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

 /*

  * Copyright (c) 2002, 2008, 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.  Oracle designates this

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

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

  *

  * 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.

  */

 package com.sun.tools.javah;

 import java.io.PrintWriter;

 import java.text.MessageFormat;

 import java.util.Locale;

 import java.util.ResourceBundle;

 import java.util.MissingResourceException;

 import javax.tools.Diagnostic;

 import javax.tools.Diagnostic.Kind;

 import javax.tools.DiagnosticListener;

 import javax.tools.JavaFileObject;

 /**

  * Messages, verbose and error handling support.

  *

  * For errors, the failure modes are:

  *      error -- User did something wrong

  *      bug   -- Bug has occurred in javah

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

  *

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

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

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

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

  */

 public class Util {

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

      */

     public static class Exit extends Error {

         private static final long serialVersionUID = 430820978114067221L;

         Exit(int exitValue) {

             this(exitValue, null);

         }

         Exit(int exitValue, Throwable cause) {

             super(cause);

             this.exitValue = exitValue;

             this.cause = cause;

         }

         Exit(Exit e) {

             this(e.exitValue, e.cause);

         }

         public final int exitValue;

         public final Throwable cause;

     }

     /*

      * Help for verbosity.

      */

     public boolean verbose = false;

     public PrintWriter log;

     public DiagnosticListener<? super JavaFileObject> dl;

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

         this.log = log;

         this.dl = dl;

     }

     public void log(String s) {

         log.println(s);

     }

     /*

      * Help for loading localized messages.

      */

     private ResourceBundle m;

     private void initMessages() throws Exit {

         try {

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

         } catch (MissingResourceException mre) {

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

         }

     }

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

         if (m == null)

             initMessages();

         try {

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

         } catch (MissingResourceException e) {

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

         }

         return null; /* dead code */

     }

     /*

      * Usage message.

      */

     public void usage() throws Exit {

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

     }

     public void version() throws Exit {

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

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

     }

     /*

      * Failure modes.

      */

     public void bug(String key) throws Exit {

         bug(key, null);

     }

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

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

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

         throw new Exit(11, e);

     }

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

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

         throw new Exit(15);

     }

     private void fatal(String msg) throws Exit {

         fatal(msg, null);

     }

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

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

         throw new Exit(10, e);

     }

     private Diagnostic<JavaFileObject> createDiagnostic(

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

         return new Diagnostic<JavaFileObject>() {

             public String getCode() {

                 return code;

             }

             public long getColumnNumber() {

                 return Diagnostic.NOPOS;

             }

             public long getEndPosition() {

                 return Diagnostic.NOPOS;

             }

             public Kind getKind() {

                 return kind;

             }

             public long getLineNumber() {

                 return Diagnostic.NOPOS;

             }

             public String getMessage(Locale locale) {

                 if (code.length() == 0)

                     return (String) args[0];

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

             }

             public long getPosition() {

                 return Diagnostic.NOPOS;

             }

             public JavaFileObject getSource() {

                 return null;

             }

             public long getStartPosition() {

                 return Diagnostic.NOPOS;

             }

         };

     }

 }