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<?php |
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/** |
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* Copyright (C) 2022 Graham Breach |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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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 Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/** |
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* For more information, please contact <graham@goat1000.com> |
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*/ |
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|
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namespace Goat1000\SVGGraph; |
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|
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/** |
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* Class to make start/end times match units |
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*/ |
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class TimeSpanner { |
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|
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private $start_func = 'start_days'; |
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private $end_func = 'end_days'; |
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private $start_time = 0; |
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|
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public function __construct($units) |
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{ |
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switch($units) { |
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case 'minute' : |
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$this->start_func = 'start_minutes'; |
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$this->end_func = 'end_minutes'; |
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break; |
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case 'hour' : |
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$this->start_func = 'start_hours'; |
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$this->end_func = 'end_hours'; |
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break; |
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} |
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} |
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|
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/** |
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* Returns the start time clamped to unit |
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* $d = unix timestamp |
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*/ |
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public function start($d) |
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{ |
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$e = new \DateTime('@' . $d); |
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$this->{$this->start_func}($e); |
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$this->start_time = $e->format('U'); |
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return $this->start_time; |
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} |
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|
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/** |
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* Returns the end time clamped to at least one unit after start |
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* $d = unix timestamp |
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*/ |
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public function end($d) |
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{ |
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if($d < $this->start_time) |
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$d = $this->start_time; |
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|
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$e = new \DateTime('@' . $d); |
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$this->{$this->end_func}($e, $d - $this->start_time); |
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return $e->format('U'); |
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} |
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|
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public function start_minutes(\DateTime $e) |
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{ |
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$h = (int)$e->format('H'); |
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$m = (int)$e->format('i'); |
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$e->setTime($h, $m, 0); |
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} |
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|
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public function end_minutes(\DateTime $e, $diff) |
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{ |
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if($diff < 60) |
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$e->modify('+1 minute'); |
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$h = (int)$e->format('H'); |
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$m = (int)$e->format('i'); |
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$e->setTime($h, $m, 0); |
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|
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// prevent ending at 00:00 on next day |
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if($h == 0 && $m == 0) |
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$e->modify('-1 second'); |
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} |
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|
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public function start_hours(\DateTime $e) |
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{ |
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$h = (int)$e->format('H'); |
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$e->setTime($h, 0, 0); |
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} |
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|
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public function end_hours(\DateTime $e, $diff) |
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{ |
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if($diff < 3600) |
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$e->modify('+1 hour'); |
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$h = (int)$e->format('H'); |
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$e->setTime($h, 0, 0); |
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|
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// prevent ending at 00:00 on next day |
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if($h == 0) |
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$e->modify('-1 second'); |
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} |
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|
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public function start_days(\DateTime $e) |
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{ |
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$e->setTime(0, 0, 0); |
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} |
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|
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public function end_days(\DateTime $e, $diff) |
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{ |
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$e->setTime(23, 59, 59); |
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} |
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|
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} |
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|
