refactoring (*textRows).readRow in a more clear way

Author: zihengCat

packets.go

@@ -761,40 +761,40 @@ func (rows *textRows) readRow(dest []driver.Value) error{
  }
 
 // RowSet Packet
-varnint
-varisNullbool
-pos:=0
+var (
+nint
+isNullbool
+posint=0
+ )
 
 fori:=rangedest{
 // Read bytes and convert to string
 dest[i], isNull, n, err=readLengthEncodedString(data[pos:])
 pos+=n
-iferr==nil{
-if!isNull{
-if!mc.parseTime{
-continue
- } else{
-switchrows.rs.columns[i].fieldType{
-casefieldTypeTimestamp, fieldTypeDateTime,
-fieldTypeDate, fieldTypeNewDate:
-dest[i], err=parseDateTime(
-dest[i].([]byte),
-mc.cfg.Loc,
- )
-iferr==nil{
-continue
- }
-default:
-continue
- }
- }
 
- } else{
-dest[i] =nil
-continue
+iferr!=nil{
+returnerr
+ }
+
+ifisNull{
+dest[i] =nil
+continue
+ }
+
+if!mc.parseTime{
+continue
+ }
+
+// Parse time field
+switchrows.rs.columns[i].fieldType{
+casefieldTypeTimestamp,
+fieldTypeDateTime,
+fieldTypeDate,
+fieldTypeNewDate:
+ifdest[i], err=parseDateTime(dest[i].([]byte), mc.cfg.Loc); err!=nil{
+errLog.Print(err)
  }
  }
-returnerr// err != nil
  }
 
 returnnil