Initial QSfera import

Server/vendor/github.com/gookit/goutil/mathutil/format.go

@@ -0,0 +1,87 @@
+package mathutil
+
+import "fmt"
+
+// DataSize format bytes number friendly. eg: 1024 => 1KB, 1024*1024 => 1MB
+//
+// Usage:
+//
+//	file, err := os.Open(path)
+//	fl, err := file.Stat()
+//	fmtSize := DataSize(fl.Size())
+func DataSize(size uint64) string {
+	switch {
+	case size < 1024:
+		return fmt.Sprintf("%dB", size)
+	case size < 1024*1024:
+		return fmt.Sprintf("%.2fK", float64(size)/1024)
+	case size < 1024*1024*1024:
+		return fmt.Sprintf("%.2fM", float64(size)/1024/1024)
+	default:
+		return fmt.Sprintf("%.2fG", float64(size)/1024/1024/1024)
+	}
+}
+
+// FormatBytes Format the byte size to be a readable string. eg: 1024 => 1 KB
+func FormatBytes(bytes int) string {
+	const unit = 1024
+	if bytes < unit {
+		return fmt.Sprintf("%d B", bytes)
+	}
+
+	div, exp := int64(unit), 0
+	for n := bytes / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.2f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
+}
+
+var timeFormats = [][]int{
+	{0},
+	{1},
+	{2, 1},
+	{60},
+	{120, 60},
+	{3600},
+	{7200, 3600},
+	{86400},
+	{172800, 86400}, // second elem is unit.
+	{2592000},
+	{2592000 * 2, 2592000},
+}
+
+var timeMessages = []string{
+	"< 1 sec", "1 sec", "secs", "1 min", "mins", "1 hr", "hrs", "1 day", "days", "1 month", "months",
+}
+
+// HowLongAgo format a seconds, get how lang ago. eg: 1 day, 1 week
+func HowLongAgo(sec int64) string {
+	intVal := int(sec)
+	length := len(timeFormats)
+
+	for i, item := range timeFormats {
+		if intVal >= item[0] {
+			ni := i + 1
+			match := false
+
+			if ni < length { // next exists
+				next := timeFormats[ni]
+				if intVal < next[0] { // current <= intVal < next
+					match = true
+				}
+			} else if ni == length { // current is last
+				match = true
+			}
+
+			if match { // match success
+				if len(item) == 1 {
+					return timeMessages[i]
+				}
+				return fmt.Sprintf("%d %s", intVal/item[1], timeMessages[i])
+			}
+		}
+	}
+
+	return "unknown" // He should never happen
+}