diff options
Diffstat (limited to 'src/corelib/tools/qtimezone.cpp')
| -rw-r--r-- | src/corelib/tools/qtimezone.cpp | 997 |
1 files changed, 0 insertions, 997 deletions
diff --git a/src/corelib/tools/qtimezone.cpp b/src/corelib/tools/qtimezone.cpp deleted file mode 100644 index ef323de14a..0000000000 --- a/src/corelib/tools/qtimezone.cpp +++ /dev/null @@ -1,997 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2013 John Layt <jlayt@kde.org> -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - - -#include "qtimezone.h" -#include "qtimezoneprivate_p.h" - -#include <QtCore/qdatastream.h> -#include <QtCore/qdatetime.h> - -#include <qdebug.h> - -#include <algorithm> - -QT_BEGIN_NAMESPACE - -// Create default time zone using appropriate backend -static QTimeZonePrivate *newBackendTimeZone() -{ -#ifdef QT_NO_SYSTEMLOCALE -#if QT_CONFIG(icu) - return new QIcuTimeZonePrivate(); -#else - return new QUtcTimeZonePrivate(); -#endif -#else -#if defined Q_OS_MAC - return new QMacTimeZonePrivate(); -#elif defined(Q_OS_ANDROID) && !defined(Q_OS_ANDROID_EMBEDDED) - return new QAndroidTimeZonePrivate(); -#elif defined(Q_OS_UNIX) || defined(Q_OS_ANDROID_EMBEDDED) - return new QTzTimeZonePrivate(); -#elif QT_CONFIG(icu) - return new QIcuTimeZonePrivate(); -#elif defined Q_OS_WIN - return new QWinTimeZonePrivate(); -#else - return new QUtcTimeZonePrivate(); -#endif // System Locales -#endif // QT_NO_SYSTEMLOCALE -} - -// Create named time zone using appropriate backend -static QTimeZonePrivate *newBackendTimeZone(const QByteArray &ianaId) -{ -#ifdef QT_NO_SYSTEMLOCALE -#if QT_CONFIG(icu) - return new QIcuTimeZonePrivate(ianaId); -#else - return new QUtcTimeZonePrivate(ianaId); -#endif -#else -#if defined Q_OS_MAC - return new QMacTimeZonePrivate(ianaId); -#elif defined(Q_OS_ANDROID) && !defined(Q_OS_ANDROID_EMBEDDED) - return new QAndroidTimeZonePrivate(ianaId); -#elif defined(Q_OS_UNIX) || defined(Q_OS_ANDROID_EMBEDDED) - return new QTzTimeZonePrivate(ianaId); -#elif QT_CONFIG(icu) - return new QIcuTimeZonePrivate(ianaId); -#elif defined Q_OS_WIN - return new QWinTimeZonePrivate(ianaId); -#else - return new QUtcTimeZonePrivate(ianaId); -#endif // System Locales -#endif // QT_NO_SYSTEMLOCALE -} - -class QTimeZoneSingleton -{ -public: - QTimeZoneSingleton() : backend(newBackendTimeZone()) {} - - // The backend_tz is the tz to use in static methods such as availableTimeZoneIds() and - // isTimeZoneIdAvailable() and to create named IANA time zones. This is usually the host - // system, but may be different if the host resources are insufficient or if - // QT_NO_SYSTEMLOCALE is set. A simple UTC backend is used if no alternative is available. - QSharedDataPointer<QTimeZonePrivate> backend; -}; - -Q_GLOBAL_STATIC(QTimeZoneSingleton, global_tz); - -/*! - \class QTimeZone - \inmodule QtCore - \since 5.2 - - \brief The QTimeZone class converts between UTC and local time in a specific - time zone. - - \threadsafe - - This class provides a stateless calculator for time zone conversions - between UTC and the local time in a specific time zone. By default it uses - the host system time zone data to perform these conversions. - - This class is primarily designed for use in QDateTime; most applications - will not need to access this class directly and should instead use - QDateTime with a Qt::TimeSpec of Qt::TimeZone. - - \note For consistency with QDateTime, QTimeZone does not account for leap - seconds. - - \section1 Remarks - - \section2 IANA Time Zone IDs - - QTimeZone uses the IANA time zone IDs as defined in the IANA Time Zone - Database (http://www.iana.org/time-zones). This is to ensure a standard ID - across all supported platforms. Most platforms support the IANA IDs - and the IANA Database natively, but for Windows a mapping is required to - the native IDs. See below for more details. - - The IANA IDs can and do change on a regular basis, and can vary depending - on how recently the host system data was updated. As such you cannot rely - on any given ID existing on any host system. You must use - availableTimeZoneIds() to