--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Logger.h	Sun Nov 26 16:27:50 2023 +0100
@@ -0,0 +1,58 @@
+/**
+ * ShaderShark
+ * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <ostream>
+#include <string>
+
+#define LOG_LEVEL(XX) \
+	XX(OFF, 0, "OFF") \
+	XX(SEVERE, 1, "SEVERE") \
+	XX(WARNING, 2, "WARNING") \
+	XX(INFO, 3, "INFO") \
+	XX(CONFIG, 4, "CONFIG") \
+	XX(FINE, 5, "FINE") \
+	XX(FINER, 6, "FINER") \
+	XX(FINEST, 7, "FINEST") \
+	XX(ALL, 8, "ALL")
+
+enum class LogLevel {
+#define XX(a, b, c) a = (1 << b),
+	LOG_LEVEL(XX)
+#undef XX
+};
+
+static const char* LOG_LEVELS[] = {
+#define XX(a, b, c) [b] = c,
+	LOG_LEVEL(XX)
+#undef XX
+};
+
+#undef LOG_LEVEL
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+inline const char* getLogLevelName(LogLevel l) {
+	auto count = ARRAY_SIZE(LOG_LEVELS);
+	for (int i = 0; i < count; i++) if ((int) l == 1 << i) return LOG_LEVELS[i];
+	return nullptr;
+}
+
+inline void log(std::ostream& out, LogLevel level, std::string message) {
+	out << getLogLevelName(level) << ": " << message << std::endl;
+}