Add Formula & Format support

row.go

@@ -2,8 +2,8 @@ package xls
 
 type rowInfo struct {
 	Index    uint16
-	Fcell    uint16
-	Lcell    uint16
+	First    uint16
+	Last     uint16
 	Height   uint16
 	Notused  uint16
 	Notused2 uint16
@@ -20,27 +20,30 @@ type Row struct {
 //Col Get the Nth Col from the Row, if has not, return nil.
 //Suggest use Has function to test it.
 func (r *Row) Col(i int) string {
-	serial := uint16(i)
+	var val string
+	var serial = uint16(i)
+
 	if ch, ok := r.cols[serial]; ok {
-		strs := ch.String(r.wb)
-		return strs[0]
+		val = ch.String(r.wb)[0]
 	} else {
 		for _, v := range r.cols {
 			if v.FirstCol() <= serial && v.LastCol() >= serial {
-				strs := v.String(r.wb)
-				return strs[serial-v.FirstCol()]
+				val = v.String(r.wb)[serial-v.FirstCol()]
+
+				break
 			}
 		}
 	}
-	return ""
-}
 
-//LastCol Get the number of Last Col of the Row.
-func (r *Row) LastCol() int {
-	return int(r.info.Lcell)
+	return val
 }
 
 //FirstCol Get the number of First Col of the Row.
 func (r *Row) FirstCol() int {
-	return int(r.info.Fcell)
+	return int(r.info.First)
+}
+
+//LastCol Get the number of Last Col of the Row.
+func (r *Row) LastCol() int {
+	return int(r.info.Last)
 }