// Copyright 2014 PDFium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com #ifndef CORE_FXCRT_EXTENSION_H_ #define CORE_FXCRT_EXTENSION_H_ #include <algorithm> #include <memory> #include "core/fxcrt/fx_basic.h" #include "core/fxcrt/fx_safe_types.h" class IFXCRT_FileAccess { public: static IFXCRT_FileAccess* Create(); virtual ~IFXCRT_FileAccess() {} virtual bool Open(const CFX_ByteStringC& fileName, uint32_t dwMode) = 0; virtual bool Open(const CFX_WideStringC& fileName, uint32_t dwMode) = 0; virtual void Close() = 0; virtual FX_FILESIZE GetSize() const = 0; virtual FX_FILESIZE GetPosition() const = 0; virtual FX_FILESIZE SetPosition(FX_FILESIZE pos) = 0; virtual size_t Read(void* pBuffer, size_t szBuffer) = 0; virtual size_t Write(const void* pBuffer, size_t szBuffer) = 0; virtual size_t ReadPos(void* pBuffer, size_t szBuffer, FX_FILESIZE pos) = 0; virtual size_t WritePos(const void* pBuffer, size_t szBuffer, FX_FILESIZE pos) = 0; virtual bool Flush() = 0; virtual bool Truncate(FX_FILESIZE szFile) = 0; }; #ifdef __cplusplus extern "C" { #endif #define MT_N 848 #define MT_M 456 #define MT_Matrix_A 0x9908b0df #define MT_Upper_Mask 0x80000000 #define MT_Lower_Mask 0x7fffffff struct FX_MTRANDOMCONTEXT { FX_MTRANDOMCONTEXT() { mti = MT_N + 1; bHaveSeed = false; } uint32_t mti; bool bHaveSeed; uint32_t mt[MT_N]; }; #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ bool FX_GenerateCryptoRandom(uint32_t* pBuffer, int32_t iCount); #endif #ifdef __cplusplus } #endif #endif // CORE_FXCRT_EXTENSION_H_