template 엔진 '일단' 추가

e_lib/plates/Template/Func.php

@@ -0,0 +1,107 @@
+<?php
+
+namespace League\Plates\Template;
+
+use League\Plates\Extension\ExtensionInterface;
+use LogicException;
+
+/**
+ * A template function.
+ */
+class Func
+{
+    /**
+     * The function name.
+     * @var string
+     */
+    protected $name;
+
+    /**
+     * The function callback.
+     * @var callable
+     */
+    protected $callback;
+
+    /**
+     * Create new Func instance.
+     * @param string   $name
+     * @param callable $callback
+     */
+    public function __construct($name, $callback)
+    {
+        $this->setName($name);
+        $this->setCallback($callback);
+    }
+
+    /**
+     * Set the function name.
+     * @param  string $name
+     * @return Func
+     */
+    public function setName($name)
+    {
+        if (preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/', $name) !== 1) {
+            throw new LogicException(
+                'Not a valid function name.'
+            );
+        }
+
+        $this->name = $name;
+
+        return $this;
+    }
+
+    /**
+     * Get the function name.
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Set the function callback
+     * @param  callable $callback
+     * @return Func
+     */
+    public function setCallback($callback)
+    {
+        if (!is_callable($callback, true)) {
+            throw new LogicException(
+                'Not a valid function callback.'
+            );
+        }
+
+        $this->callback = $callback;
+
+        return $this;
+    }
+
+    /**
+     * Get the function callback.
+     * @return callable
+     */
+    public function getCallback()
+    {
+        return $this->callback;
+    }
+
+    /**
+     * Call the function.
+     * @param  Template $template
+     * @param  array    $arguments
+     * @return mixed
+     */
+    public function call(Template $template = null, $arguments = array())
+    {
+        if (is_array($this->callback) and
+            isset($this->callback[0]) and
+            $this->callback[0] instanceof ExtensionInterface
+        ) {
+            $this->callback[0]->template = $template;
+        }
+
+        return call_user_func_array($this->callback, $arguments);
+    }
+}