131 lines
No EOL
4.2 KiB
Java
131 lines
No EOL
4.2 KiB
Java
/************************************************************************
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*
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* EmbeddedXMLObject.java
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*
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* Copyright: 2002-2014 by Henrik Just
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*
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* This file is part of Writer2LaTeX.
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*
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* Writer2LaTeX is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Writer2LaTeX is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Writer2LaTeX. If not, see <http://www.gnu.org/licenses/>.
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*
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* Version 1.4 (2014-08-28)
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*
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*/
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package w2phtml.office;
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import java.io.IOException;
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import org.w3c.dom.Document;
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import org.xml.sax.SAXException;
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import w2phtml.util.SimpleZipReader;
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/** This class represents those embedded objects in an ODF document that have an XML representation:
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* Formulas, charts, spreadsheets, text, drawings and presentations.
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* These object types are stored using a combination of content, settings and styles XML files.
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* The settings are application specific and ignored.
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*/
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public class EmbeddedXMLObject extends EmbeddedObject {
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// Byte entries for the XML streams of this object
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private byte[] contentBytes = null;
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private byte[] stylesBytes = null;
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private byte[] settingsBytes = null;
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// DOM trees representing the XML parts of this object
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protected Document contentDOM = null;
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protected Document stylesDOM = null;
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protected Document settingsDOM = null;
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/** Read an object from an ODF package document
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*
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* @param sName The name of the object.
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* @param sType The MIME-type of the object.
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* @param source A ZIP reader providing the contents of the package
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*/
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protected EmbeddedXMLObject(String sName, String sType, OfficeDocument doc, SimpleZipReader source) {
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super(sName, sType, doc);
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// Read the bytes, but defer parsing until required (at that point, the bytes are nullified)
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contentBytes = source.getEntry(sName+"/"+OfficeDocument.CONTENTXML);
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stylesBytes = source.getEntry(sName+"/"+OfficeDocument.STYLESXML);
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settingsBytes = source.getEntry(sName+"/"+OfficeDocument.SETTINGSXML);
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}
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/**
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* Returns the content data for this embedded object.
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*
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* @return DOM representation of "content.xml"
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*
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* @throws SAXException If any parser error occurs
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* @throws IOException If any IO error occurs
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*/
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public Document getContentDOM() throws SAXException, IOException {
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if (contentDOM==null) {
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contentDOM=getDOM(contentBytes);
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contentBytes=null;
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}
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return contentDOM;
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}
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/**
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* Returns the style data for this embedded object.
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*
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* @return DOM representation of "styles.xml"
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*
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* @throws SAXException If any parser error occurs
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* @throws IOException If any IO error occurs
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*/
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public Document getStylesDOM() throws SAXException, IOException {
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if (stylesDOM==null) {
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stylesDOM = getDOM(stylesBytes);
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stylesBytes=null;
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}
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return stylesDOM;
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}
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public Document getSettingsDOM() {
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if (settingsDOM == null) {
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try {
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settingsDOM = getDOM(settingsBytes);
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} catch (SAXException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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settingsDOM = null;
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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settingsDOM = null;
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}
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settingsBytes = null;
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}
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return settingsDOM;
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}
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private Document getDOM(byte[] data) throws SAXException, IOException {
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if (data!=null) {
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return OfficeDocument.parse(data);
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}
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return null;
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}
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public void dispose() {
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super.dispose();
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contentBytes = null;
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stylesBytes = null;
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contentDOM = null;
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stylesDOM = null;
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}
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} |