author | joehw |
Wed, 08 May 2013 23:38:03 -0700 | |
changeset 17534 | 21dc0b2762da |
parent 14939 | 2e992d2acc8b |
child 18890 | 25bdeca3173b |
child 20964 | a5cd729f176d |
permissions | -rw-r--r-- |
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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.utils.SecuritySupport; |
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import com.sun.org.apache.xerces.internal.xni.NamespaceContext; |
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import com.sun.xml.internal.stream.Entity; |
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import javax.xml.XMLConstants; |
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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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/** Feature identifier: standard uri conformant */ |
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protected static final String STANDARD_URI_CONFORMANT = |
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Constants.XERCES_FEATURE_PREFIX +Constants.STANDARD_URI_CONFORMANT_FEATURE; |
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/** property identifier: access external dtd. */ |
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protected static final String ACCESS_EXTERNAL_DTD = XMLConstants.ACCESS_EXTERNAL_DTD; |
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/** access external dtd: file protocol |
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* For DOM/SAX, the secure feature is set to true by default |
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*/ |
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final static String EXTERNAL_ACCESS_DEFAULT = Constants.EXTERNAL_ACCESS_DEFAULT; |
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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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ACCESS_EXTERNAL_DTD |
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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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EXTERNAL_ACCESS_DEFAULT |
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}; |
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14939
2e992d2acc8b
8003260: [findbug] some fields should be package protected
joehw
parents:
14246
diff
changeset
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private static final char [] cdata = {'[','C','D','A','T','A','['}; |
2e992d2acc8b
8003260: [findbug] some fields should be package protected
joehw
parents:
14246
diff
changeset
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private static final char [] endTag = {'<','/'}; |
2e992d2acc8b
8003260: [findbug] some fields should be package protected
joehw
parents:
14246
diff
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2e992d2acc8b
8003260: [findbug] some fields should be package protected
joehw
parents:
14246
diff
changeset
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//this variable is also used by XMLDocumentScannerImpl in the same package |
2e992d2acc8b
8003260: [findbug] some fields should be package protected
joehw
parents:
14246
diff
changeset
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static final char [] xmlDecl = {'<','?','x','m','l'}; |
2e992d2acc8b
8003260: [findbug] some fields should be package protected
joehw
parents:
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changeset
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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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7dfa5735cbc2
7157610: NullPointerException occurs when parsing XML doc
joehw
parents:
12458
diff
changeset
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protected boolean fSupportDTD = true; |
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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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13061
7dfa5735cbc2
7157610: NullPointerException occurs when parsing XML doc
joehw
parents:
12458
diff
changeset
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/** Xerces Feature: Disallow doctype declaration. */ |
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protected boolean fDisallowDoctype = false; |
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/** |
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* comma-delimited list of protocols that are allowed for the purpose |
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* of accessing external dtd or entity references |
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*/ |
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protected String fAccessExternalDTD = EXTERNAL_ACCESS_DEFAULT; |
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/** |
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* standard uri conformant (strict uri). |
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* http://apache.org/xml/features/standard-uri-conformant |
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*/ |
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protected boolean fStrictURI; |
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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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||
447 |
// keep dispatching "events" |
|
448 |
fEntityManager.setEntityHandler(this); |
|
449 |
//System.out.println(" get Document Handler in NSDocumentHandler " + fDocumentHandler ); |
|
450 |
||
451 |
int event = next(); |
|
452 |
do { |
|
453 |
switch (event) { |
|
454 |
case XMLStreamConstants.START_DOCUMENT : |
|
455 |
//fDocumentHandler.startDocument(fEntityManager.getEntityScanner(),fEntityManager.getEntityScanner().getVersion(),fNamespaceContext,null);// not able to get |
|
456 |
break; |
|
457 |
case XMLStreamConstants.START_ELEMENT : |
|
458 |
//System.out.println(" in scann element"); |
|
459 |
//fDocumentHandler.startElement(getElementQName(),fAttributes,null); |
|
460 |
break; |
|
461 |
case XMLStreamConstants.CHARACTERS : |
|
462 |
fDocumentHandler.characters(getCharacterData(),null); |
|
463 |
break; |
|
464 |
case XMLStreamConstants.SPACE: |
|
465 |
//check if getCharacterData() is the right function to retrieve ignorableWhitespace information. |
|
466 |
//System.out.println("in the space"); |
|
467 |
//fDocumentHandler.ignorableWhitespace(getCharacterData(), null); |
|
468 |
break; |
|
469 |
case XMLStreamConstants.ENTITY_REFERENCE : |
|
470 |
//entity reference callback are given in startEntity |
|
471 |
break; |
|
472 |
case XMLStreamConstants.PROCESSING_INSTRUCTION : |
|
473 |
fDocumentHandler.processingInstruction(getPITarget(),getPIData(),null); |
|
474 |
break; |
|
475 |
case XMLStreamConstants.COMMENT : |
|
476 |
//System.out.println(" in COMMENT of the XMLNSDocumentScannerImpl"); |
|
477 |
fDocumentHandler.comment(getCharacterData(),null); |
|
478 |
break; |
|
479 |
case XMLStreamConstants.DTD : |
|
480 |
//all DTD related callbacks are handled in DTDScanner. |
|
481 |
//1. Stax doesn't define DTD states as it does for XML Document. |
|
482 |
//therefore we don't need to take care of anything here. So Just break; |
|
483 |
break; |
|
484 |
case XMLStreamConstants.CDATA: |
|
485 |
fDocumentHandler.startCDATA(null); |
|
486 |
//xxx: check if CDATA values comes from getCharacterData() function |
|
487 |
fDocumentHandler.characters(getCharacterData(),null); |
|
488 |
fDocumentHandler.endCDATA(null); |
|
489 |
//System.out.println(" in CDATA of the XMLNSDocumentScannerImpl"); |
|
490 |
break; |
|
491 |
case XMLStreamConstants.NOTATION_DECLARATION : |
|
492 |
break; |
|
493 |
case XMLStreamConstants.ENTITY_DECLARATION : |
|
494 |
break; |
|
495 |
case XMLStreamConstants.NAMESPACE : |
|
496 |
break; |
|
497 |
case XMLStreamConstants.ATTRIBUTE : |
|
498 |
break; |
|
499 |
case XMLStreamConstants.END_ELEMENT : |
|
500 |
//do not give callback here. |
|
501 |
//this callback is given in scanEndElement function. |
|
502 |
//fDocumentHandler.endElement(getElementQName(),null); |
|
503 |
break; |
|
504 |
default : |
|
505 |
throw new InternalError("processing event: " + event); |
|
506 |
||
507 |
} |
|
508 |
//System.out.println("here in before calling next"); |
|
509 |
event = next(); |
|
510 |
//System.out.println("here in after calling next"); |
|
511 |
} while (event!=XMLStreamConstants.END_DOCUMENT && complete); |
|
512 |
||
513 |
if(event == XMLStreamConstants.END_DOCUMENT) { |
|
514 |
fDocumentHandler.endDocument(null); |
|
515 |
return false; |
|
516 |
} |
|
517 |
||
518 |
return true; |
|
519 |
||
520 |
} // scanDocument(boolean):boolean |
|
521 |
||
522 |
||
523 |
||
524 |
public com.sun.org.apache.xerces.internal.xni.QName getElementQName(){ |
|
525 |
if(fScannerLastState == XMLEvent.END_ELEMENT){ |
|
526 |
fElementQName.setValues(fElementStack.getLastPoppedElement()); |
|
527 |
} |
|
528 |
return fElementQName ; |
|
529 |
} |
|
530 |
||
531 |
/** return the next state on the input |
|
532 |
* @return int |
|
533 |
*/ |
|
534 |
||
535 |
public int next() throws IOException, XNIException { |
|
536 |
return fDriver.next(); |
|
537 |
} |
|
538 |
||
539 |
// |
|
540 |
// XMLComponent methods |
|
541 |
// |
|
542 |
||
543 |
/** |
|
544 |
* Resets the component. The component can query the component manager |
|
545 |
* about any features and properties that affect the operation of the |
|
546 |
* component. |
|
547 |
* |
|
548 |
* @param componentManager The component manager. |
|
549 |
* |
|
550 |
* @throws SAXException Thrown by component on initialization error. |
|
551 |
* For example, if a feature or property is |
|
552 |
* required for the operation of the component, the |
|
553 |
* component manager may throw a |
|
554 |
* SAXNotRecognizedException or a |
|
555 |
* SAXNotSupportedException. |
|
556 |
*/ |
|
557 |
||
558 |
public void reset(XMLComponentManager componentManager) |
|
559 |
throws XMLConfigurationException { |
|
560 |
||
561 |
super.reset(componentManager); |
|
562 |
||
563 |
// other settings |
|
564 |
// fDocumentSystemId = null; |
|
565 |
||
566 |
// sax features |
|
567 |
//fAttributes.setNamespaces(fNamespaces); |
|
568 |
||
569 |
// xerces features |
|
570 |
fReportCdataEvent = componentManager.getFeature(Constants.STAX_REPORT_CDATA_EVENT, true); |
|
571 |
||
572 |
fSecurityManager = (SecurityManager)componentManager.getProperty(Constants.SECURITY_MANAGER, null); |
|
573 |
fElementAttributeLimit = (fSecurityManager != null)?fSecurityManager.getElementAttrLimit():0; |
|
574 |
||
575 |
fNotifyBuiltInRefs = componentManager.getFeature(NOTIFY_BUILTIN_REFS, false); |
|
576 |
||
577 |
Object resolver = componentManager.getProperty(ENTITY_RESOLVER, null); |
|
578 |
fExternalSubsetResolver = (resolver instanceof ExternalSubsetResolver) ? |
|
579 |
(ExternalSubsetResolver) resolver : null; |
|
580 |
||
581 |
// initialize vars |
|
582 |
fMarkupDepth = 0; |
|
583 |
fCurrentElement = null; |
|
584 |
fElementStack.clear(); |
|
585 |
fHasExternalDTD = false; |
|
586 |
fStandaloneSet = false; |
|
587 |
fStandalone = false; |
|
588 |
fInScanContent = false; |
|
589 |
//skipping algorithm |
|
590 |
fShouldSkip = false; |
|
591 |
fAdd = false; |
|
592 |
fSkip = false; |
|
593 |
||
594 |
//attribute |
|
595 |
fReadingAttributes = false; |
|
596 |
//xxx: external entities are supported in Xerces |
|
597 |
// it would be good to define feature for this case |
|
598 |
fSupportExternalEntities = true; |
|
17534 | 599 |
fSupportExternalEntities = true; |
600 |
fSupportExternalEntities = true; |
|
601 |
fSupportExternalEntities = true; |
|
12005 | 602 |
fReplaceEntityReferences = true; |
603 |
fIsCoalesce = false; |
|
604 |
||
605 |
// setup Driver |
|
606 |
setScannerState(SCANNER_STATE_CONTENT); |
|
607 |
setDriver(fContentDriver); |
|
608 |
fEntityStore = fEntityManager.getEntityStore(); |
|
609 |
||
610 |
dtdGrammarUtil = null; |
|
611 |
||
17534 | 612 |
// JAXP 1.5 features and properties |
613 |
fAccessExternalDTD = (String) componentManager.getProperty(ACCESS_EXTERNAL_DTD, EXTERNAL_ACCESS_DEFAULT); |
|
614 |
fStrictURI = componentManager.getFeature(STANDARD_URI_CONFORMANT, false); |
|
12005 | 615 |
|
616 |
//fEntityManager.test(); |
|
617 |
} // reset(XMLComponentManager) |
|
618 |
||
619 |
||
620 |
public void reset(PropertyManager propertyManager){ |
|
621 |
||
622 |
super.reset(propertyManager); |
|
623 |
||
624 |
// other settings |
|
625 |
// fDocumentSystemId = null; |
|
626 |
fNamespaces = ((Boolean)propertyManager.getProperty(XMLInputFactory.IS_NAMESPACE_AWARE)).booleanValue(); |
|
627 |
fNotifyBuiltInRefs = false ; |
|
628 |
||
629 |
// initialize vars |
|
630 |
fMarkupDepth = 0; |
|
631 |
fCurrentElement = null; |
|
632 |
fShouldSkip = false; |
|
633 |
fAdd = false; |
|
634 |
fSkip = false; |
|
635 |
fElementStack.clear(); |
|
636 |
//fElementStack2.clear(); |
|
637 |
fHasExternalDTD = false; |
|
638 |
fStandaloneSet = false; |
|
639 |
fStandalone = false; |
|
640 |
//fReplaceEntityReferences = true; |
|
641 |
//fSupportExternalEntities = true; |
|
642 |
Boolean bo = (Boolean)propertyManager.getProperty(XMLInputFactoryImpl.IS_REPLACING_ENTITY_REFERENCES); |
|
643 |
fReplaceEntityReferences = bo.booleanValue(); |
|
644 |
bo = (Boolean)propertyManager.getProperty(XMLInputFactoryImpl.IS_SUPPORTING_EXTERNAL_ENTITIES); |
|
645 |
fSupportExternalEntities = bo.booleanValue(); |
|
646 |
Boolean cdata = (Boolean)propertyManager.getProperty(Constants.ZEPHYR_PROPERTY_PREFIX + Constants.STAX_REPORT_CDATA_EVENT) ; |
|
647 |
if(cdata != null) |
|
648 |
fReportCdataEvent = cdata.booleanValue() ; |
|
649 |
Boolean coalesce = (Boolean)propertyManager.getProperty(XMLInputFactory.IS_COALESCING) ; |
|
650 |
if(coalesce != null) |
|
651 |
fIsCoalesce = coalesce.booleanValue(); |
|
652 |
fReportCdataEvent = fIsCoalesce ? false : (fReportCdataEvent && true) ; |
|
653 |
//if fIsCoalesce is set to true, set the value of fReplaceEntityReferences to true, |
|
654 |
//if fIsCoalesce is set to false, take the value of fReplaceEntityReferences as set by application |
|
655 |
fReplaceEntityReferences = fIsCoalesce ? true : fReplaceEntityReferences; |
|
656 |
// setup Driver |
|
657 |
//we dont need to do this -- nb. |
|
658 |
//setScannerState(SCANNER_STATE_CONTENT); |
|
659 |
//setDriver(fContentDriver); |
|
660 |
fEntityStore = fEntityManager.getEntityStore(); |
|
661 |
//fEntityManager.test(); |
|
662 |
||
663 |
dtdGrammarUtil = null; |
|
664 |
||
17534 | 665 |
// Oracle jdk feature |
666 |
fAccessExternalDTD = (String) propertyManager.getProperty(ACCESS_EXTERNAL_DTD); |
|
667 |
||
12005 | 668 |
} // reset(XMLComponentManager) |
669 |
||
670 |
/** |
|
671 |
* Returns a list of feature identifiers that are recognized by |
|
672 |
* this component. This method may return null if no features |
|
673 |
* are recognized by this component. |
|
674 |
*/ |
|
675 |
public String[] getRecognizedFeatures() { |
