/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/include/llvm/Support/FileUtilities.h
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1 | | //===- llvm/Support/FileUtilities.h - File System Utilities -----*- C++ -*-===// |
2 | | // |
3 | | // The LLVM Compiler Infrastructure |
4 | | // |
5 | | // This file is distributed under the University of Illinois Open Source |
6 | | // License. See LICENSE.TXT for details. |
7 | | // |
8 | | //===----------------------------------------------------------------------===// |
9 | | // |
10 | | // This file defines a family of utility functions which are useful for doing |
11 | | // various things with files. |
12 | | // |
13 | | //===----------------------------------------------------------------------===// |
14 | | |
15 | | #ifndef LLVM_SUPPORT_FILEUTILITIES_H |
16 | | #define LLVM_SUPPORT_FILEUTILITIES_H |
17 | | |
18 | | #include "llvm/Support/FileSystem.h" |
19 | | #include "llvm/Support/Path.h" |
20 | | |
21 | | namespace llvm { |
22 | | |
23 | | /// DiffFilesWithTolerance - Compare the two files specified, returning 0 if |
24 | | /// the files match, 1 if they are different, and 2 if there is a file error. |
25 | | /// This function allows you to specify an absolute and relative FP error that |
26 | | /// is allowed to exist. If you specify a string to fill in for the error |
27 | | /// option, it will set the string to an error message if an error occurs, or |
28 | | /// if the files are different. |
29 | | /// |
30 | | int DiffFilesWithTolerance(StringRef FileA, |
31 | | StringRef FileB, |
32 | | double AbsTol, double RelTol, |
33 | | std::string *Error = nullptr); |
34 | | |
35 | | |
36 | | /// FileRemover - This class is a simple object meant to be stack allocated. |
37 | | /// If an exception is thrown from a region, the object removes the filename |
38 | | /// specified (if deleteIt is true). |
39 | | /// |
40 | | class FileRemover { |
41 | | SmallString<128> Filename; |
42 | | bool DeleteIt; |
43 | | public: |
44 | 0 | FileRemover() : DeleteIt(false) {} |
45 | | |
46 | | explicit FileRemover(const Twine& filename, bool deleteIt = true) |
47 | 31 | : DeleteIt(deleteIt) { |
48 | 31 | filename.toVector(Filename); |
49 | 31 | } |
50 | | |
51 | 1.51k | ~FileRemover() { |
52 | 1.51k | if (DeleteIt1.51k ) { |
53 | 1.51k | // Ignore problems deleting the file. |
54 | 1.51k | sys::fs::remove(Filename); |
55 | 1.51k | } |
56 | 1.51k | } |
57 | | |
58 | | /// setFile - Give ownership of the file to the FileRemover so it will |
59 | | /// be removed when the object is destroyed. If the FileRemover already |
60 | | /// had ownership of a file, remove it first. |
61 | | void setFile(const Twine& filename, bool deleteIt = true) { |
62 | | if (DeleteIt) { |
63 | | // Ignore problems deleting the file. |
64 | | sys::fs::remove(Filename); |
65 | | } |
66 | | |
67 | | Filename.clear(); |
68 | | filename.toVector(Filename); |
69 | | DeleteIt = deleteIt; |
70 | | } |
71 | | |
72 | | /// releaseFile - Take ownership of the file away from the FileRemover so it |
73 | | /// will not be removed when the object is destroyed. |
74 | 0 | void releaseFile() { DeleteIt = false; } |
75 | | }; |
76 | | } // End llvm namespace |
77 | | |
78 | | #endif |