| /* |
| * 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.tika.parser.xml; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Set; |
| |
| import org.apache.commons.codec.binary.Base64; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| import org.apache.tika.extractor.EmbeddedDocumentExtractor; |
| import org.apache.tika.extractor.EmbeddedDocumentUtil; |
| import org.apache.tika.metadata.Metadata; |
| import org.apache.tika.metadata.TikaCoreProperties; |
| import org.apache.tika.mime.MediaType; |
| import org.apache.tika.parser.ParseContext; |
| |
| public class FictionBookParser extends XMLParser { |
| private static final long serialVersionUID = 4195954546491524374L; |
| |
| private static final Set<MediaType> SUPPORTED_TYPES = |
| Collections.singleton(MediaType.application("x-fictionbook+xml")); |
| |
| @Override |
| public Set<MediaType> getSupportedTypes(ParseContext context) { |
| return SUPPORTED_TYPES; |
| } |
| |
| @Override |
| protected ContentHandler getContentHandler(ContentHandler handler, Metadata metadata, |
| ParseContext context) { |
| return new BinaryElementsDataHandler( |
| EmbeddedDocumentUtil.getEmbeddedDocumentExtractor(context), handler); |
| } |
| |
| private static class BinaryElementsDataHandler extends DefaultHandler { |
| private static final String ELEMENT_BINARY = "binary"; |
| private static final String ATTRIBUTE_ID = "id"; |
| private static final String ATTRIBUTE_CONTENT_TYPE = "content-type"; |
| private final EmbeddedDocumentExtractor partExtractor; |
| private final ContentHandler handler; |
| private final StringBuilder binaryData = new StringBuilder(); |
| private boolean binaryMode = false; |
| private Metadata metadata; |
| |
| private BinaryElementsDataHandler(EmbeddedDocumentExtractor partExtractor, |
| ContentHandler handler) { |
| this.partExtractor = partExtractor; |
| this.handler = handler; |
| } |
| |
| @Override |
| public void startElement(String uri, String localName, String qName, Attributes attributes) |
| throws SAXException { |
| binaryMode = ELEMENT_BINARY.equals(localName); |
| if (binaryMode) { |
| binaryData.setLength(0); |
| metadata = new Metadata(); |
| |
| metadata.set(TikaCoreProperties.RESOURCE_NAME_KEY, |
| attributes.getValue(ATTRIBUTE_ID)); |
| metadata.set(Metadata.CONTENT_TYPE, attributes.getValue(ATTRIBUTE_CONTENT_TYPE)); |
| } |
| } |
| |
| @Override |
| public void endElement(String uri, String localName, String qName) throws SAXException { |
| if (binaryMode) { |
| try { |
| partExtractor.parseEmbedded( |
| new ByteArrayInputStream(Base64.decodeBase64(binaryData.toString())), |
| handler, metadata, true); |
| } catch (IOException e) { |
| throw new SAXException("IOException in parseEmbedded", e); |
| } |
| |
| binaryMode = false; |
| binaryData.setLength(0); |
| } |
| } |
| |
| @Override |
| public void characters(char[] ch, int start, int length) throws SAXException { |
| if (!binaryMode) { |
| handler.characters(ch, start, length); |
| } else { |
| binaryData.append(ch, start, length); |
| } |
| } |
| |
| @Override |
| public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException { |
| handler.ignorableWhitespace(ch, start, length); |
| } |
| } |
| } |