/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
sal_Unicode widthfolding::decompose_ja_voiced_sound_marksChar2Char (sal_Unicode inChar)
{ if (0x30a0 <= inChar && inChar <= 0x30ff) {
sal_Int16 i = inChar - 0x3040; if (decomposition_table[i].decomposited_character_1) return 0xFFFF;
} return inChar;
}
/** * Decompose Japanese specific voiced and semi-voiced sound marks.
*/
OUString widthfolding::decompose_ja_voiced_sound_marks (const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount, Sequence< sal_Int32 >* pOffset )
{ // Create a string buffer which can hold nCount * 2 + 1 characters. // Its size may become double of nCount. // The reference count is 1 now.
rtl_uString * newStr = rtl_uString_alloc(nCount * 2);
sal_Int32 *p = nullptr;
sal_Int32 position = 0; if (pOffset) { // Allocate double of nCount length to offset argument.
pOffset->realloc( nCount * 2 );
p = pOffset->getArray();
position = startPos;
}
// Prepare pointers of unicode character arrays. const sal_Unicode* src = inStr.getStr() + startPos;
sal_Unicode* dst = newStr->buffer;
// Decomposition: GA --> KA + voice-mark while (nCount -- > 0) {
sal_Unicode c = *src++; // see http://charts.unicode.org/Web/U3040.html Hiragana (U+3040..U+309F) // see http://charts.unicode.org/Web/U30A0.html Katakana (U+30A0..U+30FF) // Hiragana is not applied to decomposition. // Only Katakana is applied to decomposition if (0x30a0 <= c && c <= 0x30ff) { int i = int(c - 0x3040);
sal_Unicode first = decomposition_table[i].decomposited_character_1; if (first != 0x0000) {
*dst ++ = first;
*dst ++ = decomposition_table[i].decomposited_character_2; // second if (pOffset) {
*p ++ = position;
*p ++ = position ++;
} continue;
}
}
*dst ++ = c; if (pOffset)
*p ++ = position ++;
}
*dst = u'\0';
newStr->length = sal_Int32(dst - newStr->buffer); if (pOffset)
pOffset->realloc(newStr->length); return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
}
/** * Compose Japanese specific voiced and semi-voiced sound marks.
*/
OUString widthfolding::compose_ja_voiced_sound_marks (const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount, Sequence< sal_Int32 >* pOffset, sal_Int32 nFlags )
{ // Create a string buffer which can hold nCount + 1 characters. // Its size may become equal to nCount or smaller. // The reference count is 1 now.
rtl_uString * newStr = rtl_uString_alloc(nCount);
// Prepare pointers of unicode character arrays. const sal_Unicode* src = inStr.getStr() + startPos;
sal_Unicode* dst = newStr->buffer;
// This conversion algorithm requires at least one character. if (nCount > 0) {
// .. .. KA VOICE .. .. // ^ ^ // previousChar currentChar // ^ // position // // will be converted to // .. .. GA .. ..
sal_Int32 *p = nullptr;
sal_Int32 position = 0; if (pOffset) { // Allocate nCount length to offset argument.
pOffset->realloc( nCount );
p = pOffset->getArray();
position = startPos;
}
// Composition: KA + voice-mark --> GA while (-- nCount > 0) {
currentChar = *src ++; // see http://charts.unicode.org/Web/U3040.html Hiragana (U+3040..U+309F) // see http://charts.unicode.org/Web/U30A0.html Katakana (U+30A0..U+30FF) // 0x3099 COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK // 0x309a COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK // 0x309b KATAKANA-HIRAGANA VOICED SOUND MARK // 0x309c KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK int j = currentChar - 0x3099; // 0x3099, 0x309a, 0x309b, 0x309c ?
if (2 <= j && j <= 3) // 0x309b or 0x309c
j -= 2;
if (0 <= j && j <= 1) { // 0 addresses a code point regarding 0x3099 or 0x309b (voiced sound mark), // 1 is 0x309a or 0x309c (semi-voiced sound mark) int i = int(previousChar - 0x3040); // i acts as an index of array bool bCompose = false;
if (0 <= i && i <= (0x30ff - 0x3040) && composition_table[i][j])
bCompose = true;
// not to use combined KATAKANA LETTER VU if ( previousChar == 0x30a6 && (nFlags & WIDTHFOLDING_DONT_USE_COMBINED_VU) )
bCompose = false;
if( bCompose ){ if (pOffset) {
position ++;
*p ++ = position ++;
}
*dst ++ = composition_table[i][j];
previousChar = *src ++;
nCount --; continue;
}
} if (pOffset)
*p ++ = position ++;
*dst ++ = previousChar;
previousChar = currentChar;
}
if (nCount == 0) { if (pOffset)
*p = position;
*dst ++ = previousChar;
}
*dst = u'\0';
newStr->length = sal_Int32(dst - newStr->buffer);
} if (pOffset)
pOffset->realloc(newStr->length); return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
}
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