1 /*

     2  * Copyright (c) 2013, 2016, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 package toolbox;

    25 

    26 import java.util.ArrayList;

    27 import java.util.Arrays;

    28 import java.util.HashMap;

    29 import java.util.List;

    30 import java.util.Map;

    31 

    32 /**

    33  * A task to configure and run the native header tool, javah.

    34  */

    35 public class JavahTask extends AbstractTask<JavahTask> {

    36     private String classpath;

    37     private List<String> options;

    38     private List<String> classes;

    39 

    40     /**

    41      * Create a task to execute {@code javah} using {@code CMDLINE} mode.

    42      * @param toolBox the {@code ToolBox} to use

    43      */

    44     public JavahTask(ToolBox toolBox) {

    45         super(toolBox, Task.Mode.CMDLINE);

    46     }

    47 

    48     /**

    49      * Sets the classpath.

    50      * @param classpath the classpath

    51      * @return this task object

    52      */

    53     public JavahTask classpath(String classpath) {

    54         this.classpath = classpath;

    55         return this;

    56     }

    57 

    58     /**

    59      * Sets the options.

    60      * @param options the options

    61      * @return this task object

    62      */

    63     public JavahTask options(String... options) {

    64         this.options = Arrays.asList(options);

    65         return this;

    66     }

    67 

    68     /**

    69      * Sets the classes to be analyzed.

    70      * @param classes the classes

    71      * @return this task object

    72      */

    73     public JavahTask classes(String... classes) {

    74         this.classes = Arrays.asList(classes);

    75         return this;

    76     }

    77 

    78     /**

    79      * {@inheritDoc}

    80      * @return the name "javah"

    81      */

    82     @Override

    83     public String name() {

    84         return "javah";

    85     }

    86 

    87     /**

    88      * Calls the javah tool with the arguments as currently configured.

    89      * @return a Result object indicating the outcome of the task

    90      * and the content of any output written to stdout, stderr, or the

    91      * main stream provided to the task.

    92      * @throws TaskError if the outcome of the task is not as expected.

    93      */

    94     @Override

    95     public Task.Result run() {

    96         List<String> args = new ArrayList<>();

    97         if (options != null)

    98             args.addAll(options);

    99         if (classpath != null) {

   100             args.add("-classpath");

   101             args.add(classpath);

   102         }

   103         if (classes != null)

   104             args.addAll(classes);

   105 

   106         AbstractTask.WriterOutput direct = new AbstractTask.WriterOutput();

   107         // These are to catch output to System.out and System.err,

   108         // in case these are used instead of the primary streams

   109         AbstractTask.StreamOutput sysOut = new AbstractTask.StreamOutput(System.out, System::setOut);

   110         AbstractTask.StreamOutput sysErr = new AbstractTask.StreamOutput(System.err, System::setErr);

   111         int rc;

   112         Map<Task.OutputKind, String> outputMap = new HashMap<>();

   113         try {

   114             rc = com.sun.tools.javah.Main.run(args.toArray(new String[args.size()]), direct.pw);

   115         } finally {

   116             outputMap.put(Task.OutputKind.STDOUT, sysOut.close());

   117             outputMap.put(Task.OutputKind.STDERR, sysErr.close());

   118             outputMap.put(Task.OutputKind.DIRECT, direct.close());

   119         }

   120         return checkExit(new Task.Result(toolBox, this, rc, outputMap));

   121     }

   122 }