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Fix generated bash completion for Bash 3 (OSX) (#520)

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* Make preamble functions unique to command

Prior to this commit the functions in the preamble had names that didn't
vary based on the command for which the bash completion was generated.

This meant that if you had two bash completions with differences in the
preamble functions then only the last loaded function would be
available.

This commit prefixes all of these functions with the name of the command
so that multiple cobra generated completion files won't clash.

Signed-off-by: John McCabe <john@johnmccabe.net>

* Fix function names in writeFlagHandler

The references to the `__handle_filename_extension_flag` and
`__handle_subdirs_in_dir_flag` functions in `writeFlagHandler` hadn't
been updated correctly in the previous commits.

Signed-off-by: John McCabe <john@johnmccabe.net>

* Pass cmd into writeFlagHandler

This commit passes the cmd pointer into the writeFlagHandler so that the
`__handle_filename_extension_flag` and `__handle_subdirs_in_dir_flag`
functions can have the `cmd.Name()` prefixed.

* Update Bash completion tests

Prefixes the tested `__handle_filename_extension_flag` and
`__handle_subdirs_in_dir_flag` functions with the command name.
This commit is contained in:
John McCabe 2018-02-08 21:34:46 +00:00 committed by Eric Paris
parent 93959269ad
commit fd32f09af1
2 changed files with 52 additions and 51 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

98
bash_completions.go
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
@ -139,21 +139,21 @@ __handle_reply()
}
# 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 +164,13 @@ __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}" "${local_nonpersistent_flags[@]}"; then
commands=()
fi
@ -187,7 +187,7 @@ __handle_flag()
fi
# skip the argument to a two word flag
if __contains_word "${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 $cword ]]; then
@ -199,13 +199,13 @@ __handle_flag()
}
__handle_noun()
__%[1]s_handle_noun()
{
__debug "${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]}" "${noun_aliases[@]}"; then
must_have_one_noun=()
fi
@ -213,9 +213,9 @@ __handle_noun()
c=$((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 ${last_command} ]]; then
@ -228,30 +228,30 @@ __handle_command()
fi
fi
c=$((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 [[ $c -eq 0 ]] && __%[1]s_contains_word "$(basename "${words[c]}")" "${commands[@]}"; 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 +263,7 @@ 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 +272,13 @@ 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 +303,7 @@ 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 +311,7 @@ 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.Name()) + strings.Join(value, "|")
} else {
ext = "_filedir"
}
@ -329,7 +329,7 @@ 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.Name()) + value[0]
} else {
ext = "_filedir -d"
}
@ -338,7 +338,7 @@ 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 +346,10 @@ 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 +357,7 @@ 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 +383,9 @@ 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 +395,9 @@ 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)
}
})

5
bash_completions_test.go
View file

@ -2,6 +2,7 @@ package cobra
import (
"bytes"
"fmt"
"os"
"os/exec"
"strings"
@ -146,11 +147,11 @@ func TestBashCompletions(t *testing.T) {
// check for filename extension flags
check(t, output, `must_have_one_noun+=("three")`)
// check for filename extension flags
check(t, output, `flags_completion+=("__handle_filename_extension_flag json|yaml|yml")`)
check(t, output, fmt.Sprintf(`flags_completion+=("__%s_handle_filename_extension_flag json|yaml|yml")`, rootCmd.Name()))
// check for custom flags
check(t, output, `flags_completion+=("__complete_custom")`)
// check for subdirs_in_dir flags
check(t, output, `flags_completion+=("__handle_subdirs_in_dir_flag themes")`)
check(t, output, fmt.Sprintf(`flags_completion+=("__%s_handle_subdirs_in_dir_flag themes")`, rootCmd.Name()))
checkOmit(t, output, deprecatedCmd.Name())