blob: cc6d92fb5e16d9ba88014d342b861e2b3aec99de (
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
|
// 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.
//
// Class for parsing lists of integers into ranges.
//
// The anti-phishing and anti-malware protocol sends ASCII strings of numbers
// and ranges of numbers corresponding to chunks of whitelists and blacklists.
// Clients of this protocol need to be able to convert back and forth between
// this representation, and individual integer chunk numbers. The ChunkRange
// class is a simple and compact mechanism for storing a continuous list of
// chunk numbers.
#ifndef CHROME_BROWSER_SAFE_BROWSING_CHUNK_RANGE_H_
#define CHROME_BROWSER_SAFE_BROWSING_CHUNK_RANGE_H_
#pragma once
#include <string>
#include <vector>
// ChunkRange ------------------------------------------------------------------
// Each ChunkRange represents a continuous range of chunk numbers [start, stop].
class ChunkRange {
public:
explicit ChunkRange(int start);
ChunkRange(int start, int stop);
ChunkRange(const ChunkRange& rhs);
inline int start() const { return start_; }
inline int stop() const { return stop_; }
bool operator==(const ChunkRange& rhs) const {
return start_ == rhs.start() && stop_ == rhs.stop();
}
private:
int start_;
int stop_;
};
// Helper functions ------------------------------------------------------------
// Convert a set of ranges into individual chunk numbers.
void RangesToChunks(const std::vector<ChunkRange>& ranges,
std::vector<int>* chunks);
// Returns 'true' if the string was successfully converted to ChunkRanges,
// 'false' if the input was malformed.
// The string must be in the form: "1-100,398,415,1138-2001,2019".
bool StringToRanges(const std::string& input,
std::vector<ChunkRange>* ranges);
// Convenience for going from a list of chunks to a string in protocol
// format.
void ChunksToRangeString(const std::vector<int>& chunks, std::string* result);
// Tests if a chunk number is contained a sorted vector of ChunkRanges.
bool IsChunkInRange(int chunk_number, const std::vector<ChunkRange>& ranges);
#endif // CHROME_BROWSER_SAFE_BROWSING_CHUNK_RANGE_H_
|
