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| 1 // Copyright (c) 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 "net/base/file_stream_context.h" |
| 6 |
| 7 #include "base/basictypes.h" |
| 8 #include "base/bind.h" |
| 9 #include "base/bind_helpers.h" |
| 10 #include "base/callback.h" |
| 11 #include "base/location.h" |
| 12 #include "base/platform_file.h" |
| 13 #include "base/task_runner_util.h" |
| 14 #include "net/android/content_uri_utils.h" |
| 15 #include "net/base/net_errors.h" |
| 16 |
| 17 namespace net { |
| 18 |
| 19 void FileStream::Context::OpenContentUrlAsync( |
| 20 const GURL& content_url, |
| 21 int open_flags, |
| 22 const CompletionCallback& callback) { |
| 23 DCHECK(!async_in_progress_); |
| 24 const bool posted = base::PostTaskAndReplyWithResult( |
| 25 task_runner_.get(), |
| 26 FROM_HERE, |
| 27 base::Bind(&Context::OpenContentUrlImpl, base::Unretained(this), |
| 28 content_url, open_flags), |
| 29 base::Bind(&Context::OnOpenCompleted, base::Unretained(this), callback)); |
| 30 DCHECK(posted); |
| 31 |
| 32 async_in_progress_ = true; |
| 33 } |
| 34 |
| 35 int FileStream::Context::OpenContentUrlSync( |
| 36 const GURL& content_url, int open_flags) { |
| 37 DCHECK(!async_in_progress_); |
| 38 |
| 39 OpenResult result = OpenContentUrlImpl(content_url, open_flags); |
| 40 file_ = result.file; |
| 41 if (file_ == base::kInvalidPlatformFileValue) { |
| 42 ProcessOpenError(result.error_code); |
| 43 } else { |
| 44 if (open_flags & base::PLATFORM_FILE_ASYNC) |
| 45 OnAsyncFileOpened(); |
| 46 } |
| 47 return result.error_code.result; |
| 48 } |
| 49 |
| 50 FileStream::Context::OpenResult FileStream::Context::OpenContentUrlImpl( |
| 51 const GURL& content_url, int open_flags) { |
| 52 // Check that only Read flags are set. |
| 53 DCHECK_EQ(open_flags & ~base::PLATFORM_FILE_ASYNC, |
| 54 base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ); |
| 55 base::PlatformFile file = OpenContentUrlForRead(content_url); |
| 56 if (file == base::kInvalidPlatformFileValue) |
| 57 return OpenResult(file, IOResult::FromOSError(GetLastErrno())); |
| 58 |
| 59 return OpenResult(file, IOResult(OK, 0)); |
| 60 } |
| 61 |
| 62 } // namespace net |
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