public override KeyData[] UnescapeData(Stream inputStream)
{
var keys = new List<KeyData>();
// Read escaped data from input stream.
int inputByte;
KeyData outputKey;
while ((inputByte = inputStream.ReadByte()) != -1)
{
if (_bitMode == TerminalBitMode.Mode7Bit)
{
// Check if current byte is start of control sequence.
if (inputByte == 0x1b) // ESC
{
outputKey = DecodeSequence7Bit(inputStream);
}
else
{
// Normal char
outputKey = new KeyData((byte)inputByte, false);
}
}
else if (_bitMode == TerminalBitMode.Mode8Bit)
{
// Check if current byte is start of control sequence.
outputKey = DecodeSequence8Bit(inputStream);
}
else
{
throw new InvalidOperationException("Bit mode is not valid for unescaping data.");
}
// Add current byte to output.
keys.Add(outputKey);
}
return keys.ToArray();
}
protected void TerminalSendKeys(KeyData[] keys)
{
unsafe
{
var consoleParams = (ConsoleParams*)_consoleHandler.ConsoleParameters.Get();
foreach (var key in keys)
{
// Get virtual-key code for key.
IntPtr vKey = new IntPtr(key.IsVirtualKey ? key.Value : WinApi.VkKeyScan(
(char)key.Value));
// Send Key Down and then Key Up messages to console window.
WinApi.PostMessage(consoleParams->ConsoleWindowHandle, WinApi.WM_KEYDOWN, vKey,
CreateWmKeyDownLParam(1, 0, false, false, 0));
WinApi.PostMessage(consoleParams->ConsoleWindowHandle, WinApi.WM_KEYUP, vKey,
CreateWmKeyDownLParam(1, 0, false, true, 1));
}
}
}
protected KeyData DecodeSequence8Bit(Stream inputStream)
{
var keyData = new KeyData(0, true);
// Read control character.
var controlChar = (byte)inputStream.ReadByte();
switch (controlChar)
{
case 0x9b: // CSI
keyData.Value = DecodeControlSequence(inputStream);
break;
default:
keyData.Value = controlChar;
keyData.IsVirtualKey = false;
break;
}
return keyData;
}
protected KeyData DecodeSequence7Bit(Stream inputStream)
{
var keyData = new KeyData(0, true);
// Read control character.
var controlChar = (byte)inputStream.ReadByte();
switch ((char)controlChar)
{
case '[': // CSI
keyData.Value = DecodeControlSequence(inputStream);
break;
default:
XtermHelper.ThrowUnrecognisedCharException("Unrecognised 7-bit control character",
controlChar);
break;
}
return keyData;
}
