CurrencyViewHelper.php

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<?php
namespace TYPO3\CMS\Fluid\ViewHelpers\Format;

/*                                                                        *
 * This script is backported from the TYPO3 Flow package "TYPO3.Fluid".   *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU Lesser General Public License, either version 3   *
 *  of the License, or (at your option) any later version.                *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */

use TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3\CMS\Fluid\Core\ViewHelper\Facets\CompilableInterface;

class CurrencyViewHelper extends AbstractViewHelper implements CompilableInterface
{
    public function render($currencySign = '', $decimalSeparator = ',', $thousandsSeparator = '.', $prependCurrency = false, $separateCurrency = true, $decimals = 2)
    {
        return static::renderStatic(
            array(
                'currencySign' => $currencySign,
                'decimalSeparator' => $decimalSeparator,
                'thousandsSeparator' => $thousandsSeparator,
                'prependCurrency' => $prependCurrency,
                'separateCurrency' => $separateCurrency,
                'decimals' => $decimals
            ),
            $this->buildRenderChildrenClosure(),
            $this->renderingContext
        );
    }

    public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
    {
        $currencySign = $arguments['currencySign'];
        $decimalSeparator = $arguments['decimalSeparator'];
        $thousandsSeparator = $arguments['thousandsSeparator'];
        $prependCurrency = $arguments['prependCurrency'];
        $separateCurrency = $arguments['separateCurrency'];
        $decimals = $arguments['decimals'];

        $floatToFormat = $renderChildrenClosure();
        if (empty($floatToFormat)) {
            $floatToFormat = 0.0;
        } else {
            $floatToFormat = floatval($floatToFormat);
        }
        $output = number_format($floatToFormat, $decimals, $decimalSeparator, $thousandsSeparator);
        if ($currencySign !== '') {
            $currencySeparator = $separateCurrency ? ' ' : '';
            if ($prependCurrency === true) {
                $output = $currencySign . $currencySeparator . $output;
            } else {
                $output = $output . $currencySeparator . $currencySign;
            }
        }
        return $output;
    }
}