i18npool/source/transliteration/ignoreKiKuFollowedBySa_ja_JP.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  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 #include <transliteration_Ignore.hxx>
  21
  22 using namespace com::sun::star::uno;
  23 using namespace com::sun::star::lang;
  24
  25 namespace com { namespace sun { namespace star { namespace i18n {
  26
  27 OUString SAL_CALL
  28 ignoreKiKuFollowedBySa_ja_JP::folding( const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount, Sequence< sal_Int32 >& offset )
  29   throw(RuntimeException, std::exception)
  30 {
  31     // Create a string buffer which can hold nCount + 1 characters.
  32     // The reference count is 1 now.
  33     rtl_uString * newStr = rtl_uString_alloc(nCount);
  34     sal_Unicode * dst = newStr->buffer;
  35     const sal_Unicode * src = inStr.getStr() + startPos;
  36
  37     sal_Int32 *p = 0;
  38     sal_Int32 position = 0;
  39     if (useOffset) {
  40         // Allocate nCount length to offset argument.
  41         offset.realloc( nCount );
  42         p = offset.getArray();
  43         position = startPos;
  44     }
  45
  46
  47     sal_Unicode previousChar = *src ++;
  48     sal_Unicode currentChar;
  49
  50     // Translation
  51     while (-- nCount > 0) {
  52         currentChar = *src ++;
  53
  54         // KU + Sa-So --> KI + Sa-So
  55         if (previousChar == 0x30AF ) { // KATAKANA LETTER KU
  56             if (0x30B5 <= currentChar && // KATAKANA LETTER SA
  57                     currentChar <= 0x30BE) { // KATAKANA LETTER ZO
  58                 if (useOffset) {
  59                     *p ++ = position++;
  60                     *p ++ = position++;
  61                 }
  62                 *dst ++ = 0x30AD;          // KATAKANA LETTER KI
  63                 *dst ++ = currentChar;
  64                 previousChar = *src ++;
  65                 nCount --;
  66                 continue;
  67             }
  68         }
  69
  70         if (useOffset)
  71             *p ++ = position++;
  72         *dst ++ = previousChar;
  73         previousChar = currentChar;
  74     }
  75
  76     if (nCount == 0) {
  77         if (useOffset)
  78             *p = position;
  79         *dst ++ = previousChar;
  80     }
  81
  82     *dst = (sal_Unicode) 0;
  83
  84     newStr->length = sal_Int32(dst - newStr->buffer);
  85     if (useOffset)
  86         offset.realloc(newStr->length);
  87     return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
  88 }
  89
  90 } } } }
  91
  92 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */