XKB to Genode input_filter configuration

  Christian Helmuth


This tool generates Genode input_filter XML configuration files from
X11 XKB configuration. It must be built and run on Linux with
libxkbcommon development packages installed.

For pragmatic (and realistic reasons) this tool assumes a standard
105-keys PC keyboard. This assumption automatically includes US
keyboards with 104 keys. The differences are:

- PC105 has an additional 105th Less Then / Greater Then key <LSGT>
  right of Left Shift <LFSH> as additional 105th key
- PC105 has the Backslash key <BKSL> left of Return <RTRN>

xkb2ifcfg supports Shift, AltGr, and Caps Lock modifiers, as well as
localized dead-key/compose sequences. The tool does not support
latched modifiers.


Build
=====

Just execute 'make' and 'xkb2ifcfg' should be built.


Usage
=====

! xkb2ifcfg <command> <layout> <variant> <locale>
!
! Commands
!
!   generate   generate input_filter config
!   dump       dump raw XKB keymap
!   info       simple per-key information
!
! Examples
!
!   xkb2ifcfg generate us ""         en_US.UTF-8 > en_US.chargen
!   xkb2ifcfg info     de nodeadkeys de_DE.UTF-8 > de_DE.chargen

All information is printed on standard output while diagnostic
messages are written to standard error.

Valid 'layout' and 'variant' options can be figured out from the
LAYOUTS section in

! man 7 xkeyboard-config

'variant' strings are depicted in parentheses after the layout (e.g.,
'us(euro)').

The 'locale' option has the standard locale syntax (see
/usr/share/i18n/locales).


Generation of keyboard-layout PDFs (and other examples)
=======================================================

setxkbmap -print -rules evdev -model pc104 -layout us -variant ""           -option "" | xkbcomp -xkm - - | xkbprint -color -label name - - | ps2pdf - t.pdf
setxkbmap -print -rules evdev -model pc105 -layout de -variant "nodeadkeys" -option "" | xkbcomp -xkm - - | xkbprint -color -label symbols - - | ps2pdf - t.pdf

setxkbmap -print -model pc104 -option -layout us
setxkbmap -print -model pc105 -option -layout de -variant nodeadkeys
setxkbmap -print -model pc105 -option -layout ch -variant de_nodeadkeys
setxkbmap -print -model pc105 -option -layout ch -variant fr_nodeadkeys

setxkbmap -print -model pc105 -option -layout gb
setxkbmap -print -model pc104 -option -layout us -variant euro
setxkbmap -print -model pc104 -option -layout us -variant workman