XMLScanner.cpp

                 else if (fReaderMgr.skippedString(XMLUni::fgCommentString))
                {
                    scanComment();
                }
                 else
                {
                    // This can't be possible, so just give up
                    emitError(XMLErrs::ExpectedCommentOrPI);
                    fReaderMgr.skipPastChar(chCloseAngle);
                }
            }
             else if (XMLReader::isWhitespace(nextCh))
            {
                //
                //  If we have a doc handler, then gather up the spaces and
                //  call back. Otherwise, just skip over whitespace.
                //
                if (fDocHandler)
                {
                    fReaderMgr.getSpaces(bbCData.getBuffer());
                    fDocHandler->ignorableWhitespace
                    (
                        bbCData.getRawBuffer()
                        , bbCData.getLen()
                        , false
                    );
                }
                 else
                {
                    fReaderMgr.skipPastSpaces();
                }
            }
             else
            {
                emitError(XMLErrs::ExpectedCommentOrPI);
                fReaderMgr.skipPastChar(chCloseAngle);
            }
        }

        catch(const EndOfEntityException&)
        {
            //
            //  Some entity leaked out of the content part of the document. Issue
            //  a warning and keep going.
            //
            emitError(XMLErrs::EntityPropogated);
        }
    }
}


//
//  Scans a PI and calls the appropriate callbacks. At entry we have just
//  scanned the <? part, and need to now start on the PI target name.
//
void XMLScanner::scanPI()
{
    const XMLCh* namePtr = 0;
    const XMLCh* targetPtr = 0;

    //
    //  If there are any spaces here, then warn about it. If we aren't in
    //  'first error' mode, then we'll come back and can easily pick up
    //  again by just skipping them.
    //
    if (fReaderMgr.lookingAtSpace())
    {
        emitError(XMLErrs::PINameExpected);
        fReaderMgr.skipPastSpaces();
    }

    // Get a buffer for the PI name and scan it in
    XMLBufBid bbName(&fBufMgr);
    if (!fReaderMgr.getName(bbName.getBuffer()))
    {
        emitError(XMLErrs::PINameExpected);
        fReaderMgr.skipPastChar(chCloseAngle);
        return;
    }

    // Point the name pointer at the raw data
    namePtr = bbName.getRawBuffer();

    // See if it is some form of 'xml' and emit a warning
    if (!XMLString::compareIString(namePtr, XMLUni::fgXMLString))
        emitError(XMLErrs::NoPIStartsWithXML);

    // If namespaces are enabled, then no colons allowed
    if (fDoNamespaces)
    {
        if (XMLString::indexOf(namePtr, chColon) != -1)
            emitError(XMLErrs::ColonNotLegalWithNS);
    }

    //
    //  If we don't hit a space next, then the PI has no target. If we do
    //  then get out the target. Get a buffer for it as well
    //
    XMLBufBid bbTarget(&fBufMgr);
    if (fReaderMgr.skippedSpace())
    {
        // Skip any leading spaces
        fReaderMgr.skipPastSpaces();

        bool gotLeadingSurrogate = false;

        // It does have a target, so lets move on to deal with that.
        while (1)
        {
            const XMLCh nextCh = fReaderMgr.getNextChar();

            // Watch for an end of file, which is always bad here
            if (!nextCh)
            {
                emitError(XMLErrs::UnterminatedPI);
                ThrowXML(UnexpectedEOFException, XMLExcepts::Gen_UnexpectedEOF);
            }

            // Watch for potential terminating character
            if (nextCh == chQuestion)
            {
                // It must be followed by '>' to be a termination of the target
                if (fReaderMgr.skippedChar(chCloseAngle))
                    break;
            }

            // Check for correct surrogate pairs
            if ((nextCh >= 0xD800) && (nextCh <= 0xDBFF))
            {
                if (gotLeadingSurrogate)
                    emitError(XMLErrs::Expected2ndSurrogateChar);
                else
                    gotLeadingSurrogate = true;
            }
             else
            {
                if (gotLeadingSurrogate)
                {
                    if ((nextCh < 0xDC00) || (nextCh > 0xDFFF))
                        emitError(XMLErrs::Expected2ndSurrogateChar);
                }
                // Its got to at least be a valid XML character
                else if (!XMLReader::isXMLChar(nextCh)) {