|
676 |
return (String[])(RECOGNIZED_FEATURES.clone()); |
|
677 |
} // getRecognizedFeatures():String[] |
|
678 |
||
679 |
/** |
|
680 |
* Sets the state of a feature. This method is called by the component |
|
681 |
* manager any time after reset when a feature changes state. |
|
682 |
* <p> |
|
683 |
* <strong>Note:</strong> Components should silently ignore features |
|
684 |
* that do not affect the operation of the component. |
|
685 |
* |
|
686 |
* @param featureId The feature identifier. |
|
687 |
* @param state The state of the feature. |
|
688 |
* |
|
689 |
* @throws SAXNotRecognizedException The component should not throw |
|
690 |
* this exception. |
|
691 |
* @throws SAXNotSupportedException The component should not throw |
|
692 |
* this exception. |
|
693 |
*/ |
|
694 |
public void setFeature(String featureId, boolean state) |
|
695 |
throws XMLConfigurationException { |
|
696 |
||
697 |
super.setFeature(featureId, state); |
|
698 |
||
699 |
// Xerces properties |
|
700 |
if (featureId.startsWith(Constants.XERCES_FEATURE_PREFIX)) { |
|
701 |
String feature = featureId.substring(Constants.XERCES_FEATURE_PREFIX.length()); |
|
702 |
if (feature.equals(Constants.NOTIFY_BUILTIN_REFS_FEATURE)) { |
|
703 |
fNotifyBuiltInRefs = state; |
|
704 |
} |
|
705 |
} |
|
706 |
||
707 |
} // setFeature(String,boolean) |
|
708 |
||
709 |
/** |
|
710 |
* Returns a list of property identifiers that are recognized by |
|
711 |
* this component. This method may return null if no properties |
|
712 |
* are recognized by this component. |
|
713 |
*/ |
|
714 |
public String[] getRecognizedProperties() { |
|
715 |
return (String[])(RECOGNIZED_PROPERTIES.clone()); |
|
716 |
} // getRecognizedProperties():String[] |
|
717 |
||
718 |
/** |
|
719 |
* Sets the value of a property. This method is called by the component |
|
720 |
* manager any time after reset when a property changes value. |
|
721 |
* <p> |
|
722 |
* <strong>Note:</strong> Components should silently ignore properties |
|
723 |
* that do not affect the operation of the component. |
|
724 |
* |
|
725 |
* @param propertyId The property identifier. |
|
726 |
* @param value The value of the property. |
|
727 |
* |
|
728 |
* @throws SAXNotRecognizedException The component should not throw |
|
729 |
* this exception. |
|
730 |
* @throws SAXNotSupportedException The component should not throw |
|
731 |
* this exception. |
|
732 |
*/ |
|
733 |
public void setProperty(String propertyId, Object value) |
|
734 |
throws XMLConfigurationException { |
|
735 |
||
736 |
super.setProperty(propertyId, value); |
|
737 |
||
738 |
// Xerces properties |
|
739 |
if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) { |
|
740 |
final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length(); |
|
741 |
if (suffixLength == Constants.ENTITY_MANAGER_PROPERTY.length() && |
|
742 |
propertyId.endsWith(Constants.ENTITY_MANAGER_PROPERTY)) { |
|
743 |
fEntityManager = (XMLEntityManager)value; |
|
744 |
return; |
|
745 |
} |
|
746 |
if (suffixLength == Constants.ENTITY_RESOLVER_PROPERTY.length() && |
|
747 |
propertyId.endsWith(Constants.ENTITY_RESOLVER_PROPERTY)) { |
|
748 |
fExternalSubsetResolver = (value instanceof ExternalSubsetResolver) ? |
|
749 |
(ExternalSubsetResolver) value : null; |
|
750 |
return; |
|
751 |
} |
|
752 |
} |
|
753 |
||
754 |
||
755 |
// Xerces properties |
|
756 |
if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) { |
|
757 |
String property = propertyId.substring(Constants.XERCES_PROPERTY_PREFIX.length()); |
|
758 |
if (property.equals(Constants.ENTITY_MANAGER_PROPERTY)) { |
|
759 |
fEntityManager = (XMLEntityManager)value; |
|
760 |
} |
|
761 |
return; |
|
762 |
} |
|
763 |
||
17534 | 764 |
//JAXP 1.5 properties |
765 |
if (propertyId.startsWith(Constants.JAXPAPI_PROPERTY_PREFIX)) { |
|
766 |
if (propertyId.equals(ACCESS_EXTERNAL_DTD)) |
|
767 |
{ |
|
768 |
fAccessExternalDTD = (String)value; |
|
769 |
} |
|
770 |
} |
|
771 |
||
12005 | 772 |
} // setProperty(String,Object) |
773 |
||
774 |
/** |
|
775 |
* Returns the default state for a feature, or null if this |
|
776 |
* component does not want to report a default value for this |
|
777 |
* feature. |
|
778 |
* |
|
779 |
* @param featureId The feature identifier. |
|
780 |
* |
|
781 |
* @since Xerces 2.2.0 |
|
782 |
*/ |
|
783 |
public Boolean getFeatureDefault(String featureId) { |
|
784 |
for (int i = 0; i < RECOGNIZED_FEATURES.length; i++) { |
|
785 |
if (RECOGNIZED_FEATURES[i].equals(featureId)) { |
|
786 |
return FEATURE_DEFAULTS[i]; |
|
787 |
} |
|
788 |
} |
|
789 |
return null; |
|
790 |
} // getFeatureDefault(String):Boolean |
|
791 |
||
792 |
/** |
|
793 |
* Returns the default state for a property, or null if this |
|
794 |
* component does not want to report a default value for this |
|
795 |
* property. |
|
796 |
* |
|
797 |
* @param propertyId The property identifier. |
|
798 |
* |
|
799 |
* @since Xerces 2.2.0 |
|
800 |
*/ |
|
801 |
public Object getPropertyDefault(String propertyId) { |
|
802 |
for (int i = 0; i < RECOGNIZED_PROPERTIES.length; i++) { |
|
803 |
if (RECOGNIZED_PROPERTIES[i].equals(propertyId)) { |
|
804 |
return PROPERTY_DEFAULTS[i]; |
|
805 |
} |
|
806 |
} |
|
807 |
return null; |
|
808 |
} // getPropertyDefault(String):Object |
|
809 |
||
810 |
// |
|
811 |
// XMLDocumentSource methods |
|
812 |
// |
|
813 |
||
814 |
/** |
|
815 |
* setDocumentHandler |
|
816 |
* |
|
817 |
* @param documentHandler |
|
818 |
*/ |
|
819 |
public void setDocumentHandler(XMLDocumentHandler documentHandler) { |
|
820 |
fDocumentHandler = documentHandler; |
|
821 |
//System.out.println(" In Set DOCUMENT HANDLER" + fDocumentHandler + " scanner =" + this); |
|
822 |
} // setDocumentHandler(XMLDocumentHandler) |
|
823 |
||
824 |
||
825 |
/** Returns the document handler */ |
|
826 |
public XMLDocumentHandler getDocumentHandler(){ |
|
827 |
return fDocumentHandler; |
|
828 |
} |
|
829 |
||
830 |
// |
|
831 |
// XMLEntityHandler methods |
|
832 |
// |
|
833 |
||
834 |
/** |
|
835 |
* This method notifies of the start of an entity. The DTD has the |
|
836 |
* pseudo-name of "[dtd]" parameter entity names start with '%'; and |
|
837 |
* general entities are just specified by their name. |
|
838 |
* |
|
839 |
* @param name The name of the entity. |
|
840 |
* @param identifier The resource identifier. |
|
841 |
* @param encoding The auto-detected IANA encoding name of the entity |
|
842 |
* stream. This value will be null in those situations |
|
843 |
* where the entity encoding is not auto-detected (e.g. |
|
844 |
* internal entities or a document entity that is |
|
845 |
* parsed from a java.io.Reader). |
|
14246 | 846 |
* @param augs Additional information that may include infoset augmentations |
12005 | 847 |
* |
848 |
* @throws XNIException Thrown by handler to signal an error. |
|
849 |
*/ |
|
850 |
public void startEntity(String name, |
|
851 |
XMLResourceIdentifier identifier, |
|
852 |
String encoding, Augmentations augs) throws XNIException { |
|
853 |
||
854 |
// keep track of this entity before fEntityDepth is increased |
|
855 |
if (fEntityDepth == fEntityStack.length) { |
|
856 |
int[] entityarray = new int[fEntityStack.length * 2]; |
|
857 |
System.arraycopy(fEntityStack, 0, entityarray, 0, fEntityStack.length); |
|
858 |
fEntityStack = entityarray; |
|
859 |
} |
|
860 |
fEntityStack[fEntityDepth] = fMarkupDepth; |
|
861 |
||
862 |
super.startEntity(name, identifier, encoding, augs); |
|
863 |
||
864 |
// WFC: entity declared in external subset in standalone doc |
|
865 |
if(fStandalone && fEntityStore.isEntityDeclInExternalSubset(name)) { |
|
866 |
reportFatalError("MSG_REFERENCE_TO_EXTERNALLY_DECLARED_ENTITY_WHEN_STANDALONE", |
|
867 |
new Object[]{name}); |
|
868 |
} |
|
869 |
||
870 |
/** we are not calling the handlers yet.. */ |
|
871 |
// call handler |
|
872 |
if (fDocumentHandler != null && !fScanningAttribute) { |
|
873 |
if (!name.equals("[xml]")) { |
|
14246 | 874 |
fDocumentHandler.startGeneralEntity(name, identifier, encoding, augs); |
12005 | 875 |
} |
876 |
} |
|
877 |
||
878 |
} // startEntity(String,XMLResourceIdentifier,String) |
|
879 |
||
880 |
/** |
|
881 |
* This method notifies the end of an entity. The DTD has the pseudo-name |
|
882 |
* of "[dtd]" parameter entity names start with '%'; and general entities |
|
883 |
* are just specified by their name. |
|
884 |
* |
|
885 |
* @param name The name of the entity. |
|
14246 | 886 |
* @param augs Additional information that may include infoset augmentations |
12005 | 887 |
* |
888 |
* @throws XNIException Thrown by handler to signal an error. |
|
889 |
*/ |
|
890 |
public void endEntity(String name, Augmentations augs) throws IOException, XNIException { |
|
891 |
||
892 |
/** |
|
893 |
* // flush possible pending output buffer - see scanContent |
|
894 |
* if (fInScanContent && fStringBuffer.length != 0 |
|
895 |
* && fDocumentHandler != null) { |
|
896 |
* fDocumentHandler.characters(fStringBuffer, null); |
|
897 |
* fStringBuffer.length = 0; // make sure we know it's been flushed |
|
898 |
* } |
|
899 |
*/ |
|
900 |
super.endEntity(name, augs); |
|
901 |
||
902 |
// make sure markup is properly balanced |
|
903 |
if (fMarkupDepth != fEntityStack[fEntityDepth]) { |
|
904 |
reportFatalError("MarkupEntityMismatch", null); |
|
905 |
} |
|
906 |
||
907 |
/**/ |
|
908 |
// call handler |
|
909 |
if (fDocumentHandler != null && !fScanningAttribute) { |
|
910 |
if (!name.equals("[xml]")) { |
|
14246 | 911 |
fDocumentHandler.endGeneralEntity(name, augs); |
12005 | 912 |
} |
913 |
} |
|
914 |
||
915 |
||
916 |
} // endEntity(String) |
|
917 |
||
918 |
// |
|
919 |
// Protected methods |
|
920 |
// |
|
921 |
||
922 |
// Driver factory methods |
|
923 |
||
924 |
/** Creates a content Driver. */ |
|
925 |
protected Driver createContentDriver() { |
|
926 |
return new FragmentContentDriver(); |
|
927 |
} // createContentDriver():Driver |
|
928 |
||
929 |
// scanning methods |
|
930 |
||
931 |
/** |
|
932 |
* Scans an XML or text declaration. |
|
933 |
* <p> |
|
934 |
* <pre> |
|
935 |
* [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>' |
|
936 |
* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' | " VersionNum ") |
|
937 |
* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'" ) |
|
938 |
* [81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')* |
|
939 |
* [32] SDDecl ::= S 'standalone' Eq (("'" ('yes' | 'no') "'") |
|
940 |
* | ('"' ('yes' | 'no') '"')) |
|
941 |
* |
|
942 |
* [77] TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>' |
|
943 |
* </pre> |
|
944 |
* |
|
945 |
* @param scanningTextDecl True if a text declaration is to |
|
946 |
* be scanned instead of an XML |
|
947 |
* declaration. |
|
948 |
*/ |
|
949 |
protected void scanXMLDeclOrTextDecl(boolean scanningTextDecl) |
|
950 |
throws IOException, XNIException { |
|
951 |
||
952 |
// scan decl |
|
953 |
super.scanXMLDeclOrTextDecl(scanningTextDecl, fStrings); |
|
954 |
fMarkupDepth--; |
|
955 |
||
956 |
// pseudo-attribute values |
|
957 |
String version = fStrings[0]; |
|
958 |
String encoding = fStrings[1]; |
|
959 |
String standalone = fStrings[2]; |
|
960 |
fDeclaredEncoding = encoding; |
|
961 |
// set standalone |
|
962 |
fStandaloneSet = standalone != null; |
|
963 |
fStandalone = fStandaloneSet && standalone.equals("yes"); |
|
964 |
///xxx see where its used.. this is not used anywhere. it may be useful for entity to store this information |
|
965 |
//but this information is only related with Document Entity. |
|
966 |
fEntityManager.setStandalone(fStandalone); |
|
967 |
||
968 |
||
969 |
// call handler |
|
970 |
if (fDocumentHandler != null) { |
|
971 |
if (scanningTextDecl) { |
|
972 |
fDocumentHandler.textDecl(version, encoding, null); |
|
973 |
} else { |
|
974 |
fDocumentHandler.xmlDecl(version, encoding, standalone, null); |
|
975 |
} |
|
976 |
} |
|
977 |
||
978 |
if(version != null){ |
|
979 |
fEntityScanner.setVersion(version); |
|
980 |
fEntityScanner.setXMLVersion(version); |
|
981 |
} |
|
982 |
// set encoding on reader, only if encoding was not specified by the application explicitly |
|
983 |
if (encoding != null && !fEntityScanner.getCurrentEntity().isEncodingExternallySpecified()) { |
|
984 |
fEntityScanner.setEncoding(encoding); |
|
985 |
} |
|
986 |
||
987 |
} // scanXMLDeclOrTextDecl(boolean) |
|
988 |
||
989 |
public String getPITarget(){ |
|
990 |
return fPITarget ; |
|
991 |
} |
|
992 |
||
993 |
public XMLStringBuffer getPIData(){ |
|
994 |
return fContentBuffer ; |
|
995 |
} |
|
996 |
||
997 |
//XXX: why not this function behave as per the state of the parser? |
|
998 |
public XMLString getCharacterData(){ |
|
999 |
if(fUsebuffer){ |
|
1000 |
return fContentBuffer ; |
|
1001 |
}else{ |
|
1002 |
return fTempString; |
|
1003 |
} |
|
1004 |
||
1005 |
} |
|
1006 |
||
1007 |
||
1008 |
/** |
|
1009 |
* Scans a processing data. This is needed to handle the situation |
|
1010 |
* where a document starts with a processing instruction whose |
|
1011 |
* target name <em>starts with</em> "xml". (e.g. xmlfoo) |
|
1012 |
* |
|
1013 |
* @param target The PI target |
|
1014 |
* @param data The XMLStringBuffer to fill in with the data |
|
1015 |
*/ |
|
1016 |
protected void scanPIData(String target, XMLStringBuffer data) |
|
1017 |
throws IOException, XNIException { |
|
1018 |
||
1019 |
super.scanPIData(target, data); |
|
1020 |
||
1021 |
//set the PI target and values |
|
1022 |
fPITarget = target ; |
|
1023 |
||
1024 |
fMarkupDepth--; |
|
1025 |
||
1026 |
} // scanPIData(String) |
|
1027 |
||
1028 |
/** |
|
1029 |
* Scans a comment. |
|
1030 |
* <p> |
|
1031 |
* <pre> |
|
1032 |
* [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->' |
|
1033 |
* </pre> |
|
1034 |
* <p> |
|
1035 |
* <strong>Note:</strong> Called after scanning past '<!--' |
|
1036 |
*/ |
|
1037 |
protected void scanComment() throws IOException, XNIException { |
|
1038 |
fContentBuffer.clear(); |
|
1039 |
scanComment(fContentBuffer); |
|
1040 |
//getTextCharacters can also be called for reading comments |
|
1041 |
fUsebuffer = true; |
|
1042 |
fMarkupDepth--; |
|
1043 |
||
1044 |
} // scanComment() |
|
1045 |
||
1046 |
//xxx value returned by this function may not remain valid if another event is scanned. |
|
1047 |
public String getComment(){ |
|
1048 |
return fContentBuffer.toString(); |
|
1049 |
} |
|
1050 |
||
1051 |
void addElement(String rawname){ |
|
1052 |
if(fElementPointer < ELEMENT_ARRAY_LENGTH){ |
|
1053 |
//storing element raw name in a linear list of array |
|
1054 |
fElementArray[fElementPointer] = rawname ; |
|
1055 |
//storing elemnetPointer for particular element depth |
|
1056 |
||
1057 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1058 |
StringBuffer sb = new StringBuffer() ; |
|
1059 |
sb.append(" Storing element information ") ; |
|
1060 |
sb.append(" fElementPointer = " + fElementPointer) ; |
