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|
-module(ephraim_config).
-behaviour(gen_server).
-export([start_link/0]).
-export([get/1]).
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
-spec start_link() -> {ok, pid()}.
start_link() ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
-spec init(term()) -> {ok, dict()}.
init(_Args) ->
process_flag(trap_exit, true),
{ok, Terms} = file:consult(config_path() ++ "/ephraim.cfg"),
Config = dict:from_list(lists:map(fun(Term) -> {element(1, Term), Term} end, Terms)),
{ok, Config}.
-spec config_path() -> string().
config_path() ->
Path = case os:getenv("XDG_CONFIG_HOME") of
false ->
os:getenv("HOME") ++ "/.config";
ConfigHome ->
ConfigHome
end ++ "/ephraim",
case file:read_file_info(Path) of
{ok, _} ->
ok;
{error, _} ->
file:make_dir(Path)
end,
Path.
-spec get(atom()) -> tuple() | error.
get(Key) ->
gen_server:call(?MODULE, {get, Key}).
-spec handle_call(term(), {pid(), term()}, dict()) -> {reply, tuple() | error, dict()}.
handle_call({get, Key}, _From, Config) ->
case dict:find(Key, Config) of
{ok, Value} ->
{reply, Value, Config};
error ->
{reply, error, Config}
end.
handle_cast(_Msg, Config) ->
{noreply, Config}.
handle_info(_Msg, Config) ->
{noreply, Config}.
terminate(_Reason, _Config) ->
ok.
code_change(_OldVersion, Config, _Extra) ->
{ok, Config}.
|
