| 1 | /* Copyright (c) 1979 Regents of the University of California */ |
| 2 | #include <stdio.h> |
| 3 | #include <ctype.h> |
| 4 | /* |
| 5 | * whatis - what the heck is that file anyways |
| 6 | * |
| 7 | * Bill Joy UCB |
| 8 | */ |
| 9 | |
| 10 | char *calloc(); |
| 11 | char *trim(); |
| 12 | unsigned blklen(); |
| 13 | |
| 14 | main(argc, argv) |
| 15 | int argc; |
| 16 | char *argv[]; |
| 17 | { |
| 18 | register char **avp; |
| 19 | |
| 20 | argc--, argv++; |
| 21 | if (argc == 0) { |
| 22 | fprintf(stderr, "whatis name ...\n"); |
| 23 | exit(1); |
| 24 | } |
| 25 | if (freopen("/usr/lib/whatis", "r", stdin) == NULL) { |
| 26 | perror("/usr/lib/whatis"); |
| 27 | exit (1); |
| 28 | } |
| 29 | argv[argc] = 0; |
| 30 | for (avp = argv; *avp; avp++) |
| 31 | *avp = trim(*avp); |
| 32 | whatis(argv); |
| 33 | exit(0); |
| 34 | } |
| 35 | |
| 36 | whatis(argv) |
| 37 | char **argv; |
| 38 | { |
| 39 | char buf[BUFSIZ]; |
| 40 | register char *gotit; |
| 41 | register char **vp; |
| 42 | |
| 43 | gotit = calloc(1, blklen(argv)); |
| 44 | while (fgets(buf, sizeof buf, stdin) != NULL) |
| 45 | for (vp = argv; *vp; vp++) |
| 46 | if (match(buf, *vp)) { |
| 47 | printf("%s", buf); |
| 48 | gotit[vp - argv] = 1; |
| 49 | for (vp++; *vp; vp++) |
| 50 | if (match(buf, *vp)) |
| 51 | gotit[vp - argv] = 1; |
| 52 | break; |
| 53 | } |
| 54 | for (vp = argv; *vp; vp++) |
| 55 | if (gotit[vp - argv] == 0) |
| 56 | printf("%s: not found\n", *vp); |
| 57 | } |
| 58 | |
| 59 | match(buf, str) |
| 60 | char *buf, *str; |
| 61 | { |
| 62 | register char *bp, *cp; |
| 63 | |
| 64 | bp = buf; |
| 65 | again: |
| 66 | cp = str; |
| 67 | while (*bp && *cp && lmatch(*bp, *cp)) |
| 68 | bp++, cp++; |
| 69 | if (*cp == 0 && (*bp == '(' || *bp == ',' || *bp == '\t' || *bp == ' ')) |
| 70 | return (1); |
| 71 | while (isalpha(*bp) || isdigit(*bp)) |
| 72 | bp++; |
| 73 | if (*bp != ',') |
| 74 | return (0); |
| 75 | bp++; |
| 76 | while (isspace(*bp)) |
| 77 | bp++; |
| 78 | goto again; |
| 79 | } |
| 80 | |
| 81 | lmatch(c, d) |
| 82 | char c, d; |
| 83 | { |
| 84 | |
| 85 | if (c == d) |
| 86 | return (1); |
| 87 | if (!isalpha(c) || !isalpha(d)) |
| 88 | return (0); |
| 89 | if (islower(c)) |
| 90 | c = toupper(c); |
| 91 | if (islower(d)) |
| 92 | d = toupper(d); |
| 93 | return (c == d); |
| 94 | } |
| 95 | |
| 96 | unsigned |
| 97 | blklen(ip) |
| 98 | register char **ip; |
| 99 | { |
| 100 | register int i = 0; |
| 101 | |
| 102 | while (*ip++) |
| 103 | i++; |
| 104 | return (i); |
| 105 | } |
| 106 | |
| 107 | char * |
| 108 | trim(cp) |
| 109 | register char *cp; |
| 110 | { |
| 111 | register char *dp; |
| 112 | |
| 113 | for (dp = cp; *dp; dp++) |
| 114 | if (*dp == '/') |
| 115 | cp = dp + 1; |
| 116 | if (cp[0] != '.') { |
| 117 | if (cp + 3 <= dp && dp[-2] == '.' && any(dp[-1], "cosa12345678npP")) |
| 118 | dp[-2] = 0; |
| 119 | if (cp + 4 <= dp && dp[-3] == '.' && any(dp[-2], "13") && isalpha(dp[-1])) |
| 120 | dp[-3] = 0; |
| 121 | } |
| 122 | return (cp); |
| 123 | } |
| 124 | |
| 125 | any(c, cp) |
| 126 | register int c; |
| 127 | register char *cp; |
| 128 | { |
| 129 | |
| 130 | while (*cp) |
| 131 | if (c == *cp++) |
| 132 | return (1); |
| 133 | return (0); |
| 134 | } |