|
1061 |
sb.append(" fElementRawname = " + fElementQName.rawname) ; |
|
1062 |
sb.append(" fElementStack.fDepth = " + fElementStack.fDepth); |
|
1063 |
System.out.println(sb.toString()) ; |
|
1064 |
} |
|
1065 |
||
1066 |
//store pointer information only when element depth is less MAX_DEPTH_LIMIT |
|
1067 |
if(fElementStack.fDepth < MAX_DEPTH_LIMIT){ |
|
1068 |
short column = storePointerForADepth(fElementPointer); |
|
1069 |
if(column > 0){ |
|
1070 |
short pointer = getElementPointer((short)fElementStack.fDepth, (short)(column - 1) ); |
|
1071 |
//identity comparison shouldn't take much time and we can rely on this |
|
1072 |
//since its guaranteed to have same object id for same string. |
|
1073 |
if(rawname == fElementArray[pointer]){ |
|
1074 |
fShouldSkip = true ; |
|
1075 |
fLastPointerLocation = pointer ; |
|
1076 |
//reset the things and return. |
|
1077 |
resetPointer((short)fElementStack.fDepth , column) ; |
|
1078 |
fElementArray[fElementPointer] = null ; |
|
1079 |
return ; |
|
1080 |
}else{ |
|
1081 |
fShouldSkip = false ; |
|
1082 |
} |
|
1083 |
} |
|
1084 |
} |
|
1085 |
fElementPointer++ ; |
|
1086 |
} |
|
1087 |
} |
|
1088 |
||
1089 |
||
1090 |
void resetPointer(short depth, short column){ |
|
1091 |
fPointerInfo[depth] [column] = (short)0; |
|
1092 |
} |
|
1093 |
||
1094 |
//returns column information at which pointer was stored. |
|
1095 |
short storePointerForADepth(short elementPointer){ |
|
1096 |
short depth = (short) fElementStack.fDepth ; |
|
1097 |
||
1098 |
//Stores element pointer locations at particular depth , only 4 pointer locations |
|
1099 |
//are stored at particular depth for now. |
|
1100 |
for(short i = 0 ; i < MAX_POINTER_AT_A_DEPTH ; i++){ |
|
1101 |
||
1102 |
if(canStore(depth, i)){ |
|
1103 |
fPointerInfo[depth][i] = elementPointer ; |
|
1104 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1105 |
StringBuffer sb = new StringBuffer() ; |
|
1106 |
sb.append(" Pointer information ") ; |
|
1107 |
sb.append(" fElementPointer = " + fElementPointer) ; |
|
1108 |
sb.append(" fElementStack.fDepth = " + fElementStack.fDepth); |
|
1109 |
sb.append(" column = " + i ) ; |
|
1110 |
System.out.println(sb.toString()) ; |
|
1111 |
} |
|
1112 |
return i; |
|
1113 |
} |
|
1114 |
//else |
|
1115 |
//pointer was not stored because we reached the limit |
|
1116 |
} |
|
1117 |
return -1 ; |
|
1118 |
} |
|
1119 |
||
1120 |
boolean canStore(short depth, short column){ |
|
1121 |
//colum = 0 , means first element at particular depth |
|
1122 |
//column = 1, means second element at particular depth |
|
1123 |
// calle should make sure that it doesn't call for value outside allowed co-ordinates |
|
1124 |
return fPointerInfo[depth][column] == 0 ? true : false ; |
|
1125 |
} |
|
1126 |
||
1127 |
||
1128 |
short getElementPointer(short depth, short column){ |
|
1129 |
//colum = 0 , means first element at particular depth |
|
1130 |
//column = 1, means second element at particular depth |
|
1131 |
// calle should make sure that it doesn't call for value outside allowed co-ordinates |
|
1132 |
return fPointerInfo[depth][column] ; |
|
1133 |
} |
|
1134 |
||
1135 |
//this function assumes that string passed is not null and skips |
|
1136 |
//the following string from the buffer this makes sure |
|
1137 |
boolean skipFromTheBuffer(String rawname) throws IOException{ |
|
1138 |
if(fEntityScanner.skipString(rawname)){ |
|
1139 |
char c = (char)fEntityScanner.peekChar() ; |
|
1140 |
//If the start element was completely skipped we should encounter either ' '(space), |
|
1141 |
//or '/' (in case of empty element) or '>' |
|
1142 |
if( c == ' ' || c == '/' || c == '>'){ |
|
1143 |
fElementRawname = rawname ; |
|
1144 |
return true ; |
|
1145 |
} else{ |
|
1146 |
return false; |
|
1147 |
} |
|
1148 |
} else |
|
1149 |
return false ; |
|
1150 |
} |
|
1151 |
||
1152 |
boolean skipQElement(String rawname) throws IOException{ |
|
1153 |
||
1154 |
final int c = fEntityScanner.getChar(rawname.length()); |
|
1155 |
//if this character is still valid element name -- this means string can't match |
|
1156 |
if(XMLChar.isName(c)){ |
|
1157 |
return false; |
|
1158 |
}else{ |
|
1159 |
return fEntityScanner.skipString(rawname); |
|
1160 |
} |
|
1161 |
} |
|
1162 |
||
1163 |
protected boolean skipElement() throws IOException { |
|
1164 |
||
1165 |
if(!fShouldSkip) return false ; |
|
1166 |
||
1167 |
if(fLastPointerLocation != 0){ |
|
1168 |
//Look at the next element stored in the array list.. we might just get a match. |
|
1169 |
String rawname = fElementArray[fLastPointerLocation + 1] ; |
|
1170 |
if(rawname != null && skipFromTheBuffer(rawname)){ |
|
1171 |
fLastPointerLocation++ ; |
|
1172 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1173 |
System.out.println("Element " + fElementRawname + " was SKIPPED at pointer location = " + fLastPointerLocation); |
|
1174 |
} |
|
1175 |
return true ; |
|
1176 |
} else{ |
|
1177 |
//reset it back to zero... we haven't got the correct subset yet. |
|
1178 |
fLastPointerLocation = 0 ; |
|
1179 |
||
1180 |
} |
|
1181 |
} |
|
1182 |
//xxx: we can put some logic here as from what column it should start looking |
|
1183 |
//for now we always start at 0 |
|
1184 |
//fallback to tolerant algorithm, it would look for differnt element stored at different |
|
1185 |
//depth and get us the pointer location. |
|
1186 |
return fShouldSkip && skipElement((short)0); |
|
1187 |
||
1188 |
} |
|
1189 |
||
1190 |
//start of the column at which it should try searching |
|
1191 |
boolean skipElement(short column) throws IOException { |
|
1192 |
short depth = (short)fElementStack.fDepth ; |
|
1193 |
||
1194 |
if(depth > MAX_DEPTH_LIMIT){ |
|
1195 |
return fShouldSkip = false ; |
|
1196 |
} |
|
1197 |
for(short i = column ; i < MAX_POINTER_AT_A_DEPTH ; i++){ |
|
1198 |
short pointer = getElementPointer(depth , i ) ; |
|
1199 |
||
1200 |
if(pointer == 0){ |
|
1201 |
return fShouldSkip = false ; |
|
1202 |
} |
|
1203 |
||
1204 |
if(fElementArray[pointer] != null && skipFromTheBuffer(fElementArray[pointer])){ |
|
1205 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1206 |
System.out.println(); |
|
1207 |
System.out.println("Element " + fElementRawname + " was SKIPPED at depth = " + fElementStack.fDepth + " column = " + column ); |
|
1208 |
System.out.println(); |
|
1209 |
} |
|
1210 |
fLastPointerLocation = pointer ; |
|
1211 |
return fShouldSkip = true ; |
|
1212 |
} |
|
1213 |
} |
|
1214 |
return fShouldSkip = false ; |
|
1215 |
} |
|
1216 |
||
1217 |
/** |
|
1218 |
* Scans a start element. This method will handle the binding of |
|
1219 |
* namespace information and notifying the handler of the start |
|
1220 |
* of the element. |
|
1221 |
* <p> |
|
1222 |
* <pre> |
|
1223 |
* [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>' |
|
1224 |
* [40] STag ::= '<' Name (S Attribute)* S? '>' |
|
1225 |
* </pre> |
|
1226 |
* <p> |
|
1227 |
* <strong>Note:</strong> This method assumes that the leading |
|
1228 |
* '<' character has been consumed. |
|
1229 |
* <p> |
|
1230 |
* <strong>Note:</strong> This method uses the fElementQName and |
|
1231 |
* fAttributes variables. The contents of these variables will be |
|
1232 |
* destroyed. The caller should copy important information out of |
|
1233 |
* these variables before calling this method. |
|
1234 |
* NB: Content in fAttributes is valid only till the state of the parser is XMLEvent.START_ELEMENT |
|
1235 |
* |
|
1236 |
* @return True if element is empty. (i.e. It matches |
|
1237 |
* production [44]. |
|
1238 |
*/ |
|
1239 |
// fElementQName will have the details of element just read.. |
|
1240 |
// fAttributes will have the details of all the attributes. |
|
1241 |
protected boolean scanStartElement() |
|
1242 |
throws IOException, XNIException { |
|
1243 |
||
1244 |
if (DEBUG_START_END_ELEMENT) System.out.println( this.getClass().toString() + ">>> scanStartElement()"); |
|
1245 |
//when skipping is true and no more elements should be added |
|
1246 |
if(fSkip && !fAdd){ |
|
1247 |
//get the stored element -- if everything goes right this should match the |
|
1248 |
//token in the buffer |
|
1249 |
||
1250 |
QName name = fElementStack.getNext(); |
|
1251 |
||
1252 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1253 |
System.out.println("Trying to skip String = " + name.rawname); |
|
1254 |
} |
|
1255 |
||
1256 |
//Be conservative -- if skipping fails -- stop. |
|
1257 |
fSkip = fEntityScanner.skipString(name.rawname); |
|
1258 |
||
1259 |
if(fSkip){ |
|
1260 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1261 |
System.out.println("Element SUCESSFULLY skipped = " + name.rawname); |
|
1262 |
} |
|
1263 |
fElementStack.push(); |
|
1264 |
fElementQName = name; |
|
1265 |
}else{ |
|
1266 |
//if skipping fails reposition the stack or fallback to normal way of processing |
|
1267 |
fElementStack.reposition(); |
|
1268 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1269 |
System.out.println("Element was NOT skipped, REPOSITIONING stack" ); |
|
1270 |
} |
|
1271 |
} |
|
1272 |
} |
|
1273 |
||
1274 |
//we are still at the stage of adding elements |
|
1275 |
//the elements were not matched or |
|
1276 |
//fSkip is not set to true |
|
1277 |
if(!fSkip || fAdd){ |
|
1278 |
//get the next element from the stack |
|
1279 |
fElementQName = fElementStack.nextElement(); |
|
1280 |
// name |
|
1281 |
if (fNamespaces) { |
|
1282 |
fEntityScanner.scanQName(fElementQName); |
|
1283 |
} else { |
|
1284 |
String name = fEntityScanner.scanName(); |
|
1285 |
fElementQName.setValues(null, name, name, null); |
|
1286 |
} |
|
1287 |
||
1288 |
if(DEBUG)System.out.println("Element scanned in start element is " + fElementQName.toString()); |
|
1289 |
if(DEBUG_SKIP_ALGORITHM){ |
|
1290 |
if(fAdd){ |
|
1291 |
System.out.println("Elements are being ADDED -- elemet added is = " + fElementQName.rawname + " at count = " + fElementStack.fCount); |
|
1292 |
} |
|
1293 |
} |
|
1294 |
||
1295 |
} |
|
1296 |
||
1297 |
//when the elements are being added , we need to check if we are set for skipping the elements |
|
1298 |
if(fAdd){ |
|
1299 |
//this sets the value of fAdd variable |
|
1300 |
fElementStack.matchElement(fElementQName); |
|
1301 |
} |
|
1302 |
||
1303 |
||
1304 |
//xxx: We dont need another pointer, fCurrentElement, we can use fElementQName |
|
1305 |
fCurrentElement = fElementQName; |
|
1306 |
||
1307 |
String rawname = fElementQName.rawname; |
|
1308 |
||
1309 |
fEmptyElement = false; |
|
1310 |
||
1311 |
fAttributes.removeAllAttributes(); |
|
1312 |
||
1313 |
if(!seekCloseOfStartTag()){ |
|
1314 |
fReadingAttributes = true; |
|
1315 |
fAttributeCacheUsedCount =0; |
|
1316 |
fStringBufferIndex =0; |
|
1317 |
fAddDefaultAttr = true; |
|
1318 |
do { |
|
1319 |
scanAttribute(fAttributes); |
|
1320 |
if (fSecurityManager != null && fAttributes.getLength() > fElementAttributeLimit){ |
|
1321 |
fErrorReporter.reportError(XMLMessageFormatter.XML_DOMAIN, |
|
1322 |
"ElementAttributeLimit", |
|
1323 |
new Object[]{rawname, new Integer(fAttributes.getLength()) }, |
|
1324 |
XMLErrorReporter.SEVERITY_FATAL_ERROR ); |
|
1325 |
} |
|
1326 |
||
1327 |
} while (!seekCloseOfStartTag()); |
|
1328 |
fReadingAttributes=false; |
|
1329 |
} |
|
1330 |
||
1331 |
if (fEmptyElement) { |
|
1332 |
//decrease the markup depth.. |
|
1333 |
fMarkupDepth--; |
|
1334 |
||
1335 |
// check that this element was opened in the same entity |
|
1336 |
if (fMarkupDepth < fEntityStack[fEntityDepth - 1]) { |
|
1337 |
reportFatalError("ElementEntityMismatch", |
|
1338 |
new Object[]{fCurrentElement.rawname}); |
|
1339 |
} |
|
1340 |
// call handler |
|
1341 |
if (fDocumentHandler != null) { |
|
1342 |
fDocumentHandler.emptyElement(fElementQName, fAttributes, null); |
|
1343 |
} |
|
1344 |
||
1345 |
//We should not be popping out the context here in endELement becaause the namespace context is still |
|
1346 |
//valid when parser is at the endElement state. |
|
1347 |
//if (fNamespaces) { |
|
1348 |
// fNamespaceContext.popContext(); |
|
1349 |
//} |
|
1350 |
||
1351 |
//pop the element off the stack.. |
|
1352 |
fElementStack.popElement(); |
|
1353 |
||
1354 |
} else { |
|
1355 |
||
1356 |
if(dtdGrammarUtil != null) |
|
1357 |
dtdGrammarUtil.startElement(fElementQName, fAttributes); |
|
1358 |
if(fDocumentHandler != null){ |
|
1359 |
//complete element and attributes are traversed in this function so we can send a callback |
|
1360 |
//here. |
|
1361 |
//<strong>we shouldn't be sending callback in scanDocument()</strong> |
|
1362 |
fDocumentHandler.startElement(fElementQName, fAttributes, null); |
|
1363 |
} |
|
1364 |
} |
|
1365 |
||
1366 |
||
1367 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() + "<<< scanStartElement(): "+fEmptyElement); |
|
1368 |
return fEmptyElement; |
|
1369 |
||
1370 |
} // scanStartElement():boolean |
|
1371 |
||
1372 |
/** |
|
1373 |
* Looks for the close of start tag, i.e. if it finds '>' or '/>' |
|
1374 |
* Characters are consumed. |
|
1375 |
*/ |
|
1376 |
protected boolean seekCloseOfStartTag() throws IOException, XNIException { |
|
1377 |
// spaces |
|
1378 |
boolean sawSpace = fEntityScanner.skipSpaces(); |
|
1379 |
||
1380 |
// end tag? |
|
1381 |
final int c = fEntityScanner.peekChar(); |
|
1382 |
if (c == '>') { |
|
1383 |
fEntityScanner.scanChar(); |
|
1384 |
return true; |
|
1385 |
} else if (c == '/') { |
|
1386 |
fEntityScanner.scanChar(); |
|
1387 |
if (!fEntityScanner.skipChar('>')) { |
|
1388 |
reportFatalError("ElementUnterminated", |
|
1389 |
new Object[]{fElementQName.rawname}); |
|
1390 |
} |
|
1391 |
fEmptyElement = true; |
|
1392 |
return true; |
|
1393 |
} else if (!isValidNameStartChar(c) || !sawSpace) { |
|
1394 |
reportFatalError("ElementUnterminated", new Object[]{fElementQName.rawname}); |
|
1395 |
} |
|
1396 |
||
1397 |
return false; |
|
1398 |
} |
|
1399 |
||
1400 |
public boolean hasAttributes(){ |
|
1401 |
return fAttributes.getLength() > 0 ? true : false ; |
|
1402 |
} |
|
1403 |
||
1404 |
||
1405 |
/** |
|
1406 |
* Scans an attribute. |
|
1407 |
* <p> |
|
1408 |
* <pre> |
|
1409 |
* [41] Attribute ::= Name Eq AttValue |
|
1410 |
* </pre> |
|
1411 |
* <p> |
|
1412 |
* <strong>Note:</strong> This method assumes that the next |
|
1413 |
* character on the stream is the first character of the attribute |
|
1414 |
* name. |
|
1415 |
* <p> |
|
1416 |
* <strong>Note:</strong> This method uses the fAttributeQName and |
|
1417 |
* fQName variables. The contents of these variables will be |
|
1418 |
* destroyed. |
|
1419 |
* |
|
1420 |
* @param attributes The attributes list for the scanned attribute. |
|
1421 |
*/ |
|
1422 |
||
1423 |
/** |
|
1424 |
* protected void scanAttribute(AttributeIteratorImpl attributes) |
|
1425 |
* throws IOException, XNIException { |
|
1426 |
* if (DEBUG_START_END_ELEMENT) System.out.println(">>> scanAttribute()"); |
|
1427 |
* |
|
1428 |
* |
|
1429 |
* // name |
|
1430 |
