Return the buffer size needed for percent-encoding

Synopsis

Declared in header <boost/url/encode.hpp>

template<class CharSet>
std::size_t
encoded_size(
    core::string_view s,
    CharSet const& unreserved,
    encoding_opts opt = = {}) noexcept;

Description

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.

Example

assert( encoded_size( "My Stuff", pchars ) == 10 );

Exception Safety

Throws nothing.

Specification

Return Value

The number of bytes needed, excluding any null terminator.

Parameters

Name Description

s

The string to measure.

unreserved

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.

See Also

encode , encoding_opts , make_pct_string_view .