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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of Symplify  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (c) 2016 Tomas Votruba (http://tomasvotruba.cz).  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Symplify\PHP7_CodeSniffer\Standard\Finder;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Finder\Finder;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symplify\PHP7_CodeSniffer\Composer\VendorDirProvider;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symplify\PHP7_CodeSniffer\Exception\Configuration\OptionResolver\StandardNotFoundException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                final class StandardFinder  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string[]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $rulesets = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string[] $names  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string[]  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function getRulesetPathsForStandardNames(array $names) : array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $rulesetPaths = [];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        foreach ($names as $name) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $rulesetPaths[$name] = $this->getRulesetPathForStandardName($name);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $rulesetPaths;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getRulesetPathForStandardName(string $standardName) : string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (isset($this->getStandards()[$standardName])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $this->getStandards()[$standardName];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        throw new StandardNotFoundException(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Standard "%s" was not found. Found standards are: %s.',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $standardName,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                implode($this->getRulesetNames(), ', ')  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string[]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getStandards() : array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($this->rulesets) { | 
            
                            
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                            return $this->rulesets;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($this->findRulesetFiles() as $rulesetFile) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $rulesetXml = simplexml_load_file($rulesetFile);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $rulesetName = (string) $rulesetXml['name'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->rulesets[$rulesetName] = $rulesetFile;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->rulesets;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string[]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function findRulesetFiles() : array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $installedStandards = (new Finder())->files()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->in(VendorDirProvider::provide())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->name('ruleset.xml'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array_keys(iterator_to_array($installedStandards));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function getRulesetNames() : array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array_keys($this->getStandards());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.