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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Xparse\Parser\Helper;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use DOMNodeList;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Psr7\Uri;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Psr7\UriResolver;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Xparse\ElementFinder\DomNodeListAction\DomNodeListActionInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @internal  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Ivan Shcherbak <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class ConvertUrlElementFinderModifier implements DomNodeListActionInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $affectedUrl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $baseUrl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(string $affectedUrl, string $baseUrl)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->affectedUrl = $affectedUrl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->baseUrl = $baseUrl;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    final public function execute(DOMNodeList $nodeList): void  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $affected = new Uri($this->affectedUrl);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        foreach ($nodeList as $element) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            /** @var \DOMElement $element */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $attribute = $this->attributeName($element);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $relative = $element->getAttribute($attribute);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $isValid = parse_url($relative) !== false;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            if (  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $isValid  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                &&  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                !preg_match('!^\s*javascript\s*:\s*!', $relative) | 
            
            
                                                                        
                            
            
                                    
            
            
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                            ) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                if ($this->baseUrl !== '' && !preg_match('!^(/|http)!i', $relative)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    $relative = UriResolver::resolve(new Uri($this->baseUrl), new Uri($relative));  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $url = UriResolver::resolve($affected, new Uri($relative));  | 
            
                            
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                                /** @noinspection UnusedFunctionResultInspection */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $element->setAttribute($attribute, (string)$url);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function attributeName(\DOMElement $element): string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $name = 'href';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($element->tagName === 'form' && $element->hasAttribute('action') === true) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $name = 'action';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else if ($element->hasAttribute('src') === true) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $name = 'src';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $name;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                        
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
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