/*
* Copyright 2010 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.testing.detection;
import org.gradle.api.GradleException;
import java.io.File;
import java.io.IOException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import static org.gradle.internal.FileUtils.hasExtension;
public class JarFilePackageLister {
public void listJarPackages(File jarFile, JarFilePackageListener listener) {
if (jarFile == null) {
throw new IllegalArgumentException("jarFile is null!");
}
final String jarFileAbsolutePath = jarFile.getAbsolutePath();
if (!jarFile.exists()) {
throw new IllegalArgumentException("jarFile doesn't exists! (" + jarFileAbsolutePath + ")");
}
if (!jarFile.isFile()) {
throw new IllegalArgumentException("jarFile is not a file! (" + jarFileAbsolutePath + ")");
}
if (!hasExtension(jarFile, ".jar")) {
throw new IllegalArgumentException("jarFile is not a jarFile! (" + jarFileAbsolutePath + ")");
}
try {
ZipFile zipFile = new ZipFile(jarFile);
try {
final Enumeration<? extends ZipEntry> zipFileEntries = zipFile.entries();
while (zipFileEntries.hasMoreElements()) {
final ZipEntry zipFileEntry = zipFileEntries.nextElement();
if (zipFileEntry.isDirectory()) {
final String zipFileEntryName = zipFileEntry.getName();
if (!zipFileEntryName.startsWith("META-INF")) {
listener.receivePackage(zipFileEntryName);
}
}
}
} finally {
zipFile.close();
}
} catch (IOException e) {
throw new GradleException("failed to scan jar file for packages (" + jarFileAbsolutePath + ")", e);
}
}
}