Initial commit

#pma/libraries/di/Container.php

@@ -0,0 +1,167 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Holds the PMA\libraries\di\Container class
+ *
+ * @package PMA
+ */
+namespace PMA\libraries\di;
+
+/**
+ * Class Container
+ *
+ * @package PMA\libraries\di
+ */
+class Container
+{
+
+    /**
+     * @var Item[] $content
+     */
+    protected $content = array();
+
+    /**
+     * @var Container
+     */
+    protected static $defaultContainer;
+
+    /**
+     * Create a dependency injection container
+     *
+     * @param Container $base Container
+     */
+    public function __construct(Container $base = null)
+    {
+        if (isset($base)) {
+            $this->content = $base->content;
+        } else {
+            $this->alias('container', 'Container');
+        }
+        $this->set('Container', $this);
+    }
+
+    /**
+     * Get an object with given name and parameters
+     *
+     * @param string $name   Name
+     * @param array  $params Paramters
+     *
+     * @return mixed
+     */
+    public function get($name, $params = array())
+    {
+        if (isset($this->content[$name])) {
+            return $this->content[$name]->get($params);
+        }
+
+        if (isset($GLOBALS[$name])) {
+            return $GLOBALS[$name];
+        }
+
+        return null;
+    }
+
+    /**
+     * Remove an object from container
+     *
+     * @param string $name Name
+     *
+     * @return void
+     */
+    public function remove($name)
+    {
+        unset($this->content[$name]);
+    }
+
+    /**
+     * Rename an object in container
+     *
+     * @param string $name    Name
+     * @param string $newName New name
+     *
+     * @return void
+     */
+    public function rename($name, $newName)
+    {
+        $this->content[$newName] = $this->content[$name];
+        $this->remove($name);
+    }
+
+    /**
+     * Set values in the container
+     *
+     * @param string|array $name  Name
+     * @param mixed        $value Value
+     *
+     * @return void
+     */
+    public function set($name, $value = null)
+    {
+        if (is_array($name)) {
+            foreach ($name as $key => $val) {
+                $this->set($key, $val);
+            }
+            return;
+        }
+        $this->content[$name] = new ValueItem($value);
+    }
+
+    /**
+     * Register a service in the container
+     *
+     * @param string $name    Name
+     * @param mixed  $service Service
+     *
+     * @return void
+     */
+    public function service($name, $service = null)
+    {
+        if (!isset($service)) {
+            $service = $name;
+        }
+        $this->content[$name] = new ServiceItem($this, $service);
+    }
+
+    /**
+     * Register a factory in the container
+     *
+     * @param string $name    Name
+     * @param mixed  $factory Factory
+     *
+     * @return void
+     */
+    public function factory($name, $factory = null)
+    {
+        if (!isset($factory)) {
+            $factory = $name;
+        }
+        $this->content[$name] = new FactoryItem($this, $factory);
+    }
+
+    /**
+     * Register an alias in the container
+     *
+     * @param string $name   Name
+     * @param string $target Target
+     *
+     * @return void
+     */
+    public function alias($name, $target)
+    {
+        // The target may be not defined yet
+        $this->content[$name] = new AliasItem($this, $target);
+    }
+
+    /**
+     * Get the global default container
+     *
+     * @return Container
+     */
+    public static function getDefaultContainer()
+    {
+        if (!isset(static::$defaultContainer)) {
+            static::$defaultContainer = new Container();
+        }
+        return static::$defaultContainer;
+    }
+}