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/* Auxiliary program to test a DFA code path that cannot be triggered
by grep or gawk.
Copyright 2014-2023 Free Software Foundation, Inc.
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 3, 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 <config.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <regex.h>
#include <dfa.h>
#include <localeinfo.h>
#include "binary-io.h"
_Noreturn void
dfaerror (char const *mesg)
{
printf ("dfaerror: %s\n", mesg);
exit (EXIT_FAILURE);
}
static int exit_status = EXIT_SUCCESS;
void
dfawarn (char const *mesg)
{
printf ("dfawarn: %s\n", mesg);
exit_status = EXIT_FAILURE;
}
int
main (int argc, char **argv)
{
struct dfa *dfa;
char *beg, *end, *p;
int allow_nl;
struct localeinfo localeinfo;
if (argc < 3)
exit (EXIT_FAILURE);
/* This test's fixture needs to compare this program's output with an expected
output. On native Windows, the CR-LF newlines would cause this comparison
to fail. But we don't want to postprocess this program's output. */
set_binary_mode (STDOUT_FILENO, O_BINARY);
setlocale (LC_ALL, "");
init_localeinfo (&localeinfo);
dfa = dfaalloc ();
dfasyntax (dfa, &localeinfo, RE_SYNTAX_EGREP | RE_NO_EMPTY_RANGES, 0);
dfacomp (argv[1], strlen (argv[1]), dfa, 0);
beg = argv[2];
end = argv[2] + strlen (argv[2]);
allow_nl = argc > 3 && atoi (argv[3]);
p = dfaexec (dfa, beg, end, allow_nl, NULL, NULL);
if (p != NULL)
printf ("%zd\n", p - beg);
exit (exit_status);
}
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