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/*
* Copyright 2019 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.artifacts.transform;
import com.google.common.io.Files;
import org.apache.commons.io.IOUtils;
import org.gradle.api.artifacts.transform.InputArtifact;
import org.gradle.api.artifacts.transform.TransformAction;
import org.gradle.api.artifacts.transform.TransformOutputs;
import org.gradle.api.artifacts.transform.TransformParameters;
import org.gradle.api.file.FileSystemLocation;
import org.gradle.api.provider.Provider;
import org.gradle.internal.UncheckedException;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import static org.apache.commons.io.FilenameUtils.removeExtension;
/**
* Provides a generic transform from a zipped file to an extracted directory. The extracted directory
* is located in the output directory of the transform and is named after the zipped file name
* minus the extension.
*/
public interface UnzipTransform extends TransformAction {
@InputArtifact
Provider getZippedFile();
@Override
default void transform(TransformOutputs outputs) {
File zippedFile = getZippedFile().get().getAsFile();
String unzippedDirName = removeExtension(zippedFile.getName());
File unzipDir = outputs.dir(unzippedDirName);
try {
unzipTo(zippedFile, unzipDir);
} catch (IOException e) {
throw UncheckedException.throwAsUncheckedException(e);
}
}
static void unzipTo(File headersZip, File unzipDir) throws IOException {
try (ZipInputStream inputStream = new ZipInputStream(new BufferedInputStream(new FileInputStream(headersZip)))) {
ZipEntry entry;
while ((entry = inputStream.getNextEntry()) != null) {
if (entry.isDirectory()) {
continue;
}
File outFile = new File(unzipDir, entry.getName());
Files.createParentDirs(outFile);
try (FileOutputStream outputStream = new FileOutputStream(outFile)) {
IOUtils.copyLarge(inputStream, outputStream);
}
}
}
}
}