Restructure theme, use autoloader

app/lib/Sage/Template/Wrapper.php

@@ -0,0 +1,48 @@
+<?php namespace Roots\Sage\Template;
+
+/**
+ * Interface Wrapper
+ * @package Roots\Sage
+ * @author QWp6t
+ */
+class Wrapper implements IWrapper {
+  /** @var string Wrapper slug */
+  protected $slug;
+
+  /** @var string Template file that is being wrapped */
+  protected $template = '';
+
+  /** @var string[] Array of template wrappers; e.g., `base-singular.php`, `base-page.php`, `base.php` */
+  protected $wrappers = [];
+
+  /**
+   * Wrapper constructor
+   *
+   * @param string $templateSlug Template slug, typically from Template Heirarchy; e.g., `page`, `single`, `singular`
+   * @param string $base Wrapper's base template, this is what will wrap around $template
+   */
+  public function __construct($templateSlug, $base = 'layouts/base.php') {
+    $this->slug = sanitize_title(basename($base, '.php'));
+    $this->wrappers = [$base];
+    $this->template = $templateSlug;
+    $str = substr($base, 0, -4);
+    array_unshift($this->wrappers, sprintf($str . '-%s.php', $templateSlug));
+  }
+
+  /** {@inheritdoc} */
+  public function getWrappers() {
+    $this->wrappers = apply_filters('sage/wrap_' . $this->slug, $this->wrappers) ?: $this->wrappers;
+    return $this->wrappers;
+  }
+
+  /** {@inheritdoc} */
+  public function getSlug() {
+    return $this->slug;
+  }
+
+  /** {@inheritdoc} */
+  public function getTemplate()
+  {
+    return $this->template;
+  }
+}