/
gen_completion.go
202 lines (191 loc) 路 5.24 KB
/
gen_completion.go
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// Copyright 2016-2018, Pulumi Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bytes"
"fmt"
"io"
"os"
"github.com/spf13/cobra"
"github.com/pulumi/pulumi/sdk/v3/go/common/util/cmdutil"
)
// newGenCompletionCmd returns a new command that, when run, generates a bash or zsh completion script for the CLI.
func newGenCompletionCmd(root *cobra.Command) *cobra.Command {
return &cobra.Command{
Use: "gen-completion <SHELL>",
Aliases: []string{"completion"},
Args: cmdutil.ExactArgs(1),
Short: "Generate completion scripts for the Pulumi CLI",
Run: cmdutil.RunFunc(func(cmd *cobra.Command, args []string) error {
switch {
case args[0] == "bash":
return root.GenBashCompletion(os.Stdout)
case args[0] == "zsh":
return genZshCompletion(os.Stdout, root)
case args[0] == "fish":
return root.GenFishCompletion(os.Stdout, true)
default:
return fmt.Errorf("%q is not a supported shell", args[0])
}
}),
}
}
const (
// Inspired by https://github.com/kubernetes/kubernetes/blob/master/pkg/kubectl/cmd/completion.go
zshHead = `#compdef pulumi
__pulumi_bash_source() {
alias shopt=':'
alias _expand=_bash_expand
alias _complete=_bash_comp
emulate -L sh
setopt kshglob noshglob braceexpand
source "$@"
}
__pulumi_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 [ "$1" = "__pulumi_compopt" ]; then
echo builtin
return 0
fi
fi
type "$@"
}
__pulumi_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
}
__pulumi_compopt() {
true # don't do anything. Not supported by bashcompinit in zsh
}
__pulumi_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]#"$colon_word"}
done
fi
}
__pulumi_get_comp_words_by_ref() {
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[${COMP_CWORD}-1]}"
words=("${COMP_WORDS[@]}")
cword=("${COMP_CWORD[@]}")
}
__pulumi_filedir() {
local RET OLD_IFS w qw
__debug "_filedir $@ cur=$cur"
if [[ "$1" = \~* ]]; then
# somehow does not work. Maybe, zsh does not call this at all
eval echo "$1"
return 0
fi
OLD_IFS="$IFS"
IFS=$'\n'
if [ "$1" = "-d" ]; then
shift
RET=( $(compgen -d) )
else
RET=( $(compgen -f) )
fi
IFS="$OLD_IFS"
IFS="," __debug "RET=${RET[@]} len=${#RET[@]}"
for w in ${RET[@]}; do
if [[ ! "${w}" = "${cur}"* ]]; then
continue
fi
if eval "[[ \"\${w}\" = *.$1 || -d \"\${w}\" ]]"; then
qw="$(__pulumi_quote "${w}")"
if [ -d "${w}" ]; then
COMPREPLY+=("${qw}/")
else
COMPREPLY+=("${qw}")
fi
fi
done
}
__pulumi_quote() {
if [[ $1 == \'* || $1 == \"* ]]; then
# Leave out first character
printf %q "${1:1}"
else
printf %q "$1"
fi
}
autoload -U +X bashcompinit && bashcompinit
# use word boundary patterns for BSD or GNU sed
LWORD='[[:<:]]'
RWORD='[[:>:]]'
if sed --help 2>&1 | grep -q GNU; then
LWORD='\<'
RWORD='\>'
fi
__pulumi_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}/__pulumi_filedir/g" \
-e "s/${LWORD}_get_comp_words_by_ref${RWORD}/__pulumi_get_comp_words_by_ref/g" \
-e "s/${LWORD}__ltrim_colon_completions${RWORD}/__pulumi_ltrim_colon_completions/g" \
-e "s/${LWORD}compgen${RWORD}/__pulumi_compgen/g" \
-e "s/${LWORD}compopt${RWORD}/__pulumi_compopt/g" \
-e "s/${LWORD}declare${RWORD}/builtin declare/g" \
-e "s/\\\$(type${RWORD}/\$(__pulumi_type/g" \
<<'BASH_COMPLETION_EOF'
`
zshTail = `
BASH_COMPLETION_EOF
}
__pulumi_bash_source <(__pulumi_convert_bash_to_zsh)
_complete pulumi 2>/dev/null
`
)
func genZshCompletion(out io.Writer, root *cobra.Command) error {
buf := new(bytes.Buffer)
if err := root.GenBashCompletion(buf); err != nil {
return err
}
if _, err := fmt.Fprintf(out, "%s", zshHead); err != nil { //nolint
return err
}
if _, err := fmt.Fprint(out, buf.String()); err != nil {
return err
}
_, err := fmt.Fprint(out, zshTail)
return err
}