Add Folder check and Folder creation

Util/Makefile

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+../Makefile

Util/Util.cpp

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+#include "Util.h"
+#include <array>
+#include <ctime>
+#include <filesystem/path.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+namespace CameraRecorder {
+namespace Util {
+
+std::string GetDateTimeString(bool omitSeparator)
+{
+	std::array<char, 17> buffer;
+	buffer.fill(0);
+	std::time_t t = std::time(nullptr);
+	std::tm* tm = std::localtime(&t);
+
+	if (omitSeparator)
+		strftime(buffer.data(), sizeof(buffer), "%Y%m%d%H%M%S", tm);
+	else
+		strftime(buffer.data(), sizeof(buffer), "%Y%m%d-%H%M%S", tm);
+
+	return buffer.data();
+}
+
+bool FolderExists(const std::string& path)
+{
+	struct stat info;
+	if (stat(path.c_str(), &info) != 0)
+    	return false;
+	else if (info.st_mode & S_IFDIR)
+	    return true;
+	else
+	    return false;
+}
+
+void CreateFolder(const std::string& path)
+{
+	int status = mkdir(path.c_str(), 0777);
+	if ((status < 0) && (errno != EEXIST))
+		throw std::runtime_error("Can't create folder.");
+}
+
+} // namespace Util
+} // namespace CameraRecorder

Util/Util.h

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+#ifndef UTIL_UTIL_H
+#define UTIL_UTIL_H
+
+#include <string>
+
+
+namespace CameraRecorder {
+namespace Util {
+
+std::string GetDateTimeString(bool omitSeparator = false);
+
+bool FolderExists(const std::string& path);
+void CreateFolder(const std::string& path);
+
+} // namespace Util
+} // namespace CameraRecorder
+
+#endif // UTIL_UTIL_H