Fixed commas in date formats. Bump version. Closes #22

Author: andersnm

src/ExcelNumberFormat/ExcelNumberFormat.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <TargetFrameworks>net20;netstandard1.0;netstandard2.0</TargetFrameworks>
-    <VersionPrefix>1.0.8</VersionPrefix>
+    <VersionPrefix>1.0.9</VersionPrefix>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Description>.NET library to parse ECMA-376 number format strings and format values like Excel and other spreadsheet softwares.</Description>

src/ExcelNumberFormat/Formatter.cs

@@ -202,7 +202,7 @@ private static string FormatDate(DateTime date, List<string> tokens, CultureInfo
                 else if (token.StartsWith("h", StringComparison.OrdinalIgnoreCase))
                 {
                     var digits = token.Length;
-                    if(containsAmPm)
+                    if (containsAmPm)
                         result.Append((date.Hour % 12).ToString("D" + digits));
                     else
                         result.Append(date.Hour.ToString("D" + digits));
@@ -256,6 +256,15 @@ private static string FormatDate(DateTime date, List<string> tokens, CultureInfo
                     result.Append(culture.DateTimeFormat.DateSeparator);
 #endif
                 }
+                else if (token == ",")
+                {
+                    while (i < tokens.Count - 1 && tokens[i + 1] == ",")
+                    {
+                        i++;
+                    }
+
+                    result.Append(",");
+                }
                 else
                 {
                     FormatLiteral(token, result);

src/ExcelNumberFormat/NumberFormat.cs

@@ -62,9 +62,6 @@ public NumberFormat(string formatString)
         /// <returns>The formatted string.</returns>
         public string Format(object value, CultureInfo culture)
         {
-            if (!IsValid || string.IsNullOrEmpty(FormatString))
-                CompatibleConvert.ToString(value, culture);
-
             var section = Evaluator.GetSection(Sections, value);
             if (section == null)
                 return CompatibleConvert.ToString(value, culture);

test/ExcelNumberFormat.Tests/Class1.cs

@@ -139,6 +139,8 @@ public void TestDate()
             Test(new DateTime(2020, 1, 1, 14, 35, 55), "m/d/yyyy\\ h:mm:ss;@", "1/1/2020 14:35:55");
             Test(new DateTime(2020, 1, 1, 14, 35, 55), "m/d/yyyy\\ hh:mm:ss AM/PM;@", "1/1/2020 02:35:55 PM");
             Test(new DateTime(2020, 1, 1, 16, 5, 6), "m/d/yyyy\\ h:m:s AM/PM;@", "1/1/2020 4:5:6 PM");
+            Test(new DateTime(2017, 10, 16, 0, 0, 0), "dddd, MMMM d, yyyy", "Monday, October 16, 2017");
+            Test(new DateTime(2017, 10, 16, 0, 0, 0), "dddd,,, MMMM d,, yyyy,,,,", "Monday, October 16, 2017,");
         }
 
         [TestMethod]