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# GNU Guix --- Functional package management for GNU
# Copyright © 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
#
# This file is part of GNU Guix.
#
# GNU Guix is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# GNU Guix 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 General Public License
# along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
# Bash completion for Guix commands.
declare _guix_available_packages
_guix_complete_subcommand ()
{
local command="${COMP_WORDS[1]}"
local subcommands="$(${COMP_WORDS[0]} $command --help 2> /dev/null \
| grep '^ [a-z]' \
| sed -e's/^ \+\([a-z-]\+\).*$/\1/g')"
COMPREPLY=($(compgen -W "$subcommands" -- "${COMP_WORDS[${#COMP_WORDS[*]} - 1]}"))
}
_guix_complete_available_package ()
{
local prefix="$1"
if [ -z "$_guix_available_packages" ]
then
# Cache the complete list because it rarely changes and makes
# completion much faster.
_guix_available_packages="$(${COMP_WORDS[0]} package -A 2> /dev/null \
| cut -f1)"
fi
COMPREPLY=($(compgen -W "$_guix_available_packages" -- "$prefix"))
}
_guix_complete_installed_package ()
{
# Here we do not cache the list of installed packages because that
# may change over time and the list is relatively small anyway.
local prefix="$1"
local packages="$(${COMP_WORDS[0]} package -I "^$prefix" 2> /dev/null \
| cut -f1)"
COMPREPLY=($(compgen -W "$packages" -- "$prefix"))
}
_guix_complete_option ()
{
local subcommand
case "${COMP_WORDS[2]}" in
-*) subcommand="";;
[a-z]*) subcommand="${COMP_WORDS[2]}";;
esac
local options="$(${COMP_WORDS[0]} ${COMP_WORDS[1]} $subcommand --help 2> /dev/null \
| grep '^ \+-' \
| sed -e's/^.*--\([a-zA-Z0-9_-]\+\)\(=\?\).*/--\1\2/g')"
compopt -o nospace
COMPREPLY=($(compgen -W "$options" -- "${COMP_WORDS[${#COMP_WORDS[*]} - 1]}"))
}
_guix_is_command ()
{
local word
local result="false"
for word in ${COMP_WORDS[*]}
do
if [ "$word" = "$1" ]
then
result=true
break
fi
done
$result
}
_guix_is_removing ()
{
local word
local result="false"
for word in ${COMP_WORDS[*]}
do
case "$word" in
--remove|--remove=*|-r)
result=true
break
;;
esac
done
$result
}
_guix_is_dash_L ()
{
[ "${COMP_WORDS[$COMP_CWORD - 1]}" = "-L" ] \
|| { case "${COMP_WORDS[$COMP_CWORD]}" in
--load-path=*) true;;
*) false;;
esac }
}
_guix_complete_file ()
{
# Let Readline complete file names.
compopt -o default
COMPREPLY=()
}
_guix_complete_pid ()
{
local pids="$(cd /proc; echo [0-9]*)"
COMPREPLY=($(compgen -W "$pids" -- "$1"))
}
declare _guix_subcommands
_guix_complete ()
{
local word_count=${#COMP_WORDS[*]}
local word_at_point="${COMP_WORDS[$COMP_CWORD]}"
if [ "$COMP_CWORD" -gt 1 ]
then
case "$word_at_point" in
-*)
_guix_complete_option "$word_at_point"
return
;;
esac
fi
case $COMP_CWORD in
1)
if [ -z "$_guix_subcommands" ]
then
# Cache the list of subcommands to speed things up.
_guix_subcommands="$(guix --help 2> /dev/null \
| grep '^ ' | cut -c 2-)"
fi
COMPREPLY=($(compgen -W "$_guix_subcommands" -- "$word_at_point"))
;;
*)
if _guix_is_command "package"
then
if _guix_is_dash_L
then
_guix_complete_file
elif _guix_is_removing
then
_guix_complete_installed_package "$word_at_point"
else
_guix_complete_available_package "$word_at_point"
fi
elif _guix_is_command "system"
then
case $COMP_CWORD in
2) _guix_complete_subcommand;;
*) _guix_complete_file;; # TODO: restrict to *.scm
esac
elif _guix_is_command "container"
then
case $COMP_CWORD in
2) _guix_complete_subcommand;;
3) _guix_complete_pid "$word_at_point";;
*) _guix_complete_file;;
esac
elif _guix_is_command "import"
then
_guix_complete_subcommand
elif _guix_is_command "hash" || _guix_is_command "gc"
then
_guix_complete_file
else
_guix_complete_available_package "$word_at_point"
fi
;;
esac
}
complete -F _guix_complete guix
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