[BUGFIX] Make editor-config work in environments using symfony/consol…

…e in version 4

Which does not support the SingleCommandApplication used by this application.

.build/php-cs-rules.php

@@ -5,6 +5,7 @@
 }
 $finder = PhpCsFixer\Finder::create()
     ->in(__DIR__ . '/../src/')
+    ->notName('SingleCommandApplication.php')
 ;
 
 return (new PhpCsFixer\Config())

.build/phpstan.neon

@@ -6,5 +6,6 @@ parameters:
     paths:
         - ../src
     excludePaths:
+        - ../src/Compatibility
         - ../src/Compiler.php
     checkMissingIterableValueType: false

src/Application.php

@@ -4,6 +4,7 @@
 
 namespace Armin\EditorconfigCli;
 
+use Armin\EditorconfigCli\Compatibility\SingleCommandApplication;
 use Armin\EditorconfigCli\EditorConfig\Rules\FileResult;
 use Armin\EditorconfigCli\EditorConfig\Scanner;
 use Armin\EditorconfigCli\EditorConfig\Utility\FinderUtility;
@@ -13,7 +14,6 @@
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\Output;
-use Symfony\Component\Console\SingleCommandApplication;
 use Symfony\Component\Console\Style\SymfonyStyle;
 use Symfony\Component\Finder\Finder;
 

src/Compatibility/SingleCommandApplication.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace Armin\EditorconfigCli\Compatibility;
+
+use Symfony\Component\Console\Application;
+
+/*
+ * NOTE
+ * ----
+ * This file has been copied from symfony/console in version 5.2.8
+ * as backport, for installations using version ^4
+ *
+ * All lines, but the original namespace, remained untouched.
+ * ----
+ */
+
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+// namespace Symfony\Component\Console;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+
+/**
+ * @author Grégoire Pineau <[email protected]>
+ */
+class SingleCommandApplication extends Command
+{
+    private $version = 'UNKNOWN';
+    private $autoExit = true;
+    private $running = false;
+
+    public function setVersion(string $version): self
+    {
+        $this->version = $version;
+
+        return $this;
+    }
+
+    /**
+     * @final
+     */
+    public function setAutoExit(bool $autoExit): self
+    {
+        $this->autoExit = $autoExit;
+
+        return $this;
+    }
+
+    public function run(InputInterface $input = null, OutputInterface $output = null): int
+    {
+        if ($this->running) {
+            return parent::run($input, $output);
+        }
+
+        // We use the command name as the application name
+        $application = new Application($this->getName() ?: 'UNKNOWN', $this->version);
+        $application->setAutoExit($this->autoExit);
+        // Fix the usage of the command displayed with "--help"
+        $this->setName($_SERVER['argv'][0]);
+        $application->add($this);
+        $application->setDefaultCommand($this->getName(), true);
+
+        $this->running = true;
+        try {
+            $ret = $application->run($input, $output);
+        } finally {
+            $this->running = false;
+        }
+
+        return $ret ?? 1;
+    }
+}