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(*
Module: Postgresql
Parses postgresql.conf
Author: Raphael Pinson <raphink@gmail.com>
About: Reference
http://www.postgresql.org/docs/current/static/config-setting.html
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 postgresql.conf. See <filter>.
About: Examples
The <Test_Postgresql> file contains various examples and tests.
*)
module Postgresql =
autoload xfm
(* View: sep
Key and values are separated
by either spaces or an equal sign *)
let sep = del /([ \t]+)|([ \t]*=[ \t]*)/ " = "
(* Variable: word_opt_quot_re
Strings that don't require quotes *)
let word_opt_quot_re = /[A-Za-z][A-Za-z0-9_-]*/
(* View: word_opt_quot
Storing a <word_opt_quot_re>, with or without quotes *)
let word_opt_quot = Quote.do_squote_opt (store word_opt_quot_re)
(* Variable: number_re
A relative decimal number, optionally with unit *)
let number_re = Rx.reldecimal . /[kMG]?B|[m]?s|min|h|d/?
(* View: number
Storing <number_re>, with or without quotes *)
let number = Quote.do_squote_opt (store number_re)
(* View: word_quot
Anything other than <word_opt_quot> or <number>
Quotes are mandatory *)
let word_quot =
let esc_squot = /\\\\'/
in let no_quot = /[^#'\n]/
in let forbidden = word_opt_quot_re | number_re
in let value = (no_quot|esc_squot)* - forbidden
in Quote.do_squote (store value)
(* View: entry_gen
Builder to construct entries *)
let entry_gen (lns:lens) =
Util.indent . Build.key_value_line_comment Rx.word sep lns Util.comment_eol
(* View: entry *)
let entry = entry_gen number
| entry_gen word_opt_quot
| entry_gen word_quot (* anything else *)
(* View: lns *)
let lns = (Util.empty | Util.comment | entry)*
(* Variable: filter *)
let filter = (incl "/var/lib/pgsql/data/postgresql.conf" .
incl "/var/lib/pgsql/*/data/postgresql.conf" .
incl "/var/lib/postgresql/*/data/postgresql.conf" .
incl "/etc/postgresql/*/*/postgresql.conf" )
let xfm = transform lns filter