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1
4 package com.openedit.store;
5
6 import java.io.File  ;
7 import java.io.FileInputStream ;
8 import java.io.FileOutputStream ;
9 import java.io.IOException ;
10
11 import org.dom4j.Document;
12 import org.dom4j.DocumentException;
13 import org.dom4j.DocumentHelper;
14 import org.dom4j.Element;
15 import org.dom4j.io.OutputFormat;
16 import org.dom4j.io.SAXReader;
17 import org.dom4j.io.XMLWriter;
18
19 import com.openedit.util.FileUtils;
20
21
25 public class Dom4JHelper
26 {
27
28 public void writeXmlFile( Element inRoot, File inFile ) throws IOException
29 {
30 File tempFile = new File ( inFile.getParentFile(), inFile.getName() + ".temp" );
32
33 inFile.getParentFile().mkdirs();
34 FileOutputStream fos = null;
35 try
36 {
37 fos = new FileOutputStream ( tempFile );
38 XMLWriter writer = new XMLWriter( fos, OutputFormat.createPrettyPrint() );
39 writer.write( inRoot );
40 }
41 finally
42 {
43 FileUtils.safeClose( fos );
44 }
45
46 inFile.delete();
47 if ( !tempFile.renameTo(inFile) )
48 {
49 throw new IOException ( "Unable to rename " + tempFile + " to " + inFile );
50 }
51 }
52
53 public Element getRootElement( File inFile, String inElementName ) throws IOException , DocumentException
54 {
55 if ( inFile.exists() )
56 {
57 SAXReader reader = new SAXReader();
58 Document document;
59 FileInputStream stream = null;
60 try
61 {
62 stream = new FileInputStream (inFile);
63 document = reader.read(stream);
64 return document.getRootElement();
65 }
66 finally
67 {
68 if ( stream != null )
69 {
70 stream.close();
71 }
72 }
73 }
74 else
75 {
76 return DocumentHelper.createElement( inElementName );
77 }
78 }
79
80 }
81 |
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