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/* log.c -- Error and warning messages.
*
* Copyright (C) 2016 Tomasz Kramkowski <tk@the-tk.com>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "log.h"
const char *argv0;
void error(int errnum, const char *fmt, ...)
{
assert(fmt);
va_list va;
fprintf(stderr, "%s: error: ", argv0);
va_start(va, fmt);
vfprintf(stderr, fmt, va);
va_end(va);
if (errnum)
fprintf(stderr, ": %s", strerror(errnum));
fputc('\n', stderr);
exit(EXIT_FAILURE);
}
void errorat(int errnum, const char *file, long line, const char *fmt, ...)
{
assert(file && fmt);
va_list va;
fprintf(stderr, "%s:%s:%ld: error: ", argv0, file, line);
va_start(va, fmt);
vfprintf(stderr, fmt, va);
va_end(va);
if (errnum)
fprintf(stderr, ": %s", strerror(errnum));
fputc('\n', stderr);
exit(EXIT_FAILURE);
}
void warning(int errnum, const char *fmt, ...)
{
va_list ap;
fprintf(stderr, "%s: warning: ", argv0);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
if (errnum)
fprintf(stderr, ": %s", strerror(errnum));
fputc('\n', stderr);
}
void warningat(int errnum, const char *file, long line, const char *fmt, ...)
{
va_list ap;
fprintf(stderr, "%s:%s:%ld: warning: ", argv0, file, line);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
if (errnum)
fprintf(stderr, ": %s", strerror(errnum));
fputc('\n', stderr);
}
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