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1 | /* |
2 | * Copyright (c) 1987 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
16 | */ | |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
20 | "@(#) Copyright (c) 1987 Regents of the University of California.\n\ | |
21 | All rights reserved.\n"; | |
22 | #endif /* not lint */ | |
23 | ||
24 | #ifndef lint | |
375e838e | 25 | static char sccsid[] = "@(#)whatis.c 5.5 (Berkeley) %G%"; |
9273b7be KB |
26 | #endif /* not lint */ |
27 | ||
28 | #include <sys/param.h> | |
29 | #include <stdio.h> | |
30 | #include <ctype.h> | |
b9d21dac | 31 | #include <string.h> |
375e838e | 32 | #include <stdlib.h> |
b9d21dac | 33 | #include "../man/pathnames.h" |
9273b7be | 34 | |
b9d21dac KB |
35 | #define MAXLINELEN 256 /* max line handled */ |
36 | ||
b9d21dac | 37 | char *progname; |
9273b7be | 38 | |
375e838e KB |
39 | static int *found, foundman; |
40 | ||
9273b7be KB |
41 | main(argc, argv) |
42 | int argc; | |
43 | char **argv; | |
44 | { | |
45 | extern char *optarg; | |
46 | extern int optind; | |
b9d21dac KB |
47 | register char *beg, **p; |
48 | int ch; | |
375e838e | 49 | char *p_augment, *p_path, **getdb(); |
9273b7be | 50 | |
b9d21dac KB |
51 | progname = "whatis"; |
52 | while ((ch = getopt(argc, argv, "M:m:P:")) != EOF) | |
9273b7be KB |
53 | switch((char)ch) { |
54 | case 'M': | |
55 | case 'P': /* backward compatible */ | |
b9d21dac KB |
56 | p_path = optarg; |
57 | break; | |
58 | case 'm': | |
59 | p_augment = optarg; | |
9273b7be KB |
60 | break; |
61 | case '?': | |
62 | default: | |
63 | usage(); | |
64 | } | |
65 | argv += optind; | |
66 | argc -= optind; | |
b9d21dac | 67 | |
9273b7be KB |
68 | if (argc < 1) |
69 | usage(); | |
70 | ||
9273b7be | 71 | /*NOSTRICT*/ |
b9d21dac KB |
72 | if (!(found = (int *)malloc((u_int)argc))) |
73 | enomem(); | |
9273b7be KB |
74 | bzero((char *)found, argc * sizeof(int)); |
75 | ||
76 | for (p = argv; *p; ++p) /* trim full paths */ | |
77 | if (beg = rindex(*p, '/')) | |
78 | *p = beg + 1; | |
79 | ||
b9d21dac | 80 | if (p_augment) |
375e838e KB |
81 | whatis(argv, p_augment, 1); |
82 | if (p_path || (p_path = getenv("MANPATH"))) | |
83 | whatis(argv, p_path, 1); | |
84 | else | |
85 | for (p = getdb(); *p; ++p) | |
86 | whatis(argv, *p, 0); | |
b9d21dac KB |
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 | ||
375e838e | 97 | whatis(argv, path, buildpath) |
b9d21dac | 98 | char **argv, *path; |
375e838e | 99 | int buildpath; |
b9d21dac | 100 | { |
375e838e | 101 | register char *end, *name, **p; |
b9d21dac KB |
102 | char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1]; |
103 | ||
375e838e KB |
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; | |
9273b7be | 113 | } |
375e838e KB |
114 | |
115 | if (!freopen(name, "r", stdin)) | |
9273b7be KB |
116 | continue; |
117 | ||
375e838e KB |
118 | foundman = 1; |
119 | ||
9273b7be | 120 | /* for each file found */ |
375e838e | 121 | while (fgets(buf, sizeof(buf), stdin)) { |
9273b7be KB |
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 | } | |
9273b7be KB |
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; | |
4ec3c3c0 KB |
154 | for (start = bp++; |
155 | *bp && (*bp == '_' || isdigit(*bp) || isalpha(*bp)); ++bp); | |
9273b7be KB |
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 | { | |
b9d21dac KB |
183 | (void)fprintf(stderr, |
184 | "usage: whatis [-M path] [-m path] command ...\n"); | |
9273b7be KB |
185 | exit(1); |
186 | } |