IGXMLScanner.cpp

    {
        // This is a 'first fatal error' type exit, so fall through
    }
    catch(const XMLException& excToCatch)
    {
        //  Emit the error and catch any user exception thrown from here. Make
        //  sure in all cases we flush the reader manager.
        fInException = true;
        try
        {
            if (excToCatch.getErrorType() == XMLErrorReporter::ErrType_Warning)
                emitError
                (
                    XMLErrs::XMLException_Warning
                    , excToCatch.getCode()
                    , excToCatch.getMessage()
                );
            else if (excToCatch.getErrorType() >= XMLErrorReporter::ErrType_Fatal)
                emitError
                (
                    XMLErrs::XMLException_Fatal
                    , excToCatch.getCode()
                    , excToCatch.getMessage()
                );
            else
                emitError
                (
                    XMLErrs::XMLException_Error
                    , excToCatch.getCode()
                    , excToCatch.getMessage()
                );
        }
        catch(const OutOfMemoryException&)
        {
            // This is a special case for out-of-memory
            // conditions, because resetting the ReaderMgr
            // can be problematic.
            resetReaderMgr.release();

            throw;
        }
    }
    catch(const OutOfMemoryException&)
    {
        // This is a special case for out-of-memory
        // conditions, because resetting the ReaderMgr
        // can be problematic.
        resetReaderMgr.release();

        throw;
    }

    return loadedGrammar;
}

Grammar* IGXMLScanner::loadDTDGrammar(const InputSource& src,
                                      const bool toCache)
{
    // Reset the validators
    fDTDValidator->reset();
    if (fValidatorFromUser)
        fValidator->reset();

    if (!fValidator->handlesDTD()) {
        if (fValidatorFromUser && fValidate)
            ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::Gen_NoDTDValidator, fMemoryManager);
        else {
            fValidator = fDTDValidator;
        }
    }

    fDTDGrammar = (DTDGrammar*) fGrammarResolver->getGrammar(XMLUni::fgDTDEntityString);

    if (fDTDGrammar) {
        fDTDGrammar->reset();
    }
    else {
        fDTDGrammar = new (fGrammarPoolMemoryManager) DTDGrammar(fGrammarPoolMemoryManager);
        fGrammarResolver->putGrammar(fDTDGrammar);
    }

    fGrammar = fDTDGrammar;
    fGrammarType = fGrammar->getGrammarType();
    fValidator->setGrammar(fGrammar);

    //  And for all installed handlers, send reset events. This gives them
    //  a chance to flush any cached data.
    if (fDocHandler)
        fDocHandler->resetDocument();
    if (fEntityHandler)
        fEntityHandler->resetEntities();
    if (fErrorReporter)
        fErrorReporter->resetErrors();

    // Clear out the id reference list
    resetValidationContext();
    // and clear out the darned undeclared DTD element pool...
    fDTDElemNonDeclPool->removeAll();

    if (toCache) {

        unsigned int sysId = fGrammarResolver->getStringPool()->addOrFind(src.getSystemId());
        const XMLCh* sysIdStr = fGrammarResolver->getStringPool()->getValueForId(sysId);
              
        fGrammarResolver->orphanGrammar(XMLUni::fgDTDEntityString);
        ((XMLDTDDescription*) (fGrammar->getGrammarDescription()))->setSystemId(sysIdStr);
        fGrammarResolver->putGrammar(fGrammar);
    }

    //  Handle the creation of the XML reader object for this input source.
    //  This will provide us with transcoding and basic lexing services.
    XMLReader* newReader = fReaderMgr.createReader
    (
        src
        , false
        , XMLReader::RefFrom_NonLiteral
        , XMLReader::Type_General
        , XMLReader::Source_External
        , fCalculateSrcOfs
    );
    if (!newReader) {
        if (src.getIssueFatalErrorIfNotFound())
            ThrowXMLwithMemMgr1(RuntimeException, XMLExcepts::Scan_CouldNotOpenSource, src.getSystemId(), fMemoryManager);
        else
            ThrowXMLwithMemMgr1(RuntimeException, XMLExcepts::Scan_CouldNotOpenSource_Warning, src.getSystemId(), fMemoryManager);
    }

    //  In order to make the processing work consistently, we have to
    //  make this look like an external entity. So create an entity
    //  decl and fill it in and push it with the reader, as happens
    //  with an external entity. Put a janitor on it to insure it gets
    //  cleaned up. The reader manager does not adopt them.
    const XMLCh gDTDStr[] = { chLatin_D, chLatin_T, chLatin_D , chNull };
    DTDEntityDecl* declDTD = new (fMemoryManager) DTDEntityDecl(gDTDStr, false, fMemoryManager);
    declDTD->setSystemId(src.getSystemId());
    declDTD->setIsExternal(true);
    Janitor<DTDEntityDecl> janDecl(declDTD);

    // Mark this one as a throw at end
    newReader->setThrowAtEnd(true);

    // And push it onto the stack, with its pseudo name
    fReaderMgr.pushReader(newReader, declDTD);

    //  If we have a doc type handler and advanced callbacks are enabled,
    //  call the doctype event.
    if (fDocTypeHandler) {

        // Create a dummy root
        DTDElementDecl* rootDecl = new (fGrammarPoolMemoryManager) DTDElementDecl
        (
            gDTDStr
            , fEmptyNamespaceId
            , DTDElementDecl::Any
            , fGrammarPoolMemoryManager
        );
        rootDecl->setCreateReason(DTDElementDecl::AsRootElem);
        rootDecl->setExternalElemDeclaration(true);
        Janitor<DTDElementDecl> janSrc(rootDecl);

        fDocTypeHandler->doctypeDecl(*rootDecl, src.getPublicId(), src.getSystemId(), false, true);
    }

