author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:32:13 +0100 | |
branch | RCL_3 |
changeset 18 | 04b7640f6fb5 |
parent 0 | 05da4621cfb2 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Parses XML file to DOM Document |
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* |
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*/ |
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|
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|
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package com.nokia.tools.themeinstaller.xmlparser; |
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import java.io.IOException; |
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import javax.xml.parsers.DocumentBuilder; |
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import javax.xml.parsers.DocumentBuilderFactory; |
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import javax.xml.parsers.ParserConfigurationException; |
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import org.xml.sax.SAXException; |
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import com.nokia.tools.themeinstaller.logger.LogWriter; |
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import com.nokia.tools.themeinstaller.odtconverter.IParseOperationListener; |
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import com.nokia.tools.themeinstaller.odtconverter.ParseOperation; |
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/** |
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* Parses XML File to DOM Document. |
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*/ |
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public class XMLParser extends ParseOperation implements Runnable |
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{ |
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// CONSTANTS |
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// Document Builder Factory and Parser configuration |
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private static final String DBF_KEY = |
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"javax.xml.parsers.DocumentBuilderFactory"; |
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private static final String DBF_VALUE = |
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"org.apache.xerces.jaxp.DocumentBuilderFactoryImpl"; |
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private static final String PARSER_CONFIG_KEY = |
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"org.apache.xerces.xni.parser.XMLParserConfiguration"; |
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private static final String PARSER_CONFIG_VALUE = |
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"org.apache.xerces.parsers.XIncludeAwareParserConfiguration"; |
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/** The Document Builder. */ |
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private DocumentBuilder iDocumentBuilder; |
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/** XML file name */ |
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private String iFileName; |
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/** |
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* Static block. |
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*/ |
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static |
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{ |
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// Configure the Document Builder Factory |
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System.setProperty( DBF_KEY, DBF_VALUE ); |
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// Configure the XML Parser Configuration |
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System.setProperty( PARSER_CONFIG_KEY, PARSER_CONFIG_VALUE ); |
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} |
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/** |
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* Instantiates a new XML parser without an external DTD file. |
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* |
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* @param aFileName the XML file name |
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*/ |
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public XMLParser( String aFileName ) |
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{ |
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this( aFileName, null ); |
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} |
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|
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/** |
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* Instantiates a new XML parser. External DTD file can be used instead of |
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* the one defined in the DOCTYPE. |
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* |
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* @param aFileName the XML file name |
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* @param aExtDTD the DTD file name. If an external DTD is not specified, |
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* Expand Entity References feature is disabled. This causes the |
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* localisation to be left untouched. |
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*/ |
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public XMLParser( String aFileName, String aExtDTD ) |
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{ |
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super(); |
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DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); |
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dbf.setNamespaceAware( true ); |
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try |
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{ |
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if( aExtDTD == null ) |
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{ |
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// Disable expanding of entity references to leave localisation |
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// untouched |
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dbf.setExpandEntityReferences( false ); |
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|
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// Disable the loading of external DTD file because expanding |
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// entity references (the localisation) is disabled anyway |
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dbf.setFeature( |
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"http://apache.org/xml/features/nonvalidating/load-external-dtd", |
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false ); |
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} |
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// Enable XIncludes in XML parsing |
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dbf.setXIncludeAware( true ); |
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// Disable the adding of XInclude parsing related attributes: |
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// xml:base and xml:lang |
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dbf.setFeature( |
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"http://apache.org/xml/features/xinclude/fixup-base-uris", |
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false ); |
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dbf.setFeature( |
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"http://apache.org/xml/features/xinclude/fixup-language", |
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false ); |
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// Instantiate the Document Builder for parsing |
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iDocumentBuilder = dbf.newDocumentBuilder(); |
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|
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if( aExtDTD != null ) |
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{ |
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// Use entity resolver for using an external DTD file |
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iDocumentBuilder.setEntityResolver( |
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new DTDEntityResolver( aExtDTD ) ); |
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} |
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} |
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catch ( ParserConfigurationException e ) |
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{ |
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throw new IllegalStateException( "Could not load XML parser: " + e.toString() ); |
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} |
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|
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iFileName = aFileName; |
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} |
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|
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/** |
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* Run the XML parse operation. |
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*/ |
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public void run() |
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{ |
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// Messages for operation listener |
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int error = IParseOperationListener.OPERATION_SUCCESSFUL; |
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String reason = null; |
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try |
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{ |
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// Actual parsing |
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LogWriter.getInstance().logInfo( |
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this.getClass().getSimpleName() + ": Parsing " + iFileName ); |
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iDOMDocument = iDocumentBuilder.parse( iFileName ); |
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} |
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catch ( SAXException e ) |
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{ |
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reason = e.getMessage(); |
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error = IParseOperationListener.SAX_PARSE_ERROR; |
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} |
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catch ( IOException e ) |
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{ |
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reason = e.getMessage(); |
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error = IParseOperationListener.IO_ERROR; |
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} |
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|
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super.operationCompleted( error, reason ); |
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} |
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|
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/** |
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* Starts XML parsing in a new thread. |
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*/ |
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public void parse() |
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{ |
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Thread thread = new Thread( this ); |
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thread.start(); |
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} |
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} |