blob: 918105256c083e0baf6056469b3a5247dbc73274 (
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
|
// Copyright (c) 2011 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_HTTP_HTTP_BYTE_RANGE_H_
#define NET_HTTP_HTTP_BYTE_RANGE_H_
#pragma once
#include "base/basictypes.h"
#include "net/base/net_export.h"
namespace net {
// A container class that represents a "range" specified for range request
// specified by RFC 2616 Section 14.35.1.
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1
class NET_EXPORT HttpByteRange {
public:
HttpByteRange();
// Since this class is POD, we use constructor, assignment operator
// and destructor provided by compiler.
int64 first_byte_position() const { return first_byte_position_; }
void set_first_byte_position(int64 value) { first_byte_position_ = value; }
int64 last_byte_position() const { return last_byte_position_; }
void set_last_byte_position(int64 value) { last_byte_position_ = value; }
int64 suffix_length() const { return suffix_length_; }
void set_suffix_length(int64 value) { suffix_length_ = value; }
// Returns true if this is a suffix byte range.
bool IsSuffixByteRange() const;
// Returns true if the first byte position is specified in this request.
bool HasFirstBytePosition() const;
// Returns true if the last byte position is specified in this request.
bool HasLastBytePosition() const;
// Returns true if this range is valid.
bool IsValid() const;
// A method that when given the size in bytes of a file, adjust the internal
// |first_byte_position_| and |last_byte_position_| values according to the
// range specified by this object. If the range specified is invalid with
// regard to the size or |size| is negative, returns false and there will be
// no side effect.
// Returns false if this method is called more than once and there will be
// no side effect.
bool ComputeBounds(int64 size);
private:
int64 first_byte_position_;
int64 last_byte_position_;
int64 suffix_length_;
bool has_computed_bounds_;
};
} // namespace net
#endif // NET_HTTP_HTTP_BYTE_RANGE_H_
|
