131 lines
3.6 KiB
Plaintext
131 lines
3.6 KiB
Plaintext
(*
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Module: BootConf
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Parses (Open)BSD-stype /etc/boot.conf
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Author: Jasper Lievisse Adriaanse <jasper@jasper.la>
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About: Reference
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This lens is used to parse the second-stage bootstrap configuration
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file, /etc/boot.conf as found on OpenBSD. The format is largely MI,
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with MD parts included:
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http://www.openbsd.org/cgi-bin/man.cgi?query=boot.conf&arch=i386
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About: Usage Example
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To be documented
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About: License
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This file is licensed under the LGPL v2+, like the rest of Augeas.
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About: Configuration files
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This lens applies to /etc/boot.conf.
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See <filter>.
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*)
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module BootConf =
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autoload xfm
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(************************************************************************
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* Utility variables/functions
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************************************************************************)
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(* View: comment *)
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let comment = Util.comment
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(* View: empty *)
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let empty = Util.empty
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(* View: eol *)
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let eol = Util.eol
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(* View: fspath *)
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let fspath = Rx.fspath
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(* View: space *)
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let space = Sep.space
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(* View: word *)
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let word = Rx.word
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(************************************************************************
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* View: key_opt_value_line
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* A subnode with a keyword, an optional part consisting of a separator
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* and a storing lens, and an end of line
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*
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* Parameters:
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* kw:regexp - the pattern to match as key
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* sto:lens - the storing lens
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************************************************************************)
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let key_opt_value_line (kw:regexp) (sto:lens) =
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[ key kw . (space . sto)? . eol ]
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(************************************************************************
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* Commands
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************************************************************************)
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(* View: single_command
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single command such as 'help' or 'time' *)
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let single_command =
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let line_re = /help|time|reboot/
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in [ Util.indent . key line_re . eol ]
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(* View: ls
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ls [directory] *)
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let ls = Build.key_value_line
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"ls" space (store fspath)
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let set_cmd = "addr"
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| "debug"
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| "device"
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| "howto"
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| "image"
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| "timeout"
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| "tty"
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(* View: set
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set [varname [value]] *)
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let set = Build.key_value
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"set" space
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(key_opt_value_line set_cmd (store Rx.space_in))
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(* View: stty
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stty [device [speed]] *)
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let stty =
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let device = [ label "device" . store fspath ]
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in let speed = [ label "speed" . store Rx.integer ]
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in key_opt_value_line "stty" (device . (space . speed)?)
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(* View: echo
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echo [args] *)
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let echo = Build.key_value_line
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"echo" space (store word)
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(* View: boot
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boot [image [-acds]]
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XXX: the last arguments are not always needed, so make them optional *)
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let boot =
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let image = [ label "image" . store fspath ]
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in let arg = [ label "arg" . store word ]
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in Build.key_value_line "boot" space (image . space . arg)
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(* View: machine
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machine [command] *)
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let machine =
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let machine_entry = Build.key_value ("comaddr"|"memory")
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space (store word)
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| Build.flag ("diskinfo"|"regs")
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in Build.key_value_line
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"machine" space
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(Build.opt_list
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machine_entry
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space)
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(************************************************************************
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* Lens
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************************************************************************)
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(* View: command *)
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let command = boot | echo | ls | machine | set | stty
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(* View: lns *)
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let lns = ( empty | comment | command | single_command )*
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(* Variable: filter *)
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let filter = (incl "/etc/boot.conf")
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let xfm = transform lns filter
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