Upstream version 10.39.225.0
[platform/framework/web/crosswalk.git] / src / net / base / upload_file_element_reader.h
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
3 // found in the LICENSE file.
4
5 #ifndef NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_
6 #define NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_
7
8 #include "base/compiler_specific.h"
9 #include "base/files/file.h"
10 #include "base/files/file_path.h"
11 #include "base/gtest_prod_util.h"
12 #include "base/memory/ref_counted.h"
13 #include "base/memory/scoped_ptr.h"
14 #include "base/memory/weak_ptr.h"
15 #include "base/time/time.h"
16 #include "net/base/upload_element_reader.h"
17
18 namespace base {
19 class TaskRunner;
20 }
21
22 namespace net {
23
24 class FileStream;
25
26 // An UploadElementReader implementation for file.
27 class NET_EXPORT UploadFileElementReader : public UploadElementReader {
28  public:
29   // |task_runner| is used to perform file operations. It must not be NULL.
30   UploadFileElementReader(base::TaskRunner* task_runner,
31                           const base::FilePath& path,
32                           uint64 range_offset,
33                           uint64 range_length,
34                           const base::Time& expected_modification_time);
35   virtual ~UploadFileElementReader();
36
37   const base::FilePath& path() const { return path_; }
38   uint64 range_offset() const { return range_offset_; }
39   uint64 range_length() const { return range_length_; }
40   const base::Time& expected_modification_time() const {
41     return expected_modification_time_;
42   }
43
44   // UploadElementReader overrides:
45   virtual const UploadFileElementReader* AsFileReader() const OVERRIDE;
46   virtual int Init(const CompletionCallback& callback) OVERRIDE;
47   virtual uint64 GetContentLength() const OVERRIDE;
48   virtual uint64 BytesRemaining() const OVERRIDE;
49   virtual int Read(IOBuffer* buf,
50                    int buf_length,
51                    const CompletionCallback& callback) OVERRIDE;
52
53  private:
54   FRIEND_TEST_ALL_PREFIXES(UploadDataStreamTest, FileSmallerThanLength);
55   FRIEND_TEST_ALL_PREFIXES(HttpNetworkTransactionTest,
56                            UploadFileSmallerThanLength);
57
58   // Resets this instance to the uninitialized state.
59   void Reset();
60
61   // These methods are used to implement Init().
62   void OnOpenCompleted(const CompletionCallback& callback, int result);
63   void OnSeekCompleted(const CompletionCallback& callback, int64 result);
64   void OnGetFileInfoCompleted(const CompletionCallback& callback,
65                               base::File::Info* file_info,
66                               bool result);
67
68   // This method is used to implement Read().
69   int OnReadCompleted(const CompletionCallback& callback, int result);
70
71   // Sets an value to override the result for GetContentLength().
72   // Used for tests.
73   struct NET_EXPORT_PRIVATE ScopedOverridingContentLengthForTests {
74     ScopedOverridingContentLengthForTests(uint64 value);
75     ~ScopedOverridingContentLengthForTests();
76   };
77
78   scoped_refptr<base::TaskRunner> task_runner_;
79   const base::FilePath path_;
80   const uint64 range_offset_;
81   const uint64 range_length_;
82   const base::Time expected_modification_time_;
83   scoped_ptr<FileStream> file_stream_;
84   uint64 content_length_;
85   uint64 bytes_remaining_;
86   base::WeakPtrFactory<UploadFileElementReader> weak_ptr_factory_;
87
88   DISALLOW_COPY_AND_ASSIGN(UploadFileElementReader);
89 };
90
91 }  // namespace net
92
93 #endif  // NET_BASE_UPLOAD_FILE_ELEMENT_READER_H_