summaryrefslogtreecommitdiffstats
path: root/src/tools/qdatetime.cpp
blob: 6a8d45e202dc0aeed2516bd5dcde7d841af95781 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
/****************************************************************************
**
** Implementation of date and time classes
**
** Created : 940124
**
** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
**
** This file is part of the tools module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file.  Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#include "qplatformdefs.h"

#include "ntqdatetime.h"
#include "ntqdatastream.h"
#include "ntqregexp.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 TQDate, TQTime and TQDateTime
 *****************************************************************************/

// Replaces tokens by their value. See TQDateTime::toString() for a list of valid tokens
static TQString getFmtString( const TQString& f, const TQTime* dt = 0, const TQDate* dd = 0, bool am_pm = FALSE )
{
    if ( f.isEmpty() )
	return TQString::null;

    TQString buf = f;

    if ( dt ) {
	if ( f == "h" ) {
	    if ( ( am_pm ) && ( dt->hour() > 12 ) )
		buf = TQString::number( dt->hour() - 12 );
	    else if ( ( am_pm ) && ( dt->hour() == 0 ) )
		buf = "12";
	    else
		buf = TQString::number( dt->hour() );
	} else if ( f == "hh" ) {
	    if ( ( am_pm ) && ( dt->hour() > 12 ) )
		buf = TQString::number( dt->hour() - 12 ).rightJustify( 2, '0', TRUE );
	    else if ( ( am_pm ) && ( dt->hour() == 0 ) )
		buf = "12";
	    else
		buf = TQString::number( dt->hour() ).rightJustify( 2, '0', TRUE );
	} else if ( f == "m" ) {
	    buf = TQString::number( dt->minute() );
	} else if ( f == "mm" ) {
	    buf = TQString::number( dt->minute() ).rightJustify( 2, '0', TRUE );
	} else if ( f == "s" ) {
	    buf = TQString::number( dt->second() );
	} else if ( f == "ss" ) {
	    buf = TQString::number( dt->second() ).rightJustify( 2, '0', TRUE );
	} else if ( f == "z" ) {
	    buf = TQString::number( dt->msec() );
	} else if ( f == "zzz" ) {
	    buf = TQString::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 = TQString::number( dd->day() );
	} else if ( f == "dd" ) {
	    buf = TQString::number( dd->day() ).rightJustify( 2, '0', TRUE );
	} else if ( f == "M" ) {
	    buf = TQString::number( dd->month() );
	} else if ( f == "MM" ) {
	    buf = TQString::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 = TQString::number( dd->year() ).right( 2 );
	} else if ( f == "yyyy" ) {
	    buf = TQString::number( dd->year() );
	}
    }

    return buf;
}

// Parses the format string and uses getFmtString to get the values for the tokens. Ret
static TQString fmtDateTime( const TQString& f, const TQTime* dt = 0, const TQDate* dd = 0 )
{
    if ( f.isEmpty() ) {
	return TQString::null;
    }

    if ( dt && !dt->isValid() )
	return TQString::null;
    if ( dd && !dd->isValid() )
	return TQString::null;

    bool ap = ( f.contains( "AP" ) || f.contains( "ap" ) );

    TQString buf;
    TQString frm;
    TQChar 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 = TQString::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

/*****************************************************************************
  TQDate member functions
 *****************************************************************************/

/*!
    \class TQDate ntqdatetime.h
    \reentrant
    \brief The TQDate class provides date functions.

    \ingroup time
    \mainclass

    A TQDate 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 TQDate object is typically created either by giving the year,
    month and day numbers explicitly, or by using the static function
    currentDate(), which creates a TQDate object containing the system
    clock's date. An explicit date can also be set using setYMD(). The
    fromString() function returns a TQDate 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.

    TQDate provides a full set of operators to compare two TQDate
    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 TQDate 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 TQDate), and
    subsequently by most other Western countries, until 1923.

    The end of time is reached around the year 8000, by which time we
    expect TQt to be obsolete.

