ceph/src/boost/libs/log/include/boost/log/detail/sink_init_helpers.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   sink_init_helpers.hpp
   9  * \author Andrey Semashev
  10  * \date   14.03.2009
  11  *
  12  * \brief  This header is the Boost.Log library implementation, see the library documentation
  13  *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
  14  */
  15
  16 #ifndef BOOST_LOG_DETAIL_SINK_INIT_HELPERS_HPP_INCLUDED_
  17 #define BOOST_LOG_DETAIL_SINK_INIT_HELPERS_HPP_INCLUDED_
  18
  19 #include <string>
  20 #include <boost/mpl/bool.hpp>
  21 #include <boost/parameter/binding.hpp>
  22 #include <boost/type_traits/is_void.hpp>
  23 #include <boost/core/enable_if.hpp>
  24 #include <boost/phoenix/core/is_actor.hpp>
  25 #include <boost/log/detail/config.hpp>
  26 #include <boost/log/core/core.hpp>
  27 #include <boost/log/expressions/filter.hpp>
  28 #include <boost/log/expressions/formatter.hpp>
  29 #include <boost/log/utility/setup/filter_parser.hpp>
  30 #include <boost/log/utility/setup/formatter_parser.hpp>
  31 #include <boost/log/keywords/filter.hpp>
  32 #include <boost/log/keywords/format.hpp>
  33 #include <boost/log/detail/header.hpp>
  34
  35 #ifdef BOOST_HAS_PRAGMA_ONCE
  36 #pragma once
  37 #endif
  38
  39 namespace boost {
  40
  41 BOOST_LOG_OPEN_NAMESPACE
  42
  43 namespace aux {
  44
  45 // The function creates a filter functional object from the provided argument
  46 template< typename CharT >
  47 inline filter acquire_filter(const CharT* filter)
  48 {
  49     return boost::log::parse_filter(filter);
  50 }
  51 template< typename CharT, typename TraitsT, typename AllocatorT >
  52 inline filter acquire_filter(std::basic_string< CharT, TraitsT, AllocatorT > const& filter)
  53 {
  54     return boost::log::parse_filter(filter);
  55 }
  56 template< typename FilterT >
  57 inline typename boost::enable_if_c<
  58     phoenix::is_actor< FilterT >::value,
  59     FilterT const&
  60 >::type acquire_filter(FilterT const& filter)
  61 {
  62     return filter;
  63 }
  64
  65 // The function installs filter into the sink, if provided in the arguments pack
  66 template< typename SinkT, typename ArgsT >
  67 inline void setup_filter(SinkT&, ArgsT const&, mpl::true_)
  68 {
  69 }
  70
  71 template< typename SinkT, typename ArgsT >
  72 inline void setup_filter(SinkT& s, ArgsT const& args, mpl::false_)
  73 {
  74     s.set_filter(aux::acquire_filter(args[keywords::filter]));
  75 }
  76
  77
  78 // The function creates a filter functional object from the provided argument
  79 template< typename CharT >
  80 inline basic_formatter< CharT > acquire_formatter(const CharT* formatter)
  81 {
  82     return boost::log::parse_formatter(formatter);
  83 }
  84 template< typename CharT, typename TraitsT, typename AllocatorT >
  85 inline basic_formatter< CharT > acquire_formatter(std::basic_string< CharT, TraitsT, AllocatorT > const& formatter)
  86 {
  87     return boost::log::parse_formatter(formatter);
  88 }
  89 template< typename FormatterT >
  90 inline typename boost::enable_if_c<
  91     phoenix::is_actor< FormatterT >::value,
  92     FormatterT const&
  93 >::type acquire_formatter(FormatterT const& formatter)
  94 {
  95     return formatter;
  96 }
  97
  98 // The function installs filter into the sink, if provided in the arguments pack
  99 template< typename SinkT, typename ArgsT >
 100 inline void setup_formatter(SinkT&, ArgsT const&, mpl::true_)
 101 {
 102 }
 103
 104 template< typename SinkT, typename ArgsT >
 105 inline void setup_formatter(SinkT& s, ArgsT const& args, mpl::false_)
 106 {
 107     s.set_formatter(aux::acquire_formatter(args[keywords::format]));
 108 }
 109
 110 } // namespace aux
 111
 112 BOOST_LOG_CLOSE_NAMESPACE // namespace log
 113
 114 } // namespace boost
 115
 116 #include <boost/log/detail/footer.hpp>
 117
 118 #endif // BOOST_LOG_DETAIL_SINK_INIT_HELPERS_HPP_INCLUDED_