Method ParseText

IceFireDB-SQLite/pkg/mysql/mysql/rowdata.go:21–77

(f []*Field, dst []FieldValue)

}

func (p RowData) ParseText(f []*Field, dst []FieldValue) ([]FieldValue, error) {
	for len(dst) < len(f) {
		dst = append(dst, FieldValue{})
	}
	data := dst[:len(f)]

	var err error
	var v []byte
	var isNull bool
	var pos int = 0
	var n int = 0

	for i := range f {
		v, isNull, n, err = LengthEncodedString(p[pos:])
		if err != nil {
			return nil, errors.Trace(err)
		}

		pos += n

		if isNull {
			data[i].Type = FieldValueTypeNull
		} else {
			isUnsigned := f[i].Flag&UNSIGNED_FLAG != 0

			switch f[i].Type {
			case MYSQL_TYPE_TINY, MYSQL_TYPE_SHORT, MYSQL_TYPE_INT24,
				MYSQL_TYPE_LONGLONG, MYSQL_TYPE_LONG, MYSQL_TYPE_YEAR:
				if isUnsigned {
					var val uint64
					data[i].Type = FieldValueTypeUnsigned
					val, err = strconv.ParseUint(utils.ByteSliceToString(v), 10, 64)
					data[i].value = val
				} else {
					var val int64
					data[i].Type = FieldValueTypeSigned
					val, err = strconv.ParseInt(utils.ByteSliceToString(v), 10, 64)
					data[i].value = utils.Int64ToUint64(val)
				}
			case MYSQL_TYPE_FLOAT, MYSQL_TYPE_DOUBLE:
				var val float64
				data[i].Type = FieldValueTypeFloat
				val, err = strconv.ParseFloat(utils.ByteSliceToString(v), 64)
				data[i].value = utils.Float64ToUint64(val)
			default:
				data[i].Type = FieldValueTypeString
				data[i].str = append(data[i].str[:0], v...)
			}

			if err != nil {
				return nil, errors.Trace(err)
			}
		}
	}

	return data, nil
}