implicitgrantlistenertask.cpp

void ParseHeader(const uint8_t* header, 
				 size_t headerSize, 
				 std::string& verb,
				 std::string& url,
				 urlParameters_t& params)
{
	using std::begin;
	using std::end;
	using std::find;
	using std::find_first_of;
	using std::string;

	const uint8_t urlDelims[] = {' ', '?'};
	const uint8_t newlineDelims[] = {'\n', '\r'};

	const uint8_t* pos = header;
	const uint8_t* endOfLine = find_first_of(pos, pos + headerSize, begin(newlineDelims), end(newlineDelims));

	if (endOfLine != header+headerSize)
	{
		verb = string(pos, find(pos, endOfLine, ' '));
		pos += verb.length();

		if (*pos++ == ' ')
		{
			url = string(pos, find_first_of(pos, endOfLine, begin(urlDelims), end(urlDelims)));
			pos += url.length();

			if (*pos++ == '?')
			{
				const uint8_t* endOfParams = find_first_of (pos, endOfLine, begin(newlineDelims), end(newlineDelims));
				if (endOfParams != pos)
				{
					const uint8_t* delim = nullptr;
					do 
					{
						delim = find(pos, endOfParams, '&');
						const uint8_t* equalSign = find(pos, delim, '=');
						string paramName(pos, equalSign);
						string paramValue;
						if (equalSign != delim)
						{
							paramValue = string (equalSign+1, delim);
						}

						params.push_back( urlParameter_t(paramName, paramValue) );
						
						pos = delim+1;
					} while (delim != endOfParams);
				}
			}
		}
		url.append("blah");
	}
}