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wp-content/plugins/debloat/inc/autoloader.php

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+<?php
+
+namespace Sphere\Debloat;
+
+/**
+ * Autoloader for loading classes off defined namespaces or a class map.
+ * 
+ * @author  asadkn
+ * @since   1.0.0
+ */
+class Autoloader
+{
+	public $class_map;
+	public $namespaces = [];
+
+	public function __construct($namespaces = null, $prepend = false)
+	{
+		if (is_array($namespaces)) {
+			$this->namespaces = $namespaces;
+		}
+
+		spl_autoload_register(array($this, 'load'), true, $prepend);
+	}
+
+	/**
+	 * Autoloader the class either using a class map or via conversion of 
+	 * class name to file.
+	 * 
+	 * @param string $class
+	 */
+	public function load($class)
+	{
+		if (isset($this->class_map[$class])) {
+			$file = $this->class_map[$class];
+		}
+		else {
+			foreach ($this->namespaces as $namespace => $dir) {
+				if (strpos($class, $namespace) !== false) {
+					$file = $this->get_file_path($class, $namespace, $dir);
+					break;	
+				}
+			}
+		}
+
+		if (!empty($file)) {
+			require_once $file;
+		}
+	}
+
+	/**
+	 * Get file path to include.
+	 * 
+	 * Examples:
+	 * 
+	 *  Bunyad_Theme_Foo_Bar to inc/foo/bar/bar.php (fallback to inc/foo/bar.php)
+	 *  Bunyad\Blocks\FooBar to blocks/foo-bar/foo-bar.php (fallback to inc/foo-bar.php)
+	 * 
+	 * @return string  Relative path to the file from the theme dir
+	 */
+	public function get_file_path($class, $prefix = '', $path = '') 
+	{
+		// Remove namespace and convert underscore as a namespace delim.
+		$class = str_replace($prefix, '', $class);
+		$class = str_replace('_', '\\', $class);
+		
+		// Split to convert CamelCase.
+		$parts = explode('\\', $class);
+		foreach ($parts as $key => $part) {
+			
+			$test = substr($part, 1); 
+					
+			// Convert CamelCase to Camel-Case
+			if (strtolower($test) !== $test) {
+				$part = preg_replace('/(.)(?=[A-Z])/u', '$1-', $part);
+			}
+
+			$parts[$key] = $part;
+		}
+
+		$name = strtolower(array_pop($parts));
+		$path = $path . '/' . strtolower(
+			implode('/', $parts)
+		);
+		$path = trailingslashit($path);
+
+		// Preferred and fallback file path.
+		$pref_file = $path . "{$name}/{$name}.php";
+		$alt_file  = $path . "{$name}.php";
+		
+		// Try with directory path pattern first.
+		if (file_exists($pref_file)) {
+			return $pref_file;
+		}
+		else if (file_exists($alt_file)) {
+			return $alt_file;
+		}
+	}
+}