| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * GitElephant - An abstraction layer for git written in PHP | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * Copyright (C) 2013  Matteo Giachino | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * This program is free software: you can redistribute it and/or modify | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * it under the terms of the GNU General Public License as published by | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * the Free Software Foundation, either version 3 of the License, or | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * (at your option) any later version. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * This program is distributed in the hope that it will be useful, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  * GNU General Public License for more details. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  * You should have received a copy of the GNU General Public License | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  * along with this program.  If not, see [http://www.gnu.org/licenses/]. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | namespace GitElephant\Objects\Diff; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  * A single portion of a file changed in a diff | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  * @author Matteo Giachino <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | class DiffChunk implements \ArrayAccess, \Countable, \Iterator | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |      * the cursor position | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |     private $position; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |      * diff start line from original file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |     private $originStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |      * diff end line from original file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |     private $originEndLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |      * diff start line from destination file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     private $destStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |      * diff end line from destination file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |     private $destEndLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |      * hunk header line | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |      * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |     private $headerLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |      * array of lines | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |      * @var array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |     private $lines; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |      * Class constructor | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |      * @param array $lines output lines from git binary | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |      * @throws \Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 | 2 |  |     public function __construct($lines) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 | 2 |  |         $this->position = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 | 2 |  |         $this->getLinesNumbers($lines[0]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 | 2 |  |         $this->parseLines(array_slice($lines, 1)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 | 2 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |      * Parse lines | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |      * @param array $lines output lines | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |      * @throws \Exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 | 2 |  |     private function parseLines($lines) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 | 2 |  |         $originUnchanged = $this->originStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 | 2 |  |         $destUnchanged = $this->destStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 | 2 |  |         $deleted = $this->originStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 | 2 |  |         $new = $this->destStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 | 2 |  |         foreach ($lines as $line) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 | 2 |  |             if (preg_match('/^\+(.*)/', $line)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 | 2 |  |                 $this->lines[] = new DiffChunkLineAdded($new++, preg_replace('/\+(.*)/', ' $1', $line)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 | 2 |  |                 $destUnchanged++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 | 2 |  |             } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 | 2 |  |                 if (preg_match('/^-(.*)/', $line)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 | 1 |  |                     $this->lines[] = new DiffChunkLineDeleted($deleted++, preg_replace('/-(.*)/', ' $1', $line)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 | 1 |  |                     $originUnchanged++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 | 1 |  |                 } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 | 2 |  |                     if (preg_match('/^ (.*)/', $line) || $line == '') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 | 2 |  |                         $this->lines[] = new DiffChunkLineUnchanged($originUnchanged++, $destUnchanged++, $line); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 | 2 |  |                         $deleted++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 | 2 |  |                         $new++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 | 2 |  |                     } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 | 2 |  |                         if (!preg_match('/\\ No newline at end of file/', $line)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |                             throw new \Exception(sprintf('GitElephant was unable to parse the line %s', $line)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |                         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |                     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 | 2 |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 | 2 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |      * Get line numbers | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |      * @param string $line a single line | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 | 2 |  |     private function getLinesNumbers($line) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 | 2 |  |         $matches = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 | 2 |  |         preg_match('/@@ -(.*) \+(.*) @@?(.*)/', $line, $matches); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 | 2 |  |         if (!strpos($matches[1], ',')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |             // one line | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |             $this->originStartLine = $matches[1]; | 
                            
                    |  |  |  | 
                                                                                        
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                | 142 |  |  |             $this->originEndLine   = $matches[1]; | 
                            
                    |  |  |  | 
                                                                                        
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                | 143 |  |  |         } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 | 2 |  |             list($this->originStartLine, $this->originEndLine) = explode(',', $matches[1]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 | 2 |  |         if (!strpos($matches[2], ',')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |             // one line | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 | 1 |  |             $this->destStartLine = $matches[2]; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 | 1 |  |             $this->destEndLine   = $matches[2]; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 | 1 |  |         } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 | 1 |  |             list($this->destStartLine, $this->destEndLine) = explode(',', $matches[2]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 | 2 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |      * destStartLine getter | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |      * @return int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |     public function getDestStartLine() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |         return $this->destStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |      * destEndLine getter | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |      * @return int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |     public function getDestEndLine() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |         return $this->destEndLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |      * originStartLine getter | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  |      * @return int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |     public function getOriginStartLine() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |         return $this->originStartLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  |      * originEndLine getter | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |      * @return int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |     public function getOriginEndLine() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  |         return $this->originEndLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  |     * Get hunk header line | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  |     * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  |     * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  |     */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  |     public function getHeaderLine() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |         if (null === $this->headerLine) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |             $line  = '@@'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |             $line .= ' -' . $this->getOriginStartLine() . ',' . $this->getOriginEndLine(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |             $line .= ' +' . $this->getDestStartLine() . ',' . $this->getDestEndLine(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |             $line .= ' @@'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |             $this->headerLine = $line; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |         return $this->headerLine; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |      * Get Lines | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |      * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |     public function getLines() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |         return $this->lines; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  |      * ArrayAccess interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  |      * @param int $offset offset | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  |     public function offsetExists($offset) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  |         return isset($this->lines[$offset]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  |      * ArrayAccess interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  |      * @param int $offset offset | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  |      * @return null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  |     public function offsetGet($offset) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  |         return isset($this->lines[$offset]) ? $this->lines[$offset] : null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  |      * ArrayAccess interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  |      * @param int   $offset offset | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  |      * @param mixed $value  value | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 253 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 254 |  |  |     public function offsetSet($offset, $value) | 
            
                                                                        
                            
            
                                    
            
            
                | 255 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 256 |  |  |         if (is_null($offset)) { | 
            
                                                                        
                            
            
                                    
            
            
                | 257 |  |  |             $this->lines[] = $value; | 
            
                                                                        
                            
            
                                    
            
            
                | 258 |  |  |         } else { | 
            
                                                                        
                            
            
                                    
            
            
                | 259 |  |  |             $this->lines[$offset] = $value; | 
            
                                                                        
                            
            
                                    
            
            
                | 260 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 261 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  |      * ArrayAccess interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  |      * @param int $offset offset | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  |     public function offsetUnset($offset) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  |         unset($this->lines[$offset]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  |      * Countable interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  |      * @return int|void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 | 1 |  |     public function count() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 | 1 |  |         return count($this->lines); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  |      * Iterator interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 | 1 |  |     public function current() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 | 1 |  |         return $this->lines[$this->position]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  |      * Iterator interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 | 1 |  |     public function next() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 | 1 |  |         ++$this->position; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 | 1 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  |      * Iterator interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  |      * @return int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  |     public function key() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  |         return $this->position; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  |      * Iterator interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 | 1 |  |     public function valid() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 | 1 |  |         return isset($this->lines[$this->position]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  |      * Iterator interface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 | 1 |  |     public function rewind() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 | 1 |  |         $this->position = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 | 1 |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 328 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 329 |  |  |  | 
            
                        
This check looks for assignments to scalar types that may be of the wrong type.
To ensure the code behaves as expected, it may be a good idea to add an explicit type cast.