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feat: replace new Buffer with modern versions · mongodb/js-bson@24aefba · GitHub

  1. mongodb
  2. js-bson

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Commit 24aefba

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daprahamian
committed
feat: replace new Buffer with modern versions
Replace new Buffer with wrappers around Buffer.alloc and Buffer.from, to avoid deprecation messages. Fixes NODE-1789
1 parent 35beb90 commit 24aefba

6 files changed

Lines changed: 50 additions & 27 deletions

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‎lib/bson/binary.js‎

Lines changed: 6 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -9,6 +9,8 @@ if (typeof global !== 'undefined') {
99
var Buffer = require('buffer').Buffer; // TODO just use global Buffer
1010
}
1111

12+
var utils = require('./parser/utils');
13+
1214
/**
1315
* A class representation of the BSON Binary type.
1416
*
@@ -53,7 +55,7 @@ function Binary(buffer, subType) {
5355
if (typeof buffer === 'string') {
5456
// Different ways of writing the length of the string for the different types
5557
if (typeof Buffer !== 'undefined') {
56-
this.buffer = new Buffer(buffer);
58+
this.buffer = utils.toBuffer(buffer);
5759
} else if (
5860
typeof Uint8Array !== 'undefined' ||
5961
Object.prototype.toString.call(buffer) === '[object Array]'
@@ -68,7 +70,7 @@ function Binary(buffer, subType) {
6870
this.position = buffer.length;
6971
} else {
7072
if (typeof Buffer !== 'undefined') {
71-
this.buffer = new Buffer(Binary.BUFFER_SIZE);
73+
this.buffer = utils.allocBuffer(Binary.BUFFER_SIZE);
7274
} else if (typeof Uint8Array !== 'undefined') {
7375
this.buffer = new Uint8Array(new ArrayBuffer(Binary.BUFFER_SIZE));
7476
} else {
@@ -107,7 +109,7 @@ Binary.prototype.put = function put(byte_value) {
107109
} else {
108110
if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) {
109111
// Create additional overflow buffer
110-
var buffer = new Buffer(Binary.BUFFER_SIZE + this.buffer.length);
112+
var buffer = utils.allocBuffer(Binary.BUFFER_SIZE + this.buffer.length);
111113
// Combine the two buffers together
112114
this.buffer.copy(buffer, 0, 0, this.buffer.length);
113115
this.buffer = buffer;
@@ -150,7 +152,7 @@ Binary.prototype.write = function write(string, offset) {
150152
var buffer = null;
151153
// If we are in node.js
152154
if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) {
153-
buffer = new Buffer(this.buffer.length + string.length);
155+
buffer = utils.allocBuffer(this.buffer.length + string.length);
154156
this.buffer.copy(buffer, 0, 0, this.buffer.length);
155157
} else if (Object.prototype.toString.call(this.buffer) === '[object Uint8Array]') {
156158
// Create a new buffer

‎lib/bson/bson.js‎

Lines changed: 5 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,8 @@ var Map = require('./map'),
1818
// Parts of the parser
1919
var deserialize = require('./parser/deserializer'),
2020
serializer = require('./parser/serializer'),
21-
calculateObjectSize = require('./parser/calculate_size');
21+
calculateObjectSize = require('./parser/calculate_size'),
22+
utils = require('./parser/utils');
2223

2324
/**
2425
* @ignore
@@ -28,7 +29,7 @@ var deserialize = require('./parser/deserializer'),
2829
var MAXSIZE = 1024 * 1024 * 17;
2930

3031
// Current Internal Temporary Serialization Buffer
31-
var buffer = new Buffer(MAXSIZE);
32+
var buffer = utils.allocBuffer(MAXSIZE);
3233

3334
var BSON = function() {};
3435

@@ -56,7 +57,7 @@ BSON.prototype.serialize = function serialize(object, options) {
5657

5758
// Resize the internal serialization buffer if needed
5859
if (buffer.length < minInternalBufferSize) {
59-
buffer = new Buffer(minInternalBufferSize);
60+
buffer = utils.allocBuffer(minInternalBufferSize);
6061
}
6162

6263
// Attempt to serialize
@@ -71,7 +72,7 @@ BSON.prototype.serialize = function serialize(object, options) {
7172
[]
7273
);
7374
// Create the final buffer
74-
var finishedBuffer = new Buffer(serializationIndex);
75+
var finishedBuffer = utils.allocBuffer(serializationIndex);
7576
// Copy into the finished buffer
7677
buffer.copy(finishedBuffer, 0, 0, finishedBuffer.length);
7778
// Return the buffer

