diff options
Diffstat (limited to 'usr.bin/systat/cmds.c')
| -rw-r--r-- | usr.bin/systat/cmds.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/usr.bin/systat/cmds.c b/usr.bin/systat/cmds.c new file mode 100644 index 0000000..4987c2c --- /dev/null +++ b/usr.bin/systat/cmds.c @@ -0,0 +1,192 @@ +/*- + * Copyright (c) 1980, 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)cmds.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <stdlib.h> +#include <unistd.h> +#include <signal.h> +#include <ctype.h> +#include <string.h> +#include "systat.h" +#include "extern.h" + +void +command(cmd) + char *cmd; +{ + register struct cmdtab *p; + register char *cp; + int interval, omask; + + omask = sigblock(sigmask(SIGALRM)); + for (cp = cmd; *cp && !isspace(*cp); cp++) + ; + if (*cp) + *cp++ = '\0'; + if (*cmd == '\0') + return; + for (; *cp && isspace(*cp); cp++) + ; + if (strcmp(cmd, "quit") == 0 || strcmp(cmd, "q") == 0) + die(0); + if (strcmp(cmd, "load") == 0) { + load(); + goto done; + } + if (strcmp(cmd, "stop") == 0) { + alarm(0); + mvaddstr(CMDLINE, 0, "Refresh disabled."); + clrtoeol(); + goto done; + } + if (strcmp(cmd, "help") == 0) { + int col, len; + + move(CMDLINE, col = 0); + for (p = cmdtab; p->c_name; p++) { + len = strlen(p->c_name); + if (col + len > COLS) + break; + addstr(p->c_name); col += len; + if (col + 1 < COLS) + addch(' '); + } + clrtoeol(); + goto done; + } + interval = atoi(cmd); + if (interval <= 0 && + (strcmp(cmd, "start") == 0 || strcmp(cmd, "interval") == 0)) { + interval = *cp ? atoi(cp) : naptime; + if (interval <= 0) { + error("%d: bad interval.", interval); + goto done; + } + } + if (interval > 0) { + alarm(0); + naptime = interval; + display(0); + status(); + goto done; + } + p = lookup(cmd); + if (p == (struct cmdtab *)-1) { + error("%s: Ambiguous command.", cmd); + goto done; + } + if (p) { + if (curcmd == p) + goto done; + alarm(0); + (*curcmd->c_close)(wnd); + wnd = (*p->c_open)(); + if (wnd == 0) { + error("Couldn't open new display"); + wnd = (*curcmd->c_open)(); + if (wnd == 0) { + error("Couldn't change back to previous cmd"); + exit(1); + } + p = curcmd; + } + if ((p->c_flags & CF_INIT) == 0) { + if ((*p->c_init)()) + p->c_flags |= CF_INIT; + else + goto done; + } + curcmd = p; + labels(); + display(0); + status(); + goto done; + } + if (curcmd->c_cmd == 0 || !(*curcmd->c_cmd)(cmd, cp)) + error("%s: Unknown command.", cmd); +done: + sigsetmask(omask); +} + +struct cmdtab * +lookup(name) + register char *name; +{ + register char *p, *q; + register struct cmdtab *c, *found; + register int nmatches, longest; + + longest = 0; + nmatches = 0; + found = (struct cmdtab *) 0; + for (c = cmdtab; p = c->c_name; c++) { + for (q = name; *q == *p++; q++) + if (*q == 0) /* exact match? */ + return (c); + if (!*q) { /* the name was a prefix */ + if (q - name > longest) { + longest = q - name; + nmatches = 1; + found = c; + } else if (q - name == longest) + nmatches++; + } + } + if (nmatches > 1) + return ((struct cmdtab *)-1); + return (found); +} + +void +status() +{ + + error("Showing %s, refresh every %d seconds.", + curcmd->c_name, naptime); +} + +int +prefix(s1, s2) + register char *s1, *s2; +{ + + while (*s1 == *s2) { + if (*s1 == '\0') + return (1); + s1++, s2++; + } + return (*s1 == '\0'); +} |
