Merge pull request #16 from ericbmerritt/next

default relcool.config support

5 files changed, 99 insertions, 23 deletions

diff --git a/src/rcl_cmd_args.erl b/src/rcl_cmd_args.erl
index 68bd9ce..d72bce3 100644
--- a/src/rcl_cmd_args.erl
+++ b/src/rcl_cmd_args.erl
@@ -75,9 +75,6 @@ format_error({invalid_config_file, Config}) ->
     io_lib:format("Invalid configuration file specified: ~s", [Config]);
 format_error({failed_to_parse, Spec}) ->
     io_lib:format("Unable to parse spec ~s", [Spec]);
-format_error({unable_to_create_output_dir, OutputDir}) ->
-    io_lib:format("Unable to create output directory (possible permissions issue): ~s",
-                  [OutputDir]);
 format_error({not_directory, Dir}) ->
     io_lib:format("Library directory does not exist: ~s", [Dir]);
 format_error({invalid_log_level, LogLevel}) ->
@@ -148,17 +145,7 @@ convert_goals([RawSpec | Rest], Acc) ->
                                {ok, rcl_state:cmd_args()} | relcool:error().
 create_output_dir(Opts, Acc) ->
     OutputDir = proplists:get_value(output_dir, Opts, "./_rel"),
-    case filelib:is_dir(OutputDir) of
-        false ->
-            case rcl_util:mkdir_p(OutputDir) of
-                ok ->
-                    create_lib_dirs(Opts, [{output_dir, OutputDir} | Acc]);
-                {error, _} ->
-                    ?RCL_ERROR({unable_to_create_output_dir, OutputDir})
-            end;
-        true ->
-            create_lib_dirs(Opts, [{output_dir, OutputDir} | Acc])
-    end.
+    create_lib_dirs(Opts, [{output_dir, OutputDir} | Acc]).
 
 -spec create_lib_dirs([getopt:option()], rcl_state:cmd_args()) ->
                                {ok, rcl_state:cmd_args()} | relcool:error().
diff --git a/src/rcl_prv_assembler.erl b/src/rcl_prv_assembler.erl
index c0f65c9..75a54ec 100644
--- a/src/rcl_prv_assembler.erl
+++ b/src/rcl_prv_assembler.erl
@@ -44,11 +44,16 @@ do(State) ->
     {RelName, RelVsn} = rcl_state:default_release(State),
     Release = rcl_state:get_release(State, RelName, RelVsn),
     OutputDir = rcl_state:output_dir(State),
-    case rcl_release:realized(Release) of
-        true ->
-            copy_app_directories_to_output(State, Release, OutputDir);
-        false ->
-            ?RCL_ERROR({unresolved_release, RelName, RelVsn})
+    case create_output_dir(OutputDir) of
+        ok ->
+            case rcl_release:realized(Release) of
+                true ->
+                    copy_app_directories_to_output(State, Release, OutputDir);
+                false ->
+                    ?RCL_ERROR({unresolved_release, RelName, RelVsn})
+            end;
+        Error ->
+            Error
     end.
 
