/* $OpenBSD: apropos.c,v 1.12 2006/04/02 21:38:56 djm 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 1.12 2006/04/02 21:38:56 djm 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 = calloc(argc, sizeof(int))) == NULL) err(1, NULL); 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 : TAILQ_FIRST(&tp->list); for (; ep != NULL; ep = TAILQ_NEXT(ep, q)) 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); }