projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 612f3023 SL |
1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)cmds.c 1.1 (Lucasfilm) %G%"; | |
| 3 | #endif | |
| 4 | ||
| 5 | /* | |
| 6 | * Command support. | |
| 7 | */ | |
| 8 | ||
| 9 | #include "systat.h" | |
| 10 | ||
| 11 | command(cmd) | |
| 12 | char *cmd; | |
| 13 | { | |
| 14 | register char *cp; | |
| 15 | register struct cmdtab *p; | |
| 16 | char *arg; | |
| 17 | ||
| 18 | for (cp = cmd; *cp && !isspace(*cp); cp++) | |
| 19 | ; | |
| 20 | if (*cp) | |
| 21 | *cp++ = '\0'; | |
| 22 | if (strcmp(cmd, "quit") == 0) | |
| 23 | die(); | |
| 24 | if (strcmp(cmd, "status") == 0 || strcmp(cmd, "help") == 0) { | |
| 25 | status(); | |
| 26 | return; | |
| 27 | } | |
| 28 | if (strcmp(cmd, "load") == 0) { | |
| 29 | load(); | |
| 30 | return; | |
| 31 | } | |
| 32 | p = getcmd(cmd); | |
| 33 | if (p != (struct cmdtab *)-1) { | |
| 34 | if (curcmd == p) | |
| 35 | return; | |
| 36 | alarm(0); | |
| 37 | (*curcmd->c_close)(wnd); | |
| 38 | wnd = (*p->c_open)(); | |
| 39 | curcmd = p; | |
| 40 | if (p->c_flags == 0) { | |
| 41 | (*p->c_init)(); | |
| 42 | p->c_flags = 1; | |
| 43 | } | |
| 44 | labels(); | |
| 45 | display(); | |
| 46 | status(); | |
| 47 | return; | |
| 48 | } | |
| 49 | if (strcmp(cmd, "stop") == 0) { | |
| 50 | alarm(0); | |
| 51 | mvaddstr(22, 0, "Refresh disabled."); | |
| 52 | clrtoeol(); | |
| 53 | return; | |
| 54 | } | |
| 55 | /* commands with arguments */ | |
| 56 | for (; *cp && isspace(*cp); cp++) | |
| 57 | ; | |
| 58 | if (strcmp(cmd, "start") == 0) { | |
| 59 | int x; | |
| 60 | ||
| 61 | if (*cp == '\0') | |
| 62 | x = naptime; | |
| 63 | else | |
| 64 | x = atoi(cp); | |
| 65 | if (x <= 0) { | |
| 66 | mvprintw(22, 0, "%d: bad interval.", x); | |
| 67 | clrtoeol(); | |
| 68 | return; | |
| 69 | } | |
| 70 | alarm(0); | |
| 71 | naptime = x; | |
| 72 | display(); | |
| 73 | status(); | |
| 74 | return; | |
| 75 | } | |
| 76 | if (*cmd) { | |
| 77 | mvprintw(22, 0, "%s: Unknown command.", cmd); | |
| 78 | clrtoeol(); | |
| 79 | } | |
| 80 | } | |
| 81 | ||
| 82 | struct cmdtab * | |
| 83 | getcmd(name) | |
| 84 | register char *name; | |
| 85 | { | |
| 86 | register char *p, *q; | |
| 87 | register struct cmdtab *c, *found; | |
| 88 | register int nmatches, longest; | |
| 89 | ||
| 90 | longest = 0; | |
| 91 | nmatches = 0; | |
| 92 | found = 0; | |
| 93 | for (c = cmdtab; p = c->c_name; c++) { | |
| 94 | for (q = name; *q == *p++; q++) | |
| 95 | if (*q == 0) /* exact match? */ | |
| 96 | return (c); | |
| 97 | if (!*q) { /* the name was a prefix */ | |
| 98 | if (q - name > longest) { | |
| 99 | longest = q - name; | |
| 100 | nmatches = 1; | |
| 101 | found = c; | |
| 102 | } else if (q - name == longest) | |
| 103 | nmatches++; | |
| 104 | } | |
| 105 | } | |
| 106 | if (nmatches > 1) | |
| 107 | return ((struct cmdtab *)-1); | |
| 108 | return (found); | |
| 109 | } | |
| 110 | ||
| 111 | status() | |
| 112 | { | |
| 113 | ||
| 114 | mvprintw(22, 0, "Showing %s, refresh every %d seconds.", | |
| 115 | curcmd->c_name, naptime); | |
| 116 | clrtoeol(); | |
| 117 | } | |
| 118 | ||
| 119 | suspend() | |
| 120 | { | |
| 121 | int oldmask; | |
| 122 | ||
| 123 | alarm(0); | |
| 124 | move(22, 0); | |
| 125 | refresh(); | |
| 126 | echo(); | |
| 127 | nocrmode(); | |
| 128 | signal(SIGTSTP, SIG_DFL); | |
| 129 | oldmask = sigsetmask(0); | |
| 130 | kill(getpid(), SIGTSTP); | |
| 131 | sigsetmask(oldmask); | |
| 132 | signal(SIGTSTP, suspend); | |
| 133 | crmode(); | |
| 134 | noecho(); | |
| 135 | move(22, col); | |
| 136 | wrefresh(curscr); | |
| 137 | alarm(naptime); | |
| 138 | } |