294 lines
9.3 KiB
Plaintext
294 lines
9.3 KiB
Plaintext
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(*
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Module: Xorg
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Parses /etc/X11/xorg.conf
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Authors: Raphael Pinson <raphink@gmail.com>
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Matthew Booth <mbooth@redhat.com>
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About: Reference
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This lens tries to keep as close as possible to `man xorg.conf` where
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possible.
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The definitions from `man xorg.conf` are put as commentaries for reference
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throughout the file. More information can be found in the manual.
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About: License
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This file is licensed under the GPL.
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About: Lens Usage
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Sample usage of this lens in augtool
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* Get the identifier of the devices with a "Clone" option:
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> match "/files/etc/X11/xorg.conf/Device[Option = 'Clone']/Identifier"
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About: Configuration files
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This lens applies to /etc/X11/xorg.conf. See <filter>.
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*)
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module Xorg =
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autoload xfm
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(************************************************************************
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* Group: USEFUL PRIMITIVES
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*************************************************************************)
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(* Group: Generic primitives *)
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(* Variable: eol *)
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let eol = Util.eol
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(* Variable: to_eol
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* Match everything from here to eol, cropping whitespace at both ends
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*)
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let to_eol = /[^ \t\n](.*[^ \t\n])?/
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(* Variable: indent *)
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let indent = Util.indent
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(* Variable: comment *)
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let comment = Util.comment
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(* Variable: empty *)
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let empty = Util.empty
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(* Group: Separators *)
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(* Variable: sep_spc *)
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let sep_spc = Util.del_ws_spc
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(* Variable: sep_dquote *)
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let sep_dquote = Util.del_str "\""
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(* Group: Fields and values *)
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(* Variable: entries_re
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* This is a list of all patterns which have specific handlers, and should
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* therefore not be matched by the generic handler
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*)
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let entries_re = /([oO]ption|[sS]creen|[iI]nput[dD]evice|[dD]river|[sS]ub[sS]ection|[dD]isplay|[iI]dentifier|[vV]ideo[rR]am|[dD]efault[dD]epth|[dD]evice)/
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(* Variable: generic_entry_re *)
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let generic_entry_re = /[^# \t\n\/]+/ - entries_re
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(* Variable: quoted_string_val *)
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let quoted_string_val = del "\"" "\"" . store /[^"\n]+/ . del "\"" "\""
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(* " relax, emacs *)
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(* Variable: int *)
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let int = /[0-9]+/
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(************************************************************************
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* Group: ENTRIES AND OPTIONS
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*************************************************************************)
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(* View: entry_int
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* This matches an entry which takes a single integer for an argument
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*)
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let entry_int (canon:string) (re:regexp) =
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[ indent . del re canon . label canon . sep_spc . store int . eol ]
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(* View: entry_rgb
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* This matches an entry which takes 3 integers as arguments representing red,
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* green and blue components
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*)
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let entry_rgb (canon:string) (re:regexp) =
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[ indent . del re canon . label canon
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. [ label "red" . sep_spc . store int ]
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. [ label "green" . sep_spc . store int ]
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. [ label "blue" . sep_spc . store int ]
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. eol ]
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(* View: entry_xy
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* This matches an entry which takes 2 integers as arguments representing X and
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* Y coordinates
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*)
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let entry_xy (canon:string) (re:regexp) =
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[ indent . del re canon . label canon
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. [ label "x" . sep_spc . store int ]
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. [ label "y" . sep_spc . store int ]
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. eol ]
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(* View: entry_str
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* This matches an entry which takes a single quoted string
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*)
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let entry_str (canon:string) (re:regexp) =
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[ indent . del re canon . label canon
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. sep_spc . quoted_string_val . eol ]
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(* View: entry_generic
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* An entry without a specific handler. Store everything after the keyword,
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* cropping whitespace at both ends.
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*)
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let entry_generic = [ indent . key generic_entry_re
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. sep_spc . store to_eol . eol ]
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(* View: option *)
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let option = [ indent . del /[oO]ption/ "Option" . label "Option" . sep_spc
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. quoted_string_val
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. [ label "value" . sep_spc . quoted_string_val ]*
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. eol ]
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(* View: screen
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* The Screen entry of ServerLayout
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*)
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let screen = [ indent . del /[sS]creen/ "Screen" . label "Screen" . sep_spc
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. [ label "num" . store int . sep_spc ]?
