core/Classes/Localization/Parser/AbstractXmlParser.php

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<?php
namespace TYPO3\CMS\Core\Localization\Parser;

/*
 * 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!
 */

use TYPO3\CMS\Core\Charset\CharsetConverter;
use TYPO3\CMS\Core\Localization\Exception\FileNotFoundException;
use TYPO3\CMS\Core\Localization\Exception\InvalidXmlFileException;
use TYPO3\CMS\Core\Utility\GeneralUtility;

abstract class AbstractXmlParser implements \TYPO3\CMS\Core\Localization\Parser\LocalizationParserInterface
{
    protected $sourcePath;

    protected $languageKey;

    protected $charset;

    public function getParsedData($sourcePath, $languageKey, $charset = '')
    {
        $this->sourcePath = $sourcePath;
        $this->languageKey = $languageKey;
        $this->charset = $this->getCharset($languageKey, $charset);
        if ($this->languageKey !== 'default') {
            $this->sourcePath = GeneralUtility::getFileAbsFileName(GeneralUtility::llXmlAutoFileName($this->sourcePath, $this->languageKey));
            if (!@is_file($this->sourcePath)) {
                // Global localization is not available, try split localization file
                $this->sourcePath = GeneralUtility::getFileAbsFileName(GeneralUtility::llXmlAutoFileName($sourcePath, $languageKey, true));
            }
            if (!@is_file($this->sourcePath)) {
                throw new FileNotFoundException('Localization file does not exist', 1306332397);
            }
        }
        $LOCAL_LANG = array();
        $LOCAL_LANG[$languageKey] = $this->parseXmlFile();
        return $LOCAL_LANG;
    }

    protected function getCharset($languageKey, $charset = '')
    {
        if (is_object($GLOBALS['LANG'])) {
            $charsetConverter = $GLOBALS['LANG']->csConvObj;
        } elseif (is_object($GLOBALS['TSFE'])) {
            $charsetConverter = $GLOBALS['TSFE']->csConvObj;
        } else {
            $charsetConverter = GeneralUtility::makeInstance(CharsetConverter::class);
        }
        if ($charset !== '') {
            $targetCharset = $charsetConverter->parse_charset($charset);
        } else {
            $targetCharset = 'utf-8';
        }
        return $targetCharset;
    }

    protected function parseXmlFile()
    {
        $rootXmlNode = simplexml_load_file($this->sourcePath, 'SimpleXMLElement', LIBXML_NOWARNING);
        if (!isset($rootXmlNode) || $rootXmlNode === false) {
            throw new InvalidXmlFileException('The path provided does not point to existing and accessible well-formed XML file.', 1278155988);
        }
        return $this->doParsingFromRoot($rootXmlNode);
    }

    abstract protected function doParsingFromRoot(\SimpleXMLElement $root);
}