Chris@102: /*
Chris@102:  *          Copyright Andrey Semashev 2007 - 2015.
Chris@102:  * Distributed under the Boost Software License, Version 1.0.
Chris@102:  *    (See accompanying file LICENSE_1_0.txt or copy at
Chris@102:  *          http://www.boost.org/LICENSE_1_0.txt)
Chris@102:  */
Chris@102: /*!
Chris@102:  * \file   support/std_regex.hpp
Chris@102:  * \author Andrey Semashev
Chris@102:  * \date   19.03.2014
Chris@102:  *
Chris@102:  * This header enables \c std::regex support for Boost.Log.
Chris@102:  */
Chris@102: 
Chris@102: #ifndef BOOST_LOG_SUPPORT_STD_REGEX_HPP_INCLUDED_
Chris@102: #define BOOST_LOG_SUPPORT_STD_REGEX_HPP_INCLUDED_
Chris@102: 
Chris@102: #include <boost/log/detail/config.hpp>
Chris@102: 
Chris@102: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@102: #pragma once
Chris@102: #endif
Chris@102: 
Chris@102: #if defined(BOOST_NO_CXX11_HDR_REGEX)
Chris@102: 
Chris@102: #if defined(__GNUC__)
Chris@102: #pragma message "Boost.Log: This header requires support for std::regex in the standard library."
Chris@102: #elif defined(_MSC_VER)
Chris@102: #pragma message("Boost.Log: This header requires support for std::regex in the standard library.")
Chris@102: #endif
Chris@102: 
Chris@102: #else // defined(BOOST_NO_CXX11_HDR_REGEX)
Chris@102: 
Chris@102: #include <regex>
Chris@102: #include <string>
Chris@102: #include <boost/log/utility/functional/matches.hpp>
Chris@102: #include <boost/log/detail/header.hpp>
Chris@102: 
Chris@102: namespace boost {
Chris@102: 
Chris@102: BOOST_LOG_OPEN_NAMESPACE
Chris@102: 
Chris@102: namespace aux {
Chris@102: 
Chris@102: //! This tag type is used if an expression is recognized as \c std::regex
Chris@102: struct std_regex_expression_tag;
Chris@102: 
Chris@102: //! The metafunction detects the matching expression kind and returns a tag that is used to specialize \c match_traits
Chris@102: template< typename CharT, typename ReTraitsT >
Chris@102: struct matching_expression_kind< std::basic_regex< CharT, ReTraitsT > >
Chris@102: {
Chris@102:     typedef std_regex_expression_tag type;
Chris@102: };
Chris@102: 
Chris@102: //! The matching function implementation
Chris@102: template< typename ExpressionT >
Chris@102: struct match_traits< ExpressionT, std_regex_expression_tag >
Chris@102: {
Chris@102:     typedef ExpressionT compiled_type;
Chris@102:     static compiled_type compile(ExpressionT const& expr) { return expr; }
Chris@102: 
Chris@102:     template< typename StringT, typename CharT, typename ReTraitsT >
Chris@102:     static bool matches(StringT const& str, std::basic_regex< CharT, ReTraitsT > const& expr, std::regex_constants::match_flag_type flags = std::regex_constants::match_default)
Chris@102:     {
Chris@102:         return std::regex_match(str.begin(), str.end(), expr, flags);
Chris@102:     }
Chris@102: 
Chris@102:     template< typename CharT, typename StringTraitsT, typename AllocatorT, typename ReTraitsT >
Chris@102:     static bool matches(std::basic_string< CharT, StringTraitsT, AllocatorT > const& str, std::basic_regex< CharT, ReTraitsT > const& expr, std::regex_constants::match_flag_type flags = std::regex_constants::match_default)
Chris@102:     {
Chris@102:         const CharT* p = str.c_str();
Chris@102:         return std::regex_match(p, p + str.size(), expr, flags);
Chris@102:     }
Chris@102: };
Chris@102: 
Chris@102: } // namespace aux
Chris@102: 
Chris@102: BOOST_LOG_CLOSE_NAMESPACE // namespace log
Chris@102: 
Chris@102: } // namespace boost
Chris@102: 
Chris@102: #include <boost/log/detail/footer.hpp>
Chris@102: 
Chris@102: #endif // defined(BOOST_NO_CXX11_HDR_REGEX)
Chris@102: 
Chris@102: #endif // BOOST_LOG_SUPPORT_STD_REGEX_HPP_INCLUDED_