Boost C++ Libraries

(Inherited from url_view_base)

Return the query.

Synopsis

template<
    class StringToken = string_token::return_string>
StringToken::result_type
query(
    StringToken&& token = {}) const;

Description

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.

Example

assert( url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).query() == "id=42&name=jane-doe&page size=20" );

Complexity

Linear in this->query().size().

Exception Safety

Calls to allocate may throw.

BNF

query           = *( pchar / "/" / "?" )

query-param     = key [ "=" value ]
query-params    = [ query-param ] *( "&" query-param )

Specification

See Also

encoded_params, encoded_query, has_query, params.