Support for .docheader file.

src/Config.php

@@ -19,12 +19,21 @@ final class Config extends PhpCsFixerConfig
      */
     private $cache;
 
+    /**
+     * @var array|null
+     */
+    private $composerConfig;
 
     /**
      * @var string
      */
     private $cacheFile = '.php_cs.commit-cache';
 
+    /**
+     * @var string
+     */
+    private $docHeaderfile = '.docheader';
+
     /**
      * Config constructor.
      */
@@ -44,6 +53,16 @@ final class Config extends PhpCsFixerConfig
         $this->cacheFile = $cacheFile;
     }
 
+    /**
+     * Set docHeaderfile.
+     *
+     * @param string $docHeaderfile
+     */
+    public function setDocHeaderfile($docHeaderfile)
+    {
+        $this->docHeaderfile = $docHeaderfile;
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -91,9 +110,28 @@ final class Config extends PhpCsFixerConfig
      */
     private function headerComment()
     {
-        $header = "Copyright (C) %yearRange% IRSTEA\nAll rights reserved.";
-        // TODO: load a template from a local file.
-        return str_replace('%yearRange%', $this->getYearRange(), $header);
+        $header = "Create and customize a file named {$this->docHeaderfile} at the root of the project to change this message.";
+
+        if (file_exists($this->docHeaderfile)) {
+            $header = trim(file_get_contents($this->docHeaderfile));
+        }
+
+        return str_replace(['%yearRange%', '%package%'], [$this->getYearRange(), $this->findPackageName()], $header);
+    }
+
+    /**
+     * @return string|null
+     */
+    private function findPackageName()
+    {
+        return $this->memoize(
+            'package-name',
+            function () {
+                $config = $this->getComposerConfig();
+
+                return isset($config['name']) ? $config['name'] : null;
+            }
+        );
     }
 
     /**
@@ -135,12 +173,10 @@ final class Config extends PhpCsFixerConfig
         return $this->memoize(
             'php-req',
             function () {
-                if (file_exists('composer.json')) {
-                    $data = json_decode(file_get_contents('composer.json'), true);
-                    if (is_array($data) && isset($data['require']['php'])) {
-                        if (preg_match('/(?:>=?|\^|~)\s*([57]\.\d)/', $data['require']['php'], $groups)) {
-                            return (float)$groups[1];
-                        }
+                $config = $this->getComposerConfig();
+                if (isset($config['require']['php'])) {
+                    if (preg_match('/(?:>=?|\^|~)\s*([57]\.\d)/', $config['require']['php'], $groups)) {
+                        return (float) $groups[1];
                     }
                 }
 
@@ -149,6 +185,26 @@ final class Config extends PhpCsFixerConfig
         );
     }
 
+    /**
+     * @return array
+     */
+    private function getComposerConfig()
+    {
+        if ($this->composerConfig !== null) {
+            return $this->composerConfig;
+        }
+        $this->composerConfig = [];
+
+        if (file_exists('composer.json')) {
+            $data = json_decode(file_get_contents('composer.json'), true);
+            if (is_array($data)) {
+                $this->composerConfig = $data;
+            }
+        }
+
+        return $this->composerConfig;
+    }
+
     /**
      * @param string   $key
      * @param callable $generator