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 <errno.h> 43 #include <ctype.h> 44 #include <signal.h> 45 #include <stdlib.h> 46 #include <termios.h> 47 48 #include "systat.h" 49 #include "extern.h" 50 51 int 52 keyboard(void) 53 { 54 char ch, line[80]; 55 int oldmask; 56 57 for (;;) { 58 col = 0; 59 move(CMDLINE, 0); 60 do { 61 refresh(); 62 ch = getch(); 63 if (ch == ERR) { 64 if (errno == EINTR) 65 continue; 66 exit(1); 67 } 68 if (ch >= 'A' && ch <= 'Z') 69 ch += 'a' - 'A'; 70 if (col == 0) { 71 #define mask(s) (1 << ((s) - 1)) 72 if (ch == CTRL('l')) { 73 oldmask = sigblock(mask(SIGALRM)); 74 wrefresh(curscr); 75 sigsetmask(oldmask); 76 continue; 77 } 78 if (ch == CTRL('g')) { 79 oldmask = sigblock(mask(SIGALRM)); 80 status(); 81 sigsetmask(oldmask); 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 ; 98 col++; 99 while (--col >= 0 && !isspace(line[col])) 100 if (col == 0 && line[0] == ':') 101 break; 102 col++; 103 goto doerase; 104 } 105 if (ch == killchar() && col > 0) { 106 col = 0; 107 if (line[0] == ':') 108 col++; 109 doerase: 110 move(CMDLINE, col); 111 clrtoeol(); 112 continue; 113 } 114 if (isprint(ch) || ch == ' ') { 115 line[col] = ch; 116 mvaddch(CMDLINE, col, ch); 117 col++; 118 } 119 } while (col == 0 || (ch != '\r' && ch != '\n')); 120 line[col] = '\0'; 121 oldmask = sigblock(mask(SIGALRM)); 122 command(line + 1); 123 sigsetmask(oldmask); 124 } 125 /*NOTREACHED*/ 126 } 127