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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BASE_I18N_STRING_SEARCH_H_ | |
| 6 #define BASE_I18N_STRING_SEARCH_H_ | |
| 7 | |
| 8 #include "base/i18n/base_i18n_export.h" | |
| 9 #include "base/strings/string16.h" | |
| 10 | |
| 11 struct UStringSearch; | |
| 12 | |
| 13 namespace base { | |
| 14 namespace i18n { | |
| 15 | |
| 16 // Returns true if |in_this| contains |find_this|. If |match_index| or | |
| 17 // |match_length| are non-NULL, they are assigned the start position and total | |
| 18 // length of the match. | |
| 19 // | |
| 20 // Only differences between base letters are taken into consideration. Case and | |
| 21 // accent differences are ignored. Please refer to 'primary level' in | |
| 22 // http://userguide.icu-project.org/collation/concepts for additional details. | |
| 23 BASE_I18N_EXPORT | |
| 24 bool StringSearchIgnoringCaseAndAccents(const string16& find_this, | |
| 25 const string16& in_this, | |
| 26 size_t* match_index, | |
| 27 size_t* match_length); | |
| 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 | |
| 50 } // namespace i18n | |
| 51 } // namespace base | |
| 52 | |
| 53 #endif // BASE_I18N_STRING_SEARCH_H_ | |
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