Sha256: 9d38b41cfe97821348e02e219b6485f2d24c281cb18aa2af5530752f46caba38
Contents?: true
Size: 1.36 KB
Versions: 35
Compression:
Stored size: 1.36 KB
Contents
/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
/**
* Merges an array of buffers into a target buffer.
*
* @param {Buffer} target The target buffer
* @param {Buffer[]} buffers The array of buffers to merge
* @public
*/
const merge = (target, buffers) => {
var offset = 0;
for (var i = 0; i < buffers.length; i++) {
const buf = buffers[i];
buf.copy(target, offset);
offset += buf.length;
}
};
/**
* Masks a buffer using the given mask.
*
* @param {Buffer} source The buffer to mask
* @param {Buffer} mask The mask to use
* @param {Buffer} output The buffer where to store the result
* @param {Number} offset The offset at which to start writing
* @param {Number} length The number of bytes to mask.
* @public
*/
const mask = (source, mask, output, offset, length) => {
for (var i = 0; i < length; i++) {
output[offset + i] = source[i] ^ mask[i & 3];
}
};
/**
* Unmasks a buffer using the given mask.
*
* @param {Buffer} buffer The buffer to unmask
* @param {Buffer} mask The mask to use
* @public
*/
const unmask = (buffer, mask) => {
// Required until https://github.com/nodejs/node/issues/9006 is resolved.
const length = buffer.length;
for (var i = 0; i < length; i++) {
buffer[i] ^= mask[i & 3];
}
};
module.exports = { merge, mask, unmask };
Version data entries
35 entries across 35 versions & 2 rubygems