| // 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 _FX_STREAM | |
| #define _FX_STREAM | |
| class IFX_Stream; | |
| IFX_FileRead* FX_CreateFileRead(IFX_Stream* pBaseStream, | |
| FX_BOOL bReleaseStream = FALSE); | |
| IFX_FileRead* FX_CreateFileRead(IFX_BufferRead* pBufferRead, | |
| FX_FILESIZE iFileSize = -1, | |
| FX_BOOL bReleaseStream = TRUE); | |
| IFX_FileWrite* FX_CreateFileWrite(IFX_Stream* pBaseStream, | |
| FX_BOOL bReleaseStream = FALSE); | |
| enum FX_STREAMACCESS { | |
| FX_STREAMACCESS_Binary = 0x00, | |
| FX_STREAMACCESS_Text = 0x01, | |
| FX_STREAMACCESS_Read = 0x02, | |
| FX_STREAMACCESS_Write = 0x04, | |
| FX_STREAMACCESS_Truncate = 0x10, | |
| FX_STREAMACCESS_Append = 0x20, | |
| FX_STREAMACCESS_Create = 0x80, | |
| }; | |
| enum FX_STREAMSEEK { | |
| FX_STREAMSEEK_Begin = 0, | |
| FX_STREAMSEEK_Current, | |
| FX_STREAMSEEK_End, | |
| }; | |
| class IFX_Stream { | |
| public: | |
| static IFX_Stream* CreateStream(IFX_FileRead* pFileRead, FX_DWORD dwAccess); | |
| static IFX_Stream* CreateStream(IFX_FileWrite* pFileWrite, FX_DWORD dwAccess); | |
| static IFX_Stream* CreateStream(const FX_WCHAR* pszFileName, | |
| FX_DWORD dwAccess); | |
| static IFX_Stream* CreateStream(uint8_t* pData, | |
| int32_t length, | |
| FX_DWORD dwAccess); | |
| static IFX_Stream* CreateStream(IFX_BufferRead* pBufferRead, | |
| FX_DWORD dwAccess, | |
| int32_t iFileSize = -1, | |
| FX_BOOL bReleaseBufferRead = TRUE); | |
| static IFX_Stream* CreateTextStream(IFX_Stream* pBaseStream, | |
| FX_BOOL bDeleteOnRelease); | |
| virtual ~IFX_Stream() {} | |
| virtual void Release() = 0; | |
| virtual IFX_Stream* Retain() = 0; | |
| virtual FX_DWORD GetAccessModes() const = 0; | |
| virtual int32_t GetLength() const = 0; | |
| virtual int32_t Seek(FX_STREAMSEEK eSeek, int32_t iOffset) = 0; | |
| virtual int32_t GetPosition() = 0; | |
| virtual FX_BOOL IsEOF() const = 0; | |
| virtual int32_t ReadData(uint8_t* pBuffer, int32_t iBufferSize) = 0; | |
| virtual int32_t ReadString(FX_WCHAR* pStr, | |
| int32_t iMaxLength, | |
| FX_BOOL& bEOS, | |
| int32_t const* pByteSize = NULL) = 0; | |
| virtual int32_t WriteData(const uint8_t* pBuffer, int32_t iBufferSize) = 0; | |
| virtual int32_t WriteString(const FX_WCHAR* pStr, int32_t iLength) = 0; | |
| virtual void Flush() = 0; | |
| virtual FX_BOOL SetLength(int32_t iLength) = 0; | |
| virtual int32_t GetBOM(uint8_t bom[4]) const = 0; | |
| virtual FX_WORD GetCodePage() const = 0; | |
| virtual FX_WORD SetCodePage(FX_WORD wCodePage) = 0; | |
| virtual void Lock() = 0; | |
| virtual void Unlock() = 0; | |
| virtual IFX_Stream* CreateSharedStream(FX_DWORD dwAccess, | |
| int32_t iOffset, | |
| int32_t iLength) = 0; | |
| }; | |
| #endif |