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<?php |
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namespace JClaveau\LogicalFilter\Rule; |
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/** |
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* a regexp /^...$/ |
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* |
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* RegexpRule follow the PCRE syntax as PHP and MariaDb. |
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* |
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* @see https://mariadb.com/kb/en/library/pcre/ |
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*/ |
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class RegexpRule extends AbstractAtomicRule |
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{ |
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/** @var string operator */ |
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const operator = 'regexp'; |
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/** @var mixed $value */ |
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protected $pattern; |
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/** |
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* |
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* @param string $field The field to apply the rule on. |
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* @param array $pattern The regular expression to match. |
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* |
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* @todo Support Posix? |
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*/ |
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public function __construct( $field, $pattern ) |
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{ |
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$this->field = $field; |
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$this->pattern = $pattern; |
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} |
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/** |
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*/ |
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public function getPattern() |
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{ |
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return $this->pattern; |
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} |
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/** |
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* @return array |
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*/ |
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public function getValues() |
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{ |
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return $this->getPattern(); |
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} |
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/** |
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* By default, every atomic rule can have a solution by itself |
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* |
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* @return bool |
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*/ |
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public function hasSolution(array $simplification_options=[]) |
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{ |
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return true; |
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} |
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/** |
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* Removes the delimiter and write the options in a MariaDB way. |
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* |
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* @param string The pattern written in a PHP PCRE way |
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* @return string The pattern in a MariaDB syntax |
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* |
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* @todo Find more difference between MariaDB and PHP and handle them. |
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* @see https://mariadb.com/kb/en/library/pcre/ |
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*/ |
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public static function php2mariadbPCRE($php_regexp) |
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{ |
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$delimiter = substr($php_regexp, 0, 1); |
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$quoted_delimiter = preg_quote($delimiter, '#'); |
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if ( ! preg_match("#^$quoted_delimiter(.*)$quoted_delimiter([^$quoted_delimiter]*)$#", $php_regexp, $matches)) { |
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throw new \InvalidArgumentException( |
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"The provided PCRE regular expression (with the delimiter '$delimiter') cannot be parsed: " |
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.var_export($php_regexp, true) |
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); |
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} |
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$pattern = $matches[1]; |
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$options = $matches[2]; |
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return ($options ? "(?$options)" : '') . $pattern; |
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} |
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/**/ |
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} |
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jclaveau /
php-logical-filter
