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#pragma once
class cLogger
{
public:
enum eLogLevel
{
llRegular,
llInfo,
llWarning,
llError,
};
class cListener
{
public:
virtual void Log(AString a_Message, eLogLevel a_LogLevel) = 0;
virtual ~cListener(){}
};
class cAttachment
{
public:
cAttachment() : m_listener(nullptr) {}
cAttachment(cAttachment && a_other)
: m_listener(a_other.m_listener)
{
a_other.m_listener = nullptr;
}
~cAttachment()
{
if (m_listener != nullptr)
{
cLogger::GetInstance().DetachListener(m_listener);
}
}
cAttachment & operator=(cAttachment && a_other)
{
m_listener = a_other.m_listener;
a_other.m_listener = nullptr;
return *this;
}
private:
cListener * m_listener;
friend class cLogger;
cAttachment(cListener * a_listener) : m_listener(a_listener) {}
};
/** Log a message formatted with a printf style formatting string. */
void LogPrintf(const char * a_Format, eLogLevel a_LogLevel, fmt::ArgList a_ArgList);
FMT_VARIADIC(void, LogPrintf, const char *, eLogLevel)
/** Log a message formatted with a python style formatting string. */
void LogFormat(const char * a_Format, eLogLevel a_LogLevel, fmt::ArgList a_ArgList);
FMT_VARIADIC(void, LogFormat, const char *, eLogLevel)
/** Logs the simple text message at the specified log level. */
void LogSimple(AString a_Message, eLogLevel a_LogLevel = llRegular);
cAttachment AttachListener(std::unique_ptr<cListener> a_Listener);
static cLogger & GetInstance(void);
// Must be called before calling GetInstance in a multithreaded context
static void InitiateMultithreading();
private:
cCriticalSection m_CriticalSection;
std::vector<std::unique_ptr<cListener>> m_LogListeners;
void DetachListener(cListener * a_Listener);
};
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