1 /* $NetBSD: keyboard.c,v 1.13 2000/12/01 02:19:44 simonb 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 40 #endif 41 __RCSID("$NetBSD: keyboard.c,v 1.13 2000/12/01 02:19:44 simonb Exp $"); 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 46 #include <ctype.h> 47 #include <signal.h> 48 #include <termios.h> 49 #include <stdlib.h> 50 51 #include "systat.h" 52 #include "extern.h" 53 54 int 55 keyboard(void) 56 { 57 char ch, rch, *line; 58 int i, linesz; 59 sigset_t set; 60 61 sigemptyset(&set); 62 sigaddset(&set, SIGALRM); 63 64 linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */ 65 if ((line = malloc(linesz)) == NULL) { 66 error("malloc failed"); 67 die(0); 68 } 69 70 for (;;) { 71 col = 0; 72 move(CMDLINE, 0); 73 74 while (col == 0 || (ch != '\r' && ch != '\n')) { 75 refresh(); 76 ch = getch() & 0177; 77 if (ch == 0177 && ferror(stdin)) { 78 clearerr(stdin); 79 continue; 80 } 81 rch = ch; 82 if (col == 0) { 83 switch(ch) { 84 case '\n': 85 case '\r': 86 case ' ': 87 display(0); 88 break; 89 case CTRL('l'): 90 sigprocmask(SIG_BLOCK, &set, NULL); 91 wrefresh(curscr); 92 sigprocmask(SIG_UNBLOCK, &set, NULL); 93 break; 94 case CTRL('g'): 95 sigprocmask(SIG_BLOCK, &set, NULL); 96 status(); 97 sigprocmask(SIG_UNBLOCK, &set, NULL); 98 break; 99 case '?': 100 case 'H': 101 case 'h': 102 command("help"); 103 move(CMDLINE, 0); 104 break; 105 case 'Q': 106 command("quit"); 107 break; 108 case ':': 109 move(CMDLINE, 0); 110 clrtoeol(); 111 addch(':'); 112 col++; 113 break; 114 } 115 continue; 116 } 117 if (ch == erasechar() && col > 0) { 118 if (col == 1) 119 continue; 120 col--; 121 goto doerase; 122 } 123 if (ch == CTRL('w') && col > 0) { 124 while (--col >= 0 && isspace(line[col])); 125 col++; 126 while (--col >= 0 && !isspace(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(line[i]); 151 command(line + 1); 152 } 153 /* NOTREACHED */ 154 } 155