//odtParser.java //------------------------ //part of YaCy //(C) by Michael Peter Christen; mc@yacy.net //first published on http://www.anomic.de //Frankfurt, Germany, 2005 // //this file is contributed by Martin Thelian // // $LastChangedDate$ // $LastChangedRevision$ // $LastChangedBy$ // //This program is free software; you can redistribute it and/or modify //it under the terms of the GNU General Public License as published by //the Free Software Foundation; either version 2 of the License, or //(at your option) any later version. // //This program 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 General Public License for more details. // //You should have received a copy of the GNU General Public License //along with this program; if not, write to the Free Software //Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA package net.yacy.document.parser; import java.io.File; import java.io.InputStream; import java.util.ArrayList; import java.util.Date; import java.util.Enumeration; import java.util.HashSet; import java.util.List; import java.util.Set; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; import javax.xml.parsers.ParserConfigurationException; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import net.yacy.cora.document.encoding.UTF8; import net.yacy.cora.document.id.AnchorURL; import net.yacy.cora.util.ConcurrentLog; import net.yacy.document.AbstractParser; import net.yacy.document.Document; import net.yacy.document.Parser; import net.yacy.document.parser.xml.ODContentHandler; import net.yacy.document.parser.xml.ODMetaHandler; import net.yacy.kelondro.io.CharBuffer; import net.yacy.kelondro.util.FileUtils; import org.xml.sax.SAXException; public class ooxmlParser extends AbstractParser implements Parser { public ooxmlParser() { super("Open Office XML Document Parser"); this.SUPPORTED_EXTENSIONS.add("docx"); this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.wordprocessingml.document"); this.SUPPORTED_EXTENSIONS.add("dotx"); this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.wordprocessingml.template"); this.SUPPORTED_EXTENSIONS.add("potx"); this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.presentationml.template"); this.SUPPORTED_EXTENSIONS.add("ppsx"); this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.presentationml.slideshow"); this.SUPPORTED_EXTENSIONS.add("pptx"); this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.presentationml.presentation"); this.SUPPORTED_EXTENSIONS.add("xlsx"); this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); this.SUPPORTED_EXTENSIONS.add("xltx"); this.SUPPORTED_MIME_TYPES.add("application/vnd.openxmlformats-officedocument.spreadsheetml.template"); } private static final ThreadLocal tlSax = new ThreadLocal(); private static SAXParser getParser() throws SAXException { SAXParser parser = tlSax.get(); if (parser == null) { try { parser = SAXParserFactory.newInstance().newSAXParser(); } catch (final ParserConfigurationException e) { throw new SAXException(e.getMessage(), e); } tlSax.set(parser); } return parser; } private Document[] parse(final AnchorURL location, final String mimeType, @SuppressWarnings("unused") final String charset, final File dest) throws Parser.Failure, InterruptedException { CharBuffer writer = null; try { String docDescription = null; String docKeywordStr = null; String docShortTitle = null; String docLongTitle = null; String docAuthor = null; String docLanguage = null; // opening the file as zip file final ZipFile zipFile= new ZipFile(dest); final Enumeration zipEnum = zipFile.entries(); // looping through all containing files while (zipEnum.hasMoreElements()) { // get next zip file entry final ZipEntry zipEntry= zipEnum.nextElement(); final String entryName = zipEntry.getName(); // content.xml contains the document content in xml format if (entryName.equals("word/document.xml") || entryName.startsWith("ppt/slides/slide") || entryName.startsWith("xl/worksheets/sheet")) { // create a writer for output writer = new CharBuffer(odtParser.MAX_DOCSIZE, (int) zipEntry.getSize()); // extract data final InputStream zipFileEntryStream = zipFile.getInputStream(zipEntry); try { final SAXParser saxParser = getParser(); saxParser.parse(zipFileEntryStream, new ODContentHandler(writer)); // close readers and writers } finally { zipFileEntryStream.close(); } } else if (entryName.equals("docProps/core.xml")) { // meta.xml contains metadata about the document final InputStream zipFileEntryStream = zipFile.getInputStream(zipEntry); final SAXParser saxParser = getParser(); final ODMetaHandler metaData = new ODMetaHandler(); saxParser.parse(zipFileEntryStream, metaData); docDescription = metaData.getDescription(); docKeywordStr = metaData.getKeyword(); docShortTitle = metaData.getTitle(); docLongTitle = metaData.getSubject(); docAuthor = metaData.getCreator(); docLanguage = metaData.getLanguage(); } } // make the languages set final Set languages = new HashSet(1); if (docLanguage != null && docLanguage.isEmpty()) languages.add(docLanguage); // if there is no title availabe we generate one if ((docLongTitle == null || docLongTitle.isEmpty()) && (docShortTitle != null)) { docLongTitle = docShortTitle; } // split the keywords String[] docKeywords = null; if (docKeywordStr != null) docKeywords = docKeywordStr.split(" |,"); // create the parser document Document[] docs = null; final byte[] contentBytes = (writer == null) ? null : UTF8.getBytes(writer.toString()); List descriptions = new ArrayList(); if (docDescription != null && docDescription.length() > 0) descriptions.add(docDescription); docs = new Document[]{new Document( location, mimeType, "UTF-8", this, languages, docKeywords, singleList(docLongTitle), docAuthor, "", null, descriptions, 0.0f, 0.0f, contentBytes, null, null, null, false, new Date())}; return docs; } catch (final Exception e) { if (e instanceof InterruptedException) throw (InterruptedException) e; if (e instanceof Parser.Failure) throw (Parser.Failure) e; // close the writer if (writer != null) try { writer.close(); } catch (final Exception ex) {/* ignore this */} ConcurrentLog.logException(e); throw new Parser.Failure("Unexpected error while parsing odt file. " + e.getMessage(),location); } } @Override public Document[] parse(final AnchorURL location, final String mimeType, final String charset, final InputStream source) throws Parser.Failure, InterruptedException { File dest = null; try { // creating a tempfile dest = File.createTempFile("OpenDocument", ".odt"); dest.deleteOnExit(); // copying the stream into a file FileUtils.copy(source, dest); // parsing the content return parse(location, mimeType, charset, dest); } catch (final Exception e) { if (e instanceof InterruptedException) throw (InterruptedException) e; if (e instanceof Parser.Failure) throw (Parser.Failure) e; throw new Parser.Failure("Unexpected error while parsing odt file. " + e.getMessage(),location); } finally { if (dest != null) FileUtils.deletedelete(dest); } } }