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// Copyright (C) 2020 Joel Rosdahl and other contributors
//
// See doc/AUTHORS.adoc for a complete list of contributors.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// 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 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
#pragma once
#include "system.hpp"
#include "FormatNonstdStringView.hpp"
#include "third_party/fmt/core.h"
#include "third_party/fmt/format.h"
#include "third_party/nonstd/optional.hpp"
#include "third_party/nonstd/string_view.hpp"
#include <string>
#include <utility>
// Log a raw message (plus a newline character).
#define LOG_RAW(message_) \
do { \
if (Logging::enabled()) { \
Logging::log(nonstd::string_view(message_)); \
} \
} while (false)
// Log a message (plus a newline character) described by a format string with at
// least one placeholder. `format` is compile-time checked if CMAKE_CXX_STANDARD
// >= 14.
#define LOG(format_, ...) LOG_RAW(fmt::format(FMT_STRING(format_), __VA_ARGS__))
// Log a message (plus a newline character) described by a format string with at
// least one placeholder without flushing and with a reused timestamp. `format`
// is compile-time checked if CMAKE_CXX_STANDARD >= 14.
#define BULK_LOG(format_, ...) \
do { \
if (Logging::enabled()) { \
Logging::bulk_log(fmt::format(FMT_STRING(format_), __VA_ARGS__)); \
} \
} while (false)
class Config;
namespace Logging {
// Initialize global logging state. Must be called once before using the other
// logging functions.
void init(const Config& config);
// Return whether logging is enabled to at least one destination.
bool enabled();
// Log `message` (plus a newline character).
void log(nonstd::string_view message);
// Log `message` (plus a newline character) without flushing and with a reused
// timestamp.
void bulk_log(nonstd::string_view message);
// Write the current log memory buffer `path`.
void dump_log(const std::string& path);
} // namespace Logging
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