netsurf/utils/log.h
2012-11-05 15:49:23 +00:00

79 lines
2.1 KiB
C

/*
* Copyright 2003 James Bursa <bursa@users.sourceforge.net>
* Copyright 2004 John Tytgat <joty@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _NETSURF_LOG_H_
#define _NETSURF_LOG_H_
#include <stdio.h>
#include "desktop/netsurf.h"
#include "utils/errors.h"
/**
* Ensures the FILE handle is available to write logging to.
*
* This is provided by the frontends if required
*/
typedef bool(nslog_ensure_t)(FILE *fptr);
/**
* Initialise the logging system.
*
* Sets up everything required for logging. Processes the argv passed
* to remove the -v switch for verbose logging. If necessary ensures
* the output file handle is available.
*/
extern nserror nslog_init(nslog_ensure_t *ensure, int *pargc, char **argv);
#ifdef NDEBUG
# define LOG(x) ((void) 0)
#else
/**
* Obtain a formatted string suitable for prepending to a log message
*
* \return formatted string of the time since first log call
*/
extern const char *nslog_gettime(void);
extern void nslog_log(const char *format, ...);
# ifdef __GNUC__
# define LOG_FN __PRETTY_FUNCTION__
# define LOG_LN __LINE__
# elif defined(__CC_NORCROFT)
# define LOG_FN __func__
# define LOG_LN __LINE__
# else
# define LOG_FN ""
# define LOG_LN __LINE__
# endif
#define LOG(x) \
do { \
if (verbose_log) { \
nslog_log("%s " __FILE__ " %s %i: ", \
nslog_gettime(), LOG_FN, LOG_LN); \
nslog_log x; \
nslog_log("\n"); \
} \
} while(0)
#endif
#endif