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