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Simplify formatFileSize

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No need to use a loop with divisions and multiplications when we have logarithms.
This commit is contained in:
jvoisin 2024-02-27 20:40:43 +01:00 committed by Frédéric Guillot
parent 9a4a942cc4
commit f274394f0e
2 changed files with 8 additions and 10 deletions
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10
internal/template/functions.go
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@ -209,11 +209,7 @@ func formatFileSize(b int64) string {
if b < unit { if b < unit {
return fmt.Sprintf("%d B", b) return fmt.Sprintf("%d B", b)
} }
div, exp := int64(unit), 0 base := math.Log(float64(b)) / math.Log(unit)
for n := b / unit; n >= unit; n /= unit { number := math.Pow(unit, base-math.Floor(base))
div *= unit return fmt.Sprintf("%.1f %ciB", number, "KMGTPE"[int64(base)-1])
exp++
}
return fmt.Sprintf("%.1f %ciB",
float64(b)/float64(div), "KMGTPE"[exp])
} }

2
internal/template/functions_test.go
View file

@ -156,6 +156,8 @@ func TestFormatFileSize(t *testing.T) {
input int64 input int64
expected string expected string
}{ }{
{0, "0 B"},
{1, "1 B"},
{500, "500 B"}, {500, "500 B"},
{1024, "1.0 KiB"}, {1024, "1.0 KiB"},
{43520, "42.5 KiB"}, {43520, "42.5 KiB"},