1 /* $NetBSD: keyboard.c,v 1.5 1998/07/12 05:59:00 mrg 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 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 40 #endif 41 __RCSID("$NetBSD: keyboard.c,v 1.5 1998/07/12 05:59:00 mrg Exp $"); 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 46 #include <ctype.h> 47 #include <curses.h> 48 #include <signal.h> 49 #include <termios.h> 50 #include <stdlib.h> 51 52 #include "systat.h" 53 #include "extern.h" 54 55 int 56 keyboard() 57 { 58 char ch, *line; 59 int linesz; 60 sigset_t set; 61 62 sigemptyset(&set); 63 sigaddset(&set, SIGALRM); 64 65 linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */ 66 line = malloc(linesz); 67 if (line == NULL) { 68 error("malloc"); 69 exit(1); 70 } 71 72 for (;;) { 73 col = 0; 74 move(CMDLINE, 0); 75 do { 76 refresh(); 77 ch = getch() & 0177; 78 if (ch == 0177 && ferror(stdin)) { 79 clearerr(stdin); 80 continue; 81 } 82 if (ch >= 'A' && ch <= 'Z') 83 ch += 'a' - 'A'; 84 if (col == 0) { 85 if (ch == CTRL('l')) { 86 sigprocmask(SIG_BLOCK, &set, NULL); 87 wrefresh(curscr); 88 sigprocmask(SIG_UNBLOCK, &set, NULL); 89 continue; 90 } 91 if (ch == CTRL('g')) { 92 sigprocmask(SIG_BLOCK, &set, NULL); 93 status(); 94 sigprocmask(SIG_UNBLOCK, &set, NULL); 95 continue; 96 } 97 if (ch != ':') 98 continue; 99 move(CMDLINE, 0); 100 clrtoeol(); 101 } 102 if (ch == erasechar() && col > 0) { 103 if (col == 1 && line[0] == ':') 104 continue; 105 col--; 106 goto doerase; 107 } 108 if (ch == CTRL('w') && col > 0) { 109 while (--col >= 0 && isspace(line[col])); 110 col++; 111 while (--col >= 0 && !isspace(line[col])) 112 if (col == 0 && line[0] == ':') 113 break; 114 col++; 115 goto doerase; 116 } 117 if (ch == killchar() && col > 0) { 118 if (line[0] == ':') 119 col = 1; 120 else 121 col = 0; 122 doerase: 123 move(CMDLINE, col); 124 clrtoeol(); 125 continue; 126 } 127 if (isprint(ch) || ch == ' ') { 128 if (col < linesz) { 129 line[col] = ch; 130 mvaddch(CMDLINE, col, ch); 131 col++; 132 } 133 } 134 } while (col == 0 || (ch != '\r' && ch != '\n')); 135 line[col] = '\0'; 136 sigprocmask(SIG_BLOCK, &set, NULL); 137 command(line + 1); 138 sigprocmask(SIG_UNBLOCK, &set, NULL); 139 } 140 /* NOTREACHED */ 141 } 142