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// 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_FX_STREAM_H_
#define CORE_FXCRT_FX_STREAM_H_
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
#include <direct.h>
class CFindFileDataA;
typedef CFindFileDataA FX_FileHandle;
#define FX_FILESIZE int32_t
#else
#include <dirent.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#ifndef O_BINARY
#define O_BINARY 0
#endif // O_BINARY
#ifndef O_LARGEFILE
#define O_LARGEFILE 0
#endif // O_LARGEFILE
typedef DIR FX_FileHandle;
#define FX_FILESIZE off_t
#endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
FX_FileHandle* FX_OpenFolder(const FX_CHAR* path);
bool FX_GetNextFile(FX_FileHandle* handle,
CFX_ByteString* filename,
bool* bFolder);
void FX_CloseFolder(FX_FileHandle* handle);
FX_WCHAR FX_GetFolderSeparator();
#define FX_GETBYTEOFFSET32(a) 0
#define FX_GETBYTEOFFSET40(a) 0
#define FX_GETBYTEOFFSET48(a) 0
#define FX_GETBYTEOFFSET56(a) 0
#define FX_GETBYTEOFFSET24(a) ((uint8_t)(a >> 24))
#define FX_GETBYTEOFFSET16(a) ((uint8_t)(a >> 16))
#define FX_GETBYTEOFFSET8(a) ((uint8_t)(a >> 8))
#define FX_GETBYTEOFFSET0(a) ((uint8_t)(a))
#define FX_FILEMODE_Write 0
#define FX_FILEMODE_ReadOnly 1
#define FX_FILEMODE_Truncate 2
class IFX_WriteStream {
public:
virtual ~IFX_WriteStream() {}
virtual void Release() = 0;
virtual bool WriteBlock(const void* pData, size_t size) = 0;
};
class IFX_ReadStream {
public:
virtual ~IFX_ReadStream() {}
virtual void Release() = 0;
virtual bool IsEOF() = 0;
virtual FX_FILESIZE GetPosition() = 0;
virtual size_t ReadBlock(void* buffer, size_t size) = 0;
};
class IFX_SeekableWriteStream : public IFX_WriteStream {
public:
// IFX_WriteStream:
bool WriteBlock(const void* pData, size_t size) override;
virtual FX_FILESIZE GetSize() = 0;
virtual bool Flush() = 0;
virtual bool WriteBlock(const void* pData,
FX_FILESIZE offset,
size_t size) = 0;
};
class IFX_SeekableReadStream : public IFX_ReadStream {
public:
// IFX_ReadStream:
void Release() override = 0;
bool IsEOF() override;
FX_FILESIZE GetPosition() override;
size_t ReadBlock(void* buffer, size_t size) override;
virtual bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) = 0;
virtual FX_FILESIZE GetSize() = 0;
};
IFX_SeekableReadStream* FX_CreateFileRead(const FX_CHAR* filename);
IFX_SeekableReadStream* FX_CreateFileRead(const FX_WCHAR* filename);
class IFX_SeekableStream : public IFX_SeekableReadStream,
public IFX_SeekableWriteStream {
public:
virtual IFX_SeekableStream* Retain() = 0;
// IFX_SeekableReadStream:
void Release() override = 0;
bool IsEOF() override = 0;
FX_FILESIZE GetPosition() override = 0;
size_t ReadBlock(void* buffer, size_t size) override = 0;
bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override = 0;
FX_FILESIZE GetSize() override = 0;
// IFX_SeekableWriteStream:
bool WriteBlock(const void* buffer,
FX_FILESIZE offset,
size_t size) override = 0;
bool WriteBlock(const void* buffer, size_t size) override;
bool Flush() override = 0;
};
IFX_SeekableStream* FX_CreateFileStream(const FX_CHAR* filename,
uint32_t dwModes);
IFX_SeekableStream* FX_CreateFileStream(const FX_WCHAR* filename,
uint32_t dwModes);
#ifdef PDF_ENABLE_XFA
class IFX_FileAccess {
public:
virtual ~IFX_FileAccess() {}
virtual void Release() = 0;
virtual IFX_FileAccess* Retain() = 0;
virtual void GetPath(CFX_WideString& wsPath) = 0;
virtual IFX_SeekableStream* CreateFileStream(uint32_t dwModes) = 0;
};
IFX_FileAccess* FX_CreateDefaultFileAccess(const CFX_WideStringC& wsPath);
#endif // PDF_ENABLE_XFA
class IFX_MemoryStream : public IFX_SeekableStream {
public:
virtual bool IsConsecutive() const = 0;
virtual void EstimateSize(size_t nInitSize, size_t nGrowSize) = 0;
virtual uint8_t* GetBuffer() const = 0;
virtual void AttachBuffer(uint8_t* pBuffer,
size_t nSize,
bool bTakeOver = FALSE) = 0;
virtual void DetachBuffer() = 0;
};
IFX_MemoryStream* FX_CreateMemoryStream(uint8_t* pBuffer,
size_t nSize,
bool bTakeOver = FALSE);
IFX_MemoryStream* FX_CreateMemoryStream(bool bConsecutive = FALSE);
class IFX_BufferRead : public IFX_ReadStream {
public:
// IFX_ReadStream:
void Release() override = 0;
bool IsEOF() override = 0;
FX_FILESIZE GetPosition() override = 0;
size_t ReadBlock(void* buffer, size_t size) override = 0;
virtual bool ReadNextBlock(bool bRestart = FALSE) = 0;
virtual const uint8_t* GetBlockBuffer() = 0;
virtual size_t GetBlockSize() = 0;
virtual FX_FILESIZE GetBlockOffset() = 0;
};
#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
class CFindFileData {
public:
virtual ~CFindFileData() {}
HANDLE m_Handle;
bool m_bEnd;
};
class CFindFileDataA : public CFindFileData {
public:
~CFindFileDataA() override {}
WIN32_FIND_DATAA m_FindData;
};
class CFindFileDataW : public CFindFileData {
public:
~CFindFileDataW() override {}
WIN32_FIND_DATAW m_FindData;
};
#endif
#endif // CORE_FXCRT_FX_STREAM_H_
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