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authorBrooks Davis <brooks@FreeBSD.org>2013-02-21 21:09:55 +0000
committerBrooks Davis <brooks@FreeBSD.org>2013-02-21 21:09:55 +0000
commite95bfcdd038fc110fa63e283763638d6893568ce (patch)
tree15662090d4746d84a5ae8f9b1df94f8b8a714878 /unvis.c
downloadsrc-e95bfcdd038fc110fa63e283763638d6893568ce.tar.gz
src-e95bfcdd038fc110fa63e283763638d6893568ce.zip
Vendor import of NetBSD's unvis(1) at 2013-02-21vendor/NetBSD/unvis/20130221vendor/NetBSD/unvis
Notes
Notes: svn path=/vendor/NetBSD/unvis/dist/; revision=247131 svn path=/vendor/NetBSD/unvis/20132102/; revision=247132; tag=vendor/NetBSD/unvis/20130221
Diffstat (limited to 'unvis.c')
-rw-r--r--unvis.c138
1 files changed, 138 insertions, 0 deletions
diff --git a/unvis.c b/unvis.c
new file mode 100644
index 000000000000..d854a3731171
--- /dev/null
+++ b/unvis.c
@@ -0,0 +1,138 @@
+/* $NetBSD: unvis.c,v 1.13 2010/11/27 19:46:25 christos Exp $ */
+
+/*-
+ * 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. 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1989, 1993\
+ The Regents of the University of California. All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)unvis.c 8.1 (Berkeley) 6/6/93";
+#endif
+__RCSID("$NetBSD: unvis.c,v 1.13 2010/11/27 19:46:25 christos Exp $");
+#endif /* not lint */
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <vis.h>
+
+static void process(FILE *, const char *, int);
+
+int
+main(int argc, char *argv[])
+{
+ FILE *fp;
+ int ch, eflags = 0;
+
+ setprogname(argv[0]);
+ while ((ch = getopt(argc, argv, "eHhm")) != -1)
+ switch((char)ch) {
+ case 'e':
+ eflags |= VIS_NOESCAPE;
+ break;
+ case 'H':
+ eflags |= VIS_HTTP1866;
+ break;
+ case 'h':
+ eflags |= VIS_HTTP1808;
+ break;
+ case 'm':
+ eflags |= VIS_MIMESTYLE;
+ break;
+ case '?':
+ default:
+ (void)fprintf(stderr,
+ "Usage: %s [-e] [-Hh | -m] [file...]\n",
+ getprogname());
+ return EXIT_FAILURE;
+ }
+ argc -= optind;
+ argv += optind;
+
+ switch (eflags & (VIS_HTTP1808|VIS_HTTP1866|VIS_MIMESTYLE)) {
+ case VIS_HTTP1808|VIS_MIMESTYLE:
+ case VIS_HTTP1866|VIS_MIMESTYLE:
+ case VIS_HTTP1808|VIS_HTTP1866|VIS_MIMESTYLE:
+ errx(EXIT_FAILURE, "Can't mix -m with -h and/or -H");
+ /*NOTREACHED*/
+ default:
+ break;
+ }
+
+ if (*argv)
+ while (*argv) {
+ if ((fp = fopen(*argv, "r")) != NULL)
+ process(fp, *argv, eflags);
+ else
+ warn("%s", *argv);
+ argv++;
+ }
+ else
+ process(stdin, "<stdin>", eflags);
+ return EXIT_SUCCESS;
+}
+
+static void
+process(FILE *fp, const char *filename, int eflags)
+{
+ int offset = 0, c, ret;
+ int state = 0;
+ char outc;
+
+ while ((c = getc(fp)) != EOF) {
+ offset++;
+ again:
+ switch(ret = unvis(&outc, (char)c, &state, eflags)) {
+ case UNVIS_VALID:
+ (void)putchar(outc);
+ break;
+ case UNVIS_VALIDPUSH:
+ (void)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);
+ /* NOTREACHED */
+ }
+ }
+ if (unvis(&outc, (char)0, &state, eflags | UNVIS_END) == UNVIS_VALID)
+ (void)putchar(outc);
+}