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      1 /*
      2  * Copyright (C) 2007 Esmertec AG.
      3  * Copyright (C) 2007 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *      http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 
     18 package com.android.mms.dom.smil.parser;
     19 
     20 import java.io.BufferedWriter;
     21 import java.io.IOException;
     22 import java.io.OutputStream;
     23 import java.io.OutputStreamWriter;
     24 import java.io.UnsupportedEncodingException;
     25 import java.io.Writer;
     26 
     27 import org.w3c.dom.Attr;
     28 import org.w3c.dom.Element;
     29 import org.w3c.dom.NamedNodeMap;
     30 import org.w3c.dom.smil.SMILDocument;
     31 import org.w3c.dom.smil.SMILElement;
     32 
     33 public class SmilXmlSerializer {
     34     public static void serialize(SMILDocument smilDoc, OutputStream out) {
     35         try {
     36             Writer writer = new BufferedWriter(new OutputStreamWriter(out, "UTF-8"), 2048);
     37 
     38             writeElement(writer, smilDoc.getDocumentElement());
     39             writer.flush();
     40         } catch (UnsupportedEncodingException e) {
     41             e.printStackTrace();
     42         } catch (IOException e) {
     43             e.printStackTrace();
     44         }
     45     }
     46 
     47     private static void writeElement(Writer writer, Element element)
     48             throws IOException {
     49         writer.write('<');
     50         writer.write(element.getTagName());
     51 
     52         if (element.hasAttributes()) {
     53             NamedNodeMap attributes = element.getAttributes();
     54             for (int i = 0; i < attributes.getLength(); i++) {
     55                 Attr attribute = (Attr)attributes.item(i);
     56                 writer.write(" " + attribute.getName());
     57                 writer.write("=\"" + attribute.getValue() + "\"");
     58             }
     59         }
     60 
     61         // FIXME: Might throw ClassCastException
     62         SMILElement childElement = (SMILElement) element.getFirstChild();
     63 
     64         if (childElement != null) {
     65             writer.write('>');
     66 
     67             do {
     68                 writeElement(writer, childElement);
     69                 childElement = (SMILElement) childElement.getNextSibling();
     70             } while (childElement != null);
     71 
     72             writer.write("</");
     73             writer.write(element.getTagName());
     74             writer.write('>');
     75         } else {
     76             writer.write("/>");
     77         }
     78     }
     79 }
     80 
     81