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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace BrainExe\Core\Translation;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use BrainExe\Core\Annotations\CompilerPass as CompilerPassAnnotation;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use BrainExe\Core\Traits\FileCacheTrait;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Exception;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use ReflectionClass;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use ReflectionException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\DependencyInjection\ContainerBuilder;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @CompilerPassAnnotation  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                class CompilerPass implements CompilerPassInterface  | 
            
            
                                                                        
                            
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    const CACHE_FILE = ROOT . 'cache/translation_token';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    use FileCacheTrait;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    const TAG = 'middleware';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function process(ContainerBuilder $container)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $serviceIds = $container->getServiceIds();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $tokens = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($serviceIds as $serviceId) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $class = $container->getDefinition($serviceId)->getClass();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $reflection = new ReflectionClass($class);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } catch (Exception $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                continue;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($reflection->implementsInterface(TranslationProvider::class)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                /** @var TranslationProvider $class */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $tokens = array_merge($tokens, $class::getTokens());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        sort($tokens);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contentPhp = sprintf("return [\n    %s\n];\n", implode(",\n    ", array_map(function ($token) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return sprintf('_("%s")', addslashes($token)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }, $tokens)));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $contentHtml = sprintf("%s", implode("\n", array_map(function ($token) { | 
            
                            
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                            return sprintf('<span translate>%s</span>', addslashes($token)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }, $tokens)));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->dumpCacheFile(self::CACHE_FILE, $contentPhp);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        file_put_contents(self::CACHE_FILE . '.html', $contentHtml);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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PHP provides two ways to mark string literals. Either with single quotes
'literal'or with double quotes"literal". The difference between these is that string literals in double quotes may contain variables with are evaluated at run-time as well as escape sequences.String literals in single quotes on the other hand are evaluated very literally and the only two characters that needs escaping in the literal are the single quote itself (
\') and the backslash (\\). Every other character is displayed as is.Double quoted string literals may contain other variables or more complex escape sequences.
will print an indented:
Single is ValueIf your string literal does not contain variables or escape sequences, it should be defined using single quotes to make that fact clear.
For more information on PHP string literals and available escape sequences see the PHP core documentation.