mirror of https://github.com/spf13/cobra.git
388 lines
9.7 KiB
Go
388 lines
9.7 KiB
Go
package cobra
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"os"
|
|
"sort"
|
|
"strings"
|
|
|
|
"github.com/spf13/pflag"
|
|
)
|
|
|
|
const (
|
|
BashCompFilenameExt = "cobra_annotation_bash_completion_filename_extentions"
|
|
BashCompOneRequiredFlag = "cobra_annotation_bash_completion_one_required_flag"
|
|
BashCompSubdirsInDir = "cobra_annotation_bash_completion_subdirs_in_dir"
|
|
)
|
|
|
|
func preamble(out *bytes.Buffer) {
|
|
fmt.Fprintf(out, `#!/bin/bash
|
|
|
|
|
|
__debug()
|
|
{
|
|
if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then
|
|
echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
|
|
fi
|
|
}
|
|
|
|
__index_of_word()
|
|
{
|
|
local w word=$1
|
|
shift
|
|
index=0
|
|
for w in "$@"; do
|
|
[[ $w = "$word" ]] && return
|
|
index=$((index+1))
|
|
done
|
|
index=-1
|
|
}
|
|
|
|
__contains_word()
|
|
{
|
|
local w word=$1; shift
|
|
for w in "$@"; do
|
|
[[ $w = "$word" ]] && return
|
|
done
|
|
return 1
|
|
}
|
|
|
|
__handle_reply()
|
|
{
|
|
__debug "${FUNCNAME}"
|
|
case $cur in
|
|
-*)
|
|
compopt -o nospace
|
|
local allflags
|
|
if [ ${#must_have_one_flag[@]} -ne 0 ]; then
|
|
allflags=("${must_have_one_flag[@]}")
|
|
else
|
|
allflags=("${flags[*]} ${two_word_flags[*]}")
|
|
fi
|
|
COMPREPLY=( $(compgen -W "${allflags[*]}" -- "$cur") )
|
|
[[ $COMPREPLY == *= ]] || compopt +o nospace
|
|
return 0;
|
|
;;
|
|
esac
|
|
|
|
# check if we are handling a flag with special work handling
|
|
local index
|
|
__index_of_word "${prev}" "${flags_with_completion[@]}"
|
|
if [[ ${index} -ge 0 ]]; then
|
|
${flags_completion[${index}]}
|
|
return
|
|
fi
|
|
|
|
# we are parsing a flag and don't have a special handler, no completion
|
|
if [[ ${cur} != "${words[cword]}" ]]; then
|
|
return
|
|
fi
|
|
|
|
local completions
|
|
if [[ ${#must_have_one_flag[@]} -ne 0 ]]; then
|
|
completions=("${must_have_one_flag[@]}")
|
|
elif [[ ${#must_have_one_noun[@]} -ne 0 ]]; then
|
|
completions=("${must_have_one_noun[@]}")
|
|
else
|
|
completions=("${commands[@]}")
|
|
fi
|
|
COMPREPLY=( $(compgen -W "${completions[*]}" -- "$cur") )
|
|
|
|
if [[ ${#COMPREPLY[@]} -eq 0 ]]; then
|
|
declare -F __custom_func >/dev/null && __custom_func
|
|
fi
|
|
}
|
|
|
|
# The arguments should be in the form "ext1|ext2|extn"
|
|
__handle_filename_extension_flag()
|
|
{
|
|
local ext="$1"
|
|
_filedir "@(${ext})"
|
|
}
|
|
|
|
__handle_subdirs_in_dir_flag()
|
|
{
|
|
local dir="$1"
|
|
pushd "${dir}" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1
|
|
}
|
|
|
|
__handle_flag()
|
|
{
|
|
__debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
|
|
|
|
# if a command required a flag, and we found it, unset must_have_one_flag()
|
|
local flagname=${words[c]}
|
|
# if the word contained an =
|
|
if [[ ${words[c]} == *"="* ]]; then
|
|
flagname=${flagname%%=*} # strip everything after the =
|
|
flagname="${flagname}=" # but put the = back
|
|
fi
|
|
__debug "${FUNCNAME}: looking for ${flagname}"
|
|
if __contains_word "${flagname}" "${must_have_one_flag[@]}"; then
|
|
must_have_one_flag=()
|
|
fi
|
|
|
|
# skip the argument to a two word flag
|
|
if __contains_word "${words[c]}" "${two_word_flags[@]}"; then
|
|
c=$((c+1))
|
|
# if we are looking for a flags value, don't show commands
|
|
if [[ $c -eq $cword ]]; then
|
|
commands=()
|
|
fi
|
|
fi
|
|
|
|
# skip the flag itself
|
|
c=$((c+1))
|
