1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef AsyncFileStream_h
#define AsyncFileStream_h
#if ENABLE(BLOB) || ENABLE(FILE_SYSTEM)
#include "FileStreamClient.h"
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class KURL;
class AsyncFileStream : public RefCounted<AsyncFileStream> {
public:
virtual ~AsyncFileStream() { }
virtual void getSize(const String& path, double expectedModificationTime) = 0;
virtual void openForRead(const String& path, long long offset, long long length) = 0;
virtual void openForWrite(const String& path) = 0;
virtual void close() = 0;
virtual void read(char* buffer, int length) = 0;
virtual void write(const KURL& blobURL, long long position, int length) = 0;
virtual void truncate(long long position) = 0;
virtual void stop() = 0;
FileStreamClient* client() const { return m_client; }
void setClient(FileStreamClient* client) { m_client = client; }
protected:
AsyncFileStream(FileStreamClient* client)
: m_client(client)
{
}
private:
FileStreamClient* m_client;
};
} // namespace WebCore
#endif // ENABLE(BLOB) || ENABLE(FILE_SYSTEM)
#endif // AsyncFileStream_h
|
