| // 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_ |