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Arsse/lib/Misc/Date.php
2020-12-08 15:34:31 -05:00

41 lines
1.4 KiB
PHP

<?php
/** @license MIT
* Copyright 2017 J. King, Dustin Wilson et al.
* See LICENSE and AUTHORS files for details */
declare(strict_types=1);
namespace JKingWeb\Arsse\Misc;
abstract class Date {
public static function transform($date, string $outFormat = null, string $inFormat = null) {
$date = ValueInfo::normalize($date, ValueInfo::T_DATE, $inFormat);
if (!$date) {
return null;
}
$out = ValueInfo::normalize($date, ValueInfo::T_STRING, null, $outFormat);
if ($outFormat === "unix") {
$out = (int) $out;
} elseif ($outFormat === "float") {
$out = (float) $out;
}
return $out;
}
public static function normalize($date, string $inFormat = null): ?\DateTimeImmutable {
return ValueInfo::normalize($date, ValueInfo::T_DATE, $inFormat);
}
public static function add($interval, $date = "now"): ?\DateTimeImmutable {
return self::modify("add", $interval, $date);
}
public static function sub($interval, $date = "now"): ?\DateTimeImmutable {
return self::modify("sub", $interval, $date);
}
protected static function modify(string $func, $interval, $date): ?\DateTimeImmutable {
$date = self::normalize($date);
$interval = (!$interval instanceof \DateInterval) ? ValueInfo::normalize($interval, ValueInfo::T_INTERVAL) : $interval;
return $date ? $date->$func($interval) : null;
}
}