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-rw-r--r--vendor/sabre/vobject/lib/TimezoneGuesser/FindFromOffset.php31
1 files changed, 31 insertions, 0 deletions
diff --git a/vendor/sabre/vobject/lib/TimezoneGuesser/FindFromOffset.php b/vendor/sabre/vobject/lib/TimezoneGuesser/FindFromOffset.php
new file mode 100644
index 000000000..990ac9692
--- /dev/null
+++ b/vendor/sabre/vobject/lib/TimezoneGuesser/FindFromOffset.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sabre\VObject\TimezoneGuesser;
+
+use DateTimeZone;
+
+/**
+ * Some clients add 'X-LIC-LOCATION' with the olson name.
+ */
+class FindFromOffset implements TimezoneFinder
+{
+ public function find(string $tzid, bool $failIfUncertain = false): ?DateTimeZone
+ {
+ // Maybe the author was hyper-lazy and just included an offset. We
+ // support it, but we aren't happy about it.
+ if (preg_match('/^GMT(\+|-)([0-9]{4})$/', $tzid, $matches)) {
+ // Note that the path in the source will never be taken from PHP 5.5.10
+ // onwards. PHP 5.5.10 supports the "GMT+0100" style of format, so it
+ // already gets returned early in this function. Once we drop support
+ // for versions under PHP 5.5.10, this bit can be taken out of the
+ // source.
+ // @codeCoverageIgnoreStart
+ return new DateTimeZone('Etc/GMT'.$matches[1].ltrim(substr($matches[2], 0, 2), '0'));
+ // @codeCoverageIgnoreEnd
+ }
+
+ return null;
+ }
+}