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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_STREAMSEEK {
FX_STREAMSEEK_Begin = 0,
FX_STREAMSEEK_Current,
};
class IFGAS_Stream : public CFX_Retainable {
public:
static CFX_RetainPtr<IFGAS_Stream> CreateReadStream(
const CFX_RetainPtr<IFX_SeekableStream>& pFileRead);
static CFX_RetainPtr<IFGAS_Stream> CreateWriteStream(
const CFX_RetainPtr<IFX_SeekableStream>& pFileWrite);
static CFX_RetainPtr<IFGAS_Stream> CreateWideStringReadStream(
const CFX_WideString& buffer);
virtual FX_FILESIZE GetLength() const = 0;
virtual FX_FILESIZE GetPosition() = 0;
virtual FX_STRSIZE GetBOMLength() const = 0;
virtual void Seek(FX_STREAMSEEK eSeek, FX_FILESIZE iOffset) = 0;
virtual FX_STRSIZE ReadString(wchar_t* pStr,
FX_STRSIZE iMaxLength,
bool* bEOS) = 0;
virtual void WriteString(const CFX_WideStringC& str) = 0;
virtual uint16_t GetCodePage() const = 0;
virtual void SetCodePage(uint16_t wCodePage) = 0;
protected:
virtual bool IsEOF() const = 0;
};
#endif // XFA_FGAS_CRT_IFGAS_STREAM_H_
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