i18npool/source/transliteration/ignoreKiKuFollowedBySa_ja_JP.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   9  * This file incorporates work covered by the following license notice:
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  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <utility>
  22 #include <comphelper/string.hxx>
  23 #define TRANSLITERATION_KiKuFollowedBySa_ja_JP
  24 #include <transliteration_Ignore.hxx>
  25
  26 using namespace com::sun::star::uno;
  27 using namespace com::sun::star::lang;
  28
  29 using ::rtl::OUString;
  30
  31 namespace com { namespace sun { namespace star { namespace i18n {
  32
  33 OUString SAL_CALL
  34 ignoreKiKuFollowedBySa_ja_JP::folding( const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount, Sequence< sal_Int32 >& offset )
  35   throw(RuntimeException)
  36 {
  37     // Create a string buffer which can hold nCount + 1 characters.
  38     // The reference count is 1 now.
  39     rtl_uString * newStr = comphelper::string::rtl_uString_alloc(nCount);
  40     sal_Unicode * dst = newStr->buffer;
  41     const sal_Unicode * src = inStr.getStr() + startPos;
  42
  43     sal_Int32 *p = 0;
  44     sal_Int32 position = 0;
  45     if (useOffset) {
  46         // Allocate nCount length to offset argument.
  47         offset.realloc( nCount );
  48         p = offset.getArray();
  49         position = startPos;
  50     }
  51
  52     //
  53     sal_Unicode previousChar = *src ++;
  54     sal_Unicode currentChar;
  55
  56     // Translation
  57     while (-- nCount > 0) {
  58         currentChar = *src ++;
  59
  60         // KU + Sa-So --> KI + Sa-So
  61         if (previousChar == 0x30AF ) { // KATAKANA LETTER KU
  62             if (0x30B5 <= currentChar && // KATAKANA LETTER SA
  63                     currentChar <= 0x30BE) { // KATAKANA LETTER ZO
  64                 if (useOffset) {
  65                     *p ++ = position++;
  66                     *p ++ = position++;
  67                 }
  68                 *dst ++ = 0x30AD;          // KATAKANA LETTER KI
  69                 *dst ++ = currentChar;
  70                 previousChar = *src ++;
  71                 nCount --;
  72                 continue;
  73             }
  74         }
  75
  76         if (useOffset)
  77             *p ++ = position++;
  78         *dst ++ = previousChar;
  79         previousChar = currentChar;
  80     }
  81
  82     if (nCount == 0) {
  83         if (useOffset)
  84             *p = position;
  85         *dst ++ = previousChar;
  86     }
  87
  88     *dst = (sal_Unicode) 0;
  89
  90     newStr->length = sal_Int32(dst - newStr->buffer);
  91     if (useOffset)
  92         offset.realloc(newStr->length);
  93     return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
  94 }
  95
  96 } } } }
  97
  98 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */