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<?php |
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/** |
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* This file is part of WebHelper Parser. |
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* |
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* (c) James <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WebHelper\Parser\Parser; |
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use InvalidArgumentException; |
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use Webmozart\Assert\Assert; |
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use Webmozart\PathUtil\Path; |
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/** |
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* Helper class to check strings. |
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* |
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* @author James <[email protected]> |
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*/ |
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class Checker |
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{ |
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/** @var string a string to check */ |
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private $string = ''; |
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/** |
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* Sets an empty string if the parameter has the wrong type. |
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* |
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* @param string $string a string to check |
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*/ |
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public function setString($string = '') |
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{ |
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try { |
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Assert::string($string); |
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} catch (InvalidArgumentException $e) { |
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$this->string = ''; |
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} |
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$this->string = $string; |
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return $this; |
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} |
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/** |
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* Gets the string. |
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* |
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* @return string the string |
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*/ |
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public function getString() |
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{ |
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return $this->string; |
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} |
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/** |
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* Confirms if a string is an existing absolute path. |
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* |
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* @return bool true if the string is an existing absolute path, false otherwise |
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*/ |
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public function isValidAbsolutePath() |
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{ |
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if (!Path::isAbsolute($this->string)) { |
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return false; |
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} |
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if (!is_dir($this->string)) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Confirms if a string is a valid regular expression. |
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* |
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* @return bool true if the string is a valid regex, false otherwise |
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*/ |
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public function isValidRegex() |
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{ |
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set_error_handler('self::warningOnPregMatch', E_WARNING); |
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try { |
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preg_match($this->string, 'tester'); |
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} catch (InvalidArgumentException $e) { |
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return false; |
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} |
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restore_error_handler(); |
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return true; |
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} |
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/** |
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* Throws an exception instead of a warning. |
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* |
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* @param int $errno error code of a bad preg_match call |
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* @param string $errstr error message of a bad preg_match call |
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* |
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* @throws InvalidArgumentException [<description>] |
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*/ |
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private function warningOnPregMatch($errno, $errstr) |
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{ |
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throw new InvalidArgumentException($errstr, $errno); |
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} |
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/** |
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* Confirms if a valid regex string contains a key and a value named suppattern. |
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* |
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* A simple directive matcher MUST contain a key and a value named subpattern. |
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* A starting block directive matcher MUST contain a key and a value named subpattern. |
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* |
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* @return bool true if the string is valid, false otherwise |
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*/ |
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public function hasKeyAndValueSubPattern() |
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{ |
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if (!$this->isValidRegex()) { |
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return false; |
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} |
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if (false === strpos($this->string, '(?<key>') || false === strpos($this->string, '(?<value>')) { |
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return false; |
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} |
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return true; |
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} |
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} |
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JamesRezo /
webhelper-parser
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