xmldocumentfragmentscannerimpl.java

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    public boolean scanDocument(boolean complete) 
        throws IOException, XNIException {
        
        // reset entity scanner
        fEntityScanner = fEntityManager.getEntityScanner();
        
        // keep dispatching "events"
        fEntityManager.setEntityHandler(this);
        do {
            if (!fDispatcher.dispatch(complete)) {
                return false;
            }
        } while (complete);

        // return success
        return true;

    } // scanDocument(boolean):boolean

    //
    // XMLComponent methods
    //

    /**
     * Resets the component. The component can query the component manager
     * about any features and properties that affect the operation of the
     * component.
     * 
     * @param componentManager The component manager.
     *
     * @throws SAXException Thrown by component on initialization error.
     *                      For example, if a feature or property is
     *                      required for the operation of the component, the
     *                      component manager may throw a 
     *                      SAXNotRecognizedException or a
     *                      SAXNotSupportedException.
     */
    public void reset(XMLComponentManager componentManager)
        throws XMLConfigurationException {

        super.reset(componentManager);

        // other settings
        //fDocumentSystemId = null;

        // sax features
        fAttributes.setNamespaces(fNamespaces);

        // initialize vars
        fMarkupDepth = 0;
        fCurrentElement = null;
        fElementStack.clear();
        fHasExternalDTD = false;
        fStandalone = false;
        fInScanContent = false;

		// setup dispatcher
        try {
            fSecurityManager = (SecurityManager)componentManager.getProperty(Constants.SECURITY_MANAGER);
        } catch (XMLConfigurationException e) {
            fSecurityManager = null;
        }
        
		fElementAttributeLimit = (fSecurityManager != null)?fSecurityManager.getElementAttrLimit():0;
		setScannerState(SCANNER_STATE_CONTENT);
		setDispatcher(fContentDispatcher);

        if (fParserSettings) {
            // parser settings have changed. reset them.
        	
            // xerces features
            try {
                fNotifyBuiltInRefs = componentManager.getFeature(NOTIFY_BUILTIN_REFS);
            } catch (XMLConfigurationException e) {
                fNotifyBuiltInRefs = false;
            }
            
            // xerces properties
            try {
                Object resolver = componentManager.getProperty(ENTITY_RESOLVER);
                fExternalSubsetResolver = (resolver instanceof ExternalSubsetResolver) ?
                    (ExternalSubsetResolver) resolver : null;
            }
            catch (XMLConfigurationException e) {
                fExternalSubsetResolver = null;
            }
        }

    } // reset(XMLComponentManager)

    /**
     * Returns a list of feature identifiers that are recognized by
     * this component. This method may return null if no features
     * are recognized by this component.
     */
    public String[] getRecognizedFeatures() {
        return (String[])(RECOGNIZED_FEATURES.clone());
    } // getRecognizedFeatures():String[]

    /**
     * Sets the state of a feature. This method is called by the component
     * manager any time after reset when a feature changes state. 
     * <p>
     * <strong>Note:</strong> Components should silently ignore features
     * that do not affect the operation of the component.
     * 
     * @param featureId The feature identifier.
     * @param state     The state of the feature.
     *
     * @throws SAXNotRecognizedException The component should not throw
     *                                   this exception.
     * @throws SAXNotSupportedException The component should not throw
     *                                  this exception.
     */
    public void setFeature(String featureId, boolean state)
        throws XMLConfigurationException {

        super.setFeature(featureId, state);
            
        // Xerces properties
        if (featureId.startsWith(Constants.XERCES_FEATURE_PREFIX)) {
            final int suffixLength = featureId.length() - Constants.XERCES_FEATURE_PREFIX.length();
            if (suffixLength == Constants.NOTIFY_BUILTIN_REFS_FEATURE.length() && 
                featureId.endsWith(Constants.NOTIFY_BUILTIN_REFS_FEATURE)) {
                fNotifyBuiltInRefs = state;
            }
        }

    } // setFeature(String,boolean)

    /**
     * Returns a list of property identifiers that are recognized by
     * this component. This method may return null if no properties
     * are recognized by this component.
     */
    public String[] getRecognizedProperties() {
        return (String[])(RECOGNIZED_PROPERTIES.clone());
    } // getRecognizedProperties():String[]

    /**
     * Sets the value of a property. This method is called by the component
     * manager any time after reset when a property changes value. 
     * <p>
     * <strong>Note:</strong> Components should silently ignore properties
     * that do not affect the operation of the component.
     * 
     * @param propertyId The property identifier.
     * @param value      The value of the property.
     *
     * @throws SAXNotRecognizedException The component should not throw
     *                                   this exception.
     * @throws SAXNotSupportedException The component should not throw
     *                                  this exception.
     */
    public void setProperty(String propertyId, Object value)
        throws XMLConfigurationException {
        
        super.setProperty(propertyId, value);

        // Xerces properties
        if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
            final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length();
            if (suffixLength == Constants.ENTITY_MANAGER_PROPERTY.length() && 
                propertyId.endsWith(Constants.ENTITY_MANAGER_PROPERTY)) {
                fEntityManager = (XMLEntityManager)value;
                return;
            }
            if (suffixLength == Constants.ENTITY_RESOLVER_PROPERTY.length() && 
                propertyId.endsWith(Constants.ENTITY_RESOLVER_PROPERTY)) {
                fExternalSubsetResolver = (value instanceof ExternalSubsetResolver) ?
                    (ExternalSubsetResolver) value : null;
                return;
            }
        }
        
    } // setProperty(String,Object)

