GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/unvis/unvis.c Lines: 0 33 0.0 %
Date: 2017-11-13 Branches: 0 32 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: unvis.c,v 1.14 2015/10/09 01:37:09 deraadt Exp $	*/
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/*-
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 * Copyright (c) 1989, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <vis.h>
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void process(FILE *fp, const char *filename);
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int
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main(int argc, char *argv[])
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{
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	FILE *fp;
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	int ch;
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	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
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		err(1, "pledge");
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	while ((ch = getopt(argc, argv, "")) != -1)
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		switch(ch) {
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		case '?':
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		default:
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			(void) fprintf(stderr, "usage: unvis [file ...]\n");
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			exit(1);
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		}
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	argc -= optind;
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	argv += optind;
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	if (*argv)
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		while (*argv) {
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			if ((fp=fopen(*argv, "r")) != NULL) {
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				process(fp, *argv);
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				fclose(fp);
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			} else
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				warn("%s", *argv);
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			argv++;
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		}
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	else {
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		if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
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			err(1, "pledge");
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		process(stdin, "<stdin>");
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	}
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	exit(0);
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}
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void
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process(FILE *fp, const char *filename)
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{
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	int offset = 0, c, ret;
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	int state = 0;
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	char outc;
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	while ((c = getc(fp)) != EOF) {
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		offset++;
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	again:
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		switch(ret = unvis(&outc, (char)c, &state, 0)) {
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		case UNVIS_VALID:
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			putchar(outc);
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			break;
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		case UNVIS_VALIDPUSH:
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			putchar(outc);
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			goto again;
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		case UNVIS_SYNBAD:
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			warnx("%s: offset: %d: can't decode", filename, offset);
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			state = 0;
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			break;
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		case 0:
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		case UNVIS_NOCHAR:
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			break;
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		default:
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			errx(1, "bad return value (%d), can't happen", ret);
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			/* NOTREACHED */
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		}
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	}
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	if (unvis(&outc, (char)0, &state, UNVIS_END) == UNVIS_VALID)
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		putchar(outc);
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}