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/*
* msg.c - routines for error messages.
*/
/*
* Copyright (C) 1986, 1988, 1989, 1991-2001, 2003, 2010
* the Free Software Foundation, Inc.
*
* This file is part of GAWK, the GNU implementation of the
* AWK Programming Language.
*
* GAWK 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, or (at your option)
* any later version.
*
* GAWK 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 "awk.h"
extern FILE *output_fp;
int sourceline = 0;
char *source = NULL;
static const char *srcfile = NULL;
static int srcline;
jmp_buf fatal_tag;
int fatal_tag_valid = FALSE;
/* err --- print an error message with source line and file and record */
/* VARARGS2 */
void
err(const char *s, const char *emsg, va_list argp)
{
char *file;
const char *me;
(void) fflush(output_fp);
me = myname;
if (STREQN(me, "dgawk", 5))
me = &myname[1];
(void) fprintf(stderr, "%s: ", me);
#ifdef GAWKDEBUG
if (srcfile != NULL) {
fprintf(stderr, "%s:%d:", srcfile, srcline);
srcfile = NULL;
}
#endif /* GAWKDEBUG */
if (sourceline > 0) {
if (source != NULL)
(void) fprintf(stderr, "%s:", source);
else
(void) fprintf(stderr, _("cmd. line:"));
(void) fprintf(stderr, "%d: ", sourceline);
}
if (FNR > 0) {
file = FILENAME_node->var_value->stptr;
(void) putc('(', stderr);
if (file)
(void) fprintf(stderr, "FILENAME=%s ", file);
(void) fprintf(stderr, "FNR=%ld) ", FNR);
}
(void) fprintf(stderr, "%s", s);
vfprintf(stderr, emsg, argp);
(void) fprintf(stderr, "\n");
(void) fflush(stderr);
}
/* msg --- take a varargs error message and print it */
void
msg(const char *mesg, ...)
{
va_list args;
va_start(args, mesg);
err("", mesg, args);
va_end(args);
}
/* warning --- print a warning message */
void
warning(const char *mesg, ...)
{
va_list args;
va_start(args, mesg);
err(_("warning: "), mesg, args);
va_end(args);
}
void
error(const char *mesg, ...)
{
va_list args;
va_start(args, mesg);
err(_("error: "), mesg, args);
va_end(args);
}
/* set_loc --- set location where a fatal error happened */
void
set_loc(const char *file, int line)
{
srcfile = file;
srcline = line;
/* This stupid line keeps some compilers happy: */
file = srcfile; line = srcline;
}
/* r_fatal --- print a fatal error message */
void
r_fatal(const char *mesg, ...)
{
va_list args;
va_start(args, mesg);
err(_("fatal: "), mesg, args);
va_end(args);
#ifdef GAWKDEBUG
abort();
#endif
gawk_exit(EXIT_FATAL);
}
/* gawk_exit --- longjmp out if necessary */
void
gawk_exit(int status)
{
if (fatal_tag_valid) {
exit_val = status;
longjmp(fatal_tag, 1);
}
exit(status);
}
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