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diff --git a/qmake/tools/qdatetime.cpp b/qmake/tools/qdatetime.cpp new file mode 100644 index 0000000..93e40a8 --- a/dev/null +++ b/qmake/tools/qdatetime.cpp @@ -0,0 +1,2490 @@ +/**************************************************************************** +** $Id$ +** +** Implementation of date and time classes +** +** Created : 940124 +** +** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. +** +** This file is part of the tools module of the Qt GUI Toolkit. +** +** This file may be distributed under the terms of the Q Public License +** as defined by Trolltech AS of Norway and appearing in the file +** LICENSE.QPL included in the packaging of this file. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition +** licenses may use this file in accordance with the Qt Commercial License +** Agreement provided with the Software. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for +** information about Qt Commercial License Agreements. +** See http://www.trolltech.com/qpl/ for QPL licensing information. +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + +// Get the system specific includes and defines +#include "qplatformdefs.h" + +#include "qdatetime.h" +#include "qdatastream.h" +#include "qregexp.h" + +#include <stdio.h> +#ifndef Q_OS_TEMP +#include <time.h> +#endif + +#if defined(Q_OS_WIN32) +#include <windows.h> +#endif + +static const uint FIRST_DAY = 2361222; // Julian day for 1752-09-14 +static const int FIRST_YEAR = 1752; // ### wrong for many countries +static const uint SECS_PER_DAY = 86400; +static const uint MSECS_PER_DAY = 86400000; +static const uint SECS_PER_HOUR = 3600; +static const uint MSECS_PER_HOUR= 3600000; +static const uint SECS_PER_MIN = 60; +static const uint MSECS_PER_MIN = 60000; + +static const short monthDays[] = { + 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; + +static const char * const qt_shortMonthNames[] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; + +#ifndef QT_NO_DATESTRING +/***************************************************************************** + Some static function used by QDate, QTime and QDateTime + *****************************************************************************/ + +// Replaces tokens by their value. See QDateTime::toString() for a list of valid tokens +static QString getFmtString( const QString& f, const QTime* dt = 0, const QDate* dd = 0, bool am_pm = FALSE ) +{ + if ( f.isEmpty() ) + return QString::null; + + QString buf = f; + + if ( dt ) { + if ( f == "h" ) { + if ( ( am_pm ) && ( dt->hour() > 12 ) ) + buf = QString::number( dt->hour() - 12 ); + else if ( ( am_pm ) && ( dt->hour() == 0 ) ) + buf = "12"; + else + buf = QString::number( dt->hour() ); + } else if ( f == "hh" ) { + if ( ( am_pm ) && ( dt->hour() > 12 ) ) + buf = QString::number( dt->hour() - 12 ).rightJustify( 2, '0', TRUE ); + else if ( ( am_pm ) && ( dt->hour() == 0 ) ) + buf = "12"; + else + buf = QString::number( dt->hour() ).rightJustify( 2, '0', TRUE ); + } else if ( f == "m" ) { + buf = QString::number( dt->minute() ); + } else if ( f == "mm" ) { + buf = QString::number( dt->minute() ).rightJustify( 2, '0', TRUE ); + } else if ( f == "s" ) { + buf = QString::number( dt->second() ); + } else if ( f == "ss" ) { + buf = QString::number( dt->second() ).rightJustify( 2, '0', TRUE ); + } else if ( f == "z" ) { + buf = QString::number( dt->msec() ); + } else if ( f == "zzz" ) { + buf = QString::number( dt->msec() ).rightJustify( 3, '0', TRUE ); + } else if ( f == "ap" ) { + buf = dt->hour() < 12 ? "am" : "pm"; + } else if ( f == "AP" ) { + buf = dt->hour() < 12 ? "AM" : "PM"; + } + } + + if ( dd ) { + if ( f == "d" ) { + buf = QString::number( dd->day() ); + } else if ( f == "dd" ) { + buf = QString::number( dd->day() ).rightJustify( 2, '0', TRUE ); + } else if ( f == "M" ) { + buf = QString::number( dd->month() ); + } else if ( f == "MM" ) { + buf = QString::number( dd->month() ).rightJustify( 2, '0', TRUE ); +#ifndef QT_NO_TEXTDATE + } else if ( f == "ddd" ) { + buf = dd->shortDayName( dd->dayOfWeek() ); + } else if ( f == "dddd" ) { + buf = dd->longDayName( dd->dayOfWeek() ); + } else if ( f == "MMM" ) { + buf = dd->shortMonthName( dd->month() ); + } else if ( f == "MMMM" ) { + buf = dd->longMonthName( dd->month() ); +#endif + } else if ( f == "yy" ) { + buf = QString::number( dd->year() ).right( 2 ); + } else if ( f == "yyyy" ) { + buf = QString::number( dd->year() ); + } + } + + return buf; +} + +// Parses the format string and uses getFmtString to get the values for the tokens. Ret +static QString fmtDateTime( const QString& f, const QTime* dt = 0, const QDate* dd = 0 ) +{ + if ( f.isEmpty() ) { + return QString::null; + } + + bool ap = ( f.contains( "AP" ) || f.contains( "ap" ) ); + + QString buf; + QString frm; + QChar status = '0'; + + for ( int i = 0; i < (int)f.length(); ++i ) { + + if ( f[ i ] == status ) { + if ( ( ap ) && ( ( f[ i ] == 'P' ) || ( f[ i ] == 'p' ) ) ) + status = '0'; + frm += f[ i ]; + } else { + buf += getFmtString( frm, dt, dd, ap ); + frm = QString::null; + if ( ( f[ i ] == 'h' ) || ( f[ i ] == 'm' ) || ( f[ i ] == 's' ) || ( f[ i ] == 'z' ) ) { + status = f[ i ]; + frm += f[ i ]; + } else if ( ( f[ i ] == 'd' ) || ( f[ i ] == 'M' ) || ( f[ i ] == 'y' ) ) { + status = f[ i ]; + frm += f[ i ]; + } else if ( ( ap ) && ( f[ i ] == 'A' ) ) { + status = 'P'; + frm += f[ i ]; + } else if( ( ap ) && ( f[ i ] == 'a' ) ) { + status = 'p'; + frm += f[ i ]; + } else { + buf += f[ i ]; + status = '0'; + } + } + } + + buf += getFmtString( frm, dt, dd, ap ); + + return buf; +} +#endif // QT_NO_DATESTRING + +/***************************************************************************** + QDate member functions + *****************************************************************************/ + +/*! + \class QDate qdatetime.h + \reentrant + \brief The QDate class provides date functions. + + \ingroup time + \mainclass + + A QDate object contains a calendar date, i.e. year, month, and day + numbers, in the modern Western (Gregorian) calendar. It can read + the current date from the system clock. It provides functions for + comparing dates and for manipulating dates, e.g. by adding a + number of days or months or years. + + A QDate object is typically created either by giving the year, + month and day numbers explicitly, or by using the static function + currentDate(), which creates a QDate object containing the system + clock's date. An explicit date can also be set using setYMD(). 