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/*
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* Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved.
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*/
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/*
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* Copyright 2005 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.sun.org.apache.xerces.internal.impl;
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import com.sun.xml.internal.stream.XMLBufferListener;
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import com.sun.xml.internal.stream.XMLEntityStorage;
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import com.sun.xml.internal.stream.XMLInputFactoryImpl;
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import com.sun.xml.internal.stream.dtd.DTDGrammarUtil;
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import java.io.EOFException;
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import java.io.IOException;
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import javax.xml.stream.XMLInputFactory;
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import javax.xml.stream.events.XMLEvent;
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import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter;
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import com.sun.org.apache.xerces.internal.util.AugmentationsImpl;
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import com.sun.org.apache.xerces.internal.util.XMLAttributesIteratorImpl;
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import com.sun.org.apache.xerces.internal.util.XMLChar;
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import com.sun.org.apache.xerces.internal.util.XMLStringBuffer;
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import com.sun.org.apache.xerces.internal.util.XMLSymbols;
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import com.sun.org.apache.xerces.internal.xni.QName;
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import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
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import com.sun.org.apache.xerces.internal.xni.XMLDocumentHandler;
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import com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier;
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import com.sun.org.apache.xerces.internal.xni.XMLString;
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import com.sun.org.apache.xerces.internal.xni.XNIException;
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import com.sun.org.apache.xerces.internal.xni.parser.XMLComponent;
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import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;
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import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException;
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import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentScanner;
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import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource;
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import com.sun.org.apache.xerces.internal.xni.Augmentations;
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import com.sun.org.apache.xerces.internal.impl.Constants;
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import com.sun.org.apache.xerces.internal.impl.XMLEntityHandler;
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import com.sun.org.apache.xerces.internal.util.SecurityManager;
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import com.sun.org.apache.xerces.internal.util.NamespaceSupport;
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import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
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import javax.xml.stream.XMLStreamConstants;
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import javax.xml.stream.events.XMLEvent;
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/**
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*
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* This class is responsible for scanning the structure and content
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* of document fragments.
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*
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* This class has been modified as per the new design which is more suited to
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* efficiently build pull parser. Lot of improvements have been done and
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* the code has been added to support stax functionality/features.
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*
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* @author Neeraj Bajaj SUN Microsystems
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* @author K.Venugopal SUN Microsystems
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* @author Glenn Marcy, IBM
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* @author Andy Clark, IBM
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* @author Arnaud Le Hors, IBM
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* @author Eric Ye, IBM
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* @author Sunitha Reddy, SUN Microsystems
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* @version $Id: XMLDocumentFragmentScannerImpl.java,v 1.19 2010-11-02 19:54:55 joehw Exp $
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*
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*/
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public class XMLDocumentFragmentScannerImpl
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extends XMLScanner
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implements XMLDocumentScanner, XMLComponent, XMLEntityHandler, XMLBufferListener {
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//
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// Constants
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//
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protected int fElementAttributeLimit;
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/** External subset resolver. **/
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protected ExternalSubsetResolver fExternalSubsetResolver;
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// scanner states
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//XXX this should be divided into more states.
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/** Scanner state: start of markup. */
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protected static final int SCANNER_STATE_START_OF_MARKUP = 21;
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/** Scanner state: content. */
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protected static final int SCANNER_STATE_CONTENT = 22;
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/** Scanner state: processing instruction. */
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protected static final int SCANNER_STATE_PI = 23;
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/** Scanner state: DOCTYPE. */
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protected static final int SCANNER_STATE_DOCTYPE = 24;
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/** Scanner state: XML Declaration */
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protected static final int SCANNER_STATE_XML_DECL = 25;
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/** Scanner state: root element. */
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protected static final int SCANNER_STATE_ROOT_ELEMENT = 26;
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/** Scanner state: comment. */
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protected static final int SCANNER_STATE_COMMENT = 27;
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/** Scanner state: reference. */
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protected static final int SCANNER_STATE_REFERENCE = 28;
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// <book type="hard"> reading attribute name 'type'
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protected static final int SCANNER_STATE_ATTRIBUTE = 29;
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// <book type="hard"> //reading attribute value.
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protected static final int SCANNER_STATE_ATTRIBUTE_VALUE = 30;
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/** Scanner state: trailing misc. USED BY DOCUMENT_SCANNER_IMPL*/
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//protected static final int SCANNER_STATE_TRAILING_MISC = 32;
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/** Scanner state: end of input. */
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protected static final int SCANNER_STATE_END_OF_INPUT = 33;
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/** Scanner state: terminated. */
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protected static final int SCANNER_STATE_TERMINATED = 34;
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/** Scanner state: CDATA section. */
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protected static final int SCANNER_STATE_CDATA = 35;
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/** Scanner state: Text declaration. */
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protected static final int SCANNER_STATE_TEXT_DECL = 36;
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/** Scanner state: Text declaration. */
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protected static final int SCANNER_STATE_CHARACTER_DATA = 37;
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//<book type="hard">foo</book>
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protected static final int SCANNER_STATE_START_ELEMENT_TAG = 38;
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//<book type="hard">foo</book> reading </book>
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protected static final int SCANNER_STATE_END_ELEMENT_TAG = 39;
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protected static final int SCANNER_STATE_CHAR_REFERENCE = 40;
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protected static final int SCANNER_STATE_BUILT_IN_REFS = 41;
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// feature identifiers
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/** Feature identifier: notify built-in refereces. */
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protected static final String NOTIFY_BUILTIN_REFS =
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Constants.XERCES_FEATURE_PREFIX + Constants.NOTIFY_BUILTIN_REFS_FEATURE;
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/** Property identifier: entity resolver. */
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protected static final String ENTITY_RESOLVER =
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Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_RESOLVER_PROPERTY;
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// recognized features and properties
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/** Recognized features. */
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private static final String[] RECOGNIZED_FEATURES = {
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NAMESPACES,
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VALIDATION,
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NOTIFY_BUILTIN_REFS,
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NOTIFY_CHAR_REFS,
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Constants.STAX_REPORT_CDATA_EVENT
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};
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/** Feature defaults. */
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private static final Boolean[] FEATURE_DEFAULTS = {
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Boolean.TRUE,
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null,
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Boolean.FALSE,
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Boolean.FALSE,
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Boolean.TRUE
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};
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/** Recognized properties. */
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private static final String[] RECOGNIZED_PROPERTIES = {
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SYMBOL_TABLE,
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ERROR_REPORTER,
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ENTITY_MANAGER,
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};
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/** Property defaults. */
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private static final Object[] PROPERTY_DEFAULTS = {
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null,
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null,
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null,
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};
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protected static final char [] cdata = {'[','C','D','A','T','A','['};
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protected static final char [] xmlDecl = {'<','?','x','m','l'};
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protected static final char [] endTag = {'<','/'};
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// debugging
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/** Debug scanner state. */
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private static final boolean DEBUG_SCANNER_STATE = false;
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/** Debug driver. */
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private static final boolean DEBUG_DISPATCHER = false;
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/** Debug content driver scanning. */
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protected static final boolean DEBUG_START_END_ELEMENT = false;
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/** Debug driver next */
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protected static final boolean DEBUG_NEXT = false ;
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/** Debug driver next */
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protected static final boolean DEBUG = false;
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protected static final boolean DEBUG_COALESCE = false;
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//
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// Data
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//
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// protected data
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/** Document handler. */
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protected XMLDocumentHandler fDocumentHandler;
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protected int fScannerLastState ;
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/** Entity Storage */
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protected XMLEntityStorage fEntityStore;
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/** Entity stack. */
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protected int[] fEntityStack = new int[4];
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/** Markup depth. */
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protected int fMarkupDepth;
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//is the element empty
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protected boolean fEmptyElement ;
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//track if we are reading attributes, this is usefule while
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//there is a callback
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protected boolean fReadingAttributes = false;
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/** Scanner state. */
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protected int fScannerState;
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/** SubScanner state: inside scanContent method. */
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protected boolean fInScanContent = false;
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protected boolean fLastSectionWasCData = false;
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protected boolean fLastSectionWasEntityReference = false;
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protected boolean fLastSectionWasCharacterData = false;
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/** has external dtd */
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protected boolean fHasExternalDTD;
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/** Standalone. */
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protected boolean fStandaloneSet;
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protected boolean fStandalone;
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protected String fVersion;
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// element information
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/** Current element. */
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protected QName fCurrentElement;
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/** Element stack. */
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protected ElementStack fElementStack = new ElementStack();
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protected ElementStack2 fElementStack2 = new ElementStack2();
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// other info
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/** Document system identifier.
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* REVISIT: So what's this used for? - NG
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* protected String fDocumentSystemId;
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******/
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protected String fPITarget ;
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//xxx do we need to create an extra XMLString object... look for using fTempString for collecting all the data values
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protected XMLString fPIData = new XMLString();
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// features
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/** Notify built-in references. */
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protected boolean fNotifyBuiltInRefs = false;
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//STAX related properties
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//defaultValues.
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protected boolean fReplaceEntityReferences = true;
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protected boolean fSupportExternalEntities = false;
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protected boolean fReportCdataEvent = false ;
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protected boolean fIsCoalesce = false ;
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protected String fDeclaredEncoding = null;
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/** Disallow doctype declaration. */
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protected boolean fDisallowDoctype = false;
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// drivers
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/** Active driver. */
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protected Driver fDriver;
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/** Content driver. */
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protected Driver fContentDriver = createContentDriver();
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// temporary variables
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/** Element QName. */
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protected QName fElementQName = new QName();
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/** Attribute QName. */
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protected QName fAttributeQName = new QName();
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/**
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* CHANGED: Using XMLAttributesIteratorImpl instead of XMLAttributesImpl. This class
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* implements Iterator interface so we can directly give Attributes in the form of
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* iterator.
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*/
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protected XMLAttributesIteratorImpl fAttributes = new XMLAttributesIteratorImpl();
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/** String. */
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protected XMLString fTempString = new XMLString();
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/** String. */
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protected XMLString fTempString2 = new XMLString();
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/** Array of 3 strings. */
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private String[] fStrings = new String[3];
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/** Making the buffer accesible to derived class -- String buffer. */
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protected XMLStringBuffer fStringBuffer = new XMLStringBuffer();
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/** Making the buffer accesible to derived class -- String buffer. */
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protected XMLStringBuffer fStringBuffer2 = new XMLStringBuffer();
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/** stores character data. */
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/** Making the buffer accesible to derived class -- stores PI data */
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protected XMLStringBuffer fContentBuffer = new XMLStringBuffer();
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/** Single character array. */
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private final char[] fSingleChar = new char[1];
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private String fCurrentEntityName = null;
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// New members
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protected boolean fScanToEnd = false;
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protected DTDGrammarUtil dtdGrammarUtil= null;
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protected boolean fAddDefaultAttr = false;
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protected boolean foundBuiltInRefs = false;
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protected SecurityManager fSecurityManager = null;
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//skip element algorithm
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static final short MAX_DEPTH_LIMIT = 5 ;
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static final short ELEMENT_ARRAY_LENGTH = 200 ;
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static final short MAX_POINTER_AT_A_DEPTH = 4 ;
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static final boolean DEBUG_SKIP_ALGORITHM = false;
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//create a elemnet array of length equal to ELEMENT_ARRAY_LENGTH
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String [] fElementArray = new String[ELEMENT_ARRAY_LENGTH] ;
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//pointer location where last element was skipped
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short fLastPointerLocation = 0 ;
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short fElementPointer = 0 ;
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//2D array to store pointer info
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short [] [] fPointerInfo = new short[MAX_DEPTH_LIMIT] [MAX_POINTER_AT_A_DEPTH] ;
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protected String fElementRawname ;
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protected boolean fShouldSkip = false;
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protected boolean fAdd = false ;
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protected boolean fSkip = false;
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/** Reusable Augmentations. */
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private Augmentations fTempAugmentations = null;
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//
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// Constructors
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//
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/** Default constructor. */
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public XMLDocumentFragmentScannerImpl() {
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} // <init>()
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//
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// XMLDocumentScanner methods
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//
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/**
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* Sets the input source.
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*
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* @param inputSource The input source.
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*
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* @throws IOException Thrown on i/o error.
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*/
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public void setInputSource(XMLInputSource inputSource) throws IOException {
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fEntityManager.setEntityHandler(this);
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fEntityManager.startEntity("$fragment$", inputSource, false, true);
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// fDocumentSystemId = fEntityManager.expandSystemId(inputSource.getSystemId());
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} // setInputSource(XMLInputSource)
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/**
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* Scans a document.
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*
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* @param complete True if the scanner should scan the document
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* completely, pushing all events to the registered
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* document handler. A value of false indicates that
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* that the scanner should only scan the next portion
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* of the document and return. A scanner instance is
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* permitted to completely scan a document if it does
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* not support this "pull" scanning model.
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*
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* @return True if there is more to scan, false otherwise.
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*/
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/* public boolean scanDocument(boolean complete)
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throws IOException, XNIException {
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// keep dispatching "events"
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fEntityManager.setEntityHandler(this);
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return true;
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} // scanDocument(boolean):boolean
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*/
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public boolean scanDocument(boolean complete)
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throws IOException, XNIException {
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425 |
|
|
426 |
// keep dispatching "events"
|
|
427 |
fEntityManager.setEntityHandler(this);
|
|
428 |
//System.out.println(" get Document Handler in NSDocumentHandler " + fDocumentHandler );
|
|
429 |
|
|
430 |
int event = next();
|
|
431 |
do {
|
|
432 |
switch (event) {
|
|
433 |
case XMLStreamConstants.START_DOCUMENT :
|
|
434 |
//fDocumentHandler.startDocument(fEntityManager.getEntityScanner(),fEntityManager.getEntityScanner().getVersion(),fNamespaceContext,null);// not able to get
|
|
435 |
break;
|
|
436 |
case XMLStreamConstants.START_ELEMENT :
|
|
437 |
//System.out.println(" in scann element");
|
|
438 |
//fDocumentHandler.startElement(getElementQName(),fAttributes,null);
|
|
439 |
break;
|
|
440 |
case XMLStreamConstants.CHARACTERS :
|
|
441 |
fDocumentHandler.characters(getCharacterData(),null);
|
|
442 |
break;
|
|
443 |
case XMLStreamConstants.SPACE:
|
|
444 |
//check if getCharacterData() is the right function to retrieve ignorableWhitespace information.
|
|
445 |
//System.out.println("in the space");
|
|
446 |
//fDocumentHandler.ignorableWhitespace(getCharacterData(), null);
|
|
447 |
break;
|
|
448 |
case XMLStreamConstants.ENTITY_REFERENCE :
|
|
449 |
//entity reference callback are given in startEntity
|
|
450 |
break;
|
|
451 |
case XMLStreamConstants.PROCESSING_INSTRUCTION :
|
|
452 |
fDocumentHandler.processingInstruction(getPITarget(),getPIData(),null);
|
|
453 |
break;
|
|
454 |
case XMLStreamConstants.COMMENT :
|
|
455 |
//System.out.println(" in COMMENT of the XMLNSDocumentScannerImpl");
|
|
456 |
fDocumentHandler.comment(getCharacterData(),null);
|
|
457 |
break;
|
|
458 |
case XMLStreamConstants.DTD :
|
|
459 |
//all DTD related callbacks are handled in DTDScanner.
|
|
460 |
//1. Stax doesn't define DTD states as it does for XML Document.
|
|
461 |
//therefore we don't need to take care of anything here. So Just break;
|
|
462 |
break;
|
|
463 |
case XMLStreamConstants.CDATA:
|
|
464 |
fDocumentHandler.startCDATA(null);
|
|
465 |
//xxx: check if CDATA values comes from getCharacterData() function
|
|
466 |
fDocumentHandler.characters(getCharacterData(),null);
|
|
467 |
fDocumentHandler.endCDATA(null);
|
|
468 |
//System.out.println(" in CDATA of the XMLNSDocumentScannerImpl");
|
|
469 |
break;
|
|
470 |
case XMLStreamConstants.NOTATION_DECLARATION :
|
|
471 |
break;
|
|
472 |
case XMLStreamConstants.ENTITY_DECLARATION :
|
|
473 |
break;
|
|
474 |
case XMLStreamConstants.NAMESPACE :
|
|
475 |
break;
|
|
476 |
case XMLStreamConstants.ATTRIBUTE :
|
|
477 |
break;
|
|
478 |
case XMLStreamConstants.END_ELEMENT :
|
|
479 |
//do not give callback here.
|
|
480 |
//this callback is given in scanEndElement function.
|
|
481 |
//fDocumentHandler.endElement(getElementQName(),null);
|
|
482 |
break;
|
|
483 |
default :
|
|
484 |
throw new InternalError("processing event: " + event);
|
|
485 |
|
|
486 |
}
|
|
487 |
//System.out.println("here in before calling next");
|
|
488 |
event = next();
|
|
489 |
//System.out.println("here in after calling next");
|
|
490 |
} while (event!=XMLStreamConstants.END_DOCUMENT && complete);
|
|
491 |
|
|
492 |
if(event == XMLStreamConstants.END_DOCUMENT) {
|
|
493 |
fDocumentHandler.endDocument(null);
|
|
494 |
return false;
|
|
495 |
}
|
|
496 |
|
|
497 |
return true;
|
|
498 |
|
|
499 |
} // scanDocument(boolean):boolean
|
|
500 |
|
|
501 |
|
|
502 |
|
|
503 |
public com.sun.org.apache.xerces.internal.xni.QName getElementQName(){
|
|
504 |
if(fScannerLastState == XMLEvent.END_ELEMENT){
|
|
505 |
fElementQName.setValues(fElementStack.getLastPoppedElement());
|
|
506 |
}
|
|
507 |
return fElementQName ;
|
|
508 |
}
|
|
509 |
|
|
510 |
/** return the next state on the input
|
|
511 |
* @return int
|
|
512 |
*/
|
|
513 |
|
|
514 |
public int next() throws IOException, XNIException {
|
|
515 |
return fDriver.next();
|
|
516 |
}
|
|
517 |
|
|
518 |
//
|
|
519 |
// XMLComponent methods
|
|
520 |
//
|
|
521 |
|
|
522 |
/**
|
|
523 |
* Resets the component. The component can query the component manager
|
|
524 |
* about any features and properties that affect the operation of the
|
|
525 |
* component.
|
|
526 |
*
|
|
527 |
* @param componentManager The component manager.
|
|
528 |
*
|
|
529 |
* @throws SAXException Thrown by component on initialization error.
|
|
530 |
* For example, if a feature or property is
|
|
531 |
* required for the operation of the component, the
|
|
532 |
* component manager may throw a
|
|
533 |
* SAXNotRecognizedException or a
|
|
534 |
* SAXNotSupportedException.
|
|
535 |
*/
|
|
536 |
|
|
537 |
public void reset(XMLComponentManager componentManager)
|
|
538 |
throws XMLConfigurationException {
|
|
539 |
|
|
540 |
super.reset(componentManager);
|
|
541 |
|
|
542 |
// other settings
|
|
543 |
// fDocumentSystemId = null;
|
|
544 |
|
|
545 |
// sax features
|
|
546 |
//fAttributes.setNamespaces(fNamespaces);
|
|
547 |
|
|
548 |
// xerces features
|
|
549 |
fReportCdataEvent = componentManager.getFeature(Constants.STAX_REPORT_CDATA_EVENT, true);
|
|
550 |
|
|
551 |
fSecurityManager = (SecurityManager)componentManager.getProperty(Constants.SECURITY_MANAGER, null);
|
|
552 |
fElementAttributeLimit = (fSecurityManager != null)?fSecurityManager.getElementAttrLimit():0;
|
|
553 |
|
|
554 |
fNotifyBuiltInRefs = componentManager.getFeature(NOTIFY_BUILTIN_REFS, false);
|
|
555 |
|
|
556 |
Object resolver = componentManager.getProperty(ENTITY_RESOLVER, null);
|
|
557 |
fExternalSubsetResolver = (resolver instanceof ExternalSubsetResolver) ?
