/**
* \brief Parse a buffer and generate a xPL_Message
* \details Line based xPL parser
* \param _xPLMessage the result xPL message
* \param _message the buffer
*/
void xPL::Parse(xPL_Message* _xPLMessage, char* _buffer)
{
int len = strlen(_buffer);
byte j=0;
byte line=0;
int result=0;
char lineBuffer[XPL_LINE_MESSAGE_BUFFER_MAX+1];
// read each character of the message
for(byte i = 0; i < len; i++)
{
// load byte by byte in 'line' buffer, until '\n' is detected
if(_buffer[i] == XPL_END_OF_LINE) // is it a linefeed (ASCII: 10 decimal)
{
++line;
lineBuffer[j]='\0'; // add the end of string id
if(line <= XPL_OPEN_SCHEMA)
{
// first part: header and schema determination
// we analyse the line, function of the line number in the xpl message
result = AnalyseHeaderLine(_xPLMessage, lineBuffer ,line);
}
if(line > XPL_OPEN_SCHEMA)
{
// second part: command line
// we analyse the specific command line, function of the line number in the xpl message
result = AnalyseCommandLine(_xPLMessage, lineBuffer, line-9, j);
if(result == _xPLMessage->command_count+1)
break;
}
if (result < 0) break;
j = 0; // reset the buffer pointer
clearStr(lineBuffer); // clear the buffer
}
else
{
// next character
lineBuffer[j++] = _buffer[i];
}
}
}
//Split header to tokens
int HTTPHandler::AnalyseHeader( string &linesT )
{
//Delete header tokens
tokens.clear();
string::size_type lastposition = 0;
//Do "Tolerant Applications" - RFC 1945 - Hypertext Transfer Protocol -- HTTP/1.0
while ( (lastposition = linesT.find( "\r", lastposition )) != string::npos )
{
linesT.replace( lastposition, 1, "" );
}
lastposition = 0;
string::size_type length = linesT.length();
string::size_type position, positiontmp;
if ( (position = linesT.find( "\n", 0 )) == string::npos )
{
return -201;
}
int ret;
string tempToken, headerbase;
//Read first line with AnalyseFirstHeaderLine
bool First = true;
//Loop through headers
while ( position != string::npos && lastposition != length )
{
tempToken = linesT.substr( lastposition, position - lastposition );
if ( (lastposition = tempToken.find_last_not_of("\t ")) != string::npos )
{
tempToken = tempToken.substr( 0, lastposition + 1 );
if ( First == true )
{
//Analyse request header
if ( (ret = AnalyseFirstHeaderLine( tempToken )) < 0 )
{
return ret;
}
First = false;
}
else
{
if ( (positiontmp = tempToken.find(":")) != string::npos )
{
headerbase = tempToken.substr(0, positiontmp + 1);
headerbase += " ";
//Make sure we have "Header:<SPACE>value"
if ( (positiontmp = tempToken.find_first_not_of(" ", positiontmp + 1)) != string::npos )
{
tempToken = headerbase + tempToken.substr(positiontmp);
if ( (ret = AnalyseHeaderLine( tempToken )) < 0 )
{
return ret;
}
}
}
}
//Add header to send queue
tokens.push_back( tempToken );
}
lastposition = position + 1;
position = linesT.find( "\n", lastposition );
}
return 0;
}