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 + leapYear() function indicates whether this date is in a leap year. + + Note that QDate should not be used for date calculations for dates + prior to the introduction of the Gregorian calendar. This calendar + was adopted by England from the 14<sup><small>th</small></sup> + September 1752 (hence this is the earliest valid QDate), and + subsequently by most other Western countries, until 1923. + + The end of time is reached around the year 8000, by which time we + expect Qt to be obsolete. + + \sa QTime QDateTime QDateEdit QDateTimeEdit +*/ + +/*! + \enum Qt::DateFormat + + \value TextDate (default) Qt format + \value ISODate ISO 8601 extended format (YYYY-MM-DD, or with time, + YYYY-MM-DDTHH:MM:SS) + \value LocalDate locale dependent format +*/ + + +/*! + \enum Qt::TimeSpec + + \value LocalTime Locale dependent time (Timezones and Daylight Savings Time) + \value UTC Coordinated Universal Time, replaces Greenwich Time +*/ + +/*! + \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. + + \a y must be in the range 1752..8000, \a m must be in the range + 1..12, and \a d must be in the range 1..31. + + \warning If \a y is in the range 0..99, it is interpreted as + 1900..1999. + + \sa isValid() +*/ + +QDate::QDate( int y, int m, int d ) +{ + jd = 0; + setYMD( y, m, d ); +} + + +/*! + \fn bool QDate::isNull() const + + Returns TRUE if the date is null; otherwise returns FALSE. A null + date is invalid. + + \sa isValid() +*/ + + +/*! + Returns TRUE if this date is valid; otherwise returns FALSE. + + \sa isNull() +*/ + +bool QDate::isValid() const +{ + return jd >= FIRST_DAY; +} + + +/*! + Returns the year (1752..8000) of this date. + + \sa month(), day() +*/ + +int QDate::year() const +{ + int y, m, d; + julianToGregorian( jd, y, m, d ); + return y; +} + +/*! + Returns the month (January=1..December=12) of this date. + + \sa year(), day() +*/ + +int QDate::month() const +{ + int y, m, d; + julianToGregorian( jd, y, m, d ); + return m; +} + +/*! + Returns the day of the month (1..31) of this date. + + \sa year(), month(), dayOfWeek() +*/ + +int QDate::day() const +{ + int y, m, d; + julianToGregorian( jd, y, m, d ); + return d; +} + +/*! + Returns the weekday (Monday=1..Sunday=7) for this date. + + \sa day(), dayOfYear() +*/ + +int QDate::dayOfWeek() const +{ + return ( jd % 7 ) + 1; +} + +/*! + Returns the day of the year (1..365) for this date. + + \sa day(), dayOfWeek() +*/ + +int QDate::dayOfYear() const +{ + return jd - gregorianToJulian(year(), 1, 1) + 1; +} + +/*! + Returns the number of days in the month (28..31) for this date. + + \sa day(), daysInYear() +*/ + +int QDate::daysInMonth() const +{ + int y, m, d; + julianToGregorian( jd, y, m, d ); + if ( m == 2 && leapYear(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; + julianToGregorian( jd, y, m, d ); + return leapYear( 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. + + \sa isValid() +*/ + +int QDate::weekNumber( int *yearNumber ) const +{ + if ( !isValid() ) + return 0; + + int dow = dayOfWeek(); + int doy = dayOfYear(); + int currYear = year(); + int jan1WeekDay = QDate( currYear, 1, 1 ).dayOfWeek(); + int yearNum; + int weekNum; + + if ( doy <= (8 - jan1WeekDay) && jan1WeekDay > 4 ) { + yearNum = currYear - 1; + weekNum = 52; + if ( jan1WeekDay == 5 || + (jan1WeekDay == 6 && QDate::leapYear(yearNum)) ) + weekNum++; + } else { + int totalDays = 365; + if ( QDate::leapYear(currYear) ) + totalDays++; + + if ( (totalDays - doy < 4 - dow) + || (jan1WeekDay == 7 && totalDays - doy < 3) ) { + yearNum = currYear + 1; + weekNum = 1; + } else { + int j = doy + ( 7 - dow ) + ( jan1WeekDay - 1 ); + yearNum = currYear; + weekNum = j / 7; + if ( jan1WeekDay > 4 ) + weekNum--; + } + } + if ( yearNumber ) + *yearNumber = yearNum; + return weekNum; +} + +/*! + \fn QString QDate::monthName( int month ) + \obsolete + + Use shortMonthName() instead. +*/ +#ifndef QT_NO_TEXTDATE +/*! + Returns the name of the \a month. + + 1 = "Jan", 2 = "Feb", ... 12 = "Dec" + + The month names will be localized according to the system's locale + settings. + + \sa toString(), longMonthName(), shortDayName(), longDayName() +*/ + +QString QDate::shortMonthName( int month ) +{ +#if defined(QT_CHECK_RANGE) + if ( month < 1 || month > 12 ) { + qWarning( "QDate::shortMonthName: Parameter out ouf range." ); + month = 1; + } +#endif +#ifndef Q_WS_WIN + char buffer[255]; + tm tt; + memset( &tt, 0, sizeof( tm ) ); + tt.tm_mon = month - 1; + if ( strftime( buffer, sizeof( buffer ), "%b", &tt ) ) + return QString::fromLocal8Bit( buffer ); +#else + SYSTEMTIME st; + memset( &st, 0, sizeof(SYSTEMTIME) ); + st.wYear = 2000; + st.wMonth = month; + st.wDay = 1; + const wchar_t mmm_t[] = L"MMM"; // workaround for Borland + QT_WA( { + TCHAR buf[255]; + if ( GetDateFormat( LOCALE_USER_DEFAULT, 0, &st, mmm_t, buf, 255 ) ) + return QString::fromUcs2( (ushort*)buf ); + } , { + char buf[255]; + if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "MMM", (char*)&buf, 255 ) ) + return QString::fromLocal8Bit( buf ); + } ); +#endif + return QString::null; +} + +/*! + Returns the long name of the \a month. + + 1 = "January", 2 = "February", ... 