1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
% 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]).
-export([make_prim/4, make_prim/3]).
-export([pointcode2int/1, pointcode2int/2, pointcode_fmt/2]).
-include("osmo_util.hrl").
-compile({parse_transform, exprecs}).
-export_records([primitive]).
% 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.
% helper function to create a #primitive record
make_prim(Subsys, GenName, SpecName) ->
make_prim(Subsys, GenName, SpecName, []).
make_prim(Subsys, GenName, SpecName, Param) ->
#primitive{subsystem = Subsys, gen_name = GenName,
spec_name = SpecName, parameters = Param}.
% parse a 3-tuple pointcode into a raw integer
pointcode2int(Int) when is_integer(Int) ->
Int;
pointcode2int(#pointcode{repr=Type, value=Value}) ->
pointcode2int(Type, Value);
pointcode2int({Std, Param}) ->
pointcode2int(Std, Param).
pointcode2int(itu, {A, B, C}) ->
<<PcInt:14/big>> = <<A:3, B:8, C:3>>,
PcInt;
pointcode2int(ansi, {A, B, C}) ->
<<PcInt:24/big>> = <<A:8, B:8, C:8>>,
PcInt;
pointcode2int(ttc, {A, B, C}) ->
<<PcInt:16/big>> = <<A:5, B:4, C:7>>,
PcInt.
% format a point-code into a 3-tuple according to the standard used
pointcode_fmt(Std, P) when is_binary(P) ->
<<PcInt/integer>> = P,
pointcode_fmt(Std, PcInt);
pointcode_fmt(itu, PcInt) when is_integer(PcInt) ->
<<A:3, B:8, C:3>> = <<PcInt:14/big>>,
{pointcode, itu, {A, B, C}};
pointcode_fmt(ansi, PcInt) ->
<<A:8, B:8, C:8>> = <<PcInt:24/big>>,
{pointcode, ansi, {A, B, C}};
pointcode_fmt(ttc, PcInt) ->
<<A:5, B:4, C:7>> = <<PcInt:16/big>>,
{pointcode, ttc, {A, B, C}}.
|
