bash-completion: split completions and move to new location

Split the large bash completion script into separate, smaller files each
named after the binary it is used for and move the files to
/usr/share/bash-completion/completions. This way the completions can be
loaded on demand and we only install the completions for the tools we
actually build. The old path /etc/bash_completion.d/ is deprecated and
will disappear in the future.

1 files changed, 202 insertions, 0 deletions

diff --git a/shell-completion/bash/systemctl b/shell-completion/bash/systemctl
new file mode 100644
index 0000000000..27d89ec13a
--- /dev/null
+++ b/shell-completion/bash/systemctl
@@ -0,0 +1,202 @@
+# systemctl(1) completion                                 -*- shell-script -*-
+#
+# 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/>.
+
+__systemctl() {
+        systemctl --full --no-legend "$@"
+}
+
+__contains_word () {
+        local word=$1; shift
+        for w in $*; do [[ $w = $word ]] && return 0; done
+        return 1
+}
+
+__filter_units_by_property () {
+        local property=$1 value=$2 ; shift 2
+        local units=("$@")
+        local props
+        IFS=$'\n' read -rd '' -a props < \
+            <(__systemctl show --property "$property" -- "${units[@]}")
+        for ((i=0; $i < ${#units[*]}; i++)); do
+                if [[ "${props[i]}" = "$property=$value" ]]; then
+                        printf "%s\n" "${units[i]}"
+                fi
+        done
+}
+
+__get_all_units      () { __systemctl list-units --all \
+        | { while read -r a b; do printf "%s\n" "$a"; done; }; }
+__get_active_units   () { __systemctl list-units       \
+        | { while read -r a b; do printf "%s\n" "$a"; done; }; }
+__get_inactive_units () { __systemctl list-units --all \
+        | { while read -r a b c d; do [[ $c == "inactive" ]] && printf "%s\n" "$a"; done; }; }
+__get_failed_units   () { __systemctl list-units       \
+        | { while read -r a b c d; do [[ $c == "failed"   ]] && printf "%s\n" "$a"; done; }; }
+__get_enabled_units  () { __systemctl list-unit-files  \
+        | { while read -r a b c  ; do [[ $b == "enabled"  ]] && printf "%s\n" "$a"; done; }; }
+__get_disabled_units () { __systemctl list-unit-files  \
+        | { while read -r a b c  ; do [[ $b == "disabled" ]] && printf "%s\n" "$a"; done; }; }
+__get_masked_units   () { __systemctl list-unit-files  \
+        | { while read -r a b c  ; do [[ $b == "masked"   ]] && printf "%s\n" "$a"; done; }; }
+
+_systemctl () {
+        local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
+        local i verb comps
+
+        local -A OPTS=(
+               [STANDALONE]='--all -a --defaults --fail --ignore-dependencies --failed --force -f --full --global
+                             --help -h --no-ask-password --no-block --no-legend --no-pager --no-reload --no-wall
+                             --quiet -q --privileged -P --system --user --version --runtime'
+                      [ARG]='--host -H --kill-mode --kill-who --property -p --signal -s --type -t --root'
+        )
+
+        if __contains_word "$prev" ${OPTS[ARG]}; then
+                case $prev in
+                        --signal|-s)
+                                comps=$(compgen -A signal)
+                        ;;
+                        --type|-t)
+                                comps='automount device mount path service snapshot socket swap target timer'
+                        ;;
+                        --kill-who)
+                                comps='all control main'
+                        ;;
+                        --kill-mode)
+                                comps='control-group process'
+                        ;;
+                        --root)
+                                comps=$(compgen -A directory -- "$cur" )
+                                compopt -o filenames
+                        ;;
+                        --host|-H)
+                                comps=$(compgen -A hostname)
+                        ;;
+                        --property|-p)
+                                comps=''
+                        ;;
+                esac
+                COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
+                return 0
+        fi
+
+
