1 /* $NetBSD: keyboard.c,v 1.20 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[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: keyboard.c,v 1.20 2004/11/04 07:18:47 dsl 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 47 #include "systat.h" 48 #include "extern.h" 49 50 void 51 keyboard(void) 52 { 53 int ch, rch; 54 char *line; 55 int i, linesz; 56 57 linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */ 58 if ((line = malloc(linesz)) == NULL) { 59 error("malloc failed"); 60 die(0); 61 } 62 63 for (;;) { 64 col = 0; 65 move(CMDLINE, 0); 66 67 while (col == 0 || (ch != '\r' && ch != '\n')) { 68 refresh(); 69 ch = getch(); 70 if (ch == ERR) { 71 display(SIGALRM); 72 continue; 73 } 74 if (ch == KEY_RESIZE) { 75 redraw(0); 76 continue; 77 } 78 ch &= 0177; 79 rch = ch; 80 if (col == 0) { 81 switch(ch) { 82 case '\n': 83 case '\r': 84 case ' ': 85 display(0); 86 break; 87 case CTRL('l'): 88 wrefresh(curscr); 89 break; 90 case CTRL('g'): 91 status(); 92 break; 93 case '?': 94 case 'H': 95 case 'h': 96 command("help"); 97 move(CMDLINE, 0); 98 break; 99 case 'Q': 100 case 'q': 101 command("quit"); 102 break; 103 case ':': 104 move(CMDLINE, 0); 105 clrtoeol(); 106 addch(':'); 107 col++; 108 break; 109 } 110 continue; 111 } 112 if (ch == erasechar() && col > 0) { 113 if (col == 1) 114 continue; 115 col--; 116 goto doerase; 117 } 118 if (ch == CTRL('w') && col > 0) { 119 while (--col >= 0 && 120 isspace((unsigned char)line[col])) 121 continue; 122 col++; 123 while (--col >= 0 && 124 !isspace((unsigned char)line[col])) 125 if (col == 0) 126 break; 127 col++; 128 goto doerase; 129 } 130 if (ch == killchar() && col > 0) { 131 col = 1; 132 doerase: 133 move(CMDLINE, col); 134 clrtoeol(); 135 continue; 136 } 137 if (isprint(rch) || rch == ' ') { 138 if (col < linesz) { 139 line[col] = rch; 140 mvaddch(CMDLINE, col, rch); 141 col++; 142 } 143 } 144 } 145 line[col] = '\0'; 146 /* pass commands as lowercase */ 147 for (i = 1; i < col ; i++) 148 line[i] = tolower((unsigned char)line[i]); 149 command(line + 1); 150 } 151 /* NOTREACHED */ 152 } 153