diff options
Diffstat (limited to 'src/rcl_prv_config.erl')
| -rw-r--r-- | src/rcl_prv_config.erl | 72 |
1 files changed, 66 insertions, 6 deletions
diff --git a/src/rcl_prv_config.erl b/src/rcl_prv_config.erl index ee1c770..60655b1 100644 --- a/src/rcl_prv_config.erl +++ b/src/rcl_prv_config.erl @@ -1,3 +1,19 @@ +%% -*- erlang-indent-level: 4; indent-tabs-mode: nil; fill-column: 80 -*- +%%% Copyright 2012 Erlware, LLC. All Rights Reserved. +%%% +%%% This file is provided to you under the Apache License, +%%% Version 2.0 (the "License"); you may not use this file +%%% except in compliance with the License. You may obtain +%%% a copy of the License at +%%% +%%% http://www.apache.org/licenses/LICENSE-2.0 +%%% +%%% Unless required by applicable law or agreed to in writing, +%%% software distributed under the License is distributed on an +%%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +%%% KIND, either express or implied. See the License for the +%%% specific language governing permissions and limitations +%%% under the License. %%%------------------------------------------------------------------- %%% @author Eric Merritt <[email protected]> %%% @copyright 2011 Erlware, LLC. @@ -29,8 +45,12 @@ 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_file(State) of + undefined -> + search_for_dominating_config(State); + ConfigFile when erlang:is_list(ConfigFile) -> + load_config(ConfigFile, State) + end. -spec format_error(Reason::term()) -> iolist(). format_error({consult, ConfigFile, Reason}) -> @@ -42,11 +62,51 @@ format_error({invalid_term, Term}) -> %%%=================================================================== %%% Internal Functions %%%=================================================================== --spec load_config(file:filename(), {ok, rcl_state:t()} | relcool:error()) -> +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, rcl_state:config_file(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(), rcl_state:t()) -> {ok, rcl_state:t()} | relcool:error(). -load_config(_, Err = {error, _}) -> - Err; -load_config(ConfigFile, {ok, State}) -> +load_config(ConfigFile, State) -> {ok, CurrentCwd} = file:get_cwd(), ok = file:set_cwd(filename:dirname(ConfigFile)), Result = case file:consult(ConfigFile) of |