|
|
|
}
|
|
|
|
__handle_noun()
|
|
{
|
|
__debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
|
|
|
|
if __contains_word "${words[c]}" "${must_have_one_noun[@]}"; then
|
|
must_have_one_noun=()
|
|
fi
|
|
|
|
nouns+=("${words[c]}")
|
|
c=$((c+1))
|
|
}
|
|
|
|
__handle_command()
|
|
{
|
|
__debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
|
|
|
|
local next_command
|
|
if [[ -n ${last_command} ]]; then
|
|
next_command="_${last_command}_${words[c]}"
|
|
else
|
|
next_command="_${words[c]}"
|
|
fi
|
|
c=$((c+1))
|
|
__debug "${FUNCNAME}: looking for ${next_command}"
|
|
declare -F $next_command >/dev/null && $next_command
|
|
}
|
|
|
|
__handle_word()
|
|
{
|
|
if [[ $c -ge $cword ]]; then
|
|
__handle_reply
|
|
return
|
|
fi
|
|
__debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
|
|
if [[ "${words[c]}" == -* ]]; then
|
|
__handle_flag
|
|
elif __contains_word "${words[c]}" "${commands[@]}"; then
|
|
__handle_command
|
|
else
|
|
__handle_noun
|
|
fi
|
|
__handle_word
|
|
}
|
|
|
|
`)
|
|
}
|
|
|
|
func postscript(out *bytes.Buffer, name string) {
|
|
fmt.Fprintf(out, "__start_%s()\n", name)
|
|
fmt.Fprintf(out, `{
|
|
local cur prev words cword
|
|
_init_completion -s || return
|
|
|
|
local c=0
|
|
local flags=()
|
|
local two_word_flags=()
|
|
local flags_with_completion=()
|
|
local flags_completion=()
|
|
local commands=("%s")
|
|
local must_have_one_flag=()
|
|
local must_have_one_noun=()
|
|
local last_command
|
|
local nouns=()
|
|
|
|
__handle_word
|
|
}
|
|
|
|
`, name)
|
|
fmt.Fprintf(out, "complete -F __start_%s %s\n", name, name)
|
|
fmt.Fprintf(out, "# ex: ts=4 sw=4 et filetype=sh\n")
|
|
}
|
|
|
|
func writeCommands(cmd *Command, out *bytes.Buffer) {
|
|
fmt.Fprintf(out, " commands=()\n")
|
|
for _, c := range cmd.Commands() {
|
|
if len(c.Deprecated) > 0 || c == cmd.helpCommand {
|
|
continue
|
|
}
|
|
fmt.Fprintf(out, " commands+=(%q)\n", c.Name())
|
|
}
|
|
fmt.Fprintf(out, "\n")
|
|
}
|
|
|
|
func writeFlagHandler(name string, annotations map[string][]string, out *bytes.Buffer) {
|
|
for key, value := range annotations {
|
|
switch key {
|
|
case BashCompFilenameExt:
|
|
fmt.Fprintf(out, " flags_with_completion+=(%q)\n", name)
|
|
|
|
if len(value) > 0 {
|
|
ext := "__handle_filename_extension_flag " + strings.Join(value, "|")
|
|
fmt.Fprintf(out, " flags_completion+=(%q)\n", ext)
|
|
} else {
|
|
ext := "_filedir"
|
|
fmt.Fprintf(out, " flags_completion+=(%q)\n", ext)
|
|
}
|
|
case BashCompSubdirsInDir:
|
|
fmt.Fprintf(out, " flags_with_completion+=(%q)\n", name)
|
|
|
|
if len(value) == 1 {
|
|
ext := "__handle_subdirs_in_dir_flag " + value[0]
|
|
fmt.Fprintf(out, " flags_completion+=(%q)\n", ext)
|
|
} else {
|
|
ext := "_filedir -d"
|
|
fmt.Fprintf(out, " flags_completion+=(%q)\n", ext)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func writeShortFlag(flag *pflag.Flag, out *bytes.Buffer) {
|
|
b := (flag.Value.Type() == "bool")
|
|
name := flag.Shorthand
|
|
format := " "
|
|
if !b {
|
|
format += "two_word_"
|
|
}
|
|
format += "flags+=(\"-%s\")\n"
|
|
fmt.Fprintf(out, format, name)
|
|
writeFlagHandler("-"+name, flag.Annotations, out)
|
|
}
|
|
|
|
func writeFlag(flag *pflag.Flag, out *bytes.Buffer) {
|
|
b := (flag.Value.Type() == "bool")
|
|
name := flag.Name
|
|
format := " flags+=(\"--%s"
|
|
if !b {
|
|
format += "="
|
|
}
|
|
format += "\")\n"
|
|
fmt.Fprintf(out, format, name)
|
|
writeFlagHandler("--"+name, flag.Annotations, out)
