HardenedBSD/usr.bin/asa/asa.c

/*	$NetBSD: asa.c,v 1.11 1997/09/20 14:55:00 lukem Exp $	*/

/*
 * Copyright (c) 1993,94 Winning Strategies, Inc.
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Winning Strategies, Inc.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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>
#if 0
#ifndef lint
__RCSID("$NetBSD: asa.c,v 1.11 1997/09/20 14:55:00 lukem Exp $");
#endif
#endif
__FBSDID("$FreeBSD$");

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

static void asa(FILE *);
static void usage(void);

int
main(int argc, char *argv[])
{
	int ch, exval;
	FILE *fp;
	const char *fn;

	while ((ch = getopt(argc, argv, "")) != -1) {
		switch (ch) {
		case '?':
		default:
			usage();
			/*NOTREACHED*/
		}
	}
	argc -= optind;
	argv += optind;

	exval = 0;
	if (argc == 0)
		asa(stdin);
	else {
		while ((fn = *argv++) != NULL) {
                        if ((fp = fopen(fn, "r")) == NULL) {
				warn("%s", fn);
				exval = 1;
				continue;
                        }
			asa(fp);
			fclose(fp);
		}
	}

	exit(exval);
}

static void
usage(void)
{

	fprintf(stderr, "usage: asa [file ...]\n");
	exit(1);
}

static void
asa(FILE *f)
{
	size_t len;
	char *buf;

	if ((buf = fgetln(f, &len)) != NULL) {
		if (buf[len - 1] == '\n')
			buf[--len] = '\0';
		/* special case the first line */
		switch (buf[0]) {
		case '0':
			putchar('\n');
			break;
		case '1':
			putchar('\f');
			break;
		}

		if (len > 1 && buf[0] && buf[1])
			printf("%.*s", (int)(len - 1), buf + 1);

		while ((buf = fgetln(f, &len)) != NULL) {
			if (buf[len - 1] == '\n')
				buf[--len] = '\0';
			switch (buf[0]) {
			default:
			case ' ':
				putchar('\n');
				break;
			case '0':
				putchar('\n');
				putchar('\n');
				break;
			case '1':
				putchar('\f');
				break;
			case '+':
				putchar('\r');
				break;
			}

			if (len > 1 && buf[0] && buf[1])
				printf("%.*s", (int)(len - 1), buf + 1);
		}

		putchar('\n');
	}
}