WordPress Filter: Replace full content before page renders -

i'm trying mesh mustache templating engine wordpress. far, have been successful using the_content filter parse template tags e.g. {{ }}.

however, if let’s say, developer hardcodes template tags directly page template e.g. loop-page, the_content doesn’t capture hardcoded tags.

is there filter allow me capture content of whole page template including content?

if you're writing plugin, can use php function ob_start() cache whole buffered content. after can use callback function return replaced content.

use triggers (action's) init or after_setup_theme script.