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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 : #include <tools/datetime.hxx>
20 : #include <rtl/math.hxx>
21 :
22 256 : DateTime::DateTime( const css::util::DateTime& rDateTime )
23 : : Date( rDateTime.Day, rDateTime.Month, rDateTime.Year ),
24 256 : Time( rDateTime.Hours, rDateTime.Minutes, rDateTime.Seconds, rDateTime.NanoSeconds )
25 : {
26 256 : }
27 :
28 0 : bool DateTime::IsBetween( const DateTime& rFrom, const DateTime& rTo ) const
29 : {
30 0 : if ( (*this >= rFrom) && (*this <= rTo) )
31 0 : return true;
32 : else
33 0 : return false;
34 : }
35 :
36 0 : bool DateTime::operator >( const DateTime& rDateTime ) const
37 : {
38 0 : if ( (Date::operator>( rDateTime )) ||
39 0 : (Date::operator==( rDateTime ) && tools::Time::operator>( rDateTime )) )
40 0 : return true;
41 : else
42 0 : return false;
43 : }
44 :
45 3 : bool DateTime::operator <( const DateTime& rDateTime ) const
46 : {
47 6 : if ( (Date::operator<( rDateTime )) ||
48 4 : (Date::operator==( rDateTime ) && tools::Time::operator<( rDateTime )) )
49 1 : return true;
50 : else
51 2 : return false;
52 : }
53 :
54 30 : bool DateTime::operator >=( const DateTime& rDateTime ) const
55 : {
56 60 : if ( (Date::operator>( rDateTime )) ||
57 60 : (Date::operator==( rDateTime ) && tools::Time::operator>=( rDateTime )) )
58 0 : return true;
59 : else
60 30 : return false;
61 : }
62 :
63 2 : bool DateTime::operator <=( const DateTime& rDateTime ) const
64 : {
65 4 : if ( (Date::operator<( rDateTime )) ||
66 2 : (Date::operator==( rDateTime ) && tools::Time::operator<=( rDateTime )) )
67 0 : return true;
68 : else
69 2 : return false;
70 : }
71 :
72 42 : long DateTime::GetSecFromDateTime( const Date& rDate ) const
73 : {
74 42 : if ( Date::operator<( rDate ) )
75 0 : return 0;
76 : else
77 : {
78 42 : long nSec = Date( *this ) - rDate;
79 42 : nSec *= 24UL*60*60;
80 42 : long nHour = GetHour();
81 42 : long nMin = GetMin();
82 42 : nSec += (nHour*3600)+(nMin*60)+GetSec();
83 42 : return nSec;
84 : }
85 : }
86 :
87 451 : DateTime& DateTime::operator +=( const tools::Time& rTime )
88 : {
89 451 : tools::Time aTime = *this;
90 451 : aTime += rTime;
91 451 : sal_uInt16 nHours = aTime.GetHour();
92 451 : if ( aTime.GetTime() > 0 )
93 : {
94 937 : while ( nHours >= 24 )
95 : {
96 35 : Date::operator++();
97 35 : nHours -= 24;
98 : }
99 451 : aTime.SetHour( nHours );
100 : }
101 0 : else if ( aTime.GetTime() != 0 )
102 : {
103 0 : while ( nHours >= 24 )
104 : {
105 0 : Date::operator--();
106 0 : nHours -= 24;
107 : }
108 0 : Date::operator--();
109 0 : aTime = Time( 24, 0, 0 )+aTime;
110 : }
111 451 : tools::Time::operator=( aTime );
112 :
113 451 : return *this;
114 : }
115 :
116 166 : DateTime& DateTime::operator -=( const tools::Time& rTime )
117 : {
118 166 : tools::Time aTime = *this;
119 166 : aTime -= rTime;
120 166 : sal_uInt16 nHours = aTime.GetHour();
121 166 : if ( aTime.GetTime() > 0 )
122 : {
123 308 : while ( nHours >= 24 )
124 : {
125 0 : Date::operator++();
126 0 : nHours -= 24;
127 : }
128 154 : aTime.SetHour( nHours );
129 : }
130 12 : else if ( aTime.GetTime() != 0 )
131 : {
132 24 : while ( nHours >= 24 )
133 : {
134 0 : Date::operator--();
135 0 : nHours -= 24;
136 : }
137 12 : Date::operator--();
138 12 : aTime = Time( 24, 0, 0 )+aTime;
139 : }
140 166 : tools::Time::operator=( aTime );
141 :
142 166 : return *this;
143 : }
144 :
145 0 : DateTime operator +( const DateTime& rDateTime, long nDays )
146 : {
147 0 : DateTime aDateTime( rDateTime );
148 0 : aDateTime += nDays;
149 0 : return aDateTime;
150 : }
151 :
152 0 : DateTime operator -( const DateTime& rDateTime, long nDays )
153 : {
154 0 : DateTime aDateTime( rDateTime );
155 0 : aDateTime -= nDays;
156 0 : return aDateTime;
157 : }
158 :
159 0 : DateTime operator +( const DateTime& rDateTime, const tools::Time& rTime )
160 : {
161 0 : DateTime aDateTime( rDateTime );
162 0 : aDateTime += rTime;
163 0 : return aDateTime;
164 : }
165 :
166 0 : DateTime operator -( const DateTime& rDateTime, const tools::Time& rTime )
