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Refactor of rebar_config to facilitate identification of "local" config settings

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This commit is contained in:
Dave Smith 2009-12-31 19:28:20 -07:00
parent 8c85021c1e
commit bd090f0db2
1 changed files with 30 additions and 11 deletions
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41
src/rebar_config.erl
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@ -25,8 +25,9 @@
-module(rebar_config).
-export([new/0, new/1,
get/3, get_list/3,
delete/2,
get/3, get_local/3, get_list/3,
get_all/2,
set/3,
set_global/2, get_global/2,
is_verbose/0]).
@ -50,24 +51,35 @@ new(ParentConfig) ->
ConfigFile = filename:join([Dir, "rebar.config"]),
case file:consult(ConfigFile) of
{ok, Terms} ->
Opts = Terms ++ ParentConfig#config.opts;
%% Found a config file with some terms. We need to be able to
%% distinguish between local definitions (i.e. from the file
%% in the cwd) and inherited definitions. To accomplish this,
%% we use a marker in the proplist (since order matters) between
%% the new and old defs.
Opts = Terms ++ [local] ++ [Opt || Opt <- ParentConfig#config.opts, Opt /= local];
{error, enoent} ->
Opts = ParentConfig#config.opts;
Opts = [local] ++ [Opt || Opt <- ParentConfig#config.opts, Opt /= local];
Other ->
Opts = undefined, % Keep erlc happy
?WARN("Failed to load ~s: ~p\n", [ConfigFile, Other]),
?FAIL
?ABORT("Failed to load ~s: ~p\n", [ConfigFile, Other])
end,
#config { dir = Dir, opts = Opts }.
get_list(Config, Key, Default) ->
get(Config, Key, Default).
get(Config, Key, Default) ->
proplists:get_value(Key, Config#config.opts, Default).
delete(Config, Key) ->
Config#config { opts = proplists:delete(Key, Config#config.opts) }.
get_list(Config, Key, Default) ->
get(Config, Key, Default).
get_local(Config, Key, Default) ->
proplists:get_value(Key, local_opts(Config#config.opts, []), Default).
get_all(Config, Key) ->
proplists:get_all_values(Key, Config#config.opts).
set(Config, Key, Value) ->
Opts = proplists:delete(Key, Config#config.opts),
Config#config { opts = [{Key, Value} | Opts] }.
set_global(Key, Value) ->
application:set_env(rebar_global, Key, Value).
@ -92,3 +104,10 @@ is_verbose() ->
%% ===================================================================
%% Internal functions
%% ===================================================================
local_opts([], Acc) ->
lists:reverse(Acc);
local_opts([local | _Rest], Acc) ->
lists:reverse(Acc);
local_opts([Item | Rest], Acc) ->
local_opts(Rest, [Item | Acc]).