twig utility for centralizing macro support

Author: dmolsen

src/PatternLab/PatternEngine/Twig/TwigUtil.php

@@ -0,0 +1,57 @@
+<?php
+
+/*!
+ * Twig Pattern Engine Loader Class - String
+ *
+ * Copyright (c) 2014 Dave Olsen, http://dmolsen.com
+ * Licensed under the MIT license
+ *
+ * Sets an instance of Twig to deal with rendering of strings
+ *
+ */
+
+namespace PatternLab\PatternEngine\Twig;
+
+use \PatternLab\Config;
+use \PatternLab\Console;
+use \Symfony\Component\Finder\Finder;
+
+class TwigUtil {
+	
+	/**
+	* Load macros for the Twig PatternEngine
+	* @param  {Instance}       an instance of the twig engine
+	* @param  {String}         description of the loader type for the error
+	*
+	* @return {Instance}       an instance of the twig engine
+	*/
+	public static function loadMacros($instance, $instanceType) {
+		
+		// load defaults
+		$macroDir = Config::getOption("sourceDir").DIRECTORY_SEPARATOR."_macros";
+		$macroExt = Config::getOption("twigMacroExt");
+		$macroExt = $macroExt ? $macroExt : "macro";
+		
+		if (is_dir($macroDir)) {
+			
+			// loop through some macro containing dir and run...
+			$finder = new Finder();
+			$finder->files()->name("*.".$macroExt)->in($macroDir);
+			$finder->sortByName();
+			foreach ($finder as $file) {
+				$instance->addGlobal($file->getBasename($macroExt), $twig->loadTemplate($file->getRealPath()));
+			}
+			
+		} else {
+			
+			// write warning because the macro dir doesn't exist
+			$macroDirHR = Console::getHumanReadablePath($macroDir);
+			Console::writeWarning("the path <path>".$macroDirHR."</path> doesn't exist so macros won't be loaded for the ".$instanceType." loader...");
+			
+		}
+		
+		return $instance;
+		
+	}
+	
+}