// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

namespace NuGet.Shared
{
    internal static class EncodingUtility
    {
        internal static string ToHex(byte[] bytes, int length)
        {
            char[] c = new char[length * 2];

            for (int index = 0, outIndex = 0; index < length; index++)
            {
                c[outIndex++] = ToHexChar(bytes[index] >> 4);
                c[outIndex++] = ToHexChar(bytes[index] & 0x0f);
            }

            return new string(c);
        }

        private static char ToHexChar(int input)
        {
            if (input > 9)
            {
                return (char)(input + 0x57);
            }
            else
            {
                return (char)(input + 0x30);
            }
        }
    }
}