CaseViewHelper.php

Go to the documentation of this file.

<?php
 
declare(strict_types=1);
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
namespace ‪TYPO3\CMS\Fluid\ViewHelpers\Format;
 
use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\Exception;
use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
 
final class ‪CaseViewHelper extends AbstractViewHelper
{
    use CompileWithRenderStatic;
 
    public const ‪CASE_LOWER = 'lower';
 
    public const ‪CASE_UPPER = 'upper';
 
    public const ‪CASE_CAPITAL = 'capital';
 
    public const ‪CASE_UNCAPITAL = 'uncapital';
 
    public const ‪CASE_CAPITAL_WORDS = 'capitalWords';
 
    protected ‪$escapeChildren = false;
 
    public function ‪initializeArguments(): void
    {
        $this->registerArgument('value', 'string', 'The input value. If not given, the evaluated child nodes will be used.', false);
        $this->registerArgument('mode', 'string', 'The case to apply, must be one of this\' CASE_* constants. Defaults to uppercase application.', false, self::CASE_UPPER);
    }
 
    public static function ‪renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext): string
    {
        $value = $arguments['value'];
        $mode = $arguments['mode'];
 
        if ($value === null) {
            $value = (string)$renderChildrenClosure();
        }
 
        switch ($mode) {
            case ‪self::CASE_LOWER:
                ‪$output = mb_strtolower($value, 'utf-8');
                break;
            case ‪self::CASE_UPPER:
                ‪$output = mb_strtoupper($value, 'utf-8');
                break;
            case ‪self::CASE_CAPITAL:
                $firstChar = mb_substr($value, 0, 1, 'utf-8');
                $firstChar = mb_strtoupper($firstChar, 'utf-8');
                $remainder = mb_substr($value, 1, null, 'utf-8');
                ‪$output = $firstChar . $remainder;
                break;
            case ‪self::CASE_UNCAPITAL:
                $firstChar = mb_substr($value, 0, 1, 'utf-8');
                $firstChar = mb_strtolower($firstChar, 'utf-8');
                $remainder = mb_substr($value, 1, null, 'utf-8');
                ‪$output = $firstChar . $remainder;
                break;
            case ‪self::CASE_CAPITAL_WORDS:
                ‪$output = mb_convert_case($value, MB_CASE_TITLE, 'utf-8');
                break;
            default:
                throw new Exception('The case mode "' . $mode . '" supplied to Fluid\'s format.case ViewHelper is not supported.', 1358349150);
        }
 
        return ‪$output;
    }
}