Apktool/brut.j.util/src/main/java/brut/util/Jar.java

65 lines
2.3 KiB
Java

/*
* Copyright (C) 2010 Ryszard Wiśniewski <brut.alll@gmail.com>
* Copyright (C) 2010 Connor Tumbleson <connor.tumbleson@gmail.com>
*
* 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
*
* https://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 brut.util;
import brut.common.BrutException;
import org.apache.commons.io.IOUtils;
import java.io.*;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ThreadLocalRandom;
public abstract class Jar {
private static final Map<String, File> mExtracted = new HashMap<>();
public static File getResourceAsFile(String name, Class<?> clazz) throws BrutException {
File file = mExtracted.get(name);
if (file == null) {
file = extractToTmp(name, clazz);
mExtracted.put(name, file);
}
return file;
}
public static File extractToTmp(String resourcePath, Class<?> clazz) throws BrutException {
return extractToTmp(resourcePath, "brut_util_Jar_", clazz);
}
public static File extractToTmp(String resourcePath, String tmpPrefix, Class<?> clazz) throws BrutException {
try {
InputStream in = clazz.getResourceAsStream(resourcePath);
if (in == null) {
throw new FileNotFoundException(resourcePath);
}
long suffix = ThreadLocalRandom.current().nextLong();
suffix = suffix == Long.MIN_VALUE ? 0 : Math.abs(suffix);
File fileOut = File.createTempFile(tmpPrefix, suffix + ".tmp");
fileOut.deleteOnExit();
OutputStream out = new FileOutputStream(fileOut);
IOUtils.copy(in, out);
in.close();
out.close();
return fileOut;
} catch (IOException ex) {
throw new BrutException("Could not extract resource: " + resourcePath, ex);
}
}
}