85ab4a5f12
Several changes:
* Soft-Deprecate Buffer() constructors
* Add `Buffer.from()`, `Buffer.alloc()`, and `Buffer.allocUnsafe()`
* Add `--zero-fill-buffers` command line option
* Add byteOffset and length to `new Buffer(arrayBuffer)` constructor
* buffer.fill('') previously had no effect, now zero-fills
* Update the docs
PR-URL: https://github.com/nodejs/node/pull/4682
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
20 lines
630 B
JavaScript
20 lines
630 B
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const path = require('path');
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const Buffer = require('buffer').Buffer;
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const fs = require('fs');
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const filepath = path.join(common.fixturesDir, 'x.txt');
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const fd = fs.openSync(filepath, 'r');
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const bufferAsync = Buffer.alloc(0);
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const bufferSync = Buffer.alloc(0);
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fs.read(fd, bufferAsync, 0, 0, 0, common.mustCall(function(err, bytesRead) {
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assert.equal(bytesRead, 0);
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assert.deepEqual(bufferAsync, Buffer.alloc(0));
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}));
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const r = fs.readSync(fd, bufferSync, 0, 0, 0);
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assert.deepEqual(bufferSync, Buffer.alloc(0));
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assert.equal(r, 0);
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