shell-completion/bash/portablectl

   1 # portablectl(1) completion                             -*- shell-script -*-
   2 # SPDX-License-Identifier: LGPL-2.1+
   3 #
   4 # This file is part of elogind.
   5 #
   6 # Copyright © 2018 Yu Watanabe
   7 #
   8 # elogind 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 # elogind 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 elogind; 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 2>/dev/null |
  31                 { while read a b; do echo " $a"; done; };
  32 }
  33
  34 _portablectl() {
  35         local i n comps verb
  36         local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  37         local -A OPTS=(
  38                 [STANDALONE]='-q --quiet --runtime --no-reload --cat --no-pager --no-legend
  39                               --no-ask-password -h --help --version'
  40                 [ARG]='-p --profile --copy -H --host -M --machine'
  41         )
  42
  43         local -A VERBS=(
  44                 [STANDALONE]='list'
  45                 [IMAGE]='attach detach inspect is-attached set-limit'
  46                 [IMAGES]='remove'
  47                 [IMAGE_WITH_BOOL]='read-only'
  48         )
  49
  50         if __contains_word "$prev" ${OPTS[ARG]}; then
  51                 case $prev in
  52                         --profile|-p)
  53                                 comps="default nonetwork strict trusted"
  54                                 ;;
  55                         --copy)
  56                                 comps="copy symlink auto"
  57                                 ;;
  58                         --host|-H)
  59                                 comps=$(compgen -A hostname)
  60                                 ;;
  61                         --machine|-M)
  62                                 comps=$( __get_machines )
  63                                 ;;
  64                 esac
  65                 COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  66                 return 0
  67         fi
  68
  69         if [[ "$cur" = -* ]]; then
  70                 COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  71                 return 0
  72         fi
  73
  74         for ((i=0; i < COMP_CWORD; i++)); do
  75                 if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
  76                  ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
  77                         verb=${COMP_WORDS[i]}
  78                         break
  79                 fi
  80         done
  81
  82         n=$(($COMP_CWORD - $i))
  83
  84         if [[ -z $verb ]]; then
  85                 comps=${VERBS[*]}
  86         elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
  87                 comps=''
  88         elif __contains_word "$verb" ${VERBS[IMAGE]}; then
  89                 if [[ $n == 1 ]]; then
  90                         comps=$( compgen -A file -- "$cur" )
  91                         compopt -o filenames
  92                 else
  93                         comps=''
  94                 fi
  95         elif __contains_word "$verb" ${VERBS[IMAGES]}; then
  96                 comps=$( compgen -A file -- "$cur" )
  97                 compopt -o filenames
  98         elif __contains_word "$verb" ${VERBS[IMAGE_WITH_BOOL]}; then
  99                 if [[ $n == 1 ]]; then
 100                         comps=$( compgen -A file -- "$cur" )
 101                         compopt -o filenames
 102                 elif [[ $n == 2 ]]; then
 103                         comps='yes no'
 104                 else
 105                         comps=''
 106                 fi
 107         fi
 108
 109         COMPREPLY=( $(compgen -o filenames -W '$comps' -- "$cur") )
 110         return 0
 111 }
 112
 113 complete -F _portablectl portablectl