MDL-44357 theme: Allow core to compile LESS in PHP

lib/lessphp/Configurable.php

@@ -0,0 +1,69 @@
+<?php
+
+/**
+ * Configurable
+ *
+ * @package Less
+ * @subpackage Core
+ */
+abstract class Less_Configurable {
+
+	/**
+	 * Array of options
+	 *
+	 * @var array
+	 */
+	protected $options = array();
+
+	/**
+	 * Array of default options
+	 *
+	 * @var array
+	 */
+	protected $defaultOptions = array();
+
+
+	/**
+	 * Set options
+	 *
+	 * If $options is an object it will be converted into an array by called
+	 * it's toArray method.
+	 *
+	 * @throws Exception
+	 * @param array|object $options
+	 *
+	 */
+	public function setOptions($options){
+		$options = array_intersect_key($options,$this->defaultOptions);
+		$this->options = array_merge($this->defaultOptions, $this->options, $options);
+	}
+
+
+	/**
+	 * Get an option value by name
+	 *
+	 * If the option is empty or not set a NULL value will be returned.
+	 *
+	 * @param string $name
+	 * @param mixed $default Default value if confiuration of $name is not present
+	 * @return mixed
+	 */
+	public function getOption($name, $default = null){
+		if(isset($this->options[$name])){
+			return $this->options[$name];
+		}
+		return $default;
+	}
+
+
+	/**
+	 * Set an option
+	 *
+	 * @param string $name
+	 * @param mixed $value
+	 */
+	public function setOption($name, $value){
+		$this->options[$name] = $value;
+	}
+
+}