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Java > Open Source Codes > org > pdfbox > util > XMLUtil


1 /**
2  * Copyright (c) 2004, www.pdfbox.org
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  * 3. Neither the name of pdfbox; nor the names of its
14  * contributors may be used to endorse or promote products derived from this
15  * software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20  * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * http://www.pdfbox.org
29  *
30  */
31 package org.pdfbox.util;
32
33 import java.io.InputStream JavaDoc;
34 import java.io.IOException JavaDoc;
35
36 import javax.xml.parsers.DocumentBuilder JavaDoc;
37 import javax.xml.parsers.DocumentBuilderFactory JavaDoc;
38
39 import org.w3c.dom.Document JavaDoc;
40 import org.w3c.dom.Element JavaDoc;
41 import org.w3c.dom.Node JavaDoc;
42 import org.w3c.dom.NodeList JavaDoc;
43 import org.w3c.dom.Text JavaDoc;
44
45 /**
46  * This class with handle some simple XML operations.
47  *
48  * @author <a HREF="mailto:ben@benlitchfield.com">Ben Litchfield</a>
49  * @version $Revision: 1.3 $
50  */
51 public class XMLUtil
52 {
53     /**
54      * Utility class, should not be instantiated.
55      *
56      */
57     private XMLUtil()
58     {
59     }
60     
61     /**
62      * This will parse an XML stream and create a DOM document.
63      *
64      * @param is The stream to get the XML from.
65      * @return The DOM document.
66      * @throws IOException It there is an error creating the dom.
67      */
68     public static Document JavaDoc parse( InputStream JavaDoc is ) throws IOException JavaDoc
69     {
70         try
71         {
72             DocumentBuilderFactory JavaDoc builderFactory = DocumentBuilderFactory.newInstance();
73             DocumentBuilder JavaDoc builder = builderFactory.newDocumentBuilder();
74             return builder.parse( is );
75         }
76         catch( Exception JavaDoc e )
77         {
78             IOException JavaDoc thrown = new IOException JavaDoc( e.getMessage() );
79             throw thrown;
80         }
81     }
82     
83     /**
84      * This will get the text value of an element.
85      *
86      * @param node The node to get the text value for.
87      * @return The text of the node.
88      */
89     public static String JavaDoc getNodeValue( Element JavaDoc node )
90     {
91         String JavaDoc retval = "";
92         NodeList JavaDoc children = node.getChildNodes();
93         for( int i=0; i<children.getLength(); i++ )
94         {
95             Node JavaDoc next = children.item( i );
96             if( next instanceof Text JavaDoc )
97             {
98                 retval = next.getNodeValue();
99             }
100         }
101         return retval;
102     }
103 }
104
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