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