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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PATH_RESERVATION_TRACKER_H_ | 5 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PATH_RESERVATION_TRACKER_H_ |
6 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PATH_RESERVATION_TRACKER_H_ | 6 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PATH_RESERVATION_TRACKER_H_ |
7 | 7 |
8 #include "base/callback_forward.h" | 8 #include "base/callback_forward.h" |
9 #include "chrome/browser/download/download_target_result.h" | |
9 | 10 |
10 namespace base { | 11 namespace base { |
11 class FilePath; | 12 class FilePath; |
12 } | 13 } |
13 | 14 |
14 namespace content { | 15 namespace content { |
15 class DownloadItem; | 16 class DownloadItem; |
16 } | 17 } |
17 | 18 |
18 // Chrome attempts to uniquify filenames that are assigned to downloads in order | 19 // Chrome attempts to uniquify filenames that are assigned to downloads in order |
19 // to avoid overwriting files that already exist on the file system. Downloads | 20 // to avoid overwriting files that already exist on the file system. Downloads |
20 // that are considered potentially dangerous use random intermediate filenames. | 21 // that are considered potentially dangerous use random intermediate filenames. |
21 // Therefore only considering files that exist on the filesystem is | 22 // Therefore only considering files that exist on the filesystem is |
22 // insufficient. This class tracks files that are assigned to active downloads | 23 // insufficient. This class tracks files that are assigned to active downloads |
23 // so that uniquification can take those into account as well. | 24 // so that uniquification can take those into account as well. |
24 class DownloadPathReservationTracker { | 25 class DownloadPathReservationTracker { |
25 public: | 26 public: |
26 // Callback used with |GetReservedPath|. |target_path| specifies the target | 27 // Callback used with |GetReservedPath|. |target_path| specifies the target |
27 // path for the download. |target_path_verified| is true if all of the | 28 // path for the download. |target_path_verified| is true if all of the |
28 // following is true: | 29 // following is true: |
29 // - |requested_target_path| (passed into GetReservedPath()) was writeable. | 30 // - |requested_target_path| (passed into GetReservedPath()) was writeable. |
30 // - |target_path| was verified as being unique if uniqueness was | 31 // - |target_path| was verified as being unique if uniqueness was |
31 // required. | 32 // required. |
32 // | 33 // |
33 // If |requested_target_path| was not writeable, then the parent directory of | 34 // If |requested_target_path| was not writeable, then the parent directory of |
34 // |target_path| may be different from that of |requested_target_path|. | 35 // |target_path| may be different from that of |requested_target_path|. |
35 typedef base::Callback<void(const base::FilePath& target_path, | 36 typedef base::Callback<void(const base::FilePath& target_path, |
svaldez
2016/10/28 17:29:35
Might want to be consistent about whether the "Dow
asanka
2016/11/07 19:50:15
Yeah. I made the result be the first argument sinc
| |
36 bool target_path_verified)> ReservedPathCallback; | 37 DownloadTargetResult result)> |
38 ReservedPathCallback; | |
37 | 39 |
38 // The largest index for the uniquification suffix that we will try while | 40 // The largest index for the uniquification suffix that we will try while |
39 // attempting to come up with a unique path. | 41 // attempting to come up with a unique path. |
40 static const int kMaxUniqueFiles = 100; | 42 static const int kMaxUniqueFiles = 100; |
41 | 43 |
42 enum FilenameConflictAction { | 44 enum FilenameConflictAction { |
43 UNIQUIFY, | 45 UNIQUIFY, |
44 OVERWRITE, | 46 OVERWRITE, |
45 PROMPT, | 47 PROMPT, |
46 }; | 48 }; |
(...skipping 44 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
91 bool create_directory, | 93 bool create_directory, |
92 FilenameConflictAction conflict_action, | 94 FilenameConflictAction conflict_action, |
93 const ReservedPathCallback& callback); | 95 const ReservedPathCallback& callback); |
94 | 96 |
95 // Returns true if |path| is in use by an existing path reservation. Should | 97 // Returns true if |path| is in use by an existing path reservation. Should |
96 // only be called on the FILE thread. Currently only used by tests. | 98 // only be called on the FILE thread. Currently only used by tests. |
97 static bool IsPathInUseForTesting(const base::FilePath& path); | 99 static bool IsPathInUseForTesting(const base::FilePath& path); |
98 }; | 100 }; |
99 | 101 |
100 #endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PATH_RESERVATION_TRACKER_H_ | 102 #endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PATH_RESERVATION_TRACKER_H_ |
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