12 = "December" + + The month names will be localized according to the system's locale + settings. + + \sa toString(), shortMonthName(), shortDayName(), longDayName() +*/ + +QString QDate::longMonthName( int month ) +{ +#if defined(QT_CHECK_RANGE) + if ( month < 1 || month > 12 ) { + qWarning( "QDate::longMonthName: Parameter out ouf range." ); + month = 1; + } +#endif +#ifndef Q_WS_WIN + char buffer[255]; + tm tt; + memset( &tt, 0, sizeof( tm ) ); + tt.tm_mon = month - 1; + if ( strftime( buffer, sizeof( buffer ), "%B", &tt ) ) + return QString::fromLocal8Bit( buffer ); +#else + SYSTEMTIME st; + memset( &st, 0, sizeof(SYSTEMTIME) ); + st.wYear = 2000; + st.wMonth = month; + st.wDay = 1 ; + const wchar_t mmmm_t[] = L"MMMM"; // workaround for Borland + QT_WA( { + TCHAR buf[255]; + if ( GetDateFormat( LOCALE_USER_DEFAULT, 0, &st, mmmm_t, buf, 255 ) ) + return QString::fromUcs2( (ushort*)buf ); + } , { + char buf[255]; + if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "MMMM", (char*)&buf, 255 ) ) + return QString::fromLocal8Bit( buf ); + } ) +#endif + + return QString::null; +} + +/*! + \fn QString QDate::dayName( int weekday ) + \obsolete + + Use shortDayName() instead. +*/ + +/*! + Returns the name of the \a weekday. + + 1 = "Mon", 2 = "Tue", ... 7 = "Sun" + + The day names will be localized according to the system's locale + settings. + + \sa toString(), shortMonthName(), longMonthName(), longDayName() +*/ + +QString QDate::shortDayName( int weekday ) +{ +#if defined(QT_CHECK_RANGE) + if ( weekday < 1 || weekday > 7 ) { + qWarning( "QDate::shortDayName: Parameter out of range." ); + weekday = 1; + } +#endif +#ifndef Q_WS_WIN + char buffer[255]; + tm tt; + memset( &tt, 0, sizeof( tm ) ); + tt.tm_wday = ( weekday == 7 ) ? 0 : weekday; + if ( strftime( buffer, sizeof( buffer ), "%a", &tt ) ) + return QString::fromLocal8Bit( buffer ); +#else + SYSTEMTIME st; + memset( &st, 0, sizeof(SYSTEMTIME) ); + st.wYear = 2001; + st.wMonth = 10; + st.wDayOfWeek = ( weekday == 7 ) ? 0 : weekday; + st.wDay = 21 + st.wDayOfWeek; + const wchar_t ddd_t[] = L"ddd"; // workaround for Borland + QT_WA( { + TCHAR buf[255]; + if ( GetDateFormat( LOCALE_USER_DEFAULT, 0, &st, ddd_t, buf, 255 ) ) + return QString::fromUcs2( (ushort*)buf ); + } , { + char buf[255]; + if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "ddd", (char*)&buf, 255 ) ) + return QString::fromLocal8Bit( buf ); + } ); +#endif + + return QString::null; +} + +/*! + Returns the long name of the \a weekday. + + 1 = "Monday", 2 = "Tuesday", ... 7 = "Sunday" + + The day names will be localized according to the system's locale + settings. + + \sa toString(), shortDayName(), shortMonthName(), longMonthName() +*/ + +QString QDate::longDayName( int weekday ) +{ +#if defined(QT_CHECK_RANGE) + if ( weekday < 1 || weekday > 7 ) { + qWarning( "QDate::longDayName: Parameter out of range." ); + weekday = 1; + } +#endif +#ifndef Q_WS_WIN + char buffer[255]; + tm tt; + memset( &tt, 0, sizeof( tm ) ); + tt.tm_wday = ( weekday == 7 ) ? 0 : weekday; + if ( strftime( buffer, sizeof( buffer ), "%A", &tt ) ) + return QString::fromLocal8Bit( buffer ); +#else + SYSTEMTIME st; + memset( &st, 0, sizeof(SYSTEMTIME) ); + st.wYear = 2001; + st.wMonth = 10; + st.wDayOfWeek = ( weekday == 7 ) ? 0 : weekday; + st.wDay = 21 + st.wDayOfWeek; + const wchar_t dddd_t[] = L"dddd"; // workaround for Borland + QT_WA( { + TCHAR buf[255]; + if ( GetDateFormat( LOCALE_USER_DEFAULT, 0, &st, dddd_t, buf, 255 ) ) + return QString::fromUcs2( (ushort*)buf ); + } , { + char buf[255]; + if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "dddd", (char*)&buf, 255 ) ) + return QString::fromLocal8Bit( buf ); + } ); +#endif + + return QString::null; +} +#endif //QT_NO_TEXTDATE + +#ifndef QT_NO_DATESTRING + +#if !defined(QT_NO_SPRINTF) +/*! + \overload + + Returns the date as a string. The \a f parameter determines the + format of the string. + + If \a f is \c Qt::TextDate, the string format is "Sat May 20 1995" + (using the shortDayName() and shortMonthName() functions to + generate the string, so the day and month names are locale + specific). + + If \a f is \c Qt::ISODate, the string format corresponds to the + ISO 8601 specification for representations of dates, which is + 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 \a f is \c Qt::LocalDate, the string format depends on the + locale settings of the system. + + \sa shortDayName(), shortMonthName() +*/ +QString QDate::toString( Qt::DateFormat f ) const +{ + int y, m, d; + julianToGregorian( jd, y, m, d ); + switch ( f ) { + case Qt::LocalDate: + { +#ifndef Q_WS_WIN + tm tt; + memset( &tt, 0, sizeof( tm ) ); + char buf[255]; + tt.tm_mday = day(); + tt.tm_mon = month() - 1; + tt.tm_year = year() - 1900; + + static const char * avoidEgcsWarning = "%x"; + if ( strftime( buf, sizeof(buf), avoidEgcsWarning, &tt ) ) + return QString::fromLocal8Bit( buf ); +#else + SYSTEMTIME st; + memset( &st, 0, sizeof(SYSTEMTIME) ); + st.wYear = year(); + st.wMonth = month(); + st.wDay = day(); + QT_WA( { + TCHAR buf[255]; + if ( GetDateFormat( LOCALE_USER_DEFAULT, 0, &st, 0, buf, 255 ) ) + return QString::fromUcs2( (ushort*)buf ); + } , { + char buf[255]; + if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, 0, (char*)&buf, 255 ) ) + return QString::fromLocal8Bit( buf ); + } ); +#endif + return QString::null; + } + default: +#ifndef QT_NO_TEXTDATE + case Qt::TextDate: + { + QString buf = shortDayName( dayOfWeek() ); + buf += ' '; + buf += shortMonthName( m ); + QString t; + t.sprintf( " %d %d", d, y ); + buf += t; + return buf; + } +#endif + case Qt::ISODate: + { + QString month( QString::number( m ).rightJustify( 2, '0' ) ); + QString day( QString::number( d ).rightJustify( 2, '0' ) ); + return QString::number( y ) + "-" + month + "-" + day; + } + } +} +#endif //QT_NO_SPRINTF + +/*! + 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 (1-31) + \row \i dd \i the day as number with a leading zero (01-31) + \row \i ddd + \i the abbreviated localized day name (e.g. 'Mon'..'Sun'). + Uses QDate::shortDayName(). + \row \i dddd + \i the long localized day name (e.g. 'Monday'..'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'..'Dec'). + Uses QDate::shortMonthName(). + \row \i MMMM + \i the long localized month name (e.g. 'January'..'