/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtCore module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the either Technology Preview License Agreement or the ** Beta Release License Agreement. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at http://qt.nokia.com/contact. ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qplatformdefs.h" #include "private/qdatetime_p.h" #include "qdatastream.h" #include "qset.h" #include "qlocale.h" #include "qdatetime.h" #include "qregexp.h" #include "qdebug.h" #if defined(Q_OS_WIN32) || defined(Q_OS_WINCE) #include #endif #ifndef Q_WS_WIN #include #endif #include #if defined(Q_OS_WINCE) #include "qfunctions_wince.h" #endif //#define QDATETIMEPARSER_DEBUG #if defined (QDATETIMEPARSER_DEBUG) && !defined(QT_NO_DEBUG_STREAM) # define QDTPDEBUG qDebug() << QString("%1:%2").arg(__FILE__).arg(__LINE__) # define QDTPDEBUGN qDebug #else # define QDTPDEBUG if (false) qDebug() # define QDTPDEBUGN if (false) qDebug #endif #if defined(Q_WS_MAC) #include #endif QT_BEGIN_NAMESPACE enum { FIRST_YEAR = -4713, FIRST_MONTH = 1, FIRST_DAY = 2, // ### Qt 5: make FIRST_DAY = 1, by support jd == 0 as valid SECS_PER_DAY = 86400, MSECS_PER_DAY = 86400000, SECS_PER_HOUR = 3600, MSECS_PER_HOUR = 3600000, SECS_PER_MIN = 60, MSECS_PER_MIN = 60000 }; static inline QDate fixedDate(int y, int m, int d) { QDate result(y, m, 1); result.setDate(y, m, qMin(d, result.daysInMonth())); return result; } static uint julianDayFromDate(int year, int month, int day) { if (year < 0) ++year; if (year > 1582 || (year == 1582 && (month > 10 || (month == 10 && day >= 15)))) { // Gregorian calendar starting from October 15, 1582 // Algorithm from Henry F. Fliegel and Thomas C. Van Flandern return (1461 * (year + 4800 + (month - 14) / 12)) / 4 + (367 * (month - 2 - 12 * ((month - 14) / 12))) / 12 - (3 * ((year + 4900 + (month - 14) / 12) / 100)) / 4 + day - 32075; } else if (year < 1582 || (year == 1582 && (month < 10 || (month == 10 && day <= 4)))) { // Julian calendar until October 4, 1582 // Algorithm from Frequently Asked Questions about Calendars by Claus Toendering int a = (14 - month) / 12; return (153 * (month + (12 * a) - 3) + 2) / 5 + (1461 * (year + 4800 - a)) / 4 + day - 32083; } else { // the day following October 4, 1582 is October 15, 1582 return 0; } } static void getDateFromJulianDay(uint julianDay, int *year, int *month, int *day) { int y, m, d; if (julianDay >= 2299161) { // Gregorian calendar starting from October 15, 1582 // This algorithm is from Henry F. Fliegel and Thomas C. Van Flandern qulonglong ell, n, i, j; ell = qulonglong(julianDay) + 68569; n = (4 * ell) / 146097; ell = ell - (146097 * n + 3) / 4; i = (4000 * (ell + 1)) / 1461001; ell = ell - (1461 * i) / 4 + 31; j = (80 * ell) / 2447; d = ell - (2447 * j) / 80; ell = j / 11; m = j + 2 - (12 * ell); y = 100 * (n - 49) + i + ell; } else { // Julian calendar until October 4, 1582 // Algorithm from Frequently Asked Questions about Calendars by Claus Toendering julianDay += 32082; int dd = (4 * julianDay + 3) / 1461; int ee = julianDay - (1461 * dd) / 4; int mm = ((5 * ee) + 2) / 153; d = ee - (153 * mm + 2) / 5 + 1; m = mm + 3 - 12 * (mm / 10); y = dd - 4800 + (mm / 10); if (y <= 0) --y; } if (year) *year = y; if (month) *month = m; if (day) *day = d; } static const char monthDays[] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; #ifndef QT_NO_TEXTDATE static const char * const qt_shortMonthNames[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; #endif #ifndef QT_NO_DATESTRING static QString fmtDateTime(const QString& f, const QTime* dt = 0, const QDate* dd = 0); #endif /***************************************************************************** QDate member functions *****************************************************************************/ /*! \since 4.5 \enum QDate::MonthNameType This enum describes the types of the string representation used for the month name. \value DateFormat This type of name can be used for date-to-string formatting. \value StandaloneFormat This type is used when you need to enumerate months or weekdays. Usually standalone names are represented in singular forms with capitalized first letter. */ /*! \class QDate \reentrant \brief The QDate class provides date functions. A QDate object contains a calendar date, i.e. year, month, and day numbers, in the Gregorian calendar. (see \l{QDate G and J} {Use of Gregorian and Julian Calendars} for dates prior to 15 October 1582). It can read the current date from the system clock. It provides functions for comparing dates, and for manipulating dates. For example, it is possible to add and subtract days, months, and years to dates. A QDate object is typically created either by giving the year, month, and day numbers explicitly. Note that QDate interprets two digit years as is, i.e., years 0 - 99. A QDate can also be constructed with the static function currentDate(), which creates a QDate object containing the system clock's date. An explicit date can also be set using setDate(). The fromString() function returns a QDate given a string and a date format which is used to interpret the date within the string. The year(), month(), and day() functions provide access to the year, month, and day numbers. Also, dayOfWeek() and dayOfYear() functions are provided. The same information is provided in textual format by the toString(), shortDayName(), longDayName(), shortMonthName(), and longMonthName() functions. QDate provides a full set of operators to compare two QDate objects where smaller means earlier, and larger means later. You can increment (or decrement) a date by a given number of days using addDays(). Similarly you can use addMonths() and addYears(). The daysTo() function returns the number of days between two dates. The daysInMonth() and daysInYear() functions return how many days there are in this date's month and year, respectively. The isLeapYear() function indicates whether a date is in a leap year. \section1 \target QDate G and J \section2 Use of Gregorian and Julian Calendars QDate uses the Gregorian calendar in all locales, beginning on the date 15 October 1582. For dates up to and including 4 October 1582, the Julian calendar is used. This means there is a 10-day gap in the internal calendar between the 4th and the 15th of October 1582. When you use QDateTime for dates in that epoch, the day after 4 October 1582 is 15 October 1582, and the dates in the gap are invalid. The Julian to Gregorian changeover date used here is the date when the Gregorian calendar was first introduced, by Pope Gregory XIII. That change was not universally accepted and some localities only executed it at a later date (if at all). QDateTime doesn't take any of these historical facts into account. If an application must support a locale-specific dating system, it must do so on its own, remembering to convert the dates using the Julian day. \section2 No Year 0 There is no year 0. Dates in that year are considered invalid. The year -1 is the year "1 before Christ" or "1 before current era." The day before 0001-01-01 is December 31st, 1 BCE. \section2 Range of Valid Dates The range of valid dates is from January 2nd, 4713 BCE, to sometime in the year 11 million CE. The Julian Day returned by QDate::toJulianDay() is a number in the contiguous range from 1 to \e{overflow}, even across QDateTime's "date holes". It is suitable for use in applications that must convert a QDateTime to a date in another calendar system, e.g., Hebrew, Islamic or Chinese. \sa QTime, QDateTime, QDateEdit, QDateTimeEdit, QCalendarWidget */ /*! \fn QDate::QDate() Constructs a null date. Null dates are invalid. \sa isNull(), isValid() */ /*! Constructs a date with year \a y, month \a m and day \a d. If the specified date is invalid, the date is not set and isValid() returns false. A date before 2 January 4713 B.C. is considered invalid. \warning Years 0 to 99 are interpreted as is, i.e., years 0-99. \sa isValid() */ QDate::QDate(int y, int m, int d) { setDate(y, m, d); } /*! \fn bool QDate::isNull() const Returns true if the date is null; otherwise returns false. A null date is invalid. \note The behavior of this function is equivalent to isValid(). \sa isValid() */ /*! Returns true if this date is valid; otherwise returns false. \sa isNull() */ bool QDate::isValid() const { return !isNull(); } /*! Returns the year of this date. Negative numbers indicate years before 1 A.D. = 1 C.E., such that year -44 is 44 B.C. \sa month(), day() */ int QDate::year() const { int y; getDateFromJulianDay(jd, &y, 0, 0); return y; } /*! Returns the number corresponding to the month of this date, using the following convention: \list \i 1 = "January" \i 2 = "February" \i 3 = "March" \i 4 = "April" \i 5 = "May" \i 6 = "June" \i 7 = "July" \i 8 = "August" \i 9 = "September" \i 10 = "October" \i 11 = "November" \i 12 = "December" \endlist \sa year(), day() */ int QDate::month() const { int m; getDateFromJulianDay(jd, 0, &m, 0); return m; } /*! Returns the day of the month (1 to 31) of this date. \sa year(), month(), dayOfWeek() */ int QDate::day() const { int d; getDateFromJulianDay(jd, 0, 0, &d); return d; } /*! Returns the weekday (1 to 7) for this date. \sa day(), dayOfYear(), Qt::DayOfWeek */ int QDate::dayOfWeek() const { return (jd % 7) + 1; } /*! Returns the day of the year (1 to 365 or 366 on leap years) for this date. \sa day(), dayOfWeek() */ int QDate::dayOfYear() const { return jd - julianDayFromDate(year(), 1, 1) + 1; } /*! Returns the number of days in the month (28 to 31) for this date. \sa day(), daysInYear() */ int QDate::daysInMonth() const { int y, m, d; getDateFromJulianDay(jd, &y, &m, &d); if (m == 2 && isLeapYear(y)) return 29; else return monthDays[m]; } /*! Returns the number of days in the year (365 or 366) for this date. \sa day(), daysInMonth() */ int QDate::daysInYear() const { int y, m, d; getDateFromJulianDay(jd, &y, &m, &d); return isLeapYear(y) ? 366 : 365; } /*! Returns the week number (1 to 53), and stores the year in *\a{yearNumber} unless \a yearNumber is null (the default). Returns 0 if the date is invalid. In accordance with ISO 8601, weeks start on Monday and the first Thursday of a year is always in week 1 of that year. Most years have 52 weeks, but some have 53. *\a{yearNumber} is not always the same as year(). For example, 1 January 2000 has week number 52 in the year 1999, and 31 December 2002 has week number 1 in the year 2003. \legalese Copyright (c) 1989 The Regents of the University of California. All rights reserved. Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, advertising materials, and other materials related to such distribution and use acknowledge that the software was developed by the University of California, Berkeley. The name of the University may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. \sa isValid() */ int QDate::weekNumber(int *yearNumber) const { if (!isValid()) return 0; int year = QDate::year(); int yday = dayOfYear() - 1; int wday = dayOfWeek(); if (wday == 7) wday = 0; int w; for (;;) { int len; int bot; int top; len = isLeapYear(year) ? 366 : 365; /* ** What yday (-3 ... 3) does ** the ISO year begin on? */ bot = ((yday + 11 - wday) % 7) - 3; /* ** What yday does the NEXT ** ISO year begin on? */ top = bot - (len % 7); if (top < -3) top += 7; top += len; if (yday >= top) { ++year; w = 1; break; } if (yday >= bot) { w = 1 + ((yday - bot) / 7); break; } --year; yday += isLeapYear(year) ? 366 : 365; } if (yearNumber != 0) *yearNumber = year; return w; } #ifndef QT_NO_TEXTDATE /*! \since 4.5 Returns the short name of the \a month for the representation specified by \a type. The months are enumerated using the following convention: \list \i 1 = "Jan" \i 2 = "Feb" \i 3 = "Mar" \i 4 = "Apr" \i 5 = "May" \i 6 = "Jun" \i 7 = "Jul" \i 8 = "Aug" \i 9 = "Sep" \i 10 = "Oct" \i 11 = "Nov" \i 12 = "Dec" \endlist The month names will be localized according to the system's locale settings. \sa toString(), longMonthName(), shortDayName(), longDayName() */ QString QDate::shortMonthName(int month, QDate::MonthNameType type) { if (month < 1 || month > 12) { month = 1; } switch (type) { case QDate::DateFormat: return QLocale::system().monthName(month, QLocale::ShortFormat); case QDate::StandaloneFormat: return QLocale::system().standaloneMonthName(month, QLocale::ShortFormat); default: break; } return QString(); } /*! Returns the short version of the name of the \a month. The returned name is in normal type which can be used for date formatting. \sa toString(), longMonthName(), shortDayName(), longDayName() */ QString QDate::shortMonthName(int month) { return shortMonthName(month, QDate::DateFormat); } /*! \since 4.5 Returns the long name of the \a month for the representation specified by \a type. The months are enumerated using the following convention: \list \i 1 = "January" \i 2 = "February" \i 3 = "March" \i 4 = "April" \i 5 = "May" \i 6 = "June" \i 7 = "July" \i 8 = "August" \i 9 = "September" \i 10 = "October" \i 11 = "November" \i 12 = "December" \endlist The month names will be localized according to the system's locale settings. \sa toString(), shortMonthName(), shortDayName(), longDayName() */ QString QDate::longMonthName(int month, MonthNameType type) { if (month < 1 || month > 12) { month = 1; } switch (type) { case QDate::DateFormat: return QLocale::system().monthName(month, QLocale::LongFormat); case QDate::StandaloneFormat: return QLocale::system().standaloneMonthName(month, QLocale::LongFormat); default: break; } return QString(); } /*! Returns the long version of the name of the \a month. The returned name is in normal type which can be used for date formatting. \sa toString(), shortMonthName(), shortDayName(), longDayName() */ QString QDate::longMonthName(int month) { if (month < 1 || month > 12) { month = 1; } return QLocale::system().monthName(month, QLocale::LongFormat); } /*! \since 4.5 Returns the short name of the \a weekday for the representation specified by \a type. The days are enumerated using the following convention: \list \i 1 = "Mon" \i 2 = "Tue" \i 3 = "Wed" \i 4 = "Thu" \i 5 = "Fri" \i 6 = "Sat" \i 7 = "Sun" \endlist The day names will be localized according to the system's locale settings. \sa toString(), shortMonthName(), longMonthName(), longDayName() */ QString QDate::shortDayName(int weekday, MonthNameType type) { if (weekday < 1 || weekday > 7) { weekday = 1; } switch (type) { case QDate::DateFormat: return QLocale::system().dayName(weekday, QLocale::ShortFormat); case QDate::StandaloneFormat: return QLocale::system().standaloneDayName(weekday, QLocale::ShortFormat); default: break; } return QString(); } /*! Returns the short version of the name of the \a weekday. The returned name is in normal type which can be used for date formatting. \sa toString(), longDayName(), shortMonthName(), longMonthName() */ QString QDate::shortDayName(int weekday) { if (weekday < 1 || weekday > 7) { weekday = 1; } return QLocale::system().dayName(weekday, QLocale::ShortFormat); } /*! \since 4.5 Returns the long name of the \a weekday for the representation specified by \a type. The days are enumerated using the following convention: \list \i 1 = "Monday" \i 2 = "Tuesday" \i 3 = "Wednesday" \i 4 = "Thursday" \i 5 = "Friday" \i 6 = "Saturday" \i 7 = "Sunday" \endlist The day names will be localized according to the system's locale settings. \sa toString(), shortDayName(), shortMonthName(), longMonthName() */ QString QDate::longDayName(int weekday, MonthNameType type) { if (weekday < 1 || weekday > 7) { weekday = 1; } switch (type) { case QDate::DateFormat: return