| // 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 CORE_FXCRT_CFX_MEMORYSTREAM_H_ |
| #define CORE_FXCRT_CFX_MEMORYSTREAM_H_ |
| |
| #include <memory> |
| |
| #include "core/fxcrt/fx_memory.h" |
| #include "core/fxcrt/fx_stream.h" |
| #include "core/fxcrt/retain_ptr.h" |
| |
| class CFX_MemoryStream final : public IFX_SeekableStream { |
| public: |
| template <typename T, typename... Args> |
| friend RetainPtr<T> pdfium::MakeRetain(Args&&... args); |
| |
| // IFX_SeekableStream |
| FX_FILESIZE GetSize() override; |
| FX_FILESIZE GetPosition() override; |
| bool IsEOF() override; |
| bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override; |
| size_t ReadBlock(void* buffer, size_t size) override; |
| bool WriteBlock(const void* buffer, FX_FILESIZE offset, size_t size) override; |
| bool Flush() override; |
| |
| const uint8_t* GetBuffer() const { return m_data.get(); } |
| |
| private: |
| CFX_MemoryStream(); |
| CFX_MemoryStream(std::unique_ptr<uint8_t, FxFreeDeleter> pBuffer, |
| size_t nSize); |
| ~CFX_MemoryStream() override; |
| |
| std::unique_ptr<uint8_t, FxFreeDeleter> m_data; |
| size_t m_nTotalSize; |
| size_t m_nCurSize; |
| size_t m_nCurPos = 0; |
| }; |
| |
| #endif // CORE_FXCRT_CFX_MEMORYSTREAM_H_ |