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Diffstat (limited to 'xmerge/java/org/openoffice/xmerge/util/registry/ConverterInfoReader.java')
| -rw-r--r-- | xmerge/java/org/openoffice/xmerge/util/registry/ConverterInfoReader.java | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/xmerge/java/org/openoffice/xmerge/util/registry/ConverterInfoReader.java b/xmerge/java/org/openoffice/xmerge/util/registry/ConverterInfoReader.java new file mode 100644 index 000000000000..77c3ed757447 --- /dev/null +++ b/xmerge/java/org/openoffice/xmerge/util/registry/ConverterInfoReader.java @@ -0,0 +1,282 @@ +/************************************************************************ + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2008 by Sun Microsystems, Inc. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: ConverterInfoReader.java,v $ + * $Revision: 1.3 $ + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +package org.openoffice.xmerge.util.registry; + +import java.io.*; +import java.util.*; +import java.util.jar.*; +import org.xml.sax.*; +import org.w3c.dom.*; +import javax.xml.parsers.*; +import java.net.URL; +import java.net.JarURLConnection; + +/** + * The <code>ConverterInfoReader</code> pulls a META-INF/converter.xml + * file out of a jar file and parses it, providing access to this + * information in a <code>Vector</code> of <code>ConverterInfo</code> + * objects. + * + * @author Brian Cameron + */ +public class ConverterInfoReader { + + private final static String TAG_CONVERTER = "converter"; + private final static String ATTRIB_OFFICE_TYPE = "type"; + private final static String ATTRIB_VERSION = "version"; + private final static String TAG_NAME = "converter-display-name"; + private final static String TAG_DESC = "converter-description"; + private final static String TAG_VENDOR = "converter-vendor"; + private final static String TAG_CLASS_IMPL = "converter-class-impl"; + private final static String TAG_TARGET = "converter-target"; + private final static String ATTRIB_DEVICE_TYPE = "type"; + private final static String TAG_XSLT_DESERIAL = "converter-xslt-deserialize"; + private final static String TAG_XSLT_SERIAL = "converter-xslt-serialize"; + private String jarfilename; + private Document document; + private Vector converterInfoList; + + + /** + * Constructor. A jar file is passed in. The jar file is + * parsed and the <code>Vector</code> of <code>ConverterInfo</code> + * objects is built. + * + * @param jar The URL of the jar file to process. + * @param shouldvalidate Boolean to enable or disable xml validation. + * + * @throws IOException If the jar file cannot + * be read or if the + * META-INF/converter.xml + * can not be read in the + * jar file. + * @throws ParserConfigurationException If the DocumentBuilder + * can not be built. + * @throws org.xml.sax.SAXException If the converter.xml + * file can not be parsed. + * @throws RegistryException If the ConverterFactory + * implementation of a + * plug-in cannot be loaded. + */ + public ConverterInfoReader(String jar,boolean shouldvalidate) throws IOException, + ParserConfigurationException, org.xml.sax.SAXException, + RegistryException { + + InputStream istream; + InputSource isource; + DocumentBuilderFactory builderFactory; + DocumentBuilder builder; + JarURLConnection jarConnection; + JarEntry jarentry; + JarFile jarfile; + URL url; + + converterInfoList = new Vector(); + jarfilename = jar; + + // Get Jar via URL + // + url = new URL("jar:" + jar + "!/META-INF/converter.xml"); + jarConnection = (JarURLConnection)url.openConnection(); + jarentry = jarConnection.getJarEntry(); + jarfile = jarConnection.getJarFile(); + + // Build the InputSource + // + istream = jarfile.getInputStream(jarentry); + isource = new InputSource(istream); + + // Get the DOM builder and build the document. + // + builderFactory = DocumentBuilderFactory.newInstance(); + + //DTD validation + if (shouldvalidate){ + System.out.println("Validating xml..."); + builderFactory.setValidating(true); + } + // + builder = builderFactory.newDocumentBuilder(); + document = builder.parse(isource); + + // Parse the