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