Issue #3321235 by muriqui, owenbush: Improve iCal line wrapping (a4ce4942) · Commits · project / recurring_events

composer.json

+4 −1

Original line number	Diff line number	Diff line
		@@ -11,6 +11,9 @@
		"source": "http://cgit.drupalcode.org/recurring_events"
		},
		"require": {
		"drupal/field_inheritance": "^1"
		"drupal/field_inheritance": "^2"
		},
		"require-dev": {
		"drupal/token": "^1.11"
		}
		}

modules/recurring_events_ical/src/EventICal.php

+55 −20

Original line number	Diff line number	Diff line
		@@ -5,7 +5,6 @@ namespace Drupal\recurring_events_ical;
		use Drupal\Component\Render\PlainTextOutput;
		use Drupal\Core\Entity\EntityTypeManagerInterface;
		use Drupal\Core\Utility\Token;
		use Drupal\recurring_events\Entity\EventInstance;
		use Drupal\recurring_events\Entity\EventSeries;
		use Drupal\recurring_events\EventInterface;
		use Symfony\Component\HttpFoundation\RequestStack;
		@@ -18,6 +17,7 @@ class EventICal implements EventICalInterface {
		const VERSION = '2.0';
		const PRODID = '-//Drupal//recurring_events_ical//2.0//EN';
		const DATETIMEFORMAT = 'Ymd\THis\Z';
		const LINELENGTH = 75;

		/**
		* The entity type manager service.
		@@ -75,13 +75,17 @@ class EventICal implements EventICalInterface {

		foreach ($instances as $instance) {
		$output[] = 'BEGIN:VEVENT';
		$output[] = 'UID:' . $instance->uuid() . '@' . $this->request->getHost();
		$output[] = $this->prepareValue('UID', $instance->uuid() . '@' . $this->request->getHost());
		$output[] = 'DTSTAMP:' . date(static::DATETIMEFORMAT, $instance->getChangedTime());
		$output[] = 'DTSTART:' . $instance->date->start_date->format(static::DATETIMEFORMAT);
		$output[] = 'DTEND:' . $instance->date->end_date->format(static::DATETIMEFORMAT);
		if ($mapping) {
		foreach ($mapping->getAllProperties() as $property => $value) {
		$value = $this->prepareValue($property, $value, $instance);
		// Process any tokens, removing those that have no replacement.
		$value = $this->token->replace($value, ['eventinstance' => $instance], [
		'clear' => TRUE,
		]);
		$value = $this->prepareValue($property, $value);
		if (!empty($value)) {
		$output[] = $value;
		}
		@@ -90,13 +94,13 @@ class EventICal implements EventICalInterface {
		else {
		// The summary is required, so if there's no mapping in place, default
		// to the event label.
		$output[] = 'SUMMARY:' . $instance->label();
		$output[] = $this->prepareValue('SUMMARY', $instance->label());
		}
		$output[] = 'END:VEVENT';
		}

		$output[] = 'END:VCALENDAR';
		return implode("\n", $output);
		return implode("\r\n", $output);
		}

		/**
		@@ -106,18 +110,11 @@ class EventICal implements EventICalInterface {
		* The property name.
		* @param string $value
		* The raw value.
		* @param \Drupal\recurring_events\Entity\EventInstance $instance
		* The event instance.
		*
		* @return string
		* The sanitized value.
		* The property and sanitized value, formatted as required by RFC 5545.
		*/
		protected function prepareValue(string $property, string $value, EventInstance $instance): string {
		// Process any tokens, removing any that have no replacement.
		$value = $this->token->replace($value, ['eventinstance' => $instance], [
		'clear' => TRUE,
		]);

		protected function prepareValue(string $property, string $value): string {
		// Sanitize twice to ensure that all tags and HTML codes are removed. For
		// example, if the value came in as "<p>Hello,'World!</p>",
		// the first pass would return "<p>Hello, World!</p>" and the second
		@@ -129,13 +126,51 @@ class EventICal implements EventICalInterface {
		if (empty($value)) {
		return '';
		}
		$value = strtoupper($property) . ':' . $value;

		// Change all existing line endings to literal \n.
		$value = str_replace(["\r\n", "\n\r", "\r", "\n"], '\n', $value);

