diff options
Diffstat (limited to 'src/corelib/tools/qtimezoneprivate_icu.cpp')
| -rw-r--r-- | src/corelib/tools/qtimezoneprivate_icu.cpp | 508 |
1 files changed, 0 insertions, 508 deletions
diff --git a/src/corelib/tools/qtimezoneprivate_icu.cpp b/src/corelib/tools/qtimezoneprivate_icu.cpp deleted file mode 100644 index 5570ce7571..0000000000 --- a/src/corelib/tools/qtimezoneprivate_icu.cpp +++ /dev/null @@ -1,508 +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 <unicode/ucal.h> - -#include <qdebug.h> -#include <qlist.h> - -#include <algorithm> - -QT_BEGIN_NAMESPACE - -/* - Private - - ICU implementation -*/ - -// ICU utilities - -// Convert TimeType and NameType into ICU UCalendarDisplayNameType -static UCalendarDisplayNameType ucalDisplayNameType(QTimeZone::TimeType timeType, QTimeZone::NameType nameType) -{ - // TODO ICU C UCalendarDisplayNameType does not support full set of C++ TimeZone::EDisplayType - switch (nameType) { - case QTimeZone::ShortName : - case QTimeZone::OffsetName : - if (timeType == QTimeZone::DaylightTime) - return UCAL_SHORT_DST; - // Includes GenericTime - return UCAL_SHORT_STANDARD; - case QTimeZone::DefaultName : - case QTimeZone::LongName : - if (timeType == QTimeZone::DaylightTime) - return UCAL_DST; - // Includes GenericTime - return UCAL_STANDARD; - } - return UCAL_STANDARD; -} - -// Qt wrapper around ucal_getDefaultTimeZone() -static QByteArray ucalDefaultTimeZoneId() -{ - int32_t size = 30; - QString result(size, Qt::Uninitialized); - UErrorCode status = U_ZERO_ERROR; - - // size = ucal_getDefaultTimeZone(result, resultLength, status) - size = ucal_getDefaultTimeZone(reinterpret_cast<UChar *>(result.data()), size, &status); - - // If overflow, then resize and retry - if (status == U_BUFFER_OVERFLOW_ERROR) { - result.resize(size); - status = U_ZERO_ERROR; - size = ucal_getDefaultTimeZone(reinterpret_cast<UChar *>(result.data()), size, &status); - } - - // If successful on first or second go, resize and return - if (U_SUCCESS(status)) { - result.resize(size); - return std::move(result).toUtf8(); - } - - return QByteArray(); -} - -// Qt wrapper around ucal_getTimeZoneDisplayName() -static QString ucalTimeZoneDisplayName(UCalendar *ucal, QTimeZone::TimeType timeType, - QTimeZone::NameType nameType, - const QString &localeCode) -{ - int32_t size = 50; - QString result(size, Qt::Uninitialized); - UErrorCode status = U_ZERO_ERROR; - - // size = ucal_getTimeZoneDisplayName(cal, type, locale, result, resultLength, status) - size = ucal_getTimeZoneDisplayName(ucal, - ucalDisplayNameType(timeType, nameType), - localeCode.toUtf8(), - reinterpret_cast<UChar *>(result.data()), - size, - &status); - - // If overflow, then resize and retry - if (status == U_BUFFER_OVERFLOW_ERROR) { - result.resize(size); - status = U_ZERO_ERROR; - size = ucal_getTimeZoneDisplayName(ucal, - ucalDisplayNameType(timeType, nameType), - localeCode.toUtf8(), - reinterpret_cast<UChar *>(result.data()), - size, - &status); - } - - // If successful on first or second go, resize and return - if (U_SUCCESS(status)) { - result.resize(size); - return result; - } - - return QString(); -} - -// Qt wrapper around ucal_get() for offsets -static bool ucalOffsetsAtTime(UCalendar *m_ucal, qint64 atMSecsSinceEpoch, - int *utcOffset, int *dstOffset) -{ - *utcOffset = 0; - *dstOffset = 0; - - // Clone the ucal so we don't change the shared object - UErrorCode status = U_ZERO_ERROR; - UCalendar *ucal = ucal_clone(m_ucal, &status); - if (!U_SUCCESS(status)) - return false; - - // Set the date to find the offset