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 8.2 (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 char *progname; 33 34 static int *found, foundman; 35 36 main(argc, argv) 37 int argc; 38 char **argv; 39 { 40 extern char *optarg; 41 extern int optind; 42 ENTRY *ep; 43 int ch; 44 char *beg, **p, *p_augment, *p_path, **getdb(); 45 46 progname = "whatis"; 47 p_augment = p_path = NULL; 48 while ((ch = getopt(argc, argv, "M:m:P:")) != EOF) 49 switch((char)ch) { 50 case 'M': 51 case 'P': /* backward compatible */ 52 p_path = optarg; 53 break; 54 case 'm': 55 p_augment = optarg; 56 break; 57 case '?': 58 default: 59 usage(); 60 } 61 argv += optind; 62 argc -= optind; 63 64 if (argc < 1) 65 usage(); 66 67 if ((found = malloc((u_int)argc)) == NULL) 68 err(1, NULL); 69 memset(found, 0, argc * sizeof(int)); 70 71 for (p = argv; *p; ++p) /* trim full paths */ 72 if (beg = rindex(*p, '/')) 73 *p = beg + 1; 74 75 if (p_augment) 76 whatis(argv, p_augment, 1); 77 if (p_path || (p_path = getenv("MANPATH"))) 78 whatis(argv, p_path, 1); 79 else { 80 config(); 81 ep = getlist("_whatdb"); 82 if (ep != NULL) 83 ep = ep->list.qe_next; 84 for (; ep != NULL; ep = ep->list.qe_next) 85 whatis(argv, ep->s, 0); 86 } 87 88 if (!foundman) { 89 fprintf(stderr, "whatis: no %s file found.\n", _PATH_WHATIS); 90 exit(1); 91 } 92 for (p = argv; *p; ++p) 93 if (!found[p - argv]) 94 printf("%s: not found\n", *p); 95 } 96 97 whatis(argv, path, buildpath) 98 char **argv, *path; 99 int buildpath; 100 { 101 register char *end, *name, **p; 102 char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1]; 103 104 for (name = path; name; name = end) { /* through name list */ 105 if (end = index(name, ':')) 106 *end++ = '\0'; 107 108 if (buildpath) { 109 char hold[MAXPATHLEN + 1]; 110 111 (void)sprintf(hold, "%s/%s", name, _PATH_WHATIS); 112 name = hold; 113 } 114 115 if (!freopen(name, "r", stdin)) 116 continue; 117 118 foundman = 1; 119 120 /* for each file found */ 121 while (fgets(buf, sizeof(buf), stdin)) { 122 dashtrunc(buf, wbuf); 123 for (p = argv; *p; ++p) 124 if (match(wbuf, *p)) { 125 printf("%s", buf); 126 found[p - argv] = 1; 127 128 /* only print line once */ 129 while (*++p) 130 if (match(wbuf, *p)) 131 found[p - argv] = 1; 132 break; 133 } 134 } 135 } 136 } 137 138 /* 139 * match -- 140 * match a full word 141 */ 142 match(bp, str) 143 register char *bp, *str; 144 { 145 register int len; 146 register char *start; 147 148 if (!*str || !*bp) 149 return(0); 150 for (len = strlen(str);;) { 151 for (; *bp && !isdigit(*bp) && !isalpha(*bp); ++bp); 152 if (!*bp) 153 break; 154 for (start = bp++; 155 *bp && (*bp == '_' || isdigit(*bp) || isalpha(*bp)); ++bp); 156 if (bp - start == len && !strncasecmp(start, str, len)) 157 return(1); 158 } 159 return(0); 160 } 161 162 /* 163 * dashtrunc -- 164 * truncate a string at " - " 165 */ 166 dashtrunc(from, to) 167 register char *from, *to; 168 { 169 register int ch; 170 171 for (; (ch = *from) && ch != '\n' && 172 (ch != ' ' || from[1] != '-' || from[2] != ' '); ++from) 173 *to++ = ch; 174 *to = '\0'; 175 } 176 177 /* 178 * usage -- 179 * print usage message and die 180 */ 181 usage() 182 { 183 (void)fprintf(stderr, 184 "usage: whatis [-M path] [-m path] command ...\n"); 185 exit(1); 186 } 187