108 lines
2.6 KiB
C++
108 lines
2.6 KiB
C++
#pragma once
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/*
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* Copyright (C) 2024 Brett Terpstra
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef BLT_LOGGING_LOGGING_H
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#define BLT_LOGGING_LOGGING_H
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#include <sstream>
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#include <string>
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#include <vector>
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#include <blt/meta/meta.h>
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namespace blt::logging
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{
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struct logger_t
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{
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explicit logger_t() = default;
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template <typename T>
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std::string print_value(T&& t)
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{
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static_assert(meta::is_streamable_v<T>, "T must be streamable in order to work with blt::logging!");
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m_stream.str("");
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m_stream.clear();
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m_stream << std::forward<T>(t);
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return m_stream.str();
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}
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template <typename... Args>
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std::string log(std::string fmt, Args&&... args)
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{
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compile(std::move(fmt));
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m_args_to_str.clear();
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m_args_to_str.resize(sizeof...(Args));
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insert(std::make_integer_sequence<size_t, sizeof...(Args)>{}, std::forward<Args>(args)...);
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finish();
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return to_string();
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}
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std::string to_string();
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private:
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template<typename... Args, size_t... Indexes>
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void insert(std::integer_sequence<size_t, Indexes...>, Args&&... args)
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{
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((handle_insert<Indexes>(std::forward<Args>(args))), ...);
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}
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template<size_t index, typename T>
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void handle_insert(T&& t)
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{
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m_args_to_str[index] = print_value(std::forward<T>(t));
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}
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void handle_fmt(std::string_view fmt);
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const std::string& get(size_t index);
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void compile(std::string fmt);
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bool consume_until_fmt();
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void finish();
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std::string m_fmt;
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std::stringstream m_stream;
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std::vector<std::string> m_args_to_str;
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size_t m_last_fmt_pos = 0;
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size_t m_arg_pos = 0;
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};
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void print(const std::string& fmt);
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void newline();
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logger_t& get_global_logger();
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template <typename... Args>
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void print(std::string fmt, Args&&... args)
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{
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auto& logger = get_global_logger();
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print(logger.log(std::move(fmt), std::forward<Args>(args)...));
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}
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template <typename... Args>
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void println(std::string fmt, Args&&... args)
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{
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print(std::move(fmt), std::forward<Args>(args)...);
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newline();
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}
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}
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#endif // BLT_LOGGING_LOGGING_H
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