		// RFC 5545 3.1 requires lines longer than 75 bytes to be wrapped with CRLF
		// followed by a single space.
		$wrapped = [];
		// Remember: strlen() counts bytes, not characters.
		while (strlen($value) > static::LINELENGTH) {
		// Grab a chunk up to line length, without splitting multibyte characters.
		$chunk = $this->cut($value, 0, static::LINELENGTH, 'UTF-8');
		$wrapped[] = $chunk;
		// The required space after the CRLF counts against the line length, so
		// add it to the front of the remaining text for the next loop.
		$value = ' ' . $this->cut($value, strlen($chunk), NULL, 'UTF-8');
		}
		// $value now contains whatever is left on the last line after wrapping.
		$wrapped[] = $value;

		// RFC 5545 3.1 requires lines longer than 75 characters (including the
		// property name and line break characters) to be wrapped with CRLF followed
		// by a single space, which will be ignored on import. We include an
		// additional space so that the words before and after the break don't run
		// together when recomposed.
		return wordwrap(strtoupper($property) . ':' . $value, 71, "\r\n ", TRUE);
		return implode("\r\n", $wrapped);
		}

		/**
		* Wrapper for mb_strcut because Symfony's Mbstring polyfill doesn't have it.
		*
		* @param string $string
		* The string being cut.
		* @param int $start
		* The start position in bytes.
		* @param int\|null $length
		* The length of the cut in bytes. If NULL, runs to the end of the string.
		* @param string\|null $encoding
		* The character encoding.
		*
		* @return string
		* The portion of $string specified by the start and length parameters.
		*
		* @see mb_strcut()
		*/
		protected function cut(string $string, int $start, ?int $length = NULL, ?string $encoding = NULL): string {
		if (function_exists('mb_strcut')) {
		return mb_strcut($string, $start, $length, $encoding);
		}
		return substr($string, $start, $length);
		}

		}

modules/recurring_events_ical/tests/src/Kernel/EventICalTest.php

0 → 100644

+216 −0

Original line number	Diff line number	Diff line
		<?php

		namespace Drupal\Tests\recurring_events_ical\Kernel;

		use Drupal\Core\Datetime\DrupalDateTime;
		use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
		use Drupal\KernelTests\KernelTestBase;
		use Drupal\recurring_events\Entity\EventSeries;

		/**
		* @coversDefaultClass \Drupal\recurring_events_ical\EventICal
		* @group recurring_events_ical
		*/
		class EventICalTest extends KernelTestBase {

		/**
		* {@inheritdoc}
		*/
		protected static $modules = [
		'datetime',
		'datetime_range',
		'field',
		'field_inheritance',
		'options',
		'recurring_events',
		'recurring_events_ical',
		'system',
		'text',
		'token',
		'user',
		];

		/**
		* {@inheritdoc}
		*/
		protected static $configSchemaCheckerExclusions = [
		'core.entity_view_display.eventseries.default.default',
		'core.entity_view_display.eventseries.default.list',
		'core.entity_view_display.eventinstance.default.default',
		'core.entity_view_display.eventinstance.default.list',
		];

		/**
		* The service under test.
		*
		* @var \Drupal\recurring_events_ical\EventICalInterface
		*/
		protected $eventICal;

		/**
		* The entity type manager.
		*
		* @var \Drupal\Core\Entity\EntityTypeManagerInterface
		*/
		protected $entityTypeManager;

		/**
		* {@inheritdoc}
		*/
		protected function setUp(): void {
		parent::setUp();

		$this->installEntitySchema('field_inheritance');
		$this->installEntitySchema('eventseries_type');
		$this->installEntitySchema('eventinstance_type');
		$this->installEntitySchema('eventseries');
		$this->installEntitySchema('eventinstance');
		$this->installEntitySchema('event_ical_mapping');
		$this->installEntitySchema('user');
		$this->installConfig([
		'field_inheritance',
		'recurring_events',
		'recurring_events_ical',
		'datetime',
		'system',
		'user',
		]);

		$this->eventICal = $this->container->get('recurring_events_ical.event_ical');
		$this->entityTypeManager = $this->container->get('entity_type.manager');
		}

		/**
		* Tests EventICal::render() for basic values.
		*/
		public function testRenderBasic() {
		$event = $this->createEventSeries(
		'Test event with a title that is longer than 75 characters. Seriously, it just keeps going and going.',
		[
		[
		'start' => '2022-01-01 00:00:00',
		'end' => '2022-01-01 00:30:00',
		],
		]
		);

		$iCal = explode("\r\n", $this->eventICal->render($event));
		$this->assertPreamble($iCal);
		$this->assertSame('DTSTART:20220101T000000Z', $iCal[6]);
		$this->assertSame('DTEND:20220101T003000Z', $iCal[7]);
		$this->assertSame('SUMMARY:Test event with a title that is longer than 75 characters. Seriousl', $iCal[8]);
		$this->assertSame(' y, it just keeps going and going.', $iCal[9]);
		$this->assertSame('END:VEVENT', $iCal[10]);
		$this->assertSame('END:VCALENDAR', $iCal[11]);
		}

