97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
#ifndef QT_UTILITIES_COMPAT_H
|
|
#define QT_UTILITIES_COMPAT_H
|
|
|
|
#include "../global.h"
|
|
|
|
#include <c++utilities/misc/traits.h>
|
|
|
|
#include <QtGlobal>
|
|
|
|
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
|
|
#define QT_UTILITIES_USE_Q_STRING_VIEW
|
|
#endif
|
|
// note: QStringView has been available since Qt 5.10 but for a consistent ABI/API regardless which
|
|
// Qt 5.x version is used it makes sense to stick to QStringRef when using Qt 5.
|
|
|
|
#ifdef QT_UTILITIES_USE_Q_STRING_VIEW
|
|
#include <QStringView>
|
|
#else
|
|
#include <QStringRef>
|
|
#endif
|
|
|
|
namespace QtUtilities {
|
|
|
|
using Utf16CharType =
|
|
#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
|
|
char16_t
|
|
#else
|
|
ushort
|
|
#endif
|
|
;
|
|
|
|
using StringView =
|
|
#ifdef QT_UTILITIES_USE_Q_STRING_VIEW
|
|
QStringView
|
|
#else
|
|
QStringRef
|
|
#endif
|
|
;
|
|
|
|
/*!
|
|
* \brief Makes either a QStringView or a QStringRef depending on the Qt version.
|
|
*/
|
|
inline StringView makeStringView(const QString &str)
|
|
{
|
|
return StringView(
|
|
#ifndef QT_UTILITIES_USE_Q_STRING_VIEW
|
|
&
|
|
#endif
|
|
str);
|
|
}
|
|
|
|
/*!
|
|
* \brief Makes either a QStringView or a QStringRef depending on the Qt version, applying "mid()" parameters.
|
|
*/
|
|
template <typename PosType1, typename PosType2 = PosType1,
|
|
CppUtilities::Traits::EnableIf<std::is_integral<PosType1>, std::is_signed<PosType1>, std::is_integral<PosType2>, std::is_signed<PosType2>>
|
|
* = nullptr>
|
|
inline StringView midRef(const QString &str, PosType1 pos, PosType2 n = -1)
|
|
{
|
|
#ifdef QT_UTILITIES_USE_Q_STRING_VIEW
|
|
return QStringView(str).mid(pos, n);
|
|
#else
|
|
return str.midRef(pos, n);
|
|
#endif
|
|
}
|
|
|
|
/*!
|
|
* \brief Splits \a str into QStringViews, QStringRefs or QStrings depending on the Qt version.
|
|
*/
|
|
template <class... SplitArgs> inline auto splitRef(const QString &str, SplitArgs &&...args)
|
|
{
|
|
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
|
|
return QStringView(str).split(std::forward<SplitArgs>(args)...);
|
|
#elif QT_VERSION >= QT_VERSION_CHECK(5, 4, 0)
|
|
return str.splitRef(std::forward<SplitArgs>(args)...);
|
|
#else
|
|
return str.split(std::forward<SplitArgs>(args)...);
|
|
#endif
|
|
}
|
|
|
|
} // namespace QtUtilities
|
|
|
|
#if (QT_VERSION < QT_VERSION_CHECK(5, 10, 0))
|
|
QT_BEGIN_NAMESPACE
|
|
/*!
|
|
* \brief Provides a fallback for qEnvironmentVariable() when using old Qt versions.
|
|
*/
|
|
inline QString qEnvironmentVariable(const char *varName, const QString &defaultValue)
|
|
{
|
|
const auto val = qgetenv(varName);
|
|
return !val.isEmpty() ? QString::fromLocal8Bit(val) : defaultValue;
|
|
}
|
|
QT_END_NAMESPACE
|
|
#endif
|
|
|
|
#endif // QT_UTILITIES_COMPAT_H
|