1/*
2 * Copyright (C) 2014 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef BlobDataFileReference_h
27#define BlobDataFileReference_h
28
29#include <wtf/Markable.h>
30#include <wtf/RefCounted.h>
31#include <wtf/WallTime.h>
32#include <wtf/text/WTFString.h>
33
34namespace WebCore {
35
36class WEBCORE_EXPORT BlobDataFileReference : public RefCounted<BlobDataFileReference> {
37public:
38 static Ref<BlobDataFileReference> create(const String& path)
39 {
40 return adoptRef(*new BlobDataFileReference(path));
41 }
42
43 virtual ~BlobDataFileReference();
44
45 void startTrackingModifications();
46
47 const String& path();
48 unsigned long long size();
49 Optional<WallTime> expectedModificationTime();
50
51 virtual void prepareForFileAccess();
52 virtual void revokeFileAccess();
53
54protected:
55 BlobDataFileReference(const String& path);
56
57private:
58#if ENABLE(FILE_REPLACEMENT)
59 void generateReplacementFile();
60#endif
61
62 String m_path;
63#if ENABLE(FILE_REPLACEMENT)
64 String m_replacementPath;
65 bool m_replacementShouldBeGenerated { false };
66#endif
67 unsigned long long m_size { 0 };
68 Markable<WallTime, WallTime::MarkableTraits> m_expectedModificationTime;
69};
70
71}
72
73#endif // BlobDataFileReference_h
74