffer. The previous contents of this are destroyed. After assignment, the moved-from object is as if default constructed.
u.empty() == true
Constant.
Throws nothing.
| Name | Description |
|---|---|
| u | The url to assign from. |
Assignment
The contents of u are copied and the previous contents of this are destroyed. Capacity is preserved, or increases.
this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()
Linear in u.size().
Strong guarantee. Calls to allocate may throw.
| Name | Thrown on |
|---|---|
std::length_error |
u.size() > max_size(). |
| Name | Description |
|---|---|
| u | The url to copy. |
Normalize the URL components
Applies Syntax-based normalization to all components of the URL.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL authority
Applies Syntax-based normalization to the URL authority.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL fragment
Applies Syntax-based normalization to the URL fragment.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL path
Applies Syntax-based normalization to the URL path.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded. Redundant path-segments are removed.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL query
Applies Syntax-based normalization to the URL query.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL scheme
Applies Syntax-based normalization to the URL scheme.
The scheme is normalized to lowercase.
Strong guarantee. Calls to allocate may throw.
*this
Remove the authority
This function removes the authority, which includes the userinfo, host, and a port if present.
assert( url( "http://example.com/echo.cgi" ).remove_authority().buffer() == "http:/echo.cgi" );
this->has_authority() == false && this->has_userinfo() == false && this->has_port() == false
Linear in this->size().
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
*this
Remove the fragment
This function removes the fragment. An empty fragment is distinct from having no fragment.
assert( url( "?first=john&last=doe#anchor" ).remove_fragment().buffer() == "?first=john&last=doe" );
this->has_fragment() == false && this->encoded_fragment() == ""
Constant.
Throws nothing.
fragment = *( pchar / "/" / "?" )
*this
Remove the origin component
This function removes the origin, which consists of the scheme and authority.
assert( url( "http://www.example.com/index.htm" ).remove_origin().buffer() == "/index.htm" );
this->scheme_id() == scheme::none && this->has_authority() == false
Linear in this->size().
Throws nothing.
*this
Remove the password
This function removes the password from the userinfo if a password exists. If there is no userinfo or no authority, the call has no effect.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://user:pass@example.com" ).remove_password().authority().buffer() == "user@example.com" );
this->has_password() == false && this->encoded_password().empty() == true
Linear in this->size().
Throws nothing.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
set_encoded_password, set_encoded_user, set_password, set_user.
Remove the port
If a port exists, it is removed. The rest of the authority is unchanged.
assert( url( "http://www.example.com:80" ).remove_port().authority().buffer() == "www.example.com" );
this->has_port() == false && this->port_number() == 0 && this->port() == ""
Linear in this->size().
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
*this
Remove the query
If a query is present, it is removed. An empty query is distinct from having no query.
assert( url( "http://www.example.com?id=42" ).remove_query().buffer() == "http://www.example.com" );
this->has_query() == false && this->params().empty()
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
Remove the scheme
This function removes the scheme if it is present.
assert( url("http://www.example.com/index.htm" ).remove_scheme().buffer() == "//www.example.com/index.htm" );
this->has_scheme() == false && this->scheme_id() == scheme::none
Linear in this->size().
Throws nothing.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
*this
Remove the userinfo
This function removes the userinfo if present, without removing any authority.
assert( url( "http://user@example.com" ).remove_userinfo().has_userinfo() == false );
this->has_userinfo() == false && this->encoded_userinfo().empty == true
Linear in this->size().
Throws nothing.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
Set the authority
This function sets the authority to the specified string. The string may contain percent-escapes.
assert( url().set_encoded_authority( "My%20Computer" ).has_authority() );
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
*this
| Name | Description |
|---|---|
| s | The authority string to set. |
Set the fragment.
This function sets the fragment to the specified string, which may contain percent-escapes and which may be empty. An empty fragment is distinct from having no fragment. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url("?first=john&last=doe" ).set_encoded_fragment( "john%2Ddoe" ).fragment() == "john-doe" );
this->has_fragment() == true && this->fragment() == decode_view( s )
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
fragment = *( pchar / "/" / "?" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the host
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string. This string can contain percent escapes, or can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string. This string can contain percent escapes, or can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to a name
The host is set to the specified string, which may contain percent-escapes and can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
assert( url( "http://www.example.com/index.htm").set_encoded_host_name( "localhost" ).host_address() == "localhost" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::name
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the query params
<boost/url/url.hpp>
url&
set_encoded_params(std::initializer_list<param_pct_view> ps);
This sets the query params to the elements in the list, which may contain percent-escapes and can be empty.
An empty list of params is distinct from having no query.
Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_encoded_params( {"id", "42"} ).encoded_query() == "id=42" );
this->has_query() == true
Linear.
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| ps | The params to set. |
set_params, params, remove_query, set_encoded_query, set_query.
Set the password.
This function sets the password in the userinfo to the string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url("http://user@example.com").set_encoded_password( "pass" ).encoded_userinfo() == "user:pass" );
this->has_password() == true
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. This string may contain any characters, including nulls. |
remove_password, set_encoded_password, set_encoded_user, set_user.
Set the path.
This function sets the path to the string, which may contain percent-escapes and can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
The library may adjust the final result to ensure that no other parts of the url is semantically affected.
url u( "http://www.example.com" );
u.set_encoded_path( "path/to/file.txt" );
assert( u.encoded_path() == "/path/to/file.txt" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the query
This sets the query to the string, which may contain percent-escapes and can be empty. An empty query is distinct from having no query. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_encoded_query( "id=42" ).encoded_query() == "id=42" );
this->has_query() == true && this->query() == decode_view( s );
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the user
This function sets the user part of the userinfo the the string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url().set_encoded_user("john%20doe").userinfo() == "john doe" );
this->has_authority() == true && this->has_userinfo() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
remove_password, set_encoded_password, set_password, set_user.
Set the userinfo.
The userinfo is set to the given string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The effects on the user and password depend on the presence of a colon (':') in the string:
If an unescaped colon exists, the characters up to the colon become the user and the rest of the characters after the colon become the password. In this case has_password returns true. Otherwise,
If there is no colon, the user is set to the string. The function has_password returns false.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://example.com" ).set_encoded_userinfo( "john%20doe" ).user() == "john doe" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the zone ID for an IPv6 address (percent-encoded).
<boost/url/url_base.hpp>Set the zone ID for an IPv6 address (percent-encoded).
url_base&
set_encoded_zone_id(pct_string_view s);
» more...
Set the zone ID for an IPv6 address (percent-encoded).
url&
set_encoded_zone_id(pct_string_view const& s);
» more...
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Set the zone ID for an IPv6 address (percent-encoded).
This function sets the zone ID for the host if the host is an IPv6 address. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_encoded_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Set the zone ID for an IPv6 address (percent-encoded).
This function sets the zone ID for the host if the host is an IPv6 address. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_encoded_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Set the fragment.
This function sets the fragment to the specified string, which may be empty. An empty fragment is distinct from having no fragment. Reserved characters in the string are percent-escaped in the result.
assert( url("?first=john&last=doe" ).set_encoded_fragment( "john doe" ).encoded_fragment() == "john%20doe" );
this->has_fragment() == true && this->fragment() == s
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
fragment = *( pchar / "/" / "?" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the host
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host_address( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in s.size().
Strong guarantee. Calls to allocate may throw.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
The host is set to the specified IPv4 address. The host type is host_type::ipv4.
assert( url("http://www.example.com").set_host_ipv4( ipv4_address( "127.0.0.1" ) ).buffer() == "http://127.0.0.1" );
Linear in this->size().
this->has_authority() == true && this->host_ipv4_address() == addr && this->host_type() == host_type::ipv4
Strong guarantee. Calls to allocate may throw.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
*this
| Name | Description |
|---|---|
| addr | The address to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
The host is set to the specified IPv6 address. The host type is host_type::ipv6.
assert( url().set_host_ipv6( ipv6_address( "1::6:c0a8:1" ) ).authority().buffer() == "[1::6:c0a8:1]" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::ipv6
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
*this
| Name | Description |
|---|---|
| addr | The address to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipvfuture, set_host_name.
Set the host to an address
The host is set to the specified IPvFuture string. The host type is host_type::ipvfuture.
assert( url().set_host_ipvfuture( "v42.bis" ).buffer() == "//[v42.bis]" );
Linear in this->size() + s.size().
this->has_authority() == true && this->host_ipvfuture) == s && this->host_type() == host_type::ipvfuture
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_name.
Set the host to a name
The host is set to the specified string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
assert( url( "http://www.example.com/index.htm").set_host_name( "localhost" ).host_address() == "localhost" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::name
Strong guarantee. Calls to allocate may throw.
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture.
Set the query params
<boost/url/url.hpp>
url&
set_params(
std::initializer_list<param_view> ps,
encoding_opts opts = {});
This sets the query params to the list of param_view, which can be empty.
An empty list of params is distinct from having no params.
Reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_params( {"id", "42"} ).query() == "id=42" );
this->has_query() == true
Strong guarantee. Calls to allocate may throw.
Linear.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| ps | The params to set. |
| opts | The options for encoding. |
Set the password.
This function sets the password in the userinfo to the string. Reserved characters in the string are percent-escaped in the result.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url("http://user@example.com").set_password( "pass" ).encoded_userinfo() == "user:pass" );
this->has_password() == true && this->password() == s
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. This string may contain any characters, including nulls. |
remove_password, set_encoded_password, set_encoded_user, set_user.
Set the path.
This function sets the path to the string, which may be empty. Reserved characters in the string are percent-escaped in the result.
The library may adjust the final result to ensure that no other parts of the URL are semantically affected.
This function does not encode '/' chars, which are unreserved for paths but reserved for path segments. If a path segment should include encoded '/'s to differentiate it from path separators, the functions set_encoded_path or segments should be used instead.
url u( "http://www.example.com" );
u.set_path( "path/to/file.txt" );
assert( u.path() == "/path/to/file.txt" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
*this
| Name | Description |
|---|---|
| s | The string to set. |
encoded_segments, segments, set_encoded_path, set_path_absolute.
Set the port
This port is set to the string, which must contain only digits or be empty. An empty port string is distinct from having no port.
assert( url( "http://www.example.com" ).set_port( "8080" ).authority().buffer() == "www.example.com:8080" );
this->has_port() == true && this->port_number() == n && this->port() == std::to_string(n)
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
port = *DIGIT
*this
| Name | Description |
|---|---|
| s | The port string to set. |
Set the port
The port is set to the specified integer.
assert( url( "http://www.example.com" ).set_port_number( 8080 ).authority().buffer() == "www.example.com:8080" );
this->has_authority() == true && this->has_port() == true && this->port_number() == n
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
*this
| Name | Description |
|---|---|
| n | The port number to set. |
Set the query
This sets the query to the string, which can be empty. An empty query is distinct from having no query. Reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_query( "id=42" ).query() == "id=42" );
this->has_query() == true && this->query() == s
Strong guarantee. Calls to allocate may throw.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the scheme
The scheme is set to the specified string, which must contain a valid scheme without any trailing colon (':'). Note that schemes are case-insensitive, and the canonical form is lowercased.
assert( url( "http://www.example.com" ).set_scheme( "https" ).scheme_id() == scheme::https );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
*this
| Name | Description |
|---|---|
| s | The scheme to set. |
Set the scheme
This function sets the scheme to the specified known urls::scheme id, which may not be scheme::unknown or else an exception is thrown. If the id is scheme::none, this function behaves as if remove_scheme were called.
assert( url( "http://example.com/echo.cgi" ).set_scheme_id( scheme::wss ).buffer() == "wss://example.com/echo.cgi" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
*this
| Name | Description |
|---|---|
| id | The scheme to set. |
Set the user
This function sets the user part of the userinfo to the string. Any special or reserved characters in the string are automatically percent-encoded.
assert( url().set_user("john doe").encoded_userinfo() == "john%20doe" );
this->has_authority() == true && this->has_userinfo() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
remove_password, set_encoded_password, set_encoded_user, set_password.
Set the userinfo
The userinfo is set to the given string, which may contain percent-escapes. Any special or reserved characters in the string are automatically percent-encoded. The effects on the user and password depend on the presence of a colon (':') in the string:
If an unescaped colon exists, the characters up to the colon become the user and the rest of the characters after the colon become the password. In this case has_password returns true. Otherwise,
If there is no colon, the user is set to the string. The function has_password returns false.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://example.com" ).set_userinfo( "user:pass" ).encoded_user() == "user" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the zone ID for an IPv6 address.
This function sets the zone ID for the host if the host is an IPv6 address. Reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Swap the contents.
Exchanges the contents of this url with another url. All views, iterators and references remain valid.
If this == &other, this function call has no effect.
url u1( "https://www.example.com" );
url u2( "https://www.boost.org" );
u1.swap(u2);
assert(u1 == "https://www.boost.org" );
assert(u2 == "https://www.example.com" );
Constant
Throws nothing.
