Sharp.Augeas/Sharp.Augeas.Test/lens/host_conf.aug

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(*
Module: Host_Conf
Parses /etc/host.conf
Author: Raphael Pinson <raphink@gmail.com>
About: Reference
This lens tries to keep as close as possible to `man 5 host.conf` where possible.
About: License
This file is licenced under the LGPL v2+, like the rest of Augeas.
About: Lens Usage
To be documented
About: Configuration files
This lens applies to /etc/host.conf. See <filter>.
*)
module Host_Conf =
autoload xfm
(************************************************************************
* Group: ENTRY TYPES
*************************************************************************)
(* View: sto_bool
Store a boolean value *)
let sto_bool = store ("on"|"off")
(* View: sto_bool_warn
Store a boolean value *)
let sto_bool_warn = store ("on"|"off"|"warn"|"nowarn")
(* View: bool
A boolean switch *)
let bool (kw:regexp) = Build.key_value_line kw Sep.space sto_bool
(* View: bool_warn
A boolean switch with extended values *)
let bool_warn (kw:regexp) = Build.key_value_line kw Sep.space sto_bool_warn
(* View: list
A list of items *)
let list (kw:regexp) (elem:string) =
let list_elems = Build.opt_list [seq elem . store Rx.word] (Sep.comma . Sep.opt_space) in
Build.key_value_line kw Sep.space list_elems
(* View: trim *)
let trim =
let trim_list = Build.opt_list [seq "trim" . store Rx.word] (del /[:;,]/ ":") in
Build.key_value_line "trim" Sep.space trim_list
(* View: entry *)
let entry = bool ("multi"|"nospoof"|"spoofalert"|"reorder")
| bool_warn "spoof"
| list "order" "order"
| trim
(************************************************************************
* Group: LENS AND FILTER
*************************************************************************)
(* View: lns *)
let lns = ( Util.empty | Util.comment | entry )*
(* View: filter *)
let filter = incl "/etc/host.conf"
let xfm = transform lns filter