ESP8266WebServer.cpp

struct storeArgHandler
{
  void operator(RequestArgument &arg, const String & data, int pos, int key_end_pos) //args are local vars
  {
    arg.key = urlDecode(data.substring(pos, key_end_pos));

    if (   (equal_index != -1) && ( (equal_index < next_index - 1) || (next_index == -1)) )
      arg.value = urlDecode(data.substring(equal_index + 1, next_index - 1));
      
#ifdef DEBUG_ESP_HTTP_SERVER	#ifdef DEBUG_ESP_HTTP_SERVER
    DEBUG_OUTPUT.print("arg ");	        DEBUG_OUTPUT.print("arg ");
    DEBUG_OUTPUT.print(iarg);	        DEBUG_OUTPUT.print(arg_total);
    DEBUG_OUTPUT.print(" key: ");	        DEBUG_OUTPUT.print(" key: ");
    DEBUG_OUTPUT.print(arg.key);	        DEBUG_OUTPUT.print(arg.key);
    DEBUG_OUTPUT.print(" value: ");	        DEBUG_OUTPUT.print(" value: ");
    DEBUG_OUTPUT.println(arg.value);	        DEBUG_OUTPUT.println(arg.value);
#endif 
  }
  
};


struct nullArgHandler
{
  void operator(RequestArgument &arg, const String & data, int pos, int key_end_pos) {} //args are local vars
};


int ESP8266WebServer::_parseArgumentsCore(const String& data, func)
{
  size_t pos = 0;
  int arg_total = 0;
  ...
  while(true)
  {
    ...
    func(_currentArgs[arg_total], data, pos, key_end_pos, equal_index, next_index);

    ...
  }
  ...
  return arg_total;
}

int ESP8266WebServer::_parseArguments(const String& data)
{
  int counted = _parseArgumentsCore(data, nullArgHandler());
  if(_currentArgs)
  {
    delete[] _currentArgs;
    _currentArgs = 0;
    _currentArgs = new RequestArgument[(_currentArgCount = counted) + 1];
  }
  _parseArgumentsCore(data, storeArgHandler());
  _currentArgCount = counted;
  return counted;
}