Getting number of hexes per continent for real-world maps

[MiniatureDeathRobot]

When picking out maps from map packs, I often find myself wishing I could get the number of hexes each continent has, for purposes of understanding how distorted each region is size-wise, and especially selecting a balanced slate of civs when using true start locations. Has anyone done this, or have ideas on how to do it? I'll run bash scripts over .xml (.lua?) files if I have to, though of course it would be nice if someone has already done the work for popular map packs.