1 /* $NetBSD: keyboard.c,v 1.4 1997/07/21 07:05:02 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. 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 1.4 1997/07/21 07:05:02 mrg Exp $"); 42 #endif /* not lint */ 43 44 #include <ctype.h> 45 #include <signal.h> 46 #include <termios.h> 47 48 #include "systat.h" 49 #include "extern.h" 50 51 int 52 keyboard() 53 { 54 char ch, line[80]; 55 sigset_t set; 56 57 sigemptyset(&set); 58 sigaddset(&set, SIGALRM); 59 60 for (;;) { 61 col = 0; 62 move(CMDLINE, 0); 63 do { 64 refresh(); 65 ch = getch() & 0177; 66 if (ch == 0177 && ferror(stdin)) { 67 clearerr(stdin); 68 continue; 69 } 70 if (ch >= 'A' && ch <= 'Z') 71 ch += 'a' - 'A'; 72 if (col == 0) { 73 if (ch == CTRL('l')) { 74 sigprocmask(SIG_BLOCK, &set, NULL); 75 wrefresh(curscr); 76 sigprocmask(SIG_UNBLOCK, &set, NULL); 77 continue; 78 } 79 if (ch == CTRL('g')) { 80 sigprocmask(SIG_BLOCK, &set, NULL); 81 status(); 82 sigprocmask(SIG_UNBLOCK, &set, NULL); 83 continue; 84 } 85 if (ch != ':') 86 continue; 87 move(CMDLINE, 0); 88 clrtoeol(); 89 } 90 if (ch == erasechar() && col > 0) { 91 if (col == 1 && line[0] == ':') 92 continue; 93 col--; 94 goto doerase; 95 } 96 if (ch == CTRL('w') && col > 0) { 97 while (--col >= 0 && isspace(line[col])); 98 col++; 99 while (--col >= 0 && !isspace(line[col])) 100 if (col == 0 && line[0] == ':') 101 break; 102 col++; 103 goto doerase; 104 } 105 if (ch == killchar() && col > 0) { 106 col = 0; 107 if (line[0] == ':') 108 col++; 109 doerase: 110 move(CMDLINE, col); 111 clrtoeol(); 112 continue; 113 } 114 if (isprint(ch) || ch == ' ') { 115 line[col] = ch; 116 mvaddch(CMDLINE, col, ch); 117 col++; 118 } 119 } while (col == 0 || (ch != '\r' && ch != '\n')); 120 line[col] = '\0'; 121 sigprocmask(SIG_BLOCK, &set, NULL); 122 command(line + 1); 123 sigprocmask(SIG_UNBLOCK, &set, NULL); 124 } 125 /* NOTREACHED */ 126 } 127