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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
//===- llvm/Support/FileUtilities.h - File System Utilities -----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a family of utility functions which are useful for doing
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// various things with files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_FILEUTILITIES_H
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#define LLVM_SUPPORT_FILEUTILITIES_H
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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namespace llvm {
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/// DiffFilesWithTolerance - Compare the two files specified, returning 0 if
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/// the files match, 1 if they are different, and 2 if there is a file error.
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/// This function allows you to specify an absolute and relative FP error that
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/// is allowed to exist. If you specify a string to fill in for the error
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/// option, it will set the string to an error message if an error occurs, or
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/// if the files are different.
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///
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int DiffFilesWithTolerance(StringRef FileA,
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StringRef FileB,
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double AbsTol, double RelTol,
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std::string *Error = nullptr);
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/// FileRemover - This class is a simple object meant to be stack allocated.
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/// If an exception is thrown from a region, the object removes the filename
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/// specified (if deleteIt is true).
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///
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class FileRemover {
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SmallString<128> Filename;
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bool DeleteIt;
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public:
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FileRemover() : DeleteIt(false) {}
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explicit FileRemover(const Twine& filename, bool deleteIt = true)
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: DeleteIt(deleteIt) {
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filename.toVector(Filename);
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}
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~FileRemover() {
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if (DeleteIt) {
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// Ignore problems deleting the file.
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sys::fs::remove(Filename);
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}
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}
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/// setFile - Give ownership of the file to the FileRemover so it will
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/// be removed when the object is destroyed. If the FileRemover already
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/// had ownership of a file, remove it first.
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void setFile(const Twine& filename, bool deleteIt = true) {
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if (DeleteIt) {
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// Ignore problems deleting the file.
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sys::fs::remove(Filename);
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}
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Filename.clear();
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filename.toVector(Filename);
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DeleteIt = deleteIt;
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}
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/// releaseFile - Take ownership of the file away from the FileRemover so it
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/// will not be removed when the object is destroyed.
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void releaseFile() { DeleteIt = false; }
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};
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} // End llvm namespace
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#endif
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