/* $NetBSD: whatis.c,v 1.24 2011/09/06 18:46:03 joerg Exp $ */ /* * 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. 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) 1987, 1993\ The Regents of the University of California. All rights reserved."); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)whatis.c 8.5 (Berkeley) 1/2/94"; #else __RCSID("$NetBSD: whatis.c,v 1.24 2011/09/06 18:46:03 joerg Exp $"); #endif #endif /* not lint */ #include <sys/param.h> #include <sys/queue.h> #include <ctype.h> #include <err.h> #include <glob.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "manconf.h" /* from ../man/ */ #include "pathnames.h" /* from ../man/ */ #define MAXLINELEN 8192 /* max line handled */ static int *found, foundman; static void dashtrunc(char *, char *); static int match(char *, char *); __dead static void usage(void); static void whatis(char **, char *, int); int main(int argc, char **argv) { ENTRY *ep; TAG *tp; int ch, rv; char *beg, *conffile, **p, *p_augment, *p_path; glob_t pg; 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, "malloc"); 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); tp = gettag("_whatdb", 0); if (!tp) errx(EXIT_FAILURE, "no database dirs (_whatdb) in config file"); TAILQ_FOREACH(ep, &tp->entrylist, q) { if ((rv = glob(ep->s, GLOB_BRACE | GLOB_NOSORT, NULL, &pg)) != 0) { if (rv == GLOB_NOMATCH) continue; else err(EXIT_FAILURE, "glob"); } if (pg.gl_pathc) for (p = pg.gl_pathv; *p; p++) whatis(argv, *p, 0); globfree(&pg); } } 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); } static void whatis(char **argv, char *path, int buildpath) { char *end, *name, **p; char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1]; char hold[MAXPATHLEN + 1]; for (name = path; name; name = end) { /* through name list */ if ((end = strchr(name, ':'))) *end++ = '\0'; if (buildpath) { (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 */ static int match(char *bp, char *str) { int len; char *start; if (!*str || !*bp) return(0); for (len = strlen(str);;) { /* * /bin/[ is a special case. */ for (; *bp && *bp != '[' && !isalnum((unsigned char)*bp); ++bp); if (!*bp) break; /* check for word match first */ for (start = bp++; *bp && (*bp == '_' || isalnum((unsigned char) *bp)); ++bp); if (bp - start == len && strncasecmp(start, str, len) == 0) { return(1); } else if (*bp && *bp != ',') { /* check for full string match */ for (bp = start; *bp && *bp != ',' && *bp != '(' && !isspace((unsigned char) *bp); ++bp); if (bp - start == len && strncasecmp(start, str, len) == 0) return(1); } } return(0); } /* * dashtrunc -- * truncate a string at " - " */ static void dashtrunc(char *from, char *to) { int ch; for (; (ch = *from) && ch != '\n' && (ch != ' ' || from[1] != '-' || from[2] != ' '); ++from) *to++ = ch; *to = '\0'; } /* * usage -- * print usage message and die */ static void usage(void) { (void)fprintf(stderr, "usage: whatis [-C file] [-M path] [-m path] command ...\n"); exit(1); }