文件io

1.

bool DataLoaderController::GetDBIdFromFile() {
  FILE *f;
  if (f= fopen(kDBIdFilePath, "r")) {
    DBIdBuffer db_id_buffer;
    size_t ret = fread(&db_id_buffer, sizeof(DBIdBuffer), 1, f);
    if (ret == 1) {
      online_video_db_id_ = db_id_buffer.online_video_db_id_;
      hotshare_video_db_id_ = db_id_buffer.hotshare_video_db_id_;
      hotshare_album_db_id_ = db_id_buffer.hotshare_album_db_id_;
      hotshare_db_insert_count_ = db_id_buffer.hotshare_db_insert_count_;
      MCE_DEBUG("DataLoaderController::GetDBIdFromFile()  ----> online_video_db_id_:"<<online_video_db_id_<<"   hotshare_video_db_id:"<<hotshare_video_db_id_
          <<"   hotshare_album_db_id_:"<<hotshare_album_db_id_<<"    hotshare_db_insert_count_:"<<hotshare_db_insert_count_);
    } else {
      MCE_WARN("DataLoaderController::GetDBIdFromFile()  ----> Fail to get dbids from dbid.conf.");
    }   
    fclose(f);
    return true;
  } else {
    MCE_WARN("DataLoaderController::GetDBIdFromFile()  ----> Fail to open dbid.conf.");
  }
  return false;
}

2.

bool IMWindowManagerI::GetUserListFromFile(const string file_path, set<Ice::Int> &temp_users) {
  TimeStat ts;
  bool ret =true;
  ifstream ifile(file_path.c_str()) ;
  if (!ifile) {
    MCE_WARN("IMWindowManagerI::GetReceiversFromFile   Fail to open file ,path:" << file_path);
    ret = false;
  }
  if (ret) {
    char buf[128];
    for(int i=0; !ifile.eof(); i++) {
      if (ifile.getline(buf , sizeof(buf)-1).good()) {
        Ice::Int id = atoi(buf);
        if (id >0)
          temp_users.insert(id);
      } else {
        ret = false;
        break;
      }    
    }    
  }
  MCE_INFO("IMWindowManagerI::GetWhiteListFromFile----> usetime : " << ts.getTime() << "temp_users.size:" << temp_users.size() << " file_path:" << file_path);
  return ret;
}