You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
216 lines
8.8 KiB
216 lines
8.8 KiB
//rssParser.java
|
|
//------------------------
|
|
//part of YaCy
|
|
//(C) by Michael Peter Christen; mc@anomic.de
|
|
//first published on http://www.anomic.de
|
|
//Frankfurt, Germany, 2005
|
|
//
|
|
//this file is contributed by Martin Thelian
|
|
//last major change: 16.05.2005
|
|
//
|
|
//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
|
|
//
|
|
//Using this software in any meaning (reading, learning, copying, compiling,
|
|
//running) means that you agree that the Author(s) is (are) not responsible
|
|
//for cost, loss of data or any harm that may be caused directly or indirectly
|
|
//by usage of this softare or this documentation. The usage of this software
|
|
//is on your own risk. The installation and usage (starting/running) of this
|
|
//software may allow other people or application to access your computer and
|
|
//any attached devices and is highly dependent on the configuration of the
|
|
//software which must be done by the user of the software; the author(s) is
|
|
//(are) also not responsible for proper configuration and usage of the
|
|
//software, even if provoked by documentation provided together with
|
|
//the software.
|
|
//
|
|
//Any changes to this file according to the GPL as documented in the file
|
|
//gpl.txt aside this file in the shipment you received can be done to the
|
|
//lines that follows this copyright notice here, but changes must not be
|
|
//done inside the copyright notive above. A re-distribution must contain
|
|
//the intact and unchanged copyright notice.
|
|
//Contributions and changes to the program code must be marked as such.
|
|
|
|
package de.anomic.plasma.parser.rss;
|
|
|
|
import java.io.ByteArrayInputStream;
|
|
import java.io.InputStream;
|
|
import java.io.OutputStream;
|
|
import java.net.URL;
|
|
import java.util.Collection;
|
|
import java.util.HashMap;
|
|
import java.util.Hashtable;
|
|
import java.util.Iterator;
|
|
import java.util.LinkedList;
|
|
import java.util.Map;
|
|
|
|
import de.anomic.htmlFilter.htmlFilterAbstractScraper;
|
|
import de.anomic.htmlFilter.htmlFilterContentScraper;
|
|
import de.anomic.htmlFilter.htmlFilterOutputStream;
|
|
import de.anomic.plasma.plasmaParserDocument;
|
|
import de.anomic.plasma.parser.AbstractParser;
|
|
import de.anomic.plasma.parser.Parser;
|
|
import de.anomic.plasma.parser.ParserException;
|
|
import de.anomic.server.serverByteBuffer;
|
|
import de.anomic.server.serverFileUtils;
|
|
import de.nava.informa.core.ChannelIF;
|
|
import de.nava.informa.core.ImageIF;
|
|
import de.nava.informa.impl.basic.ChannelBuilder;
|
|
import de.nava.informa.impl.basic.Item;
|
|
import de.nava.informa.parsers.FeedParser;
|
|
|
|
public class rssParser extends AbstractParser implements Parser {
|
|
|
|
/**
|
|
* a list of mime types that are supported by this parser class
|
|
* @see #getSupportedMimeTypes()
|
|
*/
|
|
public static final Hashtable SUPPORTED_MIME_TYPES = new Hashtable();
|
|
static {
|
|
SUPPORTED_MIME_TYPES.put("text/rss","xml,rss,rdf");
|
|
SUPPORTED_MIME_TYPES.put("application/rdf+xml","xml,rss,rdf");
|
|
SUPPORTED_MIME_TYPES.put("application/rss+xml","xml,rss,rdf");
|
|
SUPPORTED_MIME_TYPES.put("application/atom+xml","xml,atom");
|
|
}
|
|
|
|
/**
|
|
* a list of library names that are needed by this parser
|
|
* @see Parser#getLibxDependences()
|
|
*/
|
|
private static final String[] LIBX_DEPENDENCIES = new String[] {
|
|
"informa-0.6.0.jar",
|
|
"commons-logging.jar",
|
|
"jdom.jar"
|
|
};
|
|
|
|
public rssParser() {
|
|
