[Webkit-unassigned] [Bug 46563] New: Fix DirectoryReader's behavior to trigger only one EntriesCallback per readEntries

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46563

           Summary: Fix DirectoryReader's behavior to trigger only one
                    EntriesCallback per readEntries
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kinuko at chromium.org
                CC: dumi at chromium.org, ericu at chromium.org


Current implementation assumes one DirectoryReader.readEntries() may triger multiple EntriesCallbacks (for each entries chunk) ending with an empty Entry array, but what the spec says is that one readEntries should yield only one EntriesCallback and we must maintain the status between multiple readEntries.
http://dev.w3.org/2009/dap/file-system/file-dir-sys.html#the-directoryreader-interface

Currently the browser implementation doesn't support chunk reading, but we still trigger EntriesCallback twice for each readEntries() -- one for returning entries and the other one for an empty array to indicate the end.   We should fix (a work-around fix for now) this behavior at least to make it conform to the spec.

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