clog is a simplistic logging library written in C.
#include <clog.h>
int main(int argc, char *argv[])
{
clog *logger = clog_open();
clog_add_stream(logger, stderr);
clog_add_path(logger, "example.log");
clog_fatal(logger, "This is a fatal error message.");
clog_error(logger, "This is a regular error message.");
clog_warn(logger, "This is a warning message.");
clog_info(logger, "This is an informative message.");
clog_debug(logger, "This is a debug message.");
clog_close(logger);
return 0;
}
The log level threshold can be configured at compile-time by setting the
CLOG_THRESHOLD preprocessor directive to one of CLOG_LEVEL_DEBUG,
CLOG_LEVEL_INFO, CLOG_LEVEL_WARN, CLOG_LEVEL_ERROR,
CLOG_LEVEL_FATAL or CLOG_LEVEL_OFF (turning off logging
completely) like so:
gcc -DCLOG_THRESHOLD=CLOG_LEVEL_ERROR example.c -o example
This will cause only calls to clog_error and clog_fatal to produce
output, which is also the default if CLOG_THRESHOLD is omitted.
Copyright (c) 2010 Martin Häger
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.