115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/*
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* This file is part of libbluray
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* Copyright (C) 2009-2010 Obliter0n
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* Copyright (C) 2009-2010 John Stebbins
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "logging.h"
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#include "file/file.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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uint32_t debug_mask = (uint32_t)-1; /* set all bits to make sure bd_debug() is called for initialization */
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static BD_LOG_FUNC log_func = NULL;
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void bd_set_debug_handler(BD_LOG_FUNC f)
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{
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log_func = f;
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}
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void bd_set_debug_mask(uint32_t mask)
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{
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debug_mask = mask;
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}
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uint32_t bd_get_debug_mask(void)
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{
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return debug_mask;
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}
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void bd_debug(const char *file, int line, uint32_t mask, const char *format, ...)
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{
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static int debug_init = 0;
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static FILE *logfile = NULL;
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// Only call getenv() once.
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if (!debug_init) {
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debug_init = 1;
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logfile = stderr;
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char *env = NULL;
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if (debug_mask == (uint32_t)-1) {
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/* might be set by application with bd_set_debug_mask() */
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debug_mask = DBG_CRIT;
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}
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if ((env = getenv("BD_DEBUG_MASK")))
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debug_mask = strtol(env, NULL, 0);
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// Send DEBUG to file?
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if ((env = getenv("BD_DEBUG_FILE"))) {
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FILE *fp = fopen(env, "wb");
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if (fp) {
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logfile = fp;
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setvbuf(logfile, NULL, _IONBF, 0);
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} else {
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fprintf(logfile, "%s:%d: Error opening log file %s\n", __FILE__, __LINE__, env);
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}
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}
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}
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if (mask & debug_mask) {
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const char *f = strrchr(file, DIR_SEP_CHAR);
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char buffer[4096];
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va_list args;
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int len, len2;
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len = sprintf(buffer, "%s:%d: ", f ? f + 1 : file, line);
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if (len < 0) {
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return;
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}
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va_start(args, format);
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len2 = vsnprintf(buffer + len, sizeof(buffer) - len - 1, format, args);
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va_end(args);
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if (len2 < 0) {
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return;
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}
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if (log_func) {
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buffer[sizeof(buffer)-1] = 0;
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log_func(buffer);
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} else {
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len += len2;
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if ((size_t)len >= sizeof(buffer)) {
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len = sizeof(buffer);
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}
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fwrite(buffer, len, 1, logfile);
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}
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}
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}
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