How do you script BB Code?

[Jaxel]

Okay... lets say I want to make a bbcode... [VIDEO]536[/VIDEO]

I want to parse some PHP code on this code. How would I handle this?

PHP Code:

function fetch_bbcode_video($videoid)
{
 require_once(DIR . '/includes/class_videosharingservice.php');
 global $vbphrase, $vbulletin, $show, $stylevar;
 if (!$videoinfo = $vbulletin->db->query_first("
  SELECT video.* 
  FROM " . TABLE_PREFIX . "video AS video 
  WHERE video.videoid = '" . $videoid . "'")
 )
 {
  return false;
 }
 $classname = "vB_VideoSharingService_$video[videoservice]";
 $obj = new $classname($vbulletin);
 $embedcode = $obj->fetch_embedcode($videoinfo['videoidservice']);
 $video['cattitle'] =& $vbulletin->videocats["$video[videocategoryid]"]['title'];
 $video['caturl'] = construct_category_url($vbulletin->videocats["$video[videocategoryid]"]);
 $video['url'] = construct_video_url($video);
 $video['userurl'] = construct_user_url($video);
 if ($video['timelength'] == 0)
 {
  $video['timelength'] = "???";
 }
 else
 {
  $duration = $video['timelength'];
  $minutes = floor($duration / 60);
  $seconds = $duration % 60;
  $seconds = str_pad($seconds, 2, "0", STR_PAD_LEFT); 
  $video['timelength'] = "$minutes:$seconds";
 }
 eval('$html = "' . fetch_template('bbcode_video') . '";');
 return $html;
} 


[Jaxel]

Okay... since no one knows how to script BB code... how about something different...

How would I make a script that examines a new post and preg_matches a thread and replaces it with content? So if someone made a post and it had:

[VIDEO]536[/VIDEO]

I would want it to preg_match it with:

\[(VIDEO|video)](\d*)\[/(VIDEO|video)]

Then of course, I would run some PHP code on the preg_match[2] returned as 536.

Would this be possible?

[Bellardia]

Originally Posted by Jaxel

Okay... since no one knows how to script BB code... how about something different...

How would I make a script that examines a new post and preg_matches a thread and replaces it with content? So if someone made a post and it had:

[VIDEO]536[/VIDEO]

I would want it to preg_match it with:

\[(VIDEO|video)]([\d]*)\[/(VIDEO|video)]

Then of course, I would run some PHP code on the preg_match[2] returned as 536.

Would this be possible?

I posted this in another thread a bit earlier, it should help you out

You'll require two plugins for this. I posted their source as xml just because it included everything. Just pay particular attention to the hook location and the basic functions I included.

This one will take the text to be posted, and submit it to a function so can it can be run through a preg_replace or similar function.

<plugin active="1" executionorder="5">

			<title>Title Of Mod</title>

			<hookname>postbit_display_complete</hookname>

			<phpcode><![CDATA[global $vbulletin;

			$this->post['message'] = Function_Name($this->post['message']);

			]]></phpcode>

</plugin>

Another code in the global_start hook can be used to hold the source of the link replacement, modify the post and return it however you want.

<title>Plugin Title</title>
<hookname>global_start</hookname>
<phpcode><![CDATA[
            function Function_Name($post) {
				global $vbulletin;
                //Preg_replace + other Functions
                return $post;
             }
]]></phpcode>

[Dismounted]

That is not adding another BB code. You can add a proper BB code (using PHP processing) by adding your tag to the processing array and setting the callback as the external callback function. Look at the bottom of class_bbcode.php.

[Jaxel]

Huh? I'm confused... is there a guide somewhere?

All I want to do is have a BB Code, with a PHP function run on it.

[Dismounted]

Originally Posted by Dismounted

That is not adding another BB code. You can add a proper BB code (using PHP processing) by adding your tag to the processing array and setting the callback as the external callback function. Look at the bottom of class_bbcode.php.

All the information you need is in that post.

[Jaxel]

Is there any way of doing this WITHOUT editing VB files? And I dont know what I am supposed to be looking at in class_bbcode.php.

[Dismounted]

Originally Posted by Jaxel

Is there any way of doing this WITHOUT editing VB files?

