From ba7f377290a7d0b38bce56bd4bc3aa1bc8d0aab4 Mon Sep 17 00:00:00 2001
From: Emanuil Rusev <hello@erusev.com>
Date: Wed, 5 Feb 2014 14:03:23 +0200
Subject: [PATCH] resolve #88, resolve #81

---
 Parsedown.php | 65 +++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 58 insertions(+), 7 deletions(-)

diff --git a/Parsedown.php b/Parsedown.php
index efb11dc..30444b0 100755
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -426,18 +426,69 @@ class Parsedown
 
                     # reference
 
-                    if (preg_match('/^\[(.+?)\]:[ ]*(.+?)(?:[ ]+[\'"](.+?)[\'"])?[ ]*$/', $outdented_line, $matches))
+                    $position = strpos($outdented_line, ']:');
+
+                    if ($position)
                     {
-                        $label = strtolower($matches[1]);
+                        $reference = array();
 
-                        $this->reference_map[$label] = array(
-                            '»' => trim($matches[2], '<>'),
-                        );
+                        $label = substr($outdented_line, 1, $position - 1);
 
-                        if (isset($matches[3]))
+                        $substring = substr($outdented_line, $position + 2);
+                        $substring = trim($substring);
+
+                        if ($substring[0] === '<')
                         {
-                            $this->reference_map[$label]['#'] = $matches[3];
+                            $position = strpos($substring, '>');
+
+                            if ($position === false)
+                            {
+                                break;
+                            }
+
+                            $reference['»'] = substr($substring, 1, $position - 1);
+
+                            $substring = substr($substring, $position + 1);
                         }
+                        else
+                        {
+                            $position = strpos($substring, ' ');
+
+                            if ($position === false)
+                            {
+                                $reference['»'] = $substring;
+
+                                $substring = false;
+                            }
+                            else
+                            {
+                                $reference['»'] = substr($substring, 0, $position);
+
+                                $substring = substr($substring, $position + 1);
+                            }
+                        }
+
+                        if ($substring !== false)
+                        {
+                            $last_char = substr($substring, -1);
+
+                            switch (true)
+                            {
+                                case $substring[0] === '"' and $substring[0] === $last_char:
+                                case $substring[0] === "'" and $substring[0] === $last_char:
+                                case $substring[0] === '(' and $last_char === ')':
+
+                                    $reference['#'] = substr($substring, 1, -1);
+
+                                    break;
+
+                                default:
+
+                                    break 2;
+                            }
+                        }
+
+                        $this->reference_map[$label] = $reference;
 
                         continue 2;
                     }