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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 WEBKIT_BROWSER_FILEAPI_FILE_STREAM_WRITER_H_ | 5 #ifndef WEBKIT_BROWSER_FILEAPI_FILE_STREAM_WRITER_H_ |
| 6 #define WEBKIT_BROWSER_FILEAPI_FILE_STREAM_WRITER_H_ | 6 #define WEBKIT_BROWSER_FILEAPI_FILE_STREAM_WRITER_H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "net/base/completion_callback.h" | 9 #include "net/base/completion_callback.h" |
| 10 #include "webkit/browser/webkit_storage_browser_export.h" | 10 #include "webkit/browser/storage_export.h" |
| 11 | 11 |
| 12 namespace base { | 12 namespace base { |
| 13 class FilePath; | 13 class FilePath; |
| 14 class TaskRunner; | 14 class TaskRunner; |
| 15 } | 15 } |
| 16 | 16 |
| 17 namespace net { | 17 namespace net { |
| 18 class IOBuffer; | 18 class IOBuffer; |
| 19 } | 19 } |
| 20 | 20 |
| 21 namespace storage { | 21 namespace storage { |
| 22 | 22 |
| 23 // A generic interface for writing to a file-like object. | 23 // A generic interface for writing to a file-like object. |
| 24 class FileStreamWriter { | 24 class FileStreamWriter { |
| 25 public: | 25 public: |
| 26 enum OpenOrCreate { OPEN_EXISTING_FILE, CREATE_NEW_FILE }; | 26 enum OpenOrCreate { OPEN_EXISTING_FILE, CREATE_NEW_FILE }; |
| 27 | 27 |
| 28 // Creates a writer for the existing file in the path |file_path| starting | 28 // Creates a writer for the existing file in the path |file_path| starting |
| 29 // from |initial_offset|. Uses |task_runner| for async file operations. | 29 // from |initial_offset|. Uses |task_runner| for async file operations. |
| 30 WEBKIT_STORAGE_BROWSER_EXPORT static FileStreamWriter* CreateForLocalFile( | 30 STORAGE_EXPORT static FileStreamWriter* CreateForLocalFile( |
| 31 base::TaskRunner* task_runner, | 31 base::TaskRunner* task_runner, |
| 32 const base::FilePath& file_path, | 32 const base::FilePath& file_path, |
| 33 int64 initial_offset, | 33 int64 initial_offset, |
| 34 OpenOrCreate open_or_create); | 34 OpenOrCreate open_or_create); |
| 35 | 35 |
| 36 // Closes the file. If there's an in-flight operation, it is canceled (i.e., | 36 // Closes the file. If there's an in-flight operation, it is canceled (i.e., |
| 37 // the callback function associated with the operation is not called). | 37 // the callback function associated with the operation is not called). |
| 38 virtual ~FileStreamWriter() {} | 38 virtual ~FileStreamWriter() {} |
| 39 | 39 |
| 40 // Writes to the current cursor position asynchronously. | 40 // Writes to the current cursor position asynchronously. |
| (...skipping 37 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 78 // is returned, and the callback will be run on the thread where Flush() was | 78 // is returned, and the callback will be run on the thread where Flush() was |
| 79 // called when the flush has completed. | 79 // called when the flush has completed. |
| 80 // | 80 // |
| 81 // It is invalid to call Flush while there is an in-flight async operation. | 81 // It is invalid to call Flush while there is an in-flight async operation. |
| 82 virtual int Flush(const net::CompletionCallback& callback) = 0; | 82 virtual int Flush(const net::CompletionCallback& callback) = 0; |
| 83 }; | 83 }; |
| 84 | 84 |
| 85 } // namespace storage | 85 } // namespace storage |
| 86 | 86 |
| 87 #endif // WEBKIT_BROWSER_FILEAPI_FILE_STREAM_WRITER_H_ | 87 #endif // WEBKIT_BROWSER_FILEAPI_FILE_STREAM_WRITER_H_ |
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