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java/org/apache/jasper/compiler/Localizer.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.jasper.compiler;
+
+import java.text.MessageFormat;
+import java.util.MissingResourceException;
+import java.util.ResourceBundle;
+
+import org.apache.jasper.runtime.ExceptionUtils;
+
+/**
+ * Class responsible for converting error codes to corresponding localized
+ * error messages.
+ *
+ * @author Jan Luehe
+ */
+public class Localizer {
+
+    private static ResourceBundle bundle;
+
+    static {
+        try {
+            bundle = ResourceBundle.getBundle("org.apache.jasper.resources.LocalStrings");
+        } catch (Throwable t) {
+            ExceptionUtils.handleThrowable(t);
+        }
+    }
+
+    /*
+     * Returns the localized error message corresponding to the given error
+     * code.
+     *
+     * If the given error code is not defined in the resource bundle for
+     * localized error messages, it is used as the error message.
+     *
+     * @param errCode Error code to localize
+     *
+     * @return Localized error message
+     */
+    public static String getMessage(String errCode) {
+        String errMsg = errCode;
+        try {
+            if (bundle != null) {
+                errMsg = bundle.getString(errCode);
+            }
+        } catch (MissingResourceException e) {
+        }
+        return errMsg;
+    }
+
+    /*
+     * Returns the localized error message corresponding to the given error
+     * code.
+     *
+     * If the given error code is not defined in the resource bundle for
+     * localized error messages, it is used as the error message.
+     *
+     * @param errCode Error code to localize
+     * @param args Arguments for parametric replacement
+     *
+     * @return Localized error message
+     */
+    public static String getMessage(String errCode, Object... args) {
+        String errMsg = getMessage(errCode);
+
+        if (args != null && args.length > 0) {
+            MessageFormat formatter = new MessageFormat(errMsg);
+            errMsg = formatter.format(args);
+        }
+
+        return errMsg;
+    }
+}