i18npool/source/transliteration/ignoreIandEfollowedByYa_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 <i18nutil/oneToOneMapping.hxx>
  21
  22 #include <transliteration_Ignore.hxx>
  23
  24 #include <numeric>
  25
  26 using namespace com::sun::star::uno;
  27
  28 namespace i18npool {
  29
  30 i18nutil::OneToOneMappingTable_t const IandE[] = {
  31     { 0x30A3, 0x0000 },  // KATAKANA LETTER SMALL I
  32     { 0x30A4, 0x0000 },  // KATAKANA LETTER I
  33     { 0x30A7, 0x0000 },  // KATAKANA LETTER SMALL E
  34     { 0x30A8, 0x0000 },  // KATAKANA LETTER E
  35     { 0x30AD, 0x0000 },  // KATAKANA LETTER KI
  36     { 0x30AE, 0x0000 },  // KATAKANA LETTER GI
  37     { 0x30B1, 0x0000 },  // KATAKANA LETTER KE
  38     { 0x30B2, 0x0000 },  // KATAKANA LETTER GE
  39     { 0x30B7, 0x0000 },  // KATAKANA LETTER SI
  40     { 0x30B8, 0x0000 },  // KATAKANA LETTER ZI
  41     { 0x30BB, 0x0000 },  // KATAKANA LETTER SE
  42     { 0x30BC, 0x0000 },  // KATAKANA LETTER ZE
  43     { 0x30C1, 0x0000 },  // KATAKANA LETTER TI
  44     { 0x30C2, 0x0000 },  // KATAKANA LETTER DI
  45     { 0x30C6, 0x0000 },  // KATAKANA LETTER TE
  46     { 0x30C7, 0x0000 },  // KATAKANA LETTER DE
  47     { 0x30CB, 0x0000 },  // KATAKANA LETTER NI
  48     { 0x30CD, 0x0000 },  // KATAKANA LETTER NE
  49     { 0x30D2, 0x0000 },  // KATAKANA LETTER HI
  50     { 0x30D3, 0x0000 },  // KATAKANA LETTER BI
  51     { 0x30D4, 0x0000 },  // KATAKANA LETTER PI
  52     { 0x30D8, 0x0000 },  // KATAKANA LETTER HE
  53     { 0x30D9, 0x0000 },  // KATAKANA LETTER BE
  54     { 0x30DA, 0x0000 },  // KATAKANA LETTER PE
  55     { 0x30DF, 0x0000 },  // KATAKANA LETTER MI
  56     { 0x30E1, 0x0000 },  // KATAKANA LETTER ME
  57     { 0x30EA, 0x0000 },  // KATAKANA LETTER RI
  58     { 0x30EC, 0x0000 },  // KATAKANA LETTER RE
  59     { 0x30F0, 0x0000 },  // KATAKANA LETTER WI
  60     { 0x30F1, 0x0000 },  // KATAKANA LETTER WE
  61     { 0x30F6, 0x0000 },  // KATAKANA LETTER SMALL KE
  62     { 0x30F8, 0x0000 },  // KATAKANA LETTER VI
  63     { 0x30F9, 0x0000 }   // KATAKANA LETTER VE
  64 };
  65
  66
  67 OUString
  68 ignoreIandEfollowedByYa_ja_JP::foldingImpl( const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount, Sequence< sal_Int32 >* pOffset )
  69 {
  70     // Create a string buffer which can hold nCount + 1 characters.
  71     // The reference count is 1 now.
  72     rtl_uString * newStr = rtl_uString_alloc(nCount);
  73     sal_Unicode * dst = newStr->buffer;
  74     const sal_Unicode * src = inStr.getStr() + startPos;
  75
  76     if (pOffset) {
  77         // Allocate nCount length to offset argument.
  78         pOffset->realloc( nCount );
  79         auto [begin, end] = asNonConstRange(*pOffset);
  80         std::iota(begin, end, startPos);
  81     }
  82
  83
  84     sal_Unicode previousChar = *src ++;
  85     sal_Unicode currentChar;
  86
  87     // One to one mapping
  88     i18nutil::oneToOneMapping aTable(IandE, sizeof(IandE));
  89
  90     // Translation
  91     while (-- nCount > 0) {
  92         currentChar = *src ++;
  93
  94         // the character listed in above table + YA --> the character + A
  95         if (currentChar == 0x30E3 ||   // KATAKANA LETTER SMALL YA
  96                 currentChar == 0x30E4) {   // KATAKANA LETTER YA
  97             if (aTable[ previousChar ] != previousChar) {
  98                 *dst ++ = previousChar;
  99                 *dst ++ = 0x30A2;          // KATAKANA LETTER A
 100                 previousChar = *src ++;
 101                 nCount --;
 102                 continue;
 103             }
 104         }
 105
 106         *dst ++ = previousChar;
 107         previousChar = currentChar;
 108     }
 109
 110     if (nCount == 0) {
 111         *dst ++ = previousChar;
 112     }
 113
 114     *dst = u'\0';
 115
 116     newStr->length = sal_Int32(dst - newStr->buffer);
 117     if (pOffset)
 118         pOffset->realloc(newStr->length);
 119     return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
 120 }
 121
 122 }
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */