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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the Extension "sf_event_mgt" for TYPO3 CMS. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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*/ |
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namespace DERHANSEN\SfEventMgt\ViewHelpers\Format; |
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use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper; |
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/** |
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* ICalendar Description viewHelper. Note, this ViewHelper does not escape output and should only be used |
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* to process the iCal description field and any other foldable ICal text fields. |
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*/ |
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class ICalendarDescriptionViewHelper extends AbstractViewHelper |
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{ |
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/** |
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* @var bool |
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*/ |
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protected $escapeOutput = false; |
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public function initializeArguments(): void |
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{ |
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parent::initializeArguments(); |
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$this->registerArgument('description', 'string', 'The description', false); |
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$this->registerArgument('substractChars', 'integer', 'Amount of chars to substract from 75 in first line', false, 12); |
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} |
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/** |
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* Formats the given description according to RFC 2445 |
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*/ |
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public function render(): string |
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{ |
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$description = $this->arguments['description'] ?? null; |
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$substractChars = $this->arguments['substractChars'] ?? 0; |
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$firstLineMaxChars = 75 - $substractChars; |
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if ($description === null) { |
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$description = $this->renderChildren(); |
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} |
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$tmpDescription = strip_tags($description); |
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$tmpDescription = str_replace(' ', ' ', $tmpDescription); |
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$tmpDescription = html_entity_decode($tmpDescription); |
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// Replace carriage return |
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$tmpDescription = str_replace(chr(13), '\n\n', $tmpDescription); |
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// Strip new lines |
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$tmpDescription = str_replace(chr(10), '', $tmpDescription); |
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// Glue everything together, so every line is max 75 chars respecting max. length of first line |
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if (mb_strlen($tmpDescription) > $firstLineMaxChars) { |
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$newDescription = mb_substr($tmpDescription, 0, $firstLineMaxChars) . chr(10); |
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$tmpDescription = mb_substr($tmpDescription, $firstLineMaxChars); |
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$arrPieces = mb_str_split($tmpDescription, 75); |
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foreach ($arrPieces as &$value) { |
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$value = ' ' . $value; |
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} |
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$newDescription .= implode(chr(10), $arrPieces); |
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} else { |
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$newDescription = $tmpDescription; |
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} |
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return $newDescription; |
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} |
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} |
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derhansen /
sf_event_mgt
