mirror of
https://github.com/yacy/yacy_search_server.git
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b5ac29c9a5
given css class and extends a given vocabulary with a term consisting with the text content of the html class tag. Additionally, the term is included into the semantic facet of the document. This allows the creation of faceted search to documents without the pre-creation of vocabularies; instead, the vocabulary is created on-the-fly, possibly for use in other crawls. If any of the term scraping for a specific vocabulary is successful on a document, this vocabulary is excluded for auto-annotation on the page. To use this feature, do the following: - create a vocabulary on /Vocabulary_p.html (if not existent) - in /CrawlStartExpert.html you will now see the vocabularies as column in a table. The second column provides text fields where you can name the class of html entities where the literal of the corresponding vocabulary shall be scraped out - when doing a search, you will see the content of the scraped fields in a navigation facet for the given vocabulary
137 lines
5.3 KiB
Java
137 lines
5.3 KiB
Java
/**
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* torrentParser.java
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* Copyright 2010 by Michael Peter Christen, mc@yacy.net, Frankfurt am Main, Germany
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* First released 03.01.2010 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.ByteArrayInputStream;
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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.Date;
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import java.util.List;
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import java.util.Map;
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import net.yacy.cora.document.encoding.UTF8;
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import net.yacy.cora.document.id.AnchorURL;
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import net.yacy.cora.document.id.MultiProtocolURL;
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import net.yacy.document.AbstractParser;
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import net.yacy.document.Condenser;
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import net.yacy.document.Document;
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import net.yacy.document.LibraryProvider;
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import net.yacy.document.Parser;
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import net.yacy.document.VocabularyScraper;
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import net.yacy.kelondro.data.word.Word;
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import net.yacy.kelondro.util.BDecoder;
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import net.yacy.kelondro.util.BDecoder.BObject;
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import net.yacy.kelondro.util.BDecoder.BType;
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import net.yacy.kelondro.util.FileUtils;
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// a BT parser according to http://wiki.theory.org/BitTorrentSpecification
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public class torrentParser extends AbstractParser implements Parser {
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public torrentParser() {
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super("Torrent Metadata Parser");
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this.SUPPORTED_EXTENSIONS.add("torrent");
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this.SUPPORTED_MIME_TYPES.add("application/x-bittorrent");
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}
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@Override
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public Document[] parse(AnchorURL location, String mimeType, String charset, final VocabularyScraper scraper, InputStream source)
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throws Parser.Failure, InterruptedException {
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byte[] b = null;
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try {
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b = FileUtils.read(source);
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} catch (final IOException e1) {
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throw new Parser.Failure(e1.toString(), location);
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}
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final BDecoder bd = new BDecoder(b);
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final BObject bo = bd.parse();
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if (bo == null) throw new Parser.Failure("BDecoder.parse returned null", location);
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if (bo.getType() != BType.dictionary) throw new Parser.Failure("BDecoder object is not a dictionary", location);
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final Map<String, BObject> map = bo.getMap();
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final BObject commento = map.get("comment");
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final String comment = (commento == null) ? "" : UTF8.String(commento.getString());
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//Date creation = new Date(map.get("creation date").getInteger());
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final BObject infoo = map.get("info");
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final StringBuilder filenames = new StringBuilder(80);
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String title = "";
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if (infoo != null) {
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final Map<String, BObject> info = infoo.getMap();
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final BObject fileso = info.get("files");
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if (fileso != null) {
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final List<BObject> filelist = fileso.getList();
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for (final BObject fo: filelist) {
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final BObject patho = fo.getMap().get("path");
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if (patho != null) {
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final List<BObject> l = patho.getList(); // one file may have several names
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for (final BObject fl: l) {
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filenames.append(fl.toString()).append(" ");
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}
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}
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}
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}
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final BObject nameo = info.get("name");
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if (nameo != null) title = UTF8.String(nameo.getString());
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}
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if (title == null || title.isEmpty()) title = MultiProtocolURL.unescape(location.getFileName());
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return new Document[]{new Document(
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location,
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mimeType,
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charset,
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this,
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null,
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null,
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singleList(title), // title
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comment, // author
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location.getHost(),
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null,
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null,
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0.0f, 0.0f,
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filenames.toString(),
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null,
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null,
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null,
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false,
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new Date())};
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}
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public static void main(String[] args) {
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try {
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byte[] b = FileUtils.read(new File(args[0]));
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torrentParser parser = new torrentParser();
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Document[] d = parser.parse(new AnchorURL("http://localhost/test.torrent"), null, "UTF-8", new VocabularyScraper(), new ByteArrayInputStream(b));
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Condenser c = new Condenser(d[0], null, true, true, LibraryProvider.dymLib, false, false);
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Map<String, Word> w = c.words();
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for (Map.Entry<String, Word> e: w.entrySet()) System.out.println("Word: " + e.getKey() + " - " + e.getValue().posInText);
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} catch (final IOException e) {
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e.printStackTrace();
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} catch (final Parser.Failure e) {
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e.printStackTrace();
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} catch (final InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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