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format.lua

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local format = {}

local sizeUnits = { "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB" }

function format.fileSizeFormat (fileSize)

local unitIndex = 1

while fileSize >= 1024 and sizeUnits [unitIndex + 1] do

fileSize = fileSize / 1024

unitIndex = unitIndex + 1

end

if fileSize == math.floor (fileSize) then

return string.format ("%d %s", fileSize, sizeUnits [unitIndex])

else

return string.format ("%.2f %s", fileSize, sizeUnits [unitIndex])

end

end

return format