summaryrefslogtreecommitdiff
path: root/indra/newview/lldateutil.cpp
blob: c7fc45f61ee68347beffcb6cf3397d73ec3d419f (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
/** 
* @file lldateutil.cpp
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
* 
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
* 
* This library 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
* Lesser General Public License for more details.
* 
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
* 
* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
* $/LicenseInfo$
*/

#include "llviewerprecompiledheaders.h"

#include "lldateutil.h"

#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/date_time/posix_time/ptime.hpp>

// Linden libraries
#include "lltrans.h"
#include "llui.h"

using namespace boost::gregorian;
using namespace boost::posix_time;

static S32 DAYS_PER_MONTH_NOLEAP[] =
	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static S32 DAYS_PER_MONTH_LEAP[] =
	{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

static S32 days_from_month(S32 year, S32 month)
{
	llassert_always(1 <= month);
	llassert_always(month <= 12);

	if (year % 4 == 0 
		&& year % 100 != 0)
	{
		// leap year
		return DAYS_PER_MONTH_LEAP[month - 1];
	}
	else
	{
		return DAYS_PER_MONTH_NOLEAP[month - 1];
	}
}

bool LLDateUtil::dateFromPDTString(LLDate& date, const std::string& str)
{
	S32 month, day, year;
	S32 matched = sscanf(str.c_str(), "%d/%d/%d", &month, &day, &year);
	if (matched != 3) return false;
	date.fromYMDHMS(year, month, day);
	F64 secs_since_epoch = date.secondsSinceEpoch();
	// Correct for the fact that specified date is in Pacific time, == UTC - 8
	secs_since_epoch += 8.0 * 60.0 * 60.0;
	date.secondsSinceEpoch(secs_since_epoch);
	return true;
}

std::string LLDateUtil::ageFromDate(const LLDate& born_date, const LLDate& now)
{
	S32 born_month, born_day, born_year;
	// explode out to month/day/year again
	born_date.split(&born_year, &born_month, &born_day);

	S32 now_year, now_month, now_day;
	now.split(&now_year, &now_month, &now_day);

	// Do grade-school subtraction, from right-to-left, borrowing from the left
	// when things go negative
	S32 age_days = (now_day - born_day);
	if (age_days < 0)
	{
		now_month -= 1;
		if (now_month == 0)
		{
			now_year -= 1;
			now_month = 12;
		}
		age_days += days_from_month(now_year, now_month);
	}
	S32 age_months = (now_month - born_month);
	if (age_months < 0)
	{
		now_year -= 1;
		age_months += 12;
	}
	S32 age_years = (now_year - born_year);

	// Noun pluralization depends on language
	std::string lang = LLUI::getLanguage();

	// Try for age in round number of years
	LLStringUtil::format_map_t args;

	if (age_months > 0 || age_years > 0)
	{
		args["[AGEYEARS]"] =
			LLTrans::getCountString(lang, "AgeYears", age_years);
		args["[AGEMONTHS]"] =
			LLTrans::getCountString(lang, "AgeMonths", age_months);

		// We want to display times like:
		// 2 year 2 months
		// 2 years (implicitly 0 months)
		// 11 months
		if (age_years > 0)
		{
			if (age_months > 0)
			{
				return LLTrans::getString("YearsMonthsOld", args);
			}
			else
			{
				return LLTrans::getString("YearsOld", args);
			}
		}
		else // age_years == 0
		{
			return LLTrans::getString("MonthsOld", args);
		}
	}
	// you're 0 months old, display in weeks or days

	// Now for age in weeks
	S32 age_weeks = age_days / 7;
	age_days = age_days % 7;
	if (age_weeks > 0)
	{
		args["[AGEWEEKS]"] = 
			LLTrans::getCountString(lang, "AgeWeeks", age_weeks);
		return LLTrans::getString("WeeksOld", args);
	}

	// Down to days now
	if (age_days > 0)
	{
		args["[AGEDAYS]"] =
			LLTrans::getCountString(lang, "AgeDays", age_days);
		return LLTrans::getString("DaysOld", args);
	}

	return LLTrans::getString("TodayOld");
}

std::string LLDateUtil::ageFromDate(const std::string& date_string, const LLDate& now)
{
	LLDate born_date;

	if (!dateFromPDTString(born_date, date_string))
		return "???";

	return ageFromDate(born_date, now);
}

std::string LLDateUtil::ageFromDate(const std::string& date_string)
{
	return ageFromDate(date_string, LLDate::now());
}

//std::string LLDateUtil::ageFromDateISO(const std::string& date_string,
//									   const LLDate& now)
//{
//	S32 born_month, born_day, born_year;
//	S32 matched = sscanf(date_string.c_str(), "%d-%d-%d",
//			&born_year, &born_month, &born_day);
//	if (matched != 3) return "???";
//	date.fromYMDHMS(year, month, day);
//	F64 secs_since_epoch = date.secondsSinceEpoch();
//	// Correct for the fact that specified date is in Pacific time, == UTC - 8
//	secs_since_epoch += 8.0 * 60.0 * 60.0;
//	date.secondsSinceEpoch(secs_since_epoch);
//	return ageFromDate(born_year, born_month, born_day, now);
//}
//
//std::string LLDateUtil::ageFromDateISO(const std::string& date_string)
//{
//	return ageFromDateISO(date_string, LLDate::now());
//}

S32 LLDateUtil::secondsSinceEpochFromString(const std::string& format, const std::string& str)
{
	date_input_facet *facet = new date_input_facet(format);

	std::stringstream ss;
	ss << str;
	ss.imbue(std::locale(ss.getloc(), facet));

	date d;
	ss >> d;

	ptime time_t_date(d);
	ptime time_t_epoch(date(1970,1,1));

	// We assume that the date defined by str is in UTC, so the difference
	// is calculated with no time zone corrections.
	time_duration diff = time_t_date - time_t_epoch;

	return diff.total_seconds();
}