Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2007, 2013, 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

  * @summary javac should include basic ability to generate native headers

  */

 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;

 }