1
|
var asn1 = require('../asn1');
|
2
|
var inherits = require('inherits');
|
3
|
|
4
|
var api = exports;
|
5
|
|
6
|
api.define = function define(name, body) {
|
7
|
return new Entity(name, body);
|
8
|
};
|
9
|
|
10
|
function Entity(name, body) {
|
11
|
this.name = name;
|
12
|
this.body = body;
|
13
|
|
14
|
this.decoders = {};
|
15
|
this.encoders = {};
|
16
|
};
|
17
|
|
18
|
Entity.prototype._createNamed = function createNamed(base) {
|
19
|
var named;
|
20
|
try {
|
21
|
named = require('vm').runInThisContext(
|
22
|
'(function ' + this.name + '(entity) {\n' +
|
23
|
' this._initNamed(entity);\n' +
|
24
|
'})'
|
25
|
);
|
26
|
} catch (e) {
|
27
|
named = function (entity) {
|
28
|
this._initNamed(entity);
|
29
|
};
|
30
|
}
|
31
|
inherits(named, base);
|
32
|
named.prototype._initNamed = function initnamed(entity) {
|
33
|
base.call(this, entity);
|
34
|
};
|
35
|
|
36
|
return new named(this);
|
37
|
};
|
38
|
|
39
|
Entity.prototype._getDecoder = function _getDecoder(enc) {
|
40
|
enc = enc || 'der';
|
41
|
// Lazily create decoder
|
42
|
if (!this.decoders.hasOwnProperty(enc))
|
43
|
this.decoders[enc] = this._createNamed(asn1.decoders[enc]);
|
44
|
return this.decoders[enc];
|
45
|
};
|
46
|
|
47
|
Entity.prototype.decode = function decode(data, enc, options) {
|
48
|
return this._getDecoder(enc).decode(data, options);
|
49
|
};
|
50
|
|
51
|
Entity.prototype._getEncoder = function _getEncoder(enc) {
|
52
|
enc = enc || 'der';
|
53
|
// Lazily create encoder
|
54
|
if (!this.encoders.hasOwnProperty(enc))
|
55
|
this.encoders[enc] = this._createNamed(asn1.encoders[enc]);
|
56
|
return this.encoders[enc];
|
57
|
};
|
58
|
|
59
|
Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) {
|
60
|
return this._getEncoder(enc).encode(data, reporter);
|
61
|
};
|