add Body::findLinks method

src/Gemtext/Body.php

@@ -83,4 +83,26 @@ class Body
 
         return $matches;
     }
+
+    public function findLinks(string $protocol = 'gemini'): array
+    {
+        $matches = [];
+
+        foreach ($this->_lines as $line)
+        {
+            if (preg_match('/' . $protocol . ':\/\/(.*)[\s\S\'"]*/', trim($line), $match))
+            {
+                $matches[] =
+                sprintf(
+                    '%s://%s',
+                    $protocol,
+                    trim(
+                        $match[1]
+                    )
+                );
+            }
+        }
+
+        return $matches;
+    }
 }