| //===- llvm/Support/FileUtilities.h - File System Utilities -----*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by the LLVM research group and is distributed under |
| // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines a family of utility functions which are useful for doing |
| // various things with files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_SUPPORT_FILEUTILITIES_H |
| #define LLVM_SUPPORT_FILEUTILITIES_H |
| |
| #include "llvm/System/Path.h" |
| |
| namespace llvm { |
| |
| /// DiffFilesWithTolerance - Compare the two files specified, returning 0 if |
| /// the files match, 1 if they are different, and 2 if there is a file error. |
| /// This function allows you to specify an absolete and relative FP error that |
| /// is allowed to exist. If you specify a string to fill in for the error |
| /// option, it will set the string to an error message if an error occurs, or |
| /// if the files are different. |
| /// |
| int DiffFilesWithTolerance(const sys::PathWithStatus &FileA, |
| const sys::PathWithStatus &FileB, |
| double AbsTol, double RelTol, |
| std::string *Error = 0); |
| |
| |
| /// FileRemover - This class is a simple object meant to be stack allocated. |
| /// If an exception is thrown from a region, the object removes the filename |
| /// specified (if deleteIt is true). |
| /// |
| class FileRemover { |
| sys::Path Filename; |
| bool DeleteIt; |
| public: |
| explicit FileRemover(const sys::Path &filename, bool deleteIt = true) |
| : Filename(filename), DeleteIt(deleteIt) {} |
| |
| ~FileRemover() { |
| if (DeleteIt) { |
| // Ignore problems deleting the file. |
| Filename.eraseFromDisk(); |
| } |
| } |
| |
| /// releaseFile - Take ownership of the file away from the FileRemover so it |
| /// will not be removed when the object is destroyed. |
| void releaseFile() { DeleteIt = false; } |
| }; |
| } // End llvm namespace |
| |
| #endif |