		/**
		* Tests EventICal::render() for mapped token values.
		*/
		public function testRenderMapped() {
		$event = $this->createEventSeries(
		'Mapped event series',
		[
		[
		'start' => '2022-01-01 00:00:00',
		'end' => '2022-01-01 00:30:00',
		],
		],
		"<h2>Agenda</h2>\n\n<ul>\n\t<li>Talk about a lot of boring things</li>\n<li>Talk about more boring things</li>\n<li>Pizza</li>\n</ul>"
		);

		$mapping = $this->entityTypeManager->getStorage('event_ical_mapping')->create([
		'id' => 'default',
		'label' => 'Default',
		'properties' => [
		'summary' => '[eventinstance:title]',
		'contact' => 'That Guy',
		'description' => '[eventinstance:description]',
		'geo' => '12.34;56.78',
		'location' => 'Conference Room',
		'priority' => '1',
		'url' => '[eventinstance:url]',
		],
		]);
		$mapping->save();

		$iCal = explode("\r\n", $this->eventICal->render($event));
		$this->assertPreamble($iCal);
		$this->assertSame('DTSTART:20220101T000000Z', $iCal[6]);
		$this->assertSame('DTEND:20220101T003000Z', $iCal[7]);
		$this->assertSame('SUMMARY:Mapped event series', $iCal[8]);
		$this->assertSame('CONTACT:That Guy', $iCal[9]);
		$this->assertSame('DESCRIPTION:Agenda\n\n\n' . "\t" . 'Talk about a lot of boring things\nTalk about more', $iCal[10]);
		$this->assertSame(' boring things\nPizza', $iCal[11]);
		$this->assertSame('GEO:12.34;56.78', $iCal[12]);
		$this->assertSame('LOCATION:Conference Room', $iCal[13]);
		$this->assertSame('PRIORITY:1', $iCal[14]);
		$this->assertMatchesRegularExpression('~URL:(http\|https)://(.+)/events/([0-9]+)~', $iCal[15]);
		$this->assertSame('END:VEVENT', $iCal[16]);
		$this->assertSame('END:VCALENDAR', $iCal[17]);
		}

		/**
		* Creates an event series for use in a test.
		*
		* @param string $title
		* The series title.
		* @param array $dates
		* An array of event start/end dates in the format: [
		* [
		* 'start' => 'YYYY-MM-DD HH:MM:SS',
		* 'end' => 'YYYY-MM-DD HH:MM:SS',
		* ],
		* ...
		* ].
		* @param string $body
		* (optional) The event's body text.
		*
		* @return \Drupal\recurring_events\Entity\EventSeries
		* The event series.
		*
		* @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
		* @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
		* @throws \Drupal\Core\Entity\EntityStorageException
		*/
		protected function createEventSeries(string $title, array $dates, string $body = ''): EventSeries {
		$customDates = [];
		foreach ($dates as $date) {
		$start = new DrupalDateTime($date['start']);
		$end = new DrupalDateTime($date['end']);
		$customDates[] = [
		'value' => $start->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT),
		'end_value' => $end->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT),
		];
		}

		/** @var \Drupal\recurring_events\Entity\EventSeries $event */
		$event = $this->entityTypeManager->getStorage('eventseries')->create([
		'title' => $title,
		'uid' => 1,
		'type' => 'default',
		'recur_type' => 'custom',
		'custom_date' => $customDates,
		'body' => $body,
		]);
		$event->save();

		return $event;
		}

		/**
		* Asserts that the first six lines of iCal data are correct.
		*
		* @param array $iCal
		* The iCal rendering exploded as an array.
		*/
		protected function assertPreamble(array $iCal) {
		$this->assertSame('BEGIN:VCALENDAR', $iCal[0]);
		$this->assertSame('VERSION:2.0', $iCal[1]);
		$this->assertSame('PRODID:-//Drupal//recurring_events_ical//2.0//EN', $iCal[2]);
		$this->assertSame('BEGIN:VEVENT', $iCal[3]);
		$this->assertMatchesRegularExpression('/UID:([a-z0-9\-]+)@(.+)/', $iCal[4]);
		$this->assertMatchesRegularExpression('/DTSTAMP:([0-9]{8})T([0-9]{6})Z/', $iCal[5]);
		}

		}