Re: DSL in lua

[Dirk Laurie <dirk.laurie@...>]

You're a few commas away from legal Lua syntax.

directory "/etc/" {
  owner "root",
  group "wheel",
  mode "0755",
  action "create",
}

It can be done (functions owner etc would have to store
their argument somewhere) but a few equal signs makes the
Lua code efficient:

directory "/etc/" {
  owner="root",
  group="wheel",
  mode="0755",
  action="create",
}

The code would be (not tested):

function directory(dirname)
   return function(t)
      os.execute ("mkdir %s; chown %s.%s %s; chmod %s %s"):
         format(dirname,t.owner,t.group,dirname,t.mode,dirname)
   end
end

Or one could replace the `{`..`}` by `[[`..`]]` and insert
a small parser that extracts the fields from the string.