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30 lines
1.1 KiB
C++
30 lines
1.1 KiB
C++
//===--- FileSystem.h - Extra helpers for manipulating files ----*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_BASIC_FILESYSTEM_H
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#define SWIFT_BASIC_FILESYSTEM_H
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#include "llvm/ADT/Twine.h"
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#include <system_error>
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namespace swift {
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/// Moves a file from \p source to \p destination, unless there is already
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/// a file at \p destination that contains the same data as \p source.
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///
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/// In the latter case, the file at \p source is deleted. If an error occurs,
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/// the file at \p source will still be present at \p source.
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std::error_code moveFileIfDifferent(const llvm::Twine &source,
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const llvm::Twine &destination);
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}
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#endif
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