| /* |
| * 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.microsoft.chm; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.SAXException; |
| |
| import org.apache.tika.exception.TikaException; |
| import org.apache.tika.extractor.EmbeddedDocumentUtil; |
| import org.apache.tika.metadata.Metadata; |
| import org.apache.tika.mime.MediaType; |
| import org.apache.tika.parser.AbstractParser; |
| import org.apache.tika.parser.ParseContext; |
| import org.apache.tika.parser.Parser; |
| import org.apache.tika.parser.html.HtmlParser; |
| import org.apache.tika.sax.BodyContentHandler; |
| import org.apache.tika.sax.EmbeddedContentHandler; |
| import org.apache.tika.sax.XHTMLContentHandler; |
| |
| public class ChmParser extends AbstractParser { |
| |
| /** |
| * Serial version UID |
| */ |
| private static final long serialVersionUID = 5938777307516469802L; |
| |
| private static final Set<MediaType> SUPPORTED_TYPES = Collections.unmodifiableSet( |
| new HashSet<>(Arrays.asList(MediaType.application("vnd.ms-htmlhelp"), |
| MediaType.application("chm"), MediaType.application("x-chm")))); |
| |
| @Override |
| public Set<MediaType> getSupportedTypes(ParseContext context) { |
| return SUPPORTED_TYPES; |
| } |
| |
| @Override |
| public void parse(InputStream stream, ContentHandler handler, Metadata metadata, |
| ParseContext context) throws IOException, SAXException, TikaException { |
| ChmExtractor chmExtractor = new ChmExtractor(stream); |
| |
| // metadata |
| metadata.set(Metadata.CONTENT_TYPE, "application/vnd.ms-htmlhelp"); |
| |
| // content |
| XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata); |
| xhtml.startDocument(); |
| |
| Parser htmlParser = |
| EmbeddedDocumentUtil.tryToFindExistingLeafParser(HtmlParser.class, context); |
| if (htmlParser == null) { |
| htmlParser = new HtmlParser(); |
| } |
| |
| for (DirectoryListingEntry entry : chmExtractor.getChmDirList() |
| .getDirectoryListingEntryList()) { |
| final String entryName = entry.getName(); |
| if (entryName.endsWith(".html") || entryName.endsWith(".htm")) { |
| // AttributesImpl attrs = new AttributesImpl(); |
| // attrs.addAttribute("", "name", "name", "String", entryName); |
| // xhtml.startElement("", "document", "document", attrs); |
| |
| byte[] data = chmExtractor.extractChmEntry(entry); |
| |
| parsePage(data, htmlParser, xhtml, context); |
| |
| // xhtml.endElement("", "", "document"); |
| } |
| } |
| |
| xhtml.endDocument(); |
| } |
| |
| |
| private void parsePage(byte[] byteObject, Parser htmlParser, ContentHandler xhtml, |
| ParseContext context) throws TikaException, SAXException { // throws IOException |
| InputStream stream = null; |
| Metadata metadata = new Metadata(); |
| ContentHandler handler = new EmbeddedContentHandler(new BodyContentHandler(xhtml));// -1 |
| try { |
| stream = new ByteArrayInputStream(byteObject); |
| htmlParser.parse(stream, handler, metadata, context); |
| } catch (IOException e) { |
| // Pushback overflow from tagsoup |
| } |
| } |
| |
| } |