/*
* Copyright 2017 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 org.gradle.api.InvalidUserDataException;
import org.gradle.api.artifacts.transform.ArtifactTransform;
import org.gradle.internal.reflect.Instantiator;
import org.gradle.internal.util.BiFunction;
import java.io.File;
import java.util.List;
class ArtifactTransformBackedTransformer implements BiFunction<List<File>, File, File> {
private final Class<? extends ArtifactTransform> implementationClass;
private final Object[] parameters;
private final Instantiator instantiator;
ArtifactTransformBackedTransformer(Class<? extends ArtifactTransform> implementationClass, Object[] parameters, Instantiator instantiator) {
this.implementationClass = implementationClass;
this.parameters = parameters;
this.instantiator = instantiator;
}
@Override
public List<File> apply(File file, File outputDir) {
ArtifactTransform artifactTransform = instantiator.newInstance(implementationClass, parameters);
artifactTransform.setOutputDirectory(outputDir);
List<File> outputs = artifactTransform.transform(file);
if (outputs == null) {
throw new InvalidUserDataException("Transform returned null result.");
}
String inputFilePrefix = file.getPath() + File.separator;
String outputDirPrefix = outputDir.getPath() + File.separator;
for (File output : outputs) {
if (!output.exists()) {
throw new InvalidUserDataException("Transform output file " + output.getPath() + " does not exist.");
}
if (output.equals(file) || output.equals(outputDir)) {
continue;
}
if (output.getPath().startsWith(outputDirPrefix)) {
continue;
}
if (output.getPath().startsWith(inputFilePrefix)) {
continue;
}
throw new InvalidUserDataException("Transform output file " + output.getPath() + " is not a child of the transform's input file or output directory.");
}
return outputs;
}
}