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/**
* @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();
}
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