1 /* 2 * Copyright Andrey Semashev 2007 - 2015. 3 * Distributed under the Boost Software License, Version 1.0. 4 * (See accompanying file LICENSE_1_0.txt or copy at 5 * http://www.boost.org/LICENSE_1_0.txt) 6 */ 7 /*! 8 * \file support/regex.hpp 9 * \author Andrey Semashev 10 * \date 18.07.2009 11 * 12 * This header enables Boost.Regex support for Boost.Log. 13 */ 14 15 #ifndef BOOST_LOG_SUPPORT_REGEX_HPP_INCLUDED_ 16 #define BOOST_LOG_SUPPORT_REGEX_HPP_INCLUDED_ 17 18 #include <string> 19 #include <boost/regex.hpp> 20 #include <boost/log/detail/config.hpp> 21 #include <boost/log/utility/functional/matches.hpp> 22 #include <boost/log/detail/header.hpp> 23 24 #ifdef BOOST_HAS_PRAGMA_ONCE 25 #pragma once 26 #endif 27 28 namespace boost { 29 30 BOOST_LOG_OPEN_NAMESPACE 31 32 namespace aux { 33 34 //! This tag type is used if an expression is recognized as a Boost.Regex expression 35 struct boost_regex_expression_tag; 36 37 //! The metafunction detects the matching expression kind and returns a tag that is used to specialize \c match_traits 38 template< typename CharT, typename TraitsT > 39 struct matching_expression_kind< boost::basic_regex< CharT, TraitsT > > 40 { 41 typedef boost_regex_expression_tag type; 42 }; 43 44 //! The matching function implementation 45 template< typename ExpressionT > 46 struct match_traits< ExpressionT, boost_regex_expression_tag > 47 { 48 typedef ExpressionT compiled_type; compileboost::aux::match_traits49 static compiled_type compile(ExpressionT const& expr) { return expr; } 50 51 template< typename StringT, typename CharT, typename TraitsT > matchesboost::aux::match_traits52 static bool matches(StringT const& str, boost::basic_regex< CharT, TraitsT > const& expr, boost::regex_constants::match_flag_type flags = boost::regex_constants::match_default) 53 { 54 return boost::regex_match(str.begin(), str.end(), expr, flags); 55 } 56 57 template< typename CharT, typename StringTraitsT, typename AllocatorT, typename ReTraitsT > matchesboost::aux::match_traits58 static bool matches( 59 std::basic_string< CharT, StringTraitsT, AllocatorT > const& str, 60 boost::basic_regex< CharT, ReTraitsT > const& expr, 61 boost::regex_constants::match_flag_type flags = boost::regex_constants::match_default) 62 { 63 const CharT* p = str.c_str(); 64 return boost::regex_match(p, p + str.size(), expr, flags); 65 } 66 }; 67 68 } // namespace aux 69 70 BOOST_LOG_CLOSE_NAMESPACE // namespace log 71 72 } // namespace boost 73 74 #include <boost/log/detail/footer.hpp> 75 76 #endif // BOOST_LOG_SUPPORT_REGEX_HPP_INCLUDED_ 77