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1
50
51 package org.apache.avalon.meta;
52
53 import java.io.IOException  ;
54 import java.io.InputStream ;
55 import org.xml.sax.EntityResolver ;
56 import org.xml.sax.InputSource ;
57 import org.xml.sax.SAXException ;
58
59
67 class DTDResolver
68 implements EntityResolver
69 {
70
73 private final DTDInfo[] m_dtdInfos;
74
75
78 private final ClassLoader m_classLoader;
79
80
84 public DTDResolver( final DTDInfo[] dtdInfos, final ClassLoader classLoader )
85 {
86 m_dtdInfos = dtdInfos;
87 m_classLoader = classLoader;
88 }
89
90
94 public InputSource resolveEntity( final String publicId, final String systemId )
95 throws IOException , SAXException
96 {
97 for( int i = 0; i < m_dtdInfos.length; i++ )
98 {
99 final DTDInfo info = m_dtdInfos[ i ];
100
101 if( ( publicId != null && publicId.equals( info.getPublicId() ) )
102 || ( systemId != null && systemId.equals( info.getSystemId() ) ) )
103 {
104 final ClassLoader classLoader = getClassLoader();
105 final InputStream inputStream =
106 classLoader.getResourceAsStream( info.getResource() );
107 return new InputSource ( inputStream );
108 }
109 }
110
111 return null;
112 }
113
114
120 private ClassLoader getClassLoader()
121 {
122 ClassLoader classLoader = m_classLoader;
123 if( null == classLoader )
124 {
125 classLoader = Thread.currentThread().getContextClassLoader();
126 }
127 if( null == classLoader )
128 {
129 classLoader = getClass().getClassLoader();
130 }
131 return classLoader;
132 }
133 }
134 |
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