Move more helper methods around

SabreTools.Core/Tools/TextHelper.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -7,6 +8,58 @@ namespace SabreTools.Core.Tools
 {
     public static class TextHelper
     {
+        #region Conversion
+
+        /// <summary>
+        /// Convert a byte array to a hex string
+        /// </summary>
+        public static string? ByteArrayToString(byte[]? bytes)
+        {
+            // If we get null in, we send null out
+            if (bytes == null)
+                return null;
+
+            try
+            {
+                string hex = BitConverter.ToString(bytes);
+                return hex.Replace("-", string.Empty).ToLowerInvariant();
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Convert a hex string to a byte array
+        /// </summary>
+        public static byte[]? StringToByteArray(string? hex)
+        {
+            // If we get null in, we send null out
+            if (string.IsNullOrWhiteSpace(hex))
+                return null;
+
+            try
+            {
+                int NumberChars = hex.Length;
+                byte[] bytes = new byte[NumberChars / 2];
+                for (int i = 0; i < NumberChars; i += 2)
+                {
+                    bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);
+                }
+
+                return bytes;
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        #endregion
+
+        #region Normalization
+
         /// <summary>
         /// Normalize a string to the WoD standard
         /// </summary>
@@ -75,6 +128,8 @@ namespace SabreTools.Core.Tools
             return new string(input.Where(c => !invalidPath.Contains(c)).ToArray());
         }
 
+        #endregion
+
         #region Helpers
 
         /// <summary>