public ISymCommand ReadCommand()
{
_data += Read();
if (!string.IsNullOrEmpty(_data))
{
string commandStart = Encoding.ASCII.GetString(new byte[] { 0x1b, 0xfe });
string commandEnd = Encoding.ASCII.GetString(new byte[] { 0xfc });
int start = _data.IndexOf(commandStart, StringComparison.Ordinal);
int end = _data.IndexOf(commandEnd, start + commandStart.Length, StringComparison.Ordinal);
while (start >= 0 && end >= start + commandStart.Length)
{
int commandLength = end - start - commandStart.Length;
string commandString = _data.Substring(start + commandStart.Length, commandLength);
SymCommand newCommand = SymCommand.Parse(commandString);
_data = _data.Substring(start + commandStart.Length + commandString.Length);
int dataLength = _data.Length;
if (newCommand.Command == "File")
{
int nextStart = _data.IndexOf(commandStart, StringComparison.Ordinal);
if (nextStart > 2)
{
newCommand.Data = _data.Substring(0, nextStart - 2);
_data = _data.Substring(nextStart);
}
}
_commands.Add(newCommand);
start = _data.IndexOf(commandStart, StringComparison.Ordinal);
end = _data.IndexOf(commandEnd, start + commandStart.Length, StringComparison.Ordinal);
}
}
if (_commandIndex + 1 == _commands.Count)
{
_commands.Clear();
_commandIndex = -1;
}
if (_commands.Count == 0)
{
return(SymCommand.Parse(""));
}
ISymCommand cmd = _commands[++_commandIndex];
if ((cmd.Command == "MsgDlg") && (cmd.HasParameter("Text")))
{
if (cmd.Get("Text").IndexOf("From PID", StringComparison.Ordinal) != -1)
{
cmd = ReadCommand();
}
}
return(cmd);
}
