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      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 
     39 NJ_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