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langtools/src/share/classes/com/sun/tools/javah/Util.java

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+/*
+ * Copyright 2002-2004 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+package com.sun.tools.javah;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.ResourceBundle;
+import java.text.MessageFormat;
+import java.util.MissingResourceException;
+
+/**
+ * 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
+ *
+ */
+public class Util {
+
+    /*
+     * Help for verbosity.
+     */
+    public static boolean verbose = false;
+
+    public static void log(String s) {
+        System.out.println(s);
+    }
+
+
+    /*
+     * Help for loading localized messages.
+     */
+    private static ResourceBundle m;
+
+    private static void initMessages() {
+        try {
+            m=ResourceBundle.getBundle("com.sun.tools.javah.resources.l10n");
+        } catch (MissingResourceException mre) {
+            fatal("Error loading resources.  Please file a bug report.", mre);
+        }
+    }
+
+    public static String getText(String key) {
+        return getText(key, null, null);
+    }
+
+    private static String getText(String key, String a1, String a2){
+        if (m == null)
+            initMessages();
+        try {
+            return MessageFormat.format(m.getString(key),
+                                        new Object[] { a1, a2 });
+        } catch (MissingResourceException e) {
+            fatal("Key " + key + " not found in resources.", e);
+        }
+        return null; /* dead code */
+    }
+
+    /*
+     * Usage message.
+     */
+    public static void usage(int exitValue) {
+        if (exitValue == 0) {
+            System.out.println(getText("usage"));
+        } else {
+            System.err.println(getText("usage"));
+        }
+        System.exit(exitValue);
+    }
+
+    public static void version() {
+        System.out.println(getText("javah.version",
+                                   System.getProperty("java.version"), null));
+        System.exit(0);
+    }
+
+    /*
+     * Failure modes.
+     */
+    public static void bug(String key) {
+        bug(key, null);
+    }
+
+    public static void bug(String key, Exception e) {
+        if (e != null)
+            e.printStackTrace();
+        System.err.println(getText(key));
+        System.err.println(getText("bug.report"));
+        System.exit(11);
+    }
+
+    public static void error(String key) {
+        error(key, null);
+    }
+
+    public static void error(String key, String a1) {
+        error(key, a1, null);
+    }
+
+    public static void error(String key, String a1, String a2) {
+        error(key, a1, a2, false);
+    }
+
+    public static void error(String key, String a1, String a2,
+                             boolean showUsage) {
+        System.err.println("Error: " + getText(key, a1, a2));
+        if (showUsage)
+            usage(15);
+        System.exit(15);
+    }
+
+
+    private static void fatal(String msg) {
+        fatal(msg, null);
+    }
+
+    private static void fatal(String msg, Exception e) {
+        if (e != null) {
+            e.printStackTrace();
+        }
+        System.err.println(msg);
+        System.exit(10);
+    }
+
+    /*
+     * Support for platform specific things in javah, such as pragma
+     * directives, exported symbols etc.
+     */
+    static private ResourceBundle platform = null;
+
+    /*
+     * Set when platform has been initialized.
+     */
+    static private boolean platformInit = false;
+
+    static String getPlatformString(String key) {
+        if (!platformInit) {
+            initPlatform();
+            platformInit = true;
+        }
+        if (platform == null)
+            return null;
+        try {
+            return platform.getString(key);
+        } catch (MissingResourceException mre) {
+            return null;
+        }
+    }
+
+    private static void initPlatform() {
+        String os = System.getProperty("os.name");
+        if (os.startsWith("Windows")) {
+            os = "win32";
+        } else if (os.indexOf("Linux") >= 0) {
+            os = "Linux";
+        }
+        String arch = System.getProperty("os.arch");
+        String resname = "com.sun.tools.javah.resources." + os + "_" + arch;
+        try {
+            platform=ResourceBundle.getBundle(resname);
+        } catch (MissingResourceException mre) {
+            // fatal("Error loading resources.  Please file a bug report.", mre);
+        }
+    }
+}