|
|
558 |
(ExternalSubsetResolver) resolver : null;
|
|
559 |
|
|
560 |
// initialize vars
|
|
561 |
fMarkupDepth = 0;
|
|
562 |
fCurrentElement = null;
|
|
563 |
fElementStack.clear();
|
|
564 |
fHasExternalDTD = false;
|
|
565 |
fStandaloneSet = false;
|
|
566 |
fStandalone = false;
|
|
567 |
fInScanContent = false;
|
|
568 |
//skipping algorithm
|
|
569 |
fShouldSkip = false;
|
|
570 |
fAdd = false;
|
|
571 |
fSkip = false;
|
|
572 |
|
|
573 |
//attribute
|
|
574 |
fReadingAttributes = false;
|
|
575 |
//xxx: external entities are supported in Xerces
|
|
576 |
// it would be good to define feature for this case
|
|
577 |
fSupportExternalEntities = true;
|
|
578 |
fReplaceEntityReferences = true;
|
|
579 |
fIsCoalesce = false;
|
|
580 |
|
|
581 |
// setup Driver
|
|
582 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
583 |
setDriver(fContentDriver);
|
|
584 |
fEntityStore = fEntityManager.getEntityStore();
|
|
585 |
|
|
586 |
dtdGrammarUtil = null;
|
|
587 |
|
|
588 |
|
|
589 |
//fEntityManager.test();
|
|
590 |
} // reset(XMLComponentManager)
|
|
591 |
|
|
592 |
|
|
593 |
public void reset(PropertyManager propertyManager){
|
|
594 |
|
|
595 |
super.reset(propertyManager);
|
|
596 |
|
|
597 |
// other settings
|
|
598 |
// fDocumentSystemId = null;
|
|
599 |
fNamespaces = ((Boolean)propertyManager.getProperty(XMLInputFactory.IS_NAMESPACE_AWARE)).booleanValue();
|
|
600 |
fNotifyBuiltInRefs = false ;
|
|
601 |
|
|
602 |
// initialize vars
|
|
603 |
fMarkupDepth = 0;
|
|
604 |
fCurrentElement = null;
|
|
605 |
fShouldSkip = false;
|
|
606 |
fAdd = false;
|
|
607 |
fSkip = false;
|
|
608 |
fElementStack.clear();
|
|
609 |
//fElementStack2.clear();
|
|
610 |
fHasExternalDTD = false;
|
|
611 |
fStandaloneSet = false;
|
|
612 |
fStandalone = false;
|
|
613 |
//fReplaceEntityReferences = true;
|
|
614 |
//fSupportExternalEntities = true;
|
|
615 |
Boolean bo = (Boolean)propertyManager.getProperty(XMLInputFactoryImpl.IS_REPLACING_ENTITY_REFERENCES);
|
|
616 |
fReplaceEntityReferences = bo.booleanValue();
|
|
617 |
bo = (Boolean)propertyManager.getProperty(XMLInputFactoryImpl.IS_SUPPORTING_EXTERNAL_ENTITIES);
|
|
618 |
fSupportExternalEntities = bo.booleanValue();
|
|
619 |
Boolean cdata = (Boolean)propertyManager.getProperty(Constants.ZEPHYR_PROPERTY_PREFIX + Constants.STAX_REPORT_CDATA_EVENT) ;
|
|
620 |
if(cdata != null)
|
|
621 |
fReportCdataEvent = cdata.booleanValue() ;
|
|
622 |
Boolean coalesce = (Boolean)propertyManager.getProperty(XMLInputFactory.IS_COALESCING) ;
|
|
623 |
if(coalesce != null)
|
|
624 |
fIsCoalesce = coalesce.booleanValue();
|
|
625 |
fReportCdataEvent = fIsCoalesce ? false : (fReportCdataEvent && true) ;
|
|
626 |
//if fIsCoalesce is set to true, set the value of fReplaceEntityReferences to true,
|
|
627 |
//if fIsCoalesce is set to false, take the value of fReplaceEntityReferences as set by application
|
|
628 |
fReplaceEntityReferences = fIsCoalesce ? true : fReplaceEntityReferences;
|
|
629 |
// setup Driver
|
|
630 |
//we dont need to do this -- nb.
|
|
631 |
//setScannerState(SCANNER_STATE_CONTENT);
|
|
632 |
//setDriver(fContentDriver);
|
|
633 |
fEntityStore = fEntityManager.getEntityStore();
|
|
634 |
//fEntityManager.test();
|
|
635 |
|
|
636 |
dtdGrammarUtil = null;
|
|
637 |
|
|
638 |
} // reset(XMLComponentManager)
|
|
639 |
|
|
640 |
/**
|
|
641 |
* Returns a list of feature identifiers that are recognized by
|
|
642 |
* this component. This method may return null if no features
|
|
643 |
* are recognized by this component.
|
|
644 |
*/
|
|
645 |
public String[] getRecognizedFeatures() {
|
|
646 |
return (String[])(RECOGNIZED_FEATURES.clone());
|
|
647 |
} // getRecognizedFeatures():String[]
|
|
648 |
|
|
649 |
/**
|
|
650 |
* Sets the state of a feature. This method is called by the component
|
|
651 |
* manager any time after reset when a feature changes state.
|
|
652 |
* <p>
|
|
653 |
* <strong>Note:</strong> Components should silently ignore features
|
|
654 |
* that do not affect the operation of the component.
|
|
655 |
*
|
|
656 |
* @param featureId The feature identifier.
|
|
657 |
* @param state The state of the feature.
|
|
658 |
*
|
|
659 |
* @throws SAXNotRecognizedException The component should not throw
|
|
660 |
* this exception.
|
|
661 |
* @throws SAXNotSupportedException The component should not throw
|
|
662 |
* this exception.
|
|
663 |
*/
|
|
664 |
public void setFeature(String featureId, boolean state)
|
|
665 |
throws XMLConfigurationException {
|
|
666 |
|
|
667 |
super.setFeature(featureId, state);
|
|
668 |
|
|
669 |
// Xerces properties
|
|
670 |
if (featureId.startsWith(Constants.XERCES_FEATURE_PREFIX)) {
|
|
671 |
String feature = featureId.substring(Constants.XERCES_FEATURE_PREFIX.length());
|
|
672 |
if (feature.equals(Constants.NOTIFY_BUILTIN_REFS_FEATURE)) {
|
|
673 |
fNotifyBuiltInRefs = state;
|
|
674 |
}
|
|
675 |
}
|
|
676 |
|
|
677 |
} // setFeature(String,boolean)
|
|
678 |
|
|
679 |
/**
|
|
680 |
* Returns a list of property identifiers that are recognized by
|
|
681 |
* this component. This method may return null if no properties
|
|
682 |
* are recognized by this component.
|
|
683 |
*/
|
|
684 |
public String[] getRecognizedProperties() {
|
|
685 |
return (String[])(RECOGNIZED_PROPERTIES.clone());
|
|
686 |
} // getRecognizedProperties():String[]
|
|
687 |
|
|
688 |
/**
|
|
689 |
* Sets the value of a property. This method is called by the component
|
|
690 |
* manager any time after reset when a property changes value.
|
|
691 |
* <p>
|
|
692 |
* <strong>Note:</strong> Components should silently ignore properties
|
|
693 |
* that do not affect the operation of the component.
|
|
694 |
*
|
|
695 |
* @param propertyId The property identifier.
|
|
696 |
* @param value The value of the property.
|
|
697 |
*
|
|
698 |
* @throws SAXNotRecognizedException The component should not throw
|
|
699 |
* this exception.
|
|
700 |
* @throws SAXNotSupportedException The component should not throw
|
|
701 |
* this exception.
|
|
702 |
*/
|
|
703 |
public void setProperty(String propertyId, Object value)
|
|
704 |
throws XMLConfigurationException {
|
|
705 |
|
|
706 |
super.setProperty(propertyId, value);
|
|
707 |
|
|
708 |
// Xerces properties
|
|
709 |
if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
|
|
710 |
final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length();
|
|
711 |
if (suffixLength == Constants.ENTITY_MANAGER_PROPERTY.length() &&
|
|
712 |
propertyId.endsWith(Constants.ENTITY_MANAGER_PROPERTY)) {
|
|
713 |
fEntityManager = (XMLEntityManager)value;
|
|
714 |
return;
|
|
715 |
}
|
|
716 |
if (suffixLength == Constants.ENTITY_RESOLVER_PROPERTY.length() &&
|
|
717 |
propertyId.endsWith(Constants.ENTITY_RESOLVER_PROPERTY)) {
|
|
718 |
fExternalSubsetResolver = (value instanceof ExternalSubsetResolver) ?
|
|
719 |
(ExternalSubsetResolver) value : null;
|
|
720 |
return;
|
|
721 |
}
|
|
722 |
}
|
|
723 |
|
|
724 |
|
|
725 |
// Xerces properties
|
|
726 |
if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
|
|
727 |
String property = propertyId.substring(Constants.XERCES_PROPERTY_PREFIX.length());
|
|
728 |
if (property.equals(Constants.ENTITY_MANAGER_PROPERTY)) {
|
|
729 |
fEntityManager = (XMLEntityManager)value;
|
|
730 |
}
|
|
731 |
return;
|
|
732 |
}
|
|
733 |
|
|
734 |
} // setProperty(String,Object)
|
|
735 |
|
|
736 |
/**
|
|
737 |
* Returns the default state for a feature, or null if this
|
|
738 |
* component does not want to report a default value for this
|
|
739 |
* feature.
|
|
740 |
*
|
|
741 |
* @param featureId The feature identifier.
|
|
742 |
*
|
|
743 |
* @since Xerces 2.2.0
|
|
744 |
*/
|
|
745 |
public Boolean getFeatureDefault(String featureId) {
|
|
746 |
for (int i = 0; i < RECOGNIZED_FEATURES.length; i++) {
|
|
747 |
if (RECOGNIZED_FEATURES[i].equals(featureId)) {
|
|
748 |
return FEATURE_DEFAULTS[i];
|
|
749 |
}
|
|
750 |
}
|
|
751 |
return null;
|
|
752 |
} // getFeatureDefault(String):Boolean
|
|
753 |
|
|
754 |
/**
|
|
755 |
* Returns the default state for a property, or null if this
|
|
756 |
* component does not want to report a default value for this
|
|
757 |
* property.
|
|
758 |
*
|
|
759 |
* @param propertyId The property identifier.
|
|
760 |
*
|
|
761 |
* @since Xerces 2.2.0
|
|
762 |
*/
|
|
763 |
public Object getPropertyDefault(String propertyId) {
|
|
764 |
for (int i = 0; i < RECOGNIZED_PROPERTIES.length; i++) {
|
|
765 |
if (RECOGNIZED_PROPERTIES[i].equals(propertyId)) {
|
|
766 |
return PROPERTY_DEFAULTS[i];
|
|
767 |
}
|
|
768 |
}
|
|
769 |
return null;
|
|
770 |
} // getPropertyDefault(String):Object
|
|
771 |
|
|
772 |
//
|
|
773 |
// XMLDocumentSource methods
|
|
774 |
//
|
|
775 |
|
|
776 |
/**
|
|
777 |
* setDocumentHandler
|
|
778 |
*
|
|
779 |
* @param documentHandler
|
|
780 |
*/
|
|
781 |
public void setDocumentHandler(XMLDocumentHandler documentHandler) {
|
|
782 |
fDocumentHandler = documentHandler;
|
|
783 |
//System.out.println(" In Set DOCUMENT HANDLER" + fDocumentHandler + " scanner =" + this);
|
|
784 |
} // setDocumentHandler(XMLDocumentHandler)
|
|
785 |
|
|
786 |
|
|
787 |
/** Returns the document handler */
|
|
788 |
public XMLDocumentHandler getDocumentHandler(){
|
|
789 |
return fDocumentHandler;
|
|
790 |
}
|
|
791 |
|
|
792 |
//
|
|
793 |
// XMLEntityHandler methods
|
|
794 |
//
|
|
795 |
|
|
796 |
/**
|
|
797 |
* This method notifies of the start of an entity. The DTD has the
|
|
798 |
* pseudo-name of "[dtd]" parameter entity names start with '%'; and
|
|
799 |
* general entities are just specified by their name.
|
|
800 |
*
|
|
801 |
* @param name The name of the entity.
|
|
802 |
* @param identifier The resource identifier.
|
|
803 |
* @param encoding The auto-detected IANA encoding name of the entity
|
|
804 |
* stream. This value will be null in those situations
|
|
805 |
* where the entity encoding is not auto-detected (e.g.
|
|
806 |
* internal entities or a document entity that is
|
|
807 |
* parsed from a java.io.Reader).
|
|
808 |
*
|
|
809 |
* @throws XNIException Thrown by handler to signal an error.
|
|
810 |
*/
|
|
811 |
public void startEntity(String name,
|
|
812 |
XMLResourceIdentifier identifier,
|
|
813 |
String encoding, Augmentations augs) throws XNIException {
|
|
814 |
|
|
815 |
// keep track of this entity before fEntityDepth is increased
|
|
816 |
if (fEntityDepth == fEntityStack.length) {
|
|
817 |
int[] entityarray = new int[fEntityStack.length * 2];
|
|
818 |
System.arraycopy(fEntityStack, 0, entityarray, 0, fEntityStack.length);
|
|
819 |
fEntityStack = entityarray;
|
|
820 |
}
|
|
821 |
fEntityStack[fEntityDepth] = fMarkupDepth;
|
|
822 |
|
|
823 |
super.startEntity(name, identifier, encoding, augs);
|
|
824 |
|
|
825 |
// WFC: entity declared in external subset in standalone doc
|
|
826 |
if(fStandalone && fEntityStore.isEntityDeclInExternalSubset(name)) {
|
|
827 |
reportFatalError("MSG_REFERENCE_TO_EXTERNALLY_DECLARED_ENTITY_WHEN_STANDALONE",
|
|
828 |
new Object[]{name});
|
|
829 |
}
|
|
830 |
|
|
831 |
/** we are not calling the handlers yet.. */
|
|
832 |
// call handler
|
|
833 |
if (fDocumentHandler != null && !fScanningAttribute) {
|
|
834 |
if (!name.equals("[xml]")) {
|
|
835 |
fDocumentHandler.startGeneralEntity(name, identifier, encoding, null);
|
|
836 |
}
|
|
837 |
}
|
|
838 |
|
|
839 |
} // startEntity(String,XMLResourceIdentifier,String)
|
|
840 |
|
|
841 |
/**
|
|
842 |
* This method notifies the end of an entity. The DTD has the pseudo-name
|
|
843 |
* of "[dtd]" parameter entity names start with '%'; and general entities
|
|
844 |
* are just specified by their name.
|
|
845 |
*
|
|
846 |
* @param name The name of the entity.
|
|
847 |
*
|
|
848 |
* @throws XNIException Thrown by handler to signal an error.
|
|
849 |
*/
|
|
850 |
public void endEntity(String name, Augmentations augs) throws IOException, XNIException {
|
|
851 |
|
|
852 |
/**
|
|
853 |
* // flush possible pending output buffer - see scanContent
|
|
854 |
* if (fInScanContent && fStringBuffer.length != 0
|
|
855 |
* && fDocumentHandler != null) {
|
|
856 |
* fDocumentHandler.characters(fStringBuffer, null);
|
|
857 |
* fStringBuffer.length = 0; // make sure we know it's been flushed
|
|
858 |
* }
|
|
859 |
*/
|
|
860 |
super.endEntity(name, augs);
|
|
861 |
|
|
862 |
// make sure markup is properly balanced
|
|
863 |
if (fMarkupDepth != fEntityStack[fEntityDepth]) {
|
|
864 |
reportFatalError("MarkupEntityMismatch", null);
|
|
865 |
}
|
|
866 |
|
|
867 |
/**/
|
|
868 |
// call handler
|
|
869 |
if (fDocumentHandler != null && !fScanningAttribute) {
|
|
870 |
if (!name.equals("[xml]")) {
|
|
871 |
fDocumentHandler.endGeneralEntity(name, null);
|
|
872 |
}
|
|
873 |
}
|
|
874 |
|
|
875 |
|
|
876 |
} // endEntity(String)
|
|
877 |
|
|
878 |
//
|
|
879 |
// Protected methods
|
|
880 |
//
|
|
881 |
|
|
882 |
// Driver factory methods
|
|
883 |
|
|
884 |
/** Creates a content Driver. */
|
|
885 |
protected Driver createContentDriver() {
|
|
886 |
return new FragmentContentDriver();
|
|
887 |
} // createContentDriver():Driver
|
|
888 |
|
|
889 |
// scanning methods
|
|
890 |
|
|
891 |
/**
|
|
892 |
* Scans an XML or text declaration.
|
|
893 |
* <p>
|
|
894 |
* <pre>
|
|
895 |
* [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'
|
|
896 |
* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' | " VersionNum ")
|
|
897 |
* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'" )
|
|
898 |
* [81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*
|
|
899 |
* [32] SDDecl ::= S 'standalone' Eq (("'" ('yes' | 'no') "'")
|
|
900 |
* | ('"' ('yes' | 'no') '"'))
|
|
901 |
*
|
|
902 |
* [77] TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>'
|
|
903 |
* </pre>
|
|
904 |
*
|
|
905 |
* @param scanningTextDecl True if a text declaration is to
|
|
906 |
* be scanned instead of an XML
|
|
907 |
* declaration.
|
|
908 |
*/
|
|
909 |
protected void scanXMLDeclOrTextDecl(boolean scanningTextDecl)
|
|
910 |
throws IOException, XNIException {
|
|
911 |
|
|
912 |
// scan decl
|
|
913 |
super.scanXMLDeclOrTextDecl(scanningTextDecl, fStrings);
|
|
914 |
fMarkupDepth--;
|
|
915 |
|
|
916 |
// pseudo-attribute values
|
|
917 |
String version = fStrings[0];
|
|
918 |
String encoding = fStrings[1];
|
|
919 |
String standalone = fStrings[2];
|
|
920 |
fDeclaredEncoding = encoding;
|
|
921 |
// set standalone
|
|
922 |
fStandaloneSet = standalone != null;
|
|
923 |
fStandalone = fStandaloneSet && standalone.equals("yes");
|
|
924 |
///xxx see where its used.. this is not used anywhere. it may be useful for entity to store this information
|
|
925 |
//but this information is only related with Document Entity.
