61 lines
939 B
Go
61 lines
939 B
Go
package strutil
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import (
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"fmt"
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"math"
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)
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var (
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sizesIEC = []string{
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"B",
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"KiB",
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"MiB",
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"GiB",
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"TiB",
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"PiB",
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"EiB",
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"ZiB",
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"YiB",
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}
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sizes = []string{
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"B",
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"KB",
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"MB",
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"GB",
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"TB",
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"PB",
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"EB",
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"ZB",
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"YB",
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}
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)
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func logn(n, b float64) float64 {
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return math.Log(n) / math.Log(b)
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}
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func humanateBytes(s uint64, base float64, sizes []string) string {
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if s < 10 {
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return fmt.Sprintf("%dB", s)
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}
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e := math.Floor(logn(float64(s), base))
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suffix := sizes[int(e)]
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val := float64(s) / math.Pow(base, math.Floor(e))
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f := "%.0f"
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if val < 10 {
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f = "%.1f"
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}
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return fmt.Sprintf(f+"%s", val, suffix)
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}
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// FileSize calculates the file size and generate user-friendly string.
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func FileSizeIEC(s uint64) string {
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return humanateBytes(s, 1024, sizesIEC)
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}
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// FileSize calculates the file size and generate user-friendly string.
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func FileSize(s uint64) string {
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return humanateBytes(s, 1000, sizes)
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}
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