// Copyright 2016 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _BSDIFF_MEMORY_FILE_H_
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#define _BSDIFF_MEMORY_FILE_H_
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#include <memory>
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#include "bsdiff/file_interface.h"
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namespace bsdiff {
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class MemoryFile : public FileInterface {
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public:
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// Creates a read only MemoryFile based on the underlying |data| passed.
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// The MemoryFile will use data starting from |data| with length of |size| as
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// the file content. Write is not supported.
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MemoryFile(const uint8_t* data, size_t size);
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~MemoryFile() = default;
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// FileInterface overrides.
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bool Read(void* buf, size_t count, size_t* bytes_read) override;
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bool Write(const void* buf, size_t count, size_t* bytes_written) override;
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bool Seek(off_t pos) override;
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bool Close() override;
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bool GetSize(uint64_t* size) override;
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private:
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const uint8_t* data_ = nullptr;
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size_t size_ = 0;
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off_t offset_ = 0;
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};
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} // namespace bsdiff
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#endif // _BSDIFF_MEMORY_FILE_H_
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