mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-29 12:03:03 +00:00
f4ac32def2
Add some constness to avoid some warnings. Remove use register keyword. Deal with missing/unneeded extern/prototypes. Some minor type changes/casts to avoid warnings. Reviewed by: md5
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. 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 the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1989, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)unvis.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <vis.h>
|
|
|
|
void process(FILE *, const char *);
|
|
static void usage(void);
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
FILE *fp;
|
|
int ch;
|
|
|
|
while ((ch = getopt(argc, argv, "")) != -1)
|
|
switch((char)ch) {
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (*argv)
|
|
while (*argv) {
|
|
if ((fp=fopen(*argv, "r")) != NULL)
|
|
process(fp, *argv);
|
|
else
|
|
warn("%s", *argv);
|
|
argv++;
|
|
}
|
|
else
|
|
process(stdin, "<stdin>");
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: unvis [file ...]\n");
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
process(FILE *fp, const char *filename)
|
|
{
|
|
int offset = 0, c, ret;
|
|
int state = 0;
|
|
char outc;
|
|
|
|
while ((c = getc(fp)) != EOF) {
|
|
offset++;
|
|
again:
|
|
switch(ret = unvis(&outc, (char)c, &state, 0)) {
|
|
case UNVIS_VALID:
|
|
putchar(outc);
|
|
break;
|
|
case UNVIS_VALIDPUSH:
|
|
putchar(outc);
|
|
goto again;
|
|
case UNVIS_SYNBAD:
|
|
warnx("%s: offset: %d: can't decode", filename, offset);
|
|
state = 0;
|
|
break;
|
|
case 0:
|
|
case UNVIS_NOCHAR:
|
|
break;
|
|
default:
|
|
errx(1, "bad return value (%d), can't happen", ret);
|
|
}
|
|
}
|
|
if (unvis(&outc, (char)0, &state, UNVIS_END) == UNVIS_VALID)
|
|
putchar(outc);
|
|
}
|