/* Copyright (c) 2023, 2024, Oracle and/or its affiliates. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2.0, as published by the Free Software Foundation. This program is designed to work with certain software (including but not limited to OpenSSL) that is licensed under separate terms, as designated in a particular file or component or in included license documentation. The authors of MySQL hereby grant you an additional permission to link the program and your derivative works with the separately licensed software that they have either included with the program or referenced in the documentation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /// @file concat.h /// /// Convenience function that concatenates arbitrary arguments, by /// feeding them to an ostringstream. #ifndef MYSQL_STRING_CONCAT_H_ #define MYSQL_STRING_CONCAT_H_ #include // std::ostringstream #include // std::string /// @addtogroup GroupLibsMysqlBinlogEvent /// @{ namespace mysql::binlog::event::string { namespace internal { // Helper for 'concat' (base case) inline void concat_to_stringstream([[maybe_unused]] std::ostringstream &out) {} // Helper for 'concat' (recursive) template void concat_to_stringstream(std::ostringstream &out, T first, Args... remainder) { out << first; concat_to_stringstream(out, remainder...); } } // namespace internal /// Convert all the arguments to strings and concatenate the strings. /// /// This feeds all arguments to a `std::ostringstream`, so supports all /// types for which `operator<<(std::ostringstream&, ...)` is defined. /// /// @param args Arguments to concatenate. /// /// @return The resulting std::string. template std::string concat(Args... args) { std::ostringstream out; internal::concat_to_stringstream(out, args...); return out.str(); } } // namespace mysql::binlog::event::string /// @} #endif // MYSQL_STRING_CONCAT_H_