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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BASE_FILES_SCOPED_FILE_H_ | |
| 6 #define BASE_FILES_SCOPED_FILE_H_ | |
| 7 | |
| 8 #include <stdio.h> | |
| 9 | |
| 10 #include "base/base_export.h" | |
| 11 #include "base/logging.h" | |
| 12 #include "base/memory/scoped_ptr.h" | |
| 13 #include "base/scoped_generic.h" | |
| 14 #include "build/build_config.h" | |
| 15 | |
| 16 namespace base { | |
| 17 | |
| 18 namespace internal { | |
| 19 | |
| 20 #if defined(OS_POSIX) | |
| 21 struct BASE_EXPORT ScopedFDCloseTraits { | |
| 22 static int InvalidValue() { | |
| 23 return -1; | |
| 24 } | |
| 25 static void Free(int fd); | |
| 26 }; | |
| 27 #endif | |
| 28 | |
| 29 // Functor for |ScopedFILE| (below). | |
| 30 struct ScopedFILECloser { | |
| 31 inline void operator()(FILE* x) const { | |
| 32 if (x) | |
| 33 fclose(x); | |
| 34 } | |
| 35 }; | |
| 36 | |
| 37 } // namespace internal | |
| 38 | |
| 39 // ----------------------------------------------------------------------------- | |
| 40 | |
| 41 #if defined(OS_POSIX) | |
| 42 // A low-level Posix file descriptor closer class. Use this when writing | |
| 43 // platform-specific code, especially that does non-file-like things with the | |
| 44 // FD (like sockets). | |
| 45 // | |
| 46 // If you're writing low-level Windows code, see base/win/scoped_handle.h | |
| 47 // which provides some additional functionality. | |
| 48 // | |
| 49 // If you're writing cross-platform code that deals with actual files, you | |
| 50 // should generally use base::File instead which can be constructed with a | |
| 51 // handle, and in addition to handling ownership, has convenient cross-platform | |
| 52 // file manipulation functions on it. | |
| 53 typedef ScopedGeneric<int, internal::ScopedFDCloseTraits> ScopedFD; | |
| 54 #endif | |
| 55 | |
| 56 // Automatically closes |FILE*|s. | |
| 57 typedef scoped_ptr<FILE, internal::ScopedFILECloser> ScopedFILE; | |
| 58 | |
| 59 } // namespace base | |
| 60 | |
| 61 #endif // BASE_FILES_SCOPED_FILE_H_ | |
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