Add bootloader extension

device/extensions/bootloader/platform/logging.cpp

@@ -0,0 +1,57 @@
+#include "icsneo/device/extensions/bootloader/platform/logging.h"
+
+#include <cstdlib>
+#include <iostream>
+
+namespace icsneo {
+
+namespace Bootloader {
+
+namespace Log {
+
+// Set ICS_BOOTLOADER_LOG_LEVEL to 1 (error) through 5 (trace) to enable logging to stderr
+static int GetLogLevel() {
+	static const int level = [] {
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable: 4996) // getenv
+#endif
+		const char* env = std::getenv("ICS_BOOTLOADER_LOG_LEVEL");
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+		return env ? std::atoi(env) : 0;
+	}();
+	return level;
+}
+
+static void Write(int level, const char* prefix, const std::string& subject, const std::string& msg) {
+	if(GetLogLevel() >= level)
+		std::cerr << prefix << subject << " - " << msg << std::endl;
+}
+
+void Trace(const std::string& subject, const std::string& msg) {
+	Write(5, "[TRACE] ", subject, msg);
+}
+
+void Debug(const std::string& subject, const std::string& msg) {
+	Write(4, "[DEBUG] ", subject, msg);
+}
+
+void Info(const std::string& subject, const std::string& msg) {
+	Write(3, "[INFO] ", subject, msg);
+}
+
+void Warning(const std::string& subject, const std::string& msg) {
+	Write(2, "[WARN] ", subject, msg);
+}
+
+void Error(const std::string& subject, const std::string& msg) {
+	Write(1, "[ERROR] ", subject, msg);
+}
+
+} // namespace Log
+
+} // namespace Bootloader
+
+} // namespace icsneo