// Copyright 2017 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 SRC_FILE_STREAM_H_
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#define SRC_FILE_STREAM_H_
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#include <string>
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#include <utility>
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#include "puffin/common.h"
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#include "puffin/stream.h"
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namespace puffin {
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// A very simple class for reading and writing data into a file descriptor.
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class FileStream : public StreamInterface {
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public:
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explicit FileStream(int fd) : fd_(fd) { Seek(0); }
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~FileStream() override = default;
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static UniqueStreamPtr Open(const std::string& path, bool read, bool write);
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bool GetSize(uint64_t* size) const override;
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bool GetOffset(uint64_t* offset) const override;
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bool Seek(uint64_t offset) override;
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bool Read(void* buffer, size_t length) override;
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bool Write(const void* buffer, size_t length) override;
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bool Close() override;
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protected:
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FileStream() = default;
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private:
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// The file descriptor.
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int fd_;
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DISALLOW_COPY_AND_ASSIGN(FileStream);
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};
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} // namespace puffin
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#endif // SRC_FILE_STREAM_H_
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