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// 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_