From e203fb71212e9774dacc0e13024731c6198dd2f3 Mon Sep 17 00:00:00 2001
From: Jason Nelson <jason@carbonmade.com>
Date: Mon, 1 Oct 2018 16:48:44 -0700
Subject: [PATCH] Add GetString(ReadOnlySpan<byte> polyfill to Encoding

---
 .../Common/Extensions/EncoderExtensions.cs    | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 src/ImageSharp/Common/Extensions/EncoderExtensions.cs

diff --git a/src/ImageSharp/Common/Extensions/EncoderExtensions.cs b/src/ImageSharp/Common/Extensions/EncoderExtensions.cs
new file mode 100644
index 0000000000..e6b800e86a
--- /dev/null
+++ b/src/ImageSharp/Common/Extensions/EncoderExtensions.cs
@@ -0,0 +1,34 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+#if !NETCOREAPP2_1
+using System;
+using System.Text;
+
+namespace SixLabors.ImageSharp
+{
+    /// <summary>
+    /// Extension methods for the <see cref="Encoder"/> type.
+    /// </summary>
+    internal static unsafe class EncoderExtensions
+    {
+        /// <summary>
+        /// Gets a string from the provided buffer data.
+        /// </summary>
+        /// <param name="encoding">The encoding.</param>
+        /// <param name="buffer">The buffer.</param>
+        /// <returns>The string.</returns>
+        public static string GetString(this Encoding encoding, ReadOnlySpan<byte> buffer)
+        {
+#if NETSTANDARD1_1
+            return encoding.GetString(buffer.ToArray());
+#else
+            fixed (byte* bytes = buffer)
+            {
+                return encoding.GetString(bytes, buffer.Length);
+            }
+#endif
+        }
+    }
+}
+#endif
\ No newline at end of file