    \sa TQTime TQDateTime TQDateEdit TQDateTimeEdit
*/

/*!
    \enum TQt::DateFormat

    \value TextDate (default) TQt format
    \value ISODate ISO 8601 extended format (YYYY-MM-DD, or with time,
    YYYY-MM-DDTHH:MM:SS)
    \value LocalDate locale dependent format
*/


/*!
    \enum TQt::TimeSpec

    \value LocalTime Locale dependent time (Timezones and Daylight Savings Time)
    \value UTC Coordinated Universal Time, replaces Greenwich Time
*/

/*!
    \fn TQDate::TQDate()

    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()
*/

TQDate::TQDate( int y, int m, int d )
{
    jd = 0;
    setYMD( y, m, d );
}


/*!
    \fn bool TQDate::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 TQDate::isValid() const
{
    return jd >= FIRST_DAY;
}


/*!
    Returns the year (1752..8000) of this date.

    \sa month(), day()
*/

int TQDate::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 TQDate::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 TQDate::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 TQDate::dayOfWeek() const
{
    return ( jd % 7 ) + 1;
}

/*!
    Returns the day of the year (1..365) for this date.

    \sa day(), dayOfWeek()
*/

int TQDate::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 TQDate::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 TQDate::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.

    \legalese

    Copyright (c) 1989 The Regents of the University of California.
    All rights reserved.

    Redistribution and use in source and binary forms are permitted
    provided that the above copyright notice and this paragraph are
    duplicated in all such forms and that any documentation,
    advertising materials, and other materials related to such
    distribution and use acknowledge that the software was developed
    by the University of California, Berkeley.  The name of the
    University may not be used to endorse or promote products derived
    from this software without specific prior written permission.
    THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    \sa isValid()
*/

int TQDate::weekNumber( int *yearNumber ) const
{
    if ( !isValid() )
	return 0;

    int	year = TQDate::year();
    int	yday = dayOfYear() - 1;
    int	wday = dayOfWeek();
    if (wday == 7)
    	wday = 0;
    int	w;

    for (;;) {
	int len;
	int bot;
	int top;

	len = leapYear(year) ? 366 : 365;
	/*
	** What yday (-3 ... 3) does
	** the ISO year begin on?
	*/
	bot = ((yday + 11 - wday) % 7) - 3;
	/*
	** What yday does the NEXT
	** ISO year begin on?
	*/
	top = bot - (len % 7);
	if (top < -3)
    	    top += 7;
	top += len;
	if (yday >= top) {
	    ++year;
    	    w = 1;
	    break;
	}
	if (yday >= bot) {
	    w = 1 + ((yday - bot) / 7);
	    break;
	}
	--year;
	yday += leapYear(year) ? 366 : 365;
    }
    if (yearNumber != 0)
    	*yearNumber = year;
    return w;
}

/*!
  \fn TQString TQDate::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()
*/

TQString TQDate::shortMonthName( int month )
{
#if defined(QT_CHECK_RANGE)
    if ( month < 1 || month > 12 ) {
	tqWarning( "TQDate::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 TQString::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 TQString::fromUcs2( (ushort*)buf );
    } , {
	char buf[255];
	if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "MMM", (char*)&buf, 255 ) )
	    return TQString::fromLocal8Bit( buf );
    } );
#endif
    return TQString::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()
*/

TQString TQDate::longMonthName( int month )
{
#if defined(QT_CHECK_RANGE)
    if ( month < 1 || month > 12 ) {
	tqWarning( "TQDate::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 TQString::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 TQString::fromUcs2( (ushort*)buf );
    } , {
	char buf[255];
	if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "MMMM", (char*)&buf, 255 ) )
	    return TQString::fromLocal8Bit( buf );
    } )
#endif

    return TQString::null;
}

/*!
  \fn TQString TQDate::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()
*/

TQString TQDate::shortDayName( int weekday )
{
#if defined(QT_CHECK_RANGE)
    if ( weekday < 1 || weekday > 7 ) {
	tqWarning( "TQDate::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 TQString::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 TQString::fromUcs2( (ushort*)buf );
    } , {
	char buf[255];
	if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "ddd", (char*)&buf, 255 ) )
	    return TQString::fromLocal8Bit( buf );
    } );
#endif

    return TQString::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()
*/

TQString TQDate::longDayName( int weekday )
{
#if defined(QT_CHECK_RANGE)
    if ( weekday < 1 || weekday > 7 ) {
	tqWarning( "TQDate::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 TQString::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 TQString::fromUcs2( (ushort*)buf );
    } , {
	char buf[255];
	if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, "dddd", (char*)&buf, 255 ) )
	    return TQString::fromLocal8Bit( buf );
    } );
#endif

    return TQString::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 TQt::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 TQt::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 TQt::LocalDate, the string format depends on the
    locale settings of the system.

    If the date is an invalid date, then TQString::null will be returned.

