Harald Welte | 7780489 | 2011-02-06 18:12:47 +0100 | [diff] [blame] | 1 | % Osmocom Erlang utility functions |
| 2 | |
| 3 | % (C) 2011 by Harald Welte <laforge@gnumonks.org> |
| 4 | % |
| 5 | % All Rights Reserved |
| 6 | % |
| 7 | % This program is free software; you can redistribute it and/or modify |
| 8 | % it under the terms of the GNU Affero General Public License as |
| 9 | % published by the Free Software Foundation; either version 3 of the |
| 10 | % License, or (at your option) any later version. |
| 11 | % |
| 12 | % This program is distributed in the hope that it will be useful, |
| 13 | % but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | % GNU General Public License for more details. |
| 16 | % |
| 17 | % You should have received a copy of the GNU Affero General Public License |
| 18 | % along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | |
| 20 | -module(osmo_util). |
| 21 | -author('Harald Welte <laforge@gnumonks.org>'). |
| 22 | |
| 23 | -export([digit_list2int/1, int2digit_list/1]). |
| 24 | -export([reload_config/0]). |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 25 | -export([tuple_walk/3, tuple_walk_print_cb/3]). |
Harald Welte | 0f2f596 | 2011-04-04 15:59:49 +0200 | [diff] [blame] | 26 | -export([make_prim/4, make_prim/3]). |
Harald Welte | 8ff5df4 | 2011-04-04 21:52:52 +0200 | [diff] [blame] | 27 | -export([pointcode2int/1, pointcode2int/2, pointcode_fmt/2]). |
Harald Welte | 0f2f596 | 2011-04-04 15:59:49 +0200 | [diff] [blame] | 28 | |
| 29 | -include("osmo_util.hrl"). |
| 30 | |
| 31 | -compile({parse_transform, exprecs}). |
| 32 | -export_records([primitive]). |
Harald Welte | 7780489 | 2011-02-06 18:12:47 +0100 | [diff] [blame] | 33 | |
| 34 | % Convert a list of digits to an integer value |
| 35 | digit_list2int(Int, []) -> |
| 36 | Int; |
| 37 | digit_list2int(Int, [Digit|Tail]) -> |
| 38 | digit_list2int(Int*10 + Digit, Tail). |
| 39 | digit_list2int(Digits) when is_list(Digits) -> |
| 40 | digit_list2int(0, Digits). |
| 41 | |
| 42 | % Convert an integer value into a list of decimal digits |
| 43 | int2digit_list(0, Digits) when is_list(Digits) -> |
| 44 | Digits; |
| 45 | int2digit_list(Int, Digits) when is_integer(Int), is_list(Digits) -> |
| 46 | Digit = Int rem 10, |
| 47 | int2digit_list(Int div 10, [Digit|Digits]). |
| 48 | int2digit_list(Int) when is_integer(Int) -> |
| 49 | int2digit_list(Int, []). |
| 50 | |
| 51 | % reload configuration of an application |
| 52 | reload_config() -> |
| 53 | case init:get_argument(config) of |
| 54 | {ok, [ Files ]} -> |
| 55 | ConfFiles = [begin |
| 56 | S = filename:basename(F,".config"), |
| 57 | filename:join(filename:dirname(F), |
| 58 | S ++ ".config") |
| 59 | end || F <- Files], |
| 60 | % Move sys.config to the head of the list |
| 61 | Config = lists:sort(fun("sys.config", _) -> true; |
| 62 | (_, _) -> false end, ConfFiles), |
| 63 | |
| 64 | OldEnv = application_controller:prep_config_change(), |
| 65 | |
| 66 | Apps = [{application, A, make_appl(A)} |
| 67 | || {A,_,_} <- application:which_applications()], |
| 68 | application_controller:change_application_data(Apps, Config), |
| 69 | application_controller:config_change(OldEnv); |
| 70 | _ -> |
| 71 | {ok, []} |
| 72 | end. |
| 73 | |
| 74 | make_appl(App) when is_atom(App) -> |
| 75 | AppList = element(2,application:get_all_key(App)), |
| 76 | FullName = code:where_is_file(atom_to_list(App) ++ ".app"), |
| 77 | case file:consult(FullName) of |
| 78 | {ok, [{application, _, Opts}]} -> |
| 79 | Env = proplists:get_value(env, Opts, []), |
| 80 | lists:keyreplace(env, 1, AppList, {env, Env}); |
| 81 | {error, _Reason} -> |
| 82 | lists:keyreplace(env, 1, AppList, {env, []}) |
| 83 | end. |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 84 | |
| 85 | |
| 86 | % Walk a named tuple and (recursively) all its fields, call user-supplied |
| 87 | % callback for each of them |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 88 | tuple_walk(Tpl, TupleCb, Args) when is_tuple(Tpl), is_function(TupleCb), |
| 89 | is_list(Args) -> |
| 90 | tuple_walk([], Tpl, TupleCb, Args). |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 91 | |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 92 | tuple_walk(Path, Tpl, TupleCb, Args) when is_list(Path), is_tuple(Tpl), |
| 93 | is_list(Args) -> |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 94 | % call Callback |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 95 | NewTpl = TupleCb(Path, Tpl, Args), |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 96 | [TplName|TplList] = tuple_to_list(NewTpl), |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 97 | NewTplList = tuple_fieldlist_walk(Path, TplName, TplList, TupleCb, Args), |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 98 | list_to_tuple([TplName|NewTplList]); |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 99 | tuple_walk(Path, TplL, TupleCb, Args) when is_list(Path), is_list(TplL), |
