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(* 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: *)