shell-completion/bash/portablectl

   1 # shellcheck shell=bash
   2 # portablectl(1) completion                             -*- shell-script -*-
   3 # SPDX-License-Identifier: LGPL-2.1-or-later
   4 #
   5 # This file is part of systemd.
   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 <https://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 --full --max-addresses=0 --no-legend --no-pager 2>/dev/null; echo ".host"; } | \
  30         { while read a b; do echo " $a"; done; } | \
  31         sort -u
  32 }
  33
  34 _portablectl() {
  35     local i n comps verb
  36     local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  37     local -A OPTS=(
  38         [STANDALONE]='-q --quiet --runtime --no-reload --cat --no-pager --no-legend
  39                               --no-ask-password --enable --now -h --help --version
  40                               --clean --no-block --force'
  41         [ARG]='-p --profile --copy -H --host -M --machine --extension'
  42     )
  43
  44     local -A VERBS=(
  45         [STANDALONE]='list'
  46         [IMAGE]='attach detach reattach inspect is-attached set-limit'
  47         [IMAGES]='remove'
  48         [IMAGE_WITH_BOOL]='read-only'
  49     )
  50
  51     if __contains_word "$prev" ${OPTS[ARG]}; then
  52         case $prev in
  53             --profile|-p)
  54                 comps="default nonetwork strict trusted"
  55                 ;;
  56             --copy)
  57                 comps="copy symlink auto mixed"
  58                 ;;
  59             --host|-H)
  60                 comps=$(compgen -A hostname)
  61                 ;;
  62             --machine|-M)
  63                 comps=$( __get_machines )
  64                 ;;
  65             --extension)
  66                 comps=$( compgen -A file -- "$cur" )
  67                 compopt -o filenames
  68                 ;;
  69         esac
  70         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  71         return 0
  72     fi
  73
  74     if [[ "$cur" = -* ]]; then
  75         COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  76         return 0
  77     fi
  78
  79     for ((i=0; i < COMP_CWORD; i++)); do
  80         if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
  81                 ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
  82             verb=${COMP_WORDS[i]}
  83             break
  84         fi
  85     done
  86
  87     n=$((COMP_CWORD - i))
  88
  89     if [[ -z ${verb-} ]]; then
  90         comps=${VERBS[*]}
  91     elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
  92         comps=''
  93     elif __contains_word "$verb" ${VERBS[IMAGE]}; then
  94         if [[ $n == 1 ]]; then
  95             comps=$( compgen -A file -- "$cur" )
  96             compopt -o filenames
  97         else
  98             comps=''
  99         fi
 100     elif __contains_word "$verb" ${VERBS[IMAGES]}; then
 101         comps=$( compgen -A file -- "$cur" )
 102         compopt -o filenames
 103     elif __contains_word "$verb" ${VERBS[IMAGE_WITH_BOOL]}; then
 104         if [[ $n == 1 ]]; then
 105             comps=$( compgen -A file -- "$cur" )
 106             compopt -o filenames
 107         elif [[ $n == 2 ]]; then
 108             comps='yes no'
 109         else
 110             comps=''
 111         fi
 112     fi
 113
 114     COMPREPLY=( $(compgen -o filenames -W '$comps' -- "$cur") )
 115     return 0
 116 }
 117
 118 complete -F _portablectl portablectl