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 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifdef lint 39 static const char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 40 #endif 41 42 #include <ctype.h> 43 #include <signal.h> 44 #include <termios.h> 45 46 #include "systat.h" 47 #include "extern.h" 48 49 int 50 keyboard(void) 51 { 52 char ch, line[80]; 53 int oldmask; 54 55 for (;;) { 56 col = 0; 57 move(CMDLINE, 0); 58 do { 59 refresh(); 60 ch = getch() & 0177; 61 if (ch == 0177 && ferror(stdin)) { 62 clearerr(stdin); 63 continue; 64 } 65 if (ch >= 'A' && ch <= 'Z') 66 ch += 'a' - 'A'; 67 if (col == 0) { 68 #define mask(s) (1 << ((s) - 1)) 69 if (ch == CTRL('l')) { 70 oldmask = sigblock(mask(SIGALRM)); 71 wrefresh(curscr); 72 sigsetmask(oldmask); 73 continue; 74 } 75 if (ch == CTRL('g')) { 76 oldmask = sigblock(mask(SIGALRM)); 77 status(); 78 sigsetmask(oldmask); 79 continue; 80 } 81 if (ch != ':') 82 continue; 83 move(CMDLINE, 0); 84 clrtoeol(); 85 } 86 if (ch == erasechar() && col > 0) { 87 if (col == 1 && line[0] == ':') 88 continue; 89 col--; 90 goto doerase; 91 } 92 if (ch == CTRL('w') && col > 0) { 93 while (--col >= 0 && isspace(line[col])) 94 ; 95 col++; 96 while (--col >= 0 && !isspace(line[col])) 97 if (col == 0 && line[0] == ':') 98 break; 99 col++; 100 goto doerase; 101 } 102 if (ch == killchar() && col > 0) { 103 col = 0; 104 if (line[0] == ':') 105 col++; 106 doerase: 107 move(CMDLINE, col); 108 clrtoeol(); 109 continue; 110 } 111 if (isprint(ch) || ch == ' ') { 112 line[col] = ch; 113 mvaddch(CMDLINE, col, ch); 114 col++; 115 } 116 } while (col == 0 || (ch != '\r' && ch != '\n')); 117 line[col] = '\0'; 118 oldmask = sigblock(mask(SIGALRM)); 119 command(line + 1); 120 sigsetmask(oldmask); 121 } 122 /*NOTREACHED*/ 123 } 124