                    XMLCh tmpBuf[9];
                    XMLString::binToText
                    (
                        nextCh
                        , tmpBuf
                        , 8
                        , 16
                    );
                    emitError(XMLErrs::InvalidCharacter, tmpBuf);
                }

                gotLeadingSurrogate = false;
            }

            bbTarget.append(nextCh);
        }
    }
     else
    {
        // No target, but make sure its terminated ok
        if (!fReaderMgr.skippedChar(chQuestion))
        {
            emitError(XMLErrs::UnterminatedPI);
            fReaderMgr.skipPastChar(chCloseAngle);
            return;
        }

        if (!fReaderMgr.skippedChar(chCloseAngle))
        {
            emitError(XMLErrs::UnterminatedPI);
            fReaderMgr.skipPastChar(chCloseAngle);
            return;
        }
    }

    // Point the target pointer at the raw data
    targetPtr = bbTarget.getRawBuffer();

    // If we have a handler, then call it
    if (fDocHandler)
    {
        fDocHandler->docPI
        (
            namePtr
            , targetPtr
       );
    }
}

//
//  Scans all the input from the start of the file to the root element.
//  There does not have to be anything in the prolog necessarily, but usually
//  there is at least an XMLDecl.
//
//  On exit from here we are either at the end of the file or about to read
//  the opening < of the root element.
//
void XMLScanner::scanProlog()
{
    // Get a buffer for whitespace processing
    XMLBufBid bbCData(&fBufMgr);

    //
    //  Loop through the prolog. If there is no content, this could go all
    //  the way to the end of the file.
    //
    //  Note that we use a double loop here to avoid the overhead of the
    //  setup/teardown of the exception handler on each loop.
    //
    while (true)
    {
    try
    {
        while (true)
        {
            const XMLCh nextCh = fReaderMgr.peekNextChar();

            if (nextCh == chOpenAngle)
            {
                //
                //  Ok, it could be the xml decl, a comment, the doc type line,
                //  or the start of the root element.
                //
                if (checkXMLDecl(true))
                {
                    // There shall be at lease --ONE-- space in between
                    // the tag '<?xml' and the VersionInfo.
                    //
                    //
                    //  If we are not at line 1, col 6, then the decl was not
                    //  the first text, so its invalid.
                    //
                    const XMLReader* curReader = fReaderMgr.getCurrentReader();
                    if ((curReader->getLineNumber() != 1)
                    ||  (curReader->getColumnNumber() != 7))
                    {
                        emitError(XMLErrs::XMLDeclMustBeFirst);
                    }

                    scanXMLDecl(Decl_XML);
                }
                 else if (fReaderMgr.skippedString(XMLUni::fgPIString))
                {
                    scanPI();
                }
                 else if (fReaderMgr.skippedString(XMLUni::fgCommentString))
                {
                    scanComment();
                }
                 else if (fReaderMgr.skippedString(XMLUni::fgDocTypeString))
                {
                    scanDocTypeDecl();

                    // if reusing grammar, this has been validated already in first scan
                    // skip for performance
                    if (fValidate && !fGrammar->getValidated()) {
                        //  validate the DTD scan so far
                        fValidator->preContentValidation(fUseCachedGrammar, true);
                    }
                }
                 else
                {
                    // Assume its the start of the root element
                    return;
                }
            }
             else if (XMLReader::isWhitespace(nextCh))
            {
                //
                //  If we have a document handler then gather up the
                //  whitespace and call back. Otherwise just skip over spaces.
                //
                if (fDocHandler)
                {
                    fReaderMgr.getSpaces(bbCData.getBuffer());
                    fDocHandler->ignorableWhitespace
                    (
                        bbCData.getRawBuffer()
                        , bbCData.getLen()
                        , false
                    );
                }
                 else
                {
                    fReaderMgr.skipPastSpaces();
                }
            }
             else
            {
                emitError(XMLErrs::InvalidDocumentStructure);
                fReaderMgr.skipPastChar(chCloseAngle);
            }

