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42 lines
1.1 KiB
42 lines
1.1 KiB
// 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_SINK_FILE_H_
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#define _BSDIFF_SINK_FILE_H_
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#include <stdint.h>
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#include <functional>
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#include "bsdiff/file_interface.h"
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using sink_func = std::function<size_t(const uint8_t*, size_t)>;
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namespace bsdiff {
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class SinkFile : public FileInterface {
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public:
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// Creates a SinkFile based on the underlying |sink| function passed.
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// The SinkFile will call |sink| function upon write.
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// Read, Seek and GetSize are not supported.
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explicit SinkFile(const sink_func& sink);
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~SinkFile() = 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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// The sink() function used to write data.
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const sink_func sink_;
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};
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} // namespace bsdiff
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#endif // _BSDIFF_SINK_FILE_H_
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