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 # Copyright © 2013 Zbigniew Jędrzejewski-Szmek
   7 # Copyright © 2014 Thomas H.P. Andersen
   8 #
   9 # systemd is free software; you can redistribute it and/or modify it
  10 # under the terms of the GNU Lesser General Public License as published by
  11 # the Free Software Foundation; either version 2.1 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # systemd is distributed in the hope that it will be useful, but
  15 # WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17 # General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU Lesser General Public License
  20 # along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21
  22 __contains_word () {
  23         local w word=$1; shift
  24         for w in "$@"; do
  25                 [[ $w = "$word" ]] && return
  26         done
  27 }
  28
  29 __get_machines() {
  30         local a b
  31         machinectl list --no-legend --no-pager 2>/dev/null |
  32                 { while read a b; do echo " $a"; done; };
  33 }
  34
  35 __get_busnames() {
  36         local mode=$1
  37         local a b
  38         busctl $mode list --no-legend --no-pager 2>/dev/null |
  39                 { while read a b; do echo " $a"; done; };
  40 }
  41
  42 __get_objects() {
  43         local mode=$1
  44         local busname=$2
  45         local a b
  46         busctl $mode tree --list --no-legend --no-pager $busname 2>/dev/null |
  47                 { while read a b; do echo " $a"; done; };
  48 }
  49
  50 __get_interfaces() {
  51         local mode=$1
  52         local busname=$2
  53         local path=$3
  54         local a b c
  55         busctl $mode introspect --list --no-legend --no-pager $busname $path 2>/dev/null |
  56                 { while read a b c; do [[ "$b" == "interface" ]] && echo " $a"; done; };
  57 }
  58
  59 __get_members() {
  60         local mode=$1
  61         local busname=$2
  62         local path=$3
  63         local interface=$4
  64         local type=$5
  65         local flags=$6
  66         local a b c d e
  67         busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
  68                 sed -e 's/^\.//' |
  69                 { while read a b c d e; do [[ "$b" == "$type" && ( -z $flags || "$e" == "$flags" ) ]] && echo " $a"; done; };
  70 }
  71
  72 __get_signature() {
  73         local mode=$1
  74         local busname=$2
  75         local path=$3
  76         local interface=$4
  77         local member=$5
  78         local a b c d
  79         busctl $mode introspect --list --no-legend --no-pager $busname $path $interface 2>/dev/null |
  80                 sed -e 's/^\.//' | { while read a b c d; do [[ "$a" == "$member" && "$c" != '-' ]] && echo " \"$c\""; done; };
  81 }
  82
  83 _busctl() {
  84         local i n verb comps mode
  85         local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  86         local -A OPTS=(
  87                [STANDALONE]='-h --help --version --no-pager --no-legend --system --user
  88                              --show-machine --unique --acquired --activatable --list
  89                              -q --quiet --verbose --expect-reply=no --auto-start=no
  90                              --allow-interactive-authorization=no --augment-creds=no
  91                              --watch-bind=yes'
  92                       [ARG]='--address -H --host -M --machine --match --timeout --size'
  93         )
  94
  95         if __contains_word "--user" ${COMP_WORDS[*]}; then
  96                 mode=--user
  97         else
  98                 mode=--system
  99         fi
 100
 101         if __contains_word "$prev" ${OPTS[ARG]}; then
 102                 case $prev in
 103                         --host|-H)
 104                                 comps=$(compgen -A hostname)
 105                         ;;
 106                         --machine|-M)
 107                                 comps=$( __get_machines )
 108                 esac
 109                 COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
 110                 return 0
 111         fi
 112
 113         if [[ "$cur" = -* ]]; then
 114                 COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
 115                 return 0
 116         fi
 117
 118         local -A VERBS=(
 119                 [STANDALONE]='list help'
 120                 [BUSNAME]='status monitor capture tree'
 121                 [OBJECT]='introspect'
 122                 [METHOD]='call'
 123                 [PROPERTY_GET]='get-property'
 124                 [PROPERTY_SET]='set-property'
 125         )
 126
 127         for ((i=0; i < COMP_CWORD; i++)); do
 128                 if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
 129                  ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
 130                         verb=${COMP_WORDS[i]}
 131                         break
 132                 fi
 133         done
 134
 135         n=$(($COMP_CWORD - $i))
 136
 137         if [[ -z $verb ]]; then
 138                 comps=${VERBS[*]}
 139         elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
 140                 comps=''
 141         elif __contains_word "$verb" ${VERBS[BUSNAME]}; then
 142                 comps=$( __get_busnames $mode)
 143         elif __contains_word "$verb" ${VERBS[OBJECT]}; then
 144                 if [[ $n -eq 1 ]] ; then
 145                         comps=$( __get_busnames $mode)
 146                 elif [[ $n -eq 2 ]] ; then
 147                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 148                 elif [[ $n -eq 3 ]] ; then
 149                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 150                 else
 151                         comps=''
 152                 fi
 153         elif __contains_word "$verb" ${VERBS[METHOD]}; then
 154                 if [[ $n -eq 1 ]] ; then
 155                         comps=$( __get_busnames $mode)
 156                 elif [[ $n -eq 2 ]] ; then
 157                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 158                 elif [[ $n -eq 3 ]] ; then
 159                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 160                 elif [[ $n -eq 4 ]] ; then
 161                         comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} method)
 162                 elif [[ $n -eq 5 ]] ; then
 163                         comps=$( __get_signature $mode ${COMP_WORDS[COMP_CWORD-4]} ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 164                 else
 165                         comps=''
 166                 fi
 167         elif __contains_word "$verb" ${VERBS[PROPERTY_GET]}; then
 168                 if [[ $n -eq 1 ]] ; then
 169                         comps=$( __get_busnames $mode)
 170                 elif [[ $n -eq 2 ]] ; then
 171                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 172                 elif [[ $n -eq 3 ]] ; then
 173                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 174                 elif [[ $n -eq 4 ]] ; then
 175                         comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} property)
 176                 else
 177                         comps=''
 178                 fi
 179         elif __contains_word "$verb" ${VERBS[PROPERTY_SET]}; then
 180                 if [[ $n -eq 1 ]] ; then
 181                         comps=$( __get_busnames $mode)
 182                 elif [[ $n -eq 2 ]] ; then
 183                         comps=$( __get_objects $mode ${COMP_WORDS[COMP_CWORD-1]})
 184                 elif [[ $n -eq 3 ]] ; then
 185                         comps=$( __get_interfaces $mode ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 186                 elif [[ $n -eq 4 ]] ; then
 187                         comps=$( __get_members $mode ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]} property writable)
 188                 elif [[ $n -eq 5 ]] ; then
 189                         comps=$( __get_signature $mode ${COMP_WORDS[COMP_CWORD-4]} ${COMP_WORDS[COMP_CWORD-3]} ${COMP_WORDS[COMP_CWORD-2]} ${COMP_WORDS[COMP_CWORD-1]})
 190                 else
 191                         comps=''
 192                 fi
 193         fi
 194
 195         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
 196         return 0
 197 }
 198
 199 complete -F _busctl busctl