git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2399 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
theli
19 years ago
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//gzipParser.java
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//------------------------
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//part of YaCy
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//(C) by Michael Peter Christen; mc@anomic.de
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//first published on http://www.anomic.de
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//Frankfurt, Germany, 2005
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//
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//this file is contributed by Martin Thelian
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//last major change: 24.04.2005
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//
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//This program is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//
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//This program 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 General Public License for more details.
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//
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//You should have received a copy of the GNU General Public License
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//along with this program; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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//Using this software in any meaning (reading, learning, copying, compiling,
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//running) means that you agree that the Author(s) is (are) not responsible
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//for cost, loss of data or any harm that may be caused directly or indirectly
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//by usage of this softare or this documentation. The usage of this software
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//is on your own risk. The installation and usage (starting/running) of this
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//software may allow other people or application to access your computer and
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//any attached devices and is highly dependent on the configuration of the
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//software which must be done by the user of the software; the author(s) is
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//(are) also not responsible for proper configuration and usage of the
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//software, even if provoked by documentation provided together with
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//the software.
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//
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//Any changes to this file according to the GPL as documented in the file
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//gpl.txt aside this file in the shipment you received can be done to the
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//lines that follows this copyright notice here, but changes must not be
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//done inside the copyright notive above. A re-distribution must contain
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//the intact and unchanged copyright notice.
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//Contributions and changes to the program code must be marked as such.
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package de.anomic.plasma.parser.sevenZip;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.net.URL;
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import java.util.Hashtable;
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import LZMA.LzmaInputStream;
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import de.anomic.plasma.plasmaParser;
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import de.anomic.plasma.plasmaParserDocument;
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import de.anomic.plasma.parser.AbstractParser;
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import de.anomic.plasma.parser.Parser;
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import de.anomic.plasma.parser.ParserException;
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public class sevenZipParser extends AbstractParser implements Parser {
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/**
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* a list of mime types that are supported by this parser class
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* @see #getSupportedMimeTypes()
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*/
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public static final Hashtable SUPPORTED_MIME_TYPES = new Hashtable();
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static {
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SUPPORTED_MIME_TYPES.put("application/x-7z-compressed","7z,t7z");
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}
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/**
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* a list of library names that are needed by this parser
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* @see Parser#getLibxDependences()
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*/
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private static final String[] LIBX_DEPENDENCIES = new String[] {"JLzma.jar"};
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public sevenZipParser() {
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super(LIBX_DEPENDENCIES);
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parserName = "7-Zip Compressed Archive Parser";
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}
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public Hashtable getSupportedMimeTypes() {
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return SUPPORTED_MIME_TYPES;
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}
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public plasmaParserDocument parse(URL location, String mimeType, InputStream source) throws ParserException {
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File tempFile = null;
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try {
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int read = 0;
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byte[] data = new byte[1024];
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LzmaInputStream zippedContent = new LzmaInputStream(source);
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tempFile = File.createTempFile("sevenzip","tmp");
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tempFile.deleteOnExit();
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// creating a temp file to store the uncompressed data
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FileOutputStream out = new FileOutputStream(tempFile);
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// reading gzip file and store it uncompressed
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while((read = zippedContent.read(data, 0, 1024)) != -1) {
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out.write(data, 0, read);
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}
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zippedContent.close();
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out.close();
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// creating a new parser class to parse the unzipped content
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plasmaParser theParser = new plasmaParser();
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return theParser.parseSource(location,null,tempFile);
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} catch (Exception e) {
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throw new ParserException("Unable to parse the 7Zip content. " + e.getMessage());
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} catch (Error e) {
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e.printStackTrace();
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throw new ParserException("Unable to parse the 7Zip content. " + e.getMessage());
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} finally {
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if (tempFile != null) tempFile.delete();
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}
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}
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public void reset() {
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// Nothing todo here at the moment
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}
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}
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