Killed history

NadekoBot.Core/Common/Yml/YamlHelper.cs

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+namespace NadekoBot.Common.Yml
+{
+    public class YamlHelper
+    {
+        // https://github.com/aaubry/YamlDotNet/blob/0f4cc205e8b2dd8ef6589d96de32bf608a687c6f/YamlDotNet/Core/Scanner.cs#L1687
+        /// <summary>
+        /// This is modified code from yamldotnet's repo which handles parsing unicode code points
+        /// it is needed as yamldotnet doesn't support unescaped unicode characters 
+        /// </summary>
+        /// <param name="point">Unicode code point</param>
+        /// <returns>Actual character</returns>
+        public static string UnescapeUnicodeCodePoint(string point)
+        {
+            var character = 0;
+
+            // Scan the character value.
+
+            foreach(var c in point)
+            {
+                if (!IsHex(c))
+                {
+                    return point;
+                }
+                character = (character << 4) + AsHex(c);
+            }
+
+            // Check the value and write the character.
+
+            if (character >= 0xD800 && character <= 0xDFFF || character > 0x10FFFF)
+            {
+                return point;
+            }
+
+            return char.ConvertFromUtf32(character);
+        }
+        
+        public static bool IsHex(char c)
+        {
+            return
+                (c >= '0' && c <= '9') ||
+                (c >= 'A' && c <= 'F') ||
+                (c >= 'a' && c <= 'f');
+        }
+        
+        public static int AsHex(char c)
+        {
+            if (c <= '9')
+            {
+                return c - '0';
+            }
+            if (c <= 'F')
+            {
+                return c - 'A' + 10;
+            }
+            return c - 'a' + 10;
+        }
+    }
+}