 -spec format_error(ErrorDetail::term()) -> iolist().
@@ -69,6 +74,9 @@ format_error({release_script_generation_error, RelFile}) ->
 format_error({release_script_generation_warning, Module, Warnings}) ->
     ["Warnings generating release \s",
      rcl_util:indent(1), Module:format_warning(Warnings)];
+format_error({unable_to_create_output_dir, OutputDir}) ->
+    io_lib:format("Unable to create output directory (possible permissions issue): ~s",
+                  [OutputDir]);
 format_error({release_script_generation_error, Module, Errors}) ->
     ["Errors generating release \n",
      rcl_util:indent(1), Module:format_error(Errors)].
@@ -76,6 +84,21 @@ format_error({release_script_generation_error, Module, Errors}) ->
 %%%===================================================================
 %%% Internal Functions
 %%%===================================================================
+-spec create_output_dir(file:name()) ->
+                               ok | {error, Reason::term()}.
+create_output_dir(OutputDir) ->
+    case filelib:is_dir(OutputDir) of
+        false ->
+            case rcl_util:mkdir_p(OutputDir) of
+                ok ->
+                    ok;
+                {error, _} ->
+                    ?RCL_ERROR({unable_to_create_output_dir, OutputDir})
+            end;
+        true ->
+            ok
+    end.
+
 copy_app_directories_to_output(State, Release, OutputDir) ->
     LibDir = filename:join([OutputDir, "lib"]),
     ok = ec_file:mkdir_p(LibDir),
diff --git a/src/rcl_prv_config.erl b/src/rcl_prv_config.erl
index ee1c770..7ea9a77 100644
--- a/src/rcl_prv_config.erl
+++ b/src/rcl_prv_config.erl
@@ -29,8 +29,12 @@ init(State) ->
 %% populating the state as a result.
 -spec do(rcl_state:t()) ->{ok,  rcl_state:t()} | relcool:error().
 do(State) ->
-    ConfigFiles = rcl_state:config_files(State),
-    lists:foldl(fun load_config/2, {ok, State}, ConfigFiles).
+    case  rcl_state:config_files(State) of
+        [] ->
+            search_for_dominating_config(State);
+        ConfigFiles ->
+            lists:foldl(fun load_config/2, {ok, State}, ConfigFiles)
+    end.
 
 -spec format_error(Reason::term()) -> iolist().
 format_error({consult, ConfigFile, Reason}) ->
@@ -42,6 +46,48 @@ format_error({invalid_term, Term}) ->
 %%%===================================================================
 %%% Internal Functions
 %%%===================================================================
+search_for_dominating_config({ok, Cwd}) ->
+    ConfigFile = filename:join(Cwd, "relcool.config"),
+    case ec_file:exists(ConfigFile) of
+        true ->
+            {ok, ConfigFile};
+        false ->
+            search_for_dominating_config(parent_dir(Cwd))
+    end;
+search_for_dominating_config({error, _}) ->
+    no_config;
+search_for_dominating_config(State0) ->
+    {ok, Cwd} = file:get_cwd(),
+    case search_for_dominating_config({ok, Cwd}) of
+        {ok, Config} ->
+            %% we need to set the root dir on state as well
+            {ok, RootDir} = parent_dir(Config),
+            State1 = rcl_state:root_dir(State0, RootDir),
+            load_config(Config, {ok, rcl_state:config_files(State1, [Config])});
+        no_config ->
+            {ok, State0}
+    end.
+
+%% @doc Given a directory returns the name of the parent directory.
+-spec parent_dir(Filename::string()) ->
+                        {ok, DirName::string()} | {error, no_parent_dir}.
+parent_dir(Filename) ->
+    parent_dir(filename:split(Filename), []).
+
+%% @doc Given list of directories, splits the list and returns all dirs but the
+%%  last as a path.
+-spec parent_dir([string()], [string()]) ->
+                        {ok, DirName::string()} | {error, no_parent_dir}.
+parent_dir([_H], []) ->
+    {error, no_parent_dir};
+parent_dir([], []) ->
+    {error, no_parent_dir};
+parent_dir([_H], Acc) ->
+    {ok, filename:join(lists:reverse(Acc))};
+parent_dir([H | T], Acc) ->
+    parent_dir(T, [H | Acc]).
+
+
 -spec load_config(file:filename(), {ok, rcl_state:t()} | relcool:error()) ->
                          {ok, rcl_state:t()} | relcool:error().
 load_config(_, Err = {error, _}) ->
diff --git a/src/rcl_state.erl b/src/rcl_state.erl
index 7397e6f..bd26a47 100644
--- a/src/rcl_state.erl
+++ b/src/rcl_state.erl
@@ -31,10 +31,13 @@
          overrides/2,
          goals/1,
          config_files/1,
+         config_files/2,
          providers/1,
          providers/2,
          sys_config/1,
          sys_config/2,
+         root_dir/1,
+         root_dir/2,
          add_release/2,
          get_release/3,
          update_release/2,
@@ -57,6 +60,7 @@
               cmd_args/0]).
 
