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# GNU Guix --- Functional package management for GNU
# Copyright © 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
# Copyright © 2021 Tobias Geerinck-Rice <me@tobias.gr>
#
# 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
declare _guix_commands
_guix_complete_command ()
{
local word_at_point="${COMP_WORDS[$COMP_CWORD]}"
if [ -z "$_guix_commands" ]
then
# Cache the list of commands to speed things up.
_guix_commands="$(guix --help 2> /dev/null \
| grep '^ ' \
| sed '-es/^ *\([a-z-]\+\).*$/\1/g')"
fi
COMPREPLY=($(compgen -W "$_guix_commands" -- "$word_at_point"))
}
_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_CWORD]}"))
}
_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" -- "$prefix"))
}
_guix_complete_option ()
{
local command="${COMP_WORDS[$1]}"
local subcommand="${COMP_WORDS[$(($1 + 1))]}"
if _guix_is_option "$subcommand"
then
subcommand=""
fi
local options="$(${COMP_WORDS[0]} $command $subcommand --help 2> /dev/null \
| grep '^ \+-' \
| sed -e's/^.*--\([a-zA-Z0-9_-]\+\)\(=\?\).*/--\1\2/g')"
compopt -o nospace
COMPREPLY=($(compgen -W "$options" -- "$2"))
}
_guix_is_option ()
{
case "$1" in
-*)
true
;;
*)
false
;;
esac
}
_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
$result
}
_guix_is_dash_f ()
{
[ "${COMP_WORDS[$COMP_CWORD - 1]}" = "-f" ] \
|| { case "${COMP_WORDS[$COMP_CWORD]}" in
--file=*|--install-from-file=*) true;;
*) false;;
esac }
}
_guix_is_dash_l ()
{
[ "${COMP_WORDS[$COMP_CWORD - 1]}" = "-l" ] \
|| { case "${COMP_WORDS[$COMP_CWORD]}" in
--load=*) true;;
*) false;;
esac }
}
_guix_is_dash_L ()
{
[ "${COMP_WORDS[$COMP_CWORD - 1]}" = "-L" ] \
|| { case "${COMP_WORDS[$COMP_CWORD]}" in
--load-path=*) true;;
*) false;;
esac }
}
_guix_is_dash_m ()
{
[ "${COMP_WORDS[$COMP_CWORD - 1]}" = "-m" ] \
|| { case "${COMP_WORDS[$COMP_CWORD]}" in
--manifest=*) true;;
*) false;;
esac }
}
_guix_is_dash_C ()
{
[ "${COMP_WORDS[$COMP_CWORD - 1]}" = "-C" ] \
|| { case "${COMP_WORDS[$COMP_CWORD]}" in
--channels=*) true;;
*) false;;
esac }
}
_guix_is_dash_p ()
{
[ "${COMP_WORDS[$COMP_CWORD - 1]}" = "-p" ] \
|| { case "${COMP_WORDS[$COMP_CWORD]}" in
--profile=*) true;;
*) false;;
esac }
}
_guix_complete_file ()
{
# Let Readline complete file names.
compopt -o default
COMPREPLY=()
}
_guix_complete_pid ()
{
local pids="$(cd /proc; echo [0-9]*)"
COMPREPLY=($(compgen -W "$pids" -- "$1"))
}
_guix_complete ()
{
local word_count=${#COMP_WORDS[*]}
local word_at_point="${COMP_WORDS[$COMP_CWORD]}"
# Find the innermost command at point, e.g. "build" in the case of
# "guix time-machine OPTIONS -- build<Tab>" -- but "time-machine" if
# point is moved before "build".
local command_index=0
local command
local word_index=0
local word
local expect_command="true"
while [[ $((++word_index)) -le COMP_CWORD ]]
do
word="${COMP_WORDS[$word_index]}"
if $expect_command
then
command_index=$word_index
command="$word"
expect_command="false"
continue
fi
if [[ "$word" = "--" ]]
then
case "$command" in
environment)
break
;;
time-machine)
expect_command="true"
;;
esac
fi
done
case $COMP_CWORD in
$command_index)
_guix_complete_command
;;
*)
if [[ "$command" = "package" ]]
then
if _guix_is_dash_L || _guix_is_dash_m || _guix_is_dash_p || _guix_is_dash_f
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 [[ "$command" = "install" ]]
then
if _guix_is_dash_L || _guix_is_dash_m || _guix_is_dash_p
then
_guix_complete_file
else
_guix_complete_available_package "$word_at_point"
fi
elif [[ "$command" = "upgrade" || "$command" = "remove" ]]
then
if _guix_is_dash_L || _guix_is_dash_m || _guix_is_dash_p
then
_guix_complete_file
else
_guix_complete_installed_package "$word_at_point"
fi
elif [[ "$command" = "build" ]]
then
if _guix_is_dash_L || _guix_is_dash_m || _guix_is_dash_f
then
_guix_complete_file
else
_guix_complete_available_package "$word_at_point"
fi
elif [[ "$command" = "environment" ]]
then
if _guix_is_dash_L || _guix_is_dash_m || _guix_is_dash_p || _guix_is_dash_l
then
_guix_complete_file
elif _guix_is_option "$word_at_point"
then
_guix_complete_option "$command_index" "$word_at_point"
else
_guix_complete_available_package "$word_at_point"
fi
elif [[ "$command" = "download" || "$command" = "gc" || "$command" = "hash" ]]
then
_guix_complete_file
elif [[ "$command" = "system" ]]
then
case $COMP_CWORD in
2) _guix_complete_subcommand;;
*) _guix_complete_file;; # TODO: restrict to *.scm
esac
elif [[ "$command" = "pull" ]]
then
if _guix_is_dash_C || _guix_is_dash_p
then
_guix_complete_file
fi
elif [[ "$command" = "time-machine" ]]
then
if _guix_is_dash_C
then
_guix_complete_file
else
_guix_complete_option "$command_index" "$word_at_point"
fi
elif [[ "$command" = "container" ]]
then
case $COMP_CWORD in
2) _guix_complete_subcommand;;
3) _guix_complete_pid "$word_at_point";;
*) _guix_complete_file;;
esac
elif [[ "$command" = "import" ]]
then
_guix_complete_subcommand
elif [[ "$command" = "weather" ]]
then
if _guix_is_dash_m
then
_guix_complete_file
fi
else
_guix_complete_available_package "$word_at_point"
fi
;;
esac
if [[ -z "$COMPREPLY" && COMP_CWORD -gt command_index ]] &&
_guix_is_option "$word_at_point"
then
_guix_complete_option "$command_index" "$word_at_point"
fi
}
complete -F _guix_complete guix
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