/*-
 * Copyright (C) 2011 Gabor Kovesdan <gabor@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>

#include "config.h"
#include "tre-heuristic.h"
#include "tre-internal.h"

static inline void
usage(void)
{

	printf("Usage: %s [-E]\n", getprogname());
	exit(EXIT_FAILURE);
}

int
main(int argc, char *argv[])
{
	heur_t h;
	wchar_t *pat;
	size_t siz;
	int cflags, ret;

	while ((ret = getopt(argc, argv, "E")) != -1)
		switch(ret) {
		case 'E':
			cflags |= REG_EXTENDED;
			break;
		default:
			usage();
		}

	if (argc != 2)
		usage();
	printf("Input pattern: %s\n", argv[1]);
	siz = strlen(argv[1]);
	pat = malloc(sizeof(wint_t) * (siz + 1));
	if (pat == NULL)
		return (EXIT_FAILURE);
	siz = mbstowcs(pat, argv[1], siz);

	ret = tre_compile_heur(&h, pat, siz, 0);
	if (ret != 0) {
		printf("No heuristic available.\n");
		exit (EXIT_SUCCESS);
	}

	printf("%s\n", h.prefix ? "Prefix heuristic" : "Normal heuristic");
	printf("Start heuristic: %s\n", h.start->pattern);
	if (!h.prefix)
		printf("End heuristic: %s\n", h.end->pattern);

	return (EXIT_SUCCESS);
}