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 (1752-8000) + \endtable + + All other input characters will be ignored. + + Example format strings (assuming that the QDate is the + 20<sup><small>th</small></sup> July 1969): + \table + \header \i Format \i Result + \row \i dd.MM.yyyy \i11 20.07.1969 + \row \i ddd MMMM d yy \i11 Sun July 20 69 + \endtable + + \sa QDate::toString() QTime::toString() + +*/ +QString QDate::toString( const QString& format ) const +{ + return fmtDateTime( format, 0, this ); +} +#endif //QT_NO_DATESTRING + +/*! + Sets the date's year \a y, month \a m and day \a d. + + \a y must be in the range 1752..8000, \a m must be in the range + 1..12, and \a d must be in the range 1..31. + + \warning If \a y is in the range 0..99, it is interpreted as + 1900..1999. + + Returns TRUE if the date is valid; otherwise returns FALSE. +*/ + +bool QDate::setYMD( int y, int m, int d ) +{ + if ( year() == y && month() == m && day() == d ) + return isValid(); + if ( !isValid(y,m,d) ) { +#if defined(QT_CHECK_RANGE) + qWarning( "QDate::setYMD: Invalid date %04d-%02d-%02d", y, m, d ); +#endif + return FALSE; + } + jd = gregorianToJulian( y, m, d ); + return TRUE; +} + +/*! + 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; + d.jd = jd + ndays; + 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). + + \sa addDays() addYears() +*/ + +QDate QDate::addMonths( int nmonths ) const +{ + int y, m, d; + julianToGregorian( jd, y, m, d ); + + 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; + } + } + } + + QDate tmp(y,m,1); + + if( d > tmp.daysInMonth() ) + d = tmp.daysInMonth(); + + QDate date(y, m, d); + return date; + +} + +/*! + Returns a QDate object containing a date \a nyears later than the + date of this object (or earlier if \a nyears is negative). + + \sa addDays(), addMonths() +*/ + +QDate QDate::addYears( int nyears ) const +{ + int y, m, d; + julianToGregorian( jd, y, m, d ); + y += nyears; + QDate date(y, m, d); + return date; +} + + + +/*! + Returns the number of days from this date to \a d (which is + negative if \a d is earlier than this date). + + Example: + \code + QDate d1( 1995, 5, 17 ); // May 17th 1995 + QDate d2( 1995, 5, 20 ); // May 20th 1995 + d1.daysTo( d2 ); // returns 3 + d2.daysTo( d1 ); // returns -3 + \endcode + + \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() +{ + return currentDate( Qt::LocalTime ); +} + +/*! + Returns the current date, as reported by the system clock, for the + TimeSpec \a ts. The default TimeSpec is LocalTime. + + \sa QTime::currentTime(), QDateTime::currentDateTime(), Qt::TimeSpec +*/ +QDate QDate::currentDate( Qt::TimeSpec ts ) +{ + QDate d; +#if defined(Q_OS_WIN32) + SYSTEMTIME t; + memset( &t, 0, sizeof(SYSTEMTIME) ); + if ( ts == Qt::LocalTime ) + GetLocalTime( &t ); + else + GetSystemTime( &t ); + d.jd = gregorianToJulian( t.wYear, t.wMonth, t.wDay ); +#else + time_t ltime; + time( <ime ); + tm *t; + if ( ts == Qt::LocalTime ) + t = localtime( <ime ); + else + t = gmtime( <ime ); + d.jd = gregorianToJulian( t->tm_year + 1900, t->tm_mon + 1, t->tm_mday ); +#endif + return d; +} + +#ifndef QT_NO_DATESTRING +/*! + Returns the QDate represented by the string \a s, using the format + \a f, or an invalid date if the string cannot be parsed. + + Note for \c 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. + + \warning \c Qt::LocalDate cannot be used here. +*/ +QDate QDate::fromString( const QString& s, Qt::DateFormat f ) +{ + if ( ( s.isEmpty() ) || ( f == Qt::LocalDate ) ) { +#if defined(QT_CHECK_RANGE) + qWarning( "QDate::fromString: Parameter out of range." ); +#endif + 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; + default: +#ifndef QT_NO_TEXTDATE + case Qt::TextDate: + { + /* + This will fail gracefully if the input string doesn't + contain any space. + */ + int monthPos = s.find( ' ' ) + 1; + int dayPos = s.find( ' ', monthPos ) + 1; + + QString monthName( s.mid(monthPos, dayPos - monthPos - 1) ); + int month = -1; + + // try English names first + for ( int i = 0; i < 12; i++ ) { + if ( monthName == qt_shortMonthNames[i] ) { + month = i + 1; + break; + } + } + + // try the localized names + if ( month == -1 ) { + for ( int i = 0; i < 12; i++ ) { + if ( monthName == shortMonthName( i + 1 ) ) { + month = i + 1; + break; + } + } + } +#if defined(QT_CHECK_RANGE) + if ( month < 1 || month > 12 ) { + qWarning( "QDate::fromString: Parameter out of range." ); + month = 1; + } +#endif + int day = s.mid( dayPos, 2 ).stripWhiteSpace().toInt(); + int year = s.right( 4 ).toInt(); + return QDate( year, month, day ); + } +#else + break; +#endif + } + return QDate(); +} +#endif //QT_NO_DATESTRING + +/*! + \overload + + Returns TRUE if the specified date (year \a y, month \a m and day + \a d) is valid; otherwise returns FALSE. + + Example: + \code + QDate::isValid( 2002, 5, 17 ); // TRUE May 17th 2002 is valid + QDate::isValid( 2002, 2, 30 ); // FALSE Feb 30th does not exist + QDate::isValid( 2004, 2, 29 ); // TRUE 2004 is a leap year + QDate::isValid( 1202, 6, 6 ); // FALSE 1202 is pre-Gregorian + \endcode + + \warning A \a y value in the range 00..99 is interpreted as + 1900..1999. + + \sa isNull(), setYMD() +*/ + +bool QDate::isValid( int y, int m, int d ) +{ + if ( y >= 0 && y <= 99 ) + y += 1900; + else if ( y < FIRST_YEAR || (y == FIRST_YEAR && (m < 9 || + (m == 9 && d < 14))) ) + return FALSE; + return (d > 0 && m > 0 && m <= 12) && + (d <= monthDays[m] || (d == 29 && m == 2 && leapYear(y))); +} + +/*! + Returns TRUE if the specified year \a y is a leap year; otherwise + returns FALSE. +*/ + +bool QDate::leapYear( int y ) +{ + return y % 4 == 0 && y % 100 != 0 || y % 400 == 0; +} + +/*! + \internal + Converts a Gregorian date to a Julian day. + This algorithm is taken from Communications of the ACM, Vol 6, No 8. + \sa julianToGregorian() +*/ + +uint QDate::gregorianToJulian( int y, int m, int d ) +{ + uint c, ya; + if ( y <= 99 ) + y += 1900; + if ( m > 2 ) { + m -= 3; + } else { + m += 9; + y--; + } + c = y; // NOTE: Sym C++ 6.0 bug + c /= 100; + ya = y - 100*c; + return 1721119 + d + (146097*c)/4 + (1461*ya)/4 + (153*m+2)/5; +} + +/*! + \internal + Converts a Julian day to a Gregorian date. + This algorithm is taken from Communications of the ACM, Vol 6, No 8. + \sa gregorianToJulian() +*/ + +void QDate::julianToGregorian( uint jd, int &y, int &m, int &d ) +{ + uint x; + uint j = jd - 1721119; + y = (j*4 - 1)/146097; + j = j*4 - 146097*y - 1; + x = j/4; + j = (x*4 + 3) / 1461; + y = 100*y + j; + x = (x*4) + 3 - 1461*j; + x = (x + 4)/4; + m = (5*x - 3)/153; + x = 5*x - 3 - 153*m; + d = (x + 5)/5; + if ( m < 10 ) { + m += 3; + } else { + m -= 9; + y++; + } +} + + +/***************************************************************************** + QTime member functions + *****************************************************************************/ + +/*! + \class QTime qdatetime.h + \reentrant + + \brief The QTime class provides clock time functions. + + \ingroup time + \mainclass + + 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 (milli)seconds. + + QTime uses the 24-hour clock format; it has no concept of AM/PM. + It operates in local time; it knows nothing about time zones or + daylight savings time. + + 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 clock 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 (milli)seconds between + two times can be found using the secsTo() or msecsTo() functions. + + 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 the time 0 hours, minutes, seconds and milliseconds, + i.e. 00:00:00.000 (midnight). This is a valid time. + + \sa 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..23, \a m and \a s must be in the + range 0..59, and \a ms must be in the range 0..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 equal to 00:00:00.000; otherwise + returns FALSE. A null time is valid. + + \sa isValid() +*/ + +/*! + Returns TRUE if the time is valid; otherwise returns FALSE. The + time 23:30:55.746 is valid, whereas 24:12:30 is invalid. + + \sa isNull() +*/ + +bool QTime::isValid() const +{ + return ds < MSECS_PER_DAY; +} + + +/*! + Returns the hour part (0..23) of the time. +*/ + +int QTime::hour() const +{ + return ds / MSECS_PER_HOUR; +} + +/*! + Returns the minute part (0..59) of the time. +*/ + +int QTime::minute() const +{ + return (ds % MSECS_PER_HOUR)/MSECS_PER_MIN; +} + +/*! + Returns the second part (0..59) of the time. +*/ + +int QTime::second() const +{ + return (ds / 1000)%SECS_PER_MIN; +} + +/*! + Returns the millisecond part (0..999) of the time. +*/ + +int QTime::msec() const +{ + return ds % 1000; +} + +#ifndef QT_NO_DATESTRING +#ifndef QT_NO_SPRINTF +/*! + \overload + + Returns the time as a string. Milliseconds are not included. The + \a f parameter determines the format of the string. + + If \a f is \c Qt::TextDate, the string format is HH:MM:SS; e.g. 1 + second before midnight would be "23:59:59". + + If \a f is \c Qt::ISODate, the string format corresponds to the + ISO 8601 extended specification for representations of dates, + which is also HH:MM:SS. + + If \a f is Qt::LocalDate, the string format depends on the locale + settings of the system. +*/ + +QString QTime::toString( Qt::DateFormat f ) const +{ + switch ( f ) { + case Qt::LocalDate: + { +#ifndef Q_WS_WIN + tm tt; + memset( &tt, 0, sizeof( tm ) ); + char buf[255]; + tt.tm_sec = second(); + tt.tm_min = minute(); + tt.tm_hour = hour(); + if ( strftime( buf, sizeof(buf), "%X", &tt ) ) + return QString::fromLocal8Bit( buf ); +#else + SYSTEMTIME st; + memset( &st, 0, sizeof(SYSTEMTIME) ); + st.wHour = hour(); + st.wMinute = minute(); + st.wSecond = second(); + st.wMilliseconds = 0; + QT_WA( { + TCHAR buf[255]; + if ( GetTimeFormat( LOCALE_USER_DEFAULT, 0, &st, 0, buf, 255 ) ) + return QString::fromUcs2( (ushort*)buf ); + } , { + char buf[255]; + if ( GetTimeFormatA( LOCALE_USER_DEFAULT, 0, &st, 0, (char*)&buf, 255 ) ) + return QString::fromLocal8Bit( buf ); + } ); +#endif + return QString::null; + } + default: + case Qt::ISODate: + case Qt::TextDate: + QString buf; + buf.sprintf( "%.2d:%.2d:%.2d", hour(), minute(), second() ); + return buf; + } +} +#endif + +/*! + 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..23 or 1..12 if AM/PM display) + \row \i hh + \i the hour with a leading zero (00..23 or 01..12 if AM/PM display) + \row \i m \i the minute without a leading zero (0..59) + \row \i mm \i the minute with a leading zero (00..59) + \row \i s \i the second whithout a leading zero (0..59) + \row \i ss \i the second whith a leading zero (00..59) + \row \i z \i the milliseconds without leading zeroes (0..999) + \row \i zzz \i the milliseconds with leading zeroes (000..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. + + Example format strings (assuming that the QTime is 14:13:09.042) + + \table + \header \i Format \i Result + \row \i hh:mm:ss.zzz \i11 14:13:09.042 + \row \i h:m:s ap \i11 2:13:9 pm + \endtable + + \sa QDate::toString() QTime::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..23, \a m and \a s must be in the + range 0..59, and \a ms must be in the range 0..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 ( !isValid(h,m,s,ms) ) { +#if defined(QT_CHECK_RANGE) + qWarning( "QTime::setHMS Invalid time %02d:%02d:%02d.%03d", h, m, s, + ms ); +#endif + ds = MSECS_PER_DAY; // make this invalid + return FALSE; + } + ds = (h*SECS_PER_HOUR + m*SECS_PER_MIN + s)*1000 + ms; + return TRUE; +} + +/*! + Returns a QTime object containing a time \a nsecs seconds later + than the time of this object (or earlier if \a nsecs is negative). + + Note that the time will wrap if it passes midnight. + + Example: + \code + QTime n( 14, 0, 0 ); // n == 14:00:00 + QTime t; + t = n.addSecs( 70 ); // t == 14:01:10 + t = n.addSecs( -70 ); // t == 13:58:50 + t = n.addSecs( 10*60*60 + 5 ); // t == 00:00:05 + t = n.addSecs( -15*60*60 ); // t == 23:00:00 + \endcode + + \sa addMSecs(), secsTo(), QDateTime::addSecs() +*/ + +QTime QTime::addSecs( int nsecs ) const +{ + return addMSecs( nsecs * 1000 ); +} + +/*! + Returns the number of seconds from this time to \a t (which is + negative if \a t is earlier than this time). + + Because QTime measures time within a day and there are 86400 + seconds in a day, the result is always between -86400 and 86400. + + \sa addSecs() QDateTime::secsTo() +*/ + +int QTime::secsTo( const QTime &t ) const +{ + return ((int)t.ds - (int)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.ds = ((int)ds + ms + negdays*MSECS_PER_DAY) + % MSECS_PER_DAY; + } else { + t.ds = ((int)ds + ms) % MSECS_PER_DAY; + } + return t; +} + +/*! + Returns the number of milliseconds from this time to \a t (which + is negative if \a t is earlier than this time). + + Because QTime measures time within a day and there are 