122 lines
2.8 KiB
JavaScript
122 lines
2.8 KiB
JavaScript
// Copyright 2011 Mark Cavage, Inc. All rights reserved.
|
|
|
|
var assert = require('assert');
|
|
|
|
var Protocol = require('./protocol');
|
|
|
|
|
|
|
|
///--- API
|
|
|
|
function Attribute(options) {
|
|
if (options) {
|
|
if (typeof(options) !== 'object')
|
|
throw new TypeError('options must be an object');
|
|
if (options.type && typeof(options.type) !== 'string')
|
|
throw new TypeError('options.type must be a string');
|
|
if (options.vals && !Array.isArray(options.vals))
|
|
throw new TypeErrr('options.vals must be an array[string]');
|
|
if (options.vals && options.vals.length) {
|
|
options.vals.forEach(function(v) {
|
|
if (typeof(v) !== 'string')
|
|
throw new TypeErrr('options.vals must be an array[string]');
|
|
});
|
|
}
|
|
} else {
|
|
options = {};
|
|
}
|
|
|
|
this.type = options.type || '';
|
|
this.vals = options.vals ? options.vals.slice(0) : [];
|
|
|
|
var self = this;
|
|
this.__defineGetter__('json', function() {
|
|
return {
|
|
type: self.type,
|
|
vals: self.vals
|
|
};
|
|
});
|
|
}
|
|
module.exports = Attribute;
|
|
|
|
|
|
Attribute.compare = function(a, b) {
|
|
if (!(a instanceof Attribute) || !(b instanceof Attribute))
|
|
throw new TypeError('can only compare Attributes');
|
|
|
|
if (a.type < b.type) return -1;
|
|
if (a.type > b.type) return 1;
|
|
if (a.vals.length < b.vals.length) return -1;
|
|
if (a.vals.length > b.vals.length) return 1;
|
|
|
|
for (var i = 0; i < a.vals.length; i++) {
|
|
if (a.vals[i] < b.vals[i]) return -1;
|
|
if (a.vals[i] > b.vals[i]) return 1;
|
|
}
|
|
|
|
return 0;
|
|
};
|
|
|
|
Attribute.prototype.addValue = function(val) {
|
|
if (typeof(val) !== 'string')
|
|
throw new TypeError('val (string) required');
|
|
|
|
this.vals.push(val);
|
|
};
|
|
|
|
|
|
Attribute.prototype.parse = function(ber) {
|
|
assert.ok(ber);
|
|
|
|
ber.readSequence();
|
|
this.type = ber.readString().toLowerCase();
|
|
|
|
|
|
if (ber.readSequence(Protocol.LBER_SET)) {
|
|
var end = ber.offset + ber.length;
|
|
while (ber.offset < end)
|
|
this.vals.push(ber.readString());
|
|
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
|
|
Attribute.prototype.toBer = function(ber) {
|
|
assert.ok(ber);
|
|
|
|
ber.startSequence();
|
|
ber.writeString(this.type);
|
|
if (this.vals && this.vals.length) {
|
|
ber.startSequence(Protocol.LBER_SET);
|
|
ber.writeStringArray(this.vals);
|
|
ber.endSequence();
|
|
}
|
|
ber.endSequence();
|
|
|
|
return ber;
|
|
};
|
|
|
|
Attribute.toBer = function(attr, ber) {
|
|
return Attribute.prototype.toBer.call(attr, ber);
|
|
};
|
|
|
|
|
|
Attribute.isAttribute = function(attr) {
|
|
if (!attr) return false;
|
|
if (typeof(attr) !== 'object') return false;
|
|
if (attr instanceof Attribute) return true;
|
|
if (!attr.type || typeof(attr.type) !== 'string') return false;
|
|
if (!attr.vals || !Array.isArray(attr.vals)) return false;
|
|
for (var i = 0; i < attr.vals.length; i++)
|
|
if (typeof(attr.vals[i]) !== 'string') return false;
|
|
|
|
return true;
|
|
};
|
|
|
|
|
|
Attribute.prototype.toString = function() {
|
|
return JSON.stringify(this.json);
|
|
};
|