| // Copyright 2021 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/browser/ash/input_method/diacritics_checker.h" |
| |
| #include "base/strings/utf_string_conversions.h" |
| #include "third_party/re2/src/re2/re2.h" |
| |
| namespace { |
| |
| // Intentionally only covering Latin-script accented letters likely found in |
| // French, Spanish, Dutch, Swedish, Norwegian, Danish, and Catalan. |
| constexpr char HAS_DIACRITICS_REGEX[] = |
| "[" |
| "áàâäāåÁÀÂÄĀÅ" |
| "éèêëēÉÈÊËĒ" |
| "íìîïīÍÌÎÏĪ" |
| "óòôöōøÓÒÔÖŌØ" |
| "úùûüūÚÙÛÜŪ" |
| "ýỳŷÿȳÝỲŶŸȲ" |
| "çñæœÇÑÆŒ" |
| "]"; |
| |
| } // namespace |
| |
| namespace ash { |
| namespace input_method { |
| |
| bool HasDiacritics(const std::u16string& text) { |
| if (text.empty()) { |
| return false; |
| } |
| |
| std::string text_utf8 = base::UTF16ToUTF8(text); |
| return re2::RE2::PartialMatch(text_utf8, HAS_DIACRITICS_REGEX); |
| } |
| |
| } // namespace input_method |
| } // namespace ash |
