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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 32 __FBSDID("$FreeBSD$"); 33 34 #ifdef lint 35 static const char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 38 #include <errno.h> 39 #include <ctype.h> 40 #include <signal.h> 41 #include <stdlib.h> 42 #include <termios.h> 43 44 #include "systat.h" 45 #include "extern.h" 46 47 int 48 keyboard(void) 49 { 50 char line[80]; 51 int ch, oldmask; 52 53 for (;;) { 54 col = 0; 55 move(CMDLINE, 0); 56 do { 57 refresh(); 58 ch = getch(); 59 if (ch == ERR) { 60 if (errno == EINTR) 61 continue; 62 exit(1); 63 } 64 if (ch >= 'A' && ch <= 'Z') 65 ch += 'a' - 'A'; 66 if (col == 0) { 67 #define mask(s) (1 << ((s) - 1)) 68 if (ch == CTRL('l')) { 69 oldmask = sigblock(mask(SIGALRM)); 70 wrefresh(curscr); 71 sigsetmask(oldmask); 72 continue; 73 } 74 if (ch == CTRL('g')) { 75 oldmask = sigblock(mask(SIGALRM)); 76 status(); 77 sigsetmask(oldmask); 78 continue; 79 } 80 if (ch != ':') 81 continue; 82 move(CMDLINE, 0); 83 clrtoeol(); 84 } 85 if (ch == erasechar() && col > 0) { 86 if (col == 1 && line[0] == ':') 87 continue; 88 col--; 89 goto doerase; 90 } 91 if (ch == CTRL('w') && col > 0) { 92 while (--col >= 0 && isspace(line[col])) 93 ; 94 col++; 95 while (--col >= 0 && !isspace(line[col])) 96 if (col == 0 && line[0] == ':') 97 break; 98 col++; 99 goto doerase; 100 } 101 if (ch == killchar() && col > 0) { 102 col = 0; 103 if (line[0] == ':') 104 col++; 105 doerase: 106 move(CMDLINE, col); 107 clrtoeol(); 108 continue; 109 } 110 if (isprint(ch) || ch == ' ') { 111 line[col] = ch; 112 mvaddch(CMDLINE, col, ch); 113 col++; 114 } 115 } while (col == 0 || (ch != '\r' && ch != '\n')); 116 line[col] = '\0'; 117 oldmask = sigblock(mask(SIGALRM)); 118 command(line + 1); 119 sigsetmask(oldmask); 120 } 121 /*NOTREACHED*/ 122 } 123