ceph/src/boost/boost/log/support/regex.hpp

   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;
  49     static compiled_type compile(ExpressionT const& expr) { return expr; }
  50
  51     template< typename StringT, typename CharT, typename TraitsT >
  52     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 >
  58     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_