| Name | Description |
|---|---|
| other | The object to swap with |
Common functionality for containers
| Name | Description |
|---|---|
url_view_base | Common functionality for containers |
| Name | Description |
|---|---|
authority | Return the authority |
buffer | Return the url string |
c_str | Return the url as a null-terminated string |
capacity | Return the number of characters that can be stored without reallocating |
clear | Clear the contents while preserving the capacity |
compare | Return the result of comparing this with another url |
data | Return a pointer to the url's character buffer |
empty | Return true if the url is empty |
encoded_authority | Return the authority. |
encoded_fragment | Return the fragment |
encoded_host | Return the host |
encoded_host_address | Return the host |
encoded_host_and_port | Return the host and port |
encoded_host_name | Return the host name |
encoded_origin | Return the origin |
encoded_params | Return the query as a container of parameters |
encoded_password | Return the password |
encoded_path | Return the path |
encoded_query | Return the query |
encoded_resource | Return the resource |
encoded_segments | Return the path as a container of segments |
encoded_target | Return the target |
encoded_user | Return the user |
encoded_userinfo | Return the userinfo |
encoded_zone_id | Return the IPv6 Zone ID |
fragment | Return the fragment |
has_authority | Return true if an authority is present |
has_fragment | Return true if a fragment is present |
has_password | Return true if a password is present |
has_port | Return true if a port is present |
has_query | Return true if a query is present |
has_scheme | Return true a scheme is present |
has_userinfo | Return true if a userinfo is present |
host | Return the host |
host_address | Return the host |
host_ipv4_address | Return the host IPv4 address |
host_ipv6_address | Return the host IPv6 address |
host_ipvfuture | Return the host IPvFuture address |
host_name | Return the host name |
host_type | Return the host type |
is_path_absolute | Return true if the path is absolute |
normalize | Normalize the URL components |
normalize_authority | Normalize the URL authority |
normalize_fragment | Normalize the URL fragment |
normalize_path | Normalize the URL path |
normalize_query | Normalize the URL query |
normalize_scheme | Normalize the URL scheme |
params | Return the query as a container of parameters |
password | Return the password |
path | Return the path |
persist | Return a shared, persistent copy of the url |
port | Return the port |
port_number | Return the port |
query | Return the query |
remove_authority | Remove the authority |
remove_fragment | Remove the fragment |
remove_origin | Remove the origin component |
remove_password | Remove the password |
remove_port | Remove the port |
remove_query | Remove the query |
remove_scheme | Remove the scheme |
remove_userinfo | Remove the userinfo |
reserve | Adjust the capacity without changing the size |
resolve | Resolve a URL reference against this base URL |
scheme | Return the scheme |
scheme_id | Return the scheme |
segments | Return the path as a container of segments |
set_encoded_authority | Set the authority |
set_encoded_fragment | Set the fragment. |
set_encoded_host | Set the host |
set_encoded_host_address | Set the host to an address |
set_encoded_host_name | Set the host to a name |
set_encoded_params | Set the query params |
set_encoded_password | Set the password. |
set_encoded_path | Set the path. |
set_encoded_query | Set the query |
set_encoded_user | Set the user |
set_encoded_userinfo | Set the userinfo. |
set_encoded_zone_id | Set the zone ID for an IPv6 address (percent-encoded). |
set_fragment | Set the fragment. |
set_host | Set the host |
set_host_address | Set the host to an address |
set_host_ipv4 | Set the host to an address |
set_host_ipv6 | Set the host to an address |
set_host_ipvfuture | Set the host to an address |
set_host_name | Set the host to a name |
set_params | Set the query params |
set_password | Set the password. |
set_path | Set the path. |
set_path_absolute | Set if the path is absolute |
set_port | Set the port |
set_port_number | Set the port |
set_query | Set the query |
set_scheme | Set the scheme |
set_scheme_id | Set the scheme |
set_user | Set the user |
set_userinfo | Set the userinfo |
set_zone_id | Set the zone ID for an IPv6 address. |
size | Return the number of characters in the url |
user | Return the user |
userinfo | Return the userinfo |
zone_id | Return the IPv6 Zone ID |
operator core::string_view | Return the URL as a core::string_view |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
digest | Calculate a hash of the url |
| Name | Description |
|---|---|
resolve |
Resolve a URL reference against a base URL |
params_encoded_ref |
A view representing query parameters in a URL |
segments_encoded_ref |
A view representing path segments in a URL |
segments_ref |
A view representing path segments in a URL |
params_ref |
A view representing query parameters in a URL |
static_url_base |
Common implementation for all static URLs |
url |
A modifiable container for a URL. |
| Name | Description |
|---|---|
format_to | Format arguments into a URL |
format_to | Format arguments into a URL |
operator!= | Return the result of comparing two URLs |
operator< | Return the result of comparing two URLs |
operator<= | Return the result of comparing two URLs |
operator== | Return the result of comparing two URLs |
operator> | Return the result of comparing two URLs |
operator>= | Return the result of comparing two URLs |
| Name | Description |
|---|---|
static_url_base
| Common implementation for all static URLs |
url
| A modifiable container for a URL. |
This base class is used by the library to provide common member functions for containers. This cannot be instantiated directly; Instead, use one of the containers or functions:
url
url_view
static_url
parse_absolute_uri
parse_origin_form
parse_relative_ref
parse_uri
parse_uri_reference
Return the url as a null-terminated string
This function returns a pointer to a null terminated string representing the url, which may contain percent escapes.
assert( std::strlen( url( "http://www.example.com" ).c_str() ) == 22 );
Constant.
Throws nothing.
Return the number of characters that can be stored without reallocating
This does not include the null terminator, which is always present.
Constant.
Throws nothing.
*this
Clear the contents while preserving the capacity
this->empty() == true
Constant.
No-throw guarantee.
Return the query as a container of parameters
<boost/url/url_base.hpp>Return the query as a container of parameters
params_encoded_ref
encoded_params() noexcept;
» more...
Return the query as a container of parameters
params_encoded_view
encoded_params() const noexcept;
» more...
*thisReturn the query as a container of parameters
This function returns a bidirectional view of key/value pairs over the query. The returned view references the same underlying character buffer; ownership is not transferred. Strings returned when iterating the range may contain percent escapes. The container is modifiable; changes to the container are reflected in the underlying URL.
params_encoded_ref pv = url( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).encoded_params();
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
Return the query as a container of parameters
This function returns a bidirectional view of key/value pairs over the query. The returned view references the same underlying character buffer; ownership is not transferred. Strings returned when iterating the range may contain percent escapes.
params_encoded_view pv = url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).encoded_params();
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
Return the path as a container of segments
<boost/url/url_base.hpp>Return the path as a container of segments
segments_encoded_ref
encoded_segments() noexcept;
» more...
Return the path as a container of segments
segments_encoded_view
encoded_segments() const noexcept;
» more...
*thisencoded_segments, set_encoded_path, set_path, set_path_absolute.
is_path_absolute, encoded_path, path, segments, segments_encoded_view.
Return the path as a container of segments
This function returns a bidirectional view of segments over the path. The returned view references the same underlying character buffer; ownership is not transferred. Strings returned when iterating the range may contain percent escapes. The container is modifiable; changes to the container are reflected in the underlying URL.
url u( "http://example.com/path/to/file.txt" );
segments_encoded_ref sv = u.encoded_segments();
Constant.
Throws nothing.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
*this
encoded_segments, set_encoded_path, set_path, set_path_absolute.
Return the path as a container of segments
<boost/url/url_base.hpp>
segments_encoded_view
encoded_segments() const noexcept;
This function returns a bidirectional view of strings over the path. The returned view references the same underlying character buffer; ownership is not transferred. Strings returned when iterating the range may contain percent escapes.
segments_encoded_view sv = url_view( "/path/to/file.txt" ).encoded_segments();
Constant.
Throws nothing.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
is_path_absolute, encoded_path, path, segments, segments_encoded_view.
Normalize the URL components
Applies Syntax-based normalization to all components of the URL.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL authority
Applies Syntax-based normalization to the URL authority.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL fragment
Applies Syntax-based normalization to the URL fragment.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL path
Applies Syntax-based normalization to the URL path.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded. Redundant path-segments are removed.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL query
Applies Syntax-based normalization to the URL query.
Percent-encoding triplets are normalized to uppercase letters. Percent-encoded octets that correspond to unreserved characters are decoded.
Strong guarantee. Calls to allocate may throw.
*this
Normalize the URL scheme
Applies Syntax-based normalization to the URL scheme.
The scheme is normalized to lowercase.
Strong guarantee. Calls to allocate may throw.
*this
Return the query as a container of parameters
<boost/url/url_base.hpp>Return the query as a container of parameters
params_ref
params() noexcept;
» more...
Return the query as a container of parameters
params_view
params() const noexcept;
» more...
Return the query as a container of parameters
params_ref
params(encoding_opts opt) noexcept;
» more...
params_view
params(encoding_opts opt) const noexcept;
» more...
*this| Name | Description |
|---|---|
| opt | The options for decoding. If this parameter is omitted, the space_as_plus is used. |
Return the query as a container of parameters
This function returns a bidirectional view of key/value pairs over the query. The returned view references the same underlying character buffer; ownership is not transferred. Any percent-escapes in strings returned when iterating the view are decoded first. The container is modifiable; changes to the container are reflected in the underlying URL.
params_ref pv = url( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).params();
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
Return the query as a container of parameters
Return the query as a container of parameters
This function returns a bidirectional view of key/value pairs over the query. The returned view references the same underlying character buffer; ownership is not transferred. Any percent-escapes in strings returned when iterating the view are decoded first. The container is modifiable; changes to the container are reflected in the underlying URL.
encoding_opts opt;
opt.space_as_plus = true;
params_ref pv = url( "/sql?id=42&name=jane+doe&page+size=20" ).params(opt);
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
| Name | Description |
|---|---|
| opt | The options for decoding. If this parameter is omitted, the space_as_plus is used. |
<boost/url/url_view_base.hpp>
params_view
params(encoding_opts opt) const noexcept;
Remove the authority
This function removes the authority, which includes the userinfo, host, and a port if present.
assert( url( "http://example.com/echo.cgi" ).remove_authority().buffer() == "http:/echo.cgi" );
this->has_authority() == false && this->has_userinfo() == false && this->has_port() == false
Linear in this->size().
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
*this
Remove the fragment
This function removes the fragment. An empty fragment is distinct from having no fragment.
assert( url( "?first=john&last=doe#anchor" ).remove_fragment().buffer() == "?first=john&last=doe" );
this->has_fragment() == false && this->encoded_fragment() == ""
Constant.
Throws nothing.
fragment = *( pchar / "/" / "?" )
*this
remove_fragment, set_encoded_fragment, set_fragment.
Remove the origin component
This function removes the origin, which consists of the scheme and authority.
assert( url( "http://www.example.com/index.htm" ).remove_origin().buffer() == "/index.htm" );
this->scheme_id() == scheme::none && this->has_authority() == false
Linear in this->size().
Throws nothing.
*this
Remove the password
This function removes the password from the userinfo if a password exists. If there is no userinfo or no authority, the call has no effect.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://user:pass@example.com" ).remove_password().authority().buffer() == "user@example.com" );
this->has_password() == false && this->encoded_password().empty() == true
Linear in this->size().
Throws nothing.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
set_encoded_password, set_encoded_user, set_password, set_user.
Remove the port
If a port exists, it is removed. The rest of the authority is unchanged.
assert( url( "http://www.example.com:80" ).remove_port().authority().buffer() == "www.example.com" );
this->has_port() == false && this->port_number() == 0 && this->port() == ""
Linear in this->size().
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
*this
Remove the query
If a query is present, it is removed. An empty query is distinct from having no query.
assert( url( "http://www.example.com?id=42" ).remove_query().buffer() == "http://www.example.com" );
this->has_query() == false && this->params().empty()
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
Remove the scheme
This function removes the scheme if it is present.
assert( url("http://www.example.com/index.htm" ).remove_scheme().buffer() == "//www.example.com/index.htm" );
this->has_scheme() == false && this->scheme_id() == scheme::none
Linear in this->size().
Throws nothing.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
*this
Remove the userinfo
This function removes the userinfo if present, without removing any authority.
assert( url( "http://user@example.com" ).remove_userinfo().has_userinfo() == false );
this->has_userinfo() == false && this->encoded_userinfo().empty == true
Linear in this->size().
Throws nothing.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
Adjust the capacity without changing the size
This function adjusts the capacity of the container in characters, without affecting the current contents. Has no effect if n <= this->capacity().
Strong guarantee. Calls to allocate may throw.
| Name | Thrown on |
|---|---|
bad_alloc |
Allocation failure |
| Name | Description |
|---|---|
| n | The capacity in characters, excluding any null terminator. |
Resolve a URL reference against this base URL
<boost/url/url_base.hpp>
system::result<void>
resolve(url_view_base const& ref);
This function attempts to resolve a URL reference ref against this base URL in a manner similar to that of a web browser resolving an anchor tag.
This URL must satisfy the URI grammar. In other words, it must contain a scheme.
Relative references are only usable when in the context of a base absolute URI. This process of resolving a relative reference within the context of a base URI is defined in detail in rfc3986 (see below).
The resolution process works as if the relative reference is appended to the base URI and the result is normalized.
Given the input base URL, this function resolves the relative reference as if performing the following steps:
Ensure the base URI has at least a scheme
Normalizing the reference path
Merge base and reference paths
Normalize the merged path
This function places the result of the resolution into this URL in place.
If an error occurs, the contents of this URL are unspecified and a boost::system::result with an system::error_code is returned.
Abnormal hrefs where the number of ".." segments exceeds the number of segments in the base path are handled by including the unmatched ".." segments in the result, as described in Errata 4547.
url base1( "/one/two/three" );
base1.resolve("four");
assert( base1.buffer() == "/one/two/four" );
url base2( "http://example.com/" )
base2.resolve("/one");
assert( base2.buffer() == "http://example.com/one" );
url base3( "http://example.com/one" );
base3.resolve("/two");
assert( base3.buffer() == "http://example.com/two" );
url base4( "http://a/b/c/d;p?q" );
base4.resolve("g#s");
assert( base4.buffer() == "http://a/b/c/g#s" );
absolute-URI = scheme ":" hier-part [ "?" query ]
Basic guarantee. Calls to allocate may throw.
boost::system::result upon success, otherwise an error code if !base.has_scheme().
| Name | Description |
|---|---|
| ref | The URL reference to resolve. |
Return the path as a container of segments
<boost/url/url_base.hpp>Return the path as a container of segments
urls::segments_ref
segments() noexcept;
» more...
Return the path as a container of segments
segments_view
segments() const noexcept;
» more...
*thisencoded_segments, set_encoded_path, set_path, set_path_absolute.
is_path_absolute, encoded_path, encoded_segments. path, segments_view.
Return the path as a container of segments
This function returns a bidirectional view of segments over the path. The returned view references the same underlying character buffer; ownership is not transferred. Any percent-escapes in strings returned when iterating the view are decoded first. The container is modifiable; changes to the container are reflected in the underlying URL.
url u( "http://example.com/path/to/file.txt" );
segments sv = u.segments();
Constant.
Throws nothing.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
*this
encoded_segments, set_encoded_path, set_path, set_path_absolute.
Return the path as a container of segments
This function returns a bidirectional view of strings over the path. The returned view references the same underlying character buffer; ownership is not transferred. Any percent-escapes in strings returned when iterating the view are decoded first.
segments_view sv = url_view( "/path/to/file.txt" ).segments();
Constant.
Throws nothing.
path = [ "/" ] segment *( "/" segment )
is_path_absolute, encoded_path, encoded_segments. path, segments_view.
Set the authority
This function sets the authority to the specified string. The string may contain percent-escapes.
assert( url().set_encoded_authority( "My%20Computer" ).has_authority() );
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
| Name | Thrown on |
|---|---|
system_eror |
The string contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The authority string to set. |
Set the fragment.
This function sets the fragment to the specified string, which may contain percent-escapes and which may be empty. An empty fragment is distinct from having no fragment. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url("?first=john&last=doe" ).set_encoded_fragment( "john%2Ddoe" ).fragment() == "john-doe" );
this->has_fragment() == true && this->fragment() == decode_view( s )
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
fragment = *( pchar / "/" / "?" )
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this*this| Name | Description |
|---|---|
| s | The string to set. |
Set the host
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string. This string can contain percent escapes, or can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
<boost/url/url_base.hpp>
url_base&
set_encoded_host_address(pct_string_view s);
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string. This string can contain percent escapes, or can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to a name
The host is set to the specified string, which may contain percent-escapes and can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
assert( url( "http://www.example.com/index.htm").set_encoded_host_name( "localhost" ).host_address() == "localhost" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::name
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the query params
<boost/url/url_base.hpp>
url_base&
set_encoded_params(std::initializer_list<param_pct_view> ps) noexcept;
This sets the query params to the elements in the list, which may contain percent-escapes and can be empty.
An empty list of params is distinct from having no query.
Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_encoded_params( {"id", "42"} ).encoded_query() == "id=42" );
this->has_query() == true
Linear.
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
| Name | Thrown on |
|---|---|
system_error |
some element in ps contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| ps | The params to set. |
set_params, params, remove_query, set_encoded_query, set_query.
Set the password.
