1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char copyright[] = 10 "@(#) Copyright (c) 1987, 1993\n\ 11 The Regents of the University of California. All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)whatis.c 8.3 (Berkeley) 01/02/94"; 16 #endif /* not lint */ 17 18 #include <sys/param.h> 19 #include <sys/queue.h> 20 21 #include <ctype.h> 22 #include <err.h> 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <string.h> 26 27 #include "../man/config.h" 28 #include "../man/pathnames.h" 29 30 #define MAXLINELEN 256 /* max line handled */ 31 32 static int *found, foundman; 33 34 int 35 main(argc, argv) 36 int argc; 37 char *argv[]; 38 { 39 extern char *optarg; 40 extern int optind; 41 ENTRY *ep; 42 int ch; 43 char *beg, *conffile, **p, *p_augment, *p_path; 44 45 conffile = NULL; 46 p_augment = p_path = NULL; 47 while ((ch = getopt(argc, argv, "C:M:m:P:")) != EOF) 48 switch (ch) { 49 case 'C': 50 conffile = optarg; 51 break; 52 case 'M': 53 case 'P': /* backward compatible */ 54 p_path = optarg; 55 break; 56 case 'm': 57 p_augment = optarg; 58 break; 59 case '?': 60 default: 61 usage(); 62 } 63 argv += optind; 64 argc -= optind; 65 66 if (argc < 1) 67 usage(); 68 69 if ((found = malloc((u_int)argc)) == NULL) 70 err(1, NULL); 71 memset(found, 0, argc * sizeof(int)); 72 73 for (p = argv; *p; ++p) /* trim full paths */ 74 if (beg = rindex(*p, '/')) 75 *p = beg + 1; 76 77 if (p_augment) 78 whatis(argv, p_augment, 1); 79 if (p_path || (p_path = getenv("MANPATH"))) 80 whatis(argv, p_path, 1); 81 else { 82 config(conffile); 83 ep = getlist("_whatdb"); 84 if (ep != NULL) 85 ep = ep->list.qe_next; 86 for (; ep != NULL; ep = ep->list.qe_next) 87 whatis(argv, ep->s, 0); 88 } 89 90 if (!foundman) { 91 fprintf(stderr, "whatis: no %s file found.\n", _PATH_WHATIS); 92 exit(1); 93 } 94 for (p = argv; *p; ++p) 95 if (!found[p - argv]) 96 printf("%s: not found\n", *p); 97 } 98 99 whatis(argv, path, buildpath) 100 char **argv, *path; 101 int buildpath; 102 { 103 register char *end, *name, **p; 104 char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1]; 105 106 for (name = path; name; name = end) { /* through name list */ 107 if (end = index(name, ':')) 108 *end++ = '\0'; 109 110 if (buildpath) { 111 char hold[MAXPATHLEN + 1]; 112 113 (void)sprintf(hold, "%s/%s", name, _PATH_WHATIS); 114 name = hold; 115 } 116 117 if (!freopen(name, "r", stdin)) 118 continue; 119 120 foundman = 1; 121 122 /* for each file found */ 123 while (fgets(buf, sizeof(buf), stdin)) { 124 dashtrunc(buf, wbuf); 125 for (p = argv; *p; ++p) 126 if (match(wbuf, *p)) { 127 printf("%s", buf); 128 found[p - argv] = 1; 129 130 /* only print line once */ 131 while (*++p) 132 if (match(wbuf, *p)) 133 found[p - argv] = 1; 134 break; 135 } 136 } 137 } 138 } 139 140 /* 141 * match -- 142 * match a full word 143 */ 144 match(bp, str) 145 register char *bp, *str; 146 { 147 register int len; 148 register char *start; 149 150 if (!*str || !*bp) 151 return(0); 152 for (len = strlen(str);;) { 153 for (; *bp && !isdigit(*bp) && !isalpha(*bp); ++bp); 154 if (!*bp) 155 break; 156 for (start = bp++; 157 *bp && (*bp == '_' || isdigit(*bp) || isalpha(*bp)); ++bp); 158 if (bp - start == len && !strncasecmp(start, str, len)) 159 return(1); 160 } 161 return(0); 162 } 163 164 /* 165 * dashtrunc -- 166 * truncate a string at " - " 167 */ 168 dashtrunc(from, to) 169 register char *from, *to; 170 { 171 register int ch; 172 173 for (; (ch = *from) && ch != '\n' && 174 (ch != ' ' || from[1] != '-' || from[2] != ' '); ++from) 175 *to++ = ch; 176 *to = '\0'; 177 } 178 179 /* 180 * usage -- 181 * print usage message and die 182 */ 183 usage() 184 { 185 (void)fprintf(stderr, 186 "usage: whatis [-C file] [-M path] [-m path] command ...\n"); 187 exit(1); 188 } 189