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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 <sal/config.h>
#include <string_view>
#include <com/sun/star/container/XNameAccess.hpp>
#include <com/sun/star/i18n/DirectionProperty.hpp>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/Any.h>
#include <i18nlangtag/lang.h>
#include <i18nlangtag/mslangid.hxx>
#include <i18nlangtag/languagetag.hxx>
#include <i18nlangtag/languagetagicu.hxx>
#include <sal/log.hxx>
#include <vcl/svapp.hxx>
#include <vcl/settings.hxx>
#include <svtools/svtresid.hxx>
#include <svtools/langtab.hxx>
#include <unotools/syslocale.hxx>
#include <unotools/charclass.hxx>
#include <tools/resary.hxx>
#include <officecfg/VCL.hxx>
#include <langtab.hrc>
using namespace ::com::sun::star;
namespace {
class SvtLanguageTableImpl
{
private:
std::vector<std::pair<OUString, LanguageType>> m_aStrings;
public:
SvtLanguageTableImpl();
bool HasType( const LanguageType eType ) const;
OUString GetString( const LanguageType eType ) const;
LanguageType GetType( std::u16string_view rStr ) const;
sal_uInt32 GetEntryCount() const;
LanguageType GetTypeAtIndex( sal_uInt32 nIndex ) const;
sal_uInt32 AddItem(const OUString& rLanguage, const LanguageType eType)
{
m_aStrings.emplace_back(rLanguage, eType);
return m_aStrings.size();
}
LanguageType GetValue(sal_uInt32 nIndex) const
{
return (nIndex < m_aStrings.size()) ? m_aStrings[nIndex].second : LANGUAGE_DONTKNOW;
}
sal_uInt32 FindIndex(LanguageType nValue) const
{
const size_t nItems = m_aStrings.size();
for (size_t i = 0; i < nItems; ++i)
{
if (m_aStrings[i].second == nValue)
return i;
}
return RESARRAY_INDEX_NOTFOUND;
}
};
struct theLanguageTable : public rtl::Static< SvtLanguageTableImpl, theLanguageTable > {};
}
OUString ApplyLreOrRleEmbedding( const OUString &rText )
{
const sal_Int32 nLen = rText.getLength();
if (nLen == 0)
return OUString();
constexpr sal_Unicode cLRE_Embedding = 0x202A; // the start char of an LRE embedding
constexpr sal_Unicode cRLE_Embedding = 0x202B; // the start char of an RLE embedding
constexpr sal_Unicode cPopDirectionalFormat = 0x202C; // the unicode PDF (POP_DIRECTIONAL_FORMAT) char that terminates an LRE/RLE embedding
// check if there are already embedding characters at the strings start
// if so change nothing
const sal_Unicode cChar = rText[0];
if (cChar == cLRE_Embedding || cChar == cRLE_Embedding)
return rText;
// since we only call the function getCharacterDirection
// it does not matter which locale the CharClass is for.
// Thus we can readily make use of SvtSysLocale::GetCharClass()
// which should come at no cost...
SvtSysLocale aSysLocale;
const CharClass &rCharClass = aSysLocale.GetCharClass();
// we should look for the first non-neutral LTR or RTL character
// and use that to determine the embedding of the whole text...
// Thus we can avoid to check every character of the text.
bool bFound = false;
bool bIsRtlText = false;
for (sal_Int32 i = 0; i < nLen && !bFound; ++i)
{
i18n::DirectionProperty nDirection = rCharClass.getCharacterDirection( rText, i );
switch (nDirection)
{
case i18n::DirectionProperty_LEFT_TO_RIGHT :
case i18n::DirectionProperty_LEFT_TO_RIGHT_EMBEDDING :
case i18n::DirectionProperty_LEFT_TO_RIGHT_OVERRIDE :
case i18n::DirectionProperty_EUROPEAN_NUMBER :
case i18n::DirectionProperty_ARABIC_NUMBER : // yes! arabic numbers are written from left to right
{
bIsRtlText = false;
bFound = true;
break;
}
case i18n::DirectionProperty_RIGHT_TO_LEFT :
case i18n::DirectionProperty_RIGHT_TO_LEFT_ARABIC :
case i18n::DirectionProperty_RIGHT_TO_LEFT_EMBEDDING :
case i18n::DirectionProperty_RIGHT_TO_LEFT_OVERRIDE :
{
bIsRtlText = true;
bFound = true;
break;
}
default:
{
// nothing to be done, character is considered to be neutral we need to look further ...
