mcconnell 2002/12/09 04:09:40
Modified: assembly/src/java/org/apache/avalon/assembly/engine/model
ClasspathDescriptor.java
Log:
Added classpath static expansion operation.
Revision Changes Path
1.2 +62 -1
avalon-sandbox/assembly/src/java/org/apache/avalon/assembly/engine/model/ClasspathDescriptor.java
Index: ClasspathDescriptor.java
===================================================================
RCS file:
/home/cvs/avalon-sandbox/assembly/src/java/org/apache/avalon/assembly/engine/model/ClasspathDescriptor.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- ClasspathDescriptor.java 7 Dec 2002 09:34:28 -0000 1.1
+++ ClasspathDescriptor.java 9 Dec 2002 12:09:40 -0000 1.2
@@ -55,7 +55,11 @@
package org.apache.avalon.assembly.engine.model;
+import java.io.File;
import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+import java.net.URL;
/**
* <p>A classpath descriptor that describes a scoped set of jar files.
@@ -124,4 +128,61 @@
{
return m_filesets;
}
+
+ /**
+ * Expand a classpath to an array of URLS.
+ * @param home the base directory from which relative classpath entries
+ * will be resolved.
+ */
+ public static URL[] expand( File home, ClasspathDescriptor classpath )
+ {
+ if( home == null )
+ {
+ throw new NullPointerException( "home" );
+ }
+
+ if( classpath == null )
+ {
+ throw new NullPointerException( "classpath" );
+ }
+
+ List list = new ArrayList();
+ FilesetDescriptor[] dirs = classpath.getFilesetDescriptors();
+ for( int i = 0; i < dirs.length; i++ )
+ {
+ FilesetDescriptor descriptor = dirs[ i ];
+ File anchor = new File( home, descriptor.getBaseDirectory() );
+ if( !anchor.exists() )
+ {
+ final String error =
+ "Classpath base directory does not exist: "
+ + anchor;
+ throw new ClasspathRuntimeException( error );
+ }
+
+ IncludeDescriptor[] includes = descriptor.getIncludeDescriptors();
+ for( int j = 0; j < includes.length; j++ )
+ {
+ String inc = includes[ j ].getFile();
+ try
+ {
+ URL url = new File( anchor, inc ).toURL();
+ if( inc.endsWith( ".jar" ) )
+ {
+ url = new URL( "jar:" + url.toString() + "!/" );
+ }
+ list.add( url );
+ }
+ catch( Throwable e )
+ {
+ final String error =
+ "Error processing a classpath include: "
+ + inc;
+ throw new ClasspathRuntimeException( error, e );
+ }
+ }
+ }
+ return (URL[]) list.toArray( new URL[0] );
+ }
+
}
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