* if (fNamespaces) { |
|
1431 |
* fEntityScanner.scanQName(fAttributeQName); |
|
1432 |
* } |
|
1433 |
* else { |
|
1434 |
* String name = fEntityScanner.scanName(); |
|
1435 |
* fAttributeQName.setValues(null, name, name, null); |
|
1436 |
* } |
|
1437 |
* |
|
1438 |
* // equals |
|
1439 |
* fEntityScanner.skipSpaces(); |
|
1440 |
* if (!fEntityScanner.skipChar('=')) { |
|
1441 |
* reportFatalError("EqRequiredInAttribute", |
|
1442 |
* new Object[]{fAttributeQName.rawname}); |
|
1443 |
* } |
|
1444 |
* fEntityScanner.skipSpaces(); |
|
1445 |
* |
|
1446 |
* |
|
1447 |
* // content |
|
1448 |
* int oldLen = attributes.getLength(); |
|
1449 |
*/ |
|
1450 |
/**xxx there is one check of duplicate attribute that has been removed. |
|
1451 |
* attributes.addAttribute(fAttributeQName, XMLSymbols.fCDATASymbol, null); |
|
1452 |
* |
|
1453 |
* // WFC: Unique Att Spec |
|
1454 |
* if (oldLen == attributes.getLength()) { |
|
1455 |
* reportFatalError("AttributeNotUnique", |
|
1456 |
* new Object[]{fCurrentElement.rawname, |
|
1457 |
* fAttributeQName.rawname}); |
|
1458 |
* } |
|
1459 |
*/ |
|
1460 |
||
1461 |
/* |
|
1462 |
//REVISIT: one more case needs to be included: external PE and standalone is no |
|
1463 |
boolean isVC = fHasExternalDTD && !fStandalone; |
|
1464 |
scanAttributeValue(fTempString, fTempString2, |
|
1465 |
fAttributeQName.rawname, attributes, |
|
1466 |
oldLen, isVC); |
|
1467 |
||
1468 |
//attributes.setValue(oldLen, fTempString.toString()); |
|
1469 |
//attributes.setNonNormalizedValue(oldLen, fTempString2.toString()); |
|
1470 |
//attributes.setSpecified(oldLen, true); |
|
1471 |
||
1472 |
AttributeImpl attribute = new AttributeImpl(fAttributeQName.prefix,fAttributeQName.localpart,fAttributeQName.uri,fTempString.toString(),fTempString2.toString(),XMLSymbols.fCDATASymbol,true); |
|
1473 |
fAttributes.addAttribute(attribute); |
|
1474 |
if (DEBUG_START_END_ELEMENT) System.out.println("<<< scanAttribute()"); |
|
1475 |
} // scanAttribute(XMLAttributes) |
|
1476 |
||
1477 |
*/ |
|
1478 |
||
1479 |
/** return the attribute iterator implementation */ |
|
1480 |
public XMLAttributesIteratorImpl getAttributeIterator(){ |
|
1481 |
if(dtdGrammarUtil != null && fAddDefaultAttr){ |
|
1482 |
dtdGrammarUtil.addDTDDefaultAttrs(fElementQName,fAttributes); |
|
1483 |
fAddDefaultAttr = false; |
|
1484 |
} |
|
1485 |
return fAttributes; |
|
1486 |
} |
|
1487 |
||
1488 |
/** return if standalone is set */ |
|
1489 |
public boolean standaloneSet(){ |
|
1490 |
return fStandaloneSet; |
|
1491 |
} |
|
1492 |
/** return if the doucment is standalone */ |
|
1493 |
public boolean isStandAlone(){ |
|
1494 |
return fStandalone ; |
|
1495 |
} |
|
1496 |
/** |
|
1497 |
* Scans an attribute name value pair. |
|
1498 |
* <p> |
|
1499 |
* <pre> |
|
1500 |
* [41] Attribute ::= Name Eq AttValue |
|
1501 |
* </pre> |
|
1502 |
* <p> |
|
1503 |
* <strong>Note:</strong> This method assumes that the next |
|
1504 |
* character on the stream is the first character of the attribute |
|
1505 |
* name. |
|
1506 |
* <p> |
|
1507 |
* <strong>Note:</strong> This method uses the fAttributeQName and |
|
1508 |
* fQName variables. The contents of these variables will be |
|
1509 |
* destroyed. |
|
1510 |
* |
|
1511 |
* @param attributes The attributes list for the scanned attribute. |
|
1512 |
*/ |
|
1513 |
||
1514 |
protected void scanAttribute(XMLAttributes attributes) |
|
1515 |
throws IOException, XNIException { |
|
1516 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() +">>> scanAttribute()"); |
|
1517 |
||
1518 |
// name |
|
1519 |
if (fNamespaces) { |
|
1520 |
fEntityScanner.scanQName(fAttributeQName); |
|
1521 |
} else { |
|
1522 |
String name = fEntityScanner.scanName(); |
|
1523 |
fAttributeQName.setValues(null, name, name, null); |
|
1524 |
} |
|
1525 |
||
1526 |
// equals |
|
1527 |
fEntityScanner.skipSpaces(); |
|
1528 |
if (!fEntityScanner.skipChar('=')) { |
|
1529 |
reportFatalError("EqRequiredInAttribute", |
|
1530 |
new Object[] {fCurrentElement.rawname, fAttributeQName.rawname}); |
|
1531 |
} |
|
1532 |
fEntityScanner.skipSpaces(); |
|
1533 |
||
1534 |
int attIndex = 0 ; |
|
1535 |
//REVISIT: one more case needs to be included: external PE and standalone is no |
|
1536 |
boolean isVC = fHasExternalDTD && !fStandalone; |
|
1537 |
//fTempString would store attribute value |
|
1538 |
///fTempString2 would store attribute non-normalized value |
|
1539 |
||
1540 |
//this function doesn't use 'attIndex'. We are adding the attribute later |
|
1541 |
//after we have figured out that current attribute is not namespace declaration |
|
1542 |
//since scanAttributeValue doesn't use attIndex parameter therefore we |
|
1543 |
//can safely add the attribute later.. |
|
1544 |
XMLString tmpStr = getString(); |
|
1545 |
||
1546 |
scanAttributeValue(tmpStr, fTempString2, |
|
1547 |
fAttributeQName.rawname, attributes, |
|
1548 |
attIndex, isVC); |
|
1549 |
||
1550 |
// content |
|
1551 |
int oldLen = attributes.getLength(); |
|
1552 |
//if the attribute name already exists.. new value is replaced with old value |
|
1553 |
attIndex = attributes.addAttribute(fAttributeQName, XMLSymbols.fCDATASymbol, null); |
|
1554 |
||
1555 |
// WFC: Unique Att Spec |
|
1556 |
//attributes count will be same if the current attribute name already exists for this element name. |
|
1557 |
//this means there are two duplicate attributes. |
|
1558 |
if (oldLen == attributes.getLength()) { |
|
1559 |
reportFatalError("AttributeNotUnique", |
|
1560 |
new Object[]{fCurrentElement.rawname, |
|
1561 |
fAttributeQName.rawname}); |
|
1562 |
} |
|
1563 |
||
1564 |
//tmpString contains attribute value |
|
1565 |
//we are passing null as the attribute value |
|
1566 |
attributes.setValue(attIndex, null, tmpStr); |
|
1567 |
||
1568 |
///xxx: nonNormalizedValue is not being set as it is not required by SAX & DOM |
|
1569 |
//attributes.setNonNormalizedValue(oldLen, fTempString2.toString()); |
|
1570 |
attributes.setSpecified(attIndex, true); |
|
1571 |
||
1572 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() +"<<< scanAttribute()"); |
|
1573 |
||
1574 |
} // scanAttribute(XMLAttributes) |
|
1575 |
||
1576 |
/** |
|
1577 |
* Scans element content. |
|
1578 |
* |
|
1579 |
* @return Returns the next character on the stream. |
|
1580 |
*/ |
|
1581 |
//CHANGED: |
|
1582 |
//EARLIER: scanContent() |
|
1583 |
//NOW: scanContent(XMLStringBuffer) |
|
1584 |
//It makes things easy if this functions takes XMLStringBuffer as parameter.. |
|
1585 |
//this function appends the data to the buffer. |
|
1586 |
protected int scanContent(XMLStringBuffer content) throws IOException, XNIException { |
|
1587 |
//set the fTempString length to 0 before passing it on to scanContent |
|
1588 |
//scanContent sets the correct co-ordinates as per the content read |
|
1589 |
fTempString.length = 0; |
|
1590 |
int c = fEntityScanner.scanContent(fTempString); |
|
1591 |
content.append(fTempString); |
|
1592 |
fTempString.length = 0; |
|
1593 |
if (c == '\r') { |
|
1594 |
// happens when there is the character reference |
|
1595 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry |
|
1596 |
fEntityScanner.scanChar(); |
|
1597 |
content.append((char)c); |
|
1598 |
c = -1; |
|
1599 |
} else if (c == ']') { |
|
1600 |
//fStringBuffer.clear(); |
|
1601 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry |
|
1602 |
content.append((char)fEntityScanner.scanChar()); |
|
1603 |
// remember where we are in case we get an endEntity before we |
|
1604 |
// could flush the buffer out - this happens when we're parsing an |
|
1605 |
// entity which ends with a ] |
|
1606 |
fInScanContent = true; |
|
1607 |
// |
|
1608 |
// We work on a single character basis to handle cases such as: |
|
1609 |
// ']]]>' which we might otherwise miss. |
|
1610 |
// |
|
1611 |
if (fEntityScanner.skipChar(']')) { |
|
1612 |
content.append(']'); |
|
1613 |
while (fEntityScanner.skipChar(']')) { |
|
1614 |
content.append(']'); |
|
1615 |
} |
|
1616 |
if (fEntityScanner.skipChar('>')) { |
|
1617 |
reportFatalError("CDEndInContent", null); |
|
1618 |
} |
|
1619 |
} |
|
1620 |
fInScanContent = false; |
|
1621 |
c = -1; |
|
1622 |
} |
|
1623 |
if (fDocumentHandler != null && content.length > 0) { |
|
1624 |
//fDocumentHandler.characters(content, null); |
|
1625 |
} |
|
1626 |
return c; |
|
1627 |
||
1628 |
} // scanContent():int |
|
1629 |
||
1630 |
||
1631 |
/** |
|
1632 |
* Scans a CDATA section. |
|
1633 |
* <p> |
|
1634 |
* <strong>Note:</strong> This method uses the fTempString and |
|
1635 |
* fStringBuffer variables. |
|
1636 |
* |
|
1637 |
* @param complete True if the CDATA section is to be scanned |
|
1638 |
* completely. |
|
1639 |
* |
|
1640 |
* @return True if CDATA is completely scanned. |
|
1641 |
*/ |
|
1642 |
//CHANGED: |
|
1643 |
protected boolean scanCDATASection(XMLStringBuffer contentBuffer, boolean complete) |
|
1644 |
throws IOException, XNIException { |
|
1645 |
||
1646 |
// call handler |
|
1647 |
if (fDocumentHandler != null) { |
|
1648 |
//fDocumentHandler.startCDATA(null); |
|
1649 |
} |
|
1650 |
||
1651 |
while (true) { |
|
1652 |
//scanData will fill the contentBuffer |
|
1653 |
if (!fEntityScanner.scanData("]]>", contentBuffer)) { |
|
1654 |
break ; |
|
1655 |
/** We dont need all this code if we pass ']]>' as delimeter.. |
|
1656 |
* int brackets = 2; |
|
1657 |
* while (fEntityScanner.skipChar(']')) { |
|
1658 |
* brackets++; |
|
1659 |
* } |
|
1660 |
* |
|
1661 |
* //When we find more than 2 square brackets |
|
1662 |
* if (fDocumentHandler != null && brackets > 2) { |
|
1663 |
* //we dont need to clear the buffer.. |
|
1664 |
* //contentBuffer.clear(); |
|
1665 |
* for (int i = 2; i < brackets; i++) { |
|
1666 |
* contentBuffer.append(']'); |
|
1667 |
* } |
|
1668 |
* fDocumentHandler.characters(contentBuffer, null); |
|
1669 |
* } |
|
1670 |
* |
|
1671 |
* if (fEntityScanner.skipChar('>')) { |
|
1672 |
* break; |
|
1673 |
* } |
|
1674 |
* if (fDocumentHandler != null) { |
|
1675 |
* //we dont need to clear the buffer now.. |
|
1676 |
* //contentBuffer.clear(); |
|
1677 |
* contentBuffer.append("]]"); |
|
1678 |
* fDocumentHandler.characters(contentBuffer, null); |
|
1679 |
* } |
|
1680 |
**/ |
|
1681 |
} else { |
|
1682 |
int c = fEntityScanner.peekChar(); |
|
1683 |
if (c != -1 && isInvalidLiteral(c)) { |
|
1684 |
if (XMLChar.isHighSurrogate(c)) { |
|
1685 |
//contentBuffer.clear(); |
|
1686 |
//scan surrogates if any.... |
|
1687 |
scanSurrogates(contentBuffer); |
|
1688 |
} else { |
|
1689 |
reportFatalError("InvalidCharInCDSect", |
|
1690 |
new Object[]{Integer.toString(c,16)}); |
|
1691 |
fEntityScanner.scanChar(); |
|
1692 |
} |
|
1693 |
} |
|
1694 |
//by this time we have also read surrogate contents if any... |
|
1695 |
if (fDocumentHandler != null) { |
|
1696 |
//fDocumentHandler.characters(contentBuffer, null); |
|
1697 |
} |
|
1698 |
} |
|
1699 |
} |
|
1700 |
fMarkupDepth--; |
|
1701 |
||
1702 |
if (fDocumentHandler != null && contentBuffer.length > 0) { |
|
1703 |
//fDocumentHandler.characters(contentBuffer, null); |
|
1704 |
} |
|
1705 |
||
1706 |
// call handler |
|
1707 |
if (fDocumentHandler != null) { |
|
1708 |
//fDocumentHandler.endCDATA(null); |
|
1709 |
} |
|
1710 |
||
1711 |
return true; |
|
1712 |
||
1713 |
} // scanCDATASection(XMLStringBuffer, boolean):boolean |
|
1714 |
||
1715 |
/** |
|
1716 |
* Scans an end element. |
|
1717 |
* <p> |
|
1718 |
* <pre> |
|
1719 |
* [42] ETag ::= '</' Name S? '>' |
|
1720 |
* </pre> |
|
1721 |
* <p> |
|
1722 |
* <strong>Note:</strong> This method uses the fElementQName variable. |
|
1723 |
* The contents of this variable will be destroyed. The caller should |
|
1724 |
* copy the needed information out of this variable before calling |
|
1725 |
* this method. |
|
1726 |
* |
|
1727 |
* @return The element depth. |
|
1728 |
*/ |
|
1729 |
protected int scanEndElement() throws IOException, XNIException { |
|
1730 |
if (DEBUG_START_END_ELEMENT) System.out.println(this.getClass().toString() +">>> scanEndElement()"); |
|
1731 |
||
1732 |
// pop context |
|
1733 |
QName endElementName = fElementStack.popElement(); |
|
1734 |
||
1735 |
String rawname = endElementName.rawname; |
|
1736 |
if(DEBUG)System.out.println("endElementName = " + endElementName.toString()); |
|
1737 |
// Take advantage of the fact that next string _should_ be "fElementQName.rawName", |
|
1738 |
//In scanners most of the time is consumed on checks done for XML characters, we can |
|
1739 |
// optimize on it and avoid the checks done for endElement, |
|
1740 |
//we will also avoid symbol table lookup - neeraj.bajaj@sun.com |
|
1741 |
||
1742 |
// this should work both for namespace processing true or false... |
|
1743 |
||
1744 |
//REVISIT: if the string is not the same as expected.. we need to do better error handling.. |
|
1745 |
//We can skip this for now... In any case if the string doesn't match -- document is not well formed. |
|
1746 |
||
1747 |
if (!fEntityScanner.skipString(endElementName.rawname)) { |
|
1748 |
reportFatalError("ETagRequired", new Object[]{rawname}); |
|
1749 |
} |
|
1750 |
||
1751 |
// end |
|
1752 |
fEntityScanner.skipSpaces(); |
|
1753 |
if (!fEntityScanner.skipChar('>')) { |
|
1754 |
reportFatalError("ETagUnterminated", |
|
1755 |
new Object[]{rawname}); |
|
1756 |
} |
|
1757 |
fMarkupDepth--; |
|
1758 |
||
1759 |
//we have increased the depth for two markup "<" characters |
|
1760 |
fMarkupDepth--; |
|
1761 |
||
1762 |
// check that this element was opened in the same entity |
|
1763 |
if (fMarkupDepth < fEntityStack[fEntityDepth - 1]) { |
|
1764 |
reportFatalError("ElementEntityMismatch", |
|
1765 |
new Object[]{rawname}); |
|
1766 |
} |
|
1767 |
||
1768 |
//We should not be popping out the context here in endELement becaause the namespace context is still |
|
1769 |
//valid when parser is at the endElement state. |
|
1770 |
||
1771 |
//if (fNamespaces) { |
|
1772 |
// fNamespaceContext.popContext(); |
|
1773 |
//} |
|
1774 |
||
1775 |
// call handler |
|
1776 |
if (fDocumentHandler != null ) { |
|
1777 |
//end element is scanned in this function so we can send a callback |
|
1778 |
//here. |
|
1779 |
//<strong>we shouldn't be sending callback in scanDocument()</strong> |
|
1780 |
||
1781 |
fDocumentHandler.endElement(endElementName, null); |
|
1782 |
} |
|
1783 |
if(dtdGrammarUtil != null) |
|
1784 |
dtdGrammarUtil.endElement(endElementName); |
|
1785 |
||
1786 |
return fMarkupDepth; |
|
1787 |
||
1788 |
} // scanEndElement():int |
|
1789 |
||
1790 |
/** |
|
1791 |
* Scans a character reference. |
|
1792 |
* <p> |
|
1793 |
* <pre> |
|
1794 |
* [66] CharRef ::= '&#' [0-9]+ ';' | '&#x' [0-9a-fA-F]+ ';' |
|
1795 |
* </pre> |
|
1796 |
*/ |
|
1797 |
protected void scanCharReference() |
|
1798 |
throws IOException, XNIException { |
|
1799 |
||
1800 |
fStringBuffer2.clear(); |
|
1801 |
int ch = scanCharReferenceValue(fStringBuffer2, null); |
