Apktool/brut.j.util/src/main/java/brut/util/Jar.java
2014-10-23 18:14:48 -05:00

83 lines
2.6 KiB
Java

/**
* Copyright 2014 Ryszard Wiśniewski <brut.alll@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
*
* 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 brut.util;
import brut.common.BrutException;
import java.io.*;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.commons.io.IOUtils;
/**
* @author Ryszard Wiśniewski <brut.alll@gmail.com>
*/
abstract public class Jar {
private final static Set<String> mLoaded = new HashSet<String>();
private final static Map<String, File> mExtracted =
new HashMap<String, File>();
public static File getResourceAsFile(String name) throws BrutException {
File file = mExtracted.get(name);
if (file == null) {
file = extractToTmp(name);
mExtracted.put(name, file);
}
return file;
}
public static void load(String libPath) {
if (mLoaded.contains(libPath)) {
return;
}
File libFile;
try {
libFile = getResourceAsFile(libPath);
} catch (BrutException ex) {
throw new UnsatisfiedLinkError(ex.getMessage());
}
System.load(libFile.getAbsolutePath());
}
public static File extractToTmp(String resourcePath) throws BrutException {
return extractToTmp(resourcePath, "brut_util_Jar_");
}
public static File extractToTmp(String resourcePath, String tmpPrefix)
throws BrutException {
try {
InputStream in = Class.class.getResourceAsStream(resourcePath);
if (in == null) {
throw new FileNotFoundException(resourcePath);
}
File fileOut = File.createTempFile(tmpPrefix, null);
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);
}
}
}