twins-upstream/util.go

package main

import "fmt"

func formatFileSize(b int64) string {
	const unit = 1000
	if b < unit {
		return fmt.Sprintf("%d B", b)
	}
	div, exp := int64(unit), 0
	for n := b / unit; n >= unit; n /= unit {
		div *= unit
		exp++
	}
	return fmt.Sprintf("%.0f %cB",
		float64(b)/float64(div), "KMGTPE"[exp])
}