aoqi@0: /*
aoqi@0:  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.DataInputStream;
aoqi@0: import java.io.File;
aoqi@0: import java.io.IOException;
aoqi@0: import java.io.InputStream;
aoqi@0: import java.io.PrintWriter;
aoqi@0: import java.io.StringWriter;
aoqi@0: import java.util.ArrayList;
aoqi@0: import java.util.Arrays;
aoqi@0: import java.util.Enumeration;
aoqi@0: import java.util.List;
aoqi@0: import java.util.Set;
aoqi@0: import java.util.TreeSet;
aoqi@0: import java.util.jar.JarEntry;
aoqi@0: import java.util.jar.JarFile;
aoqi@0: 
aoqi@0: import com.sun.tools.classfile.AccessFlags;
aoqi@0: import com.sun.tools.classfile.ClassFile;
aoqi@0: import com.sun.tools.classfile.ConstantPoolException;
aoqi@0: import com.sun.tools.classfile.Method;
aoqi@0: import java.io.BufferedReader;
aoqi@0: import java.io.FileInputStream;
aoqi@0: import java.io.InputStreamReader;
aoqi@0: import java.util.LinkedHashSet;
aoqi@0: 
aoqi@0: public class CompareTest {
aoqi@0:     String[][] testCases = {
aoqi@0:         { },
aoqi@0:         { "-jni" },
aoqi@0: //        { "-llni" },
aoqi@0:     };
aoqi@0: 
aoqi@0:     public static void main(String... args) throws Exception {
aoqi@0:         new CompareTest().run(args);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void run(String... args) throws Exception {
aoqi@0:         old_javah_cmd = new File(args[0]);
aoqi@0:         rt_jar = new File(args[1]);
aoqi@0: 
aoqi@0:         Set<String> testClasses;
aoqi@0:         if (args.length > 2) {
aoqi@0:             testClasses = new LinkedHashSet<String>(Arrays.asList(Arrays.copyOfRange(args, 2, args.length)));
aoqi@0:         } else
aoqi@0:             testClasses = getNativeClasses(new JarFile(rt_jar));
aoqi@0: 
aoqi@0:         for (String[] options: testCases) {
aoqi@0:             for (String name: testClasses) {
aoqi@0:                 test(Arrays.asList(options), rt_jar, name);
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (errors == 0)
aoqi@0:             System.out.println(count + " tests passed");
aoqi@0:         else
aoqi@0:             throw new Exception(errors + "/" + count + " tests failed");
aoqi@0:     }
aoqi@0: 
aoqi@0:     public void test(List<String> options, File bootclasspath, String className)
aoqi@0:             throws IOException, InterruptedException {
aoqi@0:         System.err.println("test: " + options + " " + className);
aoqi@0:         count++;
aoqi@0: 
aoqi@0:         testOptions = options;
aoqi@0:         testClassName = className;
aoqi@0: 
aoqi@0:         File oldOutDir = initDir(file(new File("old"), className));
aoqi@0:         int old_rc = old_javah(options, oldOutDir, bootclasspath, className);
aoqi@0: 
aoqi@0:         File newOutDir = initDir(file(new File("new"), className));
aoqi@0:         int new_rc = new_javah(options, newOutDir, bootclasspath, className);
aoqi@0: 
aoqi@0:         if (old_rc != new_rc)
aoqi@0:             error("return codes differ; old: " + old_rc + ", new: " + new_rc);
aoqi@0: 
aoqi@0:         compare(oldOutDir, newOutDir);
aoqi@0:     }
aoqi@0: 
aoqi@0:     int old_javah(List<String> options, File outDir, File bootclasspath, String className)
aoqi@0:             throws IOException, InterruptedException {
aoqi@0:         List<String> cmd = new ArrayList<String>();
aoqi@0:         cmd.add(old_javah_cmd.getPath());
aoqi@0:         cmd.addAll(options);
aoqi@0:         cmd.add("-d");
aoqi@0:         cmd.add(outDir.getPath());
aoqi@0:         cmd.add("-bootclasspath");
aoqi@0:         cmd.add(bootclasspath.getPath());
aoqi@0:         cmd.add(className);
aoqi@0:         System.err.println("old_javah: " + cmd);
aoqi@0:         ProcessBuilder pb = new ProcessBuilder(cmd);
aoqi@0:         pb.redirectErrorStream(true);
aoqi@0:         Process p = pb.start();
aoqi@0:         BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
aoqi@0:         String line;
aoqi@0:         StringBuilder sb = new StringBuilder();
aoqi@0:         while ((line = in.readLine()) != null) {
aoqi@0:             sb.append(line);
aoqi@0:             sb.append("\n");
aoqi@0:         }
aoqi@0:         System.err.println("old javah out: " + sb.toString());
aoqi@0:         return p.waitFor();
aoqi@0:     }
aoqi@0: 
aoqi@0:     int new_javah(List<String> options, File outDir, File bootclasspath, String className) {
aoqi@0:         List<String> args = new ArrayList<String>();
aoqi@0:         args.addAll(options);
aoqi@0:         args.add("-d");
aoqi@0:         args.add(outDir.getPath());
aoqi@0:         args.add("-bootclasspath");
aoqi@0:         args.add(bootclasspath.getPath());
aoqi@0:         args.add(className);
aoqi@0:         StringWriter sw = new StringWriter();
aoqi@0:         PrintWriter pw = new PrintWriter(sw);
aoqi@0:         int rc = com.sun.tools.javah.Main.run(args.toArray(new String[args.size()]), pw);
aoqi@0:         pw.close();
aoqi@0:         System.err.println("new javah out: " + sw.toString());
