/
bashCompletion.go
210 lines (186 loc) · 5.32 KB
/
bashCompletion.go
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package kpexec
const (
// Reference - https://github.com/kubernetes/kubectl/blob/v0.20.2/pkg/cmd/cmd.go
bashCompletionFunc = `
# call kubectl get $1,
__kubectl_debug_out()
{
local cmd="$1"
__kpexec_debug "${FUNCNAME[1]}: get completion by ${cmd}"
eval "${cmd} 2>/dev/null"
}
__kubectl_override_flag_list=(--kubeconfig --cluster --user --context --namespace --server -n -s)
__kubectl_override_flags()
{
local ${__kubectl_override_flag_list[*]##*-} two_word_of of var
for w in "${words[@]}"; do
if [ -n "${two_word_of}" ]; then
eval "${two_word_of##*-}=\"${two_word_of}=\${w}\""
two_word_of=
continue
fi
for of in "${__kubectl_override_flag_list[@]}"; do
case "${w}" in
${of}=*)
eval "${of##*-}=\"${w}\""
;;
${of})
two_word_of="${of}"
;;
esac
done
done
for var in "${__kubectl_override_flag_list[@]##*-}"; do
if eval "test -n \"\$${var}\""; then
eval "echo -n \${${var}}' '"
fi
done
}
# $1 is the name of resource (required)
# $2 is template string for kubectl get (optional)
__kubectl_parse_get()
{
local template
template="${2:-"{{ range .items }}{{ .metadata.name }} {{ end }}"}"
local kubectl_out
if kubectl_out=$(__kubectl_debug_out "kubectl get $(__kubectl_override_flags) -o template --template=\"${template}\" \"$1\""); then
COMPREPLY+=( $( compgen -W "${kubectl_out[*]}" -- "$cur" ) )
fi
}
__kubectl_get_resource_namespace()
{
__kubectl_parse_get "namespace"
}
__kubectl_get_resource_pod()
{
__kubectl_parse_get "pod"
}
# $1 is the name of the pod we want to get the list of containers inside
__kubectl_get_containers()
{
local template
template="{{ range .spec.initContainers }}{{ .name }} {{end}}{{ range .spec.containers }}{{ .name }} {{ end }}"
__kpexec_debug "${FUNCNAME} nouns are ${nouns[*]}"
local len="${#nouns[@]}"
if [[ ${len} -ne 1 ]]; then
return
fi
local last=${nouns[${len} -1]}
local kubectl_out
if kubectl_out=$(__kubectl_debug_out "kubectl get $(__kubectl_override_flags) -o template --template=\"${template}\" pods \"${last}\""); then
COMPREPLY=( $( compgen -W "${kubectl_out[*]}" -- "$cur" ) )
fi
}
__kpexec_custom_func() {
case ${last_command} in
kpexec)
__kubectl_get_resource_pod
return
;;
*)
;;
esac
}
`
// Reference - https://github.com/kubernetes/kubectl/blob/v0.20.2/pkg/cmd/completion/completion.go
zshHead = `
#compdef kpexec
__kubectl_bash_source() {
alias shopt=':'
emulate -L sh
setopt kshglob noshglob braceexpand
source "$@"
}
__kubectl_type() {
# -t is not supported by zsh
if [ "$1" == "-t" ]; then
shift
# fake Bash 4 to disable "complete -o nospace". Instead
# "compopt +-o nospace" is used in the code to toggle trailing
# spaces. We don't support that, but leave trailing spaces on
# all the time
if [ "$1" = "__kubectl_compopt" ]; then
echo builtin
return 0
fi
fi
type "$@"
}
__kubectl_compgen() {
local completions w
completions=( $(compgen "$@") ) || return $?
# filter by given word as prefix
while [[ "$1" = -* && "$1" != -- ]]; do
shift
shift
done
if [[ "$1" == -- ]]; then
shift
fi
for w in "${completions[@]}"; do
if [[ "${w}" = "$1"* ]]; then
echo "${w}"
fi
done
}
__kubectl_compopt() {
true # don't do anything. Not supported by bashcompinit in zsh
}
__kubectl_ltrim_colon_completions()
{
if [[ "$1" == *:* && "$COMP_WORDBREAKS" == *:* ]]; then
# Remove colon-word prefix from COMPREPLY items
local colon_word=${1%${1##*:}}
local i=${#COMPREPLY[*]}
while [[ $((--i)) -ge 0 ]]; do
COMPREPLY[$i]=${COMPREPLY[$i]#"$colon_word"}
done
fi
}
__kubectl_get_comp_words_by_ref() {
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[${COMP_CWORD}-1]}"
words=("${COMP_WORDS[@]}")
cword=("${COMP_CWORD[@]}")
}
__kubectl_filedir() {
# Don't need to do anything here.
# Otherwise we will get trailing space without "compopt -o nospace"
true
}
autoload -U +X bashcompinit && bashcompinit
# use word boundary patterns for BSD or GNU sed
LWORD='[[:<:]]'
RWORD='[[:>:]]'
if sed --version 2>&1 | grep -q GNU; then
LWORD='\<'
RWORD='\>'
fi
__kubectl_convert_bash_to_zsh() {
sed \
-e 's/declare -F/whence -w/' \
-e 's/_get_comp_words_by_ref "\$@"/_get_comp_words_by_ref "\$*"/' \
-e 's/local \([a-zA-Z0-9_]*\)=/local \1; \1=/' \
-e 's/flags+=("\(--.*\)=")/flags+=("\1"); two_word_flags+=("\1")/' \
-e 's/must_have_one_flag+=("\(--.*\)=")/must_have_one_flag+=("\1")/' \
-e "s/${LWORD}_filedir${RWORD}/__kubectl_filedir/g" \
-e "s/${LWORD}_get_comp_words_by_ref${RWORD}/__kubectl_get_comp_words_by_ref/g" \
-e "s/${LWORD}__ltrim_colon_completions${RWORD}/__kubectl_ltrim_colon_completions/g" \
-e "s/${LWORD}compgen${RWORD}/__kubectl_compgen/g" \
-e "s/${LWORD}compopt${RWORD}/__kubectl_compopt/g" \
-e "s/${LWORD}declare${RWORD}/builtin declare/g" \
-e "s/\\\$(type${RWORD}/\$(__kubectl_type/g" \
<<'BASH_COMPLETION_EOF'
`
zshTail = `
BASH_COMPLETION_EOF
}
__kubectl_bash_source <(__kubectl_convert_bash_to_zsh)
`
)
var (
bashCompletionFlags = map[string]string{
"namespace": "__kubectl_get_resource_namespace",
"container": "__kubectl_get_containers",
}
)