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/*
This file is part of libextractor.
Copyright (C) 2012 Vidyut Samanta and Christian Grothoff
libextractor is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
libextractor is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with libextractor; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file main/extractor_logging.h
* @brief logging API for GNU libextractor
* @author Christian Grothoff
*/
#ifndef EXTRACTOR_LOGGING_H
#define EXTRACTOR_LOGGING_H
#define DEBUG 0
#if DEBUG
/**
* Log function.
*
* @param file name of file with the error
* @param line line number with the error
* @param ... log message and arguments
*/
void
EXTRACTOR_log_ (const char *file, int line, const char *format, ...);
/**
* Log a message.
*
* @param ... format string and arguments for fmt (printf-style)
*/
#define LOG(...) EXTRACTOR_log_(__FILE__, __LINE__, __VA_ARGS__)
#else
/**
* Log a message.
*
* @param ... format string and arguments for fmt (printf-style)
*/
#define LOG(...)
#endif
/**
* Log an error message about a failed system/libc call
* using an error message based on 'errno'.
*
* @param syscall name of the syscall that failed
*/
#define LOG_STRERROR(syscall) LOG("System call `%s' failed: %s\n", syscall, STRERROR (errno))
/**
* Log an error message about a failed system/libc call
* involving a file using an error message based on 'errno'.
*
* @param syscall name of the syscall that failed
* @param filename name of the file that was involved
*/
#define LOG_STRERROR_FILE(syscall,filename) LOG("System call `%s' failed for file `%s': %s\n", syscall, filename, STRERROR (errno))
/**
* Abort the program reporting an assertion failure
*
* @param file filename with the failure
* @param line line number with the failure
*/
void
EXTRACTOR_abort_ (const char *file,
int line);
/**
* Abort program if assertion fails.
*
* @param cond assertion that must hold.
*/
#define ASSERT(cond) do { if (! (cond)) EXTRACTOR_abort_ (__FILE__, __LINE__); } while (0)
#endif
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