Resque_Redis::parseDsn()

Complexity

Conditions	20
Paths	388

Size

Total Lines	69
Code Lines	38

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	26
CRAP Score	20.0202

Importance

Changes	4
Bugs	0	Features	0

<?php
	public static function parseDsn($dsn)
	{
		if ($dsn == '') {
			// Use a sensible default for an empty DNS string
			$dsn = 'redis://' . self::DEFAULT_HOST;
		}
		if (substr($dsn, 0, 7) === 'unix://') {
			return array(
				$dsn,
				null,
				false,
				null,
				null,
				null,
			);
		}
		$parts = parse_url($dsn);

		// Check the URI scheme
		$validSchemes = array('redis', 'tcp');
		if (isset($parts['scheme']) && ! in_array($parts['scheme'], $validSchemes)) {
			throw new \InvalidArgumentException("Invalid DSN. Supported schemes are " . implode(', ', $validSchemes));
		}

		// Allow simple 'hostname' format, which `parse_url` treats as a path, not host.
		if (! isset($parts['host']) && isset($parts['path'])) {
			$parts['host'] = $parts['path'];
			unset($parts['path']);
		}

		// Extract the port number as an integer
		$port = isset($parts['port']) ? intval($parts['port']) : self::DEFAULT_PORT;

		// Get the database from the 'path' part of the URI
		$database = false;
		if (isset($parts['path'])) {
			// Strip non-digit chars from path
			$database = intval(preg_replace('/[^0-9]/', '', $parts['path']));
		}

		// Extract any 'user' values
		$user = isset($parts['user']) ? $parts['user'] : false;

		// Convert the query string into an associative array
		$options = array();
		if (isset($parts['query'])) {
			// Parse the query string into an array
			parse_str($parts['query'], $options);
		}

		//check 'password-encoding' parameter and extracting password based on encoding
		if ($options && isset($options['password-encoding']) && $options['password-encoding'] === 'u') {
			//extracting urlencoded password
			$pass = isset($parts['pass']) ? urldecode($parts['pass']) : false;
		} elseif ($options && isset($options['password-encoding']) && $options['password-encoding'] === 'b') {
			//extracting base64 encoded password
			$pass = isset($parts['pass']) ? base64_decode($parts['pass']) : false;
		} else {
			//extracting pass directly since 'password-encoding' parameter is not present
			$pass = isset($parts['pass']) ? $parts['pass'] : false;
		}

		return array(
			$parts['host'],
			$port,
			$database,
			$user,
			$pass,
			$options,
		);