shell-completion/bash/systemd-cgls

   1 # systemd-cgls(1) completion                  -*- shell-script -*-
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   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 <https://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 --full --max-addresses=0 --no-legend --no-pager 2>/dev/null; echo ".host"; } | \
  29         { while read a b; do echo " $a"; done; } | \
  30         sort -u
  31 }
  32
  33 __get_units_have_cgroup() {
  34     systemctl $1 --full --no-legend --no-pager --plain 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=${COMP_WORDS[COMP_CWORD-1]} words cword
  43     local i verb comps
  44
  45     local -A OPTS=(
  46         [STANDALONE]='-h --help --version --all -l --full -k --no-pager --xattr=no --cgroup-id=no'
  47         [ARG]='-c --cgroup-id -M --machine -u --unit --user-unit -x --xattr'
  48     )
  49
  50     _init_completion || return
  51
  52     if __contains_word "$prev" ${OPTS[ARG]}; then
  53         case $prev in
  54             --machine|-M)
  55                 comps=$( __get_machines )
  56                 ;;
  57             --unit|-u)
  58                 comps=$( __get_units_have_cgroup --system )
  59                 ;;
  60             -c|--cgroup-id|-x|--xattr)
  61                 comps='yes no'
  62                 ;;
  63             --user-unit)
  64                 comps=$( __get_units_have_cgroup --user )
  65                 ;;
  66         esac
  67         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  68         return 0
  69     fi
  70
  71     COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  72 }
  73
  74 complete -F _systemd_cgls systemd-cgls