| // Copyright 2017 The PDFium Authors |
| // 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_FPDFAPI_PARSER_CPDF_SEEKABLEMULTISTREAM_H_ |
| #define CORE_FPDFAPI_PARSER_CPDF_SEEKABLEMULTISTREAM_H_ |
| |
| #include <vector> |
| |
| #include "core/fxcrt/fx_stream.h" |
| #include "core/fxcrt/retain_ptr.h" |
| |
| class CPDF_Stream; |
| class CPDF_StreamAcc; |
| |
| class CPDF_SeekableMultiStream final : public IFX_SeekableStream { |
| public: |
| explicit CPDF_SeekableMultiStream( |
| std::vector<RetainPtr<const CPDF_Stream>> streams); |
| ~CPDF_SeekableMultiStream() override; |
| |
| // IFX_SeekableReadStream: |
| FX_FILESIZE GetPosition() override; |
| FX_FILESIZE GetSize() override; |
| bool IsEOF() override; |
| size_t ReadBlock(pdfium::span<uint8_t> buffer) override; |
| bool ReadBlockAtOffset(pdfium::span<uint8_t> buffer, |
| FX_FILESIZE offset) override; |
| bool WriteBlockAtOffset(pdfium::span<const uint8_t> buffer, |
| FX_FILESIZE offset) override; |
| bool Flush() override; |
| |
| private: |
| std::vector<RetainPtr<CPDF_StreamAcc>> m_Data; |
| }; |
| |
| #endif // CORE_FPDFAPI_PARSER_CPDF_SEEKABLEMULTISTREAM_H_ |