bump(6644d4): spf13/cobra: support bash completion for aliases

This commit is contained in:
Nikhita Raghunath
2018-03-02 21:21:07 +05:30
parent ae1fc13aee
commit bae2db8b95
6 changed files with 167 additions and 141 deletions

View File

@@ -21,8 +21,8 @@ const (
func writePreamble(buf *bytes.Buffer, name string) {
buf.WriteString(fmt.Sprintf("# bash completion for %-36s -*- shell-script -*-\n", name))
buf.WriteString(`
__debug()
buf.WriteString(fmt.Sprintf(`
__%[1]s_debug()
{
if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then
echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
@@ -31,13 +31,13 @@ __debug()
# Homebrew on Macs have version 1.3 of bash-completion which doesn't include
# _init_completion. This is a very minimal version of that function.
__my_init_completion()
__%[1]s_init_completion()
{
COMPREPLY=()
_get_comp_words_by_ref "$@" cur prev words cword
}
__index_of_word()
__%[1]s_index_of_word()
{
local w word=$1
shift
@@ -49,7 +49,7 @@ __index_of_word()
index=-1
}
__contains_word()
__%[1]s_contains_word()
{
local w word=$1; shift
for w in "$@"; do
@@ -58,9 +58,9 @@ __contains_word()
return 1
}
__handle_reply()
__%[1]s_handle_reply()
{
__debug "${FUNCNAME[0]}"
__%[1]s_debug "${FUNCNAME[0]}"
case $cur in
-*)
if [[ $(type -t compopt) = "builtin" ]]; then
@@ -85,7 +85,7 @@ __handle_reply()
local index flag
flag="${cur%%=*}"
__index_of_word "${flag}" "${flags_with_completion[@]}"
__%[1]s_index_of_word "${flag}" "${flags_with_completion[@]}"
COMPREPLY=()
if [[ ${index} -ge 0 ]]; then
PREFIX=""
@@ -103,7 +103,7 @@ __handle_reply()
# check if we are handling a flag with special work handling
local index
__index_of_word "${prev}" "${flags_with_completion[@]}"
__%[1]s_index_of_word "${prev}" "${flags_with_completion[@]}"
if [[ ${index} -ge 0 ]]; then
${flags_completion[${index}]}
return
@@ -136,24 +136,30 @@ __handle_reply()
if declare -F __ltrim_colon_completions >/dev/null; then
__ltrim_colon_completions "$cur"
fi
# If there is only 1 completion and it is a flag with an = it will be completed
# but we don't want a space after the =
if [[ "${#COMPREPLY[@]}" -eq "1" ]] && [[ $(type -t compopt) = "builtin" ]] && [[ "${COMPREPLY[0]}" == --*= ]]; then
compopt -o nospace
fi
}
# The arguments should be in the form "ext1|ext2|extn"
__handle_filename_extension_flag()
__%[1]s_handle_filename_extension_flag()
{
local ext="$1"
_filedir "@(${ext})"
}
__handle_subdirs_in_dir_flag()
__%[1]s_handle_subdirs_in_dir_flag()
{
local dir="$1"
pushd "${dir}" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1
}
__handle_flag()
__%[1]s_handle_flag()
{
__debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
__%[1]s_debug "${FUNCNAME[0]}: 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]}
@@ -164,13 +170,13 @@ __handle_flag()
flagname=${flagname%%=*} # strip everything after the =
flagname="${flagname}=" # but put the = back
fi
__debug "${FUNCNAME[0]}: looking for ${flagname}"
if __contains_word "${flagname}" "${must_have_one_flag[@]}"; then
__%[1]s_debug "${FUNCNAME[0]}: looking for ${flagname}"
if __%[1]s_contains_word "${flagname}" "${must_have_one_flag[@]}"; then
must_have_one_flag=()
fi
# if you set a flag which only applies to this command, don't show subcommands
if __contains_word "${flagname}" "${local_nonpersistent_flags[@]}"; then
