#!/bin/bash

: ${PROG:=$(basename ${BASH_SOURCE})}

# Macs have bash3 for which the bash-completion package doesn't include
# _init_completion. This is a minimal version of that function.
_cli_init_completion() {
    COMPREPLY=()
    _get_comp_words_by_ref "$@" cur prev words cword
}

_cli_bash_autocomplete() {
    if [[ "${COMP_WORDS[0]}" != "source" ]]; then
        local cur opts base words
        COMPREPLY=()
        cur="${COMP_WORDS[COMP_CWORD]}"
        if declare -F _init_completion >/dev/null 2>&1; then
            _init_completion -n "=:" || return
        else
            _cli_init_completion -n "=:" || return
        fi
        words=("${words[@]:0:$cword}")
        if [[ "$cur" == "-"* ]]; then
            requestComp="${words[*]} ${cur} --generate-bash-completion"
        else
            requestComp="${words[*]} --generate-bash-completion"
        fi
        opts=$(eval "${requestComp}" 2>/dev/null)
        COMPREPLY=($(compgen -W "${opts}" -- ${cur}))
        return 0
    fi
}

complete -o bashdefault -o default -o nospace -F _cli_bash_autocomplete $PROG
unset PROG
