libvirt/tools/bash-completion/vsh.in
Andrea Bolognani cf66ee8ddc tools: Generate per-command bash completion script
The current setup uses a single script that is symlinked twice
and that tries to configure bash completion for both virsh and
virt-admin, even if only one of them is installed. This also
forces us to have a -bash-completion RPM package that only
contains the tiny shared file.

Rework bash completion support so that two scripts are
generated, each one tailored to a specific command.

Since the shared script no longer exists after this change,
the corresponding RPM package becomes empty.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-04-22 11:01:27 +02:00

68 lines
2.0 KiB
Bash

#
# @command@ completion support
#
_@command@_complete()
{
local words cword c=0 i=0 cur RO URI CMDLINE INPUT A
# Here, $COMP_WORDS is an array of words on the bash
# command line that user wants to complete. However, when
# parsing command line, the default set of word breaks is
# applied. This doesn't work for us as it mangles libvirt
# arguments, e.g. connection URI (with the default set it's
# split into multiple items within the array). Fortunately,
# there's a fixup function for the array.
_get_comp_words_by_ref -n "\"'><=;|&(:" -w words -i cword
COMP_WORDS=( "${words[@]}" )
COMP_CWORD=${cword}
cur=${COMP_WORDS[$COMP_CWORD]}
# See what URI is user trying to connect to and if they are
# connecting RO. Honour that.
while [ $c -le $COMP_CWORD ]; do
word="${COMP_WORDS[c]}"
case "$word" in
-r|--readonly) RO=1 ;;
-c|--connect) c=$((++c)); URI=${COMP_WORDS[c]} ;;
*) if [ $c -ne 0 ] && [ $i -eq 0 ]; then i=$c; break; fi ;;
esac
c=$((++c))
done
CMDLINE=( )
if [ -n "${RO}" ]; then
CMDLINE+=("-r")
fi
if [ -n "${URI}" ]; then
CMDLINE+=("-c" "${URI}")
fi
INPUT=( "${COMP_WORDS[@]:$i:$COMP_CWORD}" )
INPUT[-1]=${INPUT[-1]//\\:/:}
# Uncomment these lines for easy debug.
# echo;
# echo "RO=${flag_ro}";
# echo "URI=${URI}";
# echo "CMDLINE=${CMDLINE}";
# echo "INPUT[${#INPUT[@]}]=**${INPUT[@]}**";
# echo "cur=${cur}";
# echo;
# return 0;
# Small shortcut here. According to manpage:
# When the function is executed, the first argument ($1) is
# the name of the command whose arguments are being
# completed.
# Therefore, we might just run $1.
IFS=$'\n' A=($($1 ${CMDLINE[@]} complete -- "${INPUT[@]}" 2>/dev/null))
COMPREPLY=($(compgen -W "${A[*]%--}" -- ${cur}))
__ltrim_colon_completions "$cur"
return 0
} &&
complete -o default -o filenames -F _@command@_complete @command@
# vim: ft=sh:et:ts=4:sw=4:tw=80