savepoint, changelog later..

include/crlib/cr-logger.h

@@ -0,0 +1,98 @@
+//
+// Yet Another POD-Bot, based on PODBot by Markus Klinge ("CountFloyd").
+// Copyright (c) YaPB Development Team.
+//
+// This software is licensed under the BSD-style license.
+// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
+//     https://yapb.ru/license
+//
+
+#pragma once
+
+#include <time.h>
+
+#include <crlib/cr-files.h>
+#include <crlib/cr-lambda.h>
+
+#if defined (CR_WINDOWS)
+#  define WIN32_LEAN_AND_MEAN 
+#  include <windows.h>
+#endif
+
+CR_NAMESPACE_BEGIN
+
+class SimpleLogger final : public Singleton <SimpleLogger> {
+public:
+   using PrintFunction = Lambda <void (const char *)>;
+
+private:
+   File m_handle;
+   PrintFunction m_printer;
+
+public:
+   SimpleLogger () = default;
+
+   ~SimpleLogger () {
+      m_handle.close ();
+   }
+
+private:
+   void logToFile (const char *level, const char *msg) {
+      if (!m_handle) {
+         return;
+      }
+      time_t ticks = time (&ticks);
+      auto tm = localtime (&ticks);
+
+      auto timebuf = strings.chars ();
+      strftime (timebuf, StringBuffer::StaticBufferSize, "%Y-%m-%d %H:%M:%S", tm);
+
+      m_handle.puts ("%s (%s): %s\n", timebuf, level, msg);
+   }
+
+public:
+   template <typename ...Args> void fatal (const char *fmt, Args ...args) {
+      auto msg = strings.format (fmt, cr::forward <Args> (args)...);
+
+      logToFile ("FATAL", msg);
+
+      if (m_printer) {
+         m_printer (msg);
+      }
+      plat.abort (msg);
+   }
+
+   template <typename ...Args> void error (const char *fmt, Args ...args) {
+      auto msg = strings.format (fmt, cr::forward <Args> (args)...);
+
+      logToFile ("ERROR", msg);
+
+      if (m_printer) {
+         m_printer (msg);
+      }
+   }
+
+   template <typename ...Args> void message (const char *fmt, Args ...args) {
+      auto msg = strings.format (fmt, cr::forward <Args> (args)...);
+
+      logToFile ("INFO", msg);
+
+      if (m_printer) {
+         m_printer (msg);
+      }
+   }
+
+public:
+   void initialize (const String &filename, PrintFunction printFunction) {
+      if (m_handle) {
+         m_handle.close ();
+      }
+      m_printer = cr::move (printFunction);
+      m_handle.open (filename, "at");
+   }
+};
+
+// expose global instance
+static auto &logger = SimpleLogger::get ();
+
+CR_NAMESPACE_END