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feat: OCC and OCS Calendar Import/Export
Signed-off-by: SebastianKrupinski <krupinskis05@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| <?php | ||
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| declare(strict_types=1); | ||
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| /** | ||
| * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors | ||
| * SPDX-License-Identifier: AGPL-3.0-or-later | ||
| */ | ||
| namespace OCA\DAV\CalDAV\Export; | ||
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| use Generator; | ||
| use OCP\Calendar\CalendarExportOptions; | ||
| use OCP\Calendar\ICalendar; | ||
| use OCP\Calendar\ICalendarExport; | ||
| use Sabre\VObject\Component; | ||
| use Sabre\VObject\Writer; | ||
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| /** | ||
| * Calendar Export Service | ||
| * | ||
| * @since 32.0.0 | ||
| */ | ||
| class ExportService { | ||
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| public const FORMATS = ['ical', 'jcal', 'xcal']; | ||
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| public function __construct() { | ||
| } | ||
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| /** | ||
| * Generates serialized content stream for a calendar and objects based in selected format | ||
| * | ||
| * @since 32.0.0 | ||
| */ | ||
| public function export(ICalendar&ICalendarExport $calendar, CalendarExportOptions $options): Generator { | ||
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| yield $this->exportStart($options->format); | ||
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| // iterate through each returned vCalendar entry | ||
| // extract each component except timezones, convert to appropriate format and output | ||
| // extract any timezones and save them but do not output | ||
| $timezones = []; | ||
| foreach ($calendar->export($options) as $entry) { | ||
| $consecutive = false; | ||
| foreach ($entry->getComponents() as $vComponent) { | ||
| if ($vComponent->name === 'VTIMEZONE') { | ||
| if (isset($vComponent->TZID) && !isset($timezones[$vComponent->TZID->getValue()])) { | ||
| $timezones[$vComponent->TZID->getValue()] = clone $vComponent; | ||
| } | ||
| } else { | ||
| yield $this->exportObject($vComponent, $options->format, $consecutive); | ||
| $consecutive = true; | ||
| } | ||
| } | ||
| } | ||
| // iterate through each vTimezone entry, convert to appropriate format and output | ||
| foreach ($timezones as $vComponent) { | ||
| yield $this->exportObject($vComponent, $options->format, $consecutive); | ||
| $consecutive = true; | ||
| } | ||
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| yield $this->exportFinish($options->format); | ||
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| } | ||
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| /** | ||
| * Generates serialized content start based on selected format | ||
| * | ||
| * @since 32.0.0 | ||
| */ | ||
| private function exportStart(string $format): string { | ||
| return match ($format) { | ||
| 'jcal' => '["vcalendar",[["version",{},"text","2.0"],["prodid",{},"text","-\/\/IDN nextcloud.com\/\/Calendar App\/\/EN"]],[', | ||
| 'xcal' => '<?xml version="1.0" encoding="UTF-8"?><icalendar xmlns="urn:ietf:params:xml:ns:icalendar-2.0"><vcalendar><properties><version><text>2.0</text></version><prodid><text>-//IDN nextcloud.com//Calendar App//EN</text></prodid></properties><components>', | ||
| default => "BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:-//IDN nextcloud.com//Calendar App//EN\n" | ||
| }; | ||
| } | ||
|
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| /** | ||
| * Generates serialized content end based on selected format | ||
| * | ||
| * @since 32.0.0 | ||
| */ | ||
| private function exportFinish(string $format): string { | ||
| return match ($format) { | ||
| 'jcal' => ']]', | ||
| 'xcal' => '</components></vcalendar></icalendar>', | ||
| default => "END:VCALENDAR\n" | ||
| }; | ||
| } | ||
|
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| /** | ||
| * Generates serialized content for a component based on selected format | ||
| * | ||
| * @since 32.0.0 | ||
| */ | ||
| private function exportObject(Component $vobject, string $format, bool $consecutive): string { | ||
| return match ($format) { | ||
| 'jcal' => $consecutive ? ',' . Writer::writeJson($vobject) : Writer::writeJson($vobject), | ||
| 'xcal' => $this->exportObjectXml($vobject), | ||
| default => Writer::write($vobject) | ||
| }; | ||
| } | ||
|
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| /** | ||
| * Generates serialized content for a component in xml format | ||
| * | ||
| * @since 32.0.0 | ||
| */ | ||
| private function exportObjectXml(Component $vobject): string { | ||
| $writer = new \Sabre\Xml\Writer(); | ||
| $writer->openMemory(); | ||
| $writer->setIndent(false); | ||
| $vobject->xmlSerialize($writer); | ||
| return $writer->outputMemory(); | ||
| } | ||
|
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| } |
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