shell-completion/bash/bootctl

   1 # shellcheck shell=bash
   2 # bootctl(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_entry_ids() {
  28     bootctl --no-pager list 2>/dev/null | { while read -r a b; do [[ $a == 'id:' ]] && echo " $b"; done; }
  29 }
  30
  31 _bootctl() {
  32     local i verb comps
  33     local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  34     local -A OPTS=(
  35         [STANDALONE]='-h --help -p --print-esp-path -x --print-boot-path --version --no-variables --no-pager --graceful --dry-run'
  36         [ARG]='--esp-path --boot-path --make-machine-id-directory --root --image --install-source --random-seed'
  37     )
  38
  39     if __contains_word "$prev" ${OPTS[ARG]}; then
  40         case $prev in
  41             --esp-path|--boot-path)
  42                 if [[ -z $cur ]]; then
  43                     comps=$(compgen -A directory -- "/" )
  44                 else
  45                     comps=$(compgen -A directory -- "$cur" )
  46                 fi
  47                 compopt -o filenames
  48                 ;;
  49             --make-machine-id-directory)
  50                 comps="yes no auto"
  51                 ;;
  52             --image|--root)
  53                 compopt -o nospace
  54                 comps=$( compgen -A file -- "$cur" )
  55                 ;;
  56             --install-source)
  57                 comps="image host auto"
  58                 ;;
  59             --random-seed)
  60                 comps="yes no"
  61                 ;;
  62         esac
  63         COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  64         return 0
  65     fi
  66
  67     if [[ "$cur" = -* ]]; then
  68         COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  69         return 0
  70     fi
  71
  72     local -A VERBS=(
  73         # systemd-efi-options takes an argument, but it is free-form, so we cannot complete it
  74         [STANDALONE]='help status install update remove is-installed random-seed systemd-efi-options list set-timeout set-timeout-oneshot cleanup'
  75         [BOOTENTRY]='set-default set-oneshot unlink'
  76         [BOOLEAN]='reboot-to-firmware'
  77         [FILE]='kernel-identify kernel-inspect'
  78     )
  79
  80     for ((i=0; i < COMP_CWORD; i++)); do
  81         if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]}; then
  82             verb=${COMP_WORDS[i]}
  83             break
  84         fi
  85     done
  86
  87     if [[ -z ${verb-} ]]; then
  88         comps=${VERBS[*]}
  89     elif __contains_word "$verb" ${VERBS[STANDALONE]}; then
  90         comps=''
  91     elif __contains_word "$verb" ${VERBS[BOOTENTRY]}; then
  92         name=
  93         for ((i++; i < COMP_CWORD; i++)); do
  94             if ! __contains_word "${COMP_WORDS[i]}" ${OPTS[*]} ${VERBS[*]} &&
  95                     ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
  96                 name=${COMP_WORDS[i]}
  97                 break
  98             fi
  99         done
 100
 101         if [[ -z $name ]]; then
 102             comps=$( __get_entry_ids )
 103         else
 104             comps=''
 105         fi
 106     elif __contains_word "$verb" ${VERBS[BOOLEAN]}; then
 107         comps="yes no"
 108     elif __contains_word "$verb" ${VERBS[FILE]}; then
 109         comps=$( compgen -A file -- "$cur" )
 110         compopt -o filenames
 111     fi
 112
 113     COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
 114     return 0
 115 }
 116
 117 complete -F _bootctl bootctl