if __%[1]s_contains_word "${flagname}" "${local_nonpersistent_flags[@]}"; then
commands=()
fi
@@ -187,7 +193,7 @@ __handle_flag()
fi
# skip the argument to a two word flag
if __contains_word "${words[c]}" "${two_word_flags[@]}"; then
if __%[1]s_contains_word "${words[c]}" "${two_word_flags[@]}"; then
c=$((c+1))
# if we are looking for a flags value, don't show commands
if [[ $c -eq $cword ]]; then
@@ -199,13 +205,13 @@ __handle_flag()
}
__handle_noun()
__%[1]s_handle_noun()
{
__debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
__%[1]s_debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
if __contains_word "${words[c]}" "${must_have_one_noun[@]}"; then
if __%[1]s_contains_word "${words[c]}" "${must_have_one_noun[@]}"; then
must_have_one_noun=()
elif __contains_word "${words[c]}" "${noun_aliases[@]}"; then
elif __%[1]s_contains_word "${words[c]}" "${noun_aliases[@]}"; then
must_have_one_noun=()
fi
@@ -213,45 +219,45 @@ __handle_noun()
c=$((c+1))
}
__handle_command()
__%[1]s_handle_command()
{
__debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
__%[1]s_debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
local next_command
if [[ -n ${last_command} ]]; then
next_command="_${last_command}_${words[c]//:/__}"
else
if [[ $c -eq 0 ]]; then
next_command="_$(basename "${words[c]//:/__}")"
next_command="_%[1]s_root_command"
else
next_command="_${words[c]//:/__}"
fi
fi
c=$((c+1))
__debug "${FUNCNAME[0]}: looking for ${next_command}"
__%[1]s_debug "${FUNCNAME[0]}: looking for ${next_command}"
declare -F "$next_command" >/dev/null && $next_command
}
__handle_word()
__%[1]s_handle_word()
{
if [[ $c -ge $cword ]]; then
__handle_reply
__%[1]s_handle_reply
return
fi
__debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
__%[1]s_debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
if [[ "${words[c]}" == -* ]]; then
__handle_flag
elif __contains_word "${words[c]}" "${commands[@]}"; then
__handle_command
elif [[ $c -eq 0 ]] && __contains_word "$(basename "${words[c]}")" "${commands[@]}"; then
__handle_command
__%[1]s_handle_flag
elif __%[1]s_contains_word "${words[c]}" "${commands[@]}"; then
__%[1]s_handle_command
elif [[ $c -eq 0 ]]; then
__%[1]s_handle_command
else
__handle_noun
__%[1]s_handle_noun
fi
__handle_word
__%[1]s_handle_word
}
`)
`, name))
}
func writePostscript(buf *bytes.Buffer, name string) {
@@ -263,7 +269,7 @@ func writePostscript(buf *bytes.Buffer, name string) {
if declare -F _init_completion >/dev/null 2>&1; then
_init_completion -s || return
else
__my_init_completion -n "=" || return
__%[1]s_init_completion -n "=" || return
fi
local c=0
@@ -272,13 +278,13 @@ func writePostscript(buf *bytes.Buffer, name string) {
local local_nonpersistent_flags=()
local flags_with_completion=()
local flags_completion=()
local commands=("%s")
local commands=("%[1]s")
local must_have_one_flag=()
local must_have_one_noun=()
local last_command
local nouns=()
__handle_word
__%[1]s_handle_word
}
`, name))
@@ -303,7 +309,7 @@ func writeCommands(buf *bytes.Buffer, cmd *Command) {
buf.WriteString("\n")
}
func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]string) {
func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]string, cmd *Command) {
for key, value := range annotations {