|
|
926 |
fEntityManager.setStandalone(fStandalone);
|
|
927 |
|
|
928 |
|
|
929 |
// call handler
|
|
930 |
if (fDocumentHandler != null) {
|
|
931 |
if (scanningTextDecl) {
|
|
932 |
fDocumentHandler.textDecl(version, encoding, null);
|
|
933 |
} else {
|
|
934 |
fDocumentHandler.xmlDecl(version, encoding, standalone, null);
|
|
935 |
}
|
|
936 |
}
|
|
937 |
|
|
938 |
if(version != null){
|
|
939 |
fEntityScanner.setVersion(version);
|
|
940 |
fEntityScanner.setXMLVersion(version);
|
|
941 |
}
|
|
942 |
// set encoding on reader, only if encoding was not specified by the application explicitly
|
|
943 |
if (encoding != null && !fEntityScanner.getCurrentEntity().isEncodingExternallySpecified()) {
|
|
944 |
fEntityScanner.setEncoding(encoding);
|
|
945 |
}
|
|
946 |
|
|
947 |
} // scanXMLDeclOrTextDecl(boolean)
|
|
948 |
|
|
949 |
public String getPITarget(){
|
|
950 |
return fPITarget ;
|
|
951 |
}
|
|
952 |
|
|
953 |
public XMLStringBuffer getPIData(){
|
|
954 |
return fContentBuffer ;
|
|
955 |
}
|
|
956 |
|
|
957 |
//XXX: why not this function behave as per the state of the parser?
|
|
958 |
public XMLString getCharacterData(){
|
|
959 |
if(fUsebuffer){
|
|
960 |
return fContentBuffer ;
|
|
961 |
}else{
|
|
962 |
return fTempString;
|
|
963 |
}
|
|
964 |
|
|
965 |
}
|
|
966 |
|
|
967 |
|
|
968 |
/**
|
|
969 |
* Scans a processing data. This is needed to handle the situation
|
|
970 |
* where a document starts with a processing instruction whose
|
|
971 |
* target name <em>starts with</em> "xml". (e.g. xmlfoo)
|
|
972 |
*
|
|
973 |
* @param target The PI target
|
|
974 |
* @param data The XMLStringBuffer to fill in with the data
|
|
975 |
*/
|
|
976 |
protected void scanPIData(String target, XMLStringBuffer data)
|
|
977 |
throws IOException, XNIException {
|
|
978 |
|
|
979 |
super.scanPIData(target, data);
|
|
980 |
|
|
981 |
//set the PI target and values
|
|
982 |
fPITarget = target ;
|
|
983 |
|
|
984 |
fMarkupDepth--;
|
|
985 |
|
|
986 |
} // scanPIData(String)
|
|
987 |
|
|
988 |
/**
|
|
989 |
* Scans a comment.
|
|
990 |
* <p>
|
|
991 |
* <pre>
|
|
992 |
* [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
|
|
993 |
* </pre>
|
|
994 |
* <p>
|
|
995 |
* <strong>Note:</strong> Called after scanning past '<!--'
|
|
996 |
*/
|
|
997 |
protected void scanComment() throws IOException, XNIException {
|
|
998 |
fContentBuffer.clear();
|
|
999 |
scanComment(fContentBuffer);
|
|
1000 |
//getTextCharacters can also be called for reading comments
|
|
1001 |
fUsebuffer = true;
|
|
1002 |
fMarkupDepth--;
|
|
1003 |
|
|
1004 |
} // scanComment()
|
|
1005 |
|
|
1006 |
//xxx value returned by this function may not remain valid if another event is scanned.
|
|
1007 |
public String getComment(){
|
|
1008 |
return fContentBuffer.toString();
|
|
1009 |
}
|
|
1010 |
|
|
1011 |
void addElement(String rawname){
|
|
1012 |
if(fElementPointer < ELEMENT_ARRAY_LENGTH){
|
|
1013 |
//storing element raw name in a linear list of array
|
|
1014 |
fElementArray[fElementPointer] = rawname ;
|
|
1015 |
//storing elemnetPointer for particular element depth
|
|
1016 |
|
|
1017 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1018 |
StringBuffer sb = new StringBuffer() ;
|
|
1019 |
sb.append(" Storing element information ") ;
|
|
1020 |
sb.append(" fElementPointer = " + fElementPointer) ;
|
|
1021 |
sb.append(" fElementRawname = " + fElementQName.rawname) ;
|
|
1022 |
sb.append(" fElementStack.fDepth = " + fElementStack.fDepth);
|
|
1023 |
System.out.println(sb.toString()) ;
|
|
1024 |
}
|
|
1025 |
|
|
1026 |
//store pointer information only when element depth is less MAX_DEPTH_LIMIT
|
|
1027 |
if(fElementStack.fDepth < MAX_DEPTH_LIMIT){
|
|
1028 |
short column = storePointerForADepth(fElementPointer);
|
|
1029 |
if(column > 0){
|
|
1030 |
short pointer = getElementPointer((short)fElementStack.fDepth, (short)(column - 1) );
|
|
1031 |
//identity comparison shouldn't take much time and we can rely on this
|
|
1032 |
//since its guaranteed to have same object id for same string.
|
|
1033 |
if(rawname == fElementArray[pointer]){
|
|
1034 |
fShouldSkip = true ;
|
|
1035 |
fLastPointerLocation = pointer ;
|
|
1036 |
//reset the things and return.
|
|
1037 |
resetPointer((short)fElementStack.fDepth , column) ;
|
|
1038 |
fElementArray[fElementPointer] = null ;
|
|
1039 |
return ;
|
|
1040 |
}else{
|
|
1041 |
fShouldSkip = false ;
|
|
1042 |
}
|
|
1043 |
}
|
|
1044 |
}
|
|
1045 |
fElementPointer++ ;
|
|
1046 |
}
|
|
1047 |
}
|
|
1048 |
|
|
1049 |
|
|
1050 |
void resetPointer(short depth, short column){
|
|
1051 |
fPointerInfo[depth] [column] = (short)0;
|
|
1052 |
}
|
|
1053 |
|
|
1054 |
//returns column information at which pointer was stored.
|
|
1055 |
short storePointerForADepth(short elementPointer){
|
|
1056 |
short depth = (short) fElementStack.fDepth ;
|
|
1057 |
|
|
1058 |
//Stores element pointer locations at particular depth , only 4 pointer locations
|
|
1059 |
//are stored at particular depth for now.
|
|
1060 |
for(short i = 0 ; i < MAX_POINTER_AT_A_DEPTH ; i++){
|
|
1061 |
|
|
1062 |
if(canStore(depth, i)){
|
|
1063 |
fPointerInfo[depth][i] = elementPointer ;
|
|
1064 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1065 |
StringBuffer sb = new StringBuffer() ;
|
|
1066 |
sb.append(" Pointer information ") ;
|
|
1067 |
sb.append(" fElementPointer = " + fElementPointer) ;
|
|
1068 |
sb.append(" fElementStack.fDepth = " + fElementStack.fDepth);
|
|
1069 |
sb.append(" column = " + i ) ;
|
|
1070 |
System.out.println(sb.toString()) ;
|
|
1071 |
}
|
|
1072 |
return i;
|
|
1073 |
}
|
|
1074 |
//else
|
|
1075 |
//pointer was not stored because we reached the limit
|
|
1076 |
}
|
|
1077 |
return -1 ;
|
|
1078 |
}
|
|
1079 |
|
|
1080 |
boolean canStore(short depth, short column){
|
|
1081 |
//colum = 0 , means first element at particular depth
|
|
1082 |
//column = 1, means second element at particular depth
|
|
1083 |
// calle should make sure that it doesn't call for value outside allowed co-ordinates
|
|
1084 |
return fPointerInfo[depth][column] == 0 ? true : false ;
|
|
1085 |
}
|
|
1086 |
|
|
1087 |
|
|
1088 |
short getElementPointer(short depth, short column){
|
|
1089 |
//colum = 0 , means first element at particular depth
|
|
1090 |
//column = 1, means second element at particular depth
|
|
1091 |
// calle should make sure that it doesn't call for value outside allowed co-ordinates
|
|
1092 |
return fPointerInfo[depth][column] ;
|
|
1093 |
}
|
|
1094 |
|
|
1095 |
//this function assumes that string passed is not null and skips
|
|
1096 |
//the following string from the buffer this makes sure
|
|
1097 |
boolean skipFromTheBuffer(String rawname) throws IOException{
|
|
1098 |
if(fEntityScanner.skipString(rawname)){
|
|
1099 |
char c = (char)fEntityScanner.peekChar() ;
|
|
1100 |
//If the start element was completely skipped we should encounter either ' '(space),
|
|
1101 |
//or '/' (in case of empty element) or '>'
|
|
1102 |
if( c == ' ' || c == '/' || c == '>'){
|
|
1103 |
fElementRawname = rawname ;
|
|
1104 |
return true ;
|
|
1105 |
} else{
|
|
1106 |
return false;
|
|
1107 |
}
|
|
1108 |
} else
|
|
1109 |
return false ;
|
|
1110 |
}
|
|
1111 |
|
|
1112 |
boolean skipQElement(String rawname) throws IOException{
|
|
1113 |
|
|
1114 |
final int c = fEntityScanner.getChar(rawname.length());
|
|
1115 |
//if this character is still valid element name -- this means string can't match
|
|
1116 |
if(XMLChar.isName(c)){
|
|
1117 |
return false;
|
|
1118 |
}else{
|
|
1119 |
return fEntityScanner.skipString(rawname);
|
|
1120 |
}
|
|
1121 |
}
|
|
1122 |
|
|
1123 |
protected boolean skipElement() throws IOException {
|
|
1124 |
|
|
1125 |
if(!fShouldSkip) return false ;
|
|
1126 |
|
|
1127 |
if(fLastPointerLocation != 0){
|
|
1128 |
//Look at the next element stored in the array list.. we might just get a match.
|
|
1129 |
String rawname = fElementArray[fLastPointerLocation + 1] ;
|
|
1130 |
if(rawname != null && skipFromTheBuffer(rawname)){
|
|
1131 |
fLastPointerLocation++ ;
|
|
1132 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1133 |
System.out.println("Element " + fElementRawname + " was SKIPPED at pointer location = " + fLastPointerLocation);
|
|
1134 |
}
|
|
1135 |
return true ;
|
|
1136 |
} else{
|
|
1137 |
//reset it back to zero... we haven't got the correct subset yet.
|
|
1138 |
fLastPointerLocation = 0 ;
|
|
1139 |
|
|
1140 |
}
|
|
1141 |
}
|
|
1142 |
//xxx: we can put some logic here as from what column it should start looking
|
|
1143 |
//for now we always start at 0
|
|
1144 |
//fallback to tolerant algorithm, it would look for differnt element stored at different
|
|
1145 |
//depth and get us the pointer location.
|
|
1146 |
return fShouldSkip && skipElement((short)0);
|
|
1147 |
|
|
1148 |
}
|
|
1149 |
|
|
1150 |
//start of the column at which it should try searching
|
|
1151 |
boolean skipElement(short column) throws IOException {
|
|
1152 |
short depth = (short)fElementStack.fDepth ;
|
|
1153 |
|
|
1154 |
if(depth > MAX_DEPTH_LIMIT){
|
|
1155 |
return fShouldSkip = false ;
|
|
1156 |
}
|
|
1157 |
for(short i = column ; i < MAX_POINTER_AT_A_DEPTH ; i++){
|
|
1158 |
short pointer = getElementPointer(depth , i ) ;
|
|
1159 |
|
|
1160 |
if(pointer == 0){
|
|
1161 |
return fShouldSkip = false ;
|
|
1162 |
}
|
|
1163 |
|
|
1164 |
if(fElementArray[pointer] != null && skipFromTheBuffer(fElementArray[pointer])){
|
|
1165 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1166 |
System.out.println();
|
|
1167 |
System.out.println("Element " + fElementRawname + " was SKIPPED at depth = " + fElementStack.fDepth + " column = " + column );
|
|
1168 |
System.out.println();
|
|
1169 |
}
|
|
1170 |
fLastPointerLocation = pointer ;
|
|
1171 |
return fShouldSkip = true ;
|
|
1172 |
}
|
|
1173 |
}
|
|
1174 |
return fShouldSkip = false ;
|
|
1175 |
}
|
|
1176 |
|
|
1177 |
/**
|
|
1178 |
* Scans a start element. This method will handle the binding of
|
|
1179 |
* namespace information and notifying the handler of the start
|
|
1180 |
* of the element.
|
|
1181 |
* <p>
|
|
1182 |
* <pre>
|
|
1183 |
* [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
|
|
1184 |
* [40] STag ::= '<' Name (S Attribute)* S? '>'
|
|
1185 |
* </pre>
|
|
1186 |
* <p>
|
|
1187 |
* <strong>Note:</strong> This method assumes that the leading
|
|
1188 |
* '<' character has been consumed.
|
|
1189 |
* <p>
|
|
1190 |
* <strong>Note:</strong> This method uses the fElementQName and
|
|
1191 |
* fAttributes variables. The contents of these variables will be
|
|
1192 |
* destroyed. The caller should copy important information out of
|
|
1193 |
* these variables before calling this method.
|
|
1194 |
* NB: Content in fAttributes is valid only till the state of the parser is XMLEvent.START_ELEMENT
|
|
1195 |
*
|
|
1196 |
* @return True if element is empty. (i.e. It matches
|
|
1197 |
* production [44].
|
|
1198 |
*/
|
|
1199 |
// fElementQName will have the details of element just read..
|
|
1200 |
// fAttributes will have the details of all the attributes.
|
|
1201 |
protected boolean scanStartElement()
|
|
1202 |
throws IOException, XNIException {
|
|
1203 |
|
|
1204 |
if (DEBUG_START_END_ELEMENT) System.out.println( this.getClass().toString() + ">>> scanStartElement()");
|
|
1205 |
//when skipping is true and no more elements should be added
|
|
1206 |
if(fSkip && !fAdd){
|
|
1207 |
//get the stored element -- if everything goes right this should match the
|
|
1208 |
//token in the buffer
|
|
1209 |
|
|
1210 |
QName name = fElementStack.getNext();
|
|
1211 |
|
|
1212 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1213 |
System.out.println("Trying to skip String = " + name.rawname);
|
|
1214 |
}
|
|
1215 |
|
|
1216 |
//Be conservative -- if skipping fails -- stop.
|
|
1217 |
fSkip = fEntityScanner.skipString(name.rawname);
|
|
1218 |
|
|
1219 |
if(fSkip){
|
|
1220 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1221 |
System.out.println("Element SUCESSFULLY skipped = " + name.rawname);
|
|
1222 |
}
|
|
1223 |
fElementStack.push();
|
|
1224 |
fElementQName = name;
|
|
1225 |
}else{
|
|
1226 |
//if skipping fails reposition the stack or fallback to normal way of processing
|
|
1227 |
fElementStack.reposition();
|
|
1228 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1229 |
System.out.println("Element was NOT skipped, REPOSITIONING stack" );
|
|
1230 |
}
|
|
1231 |
}
|
|
1232 |
}
|
|
1233 |
|
|
1234 |
//we are still at the stage of adding elements
|
|
1235 |
//the elements were not matched or
|
|
1236 |
//fSkip is not set to true
|
|
1237 |
if(!fSkip || fAdd){
|
|
1238 |
//get the next element from the stack
|
|
1239 |
fElementQName = fElementStack.nextElement();
|
|
1240 |
// name
|
|
1241 |
if (fNamespaces) {
|
|
1242 |
fEntityScanner.scanQName(fElementQName);
|
|
1243 |
} else {
|
|
1244 |
String name = fEntityScanner.scanName();
|
|
1245 |
fElementQName.setValues(null, name, name, null);
|
|
1246 |
}
|
|
1247 |
|
|
1248 |
if(DEBUG)System.out.println("Element scanned in start element is " + fElementQName.toString());
|
|
1249 |
if(DEBUG_SKIP_ALGORITHM){
|
|
1250 |
if(fAdd){
|
|
1251 |
System.out.println("Elements are being ADDED -- elemet added is = " + fElementQName.rawname + " at count = " + fElementStack.fCount);
|
|
1252 |
}
|
|
1253 |
}
|
|
1254 |
|
|
1255 |
}
|
|
1256 |
|
|
1257 |
//when the elements are being added , we need to check if we are set for skipping the elements
|
|
1258 |
if(fAdd){
|
|
1259 |
//this sets the value of fAdd variable
|
|
1260 |
fElementStack.matchElement(fElementQName);
|
|
1261 |
}
|
|
1262 |
|
|
1263 |
|
|
1264 |
//xxx: We dont need another pointer, fCurrentElement, we can use fElementQName
|
|
1265 |
fCurrentElement = fElementQName;
|
|
1266 |
|
|
1267 |
String rawname = fElementQName.rawname;
|
|
1268 |
|
|
1269 |
fEmptyElement = false;
|
|
1270 |
|
|
1271 |
fAttributes.removeAllAttributes();
|
|
1272 |
|
|
1273 |
if(!seekCloseOfStartTag()){
|
|
1274 |
fReadingAttributes = true;
|
|
1275 |
fAttributeCacheUsedCount =0;
|
|
1276 |
fStringBufferIndex =0;
|
|
1277 |
fAddDefaultAttr = true;
|
|
1278 |
do {
|
|
1279 |
scanAttribute(fAttributes);
|
|
1280 |
if (fSecurityManager != null && fAttributes.getLength() > fElementAttributeLimit){
|
|
1281 |
fErrorReporter.reportError(XMLMessageFormatter.XML_DOMAIN,
|
|
1282 |
"ElementAttributeLimit",
|
|
1283 |
new Object[]{rawname, new Integer(fAttributes.getLength()) },
|
|
1284 |
XMLErrorReporter.SEVERITY_FATAL_ERROR );
|
|
1285 |
}
|
|
1286 |
|
|
1287 |
} while (!seekCloseOfStartTag());
|
|
1288 |
fReadingAttributes=false;
|
|
1289 |
}
|
|
1290 |
|
|
1291 |
if (fEmptyElement) {
|
|
1292 |
//decrease the markup depth..
|
|
1293 |
fMarkupDepth--;
|
|
1294 |
|
|
1295 |
// check that this element was opened in the same entity
|
|
1296 |
if (fMarkupDepth < fEntityStack[fEntityDepth - 1]) {
|
|
1297 |
reportFatalError("ElementEntityMismatch",
|
|
1298 |
new Object[]{fCurrentElement.rawname});
|
|
1299 |
}
|
|
1300 |
// call handler
|
|
1301 |
if (fDocumentHandler != null) {
|
|
1302 |
fDocumentHandler.emptyElement(fElementQName, fAttributes, null);
|
|
1303 |
}
|
|
1304 |
|
|
1305 |
//We should not be popping out the context here in endELement becaause the namespace context is still
|
|
1306 |
//valid when parser is at the endElement state.
|
|
1307 |
//if (fNamespaces) {
|
|
1308 |
// fNamespaceContext.popContext();
|
|
1309 |
//}
|
|
1310 |
|
|
1311 |
//pop the element off the stack..
|
|
1312 |
fElementStack.popElement();
|
|
1313 |
|
|
1314 |
} else {
|
|
1315 |
|
|
1316 |
if(dtdGrammarUtil != null)
|
|
1317 |
dtdGrammarUtil.startElement(fElementQName, fAttributes);
|
|
1318 |
if(fDocumentHandler != null){
|
|
1319 |
//complete element and attributes are traversed in this function so we can send a callback
|
|
1320 |
//here.
|
|
1321 |
//<strong>we shouldn't be sending callback in scanDocument()</strong>
|
|
1322 |
fDocumentHandler.startElement(fElementQName, fAttributes, null);
|
|
1323 |
}
|
|
1324 |
}
|
|
1325 |
|
|
1326 |
|
|
1327 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() + "<<< scanStartElement(): "+fEmptyElement);
|
|
1328 |
return fEmptyElement;
|
|
1329 |
|
|
1330 |
} // scanStartElement():boolean
|
|
1331 |
|
|
1332 |
/**
|
|
1333 |
* Looks for the close of start tag, i.e. if it finds '>' or '/>'
|
|
1334 |
* Characters are consumed.
