/usr/share/augeas/lenses/dist/aptpreferences.aug is in augeas-lenses 0.10.0-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | (* Apt/preferences module for Augeas *)
(* Author: Raphael Pinson <raphink@gmail.com> *)
module AptPreferences =
autoload xfm
(* Define useful primitives *)
let colon = del /:[ \t]*/ ": "
let eol = del /[ \t]*\n/ "\n"
let value_to_eol = store /([^ \t\n].*[^ \t\n]|[^ \t\n])/
let value_to_spc = store /[^, \t\n]+/
let comma = del /,[ \t]*/ ", "
let equal = Util.del_str "="
let spc = Util.del_ws_spc
(* Define empty *)
let empty = [ del /[ \t]*\n/ "\n" ]
(* Define record *)
let simple_entry (kw:string) = [ key kw . colon . value_to_eol . eol ]
let key_value (kw:string) = [ key kw . equal . value_to_spc ]
let pin_keys = key_value "a"
| key_value "c"
| key_value "l"
| key_value "o"
| key_value "v"
let pin_options = store "release" . spc . pin_keys . ( comma . pin_keys )*
let version_pin = store "version" . [ label "version" . spc . store /[^ \t\n]+/ ]
let origin_pin = store "origin" . [ label "origin" . spc . store /[^ \t\n]+/ ]
let pin = [ key "Pin" . colon . (pin_options | version_pin | origin_pin) . eol ]
let entries = simple_entry "Explanation"
| simple_entry "Package"
| simple_entry "Pin-Priority"
| pin
let record = [ seq "record" . entries+ ]
(* Define lens *)
let lns = (eol* . ( record . eol+ )* . record . eol* ) | eol
let filter = incl "/etc/apt/preferences"
. Util.stdexcl
let xfm = transform lns filter
|