/* -*- c-*- */

/*
  GlossTeX, a tool for the automatic preparation of glossaries.
  Copyright (C) 1997 Volkan Yavuz

  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., 675 Mass Ave, Cambridge, MA 02139, USA.

  Volkan Yavuz, [email protected]
*/

/* $Id: error.c,v 1.16 1997/12/24 18:09:18 volkan Exp $ */

#include "glosstex.h"
#include "error.h"
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>

#define BUFSIZE 4096

extern char* sys_errlist[];

void
error (const char *fmt,...)
{
 char buf[BUFSIZE];
 int errno_save = errno;

 va_list ap;
 va_start (ap, fmt);

 sprintf (buf, "\n%s: ", progname);
 (void) vsprintf (buf + strlen (buf), fmt, ap);

#if _HAVE_STRERROR_
 sprintf (buf + strlen (buf), ": %s\n", strerror (errno_save));
#else
 sprintf (buf + strlen (buf), ": %s\n", sys_errlist[errno_save]);
#endif

 (void) fflush (stdout);
 (void) fputs (buf, stderr);

#if _HAVE_ANSI_C_FFLUSH_
 (void) fflush (0);            /* flush all streams */
#else
 (void) fflush (stdout);
 (void) fflush (stderr);
#endif

 va_end (ap);
}

void
printlog (enum e_loglevel level, int output_to, const char *fmt,...)
{
 va_list ap;
 va_start (ap, fmt);

 if ((level <= loglevel) && (output_to & STDOUT))
   (void) vfprintf (stdout, fmt, ap);

 if ((level <= loglevel + 1) && (output_to & LOGFILE))
   (void) vfprintf (logfile, fmt, ap);
}