If you can mathematically guarantee that a regex will suffice, then use a regex! No-one is pointing a gun at your head and forcing you to use a parser. Parsers guarantee that they can read any file in XYZ format. If you have a subset of XYZ, then go ahead and use a regex. TMTOWDI!

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We are the carpenters and bricklayers of the Information Age.

The idea is a little like C++ templates, except not quite so brain-meltingly complicated. -- TheDamian, Exegesis 6

Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.