gistfile1.php

<?php
public function streams_attribute($param, $default = NULL)
  {
		$value = $this->attribute($param, $default);
		
		// See if we have any vars in there
		if(strpos($value, '[') !== FALSE):

			$segs = array(
				'segment_1' => $this->uri->segment(1,$this->attribute('segment_def')),
				'segment_2' => $this->uri->segment(2,$this->attribute('segment_def')),
				'segment_3' => $this->uri->segment(3,$this->attribute('segment_def')),
				'segment_4' => $this->uri->segment(4,$this->attribute('segment_def')),
				'segment_5' => $this->uri->segment(5,$this->attribute('segment_def')),
				'segment_6' => $this->uri->segment(6,$this->attribute('segment_def')),
				'segment_7' => $this->uri->segment(7,$this->attribute('segment_def')),
				);

			// We can only get the user data if it is available
		if($this->current_user):
			
			$segs['user_id']	= $this->current_user->id;
		$segs['username']	= $this->current_user->username;

		endif;

		foreach($segs as $seg_marker => $segment_value):
			
			$value = str_replace("[$seg_marker]", $segment_value, $value);

		endforeach;
		
		endif;
		
		return $value;
	}