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systemd/shell-completion/bash/busctl
Zbigniew Jędrzejewski-Szmek 0887b0548b bash-completion: redirect introspection errors to null
If completion is attempted on an invalid path, busctl might respond with an error.
This shouldn't be seen, introspection is supposed to just fail silently.
2018-05-14 08:37:19 +02:00

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# busctl(1) completion -*- shell-script -*-
# SPDX-License-Identifier: LGPL-2.1+
#
# This file is part of systemd.
#
# Copyright 2013 Zbigniew Jędrzejewski-Szmek
# Copyright 2014 Thomas H.P. Andersen
#
# systemd 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.
#
# systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
__contains_word () {
local w word=$1; shift
for w in "$@"; do
[[ $w = "$word" ]] && return
done
}
__get_machines() {
local a b
machinectl list --no-legend --no-pager 2>/dev/null |
{ while read a b; do echo " $a"; done; };
}
__get_busnames() {
local mode=$1
local a b
busctl $mode list --no-legend --no-pager 2>/dev/null |
{ while read a b; do echo " $a"; done; };
}
__get_objects() {
local mode=$1
local busname=$2
local a b
busctl $mode tree --list --no-legend --no-pager $busname 2>/dev/null |
{ while read a b; do echo " $a"; done; };
}
__get_interfaces() {
local mode=$1
local busname=$2
local path=$3
local a b c
busctl $mode introspect --list --no-legend --no-pager $busname $path 2>/dev/null |
{ while read a b c; do [[ "$b" == "interface" ]] && echo " $a"; done; };
}
__get_members() {
local mode=$1
local busname=$2
local path=$3
local interface=$4
local type=$5
local flags=$6
local a b c d e
busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
sed -e 's/^\.//' |
{ while read a b c d e; do [[ "$b" == "$type" && ( -z $flags || "$e" == "$flags" ) ]] && echo " $a"; done; };
}
__get_signature() {
local mode=$1
local busname=$2
local path=$3
local interface=$4
local member=$5
local a b c d
busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
sed -e 's/^\.//' | { while read a b c d; do [[ "$a" == "$member" && "$c" != '-' ]] && echo " \"$c\""; done; };
}
_busctl() {
local i n verb comps mode
local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
local -A OPTS=(
[STANDALONE]='-h --help --version --no-pager --no-legend --system --user
--show-machine --unique --acquired --activatable --list
-q --quiet --verbose --expect-reply=no --auto-start=no
--allow-interactive-authorization=no --augment-creds=no
--watch-bind=yes'
[ARG]='--address -H --host -M --machine --match --timeout --size'
)
if __contains_word "--user" ${COMP_WORDS[*]}; then
mode=--user
else
mode=--system
fi
if __contains_word "$prev" ${OPTS[ARG]}; then
case $prev in
--host|-H)
comps=$(compgen -A hostname)
;;
--machine|-M)
comps=$( __get_machines )
esac
COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
return 0
fi
if [[ "$cur" = -* ]]; then
COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
return 0
fi
local -A VERBS=(
[STANDALONE]='list help'
[BUSNAME]='status monitor capture tree'
[OBJECT]='introspect'
[METHOD]='call'
[PROPERTY_GET]='get-property'
[PROPERTY_SET]='set-property'
)
for ((i=0; i < COMP_CWORD; i++)); do
if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
verb=${COMP_WORDS[i]}
break
fi
done
n=$(($COMP_CWORD - $i))
if [[ -z $verb ]]; then
comps=${VERBS[*]}
elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
comps=''
elif __contains_word "$verb" ${VERBS[BUSNAME]}; then
comps=$( __get_busnames $mode)
elif __contains_word "$verb" ${VERBS[OBJECT]}; then
if [[ $n -eq 1 ]] ; then
comps=$( __get_busnames $mode)
elif [[ $n -eq 2 ]] ; then
comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
elif [[ $n -eq 3 ]] ; then
comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
else
comps=''
fi
elif __contains_word "$verb" ${VERBS[METHOD]}; then
if [[ $n -eq 1 ]] ; then
comps=$( __get_busnames $mode)
elif [[ $n -eq 2 ]] ; then
comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
elif [[ $n -eq 3 ]] ; then
comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
elif [[ $n -eq 4 ]] ; then
comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} method)
elif [[ $n -eq 5 ]] ; then
comps=$( __get_signature $mode ${COMP_WORDS[COMP_CWORD-4]} ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
else
comps=''
fi
elif __contains_word "$verb" ${VERBS[PROPERTY_GET]}; then
if [[ $n -eq 1 ]] ; then
comps=$( __get_busnames $mode)
elif [[ $n -eq 2 ]] ; then
comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
elif [[ $n -eq 3 ]] ; then
comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
elif [[ $n -eq 4 ]] ; then
comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} property)
else
comps=''
fi
elif __contains_word "$verb" ${VERBS[PROPERTY_SET]}; then
if [[ $n -eq 1 ]] ; then
comps=$( __get_busnames $mode)
elif [[ $n -eq 2 ]] ; then
comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
elif [[ $n -eq 3 ]] ; then
comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
elif [[ $n -eq 4 ]] ; then
comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} property writable)
elif [[ $n -eq 5 ]] ; then
comps=$( __get_signature $mode ${COMP_WORDS[COMP_CWORD-4]} ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
else
comps=''
fi
fi
COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
return 0
}
complete -F _busctl busctl