in reply to Re^2: Help to create a program
in thread Help to create a program
From the brief glimpse you've given of the problem domain, it seems as if you're looking for a recursive descent parser. Maybe take a look at Parse::RecDescent (and possibly Parse::RecDescent::FAQ although I have no experience with this module/document) or Marpa::R2.
Give a man a fish: <%-{-{-{-<
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