systemd/shell-completion/bash/udevadm

# udevadm(8) completion                                   -*- shell-script -*-
# SPDX-License-Identifier: LGPL-2.1+
#
# This file is part of systemd.
#
# Copyright 2010 Ran Benita
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# systemd is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with systemd; If not, see <http://www.gnu.org/licenses/>.

__contains_word () {
        local w word=$1; shift
        for w in "$@"; do
                [[ $w = "$word" ]] && return
        done
}

__get_all_sysdevs() {
        local -a devs=(/sys/bus/*/devices/*/ /sys/class/*/*/)
        printf '%s\n' "${devs[@]%/}"
}

_udevadm() {
        local i verb comps
        local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
        local OPTS='-h --help --version --debug'

        local verbs=(info trigger settle control monitor hwdb test-builtin test)

        for ((i=0; i < COMP_CWORD; i++)); do
                if __contains_word "${COMP_WORDS[i]}" "${verbs[@]}" &&
                 ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
                        verb=${COMP_WORDS[i]}
                        break
                fi
        done

        if [[ -z $verb ]]; then
                COMPREPLY=( $(compgen -W '${OPTS[*]} ${verbs[*]}' -- "$cur") )
                return 0
        fi

        case $verb in
                'info')
                        if [[ $cur = -* ]]; then
                                comps='--help --query= --path= --name= --root --attribute-walk --export-db --cleanup-db'
                        else
                                comps=$( __get_all_sysdevs )
                        fi
                        ;;
                'trigger')
                        comps='--help --verbose --dry-run --type= --action= --subsystem-match=
                               --subsystem-nomatch= --attr-match= --attr-nomatch= --property-match=
                               --tag-match= --sysname-match= --parent-match='
                        ;;
                'settle')
                        comps='--help --timeout= --seq-start= --seq-end= --exit-if-exists= --quiet'
                        ;;
                'control')
                        comps='--help --exit --log-priority= --stop-exec-queue --start-exec-queue
                               --reload --property= --children-max= --timeout='
                        ;;
                'monitor')
                        comps='--help --kernel --udev --property --subsystem-match= --tag-match='
                        ;;
                'hwdb')
                        comps='--help --update --test='
                        ;;
                'test')
                        if [[ $cur = -* ]]; then
                                comps='--help --action='
                        else
                                comps=$( __get_all_sysdevs )
                        fi
                        ;;
                'test-builtin')
                        comps='blkid btrfs hwdb input_id keyboard kmod net_id net_setup_link path_id usb_id uaccess'
                        ;;
                *)
                        comps=${VERBS[*]}
                        ;;
        esac

        COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
        return 0
}

complete -F _udevadm udevadm