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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: widthfolding.cxx,v $
*
* $Revision: 1.5 $
*
* last change: $Author: rt $ $Date: 2005-09-07 17:42:08 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
// prevent internal compiler error with MSVC6SP3
#include <utility>
#include <i18nutil/widthfolding.hxx>
#include <i18nutil/x_rtl_ustring.h>
#include "widthfolding_data.h"
using namespace com::sun::star::uno;
using namespace rtl;
namespace com { namespace sun { namespace star { namespace i18n {
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 >& offset, sal_Bool useOffset )
{
// Create a string buffer which can hold nCount * 2 + 1 characters.
// Its size may become double of nCount.
rtl_uString * newStr;
x_rtl_uString_new_WithLength( &newStr, nCount * 2 ); // defined in x_rtl_ustring.h The reference count is 0 now.
sal_Int32 *p = NULL;
sal_Int32 position = 0;
if (useOffset) {
// Allocate double of nCount length to offset argument.
offset.realloc( nCount * 2 );
p = offset.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 (useOffset) {
*p ++ = position;
*p ++ = position ++;
}
continue;
}
}
*dst ++ = c;
if (useOffset)
*p ++ = position ++;
}
*dst = (sal_Unicode) 0;
newStr->length = sal_Int32(dst - newStr->buffer);
if (useOffset)
offset.realloc(newStr->length);
return OUString( newStr ); // defined in rtl/usrting. The reference count is increased from 0 to 1.
}
oneToOneMapping& widthfolding::getfull2halfTable(void)
{
static oneToOneMapping table(full2half, sizeof(full2half));
table.makeIndex();
return table;
}
/**
* 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 >& offset, sal_Bool useOffset )
{
// Create a string buffer which can hold nCount + 1 characters.
// Its size may become equal to nCount or smaller.
// The reference count is 0 now.
rtl_uString * newStr = x_rtl_uString_new_WithLength( nCount ); // defined in x_rtl_ustring.h
// 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 = NULL;
sal_Int32 position = 0;
if (useOffset) {
// Allocate nCount length to offset argument.
offset.realloc( nCount );
p = offset.getArray();
position = startPos;
}
//
sal_Unicode previousChar = *src ++;
sal_Unicode currentChar;
// 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
int j = currentChar - 0x3099; // 0x3099 or 0x309a ?
if (0 <= j && j <= 1) { // 0 addresses a code point regarding 0x3099, 1 is 0x309a
int i = int(previousChar - 0x3040); // i acts as an index of array
if (0 <= i && i <= (0x30ff - 0x3040) && composition_table[i][j]) {
if (useOffset) {
position ++;
*p ++ = position ++;
}
*dst ++ = composition_table[i][j];
previousChar = *src ++;
nCount --;
continue;
}
}
if (useOffset)
*p ++ = position ++;
*dst ++ = previousChar;
previousChar = currentChar;
}
if (nCount == 0) {
if (useOffset)
*p = position;
*dst ++ = previousChar;
}
*dst = (sal_Unicode) 0;
newStr->length = sal_Int32(dst - newStr->buffer);
}
if (useOffset)
offset.realloc(newStr->length);
return OUString( newStr ); // defined in rtl/usrting. The reference count is increased from 0 to 1.
}
oneToOneMapping& widthfolding::gethalf2fullTable(void)
{
static oneToOneMapping table(half2full, sizeof(half2full));
table.makeIndex();
return table;
}
sal_Unicode widthfolding::getCompositionChar(sal_Unicode c1, sal_Unicode c2)
{
return composition_table[c1 - 0x3040][c2 - 0x3099];
}
} } } }
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