/**
* Copyright (C) 2013 Christian Kohlschütter (ckkohl79@gmail.com)
*
* 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 de.l3s.boilerpipe.sax;
import java.util.HashMap;
/**
* Base class for definition a set of {@link de.l3s.boilerpipe.sax.TagAction}s that are to be used for the
* HTML parsing process.
*
* @see DefaultTagActionMap
* @author Christian Kohlschütter
*/
public abstract class TagActionMap extends HashMap<String, TagAction> {
private static final long serialVersionUID = 1L;
/**
* Sets a particular {@link de.l3s.boilerpipe.sax.TagAction} for a given tag. Any existing TagAction for that tag
* will be removed and overwritten.
*
* @param tag The tag (will be stored internally 1. as it is, 2. lower-case, 3. upper-case)
* @param action The {@link de.l3s.boilerpipe.sax.TagAction}
*/
protected void setTagAction(final String tag, final TagAction action) {
put(tag.toUpperCase(), action);
put(tag.toLowerCase(), action);
put(tag, action);
}
/**
* Adds a particular {@link de.l3s.boilerpipe.sax.TagAction} for a given tag. If a TagAction already exists for that tag,
* a chained action, consisting of the previous and the new {@link de.l3s.boilerpipe.sax.TagAction} is created.
*
* @param tag The tag (will be stored internally 1. as it is, 2. lower-case, 3. upper-case)
* @param action The {@link de.l3s.boilerpipe.sax.TagAction}
*/
protected void addTagAction(final String tag, final TagAction action) {
TagAction previousAction = get(tag);
if(previousAction == null) {
setTagAction(tag, action);
} else {
setTagAction(tag, new CommonTagActions.Chained(previousAction, action));
}
}
}