additional_proximity_chars.h revision 4ef27c035892888df82d9c9f32ac12ed48c8308f 
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
25namespace latinime {
26
27class 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