1 /*- 2 * Copyright (c) 1980, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 36 #endif /* not lint */ 37 38 #include <ctype.h> 39 #include <signal.h> 40 #include <termios.h> 41 42 #include "systat.h" 43 #include "extern.h" 44 45 int 46 keyboard() 47 { 48 char ch, line[80]; 49 int oldmask; 50 51 for (;;) { 52 col = 0; 53 move(CMDLINE, 0); 54 do { 55 refresh(); 56 ch = getch() & 0177; 57 if (ch == 0177 && ferror(stdin)) { 58 clearerr(stdin); 59 continue; 60 } 61 if (ch >= 'A' && ch <= 'Z') 62 ch += 'a' - 'A'; 63 if (col == 0) { 64 #define mask(s) (1 << ((s) - 1)) 65 if (ch == CTRL('l')) { 66 oldmask = sigblock(mask(SIGALRM)); 67 wrefresh(curscr); 68 sigsetmask(oldmask); 69 continue; 70 } 71 if (ch == CTRL('g')) { 72 oldmask = sigblock(mask(SIGALRM)); 73 status(); 74 sigsetmask(oldmask); 75 continue; 76 } 77 if (ch != ':') 78 continue; 79 move(CMDLINE, 0); 80 clrtoeol(); 81 } 82 if (ch == erasechar() && col > 0) { 83 if (col == 1 && line[0] == ':') 84 continue; 85 col--; 86 goto doerase; 87 } 88 if (ch == CTRL('w') && col > 0) { 89 while (--col >= 0 && isspace(line[col])) 90 ; 91 col++; 92 while (--col >= 0 && !isspace(line[col])) 93 if (col == 0 && line[0] == ':') 94 break; 95 col++; 96 goto doerase; 97 } 98 if (ch == killchar() && col > 0) { 99 col = 0; 100 if (line[0] == ':') 101 col++; 102 doerase: 103 move(CMDLINE, col); 104 clrtoeol(); 105 continue; 106 } 107 if (isprint(ch) || ch == ' ') { 108 line[col] = ch; 109 mvaddch(CMDLINE, col, ch); 110 col++; 111 } 112 } while (col == 0 || (ch != '\r' && ch != '\n')); 113 line[col] = '\0'; 114 oldmask = sigblock(mask(SIGALRM)); 115 command(line + 1); 116 sigsetmask(oldmask); 117 } 118 /*NOTREACHED*/ 119 } 120