jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javah/Util.java@a03c4a86ea2b

     1 /*

     2  * Copyright (c) 2002, 2013, 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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

    23  * questions.

    24  */

    27 package com.sun.tools.javah;

    29 import java.io.PrintWriter;

    30 import java.text.MessageFormat;

    31 import java.util.Locale;

    32 import java.util.ResourceBundle;

    33 import java.util.MissingResourceException;

    34 import javax.tools.Diagnostic;

    35 import javax.tools.Diagnostic.Kind;

    36 import javax.tools.DiagnosticListener;

    37 import javax.tools.JavaFileObject;

    39 /**

    40  * Messages, verbose and error handling support.

    41  *

    42  * For errors, the failure modes are:

    43  *      error -- User did something wrong

    44  *      bug   -- Bug has occurred in javah

    45  *      fatal -- We can't even find resources, so bail fast, don't localize

    46  *

    47  * <p><b>This is NOT part of any supported API.

    48  * If you write code that depends on this, you do so at your own

    49  * risk.  This code and its internal interfaces are subject to change

    50  * or deletion without notice.</b></p>

    51  */

    52 public class Util {

    53     /** Exit is used to replace the use of System.exit in the original javah.

    54      */

    55     public static class Exit extends Error {

    56         private static final long serialVersionUID = 430820978114067221L;

    57         Exit(int exitValue) {

    58             this(exitValue, null);

    59         }

    61         Exit(int exitValue, Throwable cause) {

    62             super(cause);

    63             this.exitValue = exitValue;

    64             this.cause = cause;

    65         }

    67         Exit(Exit e) {

    68             this(e.exitValue, e.cause);

    69         }

    71         public final int exitValue;

    72         public final Throwable cause;

    73     }

    75     /*

    76      * Help for verbosity.

    77      */

    78     public boolean verbose = false;

    80     public PrintWriter log;

    81     public DiagnosticListener<? super JavaFileObject> dl;

    83     Util(PrintWriter log, DiagnosticListener<? super JavaFileObject> dl) {

    84         this.log = log;

    85         this.dl = dl;

    86     }

    88     public void log(String s) {

    89         log.println(s);

    90     }

    93     /*

    94      * Help for loading localized messages.

    95      */

    96     private ResourceBundle m;

    98     private void initMessages() throws Exit {

    99         try {

   100             m = ResourceBundle.getBundle("com.sun.tools.javah.resources.l10n");

   101         } catch (MissingResourceException mre) {

   102             fatal("Error loading resources.  Please file a bug report.", mre);

   103         }

   104     }

   106     private String getText(String key, Object... args) throws Exit {

   107         if (m == null)

   108             initMessages();

   109         try {

   110             return MessageFormat.format(m.getString(key), args);

   111         } catch (MissingResourceException e) {

   112             fatal("Key " + key + " not found in resources.", e);

   113         }

   114         return null; /* dead code */

   115     }

   117     /*

   118      * Usage message.

   119      */

   120     public void usage() throws Exit {

   121         log.println(getText("usage"));

   122     }

   124     public void version() throws Exit {

   125         log.println(getText("javah.version",

   126                                    System.getProperty("java.version"), null));

   127     }

   129     /*

   130      * Failure modes.

   131      */

   132     public void bug(String key) throws Exit {

   133         bug(key, null);

   134     }

   136     public void bug(String key, Exception e) throws Exit {

   137         dl.report(createDiagnostic(Diagnostic.Kind.ERROR, key));

   138         dl.report(createDiagnostic(Diagnostic.Kind.NOTE, "bug.report"));

   139         throw new Exit(11, e);

   140     }

   142     public void error(String key, Object... args) throws Exit {

   143         dl.report(createDiagnostic(Diagnostic.Kind.ERROR, key, args));

   144         throw new Exit(15);

   145     }

   147     private void fatal(String msg, Exception e) throws Exit {

   148         dl.report(createDiagnostic(Diagnostic.Kind.ERROR, "", msg));

   149         throw new Exit(10, e);

   150     }

   152     private Diagnostic<JavaFileObject> createDiagnostic(

   153             final Diagnostic.Kind kind, final String code, final Object... args) {

   154         return new Diagnostic<JavaFileObject>() {

   155             public String getCode() {

   156                 return code;

   157             }

   158             public long getColumnNumber() {

   159                 return Diagnostic.NOPOS;

   160             }

   161             public long getEndPosition() {

   162                 return Diagnostic.NOPOS;

   163             }

   164             public Kind getKind() {

   165                 return kind;

   166             }

   167             public long getLineNumber() {

   168                 return Diagnostic.NOPOS;

   169             }

   170             public String getMessage(Locale locale) {

   171                 if (code.length() == 0)

   172                     return (String) args[0];

   173                 return getText(code, args); // FIXME locale

   174             }

   175             public long getPosition() {

   176                 return Diagnostic.NOPOS;

   177             }

   178             public JavaFileObject getSource() {

   179                 return null;

   180             }

   181             public long getStartPosition() {

   182                 return Diagnostic.NOPOS;

   183             }

   184         };

   185     }

   186 }

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