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Adding support for app_vars in external file

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This commit is contained in:
Dave Smith 2010-12-20 08:55:31 -07:00
parent d8e50e8c2d
commit 9b0d35d986
1 changed files with 23 additions and 5 deletions
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28
src/rebar_otp_app.erl
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@ -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