mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-21 00:00:13 +02:00
5fc6524ca8
later - added abstract add, delete, get methods in the triplestore - added generation of triples after auto-annotation - migrated all MultiProtocolURI objects to DigestURI in the parser since the url hash is needed as subject value in the triples in the triple store
109 lines
4.7 KiB
Java
109 lines
4.7 KiB
Java
/**
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* zipParser
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* Copyright 2010 by Michael Peter Christen, mc@yacy.net, Frankfurt am Main, Germany
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* First released 29.6.2010 at http://yacy.net
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*
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* $LastChangedDate$
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* $LastChangedRevision$
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* $LastChangedBy$
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* 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 this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.document.parser;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipInputStream;
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import net.yacy.cora.document.MultiProtocolURI;
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import net.yacy.document.AbstractParser;
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import net.yacy.document.Document;
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import net.yacy.document.Parser;
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import net.yacy.document.TextParser;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.util.FileUtils;
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import net.yacy.kelondro.util.MemoryControl;
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// this is a new implementation of this parser idiom using multiple documents as result set
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public class zipParser extends AbstractParser implements Parser {
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public zipParser() {
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super("ZIP File Parser");
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this.SUPPORTED_EXTENSIONS.add("zip");
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this.SUPPORTED_EXTENSIONS.add("jar");
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this.SUPPORTED_EXTENSIONS.add("apk"); // Android package
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this.SUPPORTED_MIME_TYPES.add("application/zip");
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this.SUPPORTED_MIME_TYPES.add("application/x-zip");
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this.SUPPORTED_MIME_TYPES.add("application/x-zip-compressed");
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this.SUPPORTED_MIME_TYPES.add("application/x-compress");
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this.SUPPORTED_MIME_TYPES.add("application/x-compressed");
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this.SUPPORTED_MIME_TYPES.add("multipart/x-zip");
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this.SUPPORTED_MIME_TYPES.add("application/java-archive");
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this.SUPPORTED_MIME_TYPES.add("application/vnd.android.package-archive");
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}
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@Override
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public Document[] parse(final DigestURI url, final String mimeType,
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final String charset, final InputStream source)
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throws Parser.Failure, InterruptedException {
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// check memory for parser
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if (!MemoryControl.request(200 * 1024 * 1024, true))
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throw new Parser.Failure("Not enough Memory available for zip parser: " + MemoryControl.available(), url);
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Document[] docs = null;
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final List<Document> docacc = new ArrayList<Document>();
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ZipEntry entry;
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final ZipInputStream zis = new ZipInputStream(source);
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File tmp = null;
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// loop through the elements in the zip file and parse every single file inside
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while (true) {
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try {
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if (zis.available() <= 0) break;
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entry = zis.getNextEntry();
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if (entry == null) break;
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if (entry.isDirectory() || entry.getSize() <= 0) continue;
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final String name = entry.getName();
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final int idx = name.lastIndexOf('.');
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final String mime = TextParser.mimeOf((idx >= 0) ? name.substring(idx + 1) : "");
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try {
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tmp = FileUtils.createTempFile(this.getClass(), name);
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FileUtils.copy(zis, tmp, entry.getSize());
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final DigestURI virtualURL = new DigestURI(MultiProtocolURI.newURL(url, "#" + name));
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//this.log.logInfo("ZIP file parser: " + virtualURL.toNormalform(false, false));
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docs = TextParser.parseSource(virtualURL, mime, null, tmp);
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if (docs == null) continue;
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for (final Document d: docs) docacc.add(d);
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} catch (final Parser.Failure e) {
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this.log.logWarning("ZIP parser entry " + name + ": " + e.getMessage());
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} finally {
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if (tmp != null) FileUtils.deletedelete(tmp);
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}
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} catch (final IOException e) {
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this.log.logWarning("ZIP parser:" + e.getMessage());
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break;
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}
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}
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if (docacc.isEmpty()) return null;
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return docacc.toArray(new Document[docacc.size()]);
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}
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}
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