[scoutt]

Thank you.

I see. I'm looking now at how to load DOOM WAD files in Rust (https://github.com/bjt0/rs_wad/blob/master/src/wad.rs#L105) as an example, and I see it uses your method (even if it seems to store each piece in individual variables to then copy them into the struct).

It's not as straightforward as one would expect (as you say, it requires an extra buffer and parsing, but no extra IO). I surely wouldn't get to the solution by myself.