Add rudimentary support for using the keyboard.

1 files changed, 90 insertions, 0 deletions

diff --git a/lib/libvgl/keyboard.c b/lib/libvgl/keyboard.c
new file mode 100644
index 0000000..334d973
--- /dev/null
+++ b/lib/libvgl/keyboard.c
@@ -0,0 +1,90 @@
+/*-
+ * Copyright (c) 1997 Søren Schmidt
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  $Id$
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+#include <sys/time.h>
+#include <machine/console.h>
+#include "vgl.h"
+
+static struct termios VGLKeyboardTty;
+static int VGLKeyboardMode = -1;
+
+int
+VGLKeyboardInit(int mode)
+{
+  static struct termios term;
+
+  ioctl(0, KDGKBMODE, &VGLKeyboardMode);
+  tcgetattr(0, &VGLKeyboardTty);
+
+  term = VGLKeyboardTty;
+  term.c_iflag = IGNPAR | IGNBRK;
+  term.c_oflag = 0;
+  term.c_cflag = CREAD | CS8;
+  term.c_lflag &= ~(ICANON | ECHO | ISIG);
+  term.c_cc[VTIME] = 0;
+  term.c_cc[VMIN] = 0;
+  cfsetispeed(&term, 9600);
+  cfsetospeed(&term, 9600);
+  tcsetattr(0, TCSANOW, &term);
+
+  switch (mode) {
+  case VGL_RAWKEYS:
+    ioctl(0, KDSKBMODE, K_RAW);
+    break;
+  case VGL_CODEKEYS:
+    ioctl(0, KDSKBMODE, K_CODE);
+    break;
+  case VGL_XLATEKEYS:
+    ioctl(0, KDSKBMODE, K_XLATE);
+    break;
+  }
+  return 0;
+}
+
+void
+VGLKeyboardEnd()
+{
+  if (VGLKeyboardMode != -1)
+    ioctl(0, KDSKBMODE, VGLKeyboardMode);
+  tcsetattr(0, TCSANOW, &VGLKeyboardTty);
+}
+
+int
+VGLKeyboardGetCh()
+{
+  unsigned char ch = 0;
+
+  read (0, &ch, 1);
+  return (int)ch;
+}