This function sets the password in the userinfo to the string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url("http://user@example.com").set_encoded_password( "pass" ).encoded_userinfo() == "user:pass" );
this->has_password() == true
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. This string may contain any characters, including nulls. |
remove_password, set_encoded_password, set_encoded_user, set_user.
Set the path.
This function sets the path to the string, which may contain percent-escapes and can be empty. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
The library may adjust the final result to ensure that no other parts of the url is semantically affected.
url u( "http://www.example.com" );
u.set_encoded_path( "path/to/file.txt" );
assert( u.encoded_path() == "/path/to/file.txt" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the query
This sets the query to the string, which may contain percent-escapes and can be empty. An empty query is distinct from having no query. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_encoded_query( "id=42" ).encoded_query() == "id=42" );
this->has_query() == true && this->query() == decode_view( s );
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the user
This function sets the user part of the userinfo the the string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url().set_encoded_user("john%20doe").userinfo() == "john doe" );
this->has_authority() == true && this->has_userinfo() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this*this| Name | Description |
|---|---|
| s | The string to set. |
remove_password, set_encoded_password, set_password, set_user.
Set the userinfo.
The userinfo is set to the given string, which may contain percent-escapes. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result. The effects on the user and password depend on the presence of a colon (':') in the string:
If an unescaped colon exists, the characters up to the colon become the user and the rest of the characters after the colon become the password. In this case has_password returns true. Otherwise,
If there is no colon, the user is set to the string. The function has_password returns false.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://example.com" ).set_encoded_userinfo( "john%20doe" ).user() == "john doe" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the zone ID for an IPv6 address (percent-encoded).
This function sets the zone ID for the host if the host is an IPv6 address. Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_encoded_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
Set the fragment.
This function sets the fragment to the specified string, which may be empty. An empty fragment is distinct from having no fragment. Reserved characters in the string are percent-escaped in the result.
assert( url("?first=john&last=doe" ).set_encoded_fragment( "john doe" ).encoded_fragment() == "john%20doe" );
this->has_fragment() == true && this->fragment() == s
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
fragment = *( pchar / "/" / "?" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the host
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture address enclosed in square brackets, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
Depending on the contents of the passed string, this function sets the host:
If the string is a valid IPv4 address, then the host is set to the address. The host type is host_type::ipv4.
If the string is a valid IPv6 address, then the host is set to that address. The host type is host_type::ipv6.
If the string is a valid IPvFuture, then the host is set to that address. The host type is host_type::ipvfuture.
Otherwise, the host name is set to the string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
In all cases, when this function returns, the URL contains an authority.
assert( url( "http://www.example.com" ).set_host_address( "127.0.0.1" ).buffer() == "http://127.0.0.1" );
this->has_authority() == true
Linear in s.size().
Strong guarantee. Calls to allocate may throw.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
The host is set to the specified IPv4 address. The host type is host_type::ipv4.
assert( url("http://www.example.com").set_host_ipv4( ipv4_address( "127.0.0.1" ) ).buffer() == "http://127.0.0.1" );
Linear in this->size().
this->has_authority() == true && this->host_ipv4_address() == addr && this->host_type() == host_type::ipv4
Strong guarantee. Calls to allocate may throw.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
*this
| Name | Description |
|---|---|
| addr | The address to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv6, set_host_ipvfuture, set_host_name.
Set the host to an address
The host is set to the specified IPv6 address. The host type is host_type::ipv6.
assert( url().set_host_ipv6( ipv6_address( "1::6:c0a8:1" ) ).authority().buffer() == "[1::6:c0a8:1]" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::ipv6
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
*this
| Name | Description |
|---|---|
| addr | The address to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipvfuture, set_host_name.
Set the host to an address
The host is set to the specified IPvFuture string. The host type is host_type::ipvfuture.
assert( url().set_host_ipvfuture( "v42.bis" ).buffer() == "//[v42.bis]" );
Linear in this->size() + s.size().
this->has_authority() == true && this->host_ipvfuture) == s && this->host_type() == host_type::ipvfuture
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid percent-encoding. |
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_name.
Set the host to a name
The host is set to the specified string, which may be empty. Reserved characters in the string are percent-escaped in the result. The host type is host_type::name.
assert( url( "http://www.example.com/index.htm").set_host_name( "localhost" ).host_address() == "localhost" );
this->has_authority() == true && this->host_ipv6_address() == addr && this->host_type() == host_type::name
Strong guarantee. Calls to allocate may throw.
reg-name = *( unreserved / pct-encoded / "-" / ".")
*this
| Name | Description |
|---|---|
| s | The string to set. |
set_encoded_host, set_encoded_host_address, set_encoded_host_name, set_host, set_host_address, set_host_ipv4, set_host_ipv6, set_host_ipvfuture.
Set the query params
<boost/url/url_base.hpp>
url_base&
set_params(
std::initializer_list<param_view> ps,
encoding_opts opts = {}) noexcept;
This sets the query params to the list of param_view, which can be empty.
An empty list of params is distinct from having no params.
Reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_params( {"id", "42"} ).query() == "id=42" );
this->has_query() == true
Strong guarantee. Calls to allocate may throw.
Linear.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| ps | The params to set. |
| opts | The options for encoding. |
Set the password.
This function sets the password in the userinfo to the string. Reserved characters in the string are percent-escaped in the result.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url("http://user@example.com").set_password( "pass" ).encoded_userinfo() == "user:pass" );
this->has_password() == true && this->password() == s
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. This string may contain any characters, including nulls. |
remove_password, set_encoded_password, set_encoded_user, set_user.
Set the path.
This function sets the path to the string, which may be empty. Reserved characters in the string are percent-escaped in the result.
The library may adjust the final result to ensure that no other parts of the URL are semantically affected.
This function does not encode '/' chars, which are unreserved for paths but reserved for path segments. If a path segment should include encoded '/'s to differentiate it from path separators, the functions set_encoded_path or segments should be used instead.
url u( "http://www.example.com" );
u.set_path( "path/to/file.txt" );
assert( u.path() == "/path/to/file.txt" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
*this
| Name | Description |
|---|---|
| s | The string to set. |
encoded_segments, segments, set_encoded_path, set_path_absolute.
Set if the path is absolute
This function adjusts the path to make it absolute or not, depending on the parameter.
If an authority is present, the path is always absolute. In this case, the function has no effect.
url u( "path/to/file.txt" );
assert( u.set_path_absolute( true ) );
assert( u.buffer() == "/path/to/file.txt" );
this->is_path_absolute() == true && this->encoded_path().front() == '/'
Linear in this->size().
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
| Name | Description |
|---|---|
| absolute | If true, the path is made absolute. |
Set the port
This port is set to the string, which must contain only digits or be empty. An empty port string is distinct from having no port.
assert( url( "http://www.example.com" ).set_port( "8080" ).authority().buffer() == "www.example.com:8080" );
this->has_port() == true && this->port_number() == n && this->port() == std::to_string(n)
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
port = *DIGIT
| Name | Thrown on |
|---|---|
system_error |
s does not contain a valid port. |
*this
| Name | Description |
|---|---|
| s | The port string to set. |
remove_port, set_port.
Set the port
The port is set to the specified integer.
assert( url( "http://www.example.com" ).set_port_number( 8080 ).authority().buffer() == "www.example.com:8080" );
this->has_authority() == true && this->has_port() == true && this->port_number() == n
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
*this
| Name | Description |
|---|---|
| n | The port number to set. |
Set the query
This sets the query to the string, which can be empty. An empty query is distinct from having no query. Reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_query( "id=42" ).query() == "id=42" );
this->has_query() == true && this->query() == s
Strong guarantee. Calls to allocate may throw.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the scheme
The scheme is set to the specified string, which must contain a valid scheme without any trailing colon (':'). Note that schemes are case-insensitive, and the canonical form is lowercased.
assert( url( "http://www.example.com" ).set_scheme( "https" ).scheme_id() == scheme::https );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
| Name | Thrown on |
|---|---|
system_error |
s contains an invalid scheme. |
*this
| Name | Description |
|---|---|
| s | The scheme to set. |
Set the scheme
This function sets the scheme to the specified known urls::scheme id, which may not be scheme::unknown or else an exception is thrown. If the id is scheme::none, this function behaves as if remove_scheme were called.
assert( url( "http://example.com/echo.cgi" ).set_scheme_id( scheme::wss ).buffer() == "wss://example.com/echo.cgi" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
| Name | Thrown on |
|---|---|
system_error |
The scheme is invalid. |
*this
| Name | Description |
|---|---|
| id | The scheme to set. |
Set the user
This function sets the user part of the userinfo to the string. Any special or reserved characters in the string are automatically percent-encoded.
assert( url().set_user("john doe").encoded_userinfo() == "john%20doe" );
this->has_authority() == true && this->has_userinfo() == true
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
remove_password, set_encoded_password, set_encoded_user, set_password.
Set the userinfo
The userinfo is set to the given string, which may contain percent-escapes. Any special or reserved characters in the string are automatically percent-encoded. The effects on the user and password depend on the presence of a colon (':') in the string:
If an unescaped colon exists, the characters up to the colon become the user and the rest of the characters after the colon become the password. In this case has_password returns true. Otherwise,
If there is no colon, the user is set to the string. The function has_password returns false.
The interpretation of the userinfo as individual user and password components is scheme-dependent. Transmitting passwords in URLs is deprecated.
assert( url( "http://example.com" ).set_userinfo( "user:pass" ).encoded_user() == "user" );
Linear in this->size() + s.size().
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
*this
| Name | Description |
|---|---|
| s | The string to set. |
Set the zone ID for an IPv6 address.
This function sets the zone ID for the host if the host is an IPv6 address. Reserved characters in the string are percent-escaped in the result.
assert( u.set_host_ipv6( ipv6_address( "fe80::1" ) ).set_zone_id( "eth0" ).buffer() == "https://[fe80::1%25eth0]" );
Linear in this->size().
Strong guarantee. Calls to allocate may throw.
*this
| Name | Description |
|---|---|
| s | The zone ID to set. |
A non-owning reference to a valid URL
| Name | Description |
|---|---|
url_view_base | Common functionality for containers |
| Name | Description |
|---|---|
url_view [constructor] | Constructor |
~url_view [destructor] | Destructor |
operator= | Assignment |
authority | Return the authority |
buffer | Return the url string |
compare | Return the result of comparing this with another url |
data | Return a pointer to the url's character buffer |
empty | Return true if the url is empty |
encoded_authority | Return the authority. |
encoded_fragment | Return the fragment |
encoded_host | Return the host |
encoded_host_address | Return the host |
encoded_host_and_port | Return the host and port |
encoded_host_name | Return the host name |
encoded_origin | Return the origin |
encoded_params | Return the query as a container of parameters |
encoded_password | Return the password |
encoded_path | Return the path |
encoded_query | Return the query |
encoded_resource | Return the resource |
encoded_segments | Return the path as a container of segments |
encoded_target | Return the target |
encoded_user | Return the user |
encoded_userinfo | Return the userinfo |
encoded_zone_id | Return the IPv6 Zone ID |
fragment | Return the fragment |
has_authority | Return true if an authority is present |
has_fragment | Return true if a fragment is present |
has_password | Return true if a password is present |
has_port | Return true if a port is present |
has_query | Return true if a query is present |
has_scheme | Return true a scheme is present |
has_userinfo | Return true if a userinfo is present |
host | Return the host |
host_address | Return the host |
host_ipv4_address | Return the host IPv4 address |
host_ipv6_address | Return the host IPv6 address |
host_ipvfuture | Return the host IPvFuture address |
host_name | Return the host name |
host_type | Return the host type |
is_path_absolute | Return true if the path is absolute |
params | Return the query as a container of parameters |
password | Return the password |
path | Return the path |
persist | Return a shared, persistent copy of the url |
port | Return the port |
port_number | Return the port |
query | Return the query |
scheme | Return the scheme |
scheme_id | Return the scheme |
segments | Return the path as a container of segments |
size | Return the number of characters in the url |
user | Return the user |
userinfo | Return the userinfo |
zone_id | Return the IPv6 Zone ID |
operator core::string_view | Return the URL as a core::string_view |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
digest | Calculate a hash of the url |
| Name | Description |
|---|---|
params_encoded_base |
Common functionality for containers |
params_base |
Common functionality for query parameter containers |
url_view_base |
Common functionality for containers |
std::hash<url_view> |
| Name | Description |
|---|---|
operator!= | Return the result of comparing two URLs |
operator< | Return the result of comparing two URLs |
operator<= | Return the result of comparing two URLs |
operator== | Return the result of comparing two URLs |
operator> | Return the result of comparing two URLs |
operator>= | Return the result of comparing two URLs |
parse_absolute_uri | Return a reference to a parsed URL string |
parse_origin_form | Return a reference to a parsed URL string |
parse_relative_ref | Return a reference to a parsed URL string |
parse_uri | Return a reference to a parsed URL string |
parse_uri_reference | Return a reference to a parsed URL string |
resolve | Resolve a URL reference against a base URL |
Objects of this type represent valid URL strings constructed from a parsed, external character buffer whose storage is managed by the caller. That is, it acts like a core::string_view in terms of ownership. The caller is responsible for ensuring that the lifetime of the underlying character buffer extends until it is no longer referenced.
Construction from a string parses the input as a URI-reference and throws an exception on error. Upon success, the constructed object points to the passed character buffer; ownership is not transferred.
url_view u( "https://www.example.com/index.htm?text=none#a1" );
Parsing functions like parse_uri_reference return a boost::system::result containing either a valid url_view upon success, otherwise they contain an error. The error can be converted to an exception by the caller if desired:
system::result< url_view > rv = parse_uri_reference( "https://www.example.com/index.htm?text=none#a1" );
URI-reference = URI / relative-ref
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
Constructor
<boost/url/url_view.hpp>Constructor
url_view() noexcept;
» more...
Constructor
url_view(url_view const& other) noexcept;
» more...
Constructor
url_view(core::string_view s);
» more...
Constructor
url_view(url_view_base const& other) noexcept;
» more...
Constructor
template<class String>
requires std::is_convertible<
String,
core::string_view
>::value &&
!std::is_convertible<
String*,
url_view_base*
>::value
url_view(String const& s);
» more...
| Name | Thrown on |
|---|---|
system_error |
The input failed to parse correctly. |
| Name | Description |
|---|---|
| other | The other view. |
| s | The string to parse. |
Constructor
Default constructed views refer to a string with zero length, which always remains valid. This matches the grammar for a relative-ref with an empty path and no query or fragment.
url_view u;
this->empty() == true
Constant.
Throws nothing.
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
Constructor
After construction, both views reference the same underlying character buffer. Ownership is not transferred.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Constructor
This function constructs a URL from the string s, which must contain a valid URI or relative-ref or else an exception is thrown. Upon successful construction, the view refers to the characters in the buffer pointed to by s. Ownership is not transferred; The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
url_view u( "http://www.example.com/index.htm" );
return parse_uri_reference( s ).value();
Linear in s.size().