| 100 | is_list(Args) -> |
| 101 | tuple_walk_list(Path, TplL, TupleCb, Args, []). |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 102 | |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 103 | tuple_walk_list(_Path, [], _TupleCb, _Args, OutList) -> |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 104 | OutList; |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 105 | tuple_walk_list(Path, [Head|Tail], TupleCb, Args, OutList) -> |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 106 | if |
| 107 | is_tuple(Head) -> |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 108 | NewHead = tuple_walk(Path, Head, TupleCb, Args); |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 109 | is_list(Head) -> |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 110 | NewHead = tuple_walk(Path, Head, TupleCb, Args); |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 111 | true -> |
| 112 | NewHead = Head |
| 113 | end, |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 114 | tuple_walk_list(Path, Tail, TupleCb, Args, OutList++[NewHead]). |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 115 | |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 116 | |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 117 | tuple_fieldlist_walk(Path, TplName, FieldList, TupleCb, Args) -> |
| 118 | tuple_fieldlist_walk(Path, TplName, FieldList, TupleCb, Args, []). |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 119 | |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 120 | tuple_fieldlist_walk(_Path, _TplName, [], _TplCb, _Args, OutList) -> |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 121 | OutList; |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 122 | tuple_fieldlist_walk(Path, TplName, [Head|List], TupleCb, Args, OutList) -> |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 123 | if |
| 124 | is_tuple(Head) -> |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 125 | NewHead = tuple_walk(Path++[TplName], Head, TupleCb, Args); |
Harald Welte | 4a0afae | 2011-03-07 23:54:04 +0100 | [diff] [blame] | 126 | is_list(Head) -> |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 127 | NewHead = tuple_walk(Path++[TplName], Head, TupleCb, Args); |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 128 | true -> |
| 129 | NewHead = Head |
| 130 | end, |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 131 | tuple_fieldlist_walk(Path, TplName, List, TupleCb, Args, OutList++[NewHead]). |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 132 | |
| 133 | |
Harald Welte | 8a6823d | 2011-03-08 16:03:31 +0100 | [diff] [blame] | 134 | tuple_walk_print_cb(Path, Tpl, _Args) when is_list(Path), is_tuple(Tpl) -> |
Harald Welte | cf43601 | 2011-03-07 12:54:15 +0100 | [diff] [blame] | 135 | io:format("~p:~p~n", [Path, Tpl]), |
| 136 | Tpl. |
Harald Welte | 0f2f596 | 2011-04-04 15:59:49 +0200 | [diff] [blame] | 137 | |
| 138 | % helper function to create a #primitive record |
| 139 | make_prim(Subsys, GenName, SpecName) -> |
| 140 | make_prim(Subsys, GenName, SpecName, []). |
| 141 | make_prim(Subsys, GenName, SpecName, Param) -> |
| 142 | #primitive{subsystem = Subsys, gen_name = GenName, |
| 143 | spec_name = SpecName, parameters = Param}. |
Harald Welte | 8ff5df4 | 2011-04-04 21:52:52 +0200 | [diff] [blame] | 144 | |
| 145 | % parse a 3-tuple pointcode into a raw integer |
Harald Welte | 7ad37a2 | 2011-12-08 11:50:00 +0100 | [diff] [blame] | 146 | pointcode2int(Int) when is_integer(Int) -> |
| 147 | Int; |
Harald Welte | ba0ada7 | 2011-12-08 00:56:30 +0100 | [diff] [blame] | 148 | pointcode2int(#pointcode{repr=Type, value=Value}) -> |
| 149 | pointcode2int(Type, Value); |
Harald Welte | 8ff5df4 | 2011-04-04 21:52:52 +0200 | [diff] [blame] | 150 | pointcode2int({Std, Param}) -> |
| 151 | pointcode2int(Std, Param). |
| 152 | |
| 153 | pointcode2int(itu, {A, B, C}) -> |
| 154 | <<PcInt:14/big>> = <<A:3, B:8, C:3>>, |
| 155 | PcInt; |
| 156 | pointcode2int(ansi, {A, B, C}) -> |
| 157 | <<PcInt:24/big>> = <<A:8, B:8, C:8>>, |
| 158 | PcInt; |
| 159 | pointcode2int(ttc, {A, B, C}) -> |
| 160 | <<PcInt:16/big>> = <<A:5, B:4, C:7>>, |
| 161 | PcInt. |
| 162 | |
| 163 | % format a point-code into a 3-tuple according to the standard used |
| 164 | pointcode_fmt(Std, P) when is_binary(P) -> |
| 165 | <<PcInt/integer>> = P, |
| 166 | pointcode_fmt(Std, PcInt); |
| 167 | pointcode_fmt(itu, PcInt) when is_integer(PcInt) -> |
| 168 | <<A:3, B:8, C:3>> = <<PcInt:14/big>>, |
| 169 | {pointcode, itu, {A, B, C}}; |
| 170 | pointcode_fmt(ansi, PcInt) -> |
| 171 | <<A:8, B:8, C:8>> = <<PcInt:24/big>>, |
| 172 | {pointcode, ansi, {A, B, C}}; |
| 173 | pointcode_fmt(ttc, PcInt) -> |
| 174 | <<A:5, B:4, C:7>> = <<PcInt:16/big>>, |
| 175 | {pointcode, ttc, {A, B, C}}. |