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
176
177
178
179
180
181
182
183
184
|
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
%%
%% Module alternative to diameterc for dictionary compilation.
%%
%% Eg. 1> diameter_make:codec("mydict.dia").
%%
%% $ erl -noinput \
%% -boot start_clean \
%% -eval 'ok = diameter_make:codec("mydict.dia")' \
%% -s init stop
%%
-module(diameter_make).
-export([codec/2,
codec/1,
format/1,
flatten/1]).
-export_type([opt/0]).
-include("diameter_vsn.hrl").
%% Options passed to codec/2.
-type opt() :: {include|outdir|name|prefix|inherits, string()}
| return
| verbose
| parse %% internal parsed form
| forms %% abstract format from which erl is generated
| beam %% compiled directly from preprocessed forms
| erl
| hrl.
%% Internal parsed format with a version tag.
-type parsed() :: list().
%% Literal dictionary or path. A NL of CR identifies the former.
-type dict() :: iolist()
| binary()
| parsed(). %% as returned by codec/2
%% Name of a literal dictionary if otherwise unspecified.
-define(DEFAULT_DICT_FILE, "dictionary.dia").
%% ===========================================================================
%% codec/1-2
%%
%% Parse a dictionary file and generate a codec module. Input
%% dictionary can be either a path or the dictionary itself: the
%% occurrence of \n or \r in the argument is used to distinguish the
%% two.
-spec codec(File, [opt()])
-> ok
| {ok, list()} %% with option 'return', one element for each output
| {error, Reason}
when File :: dict()
| {path, file:name_all()},
Reason :: string().
codec(File, Opts) ->
{Dict, Path} = identify(File),
case parse(Dict, Opts) of
{ok, ParseD} ->
make(Path, default(Opts), ParseD);
{error = E, Reason} ->
{E, diameter_dict_util:format_error(Reason)}
end.
codec(File) ->
codec(File, []).
%% format/1
%%
%% Turn an orddict returned by dict/1-2 back into a dictionary.
-spec format(parsed())
-> iolist().
format([?VERSION | Dict]) ->
diameter_dict_util:format(Dict).
%% flatten/1
%%
%% Reconstitute a dictionary without @inherits.
-spec flatten(parsed())
-> parsed().
flatten([?VERSION = V | Dict]) ->
[V | lists:foldl(fun flatten/2, Dict, [[avp_types, import_avps],
[grouped, import_groups],
[enum, import_enums]])].
flatten([_,_] = Keys, Dict) ->
[Values, Imports] = [orddict:fetch(K, Dict) || K <- Keys],
Vs = lists:append([Values | [V || {_,V} <- Imports]]),
lists:foldl(fun store/2,
Dict,
lists:zip([inherits | Keys], [[], Vs, []])).
store({Key, Value}, Dict) ->
orddict:store(Key, Value, Dict).
%% ===========================================================================
parse({dict, ParseD}, _) ->
{ok, ParseD};
parse(File, Opts) ->
diameter_dict_util:parse(File, Opts).
default(Opts) ->
def(modes(Opts), Opts).
def([], Opts) ->
[erl, hrl | Opts];
def(_, Opts) ->
Opts.
modes(Opts) ->
lists:filter(fun is_mode/1, Opts).
is_mode(T) ->
lists:member(T, [erl, hrl, parse, forms, beam]).
identify([Vsn | [T|_] = ParseD])
when is_tuple(T) ->
?VERSION == Vsn orelse erlang:error({version, {Vsn, ?VERSION}}),
{{dict, ParseD}, ?DEFAULT_DICT_FILE};
identify({path, File} = T) ->
{T, File};
identify(File) ->
Bin = iolist_to_binary([File]),
case is_path(Bin) of
true -> {{path, File}, File};
false -> {Bin, ?DEFAULT_DICT_FILE}
end.
%% Interpret anything containing \n or \r as a literal dictionary,
%% otherwise a path. (Which might be the wrong guess in the worst case.)
is_path(Bin) ->
try
[throw(C) || <<C>> <= Bin, $\n == C orelse $\r == C],
true
catch
throw:_ -> false
end.
make(File, Opts, Dict) ->
ok(lists:foldl(fun(M,A) -> [make(File, Opts, Dict, M) | A] end,
[],
modes(Opts))).
ok([ok|_]) ->
ok;
ok([_|_] = L) ->
{ok, lists:reverse(L)}.
make(File, Opts, Dict, Mode) ->
try
diameter_codegen:from_dict(File, Dict, Opts, Mode)
catch
error: Reason ->
erlang:error({Reason, Mode, erlang:get_stacktrace()})
end.
|
