mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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6afb44e712
125606 rmunteanu: Merged 5.1.1 (5.1.1) to 5.1.N (5.1.2)
125515 slanglois: MNT-16155 Update source headers - add new Copyrights for Java and JSP source files + automatic check in the build
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@125788 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
116 lines
4.0 KiB
Java
116 lines
4.0 KiB
Java
/*
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* #%L
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* Alfresco Repository
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* %%
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* Copyright (C) 2005 - 2016 Alfresco Software Limited
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* %%
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* This file is part of the Alfresco software.
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* If the software was purchased under a paid Alfresco license, the terms of
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* the paid license agreement will prevail. Otherwise, the software is
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* provided under the following open source license terms:
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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* #L%
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*/
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package org.alfresco.repo.content;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.PushbackInputStream;
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import java.util.HashSet;
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import java.util.Set;
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import org.apache.poi.poifs.common.POIFSConstants;
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import org.apache.poi.util.IOUtils;
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import org.apache.tika.exception.TikaException;
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import org.apache.tika.metadata.Metadata;
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import org.apache.tika.mime.MediaType;
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import org.apache.tika.parser.ParseContext;
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import org.apache.tika.parser.Parser;
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import org.apache.tika.parser.microsoft.OfficeParser;
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import org.apache.tika.parser.microsoft.ooxml.OOXMLParser;
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import org.xml.sax.ContentHandler;
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import org.xml.sax.SAXException;
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/**
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* <a href="http://tika.apache.org/Apache Tika">Apache Tika</a> assumes that
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* you either know exactly what your content is, or that
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* you'll leave it to auto-detection.
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* Within Alfresco, we usually do know. However, from time
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* to time, we don't know if we have one of the old or one
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* of the new office files (eg .xls and .xlsx).
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* This class allows automatically selects the appropriate
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* old (OLE2) or new (OOXML) Tika parser as required.
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*
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* @author Nick Burch
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*/
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public class TikaOfficeDetectParser implements Parser {
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private Parser ole2Parser = new OfficeParser();
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private Parser ooxmlParser = new OOXMLParser();
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public Set<MediaType> getSupportedTypes(ParseContext parseContext) {
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Set<MediaType> types = new HashSet<MediaType>();
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types.addAll(ole2Parser.getSupportedTypes(parseContext));
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types.addAll(ooxmlParser.getSupportedTypes(parseContext));
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return types;
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}
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public void parse(InputStream stream,
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ContentHandler handler, Metadata metadata,
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ParseContext parseContext) throws IOException, SAXException,
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TikaException
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{
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byte[] initial4 = new byte[4];
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InputStream wrapped;
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// Preserve TikaInputStreams as TikaInputStreams as they require less memory to process
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if (stream.markSupported())
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{
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stream.mark(initial4.length);
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IOUtils.readFully(stream, initial4);
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stream.reset();
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wrapped = stream;
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}
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else
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{
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PushbackInputStream inp = new PushbackInputStream(stream, 4);
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IOUtils.readFully(inp, initial4);
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inp.unread(initial4);
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wrapped = inp;
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}
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// Which is it?
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if(initial4[0] == POIFSConstants.OOXML_FILE_HEADER[0] &&
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initial4[1] == POIFSConstants.OOXML_FILE_HEADER[1] &&
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initial4[2] == POIFSConstants.OOXML_FILE_HEADER[2] &&
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initial4[3] == POIFSConstants.OOXML_FILE_HEADER[3])
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{
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ooxmlParser.parse(wrapped, handler, metadata, parseContext);
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}
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else
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{
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ole2Parser.parse(wrapped, handler, metadata, parseContext);
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}
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}
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/**
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* @deprecated This method will be removed in Apache Tika 1.0.
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*/
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public void parse(InputStream stream,
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ContentHandler handler, Metadata metadata)
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throws IOException, SAXException, TikaException
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{
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parse(stream, handler, metadata, new ParseContext());
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}
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}
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