Exceptions thrown on invalid input.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
| Name | Thrown on |
|---|---|
system_error |
The input failed to parse correctly. |
| Name | Description |
|---|---|
| s | The string to parse. |
Constructor
After construction, both views reference the same underlying character buffer. Ownership is not transferred.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Constructor
<boost/url/url_view.hpp>
template<class String>
requires std::is_convertible<
String,
core::string_view
>::value &&
!std::is_convertible<
String*,
url_view_base*
>::value
url_view(String const& s);
This function constructs a URL from the string s, which must contain a valid URI or relative-ref or else an exception is thrown. Upon successful construction, the view refers to the characters in the buffer pointed to by s. Ownership is not transferred; The caller is responsible for ensuring that the lifetime of the buffer extends until it is no longer referenced.
url_view u( "http://www.example.com/index.htm" );
return parse_uri_reference( s ).value();
Linear in s.size().
Exceptions thrown on invalid input.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
| Name | Description |
|---|---|
| s | The string to parse. |
Destructor
Any params, segments, iterators, or other views which reference the same underlying character buffer remain valid.
Assignment
<boost/url/url_view.hpp>Assignment
url_view&
operator=(url_view const& other) noexcept;
» more...
Assignment
url_view&
operator=(url_view_base const& other) noexcept;
» more...
| Name | Description |
|---|---|
| other | The other view. |
Assignment
After assignment, both views reference the same underlying character buffer. Ownership is not transferred.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Assignment
<boost/url/url_view.hpp>
url_view&
operator=(url_view_base const& other) noexcept;
After assignment, both views reference the same underlying character buffer. Ownership is not transferred.
this->buffer().data() == other.buffer().data()
Constant.
Throws nothing.
| Name | Description |
|---|---|
| other | The other view. |
Return the maximum number of characters possible
This represents the largest number of characters that are possible in a url, not including any null terminator.
Constant.
Throws nothing.
Common functionality for containers
| Name | Description |
|---|---|
authority | Return the authority |
buffer | Return the url string |
compare | Return the result of comparing this with another url |
data | Return a pointer to the url's character buffer |
empty | Return true if the url is empty |
encoded_authority | Return the authority. |
encoded_fragment | Return the fragment |
encoded_host | Return the host |
encoded_host_address | Return the host |
encoded_host_and_port | Return the host and port |
encoded_host_name | Return the host name |
encoded_origin | Return the origin |
encoded_params | Return the query as a container of parameters |
encoded_password | Return the password |
encoded_path | Return the path |
encoded_query | Return the query |
encoded_resource | Return the resource |
encoded_segments | Return the path as a container of segments |
encoded_target | Return the target |
encoded_user | Return the user |
encoded_userinfo | Return the userinfo |
encoded_zone_id | Return the IPv6 Zone ID |
fragment | Return the fragment |
has_authority | Return true if an authority is present |
has_fragment | Return true if a fragment is present |
has_password | Return true if a password is present |
has_port | Return true if a port is present |
has_query | Return true if a query is present |
has_scheme | Return true a scheme is present |
has_userinfo | Return true if a userinfo is present |
host | Return the host |
host_address | Return the host |
host_ipv4_address | Return the host IPv4 address |
host_ipv6_address | Return the host IPv6 address |
host_ipvfuture | Return the host IPvFuture address |
host_name | Return the host name |
host_type | Return the host type |
is_path_absolute | Return true if the path is absolute |
params | Return the query as a container of parameters |
password | Return the password |
path | Return the path |
persist | Return a shared, persistent copy of the url |
port | Return the port |
port_number | Return the port |
query | Return the query |
scheme | Return the scheme |
scheme_id | Return the scheme |
segments | Return the path as a container of segments |
size | Return the number of characters in the url |
user | Return the user |
userinfo | Return the userinfo |
zone_id | Return the IPv6 Zone ID |
operator core::string_view | Return the URL as a core::string_view |
| Name | Description |
|---|---|
max_size | Return the maximum number of characters possible |
| Name | Description |
|---|---|
digest | Calculate a hash of the url |
| Name | Description |
|---|---|
operator<< |
Format the url to the output stream |
operator>= |
Return the result of comparing two URLs |
operator> |
Return the result of comparing two URLs |
operator<= |
Return the result of comparing two URLs |
operator< |
Return the result of comparing two URLs |
operator!= |
Return the result of comparing two URLs |
operator== |
Return the result of comparing two URLs |
segments_view |
A view representing path segments in a URL |
segments_ref |
A view representing path segments in a URL |
segments_encoded_view |
A view representing path segments in a URL |
segments_encoded_ref |
A view representing path segments in a URL |
segments_encoded_base |
Common functionality for containers |
segments_base |
Common functionality for containers |
params_view |
A view representing query parameters in a URL |
params_ref |
A view representing query parameters in a URL |
params_encoded_view |
A view representing query parameters in a URL |
params_encoded_ref |
A view representing query parameters in a URL |
params_encoded_base |
Common functionality for containers |
params_base |
Common functionality for query parameter containers |
static_url_base |
Common implementation for all static URLs |
url_view |
A non-owning reference to a valid URL |
url_base |
Common functionality for containers |
url |
A modifiable container for a URL. |
| Name | Description |
|---|---|
resolve | Resolve a URL reference against a base URL |
| Name | Description |
|---|---|
url_base
| Common functionality for containers |
url_view
| A non-owning reference to a valid URL |
This base class is used by the library to provide common member functions for containers. This cannot be instantiated directly; Instead, use one of the containers or functions:
url
url_view
static_url
parse_absolute_uri
parse_origin_form
parse_relative_ref
parse_uri
parse_uri_reference
Return the authority
This function returns the authority as an authority_view.
authority_view a = url_view( "https://www.example.com:8080/index.htm" ).authority();
Constant.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
Return the url string
This function returns the entire url, which may contain percent escapes.
assert( url_view( "http://www.example.com" ).buffer() == "http://www.example.com" );
Constant.
Throws nothing.
Return the result of comparing this with another url
<boost/url/url_view_base.hpp>
int
compare(url_view_base const& other) const noexcept;
This function compares two URLs according to Syntax-Based comparison algorithm.
Linear in min( u0.size(), u1.size() )
Throws nothing.
*this < other, 0 if this == other, and 1 if this > other.
| Name | Description |
|---|---|
| other | The url to compare |
Return a pointer to the url's character buffer
This function returns a pointer to the first character of the url, which is not guaranteed to be null-terminated.
Constant.
Throws nothing.
Return true if the url is empty
The empty string matches the relative-ref grammar.
assert( url_view( "" ).empty() );
Constant.
Throws nothing.
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
relative-part = "//" authority path-abempty
/ path-absolute
/ path-noscheme
/ path-empty
true if the url is empty.
Return the authority.
<boost/url/url_view_base.hpp>
pct_string_view
encoded_authority() const noexcept;
If present, this function returns a string representing the authority (which may be empty). Otherwise it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "file://Network%20Drive/My%2DFiles" ).encoded_authority() == "Network%20Drive" );
Constant.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
Return the fragment
<boost/url/url_view_base.hpp>
pct_string_view
encoded_fragment() const noexcept;
This function returns the fragment as a string with percent-escapes. Ownership is not transferred; the string returned references the underlying character buffer, which must remain valid or else undefined behavior occurs.
assert( url_view( "http://www.example.com/index.htm#a%2D1" ).encoded_fragment() == "a%2D1" );
Constant.
Throws nothing.
fragment = *( pchar / "/" / "?" )
pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
Return the host
This function returns the host portion of the authority as a string, or the empty string if there is no authority. The returned string may contain percent escapes.
assert( url_view( "https://www%2droot.example.com/" ).encoded_host() == "www%2droot.example.com" );
Constant.
Throws nothing.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
Return the host
<boost/url/url_view_base.hpp>
pct_string_view
encoded_host_address() const noexcept;
The value returned by this function depends on the type of host returned from the function host_type.
If the type is host_type::ipv4, then the IPv4 address string is returned.
If the type is host_type::ipv6, then the IPv6 address string is returned, without any enclosing brackets.
If the type is host_type::ipvfuture, then the IPvFuture address string is returned, without any enclosing brackets.
If the type is host_type::name, then the host name string is returned. Any percent-escapes in the string are decoded first.
If the type is host_type::none, then an empty string is returned. The returned string may contain percent escapes.
assert( url_view( "https://www%2droot.example.com/" ).encoded_host_address() == "www%2droot.example.com" );
Constant.
Throws nothing.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
Return the host and port
<boost/url/url_view_base.hpp>
pct_string_view
encoded_host_and_port() const noexcept;
If an authority is present, this function returns the host and optional port as a string, which may be empty. Otherwise it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "http://www.example.com:8080/index.htm" ).encoded_host_and_port() == "www.example.com:8080" );
Constant.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
Return the host name
<boost/url/url_view_base.hpp>
pct_string_view
encoded_host_name() const noexcept;
If the host type is host_type::name, this function returns the name as a string. Otherwise, if the host type is not an name, it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "https://www%2droot.example.com/" ).encoded_host_name() == "www%2droot.example.com" );
Constant.
Throws nothing.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
Return the origin
If an authority is present, this function returns the scheme and authority portion of the url. Otherwise, an empty string is returned. The returned string may contain percent escapes.
assert( url_view( "http://www.example.com:8080/index.htm?text=none#h1" ).encoded_origin() == "http://www.example.com:8080" );
Constant.
Throws nothing.
Return the query as a container of parameters
<boost/url/url_view_base.hpp>
params_encoded_view
encoded_params() const noexcept;
This function returns a bidirectional view of key/value pairs over the query. The returned view references the same underlying character buffer; ownership is not transferred. Strings returned when iterating the range may contain percent escapes.
params_encoded_view pv = url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).encoded_params();
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
Return the password
<boost/url/url_view_base.hpp>
pct_string_view
encoded_password() const noexcept;
This function returns the password portion of the userinfo as a percent-encoded string.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).encoded_password() == "pass" );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
has_password, has_userinfo, encoded_user, encoded_userinfo, password, user, userinfo.
Return the path
This function returns the path as a string. The path may be empty. Any percent-escapes in the string are decoded first.
assert( url_view( "file:///Program%20Files/Games/config.ini" ).encoded_path() == "/Program%20Files/Games/config.ini" );
Constant.
Throws nothing.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
Return the query
If this contains a query, it is returned as a string (which may be empty). Otherwise, an empty string is returned. The returned string may contain percent escapes.
assert( url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).encoded_query() == "id=42&name=jane%2Ddoe&page+size=20" );
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
Return the resource
<boost/url/url_view_base.hpp>
pct_string_view
encoded_resource() const noexcept;
This function returns the resource, which is the portion of the url that includes only the path, query, and fragment. The returned string may contain percent escapes.
assert( url_view( "http://www.example.com/index.html?query#frag" ).encoded_resource() == "/index.html?query#frag" );
Constant.
Throws nothing.
Return the path as a container of segments
<boost/url/url_view_base.hpp>
segments_encoded_view
encoded_segments() const noexcept;
This function returns a bidirectional view of strings over the path. The returned view references the same underlying character buffer; ownership is not transferred. Strings returned when iterating the range may contain percent escapes.
segments_encoded_view sv = url_view( "/path/to/file.txt" ).encoded_segments();
Constant.
Throws nothing.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
is_path_absolute, encoded_path, path, segments, segments_encoded_view.
Return the target
This function returns the target, which is the portion of the url that includes only the path and query. The returned string may contain percent escapes.
assert( url_view( "http://www.example.com/index.html?query#frag" ).encoded_target() == "/index.html?query" );
Constant.
Throws nothing.
Return the user
If present, this function returns a string representing the user (which may be empty). Otherwise it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).encoded_user() == "jane%2Ddoe" );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
has_password, has_userinfo, encoded_password, encoded_userinfo, password, user, userinfo.
Return the userinfo
<boost/url/url_view_base.hpp>
pct_string_view
encoded_userinfo() const noexcept;
If present, this function returns a string representing the userinfo (which may be empty). Otherwise it returns an empty string. The returned string may contain percent escapes.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).encoded_userinfo() == "jane%2Ddoe:pass" );
Constant.
Throws nothing
userinfo = user [ ":" [ password ] ]
authority = [ userinfo "@" ] host [ ":" port ]
has_password, has_userinfo, encoded_password, encoded_user, password, user, userinfo.
Return the IPv6 Zone ID
<boost/url/url_view_base.hpp>
pct_string_view
encoded_zone_id() const noexcept;
If the host type is host_type::ipv6, this function returns the Zone ID as a string. Otherwise an empty string is returned. The returned string may contain percent escapes.
assert( url_view( "http://[fe80::1%25eth0]/" ).encoded_zone_id() == "eth0" );
Constant.
Throws nothing.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPv6addrz / IPvFuture ) "]"
ZoneID = 1*( unreserved / pct-encoded )
IPv6addrz = IPv6address "%25" ZoneID
Return the fragment
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
fragment(StringToken&& token = {}) const;
This function calculates the fragment of the url, with percent escapes decoded and without the leading pound sign ('#') whose presence indicates that the url contains a fragment.
This function accepts an optional StringToken parameter which controls the return type and behavior of the function:
When called with no arguments, the return type of the function is `std::string`. Otherwise
When called with a string token, the behavior and return type of the function depends on the type of string token being passed.
assert( url_view( "http://www.example.com/index.htm#a%2D1" ).fragment() == "a-1" );
Linear in this->fragment().size().
Calls to allocate may throw. String tokens may throw exceptions.
fragment = *( pchar / "/" / "?" )
fragment-part = [ "#" fragment ]
| Name | Description |
|---|---|
| token | An optional string token to use. If this parameter is omitted, the function returns a new std::string. |
Return true if an authority is present
This function returns true if the url contains an authority. The presence of an authority is denoted by a double slash ("//") at the beginning or after the scheme.
assert( url_view( "http://www.example.com/index.htm" ).has_authority() );
Constant.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
absolute-URI = scheme ":" hier-part [ "?" query ]
URI-reference = URI / relative-ref
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
hier-part = "//" authority path-abempty
; (more...)
relative-part = "//" authority path-abempty
; (more...)
true if the url contains an authority.
Return true if a fragment is present
This function returns true if the url contains a fragment. An empty fragment is distinct from no fragment.
assert( url_view( "http://www.example.com/index.htm#anchor" ).has_fragment() );
Constant.
Throws nothing.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
true if the url contains a fragment.
Return true if a password is present
This function returns true if the userinfo is present and contains a password.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).has_password() );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
true if the userinfo contains a password.
has_userinfo, encoded_password, encoded_user, encoded_userinfo, password, user, userinfo.
Return true if a port is present
This function returns true if an authority is present and contains a port.
assert( url_view( "wss://www.example.com:443" ).has_port() );
Constant.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
port = *DIGIT
true if a port is present, false otherwise.
Return true if a query is present
This function returns true if this contains a query. An empty query is distinct from having no query.
assert( url_view( "/sql?id=42&col=name&page-size=20" ).has_query() );
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
true if a query is present.
Return true a scheme is present
This function returns true if this contains a scheme.
assert( url_view( "http://www.example.com" ).has_scheme() );
Constant.
Throws nothing.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
absolute-URI = scheme ":" hier-part [ "?" query ]
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
true if the url contains a scheme.
