Add option to urlencode in upper case

Author: mythz

src/ServiceStack.Text/StringExtensions.cs

@@ -134,11 +134,12 @@ public static string DecodeJsv(this string value)
                         .Replace(TypeSerializer.DoubleQuoteString, JsWriter.QuoteString);
         }
 
-        public static string UrlEncode(this string text)
+        public static string UrlEncode(this string text, bool upperCase=false)
         {
             if (String.IsNullOrEmpty(text)) return text;
 
             var sb = new StringBuilder();
+            var fmt = upperCase ? "X2" : "x2";
 
             foreach (var charCode in Encoding.UTF8.GetBytes(text))
             {
@@ -158,7 +159,7 @@ public static string UrlEncode(this string text)
                 }
                 else
                 {
-                    sb.Append('%' + charCode.ToString("x2"));
+                    sb.Append('%' + charCode.ToString(fmt));
                 }
             }
 

tests/ServiceStack.Text.Tests/StringExtensionsTests.cs

@@ -127,6 +127,14 @@ public void Can_Url_Encode_String()
             Assert.That(decoded, Is.EqualTo(text));
         }
 
+        [Test]
+        public void Can_UrlEncode_in_upper_case()
+        {
+            var chars = "/=";
+            Assert.That(chars.UrlEncode(), Is.EqualTo("%2f%3d"));
+            Assert.That(chars.UrlEncode(upperCase:true), Is.EqualTo("%2F%3D"));
+        }
+
         [Test]
         public void Can_ToCamelCase_String()
         {