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support completions for command aliases (#669)

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* support completions for command aliases

* try newer version of shellcheck

* initialize aliashash only when BASH_VERSION > 3
This commit is contained in:
Rajat Jindal 2018-04-23 05:47:20 -07:00 committed by Eric Paris
parent 615425954c
commit 7ee208b09f
2 changed files with 30 additions and 1 deletions
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2
.circleci/config.yml
View file

@ -13,7 +13,7 @@ base: &base
name: "All Commands"
command: |
mkdir -p bin
curl -Lso bin/shellcheck https://github.com/caarlos0/shellcheck-docker/releases/download/v0.4.3/shellcheck
curl -Lso bin/shellcheck https://github.com/caarlos0/shellcheck-docker/releases/download/v0.4.6/shellcheck
chmod +x bin/shellcheck
go get -t -v ./...
PATH=$PATH:$PWD/bin go test -v ./...

29
bash_completions.go
View file

@ -251,6 +251,14 @@ __%[1]s_handle_word()
__%[1]s_handle_command
elif [[ $c -eq 0 ]]; then
__%[1]s_handle_command
elif __%[1]s_contains_word "${words[c]}" "${command_aliases[@]}"; then
# aliashash variable is an associative array which is only supported in bash > 3.
if [[ -z "${BASH_VERSION}" || "${BASH_VERSINFO[0]}" -gt 3 ]]; then
words[c]=${aliashash[${words[c]}]}
__%[1]s_handle_command
else
__%[1]s_handle_noun
fi
else
__%[1]s_handle_noun
fi
@ -266,6 +274,7 @@ func writePostscript(buf *bytes.Buffer, name string) {
buf.WriteString(fmt.Sprintf(`{
local cur prev words cword
declare -A flaghash 2>/dev/null || :
declare -A aliashash 2>/dev/null || :
if declare -F _init_completion >/dev/null 2>&1; then
_init_completion -s || return
else
@ -305,6 +314,7 @@ func writeCommands(buf *bytes.Buffer, cmd *Command) {
continue
}
buf.WriteString(fmt.Sprintf(" commands+=(%q)\n", c.Name()))
writeCmdAliases(buf, c)
}
buf.WriteString("\n")
}
@ -443,6 +453,21 @@ func writeRequiredNouns(buf *bytes.Buffer, cmd *Command) {
}
}
func writeCmdAliases(buf *bytes.Buffer, cmd *Command) {
if len(cmd.Aliases) == 0 {
return
}
sort.Sort(sort.StringSlice(cmd.Aliases))
buf.WriteString(fmt.Sprint(` if [[ -z "${BASH_VERSION}" || "${BASH_VERSINFO[0]}" -gt 3 ]]; then`, "\n"))
for _, value := range cmd.Aliases {
buf.WriteString(fmt.Sprintf(" command_aliases+=(%q)\n", value))
buf.WriteString(fmt.Sprintf(" aliashash[%q]=%q\n", value, cmd.Name()))
}
buf.WriteString(` fi`)
buf.WriteString("\n")
}
func writeArgAliases(buf *bytes.Buffer, cmd *Command) {
buf.WriteString(" noun_aliases=()\n")
sort.Sort(sort.StringSlice(cmd.ArgAliases))
@ -469,6 +494,10 @@ func gen(buf *bytes.Buffer, cmd *Command) {
}
buf.WriteString(fmt.Sprintf(" last_command=%q\n", commandName))
buf.WriteString("\n")
buf.WriteString(" command_aliases=()\n")
buf.WriteString("\n")
writeCommands(buf, cmd)
writeFlags(buf, cmd)
writeRequiredFlag(buf, cmd)