buslogstream.h

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/*
* Copyright 2025 Ingemar Hedvall
* SPDX-License-Identifier: MIT
*/

 
#pragma once
 
#include <cstdint>
#include <string_view>
#include <string>
#include <atomic>
#include <sstream>
#include <source_location>
#include <functional>
 
 
namespace bus {

enum class BusLogSeverity : uint8_t {
  kTrace = 0,      
  kDebug = 1,      
  kInfo = 2,       
  kNotice = 3,     
  kWarning = 4,    
  kError = 5,      
  kCritical = 6,   
  kAlert = 7,      
  kEmergency = 8   
};

static std::string_view BusLogServerityToText(BusLogSeverity severity);

#define BUS_TRACE() BusLogStream(std::source_location::current(), BusLogSeverity::kTrace)

#define BUS_DEBUG() BusLogStream(std::source_location::current(), BusLogSeverity::kDebug)

#define BUS_INFO() BusLogStream(std::source_location::current(), BusLogSeverity::kInfo)

#define BUS_NOTICE() BusLogStream(std::source_location::current(), BusLogSeverity::kNotice)

#define BUS_WARNING() BusLogStream(std::source_location::current(), BusLogSeverity::kWarning)

#define BUS_ERROR() BusLogStream(std::source_location::current(), BusLogSeverity::kError)

#define BUS_CRITICAL() BusLogStream(std::source_location::current(), BusLogSeverity::kCritical)

#define BUS_ALERT() BusLogStream(std::source_location::current(), BusLogSeverity::kAlert)

#define BUS_EMERGENCY() BusLogStream(std::source_location::current(), BusLogSeverity::kEmergency)

class BusLogStream : public std::ostringstream {
public:
  BusLogStream() = delete;
BusLogStream(std::source_location location, BusLogSeverity severity);
  ~BusLogStream() override;

  static std::function<void(const std::source_location& location,
                         BusLogSeverity severity,
                         const std::string& text)> UserLogFunction;

  static uint64_t ErrorCount() { return error_count_; }

  static void ResetErrorCount() { error_count_ = 0;}

  static void BusConsoleLogFunction(const std::source_location& location,
    BusLogSeverity severity, const std::string& text);
  static void BusNoLogFunction(const std::source_location& location,
    BusLogSeverity severity, const std::string& text);
private:
  BusLogSeverity severity_;
  std::source_location location_;
  static std::atomic<uint64_t> error_count_;
 
  static void LogString(const std::source_location& location,
                        BusLogSeverity severity,
                        const std::string& text);
};
 
} // bus