    \sa shortDayName(), shortMonthName()
*/
TQString TQDate::toString( TQt::DateFormat f ) const
{
    if ( !isValid() )
	return TQString::null;
    int y, m, d;
    julianToGregorian( jd, y, m, d );
    switch ( f ) {
    case TQt::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 TQString::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 TQString::fromUcs2( (ushort*)buf );
	    } , {
		char buf[255];
		if ( GetDateFormatA( LOCALE_USER_DEFAULT, 0, &st, 0, (char*)&buf, 255 ) )
		    return TQString::fromLocal8Bit( buf );
	    } );
#endif
	    return TQString::null;
	}
    default:
#ifndef QT_NO_TEXTDATE
    case TQt::TextDate:
	{
	    TQString buf = shortDayName( dayOfWeek() );
	    buf += ' ';
	    buf += shortMonthName( m );
	    TQString t;
	    t.sprintf( " %d %d", d, y );
	    buf += t;
	    return buf;
	}
#endif
    case TQt::ISODate:
	{
	    TQString month( TQString::number( m ).rightJustify( 2, '0' ) );
	    TQString day( TQString::number( d ).rightJustify( 2, '0' ) );
	    return TQString::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 TQDate::shortDayName().
    \row \i dddd
	 \i the long localized day name (e.g. 'Monday'..'Sunday').
	    Uses TQDate::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 TQDate::shortMonthName().
    \row \i MMMM
	 \i the long localized month name (e.g. 'January'..'December').
	    Uses TQDate::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 TQDate 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

    If the date is an invalid date, then TQString::null will be returned.

    \sa TQDateTime::toString() TQTime::toString()

*/
TQString TQDate::toString( const TQString& 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 TQDate::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)
	 tqWarning( "TQDate::setYMD: Invalid date %04d-%02d-%02d", y, m, d );
#endif
	 return FALSE;
    }
    jd = gregorianToJulian( y, m, d );
    return TRUE;
}

/*!
    Returns a TQDate object containing a date \a ndays later than the
    date of this object (or earlier if \a ndays is negative).

    \sa addMonths() addYears() daysTo()
*/

TQDate TQDate::addDays( int ndays ) const
{
    TQDate d;
    d.jd = jd + ndays;
    return d;
}

/*!
    Returns a TQDate object containing a date \a nmonths later than the
    date of this object (or earlier if \a nmonths is negative).

    \sa addDays() addYears()
*/

TQDate TQDate::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;
	    }
	}
    }

    TQDate tmp(y,m,1);

    if( d > tmp.daysInMonth() )
	d = tmp.daysInMonth();

    TQDate date(y, m, d);
    return date;

}

/*!
    Returns a TQDate object containing a date \a nyears later than the
    date of this object (or earlier if \a nyears is negative).

    \sa addDays(), addMonths()
*/

TQDate TQDate::addYears( int nyears ) const
{
    int y, m, d;
    julianToGregorian( jd, y, m, d );
    y += nyears;

    TQDate tmp(y,m,1);

    if( d > tmp.daysInMonth() )
	d = tmp.daysInMonth();

    TQDate 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
	TQDate d1( 1995, 5, 17 );  // May 17th 1995
	TQDate d2( 1995, 5, 20 );  // May 20th 1995
	d1.daysTo( d2 );          // returns 3
	d2.daysTo( d1 );          // returns -3
    \endcode

    \sa addDays()
*/

int TQDate::daysTo( const TQDate &d ) const
{
    return d.jd - jd;
}


/*!
    \fn bool TQDate::operator==( const TQDate &d ) const

    Returns TRUE if this date is equal to \a d; otherwise returns FALSE.
*/

/*!
    \fn bool TQDate::operator!=( const TQDate &d ) const

    Returns TRUE if this date is different from \a d; otherwise returns FALSE.
*/

/*!
    \fn bool TQDate::operator<( const TQDate &d ) const

    Returns TRUE if this date is earlier than \a d, otherwise returns FALSE.
*/

/*!
    \fn bool TQDate::operator<=( const TQDate &d ) const

    Returns TRUE if this date is earlier than or equal to \a d,
    otherwise returns FALSE.
*/

/*!
    \fn bool TQDate::operator>( const TQDate &d ) const

    Returns TRUE if this date is later than \a d, otherwise returns FALSE.
*/

/*!
    \fn bool TQDate::operator>=( const TQDate &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 TQTime::currentTime(), TQDateTime::currentDateTime()
*/

TQDate TQDate::currentDate()
{
    return currentDate( TQt::LocalTime );
}

/*!
  Returns the current date, as reported by the system clock, for the
  TimeSpec \a ts. The default TimeSpec is LocalTime.

