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/*
* Copyright (c) 2007, 2016, 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.
*/
/*
* @test
* @bug 7150368 8003412 8000407 8031545
* @summary javac should include basic ability to generate native headers
* @modules jdk.compiler/com.sun.tools.javah
*/
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class CompareTest {
public static void main(String... args) throws Exception {
new CompareTest().run();
}
void run() throws Exception {
File srcDir = new File(System.getProperty("test.src"));
File classesDir = new File("classes");
classesDir.mkdirs();
File javacHeaders = new File("headers.javac");
javacHeaders.mkdirs();
File javahHeaders = new File("headers.javah");
javahHeaders.mkdirs();
List<String> javacArgs = new ArrayList<String>();
javacArgs.add("-d");
javacArgs.add(classesDir.getPath());
javacArgs.add("-h");
javacArgs.add(javacHeaders.getPath());
javacArgs.add("-XDjavah:full");
for (File f: srcDir.listFiles()) {
if (f.getName().matches("TestClass[0-9]+\\.java")) {
sourceFileCount++;
javacArgs.add(f.getPath());
}
}
int rc = com.sun.tools.javac.Main.compile(javacArgs.toArray(new String[javacArgs.size()]));
if (rc != 0)
throw new Exception("javac failed; rc=" + rc);
List<String> javahArgs = new ArrayList<String>();
javahArgs.add("-d");
javahArgs.add(javahHeaders.getPath());
for (File f: classesDir.listFiles()) {
if (f.getName().endsWith(".class")) {
javahArgs.add(inferBinaryName(f));
}
}
PrintWriter pw = new PrintWriter(System.out, true);
rc = com.sun.tools.javah.Main.run(javahArgs.toArray(new String[javahArgs.size()]), pw);
if (rc != 0)
throw new Exception("javah failed; rc=" + rc);
compare(javahHeaders, javacHeaders);
int javahHeaderCount = javahHeaders.list().length;
int javacHeaderCount = javacHeaders.list().length;
System.out.println(sourceFileCount + " .java files found");
System.out.println(javacHeaderCount + " .h files generated by javac");
System.out.println(javahHeaderCount + " .h files generated by javah");
System.out.println(compareCount + " header files compared");
if (javacHeaderCount != javahHeaderCount || javacHeaderCount != compareCount)
error("inconsistent counts");
if (errors > 0)
throw new Exception(errors + " errors occurred");
}
String inferBinaryName(File file) {
String name = file.getName();
return name.substring(0, name.length() - ".class".length()).replace("$", ".");
}
/** Compare two directories.
* @param f1 The golden directory
* @param f2 The directory to be compared
*/
void compare(File f1, File f2) {
compare(f1, f2, null);
}
/** Compare two files or directories
* @param f1 The golden directory
* @param f2 The directory to be compared
* @param p An optional path identifying a file within the two directories
*/
void compare(File f1, File f2, String p) {
File f1p = (p == null ? f1 : new File(f1, p));
File f2p = (p == null ? f2 : new File(f2, p));
if (f1p.isDirectory() && f2p.isDirectory()) {
Set<String> children = new HashSet<String>();
children.addAll(Arrays.asList(f1p.list()));
children.addAll(Arrays.asList(f2p.list()));
for (String c: children) {
compare(f1, f2, new File(p, c).getPath()); // null-safe for p
}
}
else if (f1p.isFile() && f2p.isFile()) {
System.out.println("checking " + p);
compareCount++;
String s1 = read(f1p);
String s2 = read(f2p);
if (!s1.equals(s2)) {
System.out.println("File: " + f1p + "\n" + s1);
System.out.println("File: " + f2p + "\n" + s2);
error("Files differ: " + f1p + " " + f2p);
}
}
else if (f1p.exists() && !f2p.exists())
error("Only in " + f1 + ": " + p);
else if (f2p.exists() && !f1p.exists())
error("Only in " + f2 + ": " + p);
else
error("Files differ: " + f1p + " " + f2p);
}
private String read(File f) {
try {
return new String(Files.readAllBytes(f.toPath()));
} catch (IOException e) {
error("error reading " + f + ": " + e);
return "";
}
}
private void error(String msg) {
System.out.println(msg);
errors++;
}
private int errors;
private int compareCount;
private int sourceFileCount;
}
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