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- /*
- * 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)
- */
- #include <string>
- #include <iostream>
- #include <stdexcept>
- #include <boost/smart_ptr/shared_ptr.hpp>
- #include <boost/smart_ptr/make_shared_object.hpp>
- #include <boost/format.hpp>
- #include <boost/phoenix.hpp>
- #include <boost/log/core.hpp>
- #include <boost/log/expressions.hpp>
- #include <boost/log/attributes/attribute_name.hpp>
- #include <boost/log/sources/logger.hpp>
- #include <boost/log/sources/record_ostream.hpp>
- #include <boost/log/utility/value_ref.hpp>
- #include <boost/log/utility/formatting_ostream.hpp>
- #include <boost/log/utility/manipulators/add_value.hpp>
- #include <boost/log/utility/setup/formatter_parser.hpp>
- #include <boost/log/utility/setup/common_attributes.hpp>
- #include <boost/log/utility/setup/console.hpp>
- namespace logging = boost::log;
- namespace attrs = boost::log::attributes;
- namespace src = boost::log::sources;
- namespace expr = boost::log::expressions;
- namespace sinks = boost::log::sinks;
- namespace keywords = boost::log::keywords;
- //[ example_extension_formatter_parser_point_definition
- struct point
- {
- float m_x, m_y;
- point() : m_x(0.0f), m_y(0.0f) {}
- point(float x, float y) : m_x(x), m_y(y) {}
- };
- template< typename CharT, typename TraitsT >
- std::basic_ostream< CharT, TraitsT >& operator<< (std::basic_ostream< CharT, TraitsT >& strm, point const& p)
- {
- strm << "(" << p.m_x << ", " << p.m_y << ")";
- return strm;
- }
- //]
- #if 0
- //[ example_extension_simple_formatter_factory
- void init_factories()
- {
- logging::register_simple_formatter_factory< point, char >("Coordinates");
- }
- //]
- #endif
- //[ example_extension_custom_formatter_factory
- // Custom point formatter
- class point_formatter
- {
- public:
- typedef void result_type;
- public:
- explicit point_formatter(std::string const& fmt) : m_format(fmt)
- {
- }
- void operator() (logging::formatting_ostream& strm, logging::value_ref< point > const& value) const
- {
- if (value)
- {
- point const& p = value.get();
- m_format % p.m_x % p.m_y;
- strm << m_format;
- m_format.clear();
- }
- }
- private:
- mutable boost::format m_format;
- };
- // Custom point formatter factory
- class point_formatter_factory :
- public logging::basic_formatter_factory< char, point >
- {
- public:
- formatter_type create_formatter(logging::attribute_name const& name, args_map const& args)
- {
- args_map::const_iterator it = args.find("format");
- if (it != args.end())
- return boost::phoenix::bind(point_formatter(it->second), expr::stream, expr::attr< point >(name));
- else
- return expr::stream << expr::attr< point >(name);
- }
- };
- void init_factories()
- {
- logging::register_formatter_factory("Coordinates", boost::make_shared< point_formatter_factory >());
- }
- //]
- void init_logging()
- {
- init_factories();
- logging::add_console_log(std::clog, keywords::format = "%TimeStamp% %Coordinates(format=\"{%0.3f; %0.3f}\")% %Message%");
- logging::add_common_attributes();
- }
- int main(int, char*[])
- {
- init_logging();
- src::logger lg;
- BOOST_LOG(lg) << logging::add_value("Coordinates", point(10.5f, 20.2f)) << "Hello, world with coordinates!";
- return 0;
- }
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