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/*
* A socket.io encoder and decoder written in JavaScript complying with version 4
* of socket.io-protocol. Used by socket.io and socket.io-client.
*
* Copyright (c) 2014 Guillermo Rauch <guillermo@learnboost.com>
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of the library source tree.
*
*/
"use strict";
/**
* Reconstructs a binary packet from its placeholder packet and buffers
*
* @param {Object} packet - event packet with placeholders
* @param {Array} buffers - binary buffers to put in placeholder positions
* @return {Object} reconstructed packet
* @api public
*/
exports.reconstructPacket = function (packet, buffers) {
packet.data = _reconstructPacket(packet.data, buffers);
packet.attachments = undefined; // no longer useful
return packet;
};
function _reconstructPacket(data, buffers) {
if (!data) {
return data;
}
if (data && data._placeholder) {
return buffers[data.num]; // appropriate buffer (should be natural order anyway)
} else if (Array.isArray(data)) {
for (let i = 0; i < data.length; i++) {
data[i] = _reconstructPacket(data[i], buffers);
}
} else if (typeof data === "object") {
for (const key in data) {
data[key] = _reconstructPacket(data[key], buffers);
}
}
return data;
}