PROG:

- fix display size
- fix display status
- review modulo DiffView

MP.FileData/MeasureUtils.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MP.FileData
+{
+    public class MeasureUtils
+    {
+        #region Public Fields
+
+        public static readonly string[] SizeSuffixes = { "b", "Kb", "Mb", "Gb", "Tb", "Pb", "Eb", "Zb", "Yb" };
+
+        #endregion Public Fields
+
+        #region Public Methods
+
+        /// <summary>
+        /// Calcola dimensione file automaticamwente secondo dimensione
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="decimalPlaces"></param>
+        /// <returns></returns>
+        /// <exception cref="ArgumentOutOfRangeException"></exception>
+        public static string SizeSuffix(Int64 value, int decimalPlaces = 1)
+        {
+            if (decimalPlaces < 0) { throw new ArgumentOutOfRangeException("decimalPlaces"); }
+            if (value < 0) { return "-" + SizeSuffix(-value, decimalPlaces); }
+            if (value == 0) { return string.Format("{0:n" + decimalPlaces + "} bytes", 0); }
+
+            // mag is 0 for bytes, 1 for KB, 2, for MB, etc.
+            int mag = (int)Math.Log(value, 1024);
+
+            // 1L << (mag * 10) == 2 ^ (10 * mag) [i.e. the number of bytes in the unit
+            // corresponding to mag]
+            decimal adjustedSize = (decimal)value / (1L << (mag * 10));
+
+            // make adjustment when the value is large enough that it would round up to 1000 or more
+            if (Math.Round(adjustedSize, decimalPlaces) >= 1000)
+            {
+                mag += 1;
+                adjustedSize /= 1024;
+            }
+
+            return string.Format("{0:n" + decimalPlaces + "} {1}",
+                adjustedSize,
+                SizeSuffixes[mag]);
+        }
+
+        #endregion Public Methods
+    }
+}