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Add Qt libs and headers
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√(noham)²
177
paho-mqtt3as-proxy/Qt/include/QtCore/qcalendar.h
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177
paho-mqtt3as-proxy/Qt/include/QtCore/qcalendar.h
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// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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#ifndef QCALENDAR_H
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#define QCALENDAR_H
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#include <limits>
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#include <QtCore/qglobal.h>
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#include <QtCore/qlocale.h>
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#include <QtCore/qstring.h>
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#include <QtCore/qstringview.h>
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/* Suggested enum names for other calendars known to CLDR (v33.1)
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Not yet implemented - see QCalendar::System - contributions welcome:
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* Buddhist -- Thai Buddhist, to be specific
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* Chinese
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* Coptic
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* Dangi -- Korean
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* Ethiopic (Amete Mihret - epoch approx. 8 C.E.)
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* EthiopicAmeteAlem (Amete Alem - epoch approx. 5493 B.C.E; data from
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type="ethiopic-amete-alem", an alias for type="ethioaa")
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* Hebrew
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* Indian -- National
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* Islamic -- Based on astronomical observations, not predictions, so hard to
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implement. CLDR's data for type="islamic" apply, unless overridden, to the
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other Islamic calendar variants, i.e. IslamicCivil, above, and the three
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following. See QHijriCalendar, a common base to provide that data.
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* IslamicTabular -- tabular, astronomical epoch (same as IslamicCivil, except
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for epoch), CLDR type="islamic-tbla"
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* Saudi -- Saudi Arabia, sighting; CLDR type="islamic-rgsa"
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* UmmAlQura -- Umm al-Qura, Saudi Arabia, calculated; CLDR type="islamic-umalqura"
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* Iso8601 -- as Gregorian, but treating ISO 8601 weeks as "months"
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* Japanese -- Imperial calendar
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* Minguo -- Republic of China, Taiwan; CLDR type="roc"
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See:
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http://www.unicode.org/repos/cldr/tags/latest/common/bcp47/calendar.xml
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These can potentially be supported, as features, using CLDR's data; any
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others shall need hand-crafted localization data; it would probably be best
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to do that by contributing data for them to CLDR.
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*/
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QT_BEGIN_NAMESPACE
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class QCalendarBackend;
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class QDate;
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class Q_CORE_EXPORT QCalendar
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{
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Q_GADGET
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public:
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// (Extra parentheses to suppress bogus reading of min() as a macro.)
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enum : int { Unspecified = (std::numeric_limits<int>::min)() };
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struct YearMonthDay
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{
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YearMonthDay() = default;
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YearMonthDay(int y, int m = 1, int d = 1) : year(y), month(m), day(d) {}
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bool isValid() const
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{ return month != Unspecified && day != Unspecified; }
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// (The first year supported by QDate has year == Unspecified.)
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int year = Unspecified;
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int month = Unspecified;
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int day = Unspecified;
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};
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// Feature (\w+)calendar uses CLDR type="\1" data, except as noted in type="..." comments below
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enum class System
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{
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Gregorian, // CLDR: type = "gregory", alias = "gregorian"
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#ifndef QT_BOOTSTRAPPED
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Julian = 8,
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Milankovic = 9,
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#endif // These are Roman-based, so share Gregorian's CLDR data
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// Feature-controlled calendars:
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#if QT_CONFIG(jalalicalendar) // type="persian"
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Jalali = 10,
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#endif
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#if QT_CONFIG(islamiccivilcalendar) // type="islamic-civil", uses data from type="islamic"
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IslamicCivil = 11,
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// tabular, civil epoch
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// 30 year cycle, leap on 2, 5, 7, 10, 13, 16, 18, 21, 24, 26 and 29
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// (Other variants: 2, 5, 8, (10|11), 13, 16, 19, 21, 24, 27 and 29.)
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#endif
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Last = 11, // Highest number of any above
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User = -1
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};
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// New entries must be added to the \enum doc in qcalendar.cpp and
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// handled in QCalendarBackend::fromEnum()
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Q_ENUM(System)
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class SystemId
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{
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size_t id;
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friend class QCalendarBackend;
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constexpr bool isInEnum() const { return id <= size_t(QCalendar::System::Last); }
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constexpr explicit SystemId(QCalendar::System e) : id(size_t(e)) { }
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constexpr explicit SystemId(size_t i) : id(i) { }
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public:
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constexpr SystemId() : id(~size_t(0)) {}
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constexpr size_t index() const noexcept { return id; }
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constexpr bool isValid() const noexcept { return ~id; }
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};
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explicit QCalendar(); // Gregorian, optimised
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explicit QCalendar(System system);
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#if QT_CORE_REMOVED_SINCE(6, 4)
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explicit QCalendar(QLatin1StringView name);
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explicit QCalendar(QStringView name);
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#endif
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explicit QCalendar(QAnyStringView name);
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explicit QCalendar(SystemId id);
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// QCalendar is a trivially copyable value type.
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bool isValid() const { return d_ptr != nullptr; }
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// Date queries:
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int daysInMonth(int month, int year = Unspecified) const;
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int daysInYear(int year) const;
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int monthsInYear(int year) const;
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bool isDateValid(int year, int month, int day) const;
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// Leap years:
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bool isLeapYear(int year) const;
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// Properties of the calendar:
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bool isGregorian() const;
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bool isLunar() const;
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bool isLuniSolar() const;
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bool isSolar() const;
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bool isProleptic() const;
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bool hasYearZero() const;
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int maximumDaysInMonth() const;
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int minimumDaysInMonth() const;
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int maximumMonthsInYear() const;
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QString name() const;
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// QDate conversions:
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QDate dateFromParts(int year, int month, int day) const;
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QDate dateFromParts(const YearMonthDay &parts) const;
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YearMonthDay partsFromDate(QDate date) const;
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int dayOfWeek(QDate date) const;
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// Month and week-day names (as in QLocale):
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QString monthName(const QLocale &locale, int month, int year = Unspecified,
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QLocale::FormatType format=QLocale::LongFormat) const;
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QString standaloneMonthName(const QLocale &locale, int month, int year = Unspecified,
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QLocale::FormatType format = QLocale::LongFormat) const;
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QString weekDayName(const QLocale &locale, int day,
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QLocale::FormatType format = QLocale::LongFormat) const;
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QString standaloneWeekDayName(const QLocale &locale, int day,
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QLocale::FormatType format=QLocale::LongFormat) const;
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// Formatting of date-times:
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QString dateTimeToString(QStringView format, const QDateTime &datetime,
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QDate dateOnly, QTime timeOnly,
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const QLocale &locale) const;
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// What's available ?
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static QStringList availableCalendars();
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private:
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// Always supplied by QCalendarBackend and expected to be a singleton
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// Note that the calendar registry destroys all backends when it is itself
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// destroyed. The code should check if the registry is destroyed before
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// dereferencing this pointer.
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const QCalendarBackend *d_ptr;
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};
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QT_END_NAMESPACE
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#endif // QCALENDAR_H
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