  \sa TQTime::currentTime(), TQDateTime::currentDateTime(), TQt::TimeSpec
*/
TQDate TQDate::currentDate( TQt::TimeSpec ts )
{
    TQDate d;
#if defined(Q_OS_WIN32)
    SYSTEMTIME t;
    memset( &t, 0, sizeof(SYSTEMTIME) );
    if ( ts == TQt::LocalTime )
	GetLocalTime( &t );
    else
	GetSystemTime( &t );
    d.jd = gregorianToJulian( t.wYear, t.wMonth, t.wDay );
#else
    // posix compliant system
    time_t ltime;
    time( &ltime );
    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 == TQt::LocalTime )
	t = localtime_r( &ltime, &res );
    else
	t = gmtime_r( &ltime, &res );
#  else
    if ( ts == TQt::LocalTime )
	t = localtime( &ltime );
    else
	t = gmtime( &ltime );
#  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 TQDate represented by the string \a s, using the format
    \a f, or an invalid date if the string cannot be parsed.

    Note for \c TQt::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 TQt::LocalDate cannot be used here.
*/
TQDate TQDate::fromString( const TQString& s, TQt::DateFormat f )
{
    if ( ( s.isEmpty() ) || ( f == TQt::LocalDate ) ) {
#if defined(QT_CHECK_RANGE)
	tqWarning( "TQDate::fromString: Parameter out of range" );
#endif
	TQDate d;
	d.jd = 0;
	return d;
    }
    switch ( f ) {
    case TQt::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 TQDate( year, month, day );
	}
	break;
    default:
#ifndef QT_NO_TEXTDATE
    case TQt::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;

	    TQString 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 ) {
		tqWarning( "TQDate::fromString: Parameter out of range" );
		TQDate d;
		d.jd = 0;
		return d;
	    }
#endif
	    int day = s.mid( dayPos, 2 ).stripWhiteSpace().toInt();
	    int year = s.right( 4 ).toInt();
	    return TQDate( year, month, day );
	}
#else
	break;
#endif
    }
    return TQDate();
}
#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
    TQDate::isValid( 2002, 5, 17 );  // TRUE   May 17th 2002 is valid
    TQDate::isValid( 2002, 2, 30 );  // FALSE  Feb 30th does not exist
    TQDate::isValid( 2004, 2, 29 );  // TRUE   2004 is a leap year
    TQDate::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 TQDate::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 TQDate::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 TQDate::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 TQDate::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++;
    }
}


/*****************************************************************************
  TQTime member functions
 *****************************************************************************/

/*!
    \class TQTime ntqdatetime.h
    \reentrant

    \brief The TQTime class provides clock time functions.

    \ingroup time
    \mainclass

    A TQTime 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.

    TQTime 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 TQTime 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 TQTime 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.

    TQTime provides a full set of operators to compare two TQTime
    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.

    TQTime can be used to measure a span of elapsed time using the
    start(), restart(), and elapsed() functions.

    \sa TQDate, TQDateTime
*/

/*!
    \fn TQTime::TQTime()

    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()
*/

TQTime::TQTime( int h, int m, int s, int ms )
{
    setHMS( h, m, s, ms );
}


/*!
    \fn bool TQTime::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 TQTime::isValid() const
{
    return ds < MSECS_PER_DAY;
}


/*!
    Returns the hour part (0..23) of the time.
*/

int TQTime::hour() const
{
    return ds / MSECS_PER_HOUR;
}

/*!
    Returns the minute part (0..59) of the time.
*/

int TQTime::minute() const
{
    return (ds % MSECS_PER_HOUR)/MSECS_PER_MIN;
}

/*!
    Returns the second part (0..59) of the time.
*/

int TQTime::second() const
{
    return (ds / 1000)%SECS_PER_MIN;
}

/*!
    Returns the millisecond part (0..999) of the time.
*/

int TQTime::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 TQt::TextDate, the string format is HH:MM:SS; e.g. 1
    second before midnight would be "23:59:59".

    If \a f is \c TQt::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 TQt::LocalDate, the string format depends on the locale
    settings of the system.

