1 /* $NetBSD: keyboard.c,v 1.26 2015/08/23 18:33:15 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: keyboard.c,v 1.26 2015/08/23 18:33:15 mrg Exp $"); 38 #endif /* not lint */ 39 40 #include <sys/types.h> 41 42 #include <ctype.h> 43 #include <signal.h> 44 #include <termios.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <signal.h> 48 49 #include "systat.h" 50 #include "extern.h" 51 52 extern sig_atomic_t needsredraw; 53 54 void 55 keyboard(void) 56 { 57 int ch, rch, col; 58 char *line; 59 int i, linesz; 60 static char help[] = "help"; 61 static char quit[] = "quit"; 62 63 ch = 0; /* XXX gcc */ 64 linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */ 65 if ((line = malloc(linesz)) == NULL) { 66 error("malloc failed"); 67 die(0); 68 } 69 70 for (;;) { 71 col = 0; 72 move(CMDLINE, 0); 73 74 while (col == 0 || (ch != '\r' && ch != '\n')) { 75 refresh(); 76 for (;;) { 77 ch = getch(); 78 if (!needsredraw) 79 break; 80 redraw(); 81 } 82 if (ch == ERR) { 83 display(SIGALRM); 84 continue; 85 } 86 if (ch == KEY_RESIZE) { 87 redraw(); 88 continue; 89 } 90 ch &= 0177; 91 rch = ch; 92 if (col == 0) { 93 switch(ch) { 94 case '\n': 95 case '\r': 96 case ' ': 97 clearerror(); 98 display(0); 99 break; 100 case CTRL('l'): 101 clearerror(); 102 wrefresh(curscr); 103 break; 104 case CTRL('g'): 105 status(); 106 break; 107 case '?': 108 case 'H': 109 case 'h': 110 command(help); 111 move(CMDLINE, 0); 112 break; 113 case 'Q': 114 case 'q': 115 command(quit); 116 break; 117 case ':': 118 move(CMDLINE, 0); 119 clrtoeol(); 120 addch(':'); 121 col++; 122 break; 123 } 124 continue; 125 } 126 if (ch == '\b' || ch == '\177' || ch == erasechar()) { 127 if (col > 0) 128 col--; 129 goto doerase; 130 } 131 if (ch == CTRL('w') && col > 0) { 132 while (--col >= 0 && 133 isspace((unsigned char)line[col])) 134 continue; 135 col++; 136 while (--col >= 0 && 137 !isspace((unsigned char)line[col])) 138 if (col == 0) 139 break; 140 col++; 141 goto doerase; 142 } 143 if (ch == killchar() && col > 0) { 144 col = 1; 145 doerase: 146 move(CMDLINE, col); 147 clrtoeol(); 148 continue; 149 } 150 if (isprint(rch) || rch == ' ') { 151 if (col < linesz) { 152 line[col] = rch; 153 mvaddch(CMDLINE, col, rch); 154 col++; 155 } 156 } 157 } 158 line[col] = '\0'; 159 /* pass commands as lowercase */ 160 for (i = 1; i < col ; i++) 161 line[i] = tolower((unsigned char)line[i]); 162 command(line + 1); 163 } 164 /* NOTREACHED */ 165 } 166