diff options
| -rw-r--r-- | src/rebar_otp_app.erl | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/src/rebar_otp_app.erl b/src/rebar_otp_app.erl index a8a4ecd..7cb70df 100644 --- a/src/rebar_otp_app.erl +++ b/src/rebar_otp_app.erl @@ -41,7 +41,7 @@ compile(Config, File) -> %% be validated as usual. AppFile = case rebar_app_utils:is_app_src(File) of true -> - preprocess(File); + preprocess(Config, File); false -> File end, @@ -86,12 +86,14 @@ clean(_Config, File) -> %% Internal functions %% =================================================================== -preprocess(AppSrcFile) -> +preprocess(Config, AppSrcFile) -> case rebar_app_utils:load_app_file(AppSrcFile) of {ok, AppName, AppData} -> - %% Get a list of all the modules available in ebin/ and update - %% the app data accordingly - A1 = lists:keystore(modules, 1, AppData, {modules, ebin_modules()}), + %% Look for a configuration file with vars we want to + %% substitute. Note that we include the list of modules available in + %% ebin/ and update the app data accordingly. + AppVars = load_app_vars(Config) ++ [{modules, ebin_modules()}], + A1 = apply_app_vars(AppVars, AppData), %% Build the final spec as a string Spec = io_lib:format("~p.\n", [{application, AppName, A1}]), @@ -109,6 +111,22 @@ preprocess(AppSrcFile) -> ?ABORT("Failed to read ~s for preprocessing: ~p\n", [AppSrcFile, Reason]) end. +load_app_vars(Config) -> + case rebar_config:get_local(Config, app_vars_file, undefined) of + undefined -> + ?INFO("No app_vars_file defined.\n", []), + []; + Filename -> + ?INFO("Loading app vars from ~p\n", [Filename]), + {ok, Vars} = file:consult(Filename), + Vars + end. + +apply_app_vars([], AppData) -> + AppData; +apply_app_vars([{Key, Value} | Rest], AppData) -> + AppData2 = lists:keystore(Key, 1, AppData, {Key, Value}), + apply_app_vars(Rest, AppData2). validate_name(AppName, File) -> %% Convert the .app file name to an atom -- check it against the identifier within the file |