determine what IANA IDs are available. - - The IANA IDs and database are also know as the Olson IDs and database, - named after their creator. - - \section2 UTC Offset Time Zones - - A default UTC time zone backend is provided which is always guaranteed to - be available. This provides a set of generic Offset From UTC time zones - in the range UTC-14:00 to UTC+14:00. These time zones can be created - using either the standard ISO format names "UTC+00:00" as listed by - availableTimeZoneIds(), or using the number of offset seconds. - - \section2 Windows Time Zones - - Windows native time zone support is severely limited compared to the - standard IANA TZ Database. Windows time zones cover larger geographic - areas and are thus less accurate in their conversions. They also do not - support as much historic conversion data and so may only be accurate for - the current year. - - QTimeZone uses a conversion table derived form the Unicode CLDR data to map - between IANA IDs and Windows IDs. Depending on your version of Windows - and Qt, this table may not be able to provide a valid conversion, in which - "UTC" will be returned. - - QTimeZone provides a public API to use this conversion table. The Windows ID - used is the Windows Registry Key for the time zone which is also the MS - Exchange EWS ID as well, but is different to the Time Zone Name (TZID) and - COD code used by MS Exchange in versions before 2007. - - \section2 System Time Zone - - QTimeZone does not support any concept of a system or default time zone. - If you require a QDateTime that uses the current system time zone at any - given moment then you should use a Qt::TimeSpec of Qt::LocalTime. - - The method systemTimeZoneId() returns the current system IANA time zone - ID which on Unix-like systems will always be correct. On Windows this ID is - translated from the Windows system ID using an internal translation - table and the user's selected country. As a consequence there is a small - chance any Windows install may have IDs not known by Qt, in which case - "UTC" will be returned. - - Creating a new QTimeZone instance using the system time zone ID will only - produce a fixed named copy of the time zone, it will not change if the - system time zone changes. - - \section2 Time Zone Offsets - - The difference between UTC and the local time in a time zone is expressed - as an offset in seconds from UTC, i.e. the number of seconds to add to UTC - to obtain the local time. The total offset is comprised of two component - parts, the standard time offset and the daylight-saving time offset. The - standard time offset is the number of seconds to add to UTC to obtain - standard time in the time zone. The daylight-saving time offset is the - number of seconds to add to the standard time offset to obtain - daylight-saving time (abbreviated DST and sometimes called "daylight time" - or "summer time") in the time zone. - - Note that the standard and DST offsets for a time zone may change over time - as countries have changed DST laws or even their standard time offset. - - \section2 License - - This class includes data obtained from the CLDR data files under the terms - of the Unicode Data Files and Software License. See - \l{Unicode Common Locale Data Repository (CLDR)} for details. - - \sa QDateTime -*/ - -/*! - \enum QTimeZone::anonymous - - Sane UTC offsets range from -14 to +14 hours. - No known zone > 12 hrs West of Greenwich (Baker Island, USA). - No known zone > 14 hrs East of Greenwich (Kiritimati, Christmas Island, Kiribati). - - \value MinUtcOffsetSecs - -14 * 3600, - - \value MaxUtcOffsetSecs - +14 * 3600 -*/ - -/*! - \enum QTimeZone::TimeType - - The type of time zone time, for example when requesting the name. In time - zones that do not apply DST, all three values may return the same result. - - \value StandardTime - The standard time in a time zone, i.e. when Daylight-Saving is not - in effect. - For example when formatting a display name this will show something - like "Pacific Standard Time". - \value DaylightTime - A time when