‎lib/bson/decimal128.js‎

Lines changed: 13 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -70,6 +70,8 @@ var INF_POSITIVE_BUFFER = [
7070

7171
var EXPONENT_REGEX = /^([-+])?(\d+)?$/;
7272

73+
var utils = require('./parser/utils');
74+
7375
// Detect if the value is a digit
7476
var isDigit = function(value) {
7577
return !isNaN(parseInt(value, 10));
@@ -143,7 +145,7 @@ var lessThan = function(left, right) {
143145
};
144146

145147
// var longtoHex = function(value) {
146-
// var buffer = new Buffer(8);
148+
// var buffer = utils.allocBuffer(8);
147149
// var index = 0;
148150
// // Encode the low 64 bits of the decimal
149151
// // Encode low bits
@@ -160,7 +162,7 @@ var lessThan = function(left, right) {
160162
// };
161163

162164
// var int32toHex = function(value) {
163-
// var buffer = new Buffer(4);
165+
// var buffer = utils.allocBuffer(4);
164166
// var index = 0;
165167
// // Encode the low 64 bits of the decimal
166168
// // Encode low bits
@@ -265,17 +267,17 @@ Decimal128.fromString = function(string) {
265267
// Check if user passed Infinity or NaN
266268
if (!isDigit(string[index]) && string[index] !== '.') {
267269
if (string[index] === 'i' || string[index] === 'I') {
268-
return new Decimal128(new Buffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
270+
return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
269271
} else if (string[index] === 'N') {
270-
return new Decimal128(new Buffer(NAN_BUFFER));
272+
return new Decimal128(utils.toBuffer(NAN_BUFFER));
271273
}
272274
}
273275

274276
// Read all the digits
275277
while (isDigit(string[index]) || string[index] === '.') {
276278
if (string[index] === '.') {
277279
if (sawRadix) {
278-
return new Decimal128(new Buffer(NAN_BUFFER));
280+
return new Decimal128(utils.toBuffer(NAN_BUFFER));
279281
}
280282

281283
sawRadix = true;
@@ -320,7 +322,7 @@ Decimal128.fromString = function(string) {
320322

321323
// No digits read
322324
if (!match || !match[2]) {
323-
return new Decimal128(new Buffer(NAN_BUFFER));
325+
return new Decimal128(utils.toBuffer(NAN_BUFFER));
324326
}
325327

326328
// Get exponent
@@ -332,7 +334,7 @@ Decimal128.fromString = function(string) {
332334

333335
// Return not a number
334336
if (string[index]) {
335-
return new Decimal128(new Buffer(NAN_BUFFER));
337+
return new Decimal128(utils.toBuffer(NAN_BUFFER));
336338
}
337339

338340
// Done reading input
@@ -380,7 +382,7 @@ Decimal128.fromString = function(string) {
380382
exponent = EXPONENT_MAX;
381383
break;
382384
} else {
383-
return new Decimal128(new Buffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
385+
return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
384386
}
385387
}
386388

@@ -412,7 +414,7 @@ Decimal128.fromString = function(string) {
412414
exponent = EXPONENT_MAX;
413415
break;
414416
} else {
415-
return new Decimal128(new Buffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
417+
return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER));
416418
}
417419
}
418420
}
@@ -462,7 +464,7 @@ Decimal128.fromString = function(string) {
462464
digits[dIdx] = 1;
463465
} else {
464466
return new Decimal128(
465-
new Buffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER)
467+
utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER)
466468
);
467469
}
468470
}
@@ -547,7 +549,7 @@ Decimal128.fromString = function(string) {
547549
}
548550

549551
// Encode into a buffer
550-
var buffer = new Buffer(16);
552+
var buffer = utils.allocBuffer(16);
551553
index = 0;
552554

553555
// Encode the low 64 bits of the decimal

‎lib/bson/objectid.js‎

Lines changed: 6 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,8 @@
11
// Custom inspect property name / symbol.
22
var inspect = 'inspect';
33

