Re: Headers when writing output file in xerces-3.0

[Alberto Massari]

Hi Alain,
the XML header is written when you write the entire document, not when 
you write the DTD and the root element separately. You should use

 theSerializer->write(doc, theOutput);

Alberto



Alain Leblanc wrote:
Here's a sample program. It's short enough that I can put it here. I'm
not sure the attachment would make it through:

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#include <iostream>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/framework/LocalFileFormatTarget.hpp>

XERCES_CPP_NAMESPACE_USE
using namespace std;

// StrXML class copied from Xerces-2.8 distro.

class StrXML
{
public :
    // -----------------------------------------------------------------------
    //  Constructors and Destructor
    // -----------------------------------------------------------------------
    StrXML(const char* const toTranscode)
    {
        // Call the private transcoding method
        fLocalForm = XMLString::transcode(toTranscode);
    }

    ~StrXML()
    {
        XMLString::release(&fLocalForm);
    }


    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------
    const XMLCh* utf16() const
    {
        return fLocalForm;
    }
private :
    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fLocalForm
    //      This is the local code page form of the string.
    // -----------------------------------------------------------------------
    XMLCh*   fLocalForm;

};


int main (int , char **) {
  XMLPlatformUtils::Initialize();
  DOMImplementation *impl =
DOMImplementationRegistry::getDOMImplementation(StrXML("").utf16());
  if (impl == NULL)
    throw string("Implementation is NULL in create document.");

  // Create the document with one tag
  DOMDocument *doc = impl->createDocument(0, StrXML("session").utf16(),
                                          
impl->createDocumentType(StrXML("dummy").utf16(),
                                                                   0,
                                                                   0));

  DOMLSSerializer *theSerializer =
((DOMImplementationLS*)impl)->createLSSerializer();
  DOMLSOutput *theOutput = ((DOMImplementationLS*)impl)->createLSOutput();

  DOMConfiguration *configuration = theSerializer->getDomConfig();

  // Have a nice output
  if (configuration->canSetParameter(XMLUni::fgDOMWRTFormatPrettyPrint, true))
    configuration->setParameter(XMLUni::fgDOMWRTFormatPrettyPrint, true);

  // Add the declaration?
  if (configuration->canSetParameter(XMLUni::fgDOMXMLDeclaration, true))
    configuration->setParameter(XMLUni::fgDOMXMLDeclaration, true);



  LocalFileFormatTarget *myFormTarget =
    new LocalFileFormatTarget(StrXML("outfile.xml").utf16());
  theOutput->setByteStream(myFormTarget);
  if (doc->getDoctype() == NULL) {
    cerr << "The doc type is null.\n";
    exit(-1);
  }
  theSerializer->write(doc->getDoctype(), theOutput);
  theSerializer->write(doc->getDocumentElement(), theOutput);
  theOutput->release();
  theSerializer->release();
  XMLPlatformUtils::Terminate();

}


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