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buffer: make byteLength work with ArrayBuffer & DataView #5255

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JacksonTian
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Convert anything to string, but Buffer, TypedArray and ArrayBuffer

@mscdex mscdex added the buffer Issues and PRs related to the buffer subsystem. label Feb 16, 2016
@bnoordhuis
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LGTM. CI: https://ci.nodejs.org/job/node-test-pull-request/1676/

@ChALkeR
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ChALkeR commented Feb 16, 2016

Is this semver-minor or semver-major?

@jasnell
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jasnell commented Feb 16, 2016

I'd say semver-minor
/cc @trevnorris

@jasnell jasnell added the semver-minor PRs that contain new features and should be released in the next minor version. label Feb 16, 2016
@bnoordhuis
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I'd say semver-minor as well, it's additive. Running the CI one more time to see if the ARM failures are transient: https://ci.nodejs.org/job/node-test-pull-request/1677/

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ChALkeR commented Feb 16, 2016

Well, it actually changes the result on certain input values, but I guess that it would be safe to assume that noone is relying on the old behavior.

@trevnorris
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docs need to be updated with newly accepted arguments. implementation LGTM.

Mind making a comment in the commit message body about why this functionality is useful?

@jasnell
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jasnell commented Mar 21, 2016

@JacksonTian ... ping...

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Hi, @trevnorris @jasnell , I updated it.

jasnell
jasnell reviewed Mar 22, 2016
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doc/api/buffer.markdown
@@ -468,7 +468,7 @@ additional performance that `Buffer.allocUnsafe(size)` provides.

### Class Method: Buffer.byteLength(string[, encoding])

* `string` {String}
* `string` {String|Buffer|DataView|ArrayBuffer}
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nit: {String | Buffer | DataView | ArrayBuffer}

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This doesn't explicitly mention the encompasing of all typed arrays. there a way that can be included?

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I ask this b/c everything listed here is a discrete constructor. Which at quick glance would show that all typed arrays are not supported.

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jasnell commented Mar 22, 2016

LGTM with some nits

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jasnell commented Mar 22, 2016

