seeder-migration-issues

vendor/zendframework/zend-loader/src/PluginClassLoader.php

@@ -0,0 +1,217 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Loader;
+
+use ArrayIterator;
+use IteratorAggregate;
+use Traversable;
+
+/**
+ * Plugin class locator interface
+ */
+class PluginClassLoader implements PluginClassLocator
+{
+    /**
+     * List of plugin name => class name pairs
+     * @var array
+     */
+    protected $plugins = array();
+
+    /**
+     * Static map allow global seeding of plugin loader
+     * @var array
+     */
+    protected static $staticMap = array();
+
+    /**
+     * Constructor
+     *
+     * @param  null|array|Traversable $map If provided, seeds the loader with a map
+     */
+    public function __construct($map = null)
+    {
+        // Merge in static overrides
+        if (!empty(static::$staticMap)) {
+            $this->registerPlugins(static::$staticMap);
+        }
+
+        // Merge in constructor arguments
+        if ($map !== null) {
+            $this->registerPlugins($map);
+        }
+    }
+
+    /**
+     * Add a static map of plugins
+     *
+     * A null value will clear the static map.
+     *
+     * @param  null|array|Traversable $map
+     * @throws Exception\InvalidArgumentException
+     * @return void
+     */
+    public static function addStaticMap($map)
+    {
+        if (null === $map) {
+            static::$staticMap = array();
+            return;
+        }
+
+        if (!is_array($map) && !$map instanceof Traversable) {
+            throw new Exception\InvalidArgumentException('Expects an array or Traversable object');
+        }
+        foreach ($map as $key => $value) {
+            static::$staticMap[$key] = $value;
+        }
+    }
+
+    /**
+     * Register a class to a given short name
+     *
+     * @param  string $shortName
+     * @param  string $className
+     * @return PluginClassLoader
+     */
+    public function registerPlugin($shortName, $className)
+    {
+        $this->plugins[strtolower($shortName)] = $className;
+        return $this;
+    }
+
+    /**
+     * Register many plugins at once
+     *
+     * If $map is a string, assumes that the map is the class name of a
+     * Traversable object (likely a ShortNameLocator); it will then instantiate
+     * this class and use it to register plugins.
+     *
+     * If $map is an array or Traversable object, it will iterate it to
+     * register plugin names/classes.
+     *
+     * For all other arguments, or if the string $map is not a class or not a
+     * Traversable class, an exception will be raised.
+     *
+     * @param  string|array|Traversable $map
+     * @return PluginClassLoader
+     * @throws Exception\InvalidArgumentException
+     */
+    public function registerPlugins($map)
+    {
+        if (is_string($map)) {
+            if (!class_exists($map)) {
+                throw new Exception\InvalidArgumentException('Map class provided is invalid');
+            }
+            $map = new $map;
+        }
+        if (is_array($map)) {
+            $map = new ArrayIterator($map);
+        }
+        if (!$map instanceof Traversable) {
+            throw new Exception\InvalidArgumentException('Map provided is invalid; must be traversable');
+        }
+
+        // iterator_apply doesn't work as expected with IteratorAggregate
+        if ($map instanceof IteratorAggregate) {
+            $map = $map->getIterator();
+        }
+
+        foreach ($map as $name => $class) {
+            if (is_int($name) || is_numeric($name)) {
+                if (!is_object($class) && class_exists($class)) {
+                    $class = new $class();
+                }
+
+                if ($class instanceof Traversable) {
+                    $this->registerPlugins($class);
+                    continue;
+                }
+            }
+
+            $this->registerPlugin($name, $class);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Unregister a short name lookup
+     *
+     * @param  mixed $shortName
+     * @return PluginClassLoader
+     */
+    public function unregisterPlugin($shortName)
+    {
+        $lookup = strtolower($shortName);
+        if (array_key_exists($lookup, $this->plugins)) {
+            unset($this->plugins[$lookup]);
+        }
+        return $this;
+    }
+
+    /**
+     * Get a list of all registered plugins
+     *
+     * @return array|Traversable
+     */
+    public function getRegisteredPlugins()
+    {
+        return $this->plugins;
+    }
+
+    /**
+     * Whether or not a plugin by a specific name has been registered
+     *
+     * @param  string $name
+     * @return bool
+     */
+    public function isLoaded($name)
+    {
+        $lookup = strtolower($name);
+        return isset($this->plugins[$lookup]);
+    }
+
+    /**
+     * Return full class name for a named helper
+     *
+     * @param  string $name
+     * @return string|false
+     */
+    public function getClassName($name)
+    {
+        return $this->load($name);
+    }
+
+    /**
+     * Load a helper via the name provided
+     *
+     * @param  string $name
+     * @return string|false
+     */
+    public function load($name)
+    {
+        if (!$this->isLoaded($name)) {
+            return false;
+        }
+        return $this->plugins[strtolower($name)];
+    }
+
+    /**
+     * Defined by IteratorAggregate
+     *
+     * Returns an instance of ArrayIterator, containing a map of
+     * all plugins
+     *
+     * @return ArrayIterator
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->plugins);
+    }
+}