1 package org.apache.commons.digester3.plugins.strategies;
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22 import static org.apache.commons.digester3.binder.DigesterLoader.newLoader;
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24 import java.io.ByteArrayInputStream;
25 import java.io.ByteArrayOutputStream;
26 import java.io.IOException;
27 import java.io.InputStream;
28
29 import org.apache.commons.digester3.Digester;
30 import org.apache.commons.digester3.plugins.PluginException;
31 import org.apache.commons.digester3.plugins.RuleLoader;
32 import org.apache.commons.digester3.xmlrules.FromXmlRulesModule;
33 import org.apache.commons.logging.Log;
34 import org.xml.sax.InputSource;
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43 public class LoaderFromStream
44 extends RuleLoader
45 {
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47 private final byte[] input;
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57 public LoaderFromStream( InputStream s )
58 throws Exception
59 {
60 try
61 {
62 ByteArrayOutputStream baos = new ByteArrayOutputStream();
63 byte[] buf = new byte[256];
64 for ( ;; )
65 {
66 int i = s.read( buf );
67 if ( i == -1 )
68 {
69 break;
70 }
71 baos.write( buf, 0, i );
72 }
73 input = baos.toByteArray();
74 }
75 finally
76 {
77 try
78 {
79 if ( s != null )
80 {
81 s.close();
82 }
83 }
84 catch ( IOException e )
85 {
86
87 }
88 }
89 }
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94 @Override
95 public void addRules( final Digester d, final String path )
96 throws PluginException
97 {
98 Log log = d.getLogger();
99 boolean debug = log.isDebugEnabled();
100 if ( debug )
101 {
102 log.debug( "LoaderFromStream: loading rules for plugin at path [" + path + "]" );
103 }
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111 final InputSource source = new InputSource( new ByteArrayInputStream( input ) );
112 newLoader( new FromXmlRulesModule()
113 {
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115 @Override
116 protected void loadRules()
117 {
118 useRootPath( path );
119 loadXMLRules( source );
120 }
121
122 } ).createRuleSet().addRuleInstances( d );
123 }
124
125 }