| % Osmocom Erlang utility functions |
| |
| % (C) 2011 by Harald Welte <laforge@gnumonks.org> |
| % |
| % All Rights Reserved |
| % |
| % This program is free software; you can redistribute it and/or modify |
| % it under the terms of the GNU Affero General Public License as |
| % published by the Free Software Foundation; either version 3 of the |
| % License, or (at your option) any later version. |
| % |
| % This program is distributed in the hope that it will be useful, |
| % but WITHOUT ANY WARRANTY; without even the implied warranty of |
| % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| % GNU General Public License for more details. |
| % |
| % You should have received a copy of the GNU Affero General Public License |
| % along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| -module(osmo_util). |
| -author('Harald Welte <laforge@gnumonks.org>'). |
| |
| -export([digit_list2int/1, int2digit_list/1]). |
| -export([reload_config/0]). |
| -export([tuple_walk/3, tuple_walk_print_cb/3]). |
| |
| % Convert a list of digits to an integer value |
| digit_list2int(Int, []) -> |
| Int; |
| digit_list2int(Int, [Digit|Tail]) -> |
| digit_list2int(Int*10 + Digit, Tail). |
| digit_list2int(Digits) when is_list(Digits) -> |
| digit_list2int(0, Digits). |
| |
| % Convert an integer value into a list of decimal digits |
| int2digit_list(0, Digits) when is_list(Digits) -> |
| Digits; |
| int2digit_list(Int, Digits) when is_integer(Int), is_list(Digits) -> |
| Digit = Int rem 10, |
| int2digit_list(Int div 10, [Digit|Digits]). |
| int2digit_list(Int) when is_integer(Int) -> |
| int2digit_list(Int, []). |
| |
| % reload configuration of an application |
| reload_config() -> |
| case init:get_argument(config) of |
| {ok, [ Files ]} -> |
| ConfFiles = [begin |
| S = filename:basename(F,".config"), |
| filename:join(filename:dirname(F), |
| S ++ ".config") |
| end || F <- Files], |
| % Move sys.config to the head of the list |
| Config = lists:sort(fun("sys.config", _) -> true; |
| (_, _) -> false end, ConfFiles), |
| |
| OldEnv = application_controller:prep_config_change(), |
| |
| Apps = [{application, A, make_appl(A)} |
| || {A,_,_} <- application:which_applications()], |
| application_controller:change_application_data(Apps, Config), |
| application_controller:config_change(OldEnv); |
| _ -> |
| {ok, []} |
| end. |
| |
| make_appl(App) when is_atom(App) -> |
| AppList = element(2,application:get_all_key(App)), |
| FullName = code:where_is_file(atom_to_list(App) ++ ".app"), |
| case file:consult(FullName) of |
| {ok, [{application, _, Opts}]} -> |
| Env = proplists:get_value(env, Opts, []), |
| lists:keyreplace(env, 1, AppList, {env, Env}); |
| {error, _Reason} -> |
| lists:keyreplace(env, 1, AppList, {env, []}) |
| end. |
| |
| |
| % Walk a named tuple and (recursively) all its fields, call user-supplied |
| % callback for each of them |
| tuple_walk(Tpl, TupleCb, Args) when is_tuple(Tpl), is_function(TupleCb), |
| is_list(Args) -> |
| tuple_walk([], Tpl, TupleCb, Args). |
| |
| tuple_walk(Path, Tpl, TupleCb, Args) when is_list(Path), is_tuple(Tpl), |
| is_list(Args) -> |
| % call Callback |
| NewTpl = TupleCb(Path, Tpl, Args), |
| [TplName|TplList] = tuple_to_list(NewTpl), |
| NewTplList = tuple_fieldlist_walk(Path, TplName, TplList, TupleCb, Args), |
| list_to_tuple([TplName|NewTplList]); |
| tuple_walk(Path, TplL, TupleCb, Args) when is_list(Path), is_list(TplL), |
| is_list(Args) -> |
| tuple_walk_list(Path, TplL, TupleCb, Args, []). |
| |
| tuple_walk_list(_Path, [], _TupleCb, _Args, OutList) -> |
| OutList; |
| tuple_walk_list(Path, [Head|Tail], TupleCb, Args, OutList) -> |
| if |
| is_tuple(Head) -> |
| NewHead = tuple_walk(Path, Head, TupleCb, Args); |
| is_list(Head) -> |
| NewHead = tuple_walk(Path, Head, TupleCb, Args); |
| true -> |
| NewHead = Head |
| end, |
| tuple_walk_list(Path, Tail, TupleCb, Args, OutList++[NewHead]). |
| |
| |
| tuple_fieldlist_walk(Path, TplName, FieldList, TupleCb, Args) -> |
| tuple_fieldlist_walk(Path, TplName, FieldList, TupleCb, Args, []). |
| |
| tuple_fieldlist_walk(_Path, _TplName, [], _TplCb, _Args, OutList) -> |
| OutList; |
| tuple_fieldlist_walk(Path, TplName, [Head|List], TupleCb, Args, OutList) -> |
| if |
| is_tuple(Head) -> |
| NewHead = tuple_walk(Path++[TplName], Head, TupleCb, Args); |
| is_list(Head) -> |
| NewHead = tuple_walk(Path++[TplName], Head, TupleCb, Args); |
| true -> |
| NewHead = Head |
| end, |
| tuple_fieldlist_walk(Path, TplName, List, TupleCb, Args, OutList++[NewHead]). |
| |
| |
| tuple_walk_print_cb(Path, Tpl, _Args) when is_list(Path), is_tuple(Tpl) -> |
| io:format("~p:~p~n", [Path, Tpl]), |
| Tpl. |