    /** 
     * Returns the default state for a feature, or null if this
     * component does not want to report a default value for this
     * feature.
     *
     * @param featureId The feature identifier.
     *
     * @since Xerces 2.2.0
     */
    public Boolean getFeatureDefault(String featureId) {
        for (int i = 0; i < RECOGNIZED_FEATURES.length; i++) {
            if (RECOGNIZED_FEATURES[i].equals(featureId)) {
                return FEATURE_DEFAULTS[i];
            }
        }
        return null;
    } // getFeatureDefault(String):Boolean

    /** 
     * Returns the default state for a property, or null if this
     * component does not want to report a default value for this
     * property. 
     *
     * @param propertyId The property identifier.
     *
     * @since Xerces 2.2.0
     */
    public Object getPropertyDefault(String propertyId) {
        for (int i = 0; i < RECOGNIZED_PROPERTIES.length; i++) {
            if (RECOGNIZED_PROPERTIES[i].equals(propertyId)) {
                return PROPERTY_DEFAULTS[i];
            }
        }
        return null;
    } // getPropertyDefault(String):Object

    //
    // XMLDocumentSource methods
    //

    /**
     * setDocumentHandler
     * 
     * @param documentHandler 
     */
    public void setDocumentHandler(XMLDocumentHandler documentHandler) {
        fDocumentHandler = documentHandler;
    } // setDocumentHandler(XMLDocumentHandler)


    /** Returns the document handler */
    public XMLDocumentHandler getDocumentHandler(){
        return fDocumentHandler;
    }

    //
    // XMLEntityHandler methods
    //

    /**
     * This method notifies of the start of an entity. The DTD has the
     * pseudo-name of "[dtd]" parameter entity names start with '%'; and
     * general entities are just specified by their name.
     * 
     * @param name     The name of the entity.
     * @param identifier The resource identifier.
     * @param encoding The auto-detected IANA encoding name of the entity
     *                 stream. This value will be null in those situations
     *                 where the entity encoding is not auto-detected (e.g.
     *                 internal entities or a document entity that is
     *                 parsed from a java.io.Reader).
     * @param augs     Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void startEntity(String name, 
                            XMLResourceIdentifier identifier,
                            String encoding, Augmentations augs) throws XNIException {

        // keep track of this entity before fEntityDepth is increased
        if (fEntityDepth == fEntityStack.length) {
            int[] entityarray = new int[fEntityStack.length * 2];
            System.arraycopy(fEntityStack, 0, entityarray, 0, fEntityStack.length);
            fEntityStack = entityarray;
        }
        fEntityStack[fEntityDepth] = fMarkupDepth;

        super.startEntity(name, identifier, encoding, augs);

        // WFC:  entity declared in external subset in standalone doc
        if(fStandalone && fEntityManager.isEntityDeclInExternalSubset(name)) {
            reportFatalError("MSG_REFERENCE_TO_EXTERNALLY_DECLARED_ENTITY_WHEN_STANDALONE",
                new Object[]{name});
        }

        // call handler
        if (fDocumentHandler != null && !fScanningAttribute) {
            if (!name.equals("[xml]")) {
                fDocumentHandler.startGeneralEntity(name, identifier, encoding, augs);
            }
        }

    } // startEntity(String,XMLResourceIdentifier,String)

    /**
     * This method notifies the end of an entity. The DTD has the pseudo-name
     * of "[dtd]" parameter entity names start with '%'; and general entities 
     * are just specified by their name.
     * 
     * @param name The name of the entity.
     * @param augs Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void endEntity(String name, Augmentations augs) throws XNIException {

        // flush possible pending output buffer - see scanContent
        if (fInScanContent && fStringBuffer.length != 0
            && fDocumentHandler != null) {
            fDocumentHandler.characters(fStringBuffer, null);
            fStringBuffer.length = 0; // make sure we know it's been flushed
        }

        super.endEntity(name, augs);

        // make sure markup is properly balanced
        if (fMarkupDepth != fEntityStack[fEntityDepth]) {
            reportFatalError("MarkupEntityMismatch", null);
        }

        // call handler
        if (fDocumentHandler != null && !fScanningAttribute) {
            if (!name.equals("[xml]")) {
                fDocumentHandler.endGeneralEntity(name, augs);
            }
        }
        
    } // endEntity(String)

    //
    // Protected methods
    //

    // dispatcher factory methods

    /** Creates a content dispatcher. */
    protected Dispatcher createContentDispatcher() {
        return new FragmentContentDispatcher();
    } // createContentDispatcher():Dispatcher

    // scanning methods

    /**
     * Scans an XML or text declaration.
     * <p>
     * <pre>
     * [23] XMLDecl ::= '&lt;?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'
     * [24] VersionInfo ::= S 'version' Eq (' VersionNum ' | " VersionNum ")
     * [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' |  "'" EncName "'" )
     * [81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*
     * [32] SDDecl ::= S 'standalone' Eq (("'" ('yes' | 'no') "'")
     *                 | ('"' ('yes' | 'no') '"'))
     *
     * [77] TextDecl ::= '&lt;?xml' VersionInfo? EncodingDecl S? '?>'
     * </pre>
     *
     * @param scanningTextDecl True if a text declaration is to
     *                         be scanned instead of an XML
     *                         declaration.
     */
    protected void scanXMLDeclOrTextDecl(boolean scanningTextDecl) 
        throws IOException, XNIException {

        // scan decl
        super.scanXMLDeclOrTextDecl(scanningTextDecl, fStrings);
        fMarkupDepth--;

        // pseudo-attribute values
        String version = fStrings[0];
        String encoding = fStrings[1];
        String standalone = fStrings[2];