86400 + seconds in a day, the result is always between -86400 and 86400s. + + \sa secsTo() +*/ + +int QTime::msecsTo( const QTime &t ) const +{ + return (int)t.ds - (int)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() +{ + return currentTime( Qt::LocalTime ); +} + +/*! + Returns the current time as reported by the system clock, for the + TimeSpec \a ts. The default TimeSpec is LocalTime. + + Note that the accuracy depends on the accuracy of the underlying + operating system; not all systems provide 1-millisecond accuracy. + + \sa Qt::TimeSpec +*/ +QTime QTime::currentTime( Qt::TimeSpec ts ) +{ + QTime t; + currentTime( &t, ts ); + return t; +} + +#ifndef QT_NO_DATESTRING +/*! + Returns the representation \a s as a QTime using the format \a f, + or an invalid time if this is not possible. + + \warning Note that \c Qt::LocalDate cannot be used here. +*/ +QTime QTime::fromString( const QString& s, Qt::DateFormat f ) +{ + if ( ( s.isEmpty() ) || ( f == Qt::LocalDate ) ) { +#if defined(QT_CHECK_RANGE) + qWarning( "QTime::fromString: Parameter out of range." ); +#endif + return QTime(); + } + + int hour( s.mid( 0, 2 ).toInt() ); + int minute( s.mid( 3, 2 ).toInt() ); + int second( s.mid( 6, 2 ).toInt() ); + int msec( s.mid( 9, 3 ).toInt() ); + return QTime( hour, minute, second, msec ); +} +#endif + +/*! + \internal + \obsolete + + Fetches the current time and returns TRUE if the time is within one + minute after midnight, otherwise FALSE. The return value is used by + QDateTime::currentDateTime() to ensure that the date there is correct. +*/ + +bool QTime::currentTime( QTime *ct ) +{ + return currentTime( ct, Qt::LocalTime ); +} + + +/*! + \internal + + Fetches the current time, for the TimeSpec \a ts, and returns TRUE + if the time is within one minute after midnight, otherwise FALSE. The + return value is used by QDateTime::currentDateTime() to ensure that + the date there is correct. The default TimeSpec is LocalTime. + + \sa Qt::TimeSpec +*/ +bool QTime::currentTime( QTime *ct, Qt::TimeSpec ts ) +{ + if ( !ct ) { +#if defined(QT_CHECK_NULL) + qWarning( "QTime::currentTime(QTime *): Null pointer not allowed" ); +#endif + return FALSE; + } + +#if defined(Q_OS_WIN32) + SYSTEMTIME t; + if ( ts == Qt::LocalTime ) { + GetLocalTime( &t ); + } else { + GetSystemTime( &t ); + } + ct->ds = (uint)( MSECS_PER_HOUR*t.wHour + MSECS_PER_MIN*t.wMinute + + 1000*t.wSecond + t.wMilliseconds ); +#elif defined(Q_OS_UNIX) + struct timeval tv; + gettimeofday( &tv, 0 ); + time_t ltime = tv.tv_sec; + tm *t; + if ( ts == Qt::LocalTime ) { + t = localtime( <ime ); + } else { + t = gmtime( <ime ); + } + ct->ds = (uint)( 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; + if ( ts == Qt::LocalTime ) + localtime( <ime ); + else + gmtime( <ime ); + ct->ds = (uint) ( MSECS_PER_HOUR * t->tm_hour + MSECS_PER_MIN * t->tm_min + + 1000 * t->tm_sec ); +#endif + // 00:00.00 to 00:00.59.999 is considered as "midnight or right after" + return ct->ds < (uint) MSECS_PER_MIN; +} + +/*! + \overload + + Returns TRUE if the specified time is valid; otherwise returns + FALSE. + + The time is valid if \a h is in the range 0..23, \a m and \a s are + in the range 0..59, and \a ms is in the range 0..999. + + Example: + \code + QTime::isValid(21, 10, 30); // returns TRUE + QTime::isValid(22, 5, 62); // returns FALSE + \endcode +*/ + +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: + + \code + QTime t; + t.start(); // start clock + ... // some lengthy task + qDebug( "%d\n", t.elapsed() ); // prints the number of msecs elapsed + \endcode + + \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 then 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 qdatetime.h + \reentrant + \brief The QDateTime class provides date and time functions. + + \ingroup time + \mainclass + + 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(), which 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, which 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 + which is 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. + + The range of a datetime object is constrained to the ranges of the + QDate and QTime objects which it embodies. + + \sa QDate QTime QDateTimeEdit +*/ + + +/*! + \fn QDateTime::QDateTime() + + Constructs a null datetime (i.e. null date and null time). A null + datetime is invalid, since the date is invalid. + + \sa isValid() +*/ + + +/*! + Constructs a datetime with date \a date and null (but valid) time + (00:00:00.000). +*/ + +QDateTime::QDateTime( const QDate &date ) + : d(date) +{ +} + +/*! + Constructs a datetime with date \a date and time \a time. +*/ + +QDateTime::QDateTime( const QDate &date, const QTime &time ) + : d(date), t(time) +{ +} + + +/*! + \fn bool QDateTime::isNull() const + + Returns TRUE if both the date and the time are null; otherwise + returns FALSE. A null datetime is invalid. + + \sa QDate::isNull(), QTime::isNull() +*/ + +/*! + \fn bool QDateTime::isValid() const + + Returns TRUE if both the date and the time are valid; otherwise + returns FALSE. + + \sa QDate::isValid(), QTime::isValid() +*/ + +/*! + \fn QDate QDateTime::date() const + + Returns the date part of the datetime. + + \sa setDate(), time() +*/ + +/*! + \fn QTime QDateTime::time() const + + Returns the time part of the datetime. + + \sa setTime(), date() +*/ + +/*! + \fn void QDateTime::setDate( const QDate &date ) + + Sets the date part of this datetime to \a date. + + \sa date(), setTime() +*/ + +/*! + \fn void QDateTime::setTime( const QTime &time ) + + Sets the time part of this datetime to \a time. + + \sa time(), setDate() +*/ + + +/*! + Returns the datetime as the number of seconds that have passed + since 1970-01-01T00:00:00, Coordinated Universal Time (UTC). + + On systems that do not support timezones, this function will + behave as if local time were UTC. + + \sa setTime_t() +*/ + +uint QDateTime::toTime_t() const +{ + tm brokenDown; + brokenDown.tm_sec = t.second(); + brokenDown.tm_min = t.minute(); + brokenDown.tm_hour = t.hour(); + brokenDown.tm_mday = d.day(); + brokenDown.tm_mon = d.month() - 1; + brokenDown.tm_year = d.year() - 1900; + brokenDown.tm_isdst = -1; + int