4+
var utils = require('./parser/utils');
5+
46
/**
57
* Machine id.
68
*
@@ -58,7 +60,7 @@ var ObjectID = function ObjectID(id) {
5860
'Argument passed in must be a single String of 12 bytes or a string of 24 hex characters'
5961
);
6062
} else if (valid && typeof id === 'string' && id.length === 24 && hasBufferType) {
61-
return new ObjectID(new Buffer(id, 'hex'));
63+
return new ObjectID(utils.toBuffer(id, 'hex'));
6264
} else if (valid && typeof id === 'string' && id.length === 24) {
6365
return ObjectID.createFromHexString(id);
6466
} else if (id != null && id.length === 12) {
@@ -158,7 +160,7 @@ ObjectID.prototype.generate = function(time) {
158160
: process.pid) % 0xffff;
159161
var inc = this.get_inc();
160162
// Buffer used
161-
var buffer = new Buffer(12);
163+
var buffer = utils.allocBuffer(12);
162164
// Encode time
163165
buffer[3] = time & 0xff;
164166
buffer[2] = (time >> 8) & 0xff;
@@ -277,7 +279,7 @@ ObjectID.createPk = function createPk() {
277279
* @return {ObjectID} return the created ObjectID
278280
*/
279281
ObjectID.createFromTime = function createFromTime(time) {
280-
var buffer = new Buffer([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
282+
var buffer = utils.toBuffer([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
281283
// Encode time into first 4 bytes
282284
buffer[3] = time & 0xff;
283285
buffer[2] = (time >> 8) & 0xff;
@@ -315,7 +317,7 @@ ObjectID.createFromHexString = function createFromHexString(string) {
315317
}
316318

317319
// Use Buffer.from method if available
318-
if (hasBufferType) return new ObjectID(new Buffer(string, 'hex'));
320+
if (hasBufferType) return new ObjectID(utils.toBuffer(string, 'hex'));
319321

320322
// Calculate lengths
321323
var array = new _Buffer(12);

‎lib/bson/parser/deserializer.js‎

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -14,6 +14,8 @@ var Long = require('../long').Long,
1414
BSONRegExp = require('../regexp').BSONRegExp,
1515
Binary = require('../binary').Binary;
1616

17+
var utils = require('./utils');
18+
1719
var deserialize = function(buffer, options, isArray) {
1820
options = options == null ? {} : options;
1921
var index = options && options.index ? options.index : 0;
@@ -115,7 +117,7 @@ var deserializeObject = function(buffer, index, options, isArray) {
115117
object[name] = buffer.toString('utf8', index, index + stringSize - 1);
116118
index = index + stringSize;
117119
} else if (elementType === BSON.BSON_DATA_OID) {
118-
var oid = new Buffer(12);
120+
var oid = utils.allocBuffer(12);
119121
buffer.copy(oid, 0, index, index + 12);
120122
object[name] = new ObjectID(oid);
121123
index = index + 12;
@@ -220,7 +222,7 @@ var deserializeObject = function(buffer, index, options, isArray) {
220222
}
221223
} else if (elementType === BSON.BSON_DATA_DECIMAL128) {
222224
// Buffer to contain the decimal bytes
223-
var bytes = new Buffer(16);
225+
var bytes = utils.allocBuffer(16);
224226
// Copy the next 16 bytes into the bytes buffer
225227
buffer.copy(bytes, 0, index, index + 16);
226228
// Update index
@@ -520,7 +522,7 @@ var deserializeObject = function(buffer, index, options, isArray) {
520522
index = index + stringSize;
521523

522524
// Read the oid
523-
var oidBuffer = new Buffer(12);
525+
var oidBuffer = utils.allocBuffer(12);
524526
buffer.copy(oidBuffer, 0, index, index + 12);
525527
oid = new ObjectID(oidBuffer);
526528

‎lib/bson/parser/utils.js‎

Lines changed: 15 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,21 @@ function normalizedFunctionString(fn) {
88
return fn.toString().replace(/function *\(/, 'function (');
99
}
1010

11+
function newBuffer(item, encoding) {
12+
return new Buffer(item, encoding);
13+
}
14+
15+
function allocBuffer() {
16+
return Buffer.alloc.apply(Buffer, arguments);
17+
}
18+
19+
function toBuffer() {
20+
return Buffer.from.apply(Buffer, arguments);
21+
}
22+
1123
module.exports = {
12-
normalizedFunctionString: normalizedFunctionString
24+
normalizedFunctionString: normalizedFunctionString,
25+
allocBuffer: typeof Buffer.alloc === 'function' ? allocBuffer : newBuffer,
26+
toBuffer: typeof Buffer.from === 'function' ? toBuffer : newBuffer
1327
};
1428

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