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Name	Size	Mode	Actions
attributes/	-	0755	rm
core/	-	0755	rm
detail/	-	0755	rm
expressions/	-	0755	rm
keywords/	-	0755	rm
sinks/	-	0755	rm
sources/	-	0755	rm
support/	-	0755	rm
utility/	-	0755	rm
attributes.hpp	1178	0644	edit dl rm
common.hpp	1328	0644	edit dl rm
core.hpp	701	0644	edit dl rm
exceptions.hpp	15223	0644	edit dl rm
expressions.hpp	1116	0644	edit dl rm
sinks.hpp	1552	0644	edit dl rm
trivial.hpp	4187	0644	edit dl rm

Edit: /usr/include/boost/log/trivial.hpp (4187B)

/*
 *          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   log/trivial.hpp
 * \author Andrey Semashev
 * \date   07.11.2009
 *
 * This header defines tools for trivial logging support
 */

#ifndef BOOST_LOG_TRIVIAL_HPP_INCLUDED_
#define BOOST_LOG_TRIVIAL_HPP_INCLUDED_

#include <cstddef>
#include <iosfwd>
#include <ostream>
#include <boost/log/detail/config.hpp>
#include <boost/log/keywords/severity.hpp>
#include <boost/log/sources/severity_logger.hpp>
#include <boost/log/sources/record_ostream.hpp>
#include <boost/log/detail/header.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if !defined(BOOST_LOG_USE_CHAR)
#error Boost.Log: Trivial logging is available for narrow-character builds only. Use advanced initialization routines to setup wide-character logging.
#endif

namespace boost {

BOOST_LOG_OPEN_NAMESPACE

namespace trivial {

//! Trivial severity levels
enum severity_level
{
    trace,
    debug,
    info,
    warning,
    error,
    fatal
};

//! Returns stringized enumeration value or \c NULL, if the value is not valid
template< typename CharT >
BOOST_LOG_API const CharT* to_string(severity_level lvl);

//! Returns stringized enumeration value or \c NULL, if the value is not valid
inline const char* to_string(severity_level lvl)
{
    return boost::log::trivial::to_string< char >(lvl);
}

//! Parses enumeration value from string and returns \c true on success and \c false otherwise
template< typename CharT >
BOOST_LOG_API bool from_string(const CharT* str, std::size_t len, severity_level& lvl);

//! Outputs stringized representation of the severity level to the stream
template< typename CharT, typename TraitsT >
inline std::basic_ostream< CharT, TraitsT >& operator<< (
    std::basic_ostream< CharT, TraitsT >& strm, severity_level lvl)
{
    const CharT* str = boost::log::trivial::to_string< CharT >(lvl);
    if (BOOST_LIKELY(!!str))
        strm << str;
    else
        strm << static_cast< int >(lvl);
    return strm;
}

//! Reads stringized representation of the severity level from the stream
template< typename CharT, typename TraitsT >
BOOST_LOG_API std::basic_istream< CharT, TraitsT >& operator>> (
    std::basic_istream< CharT, TraitsT >& strm, severity_level& lvl);

//! Trivial logger type
#if !defined(BOOST_LOG_NO_THREADS)
typedef sources::severity_logger_mt< severity_level > logger_type;
#else
typedef sources::severity_logger< severity_level > logger_type;
#endif

/*!
 * \brief Trivial logger tag
 *
 * This tag can be used to acquire the logger that is used with lrivial logging macros.
 * This may be useful when the logger is used with other macros which require a logger.
 */
struct logger
{
    //! Logger type
    typedef trivial::logger_type logger_type;

/*!
     * Returns a reference to the trivial logger instance
     */
    static BOOST_LOG_API logger_type& get();

// Implementation details - never use these
#if !defined(BOOST_LOG_DOXYGEN_PASS)
    enum registration_line_t { registration_line = __LINE__ };
    static const char* registration_file() { return __FILE__; }
    static BOOST_LOG_API logger_type construct_logger();
#endif
};

/*!
 * The macro is used to initiate logging. The \c lvl argument of the macro specifies one of the following
 * severity levels: \c trace, \c debug, \c info, \c warning, \c error or \c fatal (see \c severity_level enum).
 * Following the macro, there may be a streaming expression that composes the record message string. For example:
 *
 * \code
 * BOOST_LOG_TRIVIAL(info) << "Hello, world!";
 * \endcode
 */
#define BOOST_LOG_TRIVIAL(lvl)\
    BOOST_LOG_STREAM_WITH_PARAMS(::boost::log::trivial::logger::get(),\
        (::boost::log::keywords::severity = ::boost::log::trivial::lvl))

} // namespace trivial

BOOST_LOG_CLOSE_NAMESPACE // namespace log

} // namespace boost

#include <boost/log/detail/footer.hpp>
#if defined(BOOST_LOG_EXPRESSIONS_KEYWORD_HPP_INCLUDED_)
#include <boost/log/detail/trivial_keyword.hpp>
#endif

#endif // BOOST_LOG_TRIVIAL_HPP_INCLUDED_

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