Constructor
Synopsis
Declared in header <boost/url/params_view.hpp>
params_view(
core::string_view s,
encoding_opts opt);
Description
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.
Example
encoding_opts opt;
opt.space_as_plus = true;
params_view qp( "name=John+Doe", opt );
Effects
return params_view(parse_query( s ).value(), opt);
Postconditions
this->buffer().data() == s.data()
Complexity
Linear in s
.
Exception Safety
Exceptions thrown on invalid input.
BNF
query-params = [ query-param ] *( "&" query-param )
query-param = key [ "=" value ]
Specification
Exceptions
Name | Thrown on |
---|---|
|
|
Parameters
Name | Description |
---|---|
s |
The string to parse. |
opt |
The options for decoding. If
this parameter is omitted, |