| -rw-r--r-- | qmake/tools/qdatetime.cpp | 70 |
1 files changed, 58 insertions, 12 deletions
diff --git a/qmake/tools/qdatetime.cpp b/qmake/tools/qdatetime.cpp index 93e40a8..3137877 100644 --- a/qmake/tools/qdatetime.cpp +++ b/qmake/tools/qdatetime.cpp @@ -1,2490 +1,2536 @@ /**************************************************************************** ** $Id$ ** ** Implementation of date and time classes ** ** Created : 940124 ** -** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. +** Copyright (C) 1992-2002 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 tmp(y,m,1); + + if( d > tmp.daysInMonth() ) + d = tmp.daysInMonth(); + 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 + // posix compliant system time_t ltime; time( <ime ); tm *t; + +# if defined(QT_THREAD_SUPPORT) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) + // use the reentrant versions of localtime() and gmtime() where available + tm res; + if ( ts == Qt::LocalTime ) + t = localtime_r( <ime, &res ); + else + t = gmtime_r( <ime, &res ); +# else if ( ts == Qt::LocalTime ) t = localtime( <ime ); - else + else t = gmtime( <ime ); +# endif // QT_THREAD_SUPPORT && _POSIX_THREAD_SAFE_FUNCTIONS + 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) + // posix compliant system struct timeval tv; gettimeofday( &tv, 0 ); time_t ltime = tv.tv_sec; tm *t; - if ( ts == Qt::LocalTime ) { + +# if defined(QT_THREAD_SUPPORT) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) + // use the reentrant versions of localtime() and gmtime() where available + tm res; + if ( ts == Qt::LocalTime ) + t = localtime_r( <ime, &res ); + else + t = gmtime_r( <ime, &res ); +# else + if ( ts == Qt::LocalTime ) t = localtime( <ime ); - } else { + else t = gmtime( <ime ); - } +# endif // QT_THREAD_SUPPORT && _POSIX_THREAD_SAFE_FUNCTIONS + 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 ) + 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 + t.start(); + some_lengthy_task(); + qDebug( "Time elapsed: %d ms", t.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 defined(Q_OS_UNIX) && defined(QT_THREAD_SUPPORT) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) + // posix compliant system + // use the reentrant versions of localtime() and gmtime() where available + tm res; + if ( ts == Qt::LocalTime ) + brokenDown = localtime_r( &tmp, &res ); + if ( !brokenDown ) { + brokenDown = gmtime_r( &tmp, &res ); + if ( !brokenDown ) { + d.jd = QDate::gregorianToJulian( 1970, 1, 1 ); + t.ds = 0; + return; + } + } +#else 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; } } +#endif + 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 |