filesystem: introduce new module, based on engine filesystem.

The goal is to share filesystem code between engine and utilities and provide C++ VFileSystem interface in the future
2026-08-10 14:12:04 +08:00 · 2022-07-28 18:56:02 +03:00
parent 12ea6dcfd7
commit 5e4fc64430
35 changed files with 3102 additions and 2279 deletions
@@ -0,0 +1,146 @@
+ /*
+filesystem.c - game filesystem based on DP fs
+Copyright (C) 2007 Uncle Mike
+
+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 3 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.
+*/
+
+#include "common.h"
+#include "library.h"
+
+fs_api_t g_fsapi;
+fs_globals_t *FI;
+
+static HINSTANCE fs_hInstance;
+
+static void FS_Rescan_f( void )
+{
+	FS_Rescan();
+}
+
+static void FS_ClearPaths_f( void )
+{
+	FS_ClearSearchPath();
+}
+
+static void FS_Path_f_( void )
+{
+	FS_Path_f();
+}
+
+static fs_interface_t fs_memfuncs =
+{
+	Con_Printf,
+	Con_DPrintf,
+	Con_Reportf,
+	Sys_Error,
+
+	_Mem_AllocPool,
+	_Mem_FreePool,
+	_Mem_Alloc,
+	_Mem_Realloc,
+	_Mem_Free,
+};
+
+static void FS_UnloadProgs( void )
+{
+	COM_FreeLibrary( fs_hInstance );
+	fs_hInstance = 0;
+}
+
+qboolean FS_LoadProgs( const char *name )
+{
+	FSAPI GetFSAPI;
+
+	fs_hInstance = COM_LoadLibrary( name, false, true );
+
+	if( !fs_hInstance )
+	{
+		Host_Error( "FS_LoadProgs: can't load filesystem library %s: %s\n", name, COM_GetLibraryError() );
+		return false;
+	}
+
+	if( !( GetFSAPI = (FSAPI)COM_GetProcAddress( fs_hInstance, GET_FS_API )))
+	{
+		FS_UnloadProgs();
+		Host_Error( "FS_LoadProgs: can't find GetFSAPI entry point in %s\n", name );
+		return false;
+	}
+
+	if( !GetFSAPI( FS_API_VERSION, &g_fsapi, &FI, &fs_memfuncs ))
+	{
+		FS_UnloadProgs();
+		Host_Error( "FS_LoadProgs: can't initialize filesystem API: wrong version\n" );
+		return false;
+	}
+
+	Con_DPrintf( "FS_LoadProgs: filesystem_stdio successfully loaded\n" );
+
+	return true;
+}
+
+/*
+================
+FS_Init
+================
+*/
+void FS_Init( void )
+{
+	qboolean		hasBaseDir = false;
+	qboolean		hasGameDir = false;
+	qboolean		caseinsensitive = true;
+	int		i;
+	string gamedir;
+
+	Cmd_AddRestrictedCommand( "fs_rescan", FS_Rescan_f, "rescan filesystem search pathes" );
+	Cmd_AddRestrictedCommand( "fs_path", FS_Path_f_, "show filesystem search pathes" );
+	Cmd_AddRestrictedCommand( "fs_clearpaths", FS_ClearPaths_f, "clear filesystem search pathes" );
+
+#if !XASH_WIN32
+	if( Sys_CheckParm( "-casesensitive" ) )
+		caseinsensitive = false;
+#endif
+
+	if( !Sys_GetParmFromCmdLine( "-game", gamedir ))
+		Q_strncpy( gamedir, SI.basedirName, sizeof( gamedir )); // gamedir == basedir
+
+	if( !FS_InitStdio( caseinsensitive, host.rootdir, SI.basedirName, gamedir, host.rodir ))
+	{
+		Host_Error( "Can't init filesystem_stdio!\n" );
+		return;
+	}
+
+	if( !Sys_GetParmFromCmdLine( "-dll", SI.gamedll ))
+		SI.gamedll[0] = 0;
+
+	if( !Sys_GetParmFromCmdLine( "-clientlib", SI.clientlib ))
+		SI.clientlib[0] = 0;
+}
+
+/*
+================
+FS_Shutdown
+================
+*/
+void FS_Shutdown( void )
+{
+	int	i;
+
+	FS_ShutdownStdio();
+
+	memset( &SI, 0, sizeof( sysinfo_t ));
+
+	FS_UnloadProgs();
+}
+
+
+
+