AppUtils::Logger Class Reference

Manages application logging based on command-line arguments. More...

#include <logger.hpp>

Collaboration diagram for AppUtils::Logger:

Public Member Functions
	Logger (const CmdLine::CmdLineArgs &in_args)
	Initialises the logger and installs the custom message handler. More...
	~Logger ()
	Restores the original message handler and cleans up logging resources, such as closing the log file. More...
	Logger (const Logger &)=delete
Logger &	operator= (const Logger &)=delete
	Logger (Logger &&)=delete
Logger &	operator= (Logger &&)=delete

Static Private Member Functions
static void	messageHandler (QtMsgType type, const QMessageLogContext &context, const QString &msg)
	The static Qt message handler that intercepts all log messages. More...

Private Attributes
const CmdLine::CmdLineArgs &	args_
	A reference to the parsed command-line arguments. More...
QSet< QtMsgType >	activeLevels_
	The set of Qt message types to be logged. More...
QHash< QtMsgType, QString >	levelPrefixes_
	A map from message type to its string prefix (e.g., “[debug]”). More...
std::unique_ptr< QFile >	logFile_
	A smart pointer to the log file. More...
std::unique_ptr< QTextStream >	logStream_
	A smart pointer to the text stream for writing to the log file. More...
QtMessageHandler	oldHandler_ = nullptr
	Stores the original Qt message handler to be restored on exit. More...

Static Private Attributes
static Logger *	instance_ = nullptr
	Singleton instance of the logger. More...

Detailed Description

Manages application logging based on command-line arguments.

Definition at line 36 of file logger.hpp.

Constructor & Destructor Documentation

Logger()

AppUtils::Logger::Logger ( const CmdLine::CmdLineArgs &  in_args )

inlineexplicit

Initialises the logger and installs the custom message handler.

Parameters

in_args

The parsed command-line arguments.

Definition at line 44 of file logger.hpp.

~Logger()

AppUtils::Logger::~Logger ( )

inline

Restores the original message handler and cleans up logging resources, such as closing the log file.

Definition at line 91 of file logger.hpp.

Member Function Documentation

messageHandler()

static void AppUtils::Logger::messageHandler ( QtMsgType  type, const QMessageLogContext &  context, const QString &  msg  )

inlinestaticprivate

The static Qt message handler that intercepts all log messages.

This function filters messages based on the current log level and routes them to the configured outputs (console, file, syslog).

Parameters

type	The level of the message (e.g., QtDebugMsg).
context	The context where the message was generated.
msg	The log message.

Definition at line 123 of file logger.hpp.

Member Data Documentation

activeLevels_

QSet<QtMsgType> AppUtils::Logger::activeLevels_

private

The set of Qt message types to be logged.

Definition at line 156 of file logger.hpp.

args_

const CmdLine::CmdLineArgs& AppUtils::Logger::args_

private

A reference to the parsed command-line arguments.

Definition at line 153 of file logger.hpp.

instance_

Logger* AppUtils::Logger::instance_ = nullptr

inlinestaticprivate

Singleton instance of the logger.

Definition at line 150 of file logger.hpp.

levelPrefixes_

QHash<QtMsgType, QString> AppUtils::Logger::levelPrefixes_

private

A map from message type to its string prefix (e.g., “[debug]”).

Definition at line 162 of file logger.hpp.

logFile_

std::unique_ptr<QFile> AppUtils::Logger::logFile_

private

A smart pointer to the log file.

Definition at line 165 of file logger.hpp.

logStream_

std::unique_ptr<QTextStream> AppUtils::Logger::logStream_

private

A smart pointer to the text stream for writing to the log file.

Definition at line 171 of file logger.hpp.

oldHandler_

QtMessageHandler AppUtils::Logger::oldHandler_ = nullptr

private

Stores the original Qt message handler to be restored on exit.

Definition at line 177 of file logger.hpp.

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The documentation for this class was generated from the following file:

• logger.hpp