1 /* $NetBSD: keyboard.c,v 1.22 2005/02/26 22:12:33 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 1.22 2005/02/26 22:12:33 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 #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 linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */ 61 if ((line = malloc(linesz)) == NULL) { 62 error("malloc failed"); 63 die(0); 64 } 65 66 for (;;) { 67 col = 0; 68 move(CMDLINE, 0); 69 70 while (col == 0 || (ch != '\r' && ch != '\n')) { 71 refresh(); 72 ch = getch(); 73 if (ch == ERR) { 74 display(SIGALRM); 75 continue; 76 } 77 if (ch == KEY_RESIZE) { 78 redraw(0); 79 continue; 80 } 81 ch &= 0177; 82 rch = ch; 83 if (col == 0) { 84 switch(ch) { 85 case '\n': 86 case '\r': 87 case ' ': 88 display(0); 89 break; 90 case CTRL('l'): 91 wrefresh(curscr); 92 break; 93 case CTRL('g'): 94 status(); 95 break; 96 case '?': 97 case 'H': 98 case 'h': 99 command(help); 100 move(CMDLINE, 0); 101 break; 102 case 'Q': 103 case 'q': 104 command(quit); 105 break; 106 case ':': 107 move(CMDLINE, 0); 108 clrtoeol(); 109 addch(':'); 110 col++; 111 break; 112 } 113 continue; 114 } 115 if (ch == '\b' || ch == '\?' || ch == erasechar()) { 116 if (col > 0) 117 col--; 118 goto doerase; 119 } 120 if (ch == CTRL('w') && col > 0) { 121 while (--col >= 0 && 122 isspace((unsigned char)line[col])) 123 continue; 124 col++; 125 while (--col >= 0 && 126 !isspace((unsigned char)line[col])) 127 if (col == 0) 128 break; 129 col++; 130 goto doerase; 131 } 132 if (ch == killchar() && col > 0) { 133 col = 1; 134 doerase: 135 move(CMDLINE, col); 136 clrtoeol(); 137 continue; 138 } 139 if (isprint(rch) || rch == ' ') { 140 if (col < linesz) { 141 line[col] = rch; 142 mvaddch(CMDLINE, col, rch); 143 col++; 144 } 145 } 146 } 147 line[col] = '\0'; 148 /* pass commands as lowercase */ 149 for (i = 1; i < col ; i++) 150 line[i] = tolower((unsigned char)line[i]); 151 command(line + 1); 152 } 153 /* NOTREACHED */ 154 } 155