        }
    }

    catch(const EndOfEntityException&)
    {
        //
        //  We should never get an end of entity here. They should only
        //  occur within the doc type scanning method, and not leak out to
        //  here.
        //
        emitError
        (
            XMLErrs::UnexpectedEOE
            , "in prolog"
        );
    }
    }
}

//
//  This method handles the high level logic of scanning the DOCType
//  declaration. This calls the DTDScanner and kicks off both the scanning of
//  the internal subset and the scanning of the external subset, if any.
//
//  When we get here the '<!DOCTYPE' part has already been scanned, which is
//  what told us that we had a doc type decl to parse.
//

void XMLScanner::scanDocTypeDecl()
{
    //
    //  We have a doc type. So, switch the Grammar.
    //
    switchGrammar(XMLUni::fgDTDEntityString);

    if (fDocTypeHandler)
        fDocTypeHandler->resetDocType();

    // There must be some space after DOCTYPE
    if (!fReaderMgr.skipPastSpaces())
    {
        emitError(XMLErrs::ExpectedWhitespace);

        // Just skip the Doctype declaration and return
        fReaderMgr.skipPastChar(chCloseAngle);
        return;
    }

    // Get a buffer for the root element
    XMLBufBid bbRootName(&fBufMgr);

    //
    //  Get a name from the input, which should be the name of the root
    //  element of the upcoming content.
    //
    fReaderMgr.getName(bbRootName.getBuffer());
    if (bbRootName.isEmpty())
    {
        emitError(XMLErrs::NoRootElemInDOCTYPE);
        fReaderMgr.skipPastChar(chCloseAngle);
        return;
    }

    //
    //  Store the root element name for later check
    //
    setRootElemName(bbRootName.getRawBuffer());

    //
    //  This element obviously is not going to exist in the element decl
    //  pool yet, but we need to call docTypeDecl. So force it into
    //  the element decl pool, marked as being there because it was in
    //  the DOCTYPE. Later, when its declared, the status will be updated.
    //
    //  Only do this if we are not reusing the validator! If we are reusing,
    //  then look it up instead. It has to exist!
    //
    DTDElementDecl* rootDecl = new DTDElementDecl(bbRootName.getRawBuffer(), fEmptyNamespaceId);

    rootDecl->setCreateReason(DTDElementDecl::AsRootElem);
    rootDecl->setExternalElemDeclaration(true);
    ((DTDGrammar*)fGrammar)->setRootElemId(fGrammar->putElemDecl(rootDecl));

    // Skip any spaces after the name
    fReaderMgr.skipPastSpaces();

    //
    //  And now if we are looking at a >, then we are done. It is not
    //  required to have an internal or external subset, though why you
    //  would not escapes me.
    //
    if (fReaderMgr.skippedChar(chCloseAngle)) {
        //
        //  If we have a doc type handler and advanced callbacks are enabled,
        //  call the doctype event.
        //
        if (fDocTypeHandler)
            fDocTypeHandler->doctypeDecl(*rootDecl, 0, 0, false);
        return;
    }

    // either internal/external subset
    if (fValScheme == Val_Auto && !fValidate)
        fValidate = true;

    bool    hasIntSubset = false;
    bool    hasExtSubset = false;
    XMLCh*  sysId = 0;
    XMLCh*  pubId = 0;

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

    //
    //  If the next character is '[' then we have no external subset cause
    //  there is no system id, just the opening character of the internal
    //  subset. Else, has to be an id.
    //
    // Just look at the next char, don't eat it.
    if (fReaderMgr.peekNextChar() == chOpenSquare)
    {
        hasIntSubset = true;
    }
     else
    {
        // Indicate we have an external subset
        hasExtSubset = true;
        fHasNoDTD = false;

        // Get buffers for the ids
        XMLBufBid bbPubId(&fBufMgr);
        XMLBufBid bbSysId(&fBufMgr);

