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<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <suppakilla@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Predis\Connection;
/**
* Container for connection parameters used to initialize connections to Redis.
*
* {@inheritdoc}
*
* @author Daniele Alessandri <suppakilla@gmail.com>
*/
class Parameters implements ParametersInterface
{
protected static $defaults = array(
'scheme' => 'tcp',
'host' => '127.0.0.1',
'port' => 6379,
);
/**
* Set of connection paramaters already filtered
* for NULL or 0-length string values.
*
* @var array
*/
protected $parameters;
/**
* @param array $parameters Named array of connection parameters.
*/
public function __construct(array $parameters = array())
{
$this->parameters = $this->filter($parameters + static::$defaults);
}
/**
* Filters parameters removing entries with NULL or 0-length string values.
*
* @params array $parameters Array of parameters to be filtered
*
* @return array
*/
protected function filter(array $parameters)
{
return array_filter($parameters, function ($value) {
return $value !== null && $value !== '';
});
}
/**
* Creates a new instance by supplying the initial parameters either in the
* form of an URI string or a named array.
*
* @param array|string $parameters Set of connection parameters.
*
* @return Parameters
*/
public static function create($parameters)
{
if (is_string($parameters)) {
$parameters = static::parse($parameters);
}
return new static($parameters ?: array());
}
/**
* Parses an URI string returning an array of connection parameters.
*
* When using the "redis" and "rediss" schemes the URI is parsed according
* to the rules defined by the provisional registration documents approved
* by IANA. If the URI has a password in its "user-information" part or a
* database number in the "path" part these values override the values of
* "password" and "database" if they are present in the "query" part.
*
* @link http://www.iana.org/assignments/uri-schemes/prov/redis
* @link http://www.iana.org/assignments/uri-schemes/prov/rediss
*
* @param string $uri URI string.
*
* @throws \InvalidArgumentException
*
* @return array
*/
public static function parse($uri)
{
if (stripos($uri, 'unix://') === 0) {
// parse_url() can parse unix:/path/to/sock so we do not need the
// unix:///path/to/sock hack, we will support it anyway until 2.0.
$uri = str_ireplace('unix://', 'unix:', $uri);
}
if (!$parsed = parse_url($uri)) {
throw new \InvalidArgumentException("Invalid parameters URI: $uri");
}
if (
isset($parsed['host'])
&& false !== strpos($parsed['host'], '[')
&& false !== strpos($parsed['host'], ']')
) {
$parsed['host'] = substr($parsed['host'], 1, -1);
}
if (isset($parsed['query'])) {
parse_str($parsed['query'], $queryarray);
unset($parsed['query']);
$parsed = array_merge($parsed, $queryarray);
}
if (stripos($uri, 'redis') === 0) {
if (isset($parsed['user'])) {
if (strlen($parsed['user'])) {
$parsed['username'] = $parsed['user'];
}
unset($parsed['user']);
}
if (isset($parsed['pass'])) {
if (strlen($parsed['pass'])) {
$parsed['password'] = $parsed['pass'];
}
unset($parsed['pass']);
}
if (isset($parsed['path']) && preg_match('/^\/(\d+)(\/.*)?/', $parsed['path'], $path)) {
$parsed['database'] = $path[1];
if (isset($path[2])) {
$parsed['path'] = $path[2];
} else {
unset($parsed['path']);
}
}
}
return $parsed;
}
/**
* {@inheritdoc}
*/
public function toArray()
{
return $this->parameters;
}
/**
* {@inheritdoc}
*/
public function __get($parameter)
{
if (isset($this->parameters[$parameter])) {
return $this->parameters[$parameter];
}
}
/**
* {@inheritdoc}
*/
public function __isset($parameter)
{
return isset($this->parameters[$parameter]);
}
/**
* {@inheritdoc}
*/
public function __toString()
{
if ($this->scheme === 'unix') {
return "$this->scheme:$this->path";
}
if (filter_var($this->host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
return "$this->scheme://[$this->host]:$this->port";
}
return "$this->scheme://$this->host:$this->port";
}
/**
* {@inheritdoc}
*/
public function __sleep()
{
return array('parameters');
}
}