Implement FileSystemFileEntry.file()

[Chris Dumez]

Implement FileSystemFileEntry.file():
- https://wicg.github.io/entries-api/#dom-filesystemfileentry-file

[Radar WebKit Bug Importer]

<rdar://problem/34187756>

[Chris Dumez]

Created attachment 319752 [details]
Patch

[Sam Weinig]

Comment on attachment 319752 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=319752&action=review

> Source/WebCore/Modules/entriesapi/DOMFileSystem.cpp:168
> +    if (!getFileMetadata(fullPath, metadata, ShouldFollowSymbolicLinks::No))
> +        return Exception { NotFoundError, ASCIILiteral("Path does not exist") };

Is it time we had a getFileMetadata that returned an std::optional<FileMetadata> or Expected<FileMetadata>?

> Source/WebCore/Modules/entriesapi/DOMFileSystem.cpp:321
> +    String virtualPath = fileEntry.virtualPath();
> +    String fullPath = evaluatePath(virtualPath);

could use auto here.

> Source/WebCore/Modules/entriesapi/FileSystemFileEntry.cpp:53
> +        if (successCallback)
> +            successCallback->handleEvent(result.releaseReturnValue());

I'm possibly looking at the wrong version of the spec, https://wicg.github.io/entries-api/#api-fileentry, but it looks to me like success callback should not be nullable, so I think you can update the IDL and remove this null check.

[Chris Dumez]

Comment on attachment 319752 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=319752&action=review

>> Source/WebCore/Modules/entriesapi/DOMFileSystem.cpp:168
>> +        return Exception { NotFoundError, ASCIILiteral("Path does not exist") };
> 
> Is it time we had a getFileMetadata that returned an std::optional<FileMetadata> or Expected<FileMetadata>?

Yes, I can do this in a follow-up.

>> Source/WebCore/Modules/entriesapi/DOMFileSystem.cpp:321
>> +    String fullPath = evaluatePath(virtualPath);
> 
> could use auto here.

Hmm, OK. This is almost the same length :)

>> Source/WebCore/Modules/entriesapi/FileSystemFileEntry.cpp:53
>> +            successCallback->handleEvent(result.releaseReturnValue());
> 
> I'm possibly looking at the wrong version of the spec, https://wicg.github.io/entries-api/#api-fileentry, but it looks to me like success callback should not be nullable, so I think you can update the IDL and remove this null check.

Hmm, you're right. Not sure how I got this wrong. Will fix.

[Chris Dumez]

Created attachment 319755 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 319755 [details]
Patch

Clearing flags on attachment: 319755

Committed r221544: <http://trac.webkit.org/changeset/221544>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.