super(LIBX_DEPENDENCIES);
|
|
parserName = "Rich Site Summary/Atom Feed Parser";
|
|
}
|
|
|
|
public plasmaParserDocument parse(URL location, String mimeType,
|
|
InputStream source) throws ParserException {
|
|
|
|
try {
|
|
LinkedList feedSections = new LinkedList();
|
|
HashMap anchors = new HashMap();
|
|
HashMap images = new HashMap();
|
|
serverByteBuffer text = new serverByteBuffer();
|
|
|
|
|
|
// creating a channel-builder
|
|
ChannelBuilder builder = new ChannelBuilder();
|
|
|
|
// parsing the rss/atom feed
|
|
ChannelIF channel = FeedParser.parse(builder, source);
|
|
|
|
// getting the rss feed title and description
|
|
String feedTitle = channel.getTitle();
|
|
|
|
// getting the feed description
|
|
String feedDescription = channel.getDescription();
|
|
|
|
// getting the channel site url
|
|
//URL channelSiteURL = channel.getSite();
|
|
|
|
ImageIF channelImage = channel.getImage();
|
|
if (channelImage != null) {
|
|
images.put(channelImage.getLocation().toString(),channelImage.getTitle());
|
|
}
|
|
|
|
// loop through the feed items
|
|
Collection feedItemCollection = channel.getItems();
|
|
if (!feedItemCollection.isEmpty()) {
|
|
Iterator feedItemIterator = feedItemCollection.iterator();
|
|
while (feedItemIterator.hasNext()) {
|
|
Item item = (Item)feedItemIterator.next();
|
|
|
|
String itemTitle = item.getTitle();
|
|
URL itemURL = item.getLink();
|
|
String itemDescr = item.getDescription();
|
|
|
|
feedSections.add(itemTitle);
|
|
anchors.put(itemURL.toString(),itemTitle);
|
|
|
|
if ((text.length() != 0) && (text.byteAt(text.length() - 1) != 32)) text.append((byte) 32);
|
|
text.append(new serverByteBuffer(htmlFilterAbstractScraper.stripAll(new serverByteBuffer(itemDescr.getBytes()))).trim()).append((byte) ' ');
|
|
|
|
String itemContent = item.getElementValue("content");
|
|
if ((itemContent != null) && (itemContent.length() > 0)) {
|
|
|
|
htmlFilterContentScraper scraper = new htmlFilterContentScraper(itemURL);
|
|
OutputStream os = new htmlFilterOutputStream(null, scraper, null, false);
|
|
serverFileUtils.copy(new ByteArrayInputStream(itemContent.getBytes()), os);
|
|
|
|
String itemHeadline = scraper.getHeadline();
|
|
if ((itemHeadline != null) && (itemHeadline.length() > 0)) {
|
|
feedSections.add(itemHeadline);
|
|
}
|
|
|
|
Map itemLinks = scraper.getAnchors();
|
|
if ((itemLinks != null) && (itemLinks.size() > 0)) {
|
|
anchors.putAll(itemLinks);
|
|
}
|
|
|
|
Map itemImages = scraper.getImages();
|
|
if ((itemImages != null) && (itemImages.size() > 0)) {
|
|
images.putAll(itemImages);
|
|
}
|
|
|
|
byte[] extractedText = scraper.getText();
|
|
if ((extractedText != null) && (extractedText.length > 0)) {
|
|
if ((text.length() != 0) && (text.byteAt(text.length() - 1) != 32)) text.append((byte) 32);
|
|
text.append(scraper.getText());
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
/* (URL location, String mimeType,
|
|
String keywords, String shortTitle, String longTitle,
|
|
String[] sections, String abstrct,
|
|
byte[] text, Map anchors, Map images)
|
|
*/
|
|
plasmaParserDocument theDoc = new plasmaParserDocument(
|
|
location,
|
|
mimeType,
|
|
null,
|
|
null,
|
|
feedTitle,
|
|
(String[]) feedSections.toArray(new String[feedSections.size()]),
|
|
feedDescription,
|
|
text.getBytes(),
|
|
anchors,
|
|
images);
|
|
|
|
return theDoc;
|
|
|
|
} catch (Exception e) {
|
|
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
public Hashtable getSupportedMimeTypes() {
|
|
return SUPPORTED_MIME_TYPES;
|
|
}
|
|
|
|
public void reset() {
|
|
// TODO Auto-generated method stub
|
|
|
|
}
|
|
|
|
}
|