summaryrefslogtreecommitdiff
path: root/src/modules/utils/timeutils.cpp
blob: a27a65ee5265351810c26794b95fedfc6d9b97d1 (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
/*
Miranda IM: the free IM client for Microsoft* Windows*

Copyright 2000-12 Miranda IM, 2012-13 Miranda NG project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

implements services to handle location - based timezones, instead of
simple UTC offsets.
*/

#include "..\..\core\commonheaders.h"

//KB167296
void UnixTimeToFileTime(mir_time ts, LPFILETIME pft)
{
	unsigned __int64 ll = UInt32x32To64(ts, 10000000) + 116444736000000000i64;
	pft->dwLowDateTime = (DWORD)ll;
	pft->dwHighDateTime = ll >> 32;
}

mir_time FileTimeToUnixTime(LPFILETIME pft)
{
	unsigned __int64 ll = (unsigned __int64)pft->dwHighDateTime << 32 | pft->dwLowDateTime;
	ll -= 116444736000000000i64;
	return (mir_time)(ll / 10000000);
}

void FormatTime(const SYSTEMTIME *st, const TCHAR *szFormat, TCHAR *szDest, int cbDest)
{
	if (szDest == NULL || cbDest == 0) return;

	TCHAR *pDest = szDest;
	int destCharsLeft = cbDest - 1;

	for (const TCHAR* pFormat = szFormat; *pFormat; ++pFormat)
	{
		DWORD fmt;
		bool date, iso = false;
		switch (*pFormat)
		{
		case 't':
			fmt = TIME_NOSECONDS;
			date = false;
			break;

		case 's':
			fmt = 0;
			date = false;
			break;

		case 'm':
			fmt = TIME_NOMINUTESORSECONDS;
			date = false;
			break;

		case 'd':
			fmt = DATE_SHORTDATE;
			date = true;
			break;

		case 'D':
			fmt = DATE_LONGDATE;
			date = true;
			break;

		case 'I':
			iso = true;
			break;

		default:
			if (destCharsLeft--)
				*pDest++=*pFormat;
			continue;
		}

		TCHAR dateTimeStr[64];
		int dateTimeStrLen;

		if (iso)
		{
			dateTimeStrLen = mir_sntprintf(dateTimeStr, SIZEOF(dateTimeStr),
				_T("%d-%02d-%02dT%02d:%02d:%02dZ"),
				st->wYear, st->wMonth, st->wDay,
				st->wHour, st->wMinute, st->wSecond) + 1;
		}
		else if (date)
			dateTimeStrLen = GetDateFormat(LOCALE_USER_DEFAULT, fmt, st, NULL,
				dateTimeStr, SIZEOF(dateTimeStr));
		else
			dateTimeStrLen = GetTimeFormat(LOCALE_USER_DEFAULT, fmt, st, NULL,
				dateTimeStr, SIZEOF(dateTimeStr));

		if (dateTimeStrLen) --dateTimeStrLen;
		if (destCharsLeft < dateTimeStrLen) dateTimeStrLen = destCharsLeft;
		memcpy(pDest, dateTimeStr, dateTimeStrLen * sizeof(dateTimeStr[0]));
		destCharsLeft -= dateTimeStrLen;
		pDest += dateTimeStrLen;
	}
	*pDest = 0;
}