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1   /*
2    * $Id: XmlEntityEncoder.java 19250 2010-08-30 16:53:14Z dirk.olmes $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.transformer.codec;
12  
13  import org.mule.api.transformer.TransformerException;
14  import org.mule.config.i18n.CoreMessages;
15  import org.mule.transformer.AbstractTransformer;
16  import org.mule.transformer.types.DataTypeFactory;
17  import org.mule.util.XMLEntityCodec;
18  
19  import java.io.InputStream;
20  
21  import org.apache.commons.io.IOUtils;
22  
23  /**
24   * Encodes a string with XML entities
25   */
26  public class XmlEntityEncoder extends AbstractTransformer
27  {
28  
29      public XmlEntityEncoder()
30      {
31          registerSourceType(DataTypeFactory.STRING);
32          registerSourceType(DataTypeFactory.BYTE_ARRAY);
33          registerSourceType(DataTypeFactory.INPUT_STREAM);
34          setReturnDataType(DataTypeFactory.TEXT_STRING);
35      }
36  
37      @Override
38      public Object doTransform(Object src, String encoding) throws TransformerException
39      {
40          try
41          {
42              String data;
43  
44              if (src instanceof byte[])
45              {
46                  data = new String((byte[]) src, encoding);
47              }
48              else if (src instanceof InputStream)
49              {
50                  data = IOUtils.toString((InputStream)src);
51              }
52              else
53              {
54                  data = (String) src;
55              }
56  
57              return XMLEntityCodec.encodeString(data);
58          }
59          catch (Exception ex)
60          {
61              throw new TransformerException(
62                  CoreMessages.transformFailed(src.getClass().getName(), "XML"),
63                  this, ex);
64          }
65      }
66  
67  }