text: /*
  *
  *    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; either version 2 of the License, or (at
  *    your option) any later version.
  *
  *    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, write to the Free Software Foundation,
  *    Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  *    In addition, as a special exception, the author gives permission to
  *    link the code of this program with the Half-Life Game Engine ("HL
  *    Engine") and Modified Game Libraries ("MODs") developed by Valve,
  *    L.L.C ("Valve").  You must obey the GNU General Public License in all
  *    respects for all of the code used other than the HL Engine and MODs
  *    from Valve.  If you modify this file, you may extend this exception
  *    to your version of the file, but you are not obligated to do so.  If
  *    you do not wish to do so, delete this exception statement from your
  *    version.
  *
  */
  
  #include	"extdll.h"
  #include    "FileSystem.h"
  
  #include <cassert>
  
  IFileSystem *g_pFileSystem = nullptr;
  CSysModule *g_pFileSystemModule = nullptr;
  
  bool LoadFileSystem()
  {
  	// Determine which filesystem to use.
  #if defined ( _WIN32 )
  	char* szFsModule = "filesystem_stdio.dll";
  #elif defined(OSX)
  	char* szFsModule = "filesystem_stdio.dylib";
  #elif defined(LINUX)
  	char* szFsModule = "filesystem_stdio.so";
  #else
  #error
  #endif
  
  
  	char szFSDir[MAX_PATH];
  	szFSDir[0] = 0;
  #ifdef CLIENT_DLL
  	if (gEngfuncs.COM_ExpandFilename(szFsModule, szFSDir, sizeof(szFSDir)) == FALSE)
  	{
  		return false;
  	}
  #else
  	//Just use the filename for the server. No COM_ExpandFilename here.
  	strcpy(szFSDir, szFsModule);
  #endif
  
  	// Get filesystem interface.
  	g_pFileSystemModule = Sys_LoadModule(szFSDir);
  	assert(g_pFileSystemModule);
  	if (!g_pFileSystemModule)
  	{
  		return false;
  	}
  
  	CreateInterfaceFn fileSystemFactory = Sys_GetFactory(g_pFileSystemModule);
  	if (!fileSystemFactory)
  	{
  		return false;
  	}
  
  	g_pFileSystem = (IFileSystem*)fileSystemFactory(FILESYSTEM_INTERFACE_VERSION, nullptr);
  	assert(g_pFileSystem);
  	if (!g_pFileSystem)
  	{
  		return false;
  	}
  
  	return true;
  }
  
  void ShutdownFileSystem()
  {
  	if (g_pFileSystemModule)
  	{
  		Sys_UnloadModule(g_pFileSystemModule);
  		g_pFileSystemModule = nullptr;
  	}
  }
  