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, 105 insertions, 0 deletions

diff --git a/shell-completion/bash/journalctl b/shell-completion/bash/journalctl
new file mode 100644
index 0000000000..1fca5ad31b
--- /dev/null
+++ b/shell-completion/bash/journalctl
@@ -0,0 +1,105 @@
+# journalctl(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/>.
+
+__contains_word () {
+        local word=$1; shift
+        for w in $*; do [[ $w = $word ]] && return 0; done
+        return 1
+}
+
+__journal_fields=(MESSAGE{,_ID} PRIORITY CODE_{FILE,LINE,FUNC}
+                  ERRNO SYSLOG_{FACILITY,IDENTIFIER,PID} COREDUMP_EXE
+                  _{P,U,G}ID _COMM _EXE _CMDLINE
+                  _AUDIT_{SESSION,LOGINUID}
+                  _SYSTEMD_{CGROUP,SESSION,UNIT,OWNER_UID}
+                  _SELINUX_CONTEXT _SOURCE_REALTIME_TIMESTAMP
+                  _{BOOT,MACHINE}_ID _HOSTNAME _TRANSPORT
+                  _KERNEL_{DEVICE,SUBSYSTEM}
+                  _UDEV_{SYSNAME,DEVNODE,DEVLINK}
+                  __CURSOR __{REALTIME,MONOTONIC}_TIMESTAMP)
+
+_journalctl() {
+        local field_vals= cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
+        local -A OPTS=(
+                [STANDALONE]='-a --all --full
+                              -b --this-boot --disk-usage -f --follow --header
+                              -h --help -l --local --new-id128 -m --merge --no-pager
+                              --no-tail -q --quiet --setup-keys --this-boot --verify
+                              --version --list-catalog --update-catalog'
+                       [ARG]='-D --directory -F --field -o --output -u --unit --user-unit'
+                [ARGUNKNOWN]='-c --cursor --interval -n --lines -p --priority --since --until
+                              --verify-key'
+        )
+
+        if __contains_word "$prev" ${OPTS[ARG]} ${OPTS[ARGUNKNOWN]}; then
+                case $prev in
+                        --directory|-D)
+                                comps=$(compgen -d -- "$cur")
+                                compopt -o filenames
+                        ;;
+                        --output|-o)
+                                comps='short short-monotonic verbose export json cat'
+                        ;;
+                        --field|-F)
+                                comps=${__journal_fields[*]}
+                        ;;
+                        --unit|-u)
+                                comps=$(journalctl -F '_SYSTEMD_UNIT')
+                        ;;
+                        --user-unit)
+                                comps=$(journalctl -F '_SYSTEMD_USER_UNIT')
+                        ;;
+                        *)
+                                return 0
+                        ;;
+                esac
+                COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
+                return 0
+        fi
+
+        if [[ $cur = -* ]]; then
+                COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
+                return 0
+        elif [[ $cur = *=* ]]; then
+                mapfile -t field_vals < <(journalctl -F "${prev%=}" 2>/dev/null)
+                COMPREPLY=( $(compgen -W '${field_vals[*]}' -- "${cur#=}") )
+        elif [[ $cur = /dev* ]]; then
+                compopt -o filenames
+                COMPREPLY=( $(compgen -f -- "${cur}") )
+        elif [[ $cur = /* ]]; then
+                # Append /dev/ to the list of completions, so that
+                # after typing /<TAB><TAB> the user sees /dev/ as one
+                # of the alternatives. Later on the rule above will
+                # take care of showing device files in /dev/.
+                mapfile -t field_vals < <(journalctl -F "_EXE" 2>/dev/null; echo '/dev/')
+                COMPREPLY=( $(compgen -W '${field_vals[*]}' -- "${cur}") )
+                if [[ "${COMPREPLY[@]}" = '/dev/' ]]; then
+                    compopt -o filenames
+                    COMPREPLY=( $(compgen -f -- "${cur}") )
+                fi
+        elif [[ $prev = '=' ]]; then
+                mapfile -t field_vals < <(journalctl -F "${COMP_WORDS[COMP_CWORD-2]}" 2>/dev/null)
+                COMPREPLY=( $(compgen -W '${field_vals[*]}' -- "$cur") )
+        else
+                compopt -o nospace
+                COMPREPLY=( $(compgen -W '${__journal_fields[*]}' -S= -- "$cur") )
+        fi
+}
+
+complete -F _journalctl journalctl