Yes, and that is what I'm telling you.

Originally Posted by Jaxel

And I dont know what I am supposed to be looking at in class_bbcode.php.

You will see how tags are defined. Define your own tag and callback.

[Jaxel]

Do you mind actually explaining what needs to be done? Because I still dont see what I'm supposed to be looking at.

*EDIT* ah... I think I get it now, you wanted me to see: ($hook = vBulletinHook::fetch_hook('bbcode_fetch_tags')) ? eval($hook) : false;

I tried doing this...

// [VIDEO]
require_once(DIR . '/includes/functions_videodirectory.php');

$tag_list['no_option']['video'] = array(
	'callback' => 'handle_external',
	'external_callback' => 'handle_bbcode_video',
	'strip_empty' => true
);

But I get an error:
Fatal error: Call to undefined method vB_BbCodeParser::handle_bbcode_video() in /home/eightway/public_html/includes/class_bbcode.php on line 1143

How do I get it to call handle_bbcode_video in functions_videodirectory.php?

--------------- Added [DATE]1231967882[/DATE] at [TIME]1231967882[/TIME] ---------------

Well I figured to just use the function in the plugin itself, instead of calling a file... But I'm having trouble passing the parameter data...

// [VIDEO]
$tag_list['no_option']['video'] = array(
	'callback' => 'handle_external',
	'external_callback' => 'handle_bbcode_video',
	'strip_empty' => true
);

function handle_bbcode_video($videoid)
{
	global $vbulletin;

	if (!$videoinfo = $vbulletin->db->query_first("
		SELECT video.*
		FROM " . TABLE_PREFIX . "video AS video
		WHERE video.videoid = '" . $videoid . "'")
	)
	{
		return 'This video does not exist';
	}

	require_once(DIR . '/includes/class_videosharingservice.php');
	require_once(DIR . '/includes/videoserviceapi/class_' . strtolower($videoinfo['videoservice']) . '.php');

	$classname = 'vB_VideoSharingService_' . $videoinfo['videoservice'];
	$obj = new $classname($vbulletin);

	$embedhtml = $obj->fetch_embedcode($videoinfo['videoidservice']);

	return $embedhtml;
}

For some reason, $videoid is always empty. Why is this? It ALWAYS returns 'This video does not exist'.

--------------- Added [DATE]1231974120[/DATE] at [TIME]1231974120[/TIME] ---------------

Is there a guide or something that explains what all the array options in $tag_list do?

[Dismounted]

Originally Posted by Jaxel

Do you mind actually explaining what needs to be done?

You've done a lot of work - and it shows, because you're nearly there. I'm going to give you the rest of it, because unlike a lot of people, you've actually tried doing it yourself.

Hook: bbcode_fetch_tags

PHP Code:

// [VIDEO]
$tag_list['no_option']['video'] = array(
    'callback' => 'handle_external',
    'external_callback' => 'handle_bbcode_video',
    'strip_empty' => true
); 


Hook: bbcode_create

PHP Code:

// include our custom functions
require_once(DIR . '/includes/functions_videodirectory.php');
require_once(DIR . '/includes/class_videosharingservice.php'); 


Function: handle_bbcode_video (/includes/functions_videodirectory.php)

PHP Code:

function handle_bbcode_video(&$parser, $value, $option)
{
        global $vbulletin;

        // clean video id
        $videoid = intval($value);

        // fetch video information -- this is costly, it is run every time the bb code tag is used
        $videoinfo = $vbulletin->db->query_first("
                SELECT *
                FROM " . TABLE_PREFIX . "video
                WHERE video.videoid = " . $videoid . "
                LIMIT 1
        ");

        // check video exists
        if (empty($videoinfo))
        {
                // this will show up on posts -- make sure this is what you want
                return 'This video does not exist.';
        }

        // instantiate our video class
        require_once(DIR . '/includes/videoserviceapi/class_' . strtolower($videoinfo['videoservice']) . '.php');
        $classname = 'vB_VideoSharingService_' . $videoinfo['videoservice'];
        $obj = new $classname($vbulletin);

        // return embed code
        return $obj->fetch_embedcode($videoinfo['videoidservice']);
} 


I've cleaned up and commented the function for you - you should read some of the comments.