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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef Patternist_AbstractDateTime_H
#define Patternist_AbstractDateTime_H
#include <QDateTime>
#include <QRegExp>
#include "qitem_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Base class for classes implementing values related to time, date or both.
*
* @see <a href="http://www.w3.org/TR/xmlschema-2/#dateTime">XML Schema
* Part 2: Datatypes Second Edition, 3.2.7 dateTime</a>
* @see <a href="http://www.w3.org/TR/xpath-datamodel/#dates-and-times">XQuery
* 1.0 and XPath 2.0 Data Model (XDM), 3.3.2 Dates and Times</a>
* @see <a href="http://www.cl.cam.ac.uk/~mgk25/iso-time.html">A summary of
* the international standard date and time notation, Markus Kuhn</a>
* @see <a href="http://en.wikipedia.org/wiki/Iso_date">ISO 8601,
* From Wikipedia, the free encyclopedia</a>
* @author Frans Englich <fenglich@trolltech.com>
* @ingroup Patternist_xdm
*/
class AbstractDateTime : public AtomicValue
{
public:
typedef QExplicitlySharedDataPointer<AbstractDateTime> Ptr;
AbstractDateTime(const QDateTime &dateTime);
enum
{
DefaultYear = 2000,
DefaultMonth = 1,
DefaultDay = 1
};
/**
* @returns the date time this class represents, as a QDateTime.
*/
inline const QDateTime &toDateTime() const
{
return m_dateTime;
}
/**
* @short Acts as a mapping table for AbstractDateTime::create()
* and describes where certain fields in a QRegExp pattern can be found
* for a particular W3C XML Schema date/time type.
*
* @author Frans Englich <fenglich@trolltech.com>
* @ingroup Patternist_xdm
*/
class CaptureTable
{
public:
CaptureTable(const QRegExp &exp,
const qint8 zoneOffsetSignP,
const qint8 zoneOffsetHourP,
const qint8 zoneOffsetMinuteP,
const qint8 zoneOffsetUTCSymbolP,
const qint8 yearP,
const qint8 monthP = -1,
const qint8 dayP = -1,
const qint8 hourP = -1,
const qint8 minutesP = -1,
const qint8 secondsP = -1,
const qint8 msecondsP = -1,
const qint8 yearSignP = -1) : regExp(exp)
, zoneOffsetSign(zoneOffsetSignP)
, zoneOffsetHour(zoneOffsetHourP)
, zoneOffsetMinute(zoneOffsetMinuteP)
, zoneOffsetUTCSymbol(zoneOffsetUTCSymbolP)
, year(yearP)
, month(monthP)
, day(dayP)
, hour(hourP)
, minutes(minutesP)
, seconds(secondsP)
, mseconds(msecondsP)
, yearSign(yearSignP)
{
Q_ASSERT(exp.isValid());
}
const QRegExp regExp;
const qint8 zoneOffsetSign;
const qint8 zoneOffsetHour;
const qint8 zoneOffsetMinute;
const qint8 zoneOffsetUTCSymbol;
const qint8 year;
const qint8 month;
const qint8 day;
const qint8 hour;
const qint8 minutes;
const qint8 seconds;
const qint8 mseconds;
const qint8 yearSign;
private:
Q_DISABLE_COPY(CaptureTable)
};
/**
* @returns m_dateTime's time part converted to string. This is for
* example "12" or "01.023".
*/
QString timeToString() const;
/**
* @returns m_dateTime's date part converted to string. This is for
* example "2004-05-12" or "-2004-05-12".
*/
QString dateToString() const;
/**
* Serializes the milli seconds @p msecs into a string representation. For
* example, if @p msecs is 1, ".001" is returned; if @p msecs is 100 then
* is ".1" returned.
*/
static QString serializeMSeconds(const MSecondProperty msecs);
/**
* A factory function for creating instances that are of the dynamic
* type of this class, that represents @p dt.
*
* The default implementation performs an assert() call. This function
* is not pure virtual because all sub-classes do not use it.
*/
virtual Item fromValue(const QDateTime &dt) const;
/**
* Determines whether @p dt is a date-time that can be represented,
* and isn't too early or too late. If it is valid, @c true is returned. Otherwise,
* @c false is returned and @p message is set to contain a translated message for
* human consumption, describing the error.
*/
static bool isRangeValid(const QDate &date,
QString &message);
protected:
/**
* @returns m_dateTime' zone offset converted to string, as per the
* the W3C XML Schema types. This is for
* example "Z" or "+12.00"(depending on m_dateTime).
*/
QString zoneOffsetToString() const;
static QDateTime create(AtomicValue::Ptr &errorMessage,
const QString &lexicalSource,
const CaptureTable &captTable);
/**
* @short Makes the QDateTime::timeSpec() and QDateTime::zoneOffset()
* of @p ot * consistent to @p from.
*/
static void copyTimeSpec(const QDateTime &from,
QDateTime &to);
const QDateTime m_dateTime;
private:
enum ZoneOffsetParseResult
{
/**
* syntax or logical error was encountered.
*/
Error,
/**
* It's a valid offset from UTC.
*/
Offset,
/**
* No zone offset was specified, it's an implementation defined zone offset.
*/
LocalTime,
UTC
};
/**
* @short Parses the zone offset. All types use zone offsets.
*
* If result is set to Offset, the offset is returned, otherwise
* the return value is undefined.
*
* The offset is in seconds.
*/
static ZOTotal parseZoneOffset(ZoneOffsetParseResult &result,
const QStringList &capts,
const CaptureTable &captTable);
static inline void setUtcOffset(QDateTime &result,
const ZoneOffsetParseResult zoResult,
const int zoOffset);
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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