|
1802 |
fMarkupDepth--; |
|
1803 |
if (ch != -1) { |
|
1804 |
// call handler |
|
1805 |
||
1806 |
if (fDocumentHandler != null) { |
|
1807 |
if (fNotifyCharRefs) { |
|
1808 |
fDocumentHandler.startGeneralEntity(fCharRefLiteral, null, null, null); |
|
1809 |
} |
|
1810 |
Augmentations augs = null; |
|
1811 |
if (fValidation && ch <= 0x20) { |
|
1812 |
if (fTempAugmentations != null) { |
|
1813 |
fTempAugmentations.removeAllItems(); |
|
1814 |
} |
|
1815 |
else { |
|
1816 |
fTempAugmentations = new AugmentationsImpl(); |
|
1817 |
} |
|
1818 |
augs = fTempAugmentations; |
|
1819 |
augs.putItem(Constants.CHAR_REF_PROBABLE_WS, Boolean.TRUE); |
|
1820 |
} |
|
1821 |
//xxx: How do we deal with this - how to return charReferenceValues |
|
1822 |
//now this is being commented because this is taken care in scanDocument() |
|
1823 |
//fDocumentHandler.characters(fStringBuffer2, null); |
|
1824 |
if (fNotifyCharRefs) { |
|
1825 |
fDocumentHandler.endGeneralEntity(fCharRefLiteral, null); |
|
1826 |
} |
|
1827 |
} |
|
1828 |
} |
|
1829 |
||
1830 |
} // scanCharReference() |
|
1831 |
||
1832 |
||
1833 |
/** |
|
1834 |
* Scans an entity reference. |
|
1835 |
* |
|
1836 |
* @return returns true if the new entity is started. If it was built-in entity |
|
1837 |
* 'false' is returned. |
|
1838 |
* @throws IOException Thrown if i/o error occurs. |
|
1839 |
* @throws XNIException Thrown if handler throws exception upon |
|
1840 |
* notification. |
|
1841 |
*/ |
|
1842 |
protected void scanEntityReference(XMLStringBuffer content) throws IOException, XNIException { |
|
1843 |
String name = fEntityScanner.scanName(); |
|
1844 |
if (name == null) { |
|
1845 |
reportFatalError("NameRequiredInReference", null); |
|
12458 | 1846 |
return; |
12005 | 1847 |
} |
1848 |
if (!fEntityScanner.skipChar(';')) { |
|
1849 |
reportFatalError("SemicolonRequiredInReference", new Object []{name}); |
|
1850 |
} |
|
1851 |
if (fEntityStore.isUnparsedEntity(name)) { |
|
1852 |
reportFatalError("ReferenceToUnparsedEntity", new Object[]{name}); |
|
1853 |
} |
|
1854 |
fMarkupDepth--; |
|
1855 |
fCurrentEntityName = name; |
|
1856 |
||
1857 |
// handle built-in entities |
|
1858 |
if (name == fAmpSymbol) { |
|
1859 |
handleCharacter('&', fAmpSymbol, content); |
|
1860 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS; |
|
1861 |
return ; |
|
1862 |
} else if (name == fLtSymbol) { |
|
1863 |
handleCharacter('<', fLtSymbol, content); |
|
1864 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS; |
|
1865 |
return ; |
|
1866 |
} else if (name == fGtSymbol) { |
|
1867 |
handleCharacter('>', fGtSymbol, content); |
|
1868 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS; |
|
1869 |
return ; |
|
1870 |
} else if (name == fQuotSymbol) { |
|
1871 |
handleCharacter('"', fQuotSymbol, content); |
|
1872 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS; |
|
1873 |
return ; |
|
1874 |
} else if (name == fAposSymbol) { |
|
1875 |
handleCharacter('\'', fAposSymbol, content); |
|
1876 |
fScannerState = SCANNER_STATE_BUILT_IN_REFS; |
|
1877 |
return ; |
|
1878 |
} |
|
1879 |
||
1880 |
//1. if the entity is external and support to external entities is not required |
|
1881 |
// 2. or entities should not be replaced |
|
1882 |
//3. or if it is built in entity reference. |
|
17534 | 1883 |
boolean isEE = fEntityStore.isExternalEntity(name); |
1884 |
if((isEE && !fSupportExternalEntities) || (!isEE && !fReplaceEntityReferences) || foundBuiltInRefs){ |
|
12005 | 1885 |
fScannerState = SCANNER_STATE_REFERENCE; |
1886 |
return ; |
|
1887 |
} |
|
1888 |
// start general entity |
|
1889 |
if (!fEntityStore.isDeclaredEntity(name)) { |
|
1890 |
//SUPPORT_DTD=false && ReplaceEntityReferences should throw exception |
|
13061
7dfa5735cbc2
7157610: NullPointerException occurs when parsing XML doc
joehw
parents:
12458
diff
changeset
|
1891 |
if (!fSupportDTD && fReplaceEntityReferences) { |
12005 | 1892 |
reportFatalError("EntityNotDeclared", new Object[]{name}); |
1893 |
return; |
|
1894 |
} |
|
1895 |
//REVISIT: one more case needs to be included: external PE and standalone is no |
|
1896 |
if ( fHasExternalDTD && !fStandalone) { |
|
1897 |
if (fValidation) |
|
1898 |
fErrorReporter.reportError(fEntityScanner, XMLMessageFormatter.XML_DOMAIN,"EntityNotDeclared", |
|
1899 |
new Object[]{name}, XMLErrorReporter.SEVERITY_ERROR); |
|
1900 |
} else |
|
1901 |
reportFatalError("EntityNotDeclared", new Object[]{name}); |
|
1902 |
} |
|
1903 |
//we are starting the entity even if the entity was not declared |
|
1904 |
//if that was the case it its taken care in XMLEntityManager.startEntity() |
|
1905 |
//we immediately call the endEntity. Application gets to know if there was |
|
1906 |
//any entity that was not declared. |
|
1907 |
fEntityManager.startEntity(name, false); |
|
1908 |
//set the scaner state to content.. parser will automatically revive itself at any point of time. |
|
1909 |
//setScannerState(SCANNER_STATE_CONTENT); |
|
1910 |
//return true ; |
|
1911 |
} // scanEntityReference() |
|
1912 |
||
1913 |
// utility methods |
|
1914 |
||
1915 |
/** |
|
1916 |
* Calls document handler with a single character resulting from |
|
1917 |
* built-in entity resolution. |
|
1918 |
* |
|
1919 |
* @param c |
|
1920 |
* @param entity built-in name |
|
1921 |
* @param XMLStringBuffer append the character to buffer |
|
1922 |
* |
|
1923 |
* we really dont need to call this function -- this function is only required when |
|
1924 |
* we integrate with rest of Xerces2. SO maintaining the current behavior and still |
|
1925 |
* calling this function to hanlde built-in entity reference. |
|
1926 |
* |
|
1927 |
*/ |
|
1928 |
private void handleCharacter(char c, String entity, XMLStringBuffer content) throws XNIException { |
|
1929 |
foundBuiltInRefs = true; |
|
1930 |
content.append(c); |
|
1931 |
if (fDocumentHandler != null) { |
|
1932 |
fSingleChar[0] = c; |
|
1933 |
if (fNotifyBuiltInRefs) { |
|
1934 |
fDocumentHandler.startGeneralEntity(entity, null, null, null); |
|
1935 |
} |
|
1936 |
fTempString.setValues(fSingleChar, 0, 1); |
|
1937 |
//fDocumentHandler.characters(fTempString, null); |
|
1938 |
||
1939 |
if (fNotifyBuiltInRefs) { |
|
1940 |
fDocumentHandler.endGeneralEntity(entity, null); |
|
1941 |
} |
|
1942 |
} |
|
1943 |
} // handleCharacter(char) |
|
1944 |
||
1945 |
// helper methods |
|
1946 |
||
1947 |
/** |
|
1948 |
* Sets the scanner state. |
|
1949 |
* |
|
1950 |
* @param state The new scanner state. |
|
1951 |
*/ |
|
1952 |
protected final void setScannerState(int state) { |
|
1953 |
||
1954 |
fScannerState = state; |
|
1955 |
if (DEBUG_SCANNER_STATE) { |
|
1956 |
System.out.print("### setScannerState: "); |
|
1957 |
//System.out.print(fScannerState); |
|
1958 |
System.out.print(getScannerStateName(state)); |
|
1959 |
System.out.println(); |
|
1960 |
} |
|
1961 |
||
1962 |
} // setScannerState(int) |
|
1963 |
||
1964 |
||
1965 |
/** |
|
1966 |
* Sets the Driver. |
|
1967 |
* |
|
1968 |
* @param Driver The new Driver. |
|
1969 |
*/ |
|
1970 |
protected final void setDriver(Driver driver) { |
|
1971 |
fDriver = driver; |
|
1972 |
if (DEBUG_DISPATCHER) { |
|
1973 |
System.out.print("%%% setDriver: "); |
|
1974 |
System.out.print(getDriverName(driver)); |
|
1975 |
System.out.println(); |
|
1976 |
} |
|
1977 |
} |
|
1978 |
||
1979 |
// |
|
1980 |
// Private methods |
|
1981 |
// |
|
1982 |
||
1983 |
/** Returns the scanner state name. */ |
|
1984 |
protected String getScannerStateName(int state) { |
|
1985 |
||
1986 |
switch (state) { |
|
1987 |
case SCANNER_STATE_DOCTYPE: return "SCANNER_STATE_DOCTYPE"; |
|
1988 |
case SCANNER_STATE_ROOT_ELEMENT: return "SCANNER_STATE_ROOT_ELEMENT"; |
|
1989 |
case SCANNER_STATE_START_OF_MARKUP: return "SCANNER_STATE_START_OF_MARKUP"; |
|
1990 |
case SCANNER_STATE_COMMENT: return "SCANNER_STATE_COMMENT"; |
|
1991 |
case SCANNER_STATE_PI: return "SCANNER_STATE_PI"; |
|
1992 |
case SCANNER_STATE_CONTENT: return "SCANNER_STATE_CONTENT"; |
|
1993 |
case SCANNER_STATE_REFERENCE: return "SCANNER_STATE_REFERENCE"; |
|
1994 |
case SCANNER_STATE_END_OF_INPUT: return "SCANNER_STATE_END_OF_INPUT"; |
|
1995 |
case SCANNER_STATE_TERMINATED: return "SCANNER_STATE_TERMINATED"; |
|
1996 |
case SCANNER_STATE_CDATA: return "SCANNER_STATE_CDATA"; |
|
1997 |
case SCANNER_STATE_TEXT_DECL: return "SCANNER_STATE_TEXT_DECL"; |
|
1998 |
case SCANNER_STATE_ATTRIBUTE: return "SCANNER_STATE_ATTRIBUTE"; |
|
1999 |
case SCANNER_STATE_ATTRIBUTE_VALUE: return "SCANNER_STATE_ATTRIBUTE_VALUE"; |
|
2000 |
case SCANNER_STATE_START_ELEMENT_TAG: return "SCANNER_STATE_START_ELEMENT_TAG"; |
|
2001 |
case SCANNER_STATE_END_ELEMENT_TAG: return "SCANNER_STATE_END_ELEMENT_TAG"; |
|
2002 |
case SCANNER_STATE_CHARACTER_DATA: return "SCANNER_STATE_CHARACTER_DATA" ; |
|
2003 |
} |
|
2004 |
||
2005 |
return "??? ("+state+')'; |
|
2006 |
||
2007 |
} // getScannerStateName(int):String |
|
2008 |
public String getEntityName(){ |
|
2009 |
//return the cached name |
|
2010 |
return fCurrentEntityName; |
|
2011 |
} |
|
2012 |
||
2013 |
/** Returns the driver name. */ |
|
2014 |
public String getDriverName(Driver driver) { |
|
2015 |
||
2016 |
if (DEBUG_DISPATCHER) { |
|
2017 |
if (driver != null) { |
|
2018 |
String name = driver.getClass().getName(); |
|
2019 |
int index = name.lastIndexOf('.'); |
|
2020 |
if (index != -1) { |
|
2021 |
name = name.substring(index + 1); |
|
2022 |
index = name.lastIndexOf('$'); |
|
2023 |
if (index != -1) { |
|
2024 |
name = name.substring(index + 1); |
|
2025 |
} |
|
2026 |
} |
|
2027 |
return name; |
|
2028 |
} |
|
2029 |
} |
|
2030 |
return "null"; |
|
2031 |
||
2032 |
} // getDriverName():String |
|
2033 |
||
17534 | 2034 |
String checkAccess(String systemId, String allowedProtocols) throws IOException { |
2035 |
String baseSystemId = fEntityScanner.getBaseSystemId(); |
|
2036 |
String expandedSystemId = fEntityManager.expandSystemId(systemId, baseSystemId,fStrictURI); |
|
2037 |
return SecuritySupport.checkAccess(expandedSystemId, allowedProtocols, Constants.ACCESS_EXTERNAL_ALL); |
|
2038 |
} |
|
2039 |
||
12005 | 2040 |
// |
2041 |
// Classes |
|
2042 |
// |
|
2043 |
||
2044 |
/** |
|
2045 |
* @author Neeraj Bajaj, Sun Microsystems. |
|
2046 |
*/ |
|
2047 |
protected static final class Element { |
|
2048 |
||
2049 |
// |
|
2050 |
// Data |
|
2051 |
// |
|
2052 |
||
2053 |
/** Symbol. */ |
|
2054 |
public QName qname; |
|
2055 |
||
2056 |
//raw name stored as characters |
|
2057 |
public char[] fRawname; |
|
2058 |
||
2059 |
/** The next Element entry. */ |
|
2060 |
public Element next; |
|
2061 |
||
2062 |
// |
|
2063 |
// Constructors |
|
2064 |
// |
|
2065 |
||
2066 |
/** |
|
2067 |
* Constructs a new Element from the given QName and next Element |
|
2068 |
* reference. |
|
2069 |
*/ |
|
2070 |
public Element(QName qname, Element next) { |
|
2071 |
this.qname.setValues(qname); |
|
2072 |
this.fRawname = qname.rawname.toCharArray(); |
|
2073 |
this.next = next; |
|
2074 |
} |
|
2075 |
||
2076 |
} // class Element |
|
2077 |
||
2078 |
/** |
|
2079 |
* Element stack. |
|
2080 |
* |
|
2081 |
* @author Neeraj Bajaj, Sun Microsystems. |
|
2082 |
*/ |
|
2083 |
protected class ElementStack2 { |
|
2084 |
||
2085 |
// |
|
2086 |
// Data |
|
2087 |
// |
|
2088 |
||
2089 |
/** The stack data. */ |
|
2090 |
protected QName [] fQName = new QName[20]; |
|
2091 |
||
2092 |
//Element depth |
|
2093 |
protected int fDepth; |
|
2094 |
//total number of elements |
|
2095 |
protected int fCount; |
|
2096 |
//current position |
|
2097 |
protected int fPosition; |
|
2098 |
//Mark refers to the position |
|
2099 |
protected int fMark; |
|
2100 |
||
2101 |
protected int fLastDepth ; |
|
2102 |
||
2103 |
// |
|
2104 |
// Constructors |
|
2105 |
// |
|
2106 |
||
2107 |
/** Default constructor. */ |
|
2108 |
public ElementStack2() { |
|
2109 |
for (int i = 0; i < fQName.length; i++) { |
|
2110 |
fQName[i] = new QName(); |
|
2111 |
} |
|
2112 |
fMark = fPosition = 1; |
|
2113 |
} // <init>() |
|
2114 |
||
2115 |
public void resize(){ |
|
2116 |
/** |
|
2117 |
* int length = fElements.length; |
|
2118 |
* Element [] temp = new Element[length * 2]; |
|
2119 |
* System.arraycopy(fElements, 0, temp, 0, length); |
|
2120 |
* fElements = temp; |
|
2121 |
*/ |
|
2122 |
//resize QNames |
|
2123 |
int oldLength = fQName.length; |
|
2124 |
QName [] tmp = new QName[oldLength * 2]; |
|
2125 |
System.arraycopy(fQName, 0, tmp, 0, oldLength); |
|
2126 |
fQName = tmp; |
|
2127 |
||
2128 |
for (int i = oldLength; i < fQName.length; i++) { |
|
2129 |
fQName[i] = new QName(); |
|
2130 |
} |
|
2131 |
||
2132 |
} |
|
2133 |
||
2134 |
||
2135 |
// |
|
2136 |
// Public methods |
|
2137 |
// |
|
2138 |
||
2139 |
/** Check if the element scanned during the start element |
|
2140 |
*matches the stored element. |
|
2141 |
* |
|
2142 |
*@return true if the match suceeds. |
|
2143 |
*/ |
|
2144 |
public boolean matchElement(QName element) { |
|
2145 |
//last depth is the depth when last elemnt was pushed |
|
2146 |
//if last depth is greater than current depth |
|
2147 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2148 |
System.out.println("fLastDepth = " + fLastDepth); |
|
2149 |
System.out.println("fDepth = " + fDepth); |
|
2150 |
} |
|
2151 |
boolean match = false; |
|
2152 |
if(fLastDepth > fDepth && fDepth <= 2){ |
|
2153 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2154 |
System.out.println("Checking if the elements match " + element.rawname + " , " + fQName[fDepth].rawname); |
|
2155 |
} |
|
2156 |
if(element.rawname == fQName[fDepth].rawname){ |
|
2157 |
fAdd = false; |
|
2158 |
//mark this position |
|
2159 |
//decrease the depth by 1 as arrays are 0 based |
|
2160 |
fMark = fDepth - 1; |
|
2161 |
//we found the match and from next element skipping will start, add 1 |
|
2162 |
fPosition = fMark + 1 ; |
|
2163 |
match = true; |
|
2164 |
//Once we get match decrease the count -- this was increased by nextElement() |
|
2165 |
--fCount; |
|
2166 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2167 |
System.out.println("fAdd FALSE -- NOW ELEMENT SHOULD NOT BE ADDED"); |
|
2168 |
System.out.println("fMark = " + fMark); |
|
2169 |
System.out.println("fPosition = " + fPosition); |
|
2170 |
System.out.println("fDepth = " + fDepth); |
|
2171 |
System.out.println("fCount = " + fCount); |
|
2172 |
} |
|
2173 |
}else{ |
|
2174 |
fAdd = true; |
|
2175 |
if(DEBUG_SKIP_ALGORITHM)System.out.println("fAdd is " + fAdd); |
|
2176 |
} |
|
2177 |
} |
|
2178 |
//store the last depth |
|
2179 |
fLastDepth = fDepth++; |
|
2180 |
return match; |
|
2181 |
} // pushElement(QName):QName |
|
2182 |
||
2183 |
/** |
|
2184 |
* This function doesn't increase depth. The function in this function is |
|
2185 |
*broken down into two functions for efficiency. <@see>matchElement</see>. |
|
2186 |
* This function just returns the pointer to the object and its values are set. |