switch key {
case BashCompFilenameExt:
@@ -311,7 +317,7 @@ func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]s
var ext string
if len(value) > 0 {
ext = "__handle_filename_extension_flag " + strings.Join(value, "|")
ext = fmt.Sprintf("__%s_handle_filename_extension_flag ", cmd.Root().Name()) + strings.Join(value, "|")
} else {
ext = "_filedir"
}
@@ -329,7 +335,7 @@ func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]s
var ext string
if len(value) == 1 {
ext = "__handle_subdirs_in_dir_flag " + value[0]
ext = fmt.Sprintf("__%s_handle_subdirs_in_dir_flag ", cmd.Root().Name()) + value[0]
} else {
ext = "_filedir -d"
}
@@ -338,7 +344,7 @@ func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]s
}
}
func writeShortFlag(buf *bytes.Buffer, flag *pflag.Flag) {
func writeShortFlag(buf *bytes.Buffer, flag *pflag.Flag, cmd *Command) {
name := flag.Shorthand
format := " "
if len(flag.NoOptDefVal) == 0 {
@@ -346,10 +352,10 @@ func writeShortFlag(buf *bytes.Buffer, flag *pflag.Flag) {
}
format += "flags+=(\"-%s\")\n"
buf.WriteString(fmt.Sprintf(format, name))
writeFlagHandler(buf, "-"+name, flag.Annotations)
writeFlagHandler(buf, "-"+name, flag.Annotations, cmd)
}
func writeFlag(buf *bytes.Buffer, flag *pflag.Flag) {
func writeFlag(buf *bytes.Buffer, flag *pflag.Flag, cmd *Command) {
name := flag.Name
format := " flags+=(\"--%s"
if len(flag.NoOptDefVal) == 0 {
@@ -357,7 +363,7 @@ func writeFlag(buf *bytes.Buffer, flag *pflag.Flag) {
}
format += "\")\n"
buf.WriteString(fmt.Sprintf(format, name))
writeFlagHandler(buf, "--"+name, flag.Annotations)
writeFlagHandler(buf, "--"+name, flag.Annotations, cmd)
}
func writeLocalNonPersistentFlag(buf *bytes.Buffer, flag *pflag.Flag) {
@@ -383,9 +389,9 @@ func writeFlags(buf *bytes.Buffer, cmd *Command) {
if nonCompletableFlag(flag) {
return
}
writeFlag(buf, flag)
writeFlag(buf, flag, cmd)
if len(flag.Shorthand) > 0 {
writeShortFlag(buf, flag)
writeShortFlag(buf, flag, cmd)
}
if localNonPersistentFlags.Lookup(flag.Name) != nil {
writeLocalNonPersistentFlag(buf, flag)
@@ -395,9 +401,9 @@ func writeFlags(buf *bytes.Buffer, cmd *Command) {
if nonCompletableFlag(flag) {
return
}
writeFlag(buf, flag)
writeFlag(buf, flag, cmd)
if len(flag.Shorthand) > 0 {
writeShortFlag(buf, flag)
writeShortFlag(buf, flag, cmd)
}
})
@@ -455,7 +461,13 @@ func gen(buf *bytes.Buffer, cmd *Command) {
commandName := cmd.CommandPath()
commandName = strings.Replace(commandName, " ", "_", -1)
commandName = strings.Replace(commandName, ":", "__", -1)
buf.WriteString(fmt.Sprintf("_%s()\n{\n", commandName))
if cmd.Root() == cmd {
buf.WriteString(fmt.Sprintf("_%s_root_command()\n{\n", commandName))
} else {
buf.WriteString(fmt.Sprintf("_%s()\n{\n", commandName))
}
buf.WriteString(fmt.Sprintf(" last_command=%q\n", commandName))
writeCommands(buf, cmd)
writeFlags(buf, cmd)

View File

@@ -204,3 +204,17 @@ __kubectl_get_namespaces()
fi
}
```
# Using bash aliases for commands
You can also configure the `bash aliases` for the commands and they will also support completions.
```bash
alias aliasname=origcommand
complete -o default -F __start_origcommand aliasname
# and now when you run `aliasname` completion will make
# suggestions as it did for `origcommand`.
$) aliasname <tab><tab>
completion firstcommand secondcommand
```