QLocale::system().dayName(weekday, QLocale::LongFormat); case QDate::StandaloneFormat: return QLocale::system().standaloneDayName(weekday, QLocale::LongFormat); default: break; } return QLocale::system().dayName(weekday, QLocale::LongFormat); } /*! Returns the long version of the name of the \a weekday. The returned name is in normal type which can be used for date formatting. \sa toString(), shortDayName(), shortMonthName(), longMonthName() */ QString QDate::longDayName(int weekday) { if (weekday < 1 || weekday > 7) { weekday = 1; } return QLocale::system().dayName(weekday, QLocale::LongFormat); } #endif //QT_NO_TEXTDATE #ifndef QT_NO_DATESTRING /*! \fn QString QDate::toString(Qt::DateFormat format) const \overload Returns the date as a string. The \a format parameter determines the format of the string. If the \a format is Qt::TextDate, the string is formatted in the default way. QDate::shortDayName() and QDate::shortMonthName() are used to generate the string, so the day and month names will be localized names. An example of this formatting is "Sat May 20 1995". If the \a format is Qt::ISODate, the string format corresponds to the ISO 8601 extended specification for representations of dates and times, taking the form YYYY-MM-DD, where YYYY is the year, MM is the month of the year (between 01 and 12), and DD is the day of the month between 01 and 31. If the \a format is Qt::SystemLocaleShortDate or Qt::SystemLocaleLongDate, the string format depends on the locale settings of the system. Identical to calling QLocale::system().toString(date, QLocale::ShortFormat) or QLocale::system().toString(date, QLocale::LongFormat). If the \a format is Qt::DefaultLocaleShortDate or Qt::DefaultLocaleLongDate, the string format depends on the default application locale. This is the locale set with QLocale::setDefault(), or the system locale if no default locale has been set. Identical to calling QLocale().toString(date, QLocale::ShortFormat) or QLocale().toString(date, QLocale::LongFormat). If the date is invalid, an empty string will be returned. \warning The Qt::ISODate format is only valid for years in the range 0 to 9999. This restriction may apply to locale-aware formats as well, depending on the locale settings. \sa shortDayName(), shortMonthName() */ QString QDate::toString(Qt::DateFormat f) const { if (!isValid()) return QString(); int y, m, d; getDateFromJulianDay(jd, &y, &m, &d); switch (f) { case Qt::SystemLocaleDate: case Qt::SystemLocaleShortDate: case Qt::SystemLocaleLongDate: return QLocale::system().toString(*this, f == Qt::SystemLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat); case Qt::LocaleDate: case Qt::DefaultLocaleShortDate: case Qt::DefaultLocaleLongDate: return QLocale().toString(*this, f == Qt::DefaultLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat); default: #ifndef QT_NO_TEXTDATE case Qt::TextDate: { return QString::fromLatin1("%0 %1 %2 %3") .arg(shortDayName(dayOfWeek())) .arg(shortMonthName(m)) .arg(d) .arg(y); } #endif case Qt::ISODate: { if (year() < 0 || year() > 9999) return QString(); QString month(QString::number(m).rightJustified(2, QLatin1Char('0'))); QString day(QString::number(d).rightJustified(2, QLatin1Char('0'))); return QString::number(y) + QLatin1Char('-') + month + QLatin1Char('-') + day; } } } /*! Returns the date as a string. The \a format parameter determines the format of the result string. These expressions may be used: \table \header \i Expression \i Output \row \i d \i the day as number without a leading zero (1 to 31) \row \i dd \i the day as number with a leading zero (01 to 31) \row \i ddd \i the abbreviated localized day name (e.g. 'Mon' to 'Sun'). Uses QDate::shortDayName(). \row \i dddd \i the long localized day name (e.g. 'Monday' to 'Sunday'). Uses QDate::longDayName(). \row \i M \i the month as number without a leading zero (1 to 12) \row \i MM \i the month as number with a leading zero (01 to 12) \row \i MMM \i the abbreviated localized month name (e.g. 'Jan' to 'Dec'). Uses QDate::shortMonthName(). \row \i MMMM \i the long localized month name (e.g. 'January' to 'December'). Uses QDate::longMonthName(). \row \i yy \i the year as two digit number (00 to 99) \row \i yyyy \i the year as four digit number. If the year is negative, a minus sign is prepended in addition. \endtable All other input characters will be ignored. Any sequence of characters that are enclosed in singlequotes will be treated as text and not be used as an expression. Two consecutive singlequotes ("''") are replaced by a singlequote in the output. Example format strings (assuming that the QDate is the 20 July 1969): \table \header \o Format \o Result \row \o dd.MM.yyyy \o 20.07.1969 \row \o ddd MMMM d yy \o Sun July 20 69 \row \o 'The day is' dddd \o The day is Sunday \endtable If the datetime is invalid, an empty string will be returned. \warning The Qt::ISODate format is only valid for years in the range 0 to 9999. This restriction may apply to locale-aware formats as well, depending on the locale settings. \sa QDateTime::toString() QTime::toString() */ QString QDate::toString(const QString& format) const { if (year() > 9999) return QString(); return fmtDateTime(format, 0, this); } #endif //QT_NO_DATESTRING /*! \obsolete Sets the date's year \a y, month \a m, and day \a d. If \a y is in the range 0 to 99, it is interpreted as 1900 to 1999. Use setDate() instead. */ bool QDate::setYMD(int y, int m, int d) { if (uint(y) <= 99) y += 1900; return setDate(y, m, d); } /*! \since 4.2 Sets the date's \a year, \a month, and \a day. Returns true if the date is valid; otherwise returns false. If the specified date is invalid, the QDate object is set to be invalid. Any date before 2 January 4713 B.C. is considered invalid. \sa isValid() */ bool QDate::setDate(int year, int month, int day) { if (!isValid(year, month, day)) { jd = 0; } else { jd = julianDayFromDate(year, month, day); } return jd != 0; } /*! \since 4.5 Extracts the date's year, month, and day, and assigns them to *\a year, *\a month, and *\a day. The pointers may be null. \sa year(), month(), day(), isValid() */ void QDate::getDate(int *year, int *month, int *day) { getDateFromJulianDay(jd, year, month, day); } /*! Returns a QDate object containing a date \a ndays later than the date of this object (or earlier if \a ndays is negative). \sa addMonths() addYears() daysTo() */ QDate QDate::addDays(int ndays) const { QDate d; // this is basically "d.jd = jd + ndays" with checks for integer overflow if (ndays >= 0) d.jd = (jd + ndays >= jd) ? jd + ndays : 0; else d.jd = (jd + ndays < jd) ? jd + ndays : 0; return d; } /*! Returns a QDate object containing a date \a nmonths later than the date of this object (or earlier if \a nmonths is negative). \note If the ending day/month combination does not exist in the resulting month/year, this function will return a date that is the latest valid date. \warning QDate has a date hole around the days introducing the Gregorian calendar (the days 5 to 14 October 1582, inclusive, do not exist). If the calculation ends in one of those days, QDate will return either October 4 or October 15. \sa addDays() addYears() */ QDate QDate::addMonths(int nmonths) const { if (!isValid()) return QDate(); if (!nmonths) return *this; int old_y, y, m, d; getDateFromJulianDay(jd, &y, &m, &d); old_y = y; bool increasing = nmonths > 0; while (nmonths != 0) { if (nmonths < 0 && nmonths + 12 <= 0) { y--; nmonths+=12; } else if (nmonths < 0) { m+= nmonths; nmonths = 0; if (m <= 0) { --y; m += 12; } } else if (nmonths - 12 >= 0) { y++; nmonths -= 12; } else if (m == 12) { y++; m = 0; } else { m += nmonths; nmonths = 0; if (m > 12) { ++y; m -= 12; } } } // was there a sign change? if ((old_y > 0 && y <= 0) || (old_y < 0 && y >= 0)) // yes, adjust the date by +1 or -1 years y += increasing ? +1 : -1; // did we end up in the Gregorian/Julian conversion hole? if (y == 1582 && m == 10 && d > 4 && d < 15) d = increasing ? 15 : 4; return fixedDate(y, m, d); } /*! Returns a QDate object containing a date \a nyears later than the date of this object (or earlier if \a nyears is negative). \note If the ending day/month combination does not exist in the resulting year (i.e., if the date was Feb 29 and the final year is not a leap year), this function will return a date that is the latest valid date (that is, Feb 28). \sa addDays(), addMonths() */ QDate QDate::addYears(int nyears) const { if (!isValid()) return QDate(); int y, m, d; getDateFromJulianDay(jd, &y, &m, &d); int old_y = y; y += nyears; // was there a sign change? if ((old_y > 0 && y <= 0) || (old_y < 0 && y >= 0)) // yes, adjust the date by +1 or -1 years y += nyears > 0 ? +1 : -1; return fixedDate(y, m, d); } /*! Returns the number of days from this date to \a d (which is negative if \a d is earlier than this date). Example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 0 \sa addDays() */ int QDate::daysTo(const QDate &d) const { return d.jd - jd; } /*! \fn bool QDate::operator==(const QDate &d) const Returns true if this date is equal to \a d; otherwise returns false. */ /*! \fn bool QDate::operator!=(const QDate &d) const Returns true if this date is different from \a d; otherwise returns false. */ /*! \fn bool QDate::operator<(const QDate &d) const Returns true if this date is earlier than \a d; otherwise returns false. */ /*! \fn bool QDate::operator<=(const QDate &d) const Returns true if this date is earlier than or equal to \a d; otherwise returns false. */ /*! \fn bool QDate::operator>(const QDate &d) const Returns true if this date is later than \a d; otherwise returns false. */ /*! \fn bool QDate::operator>=(const QDate &d) const Returns true if this date is later than or equal to \a d; otherwise returns false. */ /*! \overload Returns the current date, as reported by the system clock. \sa QTime::currentTime(), QDateTime::currentDateTime() */ QDate QDate::currentDate() { QDate d; #if defined(Q_OS_WIN) SYSTEMTIME st; memset(&st, 0, sizeof(SYSTEMTIME)); GetLocalTime(&st); d.jd = julianDayFromDate(st.wYear, st.wMonth, st.wDay); #else // posix compliant system time_t ltime; time(<ime); tm *t = 0; #if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) // use the reentrant version of localtime() where available tzset(); tm res; t = localtime_r(<ime, &res); #else t = localtime(<ime); #endif // !QT_NO_THREAD && _POSIX_THREAD_SAFE_FUNCTIONS d.jd = julianDayFromDate(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday); #endif return d; } #ifndef QT_NO_DATESTRING /*! \fn QDate QDate::fromString(const QString &string, Qt::DateFormat format) Returns the QDate represented by the \a string, using the \a format given, or an invalid date if the string cannot be parsed. Note for Qt::TextDate: It is recommended that you use the English short month names (e.g. "Jan"). Although localized month names can also be used, they depend on the user's locale settings. */ QDate QDate::fromString(const QString& s, Qt::DateFormat f) { if (s.isEmpty()) return QDate(); switch (f) { case Qt::ISODate: { int year(s.mid(0, 4).toInt()); int month(s.mid(5, 2).toInt()); int day(s.mid(8, 2).toInt()); if (year && month && day) return QDate(year, month, day); } break; case Qt::SystemLocaleDate: case Qt::SystemLocaleShortDate: case Qt::SystemLocaleLongDate: return fromString(s, QLocale::system().dateFormat(f == Qt::SystemLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat)); case Qt::LocaleDate: case Qt::DefaultLocaleShortDate: case Qt::DefaultLocaleLongDate: return fromString(s, QLocale().dateFormat(f == Qt::DefaultLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat)); default: #ifndef QT_NO_TEXTDATE case Qt::TextDate: { QStringList parts = s.split(QLatin1Char(' '), QString::SkipEmptyParts); if (parts.count() != 4) { return QDate(); } QString monthName = parts.at(1); int month = -1; // Assume that English monthnames are the default for (int i = 0; i < 12; ++i) { if (monthName == QLatin1String(qt_shortMonthNames[i])) { month = i + 1; break; } } // If English names can't be found, search the localized ones if (month == -1) { for (int i = 1; i <= 12; ++i) { if (monthName == QDate::shortMonthName(i)) { month = i; break; } } } if (month < 1 || month > 12) { return QDate(); } bool ok; int day = parts.at(2).toInt(&ok); if (!ok) { return QDate(); } int year = parts.at(3).toInt(&ok); if (!ok) { return QDate(); } return QDate(year, month, day); } #else break; #endif } return QDate(); } /*! \fn QDate::fromString(const QString &string, const QString &format) Returns the QDate represented by the \a string, using the \a format given, or an invalid date if the string cannot be parsed. These expressions may be used for the format: \table \header \i Expression \i Output \row \i d \i The day as a number without a leading zero (1 to 31) \row \i dd \i The day as a number with a leading zero (01 to 31) \row \i ddd \i The abbreviated localized day name (e.g. 'Mon' to 'Sun'). Uses QDate::shortDayName(). \row \i dddd \i The long localized day name (e.g. 'Monday' to 'Sunday'). Uses QDate::longDayName(). \row \i M \i The month as a number without a leading zero (1 to 12) \row \i MM \i The month as a number with a leading zero (01 to 12) \row \i MMM \i The abbreviated localized month name (e.g. 'Jan' to 'Dec'). Uses QDate::shortMonthName(). \row \i MMMM \i The long localized month name (e.g. 