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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 <breakit.hxx>
#include <swtypes.hxx>
#include <com/sun/star/i18n/ScriptType.hpp>
#include <com/sun/star/i18n/CharacterIteratorMode.hpp>
#include <com/sun/star/i18n/BreakIterator.hpp>
#include <svl/languageoptions.hxx>
#include <unicode/uchar.h>
#include <unotools/localedatawrapper.hxx>
#include <algorithm>
using namespace com::sun::star;
SwBreakIt* g_pBreakIt = nullptr;
void SwBreakIt::Create_( const uno::Reference<uno::XComponentContext> & rxContext )
{
delete g_pBreakIt;
g_pBreakIt = new SwBreakIt( rxContext );
}
void SwBreakIt::Delete_()
{
delete g_pBreakIt;
g_pBreakIt = nullptr;
}
SwBreakIt * SwBreakIt::Get()
{
return g_pBreakIt;
}
SwBreakIt::SwBreakIt( const uno::Reference<uno::XComponentContext> & rxContext )
: m_xContext(rxContext)
, m_xBreak(i18n::BreakIterator::create(m_xContext))
, m_aForbiddenLang(LANGUAGE_DONTKNOW)
{
}
void SwBreakIt::GetLocale_( const LanguageType aLang )
{
if (m_xLanguageTag)
m_xLanguageTag->reset(aLang);
else
m_xLanguageTag.reset(new LanguageTag(aLang));
}
void SwBreakIt::GetLocale_( const LanguageTag& rLanguageTag )
{
if (m_xLanguageTag)
*m_xLanguageTag = rLanguageTag;
else
m_xLanguageTag.reset(new LanguageTag(rLanguageTag));
}
void SwBreakIt::GetForbidden_( const LanguageType aLang )
{
LocaleDataWrapper aWrap(m_xContext, GetLanguageTag(aLang));
m_aForbiddenLang = aLang;
m_xForbidden.reset(new i18n::ForbiddenCharacters(aWrap.getForbiddenCharacters()));
}
sal_uInt16 SwBreakIt::GetRealScriptOfText( const OUString& rText, sal_Int32 nPos ) const
{
sal_uInt16 nScript = i18n::ScriptType::WEAK;
if (!rText.isEmpty())
{
if( nPos && nPos == rText.getLength() )
--nPos;
else if( nPos < 0)
nPos = 0;
nScript = m_xBreak->getScriptType(rText, nPos);
sal_Int32 nChgPos = 0;
if (i18n::ScriptType::WEAK == nScript && nPos >= 0 && nPos + 1 < rText.getLength())
{
// A weak character followed by a mark may be meant to combine with
// the mark, so prefer the following character's script
switch (u_charType(rText[nPos + 1]))
{
case U_NON_SPACING_MARK:
case U_ENCLOSING_MARK:
case U_COMBINING_SPACING_MARK:
nScript = m_xBreak->getScriptType(rText, nPos+1);
break;
}
}
if( i18n::ScriptType::WEAK == nScript && nPos )
{
nChgPos = m_xBreak->beginOfScript(rText, nPos, nScript);
if( 0 < nChgPos )
nScript = m_xBreak->getScriptType(rText, nChgPos-1);
}
if( i18n::ScriptType::WEAK == nScript )
{
nChgPos = m_xBreak->endOfScript(rText, nPos, nScript);
if( rText.getLength() > nChgPos && 0 <= nChgPos )
nScript = m_xBreak->getScriptType(rText, nChgPos);
}
}
if( i18n::ScriptType::WEAK == nScript )
nScript = SvtLanguageOptions::GetI18NScriptTypeOfLanguage( GetAppLanguage() );
return nScript;
}
SvtScriptType SwBreakIt::GetAllScriptsOfText( const OUString& rText ) const
{
const SvtScriptType coAllScripts = SvtScriptType::LATIN |
SvtScriptType::ASIAN |
SvtScriptType::COMPLEX;
SvtScriptType nRet = SvtScriptType::NONE;
sal_uInt16 nScript = 0;
if (!rText.isEmpty())
{
for( sal_Int32 n = 0, nEnd = rText.getLength(); n < nEnd;
n = m_xBreak->endOfScript(rText, n, nScript) )
{
nScript = m_xBreak->getScriptType(rText, n);
switch( nScript )
{
case i18n::ScriptType::LATIN: nRet |= SvtScriptType::LATIN; break;
case i18n::ScriptType::ASIAN: nRet |= SvtScriptType::ASIAN; break;
case i18n::ScriptType::COMPLEX: nRet |= SvtScriptType::COMPLEX; break;
case i18n::ScriptType::WEAK:
if( nRet == SvtScriptType::NONE )
nRet |= coAllScripts;
break;
}
if( coAllScripts == nRet )
break;
}
}
return nRet;
}
sal_Int32 SwBreakIt::getGraphemeCount(const OUString& rText,
sal_Int32 nStart, sal_Int32 nEnd) const
{
sal_Int32 nGraphemeCount = 0;
sal_Int32 nCurPos = std::max(static_cast<sal_Int32>(0), nStart);
while (nCurPos < nEnd)
{
// fdo#49208 cheat and assume that nothing can combine with a space
// to form a single grapheme
if (rText[nCurPos] == ' ')
{
++nCurPos;
}
else
{
sal_Int32 nCount2 = 1;
nCurPos = m_xBreak->nextCharacters(rText, nCurPos, lang::Locale(),
i18n::CharacterIteratorMode::SKIPCELL, nCount2, nCount2);
}
++nGraphemeCount;
}
return nGraphemeCount;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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