}
}
}
sal_Unicode cStart = cLRE_Embedding; // default is to use LRE embedding characters
if (bIsRtlText)
cStart = cRLE_Embedding; // then use RLE embedding
// add embedding start and end chars to the text if the direction could be determined
OUString aRes( rText );
if (bFound)
{
aRes = OUStringChar(cStart) + aRes
+ OUStringChar(cPopDirectionalFormat);
}
return aRes;
}
static OUString lcl_getDescription( const LanguageTag& rTag )
{
OUString aStr( LanguageTagIcu::getDisplayName( rTag, Application::GetSettings().GetUILanguageTag()));
if (aStr.isEmpty() || aStr == rTag.getBcp47())
{
// Place in curly brackets, so all on-the-fly tags without display name
// are grouped together at the top of a listbox (but behind the
// "[None]" entry), and not sprinkled all over, which alphabetically
// might make sense in an English UI only anyway. Also a visual
// indicator that it is a programmatical name, IMHO.
return OUString::Concat("{") + aStr + "}";
}
else
{
// The ICU display name might be identical to a predefined name or even
// to another tag's ICU name; clarify that this is a generated name and
// append the language tag in curly brackets to distinguish.
return aStr + " {" + rTag.getBcp47() + "}";
}
}
SvtLanguageTableImpl::SvtLanguageTableImpl()
{
for (size_t i = 0; i < SAL_N_ELEMENTS(STR_ARR_SVT_LANGUAGE_TABLE); ++i)
{
m_aStrings.emplace_back(SvtResId(STR_ARR_SVT_LANGUAGE_TABLE[i].first), STR_ARR_SVT_LANGUAGE_TABLE[i].second);
}
auto xNA = officecfg::VCL::ExtraLanguages::get();
const uno::Sequence <OUString> rElementNames = xNA->getElementNames();
for (const OUString& rBcp47 : rElementNames)
{
OUString aName;
sal_Int32 nType = 0;
uno::Reference <container::XNameAccess> xNB;
xNA->getByName(rBcp47) >>= xNB;
bool bSuccess = (xNB->getByName("Name") >>= aName) &&
(xNB->getByName("ScriptType") >>= nType);
if (bSuccess)
{
LanguageTag aLang(rBcp47);
LanguageType nLangType = aLang.getLanguageType();
if (nType <= sal_Int32(LanguageTag::ScriptType::RTL) && nType > sal_Int32(LanguageTag::ScriptType::UNKNOWN))
aLang.setScriptType(LanguageTag::ScriptType(nType));
sal_uInt32 nPos = FindIndex(nLangType);
if (nPos == RESARRAY_INDEX_NOTFOUND)
AddItem((aName.isEmpty() ? lcl_getDescription(aLang) : aName), nLangType);
}
}
}
bool SvtLanguageTableImpl::HasType( const LanguageType eType ) const
{
LanguageType eLang = MsLangId::getReplacementForObsoleteLanguage( eType );
sal_uInt32 nPos = FindIndex(eLang);
return RESARRAY_INDEX_NOTFOUND != nPos && nPos < GetEntryCount();
}
bool SvtLanguageTable::HasLanguageType( const LanguageType eType )
{
return theLanguageTable::get().HasType( eType );
}
OUString SvtLanguageTableImpl::GetString( const LanguageType eType ) const
{
const LanguageType nLang = MsLangId::getReplacementForObsoleteLanguage( eType);
const sal_uInt32 nPos = (eType == LANGUAGE_PROCESS_OR_USER_DEFAULT ?
FindIndex(LANGUAGE_SYSTEM) : FindIndex( nLang));
if ( RESARRAY_INDEX_NOTFOUND != nPos && nPos < GetEntryCount() )
return m_aStrings[nPos].first;
// Obtain from ICU, or a geeky but usable-in-a-pinch lang-tag.
OUString sLangTag( lcl_getDescription( LanguageTag(nLang)));
SAL_WARN("svtools.misc", "Language: 0x"
<< std::hex << nLang
<< " with unknown name, so returning lang-tag of: "
<< sLangTag);
// And add it to the table if it is an on-the-fly-id, which it usually is,
// so it is available in all subsequent language boxes.
if (LanguageTag::isOnTheFlyID( nLang))
const_cast<SvtLanguageTableImpl*>(this)->AddItem( sLangTag, nLang);
return sLangTag;
}
OUString SvtLanguageTable::GetLanguageString( const LanguageType eType )
{
return theLanguageTable::get().GetString( eType );
}
LanguageType SvtLanguageTableImpl::GetType( std::u16string_view rStr ) const
{
LanguageType eType = LANGUAGE_DONTKNOW;
sal_uInt32 nCount = GetEntryCount();
for ( sal_uInt32 i = 0; i < nCount; ++i )
{
if (m_aStrings[i].first == rStr)
{
eType = GetValue(i);
break;
}
}
return eType;
}
LanguageType SvtLanguageTable::GetLanguageType( std::u16string_view rStr )
{
return theLanguageTable::get().GetType( rStr );
}
sal_uInt32 SvtLanguageTableImpl::GetEntryCount() const
{
return m_aStrings.size();
}
sal_uInt32 SvtLanguageTable::GetLanguageEntryCount()
{
return theLanguageTable::get().GetEntryCount();
}
LanguageType SvtLanguageTableImpl::GetTypeAtIndex( sal_uInt32 nIndex ) const
{
LanguageType nType = LANGUAGE_DONTKNOW;
if (nIndex < GetEntryCount())
nType = GetValue(nIndex);
return nType;
}
LanguageType SvtLanguageTable::GetLanguageTypeAtIndex( sal_uInt32 nIndex )
{
return theLanguageTable::get().GetTypeAtIndex( nIndex);
}
sal_uInt32 SvtLanguageTable::AddLanguageTag( const LanguageTag& rLanguageTag )
{
return theLanguageTable::get().AddItem( lcl_getDescription(rLanguageTag),
rLanguageTag.getLanguageType());
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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