lib/libvgl/keyboard.c

   1 /*-
   2  * Copyright (c) 1997 Søren Schmidt
   3  * 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  *    in this position and unchanged.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/lib/libvgl/keyboard.c,v 1.3 1999/08/28 00:05:55 peter Exp $
  29  * $DragonFly: src/lib/libvgl/keyboard.c,v 1.3 2008/09/30 16:57:06 swildner Exp $
  30  */
  31
  32 #include <stdio.h>
  33 #include <sys/types.h>
  34 #include <sys/ioctl.h>
  35 #include <termios.h>
  36 #include <sys/time.h>
  37 #include <machine/console.h>
  38 #include "vgl.h"
  39
  40 static struct termios VGLKeyboardTty;
  41 static int VGLKeyboardMode = -1;
  42
  43 int
  44 VGLKeyboardInit(int mode)
  45 {
  46   static struct termios term;
  47
  48   ioctl(0, KDGKBMODE, &VGLKeyboardMode);
  49   tcgetattr(0, &VGLKeyboardTty);
  50
  51   term = VGLKeyboardTty;
  52   cfmakeraw(&term);
  53   term.c_iflag = IGNPAR | IGNBRK;
  54   term.c_oflag = 0;
  55   term.c_cflag = CREAD | CS8;
  56   term.c_lflag &= ~(ICANON | ECHO | ISIG);
  57   term.c_cc[VTIME] = 0;
  58   term.c_cc[VMIN] = 0;
  59   cfsetispeed(&term, 9600);
  60   cfsetospeed(&term, 9600);
  61   tcsetattr(0, TCSANOW, &term);
  62
  63   switch (mode) {
  64   case VGL_RAWKEYS:
  65     ioctl(0, KDSKBMODE, K_RAW);
  66     break;
  67   case VGL_CODEKEYS:
  68     ioctl(0, KDSKBMODE, K_CODE);
  69     break;
  70   case VGL_XLATEKEYS:
  71     ioctl(0, KDSKBMODE, K_XLATE);
  72     break;
  73   }
  74   return 0;
  75 }
  76
  77 void
  78 VGLKeyboardEnd(void)
  79 {
  80   if (VGLKeyboardMode != -1) {
  81     ioctl(0, KDSKBMODE, VGLKeyboardMode);
  82     tcsetattr(0, TCSANOW, &VGLKeyboardTty);
  83   }
  84 }
  85
  86 int
  87 VGLKeyboardGetCh(void)
  88 {
  89   unsigned char ch = 0;
  90
  91   read (0, &ch, 1);
  92   return (int)ch;
  93 }