ds-site/Classes/ViewHelpers/Format/IdViewHelper.php

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<?php
declare(strict_types=1);
/*
* Copyright (C) 2021 Daniel Siepmann <coding@daniel-siepmann.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
namespace DanielSiepmann\DsSite\ViewHelpers\Format;
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use Closure;
use TYPO3\CMS\Core\Utility\GeneralUtility;
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use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithContentArgumentAndRenderStatic;
/**
* Formats a given string to be a valid HTML id attribute value.
*/
class IdViewHelper extends AbstractViewHelper
{
use CompileWithContentArgumentAndRenderStatic;
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public function initializeArguments(): void
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{
$this->registerArgument('value', 'string', 'string to format');
}
public static function renderStatic(
array $arguments,
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Closure $renderChildrenClosure,
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RenderingContextInterface $renderingContext
) {
$value = $renderChildrenClosure();
if (!is_string($value) && !(is_object($value) && method_exists($value, '__toString'))) {
return $value;
}
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$value = (string) $value;
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$value = str_replace(' ', '_', $value);
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$value = preg_replace('#\W#', '', $value) ?? '';
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$value = GeneralUtility::underscoredToUpperCamelCase($value);
$value = lcfirst($value);
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return $value;
}
}