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 >
acquire_filter(const CharT * filter)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 >
acquire_filter(std::basic_string<CharT,TraitsT,AllocatorT> const & filter)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&
acquire_filter(FilterT const & filter)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 >
setup_filter(SinkT &,ArgsT const &,mpl::true_)67 inline void setup_filter(SinkT&, ArgsT const&, mpl::true_)
68 {
69 }
70
71 template< typename SinkT, typename ArgsT >
setup_filter(SinkT & s,ArgsT const & args,mpl::false_)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 >
acquire_formatter(const CharT * formatter)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 >
acquire_formatter(std::basic_string<CharT,TraitsT,AllocatorT> const & formatter)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&
acquire_formatter(FormatterT const & formatter)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 >
setup_formatter(SinkT &,ArgsT const &,mpl::true_)100 inline void setup_formatter(SinkT&, ArgsT const&, mpl::true_)
101 {
102 }
103
104 template< typename SinkT, typename ArgsT >
setup_formatter(SinkT & s,ArgsT const & args,mpl::false_)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_
119