163 lines
3.8 KiB
C++
163 lines
3.8 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2011 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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// mapnik
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#include <mapnik/debug.hpp>
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// stl
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#include <ctime>
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#ifndef MAPNIK_LOG_FORMAT
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#define MAPNIK_LOG_FORMAT Mapnik LOG> %Y-%m-%d %H:%M:%S:
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#endif
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#ifndef MAPNIK_DEFAULT_LOG_SEVERITY
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#ifdef MAPNIK_DEBUG
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#define MAPNIK_DEFAULT_LOG_SEVERITY 0
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#else
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#define MAPNIK_DEFAULT_LOG_SEVERITY 2
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#endif
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#endif
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namespace mapnik {
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// mutexes
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#ifdef MAPNIK_THREADSAFE
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boost::mutex logger::severity_mutex_;
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boost::mutex logger::format_mutex_;
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#endif
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// first time checks
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bool logger::severity_env_check_ = true;
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bool logger::format_env_check_ = true;
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// severity
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logger::severity_type logger::severity_level_ =
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#if MAPNIK_DEFAULT_LOG_SEVERITY == 0
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logger::debug
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#elif MAPNIK_DEFAULT_LOG_SEVERITY == 1
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logger::warn
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#elif MAPNIK_DEFAULT_LOG_SEVERITY == 2
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logger::error
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#elif MAPNIK_DEFAULT_LOG_SEVERITY == 3
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logger::none
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#else
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#error "Wrong default log severity level specified!"
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#endif
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;
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logger::severity_map logger::object_severity_level_ = logger::severity_map();
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// format
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#define __xstr__(s) __str__(s)
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#define __str__(s) #s
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std::string logger::format_ = __xstr__(MAPNIK_LOG_FORMAT);
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#undef __xstr__
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#undef __str__
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std::string logger::str()
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{
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#if 0
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// update the format from getenv if this is the first time
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if (logger::format_env_check_)
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{
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logger::format_env_check_ = false;
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const char* log_format = getenv("MAPNIK_LOG_FORMAT");
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if (log_format != NULL)
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{
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logger::format_ = log_format;
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}
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}
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#endif
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char buf[256];
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const time_t tm = time(0);
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strftime(buf, sizeof(buf), logger::format_.c_str(), localtime(&tm));
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return buf;
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}
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// output
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std::ofstream logger::file_output_;
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std::string logger::file_name_;
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std::streambuf* logger::saved_buf_ = 0;
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void logger::use_file(std::string const& filepath)
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{
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// save clog rdbuf
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if (saved_buf_ == 0)
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{
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saved_buf_ = std::clog.rdbuf();
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}
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// use a file to output as clog rdbuf
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if (file_name_ != filepath)
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{
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file_name_ = filepath;
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if (file_output_.is_open())
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{
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file_output_.close();
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}
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file_output_.open(file_name_.c_str(), std::ios::out | std::ios::app);
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if (file_output_)
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{
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std::clog.rdbuf(file_output_.rdbuf());
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}
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else
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{
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std::stringstream s;
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s << "cannot redirect log to file " << file_output_;
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throw std::runtime_error(s.str());
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}
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}
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}
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void logger::use_console()
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{
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// save clog rdbuf
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if (saved_buf_ == 0)
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{
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saved_buf_ = std::clog.rdbuf();
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}
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// close the file to force a flush
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if (file_output_.is_open())
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{
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file_output_.close();
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}
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std::clog.rdbuf(saved_buf_);
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}
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} // namespace mapnik
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