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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 XFA_FGAS_CRT_IFGAS_STREAM_H_
#define XFA_FGAS_CRT_IFGAS_STREAM_H_
#include "core/fxcrt/cfx_retain_ptr.h"
#include "core/fxcrt/fx_stream.h"
#include "core/fxcrt/fx_system.h"
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 IFGAS_Stream : public CFX_Retainable {
public:
static CFX_RetainPtr<IFGAS_Stream> CreateStream(
const CFX_RetainPtr<IFX_SeekableReadStream>& pFileRead,
uint32_t dwAccess);
static CFX_RetainPtr<IFGAS_Stream> CreateStream(
const CFX_RetainPtr<IFX_SeekableWriteStream>& pFileWrite,
uint32_t dwAccess);
static CFX_RetainPtr<IFGAS_Stream> CreateStream(uint8_t* pData,
int32_t length,
uint32_t dwAccess);
static CFX_RetainPtr<IFGAS_Stream> CreateTextStream(
const CFX_RetainPtr<IFGAS_Stream>& pBaseStream);
virtual uint32_t 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 bool IsEOF() const = 0;
virtual int32_t ReadData(uint8_t* pBuffer, int32_t iBufferSize) = 0;
virtual int32_t ReadString(wchar_t* pStr, int32_t iMaxLength, bool& bEOS) = 0;
virtual int32_t WriteData(const uint8_t* pBuffer, int32_t iBufferSize) = 0;
virtual int32_t WriteString(const wchar_t* pStr, int32_t iLength) = 0;
virtual void Flush() = 0;
virtual bool SetLength(int32_t iLength) = 0;
virtual int32_t GetBOM(uint8_t bom[4]) const = 0;
virtual uint16_t GetCodePage() const = 0;
virtual uint16_t SetCodePage(uint16_t wCodePage) = 0;
CFX_RetainPtr<IFX_SeekableReadStream> MakeSeekableReadStream();
};
#endif // XFA_FGAS_CRT_IFGAS_STREAM_H_
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