autoload Reader classes from a custom folder

src/Util/Logfile/AbstractReader.php

@@ -8,6 +8,8 @@
  */
 namespace UAParser\Util\Logfile;
 
+use Symfony\Component\Finder\Finder;
+use Symfony\Component\Finder\SplFileInfo;
 use UAParser\Exception\ReaderException;
 
 abstract class AbstractReader implements ReaderInterface
@@ -34,11 +36,34 @@ private static function getReaders()
             return static::$readers;
         }
 
+        static::$readers = static::getCustomReaders();
         static::$readers[] = new ApacheCommonLogFormatReader();
 
         return static::$readers;
     }
 
+    public static function autoloadCustomReaders($clazz)
+    {
+        $parts = explode('\\', $clazz);
+        $path = __DIR__.DIRECTORY_SEPARATOR.'Custom'.DIRECTORY_SEPARATOR.end($parts).'.php';
+        if (is_file($path)) {
+            require $path;
+        }
+    }
+
+    private static function getCustomReaders()
+    {
+        $finder = Finder::create()->in(__DIR__.DIRECTORY_SEPARATOR.'Custom');
+        $finder->name('*.php');
+
+        $readers = array();
+        foreach ($finder as $file) {
+            $clazz = __NAMESPACE__.'\\Custom\\'.$file->getBasename('.php');
+            $readers[] = new $clazz;
+        }
+	return $readers;
+    }
+
     public function test($line)
     {
         $matches = $this->match($line);
@@ -68,3 +93,5 @@ protected function match($line)
 
     abstract protected function getRegex();
 }
+
+spl_autoload_register(array('UAParser\Util\Logfile\AbstractReader','autoloadCustomReaders'));

src/Util/Logfile/Custom/NginxCustomLogFormatReader.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * ua-parser
+ *
+ * Copyright (c) 2011-2012 Dave Olsen, http://dmolsen.com
+ *
+ * Released under the MIT license
+ */
+namespace UAParser\Util\Logfile\Custom;
+
+use UAParser\Util\Logfile\AbstractReader;
+
+class NginxCustomLogFormatReader extends AbstractReader
+{
+    protected function getRegex()
+    {
+        return '@^
+            \[(?:[^:]+):(?:\d+:\d+:\d+) \s+ (?:[^\]]+)\]            # Date/time
+            \s+
+            (?:\S+)
+            \s+
+            (?:\S+)                                                 # IP
+            \s+
+            (?:\S+)
+            \s+
+            (?:\S+)
+            \s+
+            (?:\S+)
+            \s+
+            \"(?:\S+)\s(?:.*?)                                      # Verb
+            \s+
+            (?:\S+)\"                                               # Path
+            \s+
+            (?:\S+)                                                 # Response
+            \s+
+            (?:\S+)                                                 # Length
+            \s+
+            (?:\".*?\")                                             # Referrer
+            \s+
+            \"(?P<userAgentString>.*?)\"                            # User Agent
+            \s+
+            \"(?:\S+)\"
+        $@x';
+    }
+}