| 1 |  |  | <?php declare(strict_types=1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * This file is part of TwigView. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  ** (c) 2014 Cees-Jan Kiewiet | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * For the full copyright and license information, please view the LICENSE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * file that was distributed with this source code. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | namespace WyriHaximus\TwigView\Lib\Twig; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | use Cake\Core\App; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | use Cake\Core\Plugin; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | use Twig\Error\LoaderError; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | use Twig\Loader\LoaderInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | use Twig\Loader\SourceContextLoaderInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | use Twig\Source; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | use WyriHaximus\TwigView\View\TwigView; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  * Class Loader. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  * @package WyriHaximus\TwigView\Lib\Twig | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | final class Loader implements LoaderInterface, SourceContextLoaderInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |      * Get the file contents of a template. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |      * @param string $name Template. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 | 4 |  |     public function getSource($name): string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 | 4 |  |         $name = $this->resolveFileName($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 | 3 |  |         return file_get_contents($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |      * Returns the source context for a given template logical name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |      * @param string $name The template logical name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |      * @throws Twig\Error\Loader When $name is not found | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |      * @return Twig\Source | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 | 2 |  |     public function getSourceContext($name): Source | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 | 2 |  |         $code = $this->getSource($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 | 2 |  |         $path = $this->getFilename($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 | 2 |  |         return new Source($code, $name, $path); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      * Get cache key for template. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |      * @param string $name Template. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |      * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 | 5 |  |     public function getCacheKey($name): string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 | 5 |  |         return $this->resolveFileName($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |      * Check if template is still fresh. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |      * @param string $name Template. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |      * @param int    $time Timestamp. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 | 2 |  |     public function isFresh($name, $time): bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 | 2 |  |         $name = $this->resolveFileName($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 | 1 |  |         return filemtime($name) < $time; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |      * Check if we have the source code of a template, given its name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |      * @param string $name The name of the template to check if we can load. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |      * @return bool If the template source code is handled by this loader or not. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |     public function exists($name): bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |         $filename = $this->getFilename($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |         if ($filename === false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |             return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |         return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |      * Resolve template name to filename. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |      * @param string $name Template. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |      * @throws \Twig\Error\LoaderError Thrown when template file isn't found. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |      * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 | 9 |  |     protected function resolveFileName($name): string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 | 9 |  |         $filename = $this->getFilename($name); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 | 9 |  |         if ($filename === false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 | 3 |  |             throw new LoaderError(sprintf('Template "%s" is not defined.', $name)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 | 6 |  |         return $filename; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |      * Get template filename. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |      * @param string $name Template. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |      * @return string|false | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |      * | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 128 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 129 | 9 |  |     protected function getFilename($name) | 
            
                                                                        
                            
            
                                    
            
            
                | 130 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 131 | 9 |  |         if (file_exists($name)) { | 
            
                                                                        
                            
            
                                    
            
            
                | 132 | 3 |  |             return $name; | 
            
                                                                        
                            
            
                                    
            
            
                | 133 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 134 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 135 | 6 |  |         list($plugin, $file) = pluginSplit($name); | 
            
                                                                        
                            
            
                                    
            
            
                | 136 | 6 |  |         foreach ([null, $plugin] as $scope) { | 
            
                                                                        
                            
            
                                    
            
            
                | 137 | 6 |  |             $paths = $this->getPaths($scope); | 
            
                                                                        
                            
            
                                    
            
            
                | 138 | 6 |  |             foreach ($paths as $path) { | 
            
                                                                        
                            
            
                                    
            
            
                | 139 | 6 |  |                 $filePath = $path . $file; | 
            
                                                                        
                            
            
                                    
            
            
                | 140 | 6 |  |                 if (file_exists($filePath)) { | 
            
                                                                        
                            
            
                                    
            
            
                | 141 | 2 |  |                     return $filePath; | 
            
                                                                        
                            
            
                                    
            
            
                | 142 |  |  |                 } | 
            
                                                                        
                            
            
                                    
            
            
                | 143 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 144 | 6 |  |                 $filePath = $path . $file . TwigView::EXT; | 
            
                                                                        
                            
            
                                    
            
            
                | 145 | 6 |  |                 if (file_exists($filePath)) { | 
            
                                                                        
                            
            
                                    
            
            
                | 146 | 6 |  |                     return $filePath; | 
            
                                                                        
                            
            
                                    
            
            
                | 147 |  |  |                 } | 
            
                                                                        
                            
            
                                    
            
            
                | 148 |  |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 149 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 150 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 151 | 3 |  |         return false; | 
            
                                                                        
                            
            
                                    
            
            
                | 152 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |      * Check if $plugin is active and return it's template paths or return the aps template paths. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |      * @param string|null $plugin The plugin in question. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |      * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 | 6 |  |     protected function getPaths($plugin): array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 | 6 |  |         if ($plugin === null || !Plugin::loaded($plugin)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 | 6 |  |             return App::path('Template'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 | 4 |  |         return App::path('Template', $plugin); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 169 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 170 |  |  |  | 
            
                        
This check looks for type mismatches where the missing type is
false. This is usually indicative of an error condtion.Consider the follow example
This function either returns a new
DateTimeobject or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returnedfalsebefore passing on the value to another function or method that may not be able to handle afalse.