/* as.c
 *
 *   Copyright (C) 2018-2019  Henrik Hautakoski <henrik@fiktivkod.org>
 *
 *   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., 51 Franklin Street, Fifth Floor, Boston,
 *   MA 02110-1301, USA.
 */
#include <stdio.h>
#include <stdlib.h>
#include "parser.h"

int usage(char *program) {

	fprintf(stderr, "Usage: %s <inputfile> [ <outputfile ]\n", program);
	return -1;
}

int main(int argc, char **argv) {

	FILE *fd_in;
	FILE *fd_out = stdout;

	if (argc < 2)
		return usage(argv[0]);

	fd_in = fopen(argv[1], "r");
	if (fd_in == NULL) {
		perror("Could not open input file");
		return -1;
	}


	// If we have a output file.
	if (argc > 2) {
		fd_out = fopen(argv[2], "w");
		if (fd_out == NULL) {
			perror("Could not open output file");
			fclose(fd_in);
			return -1;
		}
	}

	parse(fd_in, fd_out);

	fclose(fd_in);
	if (fd_out != stdout)
		fclose(fd_out);
	return 0;
}