wip: oci

tool/human/size.go

@@ -0,0 +1,71 @@
+package human
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+func Size(size int64) string {
+	if size < 0 {
+		return "-" + Size(-size)
+	}
+
+	if size < 1024 {
+		return "0 B"
+	}
+
+	units := []string{"KB", "MB", "GB", "TB", "PB", "EB"}
+	div := int64(1024)
+	exp := 0
+
+	for i := 1; i < len(units); i++ {
+		nextDiv := div * 1024
+		if size < nextDiv {
+			break
+		}
+		div = nextDiv
+		exp = i
+	}
+
+	value := float64(size) / float64(div)
+	if value == float64(int64(value)) {
+		return fmt.Sprintf("%.0f %s", value, units[exp])
+	}
+	return fmt.Sprintf("%.2f %s", value, units[exp])
+}
+
+func Duration(d time.Duration) string {
+	if d < 0 {
+		return "-" + Duration(-d)
+	}
+
+	totalSeconds := int64(d.Seconds())
+	days := totalSeconds / 86400
+	hours := (totalSeconds % 86400) / 3600
+	minutes := (totalSeconds % 3600) / 60
+	seconds := totalSeconds % 60
+	nanos := d.Nanoseconds() % int64(time.Second)
+
+	var parts []string
+	if days > 0 {
+		parts = append(parts, fmt.Sprintf("%dd", days))
+	}
+	if hours > 0 {
+		parts = append(parts, fmt.Sprintf("%dh", hours))
+	}
+	if minutes > 0 {
+		parts = append(parts, fmt.Sprintf("%dm", minutes))
+	}
+
+	if nanos > 0 {
+		secWithNanos := float64(seconds) + float64(nanos)/1e9
+		parts = append(parts, fmt.Sprintf("%.2fs", secWithNanos))
+	} else if seconds > 0 {
+		parts = append(parts, fmt.Sprintf("%ds", seconds))
+	} else if len(parts) == 0 {
+		return "0s"
+	}
+
+	return strings.Join(parts, " ")
+}