mirror of
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83 lines
2.6 KiB
Java
83 lines
2.6 KiB
Java
/**
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* Copyright 2014 Ryszard Wiśniewski <brut.alll@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package brut.util;
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import brut.common.BrutException;
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import java.io.*;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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import org.apache.commons.io.IOUtils;
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/**
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* @author Ryszard Wiśniewski <brut.alll@gmail.com>
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*/
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abstract public class Jar {
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private final static Set<String> mLoaded = new HashSet<String>();
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private final static Map<String, File> mExtracted =
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new HashMap<String, File>();
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public static File getResourceAsFile(String name) throws BrutException {
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File file = mExtracted.get(name);
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if (file == null) {
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file = extractToTmp(name);
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mExtracted.put(name, file);
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}
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return file;
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}
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public static void load(String libPath) {
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if (mLoaded.contains(libPath)) {
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return;
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}
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File libFile;
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try {
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libFile = getResourceAsFile(libPath);
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} catch (BrutException ex) {
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throw new UnsatisfiedLinkError(ex.getMessage());
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}
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System.load(libFile.getAbsolutePath());
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}
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public static File extractToTmp(String resourcePath) throws BrutException {
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return extractToTmp(resourcePath, "brut_util_Jar_");
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}
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public static File extractToTmp(String resourcePath, String tmpPrefix)
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throws BrutException {
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try {
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InputStream in = Class.class.getResourceAsStream(resourcePath);
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if (in == null) {
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throw new FileNotFoundException(resourcePath);
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}
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File fileOut = File.createTempFile(tmpPrefix, null);
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fileOut.deleteOnExit();
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OutputStream out = new FileOutputStream(fileOut);
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IOUtils.copy(in, out);
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in.close();
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out.close();
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return fileOut;
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} catch (IOException ex) {
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throw new BrutException(
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"Could not extract resource: " + resourcePath, ex);
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}
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}
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}
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