/*
* Copyright 2004 Sun Microsystems, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.sun.syndication.io.impl;
import com.sun.syndication.io.WireFeedParser;
import org.jdom.Document;
import java.util.List;
/**
* Parses an XML document (JDOM Document) into a Feed.
* <p>
* It accepts all flavors of RSS (0.90, 0.91, 0.92, 0.93, 0.94, 1.0 and 2.0) and
* Atom 0.3 feeds.
* <p>
* The WireFeedParser is a liberal parser.
* <p>
* WireFeedParser instances are thread safe.
* <p>
* Parsers for a specific type must extend this class and register in the parser list.
* (Right now registration is hardcoded in the WireFeedParser constructor).
* <p>
* @author Alejandro Abdelnur
*
*/
public class FeedParsers extends PluginManager {
/**
* WireFeedParser.classes= [className] ...
*
*/
public static final String FEED_PARSERS_KEY = "WireFeedParser.classes";
/**
* Creates a parser instance.
* <p>
*
*/
public FeedParsers() {
super(FEED_PARSERS_KEY);
}
public List getSupportedFeedTypes() {
return getKeys();
}
/**
* Finds the real parser type for the given document feed.
* <p>
* @param document document feed to find the parser for.
* @return the parser for the given document or <b>null</b> if there is no parser for that document.
*
*/
public WireFeedParser getParserFor(Document document) {
List parsers = getPlugins();
WireFeedParser parser = null;
for (int i=0;parser==null && i<parsers.size();i++) {
parser = (WireFeedParser) parsers.get(i);
if (!parser.isMyType(document)) {
parser = null;
}
}
return parser;
}
protected String getKey(Object obj) {
return ((WireFeedParser)obj).getType();
}
}