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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 
     22 #include "defines.h"
     23 
     24 namespace latinime {
     25 
     26 class AdditionalProximityChars {
     27  private:
     28     DISALLOW_IMPLICIT_CONSTRUCTORS(AdditionalProximityChars);
     29     static const char *LOCALE_EN_US;
     30     static const int EN_US_ADDITIONAL_A_SIZE = 4;
     31     static const int EN_US_ADDITIONAL_A[];
     32     static const int EN_US_ADDITIONAL_E_SIZE = 4;
     33     static const int EN_US_ADDITIONAL_E[];
     34     static const int EN_US_ADDITIONAL_I_SIZE = 4;
     35     static const int EN_US_ADDITIONAL_I[];
     36     static const int EN_US_ADDITIONAL_O_SIZE = 4;
     37     static const int EN_US_ADDITIONAL_O[];
     38     static const int EN_US_ADDITIONAL_U_SIZE = 4;
     39     static const int EN_US_ADDITIONAL_U[];
     40 
     41     AK_FORCE_INLINE static bool isEnLocale(const char *localeStr) {
     42         const size_t LOCALE_EN_US_SIZE = strlen(LOCALE_EN_US);
     43         return localeStr && strlen(localeStr) >= LOCALE_EN_US_SIZE
     44                 && strncmp(localeStr, LOCALE_EN_US, LOCALE_EN_US_SIZE) == 0;
     45     }
     46 
     47  public:
     48     static int getAdditionalCharsSize(const char *const localeStr, const int c) {
     49         if (!isEnLocale(localeStr)) {
     50             return 0;
     51         }
     52         switch (c) {
     53         case 'a':
     54             return EN_US_ADDITIONAL_A_SIZE;
     55         case 'e':
     56             return EN_US_ADDITIONAL_E_SIZE;
     57         case 'i':
     58             return EN_US_ADDITIONAL_I_SIZE;
     59         case 'o':
     60             return EN_US_ADDITIONAL_O_SIZE;
     61         case 'u':
     62             return EN_US_ADDITIONAL_U_SIZE;
     63         default:
     64             return 0;
     65         }
     66     }
     67 
     68     static const int *getAdditionalChars(const char *const localeStr, const int c) {
     69         if (!isEnLocale(localeStr)) {
     70             return 0;
     71         }
     72         switch (c) {
     73         case 'a':
     74             return EN_US_ADDITIONAL_A;
     75         case 'e':
     76             return EN_US_ADDITIONAL_E;
     77         case 'i':
     78             return EN_US_ADDITIONAL_I;
     79         case 'o':
     80             return EN_US_ADDITIONAL_O;
     81         case 'u':
     82             return EN_US_ADDITIONAL_U;
     83         default:
     84             return 0;
     85         }
     86     }
     87 };
     88 } // namespace latinime
     89 #endif // LATINIME_ADDITIONAL_PROXIMITY_CHARS_H
     90