Fix byte conversions; add TB

src/utils/utils.go

@@ -7,27 +7,41 @@ import (
 	ui "github.com/cjbassi/termui"
 )
 
+var (
+	KB = uint64(math.Pow(2, 10))
+	MB = uint64(math.Pow(2, 20))
+	GB = uint64(math.Pow(2, 30))
+	TB = uint64(math.Pow(2, 40))
+)
+
 func BytesToKB(b uint64) float64 {
-	return float64(b) / math.Pow10(3)
+	return float64(b) / float64(KB)
 }
 
 func BytesToMB(b uint64) float64 {
-	return float64(b) / math.Pow10(6)
+	return float64(b) / float64(MB)
 }
 
 func BytesToGB(b uint64) float64 {
-	return float64(b) / math.Pow10(9)
+	return float64(b) / float64(GB)
+}
+
+func BytesToTB(b uint64) float64 {
+	return float64(b) / float64(TB)
 }
 
 func ConvertBytes(b uint64) (float64, string) {
-	if b >= 1000000000 {
-		return BytesToGB(uint64(b)), "GB"
-	} else if b >= 1000000 {
-		return BytesToMB(uint64(b)), "MB"
-	} else if b >= 1000 {
-		return BytesToKB(uint64(b)), "KB"
-	} else {
+	switch {
+	case b < KB:
 		return float64(b), "B"
+	case b < MB:
+		return BytesToKB(b), "KB"
+	case b < GB:
+		return BytesToMB(b), "MB"
+	case b < TB:
+		return BytesToGB(b), "GB"
+	default:
+		return BytesToTB(b), "TB"
 	}
 }