+        if [[ "$cur" = -* ]]; then
+                COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
+                return 0
+        fi
+
+        local -A VERBS=(
+                [ALL_UNITS]='is-active is-failed is-enabled status show mask preset'
+            [ENABLED_UNITS]='disable reenable'
+           [DISABLED_UNITS]='enable'
+             [FAILED_UNITS]='reset-failed'
+          [STARTABLE_UNITS]='start'
+          [STOPPABLE_UNITS]='stop condstop kill try-restart condrestart'
+         [ISOLATABLE_UNITS]='isolate'
+         [RELOADABLE_UNITS]='reload condreload reload-or-try-restart force-reload'
+        [RESTARTABLE_UNITS]='restart reload-or-restart'
+             [MASKED_UNITS]='unmask'
+                     [JOBS]='cancel'
+                [SNAPSHOTS]='delete'
+                     [ENVS]='set-environment unset-environment'
+               [STANDALONE]='daemon-reexec daemon-reload default dump
+                             emergency exit halt hibernate hybrid-sleep kexec list-jobs
+                             list-units list-unit-files poweroff reboot rescue
+                             show-environment suspend'
+                     [NAME]='snapshot load'
+                     [FILE]='link'
+        )
+
+        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 $verb ]]; then
+                comps="${VERBS[*]}"
+
+        elif __contains_word "$verb" ${VERBS[ALL_UNITS]}; then
+                comps=$( __get_all_units )
+
+        elif __contains_word "$verb" ${VERBS[ENABLED_UNITS]}; then
+                comps=$( __get_enabled_units )
+
+        elif __contains_word "$verb" ${VERBS[DISABLED_UNITS]}; then
+                comps=$( __get_disabled_units )
+
+        elif __contains_word "$verb" ${VERBS[STARTABLE_UNITS]}; then
+                comps=$( __filter_units_by_property CanStart yes \
+                      $( __get_inactive_units \
+                        | while read -r line; do \
+                                [[ "$line" =~ \.(device|snapshot)$ ]] || printf "%s\n" "$line"; \
+                        done ))
+
+        elif __contains_word "$verb" ${VERBS[RESTARTABLE_UNITS]}; then
+                comps=$( __filter_units_by_property CanStart yes \
+                      $( __get_all_units \
+                        | while read -r line; do \
+                                [[ "$line" =~ \.(device|snapshot|socket|timer)$ ]] || printf "%s\n" "$line"; \
+                        done ))
+
+        elif __contains_word "$verb" ${VERBS[STOPPABLE_UNITS]}; then
+                comps=$( __filter_units_by_property CanStop yes \
+                      $( __get_active_units ) )
+
+        elif __contains_word "$verb" ${VERBS[RELOADABLE_UNITS]}; then
+                comps=$( __filter_units_by_property CanReload yes \
+                      $( __get_active_units ) )
+
+        elif __contains_word "$verb" ${VERBS[ISOLATABLE_UNITS]}; then
+                comps=$( __filter_units_by_property AllowIsolate yes \
+                      $( __get_all_units ) )
+
+        elif __contains_word "$verb" ${VERBS[FAILED_UNITS]}; then
+                comps=$( __get_failed_units )
+
+        elif __contains_word "$verb" ${VERBS[MASKED_UNITS]}; then
+                comps=$( __get_masked_units )
+
+        elif __contains_word "$verb" ${VERBS[STANDALONE]} ${VERBS[NAME]}; then
+                comps=''
+
+        elif __contains_word "$verb" ${VERBS[JOBS]}; then
+                comps=$( __systemctl list-jobs | { while read -r a b; do printf "%s\n" "$a"; done; } )
+
+        elif __contains_word "$verb" ${VERBS[SNAPSHOTS]}; then
+                comps=$( __systemctl list-units --type snapshot --full --all \
+                        | { while read -r a b; do printf "%s\n" "$a"; done; } )
+
+        elif __contains_word "$verb" ${VERBS[ENVS]}; then
+                comps=$( __systemctl show-environment \
+                    | while read -r line; do printf "%s\n" "${line%%=*}=";done )
+                compopt -o nospace
+
+        elif __contains_word "$verb" ${VERBS[FILE]}; then
+                comps=$( compgen -A file -- "$cur" )
+                compopt -o filenames
+        fi
+
+        COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
+        return 0
+}
+
+complete -F _systemctl systemctl