Fix the URL matcher

app/Hook/ClickableHook.php

@@ -0,0 +1,115 @@
+<?php
+/**
+ * @copyright   2006-2014, Miles Johnson - http://milesj.me
+ * @license     https://github.com/milesj/decoda/blob/master/license.md
+ * @link        http://milesj.me/code/php/decoda
+ */
+
+namespace App\Hook;
+
+use Decoda\Hook\AbstractHook;
+
+/**
+ * Converts URLs and emails (not wrapped in tags) into clickable links.
+ */
+class ClickableHook extends AbstractHook {
+
+    /**
+     * Matches a link or an email, and converts it to an anchor tag.
+     *
+     * @param string $content
+     * @return string
+     */
+    public function beforeParse($content) {
+        $parser = $this->getParser();
+
+        // To make sure we won't parse links inside [url] or [img] tags, we'll first replace all urls/imgs with uniqids
+        // and keep them in this array, and restore them at the end, after parsing
+        $ignoredStrings = array();
+
+        // The tags we won't touch
+        // For example, neither [url="http://www.example.com"] nor [img]http://www.example.com[/img] will be replaced.
+        $ignoredTags = array('url', 'link', 'img', 'image');
+
+        $i = 0;
+        foreach ($ignoredTags as $tag) {
+            if (preg_match_all(sprintf('/\[%s[\s=\]].*?\[\/%s\]/is', $tag, $tag), $content, $matches, PREG_SET_ORDER)) {
+                $matches = array_unique(array_map(function($x) { return $x[0]; }, $matches));
+
+                foreach ($matches as $val) {
+                    $uniqid = uniqid($i++);
+
+                    $ignoredStrings[$uniqid] = $val;
+                    $content = str_replace($val, $uniqid, $content);
+                }
+            }
+        }
+
+        if ($parser->hasFilter('Url')) {
+            $protocols = $parser->getFilter('Url')->getConfig('protocols');
+            $chars = preg_quote('-_=+|\;:&?/[]%,.!@#$*(){}"\'', '/');
+
+            $result = "";
+            foreach (explode(" ", $content) as $v) {
+                if (substr($v, 0, strlen("http://") === "http://") || substr($v, 0, strlen("https://")) === "https://") {
+                    $result .= "[url]" . $v . "[/url]";
+                } else {
+                    $result .= $v;
+                }
+                $result .= " ";
+            }
+
+            if (strlen($result) > 0) {
+                $result = substr($result, 0, -1);
+            }
+
+            $content = $result;
+        }
+
+        // Based on W3C HTML5 spec: https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
+        if ($parser->hasFilter('Email')) {
+            $pattern = '(:\/\/[\w\.\+]+:)?([a-z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(?:\.[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?)*)';
+
+            $content = preg_replace_callback('/' . $pattern . '/i', array($this, '_emailCallback'), $content);
+        }
+
+        // We restore the tags we ommited
+        foreach ($ignoredStrings as $key => $val) {
+            $content = str_replace($key, $val, $content);
+        }
+
+        return $content;
+    }
+
+    /**
+     * Callback for email processing.
+     *
+     * @param array $matches
+     * @return string
+     */
+    protected function _emailCallback($matches) {
+        // is like http://user:pass@domain.com ? Then we do not touch it.
+        if ($matches[1]) {
+            return $matches[0];
+        }
+
+        return $this->getParser()->getFilter('Email')->parse(array(
+            'tag' => 'email',
+            'attributes' => array()
+        ), trim($matches[2]));
+    }
+
+    /**
+     * Callback for URL processing.
+     *
+     * @param array $matches
+     * @return string
+     */
+    protected function _urlCallback($matches) {
+        return $this->getParser()->getFilter('Url')->parse(array(
+            'tag' => 'url',
+            'attributes' => array()
+        ), trim($matches[1]));
+    }
+
+}

app/Shoutbox.php

@@ -14,6 +14,7 @@
 
 use Illuminate\Database\Eloquent\Model;
 use Decoda\Decoda;
+use App\Hook\ClickableHook;
 
 class Shoutbox extends Model
 {
@@ -40,6 +41,8 @@ public static function getMessageHtml($message)
     {
         $code = new Decoda($message);
         $code->defaults();
+        $code->removeHook('Clickable');
+        $code->addHook(new ClickableHook());
         $code->setXhtml(false);
         $code->setStrict(false);
         $code->setLineBreaks(true);