BitSharper.VarInt.VarInt C# (CSharp) Method

        public VarInt(byte[] buf, int offset)
        {
            var first = buf[offset];
            ulong val;
            if (first < 253)
            {
                // 8 bits.
                val = first;
            }
            else if (first == 253)
            {
                // 16 bits.
                val = (ushort) (buf[offset + 1] | (buf[offset + 2] << 8));
            }
            else if (first == 254)
            {
                // 32 bits.
                val = Utils.ReadUint32(buf, offset + 1);
            }
            else
            {
                // 64 bits.
                val = Utils.ReadUint32(buf, offset + 1) | (((ulong) Utils.ReadUint32(buf, offset + 5)) << 32);
            }
            Value = val;
        }