|
|
1335 |
*/
|
|
1336 |
protected boolean seekCloseOfStartTag() throws IOException, XNIException {
|
|
1337 |
// spaces
|
|
1338 |
boolean sawSpace = fEntityScanner.skipSpaces();
|
|
1339 |
|
|
1340 |
// end tag?
|
|
1341 |
final int c = fEntityScanner.peekChar();
|
|
1342 |
if (c == '>') {
|
|
1343 |
fEntityScanner.scanChar();
|
|
1344 |
return true;
|
|
1345 |
} else if (c == '/') {
|
|
1346 |
fEntityScanner.scanChar();
|
|
1347 |
if (!fEntityScanner.skipChar('>')) {
|
|
1348 |
reportFatalError("ElementUnterminated",
|
|
1349 |
new Object[]{fElementQName.rawname});
|
|
1350 |
}
|
|
1351 |
fEmptyElement = true;
|
|
1352 |
return true;
|
|
1353 |
} else if (!isValidNameStartChar(c) || !sawSpace) {
|
|
1354 |
reportFatalError("ElementUnterminated", new Object[]{fElementQName.rawname});
|
|
1355 |
}
|
|
1356 |
|
|
1357 |
return false;
|
|
1358 |
}
|
|
1359 |
|
|
1360 |
public boolean hasAttributes(){
|
|
1361 |
return fAttributes.getLength() > 0 ? true : false ;
|
|
1362 |
}
|
|
1363 |
|
|
1364 |
|
|
1365 |
/**
|
|
1366 |
* Scans an attribute.
|
|
1367 |
* <p>
|
|
1368 |
* <pre>
|
|
1369 |
* [41] Attribute ::= Name Eq AttValue
|
|
1370 |
* </pre>
|
|
1371 |
* <p>
|
|
1372 |
* <strong>Note:</strong> This method assumes that the next
|
|
1373 |
* character on the stream is the first character of the attribute
|
|
1374 |
* name.
|
|
1375 |
* <p>
|
|
1376 |
* <strong>Note:</strong> This method uses the fAttributeQName and
|
|
1377 |
* fQName variables. The contents of these variables will be
|
|
1378 |
* destroyed.
|
|
1379 |
*
|
|
1380 |
* @param attributes The attributes list for the scanned attribute.
|
|
1381 |
*/
|
|
1382 |
|
|
1383 |
/**
|
|
1384 |
* protected void scanAttribute(AttributeIteratorImpl attributes)
|
|
1385 |
* throws IOException, XNIException {
|
|
1386 |
* if (DEBUG_START_END_ELEMENT) System.out.println(">>> scanAttribute()");
|
|
1387 |
*
|
|
1388 |
*
|
|
1389 |
* // name
|
|
1390 |
* if (fNamespaces) {
|
|
1391 |
* fEntityScanner.scanQName(fAttributeQName);
|
|
1392 |
* }
|
|
1393 |
* else {
|
|
1394 |
* String name = fEntityScanner.scanName();
|
|
1395 |
* fAttributeQName.setValues(null, name, name, null);
|
|
1396 |
* }
|
|
1397 |
*
|
|
1398 |
* // equals
|
|
1399 |
* fEntityScanner.skipSpaces();
|
|
1400 |
* if (!fEntityScanner.skipChar('=')) {
|
|
1401 |
* reportFatalError("EqRequiredInAttribute",
|
|
1402 |
* new Object[]{fAttributeQName.rawname});
|
|
1403 |
* }
|
|
1404 |
* fEntityScanner.skipSpaces();
|
|
1405 |
*
|
|
1406 |
*
|
|
1407 |
* // content
|
|
1408 |
* int oldLen = attributes.getLength();
|
|
1409 |
*/
|
|
1410 |
/**xxx there is one check of duplicate attribute that has been removed.
|
|
1411 |
* attributes.addAttribute(fAttributeQName, XMLSymbols.fCDATASymbol, null);
|
|
1412 |
*
|
|
1413 |
* // WFC: Unique Att Spec
|
|
1414 |
* if (oldLen == attributes.getLength()) {
|
|
1415 |
* reportFatalError("AttributeNotUnique",
|
|
1416 |
* new Object[]{fCurrentElement.rawname,
|
|
1417 |
* fAttributeQName.rawname});
|
|
1418 |
* }
|
|
1419 |
*/
|
|
1420 |
|
|
1421 |
/*
|
|
1422 |
//REVISIT: one more case needs to be included: external PE and standalone is no
|
|
1423 |
boolean isVC = fHasExternalDTD && !fStandalone;
|
|
1424 |
scanAttributeValue(fTempString, fTempString2,
|
|
1425 |
fAttributeQName.rawname, attributes,
|
|
1426 |
oldLen, isVC);
|
|
1427 |
|
|
1428 |
//attributes.setValue(oldLen, fTempString.toString());
|
|
1429 |
//attributes.setNonNormalizedValue(oldLen, fTempString2.toString());
|
|
1430 |
//attributes.setSpecified(oldLen, true);
|
|
1431 |
|
|
1432 |
AttributeImpl attribute = new AttributeImpl(fAttributeQName.prefix,fAttributeQName.localpart,fAttributeQName.uri,fTempString.toString(),fTempString2.toString(),XMLSymbols.fCDATASymbol,true);
|
|
1433 |
fAttributes.addAttribute(attribute);
|
|
1434 |
if (DEBUG_START_END_ELEMENT) System.out.println("<<< scanAttribute()");
|
|
1435 |
} // scanAttribute(XMLAttributes)
|
|
1436 |
|
|
1437 |
*/
|
|
1438 |
|
|
1439 |
/** return the attribute iterator implementation */
|
|
1440 |
public XMLAttributesIteratorImpl getAttributeIterator(){
|
|
1441 |
if(dtdGrammarUtil != null && fAddDefaultAttr){
|
|
1442 |
dtdGrammarUtil.addDTDDefaultAttrs(fElementQName,fAttributes);
|
|
1443 |
fAddDefaultAttr = false;
|
|
1444 |
}
|
|
1445 |
return fAttributes;
|
|
1446 |
}
|
|
1447 |
|
|
1448 |
/** return if standalone is set */
|
|
1449 |
public boolean standaloneSet(){
|
|
1450 |
return fStandaloneSet;
|
|
1451 |
}
|
|
1452 |
/** return if the doucment is standalone */
|
|
1453 |
public boolean isStandAlone(){
|
|
1454 |
return fStandalone ;
|
|
1455 |
}
|
|
1456 |
/**
|
|
1457 |
* Scans an attribute name value pair.
|
|
1458 |
* <p>
|
|
1459 |
* <pre>
|
|
1460 |
* [41] Attribute ::= Name Eq AttValue
|
|
1461 |
* </pre>
|
|
1462 |
* <p>
|
|
1463 |
* <strong>Note:</strong> This method assumes that the next
|
|
1464 |
* character on the stream is the first character of the attribute
|
|
1465 |
* name.
|
|
1466 |
* <p>
|
|
1467 |
* <strong>Note:</strong> This method uses the fAttributeQName and
|
|
1468 |
* fQName variables. The contents of these variables will be
|
|
1469 |
* destroyed.
|
|
1470 |
*
|
|
1471 |
* @param attributes The attributes list for the scanned attribute.
|
|
1472 |
*/
|
|
1473 |
|
|
1474 |
protected void scanAttribute(XMLAttributes attributes)
|
|
1475 |
throws IOException, XNIException {
|
|
1476 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() +">>> scanAttribute()");
|
|
1477 |
|
|
1478 |
// name
|
|
1479 |
if (fNamespaces) {
|
|
1480 |
fEntityScanner.scanQName(fAttributeQName);
|
|
1481 |
} else {
|
|
1482 |
String name = fEntityScanner.scanName();
|
|
1483 |
fAttributeQName.setValues(null, name, name, null);
|
|
1484 |
}
|
|
1485 |
|
|
1486 |
// equals
|
|
1487 |
fEntityScanner.skipSpaces();
|
|
1488 |
if (!fEntityScanner.skipChar('=')) {
|
|
1489 |
reportFatalError("EqRequiredInAttribute",
|
|
1490 |
new Object[] {fCurrentElement.rawname, fAttributeQName.rawname});
|
|
1491 |
}
|
|
1492 |
fEntityScanner.skipSpaces();
|
|
1493 |
|
|
1494 |
int attIndex = 0 ;
|
|
1495 |
//REVISIT: one more case needs to be included: external PE and standalone is no
|
|
1496 |
boolean isVC = fHasExternalDTD && !fStandalone;
|
|
1497 |
//fTempString would store attribute value
|
|
1498 |
///fTempString2 would store attribute non-normalized value
|
|
1499 |
|
|
1500 |
//this function doesn't use 'attIndex'. We are adding the attribute later
|
|
1501 |
//after we have figured out that current attribute is not namespace declaration
|
|
1502 |
//since scanAttributeValue doesn't use attIndex parameter therefore we
|
|
1503 |
//can safely add the attribute later..
|
|
1504 |
XMLString tmpStr = getString();
|
|
1505 |
|
|
1506 |
scanAttributeValue(tmpStr, fTempString2,
|
|
1507 |
fAttributeQName.rawname, attributes,
|
|
1508 |
attIndex, isVC);
|
|
1509 |
|
|
1510 |
// content
|
|
1511 |
int oldLen = attributes.getLength();
|
|
1512 |
//if the attribute name already exists.. new value is replaced with old value
|
|
1513 |
attIndex = attributes.addAttribute(fAttributeQName, XMLSymbols.fCDATASymbol, null);
|
|
1514 |
|
|
1515 |
// WFC: Unique Att Spec
|
|
1516 |
//attributes count will be same if the current attribute name already exists for this element name.
|
|
1517 |
//this means there are two duplicate attributes.
|
|
1518 |
if (oldLen == attributes.getLength()) {
|
|
1519 |
reportFatalError("AttributeNotUnique",
|
|
1520 |
new Object[]{fCurrentElement.rawname,
|
|
1521 |
fAttributeQName.rawname});
|
|
1522 |
}
|
|
1523 |
|
|
1524 |
//tmpString contains attribute value
|
|
1525 |
//we are passing null as the attribute value
|
|
1526 |
attributes.setValue(attIndex, null, tmpStr);
|
|
1527 |
|
|
1528 |
///xxx: nonNormalizedValue is not being set as it is not required by SAX & DOM
|
|
1529 |
//attributes.setNonNormalizedValue(oldLen, fTempString2.toString());
|
|
1530 |
attributes.setSpecified(attIndex, true);
|
|
1531 |
|
|
1532 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() +"<<< scanAttribute()");
|
|
1533 |
|
|
1534 |
} // scanAttribute(XMLAttributes)
|
|
1535 |
|
|
1536 |
/**
|
|
1537 |
* Scans element content.
|
|
1538 |
*
|
|
1539 |
* @return Returns the next character on the stream.
|
|
1540 |
*/
|
|
1541 |
//CHANGED:
|
|
1542 |
//EARLIER: scanContent()
|
|
1543 |
//NOW: scanContent(XMLStringBuffer)
|
|
1544 |
//It makes things easy if this functions takes XMLStringBuffer as parameter..
|
|
1545 |
//this function appends the data to the buffer.
|
|
1546 |
protected int scanContent(XMLStringBuffer content) throws IOException, XNIException {
|
|
1547 |
//set the fTempString length to 0 before passing it on to scanContent
|
|
1548 |
//scanContent sets the correct co-ordinates as per the content read
|
|
1549 |
fTempString.length = 0;
|
|
1550 |
int c = fEntityScanner.scanContent(fTempString);
|
|
1551 |
content.append(fTempString);
|
|
1552 |
fTempString.length = 0;
|
|
1553 |
if (c == '\r') {
|
|
1554 |
// happens when there is the character reference
|
|
1555 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry
|
|
1556 |
fEntityScanner.scanChar();
|
|
1557 |
content.append((char)c);
|
|
1558 |
c = -1;
|
|
1559 |
} else if (c == ']') {
|
|
1560 |
//fStringBuffer.clear();
|
|
1561 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry
|
|
1562 |
content.append((char)fEntityScanner.scanChar());
|
|
1563 |
// remember where we are in case we get an endEntity before we
|
|
1564 |
// could flush the buffer out - this happens when we're parsing an
|
|
1565 |
// entity which ends with a ]
|
|
1566 |
fInScanContent = true;
|
|
1567 |
//
|
|
1568 |
// We work on a single character basis to handle cases such as:
|
|
1569 |
// ']]]>' which we might otherwise miss.
|
|
1570 |
//
|
|
1571 |
if (fEntityScanner.skipChar(']')) {
|
|
1572 |
content.append(']');
|
|
1573 |
while (fEntityScanner.skipChar(']')) {
|
|
1574 |
content.append(']');
|
|
1575 |
}
|
|
1576 |
if (fEntityScanner.skipChar('>')) {
|
|
1577 |
reportFatalError("CDEndInContent", null);
|
|
1578 |
}
|
|
1579 |
}
|
|
1580 |
fInScanContent = false;
|
|
1581 |
c = -1;
|
|
1582 |
}
|
|
1583 |
if (fDocumentHandler != null && content.length > 0) {
|
|
1584 |
//fDocumentHandler.characters(content, null);
|
|
1585 |
}
|
|
1586 |
return c;
|
|
1587 |
|
|
1588 |
} // scanContent():int
|
|
1589 |
|
|
1590 |
|
|
1591 |
/**
|
|
1592 |
* Scans a CDATA section.
|
|
1593 |
* <p>
|
|
1594 |
* <strong>Note:</strong> This method uses the fTempString and
|
|
1595 |
* fStringBuffer variables.
|
|
1596 |
*
|
|
1597 |
* @param complete True if the CDATA section is to be scanned
|
|
1598 |
* completely.
|
|
1599 |
*
|
|
1600 |
* @return True if CDATA is completely scanned.
|
|
1601 |
*/
|
|
1602 |
//CHANGED:
|
|
1603 |
protected boolean scanCDATASection(XMLStringBuffer contentBuffer, boolean complete)
|
|
1604 |
throws IOException, XNIException {
|
|
1605 |
|
|
1606 |
// call handler
|
|
1607 |
if (fDocumentHandler != null) {
|
|
1608 |
//fDocumentHandler.startCDATA(null);
|
|
1609 |
}
|
|
1610 |
|
|
1611 |
while (true) {
|
|
1612 |
//scanData will fill the contentBuffer
|
|
1613 |
if (!fEntityScanner.scanData("]]>", contentBuffer)) {
|
|
1614 |
break ;
|
|
1615 |
/** We dont need all this code if we pass ']]>' as delimeter..
|
|
1616 |
* int brackets = 2;
|
|
1617 |
* while (fEntityScanner.skipChar(']')) {
|
|
1618 |
* brackets++;
|
|
1619 |
* }
|
|
1620 |
*
|
|
1621 |
* //When we find more than 2 square brackets
|
|
1622 |
* if (fDocumentHandler != null && brackets > 2) {
|
|
1623 |
* //we dont need to clear the buffer..
|
|
1624 |
* //contentBuffer.clear();
|
|
1625 |
* for (int i = 2; i < brackets; i++) {
|
|
1626 |
* contentBuffer.append(']');
|
|
1627 |
* }
|
|
1628 |
* fDocumentHandler.characters(contentBuffer, null);
|
|
1629 |
* }
|
|
1630 |
*
|
|
1631 |
* if (fEntityScanner.skipChar('>')) {
|
|
1632 |
* break;
|
|
1633 |
* }
|
|
1634 |
* if (fDocumentHandler != null) {
|
|
1635 |
* //we dont need to clear the buffer now..
|
|
1636 |
* //contentBuffer.clear();
|
|
1637 |
* contentBuffer.append("]]");
|
|
1638 |
* fDocumentHandler.characters(contentBuffer, null);
|
|
1639 |
* }
|
|
1640 |
**/
|
|
1641 |
} else {
|
|
1642 |
int c = fEntityScanner.peekChar();
|
|
1643 |
if (c != -1 && isInvalidLiteral(c)) {
|
|
1644 |
if (XMLChar.isHighSurrogate(c)) {
|
|
1645 |
//contentBuffer.clear();
|
|
1646 |
//scan surrogates if any....
|
|
1647 |
scanSurrogates(contentBuffer);
|
|
1648 |
} else {
|
|
1649 |
reportFatalError("InvalidCharInCDSect",
|
|
1650 |
new Object[]{Integer.toString(c,16)});
|
|
1651 |
fEntityScanner.scanChar();
|
|
1652 |
}
|
|
1653 |
}
|
|
1654 |
//by this time we have also read surrogate contents if any...
|
|
1655 |
if (fDocumentHandler != null) {
|
|
1656 |
//fDocumentHandler.characters(contentBuffer, null);
|
|
1657 |
}
|
|
1658 |
}
|
|
1659 |
}
|
|
1660 |
fMarkupDepth--;
|
|
1661 |
|
|
1662 |
if (fDocumentHandler != null && contentBuffer.length > 0) {
|
|
1663 |
//fDocumentHandler.characters(contentBuffer, null);
|
|
1664 |
}
|
|
1665 |
|
|
1666 |
// call handler
|
|
1667 |
if (fDocumentHandler != null) {
|
|
1668 |
//fDocumentHandler.endCDATA(null);
|
|
1669 |
}
|
|
1670 |
|
|
1671 |
return true;
|
|
1672 |
|
|
1673 |
} // scanCDATASection(XMLStringBuffer, boolean):boolean
|
|
1674 |
|
|
1675 |
/**
|
|
1676 |
* Scans an end element.
|
|
1677 |
* <p>
|
|
1678 |
* <pre>
|
|
1679 |
* [42] ETag ::= '</' Name S? '>'
|
|
1680 |
* </pre>
|
|
1681 |
* <p>
|
|
1682 |
* <strong>Note:</strong> This method uses the fElementQName variable.
|
|
1683 |
* The contents of this variable will be destroyed. The caller should
|
|
1684 |
* copy the needed information out of this variable before calling
|
|
1685 |
* this method.
|
|
1686 |
*
|
|
1687 |
* @return The element depth.
|
|
1688 |
*/
|
|
1689 |
protected int scanEndElement() throws IOException, XNIException {
|
|
1690 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() +">>> scanEndElement()");
|
|
1691 |
|
|
1692 |
// pop context
|
|
1693 |
QName endElementName = fElementStack.popElement();
|
|
1694 |
|
|
1695 |
String rawname = endElementName.rawname;
|
|
1696 |
if(DEBUG)System.out.println("endElementName = " + endElementName.toString());
|
|
1697 |
// Take advantage of the fact that next string _should_ be "fElementQName.rawName",
|
|
1698 |
//In scanners most of the time is consumed on checks done for XML characters, we can
|
|
1699 |
// optimize on it and avoid the checks done for endElement,
|
|
1700 |
//we will also avoid symbol table lookup - neeraj.bajaj@sun.com
|
|
1701 |
|
|
1702 |
// this should work both for namespace processing true or false...
|
|
1703 |
|
|
1704 |
//REVISIT: if the string is not the same as expected.. we need to do better error handling..
|
|
1705 |
//We can skip this for now... In any case if the string doesn't match -- document is not well formed.
