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/*
* msg.c - routines for error messages.
*/
/*
* Copyright (C) 1986, 1988, 1989, 1991-2001, 2003, 2010-2013, 2017-2019,
* 2021, 2022, 2023,
* 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 3, 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 = 0;
/* err --- print an error message with source line and file and record */
/* VARARGS2 */
void
err(bool isfatal, const char *s, const char *emsg, va_list argp)
{
char *file;
const char *me;
static bool first = true;
static bool add_src_info = false;
static long lineno_val = 0; // Easter Egg
if (first) {
first = false;
add_src_info = (getenv("GAWK_MSG_SRC") != NULL);
if (! do_traditional) {
NODE *n = lookup("LINENO");
if (n != NULL && n->type == Node_var)
lineno_val = get_number_d(n->var_value);
}
}
(void) fflush(output_fp);
me = myname;
(void) fprintf(stderr, "%s: ", me);
if (srcfile != NULL && add_src_info) {
fprintf(stderr, "%s:%d:", srcfile, srcline);
srcfile = NULL;
}
if (sourceline > 0) {
if (source != NULL)
(void) fprintf(stderr, "%s:", source);
else
(void) fprintf(stderr, _("cmd. line:"));
(void) fprintf(stderr, "%ld: ", sourceline + lineno_val);
}
#ifdef HAVE_MPFR
if (FNR_node && FNR_node->var_value && is_mpg_number(FNR_node->var_value)) {
NODE *val;
val = mpg_update_var(FNR_node);
assert((val->flags & MPZN) != 0);
if (mpz_sgn(val->mpg_i) > 0) {
int len = FILENAME_node->var_value->stlen;
file = FILENAME_node->var_value->stptr;
(void) putc('(', stderr);
if (file)
(void) fprintf(stderr, "FILENAME=%.*s ", len, file);
(void) mpfr_fprintf(stderr, "FNR=%Zd) ", val->mpg_i);
}
} else
#endif
if (FNR > 0) {
int len = FILENAME_node->var_value->stlen;
file = FILENAME_node->var_value->stptr;
(void) putc('(', stderr);
if (file)
(void) fprintf(stderr, "FILENAME=%.*s ", len, file);
(void) fprintf(stderr, "FNR=%ld) ", FNR);
}
(void) fprintf(stderr, "%s", s);
vfprintf(stderr, emsg, argp);
(void) fprintf(stderr, "\n");
(void) fflush(stderr);
if (isfatal)
gawk_exit(EXIT_FATAL);
}
/* msg --- take a varargs error message and print it */
void
msg(const char *mesg, ...)
{
va_list args;
va_start(args, mesg);
err(false, "", mesg, args);
va_end(args);
}
/* r_warning --- print a warning message */
void
r_warning(const char *mesg, ...)
{
va_list args;
va_start(args, mesg);
err(false, _("warning: "), mesg, args);
va_end(args);
}
void
error(const char *mesg, ...)
{
va_list args;
va_start(args, mesg);
err(false, _("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(true, _("fatal: "), mesg, args);
va_end(args);
}
/* gawk_exit --- longjmp out if necessary */
void
gawk_exit(int status)
{
if (fatal_tag_valid) {
exit_val = status;
longjmp(fatal_tag, 1);
}
final_exit(status);
}
/* final_exit --- run extension exit handlers and exit */
void
final_exit(int status)
{
/* run any extension exit handlers */
run_ext_exit_handlers(status);
/* we could close_io() here */
close_extensions();
exit(status);
}
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