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netsurf/utils/log.h

126 lines
3.3 KiB

/*
* 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 <stdbool.h>
#include "utils/errors.h"
extern bool verbose_log;
/**
* 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);
/**
* Shut down the logging system.
*
* Shuts down the logging subsystem, resetting to verbose logging and output
* to stderr. Note, if logging is done after calling this, it will be sent
* to stderr without filtering.
*/
extern void nslog_finalise(void);
/**
* Set the logging filter.
*
* Compiles and enables the given logging filter.
*/
extern nserror nslog_set_filter(const char *filter);
/**
* Set the logging filter according to the options.
*/
extern nserror nslog_set_filter_by_options(void);
/* ensure a logging level is defined */
#ifndef NETSURF_LOG_LEVEL
#define NETSURF_LOG_LEVEL INFO
#endif
#define NSLOG_LVL(level) NSLOG_LEVEL_ ## level
#define NSLOG_EVL(level) NSLOG_LVL(level)
#define NSLOG_COMPILED_MIN_LEVEL NSLOG_EVL(NETSURF_LOG_LEVEL)
#ifdef WITH_NSLOG
#include <nslog/nslog.h>
NSLOG_DECLARE_CATEGORY(netsurf);
NSLOG_DECLARE_CATEGORY(llcache);
NSLOG_DECLARE_CATEGORY(fetch);
NSLOG_DECLARE_CATEGORY(plot);
NSLOG_DECLARE_CATEGORY(schedule);
NSLOG_DECLARE_CATEGORY(fbtk);
NSLOG_DECLARE_CATEGORY(layout);
NSLOG_DECLARE_CATEGORY(flex);
NSLOG_DECLARE_CATEGORY(dukky);
NSLOG_DECLARE_CATEGORY(jserrors);
#else /* WITH_NSLOG */
enum nslog_level {
NSLOG_LEVEL_DEEPDEBUG = 0,
NSLOG_LEVEL_DEBUG = 1,
NSLOG_LEVEL_VERBOSE = 2,
NSLOG_LEVEL_INFO = 3,
NSLOG_LEVEL_WARNING = 4,
NSLOG_LEVEL_ERROR = 5,
NSLOG_LEVEL_CRITICAL = 6
};
extern void nslog_log(const char *file, const char *func, int ln, const char *format, ...) __attribute__ ((format (printf, 4, 5)));
# 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 NSLOG(catname, level, logmsg, args...) \
do { \
if (NSLOG_LEVEL_##level >= NSLOG_COMPILED_MIN_LEVEL) { \
nslog_log(__FILE__, LOG_FN, LOG_LN, logmsg , ##args); \
} \
} while(0)
#endif /* WITH_NSLOG */
#endif