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package org.codehaus.plexus.compiler.util.scan;
/*
* Copyright 2001-2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import org.codehaus.plexus.compiler.util.scan.mapping.SourceMapping;
import java.io.File;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* @author jdcasey
* @version $Id: StaleSourceScanner.java 2408 2005-08-18 13:39:41Z trygvis $
*/
public class StaleSourceScanner
extends AbstractSourceInclusionScanner
{
private final long lastUpdatedWithinMsecs;
private final Set sourceIncludes;
private final Set sourceExcludes;
// ----------------------------------------------------------------------
//
// ----------------------------------------------------------------------
public StaleSourceScanner()
{
this( 0,
Collections.singleton( "**/*" ),
Collections.EMPTY_SET );
}
public StaleSourceScanner( long lastUpdatedWithinMsecs )
{
this( lastUpdatedWithinMsecs,
Collections.singleton( "**/*" ),
Collections.EMPTY_SET );
}
public StaleSourceScanner( long lastUpdatedWithinMsecs,
Set sourceIncludes,
Set sourceExcludes )
{
this.lastUpdatedWithinMsecs = lastUpdatedWithinMsecs;
this.sourceIncludes = sourceIncludes;
this.sourceExcludes = sourceExcludes;
}
// ----------------------------------------------------------------------
// SourceInclusionScanner Implementation
// ----------------------------------------------------------------------
public Set getIncludedSources( File sourceDir, File targetDir )
throws InclusionScanException
{
List srcMappings = getSourceMappings();
if ( srcMappings.isEmpty() )
{
return Collections.EMPTY_SET;
}
String[] potentialIncludes = scanForSources( sourceDir, sourceIncludes, sourceExcludes );
Set matchingSources = new HashSet();
for ( int i = 0; i < potentialIncludes.length; i++ )
{
String path = potentialIncludes[i];
File sourceFile = new File( sourceDir, path );
staleSourceFileTesting: for ( Iterator patternIt = srcMappings.iterator(); patternIt.hasNext(); )
{
SourceMapping mapping = (SourceMapping) patternIt.next();
Set targetFiles = mapping.getTargetFiles( targetDir, path );
// never include files that don't have corresponding target mappings.
// the targets don't have to exist on the filesystem, but the
// mappers must tell us to look for them.
for ( Iterator targetIt = targetFiles.iterator(); targetIt.hasNext(); )
{
File targetFile = (File) targetIt.next();
if ( !targetFile.exists() ||
( targetFile.lastModified() + lastUpdatedWithinMsecs < sourceFile.lastModified() ) )
{
matchingSources.add( sourceFile );
break staleSourceFileTesting;
}
}
}
}
return matchingSources;
}
}
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