1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1987, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)whatis.c 8.5 (Berkeley) 11/26/93"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/queue.h> 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 #include "../man/config.h" 54 #include "../man/pathnames.h" 55 56 #define MAXLINELEN 256 /* max line handled */ 57 58 static int *found, foundman; 59 60 void dashtrunc __P((char *, char *)); 61 int match __P((char *, char *)); 62 void usage __P((void)); 63 void whatis __P((char **, char *, int)); 64 65 int 66 main(argc, argv) 67 int argc; 68 char *argv[]; 69 { 70 ENTRY *ep; 71 TAG *tp; 72 int ch, rv; 73 char *beg, *conffile, **p, *p_augment, *p_path; 74 75 conffile = NULL; 76 p_augment = p_path = NULL; 77 while ((ch = getopt(argc, argv, "C:M:m:P:")) != EOF) 78 switch (ch) { 79 case 'C': 80 conffile = optarg; 81 break; 82 case 'M': 83 case 'P': /* backward compatible */ 84 p_path = optarg; 85 break; 86 case 'm': 87 p_augment = optarg; 88 break; 89 case '?': 90 default: 91 usage(); 92 } 93 argv += optind; 94 argc -= optind; 95 96 if (argc < 1) 97 usage(); 98 99 if ((found = malloc((u_int)argc * sizeof(int))) == NULL) 100 err(1, NULL); 101 memset(found, 0, argc * sizeof(int)); 102 103 for (p = argv; *p; ++p) /* trim full paths */ 104 if (beg = strrchr(*p, '/')) 105 *p = beg + 1; 106 107 if (p_augment) 108 whatis(argv, p_augment, 1); 109 if (p_path || (p_path = getenv("MANPATH"))) 110 whatis(argv, p_path, 1); 111 else { 112 config(conffile); 113 ep = (tp = getlist("_whatdb")) == NULL ? 114 NULL : tp->list.tqh_first; 115 for (; ep != NULL; ep = ep->q.tqe_next) 116 whatis(argv, ep->s, 0); 117 } 118 119 if (!foundman) { 120 fprintf(stderr, "whatis: no %s file found.\n", _PATH_WHATIS); 121 exit(1); 122 } 123 rv = 1; 124 for (p = argv; *p; ++p) 125 if (found[p - argv]) 126 rv = 0; 127 else 128 printf("%s: not found\n", *p); 129 exit(rv); 130 } 131 132 void 133 whatis(argv, path, buildpath) 134 char **argv, *path; 135 int buildpath; 136 { 137 register char *end, *name, **p; 138 char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1]; 139 140 for (name = path; name; name = end) { /* through name list */ 141 if (end = strchr(name, ':')) 142 *end++ = '\0'; 143 144 if (buildpath) { 145 char hold[MAXPATHLEN + 1]; 146 147 (void)sprintf(hold, "%s/%s", name, _PATH_WHATIS); 148 name = hold; 149 } 150 151 if (!freopen(name, "r", stdin)) 152 continue; 153 154 foundman = 1; 155 156 /* for each file found */ 157 while (fgets(buf, sizeof(buf), stdin)) { 158 dashtrunc(buf, wbuf); 159 for (p = argv; *p; ++p) 160 if (match(wbuf, *p)) { 161 printf("%s", buf); 162 found[p - argv] = 1; 163 164 /* only print line once */ 165 while (*++p) 166 if (match(wbuf, *p)) 167 found[p - argv] = 1; 168 break; 169 } 170 } 171 } 172 } 173 174 /* 175 * match -- 176 * match a full word 177 */ 178 int 179 match(bp, str) 180 register char *bp, *str; 181 { 182 register int len; 183 register char *start; 184 185 if (!*str || !*bp) 186 return(0); 187 for (len = strlen(str);;) { 188 for (; *bp && !isdigit(*bp) && !isalpha(*bp); ++bp); 189 if (!*bp) 190 break; 191 for (start = bp++; 192 *bp && (*bp == '_' || isdigit(*bp) || isalpha(*bp)); ++bp); 193 if (bp - start == len && !strncasecmp(start, str, len)) 194 return(1); 195 } 196 return(0); 197 } 198 199 /* 200 * dashtrunc -- 201 * truncate a string at " - " 202 */ 203 void 204 dashtrunc(from, to) 205 register char *from, *to; 206 { 207 register int ch; 208 209 for (; (ch = *from) && ch != '\n' && 210 (ch != ' ' || from[1] != '-' || from[2] != ' '); ++from) 211 *to++ = ch; 212 *to = '\0'; 213 } 214 215 /* 216 * usage -- 217 * print usage message and die 218 */ 219 void 220 usage() 221 { 222 (void)fprintf(stderr, 223 "usage: whatis [-C file] [-M path] [-m path] command ...\n"); 224 exit(1); 225 } 226