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# resolvectl(1) completion -*- shell-script -*-
# SPDX-License-Identifier: LGPL-2.1+
#
# This file is part of elogind.
#
# Copyright © 2018 Yu Watanabe
#
# elogind is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# elogind is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with elogind; If not, see <http://www.gnu.org/licenses/>.
__contains_word () {
local w word=$1; shift
for w in "$@"; do
[[ $w = "$word" ]] && return
done
}
__get_interfaces(){
{ cd /sys/class/net && echo *; } | \
while read -d' ' -r name; do
[[ "$name" != "lo" ]] && echo "$name"
done
}
_resolvectl() {
local i comps verb name
local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
local -A OPTS=(
[STANDALONE]='-h --help --version --no-pager -4 -6
--service-address=no --service-txt=no
--cname=no --search=no --legend=no'
[ARG]='-i --interface -p --protocol -t --type -c --class --raw'
)
local -A VERBS=(
[DOMAIN]='query service openpgp'
[FAMILY]='tlsa'
[STATUS]='status'
[LINK]='revert dns domain nta'
[RESOLVE]='llmnr mdns'
[DNSSEC]='dnssec'
[DNSOVERTLS]='dnsovertls'
[STANDALONE]='statistics reset-statistics flush-caches reset-server-features'
)
local -A ARGS=(
[FAMILY]='tcp udp sctp'
[RESOLVE]='yes no resolve'
[DNSSEC]='yes no allow-downgrade'
[DNSOVERTLS]='no opportunistic'
)
local interfaces=$( __get_interfaces )
if __contains_word "$prev" ${OPTS[ARG]}; then
case $prev in
--interface|-i)
comps="$interfaces"
;;
--protocol|-p|--type|-t|--class|-c)
comps=$( resolvectl --legend=no "$prev" help; echo help )
;;
--raw)
comps="payload packet"
;;
esac
COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
return 0
fi
if [[ "$cur" = -* ]]; then
COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
return 0
fi
for ((i=0; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
verb=${COMP_WORDS[i]}
break
fi
done
if [[ -z $verb ]]; then
comps="${VERBS[*]}"
elif __contains_word "$verb" ${VERBS[STANDALONE]} ${VERBS[DOMAIN]}; then
comps=''
elif __contains_word "$verb" ${VERBS[STATUS]}; then
comps="$interfaces"
elif __contains_word "$verb" ${VERBS[FAMILY]}; then
for ((i++; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" ${ARGS[FAMILY]} &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
name=${COMP_WORDS[i]}
break;
fi
done
if [[ -z $name ]]; then
comps=${ARGS[FAMILY]}
else
comps=""
fi
elif __contains_word "$verb" ${VERBS[LINK]} ${VERBS[RESOLVE]} ${VERBS[DNSSEC]} ${VERBS[DNSOVERTLS]}; then
for ((i++; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" $interfaces &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
name=${COMP_WORDS[i]}
break;
fi
done
if [[ -z $name ]]; then
comps="$interfaces"
elif __contains_word "$verb" ${VERBS[RESOLVE]}; then
name=
for ((i++; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" ${ARGS[RESOLVE]} &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
name=${COMP_WORDS[i]}
break;
fi
done
if [[ -z $name ]]; then
comps=${ARGS[RESOLVE]}
else
comps=''
fi
elif __contains_word "$verb" ${VERBS[DNSSEC]}; then
name=
for ((i++; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" ${ARGS[DNSSEC]} &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
name=${COMP_WORDS[i]}
break;
fi
done
if [[ -z $name ]]; then
comps=${ARGS[DNSSEC]}
else
comps=''
fi
elif __contains_word "$verb" ${VERBS[DNSOVERTLS]}; then
name=
for ((i++; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" ${ARGS[DNSOVERTLS]} &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
name=${COMP_WORDS[i]}
break;
fi
done
if [[ -z $name ]]; then
comps=${ARGS[DNSOVERTLS]}
else
comps=''
fi
else
comps=''
fi
fi
COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
return 0
}
complete -F _resolvectl resolvectl
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