aoqi@0:         return rc;
aoqi@0:     }
aoqi@0: 
aoqi@0:     Set<String> getNativeClasses(JarFile jar) throws IOException, ConstantPoolException {
aoqi@0:         System.err.println("getNativeClasses: " + jar.getName());
aoqi@0:         Set<String> results = new TreeSet<String>();
aoqi@0:         Enumeration<JarEntry> e = jar.entries();
aoqi@0:         while (e.hasMoreElements()) {
aoqi@0:             JarEntry je = e.nextElement();
aoqi@0:             if (isNativeClass(jar, je)) {
aoqi@0:                 String name = je.getName();
aoqi@0:                 results.add(name.substring(0, name.length() - 6).replace("/", "."));
aoqi@0:             }
aoqi@0:         }
aoqi@0:         return results;
aoqi@0:     }
aoqi@0: 
aoqi@0:     boolean isNativeClass(JarFile jar, JarEntry entry) throws IOException, ConstantPoolException {
aoqi@0:         String name = entry.getName();
aoqi@0:         if (name.startsWith("META-INF") || !name.endsWith(".class"))
aoqi@0:             return false;
aoqi@0:         //String className = name.substring(0, name.length() - 6).replace("/", ".");
aoqi@0:         //System.err.println("check " + className);
aoqi@0:         InputStream in = jar.getInputStream(entry);
aoqi@0:         ClassFile cf = ClassFile.read(in);
aoqi@0:         for (int i = 0; i < cf.methods.length; i++) {
aoqi@0:             Method m = cf.methods[i];
aoqi@0:             if (m.access_flags.is(AccessFlags.ACC_NATIVE)) {
aoqi@0:                 // System.err.println(className);
aoqi@0:                 return true;
aoqi@0:             }
aoqi@0:         }
aoqi@0:         return false;
aoqi@0:     }
aoqi@0: 
aoqi@0:     void compare(File f1, File f2) throws IOException {
aoqi@0:         if (f1.isFile() && f2.isFile())
aoqi@0:             compareFiles(f1, f2);
aoqi@0:         else if (f1.isDirectory() && f2.isDirectory())
aoqi@0:             compareDirectories(f1, f2);
aoqi@0:         else
aoqi@0:             error("files differ: "
aoqi@0:                 + f1 + " (" + getFileType(f1) + "), "
aoqi@0:                 + f2 + " (" + getFileType(f2) + ")");
aoqi@0:     }
aoqi@0: 
aoqi@0:     void compareDirectories(File d1, File d2) throws IOException {
aoqi@0:         Set<String> list = new TreeSet<String>();
aoqi@0:         list.addAll(Arrays.asList(d1.list()));
aoqi@0:         list.addAll(Arrays.asList(d2.list()));
aoqi@0:         for (String c: list)
aoqi@0:             compare(new File(d1, c), new File(d2, c));
aoqi@0:     }
aoqi@0: 
aoqi@0:     void compareFiles(File f1, File f2) throws IOException {
aoqi@0:         byte[] c1 = readFile(f1);
aoqi@0:         byte[] c2 = readFile(f2);
aoqi@0:         if (!Arrays.equals(c1, c2))
aoqi@0:             error("files differ: " + f1 + ", " + f2);
aoqi@0:     }
aoqi@0: 
aoqi@0:     byte[] readFile(File file) throws IOException {
aoqi@0:         int size = (int) file.length();
aoqi@0:         byte[] data = new byte[size];
aoqi@0:         DataInputStream in = new DataInputStream(new FileInputStream(file));
aoqi@0:         try {
aoqi@0:             in.readFully(data);
aoqi@0:         } finally {
aoqi@0:             in.close();
aoqi@0:         }
aoqi@0:         return data;
aoqi@0:     }
aoqi@0: 
aoqi@0:     String getFileType(File f) {
aoqi@0:         return f.isDirectory() ? "directory"
aoqi@0:                 : f.isFile() ? "file"
aoqi@0:                 : f.exists() ? "other"
aoqi@0:                 : "not found";
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Set up an empty directory.
aoqi@0:      */
aoqi@0:     public File initDir(File dir) {
aoqi@0:         if (dir.exists())
aoqi@0:             deleteAll(dir);
aoqi@0:         dir.mkdirs();
aoqi@0:         return dir;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Delete a file or a directory (including all its contents).
aoqi@0:      */
aoqi@0:     boolean deleteAll(File file) {
aoqi@0:         if (file.isDirectory()) {
aoqi@0:             for (File f: file.listFiles())
aoqi@0:                 deleteAll(f);
aoqi@0:         }
aoqi@0:         return file.delete();
aoqi@0:     }
aoqi@0: 
aoqi@0:     File file(File dir, String... path) {
aoqi@0:         File f = dir;
aoqi@0:         for (String p: path)
aoqi@0:             f = new File(f, p);
aoqi@0:         return f;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Report an error.
aoqi@0:      */
aoqi@0:     void error(String msg, String... more) {
aoqi@0:         System.err.println("test: " + testOptions + " " + testClassName);
aoqi@0:         System.err.println("error: " + msg);
aoqi@0:         for (String s: more)
aoqi@0:             System.err.println(s);
aoqi@0:         errors++;
aoqi@0:         System.exit(1);
aoqi@0:     }
aoqi@0: 
aoqi@0:     File old_javah_cmd;
aoqi@0:     File rt_jar;
aoqi@0:     List<String> testOptions;
aoqi@0:     String testClassName;
aoqi@0:     int count;
aoqi@0:     int errors;
aoqi@0: }