You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.9 KiB
104 lines
2.9 KiB
4 years ago
|
'use strict';
|
||
|
|
|
||
|
|
var TOKEN = /([!#\$%&'\*\+\-\.\^_`\|~0-9A-Za-z]+)/,
|
||
|
|
NOTOKEN = /([^!#\$%&'\*\+\-\.\^_`\|~0-9A-Za-z])/g,
|
||
|
|
QUOTED = /"((?:\\[\x00-\x7f]|[^\x00-\x08\x0a-\x1f\x7f"\\])*)"/,
|
||
|
|
PARAM = new RegExp(TOKEN.source + '(?:=(?:' + TOKEN.source + '|' + QUOTED.source + '))?'),
|
||
|
|
EXT = new RegExp(TOKEN.source + '(?: *; *' + PARAM.source + ')*', 'g'),
|
||
|
|
EXT_LIST = new RegExp('^' + EXT.source + '(?: *, *' + EXT.source + ')*$'),
|
||
|
|
NUMBER = /^-?(0|[1-9][0-9]*)(\.[0-9]+)?$/;
|
||
|
|
|
||
|
|
var hasOwnProperty = Object.prototype.hasOwnProperty;
|
||
|
|
|
||
|
|
var Parser = {
|
||
|
|
parseHeader: function(header) {
|
||
|
|
var offers = new Offers();
|
||
|
|
if (header === '' || header === undefined) return offers;
|
||
|
|
|
||
|
|
if (!EXT_LIST.test(header))
|
||
|
|
throw new SyntaxError('Invalid Sec-WebSocket-Extensions header: ' + header);
|
||
|
|
|
||
|
|
var values = header.match(EXT);
|
||
|
|
|
||
|
|
values.forEach(function(value) {
|
||
|
|
var params = value.match(new RegExp(PARAM.source, 'g')),
|
||
|
|
name = params.shift(),
|
||
|
|
offer = {};
|
||
|
|
|
||
|
|
params.forEach(function(param) {
|
||
|
|
var args = param.match(PARAM), key = args[1], data;
|
||
|
|
|
||
|
|
if (args[2] !== undefined) {
|
||
|
|
data = args[2];
|
||
|
|
} else if (args[3] !== undefined) {
|
||
|
|
data = args[3].replace(/\\/g, '');
|
||
|
|
} else {
|
||
|
|
data = true;
|
||
|
|
}
|
||
|
|
if (NUMBER.test(data)) data = parseFloat(data);
|
||
|
|
|
||
|
|
if (hasOwnProperty.call(offer, key)) {
|
||
|
|
offer[key] = [].concat(offer[key]);
|
||
|
|
offer[key].push(data);
|
||
|
|
} else {
|
||
|
|
offer[key] = data;
|
||
|
|
}
|
||
|
|
}, this);
|
||
|
|
offers.push(name, offer);
|
||
|
|
}, this);
|
||
|
|
|
||
|
|
return offers;
|
||
|
|
},
|
||
|
|
|
||
|
|
serializeParams: function(name, params) {
|
||
|
|
var values = [];
|
||
|
|
|
||
|
|
var print = function(key, value) {
|
||
|
|
if (value instanceof Array) {
|
||
|
|
value.forEach(function(v) { print(key, v) });
|
||
|
|
} else if (value === true) {
|
||
|
|
values.push(key);
|
||
|
|
} else if (typeof value === 'number') {
|
||
|
|
values.push(key + '=' + value);
|
||
|
|
} else if (NOTOKEN.test(value)) {
|
||
|
|
values.push(key + '="' + value.replace(/"/g, '\\"') + '"');
|
||
|
|
} else {
|
||
|
|
values.push(key + '=' + value);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
for (var key in params) print(key, params[key]);
|
||
|
|
|
||
|
|
return [name].concat(values).join('; ');
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
var Offers = function() {
|
||
|
|
this._byName = {};
|
||
|
|
this._inOrder = [];
|
||
|
|
};
|
||
|
|
|
||
|
|
Offers.prototype.push = function(name, params) {
|
||
|
|
if (!hasOwnProperty.call(this._byName, name))
|
||
|
|
this._byName[name] = [];
|
||
|
|
|
||
|
|
this._byName[name].push(params);
|
||
|
|
this._inOrder.push({ name: name, params: params });
|
||
|
|
};
|
||
|
|
|
||
|
|
Offers.prototype.eachOffer = function(callback, context) {
|
||
|
|
var list = this._inOrder;
|
||
|
|
for (var i = 0, n = list.length; i < n; i++)
|
||
|
|
callback.call(context, list[i].name, list[i].params);
|
||
|
|
};
|
||
|
|
|
||
|
|
Offers.prototype.byName = function(name) {
|
||
|
|
return this._byName[name] || [];
|
||
|
|
};
|
||
|
|
|
||
|
|
Offers.prototype.toArray = function() {
|
||
|
|
return this._inOrder.slice();
|
||
|
|
};
|
||
|
|
|
||
|
|
module.exports = Parser;
|