Commit | Line | Data |
---|---|---|
783c5c09 BJ |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
2 | #include <stdio.h> | |
3 | #include <ctype.h> | |
4 | ||
5 | main(argc, argv) | |
6 | int argc; | |
7 | char *argv[]; | |
8 | { | |
9 | ||
10 | argc--, argv++; | |
11 | if (argc == 0) { | |
12 | usage: | |
13 | fprintf(stderr, "apropos word ...\n"); | |
14 | exit(1); | |
15 | } | |
16 | if (freopen("/usr/lib/whatis", "r", stdin) == NULL) { | |
17 | perror("/usr/lib/whatis"); | |
18 | exit (1); | |
19 | } | |
20 | argv[argc] = 0; | |
21 | apropos(argv); | |
22 | exit(0); | |
23 | } | |
24 | ||
25 | apropos(argv) | |
26 | char **argv; | |
27 | { | |
28 | char buf[BUFSIZ]; | |
29 | char *gotit; | |
30 | register char **vp; | |
31 | ||
32 | gotit = (char *) calloc(1, blklen(argv)); | |
33 | while (fgets(buf, sizeof buf, stdin) != NULL) | |
34 | for (vp = argv; *vp; vp++) | |
35 | if (match(buf, *vp)) { | |
36 | printf("%s", buf); | |
37 | gotit[vp - argv] = 1; | |
38 | for (vp++; *vp; vp++) | |
39 | if (match(buf, *vp)) | |
40 | gotit[vp - argv] = 1; | |
41 | break; | |
42 | } | |
43 | for (vp = argv; *vp; vp++) | |
44 | if (gotit[vp - argv] == 0) | |
45 | printf("%s: nothing apropriate\n", *vp); | |
46 | } | |
47 | ||
48 | match(buf, str) | |
49 | char *buf, *str; | |
50 | { | |
51 | register char *bp, *cp; | |
52 | ||
53 | bp = buf; | |
54 | for (;;) { | |
55 | if (*bp == 0) | |
56 | return (0); | |
57 | if (amatch(bp, str)) | |
58 | return (1); | |
59 | bp++; | |
60 | } | |
61 | } | |
62 | ||
63 | amatch(cp, dp) | |
64 | register char *cp, *dp; | |
65 | { | |
66 | ||
67 | while (*cp && *dp && lmatch(*cp, *dp)) | |
68 | cp++, dp++; | |
69 | if (*dp == 0) | |
70 | return (1); | |
71 | return (0); | |
72 | } | |
73 | ||
74 | lmatch(c, d) | |
75 | char c, d; | |
76 | { | |
77 | ||
78 | if (c == d) | |
79 | return (1); | |
80 | if (!isalpha(c) || !isalpha(d)) | |
81 | return (0); | |
82 | if (islower(c)) | |
83 | c = toupper(c); | |
84 | if (islower(d)) | |
85 | d = toupper(d); | |
86 | return (c == d); | |
87 | } | |
88 | ||
89 | blklen(ip) | |
90 | register int *ip; | |
91 | { | |
92 | register int i = 0; | |
93 | ||
94 | while (*ip++) | |
95 | i++; | |
96 | return (i); | |
97 | } |