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channels.aug
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(* Module: Channels Parses channels.conf files Author: Raphael Pinson <raphink@gmail.com> About: Reference See http://linuxtv.org/vdrwiki/index.php/Syntax_of_channels.conf 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 channels.conf files. About: Examples The <Test_Channels> file contains various examples and tests. *) module Channels = (************************************************************************ * Group: USEFUL PRIMITIVES *************************************************************************) (* View: eol *) let eol = Util.eol (* View: comment *) let comment = Util.comment_generic /;[ \t]*/ "; " (* View: equal *) let equal = Sep.equal (* View: colon *) let colon = Sep.colon (* View: comma *) let comma = Sep.comma (* View: semicol *) let semicol = Util.del_str ";" (* View: plus *) let plus = Util.del_str "+" (* View: arroba *) let arroba = Util.del_str "@" (* View: no_colon *) let no_colon = /[^: \t\n][^:\n]*[^: \t\n]|[^:\n]/ (* View: no_semicolon *) let no_semicolon = /[^;\n]+/ (************************************************************************ * Group: FUNCTIONS *************************************************************************) (* View: field A generic field *) let field (name:string) (sto:regexp) = [ label name . store sto ] (* View: field_no_colon A <field> storing <no_colon> *) let field_no_colon (name:string) = field name no_colon (* View: field_int A <field> storing <Rx.integer> *) let field_int (name:string) = field name Rx.integer (* View: field_word A <field> storing <Rx.word> *) let field_word (name:string) = field name Rx.word (************************************************************************ * Group: ENTRIES *************************************************************************) (* View: vpid *) let vpid = let codec = [ equal . label "codec" . store Rx.integer ] in let vpid_entry (lbl:string) = [ label lbl . store Rx.integer . codec? ] in vpid_entry "vpid" . ( plus . vpid_entry "vpid_pcr" )? (* View: langs *) let langs = let lang = [ label "lang" . store Rx.word ] in Build.opt_list lang plus (* View: apid *) let apid = let codec = [ arroba . label "codec" . store Rx.integer ] in let options = equal . ( (langs . codec?) | codec ) in let apid_entry (lbl:string) = [ label lbl . store Rx.integer . options? ] in Build.opt_list (apid_entry "apid") comma . ( semicol . Build.opt_list (apid_entry "apid_dolby") comma )? (* View: tpid *) let tpid = let tpid_bylang = [ label "tpid_bylang" . store Rx.integer . (equal . langs)? ] in field_int "tpid" . ( semicol . Build.opt_list tpid_bylang comma )? (* View: caid *) let caid = let caid_entry = [ label "caid" . store Rx.word ] in Build.opt_list caid_entry comma (* View: entry *) let entry = [ label "entry" . store no_semicolon . (semicol . field_no_colon "provider")? . colon . field_int "frequency" . colon . field_word "parameter" . colon . field_word "signal_source" . colon . field_int "symbol_rate" . colon . vpid . colon . apid . colon . tpid . colon . caid . colon . field_int "sid" . colon . field_int "nid" . colon . field_int "tid" . colon . field_int "rid" . eol ] (* View: entry_or_comment *) let entry_or_comment = entry | comment (* View: group *) let group = [ Util.del_str ":" . label "group" . store no_colon . eol . entry_or_comment* ] (* View: lns *) let lns = entry_or_comment* . group*