131 lines
3.6 KiB
C++
131 lines
3.6 KiB
C++
/***********************************************************************
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* Software License Agreement (BSD License)
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*
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* Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
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* Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
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*
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* THE BSD LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*************************************************************************/
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#ifndef OPENCV_FLANN_LOGGER_H
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#define OPENCV_FLANN_LOGGER_H
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#include <stdio.h>
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#include <stdarg.h>
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#include "defines.h"
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namespace cvflann
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{
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class Logger
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{
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Logger() : stream(stdout), logLevel(FLANN_LOG_WARN) {}
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~Logger()
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{
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if ((stream!=NULL)&&(stream!=stdout)) {
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fclose(stream);
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}
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}
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static Logger& instance()
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{
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static Logger logger;
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return logger;
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}
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void _setDestination(const char* name)
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{
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if (name==NULL) {
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stream = stdout;
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}
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else {
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stream = fopen(name,"w");
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if (stream == NULL) {
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stream = stdout;
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}
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}
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}
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int _log(int level, const char* fmt, va_list arglist)
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{
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if (level > logLevel ) return -1;
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int ret = vfprintf(stream, fmt, arglist);
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return ret;
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}
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public:
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/**
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* Sets the logging level. All messages with lower priority will be ignored.
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* @param level Logging level
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*/
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static void setLevel(int level) { instance().logLevel = level; }
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/**
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* Sets the logging destination
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* @param name Filename or NULL for console
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*/
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static void setDestination(const char* name) { instance()._setDestination(name); }
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/**
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* Print log message
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* @param level Log level
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* @param fmt Message format
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* @return
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*/
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static int log(int level, const char* fmt, ...)
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{
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va_list arglist;
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va_start(arglist, fmt);
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int ret = instance()._log(level,fmt,arglist);
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va_end(arglist);
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return ret;
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}
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#define LOG_METHOD(NAME,LEVEL) \
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static int NAME(const char* fmt, ...) \
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{ \
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va_list ap; \
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va_start(ap, fmt); \
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int ret = instance()._log(LEVEL, fmt, ap); \
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va_end(ap); \
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return ret; \
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}
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LOG_METHOD(fatal, FLANN_LOG_FATAL)
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LOG_METHOD(error, FLANN_LOG_ERROR)
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LOG_METHOD(warn, FLANN_LOG_WARN)
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LOG_METHOD(info, FLANN_LOG_INFO)
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private:
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FILE* stream;
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int logLevel;
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};
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}
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#endif //OPENCV_FLANN_LOGGER_H
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