        // Get the external subset id
        if (!dtdScanner.scanId(bbPubId.getBuffer(), bbSysId.getBuffer(), DTDScanner::IDType_External))
        {
            fReaderMgr.skipPastChar(chCloseAngle);
            return;
        }

        // Get copies of the ids we got
        pubId = XMLString::replicate(bbPubId.getRawBuffer());
        sysId = XMLString::replicate(bbSysId.getRawBuffer());

        // Skip spaces and check again for the opening of an internal subset
        fReaderMgr.skipPastSpaces();

        // Just look at the next char, don't eat it.
        if (fReaderMgr.peekNextChar() == chOpenSquare) {
            hasIntSubset = true;
        }
    }

    // Insure that the ids get cleaned up, if they got allocated
    ArrayJanitor<XMLCh> janSysId(sysId);
    ArrayJanitor<XMLCh> janPubId(pubId);

    //
    //  If we have a doc type handler and advanced callbacks are enabled,
    //  call the doctype event.
    //
    if (fDocTypeHandler)
        fDocTypeHandler->doctypeDecl(*rootDecl, pubId, sysId, hasIntSubset);

    //
    //  Ok, if we had an internal subset, we are just past the [ character
    //  and need to parse that first.
    //
    if (hasIntSubset)
    {
        // Eat the opening square bracket
        fReaderMgr.getNextChar();

        // We can't have any internal subset if we are reusing the validator
        if (fUseCachedGrammar || fToCacheGrammar)
            ThrowXML(RuntimeException, XMLExcepts::Val_CantHaveIntSS);

        //
        //  And try to scan the internal subset. If we fail, try to recover
        //  by skipping forward tot he close angle and returning.
        //
        if (!dtdScanner.scanInternalSubset())
        {
            fReaderMgr.skipPastChar(chCloseAngle);
            return;
        }

        //
        //  Do a sanity check that some expanded PE did not propogate out of
        //  the doctype. This could happen if it was terminated early by bad
        //  syntax.
        //
        if (fReaderMgr.getReaderDepth() > 1)
        {
            emitError(XMLErrs::PEPropogated);

            // Ask the reader manager to pop back down to the main level
            fReaderMgr.cleanStackBackTo(1);
        }

        fReaderMgr.skipPastSpaces();
    }

    // And that should leave us at the closing > of the DOCTYPE line
    if (!fReaderMgr.skippedChar(chCloseAngle))
    {
        //
        //  Do a special check for the common scenario of an extra ] char at
        //  the end. This is easy to recover from.
        //
        if (fReaderMgr.skippedChar(chCloseSquare)
        &&  fReaderMgr.skippedChar(chCloseAngle))
        {
            emitError(XMLErrs::ExtraCloseSquare);
        }
         else
        {
            emitError(XMLErrs::UnterminatedDOCTYPE);
            fReaderMgr.skipPastChar(chCloseAngle);
        }
    }

    //
    //  If we had an external subset, then we need to deal with that one
    //  next. If we are reusing the validator, then don't scan it.
    //
    if (hasExtSubset) {

        if (fUseCachedGrammar)
        {
            InputSource* sysIdSrc = resolveSystemId(sysId);
            Janitor<InputSource> janSysIdSrc(sysIdSrc);
            Grammar* grammar = fGrammarResolver->getGrammar(sysIdSrc->getSystemId());

            if (grammar && grammar->getGrammarType() == Grammar::DTDGrammarType) {

                fDTDGrammar = (DTDGrammar*) grammar;
                fGrammar = fDTDGrammar;
                fValidator->setGrammar(fGrammar);
                rootDecl = (DTDElementDecl*) fGrammar->getElemDecl(fEmptyNamespaceId, 0, bbRootName.getRawBuffer(), Grammar::TOP_LEVEL_SCOPE);

                if (rootDecl)
                    ((DTDGrammar*)fGrammar)->setRootElemId(rootDecl->getId());
                else {
                    rootDecl = new DTDElementDecl(bbRootName.getRawBuffer(), fEmptyNamespaceId);
                    rootDecl->setCreateReason(DTDElementDecl::AsRootElem);
                    rootDecl->setExternalElemDeclaration(true);
                    ((DTDGrammar*)fGrammar)->setRootElemId(fGrammar->putElemDecl(rootDecl));
                }

                return;
            }
        }

        if (fLoadExternalDTD || fValidate)
        {
            // And now create a reader to read this entity
            InputSource* srcUsed;
            XMLReader* reader = fReaderMgr.createReader
            (
                sysId
                , pubId
                , false
                , XMLReader::RefFrom_NonLiteral
                , XMLReader::Type_General
                , XMLReader::Source_External
                , srcUsed
            );

