/*
* 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.DataInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
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.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.LinkedHashSet;
public class CompareTest {
String[][] testCases = {
{ },
{ "-jni" },
// { "-llni" },
};
public static void main(String... args) throws Exception {
new CompareTest().run(args);
}
public void run(String... args) throws Exception {
old_javah_cmd = new File(args[0]);
rt_jar = new File(args[1]);
Set<String> testClasses;
if (args.length > 2) {
testClasses = new LinkedHashSet<String>(Arrays.asList(Arrays.copyOfRange(args, 2, args.length)));
} else
testClasses = getNativeClasses(new JarFile(rt_jar));
for (String[] options: testCases) {
for (String name: testClasses) {
test(Arrays.asList(options), rt_jar, name);
}
}
if (errors == 0)
System.out.println(count + " tests passed");
else
throw new Exception(errors + "/" + count + " tests failed");
}
public void test(List<String> options, File bootclasspath, String className)
throws IOException, InterruptedException {
System.err.println("test: " + options + " " + className);
count++;
testOptions = options;
testClassName = className;
File oldOutDir = initDir(file(new File("old"), className));
int old_rc = old_javah(options, oldOutDir, bootclasspath, className);
File newOutDir = initDir(file(new File("new"), className));
int new_rc = new_javah(options, newOutDir, bootclasspath, className);
if (old_rc != new_rc)
error("return codes differ; old: " + old_rc + ", new: " + new_rc);
compare(oldOutDir, newOutDir);
}
int old_javah(List<String> options, File outDir, File bootclasspath, String className)
throws IOException, InterruptedException {
List<String> cmd = new ArrayList<String>();
cmd.add(old_javah_cmd.getPath());
cmd.addAll(options);
cmd.add("-d");
cmd.add(outDir.getPath());
cmd.add("-bootclasspath");
cmd.add(bootclasspath.getPath());
cmd.add(className);
System.err.println("old_javah: " + cmd);
ProcessBuilder pb = new ProcessBuilder(cmd);
pb.redirectErrorStream(true);
Process p = pb.start();
BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
StringBuilder sb = new StringBuilder();
while ((line = in.readLine()) != null) {
sb.append(line);
sb.append("\n");
}
System.err.println("old javah out: " + sb.toString());
return p.waitFor();
}
int new_javah(List<String> options, File outDir, File bootclasspath, String className) {
List<String> args = new ArrayList<String>();
args.addAll(options);
args.add("-d");
args.add(outDir.getPath());
args.add("-bootclasspath");
args.add(bootclasspath.getPath());
args.add(className);
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
int rc = com.sun.tools.javah.Main.run(args.toArray(new String[args.size()]), pw);
pw.close();
System.err.println("new javah out: " + sw.toString());
return rc;
}
Set<String> getNativeClasses(JarFile jar) throws IOException, ConstantPoolException {
System.err.println("getNativeClasses: " + jar.getName());
Set<String> results = new TreeSet<String>();
Enumeration<JarEntry> e = jar.entries();
while (e.hasMoreElements()) {
JarEntry je = e.nextElement();
if (isNativeClass(jar, je)) {
String name = je.getName();
results.add(name.substring(0, name.length() - 6).replace("/", "."));
}
}
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);
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;
}
void compare(File f1, File f2) throws IOException {
if (f1.isFile() && f2.isFile())
compareFiles(f1, f2);
else if (f1.isDirectory() && f2.isDirectory())
compareDirectories(f1, f2);
else
error("files differ: "
+ f1 + " (" + getFileType(f1) + "), "
+ f2 + " (" + getFileType(f2) + ")");
}
void compareDirectories(File d1, File d2) throws IOException {
Set<String> list = new TreeSet<String>();
list.addAll(Arrays.asList(d1.list()));
list.addAll(Arrays.asList(d2.list()));
for (String c: list)
compare(new File(d1, c), new File(d2, c));
}
void compareFiles(File f1, File f2) throws IOException {
byte[] c1 = readFile(f1);
byte[] c2 = readFile(f2);
if (!Arrays.equals(c1, c2))
error("files differ: " + f1 + ", " + f2);
}
byte[] readFile(File file) throws IOException {
int size = (int) file.length();
byte[] data = new byte[size];
DataInputStream in = new DataInputStream(new FileInputStream(file));
try {
in.readFully(data);
} finally {
in.close();
}
return data;
}
String getFileType(File f) {
return f.isDirectory() ? "directory"
: f.isFile() ? "file"
: f.exists() ? "other"
: "not found";
}
/**
* Set up an empty directory.
*/
public File initDir(File dir) {
if (dir.exists())
deleteAll(dir);
dir.mkdirs();
return dir;
}
/**
* Delete a file or a directory (including all its contents).
*/
boolean deleteAll(File file) {
if (file.isDirectory()) {
for (File f: file.listFiles())
deleteAll(f);
}
return file.delete();
}
File file(File dir, String... path) {
File f = dir;
for (String p: path)
f = new File(f, p);
return f;
}
/**
* Report an error.
*/
void error(String msg, String... more) {
System.err.println("test: " + testOptions + " " + testClassName);
System.err.println("error: " + msg);
for (String s: more)
System.err.println(s);
errors++;
System.exit(1);
}
File old_javah_cmd;
File rt_jar;
List<String> testOptions;
String testClassName;
int count;
int errors;
}