[TEST] Add a GPL snippet from mysql's Messages (GPL 2.0)

mondrian/src/main/java/mondrian/spi/Messages.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2002, 2024, Oracle and/or its affiliates.
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2.0, as published by
+ * the Free Software Foundation.
+ *
+ * This program is designed to work with certain software that is licensed under separate terms, as designated in a particular file or component or in
+ * included license documentation. The authors of MySQL hereby grant you an additional permission to link the program and your derivative works with the
+ * separately licensed software that they have either included with the program or referenced in the documentation.
+ *
+ * Without limiting anything contained in the foregoing, this file, which is part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
+ * version 1.0, a copy of which can be found at http://oss.oracle.com/licenses/universal-foss-exception.
+ *
+ * This program 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 2.0, for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+package mondrian.spi;
+
+import java.text.MessageFormat;
+import java.util.Locale;
+import java.util.MissingResourceException;
+import java.util.ResourceBundle;
+
+/**
+ * Support for localized messages.
+ */
+public class Messages {
+
+    private static final String BUNDLE_NAME = "com.mysql.cj.LocalizedErrorMessages";
+
+    private static final ResourceBundle RESOURCE_BUNDLE;
+    private static final Object[] emptyObjectArray = {};
+
+    static {
+        ResourceBundle temp = null;
+
+        //
+        // Overly-pedantic here, some appserver and JVM combos don't deal well with the no-args version, others don't deal well with the three-arg version, so
+        // we need to try both :(
+        //
+
+        try {
+            temp = ResourceBundle.getBundle(BUNDLE_NAME, Locale.getDefault(), Messages.class.getClassLoader());
+        } catch (Throwable t) {
+            try {
+                temp = ResourceBundle.getBundle(BUNDLE_NAME);
+            } catch (Throwable t2) {
+                RuntimeException rt = new RuntimeException("Can't load resource bundle due to underlying exception " + t.toString());
+                rt.initCause(t2);
+
+                throw rt;
+            }
+        } finally {
+            RESOURCE_BUNDLE = temp;
+        }
+    }
+
+    /**
+     * Returns the localized message for the given message key
+     *
+     * @param key
+     *            the message key
+     * @return The localized message for the key
+     */
+    public static String getString(String key) {
+        return getString(key, emptyObjectArray);
+    }
+
+    public static String getString(String key, Object[] args) {
+        if (RESOURCE_BUNDLE == null) {
+            throw new RuntimeException("Localized messages from resource bundle '" + BUNDLE_NAME + "' not loaded during initialization of driver.");
+        }
+
+        try {
+            if (key == null) {
+                throw new IllegalArgumentException("Message key can not be null");
+            }
+
+            String message = RESOURCE_BUNDLE.getString(key);
+
+            if (message == null) {
+                message = "Missing error message for key '" + key + "'";
+            }
+
+            return MessageFormat.format(message, args);
+        } catch (MissingResourceException e) {
+            return '!' + key + '!';
+        }
+    }
+
+    /**
+     * Dis-allow construction ...
+     */
+    private Messages() {
+    }
+
+}