# bash completion for shellcheck(1)                        -*- shell-script -*-

_shellcheck_optarg()
{
    local args=$("$1" --help 2>&1 |
        command sed -e 's/,/ /g' -ne 's/^.*'$2'\>.*(\([^)]*\)).*/\1/p')
    COMPREPLY+=($(compgen -W '$args' -- "$cur"))
}

_shellcheck()
{
    local cur prev words cword split
    _init_completion -s || return

    case $prev in
        --version | -!(-*)V*)
            return
            ;;
        --exclude | --include | -!(-*)[ei])
            return
            ;;
        --format | -!(-*)f)
            local args=$("$1" --format=nonexistent-format /dev/null 2>&1 |
                command sed -ne '/^Supported formats/,//p' |
                command sed -ne '/^[[:space:]]/p')
            COMPREPLY=($(compgen -W '$args' -- "$cur"))
            return
            ;;
        --color | -!(-*)C)
            _shellcheck_optarg "$1" --color
            return
            ;;
        --shell | -!(-*)s)
            _shellcheck_optarg "$1" --shell
            return
            ;;
        --enable | -!(-*)o)
            COMPREPLY=($(compgen -W 'all' -- "$cur")) # TODO others?
            return
            ;;
        --source-path | -!(-*)P)
            _filedir -d
            COMPREPLY+=($(compgen -W 'SCRIPTDIR' -- "$cur"))
            return
            ;;
        --wiki-link-count | -!(-*)W)
            return
            ;;
    esac

    $split && return

    if [[ $cur == -* ]]; then
        COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))
        [[ ${COMPREPLY-} == *= ]] && compopt -o nospace
        return
    fi

    _filedir
} &&
    complete -F _shellcheck shellcheck

# ex: filetype=sh