'January' to 'December'). Uses QDate::longMonthName(). \row \i yy \i The year as two digit number (00 to 99) \row \i yyyy \i The year as four digit number. If the year is negative, a minus sign is prepended in addition. \endtable All other input characters will be treated as text. Any sequence of characters that are enclosed in single quotes will also be treated as text and will not be used as an expression. For example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 1 If the format is not satisfied, an invalid QDate is returned. The expressions that don't expect leading zeroes (d, M) will be greedy. This means that they will use two digits even if this will put them outside the accepted range of values and leaves too few digits for other sections. For example, the following format string could have meant January 30 but the M will grab two digits, resulting in an invalid date: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 2 For any field that is not represented in the format the following defaults are used: \table \header \i Field \i Default value \row \i Year \i 1900 \row \i Month \i 1 \row \i Day \i 1 \endtable The following examples demonstrate the default values: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 3 \sa QDateTime::fromString(), QTime::fromString(), QDate::toString(), QDateTime::toString(), QTime::toString() */ QDate QDate::fromString(const QString &string, const QString &format) { QDate date; #ifndef QT_BOOTSTRAPPED QDateTimeParser dt(QVariant::Date, QDateTimeParser::FromString); if (dt.parseFormat(format)) dt.fromString(string, &date, 0); #else Q_UNUSED(string); Q_UNUSED(format); #endif return date; } #endif // QT_NO_DATESTRING /*! \overload Returns true if the specified date (\a year, \a month, and \a day) is valid; otherwise returns false. Example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 4 \sa isNull(), setDate() */ bool QDate::isValid(int year, int month, int day) { if (year < FIRST_YEAR || (year == FIRST_YEAR && (month < FIRST_MONTH || (month == FIRST_MONTH && day < FIRST_DAY))) || year == 0) // there is no year 0 in the Julian calendar return false; // passage from Julian to Gregorian calendar if (year == 1582 && month == 10 && day > 4 && day < 15) return 0; return (day > 0 && month > 0 && month <= 12) && (day <= monthDays[month] || (day == 29 && month == 2 && isLeapYear(year))); } /*! \fn bool QDate::isLeapYear(int year) Returns true if the specified \a year is a leap year; otherwise returns false. */ bool QDate::isLeapYear(int y) { if (y < 1582) { return qAbs(y) % 4 == 0; } else { return (y % 4 == 0 && y % 100 != 0) || y % 400 == 0; } } /*! \internal This function has a confusing name and shouldn't be part of the API anyway, since we have toJulian() and fromJulian(). ### Qt 5: remove it */ uint QDate::gregorianToJulian(int y, int m, int d) { return julianDayFromDate(y, m, d); } /*! \internal This function has a confusing name and shouldn't be part of the API anyway, since we have toJulian() and fromJulian(). ### Qt 5: remove it */ void QDate::julianToGregorian(uint jd, int &y, int &m, int &d) { getDateFromJulianDay(jd, &y, &m, &d); } /*! \fn static QDate QDate::fromJulianDay(int jd) Converts the Julian day \a jd to a QDate. \sa toJulianDay() */ /*! \fn int QDate::toJulianDay() const Converts the date to a Julian day. \sa fromJulianDay() */ /***************************************************************************** QTime member functions *****************************************************************************/ /*! \class QTime \reentrant \brief The QTime class provides clock time functions. A QTime object contains a clock time, i.e. the number of hours, minutes, seconds, and milliseconds since midnight. It can read the current time from the system clock and measure a span of elapsed time. It provides functions for comparing times and for manipulating a time by adding a number of milliseconds. QTime uses the 24-hour clock format; it has no concept of AM/PM. Unlike QDateTime, QTime knows nothing about time zones or daylight savings time (DST). A QTime object is typically created either by giving the number of hours, minutes, seconds, and milliseconds explicitly, or by using the static function currentTime(), which creates a QTime object that contains the system's local time. Note that the accuracy depends on the accuracy of the underlying operating system; not all systems provide 1-millisecond accuracy. The hour(), minute(), second(), and msec() functions provide access to the number of hours, minutes, seconds, and milliseconds of the time. The same information is provided in textual format by the toString() function. QTime provides a full set of operators to compare two QTime objects. One time is considered smaller than another if it is earlier than the other. The time a given number of seconds or milliseconds later than a given time can be found using the addSecs() or addMSecs() functions. Correspondingly, the number of seconds or milliseconds between two times can be found using secsTo() or msecsTo(). QTime can be used to measure a span of elapsed time using the start(), restart(), and elapsed() functions. \sa QDate, QDateTime */ /*! \fn QTime::QTime() Constructs a null time object. A null time can be a QTime(0, 0, 0, 0) (i.e., midnight) object, except that isNull() returns true and isValid() returns false. \sa isNull(), isValid() */ /*! Constructs a time with hour \a h, minute \a m, seconds \a s and milliseconds \a ms. \a h must be in the range 0 to 23, \a m and \a s must be in the range 0 to 59, and \a ms must be in the range 0 to 999. \sa isValid() */ QTime::QTime(int h, int m, int s, int ms) { setHMS(h, m, s, ms); } /*! \fn bool QTime::isNull() const Returns true if the time is null (i.e., the QTime object was constructed using the default constructor); otherwise returns false. A null time is also an invalid time. \sa isValid() */ /*! Returns true if the time is valid; otherwise returns false. For example, the time 23:30:55.746 is valid, but 24:12:30 is invalid. \sa isNull() */ bool QTime::isValid() const { return mds > NullTime && mds < MSECS_PER_DAY; } /*! Returns the hour part (0 to 23) of the time. \sa minute(), second(), msec() */ int QTime::hour() const { return ds() / MSECS_PER_HOUR; } /*! Returns the minute part (0 to 59) of the time. \sa hour(), second(), msec() */ int QTime::minute() const { return (ds() % MSECS_PER_HOUR) / MSECS_PER_MIN; } /*! Returns the second part (0 to 59) of the time. \sa hour(), minute(), msec() */ int QTime::second() const { return (ds() / 1000)%SECS_PER_MIN; } /*! Returns the millisecond part (0 to 999) of the time. \sa hour(), minute(), second() */ int QTime::msec() const { return ds() % 1000; } #ifndef QT_NO_DATESTRING /*! \overload Returns the time as a string. Milliseconds are not included. The \a format parameter determines the format of the string. If \a format is Qt::TextDate, the string format is HH:MM:SS; e.g. 1 second before midnight would be "23:59:59". If \a format is Qt::ISODate, the string format corresponds to the ISO 8601 extended specification for representations of dates, which is also HH:MM:SS. (However, contrary to ISO 8601, dates before 15 October 1582 are handled as Julian dates, not Gregorian dates. See \l{QDate G and J} {Use of Gregorian and Julian Calendars}. This might change in a future version of Qt.) If the \a format is Qt::SystemLocaleShortDate or Qt::SystemLocaleLongDate, the string format depends on the locale settings of the system. Identical to calling QLocale::system().toString(time, QLocale::ShortFormat) or QLocale::system().toString(time, QLocale::LongFormat). If the \a format is Qt::DefaultLocaleShortDate or Qt::DefaultLocaleLongDate, the string format depends on the default application locale. This is the locale set with QLocale::setDefault(), or the system locale if no default locale has been set. Identical to calling QLocale().toString(time, QLocale::ShortFormat) or QLocale().toString(time, QLocale::LongFormat). If the time is invalid, an empty string will be returned. */ QString QTime::toString(Qt::DateFormat format) const { if (!isValid()) return QString(); switch (format) { case Qt::SystemLocaleDate: case Qt::SystemLocaleShortDate: case Qt::SystemLocaleLongDate: return QLocale::system().toString(*this, format == Qt::SystemLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat); case Qt::LocaleDate: case Qt::DefaultLocaleShortDate: case Qt::DefaultLocaleLongDate: return QLocale().toString(*this, format == Qt::DefaultLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat); default: case Qt::ISODate: case Qt::TextDate: return QString::fromLatin1("%1:%2:%3") .arg(hour(), 2, 10, QLatin1Char('0')) .arg(minute(), 2, 10, QLatin1Char('0')) .arg(second(), 2, 10, QLatin1Char('0')); } } /*! Returns the time as a string. The \a format parameter determines the format of the result string. These expressions may be used: \table \header \i Expression \i Output \row \i h \i the hour without a leading zero (0 to 23 or 1 to 12 if AM/PM display) \row \i hh \i the hour with a leading zero (00 to 23 or 01 to 12 if AM/PM display) \row \i H \i the hour without a leading zero (0 to 23, even with AM/PM display) \row \i HH \i the hour with a leading zero (00 to 23, even with AM/PM display) \row \i m \i the minute without a leading zero (0 to 59) \row \i mm \i the minute with a leading zero (00 to 59) \row \i s \i the second without a leading zero (0 to 59) \row \i ss \i the second with a leading zero (00 to 59) \row \i z \i the milliseconds without leading zeroes (0 to 999) \row \i zzz \i the milliseconds with leading zeroes (000 to 999) \row \i AP or A \i use AM/PM display. \e AP will be replaced by either "AM" or "PM". \row \i ap or a \i use am/pm display. \e ap will be replaced by either "am" or "pm". \endtable All other input characters will be ignored. Any sequence of characters that are enclosed in singlequotes will be treated as text and not be used as an expression. Two consecutive singlequotes ("''") are replaced by a singlequote in the output. Example format strings (assuming that the QTime is 14:13:09.042) \table \header \i Format \i Result \row \i hh:mm:ss.zzz \i 14:13:09.042 \row \i h:m:s ap \i 2:13:9 pm \row \i H:m:s a \i 14:13:9 pm \endtable If the datetime is invalid, an empty string will be returned. \sa QDate::toString() QDateTime::toString() */ QString QTime::toString(const QString& format) const { return fmtDateTime(format, this, 0); } #endif //QT_NO_DATESTRING /*! Sets the time to hour \a h, minute \a m, seconds \a s and milliseconds \a ms. \a h must be in the range 0 to 23, \a m and \a s must be in the range 0 to 59, and \a ms must be in the range 0 to 999. Returns true if the set time is valid; otherwise returns false. \sa isValid() */ bool QTime::setHMS(int h, int m, int s, int ms) { #if defined(Q_OS_WINCE) startTick = NullTime; #endif if (!isValid(h,m,s,ms)) { mds = NullTime; // make this invalid return false; } mds = (h*SECS_PER_HOUR + m*SECS_PER_MIN + s)*1000 + ms; return true; } /*! Returns a QTime object containing a time \a s seconds later than the time of this object (or earlier if \a s is negative). Note that the time will wrap if it passes midnight. Example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 5 \sa addMSecs(), secsTo(), QDateTime::addSecs() */ QTime QTime::addSecs(int s) const { return addMSecs(s * 1000); } /*! Returns the number of seconds from this time to \a t. If \a t is earlier than this time, the number of seconds returned is negative. Because QTime measures time within a day and there are 86400 seconds in a day, the result is always between -86400 and 86400. secsTo() does not take into account any milliseconds. \sa addSecs(), QDateTime::secsTo() */ int QTime::secsTo(const QTime &t) const { return (t.ds() - ds()) / 1000; } /*! Returns a QTime object containing a time \a ms milliseconds later than the time of this object (or earlier if \a ms is negative). Note that the time will wrap if it passes midnight. See addSecs() for an example. \sa addSecs(), msecsTo() */ QTime QTime::addMSecs(int ms) const { QTime t; if (ms < 0) { // % not well-defined for -ve, but / is. int negdays = (MSECS_PER_DAY - ms) / MSECS_PER_DAY; t.mds = (ds() + ms + negdays * MSECS_PER_DAY) % MSECS_PER_DAY; } else { t.mds = (ds() + ms) % MSECS_PER_DAY; } #if defined(Q_OS_WINCE) if (startTick > NullTime) t.startTick = (startTick + ms) % MSECS_PER_DAY; #endif return t; } /*! Returns the number of milliseconds from this time to \a t. If \a t is earlier than this time, the number of milliseconds returned is negative. Because QTime measures time within a day and there are 86400 seconds in a day, the result is always between -86400000 and 86400000 ms. \sa secsTo(), addMSecs() */ int QTime::msecsTo(const QTime &t) const { #if defined(Q_OS_WINCE) // GetLocalTime() for Windows CE has no milliseconds resolution if (t.startTick > NullTime && startTick > NullTime) return t.startTick - startTick; else #endif return t.ds() - ds(); } /*! \fn bool QTime::operator==(const QTime &t) const Returns true if this time is equal to \a t; otherwise returns false. */ /*! \fn bool QTime::operator!=(const QTime &t) const Returns true if this time is different from \a t; otherwise returns false. */ /*! \fn bool QTime::operator<(const QTime &t) const Returns true if this time is earlier than \a t; otherwise returns false. */ /*! \fn bool QTime::operator<=(const QTime &t) const Returns true if this time is earlier than or equal to \a t; otherwise returns false. */ /*! \fn bool QTime::operator>(const QTime &t) const Returns true if this time is later than \a t; otherwise returns false. */ /*! \fn bool QTime::operator>=(const QTime &t) const Returns true if this time is later than or equal to \a t; otherwise returns false. */ /*! \overload Returns the current time as reported by the system clock. Note that the accuracy depends on the accuracy of the underlying operating system; not all systems provide 1-millisecond accuracy. */ QTime QTime::currentTime() { QTime ct; #if defined(Q_OS_WIN) SYSTEMTIME st; memset(&st, 0, sizeof(SYSTEMTIME)); GetLocalTime(&st); ct.mds = MSECS_PER_HOUR * st.wHour + MSECS_PER_MIN * st.wMinute + 1000 * st.wSecond + st.wMilliseconds; #if defined(Q_OS_WINCE) ct.startTick = GetTickCount() % MSECS_PER_DAY; #endif #elif defined(Q_OS_UNIX) // posix compliant system struct timeval tv; gettimeofday(&tv, 0); time_t ltime = tv.tv_sec; tm *t = 0; #if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) // use the reentrant version of localtime() where available tzset(); tm res; t = localtime_r(<ime, &res); #else t = localtime(<ime); #endif Q_CHECK_PTR(t); ct.mds = MSECS_PER_HOUR * t->tm_hour + MSECS_PER_MIN * t->tm_min + 1000 * t->tm_sec + tv.tv_usec / 1000; #else time_t ltime; // no millisecond resolution ::time(<ime); const tm *const t = localtime(<ime); ct.mds = MSECS_PER_HOUR * t->tm_hour + MSECS_PER_MIN * t->tm_min + 1000 * t->tm_sec; #endif return ct; } #ifndef QT_NO_DATESTRING /*! \fn QTime QTime::fromString(const QString &string, Qt::DateFormat format) Returns the time represented in the \a string as a QTime using the \a format given, or an invalid time if this is not possible. Note that fromString() uses a "C" locale encoded string to convert milliseconds to a float value. If the default locale is not "C", this may result in two conversion attempts (if the conversion fails for the default locale). This should be considered an implementation detail. */ QTime QTime::fromString(const QString& s, Qt::DateFormat f) { if (s.isEmpty()) { QTime t; t.mds = NullTime; return t; } switch (f) { case Qt::SystemLocaleDate: case Qt::SystemLocaleShortDate: case Qt::SystemLocaleLongDate: return fromString(s, QLocale::system().timeFormat(f == Qt::SystemLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat)); case Qt::LocaleDate: case Qt::DefaultLocaleShortDate: case Qt::DefaultLocaleLongDate: return fromString(s, QLocale().timeFormat(f == Qt::DefaultLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat)); default: { bool ok = true; const int hour(s.mid(0, 2).toInt(&ok)); if (!ok) return QTime(); const int minute(s.mid(3, 2).toInt(&ok)); if (!ok) return QTime(); const int second(s.mid(6, 2).toInt(&ok)); if (!ok) return QTime(); const QString msec_s(QLatin1String("0.") + s.mid(9, 4)); const float msec(msec_s.toFloat(&ok)); if (!ok) return QTime(); return QTime(hour, minute, second, qMin(qRound(msec * 1000.0), 999)); } } } /*! \fn QTime::fromString(const QString &string, const QString &format) Returns the QTime represented by the \a string, using the \a format given, or an invalid time if the string cannot be parsed. These expressions may be used for the format: \table \header \i Expression \i Output \row \i h \i the hour without a leading zero (0 to 23 or 1 to 12 if AM/PM display) \row \i hh \i the hour with a leading zero (00 to 23 or 01 to 12 if AM/PM display) \row \i m \i the minute without a leading zero (0 to 59) \row \i mm \i the minute with a leading zero (00 to 59) \row \i s \i the second without a leading zero (0 to 59) \row \i ss \i the second with a leading zero (00 to 59) \row \i z \i the milliseconds without leading zeroes (0 to 999) \row \i zzz \i the milliseconds with leading zeroes (000 to 999) \row \i AP \i interpret as an AM/PM time. \e AP must be either "AM" or "PM". \row \i ap \i Interpret as an AM/PM time. \e ap must be either "am" or "pm". \endtable All other input characters will be treated as text. Any sequence of characters that are enclosed in single quotes will also be treated as text and not be used as an expression. \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 6 If the format is not satisfied an invalid QTime is returned. Expressions that do not expect leading zeroes to be given (h, m, s and z) are greedy. This means that they will use two digits even if this puts them outside the range of accepted values and leaves too few digits for other sections. For example, the following string could