167 : {
168 0 : DateTime aDateTime( rDateTime );
169 0 : aDateTime -= rTime;
170 0 : return aDateTime;
171 : }
172 :
173 6 : DateTime& DateTime::operator +=( double fTimeInDays )
174 : {
175 : double fInt, fFrac;
176 6 : if ( fTimeInDays < 0.0 )
177 : {
178 0 : fInt = ::rtl::math::approxCeil( fTimeInDays );
179 0 : fFrac = fInt <= fTimeInDays ? 0.0 : fTimeInDays - fInt;
180 : }
181 : else
182 : {
183 6 : fInt = ::rtl::math::approxFloor( fTimeInDays );
184 6 : fFrac = fInt >= fTimeInDays ? 0.0 : fTimeInDays - fInt;
185 : }
186 6 : Date::operator+=( long(fInt) ); // full days
187 6 : if ( fFrac )
188 : {
189 3 : tools::Time aTime(0); // default ctor calls system time, we don't need that
190 3 : fFrac *= ::tools::Time::nanoSecPerDay; // time expressed in nanoseconds
191 3 : aTime.MakeTimeFromNS( static_cast<sal_Int64>(fFrac) ); // method handles negative ns
192 3 : operator+=( aTime );
193 : }
194 6 : return *this;
195 : }
196 :
197 1 : DateTime operator +( const DateTime& rDateTime, double fTimeInDays )
198 : {
199 1 : DateTime aDateTime( rDateTime );
200 1 : aDateTime += fTimeInDays;
201 1 : return aDateTime;
202 : }
203 :
204 3416 : double operator -( const DateTime& rDateTime1, const DateTime& rDateTime2 )
205 : {
206 3416 : long nDays = (const Date&) rDateTime1 - (const Date&) rDateTime2;
207 3416 : sal_Int64 nTime = rDateTime1.GetNSFromTime() - rDateTime2.GetNSFromTime();
208 3416 : if ( nTime )
209 : {
210 212 : double fTime = double(nTime);
211 212 : fTime /= ::tools::Time::nanoSecPerDay; // convert from nanoseconds to fraction
212 212 : if ( nDays < 0 && fTime > 0.0 )
213 0 : fTime = 1.0 - fTime;
214 212 : return double(nDays) + fTime;
215 : }
216 3204 : return double(nDays);
217 : }
218 :
219 208 : void DateTime::GetWin32FileDateTime( sal_uInt32 & rLower, sal_uInt32 & rUpper )
220 : {
221 208 : const sal_Int64 a100nPerSecond = SAL_CONST_INT64( 10000000 );
222 208 : const sal_Int64 a100nPerDay = a100nPerSecond * sal_Int64( 60 * 60 * 24 );
223 :
224 208 : sal_Int64 nYears = GetYear() - 1601;
225 : sal_Int64 nDays =
226 416 : nYears * 365 +
227 624 : nYears / 4 - nYears / 100 + nYears / 400 +
228 416 : GetDayOfYear() - 1;
229 :
230 : sal_Int64 aTime =
231 208 : a100nPerDay * nDays +
232 208 : GetNSFromTime()/100;
233 :
234 208 : rLower = sal_uInt32( aTime % SAL_CONST_UINT64( 0x100000000 ) );
235 208 : rUpper = sal_uInt32( aTime / SAL_CONST_UINT64( 0x100000000 ) );
236 208 : }
237 :
238 670 : DateTime DateTime::CreateFromWin32FileDateTime( const sal_uInt32 & rLower, const sal_uInt32 & rUpper )
239 : {
240 670 : const sal_Int64 a100nPerSecond = SAL_CONST_INT64( 10000000 );
241 670 : const sal_Int64 a100nPerDay = a100nPerSecond * sal_Int64( 60 * 60 * 24 );
242 :
243 : sal_Int64 aTime = sal_Int64(
244 670 : sal_uInt64( rUpper ) * SAL_CONST_UINT64( 0x100000000 ) +
245 670 : sal_uInt64( rLower ) );
246 :
247 670 : sal_Int64 nDays = aTime / a100nPerDay;
248 : sal_Int64 nYears =
249 670 : ( nDays -
250 1340 : ( nDays / ( 4 * 365 ) ) +
251 1340 : ( nDays / ( 100 * 365 ) ) -
252 1340 : ( nDays / ( 400 * 365 ) ) ) / 365;
253 670 : nDays -= nYears * 365 + nYears / 4 - nYears / 100 + nYears / 400;
254 :
255 670 : sal_uInt16 nMonths = 0;
256 4456 : for( sal_Int64 nDaysCount = nDays; nDaysCount >= 0; )
257 : {
258 3116 : nDays = nDaysCount;
259 3116 : nMonths ++;
260 : nDaysCount -= Date(
261 3116 : 1, nMonths, sal::static_int_cast< sal_uInt16 >(1601 + nYears) ).
262 3116 : GetDaysInMonth();
263 : }
264 :
265 : Date _aDate(
266 : (sal_uInt16)( nDays + 1 ), nMonths,
267 670 : sal::static_int_cast< sal_uInt16 >(nYears + 1601) );
268 670 : tools::Time _aTime( sal_uIntPtr( ( aTime / ( a100nPerSecond * 60 * 60 ) ) % sal_Int64( 24 ) ),
269 670 : sal_uIntPtr( ( aTime / ( a100nPerSecond * 60 ) ) % sal_Int64( 60 ) ),
270 670 : sal_uIntPtr( ( aTime / ( a100nPerSecond ) ) % sal_Int64( 60 ) ),
271 2680 : (aTime % a100nPerSecond) * 100 );
272 :
273 670 : return DateTime( _aDate, _aTime );
274 : }
275 :
276 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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