From 6a656fe2671f868f15eb54548a870a2668c4285d Mon Sep 17 00:00:00 2001
From: Jonatas Miguel <jonatas.df.miguel@gmail.com>
Date: Mon, 6 Aug 2012 12:37:48 +0100
Subject: Moved callback routing feature to a sustom MY_Router.php class.

---
 application/core/MY_Router.php | 62 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 application/core/MY_Router.php

(limited to 'application')

diff --git a/application/core/MY_Router.php b/application/core/MY_Router.php
new file mode 100644
index 000000000..2a20f579f
--- /dev/null
+++ b/application/core/MY_Router.php
@@ -0,0 +1,62 @@
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+
+class MY_Router extends CI_Router {
+    /**
+     * This version of _parse_routes acts the same as the older version
+     *     except that it now allows for callbacks to be used as an alternative
+     *     to the original route styles. Backreferences are set to the
+     *     parameters of the callback. Note: Remember to give default values to
+     *     the parameters that can be empty.
+     */
+    function _parse_routes()
+    {
+        // Turn the segment array into a URI string
+        $uri = implode('/', $this->uri->segments);
+
+        // Is there a literal match?  If so we're done
+        if (isset($this->routes[$uri]))
+        {
+            return $this->_set_request(explode('/', $this->routes[$uri]));
+        }
+
+        // Loop through the route array looking for wild-cards
+        foreach ($this->routes as $key => $val)
+        {
+            // Convert wild-cards to RegEx
+            $key = str_replace(':any', '.+', str_replace(':num', '[0-9]+', $key));
+
+            // Does the RegEx match?
+            if (preg_match('#^'.$key.'$#', $uri))
+            {
+                // Are we using a callback?
+                $callable = is_callable($val);
+
+                // Determine the appropriate preg_replace to use.
+                $preg_replace_type = $callable? 'preg_replace_callback': 'preg_replace';
+
+                // Are we using callbacks to process the matches?
+                if($callable){
+                    $val = function($matches)use($val){
+                        // Remove the string we are matching against from the matches array.
+                        array_shift($matches);
+
+                        // Distribute the matches to the arguments of the user's callback.
+                        return call_user_func_array($val, $matches);
+                    };
+                }
+
+                // Do we have a back-reference?
+                if ($callable OR (strpos($val, '$') !== FALSE AND strpos($key, '(') !== FALSE))
+                {
+                    $val = call_user_func($preg_replace_type, '#^'.$key.'$#', $val, $uri);
+                }
+
+                return $this->_set_request(explode('/', $val));
+            }
+        }
+
+        // If we got this far it means we didn't encounter a
+        // matching route so we'll set the site default route
+        $this->_set_request($this->uri->segments);
+    }
+}
\ No newline at end of file
-- 
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