public static void MapEscape(byte[] dataIn, int offsetIn, int lengthIn, Escape escape)
{
int num = 0;
EscapeState state = escape.State;
int num2 = offsetIn;
while (lengthIn > 0)
{
byte b = dataIn[offsetIn];
EscapeSequence sequence;
switch (escape.State)
{
case EscapeState.Begin:
if (b == 27)
{
escape.State = EscapeState.Esc_1;
}
else
{
if (b == 14)
{
sequence = EscapeSequence.ShiftOut;
goto IL_33B;
}
if (b == 15)
{
sequence = EscapeSequence.ShiftIn;
goto IL_33B;
}
escape.BytesInCurrentBuffer = 0;
escape.TotalBytes = 0;
escape.Sequence = EscapeSequence.None;
return;
}
break;
case EscapeState.Esc_1:
if (b == 36)
{
escape.State = EscapeState.Esc_Dollar_2;
}
else if (b == 40)
{
escape.State = EscapeState.Esc_OpenParen_2;
}
else
{
if (b == 72)
{
sequence = EscapeSequence.NECKanjiIn;
goto IL_33B;
}
if (b == 75)
{
sequence = EscapeSequence.JisX0208_Nec;
goto IL_33B;
}
if (b == 38)
{
escape.State = EscapeState.Esc_Ampersand_2;
}
else
{
if (b == 27)
{
goto IL_2C6;
}
if (b == 14 || b == 15)
{
goto IL_2CF;
}
if (b == 0)
{
goto IL_366;
}
goto IL_366;
}
}
break;
case EscapeState.Esc_Dollar_2:
if (b == 64)
{
sequence = EscapeSequence.JisX0208_1983;
goto IL_33B;
}
if (b == 65)
{
sequence = EscapeSequence.Gb2312_1980;
goto IL_33B;
}
if (b == 66)
{
sequence = EscapeSequence.JisX0208_1978;
goto IL_33B;
}
if (b == 40)
{
escape.State = EscapeState.Esc_Dollar_OpenParen_3;
}
else if (b == 41)
{
escape.State = EscapeState.Esc_Dollar_CloseParen_3;
}
else
{
if (b == 27)
{
goto IL_2C6;
}
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
}
break;
case EscapeState.Esc_OpenParen_2:
if (b == 73)
{
sequence = EscapeSequence.JisX0201K_1976;
goto IL_33B;
}
if (b == 74)
{
sequence = EscapeSequence.JisX0201_1976;
goto IL_33B;
}
if (b == 68)
{
sequence = EscapeSequence.JisX0212_1990;
goto IL_33B;
}
if (b == 66)
{
sequence = EscapeSequence.Iso646Irv;
goto IL_33B;
}
if (b == 27)
{
goto IL_2C6;
}
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
case EscapeState.Esc_Ampersand_2:
if (b == 64)
{
escape.State = EscapeState.Esc_Ampersand_At_3;
}
else
{
if (b == 27)
{
goto IL_2C6;
}
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
}
break;
case EscapeState.Esc_K_2:
goto IL_2F9;
case EscapeState.Esc_Dollar_OpenParen_3:
if (b == 71)
{
sequence = EscapeSequence.Cns11643_1992_1;
goto IL_33B;
}
if (b == 67)
{
sequence = EscapeSequence.Kcs5601_1987;
goto IL_33B;
}
if (b == 72)
{
sequence = EscapeSequence.Cns11643_1992_1;
goto IL_33B;
}
if (b == 81)
{
sequence = EscapeSequence.Unknown_1;
goto IL_33B;
}
if (b == 27)
{
goto IL_2C6;
}
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
case EscapeState.Esc_Dollar_CloseParen_3:
if (b == 67)
{
sequence = EscapeSequence.EucKsc;
goto IL_33B;
}
if (b == 27)
{
goto IL_2C6;
}
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
case EscapeState.Esc_Ampersand_At_3:
if (b == 27)
{
escape.State = EscapeState.Esc_Ampersand_At_Esc_4;
}
else
{
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
}
break;
case EscapeState.Esc_Ampersand_At_Esc_4:
if (b == 36)
{
escape.State = EscapeState.Esc_Ampersand_At_Esc_Dollar_5;
}
else
{
if (b == 27)
{
goto IL_2C6;
}
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
}
break;
case EscapeState.Esc_Ampersand_At_Esc_Dollar_5:
