| /* |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.jackrabbit.oak.plugins.index.search.spi.binary; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| |
| import com.google.common.base.Strings; |
| import org.apache.tika.exception.TikaException; |
| import org.apache.tika.mime.MediaType; |
| import org.apache.tika.parser.ParseContext; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.xml.sax.SAXException; |
| |
| public class TikaParserConfig { |
| |
| private static final String EMPTY_PARSER = "org.apache.tika.parser.EmptyParser"; |
| |
| /** |
| * Determines the set of MediaType which have been configured with an EmptyParser. |
| * |
| * @param configStream stream for tika config |
| * @return set of MediaTypes which are not indexed |
| */ |
| public static Set<MediaType> getNonIndexedMediaTypes(InputStream configStream) throws |
| TikaException, IOException, SAXException { |
| Set<MediaType> result = new HashSet<>(); |
| Element element = getBuilder().parse(configStream).getDocumentElement(); |
| NodeList nodes = element.getElementsByTagName("parsers"); |
| if (nodes.getLength() == 1) { |
| Node parentNode = nodes.item(0); |
| NodeList parsersNodes = parentNode.getChildNodes(); |
| for (int i = 0; i < parsersNodes.getLength(); i++) { |
| Node node = parsersNodes.item(i); |
| if (node instanceof Element) { |
| String className = ((Element) node).getAttribute("class"); |
| if (EMPTY_PARSER.equals(className)) { |
| NodeList mimes = ((Element) node).getElementsByTagName("mime"); |
| parseMimeTypes(result, mimes); |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| |
| private static void parseMimeTypes(Set<MediaType> result, NodeList mimes) { |
| /* |
| <parser class="org.apache.tika.parser.EmptyParser"> |
| <mime>application/x-archive</mime> |
| <mime>application/x-bzip</mime> |
| <mime>application/x-bzip2</mime> |
| </parser> |
| */ |
| for (int j = 0; j < mimes.getLength(); j++) { |
| Node mime = mimes.item(j); |
| if (mime instanceof Element) { |
| String mimeValue = mime.getTextContent(); |
| mimeValue = Strings.emptyToNull(mimeValue); |
| if (mimeValue != null) { |
| MediaType mediaType = MediaType.parse(mimeValue.trim()); |
| if (mediaType != null) { |
| result.add(mediaType); |
| } |
| } |
| } |
| } |
| } |
| |
| private static DocumentBuilder getBuilder() throws TikaException { |
| return new ParseContext().getDocumentBuilder(); |
| } |
| } |