projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 6a571c25 | 1 | #ifndef lint |
| 8aee01cc | 2 | static char *sccsid = "@(#)lcmd.c 3.3 83/08/12"; |
| 6a571c25 EW |
3 | #endif |
| 4 | ||
| 5 | #include "defs.h" | |
| 6 | ||
| 7 | int l_window(); | |
| 8 | int l_select(); | |
| 9 | int l_escape(); | |
| 10 | int l_label(); | |
| 11 | int l_terse(); | |
| 12 | int l_source(); | |
| 13 | int l_write(); | |
| 8aee01cc | 14 | int l_close(); |
| 6a571c25 EW |
15 | |
| 16 | struct lcmd { | |
| 17 | char *l_name; /* name of command */ | |
| 18 | int l_lmin; /* minimum length to check */ | |
| 19 | int l_lmax; /* maximum length to check */ | |
| 20 | int l_amin; /* minimum argument */ | |
| 21 | int l_amax; /* maximum argument */ | |
| 22 | int (*l_func)(); /* the function */ | |
| 23 | }; | |
| 24 | static struct lcmd lcmd[] = { | |
| 8aee01cc EW |
25 | "%", 1, 1, 0, 0, l_select, |
| 26 | "close", 1, 0, 1, -1, l_close, | |
| 27 | "escape", 1, 0, 1, 1, l_escape, | |
| 28 | "label", 1, 0, 2, 2, l_label, | |
| 29 | "source", 1, 0, 1, 1, l_source, | |
| 30 | "terse", 1, 0, 0, 1, l_terse, | |
| 31 | "window", 1, 0, 4, 4, l_window, | |
| 32 | "write", 2, 0, 2, 2, l_write, | |
| 6a571c25 EW |
33 | 0 |
| 34 | }; | |
| 35 | ||
| 36 | dosource(filename) | |
| 37 | char *filename; | |
| 38 | { | |
| 39 | register FILE *f; | |
| 40 | char buf[BUFSIZ]; | |
| 41 | ||
| 42 | if ((f = fopen(filename, "r")) == 0) | |
| 43 | return -1; | |
| 44 | insource++; | |
| 45 | beginerror(filename); | |
| 46 | for (lineno = 1; fgets(buf, sizeof buf, f) != 0; lineno++) | |
| 47 | dolongcmd(buf); | |
| 48 | enderror(); | |
| 49 | insource = 0; | |
| 50 | return 0; | |
| 51 | } | |
| 52 | ||
| 53 | dolongcmd(line) | |
| 54 | char *line; | |
| 55 | { | |
| 56 | register struct lcmd *lp; | |
| 57 | register len; | |
| 58 | ||
| 59 | makeargv(line); | |
| 60 | if (argc == 0) | |
| 61 | return; | |
| 62 | for (lp = lcmd; lp->l_name; lp++) { | |
| 63 | len = strlen(*argv); | |
| 64 | if (len < lp->l_lmin) | |
| 65 | continue; | |
| 66 | if (!strncmp(*argv, lp->l_name, lp->l_lmax ? lp->l_lmax : len)) | |
| 67 | break; | |
| 68 | } | |
| 69 | if (lp->l_name) { | |
| 70 | if (lp->l_amin > argc - 1) | |
| 71 | error("Too few arguments."); | |
| 8aee01cc | 72 | else if (lp->l_amax >= 0 && lp->l_amax < argc - 1) |
| 6a571c25 EW |
73 | error("Too many arguments."); |
| 74 | else | |
| 75 | (*lp->l_func)(); | |
| 76 | } else | |
| 77 | error("%s: Unknown command.", *argv); | |
| 78 | } | |
| 79 | ||
| 80 | makeargv(p) | |
| 81 | register char *p; | |
| 82 | { | |
| 83 | static char buf[BUFSIZ]; | |
| 84 | register char *q = buf, **pp = argv; | |
| 85 | char quote = 0, escape = 0; | |
| 86 | int i; | |
| 87 | ||
| 88 | for (; *p == ' ' || *p == '\t'; p++) | |
| 89 | ; | |
| 90 | while (*p && *p != '\n' && *p != '#' | |
| 91 | && pp < &argv[sizeof argv/sizeof *argv - 1]) { | |
| 92 | *pp++ = q; | |
| 93 | while (*p && *p != '\n') { | |
| 94 | if (escape) { | |
| 95 | switch (*p) { | |
| 96 | case 'n': | |
| 97 | *q++ = '\n'; | |
| 98 | p++; | |
| 99 | break; | |
| 100 | case 'r': | |
| 101 | *q++ = '\r'; | |
| 102 | p++; | |
| 103 | break; | |
| 104 | case '0': case '1': case '2': case '3': | |
| 105 | case '4': case '5': case '6': case '7': | |
| 106 | *q = 0; | |
| 107 | for (i = 3; --i >= 0 | |
| 108 | && *p >= '0' && *p <= '9';) | |
| 109 | *q = *q << 3 | *p++ - '0'; | |
| 110 | q++; | |
| 111 | break; | |
| 112 | default: | |
| 113 | *q++ = *p++; | |
| 114 | break; | |
| 115 | } | |
| 116 | escape = 0; | |
| 117 | } else if (*p == '\\') { | |
| 118 | escape = 1; | |
| 119 | p++; | |
| 120 | } else if (quote) { | |
| 121 | if (*p == quote) { | |
| 122 | quote = 0; | |
| 123 | p++; | |
| 124 | } else | |
| 125 | *q++ = *p++; | |
| 126 | } else { | |
| 127 | if (*p == '"' || *p == '\'') | |
| 128 | quote = *p++; | |
| 129 | else if (*p == ' ' || *p == '\t') | |
| 130 | break; | |
| 131 | else | |
| 132 | *q++ = *p++; | |
| 133 | } | |
| 134 | } | |
| 135 | *q++ = 0; | |
| 136 | for (; *p == ' ' || *p == '\t'; p++) | |
| 137 | ; | |
| 138 | } | |
| 139 | *pp = 0; | |
| 140 | argc = pp - argv; | |
| 141 | } |