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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package org.apache.harmony.xml.dom;
     18 
     19 import org.w3c.dom.CDATASection;
     20 import org.w3c.dom.Node;
     21 
     22 /**
     23  * Provides a straightforward implementation of the corresponding W3C DOM
     24  * interface. The class is used internally only, thus only notable members that
     25  * are not in the original interface are documented (the W3C docs are quite
     26  * extensive). Hope that's ok.
     27  * <p>
     28  * Some of the fields may have package visibility, so other classes belonging to
     29  * the DOM implementation can easily access them while maintaining the DOM tree
     30  * structure.
     31  */
     32 public final class CDATASectionImpl extends TextImpl implements CDATASection {
     33 
     34     public CDATASectionImpl(DocumentImpl document, String data) {
     35         super(document, data);
     36     }
     37 
     38     @Override
     39     public String getNodeName() {
     40         return "#cdata-section";
     41     }
     42 
     43     @Override
     44     public short getNodeType() {
     45         return Node.CDATA_SECTION_NODE;
     46     }
     47 
     48     /**
     49      * Splits this CDATA node into parts that do not contain a "]]>" sequence.
     50      * Any newly created nodes will be inserted before this node.
     51      */
     52     public void split() {
     53         if (!needsSplitting()) {
     54             return;
     55         }
     56 
     57         Node parent = getParentNode();
     58         String[] parts = getData().split("\\]\\]>");
     59         parent.insertBefore(new CDATASectionImpl(document, parts[0] + "]]"), this);
     60         for (int p = 1; p < parts.length - 1; p++) {
     61             parent.insertBefore(new CDATASectionImpl(document, ">" + parts[p] + "]]"), this);
     62         }
     63         setData(">" + parts[parts.length - 1]);
     64     }
     65 
     66     /**
     67      * Returns true if this CDATA section contains the illegal character
     68      * sequence "]]>". Such nodes must be {@link #split} before they are
     69      * serialized.
     70      */
     71     public boolean needsSplitting() {
     72         return buffer.indexOf("]]>") != -1;
     73     }
     74 
     75     /**
     76      * Replaces this node with a semantically equivalent text node. This node
     77      * will be removed from the DOM tree and the new node inserted in its place.
     78      *
     79      * @return the replacement node.
     80      */
     81     public TextImpl replaceWithText() {
     82         TextImpl replacement = new TextImpl(document, getData());
     83         parent.insertBefore(replacement, this);
     84         parent.removeChild(this);
     85         return replacement;
     86     }
     87 }
     88