|
2187 |
* |
|
2188 |
*@return QName reference to the next element in the list |
|
2189 |
*/ |
|
2190 |
public QName nextElement() { |
|
2191 |
||
2192 |
//if number of elements becomes equal to the length of array -- stop the skipping |
|
2193 |
if (fCount == fQName.length) { |
|
2194 |
fShouldSkip = false; |
|
2195 |
fAdd = false; |
|
2196 |
if(DEBUG_SKIP_ALGORITHM)System.out.println("SKIPPING STOPPED, fShouldSkip = " + fShouldSkip); |
|
2197 |
//xxx: this is not correct, we are returning the last element |
|
2198 |
//this wont make any difference since flag has been set to 'false' |
|
2199 |
return fQName[--fCount]; |
|
2200 |
} |
|
2201 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2202 |
System.out.println("fCount = " + fCount); |
|
2203 |
} |
|
2204 |
return fQName[fCount++]; |
|
2205 |
||
2206 |
} |
|
2207 |
||
2208 |
/** Note that this function is considerably different than nextElement() |
|
2209 |
* This function just returns the previously stored elements |
|
2210 |
*/ |
|
2211 |
public QName getNext(){ |
|
2212 |
//when position reaches number of elements in the list.. |
|
2213 |
//set the position back to mark, making it a circular linked list. |
|
2214 |
if(fPosition == fCount){ |
|
2215 |
fPosition = fMark; |
|
2216 |
} |
|
2217 |
return fQName[fPosition++]; |
|
2218 |
} |
|
2219 |
||
2220 |
/** returns the current depth |
|
2221 |
*/ |
|
2222 |
public int popElement(){ |
|
2223 |
return fDepth--; |
|
2224 |
} |
|
2225 |
||
2226 |
||
2227 |
/** Clears the stack without throwing away existing QName objects. */ |
|
2228 |
public void clear() { |
|
2229 |
fLastDepth = 0; |
|
2230 |
fDepth = 0; |
|
2231 |
fCount = 0 ; |
|
2232 |
fPosition = fMark = 1; |
|
2233 |
} // clear() |
|
2234 |
||
2235 |
} // class ElementStack |
|
2236 |
||
2237 |
/** |
|
2238 |
* Element stack. This stack operates without synchronization, error |
|
2239 |
* checking, and it re-uses objects instead of throwing popped items |
|
2240 |
* away. |
|
2241 |
* |
|
2242 |
* @author Andy Clark, IBM |
|
2243 |
*/ |
|
2244 |
protected class ElementStack { |
|
2245 |
||
2246 |
// |
|
2247 |
// Data |
|
2248 |
// |
|
2249 |
||
2250 |
/** The stack data. */ |
|
2251 |
protected QName[] fElements; |
|
2252 |
protected int [] fInt = new int[20]; |
|
2253 |
||
2254 |
||
2255 |
//Element depth |
|
2256 |
protected int fDepth; |
|
2257 |
//total number of elements |
|
2258 |
protected int fCount; |
|
2259 |
//current position |
|
2260 |
protected int fPosition; |
|
2261 |
//Mark refers to the position |
|
2262 |
protected int fMark; |
|
2263 |
||
2264 |
protected int fLastDepth ; |
|
2265 |
||
2266 |
// |
|
2267 |
// Constructors |
|
2268 |
// |
|
2269 |
||
2270 |
/** Default constructor. */ |
|
2271 |
public ElementStack() { |
|
2272 |
fElements = new QName[20]; |
|
2273 |
for (int i = 0; i < fElements.length; i++) { |
|
2274 |
fElements[i] = new QName(); |
|
2275 |
} |
|
2276 |
} // <init>() |
|
2277 |
||
2278 |
// |
|
2279 |
// Public methods |
|
2280 |
// |
|
2281 |
||
2282 |
/** |
|
2283 |
* Pushes an element on the stack. |
|
2284 |
* <p> |
|
2285 |
* <strong>Note:</strong> The QName values are copied into the |
|
2286 |
* stack. In other words, the caller does <em>not</em> orphan |
|
2287 |
* the element to the stack. Also, the QName object returned |
|
2288 |
* is <em>not</em> orphaned to the caller. It should be |
|
2289 |
* considered read-only. |
|
2290 |
* |
|
2291 |
* @param element The element to push onto the stack. |
|
2292 |
* |
|
2293 |
* @return Returns the actual QName object that stores the |
|
2294 |
*/ |
|
2295 |
//XXX: THIS FUNCTION IS NOT USED |
|
2296 |
public QName pushElement(QName element) { |
|
2297 |
if (fDepth == fElements.length) { |
|
2298 |
QName[] array = new QName[fElements.length * 2]; |
|
2299 |
System.arraycopy(fElements, 0, array, 0, fDepth); |
|
2300 |
fElements = array; |
|
2301 |
for (int i = fDepth; i < fElements.length; i++) { |
|
2302 |
fElements[i] = new QName(); |
|
2303 |
} |
|
2304 |
} |
|
2305 |
fElements[fDepth].setValues(element); |
|
2306 |
return fElements[fDepth++]; |
|
2307 |
} // pushElement(QName):QName |
|
2308 |
||
2309 |
||
2310 |
/** Note that this function is considerably different than nextElement() |
|
2311 |
* This function just returns the previously stored elements |
|
2312 |
*/ |
|
2313 |
public QName getNext(){ |
|
2314 |
//when position reaches number of elements in the list.. |
|
2315 |
//set the position back to mark, making it a circular linked list. |
|
2316 |
if(fPosition == fCount){ |
|
2317 |
fPosition = fMark; |
|
2318 |
} |
|
2319 |
//store the position of last opened tag at particular depth |
|
2320 |
//fInt[++fDepth] = fPosition; |
|
2321 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2322 |
System.out.println("Element at fPosition = " + fPosition + " is " + fElements[fPosition].rawname); |
|
2323 |
} |
|
2324 |
//return fElements[fPosition++]; |
|
2325 |
return fElements[fPosition]; |
|
2326 |
} |
|
2327 |
||
2328 |
/** This function should be called only when element was skipped sucessfully. |
|
2329 |
* 1. Increase the depth - because element was sucessfully skipped. |
|
2330 |
*2. Store the position of the element token in array "last opened tag" at depth. |
|
2331 |
*3. increase the position counter so as to point to the next element in the array |
|
2332 |
*/ |
|
2333 |
public void push(){ |
|
2334 |
||
2335 |
fInt[++fDepth] = fPosition++; |
|
2336 |
} |
|
2337 |
||
2338 |
/** Check if the element scanned during the start element |
|
2339 |
*matches the stored element. |
|
2340 |
* |
|
2341 |
*@return true if the match suceeds. |
|
2342 |
*/ |
|
2343 |
public boolean matchElement(QName element) { |
|
2344 |
//last depth is the depth when last elemnt was pushed |
|
2345 |
//if last depth is greater than current depth |
|
2346 |
//if(DEBUG_SKIP_ALGORITHM){ |
|
2347 |
// System.out.println("Check if the element " + element.rawname + " matches"); |
|
2348 |
// System.out.println("fLastDepth = " + fLastDepth); |
|
2349 |
// System.out.println("fDepth = " + fDepth); |
|
2350 |
//} |
|
2351 |
boolean match = false; |
|
2352 |
if(fLastDepth > fDepth && fDepth <= 3){ |
|
2353 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2354 |
System.out.println("----------ENTERED THE LOOP WHERE WE CHECK FOR MATCHING OF ELMENT-----"); |
|
2355 |
System.out.println("Depth = " + fDepth + " Checking if INCOMING element " + element.rawname + " match STORED ELEMENT " + fElements[fDepth - 1].rawname); |
|
2356 |
} |
|
2357 |
if(element.rawname == fElements[fDepth - 1].rawname){ |
|
2358 |
fAdd = false; |
|
2359 |
//mark this position |
|
2360 |
//decrease the depth by 1 as arrays are 0 based |
|
2361 |
fMark = fDepth - 1; |
|
2362 |
//we found the match |
|
2363 |
fPosition = fMark; |
|
2364 |
match = true; |
|
2365 |
//Once we get match decrease the count -- this was increased by nextElement() |
|
2366 |
--fCount; |
|
2367 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2368 |
System.out.println("NOW ELEMENT SHOULD NOT BE ADDED, fAdd is set to false"); |
|
2369 |
System.out.println("fMark = " + fMark); |
|
2370 |
System.out.println("fPosition = " + fPosition); |
|
2371 |
System.out.println("fDepth = " + fDepth); |
|
2372 |
System.out.println("fCount = " + fCount); |
|
2373 |
System.out.println("---------MATCH SUCEEDED-----------------"); |
|
2374 |
System.out.println(""); |
|
2375 |
} |
|
2376 |
}else{ |
|
2377 |
fAdd = true; |
|
2378 |
if(DEBUG_SKIP_ALGORITHM)System.out.println("fAdd is " + fAdd); |
|
2379 |
} |
|
2380 |
} |
|
2381 |
//store the position for the current depth |
|
2382 |
//when we are adding the elements, when skipping |
|
2383 |
//starts even then this should be tracked ie. when |
|
2384 |
//calling getNext() |
|
2385 |
if(match){ |
|
2386 |
//from next element skipping will start, add 1 |
|
2387 |
fInt[fDepth] = fPosition++; |
|
2388 |
} else{ |
|
2389 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2390 |
System.out.println("At depth = " + fDepth + "array position is = " + (fCount - 1)); |
|
2391 |
} |
|
2392 |
//sicne fInt[fDepth] contains pointer to the element array which are 0 based. |
|
2393 |
fInt[fDepth] = fCount - 1; |
|
2394 |
} |
|
2395 |
||
2396 |
//if number of elements becomes equal to the length of array -- stop the skipping |
|
2397 |
//xxx: should we do "fCount == fInt.length" |
|
2398 |
if (fCount == fElements.length) { |
|
2399 |
fSkip = false; |
|
2400 |
fAdd = false; |
|
2401 |
//reposition the stack -- it seems to be too complex document and there is no symmerty in structure |
|
2402 |
reposition(); |
|
2403 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2404 |
System.out.println("ALL THE ELMENTS IN ARRAY HAVE BEEN FILLED"); |
|
2405 |
System.out.println("REPOSITIONING THE STACK"); |
|
2406 |
System.out.println("-----------SKIPPING STOPPED----------"); |
|
2407 |
System.out.println(""); |
|
2408 |
} |
|
2409 |
return false; |
|
2410 |
} |
|
2411 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2412 |
if(match){ |
|
2413 |
System.out.println("Storing fPosition = " + fInt[fDepth] + " at fDepth = " + fDepth); |
|
2414 |
}else{ |
|
2415 |
System.out.println("Storing fCount = " + fInt[fDepth] + " at fDepth = " + fDepth); |
|
2416 |
} |
|
2417 |
} |
|
2418 |
//store the last depth |
|
2419 |
fLastDepth = fDepth; |
|
2420 |
return match; |
|
2421 |
} // matchElement(QName):QName |
|
2422 |
||
2423 |
||
2424 |
/** |
|
2425 |
* Returns the next element on the stack. |
|
2426 |
* |
|
2427 |
* @return Returns the actual QName object. Callee should |
|
2428 |
* use this object to store the details of next element encountered. |
|
2429 |
*/ |
|
2430 |
public QName nextElement() { |
|
2431 |
if(fSkip){ |
|
2432 |
fDepth++; |
|
2433 |
//boundary checks are done in matchElement() |
|
2434 |
return fElements[fCount++]; |
|
2435 |
} else if (fDepth == fElements.length) { |
|
2436 |
QName[] array = new QName[fElements.length * 2]; |
|
2437 |
System.arraycopy(fElements, 0, array, 0, fDepth); |
|
2438 |
fElements = array; |
|
2439 |
for (int i = fDepth; i < fElements.length; i++) { |
|
2440 |
fElements[i] = new QName(); |
|
2441 |
} |
|
2442 |
} |
|
2443 |
||
2444 |
return fElements[fDepth++]; |
|
2445 |
||
2446 |
} // pushElement(QName):QName |
|
2447 |
||
2448 |
||
2449 |
/** |
|
2450 |
* Pops an element off of the stack by setting the values of |
|
2451 |
* the specified QName. |
|
2452 |
* <p> |
|
2453 |
* <strong>Note:</strong> The object returned is <em>not</em> |
|
2454 |
* orphaned to the caller. Therefore, the caller should consider |
|
2455 |
* the object to be read-only. |
|
2456 |
*/ |
|
2457 |
public QName popElement() { |
|
2458 |
//return the same object that was pushed -- this would avoid |
|
2459 |
//setting the values for every end element. |
|
2460 |
//STRONG: this object is read only -- this object reference shouldn't be stored. |
|
2461 |
if(fSkip || fAdd ){ |
|
2462 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2463 |
System.out.println("POPPING Element, at position " + fInt[fDepth] + " element at that count is = " + fElements[fInt[fDepth]].rawname); |
|
2464 |
System.out.println(""); |
|
2465 |
} |
|
2466 |
return fElements[fInt[fDepth--]]; |
|
2467 |
} else{ |
|
2468 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2469 |
System.out.println("Retrieveing element at depth = " + fDepth + " is " + fElements[fDepth].rawname ); |
|
2470 |
} |
|
2471 |
return fElements[--fDepth] ; |
|
2472 |
} |
|
2473 |
//element.setValues(fElements[--fDepth]); |
|
2474 |
} // popElement(QName) |
|
2475 |
||
2476 |
/** Reposition the stack. fInt [] contains all the opened tags at particular depth. |
|
2477 |
* Transfer all the opened tags starting from depth '2' to the current depth and reposition them |
|
2478 |
*as per the depth. |
|
2479 |
*/ |
|
2480 |
public void reposition(){ |
|
2481 |
for( int i = 2 ; i <= fDepth ; i++){ |
|
2482 |
fElements[i-1] = fElements[fInt[i]]; |
|
2483 |
} |
|
2484 |
if(DEBUG_SKIP_ALGORITHM){ |
|
2485 |
for( int i = 0 ; i < fDepth ; i++){ |
|
2486 |
System.out.println("fElements[" + i + "]" + " = " + fElements[i].rawname); |
|
2487 |
} |
|
2488 |
} |
|
2489 |
} |
|
2490 |
||
2491 |
/** Clears the stack without throwing away existing QName objects. */ |
|
2492 |
public void clear() { |
|
2493 |
fDepth = 0; |
|
2494 |
fLastDepth = 0; |
|
2495 |
fCount = 0 ; |
|
2496 |
fPosition = fMark = 1; |
|
2497 |
||
2498 |
} // clear() |
|
2499 |
||
2500 |
/** |
|
2501 |
* This function is as a result of optimization done for endElement -- |
|
2502 |
* we dont need to set the value for every end element encouterd. |
|
2503 |
* For Well formedness checks we can have the same QName object that was pushed. |
|
2504 |
* the values will be set only if application need to know about the endElement |
|
2505 |
* -- neeraj.bajaj@sun.com |
|
2506 |
*/ |
|
2507 |
||
2508 |
public QName getLastPoppedElement(){ |
|
2509 |
return fElements[fDepth]; |
|
2510 |
} |
|
2511 |
} // class ElementStack |
|
2512 |
||
2513 |
/** |
|
2514 |
* Drives the parser to the next state/event on the input. Parser is guaranteed |
|
2515 |
* to stop at the next state/event. |
|
2516 |
* |
|
2517 |
* Internally XML document is divided into several states. Each state represents |
|
2518 |
* a sections of XML document. When this functions returns normally, it has read |
|
2519 |
* the section of XML document and returns the state corresponding to section of |
|
2520 |
* document which has been read. For optimizations, a particular driver |
|
2521 |
* can read ahead of the section of document (state returned) just read and |
|
2522 |
* can maintain a different internal state. |
|
2523 |
* |
|
2524 |
* |
|
2525 |
* @author Neeraj Bajaj, Sun Microsystems |
|
2526 |
*/ |
|
2527 |
protected interface Driver { |
|
2528 |
||
2529 |
||
2530 |
/** |
|
2531 |
* Drives the parser to the next state/event on the input. Parser is guaranteed |
|
2532 |
* to stop at the next state/event. |
|
2533 |
* |
|
2534 |
* Internally XML document is divided into several states. Each state represents |
|
2535 |
* a sections of XML document. When this functions returns normally, it has read |
|
2536 |
* the section of XML document and returns the state corresponding to section of |
|
2537 |
* document which has been read. For optimizations, a particular driver |
|
2538 |
* can read ahead of the section of document (state returned) just read and |
|
2539 |
* can maintain a different internal state. |
|
2540 |
* |
|
2541 |
* @return state representing the section of document just read. |
|
2542 |
* |
|
2543 |
* @throws IOException Thrown on i/o error. |
|
2544 |
* @throws XNIException Thrown on parse error. |
|
2545 |
*/ |
|
2546 |
||
2547 |
public int next() throws IOException, XNIException; |
|
2548 |
||
2549 |
} // interface Driver |
|
2550 |
||
2551 |
/** |
|
2552 |
* Driver to handle content scanning. This driver is capable of reading |
