| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef STORAGE_BROWSER_BLOB_LOCAL_FILE_STREAM_READER_H_ |
| #define STORAGE_BROWSER_BLOB_LOCAL_FILE_STREAM_READER_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| |
| #include "base/compiler_specific.h" |
| #include "base/files/file.h" |
| #include "base/files/file_path.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "storage/browser/fileapi/file_stream_reader.h" |
| #include "storage/browser/storage_browser_export.h" |
| |
| namespace base { |
| class TaskRunner; |
| } |
| |
| namespace content { |
| class LocalFileStreamReaderTest; |
| } |
| |
| namespace net { |
| class FileStream; |
| } |
| |
| namespace storage { |
| |
| // A thin wrapper of net::FileStream with range support for sliced file |
| // handling. |
| class STORAGE_EXPORT LocalFileStreamReader |
| : public NON_EXPORTED_BASE(FileStreamReader) { |
| public: |
| ~LocalFileStreamReader() override; |
| |
| // FileStreamReader overrides. |
| int Read(net::IOBuffer* buf, |
| int buf_len, |
| const net::CompletionCallback& callback) override; |
| int64_t GetLength(const net::Int64CompletionCallback& callback) override; |
| |
| private: |
| friend class FileStreamReader; |
| friend class content::LocalFileStreamReaderTest; |
| |
| LocalFileStreamReader(base::TaskRunner* task_runner, |
| const base::FilePath& file_path, |
| int64_t initial_offset, |
| const base::Time& expected_modification_time); |
| int Open(const net::CompletionCallback& callback); |
| |
| // Callbacks that are chained from Open for Read. |
| void DidVerifyForOpen(const net::CompletionCallback& callback, |
| int64_t get_length_result); |
| void DidOpenFileStream(const net::CompletionCallback& callback, |
| int result); |
| void DidSeekFileStream(const net::CompletionCallback& callback, |
| int64_t seek_result); |
| void DidOpenForRead(net::IOBuffer* buf, |
| int buf_len, |
| const net::CompletionCallback& callback, |
| int open_result); |
| |
| void DidGetFileInfoForGetLength(const net::Int64CompletionCallback& callback, |
| base::File::Error error, |
| const base::File::Info& file_info); |
| |
| scoped_refptr<base::TaskRunner> task_runner_; |
| std::unique_ptr<net::FileStream> stream_impl_; |
| const base::FilePath file_path_; |
| const int64_t initial_offset_; |
| const base::Time expected_modification_time_; |
| bool has_pending_open_; |
| base::WeakPtrFactory<LocalFileStreamReader> weak_factory_; |
| }; |
| |
| } // namespace storage |
| |
| #endif // STORAGE_BROWSER_BLOB_LOCAL_FILE_STREAM_READER_H_ |