New CI: https://ci.nodejs.org/job/node-test-pull-request/2011/

@JacksonTian
buffer: make byteLength work with ArrayBuffer & DataView
0c74f60 
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
```
@JacksonTian
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Hi @trevnorris , I added the TypedArray links.

jasnell pushed a commit that referenced this pull request Mar 27, 2016
@JacksonTian @jasnell
buffer: make byteLength work with ArrayBuffer & DataView
293fd04 
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: #5255
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@jasnell
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jasnell commented Mar 27, 2016

Landed in 293fd04

@jasnell jasnell closed this Mar 27, 2016
evanlucas pushed a commit that referenced this pull request Mar 30, 2016
@JacksonTian @evanlucas
buffer: make byteLength work with ArrayBuffer & DataView
ee83c95 
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: #5255
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@evanlucas evanlucas mentioned this pull request Mar 31, 2016
Closed
evanlucas added a commit that referenced this pull request Mar 31, 2016
@evanlucas
2016-03-31 Version 5.10.0 (Stable) Release
9cd6e98 
Notable changes:

* buffer:
  * make byteLength work with ArrayBuffer & DataView (Jackson Tian)
[#5255](#5255)
  * backport --zero-fill-buffers command line option (James M Snell)
[#5744](#5744)
  * backport new buffer constructor APIs (James M Snell)
[#5763](#5763)
  * add swap16() and swap32() methods (James M Snell)
[#5724](#5724)
* fs: add the fs.mkdtemp() function. (Florian MARGAINE)
[#5333](#5333)
* net: emit host in lookup event (HUANG Wei)
[#5598](#5598)
* node: --no-browser-globals configure flag (Fedor Indutny)
[#5853](#5853)
* npm: Upgrade to v3.8.3. (Forrest L Norvell)
* repl: support standalone blocks (Prince J Wesley)
[#5581](#5581)
* src: override v8 thread defaults using cli options (Tom Gallacher)
[#4344](#4344)
evanlucas added a commit that referenced this pull request Mar 31, 2016
@evanlucas
2016-03-31 Version 5.10.0 (Stable) Release
1bb2c4b 
Notable changes:

* buffer:
  * make byteLength work with ArrayBuffer & DataView (Jackson Tian)
[#5255](#5255)
  * backport --zero-fill-buffers command line option (James M Snell)
[#5744](#5744)
  * backport new buffer constructor APIs (James M Snell)
[#5763](#5763)
  * add swap16() and swap32() methods (James M Snell)
[#5724](#5724)
* fs: add the fs.mkdtemp() function. (Florian MARGAINE)
[#5333](#5333)
* net: emit host in lookup event (HUANG Wei)
[#5598](#5598)
* node: --no-browser-globals configure flag (Fedor Indutny)
[#5853](#5853)
* npm: Upgrade to v3.8.3. Fixes a security flaw in the use of
authentication tokens in HTTP requests that would allow an attacker to
set up a server that could collect tokens from users of the command-line
interface. Authentication tokens have previously been sent with every
request made by the CLI for logged-in users, regardless of the destination
of the request. This update fixes this by only including those tokens
for requests made against the registry or registries used for the
current install. (Forrest L Norvell)
[npm#6](npm#6)
* repl: support standalone blocks (Prince J Wesley)
[#5581](#5581)
* src: override v8 thread defaults using cli options (Tom Gallacher)
[#4344](#4344)
evanlucas added a commit that referenced this pull request Apr 1, 2016
@evanlucas
2016-03-31 Version 5.10.0 (Stable) Release
79ea8c3 
Notable changes:

* buffer:
  * make byteLength work with ArrayBuffer & DataView (Jackson Tian)
[#5255](#5255)
  * backport --zero-fill-buffers command line option (James M Snell)
[#5744](#5744)
  * backport new buffer constructor APIs (James M Snell)
[#5763](#5763)
  * add swap16() and swap32() methods (James M Snell)
[#5724](#5724)
* fs: add the fs.mkdtemp() function. (Florian MARGAINE)
[#5333](#5333)
* net: emit host in lookup event (HUANG Wei)
[#5598](#5598)
* node: --no-browser-globals configure flag (Fedor Indutny)
[#5853](#5853)
* npm: Upgrade to v3.8.3. Fixes a security flaw in the use of
authentication tokens in HTTP requests that would allow an attacker to
set up a server that could collect tokens from users of the command-line
interface. Authentication tokens have previously been sent with every
request made by the CLI for logged-in users, regardless of the destination
of the request. This update fixes this by only including those tokens
for requests made against the registry or registries used for the
current install. (Forrest L Norvell)
[npm#6](npm#6)
* repl: support standalone blocks (Prince J Wesley)
[#5581](#5581)
* src: override v8 thread defaults using cli options (Tom Gallacher)
[#4344](#4344)
evanlucas added a commit that referenced this pull request Apr 1, 2016
@evanlucas
2016-03-31 Version 5.10.0 (Stable) Release
64c87e2 
Notable changes:

* buffer:
  * make byteLength work with ArrayBuffer & DataView (Jackson Tian)
[#5255](#5255)
  * backport --zero-fill-buffers command line option (James M Snell)
[#5744](#5744)
  * backport new buffer constructor APIs (James M Snell)
[#5763](#5763)
  * add swap16() and swap32() methods (James M Snell)
[#5724](#5724)
* fs: add the fs.mkdtemp() function. (Florian MARGAINE)
[#5333](#5333)
* net: emit host in lookup event (HUANG Wei)
[#5598](#5598)
* node: --no-browser-globals configure flag (Fedor Indutny)
[#5853](#5853)
* npm: Upgrade to v3.8.3. Fixes a security flaw in the use of
authentication tokens in HTTP requests that would allow an attacker to
set up a server that could collect tokens from users of the command-line
interface. Authentication tokens have previously been sent with every
request made by the CLI for logged-in users, regardless of the destination
of the request. This update fixes this by only including those tokens
for requests made against the registry or registries used for the
current install. (Forrest L Norvell)
[npm#6](npm#6)
* repl: support standalone blocks (Prince J Wesley)
[#5581](#5581)
* src: override v8 thread defaults using cli options (Tom Gallacher)
[#4344](#4344)

PR-URL: #5970
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@JacksonTian @bnoordhuis @ChALkeR @jasnell @trevnorris @mscdex