extract generator methods (#130)

Co-authored-by: Jan Teriete <jt@clickbits.de>

src/Generator/DefaultGenerator.php

@@ -17,19 +17,9 @@ public function make($name, $length = 2, $uppercase = false, $ascii = false, $rt
 
         // if name contains single word, use first N character
         if ($words->count() === 1) {
-            $initial = (string) $words->first();
-
-            if (strlen($this->name) >= $length) {
-                $initial = Str::substr($this->name, 0, $length);
-            }
+            $initial = $this->getInitialFromOneWord($words, $length);
         } else {
-            // otherwise, use initial char from each word
-            $initials = new Collection();
-            $words->each(function ($word) use ($initials) {
-                $initials->push(Str::substr($word, 0, 1));
-            });
-
-            $initial = $initials->slice(0, $length)->implode('');
+            $initial = $this->getInitialFromMultipleWords($words, $length);
         }
 
         if ($uppercase) {
@@ -43,7 +33,7 @@ public function make($name, $length = 2, $uppercase = false, $ascii = false, $rt
         return $initial;
     }
 
-    private function setName($name, $ascii)
+    protected function setName($name, $ascii)
     {
         if (is_array($name)) {
             throw new \InvalidArgumentException(
@@ -66,4 +56,31 @@ private function setName($name, $ascii)
 
         $this->name = $name;
     }
+
+    protected function getInitialFromOneWord($words, $length)
+    {
+        $initial = (string)$words->first();
+
+        if (strlen($this->name) >= $length) {
+            $initial = Str::substr($this->name, 0, $length);
+        }
+
+        return $initial;
+    }
+
+    protected function getInitialFromMultipleWords($words, $length)
+    {
+        // otherwise, use initial char from each word
+        $initials = new Collection();
+        $words->each(function ($word) use ($initials) {
+            $initials->push(Str::substr($word, 0, 1));
+        });
+
+        return $this->selectInitialFromMultipleInitials($initials, $length);
+    }
+
+    protected function selectInitialFromMultipleInitials($initials, $length)
+    {
+        return $initials->slice(0, $length)->implode('');
+    }
 }