1 /*

     2  * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 import java.io.*;

    25 import java.util.*;

    26 import javax.tools.*;

    27 

    28 /*

    29  * @test

    30  * @bug 6439940

    31  * @summary Cleanup javap implementation

    32  * @run main/othervm ListTest

    33  */

    34 public class ListTest {

    35     public static void main(String[] args) throws Exception {

    36         new ListTest().run();

    37     }

    38 

    39     ListTest() {

    40         String v = System.getProperty("view.cmd");

    41         //      v = "/opt/teamware/7.7/bin/filemerge -r";

    42         if (v != null) {

    43             viewResults = true;

    44             viewCmd = Arrays.asList(v.split(" +"));

    45         }

    46     }

    47 

    48     void run() throws Exception {

    49         StandardLocation[] locs = new StandardLocation[] {

    50             StandardLocation.PLATFORM_CLASS_PATH,

    51             StandardLocation.CLASS_PATH,

    52         };

    53 

    54         int count = 0;

    55         int pass = 0;

    56         for (StandardLocation loc: locs) {

    57             for (String testClassName: list(loc)) {

    58                 count++;

    59                 if (test(testClassName))

    60                     pass++;

    61             }

    62         }

    63 

    64         if (pass < count)

    65             throw new Error(pass + "/" + count + " test cases passed");

    66     }

    67 

    68     Iterable<String> list(StandardLocation loc) throws IOException {

    69         JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();

    70         StandardJavaFileManager sfm = compiler.getStandardFileManager(null, null, null);

    71         Set<JavaFileObject.Kind> kinds = Collections.singleton(JavaFileObject.Kind.CLASS);

    72 

    73         List<String> list = new ArrayList<String>();

    74         for (JavaFileObject fo: sfm.list(loc, testPackage, kinds, true)) {

    75             //System.err.println(com.sun.tools.javac.util.Old199.getPath(fo));

    76             list.add(sfm.inferBinaryName(loc, fo));

    77         }

    78         return list;

    79     }

    80 

    81     boolean test(String testClassName) throws Exception {

    82         String[] args = new String[options.size() + 1];

    83         options.toArray(args);

    84         args[args.length - 1] = testClassName;

    85         byte[] oldOut = runOldJavap(args);

    86         byte[] newOut = runNewJavap(args);

    87         boolean ok = equal(oldOut, newOut);

    88         System.err.println((ok ? "pass" : "FAIL") + ": " + testClassName);

    89         if (!ok && viewResults)

    90             view(oldOut, newOut);

    91         return ok;

    92     }

    93 

    94     byte[] runOldJavap(String[] args) {

    95         //System.err.println("OLD: " + Arrays.asList(args));

    96         PrintStream oldOut = System.out;

    97         ByteArrayOutputStream out = new ByteArrayOutputStream();

    98         System.setOut(new PrintStream(out));

    99         try {

   100             sun.tools.javap.Main.entry(args);

   101         } finally {

   102             System.setOut(oldOut);

   103         }

   104         return out.toByteArray();

   105     }

   106 

   107     byte[] runNewJavap(String[] args) {

   108         String[] nArgs = new String[args.length + 2];

   109         nArgs[0] = "-XDcompat";

   110         nArgs[1] = "-XDignore.symbol.file";

   111         System.arraycopy(args, 0, nArgs, 2, args.length);

   112         //System.err.println("NEW: " + Arrays.asList(nArgs));

   113         ByteArrayOutputStream out = new ByteArrayOutputStream();

   114         com.sun.tools.javap.Main.run(nArgs,

   115                                      new PrintWriter(new OutputStreamWriter(out), true));

   116         return out.toByteArray();

   117     }

   118 

   119     File write(byte[] text, String suffix) throws IOException {

   120         File f = new File("ListTest." + suffix);

   121         FileOutputStream out = new FileOutputStream(f);

   122         out.write(text);

   123         out.close();

   124         return f;

   125     }

   126 

   127     boolean equal(byte[] a1, byte[] a2) {

   128         return Arrays.equals(a1, a2);

   129     }

   130 

   131     void view(byte[] oldOut, byte[] newOut) throws Exception {

   132         File oldFile = write(oldOut, "old");

   133         File newFile = write(newOut, "new");

   134         List<String> cmd = new ArrayList<String>();

   135         cmd.addAll(viewCmd);

   136         cmd.add(oldFile.getPath());

   137         cmd.add(newFile.getPath());

   138         Process p = new ProcessBuilder(cmd).redirectErrorStream(true).start();

   139         p.getOutputStream().close();

   140         String line;

   141         BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));

   142         while ((line = in.readLine()) != null)

   143             System.err.println(line);

   144         in.close();

   145         p.waitFor();

   146     }

   147 

   148     String testPackage = "java.lang";

   149     List<String> options = Arrays.asList("-v");

   150     boolean viewResults;

   151     List<String> viewCmd;

   152 }