From af27365b6bf1a3800020783f24108a091bce5eb1 Mon Sep 17 00:00:00 2001
From: Fred Emmott <fe@fb.com>
Date: Tue, 26 Sep 2017 10:28:49 -0700
Subject: [PATCH] Search recursively upwards for an autoloader

---
 bin/hhast-lint | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/bin/hhast-lint b/bin/hhast-lint
index d6f744958..0dc1cabf8 100755
--- a/bin/hhast-lint
+++ b/bin/hhast-lint
@@ -13,6 +13,26 @@
 
 namespace Facebook\HHAST\__Private;
 
-require_once(__DIR__.'/../vendor/hh_autoload.php');
+$root = realpath(__DIR__.'/..');
+$found_autoloader = false;
+while (true) {
+  $autoloader = $root.'/vendor/hh_autoload.php';
+  if (file_exists($autoloader)) {
+    $found_autoloader = true;
+    require_once($autoloader);
+    break;
+  }
+  if ($root === '') {
+    break;
+  }
+  $parts = explode('/', $root);
+  array_pop($parts);
+  $root = implode('/', $parts);
+}
+
+if (!$found_autoloader) {
+  fprintf(STDERR, "Failed to find autoloader.\n");
+  exit(1);
+}
 
 exit(\HH\Asio\join((new LinterCLI(vec($argv)))->mainAsync()));