have meant 00:07:10, but the m will grab two digits, resulting in an invalid time: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 7 Any field that is not represented in the format will be set to zero. For example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 8 \sa QDateTime::fromString() QDate::fromString() QDate::toString() QDateTime::toString() QTime::toString() */ QTime QTime::fromString(const QString &string, const QString &format) { QTime time; #ifndef QT_BOOTSTRAPPED QDateTimeParser dt(QVariant::Time, QDateTimeParser::FromString); if (dt.parseFormat(format)) dt.fromString(string, 0, &time); #else Q_UNUSED(string); Q_UNUSED(format); #endif return time; } #endif // QT_NO_DATESTRING /*! \overload Returns true if the specified time is valid; otherwise returns false. The time is valid if \a h is in the range 0 to 23, \a m and \a s are in the range 0 to 59, and \a ms is in the range 0 to 999. Example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 9 */ bool QTime::isValid(int h, int m, int s, int ms) { return (uint)h < 24 && (uint)m < 60 && (uint)s < 60 && (uint)ms < 1000; } /*! Sets this time to the current time. This is practical for timing: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 10 \sa restart(), elapsed(), currentTime() */ void QTime::start() { *this = currentTime(); } /*! Sets this time to the current time and returns the number of milliseconds that have elapsed since the last time start() or restart() was called. This function is guaranteed to be atomic and is thus very handy for repeated measurements. Call start() to start the first measurement, and restart() for each later measurement. Note that the counter wraps to zero 24 hours after the last call to start() or restart(). \warning If the system's clock setting has been changed since the last time start() or restart() was called, the result is undefined. This can happen when daylight savings time is turned on or off. \sa start(), elapsed(), currentTime() */ int QTime::restart() { QTime t = currentTime(); int n = msecsTo(t); if (n < 0) // passed midnight n += 86400*1000; *this = t; return n; } /*! Returns the number of milliseconds that have elapsed since the last time start() or restart() was called. Note that the counter wraps to zero 24 hours after the last call to start() or restart. Note that the accuracy depends on the accuracy of the underlying operating system; not all systems provide 1-millisecond accuracy. \warning If the system's clock setting has been changed since the last time start() or restart() was called, the result is undefined. This can happen when daylight savings time is turned on or off. \sa start(), restart() */ int QTime::elapsed() const { int n = msecsTo(currentTime()); if (n < 0) // passed midnight n += 86400 * 1000; return n; } /***************************************************************************** QDateTime member functions *****************************************************************************/ /*! \class QDateTime \reentrant \brief The QDateTime class provides date and time functions. A QDateTime object contains a calendar date and a clock time (a "datetime"). It is a combination of the QDate and QTime classes. It can read the current datetime from the system clock. It provides functions for comparing datetimes and for manipulating a datetime by adding a number of seconds, days, months, or years. A QDateTime object is typically created either by giving a date and time explicitly in the constructor, or by using the static function currentDateTime() that returns a QDateTime object set to the system clock's time. The date and time can be changed with setDate() and setTime(). A datetime can also be set using the setTime_t() function that takes a POSIX-standard "number of seconds since 00:00:00 on January 1, 1970" value. The fromString() function returns a QDateTime, given a string and a date format used to interpret the date within the string. The date() and time() functions provide access to the date and time parts of the datetime. The same information is provided in textual format by the toString() function. QDateTime provides a full set of operators to compare two QDateTime objects where smaller means earlier and larger means later. You can increment (or decrement) a datetime by a given number of seconds using addSecs(), or days using addDays(). Similarly you can use addMonths() and addYears(). The daysTo() function returns the number of days between two datetimes, and secsTo() returns the number of seconds between two datetimes. QDateTime can store datetimes as \l{Qt::LocalTime}{local time} or as \l{Qt::UTC}{UTC}. QDateTime::currentDateTime() returns a QDateTime expressed as local time; use toUTC() to convert it to UTC. You can also use timeSpec() to find out if a QDateTime object stores a UTC time or a local time. Operations such as addSecs() and secsTo() are aware of daylight saving time (DST). \note QDateTime does not account for leap seconds. \section1 \target QDateTime G and J \section2 Use of Gregorian and Julian Calendars QDate uses the Gregorian calendar in all locales, beginning on the date 15 October 1582. For dates up to and including 4 October 1582, the Julian calendar is used. This means there is a 10-day gap in the internal calendar between the 4th and the 15th of October 1582. When you use QDateTime for dates in that epoch, the day after 4 October 1582 is 15 October 1582, and the dates in the gap are invalid. The Julian to Gregorian changeover date used here is the date when the Gregorian calendar was first introduced, by Pope Gregory XIII. That change was not universally accepted and some localities only executed it at a later date (if at all). QDateTime doesn't take any of these historical facts into account. If an application must support a locale-specific dating system, it must do so on its own, remembering to convert the dates using the Julian day. \section2 No Year 0 There is no year 0. Dates in that year are considered invalid. The year -1 is the year "1 before Christ" or "1 before current era." The day before 0001-01-01 is December 31st, 1 BCE. \section2 Range of Valid Dates The range of valid dates is from January 2nd, 4713 BCE, to sometime in the year 11 million CE. The Julian Day returned by QDate::toJulianDay() is a number in the contiguous range from 1 to \e{overflow}, even across QDateTime's "date holes". It is suitable for use in applications that must convert a QDateTime to a date in another calendar system, e.g., Hebrew, Islamic or Chinese. The Gregorian calendar was introduced in different places around the world on different dates. QDateTime uses QDate to store the date, so it uses the Gregorian calendar for all locales, beginning on the date 15 October 1582. For dates up to and including 4 October 1582, QDateTime uses the Julian calendar. This means there is a 10-day gap in the QDateTime calendar between the 4th and the 15th of October 1582. When you use QDateTime for dates in that epoch, the day after 4 October 1582 is 15 October 1582, and the dates in the gap are invalid. \section2 Use of System Timezone QDateTime uses the system's time zone information to determine the offset of local time from UTC. If the system is not configured correctly or not up-to-date, QDateTime will give wrong results as well. \section2 Daylight Savings Time (DST) QDateTime takes into account the system's time zone information when dealing with DST. On modern Unix systems, this means it applies the correct historical DST data whenever possible. On Windows and Windows CE, where the system doesn't support historical DST data, historical accuracy is not maintained with respect to DST. The range of valid dates taking DST into account is 1970-01-01 to the present, and rules are in place for handling DST correctly until 2037-12-31, but these could change. For dates falling outside that range, QDateTime makes a \e{best guess} using the rules for year 1970 or 2037, but we can't guarantee accuracy. This means QDateTime doesn't take into account changes in a locale's time zone before 1970, even if the system's time zone database supports that information. \sa QDate QTime QDateTimeEdit */ /*! Constructs a null datetime (i.e. null date and null time). A null datetime is invalid, since the date is invalid. \sa isValid() */ QDateTime::QDateTime() : d(new QDateTimePrivate) { } /*! Constructs a datetime with the given \a date, a valid time(00:00:00.000), and sets the timeSpec() to Qt::LocalTime. */ QDateTime::QDateTime(const QDate &date) : d(new QDateTimePrivate) { d->date = date; d->time = QTime(0, 0, 0); } /*! Constructs a datetime with the given \a date and \a time, using the time specification defined by \a spec. If \a date is valid and \a time is not, the time will be set to midnight. */ QDateTime::QDateTime(const QDate &date, const QTime &time, Qt::TimeSpec spec) : d(new QDateTimePrivate) { d->date = date; d->time = date.isValid() && !time.isValid() ? QTime(0, 0, 0) : time; d->spec = (spec == Qt::UTC) ? QDateTimePrivate::UTC : QDateTimePrivate::LocalUnknown; } /*! Constructs a copy of the \a other datetime. */ QDateTime::QDateTime(const QDateTime &other) : d(other.d) { } /*! Destroys the datetime. */ QDateTime::~QDateTime() { } /*! Makes a copy of the \a other datetime and returns a reference to the copy. */ QDateTime &QDateTime::operator=(const QDateTime &other) { d = other.d; return *this; } /*! Returns true if both the date and the time are null; otherwise returns false. A null datetime is invalid. \sa QDate::isNull(), QTime::isNull(), isValid() */ bool QDateTime::isNull() const { return d->date.isNull() && d->time.isNull(); } /*! Returns true if both the date and the time are valid; otherwise returns false. \sa QDate::isValid(), QTime::isValid() */ bool QDateTime::isValid() const { return d->date.isValid() && d->time.isValid(); } /*! Returns the date part of the datetime. \sa setDate(), time(), timeSpec() */ QDate QDateTime::date() const { return d->date; } /*! Returns the time part of the datetime. \sa setTime(), date(), timeSpec() */ QTime QDateTime::time() const { return d->time; } /*! Returns the time specification of the datetime. \sa setTimeSpec(), date(), time(), Qt::TimeSpec */ Qt::TimeSpec QDateTime::timeSpec() const { switch(d->spec) { case QDateTimePrivate::UTC: return Qt::UTC; case QDateTimePrivate::OffsetFromUTC: return Qt::OffsetFromUTC; default: return Qt::LocalTime; } } /*! Sets the date part of this datetime to \a date. If no time is set, it is set to midnight. \sa date(), setTime(), setTimeSpec() */ void QDateTime::setDate(const QDate &date) { detach(); d->date = date; if (d->spec == QDateTimePrivate::LocalStandard || d->spec == QDateTimePrivate::LocalDST) d->spec = QDateTimePrivate::LocalUnknown; if (date.isValid() && !d->time.isValid()) d->time = QTime(0, 0, 0); } /*! Sets the time part of this datetime to \a time. \sa time(), setDate(), setTimeSpec() */ void QDateTime::setTime(const QTime &time) { detach(); if (d->spec == QDateTimePrivate::LocalStandard || d->spec == QDateTimePrivate::LocalDST) d->spec = QDateTimePrivate::LocalUnknown; d->time = time; } /*! Sets the time specification used in this datetime to \a spec. \sa timeSpec(), setDate(), setTime(), Qt::TimeSpec */ void QDateTime::setTimeSpec(Qt::TimeSpec spec) { detach(); switch(spec) { case Qt::UTC: d->spec = QDateTimePrivate::UTC; break; case Qt::OffsetFromUTC: d->spec = QDateTimePrivate::OffsetFromUTC; break; default: d->spec = QDateTimePrivate::LocalUnknown; break; } } static uint toTime_tHelper(const QDate &utcDate, const QTime &utcTime) { int days = QDate(1970, 1, 1).daysTo(utcDate); int secs = QTime().secsTo(utcTime); if (days < 0 || (days == 0 && secs < 0)) return uint(-1); qlonglong retval = (qlonglong(days) * SECS_PER_DAY) + secs; if (retval >= Q_INT64_C(0xFFFFFFFF)) return uint(-1); return uint(retval); } /*! Returns the datetime as the number of seconds that have passed since 1970-01-01T00:00:00, Coordinated Universal Time (Qt::UTC). On systems that do not support time zones, this function will behave as if local time were Qt::UTC. \sa setTime_t() */ uint QDateTime::toTime_t() const { QDate utcDate; QTime utcTime; d->getUTC(utcDate, utcTime); return toTime_tHelper(utcDate, utcTime); } /*! \fn void QDateTime::setTime_t(uint seconds) Sets the date and time given the number of \a seconds that have passed since 1970-01-01T00:00:00, Coordinated Universal Time (Qt::UTC). On systems that do not support time zones this function will behave as if local time were Qt::UTC. \sa toTime_t() */ void QDateTime::setTime_t(uint secsSince1Jan1970UTC) { detach(); QDateTimePrivate::Spec oldSpec = d->spec; d->date = QDate(1970, 1, 1).addDays(secsSince1Jan1970UTC / SECS_PER_DAY); d->time = QTime().addSecs(secsSince1Jan1970UTC % SECS_PER_DAY); d->spec = QDateTimePrivate::UTC; if (oldSpec != QDateTimePrivate::UTC) d->spec = d->getLocal(d->date, d->time); } #ifndef QT_NO_DATESTRING /*! \fn QString QDateTime::toString(Qt::DateFormat format) const \overload Returns the datetime as a string in the \a format given. If the \a format is Qt::TextDate, the string is formatted in the default way. QDate::shortDayName(), QDate::shortMonthName(), and QTime::toString() are used to generate the string, so the day and month names will be localized names. An example of this formatting is "Wed May 20 03:40:13 1998". If the \a format is Qt::ISODate, the string format corresponds to the ISO 8601 extended specification for representations of dates and times, taking the form YYYY-MM-DDTHH:MM:SS. If the \a format is Qt::SystemLocaleShortDate or Qt::SystemLocaleLongDate, the string format depends on the locale settings of the system. Identical to calling QLocale::system().toString(datetime, QLocale::ShortFormat) or QLocale::system().toString(datetime, QLocale::LongFormat). If the \a format is Qt::DefaultLocaleShortDate or Qt::DefaultLocaleLongDate, the string format depends on the default application locale. This is the locale set with QLocale::setDefault(), or the system locale if no default locale has been set. Identical to calling QLocale().toString(datetime, QLocale::ShortFormat) or QLocale().toString(datetime, QLocale::LongFormat). If the datetime is invalid, an empty string will be returned. \warning The Qt::ISODate format is only valid for years in the range 0 to 9999. This restriction may apply to locale-aware formats as well, depending on the locale settings. \sa QDate::toString() QTime::toString() Qt::DateFormat */ QString QDateTime::toString(Qt::DateFormat f) const { QString buf; if (!isValid()) return buf; if (f == Qt::ISODate) { buf = d->date.toString(Qt::ISODate); if (buf.isEmpty()) return QString(); // failed to convert buf += QLatin1Char('T'); buf += d->time.toString(Qt::ISODate); } #ifndef QT_NO_TEXTDATE else if (f == Qt::TextDate) { #ifndef Q_WS_WIN buf = d->date.shortDayName(d->date.dayOfWeek()); buf += QLatin1Char(' '); buf += d->date.shortMonthName(d->date.month()); buf += QLatin1Char(' '); buf += QString::number(d->date.day()); #else wchar_t out[255]; GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_ILDATE, out, 255); QString winstr = QString::fromWCharArray(out); switch (winstr.toInt()) { case 1: buf = d->date.shortDayName(d->date.dayOfWeek()); buf += QLatin1Char(' '); buf += QString::number(d->date.day()); buf += QLatin1String(". "); buf += d->date.shortMonthName(d->date.month()); break; default: buf = d->date.shortDayName(d->date.dayOfWeek()); buf += QLatin1Char(' '); buf += d->date.shortMonthName(d->date.month()); buf += QLatin1Char(' '); buf += QString::number(d->date.day()); } #endif buf += QLatin1Char(' '); buf += d->time.toString(); buf += QLatin1Char(' '); buf += QString::number(d->date.year()); } #endif else { buf = d->date.toString(f); if (buf.isEmpty()) return QString(); // failed to convert buf += QLatin1Char(' '); buf += d->time.toString(f); } return buf; } /*! Returns the datetime as a string. The \a format parameter determines the format of the result string. These expressions may be used for the date: \table \header \i Expression \i Output \row \i d \i the day as number without a leading zero (1 to 31) \row \i dd \i the day as number with a leading zero (01 to 31) \row \i ddd \i the abbreviated localized day name (e.g. 