initial import of NetBSD tree

1 files changed, 225 insertions, 0 deletions

diff --git a/usr.bin/whatis/whatis.c b/usr.bin/whatis/whatis.c
new file mode 100644
index 00000000000..36e36b8dc5b
--- /dev/null
+++ b/usr.bin/whatis/whatis.c
@@ -0,0 +1,225 @@
+/*
+ * Copyright (c) 1987, 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 char copyright[] =
+"@(#) Copyright (c) 1987, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)whatis.c	8.5 (Berkeley) 11/26/93";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/queue.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../man/config.h"
+#include "../man/pathnames.h"
+
+#define	MAXLINELEN	256			/* max line handled */
+
+static int *found, foundman;
+
+void dashtrunc __P((char *, char *));
+int match __P((char *, char *));
+void usage __P((void));
+void whatis __P((char **, char *, int));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	ENTRY *ep;
+	TAG *tp;
+	int ch, rv;
+	char *beg, *conffile, **p, *p_augment, *p_path;
+
+	conffile = NULL;
+	p_augment = p_path = NULL;
+	while ((ch = getopt(argc, argv, "C:M:m:P:")) != EOF)
+		switch (ch) {
+		case 'C':
+			conffile = optarg;
+			break;
+		case 'M':
+		case 'P':		/* backward compatible */
+			p_path = optarg;
+			break;
+		case 'm':
+			p_augment = optarg;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argv += optind;
+	argc -= optind;
+
+	if (argc < 1)
+		usage();
+
+	if ((found = malloc((u_int)argc * sizeof(int))) == NULL)
+		err(1, NULL);
+	memset(found, 0, argc * sizeof(int));
+
+	for (p = argv; *p; ++p)			/* trim full paths */
+		if (beg = strrchr(*p, '/'))
+			*p = beg + 1;
+
+	if (p_augment)
+		whatis(argv, p_augment, 1);
+	if (p_path || (p_path = getenv("MANPATH")))
+		whatis(argv, p_path, 1);
+	else {
+		config(conffile);
+		ep = (tp = getlist("_whatdb")) == NULL ?
+		   NULL : tp->list.tqh_first;
+		for (; ep != NULL; ep = ep->q.tqe_next)
+			whatis(argv, ep->s, 0);
+	}
+
+	if (!foundman) {
+		fprintf(stderr, "whatis: no %s file found.\n", _PATH_WHATIS);
+		exit(1);
+	}
+	rv = 1;
+	for (p = argv; *p; ++p)
+		if (found[p - argv])
+			rv = 0;
+		else
+			printf("%s: not found\n", *p);
+	exit(rv);
+}
+
+void
+whatis(argv, path, buildpath)
+	char **argv, *path;
+	int buildpath;
+{
+	register char *end, *name, **p;
+	char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1];
+
+	for (name = path; name; name = end) {	/* through name list */
+		if (end = strchr(name, ':'))
+			*end++ = '\0';
+
+		if (buildpath) {
+			char hold[MAXPATHLEN + 1];
+
+			(void)sprintf(hold, "%s/%s", name, _PATH_WHATIS);
+			name = hold;
+		}
+
+		if (!freopen(name, "r", stdin))
+			continue;
+
+		foundman = 1;
+
+		/* for each file found */
+		while (fgets(buf, sizeof(buf), stdin)) {
+			dashtrunc(buf, wbuf);
+			for (p = argv; *p; ++p)
+				if (match(wbuf, *p)) {
+					printf("%s", buf);
+					found[p - argv] = 1;
+
+					/* only print line once */
+					while (*++p)
+						if (match(wbuf, *p))
+							found[p - argv] = 1;
+					break;
+				}
+		}
+	}
+}
+
+/*
+ * match --
+ *	match a full word
+ */
+int
+match(bp, str)
+	register char *bp, *str;
+{
+	register int len;
+	register char *start;
+
+	if (!*str || !*bp)
+		return(0);
+	for (len = strlen(str);;) {
+		for (; *bp && !isdigit(*bp) && !isalpha(*bp); ++bp);
+		if (!*bp)
+			break;
+		for (start = bp++;
+		    *bp && (*bp == '_' || isdigit(*bp) || isalpha(*bp)); ++bp);
+		if (bp - start == len && !strncasecmp(start, str, len))
+			return(1);
+	}
+	return(0);
+}
+
+/*
+ * dashtrunc --
+ *	truncate a string at " - "
+ */
+void
+dashtrunc(from, to)
+	register char *from, *to;
+{
+	register int ch;
+
+	for (; (ch = *from) && ch != '\n' &&
+	    (ch != ' ' || from[1] != '-' || from[2] != ' '); ++from)
+		*to++ = ch;
+	*to = '\0';
+}
+
+/*
+ * usage --
+ *	print usage message and die
+ */
+void
+usage()
+{
+	(void)fprintf(stderr,
+	    "usage: whatis [-C file] [-M path] [-m path] command ...\n");
+	exit(1);
+}