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