1 files changed, 51 insertions, 0 deletions
diff --git a/engine/saverestore_filesystem.h b/engine/saverestore_filesystem.h
new file mode 100644
index 0000000..9ae6d39
--- /dev/null
+++ b/engine/saverestore_filesystem.h
@@ -0,0 +1,51 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Interface for filesystem calls used by the saverestore system
+//			to manupulate the save directory.
+//
+//=============================================================================//
+#ifndef SAVERESTOREFILESYSTEM_H 
+#define SAVERESTOREFILESYSTEM_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "utlmap.h"
+#include "utlsymbol.h"
+#include "filesystem.h"
+
+abstract_class ISaveRestoreFileSystem
+{
+public:
+	virtual FileHandle_t	Open( const char *pFileName, const char *pOptions, const char *pathID = NULL ) = 0;
+	virtual void			Close( FileHandle_t ) = 0;
+	virtual int				Read( void *pOutput, int size, FileHandle_t file ) = 0;
+	virtual int				Write( void const* pInput, int size, FileHandle_t file ) = 0;
+	virtual void			Seek( FileHandle_t file, int pos, FileSystemSeek_t method ) = 0;
+	virtual unsigned int	Tell( FileHandle_t file ) = 0;
+	virtual unsigned int	Size( FileHandle_t file ) = 0;
+	virtual unsigned int	Size( const char *pFileName, const char *pPathID = NULL ) = 0;
+
+	virtual bool			FileExists( const char *pFileName, const char *pPathID = NULL ) = 0;
+	virtual void			RenameFile( char const *pOldPath, char const *pNewPath, const char *pathID = NULL ) = 0;
+	virtual void			RemoveFile( char const* pRelativePath, const char *pathID = NULL ) = 0;
+
+	virtual void			AsyncFinishAllWrites( void ) = 0;
+	virtual void			AsyncRelease( FSAsyncControl_t hControl ) = 0;
+	virtual FSAsyncStatus_t	AsyncWrite( const char *pFileName, const void *pSrc, int nSrcBytes, bool bFreeMemory, bool bAppend, FSAsyncControl_t *pControl = NULL ) = 0;
+	virtual FSAsyncStatus_t	AsyncFinish( FSAsyncControl_t hControl, bool wait = false ) = 0;
+	virtual FSAsyncStatus_t	AsyncAppend( const char *pFileName, const void *pSrc, int nSrcBytes, bool bFreeMemory, FSAsyncControl_t *pControl = NULL ) = 0;
+	virtual FSAsyncStatus_t	AsyncAppendFile( const char *pDestFileName, const char *pSrcFileName, FSAsyncControl_t *pControl = NULL ) = 0;
+
+	virtual void			DirectoryCopy( const char *pPath, const char *pDestFileName, bool bIsXSave ) = 0;
+	virtual	bool			DirectoryExtract( FileHandle_t pFile, int fileCount, bool bIsXSave ) = 0;
+	virtual int				DirectoryCount( const char *pPath ) = 0;
+	virtual void			DirectoryClear( const char *pPath, bool bIsXSave ) = 0;
+
+	virtual void			AuditFiles( void ) = 0;
+	virtual bool			LoadFileFromDisk( const char *pFilename ) = 0;
+};
+
+extern ISaveRestoreFileSystem *g_pSaveRestoreFileSystem;
+
+#endif // SAVERESTOREFILESYSTEM_H