|
|
1706 |
|
|
1707 |
if (!fEntityScanner.skipString(endElementName.rawname)) {
|
|
1708 |
reportFatalError("ETagRequired", new Object[]{rawname});
|
|
1709 |
}
|
|
1710 |
|
|
1711 |
// end
|
|
1712 |
fEntityScanner.skipSpaces();
|
|
1713 |
if (!fEntityScanner.skipChar('>')) {
|
|
1714 |
reportFatalError("ETagUnterminated",
|
|
1715 |
new Object[]{rawname});
|
|
1716 |
}
|
|
1717 |
fMarkupDepth--;
|
|
1718 |
|
|
1719 |
//we have increased the depth for two markup "<" characters
|
|
1720 |
fMarkupDepth--;
|
|
1721 |
|
|
1722 |
// check that this element was opened in the same entity
|
|
1723 |
if (fMarkupDepth < fEntityStack[fEntityDepth - 1]) {
|
|
1724 |
reportFatalError("ElementEntityMismatch",
|
|
1725 |
new Object[]{rawname});
|
|
1726 |
}
|
|
1727 |
|
|
1728 |
//We should not be popping out the context here in endELement becaause the namespace context is still
|
|
1729 |
//valid when parser is at the endElement state.
|
|
1730 |
|
|
1731 |
//if (fNamespaces) {
|
|
1732 |
// fNamespaceContext.popContext();
|
|
1733 |
//}
|
|
1734 |
|
|
1735 |
// call handler
|
|
1736 |
if (fDocumentHandler != null ) {
|
|
1737 |
//end element is scanned in this function so we can send a callback
|
|
1738 |
//here.
|
|
1739 |
//<strong>we shouldn't be sending callback in scanDocument()</strong>
|
|
1740 |
|
|
1741 |
fDocumentHandler.endElement(endElementName, null);
|
|
1742 |
}
|
|
1743 |
if(dtdGrammarUtil != null)
|
|
1744 |
dtdGrammarUtil.endElement(endElementName);
|
|
1745 |
|
|
1746 |
return fMarkupDepth;
|
|
1747 |
|
|
1748 |
} // scanEndElement():int
|
|
1749 |
|
|
1750 |
/**
|
|
1751 |
* Scans a character reference.
|
|
1752 |
* <p>
|
|
1753 |
* <pre>
|
|
1754 |
* [66] CharRef ::= '&#' [0-9]+ ';' | '&#x' [0-9a-fA-F]+ ';'
|
|
1755 |
* </pre>
|
|
1756 |
*/
|
|
1757 |
protected void scanCharReference()
|
|
1758 |
throws IOException, XNIException {
|
|
1759 |
|
|
1760 |
fStringBuffer2.clear();
|
|
1761 |
int ch = scanCharReferenceValue(fStringBuffer2, null);
|
|
1762 |
fMarkupDepth--;
|
|
1763 |
if (ch != -1) {
|
|
1764 |
// call handler
|
|
1765 |
|
|
1766 |
if (fDocumentHandler != null) {
|
|
1767 |
if (fNotifyCharRefs) {
|
|
1768 |
fDocumentHandler.startGeneralEntity(fCharRefLiteral, null, null, null);
|
|
1769 |
}
|
|
1770 |
Augmentations augs = null;
|
|
1771 |
if (fValidation && ch <= 0x20) {
|
|
1772 |
if (fTempAugmentations != null) {
|
|
1773 |
fTempAugmentations.removeAllItems();
|
|
1774 |
}
|
|
1775 |
else {
|
|
1776 |
fTempAugmentations = new AugmentationsImpl();
|
|
1777 |
}
|
|
1778 |
augs = fTempAugmentations;
|
|
1779 |
augs.putItem(Constants.CHAR_REF_PROBABLE_WS, Boolean.TRUE);
|
|
1780 |
}
|
|
1781 |
//xxx: How do we deal with this - how to return charReferenceValues
|
|
1782 |
//now this is being commented because this is taken care in scanDocument()
|
|
1783 |
//fDocumentHandler.characters(fStringBuffer2, null);
|
|
1784 |
if (fNotifyCharRefs) {
|
|
1785 |
fDocumentHandler.endGeneralEntity(fCharRefLiteral, null);
|
|
1786 |
}
|
|
1787 |
}
|
|
1788 |
}
|
|
1789 |
|
|
1790 |
} // scanCharReference()
|
|
1791 |
|
|
1792 |
|
|
1793 |
/**
|
|
1794 |
* Scans an entity reference.
|
|
1795 |
*
|
|
1796 |
* @return returns true if the new entity is started. If it was built-in entity
|
|
1797 |
* 'false' is returned.
|
|
1798 |
* @throws IOException Thrown if i/o error occurs.
|
|
1799 |
* @throws XNIException Thrown if handler throws exception upon
|
|
1800 |
* notification.
|
|
1801 |
*/
|
|
1802 |
protected void scanEntityReference(XMLStringBuffer content) throws IOException, XNIException {
|
|
1803 |
String name = fEntityScanner.scanName();
|
|
1804 |
if (name == null) {
|
|
1805 |
reportFatalError("NameRequiredInReference", null);
|
12458
|
1806 |
return;
|
12005
|
1807 |
}
|
|
1808 |
if (!fEntityScanner.skipChar(';')) {
|
|
1809 |
reportFatalError("SemicolonRequiredInReference", new Object []{name});
|
|
1810 |
}
|
|
1811 |
if (fEntityStore.isUnparsedEntity(name)) {
|
|
1812 |
reportFatalError("ReferenceToUnparsedEntity", new Object[]{name});
|
|
1813 |
}
|
|
1814 |
fMarkupDepth--;
|
|
1815 |
fCurrentEntityName = name;
|
|
1816 |
|
|
1817 |
// handle built-in entities
|
|
1818 |
if (name == fAmpSymbol) {
|
|
1819 |
handleCharacter('&', fAmpSymbol, content);
|
|
1820 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS;
|
|
1821 |
return ;
|
|
1822 |
} else if (name == fLtSymbol) {
|
|
1823 |
handleCharacter('<', fLtSymbol, content);
|
|
1824 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS;
|
|
1825 |
return ;
|
|
1826 |
} else if (name == fGtSymbol) {
|
|
1827 |
handleCharacter('>', fGtSymbol, content);
|
|
1828 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS;
|
|
1829 |
return ;
|
|
1830 |
} else if (name == fQuotSymbol) {
|
|
1831 |
handleCharacter('"', fQuotSymbol, content);
|
|
1832 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS;
|
|
1833 |
return ;
|
|
1834 |
} else if (name == fAposSymbol) {
|
|
1835 |
handleCharacter('\'', fAposSymbol, content);
|
|
1836 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS;
|
|
1837 |
return ;
|
|
1838 |
}
|
|
1839 |
|
|
1840 |
//1. if the entity is external and support to external entities is not required
|
|
1841 |
// 2. or entities should not be replaced
|
|
1842 |
//3. or if it is built in entity reference.
|
|
1843 |
if((fEntityStore.isExternalEntity(name) && !fSupportExternalEntities) || (!fEntityStore.isExternalEntity(name) && !fReplaceEntityReferences) || foundBuiltInRefs){
|
|
1844 |
fScannerState = SCANNER_STATE_REFERENCE;
|
|
1845 |
return ;
|
|
1846 |
}
|
|
1847 |
// start general entity
|
|
1848 |
if (!fEntityStore.isDeclaredEntity(name)) {
|
|
1849 |
//SUPPORT_DTD=false && ReplaceEntityReferences should throw exception
|
|
1850 |
if (fDisallowDoctype && fReplaceEntityReferences) {
|
|
1851 |
reportFatalError("EntityNotDeclared", new Object[]{name});
|
|
1852 |
return;
|
|
1853 |
}
|
|
1854 |
//REVISIT: one more case needs to be included: external PE and standalone is no
|
|
1855 |
if ( fHasExternalDTD && !fStandalone) {
|
|
1856 |
if (fValidation)
|
|
1857 |
fErrorReporter.reportError(fEntityScanner, XMLMessageFormatter.XML_DOMAIN,"EntityNotDeclared",
|
|
1858 |
new Object[]{name}, XMLErrorReporter.SEVERITY_ERROR);
|
|
1859 |
} else
|
|
1860 |
reportFatalError("EntityNotDeclared", new Object[]{name});
|
|
1861 |
}
|
|
1862 |
//we are starting the entity even if the entity was not declared
|
|
1863 |
//if that was the case it its taken care in XMLEntityManager.startEntity()
|
|
1864 |
//we immediately call the endEntity. Application gets to know if there was
|
|
1865 |
//any entity that was not declared.
|
|
1866 |
fEntityManager.startEntity(name, false);
|
|
1867 |
//set the scaner state to content.. parser will automatically revive itself at any point of time.
|
|
1868 |
//setScannerState(SCANNER_STATE_CONTENT);
|
|
1869 |
//return true ;
|
|
1870 |
} // scanEntityReference()
|
|
1871 |
|
|
1872 |
// utility methods
|
|
1873 |
|
|
1874 |
/**
|
|
1875 |
* Calls document handler with a single character resulting from
|
|
1876 |
* built-in entity resolution.
|
|
1877 |
*
|
|
1878 |
* @param c
|
|
1879 |
* @param entity built-in name
|
|
1880 |
* @param XMLStringBuffer append the character to buffer
|
|
1881 |
*
|
|
1882 |
* we really dont need to call this function -- this function is only required when
|
|
1883 |
* we integrate with rest of Xerces2. SO maintaining the current behavior and still
|
|
1884 |
* calling this function to hanlde built-in entity reference.
|
|
1885 |
*
|
|
1886 |
*/
|
|
1887 |
private void handleCharacter(char c, String entity, XMLStringBuffer content) throws XNIException {
|
|
1888 |
foundBuiltInRefs = true;
|
|
1889 |
content.append(c);
|
|
1890 |
if (fDocumentHandler != null) {
|
|
1891 |
fSingleChar[0] = c;
|
|
1892 |
if (fNotifyBuiltInRefs) {
|
|
1893 |
fDocumentHandler.startGeneralEntity(entity, null, null, null);
|
|
1894 |
}
|
|
1895 |
fTempString.setValues(fSingleChar, 0, 1);
|
|
1896 |
//fDocumentHandler.characters(fTempString, null);
|
|
1897 |
|
|
1898 |
if (fNotifyBuiltInRefs) {
|
|
1899 |
fDocumentHandler.endGeneralEntity(entity, null);
|
|
1900 |
}
|
|
1901 |
}
|
|
1902 |
} // handleCharacter(char)
|
|
1903 |
|
|
1904 |
// helper methods
|
|
1905 |
|
|
1906 |
/**
|
|
1907 |
* Sets the scanner state.
|
|
1908 |
*
|
|
1909 |
* @param state The new scanner state.
|
|
1910 |
*/
|
|
1911 |
protected final void setScannerState(int state) {
|
|
1912 |
|
|
1913 |
fScannerState = state;
|
|
1914 |
if (DEBUG_SCANNER_STATE) {
|
|
1915 |
System.out.print("### setScannerState: ");
|
|
1916 |
//System.out.print(fScannerState);
|
|
1917 |
System.out.print(getScannerStateName(state));
|
|
1918 |
System.out.println();
|
|
1919 |
}
|
|
1920 |
|
|
1921 |
} // setScannerState(int)
|
|
1922 |
|
|
1923 |
|
|
1924 |
/**
|
|
1925 |
* Sets the Driver.
|
|
1926 |
*
|
|
1927 |
* @param Driver The new Driver.
|
|
1928 |
*/
|
|
1929 |
protected final void setDriver(Driver driver) {
|
|
1930 |
fDriver = driver;
|
|
1931 |
if (DEBUG_DISPATCHER) {
|
|
1932 |
System.out.print("%%% setDriver: ");
|
|
1933 |
System.out.print(getDriverName(driver));
|
|
1934 |
System.out.println();
|
|
1935 |
}
|
|
1936 |
}
|
|
1937 |
|
|
1938 |
//
|
|
1939 |
// Private methods
|
|
1940 |
//
|
|
1941 |
|
|
1942 |
/** Returns the scanner state name. */
|
|
1943 |
protected String getScannerStateName(int state) {
|
|
1944 |
|
|
1945 |
switch (state) {
|
|
1946 |
case SCANNER_STATE_DOCTYPE: return "SCANNER_STATE_DOCTYPE";
|
|
1947 |
case SCANNER_STATE_ROOT_ELEMENT: return "SCANNER_STATE_ROOT_ELEMENT";
|
|
1948 |
case SCANNER_STATE_START_OF_MARKUP: return "SCANNER_STATE_START_OF_MARKUP";
|
|
1949 |
case SCANNER_STATE_COMMENT: return "SCANNER_STATE_COMMENT";
|
|
1950 |
case SCANNER_STATE_PI: return "SCANNER_STATE_PI";
|
|
1951 |
case SCANNER_STATE_CONTENT: return "SCANNER_STATE_CONTENT";
|
|
1952 |
case SCANNER_STATE_REFERENCE: return "SCANNER_STATE_REFERENCE";
|
|
1953 |
case SCANNER_STATE_END_OF_INPUT: return "SCANNER_STATE_END_OF_INPUT";
|
|
1954 |
case SCANNER_STATE_TERMINATED: return "SCANNER_STATE_TERMINATED";
|
|
1955 |
case SCANNER_STATE_CDATA: return "SCANNER_STATE_CDATA";
|
|
1956 |
case SCANNER_STATE_TEXT_DECL: return "SCANNER_STATE_TEXT_DECL";
|
|
1957 |
case SCANNER_STATE_ATTRIBUTE: return "SCANNER_STATE_ATTRIBUTE";
|
|
1958 |
case SCANNER_STATE_ATTRIBUTE_VALUE: return "SCANNER_STATE_ATTRIBUTE_VALUE";
|
|
1959 |
case SCANNER_STATE_START_ELEMENT_TAG: return "SCANNER_STATE_START_ELEMENT_TAG";
|
|
1960 |
case SCANNER_STATE_END_ELEMENT_TAG: return "SCANNER_STATE_END_ELEMENT_TAG";
|
|
1961 |
case SCANNER_STATE_CHARACTER_DATA: return "SCANNER_STATE_CHARACTER_DATA" ;
|
|
1962 |
}
|
|
1963 |
|
|
1964 |
return "??? ("+state+')';
|
|
1965 |
|
|
1966 |
} // getScannerStateName(int):String
|
|
1967 |
public String getEntityName(){
|
|
1968 |
//return the cached name
|
|
1969 |
return fCurrentEntityName;
|
|
1970 |
}
|
|
1971 |
|
|
1972 |
/** Returns the driver name. */
|
|
1973 |
public String getDriverName(Driver driver) {
|
|
1974 |
|
|
1975 |
if (DEBUG_DISPATCHER) {
|
|
1976 |
if (driver != null) {
|
|
1977 |
String name = driver.getClass().getName();
|
|
1978 |
int index = name.lastIndexOf('.');
|
|
1979 |
if (index != -1) {
|
|
1980 |
name = name.substring(index + 1);
|
|
1981 |
index = name.lastIndexOf('$');
|
|
1982 |
if (index != -1) {
|
|
1983 |
name = name.substring(index + 1);
|
|
1984 |
}
|
|
1985 |
}
|
|
1986 |
return name;
|
|
1987 |
}
|
|
1988 |
}
|
|
1989 |
return "null";
|
|
1990 |
|
|
1991 |
} // getDriverName():String
|
|
1992 |
|
|
1993 |
//
|
|
1994 |
// Classes
|
|
1995 |
//
|
|
1996 |
|
|
1997 |
/**
|
|
1998 |
* @author Neeraj Bajaj, Sun Microsystems.
|
|
1999 |
*/
|
|
2000 |
protected static final class Element {
|
|
2001 |
|
|
2002 |
//
|
|
2003 |
// Data
|
|
2004 |
//
|
|
2005 |
|
|
2006 |
/** Symbol. */
|
|
2007 |
public QName qname;
|
|
2008 |
|
|
2009 |
//raw name stored as characters
|
|
2010 |
public char[] fRawname;
|
|
2011 |
|
|
2012 |
/** The next Element entry. */
|
|
2013 |
public Element next;
|
|
2014 |
|
|
2015 |
//
|
|
2016 |
// Constructors
|
|
2017 |
//
|
|
2018 |
|
|
2019 |
/**
|
|
2020 |
* Constructs a new Element from the given QName and next Element
|
|
2021 |
* reference.
|
|
2022 |
*/
|
|
2023 |
public Element(QName qname, Element next) {
|
|
2024 |
this.qname.setValues(qname);
|
|
2025 |
this.fRawname = qname.rawname.toCharArray();
|
|
2026 |
this.next = next;
|
|
2027 |
}
|
|
2028 |
|
|
2029 |
} // class Element
|
|
2030 |
|
|
2031 |
/**
|
|
2032 |
* Element stack.
|
|
2033 |
*
|
|
2034 |
* @author Neeraj Bajaj, Sun Microsystems.
|
|
2035 |
*/
|
|
2036 |
protected class ElementStack2 {
|
|
2037 |
|
|
2038 |
//
|
|
2039 |
// Data
|
|
2040 |
//
|
|
2041 |
|
|
2042 |
/** The stack data. */
|
|
2043 |
protected QName [] fQName = new QName[20];
|
|
2044 |
|
|
2045 |
//Element depth
|
|
2046 |
protected int fDepth;
|
|
2047 |
//total number of elements
|
|
2048 |
protected int fCount;
|
|
2049 |
//current position
|
|
2050 |
protected int fPosition;
|
|
2051 |
//Mark refers to the position
|
|
2052 |
protected int fMark;
|
|
2053 |
|
|
2054 |
protected int fLastDepth ;
|
|
2055 |
|
|
2056 |
//
|
|
2057 |
// Constructors
|
|
2058 |
//
|
|
2059 |
|
|
2060 |
/** Default constructor. */
|
|
2061 |
public ElementStack2() {
|
|
2062 |
for (int i = 0; i < fQName.length; i++) {
|
|
2063 |
fQName[i] = new QName();
|
|
2064 |
}
|
|
2065 |
fMark = fPosition = 1;
|
|
2066 |
} // <init>()
|
|
2067 |
|
|
2068 |
public void resize(){
|
|
2069 |
/**
|
|
2070 |
* int length = fElements.length;
|
|
2071 |
* Element [] temp = new Element[length * 2];
|
|
2072 |
* System.arraycopy(fElements, 0, temp, 0, length);
|
|
2073 |
* fElements = temp;
|
|
2074 |
*/
|
|
2075 |
//resize QNames
|
|
2076 |
int oldLength = fQName.length;
|
|
2077 |
QName [] tmp = new QName[oldLength * 2];
|
|
2078 |
System.arraycopy(fQName, 0, tmp, 0, oldLength);
|
|
2079 |
fQName = tmp;
|
|
2080 |
|
|
2081 |
for (int i = oldLength; i < fQName.length; i++) {
|
|
2082 |
fQName[i] = new QName();
|
|
2083 |
}
|
|
2084 |
|
|
2085 |
}
|
|
2086 |
|
|
2087 |
|
|
2088 |
//
|
|
2089 |
// Public methods
|
|
2090 |
//
|
|
2091 |
|
|
2092 |
/** Check if the element scanned during the start element
|
|
2093 |
*matches the stored element.
|
|
2094 |
*
|
|
2095 |
*@return true if the match suceeds.
