feat: initial goget release — modern IPv6-first download utility

internal/format/format.go

@@ -0,0 +1,44 @@
+//go:build linux || freebsd
+// +build linux freebsd
+
+package format
+
+import "fmt"
+
+// Bytes formats byte count as human-readable string (DECIMAL units: KB=1000)
+func Bytes(b int64) string {
+	const unit = 1000
+	if b < 0 {
+		return "? B"
+	}
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	units := []string{"B", "KB", "MB", "GB", "TB", "PB"}
+	value := float64(b)
+	exp := 0
+	for value >= unit && exp < len(units)-1 {
+		value /= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %s", value, units[exp])
+}
+
+// Speed formats speed as human-readable string (DECIMAL units)
+func Speed(speed float64) string {
+	const unit = 1000
+	if speed < 0 {
+		return "? B/s"
+	}
+	if speed < unit {
+		return fmt.Sprintf("%.1f B/s", speed)
+	}
+	units := []string{"B/s", "KB/s", "MB/s", "GB/s", "TB/s", "PB/s"}
+	value := speed
+	exp := 0
+	for value >= unit && exp < len(units)-1 {
+		value /= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %s", value, units[exp])
+}