Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javah/compareTest/FindNativeFiles.java
test/tools/javah/compareTest/FindNativeFiles.java
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| 1 /* | |
| 2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 | |
| 24 import java.io.IOException; | |
| 25 import java.io.InputStream; | |
| 26 import java.util.Enumeration; | |
| 27 import java.util.jar.JarEntry; | |
| 28 import java.util.jar.JarFile; | |
| 29 | |
| 30 import com.sun.tools.classfile.AccessFlags; | |
| 31 import com.sun.tools.classfile.ClassFile; | |
| 32 import com.sun.tools.classfile.ConstantPoolException; | |
| 33 import com.sun.tools.classfile.Method; | |
| 34 import java.util.Comparator; | |
| 35 import java.util.Set; | |
| 36 import java.util.TreeSet; | |
| 37 | |
| 38 public class FindNativeFiles { | |
| 39 public static void main(String[] args) throws IOException, ConstantPoolException { | |
| 40 new FindNativeFiles().run(args); | |
| 41 } | |
| 42 | |
| 43 public void run(String[] args) throws IOException, ConstantPoolException { | |
| 44 JarFile jar = new JarFile(args[0]); | |
| 45 Set<JarEntry> entries = getNativeClasses(jar); | |
| 46 for (JarEntry e: entries) { | |
| 47 String name = e.getName(); | |
| 48 String className = name.substring(0, name.length() - 6).replace("/", "."); | |
| 49 System.out.println(className); | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 Set<JarEntry> getNativeClasses(JarFile jar) throws IOException, ConstantPoolException { | |
| 54 Set<JarEntry> results = new TreeSet<JarEntry>(new Comparator<JarEntry>() { | |
| 55 public int compare(JarEntry o1, JarEntry o2) { | |
| 56 return o1.getName().compareTo(o2.getName()); | |
| 57 } | |
| 58 }); | |
| 59 Enumeration<JarEntry> e = jar.entries(); | |
| 60 while (e.hasMoreElements()) { | |
| 61 JarEntry je = e.nextElement(); | |
| 62 if (isNativeClass(jar, je)) | |
| 63 results.add(je); | |
| 64 } | |
| 65 return results; | |
| 66 } | |
| 67 | |
| 68 boolean isNativeClass(JarFile jar, JarEntry entry) throws IOException, ConstantPoolException { | |
| 69 String name = entry.getName(); | |
| 70 if (name.startsWith("META-INF") || !name.endsWith(".class")) | |
| 71 return false; | |
| 72 //String className = name.substring(0, name.length() - 6).replace("/", "."); | |
| 73 //System.err.println("check " + className); | |
| 74 InputStream in = jar.getInputStream(entry); | |
| 75 ClassFile cf = ClassFile.read(in); | |
| 76 in.close(); | |
| 77 for (int i = 0; i < cf.methods.length; i++) { | |
| 78 Method m = cf.methods[i]; | |
| 79 if (m.access_flags.is(AccessFlags.ACC_NATIVE)) { | |
| 80 // System.err.println(className); | |
| 81 return true; | |
| 82 } | |
| 83 } | |
| 84 return false; | |
| 85 } | |
| 86 } |
