// 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_H_ #define _FX_STREAM_H_ #ifndef _FX_MEMORY_H_ #include "fx_memory.h" #endif void* FX_OpenFolder(FX_LPCSTR path); void* FX_OpenFolder(FX_LPCWSTR path); FX_BOOL FX_GetNextFile(void* handle, CFX_ByteString& filename, FX_BOOL& bFolder); FX_BOOL FX_GetNextFile(void* handle, CFX_WideString& filename, FX_BOOL& bFolder); void FX_CloseFolder(void* handle); FX_WCHAR FX_GetFolderSeparator(); FX_DEFINEHANDLE(FX_HFILE) #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ #define FX_FILESIZE FX_INT32 #else #include <fcntl.h> #include <unistd.h> #include <sys/stat.h> #ifndef O_BINARY #define O_BINARY 0 #endif #ifndef O_LARGEFILE #define O_LARGEFILE 0 #endif #define FX_FILESIZE off_t #endif #define FX_GETBYTEOFFSET32(a) 0 #define FX_GETBYTEOFFSET40(a) 0 #define FX_GETBYTEOFFSET48(a) 0 #define FX_GETBYTEOFFSET56(a) 0 #define FX_GETBYTEOFFSET24(a) ((FX_BYTE)(a>>24)) #define FX_GETBYTEOFFSET16(a) ((FX_BYTE)(a>>16)) #define FX_GETBYTEOFFSET8(a) ((FX_BYTE)(a>>8)) #define FX_GETBYTEOFFSET0(a) ((FX_BYTE)(a)) #define FX_FILEMODE_Write 0 #define FX_FILEMODE_ReadOnly 1 #define FX_FILEMODE_Truncate 2 FX_HFILE FX_File_Open(FX_BSTR fileName, FX_DWORD dwMode); FX_HFILE FX_File_Open(FX_WSTR fileName, FX_DWORD dwMode); void FX_File_Close(FX_HFILE hFile); FX_FILESIZE FX_File_GetSize(FX_HFILE hFile); FX_FILESIZE FX_File_GetPosition(FX_HFILE hFile); FX_FILESIZE FX_File_SetPosition(FX_HFILE hFile, FX_FILESIZE pos); size_t FX_File_Read(FX_HFILE hFile, void* pBuffer, size_t szBuffer); size_t FX_File_ReadPos(FX_HFILE hFile, void* pBuffer, size_t szBuffer, FX_FILESIZE pos); size_t FX_File_Write(FX_HFILE hFile, const void* pBuffer, size_t szBuffer); size_t FX_File_WritePos(FX_HFILE hFile, const void* pBuffer, size_t szBuffer, FX_FILESIZE pos); FX_BOOL FX_File_Flush(FX_HFILE hFile); FX_BOOL FX_File_Truncate(FX_HFILE hFile, FX_FILESIZE szFile); FX_BOOL FX_File_Exist(FX_BSTR fileName); FX_BOOL FX_File_Exist(FX_WSTR fileName); FX_BOOL FX_File_Delete(FX_BSTR fileName); FX_BOOL FX_File_Delete(FX_WSTR fileName); FX_BOOL FX_File_Copy(FX_BSTR fileNameSrc, FX_BSTR fileNameDst); FX_BOOL FX_File_Copy(FX_WSTR fileNameSrc, FX_WSTR fileNameDst); FX_BOOL FX_File_Move(FX_BSTR fileNameSrc, FX_BSTR fileNameDst); FX_BOOL FX_File_Move(FX_WSTR fileNameSrc, FX_WSTR fileNameDst); class IFX_StreamWrite { public: virtual void Release() = 0; virtual FX_BOOL WriteBlock(const void* pData, size_t size) = 0; }; class IFX_FileWrite : public IFX_StreamWrite { public: virtual void Release() = 0; virtual FX_FILESIZE GetSize() = 0; virtual FX_BOOL Flush() = 0; virtual FX_BOOL WriteBlock(const void* pData, FX_FILESIZE offset, size_t size) = 0; virtual FX_BOOL WriteBlock(const void* pData, size_t size) { return WriteBlock(pData, GetSize(), size); } }; IFX_FileWrite* FX_CreateFileWrite(FX_LPCSTR filename); IFX_FileWrite* FX_CreateFileWrite(FX_LPCWSTR filename); class IFX_StreamRead { public: virtual void Release() = 0; virtual FX_BOOL IsEOF() = 0; virtual FX_FILESIZE GetPosition() = 0; virtual size_t ReadBlock(void* buffer, size_t size) = 0; }; class IFX_FileRead : IFX_StreamRead { public: virtual void Release() = 0; virtual FX_FILESIZE GetSize() = 0; virtual FX_BOOL IsEOF() { return FALSE; } virtual FX_FILESIZE GetPosition() { return 0; } virtual FX_BOOL SetRange(FX_FILESIZE offset, FX_FILESIZE size) { return FALSE; } virtual void ClearRange() {} virtual FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) = 0; virtual size_t ReadBlock(void* buffer, size_t size) { return 0; } }; IFX_FileRead* FX_CreateFileRead(FX_LPCSTR filename); IFX_FileRead* FX_CreateFileRead(FX_LPCWSTR filename); class IFX_FileStream : public IFX_FileRead, public IFX_FileWrite { public: virtual IFX_FileStream* Retain() = 0; virtual void Release() = 0; virtual FX_FILESIZE GetSize() = 0; virtual FX_BOOL IsEOF() = 0; virtual FX_FILESIZE GetPosition() = 0; virtual FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) = 0; virtual size_t ReadBlock(void* buffer, size_t size) = 0; virtual FX_BOOL WriteBlock(const void* buffer, FX_FILESIZE offset, size_t size) = 0; virtual FX_BOOL WriteBlock(const void* buffer, size_t size) { return WriteBlock(buffer, GetSize(), size); } virtual FX_BOOL Flush() = 0; }; IFX_FileStream* FX_CreateFileStream(FX_LPCSTR filename, FX_DWORD dwModes); IFX_FileStream* FX_CreateFileStream(FX_LPCWSTR filename, FX_DWORD dwModes); class IFX_MemoryStream : public IFX_FileStream { public: virtual FX_BOOL IsConsecutive() const = 0; virtual void EstimateSize(size_t nInitSize, size_t nGrowSize) = 0; virtual FX_LPBYTE GetBuffer() const = 0; virtual void AttachBuffer(FX_LPBYTE pBuffer, size_t nSize, FX_BOOL bTakeOver = FALSE) = 0; virtual void DetachBuffer() = 0; }; IFX_MemoryStream* FX_CreateMemoryStream(FX_LPBYTE pBuffer, size_t nSize, FX_BOOL bTakeOver = FALSE); IFX_MemoryStream* FX_CreateMemoryStream(FX_BOOL bConsecutive = FALSE); class IFX_BufferRead : public IFX_StreamRead { public: virtual void Release() = 0; virtual FX_BOOL IsEOF() = 0; virtual FX_FILESIZE GetPosition() = 0; virtual size_t ReadBlock(void* buffer, size_t size) = 0; virtual FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) = 0; virtual FX_LPCBYTE GetBlockBuffer() = 0; virtual size_t GetBlockSize() = 0; virtual FX_FILESIZE GetBlockOffset() = 0; }; #endif