'Mon' to 'Sun'). Uses QDate::shortDayName(). \row \i dddd \i the long localized day name (e.g. 'Monday' to 'Qt::Sunday'). Uses QDate::longDayName(). \row \i M \i the month as number without a leading zero (1-12) \row \i MM \i the month as number with a leading zero (01-12) \row \i MMM \i the abbreviated localized month name (e.g. 'Jan' to 'Dec'). Uses QDate::shortMonthName(). \row \i MMMM \i the long localized month name (e.g. 'January' to 'December'). Uses QDate::longMonthName(). \row \i yy \i the year as two digit number (00-99) \row \i yyyy \i the year as four digit number \endtable These expressions may be used for the time: \table \header \i Expression \i Output \row \i h \i the hour without a leading zero (0 to 23 or 1 to 12 if AM/PM display) \row \i hh \i the hour with a leading zero (00 to 23 or 01 to 12 if AM/PM display) \row \i m \i the minute without a leading zero (0 to 59) \row \i mm \i the minute with a leading zero (00 to 59) \row \i s \i the second without a leading zero (0 to 59) \row \i ss \i the second with a leading zero (00 to 59) \row \i z \i the milliseconds without leading zeroes (0 to 999) \row \i zzz \i the milliseconds with leading zeroes (000 to 999) \row \i AP \i use AM/PM display. \e AP will be replaced by either "AM" or "PM". \row \i ap \i use am/pm display. \e ap will be replaced by either "am" or "pm". \endtable All other input characters will be ignored. Any sequence of characters that are enclosed in singlequotes will be treated as text and not be used as an expression. Two consecutive singlequotes ("''") are replaced by a singlequote in the output. Example format strings (assumed that the QDateTime is 21 May 2001 14:13:09): \table \header \i Format \i Result \row \i dd.MM.yyyy \i 21.05.2001 \row \i ddd MMMM d yy \i Tue May 21 01 \row \i hh:mm:ss.zzz \i 14:13:09.042 \row \i h:m:s ap \i 2:13:9 pm \endtable If the datetime is invalid, an empty string will be returned. \sa QDate::toString() QTime::toString() */ QString QDateTime::toString(const QString& format) const { return fmtDateTime(format, &d->time, &d->date); } #endif //QT_NO_DATESTRING /*! Returns a QDateTime object containing a datetime \a ndays days later than the datetime of this object (or earlier if \a ndays is negative). \sa daysTo(), addMonths(), addYears(), addSecs() */ QDateTime QDateTime::addDays(int ndays) const { return QDateTime(d->date.addDays(ndays), d->time, timeSpec()); } /*! Returns a QDateTime object containing a datetime \a nmonths months later than the datetime of this object (or earlier if \a nmonths is negative). \sa daysTo(), addDays(), addYears(), addSecs() */ QDateTime QDateTime::addMonths(int nmonths) const { return QDateTime(d->date.addMonths(nmonths), d->time, timeSpec()); } /*! Returns a QDateTime object containing a datetime \a nyears years later than the datetime of this object (or earlier if \a nyears is negative). \sa daysTo(), addDays(), addMonths(), addSecs() */ QDateTime QDateTime::addYears(int nyears) const { return QDateTime(d->date.addYears(nyears), d->time, timeSpec()); } QDateTime QDateTimePrivate::addMSecs(const QDateTime &dt, qint64 msecs) { QDate utcDate; QTime utcTime; dt.d->getUTC(utcDate, utcTime); addMSecs(utcDate, utcTime, msecs); return QDateTime(utcDate, utcTime, Qt::UTC).toTimeSpec(dt.timeSpec()); } /*! Adds \a msecs to utcDate and \a utcTime as appropriate. It is assumed that utcDate and utcTime are adjusted to UTC. \since 4.5 \internal */ void QDateTimePrivate::addMSecs(QDate &utcDate, QTime &utcTime, qint64 msecs) { uint dd = utcDate.jd; int tt = utcTime.ds(); int sign = 1; if (msecs < 0) { msecs = -msecs; sign = -1; } if (msecs >= int(MSECS_PER_DAY)) { dd += sign * (msecs / MSECS_PER_DAY); msecs %= MSECS_PER_DAY; } tt += sign * msecs; if (tt < 0) { tt = MSECS_PER_DAY - tt - 1; dd -= tt / MSECS_PER_DAY; tt = tt % MSECS_PER_DAY; tt = MSECS_PER_DAY - tt - 1; } else if (tt >= int(MSECS_PER_DAY)) { dd += tt / MSECS_PER_DAY; tt = tt % MSECS_PER_DAY; } utcDate.jd = dd; utcTime.mds = tt; } /*! Returns a QDateTime object containing a datetime \a s seconds later than the datetime of this object (or earlier if \a s is negative). \sa addMSecs(), secsTo(), addDays(), addMonths(), addYears() */ QDateTime QDateTime::addSecs(int s) const { return d->addMSecs(*this, qint64(s) * 1000); } /*! Returns a QDateTime object containing a datetime \a msecs miliseconds later than the datetime of this object (or earlier if \a msecs is negative). \sa addSecs(), secsTo(), addDays(), addMonths(), addYears() */ QDateTime QDateTime::addMSecs(qint64 msecs) const { return d->addMSecs(*this, msecs); } /*! Returns the number of days from this datetime to the \a other datetime. If the \a other datetime is earlier than this datetime, the value returned is negative. \sa addDays(), secsTo() */ int QDateTime::daysTo(const QDateTime &other) const { return d->date.daysTo(other.d->date); } /*! Returns the number of seconds from this datetime to the \a other datetime. If the \a other datetime is earlier than this datetime, the value returned is negative. Before performing the comparison, the two datetimes are converted to Qt::UTC to ensure that the result is correct if one of the two datetimes has daylight saving time (DST) and the other doesn't. Example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 11 \sa addSecs(), daysTo(), QTime::secsTo() */ int QDateTime::secsTo(const QDateTime &other) const { QDate date1, date2; QTime time1, time2; d->getUTC(date1, time1); other.d->getUTC(date2, time2); return (date1.daysTo(date2) * SECS_PER_DAY) + time1.secsTo(time2); } /*! \fn QDateTime QDateTime::toTimeSpec(Qt::TimeSpec specification) const Returns a copy of this datetime configured to use the given time \a specification. \sa timeSpec(), toUTC(), toLocalTime() */ QDateTime QDateTime::toTimeSpec(Qt::TimeSpec spec) const { if ((d->spec == QDateTimePrivate::UTC) == (spec == Qt::UTC)) return *this; QDateTime ret; if (spec == Qt::UTC) { d->getUTC(ret.d->date, ret.d->time); ret.d->spec = QDateTimePrivate::UTC; } else { ret.d->spec = d->getLocal(ret.d->date, ret.d->time); } return ret; } /*! Returns true if this datetime is equal to the \a other datetime; otherwise returns false. \sa operator!=() */ bool QDateTime::operator==(const QDateTime &other) const { if (d->spec == other.d->spec && d->utcOffset == other.d->utcOffset) return d->time == other.d->time && d->date == other.d->date; else { QDate date1, date2; QTime time1, time2; d->getUTC(date1, time1); other.d->getUTC(date2, time2); return time1 == time2 && date1 == date2; } } /*! \fn bool QDateTime::operator!=(const QDateTime &other) const Returns true if this datetime is different from the \a other datetime; otherwise returns false. Two datetimes are different if either the date, the time, or the time zone components are different. \sa operator==() */ /*! Returns true if this datetime is earlier than the \a other datetime; otherwise returns false. */ bool QDateTime::operator<(const QDateTime &other) const { if (d->spec == other.d->spec && d->spec != QDateTimePrivate::OffsetFromUTC) { if (d->date != other.d->date) return d->date < other.d->date; return d->time < other.d->time; } else { QDate date1, date2; QTime time1, time2; d->getUTC(date1, time1); other.d->getUTC(date2, time2); if (date1 != date2) return date1 < date2; return time1 < time2; } } /*! \fn bool QDateTime::operator<=(const QDateTime &other) const Returns true if this datetime is earlier than or equal to the \a other datetime; otherwise returns false. */ /*! \fn bool QDateTime::operator>(const QDateTime &other) const Returns true if this datetime is later than the \a other datetime; otherwise returns false. */ /*! \fn bool QDateTime::operator>=(const QDateTime &other) const Returns true if this datetime is later than or equal to the \a other datetime; otherwise returns false. */ /*! Returns the current datetime, as reported by the system clock, in the local time zone. \sa QDate::currentDate(), QTime::currentTime(), toTimeSpec() */ QDateTime QDateTime::currentDateTime() { #if defined(Q_OS_WIN) QDate d; QTime t; SYSTEMTIME st; memset(&st, 0, sizeof(SYSTEMTIME)); GetLocalTime(&st); d.jd = julianDayFromDate(st.wYear, st.wMonth, st.wDay); t.mds = MSECS_PER_HOUR * st.wHour + MSECS_PER_MIN * st.wMinute + 1000 * st.wSecond + st.wMilliseconds; return QDateTime(d, t); #else #if defined(Q_OS_UNIX) // posix compliant system // we have milliseconds struct timeval tv; gettimeofday(&tv, 0); time_t ltime = tv.tv_sec; tm *t = 0; #if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) // use the reentrant version of localtime() where available tzset(); tm res; t = localtime_r(<ime, &res); #else t = localtime(<ime); #endif QDateTime dt; dt.d->time.mds = MSECS_PER_HOUR * t->tm_hour + MSECS_PER_MIN * t->tm_min + 1000 * t->tm_sec + tv.tv_usec / 1000; #else time_t ltime; // no millisecond resolution ::time(<ime); tm *t = 0; localtime(<ime); dt.d->time.mds = MSECS_PER_HOUR * t->tm_hour + MSECS_PER_MIN * t->tm_min + 1000 * t->tm_sec; #endif // Q_OS_UNIX dt.d->date.jd = julianDayFromDate(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday); dt.d->spec = t->tm_isdst > 0 ? QDateTimePrivate::LocalDST : t->tm_isdst == 0 ? QDateTimePrivate::LocalStandard : QDateTimePrivate::LocalUnknown; return dt; #endif } /*! \since 4.2 Returns a datetime whose date and time are the number of \a seconds that have passed since 1970-01-01T00:00:00, Coordinated Universal Time (Qt::UTC). On systems that do not support time zones, the time will be set as if local time were Qt::UTC. \sa toTime_t(), setTime_t() */ QDateTime QDateTime::fromTime_t(uint seconds) { QDateTime d; d.setTime_t(seconds); return d; } /*! \since 4.4 \internal Sets the offset from UTC to \a seconds, and also sets timeSpec() to Qt::OffsetFromUTC. The maximum and minimum offset is 14 positive or negative hours. If \a seconds is larger or smaller than that, the result is undefined. 0 as offset is identical to UTC. Therefore, if \a seconds is 0, the timeSpec() will be set to Qt::UTC. Hence the UTC offset always relates to UTC, and can never relate to local time. \sa isValid(), utcOffset() */ void QDateTime::setUtcOffset(int seconds) { detach(); /* The motivation to also setting d->spec is to ensure that the QDateTime * instance stay in well-defined states all the time, instead of that * we instruct the user to ensure it. */ if(seconds == 0) d->spec = QDateTimePrivate::UTC; else d->spec = QDateTimePrivate::OffsetFromUTC; /* Even if seconds is 0 we assign it to utcOffset. */ d->utcOffset = seconds; } /*! \since 4.4 \internal Returns the UTC offset in seconds. If the timeSpec() isn't Qt::OffsetFromUTC, 0 is returned. However, since 0 is a valid UTC offset the return value of this function cannot be used to determine whether a utcOffset() is used or is valid, timeSpec() must be checked. Likewise, if this QDateTime() is invalid or if timeSpec() isn't Qt::OffsetFromUTC, 0 is returned. The UTC offset only applies if the timeSpec() is Qt::OffsetFromUTC. \sa isValid(), setUtcOffset() */ int QDateTime::utcOffset() const { if(isValid() && d->spec == QDateTimePrivate::OffsetFromUTC) return d->utcOffset; else return 0; } #ifndef QT_NO_DATESTRING static int fromShortMonthName(const QString &monthName) { // Assume that English monthnames are the default for (int i = 0; i < 12; ++i) { if (monthName == QLatin1String(qt_shortMonthNames[i])) return i + 1; } // If English names can't be found, search the localized ones for (int i = 1; i <= 12; ++i) { if (monthName == QDate::shortMonthName(i)) return i; } return -1; } /*! \fn QDateTime QDateTime::fromString(const QString &string, Qt::DateFormat format) Returns the QDateTime represented by the \a string, using the \a format given, or an invalid datetime if this is not possible. Note for Qt::TextDate: It is recommended that you use the English short month names (e.g. "Jan"). Although localized month names can also be used, they depend on the user's locale settings. */ QDateTime QDateTime::fromString(const QString& s, Qt::DateFormat f) { if (s.isEmpty()) { return QDateTime(); } switch (f) { case Qt::ISODate: { QString tmp = s; Qt::TimeSpec ts = Qt::LocalTime; const QDate date = QDate::fromString(tmp.left(10), Qt::ISODate); if (tmp.size() == 10) return QDateTime(date); // Recognize UTC specifications if (tmp.endsWith(QLatin1Char('Z'))) { ts = Qt::UTC; tmp.chop(1); } return QDateTime(date, QTime::fromString(tmp.mid(11), Qt::ISODate), ts); } case Qt::SystemLocaleDate: case Qt::SystemLocaleShortDate: case Qt::SystemLocaleLongDate: return fromString(s, QLocale::system().dateTimeFormat(f == Qt::SystemLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat)); case Qt::LocaleDate: case Qt::DefaultLocaleShortDate: case Qt::DefaultLocaleLongDate: return fromString(s, QLocale().dateTimeFormat(f == Qt::DefaultLocaleLongDate ? QLocale::LongFormat : QLocale::ShortFormat)); #if !defined(QT_NO_TEXTDATE) case Qt::TextDate: { QStringList parts = s.split(QLatin1Char(' '), QString::SkipEmptyParts); if ((parts.count() < 5) || (parts.count() > 6)) { return QDateTime(); } // Accept "Sun Dec 1 13:02:00 1974" and "Sun 1. Dec 13:02:00 1974" int month = -1, day = -1; bool ok; month = fromShortMonthName(parts.at(1)); if (month != -1) { day = parts.at(2).toInt(&ok); if (!ok) day = -1; } if (month == -1 || day == -1) { // first variant failed, lets try the other month = fromShortMonthName(parts.at(2)); if (month != -1) { QString dayStr = parts.at(1); if (dayStr.endsWith(QLatin1Char('.'))) { dayStr.chop(1); day = dayStr.toInt(&ok); if (!ok) day = -1; } else { day = -1; } } } if (month == -1 || day == -1) { // both variants failed, give up return QDateTime(); } int year; QStringList timeParts = parts.at(3).split(QLatin1Char(':')); if ((timeParts.count() == 3) || (timeParts.count() == 2)) { year = parts.at(4).toInt(&ok); if (!ok) return QDateTime(); } else { timeParts = parts.at(4).split(QLatin1Char(':')); if ((timeParts.count() != 3) && (timeParts.count() != 2)) return QDateTime(); year = parts.at(3).toInt(&ok); if (!ok) return QDateTime(); } int hour = timeParts.at(0).toInt(&ok); if (!ok) { return QDateTime(); } int minute = timeParts.at(1).toInt(&ok); if (!ok) { return QDateTime(); } int second = (timeParts.count() > 2) ? timeParts.at(2).toInt(&ok) : 0; if (!ok) { return QDateTime(); } QDate date(year, month, day); QTime time(hour, minute, second); if (parts.count() == 5) return QDateTime(date, time, Qt::LocalTime); QString tz = parts.at(5); if (!tz.startsWith(QLatin1String("GMT"), Qt::CaseInsensitive)) return QDateTime(); int tzoffset = 0; if (tz.length() > 3) { QChar sign = tz.at(3); if ((sign != QLatin1Char('+')) && (sign != QLatin1Char('-'))) { return QDateTime(); } int tzhour = tz.mid(4, 2).toInt(&ok); if (!ok) return QDateTime(); int tzminute = tz.mid(6).toInt(&ok); if (!ok) return QDateTime(); tzoffset = (tzhour*60 + tzminute) * 60; if (sign == QLatin1Char('-')) tzoffset = -tzoffset; } return QDateTime(date, time, Qt::UTC).addSecs(-tzoffset).toLocalTime(); } #endif //QT_NO_TEXTDATE } return QDateTime(); } /*! \fn QDateTime::fromString(const QString &string, const QString &format) Returns the QDateTime represented by the \a string, using the \a format given, or an invalid datetime if the string cannot be parsed. These expressions may be used for the date part of the format string: \table \header \i Expression \i Output \row \i d \i the day as number without a leading zero (1 to 31) \row \i dd \i the day as number with a leading zero (01 to 31) \row \i ddd \i the abbreviated localized day name (e.g. 