1 /* $NetBSD: keyboard.c,v 1.3 1996/12/13 19:26:20 scottr 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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 static char rcsid[] = "$NetBSD: keyboard.c,v 1.3 1996/12/13 19:26:20 scottr Exp $"; 41 #endif /* not lint */ 42 43 #include <ctype.h> 44 #include <signal.h> 45 #include <termios.h> 46 47 #include "systat.h" 48 #include "extern.h" 49 50 int 51 keyboard() 52 { 53 char ch, line[80]; 54 sigset_t set; 55 56 sigemptyset(&set); 57 sigaddset(&set, SIGALRM); 58 59 for (;;) { 60 col = 0; 61 move(CMDLINE, 0); 62 do { 63 refresh(); 64 ch = getch() & 0177; 65 if (ch == 0177 && ferror(stdin)) { 66 clearerr(stdin); 67 continue; 68 } 69 if (ch >= 'A' && ch <= 'Z') 70 ch += 'a' - 'A'; 71 if (col == 0) { 72 if (ch == CTRL('l')) { 73 sigprocmask(SIG_BLOCK, &set, NULL); 74 wrefresh(curscr); 75 sigprocmask(SIG_UNBLOCK, &set, NULL); 76 continue; 77 } 78 if (ch == CTRL('g')) { 79 sigprocmask(SIG_BLOCK, &set, NULL); 80 status(); 81 sigprocmask(SIG_UNBLOCK, &set, NULL); 82 continue; 83 } 84 if (ch != ':') 85 continue; 86 move(CMDLINE, 0); 87 clrtoeol(); 88 } 89 if (ch == erasechar() && col > 0) { 90 if (col == 1 && line[0] == ':') 91 continue; 92 col--; 93 goto doerase; 94 } 95 if (ch == CTRL('w') && col > 0) { 96 while (--col >= 0 && isspace(line[col])); 97 col++; 98 while (--col >= 0 && !isspace(line[col])) 99 if (col == 0 && line[0] == ':') 100 break; 101 col++; 102 goto doerase; 103 } 104 if (ch == killchar() && col > 0) { 105 col = 0; 106 if (line[0] == ':') 107 col++; 108 doerase: 109 move(CMDLINE, col); 110 clrtoeol(); 111 continue; 112 } 113 if (isprint(ch) || ch == ' ') { 114 line[col] = ch; 115 mvaddch(CMDLINE, col, ch); 116 col++; 117 } 118 } while (col == 0 || (ch != '\r' && ch != '\n')); 119 line[col] = '\0'; 120 sigprocmask(SIG_BLOCK, &set, NULL); 121 command(line + 1); 122 sigprocmask(SIG_UNBLOCK, &set, NULL); 123 } 124 /* NOTREACHED */ 125 } 126