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#pragma once
#include <string>
#include <vector>
#include <memory>
#include <windows.h>
struct ILogSink
{
virtual ~ILogSink() = 0
{
}
virtual void log(const std::wstring &message) = 0;
};
class VoidLogSink : public ILogSink
{
public:
void log(const std::wstring &message) override {}
};
class Utf8FileLogSink : public ILogSink
{
public:
Utf8FileLogSink(const std::wstring &file, bool append = true, bool flush = false);
~Utf8FileLogSink();
Utf8FileLogSink(const Utf8FileLogSink &) = delete;
Utf8FileLogSink &operator=(const Utf8FileLogSink &) = delete;
void log(const std::wstring &message) override;
private:
HANDLE m_logfile = INVALID_HANDLE_VALUE;
bool m_flush;
};
class Logger
{
public:
Logger(std::unique_ptr<ILogSink> &&logsink)
: m_logsink(std::move(logsink))
{
}
Logger(const Logger &) = delete;
Logger &operator=(const Logger &) = delete;
void log(const std::wstring &message);
void log(const std::wstring &message, const std::vector<std::wstring> &details);
private:
std::unique_ptr<ILogSink> m_logsink;
static std::wstring Timestamp();
static std::wstring Compose(const std::wstring &message, const std::wstring ×tamp,
size_t indentation = 0);
};
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