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// Copyright 2015 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_FILE_H_
#define _BSDIFF_FILE_H_
#include <memory>
#include "bsdiff/file_interface.h"
namespace bsdiff {
class File : public FileInterface {
public:
// Opens a file |pathname| with flags |flags| as defined by open(2). In case
// of error, an empty unique_ptr is returned and errno is set accordingly.
static std::unique_ptr<File> FOpen(const char* pathname, int flags);
~File() override;
// 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:
// Creates the File instance for the |fd|. Takes ownership of the file
// descriptor.
explicit File(int fd);
int fd_;
};
} // namespace bsdiff
#endif // _BSDIFF_FILE_H_
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