AnalyzeRawProtobuf.Program.GetVarint C# (CSharp) Method

        private int GetVarint(out uint value)
        {
            int b = array[ix];
            value = (uint)b;
            if ((value & 0x80) == 0)
            {
                return 1;
            }

            value &= 0x7F;

            b = array[ix + 1];
            value |= ((uint)b & 0x7F) << 7;
            if ((b & 0x80) == 0)
            {
                return 2;
            }

            b = array[ix + 2];
            value |= ((uint)b & 0x7F) << 14;
            if ((b & 0x80) == 0)
            {
                return 3;
            }

            b = array[ix + 3];
            value |= ((uint)b & 0x7F) << 21;
            if ((b & 0x80) == 0)
            {
                return 4;
            }

            b = array[ix + 4];
            value |= (uint)b << 28; // can only use 4 bits from this chunk
            if ((b & 0xF0) == 0)
            {
                return 5;
            }

            throw new OverflowException();
        }