C++ CStdString::substr方法代码示例

bool CScraperUrl::Get(const SUrlEntry& scrURL, std::string& strHTML, XFILE::CCurlFile& http, const CStdString& cacheContext)
{
  CURL url(scrURL.m_url);
  http.SetReferer(scrURL.m_spoof);
  CStdString strCachePath;

  if (scrURL.m_isgz)
    http.SetContentEncoding("gzip");

  if (!scrURL.m_cache.IsEmpty())
  {
    URIUtils::AddFileToFolder(g_advancedSettings.m_cachePath,
                              "scrapers/"+cacheContext+"/"+scrURL.m_cache,
                              strCachePath);
    if (XFILE::CFile::Exists(strCachePath))
    {
      XFILE::CFile file;
      file.Open(strCachePath);
      char* temp = new char[(int)file.GetLength()];
      file.Read(temp,file.GetLength());
      strHTML.clear();
      strHTML.append(temp,temp+file.GetLength());
      file.Close();
      delete[] temp;
      return true;
    }
  }

  CStdString strHTML1(strHTML);

  if (scrURL.m_post)
  {
    CStdString strOptions = url.GetOptions();
    strOptions = strOptions.substr(1);
    url.SetOptions("");

    if (!http.Post(url.Get(), strOptions, strHTML1))
      return false;
  }
  else
    if (!http.Get(url.Get(), strHTML1))
      return false;

  strHTML = strHTML1;

  if (scrURL.m_url.Find(".zip") > -1 )
  {
    XFILE::CZipFile file;
    CStdString strBuffer;
    int iSize = file.UnpackFromMemory(strBuffer,strHTML,scrURL.m_isgz);
    if (iSize)
    {
      strHTML.clear();
      strHTML.append(strBuffer.c_str(),strBuffer.data()+iSize);
    }
  }

  if (!scrURL.m_cache.IsEmpty())
  {
    CStdString strCachePath;
    URIUtils::AddFileToFolder(g_advancedSettings.m_cachePath,
                              "scrapers/"+cacheContext+"/"+scrURL.m_cache,
                              strCachePath);
    XFILE::CFile file;
    if (file.OpenForWrite(strCachePath,true))
      file.Write(strHTML.data(),strHTML.size());
    file.Close();
  }
  return true;
}

bool CZeroconfDirectory::GetDirectory(const CStdString& strPath, CFileItemList &items)
{
  assert(strPath.substr(0, 11) == "zeroconf://");
  CStdString path = strPath.substr(11, strPath.length());
  URIUtils::RemoveSlashAtEnd(path);
  if(path.empty())
  {
    std::vector<CZeroconfBrowser::ZeroconfService> found_services = CZeroconfBrowser::GetInstance()->GetFoundServices();
    for(std::vector<CZeroconfBrowser::ZeroconfService>::iterator it = found_services.begin(); it != found_services.end(); ++it)
    {
      //only use discovered services we can connect to through directory
      CStdString tmp;
      if(GetXBMCProtocol(it->GetType(), tmp))
      {
        CFileItemPtr item(new CFileItem("", true));
        CURL url;
        url.SetProtocol("zeroconf");
        CStdString service_path = CZeroconfBrowser::ZeroconfService::toPath(*it);
        CURL::Encode(service_path);
        url.SetFileName(service_path);
        item->SetPath(url.Get());

        //now do the formatting
        CStdString protocol = GetHumanReadableProtocol(it->GetType());
        item->SetLabel(it->GetName() + " (" + protocol  + ")");
        item->SetLabelPreformated(true);
        //just set the default folder icon
        item->FillInDefaultIcon();
        items.Add(item);
      }
    }
    return true;
  } 
  else
  {
    //decode the path first
    CStdString decoded = path;
    CURL::Decode(decoded);
    try
    {
      CZeroconfBrowser::ZeroconfService zeroconf_service = CZeroconfBrowser::ZeroconfService::fromPath(decoded);

      if(!CZeroconfBrowser::GetInstance()->ResolveService(zeroconf_service))
      {
        CLog::Log(LOGINFO, "CZeroconfDirectory::GetDirectory service ( %s ) could not be resolved in time", zeroconf_service.GetName().c_str());
        return false;
      }
      else
      {
        assert(!zeroconf_service.GetIP().empty());
        CURL service;
        service.SetPort(zeroconf_service.GetPort());
        service.SetHostName(zeroconf_service.GetIP());
        //do protocol conversion (_smb._tcp -> smb)
        //ToDo: try automatic conversion -> remove leading '_' and '._tcp'?
        CStdString protocol;
        if(!GetXBMCProtocol(zeroconf_service.GetType(), protocol))
        {
          CLog::Log(LOGERROR, "CZeroconfDirectory::GetDirectory Unknown service type (%s), skipping; ", zeroconf_service.GetType().c_str());
          return false;
        }
        
        service.SetProtocol(protocol);
        
        //first try to show the txt-record defined path if any
        if(GetDirectoryFromTxtRecords(zeroconf_service, service, items))
        {
          return true;
        }
        else//no txt record path - so let the CDirectory handler show the folders
        {          
          return CDirectory::GetDirectory(service.Get(), items, "", DIR_FLAG_ALLOW_PROMPT); 
        }
      }
    } catch (std::runtime_error& e) {
      CLog::Log(LOGERROR, "CZeroconfDirectory::GetDirectory failed getting directory: '%s'. Error: '%s'", decoded.c_str(), e.what());
      return false;
    }
  }
}