|
|
}
|
|
|
|
func writeFlags(cmd *Command, out *bytes.Buffer) {
|
|
fmt.Fprintf(out, ` flags=()
|
|
two_word_flags=()
|
|
flags_with_completion=()
|
|
flags_completion=()
|
|
|
|
`)
|
|
cmd.NonInheritedFlags().VisitAll(func(flag *pflag.Flag) {
|
|
writeFlag(flag, out)
|
|
if len(flag.Shorthand) > 0 {
|
|
writeShortFlag(flag, out)
|
|
}
|
|
})
|
|
|
|
fmt.Fprintf(out, "\n")
|
|
}
|
|
|
|
func writeRequiredFlag(cmd *Command, out *bytes.Buffer) {
|
|
fmt.Fprintf(out, " must_have_one_flag=()\n")
|
|
flags := cmd.NonInheritedFlags()
|
|
flags.VisitAll(func(flag *pflag.Flag) {
|
|
for key, _ := range flag.Annotations {
|
|
switch key {
|
|
case BashCompOneRequiredFlag:
|
|
format := " must_have_one_flag+=(\"--%s"
|
|
b := (flag.Value.Type() == "bool")
|
|
if !b {
|
|
format += "="
|
|
}
|
|
format += "\")\n"
|
|
fmt.Fprintf(out, format, flag.Name)
|
|
|
|
if len(flag.Shorthand) > 0 {
|
|
fmt.Fprintf(out, " must_have_one_flag+=(\"-%s\")\n", flag.Shorthand)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
func writeRequiredNoun(cmd *Command, out *bytes.Buffer) {
|
|
fmt.Fprintf(out, " must_have_one_noun=()\n")
|
|
sort.Sort(sort.StringSlice(cmd.ValidArgs))
|
|
for _, value := range cmd.ValidArgs {
|
|
fmt.Fprintf(out, " must_have_one_noun+=(%q)\n", value)
|
|
}
|
|
}
|
|
|
|
func gen(cmd *Command, out *bytes.Buffer) {
|
|
for _, c := range cmd.Commands() {
|
|
if len(c.Deprecated) > 0 || c == cmd.helpCommand {
|
|
continue
|
|
}
|
|
gen(c, out)
|
|
}
|
|
commandName := cmd.CommandPath()
|
|
commandName = strings.Replace(commandName, " ", "_", -1)
|
|
fmt.Fprintf(out, "_%s()\n{\n", commandName)
|
|
fmt.Fprintf(out, " last_command=%q\n", commandName)
|
|
writeCommands(cmd, out)
|
|
writeFlags(cmd, out)
|
|
writeRequiredFlag(cmd, out)
|
|
writeRequiredNoun(cmd, out)
|
|
fmt.Fprintf(out, "}\n\n")
|
|
}
|
|
|
|
func (cmd *Command) GenBashCompletion(out *bytes.Buffer) {
|
|
preamble(out)
|
|
if len(cmd.BashCompletionFunction) > 0 {
|
|
fmt.Fprintf(out, "%s\n", cmd.BashCompletionFunction)
|
|
}
|
|
gen(cmd, out)
|
|
postscript(out, cmd.Name())
|
|
}
|
|
|
|
func (cmd *Command) GenBashCompletionFile(filename string) error {
|
|
out := new(bytes.Buffer)
|
|
|
|
cmd.GenBashCompletion(out)
|
|
|
|
outFile, err := os.Create(filename)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer outFile.Close()
|
|
|
|
_, err = outFile.Write(out.Bytes())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag, if it exists.
|
|
func (cmd *Command) MarkFlagRequired(name string) error {
|
|
return MarkFlagRequired(cmd.Flags(), name)
|
|
}
|
|
|
|
// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag in the flag set, if it exists.
|
|
func MarkFlagRequired(flags *pflag.FlagSet, name string) error {
|
|
return flags.SetAnnotation(name, BashCompOneRequiredFlag, []string{"true"})
|
|
}
|
|
|
|
// MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag, if it exists.
|
|
// Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided.
|
|
func (cmd *Command) MarkFlagFilename(name string, extensions ...string) error {
|
|
return MarkFlagFilename(cmd.Flags(), name, extensions...)
|
|
}
|
|
|
|
// MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag in the flag set, if it exists.
|
|
// Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided.
|
|
func MarkFlagFilename(flags *pflag.FlagSet, name string, extensions ...string) error {
|
|
return flags.SetAnnotation(name, BashCompFilenameExt, extensions)
|
|
}
|