shell-completion/bash/systemd-cgls

   1 # systemd-cgls(1) completion                  -*- shell-script -*-
   2 # SPDX-License-Identifier: LGPL-2.1+
   3 #
   4 # This file is part of systemd.
   5 #
   6 # Copyright © 2014 Thomas H.P. Andersen
   7 #
   8 # systemd is free software; you can redistribute it and/or modify it
   9 # under the terms of the GNU Lesser General Public License as published by
  10 # the Free Software Foundation; either version 2.1 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # systemd is distributed in the hope that it will be useful, but
  14 # WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16 # General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Lesser General Public License
  19 # along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20
  21 __contains_word() {
  22         local w word=$1; shift
  23         for w in "$@"; do
  24                 [[ $w = "$word" ]] && return
  25         done
  26 }
  27
  28 __get_machines() {
  29         local a b
  30         machinectl list --no-legend --no-pager | { while read a b; do echo " $a"; done; };
  31 }
  32
  33 __get_units_have_cgroup() {
  34         systemctl $1 list-units | {
  35                 while read -r a b c d; do
  36                         [[ $c == "active" && ${a##*.} =~ (service|socket|mount|swap|slice|scope) ]] && echo " $a"
  37                 done
  38         };
  39 }
  40
  41 _systemd_cgls() {
  42         local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  43         local i verb comps
  44
  45         local -A OPTS=(
  46                [STANDALONE]='-h --help --version --all -l --full -k --no-pager'
  47                       [ARG]='-M --machine -u --unit --user-unit'
  48         )
  49
  50         _init_completion || return
  51
  52         if __contains_word "$prev" ${OPTS[ARG]}; then
  53                 case $prev in
  54                         --machine|-M)
  55                                 comps=$( __get_machines )
  56                         ;;
  57                         --unit|-u)
  58                                 comps=$( __get_units_have_cgroup --system )
  59                         ;;
  60                         --user-unit)
  61                                 comps=$( __get_units_have_cgroup --user )
  62                         ;;
  63                 esac
  64                 COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  65                 return 0
  66         fi
  67
  68         COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  69 }
  70
  71 complete -F _systemd_cgls systemd-cgls