'Mon' to 'Sun'). Uses QDate::shortDayName(). \row \i dddd \i the long localized day name (e.g. 'Monday' to 'Sunday'). Uses QDate::longDayName(). \row \i M \i the month as number without a leading zero (1-12) \row \i MM \i the month as number with a leading zero (01-12) \row \i MMM \i the abbreviated localized month name (e.g. 'Jan' to 'Dec'). Uses QDate::shortMonthName(). \row \i MMMM \i the long localized month name (e.g. 'January' to 'December'). Uses QDate::longMonthName(). \row \i yy \i the year as two digit number (00-99) \row \i yyyy \i the year as four digit number \endtable \note Unlike the other version of this function, day and month names must be given in the user's local language. It is only possible to use the English names if the user's language is English. These expressions may be used for the time part of the format string: \table \header \i Expression \i Output \row \i h \i the hour without a leading zero (0 to 23 or 1 to 12 if AM/PM display) \row \i hh \i the hour with a leading zero (00 to 23 or 01 to 12 if AM/PM display) \row \i H \i the hour without a leading zero (0 to 23, even with AM/PM display) \row \i HH \i the hour with a leading zero (00 to 23, even with AM/PM display) \row \i m \i the minute without a leading zero (0 to 59) \row \i mm \i the minute with a leading zero (00 to 59) \row \i s \i the second without a leading zero (0 to 59) \row \i ss \i the second with a leading zero (00 to 59) \row \i z \i the milliseconds without leading zeroes (0 to 999) \row \i zzz \i the milliseconds with leading zeroes (000 to 999) \row \i AP or A \i interpret as an AM/PM time. \e AP must be either "AM" or "PM". \row \i ap or a \i Interpret as an AM/PM time. \e ap must be either "am" or "pm". \endtable All other input characters will be treated as text. Any sequence of characters that are enclosed in singlequotes will also be treated as text and not be used as an expression. \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 12 If the format is not satisfied an invalid QDateTime is returned. The expressions that don't have leading zeroes (d, M, h, m, s, z) will be greedy. This means that they will use two digits even if this will put them outside the range and/or leave too few digits for other sections. \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 13 This could have meant 1 January 00:30.00 but the M will grab two digits. For any field that is not represented in the format the following defaults are used: \table \header \i Field \i Default value \row \i Year \i 1900 \row \i Month \i 1 (January) \row \i Day \i 1 \row \i Hour \i 0 \row \i Minute \i 0 \row \i Second \i 0 \endtable For example: \snippet doc/src/snippets/code/src_corelib_tools_qdatetime.cpp 14 \sa QDate::fromString() QTime::fromString() QDate::toString() QDateTime::toString() QTime::toString() */ QDateTime QDateTime::fromString(const QString &string, const QString &format) { #ifndef QT_BOOTSTRAPPED QTime time; QDate date; QDateTimeParser dt(QVariant::DateTime, QDateTimeParser::FromString); if (dt.parseFormat(format) && dt.fromString(string, &date, &time)) return QDateTime(date, time); #else Q_UNUSED(string); Q_UNUSED(format); #endif return QDateTime(QDate(), QTime(-1, -1, -1)); } #endif // QT_NO_DATESTRING /*! \fn QDateTime QDateTime::toLocalTime() const Returns a datetime containing the date and time information in this datetime, but specified using the Qt::LocalTime definition. \sa toTimeSpec() */ /*! \fn QDateTime QDateTime::toUTC() const Returns a datetime containing the date and time information in this datetime, but specified using the Qt::UTC definition. \sa toTimeSpec() */ /*! \internal */ void QDateTime::detach() { d.detach(); } /***************************************************************************** Date/time stream functions *****************************************************************************/ #ifndef QT_NO_DATASTREAM /*! \relates QDate Writes the \a date to stream \a out. \sa {Format of the QDataStream operators} */ QDataStream &operator<<(QDataStream &out, const QDate &date) { return out << (quint32)(date.jd); } /*! \relates QDate Reads a date from stream \a in into the \a date. \sa {Format of the QDataStream operators} */ QDataStream &operator>>(QDataStream &in, QDate &date) { quint32 jd; in >> jd; date.jd = jd; return in; } /*! \relates QTime Writes \a time to stream \a out. \sa {Format of the QDataStream operators} */ QDataStream &operator<<(QDataStream &out, const QTime &time) { return out << quint32(time.mds); } /*! \relates QTime Reads a time from stream \a in into the given \a time. \sa {Format of the QDataStream operators} */ QDataStream &operator>>(QDataStream &in, QTime &time) { quint32 ds; in >> ds; time.mds = int(ds); return in; } /*! \relates QDateTime Writes \a dateTime to the \a out stream. \sa {Format of the QDataStream operators} */ QDataStream &operator<<(QDataStream &out, const QDateTime &dateTime) { out << dateTime.d->date << dateTime.d->time; if (out.version() >= 7) out << (qint8)dateTime.d->spec; return out; } /*! \relates QDateTime Reads a datetime from the stream \a in into \a dateTime. \sa {Format of the QDataStream operators} */ QDataStream &operator>>(QDataStream &in, QDateTime &dateTime) { dateTime.detach(); qint8 ts = (qint8)QDateTimePrivate::LocalUnknown; in >> dateTime.d->date >> dateTime.d->time; if (in.version() >= 7) in >> ts; dateTime.d->spec = (QDateTimePrivate::Spec)ts; return in; } #endif // QT_NO_DATASTREAM /*! \fn QString QDate::monthName(int month) Use shortMonthName() instead. */ /*! \fn QString QDate::dayName(int weekday) Use shortDayName() instead. */ /*! \fn bool QDate::leapYear(int year) Use isLeapYear() instead. */ /*! \fn QDate QDate::currentDate(Qt::TimeSpec spec) If \a spec is Qt::LocalTime, use the currentDate() overload that takes no parameters instead; otherwise, use QDateTime::currentDateTime(). \oldcode QDate localDate = QDate::currentDate(Qt::LocalTime); QDate utcDate = QDate::currentDate(Qt::UTC); \newcode QDate localDate = QDate::currentDate(); QDate utcDate = QDateTime::currentDateTime().toUTC().date(); \endcode \sa QDateTime::toUTC() */ /*! \fn QTime QTime::currentTime(Qt::TimeSpec specification) Returns the current time for the given \a specification. To replace uses of this function where the \a specification is Qt::LocalTime, use the currentDate() overload that takes no parameters instead; otherwise, use QDateTime::currentDateTime() and convert the result to a UTC measurement. \oldcode QTime localTime = QTime::currentTime(Qt::LocalTime); QTime utcTime = QTime::currentTime(Qt::UTC); \newcode QTime localTime = QTime::currentTime(); QTime utcTime = QTimeTime::currentDateTime().toUTC().time(); \endcode \sa QDateTime::toUTC() */ /*! \fn void QDateTime::setTime_t(uint secsSince1Jan1970UTC, Qt::TimeSpec spec) Use the single-argument overload of setTime_t() instead. */ /*! \fn QDateTime QDateTime::currentDateTime(Qt::TimeSpec spec) Use the currentDateTime() overload that takes no parameters instead. */ // checks if there is an unqoted 'AP' or 'ap' in the string static bool hasUnquotedAP(const QString &f) { const QLatin1Char quote('\''); bool inquote = false; const int max = f.size(); for (int i=0; ihour() > 12) buf = QString::number(dt->hour() - 12).rightJustified(2, QLatin1Char('0'), true); else if (hour12 && dt->hour() == 0) buf = QLatin1String("12"); else buf = QString::number(dt->hour()).rightJustified(2, QLatin1Char('0'), true); removed = 2; } else if (f.at(0) == QLatin1Char('h') || f.at(0) == QLatin1Char('H')) { const bool hour12 = f.at(0) == QLatin1Char('h') && am_pm; if (hour12 && dt->hour() > 12) buf = QString::number(dt->hour() - 12); else if (hour12 && dt->hour() == 0) buf = QLatin1String("12"); else buf = QString::number(dt->hour()); removed = 1; } else if (f.startsWith(QLatin1String("mm"))) { buf = QString::number(dt->minute()).rightJustified(2, QLatin1Char('0'), true); removed = 2; } else if (f.at(0) == (QLatin1Char('m'))) { buf = QString::number(dt->minute()); removed = 1; } else if (f.startsWith(QLatin1String("ss"))) { buf = QString::number(dt->second()).rightJustified(2, QLatin1Char('0'), true); removed = 2; } else if (f.at(0) == QLatin1Char('s')) { buf = QString::number(dt->second()); } else if (f.startsWith(QLatin1String("zzz"))) { buf = QString::number(dt->msec()).rightJustified(3, QLatin1Char('0'), true); removed = 3; } else if (f.at(0) == QLatin1Char('z')) { buf = QString::number(dt->msec()); removed = 1; } else if (f.at(0).toUpper() == QLatin1Char('A')) { const bool upper = f.at(0) == QLatin1Char('A'); buf = dt->hour() < 12 ? QLatin1String("am") : QLatin1String("pm"); if (upper) buf = buf.toUpper(); if (f.size() > 1 && f.at(1).toUpper() == QLatin1Char('P') && f.at(0).isUpper() == f.at(1).isUpper()) { removed = 2; } else { removed = 1; } } } if (dd) { if (f.startsWith(QLatin1String("dddd"))) { buf = dd->longDayName(dd->dayOfWeek()); removed = 4; } else if (f.startsWith(QLatin1String("ddd"))) { buf = dd->shortDayName(dd->dayOfWeek()); removed = 3; } else if (f.startsWith(QLatin1String("dd"))) { buf = QString::number(dd->day()).rightJustified(2, QLatin1Char('0'), true); removed = 2; } else if (f.at(0) == QLatin1Char('d')) { buf = QString::number(dd->day()); removed = 1; } else if (f.startsWith(QLatin1String("MMMM"))) { buf = dd->longMonthName(dd->month()); removed = 4; } else if (f.startsWith(QLatin1String("MMM"))) { buf = dd->shortMonthName(dd->month()); removed = 3; } else if (f.startsWith(QLatin1String("MM"))) { buf = QString::number(dd->month()).rightJustified(2, QLatin1Char('0'), true); removed = 2; } else if (f.at(0) == QLatin1Char('M')) { buf = QString::number(dd->month()); removed = 1; } else if (f.startsWith(QLatin1String("yyyy"))) { const int year = dd->year(); buf = QString::number(qAbs(year)).rightJustified(4, QLatin1Char('0')); if(year > 0) removed = 4; else { buf.prepend(QLatin1Char('-')); removed = 5; } } else if (f.startsWith(QLatin1String("yy"))) { buf = QString::number(dd->year()).right(2).rightJustified(2, QLatin1Char('0')); removed = 2; } } if (removed == 0 || removed >= f.size()) { return buf; } return buf + getFmtString(f.mid(removed), dt, dd, am_pm); } // Parses the format string and uses getFmtString to get the values for the tokens. Ret static QString fmtDateTime(const QString& f, const QTime* dt, const QDate* dd) { const QLatin1Char quote('\''); if (f.isEmpty()) return QString(); if (dt && !dt->isValid()) return QString(); if (dd && !dd->isValid()) return QString(); const bool ap = hasUnquotedAP(f); QString buf; QString frm; QChar status(QLatin1Char('0')); for (int i = 0; i < (int)f.length(); ++i) { if (f.at(i) == quote) { if (status == quote) { if (i > 0 && f.at(i - 1) == quote) buf += QLatin1Char('\''); status = QLatin1Char('0'); } else { if (!frm.isEmpty()) { buf += getFmtString(frm, dt, dd, ap); frm.clear(); } status = quote; } } else if (status == quote) { buf += f.at(i); } else if (f.at(i) == status) { if ((ap) && ((f.at(i) == QLatin1Char('P')) || (f.at(i) == QLatin1Char('p')))) status = QLatin1Char('0'); frm += f.at(i); } else { buf += getFmtString(frm, dt, dd, ap); frm.clear(); if ((f.at(i) == QLatin1Char('h')) || (f.at(i) == QLatin1Char('m')) || (f.at(i) == QLatin1Char('H')) || (f.at(i) == QLatin1Char('s')) || (f.at(i) == QLatin1Char('z'))) { status = f.at(i); frm += f.at(i); } else if ((f.at(i) == QLatin1Char('d')) || (f.at(i) == QLatin1Char('M')) || (f.at(i) == QLatin1Char('y'))) { status = f.at(i); frm += f.at(i); } else if ((ap) && (f.at(i) == QLatin1Char('A'))) { status = QLatin1Char('P'); frm += f.at(i); } else if((ap) && (f.at(i) == QLatin1Char('a'))) { status = QLatin1Char('p'); frm += f.at(i); } else { buf += f.at(i); status = QLatin1Char('0'); } } } buf += getFmtString(frm, dt, dd, ap); return buf; } #endif // QT_NO_DATESTRING #ifdef Q_OS_WIN static const int LowerYear = 1980; #else static const int LowerYear = 1970; #endif static const int UpperYear = 2037; static QDate adjustDate(QDate date) { QDate lowerLimit(LowerYear, 1, 2); QDate upperLimit(UpperYear, 12, 30); if (date > lowerLimit && date < upperLimit) return date; int month = date.month(); int day = date.day(); // neither 1970 nor 2037 are leap years, so make sure date isn't Feb 29 if (month == 2 && day == 29) --day; if (date < lowerLimit) date.setDate(LowerYear, month, day); else date.setDate(UpperYear, month, day); return date; } static QDateTimePrivate::Spec utcToLocal(QDate &date, QTime &time) { QDate fakeDate = adjustDate(date); time_t secsSince1Jan1970UTC = toTime_tHelper(fakeDate, time); tm *brokenDown = 0; #if defined(Q_OS_WINCE) tm res; FILETIME utcTime = time_tToFt(secsSince1Jan1970UTC); FILETIME resultTime; FileTimeToLocalFileTime(&utcTime , &resultTime); SYSTEMTIME sysTime; FileTimeToSystemTime(&resultTime , &sysTime); res.tm_sec = sysTime.wSecond; res.tm_min = sysTime.wMinute; res.tm_hour = sysTime.wHour; res.tm_mday = sysTime.wDay; res.tm_mon = sysTime.wMonth - 1; res.tm_year = sysTime.wYear - 1900; brokenDown = &res; #elif !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) // use the reentrant version of localtime() where available tzset(); tm res; brokenDown = localtime_r(&secsSince1Jan1970UTC, &res); #elif defined(_MSC_VER) && _MSC_VER >= 1400 tm res; if (!_localtime64_s(&res, &secsSince1Jan1970UTC)) brokenDown = &res; #else brokenDown = localtime(&secsSince1Jan1970UTC); #endif if (!brokenDown) { date = QDate(1970, 1, 1); time = QTime(); return QDateTimePrivate::LocalUnknown; } else { int deltaDays = fakeDate.daysTo(date); date = QDate(brokenDown->tm_year + 1900, brokenDown->tm_mon + 1, brokenDown->tm_mday); time = QTime(brokenDown->tm_hour, brokenDown->tm_min, brokenDown->tm_sec, time.msec()); date = date.addDays(deltaDays); if (brokenDown->tm_isdst > 0) return QDateTimePrivate::LocalDST; else if (brokenDown->tm_isdst < 0) return QDateTimePrivate::LocalUnknown; else return QDateTimePrivate::LocalStandard; } } static void localToUtc(QDate &date, QTime &time, int isdst) { if (!date.isValid()) return; QDate fakeDate = adjustDate(date); tm localTM; localTM.tm_sec = time.second(); localTM.tm_min = time.minute(); localTM.tm_hour = time.hour(); localTM.tm_mday = fakeDate.day(); localTM.tm_mon = fakeDate.month() - 1; localTM.tm_year = fakeDate.year() - 1900; localTM.tm_isdst = (int)isdst; #if defined(Q_OS_WINCE) time_t secsSince1Jan1970UTC = toTime_tHelper(fakeDate, time); #else #if defined(Q_OS_WIN) _tzset(); #endif time_t secsSince1Jan1970UTC = mktime(&localTM); #endif tm *brokenDown = 0; #if defined(Q_OS_WINCE) tm res; FILETIME localTime = time_tToFt(secsSince1Jan1970UTC); SYSTEMTIME sysTime; FileTimeToSystemTime(&localTime, &sysTime); FILETIME resultTime; LocalFileTimeToFileTime(&localTime , &resultTime); FileTimeToSystemTime(&resultTime , &sysTime); res.tm_sec = sysTime.wSecond; res.tm_min = sysTime.wMinute; res.tm_hour = sysTime.wHour; res.tm_mday = sysTime.wDay; res.tm_mon = sysTime.wMonth - 1; res.tm_year = sysTime.wYear - 1900; res.tm_isdst = (int)isdst; brokenDown = &res; #elif !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) // use the reentrant version of gmtime() where available tm res; brokenDown = gmtime_r(&secsSince1Jan1970UTC, &res); #elif defined(_MSC_VER) && _MSC_VER >= 1400 tm res; if (!