    If the time is an invalid time, then TQString::null will be returned.
*/

TQString TQTime::toString( TQt::DateFormat f ) const
{
    if ( !isValid() )
	return TQString::null;

    switch ( f ) {
    case TQt::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 TQString::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 TQString::fromUcs2( (ushort*)buf );
	    } , {
		char buf[255];
		if ( GetTimeFormatA( LOCALE_USER_DEFAULT, 0, &st, 0, (char*)&buf, 255 ) )
		    return TQString::fromLocal8Bit( buf );
	    } );
#endif
	    return TQString::null;
	}
    default:
    case TQt::ISODate:
    case TQt::TextDate:
	TQString 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 TQTime 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

    If the time is an invalid time, then TQString::null will be returned.

    \sa TQDate::toString() TQDateTime::toString()
*/
TQString TQTime::toString( const TQString& 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 TQTime::setHMS( int h, int m, int s, int ms )
{
    if ( !isValid(h,m,s,ms) ) {
#if defined(QT_CHECK_RANGE)
	tqWarning( "TQTime::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 TQTime 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
    TQTime n( 14, 0, 0 );                // n == 14:00:00
    TQTime 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(), TQDateTime::addSecs()
*/

TQTime TQTime::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 TQTime measures time within a day and there are 86400
    seconds in a day, the result is always between -86400 and 86400.

    \sa addSecs() TQDateTime::secsTo()
*/

int TQTime::secsTo( const TQTime &t ) const
{
    return ((int)t.ds - (int)ds)/1000;
}

/*!
    Returns a TQTime 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()
*/

TQTime TQTime::addMSecs( int ms ) const
{
    TQTime 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 TQTime measures time within a day and there are 86400
    seconds in a day, the result is always between -86400000 and
    86400000 msec.

    \sa secsTo()
*/

int TQTime::msecsTo( const TQTime &t ) const
{
    return (int)t.ds - (int)ds;
}


/*!
    \fn bool TQTime::operator==( const TQTime &t ) const

    Returns TRUE if this time is equal to \a t; otherwise returns FALSE.
*/

/*!
    \fn bool TQTime::operator!=( const TQTime &t ) const

    Returns TRUE if this time is different from \a t; otherwise returns FALSE.
*/

/*!
    \fn bool TQTime::operator<( const TQTime &t ) const

    Returns TRUE if this time is earlier than \a t; otherwise returns FALSE.
*/

/*!
    \fn bool TQTime::operator<=( const TQTime &t ) const

    Returns TRUE if this time is earlier than or equal to \a t;
    otherwise returns FALSE.
*/

/*!
    \fn bool TQTime::operator>( const TQTime &t ) const

    Returns TRUE if this time is later than \a t; otherwise returns FALSE.
*/

/*!
    \fn bool TQTime::operator>=( const TQTime &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.
*/

TQTime TQTime::currentTime()
{
    return currentTime( TQt::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 TQt::TimeSpec
*/
TQTime TQTime::currentTime( TQt::TimeSpec ts )
{
    TQTime t;
    currentTime( &t, ts );
    return t;
}

#ifndef QT_NO_DATESTRING
/*!
    Returns the representation \a s as a TQTime using the format \a f,
    or an invalid time if this is not possible.

    \warning Note that \c TQt::LocalDate cannot be used here.
*/
TQTime TQTime::fromString( const TQString& s, TQt::DateFormat f )
{
    if ( ( s.isEmpty() ) || ( f == TQt::LocalDate ) ) {
#if defined(QT_CHECK_RANGE)
	tqWarning( "TQTime::fromString: Parameter out of range" );
#endif
	TQTime t;
	t.ds = MSECS_PER_DAY;
	return t;
    }

    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 TQTime( 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
  TQDateTime::currentDateTime() to ensure that the date there is correct.
*/

bool TQTime::currentTime( TQTime *ct )
{
    return currentTime( ct, TQt::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 TQDateTime::currentDateTime() to ensure that
  the date there is correct. The default TimeSpec is LocalTime.

