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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_FILE_STREAM_READER_
H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_FILE_STREAM_READER_
H_ |
| 6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_FILE_STREAM_READER_
H_ | 6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_FILE_STREAM_READER_
H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | 8 #include <stdint.h> |
| 9 |
| 9 #include "base/files/file_path.h" | 10 #include "base/files/file_path.h" |
| 11 #include "base/macros.h" |
| 10 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
| 11 #include "base/memory/scoped_ptr.h" | 13 #include "base/memory/scoped_ptr.h" |
| 12 #include "base/memory/weak_ptr.h" | 14 #include "base/memory/weak_ptr.h" |
| 13 #include "storage/browser/fileapi/file_stream_reader.h" | 15 #include "storage/browser/fileapi/file_stream_reader.h" |
| 14 #include "storage/browser/fileapi/file_system_url.h" | 16 #include "storage/browser/fileapi/file_system_url.h" |
| 15 | 17 |
| 16 namespace chromeos { | 18 namespace chromeos { |
| 17 namespace file_system_provider { | 19 namespace file_system_provider { |
| 18 | 20 |
| 19 struct EntryMetadata; | 21 struct EntryMetadata; |
| 20 class ProvidedFileSystemInterface; | 22 class ProvidedFileSystemInterface; |
| 21 | 23 |
| 22 // Implements a streamed file reader. It is lazily initialized by the first call | 24 // Implements a streamed file reader. It is lazily initialized by the first call |
| 23 // to Read(). | 25 // to Read(). |
| 24 class FileStreamReader : public storage::FileStreamReader { | 26 class FileStreamReader : public storage::FileStreamReader { |
| 25 public: | 27 public: |
| 26 typedef base::Callback< | 28 typedef base::Callback< |
| 27 void(base::WeakPtr<ProvidedFileSystemInterface> file_system, | 29 void(base::WeakPtr<ProvidedFileSystemInterface> file_system, |
| 28 const base::FilePath& file_path, | 30 const base::FilePath& file_path, |
| 29 int file_handle, | 31 int file_handle, |
| 30 base::File::Error result)> OpenFileCompletedCallback; | 32 base::File::Error result)> OpenFileCompletedCallback; |
| 31 | 33 |
| 32 FileStreamReader(storage::FileSystemContext* context, | 34 FileStreamReader(storage::FileSystemContext* context, |
| 33 const storage::FileSystemURL& url, | 35 const storage::FileSystemURL& url, |
| 34 int64 initial_offset, | 36 int64_t initial_offset, |
| 35 const base::Time& expected_modification_time); | 37 const base::Time& expected_modification_time); |
| 36 | 38 |
| 37 ~FileStreamReader() override; | 39 ~FileStreamReader() override; |
| 38 | 40 |
| 39 // storage::FileStreamReader overrides. | 41 // storage::FileStreamReader overrides. |
| 40 int Read(net::IOBuffer* buf, | 42 int Read(net::IOBuffer* buf, |
| 41 int buf_len, | 43 int buf_len, |
| 42 const net::CompletionCallback& callback) override; | 44 const net::CompletionCallback& callback) override; |
| 43 int64 GetLength(const net::Int64CompletionCallback& callback) override; | 45 int64_t GetLength(const net::Int64CompletionCallback& callback) override; |
| 44 | 46 |
| 45 private: | 47 private: |
| 46 // Helper class for executing operations on the provided file system. All | 48 // Helper class for executing operations on the provided file system. All |
| 47 // of its methods must be called on UI thread. Callbacks are called on IO | 49 // of its methods must be called on UI thread. Callbacks are called on IO |
| 48 // thread. | 50 // thread. |
| 49 class OperationRunner; | 51 class OperationRunner; |
| 50 | 52 |
| 51 // State of the file stream reader. | 53 // State of the file stream reader. |
| 52 enum State { NOT_INITIALIZED, INITIALIZING, INITIALIZED, FAILED }; | 54 enum State { NOT_INITIALIZED, INITIALIZING, INITIALIZED, FAILED }; |
| 53 | 55 |
| (...skipping 36 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 90 | 92 |
| 91 // Same as Read(), but called after initializing is completed. | 93 // Same as Read(), but called after initializing is completed. |
| 92 void ReadAfterInitialized(scoped_refptr<net::IOBuffer> buffer, | 94 void ReadAfterInitialized(scoped_refptr<net::IOBuffer> buffer, |
| 93 int buffer_length, | 95 int buffer_length, |
| 94 const net::CompletionCallback& callback); | 96 const net::CompletionCallback& callback); |
| 95 | 97 |
| 96 // Same as GetLength(), but called after initializing is completed. | 98 // Same as GetLength(), but called after initializing is completed. |
| 97 void GetLengthAfterInitialized(const net::Int64CompletionCallback& callback); | 99 void GetLengthAfterInitialized(const net::Int64CompletionCallback& callback); |
| 98 | 100 |
| 99 storage::FileSystemURL url_; | 101 storage::FileSystemURL url_; |
| 100 int64 current_offset_; | 102 int64_t current_offset_; |
| 101 int64 current_length_; | 103 int64_t current_length_; |
| 102 base::Time expected_modification_time_; | 104 base::Time expected_modification_time_; |
| 103 scoped_refptr<OperationRunner> runner_; | 105 scoped_refptr<OperationRunner> runner_; |
| 104 State state_; | 106 State state_; |
| 105 | 107 |
| 106 base::WeakPtrFactory<FileStreamReader> weak_ptr_factory_; | 108 base::WeakPtrFactory<FileStreamReader> weak_ptr_factory_; |
| 107 DISALLOW_COPY_AND_ASSIGN(FileStreamReader); | 109 DISALLOW_COPY_AND_ASSIGN(FileStreamReader); |
| 108 }; | 110 }; |
| 109 | 111 |
| 110 } // namespace file_system_provider | 112 } // namespace file_system_provider |
| 111 } // namespace chromeos | 113 } // namespace chromeos |
| 112 | 114 |
| 113 #endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_FILE_STREAM_READ
ER_H_ | 115 #endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_FILE_STREAM_READ
ER_H_ |
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