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. quoted_string_val . sep_spc
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. [ label "position" . store to_eol ]
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. eol ]
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(* View: input_device *)
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let input_device = [ indent . del /[iI]nput[dD]evice/ "InputDevice"
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. label "InputDevice" . sep_spc . quoted_string_val
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. [ label "option" . sep_spc . quoted_string_val ]*
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. eol ]
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(* View: driver *)
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let driver = entry_str "Driver" /[dD]river/
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(* View: identifier *)
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let identifier = entry_str "Identifier" /[iI]dentifier/
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(* View: videoram *)
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let videoram = entry_int "VideoRam" /[vV]ideo[rR]am/
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(* View: default_depth *)
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let default_depth = entry_int "DefaultDepth" /[dD]efault[dD]epth/
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(* View: device *)
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let device = entry_str "Device" /[dD]evice/
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(************************************************************************
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* Group: DISPLAY SUBSECTION
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*************************************************************************)
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(* View: display_modes *)
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let display_modes = [ indent . del /[mM]odes/ "Modes" . label "Modes"
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. [ label "mode" . sep_spc . quoted_string_val ]+
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. eol ]
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(*************************************************************************
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* View: display_entry
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* Known values for entries in the Display subsection
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*
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* Definition:
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* > Depth depth
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* > FbBpp bpp
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* > Weight red-weight green-weight blue-weight
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* > Virtual xdim ydim
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* > ViewPort x0 y0
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* > Modes "mode-name" ...
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* > Visual "visual-name"
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* > Black red green blue
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* > White red green blue
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* > Options
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*)
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let display_entry = entry_int "Depth" /[dD]epth/ |
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entry_int "FbBpp" /[fF]b[bB]pp/ |
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entry_rgb "Weight" /[wW]eight/ |
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entry_xy "Virtual" /[vV]irtual/ |
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entry_xy "ViewPort" /[vV]iew[pP]ort/ |
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display_modes |
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entry_str "Visual" /[vV]isual/ |
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entry_rgb "Black" /[bB]lack/ |
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entry_rgb "White" /[wW]hite/ |
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entry_str "Options" /[oO]ptions/ |
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empty |
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comment
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(* View: display *)
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let display = [ indent . del "SubSection" "SubSection" . sep_spc
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. sep_dquote . key "Display" . sep_dquote
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. eol
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. display_entry*
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. indent . del "EndSubSection" "EndSubSection" . eol ]
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(************************************************************************
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* Group: SECTIONS
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*************************************************************************)
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(************************************************************************
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* Variable: section_re
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* Known values for Section names
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*
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* Definition:
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* > The section names are:
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* >
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* > Files File pathnames
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* > ServerFlags Server flags
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* > Module Dynamic module loading
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* > InputDevice Input device description
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* > Device Graphics device description
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* > VideoAdaptor Xv video adaptor description
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* > Monitor Monitor description
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* > Modes Video modes descriptions
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* > Screen Screen configuration
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* > ServerLayout Overall layout
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* > DRI DRI-specific configuration
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* > Vendor Vendor-specific configuration
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*************************************************************************)
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let section_re = /(Files|ServerFlags|Module|InputDevice|Device|VideoAdaptor|Monitor|Modes|Screen|ServerLayout|DRI|Vendor)/
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(************************************************************************
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* Variable: secton_re_obsolete
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* The following obsolete section names are still recognised for
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* compatibility purposes. In new config files, the InputDevice
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* section should be used instead.
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*
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* Definition:
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* > Keyboard Keyboard configuration
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* > Pointer Pointer/mouse configuration
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*************************************************************************)
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let section_re_obsolete = /(Keyboard|Pointer)/
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(* View: section_entry *)
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let section_entry = option |
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screen |
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display |
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input_device |
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driver |
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identifier |
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videoram |
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default_depth |
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device |
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entry_generic |
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empty | comment
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(************************************************************************
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* View: section
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* A section in xorg.conf
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*
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* Definition:
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* > Section "SectionName"
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* > SectionEntry
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* > ...
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* > EndSection
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*************************************************************************)
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let section = [ indent . del "Section" "Section"
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. sep_spc . sep_dquote
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. key (section_re|section_re_obsolete) . sep_dquote
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. eol
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. section_entry*
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. indent . del "EndSection" "EndSection" . eol ]
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(*
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* View: lns
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* The xorg.conf lens
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*)
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let lns = ( empty | comment | section )*
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(* Variable: filter *)
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let filter = (incl "/etc/X11/xorg.conf")
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let xfm = transform lns filter
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