blob: d703c3d1b08a7b02e163e6a0463ccedd581c3b15 (
plain)
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
|
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_BASE_UPLOAD_DATA_STREAM_H_
#define NET_BASE_UPLOAD_DATA_STREAM_H_
#include "net/base/file_stream.h"
#include "net/base/upload_data.h"
namespace net {
class IOBuffer;
class UploadDataStream {
public:
explicit UploadDataStream(const UploadData* data);
~UploadDataStream();
// Returns the stream's buffer and buffer length.
IOBuffer* buf() const { return buf_; }
size_t buf_len() const { return buf_len_; }
// Call to indicate that a portion of the stream's buffer was consumed. This
// call modifies the stream's buffer so that it contains the next segment of
// the upload data to be consumed.
void DidConsume(size_t num_bytes);
// Returns the total size of the data stream and the current position.
uint64 size() const { return total_size_; }
uint64 position() const { return current_position_; }
private:
void FillBuf();
const UploadData* data_;
// This buffer is filled with data to be uploaded. The data to be sent is
// always at the front of the buffer. If we cannot send all of the buffer at
// once, then we memmove the remaining portion and back-fill the buffer for
// the next "write" call. buf_len_ indicates how much data is in the buffer.
enum { kBufSize = 16384 };
scoped_refptr<IOBuffer> buf_;
size_t buf_len_;
// Iterator to the upload element to be written to the send buffer next.
std::vector<UploadData::Element>::const_iterator next_element_;
// The byte offset into next_element_'s data buffer if the next element is
// a TYPE_BYTES element.
size_t next_element_offset_;
// A stream to the currently open file, for next_element_ if the next element
// is a TYPE_FILE element.
FileStream next_element_stream_;
// The number of bytes remaining to be read from the currently open file
// if the next element is of TYPE_FILE.
uint64 next_element_remaining_;
// Size and current read position within the stream.
uint64 total_size_;
uint64 current_position_;
DISALLOW_EVIL_CONSTRUCTORS(UploadDataStream);
};
} // namespace net
#endif // NET_BASE_UPLOAD_DATA_STREAM_H_
|
