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/* -*- 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 .
*/
#include <com/sun/star/i18n/CharacterIteratorMode.hpp>
#include <breakiterator_ctl.hxx>
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::i18n;
using namespace ::com::sun::star::lang;
namespace i18npool {
/**
* Constructor.
*/
BreakIterator_CTL::BreakIterator_CTL() :
cachedText(),
nextCellIndex( nullptr ),
previousCellIndex( nullptr ),
cellIndexSize( 512 )
{
cBreakIterator = "com.sun.star.i18n.BreakIterator_CTL";
// to improve performance, alloc big enough memory in construct.
nextCellIndex = static_cast<sal_Int32*>(calloc(cellIndexSize, sizeof(sal_Int32)));
previousCellIndex = static_cast<sal_Int32*>(calloc(cellIndexSize, sizeof(sal_Int32)));
}
/**
* Deconstructor.
*/
BreakIterator_CTL::~BreakIterator_CTL()
{
free(nextCellIndex);
free(previousCellIndex);
}
sal_Int32 SAL_CALL BreakIterator_CTL::previousCharacters( const OUString& Text,
sal_Int32 nStartPos, const lang::Locale& rLocale,
sal_Int16 nCharacterIteratorMode, sal_Int32 nCount, sal_Int32& nDone )
{
if (nCharacterIteratorMode == CharacterIteratorMode::SKIPCELL ) {
nDone = 0;
if (nStartPos > 0) { // for others to skip cell.
makeIndex(Text, nStartPos);
if (nextCellIndex[nStartPos-1] == 0) // not a CTL character
return BreakIterator_Unicode::previousCharacters(Text, nStartPos, rLocale,
nCharacterIteratorMode, nCount, nDone);
else while (nCount > 0 && nextCellIndex[nStartPos - 1] > 0) {
nCount--; nDone++;
nStartPos = previousCellIndex[nStartPos - 1];
}
} else
nStartPos = 0;
} else { // for BS to delete one char.
nDone = (nStartPos > nCount) ? nCount : nStartPos;
nStartPos -= nDone;
}
return nStartPos;
}
sal_Int32 SAL_CALL BreakIterator_CTL::nextCharacters(const OUString& Text,
sal_Int32 nStartPos, const lang::Locale& rLocale,
sal_Int16 nCharacterIteratorMode, sal_Int32 nCount, sal_Int32& nDone)
{
sal_Int32 len = Text.getLength();
if (nCharacterIteratorMode == CharacterIteratorMode::SKIPCELL ) {
nDone = 0;
if (nStartPos < len) {
makeIndex(Text, nStartPos);
if (nextCellIndex[nStartPos] == 0) // not a CTL character
return BreakIterator_Unicode::nextCharacters(Text, nStartPos, rLocale,
nCharacterIteratorMode, nCount, nDone);
else while (nCount > 0 && nextCellIndex[nStartPos] > 0) {
nCount--; nDone++;
nStartPos = nextCellIndex[nStartPos];
}
} else
nStartPos = len;
} else {
nDone = (len - nStartPos > nCount) ? nCount : len - nStartPos;
nStartPos += nDone;
}
return nStartPos;
}
// This method should be overwritten by derived language specific class.
void BreakIterator_CTL::makeIndex(const OUString& /*text*/, sal_Int32 /*pos*/)
{
throw RuntimeException();
}
// Make sure line is broken on cell boundary if we implement cell iterator.
LineBreakResults SAL_CALL BreakIterator_CTL::getLineBreak(
const OUString& Text, sal_Int32 nStartPos,
const lang::Locale& rLocale, sal_Int32 nMinBreakPos,
const LineBreakHyphenationOptions& hOptions,
const LineBreakUserOptions& bOptions )
{
LineBreakResults lbr = BreakIterator_Unicode::getLineBreak(Text, nStartPos,
rLocale, nMinBreakPos, hOptions, bOptions );
if (lbr.breakIndex < Text.getLength()) {
makeIndex(Text, lbr.breakIndex);
lbr.breakIndex = previousCellIndex[ lbr.breakIndex ];
}
return lbr;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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