# 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 cur prev
        _get_comp_words_by_ref cur prev
        local OPTS='-h --help --version --debug'

        local VERBS_INFO='info'
        local VERBS_TRIGGER='trigger'
        local VERBS_SETTLE='settle'
        local VERBS_CONTROL='control'
        local VERBS_MONITOR='monitor'
        local VERBS_HWDB='hwdb'
        local VERBS_TESTBUILTIN='test-builtin'
        local VERBS_TEST='test'
        local VERBS="$VERBS_INFO $VERBS_TRIGGER $VERBS_SETTLE $VERBS_CONTROL $VERBS_MONITOR $VERBS_HWDB $VERBS_TESTBUILTIN $VERBS_TEST"

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

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

        if [[ -z $verb ]]; then
                comps="$VERBS"
        elif __contains_word "$verb" $VERBS_INFO; then
                if [[ $cur = -* ]]; then
                        comps='--help --query= --path= --name= --root --attribute-walk --export-db --cleanup-db'
                else
                        comps=$( __get_all_sysdevs )
                fi

        elif __contains_word "$verb" $VERBS_TRIGGER; then
                comps='--help --verbose --dry-run --type= --action= --subsystem-match=
                       --subsystem-nomatch= --attr-match= --attr-nomatch= --property-match=
                       --tag-match= --sysname-match= --parent-match='

        elif __contains_word "$verb" $VERBS_SETTLE; then
                comps='--help --timeout= --seq-start= --seq-end= --exit-if-exists= --quiet'

        elif __contains_word "$verb" $VERBS_CONTROL; then
                comps='--help --exit --log-priority= --stop-exec-queue --start-exec-queue
                       --reload --property= --children-max= --timeout='

        elif __contains_word "$verb" $VERBS_MONITOR; then
                comps='--help --kernel --udev --property --subsystem-match= --tag-match='

        elif __contains_word "$verb" $VERBS_HWDB; then
                comps='--help --update --test='

        elif __contains_word "$verb" $VERBS_TEST; then
                if [[ $cur = -* ]]; then
                        comps='--help --action='
                else
                        comps=$( __get_all_sysdevs )
                fi

        elif __contains_word "$verb" $VERBS_TESTBUILTIN; then
                      comps='blkid btrfs hwdb keyboard input_id kmod net_id net_setup_link path_id usb_id uaccess'
        fi

        COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
        return 0
}
complete -F _udevadm udevadm