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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#ifndef QT_TESTS_SHARED_LOCALE_CHANGE_H
#define QT_TESTS_SHARED_LOCALE_CHANGE_H
#include <qglobal.h>
#include <QtCore/QByteArray>
#include <QtCore/QLocale>
#include <private/qlocale_p.h>
#include <locale.h>
namespace QTestLocaleChange {
QLocale resetSystemLocale()
{
#ifndef QT_NO_SYSTEMLOCALE
{ // Transient instance marks system locale data as stale:
QSystemLocale dummy;
} // Now we can reinitialize:
#endif
return QLocale::system();
}
class TransientLocale
{
const int m_category;
const QByteArray m_prior;
const bool m_didSet;
#if !defined(QT_NO_SYSTEMLOCALE) && defined(Q_OS_UNIX) \
&& (!defined(Q_OS_DARWIN) || defined(Q_OS_NACL))
#define TRANSIENT_ENV
// Unix system locale consults environment variables, so we need to set
// the appropriate one, too.
const QByteArray m_envVar, m_envPrior;
const bool m_envSet;
static QByteArray categoryToEnv(int category)
{
switch (category) {
#define CASE(cat) case cat: return #cat
CASE(LC_ALL); CASE(LC_NUMERIC); CASE(LC_TIME); CASE(LC_MONETARY);
CASE(LC_MESSAGES); CASE(LC_COLLATE);
#ifdef LC_MEASUREMENT
CASE(LC_MEASUREMENT);
#endif
#undef CASE
// Nothing in our code pays attention to any other LC_*
default:
Q_UNREACHABLE();
qFatal("You need to add a case for this category");
}
}
#endif // TRANSIENT_ENV
public:
TransientLocale(int category, const char *locale)
: m_category(category),
m_prior(setlocale(category, nullptr)),
// That return value may be stomped by this later call, so we copy
// it to a QByteArray for safe keeping.
m_didSet(setlocale(category, locale) != nullptr)
#ifdef TRANSIENT_ENV
, m_envVar(categoryToEnv(category)),
m_envPrior(qgetenv(m_envVar.constData())),
m_envSet(qputenv(m_envVar.constData(), locale))
#endif
{
resetSystemLocale();
}
~TransientLocale()
{
#ifdef TRANSIENT_ENV
if (m_envSet) {
if (m_envPrior.isEmpty())
qunsetenv(m_envVar.constData());
else
qputenv(m_envVar.constData(), m_envPrior);
}
#endif
if (m_prior.size())
setlocale(m_category, m_prior.constData());
resetSystemLocale();
}
#undef TRANSIENT_ENV
bool isValid() const { return m_didSet; }
};
}
#endif // QT_TESTS_SHARED_LOCALE_CHANGE_H
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