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158 lines
6.1 KiB
158 lines
6.1 KiB
//swfParser.java
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//------------------------
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//part of YaCy
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//(C) by Michael Peter Christen; mc@yacy.net
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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 Marc Nause
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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 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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package net.yacy.document.parser;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Set;
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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.Idiom;
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import net.yacy.document.ParserException;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.logging.Log;
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import pt.tumba.parser.swf.SWF2HTML;
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public class swfParser extends AbstractParser implements Idiom {
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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 Set<String> SUPPORTED_MIME_TYPES = new HashSet<String>();
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public static final Set<String> SUPPORTED_EXTENSIONS = new HashSet<String>();
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static {
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SUPPORTED_EXTENSIONS.add("swf");
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SUPPORTED_MIME_TYPES.add("application/x-shockwave-flash");
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SUPPORTED_MIME_TYPES.add("application/x-shockwave-flash2-preview");
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SUPPORTED_MIME_TYPES.add("application/futuresplash");
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SUPPORTED_MIME_TYPES.add("image/vnd.rn-realflash");
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}
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public swfParser() {
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super("Adobe Flash Parser");
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}
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public Set<String> supportedMimeTypes() {
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return SUPPORTED_MIME_TYPES;
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}
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public Set<String> supportedExtensions() {
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return SUPPORTED_EXTENSIONS;
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}
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/*
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* parses the source documents and returns a plasmaParserDocument containing
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* all extracted information about the parsed document
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*/
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public Document parse(final DigestURI location, final String mimeType, final String charset, final InputStream source) throws ParserException, InterruptedException {
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try {
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final SWF2HTML swf2html = new SWF2HTML();
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String contents = "";
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try {
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contents = swf2html.convertSWFToHTML(source);
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} catch (NegativeArraySizeException e) {
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Log.logException(e);
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throw new ParserException(e.getMessage(), location);
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} catch (IOException e) {
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Log.logException(e);
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throw new ParserException(e.getMessage(), location);
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} catch (Exception e) {
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Log.logException(e);
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throw new ParserException(e.getMessage(), location);
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}
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String url = null;
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String urlnr = null;
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final String linebreak = System.getProperty("line.separator");
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final String[] sections = null;
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final String abstrct = null;
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//TreeSet images = null;
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final HashMap<DigestURI, String> anchors = new HashMap<DigestURI, String>();
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int urls = 0;
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int urlStart = -1;
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int urlEnd = 0;
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int p0 = 0;
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//getting rid of HTML-Tags
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p0 = contents.indexOf("<html><body>");
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contents = contents.substring(p0+12);
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p0 = contents.indexOf("</body></html>");
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contents = contents.substring(0,p0);
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//extracting urls
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while ((urlStart = contents.indexOf("http://",urlEnd)) >= 0){
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urlEnd = contents.indexOf(linebreak,urlStart);
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url = contents.substring(urlStart,urlEnd);
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urlnr = (Integer.valueOf(++urls)).toString();
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anchors.put(new DigestURI(url, null), urlnr);
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contents = contents.substring(0,urlStart)+contents.substring(urlEnd);
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}
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// As the result of parsing this function must return a plasmaParserDocument object
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final Document theDoc = new Document(
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location, // url of the source document
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mimeType, // the documents mime type
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"UTF-8", // charset of the document text
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null,
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null, //keywords
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((contents.length() > 80)? contents.substring(0, 80):contents.trim()).
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replaceAll("\r\n"," ").
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replaceAll("\n"," ").
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replaceAll("\r"," ").
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replaceAll("\t"," "), // title
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"", // TODO: AUTHOR
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"",
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sections, // an array of section headlines
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abstrct, // an abstract
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contents.getBytes("UTF-8"), // the parsed document text
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anchors, // a map of extracted anchors
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null,
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false); // a treeset of image URLs
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return theDoc;
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} catch (final Exception e) {
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if (e instanceof InterruptedException) throw (InterruptedException) e;
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// if an unexpected error occures just log the error and raise a new ParserException
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final String errorMsg = "Unable to parse the swf document '" + location + "':" + e.getMessage();
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this.theLogger.logSevere(errorMsg);
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throw new ParserException(errorMsg, location);
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}
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}
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@Override
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public void reset() {
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// this code is executed if the parser class is returned into the parser pool
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super.reset();
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}
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} |