Daylight-Saving is in effect. - For example when formatting a display name this will show something - like "Pacific daylight-saving time". - \value GenericTime - A time which is not specifically Standard or Daylight-Saving time, - either an unknown time or a neutral form. - For example when formatting a display name this will show something - like "Pacific Time". -*/ - -/*! - \enum QTimeZone::NameType - - The type of time zone name. - - \value DefaultName - The default form of the time zone name, e.g. LongName, ShortName or OffsetName - \value LongName - The long form of the time zone name, e.g. "Central European Time" - \value ShortName - The short form of the time zone name, usually an abbreviation, e.g. "CET" - \value OffsetName - The standard ISO offset form of the time zone name, e.g. "UTC+01:00" -*/ - -/*! - \class QTimeZone::OffsetData - \inmodule QtCore - - The time zone offset data for a given moment in time, i.e. the time zone - offsets and abbreviation to use at that moment in time. - - \list - \li OffsetData::atUtc The datetime of the offset data in UTC time. - \li OffsetData::offsetFromUtc The total offset from UTC in effect at the datetime. - \li OffsetData::standardTimeOffset The standard time offset component of the total offset. - \li OffsetData::daylightTimeOffset The DST offset component of the total offset. - \li OffsetData::abbreviation The abbreviation in effect at the datetime. - \endlist - - For example, for time zone "Europe/Berlin" the OffsetDate in standard and DST might be: - - \list - \li atUtc = QDateTime(QDate(2013, 1, 1), QTime(0, 0, 0), Qt::UTC) - \li offsetFromUtc = 3600 - \li standardTimeOffset = 3600 - \li daylightTimeOffset = 0 - \li abbreviation = "CET" - \endlist - - \list - \li atUtc = QDateTime(QDate(2013, 6, 1), QTime(0, 0, 0), Qt::UTC) - \li offsetFromUtc = 7200 - \li standardTimeOffset = 3600 - \li daylightTimeOffset = 3600 - \li abbreviation = "CEST" - \endlist -*/ - -/*! - \typedef QTimeZone::OffsetDataList - - Synonym for QVector<OffsetData>. -*/ - -/*! - Create a null/invalid time zone instance. -*/ - -QTimeZone::QTimeZone() noexcept - : d(0) -{ -} - -/*! - Creates an instance of the requested time zone \a ianaId. - - The ID must be one of the available system IDs otherwise an invalid - time zone will be returned. - - \sa availableTimeZoneIds() -*/ - -QTimeZone::QTimeZone(const QByteArray &ianaId) -{ - // Try and see if it's a valid UTC offset ID, just as quick to try create as look-up - d = new QUtcTimeZonePrivate(ianaId); - // If not a valid UTC offset ID then try create it with the system backend - // Relies on backend not creating valid tz with invalid name - if (!d->isValid()) - d = newBackendTimeZone(ianaId); -} - -/*! - Creates an instance of a time zone with the requested Offset from UTC of - \a offsetSeconds. - - The \a offsetSeconds from UTC must be in the range -14 hours to +14 hours - otherwise an invalid time zone will be returned. -*/ - -QTimeZone::QTimeZone(int offsetSeconds) - : d((offsetSeconds >= MinUtcOffsetSecs && offsetSeconds <= MaxUtcOffsetSecs) - ? new QUtcTimeZonePrivate(offsetSeconds) : nullptr) -{ -} - -/*! - Creates a custom time zone with an ID of \a ianaId and an offset from UTC - of \a offsetSeconds. The \a name will be the name used by displayName() - for the LongName, the \a abbreviation will be used by displayName() for the - ShortName and by abbreviation(), and the optional \a country will be used - by country(). The \a comment is an optional note that may be displayed in - a GUI to assist users in selecting a time zone. - - The \a ianaId must not be one of the available system IDs returned by - availableTimeZoneIds(). The \a offsetSeconds from UTC must be in the range - -14 hours to +14 hours. - - If the custom time zone does not have a specific country then set it to the - default value of QLocale::AnyCountry. -*/ - -QTimeZone::QTimeZone(const QByteArray &ianaId, int offsetSeconds, const QString &name, - const QString &abbreviation, QLocale::Country country, const QString &comment) - : d() -{ - if (!isTimeZoneIdAvailable(ianaId)) - d = new QUtcTimeZonePrivate(ianaId, offsetSeconds, name, abbreviation, country, comment); -} - -/*! - \internal - - Private. Create time zone with given private backend -*/ - -QTimeZone::QTimeZone(QTimeZonePrivate &dd) - : d(&dd) -{ -} - -/*! - Copy constructor, copy \a other to this. -*/ - -QTimeZone::QTimeZone(const QTimeZone &other) - : d(other.d) -{ -} - -/*! - Destroys the time zone. -*/ - -QTimeZone::~QTimeZone() -{ -} - -/*! - \fn QTimeZone::swap(QTimeZone &other) - - Swaps this time zone instance with \a other. This function is very - fast and never fails. -*/ - -/*! - Assignment operator, assign \a other to this. -*/ - -QTimeZone &QTimeZone::operator=(const QTimeZone &other) -{ - d = other.d; - return *this; -} - -/* - \fn void QTimeZone::swap(QTimeZone &other) - - Swaps this timezone with \a other. This function is very fast and - never fails. -*/ - -/*! - \fn QTimeZone &QTimeZone::operator=(QTimeZone &&other) - - Move-assigns \a other to this QTimeZone instance, transferring the - ownership of the managed pointer to this instance. -*/ - -/*! - Returns \c true if this time zone is equal to the \a other time zone. -*/ - -bool QTimeZone::operator==(const QTimeZone &other) const -{ - if (d && other.d) - return (*d == *other.d); - else - return (d == other.d); -} - -/*! - Returns \c true if this time zone is not equal to the \a other time zone. -*/ - -bool QTimeZone::operator!=(const QTimeZone &other) const -{ - if (d && other.d) - return (*d != *other.d); - else - return (d != other.d); -} - -/*! - Returns \c true if this time zone is valid. -*/ - -bool QTimeZone::isValid() const -{ - if (d) - return d->isValid(); - else - return false; -} - -/*! - Returns the IANA ID for the time zone. - - IANA IDs are used on all platforms. On Windows these are translated - from the Windows ID into the closest IANA ID for the time zone and country. -*/ - -QByteArray QTimeZone::id() const -{ - if (d) - return d->id(); - else - return QByteArray(); -} - -/*! - Returns the country for the time zone. -*/ - -QLocale::Country QTimeZone::country() const -{ - if (isValid()) - return d->country(); - else - return QLocale::AnyCountry; -} - -/*! - Returns any comment for the time zone. - - A comment may be provided by the host platform to assist users in - choosing the correct time zone. Depending on the platform this may not - be localized. -*/ - -QString QTimeZone::comment() const -{ - if (isValid()) - return d->comment(); - else - return QString(); -} - -/*! - Returns the localized time zone display name at the given \a atDateTime - for the given \a nameType in the given \a locale. The \a nameType and - \a locale requested may not be supported on all platforms, in which case - the best available option will be returned. - - If the \a locale is not provided then the application default locale will - be used. - - The display name may change depending on DST or historical events. - - \sa abbreviation() -*/ - -QString QTimeZone::displayName(const QDateTime &atDateTime, NameType nameType, - const QLocale &locale) const -{ - if (isValid()) - return d->displayName(atDateTime.toMSecsSinceEpoch(), nameType, locale); - else - return QString(); -} - -/*! - Returns the localized time zone display name for the given \a timeType - and \a nameType in the given \a locale. The \a nameType and \a locale - requested may not be supported on all platforms, in which case the best - available option will be returned. - - If the \a locale is not provided then the application default locale will - be used. - - Where the time zone display names have changed over time then the most - recent names will be used. - - \sa abbreviation() -*/ - -QString QTimeZone::displayName(TimeType timeType, NameType nameType, - const QLocale &locale) const -{ - if (isValid()) - return d->displayName(timeType, nameType, locale); - else - return QString(); -} - -/*! - Returns the time zone abbreviation at the given \a atDateTime. The - abbreviation may change depending on DST or even historical events. - - Note that the abbreviation is not