Make something amazing, for anyone, at DrupalCon. Standard prices end on August 26.
are there any alternatives for this like custom filter?
I'm afraid jsbeautifier and the GeSHi filter module are hard to match/combine for several reasons.
* jsbeautifier's website mentions that it can be run server side, but this requires a server side setup that is not typical for most drupal sites I guess. Apart from this, integrating it with Drupal in PHP will be non trivial and I don't have the resources to do let alone support this.
Maybe you'll have more luck at one of the syntax highlighting alternatives:http://drupal.org/project/syntaxhighlighterhttp://drupal.org/project/chili_highlighterhttp://drupal.org/project/ajax_markup
Drupal is a registered trademark of Dries Buytaert.