Brendan LE GLAUNEC
157 lines
3.7 KiB
C++
157 lines
3.7 KiB
C++
//
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// Copyright(c) 2015 Gabi Melman.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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//
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#pragma once
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#include <type_traits>
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#include "../common.h"
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#include "../logger.h"
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// Line logger class - aggregates operator<< calls to fast ostream
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// and logs upon destruction
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namespace spdlog {
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namespace details {
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class line_logger {
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public:
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line_logger(logger* callback_logger, level::level_enum msg_level, bool enabled)
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: _callback_logger(callback_logger), _log_msg(msg_level), _enabled(enabled) {}
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// No copy intended. Only move
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line_logger(const line_logger& other) = delete;
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line_logger& operator=(const line_logger&) = delete;
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line_logger& operator=(line_logger&&) = delete;
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line_logger(line_logger&& other)
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: _callback_logger(other._callback_logger)
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, _log_msg(std::move(other._log_msg))
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, _enabled(other._enabled) {
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other.disable();
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}
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// Log the log message using the callback logger
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~line_logger() {
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if (_enabled) {
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#ifndef SPDLOG_NO_NAME
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_log_msg.logger_name = _callback_logger->name();
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#endif
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#ifndef SPDLOG_NO_DATETIME
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_log_msg.time = os::now();
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#endif
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#ifndef SPDLOG_NO_THREAD_ID
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_log_msg.thread_id = os::thread_id();
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#endif
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_callback_logger->_log_msg(_log_msg);
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}
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}
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//
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// Support for format string with variadic args
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//
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void
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write(const char* what) {
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if (_enabled) _log_msg.raw << what;
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}
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template <typename... Args>
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void
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write(const char* fmt, const Args&... args) {
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if (!_enabled) return;
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try {
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_log_msg.raw.write(fmt, args...);
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} catch (const fmt::FormatError& e) {
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throw spdlog_ex(fmt::format(
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"formatting error while processing format string '{}': {}", fmt, e.what()));
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}
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}
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//
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// Support for operator<<
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//
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line_logger& operator<<(const char* what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(const std::string& what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(int what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(unsigned int what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(long what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(unsigned long what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(long long what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(unsigned long long what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(double what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(long double what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(float what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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line_logger& operator<<(char what) {
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if (_enabled) _log_msg.raw << what;
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return *this;
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}
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// Support user types which implements operator<<
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template <typename T>
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line_logger& operator<<(const T& what) {
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if (_enabled) _log_msg.raw.write("{}", what);
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return *this;
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}
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void
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disable() {
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_enabled = false;
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}
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bool
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is_enabled() const {
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return _enabled;
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}
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private:
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logger* _callback_logger;
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log_msg _log_msg;
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bool _enabled;
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};
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} // Namespace details
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} // Namespace spdlog
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