87 lines
3.3 KiB
Java
87 lines
3.3 KiB
Java
/*
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* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Enumeration;
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import java.util.jar.JarEntry;
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import java.util.jar.JarFile;
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import com.sun.tools.classfile.AccessFlags;
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import com.sun.tools.classfile.ClassFile;
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import com.sun.tools.classfile.ConstantPoolException;
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import com.sun.tools.classfile.Method;
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import java.util.Comparator;
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import java.util.Set;
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import java.util.TreeSet;
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public class FindNativeFiles {
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public static void main(String[] args) throws IOException, ConstantPoolException {
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new FindNativeFiles().run(args);
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}
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public void run(String[] args) throws IOException, ConstantPoolException {
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JarFile jar = new JarFile(args[0]);
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Set<JarEntry> entries = getNativeClasses(jar);
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for (JarEntry e: entries) {
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String name = e.getName();
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String className = name.substring(0, name.length() - 6).replace("/", ".");
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System.out.println(className);
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}
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}
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Set<JarEntry> getNativeClasses(JarFile jar) throws IOException, ConstantPoolException {
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Set<JarEntry> results = new TreeSet<JarEntry>(new Comparator<JarEntry>() {
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public int compare(JarEntry o1, JarEntry o2) {
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return o1.getName().compareTo(o2.getName());
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}
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});
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Enumeration<JarEntry> e = jar.entries();
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while (e.hasMoreElements()) {
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JarEntry je = e.nextElement();
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if (isNativeClass(jar, je))
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results.add(je);
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}
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return results;
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}
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boolean isNativeClass(JarFile jar, JarEntry entry) throws IOException, ConstantPoolException {
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String name = entry.getName();
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if (name.startsWith("META-INF") || !name.endsWith(".class"))
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return false;
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//String className = name.substring(0, name.length() - 6).replace("/", ".");
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//System.err.println("check " + className);
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InputStream in = jar.getInputStream(entry);
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ClassFile cf = ClassFile.read(in);
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in.close();
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for (int i = 0; i < cf.methods.length; i++) {
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Method m = cf.methods[i];
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if (m.access_flags.is(AccessFlags.ACC_NATIVE)) {
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// System.err.println(className);
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return true;
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}
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}
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return false;
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}
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}
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