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<?php declare(strict_types=1);
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/*
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 * This file is part of PHPUnit.
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 *
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 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace PHPUnit\Util\Xml;
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use function chdir;
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use function dirname;
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use function error_reporting;
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use function file_get_contents;
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use function getcwd;
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use function libxml_get_errors;
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use function libxml_use_internal_errors;
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use function sprintf;
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use DOMDocument;
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/**
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 * @internal This class is not covered by the backward compatibility promise for PHPUnit
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 */
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final class Loader
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{
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    /**
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     * @throws Exception
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     */
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    public function loadFile(string $filename, bool $isHtml = false, bool $xinclude = false, bool $strict = false): DOMDocument
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    {
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        $reporting = error_reporting(0);
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        $contents  = file_get_contents($filename);
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        error_reporting($reporting);
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        if ($contents === false) {
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            throw new Exception(
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                sprintf(
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                    'Could not read "%s".',
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                    $filename
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                )
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            );
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        }
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        return $this->load($contents, $isHtml, $filename, $xinclude, $strict);
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    }
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    /**
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     * @throws Exception
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     */
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    public function load(string $actual, bool $isHtml = false, string $filename = '', bool $xinclude = false, bool $strict = false): DOMDocument
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    {
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        if ($actual === '') {
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            throw new Exception('Could not load XML from empty string');
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        }
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        // Required for XInclude on Windows.
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        if ($xinclude) {
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            $cwd = getcwd();
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            @chdir(dirname($filename));
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        }
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        $document                     = new DOMDocument;
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        $document->preserveWhiteSpace = false;
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        $internal  = libxml_use_internal_errors(true);
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        $message   = '';
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        $reporting = error_reporting(0);
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        if ($filename !== '') {
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            // Required for XInclude
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            $document->documentURI = $filename;
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        }
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        if ($isHtml) {
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            $loaded = $document->loadHTML($actual);
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        } else {
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            $loaded = $document->loadXML($actual);
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        }
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        if (!$isHtml && $xinclude) {
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            $document->xinclude();
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        }
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        foreach (libxml_get_errors() as $error) {
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            $message .= "\n" . $error->message;
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        }
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        libxml_use_internal_errors($internal);
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        error_reporting($reporting);
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        if (isset($cwd)) {
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            @chdir($cwd);
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        }
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        if ($loaded === false || ($strict && $message !== '')) {
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            if ($filename !== '') {
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                throw new Exception(
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                    sprintf(
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                        'Could not load "%s".%s',
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                        $filename,
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                        $message !== '' ? "\n" . $message : ''
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                    )
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                );
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            }
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            if ($message === '') {
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                $message = 'Could not load XML for unknown reason';
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            }
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            throw new Exception($message);
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        }
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        return $document;
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    }
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}