1 files changed, 39 insertions, 0 deletions
diff --git a/vendor/maennchen/zipstream-php/src/Time.php b/vendor/maennchen/zipstream-php/src/Time.php
new file mode 100644
index 000000000..1b4121ca9
--- /dev/null
+++ b/vendor/maennchen/zipstream-php/src/Time.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ZipStream;
+
+use DateInterval;
+use DateTimeImmutable;
+use DateTimeInterface;
+use ZipStream\Exception\DosTimeOverflowException;
+
+/**
+ * @internal
+ */
+abstract class Time
+{
+    private const DOS_MINIMUM_DATE = '1980-01-01 00:00:00Z';
+
+    public static function dateTimeToDosTime(DateTimeInterface $dateTime): int
+    {
+        $dosMinimumDate = new DateTimeImmutable(self::DOS_MINIMUM_DATE);
+
+        if ($dateTime->getTimestamp() < $dosMinimumDate->getTimestamp()) {
+            throw new DosTimeOverflowException(dateTime: $dateTime);
+        }
+
+        $dateTime = DateTimeImmutable::createFromInterface($dateTime)->sub(new DateInterval('P1980Y'));
+
+        [$year, $month, $day, $hour, $minute, $second] = explode(' ', $dateTime->format('Y n j G i s'));
+
+        return
+            ((int) $year << 25) |
+            ((int) $month << 21) |
+            ((int) $day << 16) |
+            ((int) $hour << 11) |
+            ((int) $minute << 5) |
+            ((int) $second >> 1);
+    }
+}