Return true if a userinfo is present
This function returns true if this contains a userinfo.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).has_userinfo() );
Constant.
Throws nothing.
userinfo = user [ ":" [ password ] ]
authority = [ userinfo "@" ] host [ ":" port ]
true if the userinfo is present.
has_password, encoded_password, encoded_user, encoded_userinfo, password, user, userinfo.
Return the host
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
host(StringToken&& token = {}) const;
This function returns the host portion of the authority as a string, or the empty string if there is no authority. Any percent-escapes in the string are decoded first.
assert( url_view( "https://www%2droot.example.com/" ).host() == "www-root.example.com" );
Linear in this->host().size().
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Description |
|---|---|
| token | A string token customization |
Return the host
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
host_address(StringToken&& token = {}) const;
The value returned by this function depends on the type of host returned from the function host_type.
If the type is host_type::ipv4, then the IPv4 address string is returned.
If the type is host_type::ipv6, then the IPv6 address string is returned, without any enclosing brackets.
If the type is host_type::ipvfuture, then the IPvFuture address string is returned, without any enclosing brackets.
If the type is host_type::name, then the host name string is returned. Any percent-escapes in the string are decoded first.
If the type is host_type::none, then an empty string is returned.
assert( url_view( "https://[1::6:c0a8:1]/" ).host_address() == "1::6:c0a8:1" );
Linear in this->host_address().size().
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Description |
|---|---|
| token | A string token customization |
Return the host IPv4 address
If the host type is host_type::ipv4, this function returns the address as a value of type ipv4_address. Otherwise, if the host type is not an IPv4 address, it returns a default-constructed value which is equal to the unspecified address "0.0.0.0".
assert( url_view( "http://127.0.0.1/index.htm?user=win95" ).host_ipv4_address() == ipv4_address( "127.0.0.1" ) );
Constant.
Throws nothing.
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
ipv4_address.
Return the host IPv6 address
If the host type is host_type::ipv6, this function returns the address as a value of type ipv6_address. Otherwise, if the host type is not an IPv6 address, it returns a default-constructed value which is equal to the unspecified address "0:0:0:0:0:0:0:0".
assert( url_view( "ftp://[::1]/" ).host_ipv6_address() == ipv6_address( "::1" ) );
Constant.
Throws nothing.
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
ipv6_address.
Return the host IPvFuture address
<boost/url/url_view_base.hpp>
core::string_view
host_ipvfuture() const noexcept;
If the host type is host_type::ipvfuture, this function returns the address as a string. Otherwise, if the host type is not an IPvFuture address, it returns an empty string.
assert( url_view( "http://[v1fe.d:9]/index.htm" ).host_ipvfuture() == "v1fe.d:9" );
Constant.
Throws nothing.
IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )
Return the host name
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
host_name(StringToken&& token = {}) const;
If the host type is host_type::name, this function returns the name as a string. Otherwise an empty string is returned. Any percent-escapes in the string are decoded first.
assert( url_view( "https://www%2droot.example.com/" ).host_name() == "www-root.example.com" );
Linear in this->host_name().size().
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture ) "]"
reg-name = *( unreserved / pct-encoded / "-" / ".")
| Name | Description |
|---|---|
| token | A string token customization. |
Return the host type
This function returns one of the following constants representing the type of host present.
host_type::ipv4
host_type::ipv6
host_type::ipvfuture
host_type::name
host_type::none
When has_authority is false, the host type is host_type::none.
assert( url_view( "https://192.168.0.1/local.htm" ).host_type() == host_type::ipv4 );
Constant.
Throws nothing.
Return true if the path is absolute
This function returns true if the path begins with a forward slash ('/').
assert( url_view( "/path/to/file.txt" ).is_path_absolute() );
Constant.
Throws nothing.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
true if the path is absolute, false otherwise.
Return the query as a container of parameters
<boost/url/url_view_base.hpp>Return the query as a container of parameters
params_view
params() const noexcept;
» more...
params_view
params(encoding_opts opt) const noexcept;
» more...
encoded_params, encoded_query, has_query, query.
Return the query as a container of parameters
This function returns a bidirectional view of key/value pairs over the query. The returned view references the same underlying character buffer; ownership is not transferred. Any percent-escapes in strings returned when iterating the view are decoded first.
params_view pv = url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).params();
Constant.
Throws nothing.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
<boost/url/url_view_base.hpp>
params_view
params(encoding_opts opt) const noexcept;
Return the password
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
password(StringToken&& token = {}) const;
If present, this function returns a string representing the password (which may be an empty string). Otherwise it returns an empty string. Any percent-escapes in the string are decoded first.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).password() == "pass" );
Linear in this->password().size().
Calls to allocate may throw.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
| Name | Description |
|---|---|
| token | The string token to use. |
has_password, has_userinfo, encoded_password, encoded_user, encoded_userinfo, user, userinfo.
Return the path
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
path(StringToken&& token = {}) const;
This function returns the path as a string. The path may be empty. Any percent-escapes in the string are decoded first.
assert( url_view( "file:///Program%20Files/Games/config.ini" ).path() == "/Program Files/Games/config.ini" );
Linear in this->path().size().
Calls to allocate may throw.
path = path-abempty ; begins with "/" or is empty
/ path-absolute ; begins with "/" but not "//"
/ path-noscheme ; begins with a non-colon segment
/ path-rootless ; begins with a segment
/ path-empty ; zero characters
path-abempty = *( "/" segment )
path-absolute = "/" [ segment-nz *( "/" segment ) ]
path-noscheme = segment-nz-nc *( "/" segment )
path-rootless = segment-nz *( "/" segment )
path-empty = 0<pchar>
| Name | Description |
|---|---|
| token | A string token to use for the result. |
Return a shared, persistent copy of the url
This function returns a read-only copy of the url, with shared lifetime. The returned value owns (persists) the underlying string. The algorithm used to create the value minimizes the number of individual memory allocations, making it more efficient than when using direct standard library functions.
std::shared_ptr< url_view const > sp;
{
std::string s( "http://example.com" );
url_view u( s ); // u references characters in s
assert( u.data() == s.data() ); // same buffer
sp = u.persist();
assert( sp->data() != s.data() ); // different buffer
assert( sp->buffer() == s); // same contents
// s is destroyed and thus u
// becomes invalid, but sp remains valid.
}
Linear in this->size().
Calls to allocate may throw.
Return the port
If present, this function returns a string representing the port (which may be empty). Otherwise it returns an empty string.
assert( url_view( "http://localhost.com:8080" ).port() == "8080" );
Constant.
Throws nothing.
port = *DIGIT
Return the port
If a port is present and the numerical value is representable, it is returned as an unsigned integer. Otherwise, the number zero is returned.
assert( url_view( "http://localhost.com:8080" ).port_number() == 8080 );
Constant.
Throws nothing.
port = *DIGIT
Return the query
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
query(StringToken&& token = {}) const;
If this contains a query, it is returned as a string (which may be empty). Otherwise, an empty string is returned. Any percent-escapes in the string are decoded first. When plus signs appear in the query portion of the url, they are converted to spaces automatically upon decoding. This behavior can be changed by setting decode options.
assert( url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).query() == "id=42&name=jane-doe&page size=20" );
Linear in this->query().size().
Calls to allocate may throw.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )
| Name | Description |
|---|---|
| token | A token to use for the returned string. |
Return the scheme
This function returns the scheme if it exists, without a trailing colon (':'). Otherwise it returns an empty string. Note that schemes are case-insensitive, and the canonical form is lowercased.
assert( url_view( "http://www.example.com" ).scheme() == "http" );
Throws nothing.
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
absolute-URI = scheme ":" hier-part [ "?" query ]
Return the scheme
This function returns a value which depends on the scheme in the url:
If the scheme is a well-known scheme, corresponding value from the enumeration urls::scheme is returned.
If a scheme is present but is not a well-known scheme, the value returned is urls::scheme::unknown.
Otherwise, if the scheme is absent the value returned is urls::scheme::none.
assert( url_view( "wss://www.example.com/crypto.cgi" ).scheme_id() == scheme::wss );
Constant.
Throws nothing.
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
absolute-URI = scheme ":" hier-part [ "?" query ]
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
Return the path as a container of segments
This function returns a bidirectional view of strings over the path. The returned view references the same underlying character buffer; ownership is not transferred. Any percent-escapes in strings returned when iterating the view are decoded first.
segments_view sv = url_view( "/path/to/file.txt" ).segments();
Constant.
Throws nothing.
path = [ "/" ] segment *( "/" segment )
is_path_absolute, encoded_path, encoded_segments. path, segments_view.
Return the number of characters in the url
This function returns the number of characters in the url's encoded string, not including any null terminator, if present.
assert( url_view( "file:///Program%20Files" ).size() == 23 );
Constant.
Throws nothing.
Return the user
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
user(StringToken&& token = {}) const;
If present, this function returns a string representing the user (which may be empty). Otherwise it returns an empty string. Any percent-escapes in the string are decoded first.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).user() == "jane-doe" );
Linear in this->user().size().
Calls to allocate may throw.
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
| Name | Description |
|---|---|
| token | The string token to use. |
has_password, has_userinfo, encoded_password, encoded_user, encoded_userinfo, password, userinfo.
Return the userinfo
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
userinfo(StringToken&& token = {}) const;
If present, this function returns a string representing the userinfo (which may be empty). Otherwise it returns an empty string. Any percent-escapes in the string are decoded first.
This function uses the string token return type customization. Depending on the token passed, the return type and behavior of the function can be different. See string_token::return_string for more information.
assert( url_view( "http://jane%2Ddoe:pass@example.com" ).userinfo() == "jane-doe:pass" );
Linear in this->userinfo().size().
Calls to allocate may throw.
userinfo = user [ ":" [ password ] ]
authority = [ userinfo "@" ] host [ ":" port ]
std::string is returned. Otherwise, the return type and meaning depends on the string token passed to the function.| Name | Description |
|---|---|
| token | The string token to use. |
has_password, has_userinfo, encoded_password, encoded_user, encoded_userinfo, password, user.
Return the IPv6 Zone ID
<boost/url/url_view_base.hpp>
template<string_token::StringToken StringToken = string_token::return_string>
StringToken::result_type
zone_id(StringToken&& token = {}) const;
If the host type is host_type::ipv6, this function returns the Zone ID as a string. Otherwise an empty string is returned. Any percent-escapes in the string are decoded first.
assert( url_view( "http://[fe80::1%25eth0]/" ).zone_id() == "eth0" );
Linear in this->encoded_zone_id().size().
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPv6addrz / IPvFuture ) "]"
ZoneID = 1*( unreserved / pct-encoded )
IPv6addrz = IPv6address "%25" ZoneID
| Name | Description |
|---|---|
| token | A string token customization. |
Return the URL as a core::string_view
Constant.
Throws nothing.
Return the maximum number of characters possible
<boost/url/url_view_base.hpp>
constexpr
static
std::size_t
max_size() noexcept;
This represents the largest number of characters that are theoretically possible to represent in a url, not including any null terminator. In practice the actual possible size may be lower than this number.
Constant.
Throws nothing.
Calculate a hash of the url
<boost/url/url_view_base.hpp>
std::size_t
digest(std::size_t salt = 0) const noexcept;
This function calculates a hash of the url as if it were always normalized.
Linear in this->size().
Throws nothing.
| Name | Description |
|---|---|
| salt | An initial value to add to the hash |
Error codes returned the library
| Name | Description |
|---|---|
success | The operation completed successfully. |
illegal_null | Null encountered in pct-encoded. |
illegal_reserved_char | Illegal reserved character in encoded string. |
non_canonical | A grammar element was not in canonical form. |
bad_pct_hexdig | Bad hexadecimal digit. |
incomplete_encoding | The percent-encoded sequence is incomplete. |
missing_pct_hexdig | Missing hexadecimal digit. |
no_space | No space in output buffer |
not_a_base | The URL is not a base URL |
Identifies the type of host in a URL.
| Name | Description |
|---|---|
none | No host is specified. |
name | A host is specified by reg-name. |
ipv4 | A host is specified by ipv4_address. |
ipv6 | A host is specified by ipv6_address. |
ipvfuture | A host is specified by IPvFuture. |
Values of this type are returned by URL views and containers to indicate the type of host present in a URL.
Identifies a known URL scheme
| Name | Description |
|---|---|
none | Indicates that no scheme is present |
unknown | Indicates the scheme is not a well-known scheme |
ftp | File Transfer Protocol (FTP) |
file | File URI Scheme |
http | The Hypertext Transfer Protocol URI Scheme |
https | The Secure Hypertext Transfer Protocol URI Scheme |
ws | The WebSocket URI Scheme |
wss | The Secure WebSocket URI Scheme |
| Name | Description |
|---|---|
default_port | Return the default port for a known scheme |
string_to_scheme | Return the known scheme for a non-normalized string, if known |
to_string | Return the normalized string for a known scheme |
Designate a named argument for a replacement field
<boost/url/format.hpp>
template<class T>
named_arg<T>
arg(
core::string_view name,
T const& arg);
Construct a named argument for a format URL string that contains named replacement fields.
The function parameters should be convertible to an implementation defined type able to store the name and a reference to any type potentially used as a format argument.
The function should be used to designate a named argument for a replacement field in a format URL string.
assert(format("user/{id}", arg("id", 1)).buffer() == "user/1");
| Name | Description |
|---|---|
| name | The format argument name |
| arg | The format argument value |
Return the default port for a known scheme
This function returns the default port for the known schemes. If the value does not represent a known scheme or the scheme does not represent a protocol, the function returns zero.
The following ports are returned by the function:
scheme::ftp = 21
scheme::http, scheme::ws = 80
scheme::https, scheme::wss = 443
| Name | Description |
|---|---|
| s | The known scheme constant |
encode overloads
<boost/url/encode.hpp>Return a percent-encoded string
template<
string_token::StringToken StringToken = string_token::return_string,
grammar::CharSet CS>
StringToken::result_type
encode(
core::string_view s,
CS const& allowed,
encoding_opts opt = {},
StringToken&& token = {}) noexcept;
» more...