|
2553 |
* the fragment of XML document. When it has finished reading fragment |
|
2554 |
* of XML documents, it can pass the job of reading to another driver. |
|
2555 |
* |
|
2556 |
* This class has been modified as per the new design which is more suited to |
|
2557 |
* efficiently build pull parser. Lot of performance improvements have been done and |
|
2558 |
* the code has been added to support stax functionality/features. |
|
2559 |
* |
|
2560 |
* @author Neeraj Bajaj, Sun Microsystems |
|
2561 |
* |
|
2562 |
* |
|
2563 |
* @author Andy Clark, IBM |
|
2564 |
* @author Eric Ye, IBM |
|
2565 |
*/ |
|
2566 |
protected class FragmentContentDriver |
|
2567 |
implements Driver { |
|
2568 |
||
2569 |
// |
|
2570 |
// Driver methods |
|
2571 |
// |
|
2572 |
private boolean fContinueDispatching = true; |
|
2573 |
private boolean fScanningForMarkup = true; |
|
2574 |
||
2575 |
/** |
|
2576 |
* decides the appropriate state of the parser |
|
2577 |
*/ |
|
2578 |
private void startOfMarkup() throws IOException { |
|
2579 |
fMarkupDepth++; |
|
2580 |
final int ch = fEntityScanner.peekChar(); |
|
2581 |
||
2582 |
switch(ch){ |
|
2583 |
case '?' :{ |
|
2584 |
setScannerState(SCANNER_STATE_PI); |
|
2585 |
fEntityScanner.skipChar(ch); |
|
2586 |
break; |
|
2587 |
} |
|
2588 |
case '!' :{ |
|
2589 |
fEntityScanner.skipChar(ch); |
|
2590 |
if (fEntityScanner.skipChar('-')) { |
|
2591 |
if (!fEntityScanner.skipChar('-')) { |
|
2592 |
reportFatalError("InvalidCommentStart", |
|
2593 |
null); |
|
2594 |
} |
|
2595 |
setScannerState(SCANNER_STATE_COMMENT); |
|
2596 |
} else if (fEntityScanner.skipString(cdata)) { |
|
2597 |
setScannerState(SCANNER_STATE_CDATA ); |
|
2598 |
} else if (!scanForDoctypeHook()) { |
|
2599 |
reportFatalError("MarkupNotRecognizedInContent", |
|
2600 |
null); |
|
2601 |
} |
|
2602 |
break; |
|
2603 |
} |
|
2604 |
case '/' :{ |
|
2605 |
setScannerState(SCANNER_STATE_END_ELEMENT_TAG); |
|
2606 |
fEntityScanner.skipChar(ch); |
|
2607 |
break; |
|
2608 |
} |
|
2609 |
default :{ |
|
2610 |
if (isValidNameStartChar(ch)) { |
|
2611 |
setScannerState(SCANNER_STATE_START_ELEMENT_TAG); |
|
2612 |
} else { |
|
2613 |
reportFatalError("MarkupNotRecognizedInContent", |
|
2614 |
null); |
|
2615 |
} |
|
2616 |
} |
|
2617 |
} |
|
2618 |
||
2619 |
}//startOfMarkup |
|
2620 |
||
2621 |
private void startOfContent() throws IOException { |
|
2622 |
if (fEntityScanner.skipChar('<')) { |
|
2623 |
setScannerState(SCANNER_STATE_START_OF_MARKUP); |
|
2624 |
} else if (fEntityScanner.skipChar('&')) { |
|
2625 |
setScannerState(SCANNER_STATE_REFERENCE) ; //XMLEvent.ENTITY_REFERENCE ); //SCANNER_STATE_REFERENCE |
|
2626 |
} else { |
|
2627 |
//element content is there.. |
|
2628 |
setScannerState(SCANNER_STATE_CHARACTER_DATA); |
|
2629 |
} |
|
2630 |
}//startOfContent |
|
2631 |
||
2632 |
||
2633 |
/** |
|
2634 |
* |
|
2635 |
* SCANNER_STATE_CONTENT and SCANNER_STATE_START_OF_MARKUP are two super states of the parser. |
|
2636 |
* At any point of time when in doubt over the current state of the parser, the state should be |
|
2637 |
* set to SCANNER_STATE_CONTENT. Parser will automatically revive itself and will set state of |
|
2638 |
* the parser to one of its sub state. |
|
2639 |
* sub states are defined in the parser on the basis of different XML component like |
|
2640 |
* SCANNER_STATE_ENTITY_REFERENCE , SCANNER_STATE_START_ELEMENT, SCANNER_STATE_CDATA etc.. |
|
2641 |
* These sub states help the parser to have fine control over the parsing. These are the |
|
2642 |
* different milepost, parser stops at each sub state (milepost). Based on this state it is |
|
2643 |
* decided if paresr needs to stop at next milepost ?? |
|
2644 |
* |
|
2645 |
*/ |
|
2646 |
public void decideSubState() throws IOException { |
|
2647 |
while( fScannerState == SCANNER_STATE_CONTENT || fScannerState == SCANNER_STATE_START_OF_MARKUP){ |
|
2648 |
||
2649 |
switch (fScannerState) { |
|
2650 |
||
2651 |
case SCANNER_STATE_CONTENT: { |
|
2652 |
startOfContent() ; |
|
2653 |
break; |
|
2654 |
} |
|
2655 |
||
2656 |
case SCANNER_STATE_START_OF_MARKUP: { |
|
2657 |
startOfMarkup() ; |
|
2658 |
break; |
|
2659 |
} |
|
2660 |
} |
|
2661 |
} |
|
2662 |
}//decideSubState |
|
2663 |
||
2664 |
/** |
|
2665 |
* Drives the parser to the next state/event on the input. Parser is guaranteed |
|
2666 |
* to stop at the next state/event. Internally XML document |
|
2667 |
* is divided into several states. Each state represents a sections of XML |
|
2668 |
* document. When this functions returns normally, it has read the section |
|
2669 |
* of XML document and returns the state corresponding to section of |
|
2670 |
* document which has been read. For optimizations, a particular driver |
|
2671 |
* can read ahead of the section of document (state returned) just read and |
|
2672 |
* can maintain a different internal state. |
|
2673 |
* |
|
2674 |
* State returned corresponds to Stax states. |
|
2675 |
* |
|
2676 |
* @return state representing the section of document just read. |
|
2677 |
* |
|
2678 |
* @throws IOException Thrown on i/o error. |
|
2679 |
* @throws XNIException Thrown on parse error. |
|
2680 |
*/ |
|
2681 |
||
2682 |
public int next() throws IOException, XNIException { |
|
2683 |
while (true) { |
|
2684 |
try { |
|
2685 |
if(DEBUG_NEXT){ |
|
2686 |
System.out.println("NOW IN FragmentContentDriver"); |
|
2687 |
System.out.println("Entering the FragmentContentDriver with = " + getScannerStateName(fScannerState)); |
|
2688 |
} |
|
2689 |
||
2690 |
//decide the actual sub state of the scanner.For more information refer to the javadoc of |
|
2691 |
//decideSubState. |
|
2692 |
||
2693 |
switch (fScannerState) { |
|
2694 |
case SCANNER_STATE_CONTENT: { |
|
2695 |
final int ch = fEntityScanner.peekChar(); |
|
2696 |
if (ch == '<') { |
|
2697 |
fEntityScanner.scanChar(); |
|
2698 |
setScannerState(SCANNER_STATE_START_OF_MARKUP); |
|
2699 |
} else if (ch == '&') { |
|
2700 |
fEntityScanner.scanChar(); |
|
2701 |
setScannerState(SCANNER_STATE_REFERENCE) ; //XMLEvent.ENTITY_REFERENCE ); //SCANNER_STATE_REFERENCE |
|
2702 |
break; |
|
2703 |
} else { |
|
2704 |
//element content is there.. |
|
2705 |
setScannerState(SCANNER_STATE_CHARACTER_DATA); |
|
2706 |
break; |
|
2707 |
} |
|
2708 |
} |
|
2709 |
||
2710 |
case SCANNER_STATE_START_OF_MARKUP: { |
|
2711 |
startOfMarkup(); |
|
2712 |
break; |
|
2713 |
}//case: SCANNER_STATE_START_OF_MARKUP |
|
2714 |
||
2715 |
}//end of switch |
|
2716 |
//decideSubState() ; |
|
2717 |
||
2718 |
//do some special handling if isCoalesce is set to true. |
|
2719 |
if(fIsCoalesce){ |
|
2720 |
fUsebuffer = true ; |
|
2721 |
//if the last section was character data |
|
2722 |
if(fLastSectionWasCharacterData){ |
|
2723 |
||
2724 |
//if we dont encounter any CDATA or ENITY REFERENCE and current state is also not SCANNER_STATE_CHARACTER_DATA |
|
2725 |
//return the last scanned charactrer data. |
|
2726 |
if((fScannerState != SCANNER_STATE_CDATA) && (fScannerState != SCANNER_STATE_REFERENCE) |
|
2727 |
&& (fScannerState != SCANNER_STATE_CHARACTER_DATA)){ |
|
2728 |
fLastSectionWasCharacterData = false; |
|
2729 |
return XMLEvent.CHARACTERS; |
|
2730 |
} |
|
2731 |
}//if last section was CDATA or ENTITY REFERENCE |
|
2732 |
//xxx: there might be another entity reference or CDATA after this |
|
2733 |
//<foo>blah blah &<<![CDATA[[aa]]>blah blah</foo> |
|
2734 |
else if((fLastSectionWasCData || fLastSectionWasEntityReference)){ |
|
2735 |
//and current state is not SCANNER_STATE_CHARACTER_DATA |
|
2736 |
//or SCANNER_STATE_CDATA or SCANNER_STATE_REFERENCE |
|
2737 |
//this means there is nothing more to be coalesced. |
|
2738 |
//return the CHARACTERS event. |
|
2739 |
if((fScannerState != SCANNER_STATE_CDATA) && (fScannerState != SCANNER_STATE_REFERENCE) |
|
2740 |
&& (fScannerState != SCANNER_STATE_CHARACTER_DATA)){ |
|
2741 |
||
2742 |
fLastSectionWasCData = false; |
|
2743 |
fLastSectionWasEntityReference = false; |
|
2744 |
return XMLEvent.CHARACTERS; |
|
2745 |
} |
|
2746 |
} |
|
2747 |
} |
|
2748 |
||
2749 |
||
2750 |
if(DEBUG_NEXT){ |
|
2751 |
System.out.println("Actual scanner state set by decideSubState is = " + getScannerStateName(fScannerState)); |
|
2752 |
} |
|
2753 |
||
2754 |
switch(fScannerState){ |
|
2755 |
||
2756 |
case XMLEvent.START_DOCUMENT : |
|
2757 |
return XMLEvent.START_DOCUMENT; |
|
2758 |
||
2759 |
case SCANNER_STATE_START_ELEMENT_TAG :{ |
|
2760 |
||
2761 |
//xxx this function returns true when element is empty.. can be linked to end element event. |
|
2762 |
//returns true if the element is empty |
|
2763 |
fEmptyElement = scanStartElement() ; |
|
2764 |
//if the element is empty the next event is "end element" |
|
2765 |
if(fEmptyElement){ |
|
2766 |
setScannerState(SCANNER_STATE_END_ELEMENT_TAG); |
|
2767 |
}else{ |
|
2768 |
//set the next possible state |
|
2769 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2770 |
} |
|
2771 |
return XMLEvent.START_ELEMENT ; |
|
2772 |
} |
|
2773 |
||
2774 |
case SCANNER_STATE_CHARACTER_DATA: { |
|
2775 |
if(DEBUG_COALESCE){ |
|
2776 |
System.out.println("fLastSectionWasCData = " + fLastSectionWasCData); |
|
2777 |
System.out.println("fIsCoalesce = " + fIsCoalesce); |
|
2778 |
} |
|
2779 |
//if last section was either entity reference or cdata or character data we should be using buffer |
|
2780 |
fUsebuffer = fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData ; |
|
2781 |
||
2782 |
//When coalesce is set to true and last state was REFERENCE or CDATA or CHARACTER_DATA, buffer should not be cleared. |
|
2783 |
if( fIsCoalesce && (fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData) ){ |
|
2784 |
fLastSectionWasEntityReference = false; |
|
2785 |
fLastSectionWasCData = false; |
|
2786 |
fLastSectionWasCharacterData = true ; |
|
2787 |
fUsebuffer = true; |
|
2788 |
}else{ |
|
2789 |
//clear the buffer |
|
2790 |
fContentBuffer.clear(); |
|
2791 |
} |
|
2792 |
||
2793 |
//set the fTempString length to 0 before passing it on to scanContent |
|
2794 |
//scanContent sets the correct co-ordinates as per the content read |
|
2795 |
fTempString.length = 0; |
|
2796 |
int c = fEntityScanner.scanContent(fTempString); |
|
2797 |
if(DEBUG){ |
|
2798 |
System.out.println("fTempString = " + fTempString); |
|
2799 |
} |
|
2800 |
if(fEntityScanner.skipChar('<')){ |
|
2801 |
//check if we have reached end of element |
|
2802 |
if(fEntityScanner.skipChar('/')){ |
|
2803 |
//increase the mark up depth |
|
2804 |
fMarkupDepth++; |
|
2805 |
fLastSectionWasCharacterData = false; |
|
2806 |
setScannerState(SCANNER_STATE_END_ELEMENT_TAG); |
|
2807 |
//check if its start of new element |
|
2808 |
}else if(XMLChar.isNameStart(fEntityScanner.peekChar())){ |
|
2809 |
fMarkupDepth++; |
|
2810 |
fLastSectionWasCharacterData = false; |
|
2811 |
setScannerState(SCANNER_STATE_START_ELEMENT_TAG); |
|
2812 |
}else{ |
|
2813 |
setScannerState(SCANNER_STATE_START_OF_MARKUP); |
|
2814 |
//there can be cdata ahead if coalesce is true we should call again |
|
2815 |
if(fIsCoalesce){ |
|
2816 |
fUsebuffer = true; |
|
2817 |
fLastSectionWasCharacterData = true; |
|
2818 |
fContentBuffer.append(fTempString); |
|
2819 |
fTempString.length = 0; |
|
2820 |
continue; |
|
2821 |
} |
|
2822 |
} |
|
2823 |
//in case last section was either entity reference or cdata or character data -- we should be using buffer |
|
2824 |
if(fUsebuffer){ |
|
2825 |
fContentBuffer.append(fTempString); |
|
2826 |
fTempString.length = 0; |
|
2827 |
} |
|
2828 |
if(DEBUG){ |
|
2829 |
System.out.println("NOT USING THE BUFFER, STRING = " + fTempString.toString()); |
|
2830 |
} |
|
2831 |
if(dtdGrammarUtil!= null && dtdGrammarUtil.isIgnorableWhiteSpace(fContentBuffer)){ |
|
2832 |
if(DEBUG)System.out.println("Return SPACE EVENT"); |
|
2833 |
return XMLEvent.SPACE; |
|
2834 |
}else |
|
2835 |
return XMLEvent.CHARACTERS; |
|
2836 |
||
2837 |
} else{ |
|
2838 |
fUsebuffer = true ; |
|
2839 |
if(DEBUG){ |
|
2840 |
System.out.println("fContentBuffer = " + fContentBuffer); |
|
2841 |
System.out.println("fTempString = " + fTempString); |
|
2842 |
} |
|
2843 |
fContentBuffer.append(fTempString); |
|
2844 |
fTempString.length = 0; |
|
2845 |
} |
|
2846 |
if (c == '\r') { |
|
2847 |
if(DEBUG){ |
|
2848 |
System.out.println("'\r' character found"); |
|
2849 |
} |
|
2850 |
// happens when there is the character reference |
|
2851 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry |
|
2852 |
fEntityScanner.scanChar(); |
|
2853 |
fUsebuffer = true; |
|
2854 |
fContentBuffer.append((char)c); |
|
2855 |
c = -1 ; |
|
2856 |
} else if (c == ']') { |
|
2857 |
//fStringBuffer.clear(); |
|
2858 |
//xxx: We know the next chracter.. we should just skip it and add ']' directlry |
|
2859 |
fUsebuffer = true; |
|
2860 |
fContentBuffer.append((char)fEntityScanner.scanChar()); |
|
2861 |
// remember where we are in case we get an endEntity before we |
|
2862 |
// could flush the buffer out - this happens when we're parsing an |
|
2863 |
// entity which ends with a ] |
|
2864 |
fInScanContent = true; |
|
2865 |
||
2866 |
// We work on a single character basis to handle cases such as: |
|
2867 |
// ']]]>' which we might otherwise miss. |
|
2868 |
// |
|
2869 |
if (fEntityScanner.skipChar(']')) { |
|
2870 |
fContentBuffer.append(']'); |
|
2871 |
while (fEntityScanner.skipChar(']')) { |
|
2872 |
fContentBuffer.append(']'); |
|
2873 |
} |
|
2874 |
if (fEntityScanner.skipChar('>')) { |
|
2875 |
reportFatalError("CDEndInContent", null); |
|
2876 |
} |
|
2877 |
} |
|
2878 |
c = -1 ; |
|
2879 |
fInScanContent = false; |
|
2880 |
} |
|
2881 |
||
2882 |
do{ |
|
2883 |
//xxx: we should be using only one buffer.. |
|
2884 |
// we need not to grow the buffer only when isCoalesce() is not true; |
|
2885 |
||
2886 |
if (c == '<') { |
|
2887 |
fEntityScanner.scanChar(); |
|
2888 |
setScannerState(SCANNER_STATE_START_OF_MARKUP); |
|
2889 |
break; |
|
2890 |
}//xxx what should be the behavior if entity reference is present in the content ? |
|
2891 |
else if (c == '&') { |
|
2892 |
fEntityScanner.scanChar(); |
|
2893 |
setScannerState(SCANNER_STATE_REFERENCE); |
|
2894 |
break; |
|
2895 |
}///xxx since this part is also characters, it should be merged... |
|
2896 |
else if (c != -1 && isInvalidLiteral(c)) { |
|
2897 |
if (XMLChar.isHighSurrogate(c)) { |
|
2898 |
// special case: surrogates |
|
2899 |
scanSurrogates(fContentBuffer) ; |
|
2900 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2901 |
} else { |
|
2902 |
reportFatalError("InvalidCharInContent", |
|
2903 |
new Object[] { |
|
2904 |
Integer.toString(c, 16)}); |
|
2905 |
fEntityScanner.scanChar(); |
|
2906 |
} |
|
2907 |
break; |
|
2908 |
} |
|
2909 |
//xxx: scanContent also gives character callback. |
|
2910 |
c = scanContent(fContentBuffer) ; |
|
2911 |
//we should not be iterating again if fIsCoalesce is not set to true |
|
2912 |
||
2913 |
if(!fIsCoalesce){ |
|
