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UBrowser.UBrowserBufferedTcpLink


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//=============================================================================
// UBrowserBufferedTcpLink
//=============================================================================
class UBrowserBufferedTcpLink extends TcpLink;

var string          InputBuffer;
var string          OutputBuffer;

var string          CRLF;
var string          CR;
var string          LF;

var bool            bWaiting;
var float           WaitTimeoutTime;
var string          WaitingFor;
var int             WaitForCountChars;      // if we're waiting for X bytes
var string          WaitResult;
var int             WaitMatchData;

function ResetBuffer()
{
    InputBuffer = "";
    OutputBuffer = "";
    bWaiting = False;
    CRLF = Chr(10)$Chr(13);
    CR = Chr(13);
    LF = Chr(10);
}

function WaitFor(string What, float TimeOut, int MatchData)
{
    bWaiting = True;
    WaitingFor = What;
    WaitForCountChars = 0;
    WaitTimeoutTime = Level.TimeSeconds + TimeOut;
    WaitMatchData = MatchData;
    WaitResult = "";
}

function WaitForCount(int Count, float TimeOut, int MatchData)
{
    bWaiting = True;
    WaitingFor = "";
    WaitForCountChars = Count;
    WaitTimeoutTime = Level.TimeSeconds + TimeOut;
    WaitMatchData = MatchData;
    WaitResult = "";
}

function GotMatch(int MatchData)
{
    // called when a match happens	
}

function GotMatchTimeout(int MatchData)
{
    // when a match times out
}

function string ParseDelimited(string Text, string Delimiter, int Count, optional bool bToEndOfLine)
{
    local string Result;
    local int Found, i;
    local string s;

    Result = "";    
    Found = 1;
    
    for(i=0;i<Len(Text);i++)
    {
        s = Mid(Text, i, 1);
        if(InStr(Delimiter, s) != -1)
        {
            if(Found == Count)
            {
                if(bToEndOfLine)
                    return Result$Mid(Text, i);
                else
                    return Result;
            }

            Found++;            
        }
        else
        {
            if(Found >= Count)
                Result = Result $ s;
        }
    }
    
    return Result;
}

// Read an individual character, returns 0 if no characters waiting
function int ReadChar()
{
    local int c;
    
    if(InputBuffer == "")
        return 0;
    c = Asc(Left(InputBuffer, 1));
    InputBuffer = Mid(InputBuffer, 1);
    return c;
}

// Take a look at the next waiting character, return 0 if no characters waiting
function int PeekChar()
{
    local int c;
    
    if(InputBuffer == "")
        return 0;
    return Asc(Left(InputBuffer, 1));
}

function bool ReadBufferedLine(out string Text)
{
    local int i;

    i = InStr(InputBuffer, Chr(13));
    if(i == -1)
        return False;

    Text = Left(InputBuffer, i);
    if(Mid(InputBuffer, i+1, 1) == Chr(10))
        i++;

    InputBuffer = Mid(InputBuffer, i+1);
    return True;
}

function SendBufferedData(string Text) 
{
    OutputBuffer = OutputBuffer $ Text;
}

event ReceivedText(string Text)
{
    InputBuffer = InputBuffer $ Text;
}

// DoQueueIO is intended to be called from Tick();
function DoBufferQueueIO() 
{
    local int i;

    while(bWaiting)
    {
        if(Level.TimeSeconds > WaitTimeoutTime)
        {
            bWaiting = False;
            GotMatchTimeout(WaitMatchData);
        }
        
        if(WaitForCountChars > 0)
        {
            if(Len(InputBuffer) < WaitForCountChars)
                break;

            WaitResult = Left(InputBuffer, WaitForCountChars);
            InputBuffer = Mid(InputBuffer, WaitForCountChars);
            bWaiting = False;
            GotMatch(WaitMatchData);
        }
        else
        {
            i = InStr(InputBuffer, WaitingFor);
            if(i == -1 && WaitingFor == CR)
                i = InStr(InputBuffer, LF);
            if(i != -1)
            {
                WaitResult = Left(InputBuffer, i + Len(WaitingFor));
                InputBuffer = Mid(InputBuffer, i + Len(WaitingFor));
                bWaiting = False;
                GotMatch(WaitMatchData);
            }
            else
                break;
        }
    }

    if(IsConnected())
    {
        i = SendText(OutputBuffer);
        OutputBuffer = Mid(OutputBuffer, i);
    }
}

defaultproperties
{
     ReceiveMode=RMODE_Event
}

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Class file time: Do 19.5.2005 19:42:12.000 - Creation time: Fr 7.6.2013 13:16:07.769 - Created with UnCodeX