91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/***************************************************************************
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* Copyright (C) 03/2005 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program 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 *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <string.h>
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static FILE *log_fd = NULL;
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/**
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* log_close()
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* schliesst das logfile
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*/
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void log_close() {
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fclose(log_fd);
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}
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/**
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* log_open()
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* oeffnet ein logfile
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* wenn der prozess sich beendet, wird das logfile auch wieder geschlossen
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*
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* @param char *logfile
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*/
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void log_open(char *logfile) {
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if ((log_fd = fopen(logfile, "a" )) == NULL) {
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fprintf(stderr, "log_open(\"%s\"): %s\n", logfile, strerror(errno));
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exit(-1);
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}
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if (atexit(log_close) != 0) {
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fprintf(stderr, "log_open(): atexit(): %s\n", strerror(errno));
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exit(-1);
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}
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}
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/**
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* log_print()
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* schreibt eine Zeile ins Logfile oder auf stderr
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* wenn errno gesetzt ist, wird der error-string mit ausgegeben
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*
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* @param variable parameterlist
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*/
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void log_print(const char *fmt, ...) {
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va_list az;
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char buffer[256];
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va_start(az, fmt);
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vsprintf(buffer, fmt, az);
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va_end(az);
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if (log_fd) {
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time_t tzgr;
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char tbuf[64];
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time(&tzgr);
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strftime(tbuf, 64, "%b %d %H:%M:%S :", localtime(&tzgr));
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if (errno) {
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fprintf(log_fd, "%s %s: %s\n", tbuf, buffer, strerror(errno));
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} else {
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fprintf(log_fd, "%s %s\n", tbuf, buffer);
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}
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} else {
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if (errno) {
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fprintf(stderr, "%s: %s\n", buffer, strerror(errno));
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} else {
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fprintf(stderr, "%s\n", buffer);
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}
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}
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errno = 0;
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fflush(log_fd);
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}
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