xincludehandler.java

来自「JAVA 所有包」· Java 代码 · 共 1,684 行 · 第 1/5 页

    private boolean fIsXML11;

    // track whether a DTD is being parsed
    private boolean fInDTD;
    
    // track whether the root element of the result infoset has been processed
    private boolean fSeenRootElement;
    
    // track whether the child config needs its features refreshed
    private boolean fNeedCopyFeatures = true;

    // Constructors

    public XIncludeHandler() {
        fDepth = 0;

        fSawFallback[fDepth] = false;
        fSawInclude[fDepth] = false;
        fState[fDepth] = STATE_NORMAL_PROCESSING;
        fNotations = new ArrayList();
        fUnparsedEntities = new ArrayList();

        fBaseURIScope = new IntStack();
        fBaseURI = new Stack();
        fLiteralSystemID = new Stack();
        fExpandedSystemID = new Stack();
        fCurrentBaseURI = new XMLResourceIdentifierImpl();
        
        fLanguageScope = new IntStack();
        fLanguageStack = new Stack();
        fCurrentLanguage = null;
    }

    // XMLComponent methods

    public void reset(XMLComponentManager componentManager)
        throws XNIException {
        fNamespaceContext = null;
        fDepth = 0;
        fResultDepth = isRootDocument() ? 0 : fParentXIncludeHandler.getResultDepth();
        fNotations.clear();
        fUnparsedEntities.clear();
        fParentRelativeURI = null;
        fIsXML11 = false;
        fInDTD = false;
        fSeenRootElement = false;

        fBaseURIScope.clear();
        fBaseURI.clear();
        fLiteralSystemID.clear();
        fExpandedSystemID.clear();
        fLanguageScope.clear();
        fLanguageStack.clear();

        // REVISIT: Find a better method for maintaining
        // the state of the XInclude processor. These arrays
        // can potentially grow quite large. Cleaning them
        // out on reset may be very time consuming. -- mrglavas
        //
        // clear the previous settings from the arrays
        for (int i = 0; i < fState.length; ++i) {
            fState[i] = STATE_NORMAL_PROCESSING;
        }
        for (int i = 0; i < fSawFallback.length; ++i) {
            fSawFallback[i] = false;
        }
        for (int i = 0; i < fSawInclude.length; ++i) {
            fSawInclude[i] = false;
        }
        
        try {
            if (!componentManager.getFeature(PARSER_SETTINGS)) {
                // if parser settings have not changed return.
                return;
            }
        } 
        catch (XMLConfigurationException e) {}
        
        // parser settings changed. Need to refresh features on child config.
        fNeedCopyFeatures = true;

        try {
            fSendUEAndNotationEvents =
                componentManager.getFeature(ALLOW_UE_AND_NOTATION_EVENTS);
            if (fChildConfig != null) {
                fChildConfig.setFeature(
                    ALLOW_UE_AND_NOTATION_EVENTS,
                    fSendUEAndNotationEvents);
            }
        }
        catch (XMLConfigurationException e) {
        }
        
        try {
            fFixupBaseURIs =
                componentManager.getFeature(XINCLUDE_FIXUP_BASE_URIS);
            if (fChildConfig != null) {
                fChildConfig.setFeature(
                    XINCLUDE_FIXUP_BASE_URIS,
                    fFixupBaseURIs);
            }
        }
        catch (XMLConfigurationException e) {
            fFixupBaseURIs = true;
        }
        
        try {
            fFixupLanguage =
                componentManager.getFeature(XINCLUDE_FIXUP_LANGUAGE);
            if (fChildConfig != null) {
                fChildConfig.setFeature(
                    XINCLUDE_FIXUP_LANGUAGE,
                    fFixupLanguage);
            }
        }
        catch (XMLConfigurationException e) {
            fFixupLanguage = true;
        }
        
        // Get symbol table.
        try {
            SymbolTable value =
                (SymbolTable)componentManager.getProperty(SYMBOL_TABLE);
            if (value != null) {
                fSymbolTable = value;
                if (fChildConfig != null) {
                    fChildConfig.setProperty(SYMBOL_TABLE, value);
                }
            }
        }
        catch (XMLConfigurationException e) {
            fSymbolTable = null;
        }

        // Get error reporter.
        try {
            XMLErrorReporter value =
                (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER);
            if (value != null) {
                setErrorReporter(value);
                if (fChildConfig != null) {
                    fChildConfig.setProperty(ERROR_REPORTER, value);
                }
            }
        }
        catch (XMLConfigurationException e) {
            fErrorReporter = null;
        }

