Use composer PHP script for PHP_CS setup

composer.json

@@ -32,8 +32,7 @@
   },
   "scripts": {
     "set-phpcs-paths": [
-      "[ $COMPOSER_DEV_MODE -eq 0 ] || vendor/bin/phpcs --config-set installed_paths vendor/phpcompatibility/php-compatibility,vendor/magento-ecg/coding-standard",
-      "[ $COMPOSER_DEV_MODE -eq 0 ] || vendor/bin/phpcs -i"
+      "OpenMage\\Scripts\\Composer\\SetupPhpCs::run"
     ],
     "post-install-cmd": [
       "@set-phpcs-paths"
@@ -74,6 +73,9 @@
   "autoload-dev": {
     "psr-4": { "OpenMage\\Tests\\Unit\\": "dev/tests/unit" }
   },
+  "autoload": {
+    "psr-4": { "OpenMage\\Scripts\\Composer\\": "dev/scripts/composer" }
+  },
   "extra": {
     "branch-alias": {
       "dev-main": "1.9.4.x-dev"

dev/scripts/composer/ScriptInterface.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace OpenMage\Scripts\Composer;
+
+use Composer\Script\Event;
+
+interface ScriptInterface
+{
+    public static function run(Event $event);
+}

dev/scripts/composer/SetupPhpCs.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace OpenMage\Scripts\Composer;
+
+use Composer\Script\Event;
+
+class SetupPhpCs implements ScriptInterface
+{
+    /** @var Composer\Composer $composer */
+    static $composer;
+
+    /** @var string $vendorPath */
+    static $vendorPath;
+
+    /** @var string $binPath */
+    static $binPath;
+
+    private static function init(Event $event)
+    {
+        self::$composer = $event->getComposer();
+        self::$vendorPath = self::$composer->getConfig()->get('vendor-dir');
+        self::$binPath = self::$composer->getConfig()->get('bin-dir');
+    }
+
+    /**
+     * Setup PHP_CodeSniffer Environment
+     *
+     * @param Event $event
+     */
+    public static function run(Event $event)
+    {
+        self::init($event);
+
+        if ($event->isDevMode() === false) {
+            return;
+        }
+
+        if (!function_exists('exec')) {
+            echo "exec() has been disabled for security reasons, skipping...\n";
+            return;
+        }
+
+        $phpcs = PHP_BINARY . ' ' . self::$binPath . DIRECTORY_SEPARATOR . 'phpcs';
+
+        $paths = implode(',', [
+            self::$vendorPath . '/phpcompatibility/php-compatibility',
+            self::$vendorPath . '/magento-ecg/coding-standard',
+        ]);
+
+        $output = [];
+
+        exec("$phpcs --config-set installed_paths $paths", $output);
+        exec("$phpcs -i", $output);
+
+        echo implode("\n", $output) . "\n";
+    }
+}