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<?php |
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namespace ExileeD\PDOParseDSN; |
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class DSN |
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{ |
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/** |
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* @var string |
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*/ |
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private $dsn; |
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/** |
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* Mysql, pgsql |
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* |
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* @var string |
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*/ |
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private $protocol; |
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/** |
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* @var array |
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*/ |
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private $parameters = []; |
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/** |
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* Constructor. |
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* |
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* @param string $dsn |
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* |
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* @throws \LogicException |
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*/ |
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public function __construct($dsn) |
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{ |
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$this->dsn = $dsn; |
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$this->parseDsn($dsn); |
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} |
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/** |
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* @param string $dsn |
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* |
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* @throws \LogicException |
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*/ |
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private function parseDsn($dsn) |
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{ |
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$dsn = trim($dsn); |
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if (strpos($dsn, ':') === false) { |
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throw new \LogicException(sprintf('The DSN is invalid. It does not have scheme separator ":".')); |
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} |
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list($prefix, $dsnWithoutPrefix) = preg_split('#\s*:\s*#', $dsn, 2); |
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$this->protocol = $prefix; |
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if (preg_match('/^[a-z\d]+$/', strtolower($prefix)) == false) { |
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throw new \LogicException('The DSN is invalid. Prefix contains illegal symbols.'); |
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} |
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$dsnElements = preg_split('#\s*\;\s*#', $dsnWithoutPrefix); |
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$elements = []; |
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foreach ($dsnElements as $element) { |
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if (strpos($dsnWithoutPrefix, '=') !== false) { |
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list($key, $value) = preg_split('#\s*=\s*#', $element, 2); |
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$elements[$key] = $value; |
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} else { |
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$elements = [ |
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$dsnWithoutPrefix, |
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]; |
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} |
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} |
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$this->parameters = $elements; |
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} |
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/** |
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* @return string |
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*/ |
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public function getDsn() |
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{ |
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return $this->dsn; |
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} |
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/** |
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* @return string|null |
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*/ |
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public function getProtocol() |
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{ |
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return $this->protocol; |
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} |
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/** |
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* @return string|null |
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*/ |
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public function getDatabase() |
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{ |
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return $this->getAttribute('dbname'); |
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} |
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/** |
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* @return string |
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*/ |
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public function getHost() |
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{ |
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return $this->getAttribute('host'); |
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} |
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/** |
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* @return string |
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*/ |
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public function getPort() |
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{ |
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return $this->getAttribute('port'); |
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} |
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/** |
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* @return string |
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*/ |
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public function getCharset() |
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{ |
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return $this->getAttribute('charset'); |
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} |
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/** |
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* Get an attribute from the $attributes array. |
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* |
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* @param string $key |
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* |
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* @return mixed |
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*/ |
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private function getAttribute($key) |
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{ |
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if (isset($this->parameters[$key])) { |
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return $this->parameters[$key]; |
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} |
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return null; |
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} |
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/** |
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* @return array |
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*/ |
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public function getParameters() |
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{ |
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return $this->parameters; |
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} |
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} |
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