From bebdd6f50511b5f8612b12602f9e19c08d94ac4b Mon Sep 17 00:00:00 2001
From: David Smith <dsmith@datasync.com>
Date: Tue, 10 Jan 2017 20:52:46 -0600
Subject: [PATCH] Backed out changeset: 4c169a99e505 Use local version instead
 of polluting the core assembly.

---
 TallyCore/Utility/StringUtility.cs | 51 ------------------------------
 1 file changed, 51 deletions(-)

diff --git a/TallyCore/Utility/StringUtility.cs b/TallyCore/Utility/StringUtility.cs
index dc11183a..2e64f23c 100644
--- a/TallyCore/Utility/StringUtility.cs
+++ b/TallyCore/Utility/StringUtility.cs
@@ -159,55 +159,4 @@ public int Compare(string x, string y)
 
         int IEqualityComparer.GetHashCode(object obj) => GetHashCode(obj as string);
     }
-
-    public static class DefaultUnicodeHashFunction
-    {
-        /// <summary>
-        /// Hashes the provided string using the given CompareOptions.
-        /// Doing this allows all custom compare options to be applied in determining the hash value.
-        /// </summary>
-        /// <param name="str">The string.</param>
-        /// <param name="info">The CompareInfo object doing the unicode-aware comparison.</param>
-        /// <param name="options">The options to apply to the comparison.</param>
-        /// <returns>Returns the hash code for the string.</returns>
-        public static int HashFunction(string str, CompareInfo info, CompareOptions options)
-        {
-            if (info == null)
-                throw new ArgumentNullException(nameof(info));
-
-            if (string.IsNullOrEmpty(str))
-                return 0;
-
-            SortKey sortOrder = info.GetSortKey(str, options);
-
-            int hash = GetByteArrayHash(sortOrder.KeyData);
-
-            return hash;
-        }
-
-        /// <summary>
-        /// Generates a hash code for an array of bytes.
-        /// </summary>
-        /// <param name="keyData">The key data.</param>
-        /// <returns>Returns a hash code value.</returns>
-        private static int GetByteArrayHash(byte[] keyData)
-        {
-            unchecked
-            {
-                const int p = 16777619;
-                int hash = (int)2166136261;
-
-                for (int i = 0; i < keyData.Length; i++)
-                    hash = (hash ^ keyData[i]) * p;
-
-                hash += hash << 13;
-                hash ^= hash >> 7;
-                hash += hash << 3;
-                hash ^= hash >> 17;
-                hash += hash << 5;
-                return hash;
-            }
-        }
-    }
-
 }