From 5036bf6a9b5fe212b0f10c76cb410a240f003a23 Mon Sep 17 00:00:00 2001
From: QWp6t <QWp6t@users.noreply.github.com>
Date: Mon, 31 Aug 2020 09:21:16 -0700
Subject: [PATCH] fix(autoload): register fallback autoload as needed (#255)

x-ref #254
---
 CHANGELOG.md     |  3 +++
 soil.php         | 10 +++++++---
 src/autoload.php | 13 +++++++++++++
 3 files changed, 23 insertions(+), 3 deletions(-)
 create mode 100644 src/autoload.php

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d568d0d..b7b5c0b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+### 4.0.1: August 31st, 2020
+* Add fallback autoloader when Composer isn't present
+
 ### 4.0.0: August 29th, 2020
 * BREAKING CHANGE - Refactor entire code base
 * Add options support for modules
diff --git a/soil.php b/soil.php
index e43b0883..5c404d71 100644
--- a/soil.php
+++ b/soil.php
@@ -4,7 +4,7 @@
  * Plugin Name:        Soil
  * Plugin URI:         https://roots.io/plugins/soil/
  * Description:        A collection of modules to apply theme-agnostic front-end modifications to WordPress.
- * Version:            4.0.0
+ * Version:            4.0.1
  * Author:             Roots
  * Author URI:         https://roots.io/
  * GitHub Plugin URI:  https://github.com/roots/soil
@@ -15,9 +15,13 @@
 
 namespace Roots\Soil;
 
-require_once __DIR__ . '/vendor/autoload.php';
-
 add_action('plugins_loaded', function () {
+    if (!class_exists(Soil::class)) {
+        require_once file_exists($autoloader = __DIR__ . '/vendor/autoload.php')
+            ? $autoloader
+            : __DIR__ . '/src/autoload.php';
+    }
+
     $modules = Soil::discoverModules();
 
     add_action('after_setup_theme', new Soil($modules), 100);
diff --git a/src/autoload.php b/src/autoload.php
new file mode 100644
index 00000000..12767a22
--- /dev/null
+++ b/src/autoload.php
@@ -0,0 +1,13 @@
+<?php
+
+require_once __DIR__ . '/helpers.php';
+
+spl_autoload_register(function ($className) {
+    $relativeClassName = array_slice(explode('\\', $className), 2);
+    $file = __DIR__ . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, $relativeClassName) . '.php';
+    if (file_exists($file)) {
+        require $file;
+        return true;
+    }
+    return false;
+});