 -record(state_t, {log :: rcl_log:t(),
+                  root_dir :: file:name(),
                   caller :: caller(),
                   output_dir :: file:name(),
                   lib_dirs=[] :: [file:name()],
@@ -90,9 +94,10 @@
 %% @doc Create a new 'log level' for the system
 -spec new(proplists:proplist(), [file:filename()] | file:filename()) -> t().
 new(PropList, Targets) when erlang:is_list(PropList) ->
+    {ok, Root} = file:get_cwd(),
     State0 =
         #state_t{log = proplists:get_value(log, PropList, rcl_log:new(error)),
-                 output_dir=filename:absname(proplists:get_value(output_dir, PropList, "")),
+                 output_dir=proplists:get_value(output_dir, PropList, ""),
                  lib_dirs=get_lib_dirs(proplists:get_value(lib_dirs, PropList, [])),
                  config_files=process_config_files(Targets),
                  goals=proplists:get_value(goals, PropList, []),
@@ -100,6 +105,7 @@ new(PropList, Targets) when erlang:is_list(PropList) ->
                  releases=ec_dictionary:new(ec_dict),
                  config_values=ec_dictionary:new(ec_dict),
                  overrides = proplists:get_value(overrides, PropList, []),
+                 root_dir = proplists:get_value(root_dir, PropList, Root),
                  default_release={proplists:get_value(relname, PropList, undefined),
                                   proplists:get_value(relvsn, PropList, undefined)}},
     create_logic_providers(State0).
@@ -135,6 +141,10 @@ goals(#state_t{goals=TS}) ->
 config_files(#state_t{config_files=ConfigFiles}) ->
     ConfigFiles.
 
+-spec config_files(t(), [file:filename()]) -> t().
+config_files(State, ConfigFiles) ->
+    State#state_t{config_files=ConfigFiles}.
+
 -spec providers(t()) -> [rcl_provider:t()].
 providers(#state_t{providers=Providers}) ->
     Providers.
@@ -147,6 +157,14 @@ sys_config(#state_t{sys_config=SysConfig}) ->
 sys_config(State, SysConfig) ->
     State#state_t{sys_config=SysConfig}.
 
+-spec root_dir(t()) -> file:filename() | undefined.
+root_dir(#state_t{root_dir=RootDir}) ->
+    RootDir.
+
+-spec root_dir(t(), file:filename()) -> t().
+root_dir(State, RootDir) ->
+    State#state_t{root_dir=RootDir}.
+
 -spec providers(t(), [rcl_provider:t()]) -> t().
 providers(M, NewProviders) ->
     M#state_t{providers=NewProviders}.
diff --git a/src/relcool.erl b/src/relcool.erl
index 0d75c62..c6747ca 100644
--- a/src/relcool.erl
+++ b/src/relcool.erl
@@ -93,7 +93,7 @@ opt_spec_list() ->
       "usually the OTP"},
      {output_dir, $o, "output-dir", string, "The output directory for the release. This is `./` by default."},
      {lib_dir, $l, "lib-dir", string, "Additional dirs that should be searched for OTP Apps"},
-     {log_level, $V, "verbose", {integer, 2}, "Verbosity level, maybe between 0 and 2"}
+     {log_level, $V, "verbose", {integer, 0}, "Verbosity level, maybe between 0 and 2"}
     ].
 
 -spec format_error(Reason::term()) -> iolist().
@@ -126,6 +126,8 @@ run_providers(State0) ->
         Err = {error, _} ->
             Err;
         {ok, State1} ->
+            RootDir = rcl_state:root_dir(State1),
+            ok = file:set_cwd(RootDir),
             Providers = rcl_state:providers(State1),
             Result = run_providers(ConfigProvider, Providers, State1),
             handle_output(State1, rcl_state:caller(State1), Result)