/*
* 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.tasks.compile.incremental.jar;
import com.google.common.collect.Maps;
import com.google.common.hash.HashCode;
import org.gradle.api.UncheckedIOException;
import org.gradle.api.file.FileVisitDetails;
import org.gradle.api.file.FileVisitor;
import org.gradle.api.internal.hash.FileHasher;
import org.gradle.api.internal.tasks.compile.incremental.analyzer.ClassDependenciesAnalyzer;
import org.gradle.api.internal.tasks.compile.incremental.deps.ClassAnalysis;
import org.gradle.api.internal.tasks.compile.incremental.deps.ClassDependentsAccumulator;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
class DefaultJarSnapshotter {
private final FileHasher hasher;
private final ClassDependenciesAnalyzer analyzer;
public DefaultJarSnapshotter(FileHasher hasher, ClassDependenciesAnalyzer analyzer) {
this.hasher = hasher;
this.analyzer = analyzer;
}
public JarSnapshot createSnapshot(HashCode hash, JarArchive jarArchive) {
final Map<String, HashCode> hashes = Maps.newHashMap();
final ClassDependentsAccumulator accumulator = new ClassDependentsAccumulator();
jarArchive.contents.visit(new FileVisitor() {
public void visitDir(FileVisitDetails dirDetails) {
}
public void visitFile(FileVisitDetails fileDetails) {
if (!fileDetails.getName().endsWith(".class")) {
return;
}
HashCode classFileHash;
InputStream inputStream = fileDetails.open();
try {
classFileHash = hasher.hash(inputStream);
} finally {
try {
inputStream.close();
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
ClassAnalysis analysis = analyzer.getClassAnalysis(classFileHash, fileDetails);
accumulator.addClass(analysis);
hashes.put(analysis.getClassName(), classFileHash);
}
});
return new JarSnapshot(new JarSnapshotData(hash, hashes, accumulator.getAnalysis()));
}
}