Program Listing for File log.h

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/*
 * Copyright 2017, 2018 Simon Rasmussen (refactor)
 *
 * Copyright 2015, 2016 Thomas Timm Andersen (original version)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once
#include <inttypes.h>
#include <memory>

#define URCL_LOG_DEBUG(...) urcl::log(__FILE__, __LINE__, urcl::LogLevel::DEBUG, __VA_ARGS__)
#define URCL_LOG_WARN(...) urcl::log(__FILE__, __LINE__, urcl::LogLevel::WARN, __VA_ARGS__)
#define URCL_LOG_INFO(...) urcl::log(__FILE__, __LINE__, urcl::LogLevel::INFO, __VA_ARGS__)
#define URCL_LOG_ERROR(...) urcl::log(__FILE__, __LINE__, urcl::LogLevel::ERROR, __VA_ARGS__)
#define URCL_LOG_FATAL(...) urcl::log(__FILE__, __LINE__, urcl::LogLevel::FATAL, __VA_ARGS__)

namespace urcl
{
enum class LogLevel
{
  DEBUG = 0,
  INFO,
  WARN,
  ERROR,
  FATAL,
  NONE
};

class LogHandler
{
public:
  virtual ~LogHandler() = default;
  virtual void log(const char* file, int line, LogLevel loglevel, const char* log) = 0;
};

void registerLogHandler(std::unique_ptr<LogHandler> loghandler);

void unregisterLogHandler();

void setLogLevel(LogLevel level);

void log(const char* file, int line, LogLevel level, const char* fmt, ...);

}  // namespace urcl