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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
// 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 BASE_I18N_STRING_SEARCH_H_
#define BASE_I18N_STRING_SEARCH_H_
#include <stddef.h>
#include "base/i18n/base_i18n_export.h"
#include "base/strings/string16.h"
struct UStringSearch;
namespace base {
namespace i18n {
// Returns true if |in_this| contains |find_this|. If |match_index| or
// |match_length| are non-NULL, they are assigned the start position and total
// length of the match.
//
// Only differences between base letters are taken into consideration. Case and
// accent differences are ignored. Please refer to 'primary level' in
// http://userguide.icu-project.org/collation/concepts for additional details.
BASE_I18N_EXPORT
bool StringSearchIgnoringCaseAndAccents(const string16& find_this,
const string16& in_this,
size_t* match_index,
size_t* match_length);
// Returns true if |in_this| contains |find_this|. If |match_index| or
// |match_length| are non-NULL, they are assigned the start position and total
// length of the match.
//
// When |case_sensitive| is false, only differences between base letters are
// taken into consideration. Case and accent differences are ignored.
// Please refer to 'primary level' in
// http://userguide.icu-project.org/collation/concepts for additional details.
// When |forward_search| is true, finds the first instance of |find_this|,
// otherwise finds the last instance
BASE_I18N_EXPORT
bool StringSearch(const string16& find_this,
const string16& in_this,
size_t* match_index,
size_t* match_length,
bool case_sensitive,
bool forward_search);
// This class is for speeding up multiple StringSearch()
// with the same |find_this| argument. |find_this| is passed as the constructor
// argument, and precomputation for searching is done only at that time.
class BASE_I18N_EXPORT FixedPatternStringSearch {
public:
explicit FixedPatternStringSearch(const string16& find_this,
bool case_sensitive);
~FixedPatternStringSearch();
// Returns true if |in_this| contains |find_this|. If |match_index| or
// |match_length| are non-NULL, they are assigned the start position and total
// length of the match.
bool Search(const string16& in_this,
size_t* match_index,
size_t* match_length,
bool forward_search);
private:
string16 find_this_;
UStringSearch* search_;
};
// This class is for speeding up multiple StringSearchIgnoringCaseAndAccents()
// with the same |find_this| argument. |find_this| is passed as the constructor
// argument, and precomputation for searching is done only at that time.
class BASE_I18N_EXPORT FixedPatternStringSearchIgnoringCaseAndAccents {
public:
explicit FixedPatternStringSearchIgnoringCaseAndAccents(
const string16& find_this);
// Returns true if |in_this| contains |find_this|. If |match_index| or
// |match_length| are non-NULL, they are assigned the start position and total
// length of the match.
bool Search(const string16& in_this,
size_t* match_index,
size_t* match_length);
private:
FixedPatternStringSearch base_search_;
};
} // namespace i18n
} // namespace base
#endif // BASE_I18N_STRING_SEARCH_H_
|
