1 files changed, 63 insertions, 0 deletions
diff --git a/include/log.h b/include/log.h
new file mode 100644
index 0000000..f6f7193
--- /dev/null
+++ b/include/log.h
@@ -0,0 +1,63 @@
+#ifndef LOG_H
+#define LOG_H
+#include <string>
+#include <cstddef>
+
+namespace nitrokey {
+namespace log {
+
+enum class Loglevel : int {
+	DEBUG_L2,
+	DEBUG,
+	INFO,
+	WARNING,
+	ERROR
+};
+
+class LogHandler {
+public:
+	virtual void print(const std::string &, Loglevel lvl) = 0;
+
+protected:
+	std::string loglevel_to_str(Loglevel);
+};
+
+class StdlogHandler : public LogHandler {
+public:
+	virtual void print(const std::string &, Loglevel lvl);
+};
+
+extern StdlogHandler stdlog_handler;
+
+class Log {
+public:
+	Log()
+	: mp_loghandler(&stdlog_handler), m_loglevel(Loglevel::WARNING) {}
+
+	static Log &instance() {
+		if (mp_instance == NULL)
+			mp_instance = new Log;
+		return *mp_instance;
+	}
+
+	void operator()(const std::string &, Loglevel);
+
+	void set_loglevel(Loglevel lvl) {
+		m_loglevel = lvl;
+	}
+
+	void set_handler(LogHandler *handler) {
+		mp_loghandler = handler;
+	}
+
+private:
+	Loglevel m_loglevel;
+	LogHandler *mp_loghandler;
+
+	static Log *mp_instance;
+};
+
+}
+}
+
+#endif