Added thirdparty: boost library

thirdparty/include/boost/url/rfc/pct_encoded_rule.hpp

@@ -0,0 +1,122 @@
+//
+// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// Official repository: https://github.com/boostorg/url
+//
+
+#ifndef BOOST_URL_RFC_PCT_ENCODED_RULE_HPP
+#define BOOST_URL_RFC_PCT_ENCODED_RULE_HPP
+
+#include <boost/url/detail/config.hpp>
+#include <boost/url/error_types.hpp>
+#include <boost/url/pct_string_view.hpp>
+#include <boost/url/grammar/charset.hpp>
+
+namespace boost {
+namespace urls {
+
+/** Rule for a string with percent-encoded escapes
+
+    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.
+   
+    @par Value Type
+    @code
+    using value_type = pct_string_view;
+    @endcode
+
+    @par Example
+    Rules are used with the function @ref grammar::parse.
+    @code
+    //  pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+
+    system::result< pct_string_view > rv = grammar::parse( "Program%20Files", pct_encoded_rule( pchars ) );
+    @endcode
+
+    @par BNF
+    @code
+    pct-encoded   = "%" HEXDIG HEXDIG
+    @endcode
+
+    @param 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.
+
+    @par Specification
+    @li <a href="https://datatracker.ietf.org/doc/html/rfc3986#section-2.1">
+        2.1. Percent-Encoding (rfc3986)</a>
+
+    @see
+        @ref grammar::parse,
+        @ref pchars,
+        @ref pct_string_view.
+*/
+#ifdef BOOST_URL_DOCS
+/**@{*/
+template<class CharSet>
+constexpr
+__implementation_defined__
+pct_encoded_rule( CharSet const& cs ) noexcept;
+/**@}*/
+#else
+template<class CharSet>
+struct pct_encoded_rule_t
+{
+    using value_type = pct_string_view;
+
+    template<class CharSet_>
+    friend
+    constexpr
+    auto
+    pct_encoded_rule(
+        CharSet_ const& cs) noexcept ->
+            pct_encoded_rule_t<CharSet_>;
+
+    system::result<value_type>
+    parse(
+        char const*& it,
+        char const* end) const noexcept;
+
+private:
+    constexpr
+    pct_encoded_rule_t(
+        CharSet const& cs) noexcept
+        : cs_(cs)
+    {
+    }
+
+    CharSet cs_;
+};
+
+template<class CharSet>
+constexpr
+auto
+pct_encoded_rule(
+    CharSet const& cs) noexcept ->
+        pct_encoded_rule_t<CharSet>
+{
+    // If an error occurs here it means that
+    // the value of your type does not meet
+    // the requirements. Please check the
+    // documentation!
+    static_assert(
+        grammar::is_charset<CharSet>::value,
+        "CharSet requirements not met");
+
+    return pct_encoded_rule_t<CharSet>(cs);
+}
+
+#endif
+
+} // urls
+} // boost
+
+#include <boost/url/rfc/impl/pct_encoded_rule.hpp>
+
+#endif