1/*
2 * Copyright (C) 2008,2009  OMRON SOFTWARE Co., Ltd.
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#include "nj_lib.h"
18#include "nj_ext.h"
19
20
21#define HIRA_KATA_OFFSET (0x0060)
22
23#define ZEN_CHAR_LEN  1
24
25#define CHAR_TO_WCHAR(s)                                        \
26    ((NJ_UINT16)( (((NJ_UINT8*)(s))[0] << 8) | ((NJ_UINT8*)(s))[1] ))
27
28#define SET_WCHAR_TO_CHAR(s, c)                                \
29    {                                                          \
30        ((NJ_UINT8*)(s))[0] = (NJ_UINT8)(((c) >> 8) & 0x00ff); \
31        ((NJ_UINT8*)(s))[1] = (NJ_UINT8)(((c))      & 0x00ff); \
32    }
33
34#define IS_HIRAGANA_WCHAR(c)  ( ((c) >= 0x3041) && ((c) <= 0x3093) )
35
36
37
38
39NJ_INT16 nje_convert_hira_to_kata(NJ_CHAR *hira, NJ_CHAR *kata, NJ_UINT16 len)
40{
41    NJ_UINT16 pnt;
42    NJ_UINT16 wchar;
43
44
45    pnt = 0;
46    while (pnt < len) {
47        if (*hira == NJ_CHAR_NUL) {
48
49            return pnt;
50        }
51
52
53        wchar = CHAR_TO_WCHAR(hira);
54        hira++;
55        pnt++;
56
57        if (IS_HIRAGANA_WCHAR(wchar)) {
58
59            SET_WCHAR_TO_CHAR(kata, wchar + HIRA_KATA_OFFSET);
60            kata += ZEN_CHAR_LEN;
61        } else {
62            SET_WCHAR_TO_CHAR(kata, wchar);
63            kata += ZEN_CHAR_LEN;
64        }
65    }
66
67
68    *kata = NJ_CHAR_NUL;
69    return pnt;
70}
71