secsSince1Jan1970UTC = (int) mktime( &brokenDown ); + if ( secsSince1Jan1970UTC < -1 ) + secsSince1Jan1970UTC = -1; + return (uint) secsSince1Jan1970UTC; +} + +/*! + \overload + + Convenience function that sets the date and time to local time + based on the given UTC time. +*/ + +void QDateTime::setTime_t( uint secsSince1Jan1970UTC ) +{ + setTime_t( secsSince1Jan1970UTC, Qt::LocalTime ); +} + +/*! + Sets the date and time to \a ts time (\c Qt::LocalTime or \c + Qt::UTC) given the number of seconds that have passed since + 1970-01-01T00:00:00, Coordinated Universal Time (UTC). On systems + that do not support timezones this function will behave as if + local time were UTC. + + On Windows, only a subset of \a secsSince1Jan1970UTC values are + supported, as Windows starts counting from 1980. + + \sa toTime_t() +*/ +void QDateTime::setTime_t( uint secsSince1Jan1970UTC, Qt::TimeSpec ts ) +{ + time_t tmp = (time_t) secsSince1Jan1970UTC; + tm *brokenDown = 0; + if ( ts == Qt::LocalTime ) + brokenDown = localtime( &tmp ); + if ( !brokenDown ) { + brokenDown = gmtime( &tmp ); + if ( !brokenDown ) { + d.jd = QDate::gregorianToJulian( 1970, 1, 1 ); + t.ds = 0; + return; + } + } + d.jd = QDate::gregorianToJulian( brokenDown->tm_year + 1900, + brokenDown->tm_mon + 1, + brokenDown->tm_mday ); + t.ds = MSECS_PER_HOUR * brokenDown->tm_hour + + MSECS_PER_MIN * brokenDown->tm_min + + 1000 * brokenDown->tm_sec; +} +#ifndef QT_NO_DATESTRING +#ifndef QT_NO_SPRINTF +/*! + \overload + + Returns the datetime as a string. The \a f parameter determines + the format of the string. + + If \a f is \c Qt::TextDate, the string format is "Wed May 20 + 03:40:13 1998" (using QDate::shortDayName(), QDate::shortMonthName(), + and QTime::toString() to generate the string, so the day and month + names will have localized names). + + If \a f is \c Qt::ISODate, the string format corresponds to the + ISO 8601 extended specification for representations of dates and + times, which is YYYY-MM-DDTHH:MM:SS. + + If \a f is \c Qt::LocalDate, the string format depends on the + locale settings of the system. + + If the format \a f is invalid, toString() returns a null string. + + \sa QDate::toString() QTime::toString() +*/ + +QString QDateTime::toString( Qt::DateFormat f ) const +{ + if ( f == Qt::ISODate ) { + return d.toString( Qt::ISODate ) + "T" + t.toString( Qt::ISODate ); + } +#ifndef QT_NO_TEXTDATE + else if ( f == Qt::TextDate ) { +#ifndef Q_WS_WIN + QString buf = d.shortDayName( d.dayOfWeek() ); + buf += ' '; + buf += d.shortMonthName( d.month() ); + buf += ' '; + buf += QString().setNum( d.day() ); + buf += ' '; +#else + QString buf; + QString winstr; + QT_WA( { + TCHAR out[255]; + GetLocaleInfo( LOCALE_USER_DEFAULT, LOCALE_ILDATE, out, 255 ); + winstr = QString::fromUcs2( (ushort*)out ); + } , { + char out[255]; + GetLocaleInfoA( LOCALE_USER_DEFAULT, LOCALE_ILDATE, (char*)&out, 255 ); + winstr = QString::fromLocal8Bit( out ); + } ); + switch ( winstr.toInt() ) { + case 1: + buf = d.shortDayName( d.dayOfWeek() ) + " " + QString().setNum( d.day() ) + ". " + d.shortMonthName( d.month() ) + " "; + break; + default: + buf = d.shortDayName( d.dayOfWeek() ) + " " + d.shortMonthName( d.month() ) + " " + QString().setNum( d.day() ) + " "; + break; + } +#endif + buf += t.toString(); + buf += ' '; + buf += QString().setNum( d.year() ); + return buf; + } +#endif + else if ( f == Qt::LocalDate ) { + return d.toString( Qt::LocalDate ) + " " + t.toString( Qt::LocalDate ); + } + return QString::null; +} +#endif + +/*! + 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 (1-31) + \row \i dd \i the day as number with a leading zero (01-31) + \row \i ddd + \i the abbreviated localized day name (e.g. 'Mon'..'Sun'). + Uses QDate::shortDayName(). + \row \i dddd + \i the long localized day name (e.g. 'Monday'..'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'..'Dec'). + Uses QDate::shortMonthName(). + \row \i MMMM + \i the long localized month name (e.g. 'January'..'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 (1752-8000) + \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..23 or 1..12 if AM/PM display) + \row \i hh + \i the hour with a leading zero (00..23 or 01..12 if AM/PM display) + \row \i m \i the minute without a leading zero (0..59) + \row \i mm \i the minute with a leading zero (00..59) + \row \i s \i the second whithout a leading zero (0..59) + \row \i ss \i the second whith a leading zero (00..59) + \row \i z \i the milliseconds without leading zeroes (0..999) + \row \i zzz \i the milliseconds with leading zeroes (000..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. + + Example format strings (assumed that the QDateTime is + 21<small><sup>st</sup></small> May 2001 14:13:09) + + \table + \header \i Format \i Result + \row \i dd.MM.yyyy \i11 21.05.2001 + \row \i ddd MMMM d yy \i11 Tue May 21 01 + \row \i hh:mm:ss.zzz \i11 14:13:09.042 + \row \i h:m:s ap \i11 2:13:9 pm + \endtable + + \sa QDate::toString() QTime::toString() +*/ +QString QDateTime::toString( const QString& format ) const +{ + return fmtDateTime( format, &t, &d ); +} +#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.addDays(ndays), t ); +} + +/*! + 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.addMonths(nmonths), t ); +} + +/*! + 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.addYears(nyears), t ); +} + +/*! + Returns a QDateTime object containing a datetime \a nsecs seconds + later than the datetime of this object (or earlier if \a nsecs is + negative). + + \sa secsTo(), addDays(), addMonths(), addYears() +*/ + +QDateTime QDateTime::addSecs( int nsecs ) const +{ + uint dd = d.jd; + int tt = t.ds; + int sign = 1; + if ( nsecs < 0 ) { + nsecs = -nsecs; + sign = -1; + } + if ( nsecs >= (int)SECS_PER_DAY ) { + dd += sign*(nsecs/SECS_PER_DAY); + nsecs %= SECS_PER_DAY; + } + tt += sign*nsecs*1000; + 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; + } + QDateTime ret; + ret.t.ds = tt; + ret.d.jd = dd; + return ret; +} + +/*! + Returns the number of days from this datetime to \a dt (which is + negative if \a dt is earlier than this datetime). + + \sa addDays(), secsTo() +*/ + +int QDateTime::daysTo( const QDateTime &dt ) const +{ + return d.daysTo( dt.d ); +} + +/*! + Returns the number of seconds from this datetime to \a dt (which + is negative if \a dt is earlier than this datetime). + + Example: + \code + QDateTime dt = QDateTime::currentDateTime(); + QDateTime xmas( QDate(dt.year(),12,24), QTime(17,00) ); + qDebug( "There are %d seconds to Christmas", dt.secsTo(xmas) ); + \endcode + + \sa addSecs(), daysTo(), QTime::secsTo() +*/ + +int QDateTime::secsTo( const QDateTime &dt ) const +{ + return t.secsTo(dt.t) + d.daysTo(dt.d)*SECS_PER_DAY; +} + + +/*! + Returns TRUE if this datetime is equal to \a dt; otherwise returns FALSE. + + \sa operator!