Moved cache drivers outside core to extensions (plugins)

plugins/cache-redis/Predis/Connection/Parameters.php

@@ -0,0 +1,176 @@
+<?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
+{
+    private $parameters;
+
+    private static $defaults = array(
+        'scheme' => 'tcp',
+        'host' => '127.0.0.1',
+        'port' => 6379,
+        'timeout' => 5.0,
+    );
+
+    /**
+     * @param array $parameters Named array of connection parameters.
+     */
+    public function __construct(array $parameters = array())
+    {
+        $this->parameters = $this->filter($parameters) + $this->getDefaults();
+    }
+
+    /**
+     * Returns some default parameters with their values.
+     *
+     * @return array
+     */
+    protected function getDefaults()
+    {
+        return self::$defaults;
+    }
+
+    /**
+     * 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/redis
+     *
+     * @param string $uri URI string.
+     *
+     * @throws \InvalidArgumentException
+     *
+     * @return array
+     */
+    public static function parse($uri)
+    {
+        if (stripos($uri, 'unix') === 0) {
+            // Hack to support URIs for UNIX sockets with minimal effort.
+            $uri = str_ireplace('unix:///', 'unix://localhost/', $uri);
+        }
+
+        if (!$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['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;
+    }
+
+    /**
+     * Validates and converts each value of the connection parameters array.
+     *
+     * @param array $parameters Connection parameters.
+     *
+     * @return array
+     */
+    protected function filter(array $parameters)
+    {
+        return $parameters ?: array();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __get($parameter)
+    {
+        if (isset($this->parameters[$parameter])) {
+            return $this->parameters[$parameter];
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __isset($parameter)
+    {
+        return isset($this->parameters[$parameter]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function toArray()
+    {
+        return $this->parameters;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __sleep()
+    {
+        return array('parameters');
+    }
+}