The GtkRadiant sources as originally released under the GPL license.

libs/os/dir.h

@@ -0,0 +1,75 @@
+/*
+Copyright (C) 2001-2006, William Joseph.
+All Rights Reserved.
+
+This file is part of GtkRadiant.
+
+GtkRadiant 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; either version 2 of the License, or
+(at your option) any later version.
+
+GtkRadiant 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 GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#if !defined(INCLUDED_OS_DIR_H)
+#define INCLUDED_OS_DIR_H
+
+/// \file
+/// \brief OS directory-listing object.
+
+#include <glib/gdir.h>
+
+typedef GDir Directory;
+
+inline bool directory_good(Directory* directory)
+{
+  return directory != 0;
+}
+
+inline Directory* directory_open(const char* name)
+{
+  return g_dir_open(name, 0, 0);
+}
+
+inline void directory_close(Directory* directory)
+{
+  g_dir_close(directory);
+}
+
+inline const char* directory_read_and_increment(Directory* directory)
+{
+  return g_dir_read_name(directory);
+}
+
+template<typename Functor>
+void Directory_forEach(const char* path, const Functor& functor)
+{
+  Directory* dir = directory_open(path);
+
+  if(directory_good(dir))
+  {
+    for(;;)
+    {
+      const char* name = directory_read_and_increment(dir);
+      if(name == 0)
+      {
+        break;
+      }
+
+      functor(name);
+    }
+
+    directory_close(dir);
+  }
+}
+
+
+#endif