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