qt5base-lts/tests/shared/localechange.h
Thiago Macieira c9f6678fb4 tst_qstring: properly fix the build when LC_MEASUREMENTS is not defined
Instead of proxy-testing for the OS, test for the thing you're going to
use. Fixes the build on FreeBSD.

Pick-to: 6.3
Change-Id: Ibf4acec0f166495998f7fffd16d693df09871492
Reviewed-by: Pasi Petäjäjärvi <pasi.petajajarvi@qt.io>
Reviewed-by: Tatiana Borisova <tatiana.borisova@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2022-02-24 15:45:53 -08:00

115 lines
3.8 KiB
C++

/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#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