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Diffstat (limited to 'reportbuilder/java/org/libreoffice/report/pentaho/parser/office/DocumentContentReadHandler.java')
| -rw-r--r-- | reportbuilder/java/org/libreoffice/report/pentaho/parser/office/DocumentContentReadHandler.java | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/reportbuilder/java/org/libreoffice/report/pentaho/parser/office/DocumentContentReadHandler.java b/reportbuilder/java/org/libreoffice/report/pentaho/parser/office/DocumentContentReadHandler.java new file mode 100644 index 000000000..65a48252e --- /dev/null +++ b/reportbuilder/java/org/libreoffice/report/pentaho/parser/office/DocumentContentReadHandler.java @@ -0,0 +1,225 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +package org.libreoffice.report.pentaho.parser.office; + +import org.libreoffice.report.pentaho.OfficeNamespaces; +import org.libreoffice.report.pentaho.model.OfficeDocument; +import org.libreoffice.report.pentaho.model.OfficeStylesCollection; +import org.libreoffice.report.pentaho.parser.style.OfficeStylesReadHandler; + +import java.util.logging.Logger; + +import org.jfree.report.JFreeReport; + +import org.pentaho.reporting.libraries.resourceloader.Resource; +import org.pentaho.reporting.libraries.resourceloader.ResourceException; +import org.pentaho.reporting.libraries.resourceloader.ResourceKey; +import org.pentaho.reporting.libraries.resourceloader.ResourceKeyCreationException; +import org.pentaho.reporting.libraries.resourceloader.ResourceManager; +import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler; +import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler; + +import org.xml.sax.Attributes; +import org.xml.sax.SAXException; + +/** + * This is the root handler for the document context. The + * 'office:document-context' element is encountered, if the document is split + * into separate files. + * + * <p>Alternatively, there is the option to keep everything in one file. The root + * element for that format is 'office:document'.</p> + */ +public class DocumentContentReadHandler extends AbstractXmlReadHandler +{ + + private static final Logger LOGGER = Logger.getLogger(DocumentContentReadHandler.class.getName()); + private OfficeDocument report; + private FontFaceDeclsReadHandler fontFaceReadHandler; + private BodyReadHandler bodyReadHandler; + private OfficeStylesCollection officeStylesCollection; + + /** + * Starts parsing. + * + * @param attrs the attributes. + * @throws org.xml.sax.SAXException if there is a parsing error. + */ + @Override + protected void startParsing(final Attributes attrs) + throws SAXException + { + super.startParsing(attrs); + // parse the external 'styles.xml' if it exists + // parse the external 'meta.xml' if it exists + // parse the external 'settings.xml' if it exists + this.report = parseContentXml(); + this.report.setVirtual(true); + this.report.setType("document-content"); + this.report.setNamespace(OfficeNamespaces.OFFICE_NS); + this.report.setVirtual(true); + this.officeStylesCollection = parseStylesXml(); + } + + private OfficeStylesCollection parseStylesXml() + { + final ResourceKey contextKey = getRootHandler().getContext(); + final ResourceManager resourceManager = getRootHandler().getResourceManager(); + + try + { + final ResourceKey key = + resourceManager.deriveKey(contextKey, "styles.xml"); + final Resource resource = + resourceManager.create(key, contextKey, OfficeStylesCollection.class); + final OfficeStylesCollection styles = + (OfficeStylesCollection) resource.getResource(); + if (styles != null) + { + return styles; + } + } + catch (ResourceKeyCreationException e) + { + // ignore .. + LOGGER.config("Failed to create resource-key for 'styles.xml'. Ignoring: " + e); + } + catch (ResourceException e) + { + // ignore .. + LOGGER.config("Failed to parse resource for 'styles.xml'. Ignoring: " + e); + } + + return new OfficeStylesCollection(); + } + + private OfficeDocument parseContentXml() + { + // Check whether this is a content.xml. + if (!OfficeNamespaces.OFFICE_NS.equals(getUri()) || "document-content".equals(getTagName())) + { + return new OfficeDocument(); + } + + // we may have to parse an existing content.xml. + final ResourceKey contextKey = getRootHandler().getContext(); + final ResourceManager resourceManager = getRootHandler().getResourceManager(); + try + { + final ResourceKey key = + resourceManager.deriveKey(contextKey, "content.xml"); + final Resource resource = + resourceManager.create(key, contextKey, JFreeReport.class); + final OfficeDocument doc = (OfficeDocument) resource.getResource(); + if (doc != null) + { + return doc; + } + } + catch (ResourceKeyCreationException e) + { + // ignore .. + LOGGER.config("Failed to create resource-key for 'content.xml'. Ignoring."); + } + catch (ResourceException e) + { + // ignore .. + LOGGER.config("Failed to parse resource for 'content.xml'. Ignoring."); + } + return new OfficeDocument(); + + } + + /** + * Returns the handler for a child element. + * + * @param tagName the tag name. + * @param atts the attributes. + * @return the handler or null, if the tagname is invalid. + * + * @throws org.xml.sax.SAXException if there is a parsing error. + */ + @Override + protected XmlReadHandler getHandlerForChild(final String uri, + final String tagName, + final Attributes atts) + throws SAXException + { + if (OfficeNamespaces.OFFICE_NS.equals(uri)) + { + if ("font-face-decls".equals(tagName)) + { + if (fontFaceReadHandler == null) + { + fontFaceReadHandler = new FontFaceDeclsReadHandler(officeStylesCollection.getFontFaceDecls()); + } + return fontFaceReadHandler; + } + else if ("automatic-styles".equals(tagName)) + { + return new OfficeStylesReadHandler(officeStylesCollection.getAutomaticStyles()); + } + else if ("styles".equals(tagName)) + { + return new OfficeStylesReadHandler(officeStylesCollection.getCommonStyles()); + } + else if ("master-styles".equals(tagName)) + { + return new MasterStylesReadHandler(officeStylesCollection.getMasterStyles()); + } + else if ("body".equals(tagName)) + { + bodyReadHandler = new BodyReadHandler(); + return bodyReadHandler; + } + } + return null; + } + + /** + * Done parsing. + * + * @throws org.xml.sax.SAXException if there is a parsing error. + */ + @Override + protected void doneParsing() + throws SAXException + { + // The office-document is the only node of the report. It allows us to + // switch the layout-processing implementation later on. + + report.setStylesCollection(officeStylesCollection); + + if (bodyReadHandler != null) + { + report.addNode(bodyReadHandler.getElement()); + } + } + + /** + * Returns the object for this element or null, if this element does not + * create an object. + * + * @return the object. + */ + public Object getObject() + throws SAXException + { + return report; + } +} |