Shifty bits.go

WriteInt

func WriteInt(wr io.Writer, num uint64) error {
	var shifty uint = 64 - 8 // 64 bit integer mines 8 bit integer (byte)
	
	// Our algorithm simply doesn't write anything for a value of zero, but we still need to write something as per the protocol. Handle it as a special case.
	if num == 0 {
		return writeByte(wr, 0x00)
	}
	
	sentFirst := false
	
	for ; shifty < 64; shifty -= 7 {
		b := byte((num & (0x7F << shifty)) >> shifty)
		if b == 0 && !sentFirst {
			continue
		}
		sentFirst = true
		if shifty > 0 {
			b = b | 0x80
		}
		err := writeByte(wr, b)
		if err != nil {
			return err
		}
	}
	return nil
}