            // Put a janitor on the input source
            Janitor<InputSource> janSrc(srcUsed);

            //
            //  If it failed then throw an exception
            //
            if (!reader)
                ThrowXML1(RuntimeException, XMLExcepts::Gen_CouldNotOpenDTD, srcUsed->getSystemId());

            if (fToCacheGrammar) {

                unsigned int stringId = fGrammarResolver->getStringPool()->addOrFind(srcUsed->getSystemId());
                const XMLCh* sysIdStr = fGrammarResolver->getStringPool()->getValueForId(stringId);

                fGrammarResolver->orphanGrammar(XMLUni::fgDTDEntityString);
                fGrammarResolver->putGrammar(sysIdStr, fGrammar);
            }

            //
            //  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 DTDEntityDecl(gDTDStr);
            declDTD->setSystemId(sysId);
            Janitor<DTDEntityDecl> janDecl(declDTD);

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

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

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

bool XMLScanner::scanStartTag(bool& gotData)
{
    //
    //  Assume we will still have data until proven otherwise. It will only
    //  ever be false if this is the root and its empty.
    //
    gotData = true;

    //
    //  Get the QName. In this case, we are not doing namespaces, so we just
    //  use it as is and don't have to break it into parts.
    //
    if (!fReaderMgr.getName(fQNameBuf))
    {
        emitError(XMLErrs::ExpectedElementName);
        fReaderMgr.skipToChar(chOpenAngle);
        return false;
    }

    // Assume it won't be an empty tag
    bool isEmpty = false;

    //
    //  Lets try to look up the element in the validator's element decl pool
    //  We can pass bogus values for the URI id and the base name. We know that
    //  this can only be called if we are doing a DTD style validator and that
    //  he will only look at the QName.
    //
    //  We tell him to fault in a decl if he does not find one.
    //
    bool wasAdded = false;
    XMLElementDecl* elemDecl = fGrammar->findOrAddElemDecl
    (
        fEmptyNamespaceId
        , 0
        , 0
        , fQNameBuf.getRawBuffer()
        , Grammar::TOP_LEVEL_SCOPE
        , wasAdded
    );

    //
    //  We do something different here according to whether we found the
    //  element or not.
    //
    if (wasAdded)
    {
        // If validating then emit an error
        if (fValidate)
        {
            // This is to tell the reuse Validator that this element was
            // faulted-in, was not an element in the validator pool originally
            elemDecl->setCreateReason(XMLElementDecl::JustFaultIn);

            fValidator->emitError
            (
                XMLValid::ElementNotDefined
                , elemDecl->getFullName()
            );
        }
    }
     else
    {
        // If its not marked declared and validating, then emit an error
        if (fValidate && !elemDecl->isDeclared())
        {
            fValidator->emitError
            (
                XMLValid::ElementNotDefined
                , elemDecl->getFullName()
            );
        }
    }

    // See if its the root element
    const bool isRoot = fElemStack.isEmpty();

    // Expand the element stack and add the new element
    fElemStack.addLevel(elemDecl, fReaderMgr.getCurrentReaderNum());
    fElemStack.setValidationFlag(fValidate);

    //  Validate the element
    if (fValidate)
        fValidator->validateElement(elemDecl);

    //
    //  If this is the first element and we are validating, check the root
    //  element.
    //
    if (isRoot)
    {
        fRootGrammar = fGrammar;

        if (fValidate)
        {
            //  If a DocType exists, then check if it matches the root name there.
            if (fRootElemName && XMLString::compareString(fQNameBuf.getRawBuffer(), fRootElemName))
                fValidator->emitError(XMLValid::RootElemNotLikeDocType);

