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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Charcoal\View\Twig;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Exception;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use InvalidArgumentException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // From `twig/twig`  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Twig_LoaderInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Twig_Source;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Parent namespace dependencies  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Charcoal\View\AbstractLoader;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Charcoal\View\LoaderInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * The Charcoal View Twig Loader implements both Twig_LoaderInterface and its own LoaderInterface.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class TwigLoader extends AbstractLoader implements  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    LoaderInterface,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    Twig_LoaderInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Convert an identifier to a file path.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $ident The identifier to convert.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function filenameFromIdent($ident)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filename = str_replace([ '\\' ], '.', $ident);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filename .= '.twig';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $filename;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Twig_LoaderInterface > getSource()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Gets the source code of a template, given its name.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  string $name The name of the template to load.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string The template source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getSource($name)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->load($name);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Twig_LoaderInterface > getSourceContext()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Gets the source code of a template, given its name.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * For Twig 2.x  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  string $name The name of the template to load.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return Twig_Source The template source object.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getSourceContext($name)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $source = $this->load($name);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new Twig_Source($source, $name);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Twig_LoaderInterface > exists()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * For Twig 2.x  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  string $name The name of the template to load.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return boolean  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function exists($name)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return !!$this->findTemplateFile($name);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Twig_LoaderInterface > getCacheKey()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Gets the cache key to use for the cache for a given template name.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param  string $name The name of the template to load.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string The cache key  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function getCacheKey($name)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $key = $this->findTemplateFile($name);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $key;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Twig_LoaderInterface > isFresh()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Returns true if the template is still fresh.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string  $name The template name.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param integer $time The last modification time of the cached template.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return boolean  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function isFresh($name, $time)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $file = $this->findTemplateFile($name);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $fresh = (filemtime($file) <= $time);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $fresh;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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