Files
GoldenCheetah/src/TimeUtils.cpp
2011-02-27 11:36:14 +00:00

100 lines
3.1 KiB
C++

/*
* Copyright (c) 2007 Sean C. Rhea (srhea@srhea.net)
*
* 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., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "TimeUtils.h"
#include <math.h>
#include <QRegExpValidator>
QString time_to_string(double secs)
{
QString result;
unsigned rounded = static_cast<unsigned>(round(secs));
bool needs_colon = false;
if (rounded >= 3600) {
result += QString("%1").arg(rounded / 3600);
rounded %= 3600;
needs_colon = true;
}
if (needs_colon)
result += ":";
result += QString("%1").arg(rounded / 60, 2, 10, QLatin1Char('0'));
rounded %= 60;
result += ":";
result += QString("%1").arg(rounded, 2, 10, QLatin1Char('0'));
return result;
}
double str_to_interval(QString s)
{
QRegExp rx("(\\d+\\s*h)?\\s*(\\d{1,2}\\s*m)?\\s*(\\d{1,2})(\\.\\d+)?\\s*s");
rx.indexIn(s);
QString hour = rx.cap(1);
QString min = rx.cap(2);
QString sec = rx.cap(3) + rx.cap(4);
hour.chop(1);
min.chop(1);
return 3600.0 * hour.toUInt() + 60.0 * min.toUInt() + sec.toDouble();
}
QString interval_to_str(double secs)
{
if (secs < 60.0)
return QString("%1s").arg(secs, 0, 'f', 2, QLatin1Char('0'));
QString result;
unsigned rounded = static_cast<unsigned>(round(secs));
bool needs_colon = false;
if (rounded >= 3600) {
result += QString("%1h").arg(rounded / 3600);
rounded %= 3600;
needs_colon = true;
}
if (needs_colon || rounded >= 60) {
if (needs_colon)
result += " ";
result += QString("%1m").arg(rounded / 60, 2, 10, QLatin1Char('0'));
rounded %= 60;
needs_colon = true;
}
if (needs_colon)
result += " ";
result += QString("%1s").arg(rounded, 2, 10, QLatin1Char('0'));
return result;
}
QDateTime convertToLocalTime(QString timestamp)
{
//check if the last character is Z designating the timezone to be UTC
if (timestamp[timestamp.size()-1].toLower()=='z')
{
QDateTime datetime = QDateTime::fromString(timestamp, Qt::ISODate);
datetime.setTimeSpec(Qt::UTC);
datetime=datetime.toLocalTime();
return datetime;
}
//otherwise assume the timestamp is already in local time and simply convert it
//something to add here would be a handler for explicitly set timezones
//ex: 2002-05-30T09:30:10+06:00
//see http://www.w3schools.com/Schema/schema_dtypes_date.asp
//for more on this date format
else
{
return QDateTime::fromString(timestamp);
}
}