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/* * Copyright (c) 2015, 2023, 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 also distributed 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 included with MySQL. * * 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 */ #ifndef _QUERY_FORMATTER_H_ #define _QUERY_FORMATTER_H_ #include <string> #include <string.h> #include <stdint.h> #include <stdexcept> #include <sstream> #include "ngs/memory.h" #include "ngs_common/to_string.h" struct charset_info_st; namespace xpl { class Query_formatter { public: Query_formatter(ngs::PFS_string &query, charset_info_st &charser); template <typename Value_type> class No_escape { public: No_escape(const Value_type &value) : m_value(value) { } const Value_type &m_value; }; Query_formatter &operator % (const char *value); Query_formatter &operator % (const No_escape<const char *> &value); Query_formatter &operator % (const std::string &value); Query_formatter &operator % (const No_escape<std::string> &value); template<typename Value_type> Query_formatter &operator % (const Value_type &value) { return put(value); } private: template<typename Value_type> Query_formatter & put(const Value_type &value) { validate_next_tag(); std::string string_value = ngs::to_string(value); put_value(string_value.c_str(), string_value.length()); return *this; } template<typename Value_type> Query_formatter & put_fp(const Value_type &value) { std::stringstream stream; validate_next_tag(); stream << value; std::string string_value = stream.str(); put_value(string_value.c_str(), string_value.length()); return *this; } void put_value(const char *value, const std::size_t length); void put_value_and_escape(const char *value, const std::size_t length); void validate_next_tag(); ngs::PFS_string &m_query; charset_info_st &m_charset; std::size_t m_last_tag_position; }; template<> inline Query_formatter& Query_formatter::operator%<double>(const double &value) { return put_fp(value); } template<> inline Query_formatter& Query_formatter::operator%<float>(const float &value) { return put_fp(value); } } // namespace xpl #endif // _QUERY_FORMATTER_H_