bash_tab_complete

# To use, in the Bash shell:
# source bash_tab_complete
#
# Then you can use the "tab" key to auto-complete options in the
# command line for dsub, dstat, or ddel.
#
#   dsub --pro<TAB>
#   dsub --project
#
# If you update dsub or related tools, you can source this file again
# to update the tab completion rules.


declare -A cmdline_options_for_dstar

cmdline_options_for_dstar[dstat]=""
cmdline_options_for_dstar[dsub]=""
cmdline_options_for_dstar[ddel]=""



_find_options_for()
{
    local tool="$1"
    2>&1 "$tool" | grep -oe '\-[a-zA-Z_\-]*' | sort | uniq | xargs
}

_go_with_options()
{
    local options="$@"
    local cur
    cur="${COMP_WORDS[COMP_CWORD]}"
    COMPREPLY=( $(compgen -W "${options}" -- ${cur}) )
    return 0
}

_magic_options_for()
{
    local tool="$1"
    local tool_path="$2"
    if [ -z "${cmdline_options_for_dstar[$tool]}" ]; then
        cmdline_options_for_dstar[$tool]="$(_find_options_for $tool_path)"
    fi
    _go_with_options "${cmdline_options_for_dstar[$tool]}"
}

_dsub()
{
    _magic_options_for "dsub" "$1"
}

_dstat()
{
    _magic_options_for "dstat" "$1"
}

_ddel()
{
    _magic_options_for "ddel" "$1"
}

complete -o default -F _dsub dsub
complete -o default -F _dstat dstat
complete -o default -F _ddel ddel