From 1bd0468812d10ff24123382d41270fb5eb89835d Mon Sep 17 00:00:00 2001
From: Tom Doggett <nocoolnametom@gmail.com>
Date: Fri, 26 Oct 2018 10:14:32 +0100
Subject: [PATCH] Change autoloader requirement for bin file

Now the autoloader can be found within the repo itself, within a project dependency, or within a globally required copy.

To be honest, the code is just copied from a number of similar bin-providing composer projects.
---
 bin/composer2nix | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/bin/composer2nix b/bin/composer2nix
index 40fd8fe..99c2fdf 100755
--- a/bin/composer2nix
+++ b/bin/composer2nix
@@ -1,6 +1,27 @@
 #!/usr/bin/env php
 <?php
-require_once(dirname(__FILE__)."/../vendor/autoload.php");
+
+$autoloadLocations = [
+	getcwd() . '/vendor/autoload.php',
+	getcwd() . '/../../autoload.php',
+	__DIR__ . '/../vendor/autoload.php',
+	__DIR__ . '/../../../autoload.php',
+];
+$loaded = false;
+foreach ($autoloadLocations as $autoload) {
+	if (is_file($autoload)) {
+		require_once($autoload);
+		$loaded = true;
+	}
+}
+if (!$loaded) {
+	fwrite(STDERR,
+		'You must set up the project dependencies, run the following commands:' . PHP_EOL .
+		'curl -s http://getcomposer.org/installer | php' . PHP_EOL .
+		'php composer.phar install' . PHP_EOL
+	);
+	exit(1);
+}
 
 use Composer2Nix\Composer;
 use Composer2Nix\Generator;