//swfParser.java
//------------------------
//part of YaCy
//(C) by Michael Peter Christen; mc@yacy.net
//first published on http://www.anomic.de
//Frankfurt, Germany, 2005
//
//this file is contributed by Marc Nause
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
//This program is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2 of the License, or
//(at your option) any later version.
//
//This program is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//GNU General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package net.yacy.document.parser;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import net.yacy.cora.document.MultiProtocolURI;
import net.yacy.cora.document.UTF8;
import net.yacy.document.AbstractParser;
import net.yacy.document.Document;
import net.yacy.document.Parser;
import net.yacy.kelondro.logging.Log;
import pt.tumba.parser.swf.SWF2HTML;
public class swfParser extends AbstractParser implements Parser {
public swfParser() {
super("Adobe Flash Parser");
this.SUPPORTED_EXTENSIONS.add("swf");
this.SUPPORTED_MIME_TYPES.add("application/x-shockwave-flash");
this.SUPPORTED_MIME_TYPES.add("application/x-shockwave-flash2-preview");
this.SUPPORTED_MIME_TYPES.add("application/futuresplash");
this.SUPPORTED_MIME_TYPES.add("image/vnd.rn-realflash");
}
/*
* parses the source documents and returns a plasmaParserDocument containing
* all extracted information about the parsed document
*/
public Document[] parse(final MultiProtocolURI location, final String mimeType,
final String charset, final InputStream source)
throws Parser.Failure, InterruptedException
{
try {
final SWF2HTML swf2html = new SWF2HTML();
String contents = "";
try {
contents = swf2html.convertSWFToHTML(source);
} catch (final NegativeArraySizeException e) {
throw new Parser.Failure(e.getMessage(), location);
} catch (final IOException e) {
throw new Parser.Failure(e.getMessage(), location);
} catch (final Exception e) {
Log.logException(e);
throw new Parser.Failure(e.getMessage(), location);
}
String url = null;
String urlnr = null;
final String linebreak = System.getProperty("line.separator");
final String[] sections = null;
final String abstrct = null;
//TreeSet images = null;
final Map<MultiProtocolURI, Properties> anchors = new HashMap<MultiProtocolURI, Properties>();
int urls = 0;
int urlStart = -1;
int urlEnd = 0;
int p0 = 0;
//getting rid of HTML-Tags
p0 = contents.indexOf("<html><body>",0);
contents = contents.substring(p0+12);
p0 = contents.indexOf("</body></html>",0);
contents = contents.substring(0,p0);
//extracting urls
while ((urlStart = contents.indexOf("http://",urlEnd)) >= 0){
urlEnd = contents.indexOf(linebreak,urlStart);
url = contents.substring(urlStart,urlEnd);
urlnr = Integer.toString(++urls).toString();
final Properties p = new Properties();
p.put("name", urlnr);
anchors.put(new MultiProtocolURI(url), p);
contents = contents.substring(0,urlStart)+contents.substring(urlEnd);
}
// As the result of parsing this function must return a plasmaParserDocument object
return new Document[]{new Document(
location, // url of the source document
mimeType, // the documents mime type
"UTF-8", // charset of the document text
this,
null,
null, //keywords
((contents.length() > 80)? contents.substring(0, 80):contents.trim()).
replaceAll("\r\n"," ").
replaceAll("\n"," ").
replaceAll("\r"," ").
replaceAll("\t"," "), // title
"", // TODO: AUTHOR
"",
sections, // an array of section headlines
abstrct, // an abstract
0.0f, 0.0f,
UTF8.getBytes(contents), // the parsed document text
anchors, // a map of extracted anchors
null,
null,
false)}; // a treeset of image URLs
} catch (final Exception e) {
if (e instanceof InterruptedException) throw (InterruptedException) e;
// if an unexpected error occures just log the error and raise a new Parser.Failure
final String errorMsg = "Unable to parse the swf document '" + location + "':" + e.getMessage();
this.log.logSevere(errorMsg);
throw new Parser.Failure(errorMsg, location);
}
}
}