            //  Some validators may also want to check the root, call the
            //  XMLValidator::checkRootElement
            if (fValidatorFromUser && !fValidator->checkRootElement(elemDecl->getId()))
                fValidator->emitError(XMLValid::RootElemNotLikeDocType);
        }
    }
     else
    {
        //
        //  If the element stack is not empty, then add this element as a
        //  child of the previous top element. If its empty, this is the root
        //  elem and is not the child of anything.
        //
        fElemStack.addChild(elemDecl->getElementName(), true);
    }

    //
    //  Ask the element decl to clear out the 'provided' flag on all of its
    //  att defs.
    //
    elemDecl->resetDefs();

    // Skip any whitespace after the name
    fReaderMgr.skipPastSpaces();

    //
    //  We loop until we either see a /> or >, handling attribute/value
    //  pairs until we get there.
    //
    unsigned int    attCount = 0;
    unsigned int    curAttListSize = fAttrList->size();
    while (true)
    {
        // And get the next non-space character
        XMLCh nextCh = fReaderMgr.peekNextChar();

        //
        //  If the next character is not a slash or closed angle bracket,
        //  then it must be whitespace, since whitespace is required
        //  between the end of the last attribute and the name of the next
        //  one.
        //
        if (attCount)
        {
            if ((nextCh != chForwardSlash) && (nextCh != chCloseAngle))
            {
                if (XMLReader::isWhitespace(nextCh))
                {
                    // Ok, skip by them and peek another char
                    fReaderMgr.skipPastSpaces();
                    nextCh = fReaderMgr.peekNextChar();
                }
                 else
                {
                    // Emit the error but keep on going
                    emitError(XMLErrs::ExpectedWhitespace);
                }
            }
        }

        //
        //  Ok, here we first check for any of the special case characters.
        //  If its not one, then we do the normal case processing, which
        //  assumes that we've hit an attribute value, Otherwise, we do all
        //  the special case checks.
        //
        if (!XMLReader::isSpecialStartTagChar(nextCh))
        {
            //
            //  Assume its going to be an attribute, so get a name from
            //  the input.
            //
            if (!fReaderMgr.getName(fAttNameBuf))
            {
                emitError(XMLErrs::ExpectedAttrName);
                fReaderMgr.skipPastChar(chCloseAngle);
                return false;
            }

            // And next must be an equal sign
            if (!scanEq())
            {
                static const XMLCh tmpList[] =
                {
                    chSingleQuote, chDoubleQuote, chCloseAngle
                    , chOpenAngle, chForwardSlash, chNull
                };

                emitError(XMLErrs::ExpectedEqSign);

                //
                //  Try to sync back up by skipping forward until we either
                //  hit something meaningful.
                //
                const XMLCh chFound = fReaderMgr.skipUntilInOrWS(tmpList);

                if ((chFound == chCloseAngle) || (chFound == chForwardSlash))
                {
                    // Jump back to top for normal processing of these
                    continue;
                }
                 else if ((chFound == chSingleQuote)
                      ||  (chFound == chDoubleQuote)
                      ||  XMLReader::isWhitespace(chFound))
                {
                    // Just fall through assuming that the value is to follow
                }
                 else if (chFound == chOpenAngle)
                {
                    // Assume a malformed tag and that new one is starting
                    emitError(XMLErrs::UnterminatedStartTag, elemDecl->getFullName());
                    return false;
                }
                 else
                {
                    // Something went really wrong
                    return false;
                }
            }

