#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <f65.h>
#include "unalf.h"

FILE *in_file, *out_file;
char *in_filename, *self;

static void usage(void) {
	printf("usage: %s [-l] file.alf\n", self);
	exit(1);
}

static void set_self(char *argv0) {
	char *p;

	self = argv0;
	p = strrchr(self, '/');
	if(p) self = p + 1;
}

int main(int argc, char **argv) {
	char opt = 0;
	int listonly = 0;

	set_self(argv[0]);

	if(argc == 1) {
		fprintf(stderr, "%s: missing required argument(s)\n", self);
		usage();
	} else if(argc > 3) {
		fprintf(stderr, "%s: too many arguments\n", self);
		usage();
	} else if(argc == 2) {
		in_filename = argv[1];
	} else { /* argc == 3 */
		in_filename = argv[2];
		if(argv[1][0] == '-')
			opt = argv[1][1];
		else
			opt = argv[1][0];
		if(opt == 'l' || opt == 'v') {
			listonly = 1;
		} else if(opt == 'x' || opt == 'e') {
			/* NOP */
		} else {
			fprintf(stderr, "%s: unknown option '-%c'\n", self, opt);
			usage();
		}
	}

	if(!(in_file = fopen(in_filename, "rb"))) {
		fprintf(stderr, "%s: ", self);
		perror(in_filename);
		exit(1);
	}

	if(listonly)
		list_alf();
	else
		extract_alf();

	exit(0);
}