94 lines
2.6 KiB
PHP
94 lines
2.6 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2013 - (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*/
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use oat\tao\helpers\DateIntervalMS;
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/**
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* Helps you to manipulate durations.
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*
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* @author Bertrand Chevrier <bertrand@taotesting.com>
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* @package tao
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*/
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class tao_helpers_Duration
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{
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/**
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* Converts a time string to an ISO8601 duration
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* @param string $time as hh:mm:ss.micros
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* @return string the ISO duration
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*/
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public static function timetoDuration($time)
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{
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$duration = 'PT';
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$regexp = "/^([0-9]{2}):([0-9]{2}):([0-9]{2})(\.[0-9]{1,6})?$/";
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if (preg_match($regexp, $time, $matches)) {
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$duration .= intval($matches[1]) . 'H' . intval($matches[2]) . 'M';
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$duration .= isset($matches[4])
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? intval($matches[3]) . $matches[4] . 'S'
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: intval($matches[3]) . 'S';
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} else {
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$duration .= '0S';
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}
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return $duration;
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}
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/**
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* Converts an interval to a time
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* @param DateInterval $interval
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* @return string time hh:mm:ss
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*/
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public static function intervalToTime(DateInterval $interval)
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{
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$time = null;
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if (!is_null($interval)) {
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$format = property_exists(get_class($interval), 'u') ? '%H:%I:%S.%U' : '%H:%I:%S';
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$time = $interval->format($format);
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}
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return $time;
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}
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/**
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* Converts a duration to a time
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* @param string $duration the ISO duration
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* @return string time hh:mm:ss.micros
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*/
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public static function durationToTime($duration)
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{
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$time = null;
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try {
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$interval = preg_match('/(\.[0-9]{1,6}S)$/', $duration)
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? new DateIntervalMS($duration)
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: new DateInterval($duration);
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$time = self::intervalToTime($interval);
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} catch (Exception $e) {
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common_Logger::e($e->getMessage());
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}
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return $time;
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}
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}
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