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|
package humanbytes
import (
"fmt"
"strconv"
"strings"
)
var (
suffixes = map[string]int64{
"B": 0,
"K": 1024,
"M": 1024 * 1024,
"G": 1024 * 1024 * 1024,
"T": 1024 * 1024 * 1024 * 1024,
"P": 1024 * 1024 * 1024 * 1024 * 1024,
"KiB": 1024,
"MiB": 1024 * 1024,
"GiB": 1024 * 1024 * 1024,
"TiB": 1024 * 1024 * 1024 * 1024,
"PiB": 1024 * 1024 * 1024 * 1024 * 1024,
"KB": 1000,
"MB": 1000 * 1000,
"GB": 1000 * 1000 * 1000,
"TB": 1000 * 1000 * 1000 * 1000,
"PB": 1000 * 1000 * 1000 * 1000 * 1000,
}
suffixOrder = []string{
"P", "PiB", "PB",
"T", "TiB", "TB",
"G", "GiB", "GB",
"M", "MiB", "MB",
"K", "KiB", "KB",
"B"}
)
func Format(b int64) string {
for _, suffix := range suffixOrder {
divisor := suffixes[suffix]
if b < divisor {
continue
}
if suffix == "B" {
return fmt.Sprintf("%dB", b)
}
return fmt.Sprintf("%.2f%s", float64(b)/float64(divisor), suffix)
}
return fmt.Sprintf("%dB", b)
}
func Parse(s string) (int64, error) {
for suffix, factor := range suffixes {
if !strings.HasSuffix(s, suffix) {
continue
}
b, err := strconv.ParseInt(strings.TrimSuffix(s, suffix), 0, 64)
if err != nil {
return 0, err
}
return b * factor, nil
}
// No suffix: try parsing as a byte value
return strconv.ParseInt(s, 0, 64)
}
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