1 /* $NetBSD: keyboard.c,v 1.23 2006/05/10 21:53:48 mrg 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[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: keyboard.c,v 1.23 2006/05/10 21:53:48 mrg Exp $"); 38 #endif /* not lint */ 39 40 #include <sys/types.h> 41 42 #include <ctype.h> 43 #include <signal.h> 44 #include <termios.h> 45 #include <stdlib.h> 46 #include <string.h> 47 48 #include "systat.h" 49 #include "extern.h" 50 51 void 52 keyboard(void) 53 { 54 int ch, rch, col; 55 char *line; 56 int i, linesz; 57 static char help[] = "help"; 58 static char quit[] = "quit"; 59 60 ch = 0; /* XXX gcc */ 61 linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */ 62 if ((line = malloc(linesz)) == NULL) { 63 error("malloc failed"); 64 die(0); 65 } 66 67 for (;;) { 68 col = 0; 69 move(CMDLINE, 0); 70 71 while (col == 0 || (ch != '\r' && ch != '\n')) { 72 refresh(); 73 ch = getch(); 74 if (ch == ERR) { 75 display(SIGALRM); 76 continue; 77 } 78 if (ch == KEY_RESIZE) { 79 redraw(0); 80 continue; 81 } 82 ch &= 0177; 83 rch = ch; 84 if (col == 0) { 85 switch(ch) { 86 case '\n': 87 case '\r': 88 case ' ': 89 display(0); 90 break; 91 case CTRL('l'): 92 wrefresh(curscr); 93 break; 94 case CTRL('g'): 95 status(); 96 break; 97 case '?': 98 case 'H': 99 case 'h': 100 command(help); 101 move(CMDLINE, 0); 102 break; 103 case 'Q': 104 case 'q': 105 command(quit); 106 break; 107 case ':': 108 move(CMDLINE, 0); 109 clrtoeol(); 110 addch(':'); 111 col++; 112 break; 113 } 114 continue; 115 } 116 if (ch == '\b' || ch == '\?' || ch == erasechar()) { 117 if (col > 0) 118 col--; 119 goto doerase; 120 } 121 if (ch == CTRL('w') && col > 0) { 122 while (--col >= 0 && 123 isspace((unsigned char)line[col])) 124 continue; 125 col++; 126 while (--col >= 0 && 127 !isspace((unsigned char)line[col])) 128 if (col == 0) 129 break; 130 col++; 131 goto doerase; 132 } 133 if (ch == killchar() && col > 0) { 134 col = 1; 135 doerase: 136 move(CMDLINE, col); 137 clrtoeol(); 138 continue; 139 } 140 if (isprint(rch) || rch == ' ') { 141 if (col < linesz) { 142 line[col] = rch; 143 mvaddch(CMDLINE, col, rch); 144 col++; 145 } 146 } 147 } 148 line[col] = '\0'; 149 /* pass commands as lowercase */ 150 for (i = 1; i < col ; i++) 151 line[i] = tolower((unsigned char)line[i]); 152 command(line + 1); 153 } 154 /* NOTREACHED */ 155 } 156