bump version to 1.0.5.0, refactor patching logic, remove unused code

WeModPatcher/Models/Signature.cs

@@ -1,4 +1,4 @@
-using WeModPatcher.Utils;
+using System;
 
 namespace WeModPatcher.Models
 {
@@ -9,17 +9,40 @@ namespace WeModPatcher.Models
         public readonly byte[] Sequence;
         public readonly byte[] Mask;
         public readonly int Offset;
-        
+
         public int Length => Sequence.Length;
-        
+
         public static implicit operator byte[](Signature signature) => signature.Sequence;
-        
+
         public Signature(string signature, int offset, byte[] patchBytes, byte[] originalBytes)
         {
-            MemoryUtils.ParseSignature(signature, out Sequence, out Mask);
+            Parse(signature, out Sequence, out Mask);
             PatchBytes = patchBytes;
             OriginalBytes = originalBytes;
             Offset = offset;
         }
+
+        private static void Parse(string signatureStr, out byte[] pattern, out byte[] mask)
+        {
+            var parts = signatureStr.Split(new[] { ' ', '\t' }, StringSplitOptions.RemoveEmptyEntries);
+            var length = parts.Length;
+
+            pattern = new byte[length];
+            mask = new byte[length];
+
+            for (var i = 0; i < length; i++)
+            {
+                if (parts[i] == "??" || parts[i] == "?")
+                {
+                    pattern[i] = 0;
+                    // wildcard byte
+                    mask[i] = 0;
+                    continue;
+                }
+
+                pattern[i] = Convert.ToByte(parts[i], 16);
+                mask[i] = 1;
+            }
+        }
     }
-}
+}