initial sabre upgrade (needs lots of work - to wit: authentication, redo the browser interface, and rework event export/import)

1 files changed, 156 insertions, 0 deletions

diff --git a/vendor/sabre/vobject/lib/Component/VAvailability.php b/vendor/sabre/vobject/lib/Component/VAvailability.php
new file mode 100644
index 000000000..66b3310c5
--- /dev/null
+++ b/vendor/sabre/vobject/lib/Component/VAvailability.php
@@ -0,0 +1,156 @@
+<?php
+
+namespace Sabre\VObject\Component;
+
+use DateTimeInterface;
+use Sabre\VObject;
+
+/**
+ * The VAvailability component.
+ *
+ * This component adds functionality to a component, specific for VAVAILABILITY
+ * components.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Ivan Enderlin
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class VAvailability extends VObject\Component {
+
+    /**
+     * Returns true or false depending on if the event falls in the specified
+     * time-range. This is used for filtering purposes.
+     *
+     * The rules used to determine if an event falls within the specified
+     * time-range is based on:
+     *
+     * https://tools.ietf.org/html/draft-daboo-calendar-availability-05#section-3.1
+     *
+     * @param DateTimeInterface $start
+     * @param DateTimeInterface $end
+     *
+     * @return bool
+     */
+    function isInTimeRange(DateTimeInterface $start, DateTimeInterface $end) {
+
+        list($effectiveStart, $effectiveEnd) = $this->getEffectiveStartEnd();
+        return (
+            (is_null($effectiveStart) || $start < $effectiveEnd) &&
+            (is_null($effectiveEnd) || $end > $effectiveStart)
+        );
+
+    }
+
+    /**
+     * Returns the 'effective start' and 'effective end' of this VAVAILABILITY
+     * component.
+     *
+     * We use the DTSTART and DTEND or DURATION to determine this.
+     *
+     * The returned value is an array containing DateTimeImmutable instances.
+     * If either the start or end is 'unbounded' its value will be null
+     * instead.
+     *
+     * @return array
+     */
+    function getEffectiveStartEnd() {
+
+        $effectiveStart = null;
+        $effectiveEnd = null;
+
+        if (isset($this->DTSTART)) {
+            $effectiveStart = $this->DTSTART->getDateTime();
+        }
+        if (isset($this->DTEND)) {
+            $effectiveEnd = $this->DTEND->getDateTime();
+        } elseif ($effectiveStart && isset($this->DURATION)) {
+            $effectiveEnd = $effectiveStart->add(VObject\DateTimeParser::parseDuration($this->DURATION));
+        }
+
+        return [$effectiveStart, $effectiveEnd];
+
+    }
+
+
+    /**
+     * A simple list of validation rules.
+     *
+     * This is simply a list of properties, and how many times they either
+     * must or must not appear.
+     *
+     * Possible values per property:
+     *   * 0 - Must not appear.
+     *   * 1 - Must appear exactly once.
+     *   * + - Must appear at least once.
+     *   * * - Can appear any number of times.
+     *   * ? - May appear, but not more than once.
+     *
+     * @var array
+     */
+    function getValidationRules() {
+
+        return [
+            'UID'     => 1,
+            'DTSTAMP' => 1,
+
+            'BUSYTYPE'      => '?',
+            'CLASS'         => '?',
+            'CREATED'       => '?',
+            'DESCRIPTION'   => '?',
+            'DTSTART'       => '?',
+            'LAST-MODIFIED' => '?',
+            'ORGANIZER'     => '?',
+            'PRIORITY'      => '?',
+            'SEQUENCE'      => '?',
+            'SUMMARY'       => '?',
+            'URL'           => '?',
+            'DTEND'         => '?',
+            'DURATION'      => '?',
+
+            'CATEGORIES' => '*',
+            'COMMENT'    => '*',
+            'CONTACT'    => '*',
+        ];
+
+    }
+
+    /**
+     * Validates the node for correctness.
+     *
+     * The following options are supported:
+     *   Node::REPAIR - May attempt to automatically repair the problem.
+     *   Node::PROFILE_CARDDAV - Validate the vCard for CardDAV purposes.
+     *   Node::PROFILE_CALDAV - Validate the iCalendar for CalDAV purposes.
+     *
+     * This method returns an array with detected problems.
+     * Every element has the following properties:
+     *
+     *  * level - problem level.
+     *  * message - A human-readable string describing the issue.
+     *  * node - A reference to the problematic node.
+     *
+     * The level means:
+     *   1 - The issue was repaired (only happens if REPAIR was turned on).
+     *   2 - A warning.
+     *   3 - An error.
+     *
+     * @param int $options
+     *
+     * @return array
+     */
+    function validate($options = 0) {
+
+        $result = parent::validate($options);
+
+        if (isset($this->DTEND) && isset($this->DURATION)) {
+            $result[] = [
+                'level'   => 3,
+                'message' => 'DTEND and DURATION cannot both be present',
+                'node'    => $this
+            ];
+        }
+
+        return $result;
+
+    }
+}