|
|
2096 |
*/
|
|
2097 |
public boolean matchElement(QName element) {
|
|
2098 |
//last depth is the depth when last elemnt was pushed
|
|
2099 |
//if last depth is greater than current depth
|
|
2100 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2101 |
System.out.println("fLastDepth = " + fLastDepth);
|
|
2102 |
System.out.println("fDepth = " + fDepth);
|
|
2103 |
}
|
|
2104 |
boolean match = false;
|
|
2105 |
if(fLastDepth > fDepth && fDepth <= 2){
|
|
2106 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2107 |
System.out.println("Checking if the elements match " + element.rawname + " , " + fQName[fDepth].rawname);
|
|
2108 |
}
|
|
2109 |
if(element.rawname == fQName[fDepth].rawname){
|
|
2110 |
fAdd = false;
|
|
2111 |
//mark this position
|
|
2112 |
//decrease the depth by 1 as arrays are 0 based
|
|
2113 |
fMark = fDepth - 1;
|
|
2114 |
//we found the match and from next element skipping will start, add 1
|
|
2115 |
fPosition = fMark + 1 ;
|
|
2116 |
match = true;
|
|
2117 |
//Once we get match decrease the count -- this was increased by nextElement()
|
|
2118 |
--fCount;
|
|
2119 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2120 |
System.out.println("fAdd FALSE -- NOW ELEMENT SHOULD NOT BE ADDED");
|
|
2121 |
System.out.println("fMark = " + fMark);
|
|
2122 |
System.out.println("fPosition = " + fPosition);
|
|
2123 |
System.out.println("fDepth = " + fDepth);
|
|
2124 |
System.out.println("fCount = " + fCount);
|
|
2125 |
}
|
|
2126 |
}else{
|
|
2127 |
fAdd = true;
|
|
2128 |
if(DEBUG_SKIP_ALGORITHM)System.out.println("fAdd is " + fAdd);
|
|
2129 |
}
|
|
2130 |
}
|
|
2131 |
//store the last depth
|
|
2132 |
fLastDepth = fDepth++;
|
|
2133 |
return match;
|
|
2134 |
} // pushElement(QName):QName
|
|
2135 |
|
|
2136 |
/**
|
|
2137 |
* This function doesn't increase depth. The function in this function is
|
|
2138 |
*broken down into two functions for efficiency. <@see>matchElement</see>.
|
|
2139 |
* This function just returns the pointer to the object and its values are set.
|
|
2140 |
*
|
|
2141 |
*@return QName reference to the next element in the list
|
|
2142 |
*/
|
|
2143 |
public QName nextElement() {
|
|
2144 |
|
|
2145 |
//if number of elements becomes equal to the length of array -- stop the skipping
|
|
2146 |
if (fCount == fQName.length) {
|
|
2147 |
fShouldSkip = false;
|
|
2148 |
fAdd = false;
|
|
2149 |
if(DEBUG_SKIP_ALGORITHM)System.out.println("SKIPPING STOPPED, fShouldSkip = " + fShouldSkip);
|
|
2150 |
//xxx: this is not correct, we are returning the last element
|
|
2151 |
//this wont make any difference since flag has been set to 'false'
|
|
2152 |
return fQName[--fCount];
|
|
2153 |
}
|
|
2154 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2155 |
System.out.println("fCount = " + fCount);
|
|
2156 |
}
|
|
2157 |
return fQName[fCount++];
|
|
2158 |
|
|
2159 |
}
|
|
2160 |
|
|
2161 |
/** Note that this function is considerably different than nextElement()
|
|
2162 |
* This function just returns the previously stored elements
|
|
2163 |
*/
|
|
2164 |
public QName getNext(){
|
|
2165 |
//when position reaches number of elements in the list..
|
|
2166 |
//set the position back to mark, making it a circular linked list.
|
|
2167 |
if(fPosition == fCount){
|
|
2168 |
fPosition = fMark;
|
|
2169 |
}
|
|
2170 |
return fQName[fPosition++];
|
|
2171 |
}
|
|
2172 |
|
|
2173 |
/** returns the current depth
|
|
2174 |
*/
|
|
2175 |
public int popElement(){
|
|
2176 |
return fDepth--;
|
|
2177 |
}
|
|
2178 |
|
|
2179 |
|
|
2180 |
/** Clears the stack without throwing away existing QName objects. */
|
|
2181 |
public void clear() {
|
|
2182 |
fLastDepth = 0;
|
|
2183 |
fDepth = 0;
|
|
2184 |
fCount = 0 ;
|
|
2185 |
fPosition = fMark = 1;
|
|
2186 |
} // clear()
|
|
2187 |
|
|
2188 |
} // class ElementStack
|
|
2189 |
|
|
2190 |
/**
|
|
2191 |
* Element stack. This stack operates without synchronization, error
|
|
2192 |
* checking, and it re-uses objects instead of throwing popped items
|
|
2193 |
* away.
|
|
2194 |
*
|
|
2195 |
* @author Andy Clark, IBM
|
|
2196 |
*/
|
|
2197 |
protected class ElementStack {
|
|
2198 |
|
|
2199 |
//
|
|
2200 |
// Data
|
|
2201 |
//
|
|
2202 |
|
|
2203 |
/** The stack data. */
|
|
2204 |
protected QName[] fElements;
|
|
2205 |
protected int [] fInt = new int[20];
|
|
2206 |
|
|
2207 |
|
|
2208 |
//Element depth
|
|
2209 |
protected int fDepth;
|
|
2210 |
//total number of elements
|
|
2211 |
protected int fCount;
|
|
2212 |
//current position
|
|
2213 |
protected int fPosition;
|
|
2214 |
//Mark refers to the position
|
|
2215 |
protected int fMark;
|
|
2216 |
|
|
2217 |
protected int fLastDepth ;
|
|
2218 |
|
|
2219 |
//
|
|
2220 |
// Constructors
|
|
2221 |
//
|
|
2222 |
|
|
2223 |
/** Default constructor. */
|
|
2224 |
public ElementStack() {
|
|
2225 |
fElements = new QName[20];
|
|
2226 |
for (int i = 0; i < fElements.length; i++) {
|
|
2227 |
fElements[i] = new QName();
|
|
2228 |
}
|
|
2229 |
} // <init>()
|
|
2230 |
|
|
2231 |
//
|
|
2232 |
// Public methods
|
|
2233 |
//
|
|
2234 |
|
|
2235 |
/**
|
|
2236 |
* Pushes an element on the stack.
|
|
2237 |
* <p>
|
|
2238 |
* <strong>Note:</strong> The QName values are copied into the
|
|
2239 |
* stack. In other words, the caller does <em>not</em> orphan
|
|
2240 |
* the element to the stack. Also, the QName object returned
|
|
2241 |
* is <em>not</em> orphaned to the caller. It should be
|
|
2242 |
* considered read-only.
|
|
2243 |
*
|
|
2244 |
* @param element The element to push onto the stack.
|
|
2245 |
*
|
|
2246 |
* @return Returns the actual QName object that stores the
|
|
2247 |
*/
|
|
2248 |
//XXX: THIS FUNCTION IS NOT USED
|
|
2249 |
public QName pushElement(QName element) {
|
|
2250 |
if (fDepth == fElements.length) {
|
|
2251 |
QName[] array = new QName[fElements.length * 2];
|
|
2252 |
System.arraycopy(fElements, 0, array, 0, fDepth);
|
|
2253 |
fElements = array;
|
|
2254 |
for (int i = fDepth; i < fElements.length; i++) {
|
|
2255 |
fElements[i] = new QName();
|
|
2256 |
}
|
|
2257 |
}
|
|
2258 |
fElements[fDepth].setValues(element);
|
|
2259 |
return fElements[fDepth++];
|
|
2260 |
} // pushElement(QName):QName
|
|
2261 |
|
|
2262 |
|
|
2263 |
/** Note that this function is considerably different than nextElement()
|
|
2264 |
* This function just returns the previously stored elements
|
|
2265 |
*/
|
|
2266 |
public QName getNext(){
|
|
2267 |
//when position reaches number of elements in the list..
|
|
2268 |
//set the position back to mark, making it a circular linked list.
|
|
2269 |
if(fPosition == fCount){
|
|
2270 |
fPosition = fMark;
|
|
2271 |
}
|
|
2272 |
//store the position of last opened tag at particular depth
|
|
2273 |
//fInt[++fDepth] = fPosition;
|
|
2274 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2275 |
System.out.println("Element at fPosition = " + fPosition + " is " + fElements[fPosition].rawname);
|
|
2276 |
}
|
|
2277 |
//return fElements[fPosition++];
|
|
2278 |
return fElements[fPosition];
|
|
2279 |
}
|
|
2280 |
|
|
2281 |
/** This function should be called only when element was skipped sucessfully.
|
|
2282 |
* 1. Increase the depth - because element was sucessfully skipped.
|
|
2283 |
*2. Store the position of the element token in array "last opened tag" at depth.
|
|
2284 |
*3. increase the position counter so as to point to the next element in the array
|
|
2285 |
*/
|
|
2286 |
public void push(){
|
|
2287 |
|
|
2288 |
fInt[++fDepth] = fPosition++;
|
|
2289 |
}
|
|
2290 |
|
|
2291 |
/** Check if the element scanned during the start element
|
|
2292 |
*matches the stored element.
|
|
2293 |
*
|
|
2294 |
*@return true if the match suceeds.
|
|
2295 |
*/
|
|
2296 |
public boolean matchElement(QName element) {
|
|
2297 |
//last depth is the depth when last elemnt was pushed
|
|
2298 |
//if last depth is greater than current depth
|
|
2299 |
//if(DEBUG_SKIP_ALGORITHM){
|
|
2300 |
// System.out.println("Check if the element " + element.rawname + " matches");
|
|
2301 |
// System.out.println("fLastDepth = " + fLastDepth);
|
|
2302 |
// System.out.println("fDepth = " + fDepth);
|
|
2303 |
//}
|
|
2304 |
boolean match = false;
|
|
2305 |
if(fLastDepth > fDepth && fDepth <= 3){
|
|
2306 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2307 |
System.out.println("----------ENTERED THE LOOP WHERE WE CHECK FOR MATCHING OF ELMENT-----");
|
|
2308 |
System.out.println("Depth = " + fDepth + " Checking if INCOMING element " + element.rawname + " match STORED ELEMENT " + fElements[fDepth - 1].rawname);
|
|
2309 |
}
|
|
2310 |
if(element.rawname == fElements[fDepth - 1].rawname){
|
|
2311 |
fAdd = false;
|
|
2312 |
//mark this position
|
|
2313 |
//decrease the depth by 1 as arrays are 0 based
|
|
2314 |
fMark = fDepth - 1;
|
|
2315 |
//we found the match
|
|
2316 |
fPosition = fMark;
|
|
2317 |
match = true;
|
|
2318 |
//Once we get match decrease the count -- this was increased by nextElement()
|
|
2319 |
--fCount;
|
|
2320 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2321 |
System.out.println("NOW ELEMENT SHOULD NOT BE ADDED, fAdd is set to false");
|
|
2322 |
System.out.println("fMark = " + fMark);
|
|
2323 |
System.out.println("fPosition = " + fPosition);
|
|
2324 |
System.out.println("fDepth = " + fDepth);
|
|
2325 |
System.out.println("fCount = " + fCount);
|
|
2326 |
System.out.println("---------MATCH SUCEEDED-----------------");
|
|
2327 |
System.out.println("");
|
|
2328 |
}
|
|
2329 |
}else{
|
|
2330 |
fAdd = true;
|
|
2331 |
if(DEBUG_SKIP_ALGORITHM)System.out.println("fAdd is " + fAdd);
|
|
2332 |
}
|
|
2333 |
}
|
|
2334 |
//store the position for the current depth
|
|
2335 |
//when we are adding the elements, when skipping
|
|
2336 |
//starts even then this should be tracked ie. when
|
|
2337 |
//calling getNext()
|
|
2338 |
if(match){
|
|
2339 |
//from next element skipping will start, add 1
|
|
2340 |
fInt[fDepth] = fPosition++;
|
|
2341 |
} else{
|
|
2342 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2343 |
System.out.println("At depth = " + fDepth + "array position is = " + (fCount - 1));
|
|
2344 |
}
|
|
2345 |
//sicne fInt[fDepth] contains pointer to the element array which are 0 based.
|
|
2346 |
fInt[fDepth] = fCount - 1;
|
|
2347 |
}
|
|
2348 |
|
|
2349 |
//if number of elements becomes equal to the length of array -- stop the skipping
|
|
2350 |
//xxx: should we do "fCount == fInt.length"
|
|
2351 |
if (fCount == fElements.length) {
|
|
2352 |
fSkip = false;
|
|
2353 |
fAdd = false;
|
|
2354 |
//reposition the stack -- it seems to be too complex document and there is no symmerty in structure
|
|
2355 |
reposition();
|
|
2356 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2357 |
System.out.println("ALL THE ELMENTS IN ARRAY HAVE BEEN FILLED");
|
|
2358 |
System.out.println("REPOSITIONING THE STACK");
|
|
2359 |
System.out.println("-----------SKIPPING STOPPED----------");
|
|
2360 |
System.out.println("");
|
|
2361 |
}
|
|
2362 |
return false;
|
|
2363 |
}
|
|
2364 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2365 |
if(match){
|
|
2366 |
System.out.println("Storing fPosition = " + fInt[fDepth] + " at fDepth = " + fDepth);
|
|
2367 |
}else{
|
|
2368 |
System.out.println("Storing fCount = " + fInt[fDepth] + " at fDepth = " + fDepth);
|
|
2369 |
}
|
|
2370 |
}
|
|
2371 |
//store the last depth
|
|
2372 |
fLastDepth = fDepth;
|
|
2373 |
return match;
|
|
2374 |
} // matchElement(QName):QName
|
|
2375 |
|
|
2376 |
|
|
2377 |
/**
|
|
2378 |
* Returns the next element on the stack.
|
|
2379 |
*
|
|
2380 |
* @return Returns the actual QName object. Callee should
|
|
2381 |
* use this object to store the details of next element encountered.
|
|
2382 |
*/
|
|
2383 |
public QName nextElement() {
|
|
2384 |
if(fSkip){
|
|
2385 |
fDepth++;
|
|
2386 |
//boundary checks are done in matchElement()
|
|
2387 |
return fElements[fCount++];
|
|
2388 |
} else if (fDepth == fElements.length) {
|
|
2389 |
QName[] array = new QName[fElements.length * 2];
|
|
2390 |
System.arraycopy(fElements, 0, array, 0, fDepth);
|
|
2391 |
fElements = array;
|
|
2392 |
for (int i = fDepth; i < fElements.length; i++) {
|
|
2393 |
fElements[i] = new QName();
|
|
2394 |
}
|
|
2395 |
}
|
|
2396 |
|
|
2397 |
return fElements[fDepth++];
|
|
2398 |
|
|
2399 |
} // pushElement(QName):QName
|
|
2400 |
|
|
2401 |
|
|
2402 |
/**
|
|
2403 |
* Pops an element off of the stack by setting the values of
|
|
2404 |
* the specified QName.
|
|
2405 |
* <p>
|
|
2406 |
* <strong>Note:</strong> The object returned is <em>not</em>
|
|
2407 |
* orphaned to the caller. Therefore, the caller should consider
|
|
2408 |
* the object to be read-only.
|
|
2409 |
*/
|
|
2410 |
public QName popElement() {
|
|
2411 |
//return the same object that was pushed -- this would avoid
|
|
2412 |
//setting the values for every end element.
|
|
2413 |
//STRONG: this object is read only -- this object reference shouldn't be stored.
|
|
2414 |
if(fSkip || fAdd ){
|
|
2415 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2416 |
System.out.println("POPPING Element, at position " + fInt[fDepth] + " element at that count is = " + fElements[fInt[fDepth]].rawname);
|
|
2417 |
System.out.println("");
|
|
2418 |
}
|
|
2419 |
return fElements[fInt[fDepth--]];
|
|
2420 |
} else{
|
|
2421 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2422 |
System.out.println("Retrieveing element at depth = " + fDepth + " is " + fElements[fDepth].rawname );
|
|
2423 |
}
|
|
2424 |
return fElements[--fDepth] ;
|
|
2425 |
}
|
|
2426 |
//element.setValues(fElements[--fDepth]);
|
|
2427 |
} // popElement(QName)
|
|
2428 |
|
|
2429 |
/** Reposition the stack. fInt [] contains all the opened tags at particular depth.
|
|
2430 |
* Transfer all the opened tags starting from depth '2' to the current depth and reposition them
|
|
2431 |
*as per the depth.
|
|
2432 |
*/
|
|
2433 |
public void reposition(){
|
|
2434 |
for( int i = 2 ; i <= fDepth ; i++){
|
|
2435 |
fElements[i-1] = fElements[fInt[i]];
|
|
2436 |
}
|
|
2437 |
if(DEBUG_SKIP_ALGORITHM){
|
|
2438 |
for( int i = 0 ; i < fDepth ; i++){
|
|
2439 |
System.out.println("fElements[" + i + "]" + " = " + fElements[i].rawname);
|
|
2440 |
}
|
|
2441 |
}
|
|
2442 |
}
|
|
2443 |
|
|
2444 |
/** Clears the stack without throwing away existing QName objects. */
|
|
2445 |
public void clear() {
|
|
2446 |
fDepth = 0;
|
|
2447 |
fLastDepth = 0;
|
|
2448 |
fCount = 0 ;
|
|
2449 |
fPosition = fMark = 1;
|
|
2450 |
|
|
2451 |
} // clear()
|
|
2452 |
|
|
2453 |
/**
|
|
2454 |
* This function is as a result of optimization done for endElement --
|
|
2455 |
* we dont need to set the value for every end element encouterd.
|
|
2456 |
* For Well formedness checks we can have the same QName object that was pushed.
|
|
2457 |
* the values will be set only if application need to know about the endElement
|
|
2458 |
* -- neeraj.bajaj@sun.com
|
|
2459 |
*/
|
|
2460 |
|
|
2461 |
public QName getLastPoppedElement(){
|
|
2462 |
return fElements[fDepth];
|
|
2463 |
}
|
|
2464 |
} // class ElementStack
|
|
2465 |
|
|
2466 |
/**
|
|
2467 |
* Drives the parser to the next state/event on the input. Parser is guaranteed
|
|
2468 |
* to stop at the next state/event.
|
|
2469 |
*
|
|
2470 |
* Internally XML document is divided into several states. Each state represents
|
|
2471 |
* a sections of XML document. When this functions returns normally, it has read
|
|
2472 |
* the section of XML document and returns the state corresponding to section of
|
|
2473 |
* document which has been read. For optimizations, a particular driver
|
|
2474 |
* can read ahead of the section of document (state returned) just read and
|
|
2475 |
* can maintain a different internal state.
|
|
2476 |
*
|
|
2477 |
*
|
|
2478 |
* @author Neeraj Bajaj, Sun Microsystems
|
|
2479 |
*/
|
|
2480 |
protected interface Driver {
|
|
2481 |
|
|
2482 |
|
|
2483 |
/**
|
|
2484 |
* Drives the parser to the next state/event on the input. Parser is guaranteed
|
|
2485 |
* to stop at the next state/event.
|
|
2486 |
*
|
|
2487 |
* Internally XML document is divided into several states. Each state represents
|
|
2488 |
* a sections of XML document. When this functions returns normally, it has read
|
|
2489 |
* the section of XML document and returns the state corresponding to section of
|
|
2490 |
* document which has been read. For optimizations, a particular driver
|
|
2491 |
* can read ahead of the section of document (state returned) just read and
|
|
2492 |
* can maintain a different internal state.
