1 /* $NetBSD: keyboard.c,v 1.2 1995/01/20 08:51:59 jtc 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 1.2 1995/01/20 08:51:59 jtc 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 int oldmask; 55 56 for (;;) { 57 col = 0; 58 move(CMDLINE, 0); 59 do { 60 refresh(); 61 ch = getch() & 0177; 62 if (ch == 0177 && ferror(stdin)) { 63 clearerr(stdin); 64 continue; 65 } 66 if (ch >= 'A' && ch <= 'Z') 67 ch += 'a' - 'A'; 68 if (col == 0) { 69 #define mask(s) (1 << ((s) - 1)) 70 if (ch == CTRL('l')) { 71 oldmask = sigblock(mask(SIGALRM)); 72 wrefresh(curscr); 73 sigsetmask(oldmask); 74 continue; 75 } 76 if (ch == CTRL('g')) { 77 oldmask = sigblock(mask(SIGALRM)); 78 status(); 79 sigsetmask(oldmask); 80 continue; 81 } 82 if (ch != ':') 83 continue; 84 move(CMDLINE, 0); 85 clrtoeol(); 86 } 87 if (ch == erasechar() && col > 0) { 88 if (col == 1 && line[0] == ':') 89 continue; 90 col--; 91 goto doerase; 92 } 93 if (ch == CTRL('w') && col > 0) { 94 while (--col >= 0 && isspace(line[col])) 95 ; 96 col++; 97 while (--col >= 0 && !isspace(line[col])) 98 if (col == 0 && line[0] == ':') 99 break; 100 col++; 101 goto doerase; 102 } 103 if (ch == killchar() && col > 0) { 104 col = 0; 105 if (line[0] == ':') 106 col++; 107 doerase: 108 move(CMDLINE, col); 109 clrtoeol(); 110 continue; 111 } 112 if (isprint(ch) || ch == ' ') { 113 line[col] = ch; 114 mvaddch(CMDLINE, col, ch); 115 col++; 116 } 117 } while (col == 0 || (ch != '\r' && ch != '\n')); 118 line[col] = '\0'; 119 oldmask = sigblock(mask(SIGALRM)); 120 command(line + 1); 121 sigsetmask(oldmask); 122 } 123 /*NOTREACHED*/ 124 } 125