diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/functions/qtimezonefns.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/functions/qtimezonefns.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,166 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qabstractdatetime_p.h"
+#include "qcontextfns_p.h"
+#include "qdate_p.h"
+#include "qschemadatetime_p.h"
+#include "qdaytimeduration_p.h"
+#include "qpatternistlocale_p.h"
+#include "qschematime_p.h"
+
+#include "qtimezonefns_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+Item AdjustTimezone::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    enum
+    {
+        /**
+         * The maximum zone offset, @c PT14H, in milli seconds.
+         */
+        MSecLimit = 14 * 60/*M*/ * 60/*S*/ * 1000/*ms*/
+    };
+
+
+    const Item arg(m_operands.first()->evaluateSingleton(context));
+    if(!arg)
+        return Item();
+
+    QDateTime dt(arg.as<AbstractDateTime>()->toDateTime());
+    // TODO DT dt.setDateOnly(false);
+    Q_ASSERT(dt.isValid());
+    DayTimeDuration::Ptr tz;
+
+    if(m_operands.count() == 2)
+        tz = DayTimeDuration::Ptr(m_operands.at(1)->evaluateSingleton(context).as<DayTimeDuration>());
+    else
+        tz = context->implicitTimezone();
+
+    if(tz)
+    {
+        const MSecondCountProperty tzMSecs = tz->value();
+
+        if(tzMSecs % (1000 * 60) != 0)
+        {
+            context->error(QtXmlPatterns::tr("A zone offset must be in the "
+                                             "range %1..%2 inclusive. %3 is "
+                                             "out of range.")
+                           .arg(formatData("-PT14H"))
+                           .arg(formatData("PT14H"))
+                           .arg(formatData(tz->stringValue())),
+                           ReportContext::FODT0003, this);
+            return Item();
+        }
+        else if(tzMSecs > MSecLimit ||
+                tzMSecs < -MSecLimit)
+        {
+            context->error(QtXmlPatterns::tr("%1 is not a whole number of minutes.")
+                                            .arg(formatData(tz->stringValue())),
+                                       ReportContext::FODT0003, this);
+            return Item();
+        }
+
+        const SecondCountProperty tzSecs = tzMSecs / 1000;
+
+        if(dt.timeSpec() == Qt::LocalTime) /* $arg has no time zone. */
+        {
+            /* "If $arg does not have a timezone component and $timezone is not
+             * the empty sequence, then the result is $arg with $timezone as
+             * the timezone component." */
+            //dt.setTimeSpec(QDateTime::Spec(QDateTime::OffsetFromUTC, tzSecs));
+            dt.setUtcOffset(tzSecs);
+            Q_ASSERT(dt.isValid());
+            return createValue(dt);
+        }
+        else
+        {
+            /* "If $arg has a timezone component and $timezone is not the empty sequence,
+             * then the result is an xs:dateTime value with a timezone component of
+             * $timezone that is equal to $arg." */
+            dt = dt.toUTC();
+            dt = dt.addSecs(tzSecs);
+            //dt.setTimeSpec(QDateTime::Spec(QDateTime::OffsetFromUTC, tzSecs));
+            dt.setUtcOffset(tzSecs);
+            Q_ASSERT(dt.isValid());
+            return createValue(dt);
+        }
+    }
+    else
+    { /* $timezone is the empty sequence. */
+        if(dt.timeSpec() == Qt::LocalTime) /* $arg has no time zone. */
+        {
+            /* "If $arg does not have a timezone component and $timezone is
+             * the empty sequence, then the result is $arg." */
+            return arg;
+        }
+        else
+        {
+            /* "If $arg has a timezone component and $timezone is the empty sequence,
+             * then the result is the localized value of $arg without its timezone component." */
+            dt.setTimeSpec(Qt::LocalTime);
+            return createValue(dt);
+        }
+    }
+}
+
+Item AdjustDateTimeToTimezoneFN::createValue(const QDateTime &dt) const
+{
+    Q_ASSERT(dt.isValid());
+    return DateTime::fromDateTime(dt);
+}
+
+Item AdjustDateToTimezoneFN::createValue(const QDateTime &dt) const
+{
+    Q_ASSERT(dt.isValid());
+    return Date::fromDateTime(dt);
+}
+
+Item AdjustTimeToTimezoneFN::createValue(const QDateTime &dt) const
+{
+    Q_ASSERT(dt.isValid());
+    return SchemaTime::fromDateTime(dt);
+}
+
+QT_END_NAMESPACE