            //
            //  See if this attribute is declared for this element. If we are
            //  not validating of course it will not be at first, but we will
            //  fault it into the pool (to avoid lots of redundant errors.)
            //
            wasAdded = false;
            XMLAttDef* attDef = elemDecl->findAttr
            (
                fAttNameBuf.getRawBuffer()
                , 0
                , 0
                , 0
                , XMLElementDecl::AddIfNotFound
                , wasAdded
            );

            if (wasAdded)
            {
                //
                //  If there is a validation handler, then we are validating
                //  so emit an error.
                //
                if (fValidate)
                {
                    // This is to tell the Validator that this attribute was
                    // faulted-in, was not an attribute in the attdef originally
                    attDef->setCreateReason(XMLAttDef::JustFaultIn);

                    fValidator->emitError
                    (
                        XMLValid::AttNotDefinedForElement
                        , fAttNameBuf.getRawBuffer()
                        , elemDecl->getFullName()
                    );
                }
            }
            else
            {
                // If this attribute was faulted-in and first occurence,
                // then emit an error
                if (fValidate && attDef->getCreateReason() == XMLAttDef::JustFaultIn
                    && !attDef->getProvided())
                {
                    fValidator->emitError
                    (
                        XMLValid::AttNotDefinedForElement
                        , fAttNameBuf.getRawBuffer()
                        , elemDecl->getFullName()
                    );
                }
            }

            //
            //  If its already provided, then there are more than one of
            //  this attribute in this start tag, so emit an error.
            //
            if (attDef->getProvided())
            {
                emitError
                (
                    XMLErrs::AttrAlreadyUsedInSTag
                    , attDef->getFullName()
                    , elemDecl->getFullName()
                );
            }
             else
            {
                // Mark this one as already seen
                attDef->setProvided(true);
            }

            //
            //  Skip any whitespace before the value and then scan the att
            //  value. This will come back normalized with entity refs and
            //  char refs expanded.
            //
            fReaderMgr.skipPastSpaces();
            if (!scanAttValue(attDef, fAttValueBuf))
            {
                static const XMLCh tmpList[] =
                {
                    chCloseAngle, chOpenAngle, chForwardSlash, chNull
                };

                emitError(XMLErrs::ExpectedAttrValue);

                //
                //  It failed, so lets try to get synced back up. We skip
                //  forward until we find some whitespace or one of the
                //  chars in our list.
                //
                const XMLCh chFound = fReaderMgr.skipUntilInOrWS(tmpList);

                if ((chFound == chCloseAngle)
                ||  (chFound == chForwardSlash)
                ||  XMLReader::isWhitespace(chFound))
                {
                    //
                    //  Just fall through and process this attribute, though
                    //  the value will be "".
                    //
                }
                 else if (chFound == chOpenAngle)
                {
                    // Assume a malformed tag and that new one is starting
                    emitError(XMLErrs::UnterminatedStartTag, elemDecl->getFullName());
                    return false;
                }
                 else
                {
                    // Something went really wrong
                    return false;
                }
            }

            //
            //  Now that its all stretched out, lets look at its type and
            //  determine if it has a valid value. It will output any needed
            //  errors, but we just keep going. We only need to do this if
            //  we are validating.
            //
            if (!wasAdded && attDef->getCreateReason() != XMLAttDef::JustFaultIn)
            {
                // Let the validator pass judgement on the attribute value
                if (fValidate)
                {
                    fValidator->validateAttrValue
                    (
                        attDef
                        , fAttValueBuf.getRawBuffer()
                    );
                }
            }

            //
            //  Add this attribute to the attribute list that we use to
            //  pass them to the handler. We reuse its existing elements
            //  but expand it as required.
            //
            XMLAttr* curAtt;
            if (attCount >= curAttListSize)
            {
                curAtt = new XMLAttr
                (
                    -1
                    , fAttNameBuf.getRawBuffer()
                    , XMLUni::fgZeroLenString
                    , fAttValueBuf.getRawBuffer()
                    , attDef->getType()
                    , true
                );
                fAttrList->addElement(curAtt);
            }
             else
            {
                curAtt = fAttrList->elementAt(attCount);
                curAtt->set
                (
                    -1
                    , fAttNameBuf.getRawBuffer()
                    , XMLUni::fgZeroLenString
                    , fAttValueBuf.getRawBuffer()
                    , attDef->getType()
                );
                curAtt->setSpecified(true);
            }
            attCount++;

            // And jump back to the top of the loop
            continue;
        }

        //