/*
 * Copyright 2013 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.DuplicateFileCopyingException;
import org.gradle.api.file.DuplicatesStrategy;
import org.gradle.api.file.RelativePath;
import org.gradle.api.internal.file.CopyActionProcessingStreamAction;
import org.gradle.api.tasks.WorkResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.HashSet;
import java.util.Set;

public class DuplicateHandlingCopyActionDecorator implements CopyAction {

    private final static Logger LOGGER = LoggerFactory.getLogger(DuplicateHandlingCopyActionDecorator.class);
    private final CopyAction delegate;

    public DuplicateHandlingCopyActionDecorator(CopyAction delegate) {
        this.delegate = delegate;
    }

    @Override
    public WorkResult execute(final CopyActionProcessingStream stream) {
        final Set<RelativePath> visitedFiles = new HashSet<RelativePath>();

        return delegate.execute(new CopyActionProcessingStream() {
            @Override
            public void process(final CopyActionProcessingStreamAction action) {
                stream.process(new CopyActionProcessingStreamAction() {
                    @Override
                    public void processFile(FileCopyDetailsInternal details) {
                        if (!details.isDirectory()) {
                            DuplicatesStrategy strategy = details.getDuplicatesStrategy();

                            if (!visitedFiles.add(details.getRelativePath())) {
                                if (strategy == DuplicatesStrategy.EXCLUDE) {
                                    return;
                                } else if (strategy == DuplicatesStrategy.FAIL) {
                                    throw new DuplicateFileCopyingException(String.format("Encountered duplicate path \"%s\" during copy operation configured with DuplicatesStrategy.FAIL", details.getRelativePath()));
                                } else if (strategy == DuplicatesStrategy.WARN) {
                                    LOGGER.warn("Encountered duplicate path \"{}\" during copy operation configured with DuplicatesStrategy.WARN", details.getRelativePath());
                                }
                            }
                        }

                        action.processFile(details);
                    }
                });
            }
        });
    }
}

@@ -804,78 +804,8 @@
 th;%0A
-import org.gradle.api.internal.file.CopyActionProcessingStreamAction;%0A
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@@ -1430,28 +1430,16 @@
 HashSet%3C
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@@ -1472,339 +1472,46 @@
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+action -%3E stream.process(details -%3E %7B%0A
     
@@ -1564,28 +1564,16 @@
         
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 Duplicat
@@ -1640,36 +1640,24 @@
             
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 if (!visited
@@ -1712,36 +1712,24 @@
             
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@@ -1790,40 +1790,16 @@
     
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+return;%0A
     
@@ -1888,28 +1888,16 @@
         
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@@ -2086,36 +2086,24 @@
             
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@@ -2164,28 +2164,16 @@
         
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@@ -2327,33 +2327,10 @@
     
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@@ -2333,33 +2333,32 @@
                 
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@@ -2359,26 +2359,11 @@
     
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@@ -2370,25 +2370,16 @@
         
-         
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@@ -2411,65 +2411,10 @@
     
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Use Java 8 features