// 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, IFX_Allocator* pAllocator = NULL); | |
FX_HFILE FX_File_Open(FX_WSTR fileName, FX_DWORD dwMode, IFX_Allocator* pAllocator = NULL); | |
void FX_File_Close(FX_HFILE hFile, IFX_Allocator* pAllocator = NULL); | |
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_Allocator* pAllocator = NULL); | |
IFX_FileWrite* FX_CreateFileWrite(FX_LPCWSTR filename, IFX_Allocator* pAllocator = NULL); | |
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_Allocator* pAllocator = NULL); | |
IFX_FileRead* FX_CreateFileRead(FX_LPCWSTR filename, IFX_Allocator* pAllocator = NULL); | |
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_Allocator* pAllocator = NULL); | |
IFX_FileStream* FX_CreateFileStream(FX_LPCWSTR filename, FX_DWORD dwModes, IFX_Allocator* pAllocator = NULL); | |
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_Allocator* pAllocator = NULL); | |
IFX_MemoryStream* FX_CreateMemoryStream(FX_BOOL bConsecutive = FALSE, IFX_Allocator* pAllocator = NULL); | |
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 |