1 files changed, 122 insertions, 0 deletions
diff --git a/jetty-start/src/main/java/org/eclipse/jetty/start/Utils.java b/jetty-start/src/main/java/org/eclipse/jetty/start/Utils.java
new file mode 100644
index 0000000000..89ec61eb3e
--- /dev/null
+++ b/jetty-start/src/main/java/org/eclipse/jetty/start/Utils.java
@@ -0,0 +1,122 @@
+//
+//  ========================================================================
+//  Copyright (c) 1995-2015 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.start;
+
+import java.util.Collection;
+
+public final class Utils
+{
+    public static String join(Object[] arr, String delim)
+    {
+        if (arr == null)
+        {
+            return "";
+        }
+
+        return join(arr,0,arr.length,delim);
+    }
+
+    public static String join(Object[] arr, int start, int end, String delim)
+    {
+        if (arr == null)
+        {
+            return "";
+        }
+        StringBuilder str = new StringBuilder();
+        for (int i = start; i < end; i++)
+        {
+            if (i > start)
+            {
+                str.append(delim);
+            }
+            str.append(arr[i]);
+        }
+        return str.toString();
+    }
+
+    public static String join(Collection<?> objs, String delim)
+    {
+        if (objs == null)
+        {
+            return "";
+        }
+        StringBuilder str = new StringBuilder();
+        boolean needDelim = false;
+        for (Object obj : objs)
+        {
+            if (needDelim)
+            {
+                str.append(delim);
+            }
+            str.append(obj);
+            needDelim = true;
+        }
+        return str.toString();
+    }
+
+    /**
+     * Is String null, empty, or consisting of only whitespace.
+     * 
+     * @param value
+     *            the value to test
+     * @return true if null, empty, or consisting of only whitespace
+     */
+    public static boolean isBlank(String value)
+    {
+        if (value == null)
+        {
+            return true;
+        }
+        int len = value.length();
+        for (int i = 0; i < len; i++)
+        {
+            int c = value.codePointAt(i);
+            if (!Character.isWhitespace(c))
+            {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Is String valid and has something other than whitespace
+     * 
+     * @param value
+     *            the value to test
+     * @return true if String has something other than whitespace
+     */
+    public static boolean isNotBlank(String value)
+    {
+        if (value == null)
+        {
+            return false;
+        }
+        int len = value.length();
+        for (int i = 0; i < len; i++)
+        {
+            int c = value.codePointAt(i);
+            if (!Character.isWhitespace(c))
+            {
+                return true;
+            }
+        }
+        return false;
+    }
+}