def owner.exec

ezx@1.11.0.0 · src/sha/nar.bend:278

import Base

278# whether a file's owner may execute it, from the mode `find` prints as
279# `%M`, `-rwxr-xr-x`: the fourth character is `x`, or `s` when the setuid
280# bit is set as well. This is the mode bit nix's NAR dumper reads
281# (`S_IXUSR`), not an access check, so a file the owner may not execute is
282# not executable whoever weighs it.
283def owner.exec(mode: String) -> Bool:
284  match mode:
285    case SCon{_t, SCon{_r, SCon{_w, SCon{+x, _rest}}}}:
286      Bool.or(Char.is_eq(x, 'x'), Char.is_eq(x, 's'))
287    case _:
288      False{}