| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  *  This program is free software: you can redistribute it and/or modify | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  *  it under the terms of the GNU Lesser General Public License as published by | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  *  the Free Software Foundation, either version 3 of the License, or | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  *  (at your option) any later version. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  *  This program is distributed in the hope that it will be useful, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  *  but WITHOUT ANY WARRANTY; without even the implied warranty of | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  *  GNU Lesser General Public License for more details. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  *  You should have received a copy of the GNU Lesser General Public License | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  *  along with this program.  If not, see <http://www.gnu.org/licenses/>. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | namespace fkooman\RemoteStorage; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | use fkooman\RemoteStorage\Exception\PathException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | class Path | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     /** @var string */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     private $p; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |     /** @var array */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |     private $pathParts; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |     public function __construct($p) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |         if (!is_string($p)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |             throw new PathException('invalid path: not a string'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |         // MUST contain at least one slash and start with it | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |         if (0 !== strpos($p, '/')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |             throw new PathException('invalid path: does not start with /'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |         // MUST NOT contain encoded "/" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |         if (false !== stripos($p, '%2f')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |             throw new PathException('invalid path: contains encoded "/"'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |         // MUST NOT contain encoded "\0" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |         if (false !== strpos($p, '%00')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |             throw new PathException('invalid path: contains encoded "\0"'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |         // MUST NOT contain ".." | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |         if (false !== strpos($p, '..')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |             throw new PathException('invalid path: contains ..'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |         // MUST NOT contain "%2e%2e" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |         if (false !== stripos($p, '%2e%2e')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |             throw new PathException('invalid path: contains encoded ".."'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |         // MUST NOT contain "//" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |         if (false !== strpos($p, '//')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |             throw new PathException('invalid path: contains //'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |         // MUST contain a user | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |         $pathParts = explode('/', $p); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |         if (count($pathParts) < 3) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |             throw new PathException('invalid path: no user specified'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |         foreach ($pathParts as $pathPart) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |             $this->pathParts[] = rawurldecode($pathPart); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |         $this->p = implode('/', $this->pathParts); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |     public function getPath() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |         return $this->p; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     public function getIsPublic() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |         return count($this->pathParts) > 3 && 'public' === $this->pathParts[2]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |     public function getUserId() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |         return $this->pathParts[1]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |     public function getIsFolder() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |         return empty($this->pathParts[count($this->pathParts) - 1]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |     public function getIsDocument() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |         return !$this->getIsFolder(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 102 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 103 |  |  |     public function getModuleName() | 
            
                                                                        
                            
            
                                    
            
            
                | 104 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 105 |  |  |         $moduleNamePosition = $this->getIsPublic() ? 3 : 2; | 
            
                                                                        
                            
            
                                    
            
            
                | 106 |  |  |         if (count($this->pathParts) > $moduleNamePosition + 1) { | 
            
                                                                        
                            
            
                                    
            
            
                | 107 |  |  |             return $this->pathParts[$moduleNamePosition]; | 
            
                                                                        
                            
            
                                    
            
            
                | 108 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 109 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 110 |  |  |         return false; | 
            
                                                                        
                            
            
                                    
            
            
                | 111 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |     public function getFolderPath() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |         if ($this->getIsFolder()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |             return $this->p; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |         return substr($this->p, 0, strrpos($this->p, '/') + 1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |     public function getFolderTreeToUserRoot() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |         $p = $this->getFolderPath(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |         do { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |             $folderTree[] = $p; | 
                            
                    |  |  |  | 
                                                                                        
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                | 127 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |             // remove from last "/" to previous "/", e.g.: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |             // "/foo/bar/baz/" -> "/foo/bar/" | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |             // remove the last "/" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |             $p = substr($p, 0, strlen($p) - 1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |             // remove everything after the now last "/" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |             $p = substr($p, 0, strrpos($p, '/') + 1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |         } while (substr_count($p, '/') > 1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |         return $folderTree; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |     public function getFolderTreeFromUserRoot() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |         return array_reverse($this->getFolderTreeToUserRoot()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 144 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 145 |  |  |  | 
            
                        
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.