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Google App Engine compliant variation of FreeMarker. FreeMarker is a "template engine"; a generic tool to generate text output based on templates.

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/*
 * Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
 * 
 * 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 freemarker.template.utility;

import java.util.HashMap;
import java.util.List;

import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;

import freemarker.template.SimpleHash;
import freemarker.template.SimpleScalar;
import freemarker.template.TemplateBooleanModel;
import freemarker.template.TemplateHashModel;
import freemarker.template.TemplateMethodModel;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.TemplateSequenceModel;

/**
 * A convenient wrapper class for wrapping a Node in the W3C DOM API.
 */

public class DOMNodeModel implements TemplateHashModel {

    static private HashMap equivalenceTable = new HashMap();
    static {
        equivalenceTable.put("*", "children");
        equivalenceTable.put("@*", "attributes");
    }

    private Node node;
    private HashMap cache = new HashMap();

    public DOMNodeModel(Node node) {
        this.node = node;
    }

    public TemplateModel get(String key) throws TemplateModelException {
        TemplateModel result = null;
        if (equivalenceTable.containsKey(key)) {
            key = (String) equivalenceTable.get(key);
        }
        if (cache.containsKey(key)) {
            result = (TemplateModel) cache.get(key);
        }
        if (result == null) {
            if ("attributes".equals(key)) {
                NamedNodeMap attributes = node.getAttributes();
                if (attributes != null) {
                    SimpleHash hash = new SimpleHash();
                    for (int i = 0; i