_gmtime64_s(&res, &secsSince1Jan1970UTC)) brokenDown = &res; #else brokenDown = gmtime(&secsSince1Jan1970UTC); #endif // !QT_NO_THREAD && _POSIX_THREAD_SAFE_FUNCTIONS if (!brokenDown) { date = QDate(1970, 1, 1); time = QTime(); } else { int deltaDays = fakeDate.daysTo(date); date = QDate(brokenDown->tm_year + 1900, brokenDown->tm_mon + 1, brokenDown->tm_mday); time = QTime(brokenDown->tm_hour, brokenDown->tm_min, brokenDown->tm_sec, time.msec()); date = date.addDays(deltaDays); } } QDateTimePrivate::Spec QDateTimePrivate::getLocal(QDate &outDate, QTime &outTime) const { outDate = date; outTime = time; if (spec == QDateTimePrivate::UTC) return utcToLocal(outDate, outTime); return spec; } void QDateTimePrivate::getUTC(QDate &outDate, QTime &outTime) const { outDate = date; outTime = time; const bool isOffset = spec == QDateTimePrivate::OffsetFromUTC; if (spec != QDateTimePrivate::UTC && !isOffset) localToUtc(outDate, outTime, (int)spec); if (isOffset) addMSecs(outDate, outTime, -(qint64(utcOffset) * 1000)); } #if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_NO_DATESTRING) QDebug operator<<(QDebug dbg, const QDate &date) { dbg.nospace() << "QDate(" << date.toString() << ')'; return dbg.space(); } QDebug operator<<(QDebug dbg, const QTime &time) { dbg.nospace() << "QTime(" << time.toString() << ')'; return dbg.space(); } QDebug operator<<(QDebug dbg, const QDateTime &date) { dbg.nospace() << "QDateTime(" << date.toString() << ')'; return dbg.space(); } #endif #ifndef QT_BOOTSTRAPPED /*! \internal Gets the digit from a datetime. E.g. QDateTime var(QDate(2004, 02, 02)); int digit = getDigit(var, Year); // digit = 2004 */ int QDateTimeParser::getDigit(const QDateTime &t, int index) const { if (index < 0 || index >= sectionNodes.size()) { #ifndef QT_NO_DATESTRING qWarning("QDateTimeParser::getDigit() Internal error (%s %d)", qPrintable(t.toString()), index); #else qWarning("QDateTimeParser::getDigit() Internal error (%d)", index); #endif return -1; } const SectionNode &node = sectionNodes.at(index); switch (node.type) { case Hour24Section: case Hour12Section: return t.time().hour(); case MinuteSection: return t.time().minute(); case SecondSection: return t.time().second(); case MSecSection: return t.time().msec(); case YearSection2Digits: case YearSection: return t.date().year(); case MonthSection: return t.date().month(); case DaySection: return t.date().day(); case DayOfWeekSection: return t.date().day(); case AmPmSection: return t.time().hour() > 11 ? 1 : 0; default: break; } #ifndef QT_NO_DATESTRING qWarning("QDateTimeParser::getDigit() Internal error 2 (%s %d)", qPrintable(t.toString()), index); #else qWarning("QDateTimeParser::getDigit() Internal error 2 (%d)", index); #endif return -1; } /*! \internal Sets a digit in a datetime. E.g. QDateTime var(QDate(2004, 02, 02)); int digit = getDigit(var, Year); // digit = 2004 setDigit(&var, Year, 2005); digit = getDigit(var, Year); // digit = 2005 */ bool QDateTimeParser::setDigit(QDateTime &v, int index, int newVal) const { if (index < 0 || index >= sectionNodes.size()) { #ifndef QT_NO_DATESTRING qWarning("QDateTimeParser::setDigit() Internal error (%s %d %d)", qPrintable(v.toString()), index, newVal); #else qWarning("QDateTimeParser::setDigit() Internal error (%d %d)", index, newVal); #endif return false; } const SectionNode &node = sectionNodes.at(index); int year, month, day, hour, minute, second, msec; year = v.date().year(); month = v.date().month(); day = v.date().day(); hour = v.time().hour(); minute = v.time().minute(); second = v.time().second(); msec = v.time().msec(); switch (node.type) { case Hour24Section: case Hour12Section: hour = newVal; break; case MinuteSection: minute = newVal; break; case SecondSection: second = newVal; break; case MSecSection: msec = newVal; break; case YearSection2Digits: case YearSection: year = newVal; break; case MonthSection: month = newVal; break; case DaySection: case DayOfWeekSection: if (newVal > 31) { // have to keep legacy behavior. setting the // date to 32 should return false. Setting it // to 31 for february should return true return false; } day = newVal; break; case AmPmSection: hour = (newVal == 0 ? hour % 12 : (hour % 12) + 12); break; default: qWarning("QDateTimeParser::setDigit() Internal error (%s)", qPrintable(sectionName(node.type))); break; } if (!(node.type & (DaySection|DayOfWeekSection))) { if (day < cachedDay) day = cachedDay; const int max = QDate(year, month, 1).daysInMonth(); if (day > max) { day = max; } } if (QDate::isValid(year, month, day) && QTime::isValid(hour, minute, second, msec)) { v = QDateTime(QDate(year, month, day), QTime(hour, minute, second, msec), spec); return true; } return false; } /*! \ Returns the absolute maximum for a section */ int QDateTimeParser::absoluteMax(int s, const QDateTime &cur) const { const SectionNode &sn = sectionNode(s); switch (sn.type) { case Hour24Section: case Hour12Section: return 23; // this is special-cased in // parseSection. We want it to be // 23 for the stepBy case. case MinuteSection: case SecondSection: return 59; case MSecSection: return 999; case YearSection2Digits: case YearSection: return 9999; // sectionMaxSize will prevent // people from typing in a larger // number in count == 2 sections. // stepBy() will work on real years anyway case MonthSection: return 12; case DaySection: case DayOfWeekSection: return cur.isValid() ? cur.date().daysInMonth() : 31; case AmPmSection: return 1; default: break; } qWarning("QDateTimeParser::absoluteMax() Internal error (%s)", qPrintable(sectionName(sn.type))); return -1; } /*! \internal Returns the absolute minimum for a section */ int QDateTimeParser::absoluteMin(int s) const { const SectionNode &sn = sectionNode(s); switch (sn.type) { case Hour24Section: case Hour12Section: case MinuteSection: case SecondSection: case MSecSection: case YearSection2Digits: case YearSection: return 0; case MonthSection: case DaySection: case DayOfWeekSection: return 1; case AmPmSection: return 0; default: break; } qWarning("QDateTimeParser::absoluteMin() Internal error (%s, %0x)", qPrintable(sectionName(sn.type)), sn.type); return -1; } /*! \internal Returns the sectionNode for the Section \a s. */ const QDateTimeParser::SectionNode &QDateTimeParser::sectionNode(int sectionIndex) const { if (sectionIndex < 0) { switch (sectionIndex) { case FirstSectionIndex: return first; case LastSectionIndex: return last; case NoSectionIndex: return none; } } else if (sectionIndex < sectionNodes.size()) { return sectionNodes.at(sectionIndex); } qWarning("QDateTimeParser::sectionNode() Internal error (%d)", sectionIndex); return none; } QDateTimeParser::Section QDateTimeParser::sectionType(int sectionIndex) const { return sectionNode(sectionIndex).type; } /*! \internal Returns the starting position for section \a s. */ int QDateTimeParser::sectionPos(int sectionIndex) const { return sectionPos(sectionNode(sectionIndex)); } int QDateTimeParser::sectionPos(const SectionNode &sn) const { switch (sn.type) { case FirstSection: return 0; case LastSection: return displayText().size() - 1; default: break; } if (sn.pos == -1) { qWarning("QDateTimeParser::sectionPos Internal error (%s)", qPrintable(sectionName(sn.type))); return -1; } return sn.pos; } /*! \internal helper function for parseFormat. removes quotes that are not escaped and removes the escaping on those that are escaped */ static QString unquote(const QString &str) { const QChar quote(QLatin1Char('\'')); const QChar slash(QLatin1Char('\\')); const QChar zero(QLatin1Char('0')); QString ret; QChar status(zero); const int max = str.size(); for (int i=0; i= from) str = unquote(str); list->append(str); } bool QDateTimeParser::parseFormat(const QString &newFormat) { const QLatin1Char quote('\''); const QLatin1Char slash('\\'); const QLatin1Char zero('0'); if (newFormat == displayFormat && !newFormat.isEmpty()) { return true; } QDTPDEBUGN("parseFormat: %s", newFormat.toLatin1().constData()); QVector newSectionNodes; Sections newDisplay = 0; QStringList newSeparators; int i, index = 0; int add = 0; QChar status(zero); const int max = newFormat.size(); int lastQuote = -1; for (i = 0; i= 2) { const SectionNode sn = { repeat == 4 ? YearSection : YearSection2Digits, i - add, repeat == 4 ? 4 : 2 }; newSectionNodes.append(sn); appendSeparator(&newSeparators, newFormat, index, i - index, lastQuote); i += sn.count - 1; index = i + 1; newDisplay |= sn.type; } } break; case 'M': if (parserType != QVariant::Time) { const SectionNode sn = { MonthSection, i - add, countRepeat(newFormat, i, 4) }; newSectionNodes.append(sn); newSeparators.append(unquote(newFormat.mid(index, i - index))); i += sn.count - 1; index = i + 1; newDisplay |= MonthSection; } break; case 'd': if (parserType != QVariant::Time) { const int repeat = countRepeat(newFormat, i, 4); const SectionNode sn = { repeat >= 3 ? DayOfWeekSection : DaySection, i - add, repeat }; newSectionNodes.append(sn); appendSeparator(&newSeparators, newFormat, index, i - index, lastQuote); i += sn.count - 1; index = i + 1; newDisplay |= sn.type; } break; default: break; } } } if (newSectionNodes.isEmpty() && context == DateTimeEdit) { return false; } if ((newDisplay & (AmPmSection|Hour12Section)) == Hour12Section) { const int max = newSectionNodes.size(); for (int i=0; i= sectionNodes.size()) { qWarning("QDateTimeParser::sectionSize Internal error (%d)", sectionIndex); return -1; } if (sectionIndex == sectionNodes.size() - 1) { return displayText().size() - sectionPos(sectionIndex) - separators.last().size(); } else { return sectionPos(sectionIndex + 1) - sectionPos(sectionIndex) - separators.at(sectionIndex + 1).size(); } } int QDateTimeParser::sectionMaxSize(Section s, int count) const { #ifndef QT_NO_TEXTDATE int mcount = 12; #endif switch (s) { case FirstSection: case NoSection: case LastSection: return 0; case AmPmSection: { const int lowerMax = qMin(getAmPmText(AmText, LowerCase).size(), getAmPmText(PmText, LowerCase).size()); const int upperMax = qMin(getAmPmText(AmText, UpperCase).size(), getAmPmText(PmText, UpperCase).size()); return qMin(4, qMin(lowerMax, upperMax)); } case Hour24Section: case Hour12Section: case MinuteSection: case SecondSection: case DaySection: return 2; case DayOfWeekSection: #ifdef QT_NO_TEXTDATE return 2; #else mcount = 7; // fall through #endif case MonthSection: if (count <= 2) return 2; #ifdef QT_NO_TEXTDATE return 2; #else { int ret = 0; const QLocale l = locale(); for (int i=1; i<=mcount; ++i) { const QString str = (s == MonthSection ? l.monthName(i, count == 4 ? QLocale::LongFormat : QLocale::ShortFormat) : l.dayName(i, count == 4 ? QLocale::LongFormat : QLocale::ShortFormat)); ret = qMax(str.size(), ret); } return ret; } #endif case MSecSection: return 3; case YearSection: return 4; case YearSection2Digits: return 2; case CalendarPopupSection: case Internal: case TimeSectionMask: case DateSectionMask: qWarning("QDateTimeParser::sectionMaxSize: Invalid section %s", sectionName(s).toLatin1().constData()); case NoSectionIndex: case FirstSectionIndex: case LastSectionIndex: case CalendarPopupIndex: // these cases can't happen break; } return -1; } int QDateTimeParser::sectionMaxSize(int index) const { const SectionNode &sn = sectionNode(index); return sectionMaxSize(sn.type, sn.count); } /*! \internal Returns the text of section \a s. This function operates on the arg text rather than edit->text(). */ QString QDateTimeParser::sectionText(const QString &text, int sectionIndex, int index) const { const SectionNode &sn = sectionNode(sectionIndex); switch (sn.type) { case NoSectionIndex: case FirstSectionIndex: case LastSectionIndex: return QString(); default: break; } return text.mid(index, sectionSize(sectionIndex)); } QString QDateTimeParser::sectionText(int sectionIndex) const { const SectionNode &sn = sectionNode(sectionIndex); switch (sn.type) { case NoSectionIndex: case FirstSectionIndex: case LastSectionIndex: return QString(); default: break; } return displayText().mid(sn.pos, sectionSize(sectionIndex)); } #ifndef QT_NO_TEXTDATE /*! \internal:skipToNextSection Parses the part of \a text that corresponds to \a s and returns the value of that field. Sets *stateptr to the right state if stateptr != 0. */ int QDateTimeParser::parseSection(const QDateTime ¤tValue, int sectionIndex, QString &text, int &cursorPosition, int index, State &state, int *usedptr) const { state = Invalid; int num = 0; const SectionNode &sn = sectionNode(sectionIndex); if ((sn.type & Internal) == Internal) { qWarning("QDateTimeParser::parseSection Internal error (%s %d)", qPrintable(sectionName(sn.type)), sectionIndex); return -1; } const int sectionmaxsize = sectionMaxSize(sectionIndex); QString sectiontext = text.mid(index, sectionmaxsize); int sectiontextSize = sectiontext.size(); QDTPDEBUG << "sectionValue for" << sectionName(sn.type) << "with text" << text << "and st" << sectiontext << text.mid(index, sectionmaxsize) << index; int used = 0; switch (sn.type) { case AmPmSection: { const int ampm = findAmPm(sectiontext, sectionIndex, &used); switch (ampm) { case AM: // sectiontext == AM case PM: // sectiontext == PM num = ampm; state = Acceptable; break; case PossibleAM: // sectiontext => AM case PossiblePM: // sectiontext => PM num = ampm - 2; state = Intermediate; break; case PossibleBoth: // sectiontext => AM|PM num = 0; state = Intermediate; break; case Neither: state = Invalid; QDTPDEBUG << "invalid because findAmPm(" << sectiontext << ") returned -1"; break; default: QDTPDEBUGN("This should never happen (findAmPm returned %d)", ampm); break; } if (state != Invalid) { QString str = text; text.replace(index, used, sectiontext.left(used)); } break; } case MonthSection: case DayOfWeekSection: if (sn.count >= 3) { if (sn.type == MonthSection) { int min = 1; const QDate minDate = getMinimum().date(); if (currentValue.date().year() == minDate.year()) { min = minDate.month(); } num = findMonth(sectiontext.toLower(), min, sectionIndex, §iontext, &used); } else { num = findDay(sectiontext.toLower(), 1, sectionIndex, §iontext, &used); } if (num != -1) { state = (used == sectiontext.size() ? Acceptable : Intermediate); QString str = text; text.replace(index, used, sectiontext.left(used)); } else { state = Intermediate; } break; } // fall through case DaySection: case YearSection: case YearSection2Digits: case Hour12Section: case Hour24Section: case MinuteSection: case SecondSection: case MSecSection: { if (sectiontextSize == 0) { num = 0; used = 0; state = Intermediate; } else { const int absMax = absoluteMax(sectionIndex); QLocale loc; bool ok = true; int last = -1; used = -1; QString digitsStr(sectiontext); for (int i = 0; i < sectiontextSize; ++i) { if (digitsStr.at(i).isSpace()) { sectiontextSize = i; break; } } const int max = qMin(sectionmaxsize, sectiontextSize); for (int digits = max; digits >= 1; --digits) { digitsStr.truncate(digits); int tmp = (int)loc.toUInt(digitsStr, &ok, 10); if (ok && sn.type == Hour12Section) { if (tmp > 12) { tmp = -1; ok = false; } else if (tmp == 12) { tmp = 0; } } if (ok && tmp <= absMax) { QDTPDEBUG << sectiontext.left(digits) << tmp << digits; last = tmp; used = digits; break; } } if (last == -1) { QChar first(sectiontext.at(0)); if (separators.at(sectionIndex + 1).startsWith(first)) { used = 0; state = Intermediate; } else { state = Invalid; QDTPDEBUG << "invalid because" << sectiontext << "can't become a uint" << last << ok; } } else { num += last; const FieldInfo fi = fieldInfo(sectionIndex); const bool done = (used == sectionmaxsize); if (!done && fi & Fraction) { // typing 2 in a zzz field should be .200, not .002 for (int i=used; i absMax) { state = Intermediate; } else if (!done && (fi & (FixedWidth|Numeric)) == (FixedWidth|Numeric)) { if (skipToNextSection(sectionIndex, currentValue, digitsStr)) { state = Acceptable; const int missingZeroes = sectionmaxsize - digitsStr.size(); text.insert(index, QString().fill(QLatin1Char('0'), missingZeroes)); used = sectionmaxsize; cursorPosition += missingZeroes; } else { state = Intermediate;; } } else { state = Acceptable; } } } break; } default: qWarning("QDateTimeParser::parseSection Internal error (%s %d)", qPrintable(sectionName(sn.type)), sectionIndex); return -1; } if (usedptr) *usedptr = used; return (state != Invalid ? num : -1); } #endif // QT_NO_TEXTDATE #ifndef QT_NO_DATESTRING /*! \internal */ QDateTimeParser::StateNode QDateTimeParser::parse(QString &input, int &cursorPosition, const QDateTime ¤tValue, bool fixup) const { const QDateTime minimum = getMinimum(); const QDateTime maximum = getMaximum(); State state = Acceptable; QDateTime newCurrentValue; int pos = 0; bool conflicts = false; const int sectionNodesCount = sectionNodes.size(); QDTPDEBUG << "parse" << input; { int year, month, day, hour12, hour, minute, second, msec, ampm, dayofweek, year2digits; getDateFromJulianDay(currentValue.date().toJulianDay(), &year, &month, &day); year2digits = year % 100; hour = currentValue.time().hour(); hour12 = -1; minute = currentValue.time().minute(); second = currentValue.time().second(); msec = currentValue.time().msec(); dayofweek = currentValue.date().dayOfWeek(); ampm = -1; Sections isSet = NoSection; int num; State tmpstate; for (int index=0; state != Invalid && index(state, tmpstate); if (state == Intermediate && context == FromString) { state = Invalid; break; } QDTPDEBUG << index << sectionName(sectionType(index)) << "is set to" << pos << "state is" << stateName(state); if (state != Invalid) { switch (sn.type) { case Hour24Section: current = &hour; break; case Hour12Section: current = &hour12; break; case MinuteSection: current = &minute; break; case SecondSection: current = &second; break; case MSecSection: current = &msec; break; case YearSection: current = &year; break; case YearSection2Digits: current = &year2digits; break; case MonthSection: current = &month; break; case DayOfWeekSection: current = &dayofweek; break; case DaySection: current = &day; num = qMax(1, num); break; case AmPmSection: current = &m; break; default: qWarning("QDateTimeParser::parse Internal error (%s)", qPrintable(sectionName(sn.type))); break; } if (!current) { qWarning("QDateTimeParser::parse Internal error 2"); return StateNode(); } if (isSet & sn.type && *current != num) { QDTPDEBUG << "CONFLICT " << sectionName(sn.type) << *current << num; conflicts = true; if (index != currentSectionIndex || num == -1) { continue; } } if (num != -1) *current = num; isSet |= sn.type; } } if (state != Invalid && QStringRef(&input, pos, input.size() - pos) != separators.last()) { QDTPDEBUG << "invalid because" << input.mid(pos) << "!=" << separators.last() << pos; state = Invalid; } if (state != Invalid) { if (parserType != QVariant::Time) { if (year % 100 != year2digits) { switch (isSet & (YearSection2Digits|YearSection)) { case YearSection2Digits: year = (year / 100) * 100; year += year2digits; break; case ((uint)YearSection2Digits|(uint)YearSection): { conflicts = true; const SectionNode &sn = sectionNode(currentSectionIndex); if (sn.type == YearSection2Digits) { year = (year / 100) * 100; year += year2digits; } break; } default: break; } } const QDate date(year, month, day); const int diff = dayofweek - date.dayOfWeek(); if (diff != 0 && state == Acceptable && isSet & DayOfWeekSection) { conflicts = isSet & DaySection; const SectionNode &sn = sectionNode(currentSectionIndex); if (sn.type == DayOfWeekSection || currentSectionIndex == -1) { // dayofweek should be preferred day += diff; if (day <= 0) { day += 7; } else if (day > date.daysInMonth()) { day -= 7; } QDTPDEBUG << year << month << day << dayofweek << diff << QDate(year, month, day).dayOfWeek(); } } bool needfixday = false; if (sectionType(currentSectionIndex) & (DaySection|DayOfWeekSection)) { cachedDay = day; } else if (cachedDay > day) { day = cachedDay; needfixday = true; } if (!QDate::isValid(year, month, day)) { if (day < 32) { cachedDay = day; } if (day > 28 && QDate::isValid(year, month, 1)) { needfixday = true; } } if (needfixday) { if (context == FromString) { state = Invalid; goto end; } if (state == Acceptable && fixday) { day = qMin(day, QDate(year, month, 1).daysInMonth()); const QLocale loc = locale(); for (int i=0; i '%s'(%s)", input.toLatin1().constData(), newCurrentValue.toString(QLatin1String("yyyy/MM/dd hh:mm:ss.zzz")).toLatin1().constData(), stateName(state).toLatin1().constData()); } end: if (newCurrentValue.isValid()) { if (context != FromString && state != Invalid && newCurrentValue < minimum) { const QLatin1Char space(' '); if (newCurrentValue >= minimum) qWarning("QDateTimeParser::parse Internal error 3 (%s %s)", qPrintable(newCurrentValue.toString()), qPrintable(minimum.toString())); bool done = false; state = Invalid; for (int i=0; i= minimum && copy <= maximum) { state = Intermediate; done = true; } break; } } case MonthSection: if (sn.count >= 3) { int tmp = newCurrentValue.date().month(); // I know the first possible month makes the date too early while ((tmp = findMonth(t, tmp + 1, i)) != -1) { const QDateTime copy(newCurrentValue.addMonths(tmp - newCurrentValue.date().month())); if (copy >= minimum && copy <= maximum) break; // break out of while } if (tmp == -1) { break; } state = Intermediate; done = true; break; } // fallthrough default: { int toMin; int toMax; if (sn.type & TimeSectionMask) { if (newCurrentValue.daysTo(minimum) != 0) { break; } toMin = newCurrentValue.time().msecsTo(minimum.time()); if (newCurrentValue.daysTo(maximum) > 0) { toMax = -1; // can't get to max } else { toMax = newCurrentValue.time().msecsTo(maximum.time()); } } else { toMin = newCurrentValue.daysTo(minimum); toMax = newCurrentValue.daysTo(maximum); } const int maxChange = QDateTimeParser::maxChange(i); if (toMin > maxChange) { QDTPDEBUG << "invalid because toMin > maxChange" << toMin << maxChange << t << newCurrentValue << minimum; state = Invalid; done = true; break; } else if (toMax > maxChange) { toMax = -1; // can't get to max } const int min = getDigit(minimum, i); if (min == -1) { qWarning("QDateTimeParser::parse Internal error 4 (%s)", qPrintable(sectionName(sn.type))); state = Invalid; done = true; break; } int max = toMax != -1 ? getDigit(maximum, i) : absoluteMax(i, newCurrentValue); int pos = cursorPosition - sn.pos; if (pos < 0 || pos >= t.size()) pos = -1; if (!potentialValue(t.simplified(), min, max, i, newCurrentValue, pos)) { QDTPDEBUG << "invalid because potentialValue(" << t.simplified() << min << max << sectionName(sn.type) << "returned" << toMax << toMin << pos; state = Invalid; done = true; break; } state = Intermediate; done = true; break; } } } } } else { if (context == FromString) { // optimization Q_ASSERT(getMaximum().date().toJulianDay() == 4642999); if (newCurrentValue.date().toJulianDay() > 4642999) state = Invalid; } else { if (newCurrentValue > getMaximum()) state = Invalid; } QDTPDEBUG << "not checking intermediate because newCurrentValue is" << newCurrentValue << getMinimum() << getMaximum(); } } StateNode node; node.input = input; node.state = state; node.conflicts = conflicts; node.value = newCurrentValue.toTimeSpec(spec); text = input; return node; } #endif // QT_NO_DATESTRING #ifndef QT_NO_TEXTDATE /*! \internal finds the first possible monthname that \a str1 can match. Starting from \a index; str should already by lowered */ int QDateTimeParser::findMonth(const QString &str1, int startMonth, int sectionIndex, QString *usedMonth, int *used) const { int bestMatch = -1; int bestCount = 0; if (!str1.isEmpty()) { const SectionNode &sn = sectionNode(sectionIndex); if (sn.type != MonthSection) { qWarning("QDateTimeParser::findMonth Internal error"); return -1; } QLocale::FormatType type = sn.count == 3 ? QLocale::ShortFormat : QLocale::LongFormat; QLocale l = locale(); for (int month=startMonth; month<=12; ++month) { QString str2 = l.monthName(month, type).toLower(); if (str1.startsWith(str2)) { if (used) { QDTPDEBUG << "used is set to" << str2.size(); *used = str2.size(); } if (usedMonth) *usedMonth = l.monthName(month, type); return month; } if (context == FromString) continue; const int limit = qMin(str1.size(), str2.size()); QDTPDEBUG << "limit is" << limit << str1 << str2; bool equal = true; for (int i=0; i bestCount) { bestCount = i; bestMatch = month; } break; } } if (equal) { if (used) *used = limit; if (usedMonth) *usedMonth = l.monthName(month, type); return month; } } if (usedMonth && bestMatch != -1) *usedMonth = l.monthName(bestMatch, type); } if (used) { QDTPDEBUG << "used is set to" << bestCount; *used = bestCount; } return bestMatch; } int QDateTimeParser::findDay(const QString &str1, int startDay, int sectionIndex, QString *usedDay, int *used) const { int bestMatch = -1; int bestCount = 0; if (!str1.isEmpty()) { const SectionNode &sn = sectionNode(sectionIndex); if (!(sn.type & (DaySection|DayOfWeekSection))) { qWarning("QDateTimeParser::findDay Internal error"); return -1; } const QLocale l = locale(); for (int day=startDay; day<=7; ++day) { const QString str2 = l.dayName(day, sn.count == 4 ? QLocale::LongFormat : QLocale::ShortFormat); if (str1.startsWith(str2.toLower())) { if (used) *used = str2.size(); if (usedDay) { *usedDay = str2; } return day; } if (context == FromString) continue; const int limit = qMin(str1.size(), str2.size()); bool found = true; for (int i=0; i bestCount) { bestCount = i; bestMatch = day; } found = false; break; } } if (found) { if (used) *used = limit; if (usedDay) *usedDay = str2; return day; } } if (usedDay && bestMatch != -1) { *usedDay = l.dayName(bestMatch, sn.count == 4 ? QLocale::LongFormat : QLocale::ShortFormat); } } if (used) *used = bestCount; return bestMatch; } #endif // QT_NO_TEXTDATE /*! \internal returns 0 if str == QDateTimeEdit::tr("AM") 1 if str == QDateTimeEdit::tr("PM") 2 if str can become QDateTimeEdit::tr("AM") 3 if str can become QDateTimeEdit::tr("PM") 4 if str can become QDateTimeEdit::tr("PM") and can become QDateTimeEdit::tr("AM") -1 can't become anything sensible */ int QDateTimeParser::findAmPm(QString &str, int index, int *used) const { const SectionNode &s = sectionNode(index); if (s.type != AmPmSection) { qWarning("QDateTimeParser::findAmPm Internal error"); return -1; } if (used) *used = str.size(); if (str.trimmed().isEmpty()) { return PossibleBoth; } const QLatin1Char space(' '); int size = sectionMaxSize(index); enum { amindex = 0, pmindex = 1 }; QString ampm[2]; ampm[amindex] = getAmPmText(AmText, s.count == 1 ? UpperCase : LowerCase); ampm[pmindex] = getAmPmText(PmText, s.count == 1 ? UpperCase : LowerCase); for (int i=0; i<2; ++i) ampm[i].truncate(size); QDTPDEBUG << "findAmPm" << str << ampm[0] << ampm[1]; if (str.indexOf(ampm[amindex], 0, Qt::CaseInsensitive) == 0) { str = ampm[amindex]; return AM; } else if (str.indexOf(ampm[pmindex], 0, Qt::CaseInsensitive) == 0) { str = ampm[pmindex]; return PM; } else if (context == FromString || (str.count(space) == 0 && str.size() >= size)) { return Neither; } size = qMin(size, str.size()); bool broken[2] = {false, false}; for (int i=0; i= min && val <= max && str.size() == size) { return true; } else if (val > max) { return false; } else if (str.size() == size && val < min) { return false; } const int len = size - str.size(); for (int i=0; i= 0) { QString tmp = str; tmp.insert(insert, QLatin1Char('0' + j)); if (potentialValue(tmp, min, max, index, currentValue, insert)) return true; } } } return false; } bool QDateTimeParser::skipToNextSection(int index, const QDateTime ¤t, const QString &text) const { Q_ASSERT(current >= getMinimum() && current <= getMaximum()); const SectionNode &node = sectionNode(index); Q_ASSERT(text.size() < sectionMaxSize(index)); const QDateTime maximum = getMaximum(); const QDateTime minimum = getMinimum(); QDateTime tmp = current; int min = absoluteMin(index); setDigit(tmp, index, min); if (tmp < minimum) { min = getDigit(minimum, index); } int max = absoluteMax(index, current); setDigit(tmp, index, max); if (tmp > maximum) { max = getDigit(maximum, index); } int pos = cursorPosition() - node.pos; if (pos < 0 || pos >= text.size()) pos = -1; const bool potential = potentialValue(text, min, max, index, current, pos); return !potential; /* If the value potentially can become another valid entry we * don't want to skip to the next. E.g. In a M field (month * without leading 0 if you type 1 we don't want to autoskip but * if you type 3 we do */ } /*! \internal For debugging. Returns the name of the section \a s. */ QString QDateTimeParser::sectionName(int s) const { switch (s) { case QDateTimeParser::AmPmSection: return QLatin1String("AmPmSection"); case QDateTimeParser::DaySection: return QLatin1String("DaySection"); case QDateTimeParser::DayOfWeekSection: return QLatin1String("DayOfWeekSection"); case QDateTimeParser::Hour24Section: return QLatin1String("Hour24Section"); case QDateTimeParser::Hour12Section: return QLatin1String("Hour12Section"); case QDateTimeParser::MSecSection: return QLatin1String("MSecSection"); case QDateTimeParser::MinuteSection: return QLatin1String("MinuteSection"); case QDateTimeParser::MonthSection: return QLatin1String("MonthSection"); case QDateTimeParser::SecondSection: return QLatin1String("SecondSection"); case QDateTimeParser::YearSection: return QLatin1String("YearSection"); case QDateTimeParser::YearSection2Digits: return QLatin1String("YearSection2Digits"); case QDateTimeParser::NoSection: return QLatin1String("NoSection"); case QDateTimeParser::FirstSection: return QLatin1String("FirstSection"); case QDateTimeParser::LastSection: return QLatin1String("LastSection"); default: return QLatin1String("Unknown section ") + QString::number(s); } } /*! \internal For debugging. Returns the name of the state \a s. */ QString QDateTimeParser::stateName(int s) const { switch (s) { case Invalid: return QLatin1String("Invalid"); case Intermediate: return QLatin1String("Intermediate"); case Acceptable: return QLatin1String("Acceptable"); default: return QLatin1String("Unknown state ") + QString::number(s); } } #ifndef QT_NO_DATESTRING bool QDateTimeParser::fromString(const QString &t, QDate *date, QTime *time) const { QDateTime val(QDate(1900, 1, 1), QDATETIMEEDIT_TIME_MIN); QString text = t; int copy = -1; const StateNode tmp = parse(text, copy, val, false); if (tmp.state != Acceptable || tmp.conflicts) { return false; } if (time) { const QTime t = tmp.value.time(); if (!t.isValid()) { return false; } *time = t; } if (date) { const QDate d = tmp.value.date(); if (!d.isValid()) { return false; } *date = d; } return true; } #endif // QT_NO_DATESTRING QDateTime QDateTimeParser::getMinimum() const { return QDateTime(QDATETIMEEDIT_DATE_MIN, QDATETIMEEDIT_TIME_MIN, spec); } QDateTime QDateTimeParser::getMaximum() const { return QDateTime(QDATETIMEEDIT_DATE_MAX, QDATETIMEEDIT_TIME_MAX, spec); } QString QDateTimeParser::getAmPmText(AmPm ap, Case cs) const { if (ap == AmText) { return (cs == UpperCase ? QLatin1String("AM") : QLatin1String("am")); } else { return (cs == UpperCase ? QLatin1String("PM") : QLatin1String("pm")); } } /* \internal I give arg2 preference because arg1 is always a QDateTime. */ bool operator==(const QDateTimeParser::SectionNode &s1, const QDateTimeParser::SectionNode &s2) { return (s1.type == s2.type) && (s1.pos == s2.pos) && (s1.count == s2.count); } #endif // QT_BOOTSTRAPPED QT_END_NAMESPACE