1 /* $NetBSD: keyboard.c,v 1.10 1999/12/20 23:11:50 jwise 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 1.10 1999/12/20 23:11:50 jwise 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, rch, *line; 59 int i, 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 if ((line = malloc(linesz)) == NULL) { 67 error("malloc failed"); 68 die(0); 69 } 70 71 for (;;) { 72 col = 0; 73 move(CMDLINE, 0); 74 75 while (col == 0 || (ch != '\r' && ch != '\n')) { 76 refresh(); 77 ch = getch() & 0177; 78 if (ch == 0177 && ferror(stdin)) { 79 clearerr(stdin); 80 continue; 81 } 82 rch = ch; 83 ch = tolower(ch); 84 if (col == 0) { 85 switch(ch) { 86 case '\n': 87 case '\r': 88 case ' ': 89 display(0); 90 break; 91 case CTRL('l'): 92 sigprocmask(SIG_BLOCK, &set, NULL); 93 wrefresh(curscr); 94 sigprocmask(SIG_UNBLOCK, &set, NULL); 95 break; 96 case CTRL('g'): 97 sigprocmask(SIG_BLOCK, &set, NULL); 98 status(); 99 sigprocmask(SIG_UNBLOCK, &set, NULL); 100 break; 101 case '?': 102 case 'h': 103 command("help"); 104 move(CMDLINE, 0); 105 break; 106 case ':': 107 move(CMDLINE, 0); 108 clrtoeol(); 109 addch(':'); 110 col++; 111 break; 112 } 113 continue; 114 } 115 if (ch == erasechar() && col > 0) { 116 if (col == 1) 117 continue; 118 col--; 119 goto doerase; 120 } 121 if (ch == CTRL('w') && col > 0) { 122 while (--col >= 0 && isspace(line[col])); 123 col++; 124 while (--col >= 0 && !isspace(line[col])) 125 if (col == 0) 126 break; 127 col++; 128 goto doerase; 129 } 130 if (ch == killchar() && col > 0) { 131 col = 1; 132 doerase: 133 move(CMDLINE, col); 134 clrtoeol(); 135 continue; 136 } 137 if (isprint(rch) || rch == ' ') { 138 if (col < linesz) { 139 line[col] = rch; 140 mvaddch(CMDLINE, col, rch); 141 col++; 142 } 143 } 144 } 145 line[col] = '\0'; 146 /* pass commands as lowercase */ 147 for (i = 1; i < col ; i++) 148 line[i] = tolower(line[i]); 149 command(line + 1); 150 } 151 /* NOTREACHED */ 152 } 153