// Copyright 2017 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_CFGAS_STREAM_H_ #define XFA_FGAS_CRT_CFGAS_STREAM_H_ #include <algorithm> #include "core/fxcrt/cfx_retain_ptr.h" #include "core/fxcrt/fx_stream.h" #include "core/fxcrt/fx_system.h" class CFGAS_Stream : public CFX_Retainable { public: enum class Pos { Begin = 0, Current, }; template <typename T, typename... Args> friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args); FX_FILESIZE GetLength() const { return m_pStream->GetSize(); } FX_FILESIZE GetPosition() { return m_iPosition; } FX_STRSIZE GetBOMLength() const { return std::max(0, m_wBOMLength); } bool IsEOF() const { return m_iPosition >= GetLength(); } void Seek(CFGAS_Stream::Pos eSeek, FX_FILESIZE iOffset); FX_STRSIZE ReadString(wchar_t* pStr, FX_STRSIZE iMaxLength, bool* bEOS); void WriteString(const CFX_WideStringC& str); uint16_t GetCodePage() const { return m_wCodePage; } void SetCodePage(uint16_t wCodePage); private: CFGAS_Stream(const CFX_RetainPtr<IFX_SeekableStream>& stream, bool isWriteSteam); CFGAS_Stream(uint8_t* data, FX_STRSIZE size); ~CFGAS_Stream() override; FX_STRSIZE ReadData(uint8_t* pBuffer, FX_STRSIZE iBufferSize); uint16_t m_wCodePage; FX_STRSIZE m_wBOMLength; bool m_IsWriteStream; FX_FILESIZE m_iPosition; CFX_RetainPtr<IFX_SeekableStream> m_pStream; }; #endif // XFA_FGAS_CRT_CFGAS_STREAM_H_