        // Get entity resolver.
        try {
            XMLEntityResolver value =
                (XMLEntityResolver)componentManager.getProperty(
                    ENTITY_RESOLVER);

            if (value != null) {
                fEntityResolver = value;
                if (fChildConfig != null) {
                    fChildConfig.setProperty(ENTITY_RESOLVER, value);
                }
            }
        }
        catch (XMLConfigurationException e) {
            fEntityResolver = null;
        }

        // Get security manager.
        try {
            SecurityManager value =
                (SecurityManager)componentManager.getProperty(
                    SECURITY_MANAGER);

            if (value != null) {
                fSecurityManager = value;
                if (fChildConfig != null) {
                    fChildConfig.setProperty(SECURITY_MANAGER, value);
                }
            }
        }
        catch (XMLConfigurationException e) {
            fSecurityManager = null;
        }
        
        // Get buffer size.
        try {
            Integer value =
                (Integer)componentManager.getProperty(
                    BUFFER_SIZE);

            if (value != null && value.intValue() > 0) {
                fBufferSize = value.intValue();
                if (fChildConfig != null) {
                    fChildConfig.setProperty(BUFFER_SIZE, value);
                }
            }
            else {
            	fBufferSize = ((Integer)getPropertyDefault(BUFFER_SIZE)).intValue();
            }
        }
        catch (XMLConfigurationException e) {
        	fBufferSize = ((Integer)getPropertyDefault(BUFFER_SIZE)).intValue();
        }
        
        // Reset XML 1.0 text reader.
        if (fXInclude10TextReader != null) {
        	fXInclude10TextReader.setBufferSize(fBufferSize);
        }
        // Reset XML 1.1 text reader.
        if (fXInclude11TextReader != null) {
            fXInclude11TextReader.setBufferSize(fBufferSize);   
        }

        fSettings = new ParserConfigurationSettings();
        copyFeatures(componentManager, fSettings);
        
        // We don't want a schema validator on the new pipeline,
        // so if it was enabled, we set the feature to false. If
        // the validation feature was also enabled we turn on
        // dynamic validation, so that DTD validation is performed
        // on the included documents only if they have a DOCTYPE. 
        // This is consistent with the behaviour on the main pipeline.
        try {
            if (componentManager.getFeature(SCHEMA_VALIDATION)) {
                fSettings.setFeature(SCHEMA_VALIDATION, false);
                if (componentManager.getFeature(VALIDATION)) {
                    fSettings.setFeature(DYNAMIC_VALIDATION, true);
                }
            }
        }
        catch (XMLConfigurationException e) {}
        
        // Don't reset fChildConfig -- we don't want it to share the same components.
        // It will be reset when it is actually used to parse something.
    } // 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 {
        if (featureId.equals(ALLOW_UE_AND_NOTATION_EVENTS)) {
            fSendUEAndNotationEvents = state;
        }
        if (fSettings != null) {
            fNeedCopyFeatures = true;
            fSettings.setFeature(featureId, 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 {
        if (propertyId.equals(SYMBOL_TABLE)) {
            fSymbolTable = (SymbolTable)value;
            if (fChildConfig != null) {
                fChildConfig.setProperty(propertyId, value);
            }
            return;
        }
        if (propertyId.equals(ERROR_REPORTER)) {
            setErrorReporter((XMLErrorReporter)value);
            if (fChildConfig != null) {
                fChildConfig.setProperty(propertyId, value);
            }
            return;
        }
        if (propertyId.equals(ENTITY_RESOLVER)) {
            fEntityResolver = (XMLEntityResolver)value;
            if (fChildConfig != null) {
                fChildConfig.setProperty(propertyId, value);
            }
            return;
        }
        if (propertyId.equals(SECURITY_MANAGER)) {
            fSecurityManager = (SecurityManager)value;
            if (fChildConfig != null) {
                fChildConfig.setProperty(propertyId, value);
            }
            return;
        }
        if (propertyId.equals(BUFFER_SIZE)) {
            Integer bufferSize = (Integer) value;
            if (fChildConfig != null) {
                fChildConfig.setProperty(propertyId, value);
            }
            if (bufferSize != null && bufferSize.intValue() > 0) {
                fBufferSize = bufferSize.intValue();
                // Reset XML 1.0 text reader.
                if (fXInclude10TextReader != null) {
                    fXInclude10TextReader.setBufferSize(fBufferSize);
                }
                // Reset XML 1.1 text reader.
                if (fXInclude11TextReader != null) {