mirror of
https://github.com/crystalidea/qt6windows7.git
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90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
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// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#ifndef QT_TESTS_SHARED_LOCALE_CHANGE_H
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#define QT_TESTS_SHARED_LOCALE_CHANGE_H
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#include <qglobal.h>
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#include <QtCore/QByteArray>
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#include <QtCore/QLocale>
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#include <private/qlocale_p.h>
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#include <locale.h>
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namespace QTestLocaleChange {
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QLocale resetSystemLocale()
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{
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#ifndef QT_NO_SYSTEMLOCALE
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{ // Transient instance marks system locale data as stale:
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QSystemLocale dummy;
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} // Now we can reinitialize:
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#endif
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return QLocale::system();
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}
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class TransientLocale
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{
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const int m_category;
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const QByteArray m_prior;
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const bool m_didSet;
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#if !defined(QT_NO_SYSTEMLOCALE) && defined(Q_OS_UNIX) \
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&& (!defined(Q_OS_DARWIN) || defined(Q_OS_NACL))
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#define TRANSIENT_ENV
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// Unix system locale consults environment variables, so we need to set
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// the appropriate one, too.
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const QByteArray m_envVar, m_envPrior;
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const bool m_envSet;
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static QByteArray categoryToEnv(int category)
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{
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switch (category) {
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#define CASE(cat) case cat: return #cat
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CASE(LC_ALL); CASE(LC_NUMERIC); CASE(LC_TIME); CASE(LC_MONETARY);
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CASE(LC_MESSAGES); CASE(LC_COLLATE);
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#ifdef LC_MEASUREMENT
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CASE(LC_MEASUREMENT);
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#endif
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#undef CASE
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// Nothing in our code pays attention to any other LC_*
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default:
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Q_UNREACHABLE();
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qFatal("You need to add a case for this category");
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}
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}
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#endif // TRANSIENT_ENV
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public:
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TransientLocale(int category, const char *locale)
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: m_category(category),
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m_prior(setlocale(category, nullptr)),
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// That return value may be stomped by this later call, so we copy
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// it to a QByteArray for safe keeping.
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m_didSet(setlocale(category, locale) != nullptr)
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#ifdef TRANSIENT_ENV
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, m_envVar(categoryToEnv(category)),
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m_envPrior(qgetenv(m_envVar.constData())),
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m_envSet(qputenv(m_envVar.constData(), locale))
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#endif
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{
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resetSystemLocale();
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}
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~TransientLocale()
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{
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#ifdef TRANSIENT_ENV
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if (m_envSet) {
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if (m_envPrior.isEmpty())
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qunsetenv(m_envVar.constData());
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else
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qputenv(m_envVar.constData(), m_envPrior);
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}
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#endif
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if (m_prior.size())
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setlocale(m_category, m_prior.constData());
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resetSystemLocale();
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}
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#undef TRANSIENT_ENV
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bool isValid() const { return m_didSet; }
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};
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}
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#endif // QT_TESTS_SHARED_LOCALE_CHANGE_H
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