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	discussion of this change. Boy are my fingers tired. ;-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			60 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			60 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
//===- llvm/Support/FileUtilities.h - File System Utilities -----*- C++ -*-===//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/System/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 absolete 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(const sys::PathWithStatus &FileA, 
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                             const sys::PathWithStatus &FileB,
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                             double AbsTol, double RelTol,
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                             std::string *Error = 0);
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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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    sys::Path Filename;
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    bool DeleteIt;
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  public:
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    explicit FileRemover(const sys::Path &filename, bool deleteIt = true)
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      : Filename(filename), DeleteIt(deleteIt) {}
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    ~FileRemover() {
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      if (DeleteIt) {
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        // Ignore problems deleting the file.
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        Filename.eraseFromDisk();
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      }
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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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