|
|
2493 |
*
|
|
2494 |
* @return state representing the section of document just read.
|
|
2495 |
*
|
|
2496 |
* @throws IOException Thrown on i/o error.
|
|
2497 |
* @throws XNIException Thrown on parse error.
|
|
2498 |
*/
|
|
2499 |
|
|
2500 |
public int next() throws IOException, XNIException;
|
|
2501 |
|
|
2502 |
} // interface Driver
|
|
2503 |
|
|
2504 |
/**
|
|
2505 |
* Driver to handle content scanning. This driver is capable of reading
|
|
2506 |
* the fragment of XML document. When it has finished reading fragment
|
|
2507 |
* of XML documents, it can pass the job of reading to another driver.
|
|
2508 |
*
|
|
2509 |
* This class has been modified as per the new design which is more suited to
|
|
2510 |
* efficiently build pull parser. Lot of performance improvements have been done and
|
|
2511 |
* the code has been added to support stax functionality/features.
|
|
2512 |
*
|
|
2513 |
* @author Neeraj Bajaj, Sun Microsystems
|
|
2514 |
*
|
|
2515 |
*
|
|
2516 |
* @author Andy Clark, IBM
|
|
2517 |
* @author Eric Ye, IBM
|
|
2518 |
*/
|
|
2519 |
protected class FragmentContentDriver
|
|
2520 |
implements Driver {
|
|
2521 |
|
|
2522 |
//
|
|
2523 |
// Driver methods
|
|
2524 |
//
|
|
2525 |
private boolean fContinueDispatching = true;
|
|
2526 |
private boolean fScanningForMarkup = true;
|
|
2527 |
|
|
2528 |
/**
|
|
2529 |
* decides the appropriate state of the parser
|
|
2530 |
*/
|
|
2531 |
private void startOfMarkup() throws IOException {
|
|
2532 |
fMarkupDepth++;
|
|
2533 |
final int ch = fEntityScanner.peekChar();
|
|
2534 |
|
|
2535 |
switch(ch){
|
|
2536 |
case '?' :{
|
|
2537 |
setScannerState(SCANNER_STATE_PI);
|
|
2538 |
fEntityScanner.skipChar(ch);
|
|
2539 |
break;
|
|
2540 |
}
|
|
2541 |
case '!' :{
|
|
2542 |
fEntityScanner.skipChar(ch);
|
|
2543 |
if (fEntityScanner.skipChar('-')) {
|
|
2544 |
if (!fEntityScanner.skipChar('-')) {
|
|
2545 |
reportFatalError("InvalidCommentStart",
|
|
2546 |
null);
|
|
2547 |
}
|
|
2548 |
setScannerState(SCANNER_STATE_COMMENT);
|
|
2549 |
} else if (fEntityScanner.skipString(cdata)) {
|
|
2550 |
setScannerState(SCANNER_STATE_CDATA );
|
|
2551 |
} else if (!scanForDoctypeHook()) {
|
|
2552 |
reportFatalError("MarkupNotRecognizedInContent",
|
|
2553 |
null);
|
|
2554 |
}
|
|
2555 |
break;
|
|
2556 |
}
|
|
2557 |
case '/' :{
|
|
2558 |
setScannerState(SCANNER_STATE_END_ELEMENT_TAG);
|
|
2559 |
fEntityScanner.skipChar(ch);
|
|
2560 |
break;
|
|
2561 |
}
|
|
2562 |
default :{
|
|
2563 |
if (isValidNameStartChar(ch)) {
|
|
2564 |
setScannerState(SCANNER_STATE_START_ELEMENT_TAG);
|
|
2565 |
} else {
|
|
2566 |
reportFatalError("MarkupNotRecognizedInContent",
|
|
2567 |
null);
|
|
2568 |
}
|
|
2569 |
}
|
|
2570 |
}
|
|
2571 |
|
|
2572 |
}//startOfMarkup
|
|
2573 |
|
|
2574 |
private void startOfContent() throws IOException {
|
|
2575 |
if (fEntityScanner.skipChar('<')) {
|
|
2576 |
setScannerState(SCANNER_STATE_START_OF_MARKUP);
|
|
2577 |
} else if (fEntityScanner.skipChar('&')) {
|
|
2578 |
setScannerState(SCANNER_STATE_REFERENCE) ; //XMLEvent.ENTITY_REFERENCE ); //SCANNER_STATE_REFERENCE
|
|
2579 |
} else {
|
|
2580 |
//element content is there..
|
|
2581 |
setScannerState(SCANNER_STATE_CHARACTER_DATA);
|
|
2582 |
}
|
|
2583 |
}//startOfContent
|
|
2584 |
|
|
2585 |
|
|
2586 |
/**
|
|
2587 |
*
|
|
2588 |
* SCANNER_STATE_CONTENT and SCANNER_STATE_START_OF_MARKUP are two super states of the parser.
|
|
2589 |
* At any point of time when in doubt over the current state of the parser, the state should be
|
|
2590 |
* set to SCANNER_STATE_CONTENT. Parser will automatically revive itself and will set state of
|
|
2591 |
* the parser to one of its sub state.
|
|
2592 |
* sub states are defined in the parser on the basis of different XML component like
|
|
2593 |
* SCANNER_STATE_ENTITY_REFERENCE , SCANNER_STATE_START_ELEMENT, SCANNER_STATE_CDATA etc..
|
|
2594 |
* These sub states help the parser to have fine control over the parsing. These are the
|
|
2595 |
* different milepost, parser stops at each sub state (milepost). Based on this state it is
|
|
2596 |
* decided if paresr needs to stop at next milepost ??
|
|
2597 |
*
|
|
2598 |
*/
|
|
2599 |
public void decideSubState() throws IOException {
|
|
2600 |
while( fScannerState == SCANNER_STATE_CONTENT || fScannerState == SCANNER_STATE_START_OF_MARKUP){
|
|
2601 |
|
|
2602 |
switch (fScannerState) {
|
|
2603 |
|
|
2604 |
case SCANNER_STATE_CONTENT: {
|
|
2605 |
startOfContent() ;
|
|
2606 |
break;
|
|
2607 |
}
|
|
2608 |
|
|
2609 |
case SCANNER_STATE_START_OF_MARKUP: {
|
|
2610 |
startOfMarkup() ;
|
|
2611 |
break;
|
|
2612 |
}
|
|
2613 |
}
|
|
2614 |
}
|
|
2615 |
}//decideSubState
|
|
2616 |
|
|
2617 |
/**
|
|
2618 |
* Drives the parser to the next state/event on the input. Parser is guaranteed
|
|
2619 |
* to stop at the next state/event. Internally XML document
|
|
2620 |
* is divided into several states. Each state represents a sections of XML
|
|
2621 |
* document. When this functions returns normally, it has read the section
|
|
2622 |
* of XML document and returns the state corresponding to section of
|
|
2623 |
* document which has been read. For optimizations, a particular driver
|
|
2624 |
* can read ahead of the section of document (state returned) just read and
|
|
2625 |
* can maintain a different internal state.
|
|
2626 |
*
|
|
2627 |
* State returned corresponds to Stax states.
|
|
2628 |
*
|
|
2629 |
* @return state representing the section of document just read.
|
|
2630 |
*
|
|
2631 |
* @throws IOException Thrown on i/o error.
|
|
2632 |
* @throws XNIException Thrown on parse error.
|
|
2633 |
*/
|
|
2634 |
|
|
2635 |
public int next() throws IOException, XNIException {
|
|
2636 |
while (true) {
|
|
2637 |
try {
|
|
2638 |
if(DEBUG_NEXT){
|
|
2639 |
System.out.println("NOW IN FragmentContentDriver");
|
|
2640 |
System.out.println("Entering the FragmentContentDriver with = " + getScannerStateName(fScannerState));
|
|
2641 |
}
|
|
2642 |
|
|
2643 |
//decide the actual sub state of the scanner.For more information refer to the javadoc of
|
|
2644 |
//decideSubState.
|
|
2645 |
|
|
2646 |
switch (fScannerState) {
|
|
2647 |
case SCANNER_STATE_CONTENT: {
|
|
2648 |
final int ch = fEntityScanner.peekChar();
|
|
2649 |
if (ch == '<') {
|
|
2650 |
fEntityScanner.scanChar();
|
|
2651 |
setScannerState(SCANNER_STATE_START_OF_MARKUP);
|
|
2652 |
} else if (ch == '&') {
|
|
2653 |
fEntityScanner.scanChar();
|
|
2654 |
setScannerState(SCANNER_STATE_REFERENCE) ; //XMLEvent.ENTITY_REFERENCE ); //SCANNER_STATE_REFERENCE
|
|
2655 |
break;
|
|
2656 |
} else {
|
|
2657 |
//element content is there..
|
|
2658 |
setScannerState(SCANNER_STATE_CHARACTER_DATA);
|
|
2659 |
break;
|
|
2660 |
}
|
|
2661 |
}
|
|
2662 |
|
|
2663 |
case SCANNER_STATE_START_OF_MARKUP: {
|
|
2664 |
startOfMarkup();
|
|
2665 |
break;
|
|
2666 |
}//case: SCANNER_STATE_START_OF_MARKUP
|
|
2667 |
|
|
2668 |
}//end of switch
|
|
2669 |
//decideSubState() ;
|
|
2670 |
|
|
2671 |
//do some special handling if isCoalesce is set to true.
|
|
2672 |
if(fIsCoalesce){
|
|
2673 |
fUsebuffer = true ;
|
|
2674 |
//if the last section was character data
|
|
2675 |
if(fLastSectionWasCharacterData){
|
|
2676 |
|
|
2677 |
//if we dont encounter any CDATA or ENITY REFERENCE and current state is also not SCANNER_STATE_CHARACTER_DATA
|
|
2678 |
//return the last scanned charactrer data.
|
|
2679 |
if((fScannerState != SCANNER_STATE_CDATA) && (fScannerState != SCANNER_STATE_REFERENCE)
|
|
2680 |
&& (fScannerState != SCANNER_STATE_CHARACTER_DATA)){
|
|
2681 |
fLastSectionWasCharacterData = false;
|
|
2682 |
return XMLEvent.CHARACTERS;
|
|
2683 |
}
|
|
2684 |
}//if last section was CDATA or ENTITY REFERENCE
|
|
2685 |
//xxx: there might be another entity reference or CDATA after this
|
|
2686 |
//<foo>blah blah &<<![CDATA[[aa]]>blah blah</foo>
|
|
2687 |
else if((fLastSectionWasCData || fLastSectionWasEntityReference)){
|
|
2688 |
//and current state is not SCANNER_STATE_CHARACTER_DATA
|
|
2689 |
//or SCANNER_STATE_CDATA or SCANNER_STATE_REFERENCE
|
|
2690 |
//this means there is nothing more to be coalesced.
|
|
2691 |
//return the CHARACTERS event.
|
|
2692 |
if((fScannerState != SCANNER_STATE_CDATA) && (fScannerState != SCANNER_STATE_REFERENCE)
|
|
2693 |
&& (fScannerState != SCANNER_STATE_CHARACTER_DATA)){
|
|
2694 |
|
|
2695 |
fLastSectionWasCData = false;
|
|
2696 |
fLastSectionWasEntityReference = false;
|
|
2697 |
return XMLEvent.CHARACTERS;
|
|
2698 |
}
|
|
2699 |
}
|
|
2700 |
}
|
|
2701 |
|
|
2702 |
|
|
2703 |
if(DEBUG_NEXT){
|
|
2704 |
System.out.println("Actual scanner state set by decideSubState is = " + getScannerStateName(fScannerState));
|
|
2705 |
}
|
|
2706 |
|
|
2707 |
switch(fScannerState){
|
|
2708 |
|
|
2709 |
case XMLEvent.START_DOCUMENT :
|
|
2710 |
return XMLEvent.START_DOCUMENT;
|
|
2711 |
|
|
2712 |
case SCANNER_STATE_START_ELEMENT_TAG :{
|
|
2713 |
|
|
2714 |
//xxx this function returns true when element is empty.. can be linked to end element event.
|
|
2715 |
//returns true if the element is empty
|
|
2716 |
fEmptyElement = scanStartElement() ;
|
|
2717 |
//if the element is empty the next event is "end element"
|
|
2718 |
if(fEmptyElement){
|
|
2719 |
setScannerState(SCANNER_STATE_END_ELEMENT_TAG);
|
|
2720 |
}else{
|
|
2721 |
//set the next possible state
|
|
2722 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2723 |
}
|
|
2724 |
return XMLEvent.START_ELEMENT ;
|
|
2725 |
}
|
|
2726 |
|
|
2727 |
case SCANNER_STATE_CHARACTER_DATA: {
|
|
2728 |
if(DEBUG_COALESCE){
|
|
2729 |
System.out.println("fLastSectionWasCData = " + fLastSectionWasCData);
|
|
2730 |
System.out.println("fIsCoalesce = " + fIsCoalesce);
|
|
2731 |
}
|
|
2732 |
//if last section was either entity reference or cdata or character data we should be using buffer
|
|
2733 |
fUsebuffer = fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData ;
|
|
2734 |
|
|
2735 |
//When coalesce is set to true and last state was REFERENCE or CDATA or CHARACTER_DATA, buffer should not be cleared.
|
|
2736 |
if( fIsCoalesce && (fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData) ){
|
|
2737 |
fLastSectionWasEntityReference = false;
|
|
2738 |
fLastSectionWasCData = false;
|
|
2739 |
fLastSectionWasCharacterData = true ;
|
|
2740 |
fUsebuffer = true;
|
|
2741 |
}else{
|
|
2742 |
//clear the buffer
|
|
2743 |
fContentBuffer.clear();
|
|
2744 |
}
|
|
2745 |
|
|
2746 |
//set the fTempString length to 0 before passing it on to scanContent
|
|
2747 |
//scanContent sets the correct co-ordinates as per the content read
|
|
2748 |
fTempString.length = 0;
|
|
2749 |
int c = fEntityScanner.scanContent(fTempString);
|
|
2750 |
if(DEBUG){
|
|
2751 |
System.out.println("fTempString = " + fTempString);
|
|
2752 |
}
|
|
2753 |
if(fEntityScanner.skipChar('<')){
|
|
2754 |
//check if we have reached end of element
|
|
2755 |
if(fEntityScanner.skipChar('/')){
|
|
2756 |
//increase the mark up depth
|
|
2757 |
fMarkupDepth++;
|
|
2758 |
fLastSectionWasCharacterData = false;
|
|
2759 |
setScannerState(SCANNER_STATE_END_ELEMENT_TAG);
|
|
2760 |
//check if its start of new element
|
|
2761 |
}else if(XMLChar.isNameStart(fEntityScanner.peekChar())){
|
|
2762 |
fMarkupDepth++;
|
|
2763 |
fLastSectionWasCharacterData = false;
|
|
2764 |
setScannerState(SCANNER_STATE_START_ELEMENT_TAG);
|
|
2765 |
}else{
|
|
2766 |
setScannerState(SCANNER_STATE_START_OF_MARKUP);
|
|
2767 |
//there can be cdata ahead if coalesce is true we should call again
|
|
2768 |
if(fIsCoalesce){
|
|
2769 |
fUsebuffer = true;
|
|
2770 |
fLastSectionWasCharacterData = true;
|
|
2771 |
fContentBuffer.append(fTempString);
|
|
2772 |
fTempString.length = 0;
|
|
2773 |
continue;
|
|
2774 |
}
|
|
2775 |
}
|
|
2776 |
//in case last section was either entity reference or cdata or character data -- we should be using buffer
|
|
2777 |
if(fUsebuffer){
|
|
2778 |
fContentBuffer.append(fTempString);
|
|
2779 |
fTempString.length = 0;
|
|
2780 |
}
|
|
2781 |
if(DEBUG){
|
|
2782 |
System.out.println("NOT USING THE BUFFER, STRING = " + fTempString.toString());
|
|
2783 |
}
|
|
2784 |
if(dtdGrammarUtil!= null && dtdGrammarUtil.isIgnorableWhiteSpace(fContentBuffer)){
|
|
2785 |
if(DEBUG)System.out.println("Return SPACE EVENT");
|
|
2786 |
return XMLEvent.SPACE;
|
|
2787 |
}else
|
|
2788 |
return XMLEvent.CHARACTERS;
|
|
2789 |
|
|
2790 |
} else{
|
|
2791 |
fUsebuffer = true ;
|
|
2792 |
if(DEBUG){
|
|
2793 |
System.out.println("fContentBuffer = " + fContentBuffer);
|
|
2794 |
System.out.println("fTempString = " + fTempString);
|
|
2795 |
}
|
|
2796 |
fContentBuffer.append(fTempString);
|
|
2797 |
fTempString.length = 0;
|
|
2798 |
}
|
|
2799 |
if (c == '\r') {
|
|
2800 |
if(DEBUG){
|
|
2801 |
System.out.println("'\r' character found");
|
|
2802 |
}
|
|
2803 |
// happens when there is the character reference
|
|
2804 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry
|
|
2805 |
fEntityScanner.scanChar();
|
|
2806 |
fUsebuffer = true;
|
|
2807 |
fContentBuffer.append((char)c);
|
|
2808 |
c = -1 ;
|
|
2809 |
} else if (c == ']') {
|
|
2810 |
//fStringBuffer.clear();
|
|
2811 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry
|
|
2812 |
fUsebuffer = true;
|
|
2813 |
fContentBuffer.append((char)fEntityScanner.scanChar());
|
|
2814 |
// remember where we are in case we get an endEntity before we
|
|
2815 |
// could flush the buffer out - this happens when we're parsing an
|
|
2816 |
// entity which ends with a ]
|
|
2817 |
fInScanContent = true;
|
|
2818 |
|
|
2819 |
// We work on a single character basis to handle cases such as:
|
|
2820 |
// ']]]>' which we might otherwise miss.
|
|
2821 |
//
|
|
2822 |
if (fEntityScanner.skipChar(']')) {
|
|
2823 |
fContentBuffer.append(']');
|
|
2824 |
while (fEntityScanner.skipChar(']')) {
|
|
2825 |
fContentBuffer.append(']');
|
|
2826 |
}
|
|
2827 |
if (fEntityScanner.skipChar('>')) {
|
|
2828 |
reportFatalError("CDEndInContent", null);
|
|
2829 |
}
|
|
2830 |
}
|
|
2831 |
c = -1 ;
|
|
2832 |
fInScanContent = false;
|
|
2833 |
}
|
|
2834 |
|
|
2835 |
do{
|
|
2836 |
//xxx: we should be using only one buffer..
|
|
2837 |
// we need not to grow the buffer only when isCoalesce() is not true;
|
|
2838 |
|
|
2839 |
if (c == '<') {
|
|
2840 |
fEntityScanner.scanChar();
|
|
2841 |
setScannerState(SCANNER_STATE_START_OF_MARKUP);
|
|
2842 |
break;
|
|
2843 |
}//xxx what should be the behavior if entity reference is present in the content ?
|
|
2844 |
else if (c == '&') {
|
|
2845 |
fEntityScanner.scanChar();
|
|
2846 |
setScannerState(SCANNER_STATE_REFERENCE);
|
|
2847 |
break;
|
|
2848 |
}///xxx since this part is also characters, it should be merged...
