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#compdef setxkbmap

local curcontext="$curcontext" sourcedir layout ret=1
local -a state state_descr line expl matches suf
local -A opt_args

_arguments -C \
  '(-)'{-\?,-help}'[display help message]' \
  '-compat[compatibility map]:compatibility:->compatmaps' \
  '-config[configuration file]:configuration:_files' \
  '-device[specify numeric id of the input device]:device:->devices' \
  '-display[display]:display:_x_display' \
  '-geometry[geometry component]:geometry:->geometries' \
  '*-I+[add a directory to be searched for layout or rules files]: :_directories' \
  '-keycodes[specify keycodes component name]:name' \
  '-keymap[specify keymap to load]:keymap' \
  '-layout[specify layout used to choose component names]:layout:->layouts' \
  '-model[specify model used to choose component names]:model:->models' \
  '*-option[add an xkb option]:option:->options' \
  '(-)'-print'[print a complete xkb_keymap description]' \
  '-query[print the current layout settings]' \
  '-rules[specify rules file to use]:rules:->rules' \
  '-symbols[specify symbols component name]:symbol' \
  '-synch[force synchronization]' \
  '-types[types components]:type:->types' \
  '(-verbose -v)'{-verbose,-v}'[set verbosity level]:verbosity:(0 1 2 3 4 5 6 7 8 9)' \
  '(-)-version[display version information]' \
  '-variant[specify layout variant used to choose component name]:variant:->variants' \
  '1:layout:->layouts' \
  '2:variant:->variants' \
  '*:option:->options' && ret=0

if [[ -n $state ]]; then
  local open='(' close=')'
  compquote open close

  layout=${opt_args[-layout]:-$line[1]}
  if [[ $state = layouts ]]; then
    compset -P '*,'
    if compset -P 1 '*\('; then
      layout="${${IPREFIX%$open}##*,}"
      state=variants state_descr=variant
      suf=( -S"$close$compstate[quote] " )
    else
      suf=( -S$open -r ",('\" \t\n\-" )
    fi
  fi

  _description $state expl $state_descr
  if (( $+commands[localectl] )); then
    case $state in
      layouts) matches=( $(_call_program layouts localectl list-x11-keymap-layouts) ) ;;
      models) matches=( $(_call_program layouts localectl list-x11-keymap-models) ) ;;
      options) matches=( $(_call_program layouts localectl list-x11-keymap-options) ) ;;
      variants) matches=( $(_call_program layouts localectl list-x11-keymap-variants $layout) ) ;;
    esac
  fi
  if (( ! $#matches )); then
    sourcedir=$(pkg-config xkeyboard-config --variable=xkb_base 2>/dev/null)
    [[ -z $sourcedir ]] && sourcedir=(
      ${XDG_DATA_HOME:-~/.local/share}/X11/xkb(N/)
      ${(s.:.)XDG_DATA_DIRS:-/usr/lib:/usr/share:/usr/local/lib:/usr/local/share}/X11/xkb(N/)
    )
    (( $#sourcedir )) && case $state in
      layouts) matches=( $sourcedir/symbols/**/^README(.Ne."REPLY=\${REPLY#*/symbols/}".) ) ;;
      compatmaps) matches=( $sourcedir/compat/^README(.:t) ) ;;
      models) matches=( $(sed -n '/modelList/,/\/modelList/ s, *<name>\(.*\)</name>,\1,p' $sourcedir/rules/(evdev|base).xml(.N[1])) ) ;;
      options) matches=( $(sed -n '/optionList/,/\/optionList/ s, *<name>\(.*\)</name>,\1,p' $sourcedir/rules/(evdev|base).xml(.N[1])) ) ;;
      rules) matches=( $sourcedir/rules/*.lst(-.:t:r) ) ;;
      types) matches=( $sourcedir/types/^README(.:t) ) ;;
      variants)
        [[ -n $layout && -r $sourcedir/symbols/$layout ]] && matches=(
            ${${${(M)${(f)"$(<$sourcedir/symbols/$layout)"}:#*xkb_symbols*\"([^\"])##\"*}##*xkb_symbols([^\"])##\"}%%\"*}
        )
      ;;
      geometries)
        if compset -P 1 '*\('; then
          layout="${${IPREFIX%$open}##*,}"
          suf=( -S"$close$compstate[quote] " )
          matches=( $(sed -n -e '/xkb_geometry/ s/[^"]*"\([^"]*\).*/\1/p' $sourcedir/geometry/${IPREFIX%%[\\(]#}(.N)) )
        else
          suf=( -S$open -r "('\" \t\n\-" )
          matches=( $sourcedir/geometry/^README(.:t) )
        fi
      ;;
      devices)
        # copied from _xinput
        if (( $+commands[xinput] )); then
          local -a ids names disp
          local out
          ids=( ${${(f)"$(_call_program input-devices xinput list --id-only)"}#? } )
          names=( ${${(f)"$(_call_program input-devices xinput list --name-only)"}#? } )
          disp=( ${(f)"$(_call_program input-devices xinput list --short)"} )

          if [[ $PREFIX$SUFFIX = [^-]*[^0-9]* ]]; then
            # match based on the names but insert IDs
            compadd "$expl[@]" -M 'b:=* m:{[:lower:]}={[:upper:]}' -D ids -D disp -a names
            compadd "$expl[@]" -U -ld disp -a ids && ret=0

            zstyle -s ":completion:${curcontext}:input-devices" insert-ids out || out=menu
            case "$out" in
              menu)   compstate[insert]=menu ;;
              single) [[ $#ids -ne 1 && $compstate[insert] != menu ]] &&
                          compstate[insert]= ;;
              *)      [[ ${#:-$PREFIX$SUFFIX} -gt ${#compstate[unambiguous]} ]] &&
                          compstate[insert]=menu ;;
            esac
          else
            compadd "$expl[@]" -M 'B:0=' -o nosort -ld disp -a ids && ret=0
          fi
        fi
        return ret
      ;;
    esac
  fi
  compadd "$expl[@]" $suf -a matches && ret=0
fi

return ret