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- /*-
- * Copyright (c) 1989 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
- char copyright[] =
- "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)unvis.c 5.1 (Berkeley) 6/1/90";
- #endif /* not lint */
-
- #include <stdio.h>
- #include <vis.h>
-
- char *Program;
- #define usage() fprintf(stderr, "usage: %s %s\n", Program, USAGE)
- #define USAGE "[file...]"
-
- main(argc, argv)
- char *argv[];
- {
- FILE *fp;
- extern char *optarg;
- extern int optind;
- int ch;
-
- Program = argv[0];
- while ((ch = getopt(argc, argv, "")) != EOF)
- switch((char)ch) {
- case '?':
- default:
- usage();
- exit(1);
- }
- argc -= optind;
- argv += optind;
-
- if (*argv)
- while (*argv) {
- if ((fp=fopen(*argv, "r")) != NULL)
- process(fp, *argv);
- else
- syserror("%s", *argv);
- argv++;
- }
- else
- process(stdin, "<stdin>");
- exit(0);
- }
-
- process(fp, filename)
- FILE *fp;
- char *filename;
- {
- register 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:
- error("%s: offset: %d: can't decode", filename, offset);
- state = 0;
- break;
- case 0:
- case UNVIS_NOCHAR:
- break;
- default:
- error("bad return value (%d), can't happen", ret);
- exit(1);
- }
- }
- if (unvis(&outc, (char)0, &state, UNVIS_END) == UNVIS_VALID)
- putchar(outc);
- }
-
- #include <varargs.h>
-
- error(va_alist)
- va_dcl
- {
- char *fmt;
- va_list ap;
- extern errno;
-
- fprintf(stderr, "%s: ", Program);
- va_start(ap);
- fmt = va_arg(ap, char *);
- (void) vfprintf(stderr, fmt, ap);
- va_end(ap);
- fprintf(stderr, "\n");
- }
-
- syserror(va_alist)
- va_dcl
- {
- char *fmt;
- va_list ap;
- extern errno;
-
- fprintf(stderr, "%s: ", Program);
- va_start(ap);
- fmt = va_arg(ap, char *);
- (void) vfprintf(stderr, fmt, ap);
- va_end(ap);
- fprintf(stderr, ": %s\n", strerror(errno));
- }
-