/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/
package org.olat.search.service.document.file;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.util.Iterator;
import org.apache.lucene.document.Document;
import org.apache.poi.hwpf.extractor.WordExtractor;
import org.apache.poi.poifs.filesystem.DocumentEntry;
import org.apache.poi.poifs.filesystem.Entry;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.olat.core.logging.OLog;
import org.olat.core.logging.Tracing;
import org.olat.core.util.vfs.VFSLeaf;
import org.olat.search.service.SearchResourceContext;
/**
* Lucene document mapper.
* @author Christian Guretzki
*/
public class WordDocument extends FileDocument {
private static final OLog log = Tracing.createLoggerFor(WordOOXMLDocument.class);
public final static String FILE_TYPE = "type.file.word";
public WordDocument() {
super();
}
public static Document createDocument(SearchResourceContext leafResourceContext, VFSLeaf leaf) throws IOException,DocumentException,DocumentAccessException {
WordDocument wordDocument = new WordDocument();
wordDocument.init(leafResourceContext,leaf);
wordDocument.setFileType(FILE_TYPE);
wordDocument.setCssIcon("b_filetype_doc");
if (log.isDebug()) log.debug(wordDocument.toString());
return wordDocument.getLuceneDocument();
}
protected String readContent(VFSLeaf leaf) throws IOException,DocumentException {
BufferedInputStream bis = null;
StringBuilder sb = new StringBuilder();
try {
bis = new BufferedInputStream(leaf.getInputStream());
POIFSFileSystem filesystem = new POIFSFileSystem(bis);
Iterator<?> entries = filesystem.getRoot().getEntries();
while (entries.hasNext()) {
Entry entry = (Entry) entries.next();
String name = entry.getName();
if (!(entry instanceof DocumentEntry)) {
// Skip directory entries
} else if ("WordDocument".equals(name)) {
collectWordDocument(filesystem, sb);
}
}
return sb.toString();
} catch (Exception e) {
throw new DocumentException(e.getMessage());
} finally {
if (bis != null) {
bis.close();
}
}
}
private void collectWordDocument(POIFSFileSystem filesystem, StringBuilder sb)
throws IOException {
WordExtractor extractor = new WordExtractor(filesystem);
addTextIfAny(sb, extractor.getHeaderText());
for (String paragraph : extractor.getParagraphText()) {
sb.append(paragraph).append(' ');
}
for (String paragraph : extractor.getFootnoteText()) {
sb.append(paragraph).append(' ');
}
for (String paragraph : extractor.getCommentsText()) {
sb.append(paragraph).append(' ');
}
for (String paragraph : extractor.getEndnoteText()) {
sb.append(paragraph).append(' ');
}
addTextIfAny(sb, extractor.getFooterText());
}
private void addTextIfAny(StringBuilder sb, String text) {
if (text != null && text.length() > 0) {
sb.append(text).append(' ');
}
}
}