158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
/* $NetBSD: cmds.c,v 1.13 1999/12/16 06:16:16 jwise Exp $ */
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/*-
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* Copyright (c) 1980, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)cmds.c 8.2 (Berkeley) 4/29/95";
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#endif
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__RCSID("$NetBSD: cmds.c,v 1.13 1999/12/16 06:16:16 jwise Exp $");
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#endif /* not lint */
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#include <stdlib.h>
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#include <unistd.h>
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#include <signal.h>
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#include <ctype.h>
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#include <string.h>
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#include "systat.h"
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#include "extern.h"
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void switch_mode __P((struct mode *p));
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void
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command(cmd)
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char *cmd;
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{
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struct command *c;
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struct mode *p;
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char *cp;
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sigset_t set;
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sigemptyset(&set);
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sigaddset(&set, SIGALRM);
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sigprocmask(SIG_BLOCK, &set, NULL);
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for (cp = cmd; *cp && !isspace((unsigned char)*cp); cp++)
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;
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if (*cp)
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*cp++ = '\0';
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if (*cmd == '\0')
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return;
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for (; *cp && isspace((unsigned char)*cp); cp++)
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;
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for (c = global_commands; c->c_name; c++) {
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if (strcmp(cmd, c->c_name) == 0) {
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(c->c_cmd)(cp);
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goto done;
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}
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}
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if (isdigit(cmd[0])) {
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global_interval(cmd);
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goto done;
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}
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for (p = modes; p->c_name; p++) {
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if (strcmp(cmd, p->c_name) == 0) {
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switch_mode(p);
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goto done;
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}
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}
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if (curmode->c_cmd == 0 || !(*curmode->c_cmd)(cmd, cp))
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error("%s: Unknown command.", cmd);
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done:
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sigprocmask(SIG_UNBLOCK, &set, NULL);
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}
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void
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switch_mode(p)
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struct mode *p;
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{
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if (curmode == p)
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return;
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alarm(0);
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(*curmode->c_close)(wnd);
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wnd = (*p->c_open)();
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if (wnd == 0) {
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error("Couldn't open new display");
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wnd = (*curmode->c_open)();
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if (wnd == 0) {
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error("Couldn't change back to previous mode");
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exit(1);
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}
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p = curmode;
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}
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if ((p->c_flags & CF_INIT) == 0) {
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if ((*p->c_init)())
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p->c_flags |= CF_INIT;
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else
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return;
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}
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curmode = p;
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labels();
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display(0);
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status();
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}
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void
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status()
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{
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error("Showing %s, refresh every %d seconds.", curmode->c_name, naptime);
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}
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/* case insensitive prefix comparison */
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int
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prefix(s1, s2)
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char *s1, *s2;
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{
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char c1, c2;
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while (1) {
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c1 = *s1 >= 'A' && *s1 <= 'Z' ? *s1 + 'a' - 'A' : *s1;
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c2 = *s2 >= 'A' && *s2 <= 'Z' ? *s2 + 'a' - 'A' : *s2;
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if (c1 != c2)
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break;
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if (c1 == '\0')
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return (1);
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s1++, s2++;
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}
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return (*s1 == '\0');
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}
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