feat(Helpers): A function that converts a long into a human readable …

…file-size string.

Helpers/Long/LongExtensions.cs

@@ -0,0 +1,27 @@
+namespace Orchard.Tools.Helpers.Long {
+    using System;
+    using System.Collections.Generic;
+
+    public static class LongExtensions {
+        // Should be good enough for now. Will be fun reading this comment in 20 years ;)
+        private static readonly List<string> units = new List<string>(5) { "B", "KB", "MB", "GB", "TB" };
+
+        public static string ToHumanReadableString(this long bytes) {
+            var sizeAndUnit = ConvertToNextUnit(bytes, units[0]);
+            var numberOfDecimalPlaces = units[0] == sizeAndUnit.Item2 ? 0 : units.IndexOf(sizeAndUnit.Item2) - 1;
+            return string.Format("{0} {1}", Math.Round(sizeAndUnit.Item1, numberOfDecimalPlaces), sizeAndUnit.Item2);
+        }
+
+        private static Tuple<double, string> ConvertToNextUnit(double size, string unit) {
+            var indexOfUnit = units.IndexOf(unit);
+
+            if ( size > 1024 && indexOfUnit < units.Count - 1 ) {
+                size = size / 1024;
+                unit = units[indexOfUnit + 1];
+                return ConvertToNextUnit(size, unit);
+            }
+
+            return new Tuple<double, string>(size, unit);
+        }
+    }
+}

Orchard.Tools.csproj

@@ -112,6 +112,7 @@
     <Compile Include="Commands\CodeGenerationCommands.cs" />
     <Compile Include="Commands\TemplateInfo.cs" />
     <Compile Include="Helpers\Html\HtmlHelperExtensions.cs" />
+    <Compile Include="Helpers\Long\LongExtensions.cs" />
     <Compile Include="Helpers\Resources\ResourceDefinitionExtensions.cs" />
     <Compile Include="Helpers\Resources\ResourceManifestExtensions.cs" />
     <Compile Include="Helpers\Strings\StringExtensions.cs" />