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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 // For loading files, we make use of overlapped i/o to ensure that reading from | 5 // For loading files, we make use of overlapped i/o to ensure that reading from |
6 // the filesystem (e.g., a network filesystem) does not block the calling | 6 // the filesystem (e.g., a network filesystem) does not block the calling |
7 // thread. An alternative approach would be to use a background thread or pool | 7 // thread. An alternative approach would be to use a background thread or pool |
8 // of threads, but it seems better to leverage the operating system's ability | 8 // of threads, but it seems better to leverage the operating system's ability |
9 // to do background file reads for us. | 9 // to do background file reads for us. |
10 // | 10 // |
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74 !network_delegate->CanAccessFile(*request, file_path)) { | 74 !network_delegate->CanAccessFile(*request, file_path)) { |
75 return new URLRequestErrorJob(request, network_delegate, ERR_ACCESS_DENIED); | 75 return new URLRequestErrorJob(request, network_delegate, ERR_ACCESS_DENIED); |
76 } | 76 } |
77 // We need to decide whether to create URLRequestFileJob for file access or | 77 // We need to decide whether to create URLRequestFileJob for file access or |
78 // URLRequestFileDirJob for directory access. To avoid accessing the | 78 // URLRequestFileDirJob for directory access. To avoid accessing the |
79 // filesystem, we only look at the path string here. | 79 // filesystem, we only look at the path string here. |
80 // The code in the URLRequestFileJob::Start() method discovers that a path, | 80 // The code in the URLRequestFileJob::Start() method discovers that a path, |
81 // which doesn't end with a slash, should really be treated as a directory, | 81 // which doesn't end with a slash, should really be treated as a directory, |
82 // and it then redirects to the URLRequestFileDirJob. | 82 // and it then redirects to the URLRequestFileDirJob. |
83 if (is_file && | 83 if (is_file && |
84 file_util::EndsWithSeparator(file_path) && | 84 file_path.EndsWithSeparator() && |
85 file_path.IsAbsolute()) | 85 file_path.IsAbsolute()) |
86 return new URLRequestFileDirJob(request, network_delegate, file_path); | 86 return new URLRequestFileDirJob(request, network_delegate, file_path); |
87 | 87 |
88 // Use a regular file request job for all non-directories (including invalid | 88 // Use a regular file request job for all non-directories (including invalid |
89 // file names). | 89 // file names). |
90 return new URLRequestFileJob(request, network_delegate, file_path); | 90 return new URLRequestFileJob(request, network_delegate, file_path); |
91 } | 91 } |
92 | 92 |
93 void URLRequestFileJob::Start() { | 93 void URLRequestFileJob::Start() { |
94 FileMetaInfo* meta_info = new FileMetaInfo(); | 94 FileMetaInfo* meta_info = new FileMetaInfo(); |
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318 NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, result)); | 318 NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, result)); |
319 } | 319 } |
320 | 320 |
321 remaining_bytes_ -= result; | 321 remaining_bytes_ -= result; |
322 DCHECK_GE(remaining_bytes_, 0); | 322 DCHECK_GE(remaining_bytes_, 0); |
323 | 323 |
324 NotifyReadComplete(result); | 324 NotifyReadComplete(result); |
325 } | 325 } |
326 | 326 |
327 } // namespace net | 327 } // namespace net |
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