spdlog/include/spdlog/details/log_msg_buffer.h

69 lines
1.8 KiB
C++

// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
#pragma once
#include "spdlog/details/log_msg.h"
#include "spdlog/fmt/fmt.h"
namespace spdlog {
namespace details {
// extend log_msg with internal buffer to store its payload.
// this is needed since log_msg holds string_views that points to stack data.
class log_msg_buffer : public log_msg
{
memory_buf_t buffer;
void update_string_views()
{
logger_name = string_view_t{buffer.data(), logger_name.size()};
payload = string_view_t{logger_name.end(), payload.size()};
}
public:
log_msg_buffer() = default;
explicit log_msg_buffer(const log_msg &orig_msg)
: log_msg{orig_msg}
{
buffer.append(logger_name.begin(), logger_name.end());
buffer.append(payload.begin(), payload.end());
update_string_views();
}
log_msg_buffer(const log_msg_buffer &other)
: log_msg{other}
{
buffer.append(logger_name.begin(), logger_name.end());
buffer.append(payload.begin(), payload.end());
update_string_views();
}
log_msg_buffer(log_msg_buffer &&other)
: log_msg{std::move(other)}
, buffer{std::move(other.buffer)}
{
update_string_views();
}
log_msg_buffer &operator=(log_msg_buffer &other)
{
log_msg::operator=(other);
buffer.append(other.buffer.begin(), other.buffer.end());
update_string_views();
return *this;
}
log_msg_buffer &operator=(log_msg_buffer &&other)
{
log_msg::operator=(std::move(other));
buffer = std::move(other.buffer);
update_string_views();
return *this;
}
};
} // namespace details
} // namespace spdlog