/*
* Copyright 2009 the original author or authors.
*
* 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.
*/
package org.gradle.api.internal.file.copy;
import org.gradle.api.file.FileVisitDetails;
import org.gradle.api.file.FileVisitor;
import org.gradle.api.file.RelativePath;
import org.gradle.api.internal.file.CopyActionProcessingStreamAction;
import org.gradle.api.internal.file.collections.DirectoryFileTree;
import org.gradle.api.internal.file.collections.MinimalFileTree;
import org.gradle.api.internal.tasks.SimpleWorkResult;
import org.gradle.api.tasks.WorkResult;
import org.gradle.util.GFileUtils;
import java.io.File;
import java.util.HashSet;
import java.util.Set;
public class SyncCopyActionDecorator implements CopyAction {
private final File baseDestDir;
private final CopyAction delegate;
public SyncCopyActionDecorator(File baseDestDir, CopyAction delegate) {
this.baseDestDir = baseDestDir;
this.delegate = delegate;
}
public WorkResult execute(final CopyActionProcessingStream stream) {
final Set<RelativePath> visited = new HashSet<RelativePath>();
WorkResult didWork = delegate.execute(new CopyActionProcessingStream() {
public void process(final CopyActionProcessingStreamAction action) {
stream.process(new CopyActionProcessingStreamAction() {
public void processFile(FileCopyDetailsInternal details) {
visited.add(details.getRelativePath());
action.processFile(details);
}
});
}
});
SyncCopyActionDecoratorFileVisitor fileVisitor = new SyncCopyActionDecoratorFileVisitor(visited);
MinimalFileTree walker = new DirectoryFileTree(baseDestDir).postfix();
walker.visit(fileVisitor);
visited.clear();
return new SimpleWorkResult(didWork.getDidWork() || fileVisitor.didWork);
}
private static class SyncCopyActionDecoratorFileVisitor implements FileVisitor {
private final Set<RelativePath> visited;
private boolean didWork;
private SyncCopyActionDecoratorFileVisitor(Set<RelativePath> visited) {
this.visited = visited;
}
public void visitDir(FileVisitDetails dirDetails) {
maybeDelete(dirDetails, true);
}
public void visitFile(FileVisitDetails fileDetails) {
maybeDelete(fileDetails, false);
}
private void maybeDelete(FileVisitDetails fileDetails, boolean isDir) {
RelativePath path = fileDetails.getRelativePath();
if (!visited.contains(path)) {
if (isDir) {
GFileUtils.deleteDirectory(fileDetails.getFile());
} else {
GFileUtils.deleteQuietly(fileDetails.getFile());
}
didWork = true;
}
}
}
}