shell-completion/bash/bootctl

   1 # bootctl(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_entry_ids() {
  27     bootctl --no-pager list 2>/dev/null | { while read -r a b; do [[ $a == 'id:' ]] && echo " $b"; done }
  28 }
  29
  30 _bootctl() {
  31     local i verb comps
  32     local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  33     local -A OPTS=(
  34         [STANDALONE]='-h --help --no-variables -p --print-esp-path -x --print-boot-path --version --no-pager'
  35         [ARG]='--esp-path --boot-path'
  36     )
  37
  38     if __contains_word "$prev" ${OPTS[ARG]}; then
  39         case $prev in
  40             --esp-path|--boot-path)
  41                 if [[ -z $cur ]]; then
  42                     comps=$(compgen -A directory -- "/" )
  43                 else
  44                     comps=$(compgen -A directory -- "$cur" )
  45                 fi
  46                 compopt -o filenames
  47                 ;;
  48         esac
  49         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  50         return 0
  51     fi
  52
  53     if [[ "$cur" = -* ]]; then
  54         COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  55         return 0
  56     fi
  57
  58     local -A VERBS=(
  59         [STANDALONE]='help install list remove status update'
  60         [BOOTENTRY]='set-default set-oneshot'
  61     )
  62
  63     for ((i=0; i < COMP_CWORD; i++)); do
  64         if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]}; then
  65             verb=${COMP_WORDS[i]}
  66             break
  67         fi
  68     done
  69
  70     if [[ -z $verb ]]; then
  71         comps=${VERBS[*]}
  72     elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
  73         comps=''
  74     elif __contains_word "$verb" ${VERBS[BOOTENTRY]}; then
  75         name=
  76         for ((i++; i < COMP_CWORD; i++)); do
  77             if ! __contains_word "${COMP_WORDS[i]}" ${OPTS[*]} ${VERBS[*]} &&
  78                     ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
  79                 name=${COMP_WORDS[i]}
  80                 break;
  81             fi
  82         done
  83
  84         if [[ -z $name ]]; then
  85             comps=$( __get_entry_ids )
  86         else
  87             comps=''
  88         fi
  89     fi
  90
  91     COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  92     return 0
  93 }
  94
  95 complete -F _bootctl bootctl