rangeutils

Documentation

Index

• func CalculateBreakRange(startPieceNum, pieceContSize int, rangeLength int64) (string, error)
• func CalculatePieceNum(rangeStr string) int
• func CalculatePieceRange(pieceNum int, pieceSize int32) string
• func CalculatePieceSize(rangeStr string) int64
• func ParsePieceIndex(rangeStr string) (start, end int64, err error)

Functions

func CalculateBreakRange

func CalculateBreakRange(startPieceNum, pieceContSize int, rangeLength int64) (string, error)

CalculateBreakRange calculates the start and end of piece with the following formula:

start = pieceNum * pieceSize
end = rangeLength - 1

The different with the CalculatePieceRange function is that the end is calculated by rangeLength which is passed in by the caller itself.

func CalculatePieceNum

func CalculatePieceNum(rangeStr string) int

CalculatePieceNum calculates the number of piece according to the parameter range.

func CalculatePieceRange

func CalculatePieceRange(pieceNum int, pieceSize int32) string

CalculatePieceRange calculates the start and end of piece with the following formula:

start = pieceNum * pieceSize
end = start + pieceSize - 1

func CalculatePieceSize

func CalculatePieceSize(rangeStr string) int64

CalculatePieceSize calculates the size of piece according to the parameter range.

func ParsePieceIndex

func ParsePieceIndex(rangeStr string) (start, end int64, err error)

ParsePieceIndex parses the start and end index ​​according to range string. rangeStr: "start-end"