guaranteed to be unique to this time zone - and should not be used in place of the ID or display name. - - \sa displayName() -*/ - -QString QTimeZone::abbreviation(const QDateTime &atDateTime) const -{ - if (isValid()) - return d->abbreviation(atDateTime.toMSecsSinceEpoch()); - else - return QString(); -} - -/*! - Returns the total effective offset at the given \a atDateTime, i.e. the - number of seconds to add to UTC to obtain the local time. This includes - any DST offset that may be in effect, i.e. it is the sum of - standardTimeOffset() and daylightTimeOffset() for the given datetime. - - For example, for the time zone "Europe/Berlin" the standard time offset is - +3600 seconds and the DST offset is +3600 seconds. During standard time - offsetFromUtc() will return +3600 (UTC+01:00), and during DST it will - return +7200 (UTC+02:00). - - \sa standardTimeOffset(), daylightTimeOffset() -*/ - -int QTimeZone::offsetFromUtc(const QDateTime &atDateTime) const -{ - if (isValid()) - return d->offsetFromUtc(atDateTime.toMSecsSinceEpoch()); - else - return 0; -} - -/*! - Returns the standard time offset at the given \a atDateTime, i.e. the - number of seconds to add to UTC to obtain the local Standard Time. This - excludes any DST offset that may be in effect. - - For example, for the time zone "Europe/Berlin" the standard time offset is - +3600 seconds. During both standard and DST offsetFromUtc() will return - +3600 (UTC+01:00). - - \sa offsetFromUtc(), daylightTimeOffset() -*/ - -int QTimeZone::standardTimeOffset(const QDateTime &atDateTime) const -{ - if (isValid()) - return d->standardTimeOffset(atDateTime.toMSecsSinceEpoch()); - else - return 0; -} - -/*! - Returns the daylight-saving time offset at the given \a atDateTime, - i.e. the number of seconds to add to the standard time offset to obtain the - local daylight-saving time. - - For example, for the time zone "Europe/Berlin" the DST offset is +3600 - seconds. During standard time daylightTimeOffset() will return 0, and when - daylight-saving is in effect it will return +3600. - - \sa offsetFromUtc(), standardTimeOffset() -*/ - -int QTimeZone::daylightTimeOffset(const QDateTime &atDateTime) const -{ - if (hasDaylightTime()) - return d->daylightTimeOffset(atDateTime.toMSecsSinceEpoch()); - else - return 0; -} - -/*! - Returns \c true if the time zone has practiced daylight-saving at any time. - - \sa isDaylightTime(), daylightTimeOffset() -*/ - -bool QTimeZone::hasDaylightTime() const -{ - if (isValid()) - return d->hasDaylightTime(); - else - return false; -} - -/*! - Returns \c true if daylight-saving was in effect at the given \a atDateTime. - - \sa hasDaylightTime(), daylightTimeOffset() -*/ - -bool QTimeZone::isDaylightTime(const QDateTime &atDateTime) const -{ - if (hasDaylightTime()) - return d->isDaylightTime(atDateTime.toMSecsSinceEpoch()); - else - return false; -} - -/*! - Returns the effective offset details at the given \a forDateTime. This is - the equivalent of calling offsetFromUtc(), abbreviation(), etc individually but is - more efficient. - - \sa offsetFromUtc(), standardTimeOffset(), daylightTimeOffset(), abbreviation() -*/ - -QTimeZone::OffsetData QTimeZone::offsetData(const QDateTime &forDateTime) const -{ - if (hasTransitions()) - return QTimeZonePrivate::toOffsetData(d->data(forDateTime.toMSecsSinceEpoch())); - else - return QTimeZonePrivate::invalidOffsetData(); -} - -/*! - Returns \c true if the system backend supports obtaining transitions. - - Transitions are changes in the time-zone: these happen when DST turns on or - off and when authorities alter the offsets for the time-zone. - - \sa nextTransition(), previousTransition(), transitions() -*/ - -bool QTimeZone::hasTransitions() const -{ - if (isValid()) - return d->hasTransitions(); - else - return false; -} - -/*! - Returns the first time zone Transition after the given \a afterDateTime. - This is most useful when you have a Transition time and wish to find the - Transition after it. - - If there is no transition after the given \a afterDateTime then an invalid - OffsetData will be returned with an invalid QDateTime. - - The given \a afterDateTime is exclusive. - - \sa hasTransitions(), previousTransition(), transitions() -*/ - -QTimeZone::OffsetData QTimeZone::nextTransition(const QDateTime &afterDateTime) const -{ - if (hasTransitions()) - return QTimeZonePrivate::toOffsetData(d->nextTransition(afterDateTime.toMSecsSinceEpoch())); - else - return QTimeZonePrivate::invalidOffsetData(); -} - -/*! - Returns the first time zone Transition before the given \a beforeDateTime. - This is most useful when you have a Transition time and wish to find the - Transition before it. - - If there is no transition before the given \a beforeDateTime then an invalid - OffsetData will be returned with an invalid QDateTime. - - The given \a beforeDateTime is exclusive. - - \sa hasTransitions(), nextTransition(), transitions() -*/ - -QTimeZone::OffsetData QTimeZone::previousTransition(const QDateTime &beforeDateTime) const -{ - if (hasTransitions()) - return QTimeZonePrivate::toOffsetData(d->previousTransition(beforeDateTime.toMSecsSinceEpoch())); - else - return QTimeZonePrivate::invalidOffsetData(); -} - -/*! - Returns a list of all time zone transitions between the given datetimes. - - The given \a fromDateTime and \a toDateTime are inclusive. - - \sa hasTransitions(), nextTransition(), previousTransition() -*/ - -QTimeZone::OffsetDataList QTimeZone::transitions(const QDateTime &fromDateTime, - const QDateTime &toDateTime) const -{ - OffsetDataList list; - if (hasTransitions()) { - const QTimeZonePrivate::DataList plist = d->transitions(fromDateTime.toMSecsSinceEpoch(), - toDateTime.toMSecsSinceEpoch()); - list.reserve(plist.count()); - for (const QTimeZonePrivate::Data &pdata : plist) - list.append(QTimeZonePrivate::toOffsetData(pdata)); - } - return list; -} - -// Static methods - -/*! - Returns the current system time zone IANA ID. - - On Windows this ID is translated from the Windows ID using an internal - translation table and the user's selected country. As a consequence there - is a small chance any Windows install may have IDs not known by Qt, in - which case "UTC" will be returned. -*/ - -QByteArray QTimeZone::systemTimeZoneId() -{ - return global_tz->backend->systemTimeZoneId(); -} - -/*! - \since 5.5 - Returns a QTimeZone object that refers to the local system time, as - specified by systemTimeZoneId(). - - \sa utc() -*/ -QTimeZone QTimeZone::systemTimeZone() -{ - return QTimeZone(QTimeZone::systemTimeZoneId()); -} - -/*! - \since 5.5 - Returns a QTimeZone object that refers to UTC (Universal Time Coordinated). - - \sa systemTimeZone() -*/ -QTimeZone QTimeZone::utc() -{ - return QTimeZone(QTimeZonePrivate::utcQByteArray()); -} - -/*! - Returns \c true if a given time zone \a ianaId is available on this system. - - \sa availableTimeZoneIds() -*/ - -bool QTimeZone::isTimeZoneIdAvailable(const QByteArray &ianaId) -{ - // isValidId is not strictly required, but faster to weed out invalid - // IDs as availableTimeZoneIds() may be slow - if (!QTimeZonePrivate::isValidId(ianaId)) - return false; - return QUtcTimeZonePrivate().isTimeZoneIdAvailable(ianaId) || - global_tz->backend->isTimeZoneIdAvailable(ianaId); -} - -static QList<QByteArray> set_union(const QList<QByteArray> &l1, const QList<QByteArray> &l2) -{ - QList<QByteArray> result; - result.reserve(l1.size() + l2.size()); - std::set_union(l1.begin(), l1.end(), - l2.begin(), l2.end(), - std::back_inserter(result)); - return result; -} - -/*! - Returns a list of all available IANA time zone IDs on this system. - - \sa isTimeZoneIdAvailable() -*/ - -QList<QByteArray> QTimeZone::availableTimeZoneIds() -{ - return set_union(QUtcTimeZonePrivate().availableTimeZoneIds(), - global_tz->backend->availableTimeZoneIds()); -} - -/*! - Returns a list of all available IANA time zone IDs for a given \a country. - - As a special case, a \a country of Qt::AnyCountry returns those time zones - that do not have any country related to them, such as UTC. If you require - a list of all time zone IDs for all countries then use the standard - availableTimeZoneIds() method. - - \sa isTimeZoneIdAvailable() -*/ - -QList<QByteArray> QTimeZone::availableTimeZoneIds(QLocale::Country country) -{ - return set_union(QUtcTimeZonePrivate().availableTimeZoneIds(country), - global_tz->backend->availableTimeZoneIds(country)); -} - -/*! - Returns a list of all available IANA time zone IDs with a given standard - time offset of \a offsetSeconds. - - \sa isTimeZoneIdAvailable() -*/ - -QList<QByteArray> QTimeZone::availableTimeZoneIds(int offsetSeconds) -{ - return set_union(QUtcTimeZonePrivate().availableTimeZoneIds(offsetSeconds), - global_tz->backend->availableTimeZoneIds(offsetSeconds)); -} - -/*! - Returns the Windows ID equivalent to the given \a ianaId. - - \sa windowsIdToDefaultIanaId(), windowsIdToIanaIds() -*/ - -QByteArray QTimeZone::ianaIdToWindowsId(const QByteArray &ianaId) -{ - return QTimeZonePrivate::ianaIdToWindowsId(ianaId); -} - -/*! - Returns the default IANA ID for a given \a windowsId. - - Because a Windows ID can cover several IANA IDs in several different - countries, this function returns the most frequently used IANA ID with no - regard for the country and should thus be used with care. It is usually - best to request the default for a specific country. - - \sa ianaIdToWindowsId(), windowsIdToIanaIds() -*/ - -QByteArray QTimeZone::windowsIdToDefaultIanaId(const QByteArray &windowsId) -{ - return QTimeZonePrivate::windowsIdToDefaultIanaId(windowsId); -} - -/*! - Returns the default IANA ID for a given \a windowsId and \a country. - - Because a Windows ID can cover several IANA IDs within a given country, - the most frequently used IANA ID in that country is returned. - - As a special case, QLocale::AnyCountry returns the default of those IANA IDs - that do not have any specific country. - - \sa ianaIdToWindowsId(), windowsIdToIanaIds() -*/ - -QByteArray QTimeZone::windowsIdToDefaultIanaId(const QByteArray &windowsId, - QLocale::Country country) -{ - return QTimeZonePrivate::windowsIdToDefaultIanaId(windowsId, country); -} - -/*! - Returns all the IANA IDs for a given \a windowsId. - - The returned list is sorted alphabetically. - - \sa ianaIdToWindowsId(), windowsIdToDefaultIanaId() -*/ - -QList<QByteArray> QTimeZone::windowsIdToIanaIds(const QByteArray &windowsId) -{ - return QTimeZonePrivate::windowsIdToIanaIds(windowsId); -} - -/*! - Returns all the IANA IDs for a given \a windowsId and \a country. - - As a special case QLocale::AnyCountry returns those IANA IDs that do - not have any specific country. - - The returned list is in order of frequency of usage, i.e. larger zones - within a country are listed first. - - \sa ianaIdToWindowsId(), windowsIdToDefaultIanaId() -*/ - -QList<QByteArray> QTimeZone::windowsIdToIanaIds(const QByteArray &windowsId, - QLocale::Country country) -{ - return QTimeZonePrivate::windowsIdToIanaIds(windowsId, country); -} - -#ifndef QT_NO_DATASTREAM -QDataStream &operator<<(QDataStream &ds, const QTimeZone &tz) -{ - tz.d->serialize(ds); - return ds; -} - -QDataStream &operator>>(QDataStream &ds, QTimeZone &tz) -{ - QString ianaId; - ds >> ianaId; - if (ianaId == QLatin1String("OffsetFromUtc")) { - int utcOffset; - QString name; - QString abbreviation; - int country; - QString comment; - ds >> ianaId >> utcOffset >> name >> abbreviation >> country >> comment; - // Try creating as a system timezone, which succeeds (producing a valid - // zone) iff ianaId is valid; we can then ignore the other data. - tz = QTimeZone(ianaId.toUtf8()); - // If not, then construct a custom timezone using all the saved values: - if (!tz.isValid()) - tz = QTimeZone(ianaId.toUtf8(), utcOffset, name, abbreviation, - QLocale::Country(country), comment); - } else { - tz = QTimeZone(ianaId.toUtf8()); - } - return ds; -} -#endif // QT_NO_DATASTREAM - -#ifndef QT_NO_DEBUG_STREAM -QDebug operator<<(QDebug dbg, const QTimeZone &tz) -{ - QDebugStateSaver saver(dbg); - //TODO Include backend and data version details? - dbg.nospace() << "QTimeZone(" << QString::fromUtf8(tz.id()) << ')'; - return dbg; -} -#endif - -QT_END_NAMESPACE |