calamares/src/libcalamares/locale/Label.cpp
2021-07-26 11:16:26 +02:00

96 lines
3.0 KiB
C++

/* === This file is part of Calamares - <https://calamares.io> ===
*
* SPDX-FileCopyrightText: 2014-2015 Teo Mrnjavac <teo@kde.org>
* SPDX-FileCopyrightText: 2017-2019 Adriaan de Groot <groot@kde.org>
* SPDX-License-Identifier: GPL-3.0-or-later
*
* Calamares is Free Software: see the License-Identifier above.
*
*
*/
#include "Label.h"
#include <memory>
/** @brief Handle special cases of Calamares language names
*
* If a given @p localeName (e.g. en_US, or sr@latin) has special handling,
* returns a pair of pointers:
* - a pointer to a QLocale; this is the locale to use, or may be @c nullptr
* to indicate that the Qt locale derived from @p localeName is accepatable.
* - a pointer to a QString; this is the native language name to use, or may
* be @c nullptr to indicate that the Qt value is acceptable.
*
* Returns a pair of nullptrs for non-special cases.
*/
static std::pair< QLocale*, QString* >
specialCase( const QString& localeName )
{
if ( localeName == "sr@latin" )
{
static QLocale loc( QLocale::Language::Serbian, QLocale::Script::LatinScript, QLocale::Country::Serbia );
return { &loc, nullptr };
}
if ( localeName == "ca@valencia" )
{
static QString name = QStringLiteral( "Català (València)" );
return { nullptr, &name };
}
return { nullptr, nullptr };
}
namespace CalamaresUtils
{
namespace Locale
{
Label::Label( QObject* parent )
: Label( QString(), LabelFormat::IfNeededWithCountry, parent )
{
}
Label::Label( const QString& locale, LabelFormat format, QObject* parent )
: QObject( parent )
, m_locale( Label::getLocale( locale ) )
, m_localeId( locale.isEmpty() ? m_locale.name() : locale )
{
auto special = specialCase( locale );
QString longFormat = QObject::tr( "%1 (%2)" );
QString languageName = special.second ? *special.second : m_locale.nativeLanguageName();
QString englishName = m_locale.languageToString( m_locale.language() );
if ( languageName.isEmpty() )
{
languageName = QString( "* %1 (%2)" ).arg( locale, englishName );
}
bool needsCountryName = ( format == LabelFormat::AlwaysWithCountry )
|| ( locale.contains( '_' ) && QLocale::countriesForLanguage( m_locale.language() ).count() > 1 );
QString countryName = ( needsCountryName ?
m_locale.nativeCountryName()
: QString() );
m_label = needsCountryName ? longFormat.arg( languageName, countryName ) : languageName;
m_englishLabel = needsCountryName ? longFormat.arg( englishName, QLocale::countryToString( m_locale.country() ) )
: englishName;
}
QLocale
Label::getLocale( const QString& localeName )
{
if ( localeName.isEmpty() )
{
return QLocale();
}
auto special = specialCase( localeName );
return special.first ? *special.first : QLocale( localeName );
}
} // namespace Locale
} // namespace CalamaresUtils