Apply percent-encoding to a string
template<grammar::CharSet CS>
std::size_t
encode(
char* dest,
std::size_t size,
core::string_view s,
CS const& allowed,
encoding_opts opt = {});
» more...
| Name | Description |
|---|---|
| s | The string to encode. |
| allowed | The set of characters that is not percent-encoded. |
| opt | The options for encoding. If this parameter is omitted, the default options are used. |
| token | A string token. |
| dest | The destination buffer to write to. |
| size | The number of writable characters pointed to by dest. If this is less than encoded_size(s), the result is truncated. |
Return a percent-encoded string
<boost/url/encode.hpp>
template<
string_token::StringToken StringToken = string_token::return_string,
grammar::CharSet CS>
StringToken::result_type
encode(
core::string_view s,
CS const& allowed,
encoding_opts opt = {},
StringToken&& token = {}) noexcept;
This function applies percent-encoding to the string using the given options and character set, and returns the result as a string when called with default arguments.
encoding_opts opt;
opt.space_as_plus = true;
std::string s = encode( "My Stuff", opt, pchars );
assert( s == "My+Stuff" );
Calls to allocate may throw.
| Name | Description |
|---|---|
| s | The string to encode. |
| allowed | The set of characters that is not percent-encoded. |
| opt | The options for encoding. If this parameter is omitted, the default options are used. |
| token | A string token. |
Apply percent-encoding to a string
<boost/url/encode.hpp>
template<grammar::CharSet CS>
std::size_t
encode(
char* dest,
std::size_t size,
core::string_view s,
CS const& allowed,
encoding_opts opt = {});
This function applies percent-encoding to the string using the given options and character set. The destination buffer provided by the caller is used to store the result, which may be truncated if there is insufficient space.
char buf[100];
assert( encode( buf, sizeof(buf), "Program Files", pchars ) == 15 );
Throws nothing.
| Name | Description |
|---|---|
| dest | The destination buffer to write to. |
| size | The number of writable characters pointed to by dest. If this is less than encoded_size(s), the result is truncated. |
| s | The string to encode. |
| allowed | The set of characters that is not percent-encoded. |
| opt | The options for encoding. If this parameter is omitted, the default options are used. |
Return the buffer size needed for percent-encoding
<boost/url/encode.hpp>
template<grammar::CharSet CS>
std::size_t
encoded_size(
core::string_view s,
CS const& allowed,
encoding_opts opt = {}) noexcept;
This function returns the exact number of bytes necessary to store the result of applying percent-encoding to the string using the given options and character set. No encoding is actually performed.
assert( encoded_size( "My Stuff", pchars ) == 10 );
Throws nothing.
| Name | Description |
|---|---|
| s | The string to measure. |
| allowed | The set of characters that is not percent-encoded. |
| opt | The options for encoding. If this parameter is omitted, the default options are be used. |
Format arguments into a URL
<boost/url/format.hpp>Format arguments into a URL
url
format(
core::string_view fmt,
std::initializer_list<format_arg> args);
» more...
Format arguments into a URL
template<std::convertible_to<format_arg>... Args>
url
format(
core::string_view fmt,
Args...&&... args);
» more...
| Name | Thrown on |
|---|---|
system_error |
fmt contains an invalid format string and the result contains an invalid URL after replacements are applied. |
| Name | Description |
|---|---|
| fmt | The format URL string. |
| args | Arguments to be formatted. |
Format arguments into a URL
<boost/url/format.hpp>
url
format(
core::string_view fmt,
std::initializer_list<format_arg> args);
Format arguments according to the format URL string into a url.
This overload allows type-erased arguments to be passed as an initializer_list, which is mostly convenient for named parameters.
All arguments must be convertible to a implementation defined type able to store a type-erased reference to any valid format argument.
The rules for a format URL string are the same as for a std::format_string, where replacement fields are delimited by curly braces.
The URL components to which replacement fields belong are identified before replacement is applied and any invalid characters for that formatted argument are percent-escaped.
Hence, the delimiters between URL components, such as :, //, ?, and #, should be included in the URL format string. Likewise, a format string with a single "{}" is interpreted as a path and any replacement characters invalid in this component will be encoded to form a valid URL.
assert(format("user/{id}", {{"id", 1}}).buffer() == "user/1");
All replacement fields must be valid and the resulting URL should be valid after arguments are formatted into the URL.
Because any invalid characters for a URL component are encoded by this function, only replacements in the scheme and port components might be invalid, as these components do not allow percent-encoding of arbitrary characters.
replacement_field ::= "{" [arg_id] [":" (format_spec | chrono_format_spec)] "}"
arg_id ::= integer | identifier
integer ::= digit+
digit ::= "0"..."9"
identifier ::= id_start id_continue*
id_start ::= "a"..."z" | "A"..."Z" | "_"
id_continue ::= id_start | digit
| Name | Thrown on |
|---|---|
system_error |
fmt contains an invalid format string and the result contains an invalid URL after replacements are applied. |
| Name | Description |
|---|---|
| fmt | The format URL string. |
| args | Arguments to be formatted. |
Format arguments into a URL
<boost/url/format.hpp>
template<std::convertible_to<format_arg>... Args>
url
format(
core::string_view fmt,
Args...&&... args);
Format arguments according to the format URL string into a url.
The rules for a format URL string are the same as for a std::format_string, where replacement fields are delimited by curly braces.
The URL components to which replacement fields belong are identified before replacement is applied and any invalid characters for that formatted argument are percent-escaped.
Hence, the delimiters between URL components, such as :, //, ?, and #, should be included in the URL format string. Likewise, a format string with a single "{}" is interpreted as a path and any replacement characters invalid in this component will be encoded to form a valid URL.
assert(format("{}", "Hello world!").buffer() == "Hello%20world%21");
All replacement fields must be valid and the resulting URL should be valid after arguments are formatted into the URL.
Because any invalid characters for a URL component are encoded by this function, only replacements in the scheme and port components might be invalid, as these components do not allow percent-encoding of arbitrary characters.
replacement_field ::= "{" [arg_id] [":" (format_spec | chrono_format_spec)] "}"
arg_id ::= integer | identifier
integer ::= digit+
digit ::= "0"..."9"
identifier ::= id_start id_continue*
id_start ::= "a"..."z" | "A"..."Z" | "_"
id_continue ::= id_start | digit
| Name | Thrown on |
|---|---|
system_error |
fmt contains an invalid format string and the result contains an invalid URL after replacements are applied. |
| Name | Description |
|---|---|
| fmt | The format URL string. |
| args | Arguments to be formatted. |
Format arguments into a URL
<boost/url/format.hpp>Format arguments into a URL
void
format_to(
url_base& u,
core::string_view fmt,
std::initializer_list<format_arg> args);
» more...
Format arguments into a URL
template<std::convertible_to<format_arg>... Args>
void
format_to(
url_base& u,
core::string_view fmt,
Args...&&... args);
» more...
| Name | Thrown on |
|---|---|
system_error |
fmt contains an invalid format string and u contains an invalid URL after replacements are applied. |
| Name | Description |
|---|---|
| u | An object that derives from url_base. |
| fmt | The format URL string. |
| args | Arguments to be formatted. |
Format arguments into a URL
<boost/url/format.hpp>
void
format_to(
url_base& u,
core::string_view fmt,
std::initializer_list<format_arg> args);
Format arguments according to the format URL string into a url_base.
This overload allows type-erased arguments to be passed as an initializer_list, which is mostly convenient for named parameters.
All arguments must be convertible to a implementation defined type able to store a type-erased reference to any valid format argument.
The rules for a format URL string are the same as for a std::format_string, where replacement fields are delimited by curly braces.
The URL components to which replacement fields belong are identified before replacement is applied and any invalid characters for that formatted argument are percent-escaped.
Hence, the delimiters between URL components, such as :, //, ?, and #, should be included in the URL format string. Likewise, a format string with a single "{}" is interpreted as a path and any replacement characters invalid in this component will be encoded to form a valid URL.
static_url<30> u;
format_to(u, "user/{id}", {{"id", 1}})
assert(u.buffer() == "user/1");
All replacement fields must be valid and the resulting URL should be valid after arguments are formatted into the URL.
Because any invalid characters for a URL component are encoded by this function, only replacements in the scheme and port components might be invalid, as these components do not allow percent-encoding of arbitrary characters.
Strong guarantee.
replacement_field ::= "{" [arg_id] [":" (format_spec | chrono_format_spec)] "}"
arg_id ::= integer | identifier
integer ::= digit+
digit ::= "0"..."9"
identifier ::= id_start id_continue*
id_start ::= "a"..."z" | "A"..."Z" | "_"
id_continue ::= id_start | digit
| Name | Thrown on |
|---|---|
system_error |
fmt contains an invalid format string and u contains an invalid URL after replacements are applied. |
| Name | Description |
|---|---|
| u | An object that derives from url_base. |
| fmt | The format URL string. |
| args | Arguments to be formatted. |
Format arguments into a URL
<boost/url/format.hpp>
template<std::convertible_to<format_arg>... Args>
void
format_to(
url_base& u,
core::string_view fmt,
Args...&&... args);
Format arguments according to the format URL string into a url_base.
The rules for a format URL string are the same as for a std::format_string, where replacement fields are delimited by curly braces.
The URL components to which replacement fields belong are identified before replacement is applied and any invalid characters for that formatted argument are percent-escaped.
Hence, the delimiters between URL components, such as :, //, ?, and #, should be included in the URL format string. Likewise, a format string with a single "{}" is interpreted as a path and any replacement characters invalid in this component will be encoded to form a valid URL.
static_url<30> u;
format(u, "{}", "Hello world!");
assert(u.buffer() == "Hello%20world%21");
All replacement fields must be valid and the resulting URL should be valid after arguments are formatted into the URL.
Because any invalid characters for a URL component are encoded by this function, only replacements in the scheme and port components might be invalid, as these components do not allow percent-encoding of arbitrary characters.
Strong guarantee.
replacement_field ::= "{" [arg_id] [":" (format_spec | chrono_format_spec)] "}"
arg_id ::= integer | identifier
integer ::= digit+
digit ::= "0"..."9"
identifier ::= id_start id_continue*
id_start ::= "a"..."z" | "A"..."Z" | "_"
id_continue ::= id_start | digit
| Name | Thrown on |
|---|---|
system_error |
fmt contains an invalid format string and u contains an invalid URL after replacements are applied. |
| Name | Description |
|---|---|
| u | An object that derives from url_base. |
| fmt | The format URL string. |
| args | Arguments to be formatted. |
Return a valid percent-encoded string
<boost/url/pct_string_view.hpp>
system::result<pct_string_view>
make_pct_string_view(core::string_view s) noexcept;
If s is a valid percent-encoded string, the function returns the buffer as a valid view which may be used to perform decoding or measurements. Otherwise the result contains an error code. Upon success, the returned view references the original character buffer; Ownership is not transferred.
Linear in s.size().
Throws nothing.
| Name | Description |
|---|---|
| s | The string to validate. |
Return a reference to a parsed URL string
<boost/url/parse.hpp>
system::result<url_view>
parse_absolute_uri(core::string_view s);
This function parses a string according to the grammar below and returns a view referencing the passed string upon success, else returns an error. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the character buffer extends until the view is no longer being accessed.
system::result< url_view > rv = parse_absolute_uri( "http://example.com/index.htm?id=1" );
absolute-URI = scheme ":" hier-part [ "?" query ]
hier-part = "//" authority path-abempty
/ path-absolute
/ path-rootless
/ path-empty
| Name | Thrown on |
|---|---|
std::length_error |
s.size() > url_view::max_size |
| Name | Description |
|---|---|
| s | The string to parse |
parse_origin_form, parse_relative_ref, parse_uri, parse_uri_reference, url_view.
Parse an authority
<boost/url/authority_view.hpp>
system::result<authority_view>
parse_authority(core::string_view s) noexcept;
This function parses a string according to the authority grammar below, and returns an authority_view referencing the string. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the string extends until the view is no longer being accessed.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT
Throws nothing.
| Name | Description |
|---|---|
| s | The string to parse |
Return an IPv4 address from an IP address string in dotted decimal form
<boost/url/ipv4_address.hpp>
system::result<ipv4_address>
parse_ipv4_address(core::string_view s) noexcept;
| Name | Description |
|---|---|
| s | The string to parse. |
Parse a string containing an IPv6 address.
<boost/url/ipv6_address.hpp>
system::result<ipv6_address>
parse_ipv6_address(core::string_view s) noexcept;
This function attempts to parse the string as an IPv6 address and returns a result containing the address upon success, or an error code if the string does not contain a valid IPv6 address.
Throws nothing.
| Name | Description |
|---|---|
| s | The string to parse. |
Return a reference to a parsed URL string
<boost/url/parse.hpp>
system::result<url_view>
parse_origin_form(core::string_view s);
This function parses a string according to the grammar below and returns a view referencing the passed string upon success, else returns an error. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the character buffer extends until the view is no longer being accessed.
system::result< url_view > = parse_origin_form( "/index.htm?layout=mobile" );
origin-form = absolute-path [ "?" query ]
absolute-path = 1*( "/" segment )
| Name | Thrown on |
|---|---|
std::length_error |
s.size() > url_view::max_size |
| Name | Description |
|---|---|
| s | The string to parse |
parse_absolute_uri, parse_relative_ref, parse_uri, parse_uri_reference, url_view.
Parse a string and return an encoded segment view
<boost/url/parse_path.hpp>
system::result<segments_encoded_view>
parse_path(core::string_view s) noexcept;
This function parses the string and returns the corresponding path object if the string is valid, otherwise returns an error.
path = [ "/" ] segment *( "/" segment )
No-throw guarantee.
| Name | Description |
|---|---|
| s | The string to parse |
Parse a string and return an encoded params view
<boost/url/parse_query.hpp>
system::result<params_encoded_view>
parse_query(core::string_view s) noexcept;
This function parses the string and returns the corresponding params object if the string is valid, otherwise returns an error.
query = *( pchar / "/" / "?" )
No-throw guarantee.
| Name | Description |
|---|---|
| s | The string to parse |
Return a reference to a parsed URL string
<boost/url/parse.hpp>
system::result<url_view>
parse_relative_ref(core::string_view s);
This function parses a string according to the grammar below and returns a view referencing the passed string upon success, else returns an error. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the character buffer extends until the view is no longer being accessed.
system::result< url_view > = parse_relative_ref( "images/dot.gif?v=hide#a" );
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
relative-part = "//" authority path-abempty
/ path-absolute
/ path-noscheme
/ path-abempty
/ path-empty
| Name | Thrown on |
|---|---|
std::length_error |
s.size() > url_view::max_size |
| Name | Description |
|---|---|
| s | The string to parse |
parse_absolute_uri, parse_origin_form, parse_uri, parse_uri_reference, url_view.
Return a reference to a parsed URL string
This function parses a string according to the grammar below and returns a view referencing the passed string upon success, else returns an error. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the character buffer extends until the view is no longer being accessed.
system::result< url_view > = parse_uri( "https://www.example.com/index.htm?id=guest#s1" );
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
hier-part = "//" authority path-abempty
/ path-absolute
/ path-rootless
/ path-empty
| Name | Thrown on |
|---|---|
std::length_error |
s.size() > url_view::max_size |
boost::system::result containing a value or an error
| Name | Description |
|---|---|
| s | The string to parse |
Return a reference to a parsed URL string
<boost/url/parse.hpp>
system::result<url_view>
parse_uri_reference(core::string_view s);
This function parses a string according to the grammar below and returns a view referencing the passed string upon success, else returns an error. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the character buffer extends until the view is no longer being accessed.
system::result< url_view > = parse_uri_reference( "ws://echo.example.com/?name=boost#demo" );
URI-reference = URI / relative-ref
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
hier-part = "//" authority path-abempty
/ path-absolute
/ path-rootless
/ path-empty
relative-part = "//" authority path-abempty
/ path-absolute
/ path-noscheme
/ path-abempty
/ path-empty
| Name | Thrown on |
|---|---|
std::length_error |
s.size() > url_view::max_size |
| Name | Description |
|---|---|
| s | The string to parse |
parse_absolute_uri, parse_origin_form, parse_relative_ref, parse_uri, url_view.
