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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of graze/data-file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (c) 2016 Nature Delivered Ltd. <https://www.graze.com>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                 * @license https://github.com/graze/data-file/blob/master/LICENSE.md  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @link    https://github.com/graze/data-file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Graze\DataFile\Modify\Encoding;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Graze\DataFile\Helper\OptionalLoggerTrait;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Graze\DataFile\Helper\Process\ProcessFactoryAwareInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Graze\DataFile\Helper\Process\ProcessTrait;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Graze\DataFile\Modify\FileModifierInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Graze\DataFile\Node\FileNodeInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Graze\DataFile\Node\LocalFileNodeInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use InvalidArgumentException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Log\LoggerAwareInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Log\LogLevel;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Process\Exception\ProcessFailedException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class FindEncoding implements ProcessFactoryAwareInterface, LoggerAwareInterface, FileModifierInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    use ProcessTrait;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    use OptionalLoggerTrait;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Find the Encoding of a specified file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param LocalFileNodeInterface $file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return null|string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws ProcessFailedException  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function getEncoding(LocalFileNodeInterface $file)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $cmd = "file --brief --uncompress --mime {$file->getPath()}"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $process = $this->getProcess($cmd);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $process->mustRun();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $result = $process->getOutput();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (preg_match('/charset=([^\s]+)/i', $result, $matches)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->log(LogLevel::DEBUG, "Found the encoding for '{file}' as '{encoding}'", [ | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'file'     => $file,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'encoding' => $matches[1],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            return $matches[1];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return null;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Can this file be modified by this modifier  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param FileNodeInterface $file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function canModify(FileNodeInterface $file)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return ($file instanceof LocalFileNodeInterface &&  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $file->exists());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Modify the file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param FileNodeInterface $file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array             $options  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return FileNodeInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws InvalidArgumentException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                    public function modify(FileNodeInterface $file, array $options = [])  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$this->canModify($file) || !($file instanceof LocalFileNodeInterface)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new InvalidArgumentException(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                "The specified file: '$file' does not implement LocalFileNodeInterface'"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $file->setEncoding($this->getEncoding($file));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $file;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.