=() +*/ + +bool QDateTime::operator==( const QDateTime &dt ) const +{ + return t == dt.t && d == dt.d; +} + +/*! + Returns TRUE if this datetime is different from \a dt; otherwise + returns FALSE. + + \sa operator==() +*/ + +bool QDateTime::operator!=( const QDateTime &dt ) const +{ + return t != dt.t || d != dt.d; +} + +/*! + Returns TRUE if this datetime is earlier than \a dt; otherwise + returns FALSE. +*/ + +bool QDateTime::operator<( const QDateTime &dt ) const +{ + if ( d < dt.d ) + return TRUE; + return d == dt.d ? t < dt.t : FALSE; +} + +/*! + Returns TRUE if this datetime is earlier than or equal to \a dt; + otherwise returns FALSE. +*/ + +bool QDateTime::operator<=( const QDateTime &dt ) const +{ + if ( d < dt.d ) + return TRUE; + return d == dt.d ? t <= dt.t : FALSE; +} + +/*! + Returns TRUE if this datetime is later than \a dt; otherwise + returns FALSE. +*/ + +bool QDateTime::operator>( const QDateTime &dt ) const +{ + if ( d > dt.d ) + return TRUE; + return d == dt.d ? t > dt.t : FALSE; +} + +/*! + Returns TRUE if this datetime is later than or equal to \a dt; + otherwise returns FALSE. +*/ + +bool QDateTime::operator>=( const QDateTime &dt ) const +{ + if ( d > dt.d ) + return TRUE; + return d == dt.d ? t >= dt.t : FALSE; +} + +/*! + \overload + + Returns the current datetime, as reported by the system clock. + + \sa QDate::currentDate(), QTime::currentTime() +*/ + +QDateTime QDateTime::currentDateTime() +{ + return currentDateTime( Qt::LocalTime ); +} + +/*! + Returns the current datetime, as reported by the system clock, for the + TimeSpec \a ts. The default TimeSpec is LocalTime. + + \sa QDate::currentDate(), QTime::currentTime(), Qt::TimeSpec +*/ + +QDateTime QDateTime::currentDateTime( Qt::TimeSpec ts ) +{ + QDateTime dt; + QTime t; + dt.setDate( QDate::currentDate(ts) ); + if ( QTime::currentTime(&t, ts) ) // midnight or right after? + dt.setDate( QDate::currentDate(ts) ); // fetch date again + dt.setTime( t ); + return dt; +} + +#ifndef QT_NO_DATESTRING +/*! + Returns the QDateTime represented by the string \a s, using the + format \a f, or an invalid datetime if this is not possible. + + Note for \c 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. + + \warning Note that \c Qt::LocalDate cannot be used here. +*/ +QDateTime QDateTime::fromString( const QString& s, Qt::DateFormat f ) +{ + if ( ( s.isEmpty() ) || ( f == Qt::LocalDate ) ) { +#if defined(QT_CHECK_RANGE) + qWarning( "QDateTime::fromString: Parameter out of range" ); +#endif + return QDateTime(); + } + if ( f == Qt::ISODate ) { + return QDateTime( QDate::fromString( s.mid(0,10), Qt::ISODate ), + QTime::fromString( s.mid(11), Qt::ISODate ) ); + } +#if !defined(QT_NO_REGEXP) && !defined(QT_NO_TEXTDATE) + else if ( f == Qt::TextDate ) { + QString monthName( s.mid( 4, 3 ) ); + int month = -1; + // Assume that English monthnames are the default + for ( int i = 0; i < 12; ++i ) { + if ( monthName == 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 defined(QT_CHECK_RANGE) + if ( month < 1 || month > 12 ) { + qWarning( "QDateTime::fromString: Parameter out of range." ); + month = 1; + } +#endif + int day = s.mid( 8, 2 ).simplifyWhiteSpace().toInt(); + int year = s.right( 4 ).toInt(); + QDate date( year, month, day ); + QTime time; + int hour, minute, second; + int pivot = s.find( QRegExp("[0-9][0-9]:[0-9][0-9]:[0-9][0-9]") ); + if ( pivot != -1 ) { + hour = s.mid( pivot, 2 ).toInt(); + minute = s.mid( pivot+3, 2 ).toInt(); + second = s.mid( pivot+6, 2 ).toInt(); + time.setHMS( hour, minute, second ); + } + return QDateTime( date, time ); + } +#endif //QT_NO_REGEXP + return QDateTime(); +} +#endif //QT_NO_DATESTRING + + +/***************************************************************************** + Date/time stream functions + *****************************************************************************/ + +#ifndef QT_NO_DATASTREAM +/*! + \relates QDate + + Writes the date, \a d, to the data stream, \a s. + + \sa \link datastreamformat.html Format of the QDataStream operators \endlink +*/ + +QDataStream &operator<<( QDataStream &s, const QDate &d ) +{ + return s << (Q_UINT32)(d.jd); +} + +/*! + \relates QDate + + Reads a date from the stream \a s into \a d. + + \sa \link datastreamformat.html Format of the QDataStream operators \endlink +*/ + +QDataStream &operator>>( QDataStream &s, QDate &d ) +{ + Q_UINT32 jd; + s >> jd; + d.jd = jd; + return s; +} + +/*! + \relates QTime + + Writes time \a t to the stream \a s. + + \sa \link datastreamformat.html Format of the QDataStream operators \endlink +*/ + +QDataStream &operator<<( QDataStream &s, const QTime &t ) +{ + return s << (Q_UINT32)(t.ds); +} + +/*! + \relates QTime + + Reads a time from the stream \a s into \a t. + + \sa \link datastreamformat.html Format of the QDataStream operators \endlink +*/ + +QDataStream &operator>>( QDataStream &s, QTime &t ) +{ + Q_UINT32 ds; + s >> ds; + t.ds = ds; + return s; +} + +/*! + \relates QDateTime + + Writes the datetime \a dt to the stream \a s. + + \sa \link datastreamformat.html Format of the QDataStream operators \endlink +*/ + +QDataStream &operator<<( QDataStream &s, const QDateTime &dt ) +{ + return s << dt.d << dt.t; +} + +/*! + \relates QDateTime + + Reads a datetime from the stream \a s into \a dt. + + \sa \link datastreamformat.html Format of the QDataStream operators \endlink +*/ + +QDataStream &operator>>( QDataStream &s, QDateTime &dt ) +{ + s >> dt.d >> dt.t; + return s; +} +#endif //QT_NO_DATASTREAM |