  \sa TQt::TimeSpec
*/
bool TQTime::currentTime( TQTime *ct, TQt::TimeSpec ts )
{
    if ( !ct ) {
#if defined(QT_CHECK_NULL)
	tqWarning( "TQTime::currentTime(TQTime *): Null pointer not allowed" );
#endif
	return FALSE;
    }

#if defined(Q_OS_WIN32)
    SYSTEMTIME t;
    if ( ts == TQt::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 defined(QT_THREAD_SUPPORT) && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
    // use the reentrant versions of localtime() and gmtime() where available
    tm res;
    if ( ts == TQt::LocalTime )
	t = localtime_r( &ltime, &res );
    else
	t = gmtime_r( &ltime, &res );
#  else
    if ( ts == TQt::LocalTime )
	t = localtime( &ltime );
    else
	t = gmtime( &ltime );
#  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( &ltime );
    tm *t;
    if ( ts == TQt::LocalTime )
	localtime( &ltime );
    else
	gmtime( &ltime );
    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
    TQTime::isValid(21, 10, 30); // returns TRUE
    TQTime::isValid(22, 5,  62); // returns FALSE
    \endcode
*/

bool TQTime::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
    TQTime t;
    t.start();
    some_lengthy_task();
    tqDebug( "Time elapsed: %d ms", t.elapsed() );
    \endcode

    \sa restart(), elapsed(), currentTime()
*/

void TQTime::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 TQTime::restart()
{
    TQTime 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 TQTime::elapsed() const
{
    int n = msecsTo( currentTime() );
    if ( n < 0 )				// passed midnight
	n += 86400*1000;
    return n;
}


/*****************************************************************************
  TQDateTime member functions
 *****************************************************************************/

/*!
    \class TQDateTime ntqdatetime.h
    \reentrant
    \brief The TQDateTime class provides date and time functions.

    \ingroup time
    \mainclass

    A TQDateTime object contains a calendar date and a clock time (a
    "datetime"). It is a combination of the TQDate and TQTime 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 TQDateTime 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 TQDateTime 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 TQDateTime 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.

    TQDateTime provides a full set of operators to compare two
    TQDateTime 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
    TQDate and TQTime objects which it embodies.

    \sa TQDate TQTime TQDateTimeEdit
*/


/*!
    \fn TQDateTime::TQDateTime()

    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).
*/

TQDateTime::TQDateTime( const TQDate &date )
    : d(date)
{
}

/*!
    Constructs a datetime with date \a date and time \a time.
*/

TQDateTime::TQDateTime( const TQDate &date, const TQTime &time )
    : d(date), t(time)
{
}


/*!
    \fn bool TQDateTime::isNull() const

    Returns TRUE if both the date and the time are null; otherwise
    returns FALSE. A null datetime is invalid.

    \sa TQDate::isNull(), TQTime::isNull()
*/

/*!
    \fn bool TQDateTime::isValid() const

    Returns TRUE if both the date and the time are valid; otherwise
    returns FALSE.

    \sa TQDate::isValid(), TQTime::isValid()
*/

/*!
    \fn TQDate TQDateTime::date() const

    Returns the date part of the datetime.

    \sa setDate(), time()
*/

/*!
    \fn TQTime TQDateTime::time() const

    Returns the time part of the datetime.

    \sa setTime(), date()
*/

/*!
    \fn void TQDateTime::setDate( const TQDate &date )

    Sets the date part of this datetime to \a date.

    \sa date(), setTime()
*/

/*!
    \fn void TQDateTime::setTime( const TQTime &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 TQDateTime::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 TQDateTime::setTime_t( uint secsSince1Jan1970UTC )
{
    setTime_t( secsSince1Jan1970UTC, TQt::LocalTime );
}

/*!
    Sets the date and time to \a ts time (\c TQt::LocalTime or \c
    TQt::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 TQDateTime::setTime_t( uint secsSince1Jan1970UTC, TQt::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 == TQt::LocalTime )
	brokenDown = localtime_r( &tmp, &res );
    if ( !brokenDown ) {
	brokenDown = gmtime_r( &tmp, &res );
	if ( !brokenDown ) {
	    d.jd = TQDate::gregorianToJulian( 1970, 1, 1 );
	    t.ds = 0;
	    return;
	}
    }
#else
    if ( ts == TQt::LocalTime )
	brokenDown = localtime( &tmp );
    if ( !brokenDown ) {
	brokenDown = gmtime( &tmp );
	if ( !brokenDown ) {
	    d.jd = TQDate::gregorianToJulian( 1970, 1, 1 );
	    t.ds = 0;
	    return;
	}
    }
#endif

    d.jd = TQDate::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 TQt::TextDate, the string format is "Wed May 20
    03:40:13 1998" (using TQDate::shortDayName(), TQDate::shortMonthName(),
    and TQTime::toString() to generate the string, so the day and month
    names will have localized names).