2914 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2915 |
break; |
|
2916 |
} |
|
2917 |
||
2918 |
}while(true); |
|
2919 |
||
2920 |
//if (fDocumentHandler != null) { |
|
2921 |
// fDocumentHandler.characters(fContentBuffer, null); |
|
2922 |
//} |
|
2923 |
if(DEBUG)System.out.println("USING THE BUFFER, STRING START=" + fContentBuffer.toString() +"=END"); |
|
2924 |
//if fIsCoalesce is true there might be more data so call fDriver.next() |
|
2925 |
if(fIsCoalesce){ |
|
2926 |
fLastSectionWasCharacterData = true ; |
|
2927 |
continue; |
|
2928 |
}else{ |
|
2929 |
if(dtdGrammarUtil!= null && dtdGrammarUtil.isIgnorableWhiteSpace(fContentBuffer)){ |
|
2930 |
if(DEBUG)System.out.println("Return SPACE EVENT"); |
|
2931 |
return XMLEvent.SPACE; |
|
2932 |
} else |
|
2933 |
return XMLEvent.CHARACTERS ; |
|
2934 |
} |
|
2935 |
} |
|
2936 |
||
2937 |
case SCANNER_STATE_END_ELEMENT_TAG :{ |
|
2938 |
if(fEmptyElement){ |
|
2939 |
//set it back to false. |
|
2940 |
fEmptyElement = false; |
|
2941 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2942 |
//check the case when there is comment after single element document |
|
2943 |
//<foo/> and some comment after this |
|
2944 |
return (fMarkupDepth == 0 && elementDepthIsZeroHook() ) ? XMLEvent.END_ELEMENT : XMLEvent.END_ELEMENT ; |
|
2945 |
||
2946 |
} else if(scanEndElement() == 0) { |
|
2947 |
//It is last element of the document |
|
2948 |
if (elementDepthIsZeroHook()) { |
|
2949 |
//if element depth is zero , it indicates the end of the document |
|
2950 |
//the state shouldn't be set, because it is set by elementDepthIsZeroHook() function |
|
2951 |
//xxx understand this point once again.. |
|
2952 |
return XMLEvent.END_ELEMENT ; |
|
2953 |
} |
|
2954 |
||
2955 |
} |
|
2956 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2957 |
return XMLEvent.END_ELEMENT ; |
|
2958 |
} |
|
2959 |
||
2960 |
case SCANNER_STATE_COMMENT: { //SCANNER_STATE_COMMENT: |
|
2961 |
scanComment(); |
|
2962 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2963 |
return XMLEvent.COMMENT; |
|
2964 |
//break; |
|
2965 |
} |
|
2966 |
case SCANNER_STATE_PI:{ //SCANNER_STATE_PI: { |
|
2967 |
//clear the buffer first |
|
2968 |
fContentBuffer.clear() ; |
|
2969 |
//xxx: which buffer should be passed. Ideally we shouldn't have |
|
2970 |
//more than two buffers -- |
|
2971 |
//xxx: where should we add the switch for buffering. |
|
2972 |
scanPI(fContentBuffer); |
|
2973 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2974 |
return XMLEvent.PROCESSING_INSTRUCTION; |
|
2975 |
//break; |
|
2976 |
} |
|
2977 |
case SCANNER_STATE_CDATA :{ //SCANNER_STATE_CDATA: { |
|
2978 |
//xxx: What if CDATA is the first event |
|
2979 |
//<foo><![CDATA[hello<><>]]>append</foo> |
|
2980 |
||
2981 |
//we should not clear the buffer only when the last state was either SCANNER_STATE_REFERENCE or |
|
2982 |
//SCANNER_STATE_CHARACTER_DATA or SCANNER_STATE_REFERENCE |
|
2983 |
if(fIsCoalesce && ( fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData)){ |
|
2984 |
fLastSectionWasCData = true ; |
|
2985 |
fLastSectionWasEntityReference = false; |
|
2986 |
fLastSectionWasCharacterData = false; |
|
2987 |
}//if we dont need to coalesce clear the buffer |
|
2988 |
else{ |
|
2989 |
fContentBuffer.clear(); |
|
2990 |
} |
|
2991 |
fUsebuffer = true; |
|
2992 |
//CDATA section is completely read in all the case. |
|
2993 |
scanCDATASection(fContentBuffer , true); |
|
2994 |
setScannerState(SCANNER_STATE_CONTENT); |
|
2995 |
//1. if fIsCoalesce is set to true we set the variable fLastSectionWasCData to true |
|
2996 |
//and just call fDispatche.next(). Since we have set the scanner state to |
|
2997 |
//SCANNER_STATE_CONTENT (super state) parser will automatically recover and |
|
2998 |
//behave appropriately. When isCoalesce is set to true we dont need to reportCDATA event |
|
2999 |
//2. Check if application has set for reporting CDATA event |
|
3000 |
//3. if the application has neither set the fIsCoalesce to true nor fReportCdataEvent |
|
3001 |
//return the cdata event as characters. |
|
3002 |
if(fIsCoalesce){ |
|
3003 |
fLastSectionWasCData = true ; |
|
3004 |
//there might be more data to coalesce. |
|
3005 |
continue; |
|
3006 |
}else if(fReportCdataEvent){ |
|
3007 |
return XMLEvent.CDATA; |
|
3008 |
} else{ |
|
3009 |
return XMLEvent.CHARACTERS; |
|
3010 |
} |
|
3011 |
} |
|
3012 |
||
3013 |
case SCANNER_STATE_REFERENCE :{ |
|
3014 |
fMarkupDepth++; |
|
3015 |
foundBuiltInRefs = false; |
|
3016 |
||
3017 |
//we should not clear the buffer only when the last state was either CDATA or |
|
3018 |
//SCANNER_STATE_CHARACTER_DATA or SCANNER_STATE_REFERENCE |
|
3019 |
if(fIsCoalesce && ( fLastSectionWasEntityReference || fLastSectionWasCData || fLastSectionWasCharacterData)){ |
|
3020 |
//fLastSectionWasEntityReference or fLastSectionWasCData are only |
|
3021 |
//used when fIsCoalesce is set to true. |
|
3022 |
fLastSectionWasEntityReference = true ; |
|
3023 |
fLastSectionWasCData = false; |
|
3024 |
fLastSectionWasCharacterData = false; |
|
3025 |
}//if we dont need to coalesce clear the buffer |
|
3026 |
else{ |
|
3027 |
fContentBuffer.clear(); |
|
3028 |
} |
|
3029 |
fUsebuffer = true ; |
|
3030 |
//take care of character reference |
|
3031 |
if (fEntityScanner.skipChar('#')) { |
|
3032 |
scanCharReferenceValue(fContentBuffer, null); |
|
3033 |
fMarkupDepth--; |
|
3034 |
if(!fIsCoalesce){ |
|
3035 |
setScannerState(SCANNER_STATE_CONTENT); |
|
3036 |
return XMLEvent.CHARACTERS; |
|
3037 |
} |
|
3038 |
} else { |
|
3039 |
// this function also starts new entity |
|
3040 |
scanEntityReference(fContentBuffer); |
|
3041 |
//if there was built-in entity reference & coalesce is not true |
|
3042 |
//return CHARACTERS |
|
3043 |
if(fScannerState == SCANNER_STATE_BUILT_IN_REFS && !fIsCoalesce){ |
|
3044 |
setScannerState(SCANNER_STATE_CONTENT); |
|
3045 |
return XMLEvent.CHARACTERS; |
|
3046 |
} |
|
3047 |
||
3048 |
//if there was a text declaration, call next() it will be taken care. |
|
3049 |
if(fScannerState == SCANNER_STATE_TEXT_DECL){ |
|
3050 |
fLastSectionWasEntityReference = true ; |
|
3051 |
continue; |
|
3052 |
} |
|
3053 |
||
3054 |
if(fScannerState == SCANNER_STATE_REFERENCE){ |
|
3055 |
setScannerState(SCANNER_STATE_CONTENT); |
|
3056 |
if (fReplaceEntityReferences && fEntityStore.isDeclaredEntity(fCurrentEntityName)) { |
|
3057 |
// Skip the entity reference, we don't care |
|
3058 |
continue; |
|
3059 |
} |
|
3060 |
return XMLEvent.ENTITY_REFERENCE; |
|
3061 |
} |
|
3062 |
} |
|
3063 |
//Wether it was character reference, entity reference or built-in entity |
|
3064 |
//set the next possible state to SCANNER_STATE_CONTENT |
|
3065 |
setScannerState(SCANNER_STATE_CONTENT); |
|
3066 |
fLastSectionWasEntityReference = true ; |
|
3067 |
continue; |
|
3068 |
} |
|
3069 |
||
3070 |
case SCANNER_STATE_TEXT_DECL: { |
|
3071 |
// scan text decl |
|
3072 |
if (fEntityScanner.skipString("<?xml")) { |
|
3073 |
fMarkupDepth++; |
|
3074 |
// NOTE: special case where entity starts with a PI |
|
3075 |
// whose name starts with "xml" (e.g. "xmlfoo") |
|
3076 |
if (isValidNameChar(fEntityScanner.peekChar())) { |
|
3077 |
fStringBuffer.clear(); |
|
3078 |
fStringBuffer.append("xml"); |
|
3079 |
||
3080 |
if (fNamespaces) { |
|
3081 |
while (isValidNCName(fEntityScanner.peekChar())) { |
|
3082 |
fStringBuffer.append((char)fEntityScanner.scanChar()); |
|
3083 |
} |
|
3084 |
} else { |
|
3085 |
while (isValidNameChar(fEntityScanner.peekChar())) { |
|
3086 |
fStringBuffer.append((char)fEntityScanner.scanChar()); |
|
3087 |
} |
|
3088 |
} |
|
3089 |
String target = fSymbolTable.addSymbol(fStringBuffer.ch, fStringBuffer.offset, fStringBuffer.length); |
|
3090 |
fContentBuffer.clear(); |
|
3091 |
scanPIData(target, fContentBuffer); |
|
3092 |
} |
|
3093 |
||
3094 |
// standard text declaration |
|
3095 |
else { |
|
3096 |
//xxx: this function gives callback |
|
3097 |
scanXMLDeclOrTextDecl(true); |
|
3098 |
} |
|
3099 |
} |
|
3100 |
// now that we've straightened out the readers, we can read in chunks: |
|
3101 |
fEntityManager.fCurrentEntity.mayReadChunks = true; |
|
3102 |
setScannerState(SCANNER_STATE_CONTENT); |
|
3103 |
//xxx: we don't return any state, so how do we get to know about TEXT declarations. |
|
3104 |
//it seems we have to careful when to allow function issue a callback |
|
3105 |
//and when to allow adapter issue a callback. |
|
3106 |
continue; |
|
3107 |
} |
|
3108 |
||
3109 |
||
3110 |
case SCANNER_STATE_ROOT_ELEMENT: { |
|
3111 |
if (scanRootElementHook()) { |
|
3112 |
fEmptyElement = true; |
|
3113 |
//rest would be taken care by fTrailingMiscDriver set by scanRootElementHook |
|
3114 |
return XMLEvent.START_ELEMENT; |
|
3115 |
} |
|
3116 |
setScannerState(SCANNER_STATE_CONTENT); |
|
3117 |
return XMLEvent.START_ELEMENT ; |
|
3118 |
} |
|
3119 |
case SCANNER_STATE_CHAR_REFERENCE : { |
|
3120 |
fContentBuffer.clear(); |
|
3121 |
scanCharReferenceValue(fContentBuffer, null); |
|
3122 |
fMarkupDepth--; |
|
3123 |
setScannerState(SCANNER_STATE_CONTENT); |
|
3124 |
return XMLEvent.CHARACTERS; |
|
3125 |
} |
|
3126 |
default: |
|
3127 |
throw new XNIException("Scanner State " + fScannerState + " not Recognized "); |
|
3128 |
||
3129 |
}//switch |
|
3130 |
} |
|
3131 |
// premature end of file |
|
3132 |
catch (EOFException e) { |
|
3133 |
endOfFileHook(e); |
|
3134 |
return -1; |
|
3135 |
} |
|
3136 |
} //while loop |
|
3137 |
}//next |
|
3138 |
||
3139 |
||
3140 |
// |
|
3141 |
// Protected methods |
|
3142 |
// |
|
3143 |
||
3144 |
// hooks |
|
3145 |
||
3146 |
// NOTE: These hook methods are added so that the full document |
|
3147 |
// scanner can share the majority of code with this class. |
|
3148 |
||
3149 |
/** |
|
3150 |
* Scan for DOCTYPE hook. This method is a hook for subclasses |
|
3151 |
* to add code to handle scanning for a the "DOCTYPE" string |
|
3152 |
* after the string "<!" has been scanned. |
|
3153 |
* |
|
3154 |
* @return True if the "DOCTYPE" was scanned; false if "DOCTYPE" |
|
3155 |
* was not scanned. |
|
3156 |
*/ |
|
3157 |
protected boolean scanForDoctypeHook() |
|
3158 |
throws IOException, XNIException { |
|
3159 |
return false; |
|
3160 |
} // scanForDoctypeHook():boolean |
|
3161 |
||
3162 |
/** |
|
3163 |
* Element depth iz zero. This methos is a hook for subclasses |
|
3164 |
* to add code to handle when the element depth hits zero. When |
|
3165 |
* scanning a document fragment, an element depth of zero is |
|
3166 |
* normal. However, when scanning a full XML document, the |
|
3167 |
* scanner must handle the trailing miscellanous section of |
|
3168 |
* the document after the end of the document's root element. |
|
3169 |
* |
|
3170 |
* @return True if the caller should stop and return true which |
|
3171 |
* allows the scanner to switch to a new scanning |
|
3172 |
* driver. A return value of false indicates that |
|
3173 |
* the content driver should continue as normal. |
|
3174 |
*/ |
|
3175 |
protected boolean elementDepthIsZeroHook() |
|
3176 |
throws IOException, XNIException { |
|
3177 |
return false; |
|
3178 |
} // elementDepthIsZeroHook():boolean |
|
3179 |
||
3180 |
/** |
|
3181 |
* Scan for root element hook. This method is a hook for |
|
3182 |
* subclasses to add code that handles scanning for the root |
|
3183 |
* element. When scanning a document fragment, there is no |
|
3184 |
* "root" element. However, when scanning a full XML document, |
|
3185 |
* the scanner must handle the root element specially. |
|
3186 |
* |
|
3187 |
* @return True if the caller should stop and return true which |
|
3188 |
* allows the scanner to switch to a new scanning |
|
3189 |
* driver. A return value of false indicates that |
|
3190 |
* the content driver should continue as normal. |
|
3191 |
*/ |
|
3192 |
protected boolean scanRootElementHook() |
|
3193 |
throws IOException, XNIException { |
|
3194 |
return false; |
|
3195 |
} // scanRootElementHook():boolean |
|
3196 |
||
3197 |
/** |
|
3198 |
* End of file hook. This method is a hook for subclasses to |
|
3199 |
* add code that handles the end of file. The end of file in |
|
3200 |
* a document fragment is OK if the markup depth is zero. |
|
3201 |
* However, when scanning a full XML document, an end of file |
|
3202 |
* is always premature. |
|
3203 |
*/ |
|
3204 |
protected void endOfFileHook(EOFException e) |
|
3205 |
throws IOException, XNIException { |
|
3206 |
||
3207 |
// NOTE: An end of file is only only an error if we were |
|
3208 |
// in the middle of scanning some markup. -Ac |
|
3209 |
if (fMarkupDepth != 0) { |
|
3210 |
reportFatalError("PrematureEOF", null); |
|
3211 |
} |
|
3212 |
||
3213 |
} // endOfFileHook() |
|
3214 |
||
3215 |
} // class FragmentContentDriver |
|
3216 |
||
3217 |
static void pr(String str) { |
|
3218 |
System.out.println(str) ; |
|
3219 |
} |
|
3220 |
||
3221 |
protected boolean fUsebuffer ; |
|
3222 |
||
3223 |
/** this function gets an XMLString (which is used to store the attribute value) from the special pool |
|
3224 |
* maintained for attributes. |
|
3225 |
* fAttributeCacheUsedCount tracks the number of attributes that has been consumed from the pool. |
|
3226 |
* if all the attributes has been consumed, it adds a new XMLString inthe pool and returns the same |
|
3227 |
* XMLString. |
|
3228 |
* |
|
3229 |
* @return XMLString XMLString used to store an attribute value. |
|
3230 |
*/ |
|
3231 |
||
3232 |
protected XMLString getString(){ |
|
3233 |
if(fAttributeCacheUsedCount < initialCacheCount || fAttributeCacheUsedCount < attributeValueCache.size()){ |
|
3234 |
return (XMLString)attributeValueCache.get(fAttributeCacheUsedCount++); |
|
3235 |
} else{ |
|
3236 |
XMLString str = new XMLString(); |
|
3237 |
fAttributeCacheUsedCount++; |
|
3238 |
attributeValueCache.add(str); |
|
3239 |
return str; |
|
3240 |
} |
|
3241 |
} |
|
3242 |
||
3243 |
/** |
|
3244 |
* Implements XMLBufferListener interface. |
|
3245 |
*/ |
|
3246 |
||
3247 |
public void refresh(){ |
|
3248 |
refresh(0); |
|
3249 |
} |
|
3250 |
||
3251 |
/** |
|
3252 |
* receives callbacks from {@link XMLEntityReader } when buffer |
|
3253 |
* is being changed. |
|
3254 |
* @param refreshPosition |
|
3255 |
*/ |
|
3256 |
public void refresh(int refreshPosition){ |
|
3257 |
//If you are reading attributes and you got a callback |
|
3258 |
//cache available attributes. |
|
3259 |
if(fReadingAttributes){ |
|
3260 |
fAttributes.refresh(); |
|
3261 |
} |
|
3262 |
if(fScannerState == SCANNER_STATE_CHARACTER_DATA){ |
|
3263 |
//since fTempString directly matches to the underlying main buffer |
|
3264 |
//store the data into buffer |
|
3265 |
fContentBuffer.append(fTempString); |
|
3266 |
//clear the XMLString so that data can't be added again. |
|
3267 |
fTempString.length = 0; |
|
3268 |
fUsebuffer = true; |
|
3269 |
} |
|
3270 |
} |
|
3271 |
||
3272 |
} // class XMLDocumentFragmentScannerImpl |