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                <?php declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                * @package   s9e\TextFormatter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                * @copyright Copyright (c) 2010-2020 The s9e authors  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                * @license   http://www.opensource.org/licenses/mit-license.php The MIT License  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace s9e\TextFormatter\Plugins\TaskLists;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use s9e\TextFormatter\Parser;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use s9e\TextFormatter\Parser\Tag;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Helper  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public static function filterListItem(Parser $parser, Tag $listItem, string $text): void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// Test whether the list item is followed by a task checkbox  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$pos  = $listItem->getPos() + $listItem->getLen();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$pos += strspn($text, ' ', $pos);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$str  = substr($text, $pos, 3);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if (!preg_match('/\\[[ Xx]\\]/', $str)) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// Create a tag for the task and assign it a random ID  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$taskId = uniqid();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$task   = $parser->addSelfClosingTag('TASK', $pos, 3); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$task->setAttribute('id', $taskId); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ($str !== '[ ]')  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$task->setAttribute('state', 'checked'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// Copy the task's ID to the list item  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$listItem->setAttribute('task_id', $taskId); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	*   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	* @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	*/  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public static function x()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	{ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	* Return stats from a parsed representation  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	* @param  string $xml Parsed XML  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	* @return array       Number of "checked" and "unchecked" tasks  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	*/  | 
            
            
                                                        
            
                                    
            
            
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                	public static function getStats(string $xml): array  | 
            
            
                                                        
            
                                    
            
            
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                	{ | 
            
            
                                                        
            
                                    
            
            
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                		$stats = [  | 
            
            
                                                        
            
                                    
            
            
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                			'checked'   => 0,  | 
            
            
                                                        
            
                                    
            
            
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                			'unchecked' => 0  | 
            
            
                                                        
            
                                    
            
            
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                		];  | 
            
            
                                                        
            
                                    
            
            
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                		preg_match_all('(<TASK(?= )[^>]++)', $xml, $m); | 
            
            
                                                        
            
                                    
            
            
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                		foreach ($m[0] as $str)  | 
            
            
                                                        
            
                                    
            
            
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                		{ | 
            
            
                                                        
            
                                    
            
            
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                			$state = (strpos($str, 'state="checked"')) ? 'checked' : 'unchecked';  | 
            
            
                                                        
            
                                    
            
            
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                			++$stats[$state];  | 
            
            
                                                        
            
                                    
            
            
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                		}  | 
            
            
                                                        
            
                                    
            
            
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                		return $stats;  | 
            
            
                                                        
            
                                    
            
            
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                	}  | 
            
            
                                                        
            
                                    
            
            
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                }  |