1 /* $NetBSD: cmds.c,v 1.28 2004/11/04 07:18:47 dsl 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 35 static char sccsid[] = "@(#)cmds.c 8.2 (Berkeley) 4/29/95"; 36 #endif 37 __RCSID("$NetBSD: cmds.c,v 1.28 2004/11/04 07:18:47 dsl 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 48 void switch_mode(struct mode *p); 49 50 void 51 command(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); 92 done: 93 ; 94 } 95 96 void 97 switch_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 } 149 150 void 151 status(void) 152 { 153 error("Showing %s, refresh every %d seconds.", curmode->c_name, naptime); 154 } 155