source: branches/4.5.1/src/xmlpatterns/functions/qtimezonefns.cpp@ 1168

Last change on this file since 1168 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.

File size: 5.9 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtXmlPatterns module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qabstractdatetime_p.h"
43#include "qcontextfns_p.h"
44#include "qdate_p.h"
45#include "qschemadatetime_p.h"
46#include "qdaytimeduration_p.h"
47#include "qpatternistlocale_p.h"
48#include "qschematime_p.h"
49
50#include "qtimezonefns_p.h"
51
52QT_BEGIN_NAMESPACE
53
54using namespace QPatternist;
55
56Item AdjustTimezone::evaluateSingleton(const DynamicContext::Ptr &context) const
57{
58 enum
59 {
60 /**
61 * The maximum zone offset, @c PT14H, in milli seconds.
62 */
63 MSecLimit = 14 * 60/*M*/ * 60/*S*/ * 1000/*ms*/
64 };
65
66
67 const Item arg(m_operands.first()->evaluateSingleton(context));
68 if(!arg)
69 return Item();
70
71 QDateTime dt(arg.as<AbstractDateTime>()->toDateTime());
72 // TODO DT dt.setDateOnly(false);
73 Q_ASSERT(dt.isValid());
74 DayTimeDuration::Ptr tz;
75
76 if(m_operands.count() == 2)
77 tz = DayTimeDuration::Ptr(m_operands.at(1)->evaluateSingleton(context).as<DayTimeDuration>());
78 else
79 tz = context->implicitTimezone();
80
81 if(tz)
82 {
83 const MSecondCountProperty tzMSecs = tz->value();
84
85 if(tzMSecs % (1000 * 60) != 0)
86 {
87 context->error(QtXmlPatterns::tr("A zone offset must be in the "
88 "range %1..%2 inclusive. %3 is "
89 "out of range.")
90 .arg(formatData("-PT14H"))
91 .arg(formatData("PT14H"))
92 .arg(formatData(tz->stringValue())),
93 ReportContext::FODT0003, this);
94 return Item();
95 }
96 else if(tzMSecs > MSecLimit ||
97 tzMSecs < -MSecLimit)
98 {
99 context->error(QtXmlPatterns::tr("%1 is not a whole number of minutes.")
100 .arg(formatData(tz->stringValue())),
101 ReportContext::FODT0003, this);
102 return Item();
103 }
104
105 const SecondCountProperty tzSecs = tzMSecs / 1000;
106
107 if(dt.timeSpec() == Qt::LocalTime) /* $arg has no time zone. */
108 {
109 /* "If $arg does not have a timezone component and $timezone is not
110 * the empty sequence, then the result is $arg with $timezone as
111 * the timezone component." */
112 //dt.setTimeSpec(QDateTime::Spec(QDateTime::OffsetFromUTC, tzSecs));
113 dt.setUtcOffset(tzSecs);
114 Q_ASSERT(dt.isValid());
115 return createValue(dt);
116 }
117 else
118 {
119 /* "If $arg has a timezone component and $timezone is not the empty sequence,
120 * then the result is an xs:dateTime value with a timezone component of
121 * $timezone that is equal to $arg." */
122 dt = dt.toUTC();
123 dt = dt.addSecs(tzSecs);
124 //dt.setTimeSpec(QDateTime::Spec(QDateTime::OffsetFromUTC, tzSecs));
125 dt.setUtcOffset(tzSecs);
126 Q_ASSERT(dt.isValid());
127 return createValue(dt);
128 }
129 }
130 else
131 { /* $timezone is the empty sequence. */
132 if(dt.timeSpec() == Qt::LocalTime) /* $arg has no time zone. */
133 {
134 /* "If $arg does not have a timezone component and $timezone is
135 * the empty sequence, then the result is $arg." */
136 return arg;
137 }
138 else
139 {
140 /* "If $arg has a timezone component and $timezone is the empty sequence,
141 * then the result is the localized value of $arg without its timezone component." */
142 dt.setTimeSpec(Qt::LocalTime);
143 return createValue(dt);
144 }
145 }
146}
147
148Item AdjustDateTimeToTimezoneFN::createValue(const QDateTime &dt) const
149{
150 Q_ASSERT(dt.isValid());
151 return DateTime::fromDateTime(dt);
152}
153
154Item AdjustDateToTimezoneFN::createValue(const QDateTime &dt) const
155{
156 Q_ASSERT(dt.isValid());
157 return Date::fromDateTime(dt);
158}
159
160Item AdjustTimeToTimezoneFN::createValue(const QDateTime &dt) const
161{
162 Q_ASSERT(dt.isValid());
163 return SchemaTime::fromDateTime(dt);
164}
165
166QT_END_NAMESPACE
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