for - status = U_ZERO_ERROR; - ucal_setMillis(ucal, atMSecsSinceEpoch, &status); - - int32_t utc = 0; - if (U_SUCCESS(status)) { - status = U_ZERO_ERROR; - // Returns msecs - utc = ucal_get(ucal, UCAL_ZONE_OFFSET, &status) / 1000; - } - - int32_t dst = 0; - if (U_SUCCESS(status)) { - status = U_ZERO_ERROR; - // Returns msecs - dst = ucal_get(ucal, UCAL_DST_OFFSET, &status) / 1000; - } - - ucal_close(ucal); - if (U_SUCCESS(status)) { - *utcOffset = utc; - *dstOffset = dst; - return true; - } - return false; -} - -// ICU Draft api in v50, should be stable in ICU v51. Available in C++ api from ICU v3.8 -#if U_ICU_VERSION_MAJOR_NUM == 50 -// Qt wrapper around qt_ucal_getTimeZoneTransitionDate & ucal_get -static QTimeZonePrivate::Data ucalTimeZoneTransition(UCalendar *m_ucal, - UTimeZoneTransitionType type, - qint64 atMSecsSinceEpoch) -{ - QTimeZonePrivate::Data tran = QTimeZonePrivate::invalidData(); - - // Clone the ucal so we don't change the shared object - UErrorCode status = U_ZERO_ERROR; - UCalendar *ucal = ucal_clone(m_ucal, &status); - if (!U_SUCCESS(status)) - return tran; - - // Set the date to find the transition for - status = U_ZERO_ERROR; - ucal_setMillis(ucal, atMSecsSinceEpoch, &status); - - // Find the transition time - UDate tranMSecs = 0; - status = U_ZERO_ERROR; - bool ok = ucal_getTimeZoneTransitionDate(ucal, type, &tranMSecs, &status); - - // Set the transition time to find the offsets for - if (U_SUCCESS(status) && ok) { - status = U_ZERO_ERROR; - ucal_setMillis(ucal, tranMSecs, &status); - } - - int32_t utc = 0; - if (U_SUCCESS(status) && ok) { - status = U_ZERO_ERROR; - utc = ucal_get(ucal, UCAL_ZONE_OFFSET, &status) / 1000; - } - - int32_t dst = 0; - if (U_SUCCESS(status) && ok) { - status = U_ZERO_ERROR; - dst = ucal_get(ucal, UCAL_DST_OFFSET, &status) / 1000; - } - - ucal_close(ucal); - if (!U_SUCCESS(status) || !ok) - return tran; - tran.atMSecsSinceEpoch = tranMSecs; - tran.offsetFromUtc = utc + dst; - tran.standardTimeOffset = utc; - tran.daylightTimeOffset = dst; - // TODO No ICU API, use short name instead - if (dst == 0) - tran.abbreviation = ucalTimeZoneDisplayName(m_ucal, QTimeZone::StandardTime, - QTimeZone::ShortName, QLocale().name()); - else - tran.abbreviation = ucalTimeZoneDisplayName(m_ucal, QTimeZone::DaylightTime, - QTimeZone::ShortName, QLocale().name()); - return tran; -} -#endif // U_ICU_VERSION_SHORT - -// Convert a uenum to a QList<QByteArray> -static QList<QByteArray> uenumToIdList(UEnumeration *uenum) -{ - QList<QByteArray> list; - int32_t size = 0; - UErrorCode status = U_ZERO_ERROR; - // TODO Perhaps use uenum_unext instead? - QByteArray result = uenum_next(uenum, &size, &status); - while (U_SUCCESS(status) && !result.isEmpty()) { - list << result; - status = U_ZERO_ERROR; - result = uenum_next(uenum, &size, &status); - } - std::sort(list.begin(), list.end()); - list.erase(std::unique(list.begin(), list.end()), list.end()); - return list; -} - -// Qt wrapper around ucal_getDSTSavings() -static int ucalDaylightOffset(const QByteArray &id) -{ - UErrorCode status = U_ZERO_ERROR; - const int32_t dstMSecs = ucal_getDSTSavings(reinterpret_cast<const UChar *>(id.data()), &status); - if (U_SUCCESS(status)) - return (dstMSecs / 1000); - else - return 0; -} - -// Create the system default time zone -QIcuTimeZonePrivate::QIcuTimeZonePrivate() - : m_ucal(0) -{ - // TODO No ICU C API to obtain sysem tz, assume default hasn't been changed - init(ucalDefaultTimeZoneId()); -} - -// Create a named time zone -QIcuTimeZonePrivate::QIcuTimeZonePrivate(const