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https://github.com/aljazceru/kata-containers.git
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706904524a
Add kata command line bash completion Fixes #110 Signed-off-by: Ricardo Aravena <raravena@branch.io>
139 lines
3.4 KiB
Bash
139 lines
3.4 KiB
Bash
#!/bin/bash
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#
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# Copyright (c) 2018 Intel Corporation
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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#---------------------------------------------------------------------
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# Description: Bash tab completion script.
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#---------------------------------------------------------------------
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_kataruntime='kata-runtime'
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# Return a list of sub-commands
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_kata_get_subcmds()
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{
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"$_kataruntime" --generate-bash-completion
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}
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# Return a list of options for the specified sub-command
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#
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# Limitation: Note that this only supports long-options.
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_kata_get_subcmd_options()
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{
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local subcmd="$1"
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"$_kataruntime" "$subcmd" --help |\
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egrep -- "^ *--[^ ]*[ ][^ ]*" |\
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awk '{print $1}' |\
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tr -d \, |\
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sort
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}
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# Return a list of global options
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_kata_get_global_options()
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{
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_kata_get_subcmd_options ""
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}
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# Return name of subcmd already seen, or ""
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_kata_subcmd_seen()
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{
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local subcmds=$(_kata_get_subcmds)
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local cmd
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for cmd in $subcmds; do
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local word
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for word in ${COMP_WORDS[@]}; do
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[ "$cmd" = "$word" ] && echo "$cmd"
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done
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done
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echo ""
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}
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# Return 0 if the specified sub-command requires the name of an
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# *existing* container, else 1.
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_kata_subcmd_needs_existing_container()
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{
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local subcmd="$1"
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local cmd
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for cmd in \
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'kata-check' \
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'kata-env' \
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'create' \
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'help' \
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'list' \
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'version'; do
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[ "$cmd" = "$subcmd" ] && return 1
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done
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return 0
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}
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# Returns a list of container names
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_kata_get_containers()
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{
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# Commands that manipulate containers need root privileges.
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# If the user isn't running as root, don't attempt to obtain a list
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# as it will result in an error.
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[ $(id -u) -eq 0 ] || return
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"$_kataruntime" list --quiet
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}
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_kata_bash_autocomplete() {
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COMPREPLY=()
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local opts opt
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local cur="${COMP_WORDS[COMP_CWORD]}"
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for opt in \
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'-h' '--help' 'help' \
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'-v' '--version' 'version';
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do
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# No further completions possible for these commands
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[ "$cur" = "$opt" ] && return 0
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done
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local subcmd_seen=$(_kata_subcmd_seen)
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if [ -n "$subcmd_seen" ]; then
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_kata_subcmd_needs_existing_container "$subcmd_seen"
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local container_cmd=$?
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if [ -n "$cur" ]; then
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# Complete with local options and maybe container names
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opts=$(_kata_get_subcmd_options "$subcmd_seen")
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[ $container_cmd -eq 0 ] && opts="$opts $(_kata_get_containers)"
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elif [[ "${cur}" == -* ]]; then
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# Complete with local options
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opts=$(_kata_get_subcmd_options "$subcmd_seen")
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else
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# Potentially complete with container names
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[ $container_cmd -eq 0 ] && opts="$(_kata_get_containers)"
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fi
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else
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if [ -n "$cur" ]; then
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# Complete with global options and subcmds
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opts="$opts $(_kata_get_global_options)"
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opts="$opts $(_kata_get_subcmds)"
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elif [[ "${cur}" == -* ]]; then
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# Complete with global options
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opts=$(_kata_get_global_options)
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else
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# Complete with subcmds
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opts=$(_kata_get_subcmds)
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fi
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fi
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[ -n "$opts" ] && COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
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return 0
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}
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complete -F _kata_bash_autocomplete "$_kataruntime"
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