    If \a f is \c TQt::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 TQt::LocalDate, the string format depends on the
    locale settings of the system.

    If the format \a f is invalid or the datetime is invalid, toString()
    returns a null string.

    \sa TQDate::toString() TQTime::toString()
*/

TQString TQDateTime::toString( TQt::DateFormat f ) const
{
    if ( !isValid() )
	return TQString::null;

    if ( f == TQt::ISODate ) {
	return d.toString( TQt::ISODate ) + "T" + t.toString( TQt::ISODate );
    }
#ifndef QT_NO_TEXTDATE
    else if ( f == TQt::TextDate ) {
#ifndef Q_WS_WIN
	TQString buf = d.shortDayName( d.dayOfWeek() );
	buf += ' ';
	buf += d.shortMonthName( d.month() );
	buf += ' ';
	buf += TQString().setNum( d.day() );
	buf += ' ';
#else
	TQString buf;
	TQString winstr;
	QT_WA( {
	    TCHAR out[255];
	    GetLocaleInfo( LOCALE_USER_DEFAULT, LOCALE_ILDATE, out, 255 );
	    winstr = TQString::fromUcs2( (ushort*)out );
	} , {
	    char out[255];
	    GetLocaleInfoA( LOCALE_USER_DEFAULT, LOCALE_ILDATE, (char*)&out, 255 );
	    winstr = TQString::fromLocal8Bit( out );
	} );
	switch ( winstr.toInt() ) {
	case 1:
	    buf = d.shortDayName( d.dayOfWeek() ) + " " + TQString().setNum( d.day() ) + ". " + d.shortMonthName( d.month() ) + " ";
	    break;
	default:
	    buf = d.shortDayName( d.dayOfWeek() ) + " " + d.shortMonthName( d.month() ) + " " + TQString().setNum( d.day() ) + " ";
	    break;
	}
#endif
	buf += t.toString();
	buf += ' ';
	buf += TQString().setNum( d.year() );
	return buf;
    }
#endif
    else if ( f == TQt::LocalDate ) {
	return d.toString( TQt::LocalDate ) + " " + t.toString( TQt::LocalDate );
    }
    return TQString::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 TQDate::shortDayName().
    \row \i dddd
	    \i the long localized day name (e.g. 'Monday'..'Sunday').
	    Uses TQDate::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 TQDate::shortMonthName().
    \row \i MMMM
	    \i the long localized month name (e.g. 'January'..'December').
	    Uses TQDate::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 TQDateTime 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

    If the datetime is an invalid datetime, then TQString::null will be returned.

    \sa TQDate::toString() TQTime::toString()
*/
TQString TQDateTime::toString( const TQString& format ) const
{
    return fmtDateTime( format, &t, &d );
}
#endif //QT_NO_DATESTRING

/*!
    Returns a TQDateTime 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()
*/

TQDateTime TQDateTime::addDays( int ndays ) const
{
    return TQDateTime( d.addDays(ndays), t );
}

/*!
    Returns a TQDateTime 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()
*/

TQDateTime TQDateTime::addMonths( int nmonths ) const
{
    return TQDateTime( d.addMonths(nmonths), t );
}

/*!
    Returns a TQDateTime 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()
*/

TQDateTime TQDateTime::addYears( int nyears ) const
{
    return TQDateTime( d.addYears(nyears), t );
}

/*!
    Returns a TQDateTime 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()
*/

TQDateTime TQDateTime::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;
    }
    TQDateTime 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 TQDateTime::daysTo( const TQDateTime &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
    TQDateTime dt = TQDateTime::currentDateTime();
    TQDateTime xmas( TQDate(dt.date().year(),12,24), TQTime(17,00) );
    tqDebug( "There are %d seconds to Christmas", dt.secsTo(xmas) );
    \endcode

    \sa addSecs(), daysTo(), TQTime::secsTo()
*/

int TQDateTime::secsTo( const TQDateTime &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 TQDateTime::operator==( const TQDateTime &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 TQDateTime::operator!=( const TQDateTime &dt ) const
{
    return  t != dt.t || d != dt.d;
}

/*!
    Returns TRUE if this datetime is earlier than \a dt; otherwise
    returns FALSE.
*/

bool TQDateTime::operator<( const TQDateTime &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 TQDateTime::operator<=( const TQDateTime &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 TQDateTime::operator>( const TQDateTime &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 TQDateTime::operator>=( const TQDateTime &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 TQDate::currentDate(), TQTime::currentTime()
*/

TQDateTime TQDateTime::currentDateTime()
{
    return currentDateTime( TQt::LocalTime );
}

/*!
  Returns the current datetime, as reported by the system clock, for the
  TimeSpec \a ts. The default TimeSpec is LocalTime.

