1 files changed, 138 insertions, 0 deletions
diff --git a/pki/base/console/src/com/netscape/admin/certsrv/misc/MessageFormatter.java b/pki/base/console/src/com/netscape/admin/certsrv/misc/MessageFormatter.java
new file mode 100644
index 000000000..1ec1e72ba
--- /dev/null
+++ b/pki/base/console/src/com/netscape/admin/certsrv/misc/MessageFormatter.java
@@ -0,0 +1,138 @@
+// --- 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.admin.certsrv.misc;
+
+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>
+ *
+ * @author galperin
+ * @version $Revision$, $Date$
+ * @see java.text.MessageFormat
+ * @see java.util.ResourceBundle
+ */
+public class MessageFormatter {
+
+    private static final Class [] toStringSignature = { Locale.class };
+
+    public static String getLocalizedString(
+            Locale locale, String resourceBundleBaseName,
+            String keyword) {
+        return getLocalizedString(locale, resourceBundleBaseName,
+            keyword, null);
+    }
+
+    public static String getLocalizedString(
+            Locale locale, String resourceBundleBaseName,
+            String keyword, Object params) {
+        Object o[] = new Object[1];
+        o[0] = params;
+        return getLocalizedString(locale, resourceBundleBaseName,
+            keyword, o);
+    }
+
+    public static String getLocalizedString(
+            String resourceBundleBaseName,
+            String keyword, Object param) {
+        Object o[] = new Object[1];
+        o[0] = param;
+        return getLocalizedString(Locale.getDefault(), resourceBundleBaseName,
+            keyword, o);
+    }
+
+    public static String getLocalizedString(
+            String resourceBundleBaseName,
+            String keyword, Object [] params) {
+        return getLocalizedString(Locale.getDefault(), resourceBundleBaseName,
+                keyword, params);
+    }
+
+    public static String getLocalizedString(
+            Locale locale, String resourceBundleBaseName,
+            String keyword, Object [] params) {
+
+        String localizedFormat = null;
+
+        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(keyword);
+        } catch (MissingResourceException e)  {
+            return "Failed resolving format [" + keyword +
+                    "] in resource bundle [" +
+                    resourceBundleBaseName + "] for locale [" +
+                    locale + "]";
+        }
+        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;
+        }
+    }
+}