1 files changed, 155 insertions, 0 deletions
diff --git a/pki/base/common/src/com/netscape/certsrv/base/MessageFormatter.java b/pki/base/common/src/com/netscape/certsrv/base/MessageFormatter.java
new file mode 100644
index 000000000..796c4255b
--- /dev/null
+++ b/pki/base/common/src/com/netscape/certsrv/base/MessageFormatter.java
@@ -0,0 +1,155 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// 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 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package com.netscape.certsrv.base;
+
+
+import java.io.*;
+import java.util.*;
+import java.text.*;
+import java.lang.reflect.*;
+
+
+/**
+ * Factors out common function of formatting internatinalized 
+ * messages taking arguments and using  java.util.ResourceBundle 
+ * and java.text.MessageFormat mechanism.
+ * <P>
+ *
+ * @version $Revision$, $Date$
+ * @see java.text.MessageFormat
+ * @see java.util.ResourceBundle
+ */
+public class MessageFormatter {
+
+    private static final Class[] toStringSignature = { Locale.class };
+
+    /**
+     * Retrieves the localized string.
+     *
+     * @param locale end user locale
+     * @param resourceBundleBaseName resource bundle class name
+     * @param formatString format string
+     * @return localized string
+     */
+    public static String getLocalizedString(
+        Locale locale, String resourceBundleBaseName,
+        String formatString) {
+        return getLocalizedString(locale, resourceBundleBaseName, 
+                formatString, null);
+    }
+
+    /**
+     * Retrieves the localized string.
+     *
+     * @param locale end user locale
+     * @param resourceBundleBaseName resource bundle class name
+     * @param formatString format string
+     * @param params parameters to be substituted
+     * @return localized string
+     */
+    public static String getLocalizedString(
+        Locale locale, String resourceBundleBaseName,
+        String formatString, Object params) {
+        Object o[] = new Object[1];
+
+        o[0] = params;
+        return getLocalizedString(locale, resourceBundleBaseName, 
+                formatString, o);
+    }
+
+    /**
+     * Retrieves the localized string.
+     *
+     * @param locale end user locale
+     * @param resourceBundleBaseName resource bundle class name
+     * @param formatString format string
+     * @param params parameters to be substituted
+     * @return localized string
+     */
+    public static String getLocalizedString(
+        Locale locale, String resourceBundleBaseName,
+        String formatString, Object[] params) {
+
+        String localizedFormat = null;
+
+        try {
+            try {
+                // if you are worried about the efficiency of the
+                // following line, dont worry. ResourceBundle has
+                // an internal cache. So resource bundle wont be
+                // instantiated everytime you call toString().
+
+                localizedFormat = ResourceBundle.getBundle(
+                            resourceBundleBaseName, locale).getString(formatString);
+            } catch (MissingResourceException e) {
+                return formatString;
+				
+            }
+            Object[] localizedParams = params;
+            Object[] localeArg = null;
+
+            if (params != null) {
+                for (int i = 0; i < params.length; ++i) {
+                    if (!(params[i] instanceof String) ||
+                        !(params[i] instanceof Date) ||
+                        !(params[i] instanceof Number)) {
+                        if (localizedParams == params) {
+
+                            // only done once
+                            // NB if the following variant of cloning code is used
+                            //         localizedParams = (Object [])mParams.clone();
+                            // it causes ArrayStoreException in
+                            //         localizedParams[i] = params[i].toString();
+                            // below
+
+                            localizedParams = new Object[params.length];
+                            System.arraycopy(params, 0, localizedParams, 0,
+                                params.length);
+                        }
+                        try {
+                            Method toStringMethod = params[i].getClass().getMethod(
+                                    "toString", toStringSignature);
+
+                            if (localeArg == null) {
+                                // only done once
+                                localeArg = new Object[] { locale };
+                            }
+                            localizedParams[i] = toStringMethod.invoke(
+                                        params[i], localeArg);
+                        } catch (Exception e) {
+                            // no method for localization, fall back
+                            localizedParams[i] = params[i].toString();
+                        }
+                    }
+                }
+            }
+            try {
+                // XXX - runtime exception may be raised by the following function
+                MessageFormat format = new MessageFormat(localizedFormat);
+
+                return format.format(localizedParams);
+            } catch (IllegalArgumentException e) {
+                // XXX - for now, we just print the unformatted message
+                // if the exception is raised
+                return localizedFormat;
+            }
+        } catch (Exception e) {
+            return localizedFormat;
+        }
+    }
+}