nl.tue.gale.ae.processor.xmlmodule.CreoleTextHandler.java Source code

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Here is the source code for nl.tue.gale.ae.processor.xmlmodule.CreoleTextHandler.java

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/*
    
   This file is part of GALE (Generic Adaptation Language and Engine).
    
GALE is free software: you can redistribute it and/or modify it under the 
terms of the GNU Lesser General Public License as published by the Free 
Software Foundation, either version 3 of the License, or (at your option) 
any later version.
    
GALE 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 Lesser General Public License for 
more details.
    
You should have received a copy of the GNU Lesser General Public License
along with GALE. If not, see <http://www.gnu.org/licenses/>.
    
 */
/**
 * CreoleTextHandler.java
 * Last modified: $Date$
 * In revision:   $Revision$
 * Modified by:   $Author$
 *
 * Copyright (c) 2008-2011 Eindhoven University of Technology.
 * All Rights Reserved.
 *
 * This software is proprietary information of the Eindhoven University
 * of Technology. It may be used according to the GNU LGPL license.
 */
package nl.tue.gale.ae.processor.xmlmodule;

import java.util.LinkedList;
import java.util.List;

import nl.tue.gale.common.GaleUtil;

import org.dom4j.DocumentFactory;
import org.dom4j.Element;
import org.dom4j.Node;

import com.google.common.collect.ImmutableList;

public class CreoleTextHandler extends AbstractTextHandler {
    public CreoleTextHandler() {
        setType("creole");
    }

    @Override
    public void handleTextElement(Element textElement) {
        traverse(textElement);
    }

    @SuppressWarnings("unchecked")
    private void traverse(Element textElement) {
        boolean flat = ("true".equals(textElement.attributeValue("flat")));
        List<Element> elements = ImmutableList.copyOf((List<Element>) textElement.elements());
        for (Element element : elements) {
            textElement.content().add(textElement.content().indexOf(element),
                    DocumentFactory.getInstance().createText("(% " + GaleUtil.serializeXML(element) + " %)"));
            textElement.remove(element);
        }
        textElement.normalize();
        List<Node> content = ImmutableList.copyOf((List<Node>) textElement.content());
        for (Node node : content)
            if (node.getNodeType() == Node.TEXT_NODE) {
                textElement.content().addAll(textElement.content().indexOf(node), parse(node.getText(), flat));
                textElement.content().remove(node);
            }
    }

    @SuppressWarnings("unchecked")
    private List<Node> parse(String text, boolean flat) {
        Element result = CreoleParser.instance().parse(text);
        List<Node> content;
        if (flat) {
            content = new LinkedList<Node>();
            for (Element element : (List<Element>) result.elements())
                content.addAll(element.content());
            content = ImmutableList.copyOf(content);
        } else
            content = (List<Node>) ImmutableList.copyOf(result.content());
        for (Node node : content)
            node.detach();
        return content;
    }
}