C++ (Cpp) IXmlReader::SetInput Examples

Example #1

File: xmlreader.cpp Project: Rastaban/ChakraCore

Node *
ReadFile
(
   const char * fileName
)
{
   IStream * pStream;
   IXmlReader * pReader;

   HANDLE fileHandle = CreateFile(fileName, FILE_GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, 0, nullptr);
   if (fileHandle == INVALID_HANDLE_VALUE)
   {
      Fatal("Cannot open XML file %s", fileName);
   }

   if (FAILED(CreateStreamOnHandle(fileHandle, &pStream)))
   {
      Fatal("Cannot create stream from file");
   }

   if (FAILED(CreateXmlReader(__uuidof(IXmlReader), (void**) &pReader, nullptr)))
   {
      Fatal("Cannot create XML reader");
   }

   if (FAILED(pReader->SetProperty(XmlReaderProperty_DtdProcessing, DtdProcessing_Prohibit)))
   {
      Fatal("Cannot prohibit DTD processing");
   }

   if (FAILED(pReader->SetInput(pStream)))
   {
      Fatal("Cannot set XML reader input");
   }

   Node * topNode;
   if (FAILED(ParseXml(pReader, &topNode)))
   {
      unsigned int line, linePos;
      pReader->GetLineNumber(&line);
      pReader->GetLinePosition(&linePos);
      fprintf(
         stderr,
         "Error on line %d, position %d in \"%s\".\n",
         line,
         linePos,
         fileName);
      Fatal("Error parsing XML");
   }

   SAFERELEASE(pReader);
   SAFERELEASE(pStream);
   CloseHandle(fileHandle);

   return topNode;
}

Example #2

File: XMLParser.cpp Project: kumaraguru-pk/CustomWebDataRetriever

/*
Modify this to avoid temp file I/O
*/
bool CXMLParser::extractData( wstring filename)
{
    bool bRet = false;
    HRESULT hr = S_OK;
    IXmlReader *pReader = nullptr;
    IStream *pStream = nullptr;
    XmlNodeType nodeType;
    const TCHAR* pwszName;
    const TCHAR* pwszValue;

    if (FAILED(hr = SHCreateStreamOnFile(filename.c_str(), STGM_READ, &pStream)))
    {
        return bRet;
    }
    if (!GetDataContainer())
    {
        if (FAILED(hr = CreateXmlReader(__uuidof(IXmlReader), (void**)&pReader, nullptr)))
        {
            return bRet;
        }
        if (FAILED(hr = pReader->SetInput(pStream)))
        {
            return bRet;
        }
        bool inKey = false;
        wstring csKeyFoundStr;
        while (!pReader->IsEOF())
        {
            pReader->Read(&nodeType);
            switch (nodeType)
            {
            case XmlNodeType_Element:
                if (S_OK == pReader->GetLocalName(&pwszName, nullptr))
                {
                    if (true == isNodeInKeys(pwszName))
                    {
                        inKey = true;
                        csKeyFoundStr = pwszName;
                    }
                }
                break;
            case XmlNodeType_CDATA:
            case XmlNodeType_Text:
            {
                if (true == inKey)
                {
                    if (S_OK == pReader->GetValue(&pwszValue, nullptr))
                    {
                        GetDataContainer()->setkeyValue(csKeyFoundStr, pwszValue);
                        inKey = false;
                        bRet = true;
                    }
                }
            }
            break;
            default:
                break;
            }
        }
    }
    return bRet;
}