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| Current File : //usr/share/augeas/lenses/dist/aliases.aug |
(*
Module: Aliases
Parses /etc/aliases
Author: David Lutterkort <lutter@redhat.com>
About: Reference
This lens tries to keep as close as possible to `man 5 aliases` where possible.
About: License
This file is licenced under the LGPL v2+, like the rest of Augeas.
About: Lens Usage
See <lns>.
About: Configuration files
This lens applies to /etc/aliases.
About: Examples
The <Test_Aliases> file contains various examples and tests.
*)
module Aliases =
autoload xfm
(************************************************************************
* Group: USEFUL PRIMITIVES
*************************************************************************)
(* Group: basic tokens *)
(* Variable: word *)
let word = /[^|", \t\n]+/
(* Variable: name *)
let name = /([^ \t\n#:|@]+|"[^"|\n]*")/ (* " make emacs calm down *)
(* Variable: command
* a command can contain spaces, if enclosed in double quotes, the case
* without spaces is taken care with <word>
*)
let command = /(\|([^", \t\n]+|"[^"\n]+"))|("\|[^"\n]+")/
(* Group: Comments and empty lines *)
(* View: eol *)
let eol = Util.eol
(* View: comment *)
let comment = Util.comment
(* View: empty *)
let empty = Util.empty
(* Group: separators *)
(* View: colon
* Separation between the alias and it's destinations
*)
let colon = del /[ \t]*:[ \t]*/ ":\t"
(* View: comma
* Separation between multiple destinations
*)
let comma = del /[ \t]*,[ \t]*(\n[ \t]+)?/ ", "
(* Group: alias *)
(* View: destination
* Can be either a word (no spaces included) or a command with spaces
*)
let destination = ( word | command )
(* View: value_list
* List of destinations
*)
let value_list = Build.opt_list ([ label "value" . store destination]) comma
(* View: alias
* a name with one or more destinations
*)
let alias = [ seq "alias" .
[ label "name" . store name ] . colon .
value_list
] . eol
(* View: lns *)
let lns = (comment | empty | alias)*
let xfm = transform lns (incl "/etc/aliases")
(* Local Variables: *)
(* mode: caml *)
(* End: *)