byp4a55 professor6T9

Linux sonniq.ru 5.15.0-161-generic #171-Ubuntu SMP Sat Oct 11 08:17:01 UTC 2025 x86_64
Apache/2.4.52 (Ubuntu)
127.0.0.1

File Name : buffer-util.js

'use strict';

const { EMPTY_BUFFER } = require('./constants');

/**
 * Merges an array of buffers into a new buffer.
 *
 * @param {Buffer[]} list The array of buffers to concat
 * @param {Number} totalLength The total length of buffers in the list
 * @return {Buffer} The resulting buffer
 * @public
 */
function concat(list, totalLength) {
  if (list.length === 0) return EMPTY_BUFFER;
  if (list.length === 1) return list[0];

const target = Buffer.allocUnsafe(totalLength);
  let offset = 0;

for (let i = 0; i < list.length; i++) {
    const buf = list[i];
    target.set(buf, offset);
    offset += buf.length;
  }

if (offset < totalLength) return target.slice(0, offset);

return target;
}

/**
 * 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
 */
function _mask(source, mask, output, offset, length) {
  for (let 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
 */
function _unmask(buffer, mask) {
  // Required until https://github.com/nodejs/node/issues/9006 is resolved.
  const length = buffer.length;
  for (let i = 0; i < length; i++) {
    buffer[i] ^= mask[i & 3];
  }
}

/**
 * Converts a buffer to an `ArrayBuffer`.
 *
 * @param {Buffer} buf The buffer to convert
 * @return {ArrayBuffer} Converted buffer
 * @public
 */
function toArrayBuffer(buf) {
  if (buf.byteLength === buf.buffer.byteLength) {
    return buf.buffer;
  }

return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
}

/**
 * Converts `data` to a `Buffer`.
 *
 * @param {*} data The data to convert
 * @return {Buffer} The buffer
 * @throws {TypeError}
 * @public
 */
function toBuffer(data) {
  toBuffer.readOnly = true;

if (Buffer.isBuffer(data)) return data;

let buf;

if (data instanceof ArrayBuffer) {
    buf = Buffer.from(data);
  } else if (ArrayBuffer.isView(data)) {
    buf = Buffer.from(data.buffer, data.byteOffset, data.byteLength);
  } else {
    buf = Buffer.from(data);
    toBuffer.readOnly = false;
  }

return buf;
}

try {
  const bufferUtil = require('bufferutil');
  const bu = bufferUtil.BufferUtil || bufferUtil;

module.exports = {
    concat,
    mask(source, mask, output, offset, length) {
      if (length < 48) _mask(source, mask, output, offset, length);
      else bu.mask(source, mask, output, offset, length);
    },
    toArrayBuffer,
    toBuffer,
    unmask(buffer, mask) {
      if (buffer.length < 32) _unmask(buffer, mask);
      else bu.unmask(buffer, mask);
    }
  };
} catch (e) /* istanbul ignore next */ {
  module.exports = {
    concat,
    mask: _mask,
    toArrayBuffer,
    toBuffer,
    unmask: _unmask
  };
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	0/0	0755	2025-01-05 01:07:21
..	dir	-	0/0	0755	2025-01-05 01:07:21
buffer-util.js	text/plain	2.97 KB	0/0	0644	2025-01-05 01:07:21
constants.js	text/plain	268 B	0/0	0644	2025-01-05 01:07:21
event-target.js	text/plain	4.29 KB	0/0	0644	2025-01-05 01:07:21
extension.js	text/plain	6.72 KB	0/0	0644	2025-01-05 01:07:21
limiter.js	text/plain	1.01 KB	0/0	0644	2025-01-05 01:07:21
permessage-deflate.js	text/plain	13.98 KB	0/0	0644	2025-01-05 01:07:21
receiver.js	text/plain	13.71 KB	0/0	0644	2025-01-05 01:07:21
sender.js	text/plain	10.57 KB	0/0	0644	2025-01-05 01:07:21
stream.js	text/plain	4.54 KB	0/0	0644	2025-01-05 01:07:21
validation.js	text/plain	2.44 KB	0/0	0644	2025-01-05 01:07:21
websocket-server.js	text/plain	12.29 KB	0/0	0644	2025-01-05 01:07:21
websocket.js	text/plain	30.18 KB	0/0	0644	2025-01-05 01:07:21

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