<?php





class VP_Util_Res


{





	public static function is_font_awesome($icon)


	{


		if (strpos($icon, 'font-awesome:') === 0)


		{


			return trim(str_replace('font-awesome:', '', $icon));


		}


		return false;


	}





	public static function get_preview_from_url($url)


	{


		$preview = '';


		$images  = array('jpg', 'jpeg', 'bmp',  'gif',  'png');


		


		if(filter_var($url, FILTER_VALIDATE_URL) !== FALSE)


		{


			// check for extension, if it has extension then use it


			$info = pathinfo($url);


			if(isset($info['extension']))


			{


				if(in_array($info['extension'], $images))


				{


					$preview = $url;


				}


				else


				{


					$type = wp_ext2type( $info['extension'] );


					if(is_null($type))


						$type = 'default';


					$preview = includes_url() . 'images/crystal/' . $type . '.png';


				}


			}


			else


			{


				// if no extension, try to discover from mime


				$mime = wp_remote_head( $url );


				if(!is_wp_error( $mime ))


				{


					$mime = $mime['headers']['content-type'];


					if(strpos($mime, 'image') === 0)


						$preview = $url;


					else


						$preview = wp_mime_type_icon( $mime );


				}


				else


				{


					$preview = includes_url() . 'images/crystal/' . 'default' . '.png';


				}


			}


		}





		return $preview;


	}





	public static function img($url)


	{


		// empty parameter


		if (empty($url)) {


			return '';


		}





		// if already absolute, then just return


		if (parse_url($url, PHP_URL_SCHEME))


		{


			return $url;


		}


		else


		{


			// check if got beginning slash


			if ($url[0] == '/' or $url[0] == '\\')


			{


				return VP_IMAGE_URL . $url;


			}


			return VP_IMAGE_URL . '/' . $url;


		}


	}





	public static function img_out($img, $default)


	{


		if (empty($img))


			echo self::img($default);


		else


			echo self::img($img);


	}





}