File: [local] / src / usr.bin / apropos / Attic / apropos.c (download)
Revision 1.10, Tue Jun 10 22:20:44 2003 UTC (21 years ago) by deraadt
Branch: MAIN
CVS Tags: OPENBSD_3_8_BASE, OPENBSD_3_8, OPENBSD_3_7_BASE, OPENBSD_3_7, OPENBSD_3_6_BASE, OPENBSD_3_6, OPENBSD_3_5_BASE, OPENBSD_3_5, OPENBSD_3_4_BASE, OPENBSD_3_4 Changes since 1.9: +7 -13 lines
mostly ansi cleanup; pval ok
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/* $OpenBSD: apropos.c,v 1.10 2003/06/10 22:20:44 deraadt Exp $ */
/* $NetBSD: apropos.c,v 1.5 1995/09/04 20:46:20 tls Exp $ */
/*
* Copyright (c) 1987, 1993, 1994
* 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.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1987, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)apropos.c 8.8 (Berkeley) 5/4/95";
#else
static char rcsid[] = "$OpenBSD: apropos.c,v 1.10 2003/06/10 22:20:44 deraadt Exp $";
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/queue.h>
#include <ctype.h>
#include <err.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "../man/config.h"
#include "../man/pathnames.h"
static int *found, foundman;
#define MAXLINELEN 8192 /* max line handled */
void apropos(char **, char *, int);
void lowstr(char *, char *);
int match(char *, char *);
void usage(void);
int
main(int argc, char *argv[])
{
ENTRY *ep;
TAG *tp;
int ch, rv;
char *conffile, **p, *p_augment, *p_path;
conffile = NULL;
p_augment = p_path = NULL;
while ((ch = getopt(argc, argv, "C:M:m:P:")) != -1)
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) /* convert to lower-case */
lowstr(*p, *p);
if (p_augment)
apropos(argv, p_augment, 1);
if (p_path || (p_path = getenv("MANPATH")))
apropos(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)
apropos(argv, ep->s, 0);
}
if (!foundman)
errx(1, "no %s file found", _PATH_WHATIS);
rv = 1;
for (p = argv; *p; ++p)
if (found[p - argv])
rv = 0;
else
(void)printf("%s: nothing appropriate\n", *p);
exit(rv);
}
void
apropos(char **argv, char *path, int buildpath)
{
char *end, *name, **p;
char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1];
char hold[MAXPATHLEN];
for (name = path; name; name = end) { /* through name list */
if ((end = strchr(name, ':')))
*end++ = '\0';
if (buildpath) {
(void)snprintf(hold, sizeof(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)) {
if (!strchr(buf, '\n')) {
warnx("%s: line too long", name);
continue;
}
lowstr(buf, wbuf);
for (p = argv; *p; ++p)
if (match(wbuf, *p)) {
(void)printf("%s", buf);
found[p - argv] = 1;
/* only print line once */
while (*++p)
if (match(wbuf, *p))
found[p - argv] = 1;
break;
}
}
}
}
/*
* match --
* match anywhere the string appears
*/
int
match(char *bp, char *str)
{
int len;
char test;
if (!*bp)
return (0);
/* backward compatible: everything matches empty string */
if (!*str)
return (1);
for (test = *str++, len = strlen(str); *bp;)
if (test == *bp++ && !strncmp(bp, str, len))
return (1);
return (0);
}
/*
* lowstr --
* convert a string to lower case
*/
void
lowstr(char *from, char *to)
{
char ch;
while ((ch = *from++) && ch != '\n')
*to++ = isupper(ch) ? tolower(ch) : ch;
*to = '\0';
}
/*
* usage --
* print usage message and die
*/
void
usage(void)
{
(void)fprintf(stderr,
"usage: apropos [-C file] [-M path] [-m path] keyword [...]\n");
exit(1);
}