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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_I18N_STRING_SEARCH_H_ | 5 #ifndef BASE_I18N_STRING_SEARCH_H_ |
6 #define BASE_I18N_STRING_SEARCH_H_ | 6 #define BASE_I18N_STRING_SEARCH_H_ |
7 | 7 |
8 #include "base/i18n/base_i18n_export.h" | 8 #include "base/i18n/base_i18n_export.h" |
9 #include "base/strings/string16.h" | 9 #include "base/strings/string16.h" |
10 | 10 |
| 11 struct UStringSearch; |
| 12 |
11 namespace base { | 13 namespace base { |
12 namespace i18n { | 14 namespace i18n { |
13 | 15 |
14 // Returns true if |in_this| contains |find_this|. If |match_index| or | 16 // Returns true if |in_this| contains |find_this|. If |match_index| or |
15 // |match_length| are non-NULL, they are assigned the start position and total | 17 // |match_length| are non-NULL, they are assigned the start position and total |
16 // length of the match. | 18 // length of the match. |
17 // | 19 // |
18 // Only differences between base letters are taken into consideration. Case and | 20 // Only differences between base letters are taken into consideration. Case and |
19 // accent differences are ignored. Please refer to 'primary level' in | 21 // accent differences are ignored. Please refer to 'primary level' in |
20 // http://userguide.icu-project.org/collation/concepts for additional details. | 22 // http://userguide.icu-project.org/collation/concepts for additional details. |
21 BASE_I18N_EXPORT | 23 BASE_I18N_EXPORT |
22 bool StringSearchIgnoringCaseAndAccents(const string16& find_this, | 24 bool StringSearchIgnoringCaseAndAccents(const string16& find_this, |
23 const string16& in_this, | 25 const string16& in_this, |
24 size_t* match_index, | 26 size_t* match_index, |
25 size_t* match_length); | 27 size_t* match_length); |
26 | 28 |
| 29 // This class is for speeding up multiple StringSearchIgnoringCaseAndAccents() |
| 30 // with the same |find_this| argument. |find_this| is passed as the constructor |
| 31 // argument, and precomputation for searching is done only at that timing. |
| 32 class BASE_I18N_EXPORT FixedPatternStringSearchIgnoringCaseAndAccents { |
| 33 public: |
| 34 explicit FixedPatternStringSearchIgnoringCaseAndAccents( |
| 35 const string16& find_this); |
| 36 ~FixedPatternStringSearchIgnoringCaseAndAccents(); |
| 37 |
| 38 // Returns true if |in_this| contains |find_this|. If |match_index| or |
| 39 // |match_length| are non-NULL, they are assigned the start position and total |
| 40 // length of the match. |
| 41 bool Search(const string16& in_this, |
| 42 size_t* match_index, |
| 43 size_t* match_length); |
| 44 |
| 45 private: |
| 46 string16 find_this_; |
| 47 UStringSearch* search_; |
| 48 }; |
| 49 |
27 } // namespace i18n | 50 } // namespace i18n |
28 } // namespace base | 51 } // namespace base |
29 | 52 |
30 #endif // BASE_I18N_STRING_SEARCH_H_ | 53 #endif // BASE_I18N_STRING_SEARCH_H_ |
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