64 lines
1.7 KiB
PHP
64 lines
1.7 KiB
PHP
<?php
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namespace FluidTYPO3\Vhs\ViewHelpers\Render;
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/*
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* This file is part of the FluidTYPO3/Vhs project under GPLv2 or later.
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*
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* For the full copyright and license information, please read the
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* LICENSE.md file that was distributed with this source code.
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*/
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use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
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/**
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* ### Render: ASCII Character
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*
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* Renders a single character identified by its charset number.
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*
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* For example: `<v:render.character ascii="10" /> renders a UNIX linebreak
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* as does {v:render.character(ascii: 10)}. Can be used in combination with
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* `v:iterator.loop` to render sequences or repeat the same character:
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*
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* {v:render.ascii(ascii: 10) -> v:iterator.loop(count: 5)}
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*
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* And naturally you can feed any integer variable or ViewHelper return value
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* into the `ascii` parameter throught `renderChildren` to allow chaining:
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*
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* {variableWithAsciiInteger -> v:render.ascii()}
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*
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* And arrays are also supported - they will produce a string of characters
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* from each number in the array:
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*
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* {v:render.ascii(ascii: {0: 13, 1: 10})}
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*
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* Will produce a Windows line break, \r\n
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*
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* @author Claus Due <claus@namelesscoder.net>
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* @package Vhs
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* @subpackage ViewHelpers\Render
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*/
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class AsciiViewHelper extends AbstractViewHelper {
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/**
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* @param mixed $ascii
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* @return string
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*/
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public function render($ascii = NULL) {
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if (NULL === $ascii) {
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$ascii = $this->renderChildren();
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}
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if (TRUE === is_numeric($ascii)) {
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return chr((integer) $ascii);
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}
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if (TRUE === is_array($ascii) || TRUE === $ascii instanceof \Traversable) {
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$string = '';
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foreach ($ascii as $characterNumber) {
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$string .= chr($characterNumber);
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}
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return $string;
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}
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return '';
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}
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}
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