8308418604

Committed 16 Mar 2024 02:24PM UTC coverage: 99.936%. Remained the same

Build # 8308418604

Build Type

push

github

Committed by

web-flow

Commit Message

[doc] Replace `url.parse()` with `new URL()` (#2208)

Run Details

1066 of 1071 branches covered (99.53%)

1550 of 1551 relevant lines covered (99.94%)

26498.12 hits per line

Source File
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100.0

/lib/buffer-util.js

'use strict';

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

const FastBuffer = Buffer[Symbol.species];

/**
 * 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 new FastBuffer(target.buffer, target.byteOffset, 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) {
  for (let i = 0; i < buffer.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.length === buf.buffer.byteLength) {
    return buf.buffer;
  }

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

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

  return buf;
}

module.exports = {
  concat,
  mask: _mask,
  toArrayBuffer,
  toBuffer,
  unmask: _unmask
};

/* istanbul ignore else  */
if (!process.env.WS_NO_BUFFER_UTIL) {
  try {
    const bufferUtil = require('bufferutil');

    module.exports.mask = function (source, mask, output, offset, length) {
      if (length < 48) _mask(source, mask, output, offset, length);
      else bufferUtil.mask(source, mask, output, offset, length);
    };

    module.exports.unmask = function (buffer, mask) {
      if (buffer.length < 32) _unmask(buffer, mask);
      else bufferUtil.unmask(buffer, mask);
    };
  } catch (e) {
    // Continue regardless of the error.
  }
}

1	'use strict';
2
3	const { EMPTY_BUFFER } = require('./constants');	27✔
4
5	const FastBuffer = Buffer[Symbol.species];	27✔
6
7	/**
8	* Merges an array of buffers into a new buffer.
9	*
10	* @param {Buffer[]} list The array of buffers to concat
11	* @param {Number} totalLength The total length of buffers in the list
12	* @return {Buffer} The resulting buffer
13	* @public
14	*/
15	function concat(list, totalLength) {
16	if (list.length === 0) return EMPTY_BUFFER;	587,790✔
17	if (list.length === 1) return list[0];	28,701✔
18
19	const target = Buffer.allocUnsafe(totalLength);	270✔
20	let offset = 0;	270✔
21
22	for (let i = 0; i < list.length; i++) {	270✔
23	const buf = list[i];	621✔
24	target.set(buf, offset);	621✔
25	offset += buf.length;	621✔
26	}
27
28	if (offset < totalLength) {	270✔
29	return new FastBuffer(target.buffer, target.byteOffset, offset);	27✔
30	}
31
32	return target;	243✔
33	}
34
35	/**
36	* Masks a buffer using the given mask.
37	*
38	* @param {Buffer} source The buffer to mask
39	* @param {Buffer} mask The mask to use
40	* @param {Buffer} output The buffer where to store the result
41	* @param {Number} offset The offset at which to start writing
42	* @param {Number} length The number of bytes to mask.
43	* @public
44	*/
45	function _mask(source, mask, output, offset, length) {
46	for (let i = 0; i < length; i++) {	4,375✔
47	output[offset + i] = source[i] ^ mask[i & 3];	7,533✔
48	}
49	}
50
51	/**
52	* Unmasks a buffer using the given mask.
53	*
54	* @param {Buffer} buffer The buffer to unmask
55	* @param {Buffer} mask The mask to use
56	* @public
57	*/
58	function _unmask(buffer, mask) {
59	for (let i = 0; i < buffer.length; i++) {	1,350✔
60	buffer[i] ^= mask[i & 3];	7,744✔
61	}
62	}
63
64	/**
65	* Converts a buffer to an `ArrayBuffer`.
66	*
67	* @param {Buffer} buf The buffer to convert
68	* @return {ArrayBuffer} Converted buffer
69	* @public
70	*/
71	function toArrayBuffer(buf) {
72	if (buf.length === buf.buffer.byteLength) {	54✔
73	return buf.buffer;	27✔
74	}
75
76	return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.length);	27✔
77	}
78
79	/**
80	* Converts `data` to a `Buffer`.
81	*
82	* @param {*} data The data to convert
83	* @return {Buffer} The buffer
84	* @throws {TypeError}
85	* @public
86	*/
87	function toBuffer(data) {
88	toBuffer.readOnly = true;	25,676✔
89
90	if (Buffer.isBuffer(data)) return data;	25,676✔
91
92	let buf;
93
94	if (data instanceof ArrayBuffer) {	594✔
95	buf = new FastBuffer(data);	135✔
96	} else if (ArrayBuffer.isView(data)) {	459✔
97	buf = new FastBuffer(data.buffer, data.byteOffset, data.byteLength);	189✔
98	} else {
99	buf = Buffer.from(data);	270✔
100	toBuffer.readOnly = false;	270✔
101	}
102
103	return buf;	594✔
104	}
105
106	module.exports = {	27✔
107	concat,
108	mask: _mask,
109	toArrayBuffer,
110	toBuffer,
111	unmask: _unmask
112	};
113
114	/* istanbul ignore else */
115	if (!process.env.WS_NO_BUFFER_UTIL) {	27✔
116	try {	27✔
117	const bufferUtil = require('bufferutil');	27✔
118
119	module.exports.mask = function (source, mask, output, offset, length) {	27✔
120	if (length < 48) _mask(source, mask, output, offset, length);	4,834✔
121	else bufferUtil.mask(source, mask, output, offset, length);	459✔
122	};
123
124	module.exports.unmask = function (buffer, mask) {	27✔
125	if (buffer.length < 32) _unmask(buffer, mask);	1,755✔
126	else bufferUtil.unmask(buffer, mask);	405✔
127	};
128	} catch (e) {
129	// Continue regardless of the error.
130	}
131	}

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