document. + // + parseDocument(); + } + + + /** + * Loops over the <i>converter</i> <code>Node</code> in the converter.xml + * file and processes them. + * + * @throws RegistryException If the plug-in associated with a + * specific <i>converter</i> <code>Node</code> + * cannot be loaded. + */ + private void parseDocument() throws RegistryException { + + Node converterNode; + NodeList converterNodes = document.getElementsByTagName(TAG_CONVERTER); + + for (int i=0; i < converterNodes.getLength(); i++) { + converterNode = converterNodes.item(i); + if (converterNode.getNodeType() == Node.ELEMENT_NODE) { + parseConverterNode((Element)converterNode); + } + } + } + + + /** + * Parses a <i>converter</i> node, pulling the information out of + * the <code>Node</code> and placing it in a <code>ConverterInfo</code> + * object, and adds that object to a <code>Vector</code> of + * <code>ConverterInfo</code> objects. + * + * @param e The <code>Element</code> corresponding to the + * <i>converter</i> XML tag. + * + * + * @throws RegistryException If the plug-in cannot be loaded. + */ + private void parseConverterNode(Element e) throws RegistryException { + + Element detailElement; + Node detailNode; + String elementTagName; + String officeMime = null; + Vector deviceMime = new Vector(); + String name = null; + String desc = null; + String version = null; + String vendor = null; + String classImpl = null; + String xsltSerial = null; + String xsltDeserial= null; + String temp; + + temp = e.getAttribute(ATTRIB_OFFICE_TYPE); + if (temp.length() != 0) { + officeMime = temp; + } + + temp = e.getAttribute(ATTRIB_VERSION); + if (temp.length() != 0) { + version = temp; + } + + NodeList detailNodes = e.getChildNodes(); + for (int i=0; i < detailNodes.getLength(); i++) { + + detailNode = detailNodes.item(i); + if (detailNode.getNodeType() == Node.ELEMENT_NODE) { + + detailElement = (Element)detailNode; + elementTagName = detailElement.getTagName(); + + if (TAG_NAME.equalsIgnoreCase(elementTagName)) { + name = getTextValue(detailElement); + } else if (TAG_DESC.equalsIgnoreCase(elementTagName)) { + desc = getTextValue(detailElement); + } else if (TAG_VENDOR.equalsIgnoreCase(elementTagName)) { + vendor = getTextValue(detailElement); + } else if (TAG_XSLT_SERIAL.equalsIgnoreCase(elementTagName)) { + xsltSerial = getTextValue(detailElement); + } else if (TAG_XSLT_DESERIAL.equalsIgnoreCase(elementTagName)) { + xsltDeserial = getTextValue(detailElement); + } else if (TAG_CLASS_IMPL.equalsIgnoreCase(elementTagName)) { + classImpl = getTextValue(detailElement); + } else if (TAG_TARGET.equalsIgnoreCase(elementTagName)) { + + temp = detailElement.getAttribute(ATTRIB_DEVICE_TYPE); + if (temp.length() != 0) { + deviceMime.add(temp); + } + } + } + } + ConverterInfo converterInfo; + if ((xsltSerial==null) || (xsltDeserial==null)){ + converterInfo = new ConverterInfo(jarfilename, + officeMime, deviceMime, name, + desc, version, vendor,classImpl); + } + else{ + converterInfo = new ConverterInfo(jarfilename, + officeMime, deviceMime, name, + desc, version, vendor,classImpl, + xsltSerial,xsltDeserial); + } + /*ConverterInfo converterInfo = new ConverterInfo(jarfilename, + officeMime, deviceMime, name, desc, version, vendor, + classImpl);*/ + converterInfoList.add(converterInfo); + } + + + /** + * Helper function to get the text value of an + * <code>Element</code>. + * + * @param e The <code>Element</code> to process. + * + * @return The text value of the <code>Element</code>. + */ + private String getTextValue(Element e) { + + NodeList tempNodes = e.getChildNodes(); + String text = null; + Node tempNode; + + for (int j=0; j < tempNodes.getLength(); j++) { + tempNode = tempNodes.item(j); + if (tempNode.getNodeType() == Node.TEXT_NODE) { + text = tempNode.getNodeValue().trim(); + break; + } + } + + return text; + } + + + /** + * Returns an <code>Enumeration</code> of <code>ConverterInfo</code> + * objects. + * + * @return An <code>Enumeration</code> of <code>ConverterInfo</code> + * objects. + */ + public Enumeration getConverterInfoEnumeration() { + return (converterInfoList.elements()); + } +} + |