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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef LATINIME_ADDITIONAL_PROXIMITY_CHARS_H
     18 #define LATINIME_ADDITIONAL_PROXIMITY_CHARS_H
     19 
     20 #include <cstring>
     21 #include <vector>
     22 
     23 #include "defines.h"
     24 
     25 namespace latinime {
     26 
     27 class AdditionalProximityChars {
     28  private:
     29     DISALLOW_IMPLICIT_CONSTRUCTORS(AdditionalProximityChars);
     30     static const int LOCALE_EN_US_SIZE = 2;
     31     static const int LOCALE_EN_US[LOCALE_EN_US_SIZE];
     32     static const int EN_US_ADDITIONAL_A_SIZE = 4;
     33     static const int EN_US_ADDITIONAL_A[];
     34     static const int EN_US_ADDITIONAL_E_SIZE = 4;
     35     static const int EN_US_ADDITIONAL_E[];
     36     static const int EN_US_ADDITIONAL_I_SIZE = 4;
     37     static const int EN_US_ADDITIONAL_I[];
     38     static const int EN_US_ADDITIONAL_O_SIZE = 4;
     39     static const int EN_US_ADDITIONAL_O[];
     40     static const int EN_US_ADDITIONAL_U_SIZE = 4;
     41     static const int EN_US_ADDITIONAL_U[];
     42 
     43     AK_FORCE_INLINE static bool isEnLocale(const std::vector<int> *locale) {
     44         const int NCHARS = NELEMS(LOCALE_EN_US);
     45         if (locale->size() < NCHARS) {
     46             return false;
     47         }
     48         for (int i = 0; i < NCHARS; ++i) {
     49             if ((*locale)[i] != LOCALE_EN_US[i]) {
     50                 return false;
     51             }
     52         }
     53         return true;
     54     }
     55 
     56  public:
     57     static int getAdditionalCharsSize(const std::vector<int> *locale, const int c) {
     58         if (!isEnLocale(locale)) {
     59             return 0;
     60         }
     61         switch (c) {
     62         case 'a':
     63             return EN_US_ADDITIONAL_A_SIZE;
     64         case 'e':
     65             return EN_US_ADDITIONAL_E_SIZE;
     66         case 'i':
     67             return EN_US_ADDITIONAL_I_SIZE;
     68         case 'o':
     69             return EN_US_ADDITIONAL_O_SIZE;
     70         case 'u':
     71             return EN_US_ADDITIONAL_U_SIZE;
     72         default:
     73             return 0;
     74         }
     75     }
     76 
     77     static const int *getAdditionalChars(const std::vector<int> *locale, const int c) {
     78         if (!isEnLocale(locale)) {
     79             return 0;
     80         }
     81         switch (c) {
     82         case 'a':
     83             return EN_US_ADDITIONAL_A;
     84         case 'e':
     85             return EN_US_ADDITIONAL_E;
     86         case 'i':
     87             return EN_US_ADDITIONAL_I;
     88         case 'o':
     89             return EN_US_ADDITIONAL_O;
     90         case 'u':
     91             return EN_US_ADDITIONAL_U;
     92         default:
     93             return 0;
     94         }
     95     }
     96 };
     97 } // namespace latinime
     98 #endif // LATINIME_ADDITIONAL_PROXIMITY_CHARS_H
     99