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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>
57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
'use strict';
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// verify that the string decoder works getting 1 byte at a time,
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// the whole buffer at once, and that both match the .toString(enc)
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// result of the entire buffer.
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require('../common');
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var assert = require('assert');
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var SD = require('string_decoder').StringDecoder;
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var encodings = ['base64', 'hex', 'utf8', 'utf16le', 'ucs2'];
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var bufs = [ '☃💩', 'asdf' ].map(function(b) {
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return Buffer.from(b);
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});
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// also test just arbitrary bytes from 0-15.
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for (var i = 1; i <= 16; i++) {
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var bytes = new Array(i).join('.').split('.').map(function(_, j) {
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return j + 0x78;
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});
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bufs.push(Buffer.from(bytes));
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}
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encodings.forEach(testEncoding);
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console.log('ok');
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function testEncoding(encoding) {
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bufs.forEach(function(buf) {
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testBuf(encoding, buf);
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});
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}
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function testBuf(encoding, buf) {
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console.error('# %s', encoding, buf);
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// write one byte at a time.
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var s = new SD(encoding);
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var res1 = '';
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for (var i = 0; i < buf.length; i++) {
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res1 += s.write(buf.slice(i, i + 1));
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}
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res1 += s.end();
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// write the whole buffer at once.
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var res2 = '';
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s = new SD(encoding);
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res2 += s.write(buf);
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res2 += s.end();
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// .toString() on the buffer
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var res3 = buf.toString(encoding);
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console.log('expect=%j', res3);
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assert.equal(res1, res3, 'one byte at a time should match toString');
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assert.equal(res2, res3, 'all bytes at once should match toString');
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}
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