QByteArray &ianaId) - : m_ucal(0) -{ - // Need to check validity here as ICu will create a GMT tz if name is invalid - if (availableTimeZoneIds().contains(ianaId)) - init(ianaId); -} - -QIcuTimeZonePrivate::QIcuTimeZonePrivate(const QIcuTimeZonePrivate &other) - : QTimeZonePrivate(other), m_ucal(0) -{ - // Clone the ucal so we don't close the shared object - UErrorCode status = U_ZERO_ERROR; - m_ucal = ucal_clone(other.m_ucal, &status); - if (!U_SUCCESS(status)) { - m_id.clear(); - m_ucal = 0; - } -} - -QIcuTimeZonePrivate::~QIcuTimeZonePrivate() -{ - ucal_close(m_ucal); -} - -QIcuTimeZonePrivate *QIcuTimeZonePrivate::clone() const -{ - return new QIcuTimeZonePrivate(*this); -} - -void QIcuTimeZonePrivate::init(const QByteArray &ianaId) -{ - m_id = ianaId; - - const QString id = QString::fromUtf8(m_id); - UErrorCode status = U_ZERO_ERROR; - //TODO Use UCAL_GREGORIAN for now to match QLocale, change to UCAL_DEFAULT once full ICU support - m_ucal = ucal_open(reinterpret_cast<const UChar *>(id.data()), id.size(), - QLocale().name().toUtf8(), UCAL_GREGORIAN, &status); - - if (!U_SUCCESS(status)) { - m_id.clear(); - m_ucal = 0; - } -} - -QString QIcuTimeZonePrivate::displayName(QTimeZone::TimeType timeType, - QTimeZone::NameType nameType, - const QLocale &locale) const -{ - // Return standard offset format name as ICU C api doesn't support it yet - if (nameType == QTimeZone::OffsetName) { - const Data nowData = data(QDateTime::currentMSecsSinceEpoch()); - // We can't use transitions reliably to find out right dst offset - // Instead use dst offset api to try get it if needed - if (timeType == QTimeZone::DaylightTime) - return isoOffsetFormat(nowData.standardTimeOffset + ucalDaylightOffset(m_id)); - else - return isoOffsetFormat(nowData.standardTimeOffset); - } - return ucalTimeZoneDisplayName(m_ucal, timeType, nameType, locale.name()); -} - -QString QIcuTimeZonePrivate::abbreviation(qint64 atMSecsSinceEpoch) const -{ - // TODO No ICU API, use short name instead - if (isDaylightTime(atMSecsSinceEpoch)) - return displayName(QTimeZone::DaylightTime, QTimeZone::ShortName, QString()); - else - return displayName(QTimeZone::StandardTime, QTimeZone::ShortName, QString()); -} - -int QIcuTimeZonePrivate::offsetFromUtc(qint64 atMSecsSinceEpoch) const -{ - int stdOffset = 0; - int dstOffset = 0; - ucalOffsetsAtTime(m_ucal, atMSecsSinceEpoch, &stdOffset, & dstOffset); - return stdOffset + dstOffset; -} - -int QIcuTimeZonePrivate::standardTimeOffset(qint64 atMSecsSinceEpoch) const -{ - int stdOffset = 0; - int dstOffset = 0; - ucalOffsetsAtTime(m_ucal, atMSecsSinceEpoch, &stdOffset, & dstOffset); - return stdOffset; -} - -int QIcuTimeZonePrivate::daylightTimeOffset(qint64 atMSecsSinceEpoch) const -{ - int stdOffset = 0; - int dstOffset = 0; - ucalOffsetsAtTime(m_ucal, atMSecsSinceEpoch, &stdOffset, & dstOffset); - return dstOffset; -} - -bool QIcuTimeZonePrivate::hasDaylightTime() const -{ - // TODO No direct ICU C api, work-around below not reliable? Find a better way? - return (ucalDaylightOffset(m_id) != 0); -} - -bool QIcuTimeZonePrivate::isDaylightTime(qint64 atMSecsSinceEpoch) const -{ - // Clone the ucal so we don't change the shared object - UErrorCode status = U_ZERO_ERROR; - UCalendar *ucal = ucal_clone(m_ucal, &status); - if (!U_SUCCESS(status)) - return false; - - // Set the date to find the offset for - status = U_ZERO_ERROR; - ucal_setMillis(ucal, atMSecsSinceEpoch, &status); - - bool result = false; - if (U_SUCCESS(status)) { - status = U_ZERO_ERROR; - result = ucal_inDaylightTime(ucal, &status); - } - - ucal_close(ucal); - return