Rule for a string with percent-encoded escapes
<boost/url/rfc/pct_encoded_rule.hpp>
template<grammar::CharSet CS>
constexpr
/* implementation-defined */
pct_encoded_rule(CS const& cs) noexcept;
This function returns a rule which matches a percent-encoded string, permitting characters in the string which are also in the specified character set to be used unescaped.
using value_type = pct_string_view;
Rules are used with the function grammar::parse.
// pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
system::result< pct_string_view > rv = grammar::parse( "Program%20Files", pct_encoded_rule( pchars ) );
pct-encoded = "%" HEXDIG HEXDIG
| Name | Description |
|---|---|
| cs | The character set indicating which characters are allowed without escapes. Any character which is not in this set must be escaped, or else parsing returns an error. |
Resolve a URL reference against a base URL
<boost/url/url_base.hpp>
system::result<void>
resolve(
url_view_base const& base,
url_view_base const& ref,
url_base& dest);
This function attempts to resolve a URL reference ref against the base URL base in a manner similar to that of a web browser resolving an anchor tag.
The base URL must satisfy the URI grammar. In other words, it must contain a scheme.
Relative references are only usable when in the context of a base absolute URI. This process of resolving a relative reference within the context of a base URI is defined in detail in rfc3986 (see below).
The resolution process works as if the relative reference is appended to the base URI and the result is normalized.
Given the input base URL, this function resolves the relative reference as if performing the following steps:
Ensure the base URI has at least a scheme
Normalizing the reference path
Merge base and reference paths
Normalize the merged path
This function places the result of the resolution into dest, which can be any of the url containers that inherit from url_base.
If an error occurs, the contents of dest is unspecified and ec is set.
Abnormal hrefs where the number of ".." segments exceeds the number of segments in the base path are handled by including the unmatched ".." segments in the result, as described in Errata 4547.
url dest;
system::error_code ec;
resolve("/one/two/three", "four", dest, ec);
assert( dest.str() == "/one/two/four" );
resolve("http://example.com/", "/one", dest, ec);
assert( dest.str() == "http://example.com/one" );
resolve("http://example.com/one", "/two", dest, ec);
assert( dest.str() == "http://example.com/two" );
resolve("http://a/b/c/d;p?q", "g#s", dest, ec);
assert( dest.str() == "http://a/b/c/g#s" );
absolute-URI = scheme ":" hier-part [ "?" query ]
Basic guarantee. Calls to allocate may throw.
boost::system::result upon success, otherwise an error code if !base.has_scheme().
| Name | Description |
|---|---|
| base | The base URL to resolve against. |
| ref | The URL reference to resolve. |
| dest | The container where the result is written, upon success. |
Return the known scheme for a non-normalized string, if known
If the string does not identify a known scheme, the value scheme::unknown is returned.
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
| Name | Description |
|---|---|
| s | The string holding the scheme |
Swap
Exchanges the contents of v0 with another v1. All views, iterators and references remain valid.
If &v0 == &v1, this function call has no effect.
url u1( "https://www.example.com" );
url u2( "https://www.boost.org" );
std::swap(u1, u2);
assert(u1 == "https://www.boost.org" );
assert(u2 == "https://www.example.com" );
v0.swap( v1 );
Constant
Throws nothing
| Name | Description |
|---|---|
| v0 | The first object to swap |
| v1 | The second object to swap |
Return the normalized string for a known scheme
| Name | Description |
|---|---|
| s | The known scheme constant |
Stream insertion operators
<boost/url/authority_view.hpp>Format the address to an output stream
std::ostream&
operator<<(
std::ostream& os,
ipv6_address const& addr);
» more...
Format the address to an output stream.
std::ostream&
operator<<(
std::ostream& os,
ipv4_address const& addr);
» more...
Format the string with percent-decoding applied to the output stream
std::ostream&
operator<<(
std::ostream& os,
decode_view const& s);
» more...
Format the url to the output stream
std::ostream&
operator<<(
std::ostream& os,
url_view_base const& u);
» more...
Format the encoded authority to the output stream
std::ostream&
operator<<(
std::ostream& os,
authority_view const& a);
» more...
Format to an output stream
std::ostream&
operator<<(
std::ostream& os,
params_encoded_base const& qp);
» more...
Format to an output stream
std::ostream&
operator<<(
std::ostream& os,
params_base const& qp);
» more...
Format to an output stream
std::ostream&
operator<<(
std::ostream& os,
segments_encoded_base const& ps);
» more...
Format to an output stream
std::ostream&
operator<<(
std::ostream& os,
segments_base const& ps);
» more...
| Name | Description |
|---|---|
| os | The output stream to write to. |
| addr | The address to write. |
| s | The decoded view to write |
| u | The url to write. |
| a | The URL to write |
| qp | The params to write |
| ps | The object to format. |
Format the address to an output stream
<boost/url/ipv6_address.hpp>
std::ostream&
operator<<(
std::ostream& os,
ipv6_address const& addr);
This hidden friend function writes the address to an output stream using standard notation.
Format the address to an output stream
This function writes the address to an output stream using standard notation.
| Name | Description |
|---|---|
| os | The output stream to write to. |
| addr | The address to write. |
Format the address to an output stream.
<boost/url/ipv4_address.hpp>
std::ostream&
operator<<(
std::ostream& os,
ipv4_address const& addr);
IPv4 addresses written to output streams are written in their dotted decimal format.
Format the address to an output stream.
IPv4 addresses written to output streams are written in their dotted decimal format.
Format the address to an output stream.
IPv4 addresses written to output streams are written in their dotted decimal format.
| Name | Description |
|---|---|
| os | The output stream. |
| addr | The address to format. |
Format the string with percent-decoding applied to the output stream
<boost/url/decode_view.hpp>
std::ostream&
operator<<(
std::ostream& os,
decode_view const& s);
This hidden friend function serializes the decoded view to the output stream.
Format the string with percent-decoding applied to the output stream
This function serializes the decoded view to the output stream.
| Name | Description |
|---|---|
| os | The output stream to write to |
| s | The decoded view to write |
Format the url to the output stream
<boost/url/url_view_base.hpp>
std::ostream&
operator<<(
std::ostream& os,
url_view_base const& u);
This function serializes the url to the specified output stream. Any percent-escapes are emitted as-is; no decoding is performed.
url_view u( "http://www.example.com/index.htm" );
std::stringstream ss;
ss << u;
assert( ss.str() == "http://www.example.com/index.htm" );
return os << u.buffer();
Linear in u.buffer().size()
Basic guarantee.
Format the url to the output stream
This function serializes the url to the specified output stream. Any percent-escapes are emitted as-is; no decoding is performed.
url_view u( "http://www.example.com/index.htm" );
std::stringstream ss;
ss << u;
assert( ss.str() == "http://www.example.com/index.htm" );
return os << u.buffer();
Linear in u.buffer().size()
Basic guarantee.
| Name | Description |
|---|---|
| os | The output stream to write to. |
| u | The url to write. |
Format the encoded authority to the output stream
<boost/url/authority_view.hpp>
std::ostream&
operator<<(
std::ostream& os,
authority_view const& a);
This hidden friend function serializes the encoded URL to the output stream.
authority_view a( "www.example.com" );
std::cout << a << std::endl;
Format the encoded authority to the output stream
This function serializes the encoded URL to the output stream.
authority_view a( "www.example.com" );
std::cout << a << std::endl;
| Name | Description |
|---|---|
| os | The output stream to write to |
| a | The URL to write |
Format to an output stream
<boost/url/params_encoded_base.hpp>
std::ostream&
operator<<(
std::ostream& os,
params_encoded_base const& qp);
Any percent-escapes are emitted as-is; no decoding is performed.
Linear in ps.buffer().size().
return os << ps.buffer();
| Name | Description |
|---|---|
| os | The output stream to write to |
| qp | The params to write |
Format to an output stream
<boost/url/params_base.hpp>
std::ostream&
operator<<(
std::ostream& os,
params_base const& qp);
Any percent-escapes are emitted as-is; no decoding is performed.
Linear in ps.buffer().size().
return os << ps.buffer();
| Name | Description |
|---|---|
| os | The output stream to write to |
| qp | The parameters to write |
Format to an output stream
<boost/url/segments_encoded_base.hpp>
std::ostream&
operator<<(
std::ostream& os,
segments_encoded_base const& ps);
Any percent-escapes are emitted as-is; no decoding is performed.
Linear in ps.buffer().size().
return os << ps.buffer();
| Name | Description |
|---|---|
| os | The output stream to write to. |
| ps | The object to format. |
Format to an output stream
<boost/url/segments_base.hpp>
std::ostream&
operator<<(
std::ostream& os,
segments_base const& ps);
Any percent-escapes are emitted as-is; no decoding is performed.
Linear in ps.buffer().size().
return os << ps.buffer();
| Name | Description |
|---|---|
| os | The output stream to write to. |
| ps | The segments to write. |
Equality operators
<boost/url/authority_view.hpp>Return true if two addresses are equal
bool
operator==(
ipv6_address const& a1,
ipv6_address const& a2) noexcept;
» more...
Return true if two addresses are equal
bool
operator==(
ipv4_address const& a1,
ipv4_address const& a2) noexcept;
» more...
Compare two decode views for equality
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator==(
S const& lhs,
decode_view const& rhs) noexcept;
» more...
Compare two decode views for equality
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator==(
decode_view const& lhs,
S const& rhs) noexcept;
» more...
Compare two decode views for equality
constexpr
bool
operator==(
decode_view const& lhs,
decode_view const& rhs) noexcept;
» more...
Return the result of comparing two URLs
bool
operator==(
url_view_base const& u0,
url_view_base const& u1) noexcept;
» more...
bool
operator==(
iterator const& it0,
iterator const& it1) noexcept;
» more...
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
bool
operator==(
authority_view const& a0,
authority_view const& a1) noexcept;
» more...
true if the addresses are equaltrue if the addresses are equal, otherwise false.true if decoded lhs is equal to the decoded rhstrue if u0 == u1true if a0 == a1, otherwise false| Name | Description |
|---|---|
| a1 | The first address to compare. |
| a2 | The second address to compare. |
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
| u0 | The first url to compare |
| u1 | The second url to compare |
| a0 | The first authority to compare |
Return true if two addresses are equal
<boost/url/ipv6_address.hpp>
bool
operator==(
ipv6_address const& a1,
ipv6_address const& a2) noexcept;
true if the addresses are equal
| Name | Description |
|---|---|
| a1 | The first address to compare. |
| a2 | The second address to compare. |
Return true if two addresses are equal
<boost/url/ipv4_address.hpp>
bool
operator==(
ipv4_address const& a1,
ipv4_address const& a2) noexcept;
true if the addresses are equal, otherwise false.
| Name | Description |
|---|---|
| a1 | The first address to compare. |
| a2 | The second address to compare. |
Compare two decode views for equality
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator==(
S const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for equality
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator==(
decode_view const& lhs,
S const& rhs) noexcept;
true if decoded lhs is equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for equality
<boost/url/decode_view.hpp>
constexpr
bool
operator==(
decode_view const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Return the result of comparing two URLs
<boost/url/url_view_base.hpp>
bool
operator==(
url_view_base const& u0,
url_view_base const& u1) noexcept;
The URLs are compared component by component as if they were first normalized.
url_view u0( "http://www.a.com/index.htm" );
url_view u1( "http://www.a.com/index.htm" );
assert( u0 == u1 );
url a(u0);
a.normalize();
url b(u1);
b.normalize();
return a.buffer() == b.buffer();
Linear in min( u0.size(), u1.size() )
Throws nothing
true if u0 == u1
| Name | Description |
|---|---|
| u0 | The first url to compare |
| u1 | The second url to compare |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
<boost/url/authority_view.hpp>
bool
operator==(
authority_view const& a0,
authority_view const& a1) noexcept;
Linear in min( a0.size(), a1.size() )
Throws nothing
true if a0 == a1, otherwise false
| Name | Description |
|---|---|
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Inequality operators
<boost/url/authority_view.hpp>Return true if two addresses are not equal
bool
operator!=(
ipv6_address const& a1,
ipv6_address const& a2) noexcept;
» more...
Return true if two addresses are not equal
bool
operator!=(
ipv4_address const& a1,
ipv4_address const& a2) noexcept;
» more...
Compare two decode views for inequality
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator!=(
S const& lhs,
decode_view const& rhs) noexcept;
» more...
Compare two decode views for inequality
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator!=(
decode_view const& lhs,
S const& rhs) noexcept;
» more...
Compare two decode views for inequality
constexpr
bool
operator!=(
decode_view const& lhs,
decode_view const& rhs) noexcept;
» more...
Return the result of comparing two URLs
bool
operator!=(
url_view_base const& u0,
url_view_base const& u1) noexcept;
» more...
bool
operator!=(
iterator const& it0,
iterator const& it1) noexcept;
» more...
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
bool
operator!=(
authority_view const& a0,
authority_view const& a1) noexcept;
» more...
true if the addresses are not equaltrue if the addresses are not equal, otherwise false.true if decoded lhs is not equal to the decoded rhstrue if u0 != u1true if a0 != a1, otherwise false| Name | Description |
|---|---|
| a1 | The first address to compare. |
| a2 | The second address to compare. |
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
| u0 | The first url to compare |
| u1 | The second url to compare |
| a0 | The first authority to compare |
Return true if two addresses are not equal
<boost/url/ipv6_address.hpp>
bool
operator!=(
ipv6_address const& a1,
ipv6_address const& a2) noexcept;
true if the addresses are not equal
| Name | Description |
|---|---|
| a1 | The first address to compare. |
| a2 | The second address to compare. |
Return true if two addresses are not equal
<boost/url/ipv4_address.hpp>
bool
operator!=(
ipv4_address const& a1,
ipv4_address const& a2) noexcept;
true if the addresses are not equal, otherwise false.
| Name | Description |
|---|---|
| a1 | The first address to compare. |
| a2 | The second address to compare. |
Compare two decode views for inequality
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator!=(
S const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is not equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for inequality
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator!=(
decode_view const& lhs,
S const& rhs) noexcept;
true if decoded lhs is not equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for inequality
<boost/url/decode_view.hpp>
constexpr
bool
operator!=(
decode_view const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is not equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Return the result of comparing two URLs
<boost/url/url_view_base.hpp>
bool
operator!=(
url_view_base const& u0,
url_view_base const& u1) noexcept;
The URLs are compared component by component as if they were first normalized.
url_view u0( "http://www.a.com/index.htm" );
url_view u1( "http://www.b.com/index.htm" );
assert( u0 != u1 );
url a(u0);
a.normalize();
url b(u1);
b.normalize();
return a.buffer() != b.buffer();
Linear in min( u0.size(), u1.size() )
Throws nothing
true if u0 != u1
| Name | Description |
|---|---|
| u0 | The first url to compare |
| u1 | The second url to compare |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
<boost/url/authority_view.hpp>
bool
operator!=(
authority_view const& a0,
authority_view const& a1) noexcept;
Linear in min( a0.size(), a1.size() )
Throws nothing
true if a0 != a1, otherwise false
| Name | Description |
|---|---|
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Less-than operators
<boost/url/authority_view.hpp>Compare two decode views for less than
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<(
S const& lhs,
decode_view const& rhs) noexcept;
» more...
