1 package org.apache.maven.plugins.shade.resource;
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22 import org.apache.maven.plugins.shade.relocation.Relocator;
23 import org.jdom.Attribute;
24 import org.jdom.Content;
25 import org.jdom.Document;
26 import org.jdom.Element;
27 import org.jdom.JDOMException;
28 import org.jdom.input.SAXBuilder;
29 import org.jdom.output.Format;
30 import org.jdom.output.XMLOutputter;
31 import org.xml.sax.EntityResolver;
32 import org.xml.sax.InputSource;
33 import org.xml.sax.SAXException;
34
35 import java.io.IOException;
36 import java.io.InputStream;
37 import java.io.StringReader;
38 import java.util.Iterator;
39 import java.util.List;
40 import java.util.jar.JarEntry;
41 import java.util.jar.JarOutputStream;
42
43
44
45
46 public class XmlAppendingTransformer
47 implements ResourceTransformer
48 {
49 public static final String XSI_NS = "http://www.w3.org/2001/XMLSchema-instance";
50
51 boolean ignoreDtd = true;
52
53 String resource;
54
55 Document doc;
56
57 public boolean canTransformResource( String r )
58 {
59 if ( resource != null && resource.equalsIgnoreCase( r ) )
60 {
61 return true;
62 }
63
64 return false;
65 }
66
67 public void processResource( String resource, InputStream is, List<Relocator> relocators )
68 throws IOException
69 {
70 Document r;
71 try
72 {
73 SAXBuilder builder = new SAXBuilder( false );
74 builder.setExpandEntities( false );
75 if ( ignoreDtd )
76 {
77 builder.setEntityResolver( new EntityResolver()
78 {
79 public InputSource resolveEntity( String publicId, String systemId )
80 throws SAXException, IOException
81 {
82 return new InputSource( new StringReader( "" ) );
83 }
84 } );
85 }
86 r = builder.build( is );
87 }
88 catch ( JDOMException e )
89 {
90 throw new RuntimeException( "Error processing resource " + resource + ": " + e.getMessage(), e );
91 }
92
93 if ( doc == null )
94 {
95 doc = r;
96 }
97 else
98 {
99 Element root = r.getRootElement();
100
101 for ( @SuppressWarnings( "unchecked" )
102 Iterator<Attribute> itr = root.getAttributes().iterator(); itr.hasNext(); )
103 {
104 Attribute a = itr.next();
105 itr.remove();
106
107 Element mergedEl = doc.getRootElement();
108 Attribute mergedAtt = mergedEl.getAttribute( a.getName(), a.getNamespace() );
109 if ( mergedAtt == null )
110 {
111 mergedEl.setAttribute( a );
112 }
113 }
114
115 for ( @SuppressWarnings( "unchecked" )
116 Iterator<Content> itr = root.getChildren().iterator(); itr.hasNext(); )
117 {
118 Content n = itr.next();
119 itr.remove();
120
121 doc.getRootElement().addContent( n );
122 }
123 }
124 }
125
126 public boolean hasTransformedResource()
127 {
128 return doc != null;
129 }
130
131 public void modifyOutputStream( JarOutputStream jos )
132 throws IOException
133 {
134 jos.putNextEntry( new JarEntry( resource ) );
135
136 new XMLOutputter( Format.getPrettyFormat() ).output( doc, jos );
137
138 doc = null;
139 }
140 }