From d3878d717ccd22de8cc393b87301e45f994f7ab6 Mon Sep 17 00:00:00 2001
From: Michael Vogel <icarus@dabo.de>
Date: Mon, 2 Jun 2014 23:45:32 +0200
Subject: [PATCH] bbcode: new element "attachment" for attached links.

---
 include/bbcode.php | 76 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)

diff --git a/include/bbcode.php b/include/bbcode.php
index 4ccab8db5d..d6fc81983f 100644
--- a/include/bbcode.php
+++ b/include/bbcode.php
@@ -2,6 +2,79 @@
 require_once("include/oembed.php");
 require_once('include/event.php');
 
+function bb_attachment($Text, $plaintext = false, $tryoembed = true) {
+	$Text = preg_replace_callback("/\[attachment(.*?)\](.*?)\[\/attachment\]/ism",
+		function ($match) use ($plaintext){
+
+		        $attributes = $match[1];
+
+		        $type = "";
+		        preg_match("/type='(.*?)'/ism", $attributes, $matches);
+		        if ($matches[1] != "")
+		                $type = $matches[1];
+
+		        preg_match('/type="(.*?)"/ism', $attributes, $matches);
+		        if ($matches[1] != "")
+		                $type = $matches[1];
+
+		        if ($type == "")
+		                return($match[0]);
+
+		        if (!in_array($type, array("link", "audio", "video")))
+		                return($match[0]);
+
+		        $url = "";
+		        preg_match("/url='(.*?)'/ism", $attributes, $matches);
+		        if ($matches[1] != "")
+		                $url = $matches[1];
+
+		        preg_match('/url="(.*?)"/ism', $attributes, $matches);
+		        if ($matches[1] != "")
+		                $url = $matches[1];
+
+		        $title = "";
+		        preg_match("/title='(.*?)'/ism", $attributes, $matches);
+		        if ($matches[1] != "")
+		                $title = $matches[1];
+
+		        preg_match('/title="(.*?)"/ism', $attributes, $matches);
+		        if ($matches[1] != "")
+		                $title = $matches[1];
+
+		        $image = "";
+		        preg_match("/image='(.*?)'/ism", $attributes, $matches);
+		        if ($matches[1] != "")
+		                $image = $matches[1];
+
+		        preg_match('/image="(.*?)"/ism', $attributes, $matches);
+		        if ($matches[1] != "")
+		                $image = $matches[1];
+
+			if ($plaintext)
+				$text = sprintf('<a href="%s" target="_blank">%s</a>', $url, $title);
+			else {
+			        $text = sprintf('<span class="type-%s">', $type);
+
+			        $bookmark = array(sprintf('[bookmark=%s]%s[/bookmark]', $url, $title), $title, $url);
+				if ($tryoembed)
+				        $oembed = tryoembed($bookmark);
+				else
+					$oembed = $bookmark[0];
+
+			        if (($image != "") AND !strstr(strtolower($oembed), "<img "))
+			                $text .= sprintf('<img src="%s" alt="%s" />', $image, $title); // To-Do: Anführungszeichen in "alt"
+
+			        $text .= $oembed;
+
+			        $text .= sprintf('<blockquote>%s</blockquote></span>', trim($match[2]));
+			}
+
+		        return($text);
+		},$Text);
+
+        return($Text);
+}
+
 function bb_rearrange_link($shared) {
 	if ($shared[1] != "type-link")
 		return($shared[0]);
@@ -706,6 +779,9 @@ function bbcode($Text,$preserve_nl = false, $tryoembed = true, $simplehtml = fal
 	$Text = preg_replace("/\n\[code\]/ism", "[code]", $Text);
 	$Text = preg_replace("/\[\/code\]\n/ism", "[/code]", $Text);
 
+	// Handle attached links or videos
+	$Text = bb_attachment($Text, ($simplehtml != 4) AND ($simplehtml != 0), $tryoembed);
+
 	// Rearrange shared links
 	if (get_config("system", "rearrange_shared_links") AND (!$simplehtml OR $tryoembed))
 		$Text = preg_replace_callback("(\[class=(.*?)\](.*?)\[\/class\])ism","bb_rearrange_link",$Text);