/*
* Copyright 2012-2017 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.springframework.boot.loader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import org.junit.Rule;
import org.junit.rules.TemporaryFolder;
import org.springframework.boot.loader.archive.Archive;
import org.springframework.util.FileCopyUtils;
/**
* Base class for testing {@link ExecutableArchiveLauncher} implementations.
*
* @author Andy Wilkinson
*/
public class AbstractExecutableArchiveLauncherTests {
@Rule
public TemporaryFolder temp = new TemporaryFolder();
protected File createJarArchive(String name, String entryPrefix) throws IOException {
File archive = this.temp.newFile(name);
JarOutputStream jarOutputStream = new JarOutputStream(
new FileOutputStream(archive));
jarOutputStream.putNextEntry(new JarEntry(entryPrefix + "/"));
jarOutputStream.putNextEntry(new JarEntry(entryPrefix + "/classes/"));
jarOutputStream.putNextEntry(new JarEntry(entryPrefix + "/lib/"));
JarEntry libFoo = new JarEntry(entryPrefix + "/lib/foo.jar");
libFoo.setMethod(ZipEntry.STORED);
ByteArrayOutputStream fooJarStream = new ByteArrayOutputStream();
new JarOutputStream(fooJarStream).close();
libFoo.setSize(fooJarStream.size());
CRC32 crc32 = new CRC32();
crc32.update(fooJarStream.toByteArray());
libFoo.setCrc(crc32.getValue());
jarOutputStream.putNextEntry(libFoo);
jarOutputStream.write(fooJarStream.toByteArray());
jarOutputStream.close();
return archive;
}
protected File explode(File archive) throws IOException {
File exploded = this.temp.newFolder("exploded");
JarFile jarFile = new JarFile(archive);
Enumeration<JarEntry> entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
File entryFile = new File(exploded, entry.getName());
if (entry.isDirectory()) {
entryFile.mkdirs();
}
else {
FileCopyUtils.copy(jarFile.getInputStream(entry),
new FileOutputStream(entryFile));
}
}
jarFile.close();
return exploded;
}
protected Set<URL> getUrls(List<Archive> archives) throws MalformedURLException {
Set<URL> urls = new HashSet<>(archives.size());
for (Archive archive : archives) {
urls.add(archive.getUrl());
}
return urls;
}
}