if (b == 66)
{
sequence = EscapeSequence.JisX0208_1990;
goto IL_33B;
}
if (b == 27)
{
goto IL_2C6;
}
if (b == 14)
{
goto IL_2CF;
}
if (b == 15)
{
goto IL_2CF;
}
goto IL_366;
case EscapeState.Esc_Esc_Reset:
goto IL_2C6;
case EscapeState.Esc_SISO_Reset:
goto IL_2CF;
default:
goto IL_2F9;
}
IL_304:
lengthIn--;
offsetIn++;
num++;
continue;
IL_2C6:
escape.State = EscapeState.Esc_1;
goto IL_304;
IL_2CF:
if (b == 14)
{
sequence = EscapeSequence.ShiftOut;
goto IL_33B;
}
if (b == 15)
{
sequence = EscapeSequence.ShiftIn;
goto IL_33B;
}
throw new InvalidOperationException(string.Format("MapEscape: at Esc_SISO_Reset with {0}", (int)b));
IL_2F9:
throw new InvalidOperationException("MapEscape: unrecognized state!");
IL_33B:
escape.BytesInCurrentBuffer = num + 1;
escape.TotalBytes += escape.BytesInCurrentBuffer;
escape.State = EscapeState.Begin;
escape.Sequence = sequence;
return;
IL_366:
string text = string.Empty;
while (num2 <= offsetIn && num2 < offsetIn + lengthIn)
{
text += dataIn[num2++].ToString("X2");
}
string.Format("Unrecognized escape sequence {0}, initial state {1}, current state {2}", text, state.ToString(), escape.State.ToString());
escape.State = EscapeState.Begin;
escape.Sequence = EscapeSequence.NotRecognized;
escape.BytesInCurrentBuffer = num;
escape.TotalBytes += num;
return;
}
escape.BytesInCurrentBuffer = num;
escape.TotalBytes += escape.BytesInCurrentBuffer;
escape.Sequence = EscapeSequence.Incomplete;
}
public override async Task AddByte(byte b)
{
switch (_escapeState)
{
case EscapeState.Normal:
if (b == 0x1b)
{
_escapeState = EscapeState.Escape;
break;
}
else
{
await base.AddByte(b);
}
break;
case EscapeState.Escape:
switch ((char)b)
{
case 'P':
// Start Device Control String
_escapeState = EscapeState.DcsSequence;
break;
case ']':
// Start Operating System Command
_escapeState = EscapeState.OscSequence;
break;
case '^':
// Start Privacy Message
_escapeState = EscapeState.PmSequence;
break;
case '_':
// Start Application Program Command
_escapeState = EscapeState.ApcSequence;
break;
default:
// Send the escape byte and this byte to the client
await base.AddByte(0x1b);
await base.AddByte(b);
_escapeState = EscapeState.Normal;
break;
}
break;
default:
if (_escapeState.HasFlag(EscapeState.Escape))
{
// Previous byte was escape
_escapeState &= ~EscapeState.Escape;
b = (byte)((b >= 0x40 && b <= 0x5f) ? (b + 0x40) : 0);
}
if ((b >= 0x08 && b <= 0x0d) || (b >= 0x20 && b <= 0x7e))
{
_commandStringBuilder.Append((char)b);
}
else if (b == 0x1b)
{
_escapeState |= EscapeState.Escape;
}
else if (b == 0x9C || b == 0x07)
{
// Finalise command with String Terminator or Bell.
var commandString = _commandStringBuilder.ToString();
switch (_escapeState)
{
case EscapeState.DcsSequence:
await _terminal.Dcs(commandString);
break;
case EscapeState.OscSequence:
await _terminal.Osc(commandString);
break;
case EscapeState.PmSequence:
await _terminal.Pm(commandString);
break;
case EscapeState.ApcSequence:
await _terminal.Apc(commandString);
break;
}
_commandStringBuilder.Clear();
_escapeState = EscapeState.Normal;
}
else
{
await _terminal.Error("Unexpected character in " + _escapeState.ToString());
_commandStringBuilder.Clear();
_escapeState = EscapeState.Normal;
}
break;
}
}