result; -} - -QTimeZonePrivate::Data QIcuTimeZonePrivate::data(qint64 forMSecsSinceEpoch) const -{ - // Available in ICU C++ api, and draft C api in v50 - // TODO When v51 released see if api is stable - QTimeZonePrivate::Data data = invalidData(); -#if U_ICU_VERSION_MAJOR_NUM == 50 - data = ucalTimeZoneTransition(m_ucal, UCAL_TZ_TRANSITION_PREVIOUS_INCLUSIVE, - forMSecsSinceEpoch); -#else - ucalOffsetsAtTime(m_ucal, forMSecsSinceEpoch, &data.standardTimeOffset, - &data.daylightTimeOffset); - data.offsetFromUtc = data.standardTimeOffset + data.daylightTimeOffset; - data.abbreviation = abbreviation(forMSecsSinceEpoch); -#endif // U_ICU_VERSION_MAJOR_NUM == 50 - data.atMSecsSinceEpoch = forMSecsSinceEpoch; - return data; -} - -bool QIcuTimeZonePrivate::hasTransitions() const -{ - // Available in ICU C++ api, and draft C api in v50 - // TODO When v51 released see if api is stable -#if U_ICU_VERSION_MAJOR_NUM == 50 - return true; -#else - return false; -#endif // U_ICU_VERSION_MAJOR_NUM == 50 -} - -QTimeZonePrivate::Data QIcuTimeZonePrivate::nextTransition(qint64 afterMSecsSinceEpoch) const -{ - // Available in ICU C++ api, and draft C api in v50 - // TODO When v51 released see if api is stable -#if U_ICU_VERSION_MAJOR_NUM == 50 - return ucalTimeZoneTransition(m_ucal, UCAL_TZ_TRANSITION_NEXT, afterMSecsSinceEpoch); -#else - Q_UNUSED(afterMSecsSinceEpoch) - return invalidData(); -#endif // U_ICU_VERSION_MAJOR_NUM == 50 -} - -QTimeZonePrivate::Data QIcuTimeZonePrivate::previousTransition(qint64 beforeMSecsSinceEpoch) const -{ - // Available in ICU C++ api, and draft C api in v50 - // TODO When v51 released see if api is stable -#if U_ICU_VERSION_MAJOR_NUM == 50 - return ucalTimeZoneTransition(m_ucal, UCAL_TZ_TRANSITION_PREVIOUS, beforeMSecsSinceEpoch); -#else - Q_UNUSED(beforeMSecsSinceEpoch) - return invalidData(); -#endif // U_ICU_VERSION_MAJOR_NUM == 50 -} - -QByteArray QIcuTimeZonePrivate::systemTimeZoneId() const -{ - // No ICU C API to obtain sysem tz - // TODO Assume default hasn't been changed and is the latests system - return ucalDefaultTimeZoneId(); -} - -QList<QByteArray> QIcuTimeZonePrivate::availableTimeZoneIds() const -{ - UErrorCode status = U_ZERO_ERROR; - UEnumeration *uenum = ucal_openTimeZones(&status); - QList<QByteArray> result; - if (U_SUCCESS(status)) - result = uenumToIdList(uenum); - uenum_close(uenum); - return result; -} - -QList<QByteArray> QIcuTimeZonePrivate::availableTimeZoneIds(QLocale::Country country) const -{ - const QLatin1String regionCode = QLocalePrivate::countryToCode(country); - const QByteArray regionCodeUtf8 = QString(regionCode).toUtf8(); - UErrorCode status = U_ZERO_ERROR; - UEnumeration *uenum = ucal_openCountryTimeZones(regionCodeUtf8.data(), &status); - QList<QByteArray> result; - if (U_SUCCESS(status)) - result = uenumToIdList(uenum); - uenum_close(uenum); - return result; -} - -QList<QByteArray> QIcuTimeZonePrivate::availableTimeZoneIds(int offsetFromUtc) const -{ -// TODO Available directly in C++ api but not C api, from 4.8 onwards new filter method works -#if U_ICU_VERSION_MAJOR_NUM >= 49 || (U_ICU_VERSION_MAJOR_NUM == 4 && U_ICU_VERSION_MINOR_NUM == 8) - UErrorCode status = U_ZERO_ERROR; - UEnumeration *uenum = ucal_openTimeZoneIDEnumeration(UCAL_ZONE_TYPE_ANY, 0, - &offsetFromUtc, &status); - QList<QByteArray> result; - if (U_SUCCESS(status)) - result = uenumToIdList(uenum); - uenum_close(uenum); - return result; -#else - return QTimeZonePrivate::availableTimeZoneIds(offsetFromUtc); -#endif -} - -QT_END_NAMESPACE |