shell-completion/bash/busctl

   1 # busctl(1) completion                               -*- shell-script -*-
   2 # SPDX-License-Identifier: LGPL-2.1+
   3 #
   4 # This file is part of systemd.
   5 #
   6 # systemd is free software; you can redistribute it and/or modify it
   7 # under the terms of the GNU Lesser General Public License as published by
   8 # the Free Software Foundation; either version 2.1 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # systemd is distributed in the hope that it will be useful, but
  12 # WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14 # General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU Lesser General Public License
  17 # along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18
  19 __contains_word () {
  20         local w word=$1; shift
  21         for w in "$@"; do
  22                 [[ $w = "$word" ]] && return
  23         done
  24 }
  25
  26 __get_machines() {
  27         local a b
  28         machinectl list --no-legend --no-pager 2>/dev/null |
  29                 { while read a b; do echo " $a"; done; };
  30 }
  31
  32 __get_busnames() {
  33         local mode=$1
  34         local a b
  35         busctl $mode list --no-legend --no-pager 2>/dev/null |
  36                 { while read a b; do echo " $a"; done; };
  37 }
  38
  39 __get_objects() {
  40         local mode=$1
  41         local busname=$2
  42         local a b
  43         busctl $mode tree --list --no-legend --no-pager $busname 2>/dev/null |
  44                 { while read a b; do echo " $a"; done; };
  45 }
  46
  47 __get_interfaces() {
  48         local mode=$1
  49         local busname=$2
  50         local path=$3
  51         local a b c
  52         busctl $mode introspect --list --no-legend --no-pager $busname $path 2>/dev/null |
  53                 { while read a b c; do [[ "$b" == "interface" ]] && echo " $a"; done; };
  54 }
  55
  56 __get_members() {
  57         local mode=$1
  58         local busname=$2
  59         local path=$3
  60         local interface=$4
  61         local type=$5
  62         local flags=$6
  63         local a b c d e
  64         busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
  65                 sed -e 's/^\.//' |
  66                 { while read a b c d e; do [[ "$b" == "$type" && ( -z $flags || "$e" == "$flags" ) ]] && echo " $a"; done; };
  67 }
  68
  69 __get_signature() {
  70         local mode=$1
  71         local busname=$2
  72         local path=$3
  73         local interface=$4
  74         local member=$5
  75         local a b c d
  76         busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
  77                 sed -e 's/^\.//' | { while read a b c d; do [[ "$a" == "$member" && "$c" != '-' ]] && echo " \"$c\""; done; };
  78 }
  79
  80 _busctl() {
  81         local i n verb comps mode
  82         local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  83         local -A OPTS=(
  84                [STANDALONE]='-h --help --version --no-pager --no-legend --system --user
  85                              --show-machine --unique --acquired --activatable --list
  86                              -q --quiet --verbose --expect-reply=no --auto-start=no
  87                              --allow-interactive-authorization=no --augment-creds=no
  88                              --watch-bind=yes -j'
  89                       [ARG]='--address -H --host -M --machine --match --timeout --size --json
  90                              --destination'
  91         )
  92
  93         if __contains_word "--user" ${COMP_WORDS[*]}; then
  94                 mode=--user
  95         else
  96                 mode=--system
  97         fi
  98
  99         if __contains_word "$prev" ${OPTS[ARG]}; then
 100                 case $prev in
 101                         --host|-H)
 102                                 comps=$(compgen -A hostname)
 103                         ;;
 104                         --machine|-M)
 105                                 comps=$( __get_machines )
 106                         ;;
 107                         --json)
 108                                 comps=$( busctl --json=help 2>/dev/null )
 109                         ;;
 110                         --destination)
 111                                 comps=$( __get_busnames $mode )
 112                         ;;
 113                 esac
 114                 COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
 115                 return 0
 116         fi
 117
 118         if [[ "$cur" = -* ]]; then
 119                 COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
 120                 return 0
 121         fi
 122
 123         local -A VERBS=(
 124                 [STANDALONE]='list help'
 125                 [BUSNAME]='status monitor capture tree'
 126                 [OBJECT]='introspect'
 127                 [METHOD]='call'
 128                 [EMIT]='emit'
 129                 [PROPERTY_GET]='get-property'
 130                 [PROPERTY_SET]='set-property'
 131         )
 132
 133         for ((i=0; i < COMP_CWORD; i++)); do
 134                 if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
 135                  ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
 136                         verb=${COMP_WORDS[i]}
 137                         break
 138                 fi
 139         done
 140
 141         n=$(($COMP_CWORD - $i))
 142
 143         if [[ -z $verb ]]; then
 144                 comps=${VERBS[*]}
 145         elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
 146                 comps=''
 147         elif __contains_word "$verb" ${VERBS[BUSNAME]}; then
 148                 comps=$( __get_busnames $mode)
 149         elif __contains_word "$verb" ${VERBS[OBJECT]}; then
 150                 if [[ $n -eq 1 ]] ; then
 151                         comps=$( __get_busnames $mode)
 152                 elif [[ $n -eq 2 ]] ; then
 153                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 154                 elif [[ $n -eq 3 ]] ; then
 155                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 156                 else
 157                         comps=''
 158                 fi
 159         elif __contains_word "$verb" ${VERBS[METHOD]}; then
 160                 if [[ $n -eq 1 ]] ; then
 161                         comps=$( __get_busnames $mode)
 162                 elif [[ $n -eq 2 ]] ; then
 163                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 164                 elif [[ $n -eq 3 ]] ; then
 165                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 166                 elif [[ $n -eq 4 ]] ; then
 167                         comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} method)
 168                 elif [[ $n -eq 5 ]] ; then
 169                         comps=$( __get_signature $mode ${COMP_WORDS[COMP_CWORD-4]} ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 170                 else
 171                         comps=''
 172                 fi
 173         elif __contains_word "$verb" ${VERBS[EMIT]}; then
 174                 comps=''
 175         elif __contains_word "$verb" ${VERBS[PROPERTY_GET]}; then
 176                 if [[ $n -eq 1 ]] ; then
 177                         comps=$( __get_busnames $mode)
 178                 elif [[ $n -eq 2 ]] ; then
 179                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 180                 elif [[ $n -eq 3 ]] ; then
 181                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 182                 elif [[ $n -eq 4 ]] ; then
 183                         comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} property)
 184                 else
 185                         comps=''
 186                 fi
 187         elif __contains_word "$verb" ${VERBS[PROPERTY_SET]}; then
 188                 if [[ $n -eq 1 ]] ; then
 189                         comps=$( __get_busnames $mode)
 190                 elif [[ $n -eq 2 ]] ; then
 191                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 192                 elif [[ $n -eq 3 ]] ; then
 193                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 194                 elif [[ $n -eq 4 ]] ; then
 195                         comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} property writable)
 196                 elif [[ $n -eq 5 ]] ; then
 197                         comps=$( __get_signature $mode ${COMP_WORDS[COMP_CWORD-4]} ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 198                 else
 199                         comps=''
 200                 fi
 201         fi
 202
 203         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
 204         return 0
 205 }
 206
 207 complete -F _busctl busctl