    // Create DTDScanner
    DTDScanner dtdScanner
    (
        (DTDGrammar*) fGrammar
        , fDocTypeHandler
        , fGrammarPoolMemoryManager
        , fMemoryManager
    );
    dtdScanner.setScannerInfo(this, &fReaderMgr, &fBufMgr);

    // Tell it its not in an include section
    dtdScanner.scanExtSubsetDecl(false, true);

    if (fValidate) {
        //  validate the DTD scan so far
        fValidator->preContentValidation(false, true);
    }

    if (toCache)
        fGrammarResolver->cacheGrammars();

    return fDTDGrammar;
}

// ---------------------------------------------------------------------------
//  IGXMLScanner: Helper methods
// ---------------------------------------------------------------------------
void IGXMLScanner::processSchemaLocation(XMLCh* const schemaLoc)
{
    XMLCh* locStr = schemaLoc;
    XMLReader* curReader = fReaderMgr.getCurrentReader();

    fLocationPairs->removeAllElements();
    while (*locStr)
    {
        do {
            // Do we have an escaped character ?
            if (*locStr == 0xFFFF)
                continue;

            if (!curReader->isWhitespace(*locStr))
               break;

            *locStr = chNull;
        } while (*++locStr);

        if (*locStr) {
            
            fLocationPairs->addElement(locStr);

            while (*++locStr) {
                // Do we have an escaped character ?
                if (*locStr == 0xFFFF)
                    continue;
                if (curReader->isWhitespace(*locStr))
                    break;
            }
        }
    }
}

void IGXMLScanner::endElementPSVI(SchemaElementDecl* const elemDecl,
                                  DatatypeValidator* const memberDV)
{
    PSVIElement::ASSESSMENT_TYPE validationAttempted;
    PSVIElement::VALIDITY_STATE validity = PSVIElement::VALIDITY_NOTKNOWN;

    if (fPSVIElemContext.fElemDepth > fPSVIElemContext.fFullValidationDepth)
        validationAttempted = PSVIElement::VALIDATION_FULL;
    else if (fPSVIElemContext.fElemDepth > fPSVIElemContext.fNoneValidationDepth)
        validationAttempted = PSVIElement::VALIDATION_NONE;
    else
    {
        validationAttempted  = PSVIElement::VALIDATION_PARTIAL;
		fPSVIElemContext.fFullValidationDepth =
            fPSVIElemContext.fNoneValidationDepth = fPSVIElemContext.fElemDepth - 1;
    }

    if (fValidate && elemDecl->isDeclared())
    {
        validity = (fPSVIElemContext.fErrorOccurred)
            ? PSVIElement::VALIDITY_INVALID : PSVIElement::VALIDITY_VALID;
    }

    XSTypeDefinition* typeDef = 0;
    bool isMixed = false;
    if (fPSVIElemContext.fCurrentTypeInfo)
    {
        typeDef = (XSTypeDefinition*) fModel->getXSObject(fPSVIElemContext.fCurrentTypeInfo);
        SchemaElementDecl::ModelTypes modelType = (SchemaElementDecl::ModelTypes)fPSVIElemContext.fCurrentTypeInfo->getContentType();
        isMixed = (modelType == SchemaElementDecl::Mixed_Simple
                || modelType == SchemaElementDecl::Mixed_Complex);
    }
    else if (fPSVIElemContext.fCurrentDV)
        typeDef = (XSTypeDefinition*) fModel->getXSObject(fPSVIElemContext.fCurrentDV);

    XMLCh* canonicalValue = 0;
    if (fPSVIElemContext.fNormalizedValue && !isMixed && 
            validity == PSVIElement::VALIDITY_VALID)
    {
        if (memberDV)
            canonicalValue = (XMLCh*) memberDV->getCanonicalRepresentation(fPSVIElemContext.fNormalizedValue, fMemoryManager);
        else if (fPSVIElemContext.fCurrentDV)
            canonicalValue = (XMLCh*) fPSVIElemContext.fCurrentDV->getCanonicalRepresentation(fPSVIElemContext.fNormalizedValue, fMemoryManager);
    }

    fPSVIElement->reset
    (
        validity
        , validationAttempted
        , fRootElemName
        , fPSVIElemContext.fIsSpecified
        , (elemDecl->isDeclared()) 
            ? (XSElementDeclaration*) fModel->getXSObject(elemDecl) : 0
        , typeDef
        , (memberDV) ? (XSSimpleTypeDefinition*) fModel->getXSObject(memberDV) : 0
        , fModel
        , elemDecl->getDefaultValue()
        , fPSVIElemContext.fNormalizedValue
        , canonicalValue
    );

    fPSVIHandler->handleElementPSVI
    (
        elemDecl->getBaseName()
        , fURIStringPool->getValueForId(elemDecl->getURI())
        , fPSVIElement
    );

    // decrease element depth
    fPSVIElemContext.fElemDepth--;

}

void IGXMLScanner::resetPSVIElemContext()
{
    fPSVIElemContext.fIsSpecified = false;
    fPSVIElemContext.fErrorOccurred = false;
    fPSVIElemContext.fElemDepth = -1;
    fPSVIElemContext.fFullValidationDepth = -1;
    fPSVIElemContext.fNoneValidationDepth = -1;
    fPSVIElemContext.fCurrentDV = 0;
    fPSVIElemContext.fCurrentTypeInfo = 0;
    fPSVIElemContext.fNormalizedValue = 0;
}

XERCES_CPP_NAMESPACE_END