// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
namespace System.ServiceModel.Channels
{
    internal static class BinaryIntEncoder
    {
        public const int MaxEncodedSize = 5;
 
        public static int Encode(int value, byte[] bytes, int offset)
        {
            int count = 1;
            while ((value & 0xFFFFFF80) != 0)
            {
                bytes[offset++] = (byte)((value & 0x7F) | 0x80);
                count++;
                value >>= 7;
            }
            bytes[offset] = (byte)value;
            return count;
        }
 
        public static int GetEncodedSize(int value)
        {
            if (value < 0)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException(nameof(value), value,
                    SRP.ValueMustBeNonNegative));
            }
 
            int count = 1;
            while ((value & 0xFFFFFF80) != 0)
            {
                count++;
                value >>= 7;
            }
            return count;
        }
    }
}