FlexFormService.php

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<?php
namespace TYPO3\CMS\Extbase\Service;

/*
 * 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!
 */

class FlexFormService implements \TYPO3\CMS\Core\SingletonInterface
{
    public function convertFlexFormContentToArray($flexFormContent, $languagePointer = 'lDEF', $valuePointer = 'vDEF')
    {
        $settings = [];
        $flexFormArray = \TYPO3\CMS\Core\Utility\GeneralUtility::xml2array($flexFormContent);
        $flexFormArray = isset($flexFormArray['data']) ? $flexFormArray['data'] : [];
        foreach (array_values($flexFormArray) as $languages) {
            if (!is_array($languages[$languagePointer])) {
                continue;
            }
            foreach ($languages[$languagePointer] as $valueKey => $valueDefinition) {
                if (strpos($valueKey, '.') === false) {
                    $settings[$valueKey] = $this->walkFlexFormNode($valueDefinition, $valuePointer);
                } else {
                    $valueKeyParts = explode('.', $valueKey);
                    $currentNode = &$settings;
                    foreach ($valueKeyParts as $valueKeyPart) {
                        $currentNode = &$currentNode[$valueKeyPart];
                    }
                    if (is_array($valueDefinition)) {
                        if (array_key_exists($valuePointer, $valueDefinition)) {
                            $currentNode = $valueDefinition[$valuePointer];
                        } else {
                            $currentNode = $this->walkFlexFormNode($valueDefinition, $valuePointer);
                        }
                    } else {
                        $currentNode = $valueDefinition;
                    }
                }
            }
        }
        return $settings;
    }

    public function walkFlexFormNode($nodeArray, $valuePointer = 'vDEF')
    {
        if (is_array($nodeArray)) {
            $return = [];
            foreach ($nodeArray as $nodeKey => $nodeValue) {
                if ($nodeKey === $valuePointer) {
                    return $nodeValue;
                }
                if (in_array($nodeKey, ['el', '_arrayContainer'])) {
                    return $this->walkFlexFormNode($nodeValue, $valuePointer);
                }
                if ($nodeKey[0] === '_') {
                    continue;
                }
                if (strpos($nodeKey, '.')) {
                    $nodeKeyParts = explode('.', $nodeKey);
                    $currentNode = &$return;
                    $nodeKeyPartsCount = count($nodeKeyParts);
                    for ($i = 0; $i < $nodeKeyPartsCount - 1; $i++) {
                        $currentNode = &$currentNode[$nodeKeyParts[$i]];
                    }
                    $newNode = [next($nodeKeyParts) => $nodeValue];
                    $currentNode = $this->walkFlexFormNode($newNode, $valuePointer);
                } elseif (is_array($nodeValue)) {
                    if (array_key_exists($valuePointer, $nodeValue)) {
                        $return[$nodeKey] = $nodeValue[$valuePointer];
                    } else {
                        $return[$nodeKey] = $this->walkFlexFormNode($nodeValue, $valuePointer);
                    }
                } else {
                    $return[$nodeKey] = $nodeValue;
                }
            }
            return $return;
        }
        return $nodeArray;
    }
}