readytoread.cc

来自「2007年机器人足球世界杯3D仿真组亚军」· CC 代码 · 共 48 行

#include "monitorserver.hh"
#include <sstream>
#include <iostream>

using namespace std;
using namespace bats;

bool MonitorServer::ready_to_read(SocketInfo &info)
{
  if (info.data == 0)
    return false;

  Data* data = reinterpret_cast<Data*>(info.data);
  
  // Read in from socket
  char buffer[2048];
  int len;
  unsigned bufferLeft = 2048 - data->bufLen;
  while ((len = info.socket.read(buffer, bufferLeft)) && bufferLeft != 0)
  {
    if (len == -1)
      break;
    memcpy(data->buffer + data->bufLen, buffer, len );
    data->bufLen += len;
    bufferLeft = 2048 - data->bufLen;
  }
  
  string b(data->buffer, data->buffer + data->bufLen);
  
  // Process buffer
  while (data->bufLen > 0)
  {
    uint32_t size;
    memcpy(&size, data->buffer, sizeof(size));
    if (data->bufLen >= size + sizeof(size))
    {
      string msg(data->buffer + sizeof(size), data->buffer + sizeof(size) + size);
      memmove(data->buffer, data->buffer + sizeof(size) + size, data->bufLen - (sizeof(size) + size));
      data->bufLen -= sizeof(size) + size;
      parseMessage(*reinterpret_cast<Data*>(info.data), msg);
    }
    else
      break;
  }
  
  return false; // returns false, to stay in read mode.
}