/**
* Checks if the given url is a local or external one
*
* @since 1.8.2
*/
function wprss_ftp_is_url_local( $url, $home_url = null ) {
if ( is_null( $home_url) )
$home_url = get_option( 'siteurl' );
// What about the URLs are we comparing?
$relevant_parts = array( 'host', 'path' );
// Get the site's url
$siteurl = trim( WPRSS_FTP_Utils::rebuild_url( $home_url, $relevant_parts ), '/');
// The URL in question
$url = trim( WPRSS_FTP_Utils::rebuild_url( WPRSS_FTP_Utils::encode_and_parse_url( $url ), $relevant_parts , '/'));
return strpos( $url, $siteurl ) === 0;
}