  \sa TQDate::currentDate(), TQTime::currentTime(), TQt::TimeSpec
*/

TQDateTime TQDateTime::currentDateTime( TQt::TimeSpec ts )
{
    TQDateTime dt;
    TQTime t;
    dt.setDate( TQDate::currentDate(ts) );
    if ( TQTime::currentTime(&t, ts) )         // midnight or right after?
	dt.setDate( TQDate::currentDate(ts) ); // fetch date again
    dt.setTime( t );
    return dt;
}

#ifndef QT_NO_DATESTRING
/*!
    Returns the TQDateTime represented by the string \a s, using the
    format \a f, or an invalid datetime if this is not possible.

    Note for \c TQt::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 TQt::LocalDate cannot be used here.
*/
TQDateTime TQDateTime::fromString( const TQString& s, TQt::DateFormat f )
{
    if ( ( s.isEmpty() ) || ( f == TQt::LocalDate ) ) {
#if defined(QT_CHECK_RANGE)
	tqWarning( "TQDateTime::fromString: Parameter out of range" );
#endif
	TQDateTime dt;
	dt.d.jd = 0;
	return dt;
    }
    if ( f == TQt::ISODate ) {
	return TQDateTime( TQDate::fromString( s.mid(0,10), TQt::ISODate ),
			  TQTime::fromString( s.mid(11), TQt::ISODate ) );
    }
#if !defined(QT_NO_REGEXP) && !defined(QT_NO_TEXTDATE)
    else if ( f == TQt::TextDate ) {
        const int firstSpace = s.find(' ');
	TQString monthName( s.mid( firstSpace + 1, 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 == TQDate::shortMonthName( i ) ) {
		    month = i;
		    break;
		}
	    }
	}
#if defined(QT_CHECK_RANGE)
	if ( month < 1 || month > 12 ) {
	    tqWarning( "TQDateTime::fromString: Parameter out of range" );
	    TQDateTime dt;
	    dt.d.jd = 0;
	    return dt;
	}
#endif
	int day = s.mid( firstSpace + 5, 2 ).simplifyWhiteSpace().toInt();
	int year = s.right( 4 ).toInt();
	TQDate date( year, month, day );
	TQTime time;
	int hour, minute, second;
	int pivot = s.find( TQRegExp(TQString::fromLatin1("[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 TQDateTime( date, time );
    }
#endif //QT_NO_REGEXP
    return TQDateTime();
}
#endif //QT_NO_DATESTRING


/*****************************************************************************
  Date/time stream functions
 *****************************************************************************/

#ifndef QT_NO_DATASTREAM
/*!
    \relates TQDate

    Writes the date, \a d, to the data stream, \a s.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/

TQDataStream &operator<<( TQDataStream &s, const TQDate &d )
{
    return s << (TQ_UINT32)(d.jd);
}

/*!
    \relates TQDate

    Reads a date from the stream \a s into \a d.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/

TQDataStream &operator>>( TQDataStream &s, TQDate &d )
{
    TQ_UINT32 jd;
    s >> jd;
    d.jd = jd;
    return s;
}

/*!
    \relates TQTime

    Writes time \a t to the stream \a s.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/

TQDataStream &operator<<( TQDataStream &s, const TQTime &t )
{
    return s << (TQ_UINT32)(t.ds);
}

/*!
    \relates TQTime

    Reads a time from the stream \a s into \a t.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/

TQDataStream &operator>>( TQDataStream &s, TQTime &t )
{
    TQ_UINT32 ds;
    s >> ds;
    t.ds = ds;
    return s;
}

/*!
    \relates TQDateTime

    Writes the datetime \a dt to the stream \a s.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/

TQDataStream &operator<<( TQDataStream &s, const TQDateTime &dt )
{
    return s << dt.d << dt.t;
}

/*!
    \relates TQDateTime

    Reads a datetime from the stream \a s into \a dt.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/

TQDataStream &operator>>( TQDataStream &s, TQDateTime &dt )
{
    s >> dt.d >> dt.t;
    return s;
}
#endif //QT_NO_DATASTREAM