gproc/priv/check_edown.script

%% -*- erlang -*-
%%
%% This helper script checks if doc is being built, otherwise removes edoc dep.
%% To build docs, call `rebar get-deps doc`
%% Assumes that the rebar config is bound to CONFIG

[_|Args] = init:get_plain_arguments().  % rebar 'commands' and options
case lists:member("doc", Args) of
    false ->
	{ok,C1} = file:script(filename:join(filename:dirname(SCRIPT),
					    "remove_deps.script"),
			      [{'CONFIG', CONFIG}, {'DEPS', [edown]}]),
	C1;
    true ->
        case code:lib_dir(edown) of
            {error, bad_name} ->
                io:fwrite("cannot find edown~n", []),
                D = {edown, ".*",
                     {git, "git://github.com/esl/edown.git", "HEAD"}},
                Deps = case lists:keyfind(deps, 1, CONFIG) of
                           false -> [D];
                           {_, Ds} ->
                               case lists:keymember(edown, 1, Ds) of
                                   true -> Ds;
                                   false -> [D|Ds]
                               end
                       end,
                lists:keystore(deps, 1, CONFIG, {deps, Deps});
            _ ->
                io:fwrite("edown in path~n", []),
                CONFIG
        end
end.