Atlas - SDL_systime.cpp
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1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2024 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifdef SDL_TIME_NGAGE
24
25#include <bautils.h>
26#include <e32base.h>
27#include <e32cons.h>
28#include <e32std.h>
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34static TTime UnixEpoch();
35
36void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
37{
38    TLanguage language = User::Language();
39
40    switch (language) {
41    case ELangFrench:
42    case ELangSwissFrench:
43    case ELangBelgianFrench:
44    case ELangInternationalFrench:
45    case ELangGerman:
46    case ELangSwissGerman:
47    case ELangAustrian:
48    case ELangSpanish:
49    case ELangInternationalSpanish:
50    case ELangLatinAmericanSpanish:
51    case ELangItalian:
52    case ELangSwissItalian:
53    case ELangSwedish:
54    case ELangFinlandSwedish:
55    case ELangDanish:
56    case ELangNorwegian:
57    case ELangNorwegianNynorsk:
58    case ELangFinnish:
59    case ELangPortuguese:
60    case ELangBrazilianPortuguese:
61    case ELangTurkish:
62    case ELangCyprusTurkish:
63    case ELangIcelandic:
64    case ELangRussian:
65    case ELangHungarian:
66    case ELangDutch:
67    case ELangBelgianFlemish:
68    case ELangCzech:
69    case ELangSlovak:
70    case ELangPolish:
71    case ELangSlovenian:
72    case ELangTaiwanChinese:
73    case ELangHongKongChinese:
74    case ELangPrcChinese:
75    case ELangJapanese:
76    case ELangThai:
77    case ELangAfrikaans:
78    case ELangAlbanian:
79    case ELangAmharic:
80    case ELangArabic:
81    case ELangArmenian:
82    case ELangAzerbaijani:
83    case ELangBelarussian:
84    case ELangBengali:
85    case ELangBulgarian:
86    case ELangBurmese:
87    case ELangCatalan:
88    case ELangCroatian:
89    case ELangEstonian:
90    case ELangFarsi:
91    case ELangScotsGaelic:
92    case ELangGeorgian:
93    case ELangGreek:
94    case ELangCyprusGreek:
95    case ELangGujarati:
96    case ELangHebrew:
97    case ELangHindi:
98    case ELangIndonesian:
99    case ELangIrish:
100    case ELangKannada:
101    case ELangKazakh:
102    case ELangKhmer:
103    case ELangKorean:
104    case ELangLao:
105    case ELangLatvian:
106    case ELangLithuanian:
107    case ELangMacedonian:
108    case ELangMalay:
109    case ELangMalayalam:
110    case ELangMarathi:
111    case ELangMoldavian:
112    case ELangMongolian:
113    case ELangPunjabi:
114    case ELangRomanian:
115    case ELangSerbian:
116    case ELangSinhalese:
117    case ELangSomali:
118    case ELangSwahili:
119    case ELangTajik:
120    case ELangTamil:
121    case ELangTelugu:
122    case ELangTibetan:
123    case ELangTigrinya:
124    case ELangTurkmen:
125    case ELangUkrainian:
126    case ELangUrdu:
127    case ELangUzbek:
128    case ELangVietnamese:
129    case ELangWelsh:
130    case ELangZulu:
131        *df = SDL_DATE_FORMAT_DDMMYYYY;
132        *tf = SDL_TIME_FORMAT_24HR;
133        break;
134    case ELangAmerican:
135    case ELangCanadianEnglish:
136    case ELangInternationalEnglish:
137    case ELangSouthAfricanEnglish:
138    case ELangAustralian:
139    case ELangNewZealand:
140    case ELangCanadianFrench:
141        *df = SDL_DATE_FORMAT_MMDDYYYY;
142        *tf = SDL_TIME_FORMAT_12HR;
143        break;
144    case ELangEnglish:
145    case ELangOther:
146    default:
147        *df = SDL_DATE_FORMAT_DDMMYYYY;
148        *tf = SDL_TIME_FORMAT_24HR;
149        break;
150    }
151}
152
153bool SDL_GetCurrentTime(SDL_Time *ticks)
154{
155    CHECK_PARAM(!ticks)
156    {
157        return SDL_InvalidParamError("ticks");
158    }
159
160    TTime now;
161    now.UniversalTime();
162
163    TTimeIntervalMicroSeconds interval = now.MicroSecondsFrom(UnixEpoch());
164    TInt64 interval_ns = interval.Int64() * 1000;
165    Uint32 ns_low = interval_ns.Low();
166    Uint32 ns_high = interval_ns.High();
167
168    *ticks = ((Uint64)ns_high << 32) | ns_low;
169
170    return true;
171}
172
173#define SYMBIAN_UNIX_EPOCH_OFFSET_US 62135596800000000LL
174
175bool SDL_TimeToDateTime(SDL_Time ticks, SDL_DateTime *dt, bool localTime)
176{
177    CHECK_PARAM(!dt)
178    {
179        return SDL_InvalidParamError("dt");
180    }
181
182    long long unixMicros = ticks / 1000LL;
183
184    unixMicros += SYMBIAN_UNIX_EPOCH_OFFSET_US;
185
186    TInt32 high = (TInt32)(unixMicros >> 32);
187    TUint32 low = (TUint32)(unixMicros & 0xFFFFFFFFu);
188    TInt64 symbianTime(high, low);
189
190    TTime s60Time(symbianTime);
191
192    if (localTime) {
193        s60Time.HomeTime();
194    }
195
196    TDateTime dtSym = s60Time.DateTime();
197
198    dt->year = dtSym.Year();
199    dt->month = dtSym.Month() + 1; // Months are 0-11
200    dt->day = dtSym.Day() + 1;     // Days are 0-30
201    dt->hour = dtSym.Hour();
202    dt->minute = dtSym.Minute();
203    dt->second = dtSym.Second();
204    dt->nanosecond = (int)(ticks % 1000000000LL);
205    dt->day_of_week = s60Time.DayNoInWeek();
206    dt->utc_offset = 0;
207
208    return true;
209}
210
211static TTime UnixEpoch()
212{
213    _LIT(KUnixEpoch, "19700101:000000.000000");
214    TTime epochTime;
215    epochTime.Set(KUnixEpoch);
216    return epochTime;
217}
218
219#ifdef __cplusplus
220}
221#endif
222
223#endif // SDL_TIME_NGAGE
224
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