1/*	$NetBSD: cmds.c,v 1.27 2004/07/03 18:54:47 mycroft Exp $	*/
2
3/*-
4 * Copyright (c) 1980, 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34#if 0
35static char sccsid[] = "@(#)cmds.c	8.2 (Berkeley) 4/29/95";
36#endif
37__RCSID("$NetBSD: cmds.c,v 1.27 2004/07/03 18:54:47 mycroft Exp $");
38#endif /* not lint */
39
40#include <ctype.h>
41#include <signal.h>
42#include <string.h>
43#include <unistd.h>
44
45#include "systat.h"
46#include "extern.h"
47
48void	switch_mode(struct mode *p);
49
50void
51command(char *cmd)
52{
53	struct command *c;
54	struct mode *p;
55	char *args;
56
57	if (cmd[0] == '\0')
58		return;
59
60	args = cmd;
61	cmd = strsep(&args, " \t");
62
63	if (curmode->c_commands) {
64		for (c = curmode->c_commands; c->c_name; c++) {
65			if (strstr(c->c_name, cmd) == c->c_name) {
66				(c->c_cmd)(args);
67				goto done;
68			}
69		}
70	}
71
72	for (c = global_commands; c->c_name; c++) {
73		if (strstr(c->c_name, cmd) == c->c_name) {
74			(c->c_cmd)(args);
75			goto done;
76		}
77	}
78
79	for (p = modes; p->c_name; p++) {
80		if (strstr(p->c_name, cmd) == p->c_name) {
81			switch_mode(p);
82			goto done;
83		}
84	}
85
86	if (isdigit((unsigned char)cmd[0])) {
87		global_interval(cmd);
88		goto done;
89	}
90
91	error("%s: Unknown command.", cmd);
92done:
93	;
94}
95
96void
97switch_mode(struct mode *p)
98{
99	int switchfail;
100	struct mode *r;
101
102	switchfail = 0;
103	r = p;
104
105	if (curmode == p) {
106		status();
107		return;
108	}
109
110	alarm(0);
111	(*curmode->c_close)(wnd);
112	wnd = (*p->c_open)();
113	if (wnd == 0) {
114		wnd = (*curmode->c_open)();
115		if (wnd == 0) {
116			error("Couldn't change back to previous mode");
117			die(0);
118		}
119
120		p = curmode;
121		switchfail++;
122	}
123
124	if ((p->c_flags & CF_INIT) == 0) {
125		if ((*p->c_init)())
126			p->c_flags |= CF_INIT;
127		else {
128			(*p->c_close)(wnd);
129			wnd = (*curmode->c_open)();
130			p = curmode;
131			switchfail++;
132		}
133	}
134
135	curmode = p;
136	labels();
137	display(0);
138	if (switchfail && !allflag)
139		error("Couldn't switch mode, back to %s", curmode->c_name);
140	else {
141		if (switchfail && allflag) {
142			r++;
143			switch_mode(r);
144		} else {
145			status();
146		}
147	}
148}
149
150void
151status(void)
152{
153	error("Showing %s, refresh every %d seconds.", curmode->c_name, naptime);
154}
155