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 # 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 | { while read a b; do echo " $a"; done; };
  29 }
  30
  31 __get_units_have_cgroup() {
  32     systemctl $1 list-units | {
  33         while read -r a b c d; do
  34             [[ $c == "active" && ${a##*.} =~ (service|socket|mount|swap|slice|scope) ]] && echo " $a"
  35         done
  36     };
  37 }
  38
  39 _systemd_cgls() {
  40     local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  41     local i verb comps
  42
  43     local -A OPTS=(
  44         [STANDALONE]='-h --help --version --all -l --full -k --no-pager'
  45         [ARG]='-M --machine -u --unit --user-unit'
  46     )
  47
  48     _init_completion || return
  49
  50     if __contains_word "$prev" ${OPTS[ARG]}; then
  51         case $prev in
  52             --machine|-M)
  53                 comps=$( __get_machines )
  54                 ;;
  55             --unit|-u)
  56                 comps=$( __get_units_have_cgroup --system )
  57                 ;;
  58             --user-unit)
  59                 comps=$( __get_units_have_cgroup --user )
  60                 ;;
  61         esac
  62         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  63         return 0
  64     fi
  65
  66     COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  67 }
  68
  69 complete -F _systemd_cgls systemd-cgls