Commit Graph

6 Commits

Author SHA1 Message Date
Jackson Tian
293fd04535 buffer: make byteLength work with ArrayBuffer & DataView
Convert anything to string, but Buffer, TypedArray and ArrayBuffer

```
var uint8 = new Uint8Array([0xf0, 0x9f, 0x90]);
Buffer.byteLength(uint8); // should be 3, but returns 11
Buffer.byteLength(uint8.buffer); // should be 3, but return 20
```

PR-URL: https://github.com/nodejs/node/pull/5255
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
2016-03-27 09:19:39 -07:00
James M Snell
85ab4a5f12 buffer: add .from(), .alloc() and .allocUnsafe()
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>
2016-03-16 08:34:02 -07:00
Jackson Tian
8d0ca10752 buffer: make byteLength work with Buffer correctly
Make the byteLength work correctly when input is Buffer.

e.g:

```js
// The incomplete unicode string
Buffer.byteLength(new Buffer([0xe4, 0xb8, 0xad, 0xe6, 0x96]))
```
The old output: 9
The new output: 5

PR-URL: https://github.com/nodejs/node/pull/4738
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
2016-01-18 08:54:38 -08:00
Rich Trott
082cc8d6d8 test: remove unnecessary assignments
common.js needs to be loaded in all tests so that there is checking
for variable leaks and possibly other things. However, it does not
need to be assigned to a variable if nothing in common.js is referred
to elsewhere in the test.

PR-URL: https://github.com/nodejs/node/pull/4408
Reviewed-By: James M Snell <jasnell@gmail.com>
2015-12-26 18:00:02 -08:00
Sakthipriyan Vairamani
5f6579d366 buffer: remove raw & raws encoding
As `raw` and `raws` encodings are deprecated for such a long time, and
they both are undocumented, this patch removes the support for those
encodings completely.

Previous discussion: https://github.com/nodejs/node/pull/2829

PR-URL: https://github.com/nodejs/node/pull/2859
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
2015-09-17 05:03:51 +05:30
Brendan Ashworth
9da168b71f buffer: optimize Buffer.byteLength
Buffer.byteLength is important for speed because it is called whenever a
new Buffer is created from a string.

This commit optimizes Buffer.byteLength execution by:
- moving base64 length calculation into JS-land, which is now much
  faster
- remove redundant code and streamline the UTF8 length calculation

It also adds a benchmark and better tests.

PR-URL: https://github.com/nodejs/io.js/pull/1713
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
2015-05-22 15:31:03 -07:00