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<?php
namespace Cron;
use DateTime;
use DateTimeZone;
/**
* Hours field. Allows: * , / -
*/
class HoursField extends AbstractField
{
public function isSatisfiedBy(DateTime $date, $value)
{
return $this->isSatisfied($date->format('H'), $value);
}
public function increment(DateTime $date, $invert = false, $parts = null)
{
// Change timezone to UTC temporarily. This will
// allow us to go back or forwards and hour even
// if DST will be changed between the hours.
if (is_null($parts) || $parts == '*') {
$timezone = $date->getTimezone();
$date->setTimezone(new DateTimeZone('UTC'));
if ($invert) {
$date->modify('-1 hour');
} else {
$date->modify('+1 hour');
}
$date->setTimezone($timezone);
$date->setTime($date->format('H'), $invert ? 59 : 0);
return $this;
}
$parts = strpos($parts, ',') !== false ? explode(',', $parts) : array($parts);
$hours = array();
foreach ($parts as $part) {
$hours = array_merge($hours, $this->getRangeForExpression($part, 23));
}
$current_hour = $date->format('H');
$position = $invert ? count($hours) - 1 : 0;
if (count($hours) > 1) {
for ($i = 0; $i < count($hours) - 1; $i++) {
if ((!$invert && $current_hour >= $hours[$i] && $current_hour < $hours[$i + 1]) ||
($invert && $current_hour > $hours[$i] && $current_hour <= $hours[$i + 1])) {
$position = $invert ? $i : $i + 1;
break;
}
}
}
$hour = $hours[$position];
if ((!$invert && $date->format('H') >= $hour) || ($invert && $date->format('H') <= $hour)) {
$date->modify(($invert ? '-' : '+') . '1 day');
$date->setTime($invert ? 23 : 0, $invert ? 59 : 0);
}
else {
$date->setTime($hour, $invert ? 59 : 0);
}
return $this;
}
public function validate($value)
{
return (bool) preg_match('/^[\*,\/\-0-9]+$/', $value);
}
}