Compare two decode views for less than
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<(
decode_view const& lhs,
S const& rhs) noexcept;
» more...
Compare two decode views for less than
constexpr
bool
operator<(
decode_view const& lhs,
decode_view const& rhs) noexcept;
» more...
Return the result of comparing two URLs
bool
operator<(
url_view_base const& u0,
url_view_base const& u1) noexcept;
» more...
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
bool
operator<(
authority_view const& a0,
authority_view const& a1) noexcept;
» more...
true if decoded lhs is less than to the decoded rhstrue if u0 < u1true if a0 < a1, otherwise false| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
| u0 | The first url to compare |
| u1 | The second url to compare |
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Compare two decode views for less than
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<(
S const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is less than to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for less than
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<(
decode_view const& lhs,
S const& rhs) noexcept;
true if decoded lhs is less than to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for less than
<boost/url/decode_view.hpp>
constexpr
bool
operator<(
decode_view const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is less than to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Return the result of comparing two URLs
<boost/url/url_view_base.hpp>
bool
operator<(
url_view_base const& u0,
url_view_base const& u1) noexcept;
The URLs are compared component by component as if they were first normalized.
url_view u0( "http://www.a.com/index.htm" );
url_view u1( "http://www.b.com/index.htm" );
assert( u0 < u1 );
url a(u0);
a.normalize();
url b(u1);
b.normalize();
return a.buffer() < b.buffer();
Linear in min( u0.size(), u1.size() )
Throws nothing
true if u0 < u1
| Name | Description |
|---|---|
| u0 | The first url to compare |
| u1 | The second url to compare |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
<boost/url/authority_view.hpp>
bool
operator<(
authority_view const& a0,
authority_view const& a1) noexcept;
Linear in min( a0.size(), a1.size() )
Throws nothing
true if a0 < a1, otherwise false
| Name | Description |
|---|---|
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Less-than-or-equal operators
<boost/url/authority_view.hpp>Compare two decode views for less than or equal
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<=(
S const& lhs,
decode_view const& rhs) noexcept;
» more...
Compare two decode views for less than or equal
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<=(
decode_view const& lhs,
S const& rhs) noexcept;
» more...
Compare two decode views for less than or equal
constexpr
bool
operator<=(
decode_view const& lhs,
decode_view const& rhs) noexcept;
» more...
Return the result of comparing two URLs
bool
operator<=(
url_view_base const& u0,
url_view_base const& u1) noexcept;
» more...
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
bool
operator<=(
authority_view const& a0,
authority_view const& a1) noexcept;
» more...
true if decoded lhs is less than or equal to the decoded rhstrue if u0 <= u1true if a0 <= a1, otherwise false| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
| u0 | The first url to compare |
| u1 | The second url to compare |
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Compare two decode views for less than or equal
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<=(
S const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is less than or equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for less than or equal
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator<=(
decode_view const& lhs,
S const& rhs) noexcept;
true if decoded lhs is less than or equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for less than or equal
<boost/url/decode_view.hpp>
constexpr
bool
operator<=(
decode_view const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is less than or equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Return the result of comparing two URLs
<boost/url/url_view_base.hpp>
bool
operator<=(
url_view_base const& u0,
url_view_base const& u1) noexcept;
The URLs are compared component by component as if they were first normalized.
url_view u0( "http://www.b.com/index.htm" );
url_view u1( "http://www.b.com/index.htm" );
assert( u0 <= u1 );
url a(u0);
a.normalize();
url b(u1);
b.normalize();
return a.buffer() <= b.buffer();
Linear in min( u0.size(), u1.size() )
Throws nothing
true if u0 <= u1
| Name | Description |
|---|---|
| u0 | The first url to compare |
| u1 | The second url to compare |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
<boost/url/authority_view.hpp>
bool
operator<=(
authority_view const& a0,
authority_view const& a1) noexcept;
Linear in min( a0.size(), a1.size() )
Throws nothing
true if a0 <= a1, otherwise false
| Name | Description |
|---|---|
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Greater-than operators
<boost/url/authority_view.hpp>Compare two decode views for greater than
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>(
S const& lhs,
decode_view const& rhs) noexcept;
» more...
Compare two decode views for greater than
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>(
decode_view const& lhs,
S const& rhs) noexcept;
» more...
Compare two decode views for greater than
constexpr
bool
operator>(
decode_view const& lhs,
decode_view const& rhs) noexcept;
» more...
Return the result of comparing two URLs
bool
operator>(
url_view_base const& u0,
url_view_base const& u1) noexcept;
» more...
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
bool
operator>(
authority_view const& a0,
authority_view const& a1) noexcept;
» more...
true if decoded lhs is greater than to the decoded rhstrue if u0 > u1true if a0 > a1, otherwise false| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
| u0 | The first url to compare |
| u1 | The second url to compare |
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Compare two decode views for greater than
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>(
S const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is greater than to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for greater than
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>(
decode_view const& lhs,
S const& rhs) noexcept;
true if decoded lhs is greater than to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for greater than
<boost/url/decode_view.hpp>
constexpr
bool
operator>(
decode_view const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is greater than to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Return the result of comparing two URLs
<boost/url/url_view_base.hpp>
bool
operator>(
url_view_base const& u0,
url_view_base const& u1) noexcept;
The URLs are compared component by component as if they were first normalized.
url_view u0( "http://www.b.com/index.htm" );
url_view u1( "http://www.a.com/index.htm" );
assert( u0 > u1 );
url a(u0);
a.normalize();
url b(u1);
b.normalize();
return a.buffer() > b.buffer();
Linear in min( u0.size(), u1.size() )
Throws nothing
true if u0 > u1
| Name | Description |
|---|---|
| u0 | The first url to compare |
| u1 | The second url to compare |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
<boost/url/authority_view.hpp>
bool
operator>(
authority_view const& a0,
authority_view const& a1) noexcept;
Linear in min( a0.size(), a1.size() )
Throws nothing
true if a0 > a1, otherwise false
| Name | Description |
|---|---|
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Greater-than-or-equal operators
<boost/url/authority_view.hpp>Compare two decode views for greater than or equal
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>=(
S const& lhs,
decode_view const& rhs) noexcept;
» more...
Compare two decode views for greater than or equal
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>=(
decode_view const& lhs,
S const& rhs) noexcept;
» more...
Compare two decode views for greater than or equal
constexpr
bool
operator>=(
decode_view const& lhs,
decode_view const& rhs) noexcept;
» more...
Return the result of comparing two URLs
bool
operator>=(
url_view_base const& u0,
url_view_base const& u1) noexcept;
» more...
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
bool
operator>=(
authority_view const& a0,
authority_view const& a1) noexcept;
» more...
true if decoded lhs is greater than or equal to the decoded rhstrue if u0 >= u1true if a0 >= a1, otherwise false| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
| u0 | The first url to compare |
| u1 | The second url to compare |
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Compare two decode views for greater than or equal
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>=(
S const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is greater than or equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for greater than or equal
<boost/url/decode_view.hpp>
template<std::convertible_to<core::string_view> S>
constexpr
bool
operator>=(
decode_view const& lhs,
S const& rhs) noexcept;
true if decoded lhs is greater than or equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Compare two decode views for greater than or equal
<boost/url/decode_view.hpp>
constexpr
bool
operator>=(
decode_view const& lhs,
decode_view const& rhs) noexcept;
true if decoded lhs is greater than or equal to the decoded rhs
| Name | Description |
|---|---|
| lhs | The left-hand-side decode view to compare |
| rhs | The right-hand-side decode view to compare |
Return the result of comparing two URLs
<boost/url/url_view_base.hpp>
bool
operator>=(
url_view_base const& u0,
url_view_base const& u1) noexcept;
The URLs are compared component by component as if they were first normalized.
url_view u0( "http://www.a.com/index.htm" );
url_view u1( "http://www.a.com/index.htm" );
assert( u0 >= u1 );
url a(u0);
a.normalize();
url b(u1);
b.normalize();
return a.buffer() >= b.buffer();
Linear in min( u0.size(), u1.size() )
Throws nothing
true if u0 >= u1
| Name | Description |
|---|---|
| u0 | The first url to compare |
| u1 | The second url to compare |
Return the result of comparing two authorities. The authorities are compared component by component as if they were first normalized.
<boost/url/authority_view.hpp>
bool
operator>=(
authority_view const& a0,
authority_view const& a1) noexcept;
Linear in min( a0.size(), a1.size() )
Throws nothing
true if a0 >= a1, otherwise false
| Name | Description |
|---|---|
| a0 | The first authority to compare |
| a1 | The second authority to compare |
Rule for absolute-URI
<boost/url/rfc/absolute_uri_rule.hpp>
inline constexpr /* implementation-defined */ absolute_uri_rule = {};
using value_type = url_view;
Rules are used with the function grammar::parse.
system::result< url_view > rv = grammar::parse( "http://example.com/index.htm?id=1", absolute_uri_rule );
absolute-URI = scheme ":" hier-part [ "?" query ]
hier-part = "//" authority path-abempty
/ path-absolute
/ path-rootless
/ path-empty
Rule for authority
<boost/url/rfc/authority_rule.hpp>
constexpr /* implementation-defined */ authority_rule = {};
using value_type = authority_view;
Rules are used with the function grammar::parse.
system::result< authority_view > rv = grammar::parse( "user:pass@example.com:8080", authority_rule );
authority = [ userinfo "@" ] host [ ":" port ]
The gen-delims character set
<boost/url/rfc/gen_delim_chars.hpp>
constexpr grammar::lut_chars gen_delim_chars = ":/?#[]@";
Character sets are used with rules and the functions grammar::find_if and grammar::find_if_not.
system::result< decode_view > rv = grammar::parse( "Program%20Files", pct_encoded_rule( gen_delim_chars ) );
gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@"
Ignore case when comparing
<boost/url/ignore_case.hpp>
inline constexpr /* implementation-defined */ ignore_case = {};
This value may be optionally passed to functions accepting a parameter of type ignore_case_param to indicate that comparisons should be case-insensitive.
Rule for an IP version 4 style address
<boost/url/rfc/ipv4_address_rule.hpp>
constexpr /* implementation-defined */ ipv4_address_rule = {};
using value_type = ipv4_address;
Rules are used with the function grammar::parse.
system::result< ipv4_address > rv = grammar::parse( "192.168.0.1", ipv4_address_rule );
IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
dec-octet = DIGIT ; 0-9
/ %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
Rule for An IP version 6 style address
<boost/url/rfc/ipv6_address_rule.hpp>
constexpr /* implementation-defined */ ipv6_address_rule = {};
using value_type = ipv6_address;
Rules are used with the function grammar::parse.
system::result< ipv6_address > rv = grammar::parse( "2001:0db8:85a3:0000:0000:8a2e:0370:7334", ipv6_address_rule );
IPv6address = 6( h16 ":" ) ls32
/ "::" 5( h16 ":" ) ls32
/ [ h16 ] "::" 4( h16 ":" ) ls32
/ [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32
/ [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32
/ [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32
/ [ *4( h16 ":" ) h16 ] "::" ls32
/ [ *5( h16 ":" ) h16 ] "::" h16
/ [ *6( h16 ":" ) h16 ] "::"
ls32 = ( h16 ":" h16 ) / IPv4address
; least-significant 32 bits of address
h16 = 1*4HEXDIG
; 16 bits of address represented in hexadecimal
Constant indicating no value in a param
Rule for origin-form
<boost/url/rfc/origin_form_rule.hpp>
inline constexpr /* implementation-defined */ origin_form_rule = {};
This appears in the HTTP/1 request-line grammar.
using value_type = url_view;
Rules are used with the function grammar::parse.
system::result< url_view > rv = grammar::parse( "/index.htm?layout=mobile", origin_form_rule );
origin-form = absolute-path [ "?" query ]
absolute-path = 1*( "/" segment )
The path character set
<boost/url/rfc/pchars.hpp>
constexpr auto pchars = unreserved_chars + sub_delim_chars + ':' + '@';
Character sets are used with rules and the functions grammar::find_if and grammar::find_if_not.
system::result< decode_view > rv = grammar::parse( "Program%20Files", pchars );
pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
Rule for a query string
<boost/url/rfc/query_rule.hpp>
constexpr /* implementation-defined */ query_rule = {};
using value_type = params_encoded_view;
Rules are used with the function grammar::parse.
system::result< params_encoded_view > rv = grammar::parse( "format=web&id=42&compact", query_rule );
query = *( pchar / "/" / "?" )
query-params = [ query-param ] *( "&" query-param )
query-param = key [ "=" value ]
key = *qpchar
value = *( qpchar / "=" )
qpchar = unreserved
/ pct-encoded
/ "!" / "$" / "'" / "(" / ")"
/ "*" / "+" / "," / ";"
/ ":" / "@" / "/" / "?"
Rule for relative-ref
<boost/url/rfc/relative_ref_rule.hpp>
constexpr /* implementation-defined */ relative_ref_rule = {};
using value_type = url_view;
Rules are used with the function grammar::parse.
system::result< url_view > rv = grammar::parse( "images/dot.gif?v=hide#a", relative_ref_rule );
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
The reserved character set
<boost/url/rfc/reserved_chars.hpp>
constexpr auto reserved_chars = ~unreserved_chars;
Character sets are used with rules and the functions grammar::find_if and grammar::find_if_not.
system::result< decode_view > rv = grammar::parse( "Program%20Files", pct_encoded_rule( reserved_chars ) );
The sub-delims character set
<boost/url/rfc/sub_delim_chars.hpp>
constexpr grammar::lut_chars sub_delim_chars = "!$&()*+,;=\x27";
Character sets are used with rules and the functions grammar::find_if and grammar::find_if_not.
system::result< decode_view > = grammar::parse( "Program%20Files", pct_encoded_rule( sub_delim_chars ) );
sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
/ "*" / "+" / "," / ";" / "="
The unreserved character set
<boost/url/rfc/unreserved_chars.hpp>
constexpr grammar::lut_chars unreserved_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789"
"-._~";
Character sets are used with rules and the functions grammar::find_if and grammar::find_if_not.
system::result< decode_view > rv = grammar::parse( "Program%20Files", pct_encoded_rule( unreserved_chars ) );
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
Rule for URI-reference
<boost/url/rfc/uri_reference_rule.hpp>
constexpr /* implementation-defined */ uri_reference_rule = {};
using value_type = url_view;
Rules are used with the function grammar::parse.
system::result< url_view > rv = grammar::parse( "ws://echo.example.com/?name=boost#demo", uri_reference_rule );
URI-reference = URI / relative-ref
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
Rule for URI
<boost/url/rfc/uri_rule.hpp>
constexpr /* implementation-defined */ uri_rule = {};
using value_type = url_view;
Rules are used with the function grammar::parse.
system::result< url_view > rv = grammar::parse( "https://www.example.com/index.htm?id=guest#s1", uri_rule );
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]