package main

import "fmt"

func fileSizeToString(fileSize int) string {
	binarySizes := []string{
		"B",
		"kiB",
		"MiB",
		"GiB",
		"TiB",
		"PiB",
		"EiB",
		"ZiB",
		"YiB",
		"RiB",
		"QiB",
	}

	smallerNumber := float64(fileSize)
	size := 0
	binarySizesCount := len(binarySizes)
	for smallerNumber >= 1024 || size >= binarySizesCount {
		smallerNumber /= 1024
		size++
	}
	return fmt.Sprintf("%.2f %v", smallerNumber, binarySizes[size])
}