| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 2013 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 #include "chrome/browser/chromeos/drive/webkit_file_stream_reader_impl.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/bind_helpers.h" | |
| 9 #include "base/callback.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "chrome/browser/chromeos/drive/drive.pb.h" | |
| 12 #include "chrome/browser/chromeos/drive/drive_file_stream_reader.h" | |
| 13 #include "content/public/browser/browser_thread.h" | |
| 14 #include "net/base/io_buffer.h" | |
| 15 #include "net/base/net_errors.h" | |
| 16 #include "net/http/http_byte_range.h" | |
| 17 | |
| 18 using content::BrowserThread; | |
| 19 | |
| 20 namespace drive { | |
| 21 namespace internal { | |
| 22 | |
| 23 WebkitFileStreamReaderImpl::WebkitFileStreamReaderImpl( | |
| 24 const DriveFileStreamReader::FileSystemGetter& file_system_getter, | |
| 25 base::SequencedTaskRunner* file_task_runner, | |
| 26 const base::FilePath& drive_file_path, | |
| 27 int64 offset, | |
| 28 const base::Time& expected_modification_time) | |
| 29 : stream_reader_( | |
| 30 new DriveFileStreamReader(file_system_getter, file_task_runner)), | |
| 31 drive_file_path_(drive_file_path), | |
| 32 offset_(offset), | |
| 33 expected_modification_time_(expected_modification_time), | |
| 34 file_size_(-1), | |
| 35 weak_ptr_factory_(this) { | |
| 36 DCHECK_GE(offset, 0); | |
| 37 } | |
| 38 | |
| 39 WebkitFileStreamReaderImpl::~WebkitFileStreamReaderImpl() { | |
| 40 } | |
| 41 | |
| 42 int WebkitFileStreamReaderImpl::Read(net::IOBuffer* buffer, | |
| 43 int buffer_length, | |
| 44 const net::CompletionCallback& callback) { | |
| 45 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 46 DCHECK(stream_reader_); | |
| 47 DCHECK(buffer); | |
| 48 DCHECK(!callback.is_null()); | |
| 49 | |
| 50 if (stream_reader_->IsInitialized()) | |
| 51 return stream_reader_->Read(buffer, buffer_length, callback); | |
| 52 | |
| 53 net::HttpByteRange byte_range; | |
| 54 byte_range.set_first_byte_position(offset_); | |
| 55 stream_reader_->Initialize( | |
| 56 drive_file_path_, | |
| 57 byte_range, | |
| 58 base::Bind(&WebkitFileStreamReaderImpl::OnStreamReaderInitialized, | |
| 59 weak_ptr_factory_.GetWeakPtr(), | |
| 60 base::Bind(&WebkitFileStreamReaderImpl | |
| 61 ::ReadAfterStreamReaderInitialized, | |
| 62 weak_ptr_factory_.GetWeakPtr(), | |
| 63 make_scoped_refptr(buffer), | |
| 64 buffer_length, callback))); | |
| 65 return net::ERR_IO_PENDING; | |
| 66 } | |
| 67 | |
| 68 int64 WebkitFileStreamReaderImpl::GetLength( | |
| 69 const net::Int64CompletionCallback& callback) { | |
| 70 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 71 DCHECK(stream_reader_); | |
| 72 DCHECK(!callback.is_null()); | |
| 73 | |
| 74 if (stream_reader_->IsInitialized()) { | |
| 75 // Returns file_size regardless of |offset_|. | |
| 76 return file_size_; | |
| 77 } | |
| 78 | |
| 79 net::HttpByteRange byte_range; | |
| 80 byte_range.set_first_byte_position(offset_); | |
| 81 stream_reader_->Initialize( | |
| 82 drive_file_path_, | |
| 83 byte_range, | |
| 84 base::Bind(&WebkitFileStreamReaderImpl::OnStreamReaderInitialized, | |
| 85 weak_ptr_factory_.GetWeakPtr(), | |
| 86 base::Bind(&WebkitFileStreamReaderImpl | |
| 87 ::GetLengthAfterStreamReaderInitialized, | |
| 88 weak_ptr_factory_.GetWeakPtr(), | |
| 89 callback))); | |
| 90 return net::ERR_IO_PENDING; | |
| 91 } | |
| 92 | |
| 93 void WebkitFileStreamReaderImpl::OnStreamReaderInitialized( | |
| 94 const net::CompletionCallback& callback, | |
| 95 int error, | |
| 96 scoped_ptr<ResourceEntry> entry) { | |
| 97 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 98 DCHECK(stream_reader_); | |
| 99 DCHECK(!callback.is_null()); | |
| 100 | |
| 101 if (error == net::OK) { | |
| 102 DCHECK(entry); | |
| 103 | |
| 104 // Check last modification time. | |
| 105 if (!expected_modification_time_.is_null() && | |
| 106 expected_modification_time_.ToInternalValue() != | |
| 107 entry->file_info().last_modified()) { | |
| 108 error = net::ERR_UPLOAD_FILE_CHANGED; | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 if (error != net::OK) { | |
| 113 // Found an error. Close the |stream_reader_| and notify it to the caller. | |
| 114 stream_reader_.reset(); | |
| 115 callback.Run(error); | |
| 116 return; | |
| 117 } | |
| 118 | |
| 119 // Remember the size of the file. | |
| 120 file_size_ = entry->file_info().size(); | |
| 121 callback.Run(net::OK); | |
| 122 } | |
| 123 | |
| 124 void WebkitFileStreamReaderImpl::ReadAfterStreamReaderInitialized( | |
| 125 scoped_refptr<net::IOBuffer> buffer, | |
| 126 int buffer_length, | |
| 127 const net::CompletionCallback& callback, | |
| 128 int initialization_result) { | |
| 129 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 130 DCHECK(!callback.is_null()); | |
| 131 | |
| 132 if (initialization_result != net::OK) { | |
| 133 callback.Run(initialization_result); | |
| 134 return; | |
| 135 } | |
| 136 | |
| 137 DCHECK(stream_reader_); | |
| 138 int result = stream_reader_->Read(buffer.get(), buffer_length, callback); | |
| 139 if (result != net::ERR_IO_PENDING) | |
| 140 callback.Run(result); | |
| 141 } | |
| 142 | |
| 143 void WebkitFileStreamReaderImpl::GetLengthAfterStreamReaderInitialized( | |
| 144 const net::Int64CompletionCallback& callback, | |
| 145 int initialization_result) { | |
| 146 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 147 DCHECK(!callback.is_null()); | |
| 148 | |
| 149 if (initialization_result != net::OK) { | |
| 150 callback.Run(initialization_result); | |
| 151 return; | |
| 152 } | |
| 153 | |
| 154 DCHECK_GE(file_size_, 0); | |
| 155 callback.Run(file_size_); | |
| 156 } | |
| 157 | |
| 158 } // namespace internal | |
| 159 } // namespace drive | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 148913005:
Create fileapi/ subdirectory under c/b/cros/drive. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src