|
|
2849 |
else if (c != -1 && isInvalidLiteral(c)) {
|
|
2850 |
if (XMLChar.isHighSurrogate(c)) {
|
|
2851 |
// special case: surrogates
|
|
2852 |
scanSurrogates(fContentBuffer) ;
|
|
2853 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2854 |
} else {
|
|
2855 |
reportFatalError("InvalidCharInContent",
|
|
2856 |
new Object[] {
|
|
2857 |
Integer.toString(c, 16)});
|
|
2858 |
fEntityScanner.scanChar();
|
|
2859 |
}
|
|
2860 |
break;
|
|
2861 |
}
|
|
2862 |
//xxx: scanContent also gives character callback.
|
|
2863 |
c = scanContent(fContentBuffer) ;
|
|
2864 |
//we should not be iterating again if fIsCoalesce is not set to true
|
|
2865 |
|
|
2866 |
if(!fIsCoalesce){
|
|
2867 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2868 |
break;
|
|
2869 |
}
|
|
2870 |
|
|
2871 |
}while(true);
|
|
2872 |
|
|
2873 |
//if (fDocumentHandler != null) {
|
|
2874 |
// fDocumentHandler.characters(fContentBuffer, null);
|
|
2875 |
//}
|
|
2876 |
if(DEBUG)System.out.println("USING THE BUFFER, STRING START=" + fContentBuffer.toString() +"=END");
|
|
2877 |
//if fIsCoalesce is true there might be more data so call fDriver.next()
|
|
2878 |
if(fIsCoalesce){
|
|
2879 |
fLastSectionWasCharacterData = true ;
|
|
2880 |
continue;
|
|
2881 |
}else{
|
|
2882 |
if(dtdGrammarUtil!= null && dtdGrammarUtil.isIgnorableWhiteSpace(fContentBuffer)){
|
|
2883 |
if(DEBUG)System.out.println("Return SPACE EVENT");
|
|
2884 |
return XMLEvent.SPACE;
|
|
2885 |
} else
|
|
2886 |
return XMLEvent.CHARACTERS ;
|
|
2887 |
}
|
|
2888 |
}
|
|
2889 |
|
|
2890 |
case SCANNER_STATE_END_ELEMENT_TAG :{
|
|
2891 |
if(fEmptyElement){
|
|
2892 |
//set it back to false.
|
|
2893 |
fEmptyElement = false;
|
|
2894 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2895 |
//check the case when there is comment after single element document
|
|
2896 |
//<foo/> and some comment after this
|
|
2897 |
return (fMarkupDepth == 0 && elementDepthIsZeroHook() ) ? XMLEvent.END_ELEMENT : XMLEvent.END_ELEMENT ;
|
|
2898 |
|
|
2899 |
} else if(scanEndElement() == 0) {
|
|
2900 |
//It is last element of the document
|
|
2901 |
if (elementDepthIsZeroHook()) {
|
|
2902 |
//if element depth is zero , it indicates the end of the document
|
|
2903 |
//the state shouldn't be set, because it is set by elementDepthIsZeroHook() function
|
|
2904 |
//xxx understand this point once again..
|
|
2905 |
return XMLEvent.END_ELEMENT ;
|
|
2906 |
}
|
|
2907 |
|
|
2908 |
}
|
|
2909 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2910 |
return XMLEvent.END_ELEMENT ;
|
|
2911 |
}
|
|
2912 |
|
|
2913 |
case SCANNER_STATE_COMMENT: { //SCANNER_STATE_COMMENT:
|
|
2914 |
scanComment();
|
|
2915 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2916 |
return XMLEvent.COMMENT;
|
|
2917 |
//break;
|
|
2918 |
}
|
|
2919 |
case SCANNER_STATE_PI:{ //SCANNER_STATE_PI: {
|
|
2920 |
//clear the buffer first
|
|
2921 |
fContentBuffer.clear() ;
|
|
2922 |
//xxx: which buffer should be passed. Ideally we shouldn't have
|
|
2923 |
//more than two buffers --
|
|
2924 |
//xxx: where should we add the switch for buffering.
|
|
2925 |
scanPI(fContentBuffer);
|
|
2926 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2927 |
return XMLEvent.PROCESSING_INSTRUCTION;
|
|
2928 |
//break;
|
|
2929 |
}
|
|
2930 |
case SCANNER_STATE_CDATA :{ //SCANNER_STATE_CDATA: {
|
|
2931 |
//xxx: What if CDATA is the first event
|
|
2932 |
//<foo><![CDATA[hello<><>]]>append</foo>
|
|
2933 |
|
|
2934 |
//we should not clear the buffer only when the last state was either SCANNER_STATE_REFERENCE or
|
|
2935 |
//SCANNER_STATE_CHARACTER_DATA or SCANNER_STATE_REFERENCE
|
|
2936 |
if(fIsCoalesce && ( fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData)){
|
|
2937 |
fLastSectionWasCData = true ;
|
|
2938 |
fLastSectionWasEntityReference = false;
|
|
2939 |
fLastSectionWasCharacterData = false;
|
|
2940 |
}//if we dont need to coalesce clear the buffer
|
|
2941 |
else{
|
|
2942 |
fContentBuffer.clear();
|
|
2943 |
}
|
|
2944 |
fUsebuffer = true;
|
|
2945 |
//CDATA section is completely read in all the case.
|
|
2946 |
scanCDATASection(fContentBuffer , true);
|
|
2947 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2948 |
//1. if fIsCoalesce is set to true we set the variable fLastSectionWasCData to true
|
|
2949 |
//and just call fDispatche.next(). Since we have set the scanner state to
|
|
2950 |
//SCANNER_STATE_CONTENT (super state) parser will automatically recover and
|
|
2951 |
//behave appropriately. When isCoalesce is set to true we dont need to reportCDATA event
|
|
2952 |
//2. Check if application has set for reporting CDATA event
|
|
2953 |
//3. if the application has neither set the fIsCoalesce to true nor fReportCdataEvent
|
|
2954 |
//return the cdata event as characters.
|
|
2955 |
if(fIsCoalesce){
|
|
2956 |
fLastSectionWasCData = true ;
|
|
2957 |
//there might be more data to coalesce.
|
|
2958 |
continue;
|
|
2959 |
}else if(fReportCdataEvent){
|
|
2960 |
return XMLEvent.CDATA;
|
|
2961 |
} else{
|
|
2962 |
return XMLEvent.CHARACTERS;
|
|
2963 |
}
|
|
2964 |
}
|
|
2965 |
|
|
2966 |
case SCANNER_STATE_REFERENCE :{
|
|
2967 |
fMarkupDepth++;
|
|
2968 |
foundBuiltInRefs = false;
|
|
2969 |
|
|
2970 |
//we should not clear the buffer only when the last state was either CDATA or
|
|
2971 |
//SCANNER_STATE_CHARACTER_DATA or SCANNER_STATE_REFERENCE
|
|
2972 |
if(fIsCoalesce && ( fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData)){
|
|
2973 |
//fLastSectionWasEntityReference or fLastSectionWasCData are only
|
|
2974 |
//used when fIsCoalesce is set to true.
|
|
2975 |
fLastSectionWasEntityReference = true ;
|
|
2976 |
fLastSectionWasCData = false;
|
|
2977 |
fLastSectionWasCharacterData = false;
|
|
2978 |
}//if we dont need to coalesce clear the buffer
|
|
2979 |
else{
|
|
2980 |
fContentBuffer.clear();
|
|
2981 |
}
|
|
2982 |
fUsebuffer = true ;
|
|
2983 |
//take care of character reference
|
|
2984 |
if (fEntityScanner.skipChar('#')) {
|
|
2985 |
scanCharReferenceValue(fContentBuffer, null);
|
|
2986 |
fMarkupDepth--;
|
|
2987 |
if(!fIsCoalesce){
|
|
2988 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2989 |
return XMLEvent.CHARACTERS;
|
|
2990 |
}
|
|
2991 |
} else {
|
|
2992 |
// this function also starts new entity
|
|
2993 |
scanEntityReference(fContentBuffer);
|
|
2994 |
//if there was built-in entity reference & coalesce is not true
|
|
2995 |
//return CHARACTERS
|
|
2996 |
if(fScannerState == SCANNER_STATE_BUILT_IN_REFS && !fIsCoalesce){
|
|
2997 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
2998 |
return XMLEvent.CHARACTERS;
|
|
2999 |
}
|
|
3000 |
|
|
3001 |
//if there was a text declaration, call next() it will be taken care.
|
|
3002 |
if(fScannerState == SCANNER_STATE_TEXT_DECL){
|
|
3003 |
fLastSectionWasEntityReference = true ;
|
|
3004 |
continue;
|
|
3005 |
}
|
|
3006 |
|
|
3007 |
if(fScannerState == SCANNER_STATE_REFERENCE){
|
|
3008 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
3009 |
if (fReplaceEntityReferences && fEntityStore.isDeclaredEntity(fCurrentEntityName)) {
|
|
3010 |
// Skip the entity reference, we don't care
|
|
3011 |
continue;
|
|
3012 |
}
|
|
3013 |
return XMLEvent.ENTITY_REFERENCE;
|
|
3014 |
}
|
|
3015 |
}
|
|
3016 |
//Wether it was character reference, entity reference or built-in entity
|
|
3017 |
//set the next possible state to SCANNER_STATE_CONTENT
|
|
3018 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
3019 |
fLastSectionWasEntityReference = true ;
|
|
3020 |
continue;
|
|
3021 |
}
|
|
3022 |
|
|
3023 |
case SCANNER_STATE_TEXT_DECL: {
|
|
3024 |
// scan text decl
|
|
3025 |
if (fEntityScanner.skipString("<?xml")) {
|
|
3026 |
fMarkupDepth++;
|
|
3027 |
// NOTE: special case where entity starts with a PI
|
|
3028 |
// whose name starts with "xml" (e.g. "xmlfoo")
|
|
3029 |
if (isValidNameChar(fEntityScanner.peekChar())) {
|
|
3030 |
fStringBuffer.clear();
|
|
3031 |
fStringBuffer.append("xml");
|
|
3032 |
|
|
3033 |
if (fNamespaces) {
|
|
3034 |
while (isValidNCName(fEntityScanner.peekChar())) {
|
|
3035 |
fStringBuffer.append((char)fEntityScanner.scanChar());
|
|
3036 |
}
|
|
3037 |
} else {
|
|
3038 |
while (isValidNameChar(fEntityScanner.peekChar())) {
|
|
3039 |
fStringBuffer.append((char)fEntityScanner.scanChar());
|
|
3040 |
}
|
|
3041 |
}
|
|
3042 |
String target = fSymbolTable.addSymbol(fStringBuffer.ch, fStringBuffer.offset, fStringBuffer.length);
|
|
3043 |
fContentBuffer.clear();
|
|
3044 |
scanPIData(target, fContentBuffer);
|
|
3045 |
}
|
|
3046 |
|
|
3047 |
// standard text declaration
|
|
3048 |
else {
|
|
3049 |
//xxx: this function gives callback
|
|
3050 |
scanXMLDeclOrTextDecl(true);
|
|
3051 |
}
|
|
3052 |
}
|
|
3053 |
// now that we've straightened out the readers, we can read in chunks:
|
|
3054 |
fEntityManager.fCurrentEntity.mayReadChunks = true;
|
|
3055 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
3056 |
//xxx: we don't return any state, so how do we get to know about TEXT declarations.
|
|
3057 |
//it seems we have to careful when to allow function issue a callback
|
|
3058 |
//and when to allow adapter issue a callback.
|
|
3059 |
continue;
|
|
3060 |
}
|
|
3061 |
|
|
3062 |
|
|
3063 |
case SCANNER_STATE_ROOT_ELEMENT: {
|
|
3064 |
if (scanRootElementHook()) {
|
|
3065 |
fEmptyElement = true;
|
|
3066 |
//rest would be taken care by fTrailingMiscDriver set by scanRootElementHook
|
|
3067 |
return XMLEvent.START_ELEMENT;
|
|
3068 |
}
|
|
3069 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
3070 |
return XMLEvent.START_ELEMENT ;
|
|
3071 |
}
|
|
3072 |
case SCANNER_STATE_CHAR_REFERENCE : {
|
|
3073 |
fContentBuffer.clear();
|
|
3074 |
scanCharReferenceValue(fContentBuffer, null);
|
|
3075 |
fMarkupDepth--;
|
|
3076 |
setScannerState(SCANNER_STATE_CONTENT);
|
|
3077 |
return XMLEvent.CHARACTERS;
|
|
3078 |
}
|
|
3079 |
default:
|
|
3080 |
throw new XNIException("Scanner State " + fScannerState + " not Recognized ");
|
|
3081 |
|
|
3082 |
}//switch
|
|
3083 |
}
|
|
3084 |
// premature end of file
|
|
3085 |
catch (EOFException e) {
|
|
3086 |
endOfFileHook(e);
|
|
3087 |
return -1;
|
|
3088 |
}
|
|
3089 |
} //while loop
|
|
3090 |
}//next
|
|
3091 |
|
|
3092 |
|
|
3093 |
//
|
|
3094 |
// Protected methods
|
|
3095 |
//
|
|
3096 |
|
|
3097 |
// hooks
|
|
3098 |
|
|
3099 |
// NOTE: These hook methods are added so that the full document
|
|
3100 |
// scanner can share the majority of code with this class.
|
|
3101 |
|
|
3102 |
/**
|
|
3103 |
* Scan for DOCTYPE hook. This method is a hook for subclasses
|
|
3104 |
* to add code to handle scanning for a the "DOCTYPE" string
|
|
3105 |
* after the string "<!" has been scanned.
|
|
3106 |
*
|
|
3107 |
* @return True if the "DOCTYPE" was scanned; false if "DOCTYPE"
|
|
3108 |
* was not scanned.
|
|
3109 |
*/
|
|
3110 |
protected boolean scanForDoctypeHook()
|
|
3111 |
throws IOException, XNIException {
|
|
3112 |
return false;
|
|
3113 |
} // scanForDoctypeHook():boolean
|
|
3114 |
|
|
3115 |
/**
|
|
3116 |
* Element depth iz zero. This methos is a hook for subclasses
|
|
3117 |
* to add code to handle when the element depth hits zero. When
|
|
3118 |
* scanning a document fragment, an element depth of zero is
|
|
3119 |
* normal. However, when scanning a full XML document, the
|
|
3120 |
* scanner must handle the trailing miscellanous section of
|
|
3121 |
* the document after the end of the document's root element.
|
|
3122 |
*
|
|
3123 |
* @return True if the caller should stop and return true which
|
|
3124 |
* allows the scanner to switch to a new scanning
|
|
3125 |
* driver. A return value of false indicates that
|
|
3126 |
* the content driver should continue as normal.
|
|
3127 |
*/
|
|
3128 |
protected boolean elementDepthIsZeroHook()
|
|
3129 |
throws IOException, XNIException {
|
|
3130 |
return false;
|
|
3131 |
} // elementDepthIsZeroHook():boolean
|
|
3132 |
|
|
3133 |
/**
|
|
3134 |
* Scan for root element hook. This method is a hook for
|
|
3135 |
* subclasses to add code that handles scanning for the root
|
|
3136 |
* element. When scanning a document fragment, there is no
|
|
3137 |
* "root" element. However, when scanning a full XML document,
|
|
3138 |
* the scanner must handle the root element specially.
|
|
3139 |
*
|
|
3140 |
* @return True if the caller should stop and return true which
|
|
3141 |
* allows the scanner to switch to a new scanning
|
|
3142 |
* driver. A return value of false indicates that
|
|
3143 |
* the content driver should continue as normal.
|
|
3144 |
*/
|
|
3145 |
protected boolean scanRootElementHook()
|
|
3146 |
throws IOException, XNIException {
|
|
3147 |
return false;
|
|
3148 |
} // scanRootElementHook():boolean
|
|
3149 |
|
|
3150 |
/**
|
|
3151 |
* End of file hook. This method is a hook for subclasses to
|
|
3152 |
* add code that handles the end of file. The end of file in
|
|
3153 |
* a document fragment is OK if the markup depth is zero.
|
|
3154 |
* However, when scanning a full XML document, an end of file
|
|
3155 |
* is always premature.
|
|
3156 |
*/
|
|
3157 |
protected void endOfFileHook(EOFException e)
|
|
3158 |
throws IOException, XNIException {
|
|
3159 |
|
|
3160 |
// NOTE: An end of file is only only an error if we were
|
|
3161 |
// in the middle of scanning some markup. -Ac
|
|
3162 |
if (fMarkupDepth != 0) {
|
|
3163 |
reportFatalError("PrematureEOF", null);
|
|
3164 |
}
|
|
3165 |
|
|
3166 |
} // endOfFileHook()
|
|
3167 |
|
|
3168 |
} // class FragmentContentDriver
|
|
3169 |
|
|
3170 |
static void pr(String str) {
|
|
3171 |
System.out.println(str) ;
|
|
3172 |
}
|
|
3173 |
|
|
3174 |
protected boolean fUsebuffer ;
|
|
3175 |
|
|
3176 |
/** this function gets an XMLString (which is used to store the attribute value) from the special pool
|
|
3177 |
* maintained for attributes.
|
|
3178 |
* fAttributeCacheUsedCount tracks the number of attributes that has been consumed from the pool.
|
|
3179 |
* if all the attributes has been consumed, it adds a new XMLString inthe pool and returns the same
|
|
3180 |
* XMLString.
|
|
3181 |
*
|
|
3182 |
* @return XMLString XMLString used to store an attribute value.
|
|
3183 |
*/
|
|
3184 |
|
|
3185 |
protected XMLString getString(){
|
|
3186 |
if(fAttributeCacheUsedCount < initialCacheCount || fAttributeCacheUsedCount < attributeValueCache.size()){
|
|
3187 |
return (XMLString)attributeValueCache.get(fAttributeCacheUsedCount++);
|
|
3188 |
} else{
|
|
3189 |
XMLString str = new XMLString();
|
|
3190 |
fAttributeCacheUsedCount++;
|
|
3191 |
attributeValueCache.add(str);
|
|
3192 |
return str;
|
|
3193 |
}
|
|
3194 |
}
|
|
3195 |
|
|
3196 |
/**
|
|
3197 |
* Implements XMLBufferListener interface.
|
|
3198 |
*/
|
|
3199 |
|
|
3200 |
public void refresh(){
|
|
3201 |
refresh(0);
|
|
3202 |
}
|
|
3203 |
|
|
3204 |
/**
|
|
3205 |
* receives callbacks from {@link XMLEntityReader } when buffer
|
|
3206 |
* is being changed.
|
|
3207 |
* @param refreshPosition
|
|
3208 |
*/
|
|
3209 |
public void refresh(int refreshPosition){
|
|
3210 |
//If you are reading attributes and you got a callback
|
|
3211 |
//cache available attributes.
|
|
3212 |
if(fReadingAttributes){
|
|
3213 |
fAttributes.refresh();
|
|
3214 |
}
|
|
3215 |
if(fScannerState == SCANNER_STATE_CHARACTER_DATA){
|
|
3216 |
//since fTempString directly matches to the underlying main buffer
|
|
3217 |
//store the data into buffer
|
|
3218 |
fContentBuffer.append(fTempString);
|
|
3219 |
//clear the XMLString so that data can't be added again.
|
|
3220 |
fTempString.length = 0;
|
|
3221 |
fUsebuffer = true;
|
|
3222 |
}
|
|
3223 |
}
|
|
3224 |
|
|
3225 |
} // class XMLDocumentFragmentScannerImpl
|