| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * @package    Fuel\Common | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * @version    2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * @author     Fuel Development Team | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * @license    MIT License | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * @copyright  2010 - 2015 Fuel Development Team | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * @link       http://fuelphp.com | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | namespace Fuel\Common; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  * Class for building regular expressions | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  * @package Fuel\Common | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | class RegexFactory | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | 	 * Contains the expression being built | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | 	 * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | 	protected $expression; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | 	 * Keeps track of any open delimiters to ensure everything is closed correctly | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | 	 * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | 	protected $openDelimiters; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 	 * Contains the status of any flags that have been added | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | 	 * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | 	protected $flags; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 	public function __construct() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  | 		$this->reset(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 	 * Resets the string being built | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 	public function reset() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 		$this->expression = ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | 		$this->openDelimiters = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | 		$this->flags = ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	 * Gets the built expression | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 	 * @param bool $delimit Set to false to disable adding the delimiters to the string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 	public function get($delimit = true) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 		// If there are still open delimiters throw an exception | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 		if ($this->openDelimiters !== 0) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 		{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 			throw new \LogicException('A delimiter has not been closed!'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 		$expression = $this->expression; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 		if ($delimit) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  | 		{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | 			$expression = '/' . $expression . '/'  . $this->flags; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 		return $expression; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 	 * Calls get() to return the built regex | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 	public function __toString() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 		return $this->get(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  | 	 * Adds any given value to the expression being built | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  | 	 * @param string $value | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 	public function value($value) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  | 		$this->expression .= $value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 	 * Starts a group capture | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  | 	public function startGroupCapture() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 		$this->expression .= '('; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 		$this->openDelimiters++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  | 	 * Ends a group capture | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 	public function endGroupCapture() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 		$this->value(')'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 		$this->openDelimiters--; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  | 	 * Starts a range indicator | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 	public function startRange() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 		$this->value('['); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 		$this->openDelimiters++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 	 * Ends a range indicator | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 	public function endRange() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  | 		$this->value(']'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 		$this->openDelimiters--; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 	 * Adds a a-z range | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  | 	public function lowercase() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  | 		$this->value('a-z'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  | 	 * Adds a A-Z range | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 	public function uppercase() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  | 		$this->value('A-Z'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  | 	 * Adds a 0-9 range | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  | 	public function numeric() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  | 		$this->value('0-9'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  | 	 * Adds an "any" matcher | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  | 	public function any() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  | 		$this->value('.'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  | 	 * Matches against the start of the string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  | 	public function start() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  | 		$this->value('^'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  | 	 * Matches the end of the string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  | 	public function end() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  | 		$this->value('$'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  | 	 * Matches none of one of the preceding statements | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  | 	public function noneOrOne() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 |  |  | 		$this->value('?'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  | 	 * Matches none or more of the preceding statement | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  | 	public function noneOrMany() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  | 		$this->value('*'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  | 	 * Matches one or more of the preceding statement | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  | 	public function oneOrMore() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  | 		$this->value('+'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  | 	 * Adds an or "|" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 312 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 313 |  |  | 	public function addOr() | 
            
                                                                        
                            
            
                                    
            
            
                | 314 |  |  | 	{ | 
            
                                                                        
                            
            
                                    
            
            
                | 315 |  |  | 		$this->value('|'); | 
            
                                                                        
                            
            
                                    
            
            
                | 316 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 317 |  |  | 		return $this; | 
            
                                                                        
                            
            
                                    
            
            
                | 318 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  | 	 * Adds a {} to match a quantity | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  | 	 * @param int      $min | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  | 	 * @param int|null $max | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  | 	public function matchQuantity($min, $max = null) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  | 		$match = '{'.$min; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 333 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 334 |  |  | 		if ($max !== null) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 335 |  |  | 		{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 336 |  |  | 			$match .= ',' . $max; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 337 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 338 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 339 |  |  | 		$match .= '}'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 340 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  | 		$this->value($match); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 347 |  |  | 	 * Makes the regex case insensitive by adding the i flag | 
            
                                                                                                            
                            
            
                                    
            
            
                | 348 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 349 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 350 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 351 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 352 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 353 |  |  | 	public function caseInsensitive() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 354 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 355 |  |  | 		$this->flags .= 'i'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 356 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 357 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 358 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 359 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 360 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 361 |  |  | 	 * Ignores whitespace in the regex by adding the x flag | 
            
                                                                                                            
                            
            
                                    
            
            
                | 362 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 363 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 364 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 365 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 366 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 367 |  |  | 	public function ignoreWhitespace() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 368 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 369 |  |  | 		$this->flags .= 'x'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 370 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 371 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 372 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 373 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 374 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 375 |  |  | 	 * Makes #{} substitutions happen only once by adding the o flag | 
            
                                                                                                            
                            
            
                                    
            
            
                | 376 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 377 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 378 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 379 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 380 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 381 |  |  | 	public function singleSubstitution() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 382 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 383 |  |  | 		$this->flags .= 'o'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 384 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 385 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 386 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 387 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 388 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 389 |  |  | 	 * Makes dot match newline characters using the m flag | 
            
                                                                                                            
                            
            
                                    
            
            
                | 390 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 391 |  |  | 	 * @return $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 392 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 393 |  |  | 	 * @since 2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 394 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 395 |  |  | 	public function dotNewline() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 396 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 397 |  |  | 		$this->flags .= 'm'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 398 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 399 |  |  | 		return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 400 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 401 |  |  |  | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 402 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 403 |  |  |  |