[whatwg] creating a new file via the File API
ian at hixie.ch
Thu Dec 15 13:04:03 PST 2011
On Mon, 15 Aug 2011, David Karger wrote:
> Apologies if I'm revisiting old territory. I've been doing work on pure
> (http://projects.csail.mit.edu/exhibit/Dido). For persistence, they
> read and write local files. There's already an <input type="file">
> interface for letting the user specify a file to be read. And I can use
> the same interface, inappropriately, to let the user overwrite a
> preexisting file. But things get much messier if I want to let the user
> specify a _new_ file to be written, because the file-open dialog doesn't
> offer users a way to specify a new filename. What I'd like to be able
> produce the "save file" dialog typical of most systems, with a graphical
> directory browser but including the option to specify a new filename.
> This problem isn't unique to me; a discussion on stackoverflow appears
> where the proposed solution is to use flash---and that would be an
> unfortunate loss of html5 purity. They also suggest the hack of using a
> data: url but that has size limitations.
> Perhaps <input type="file"> could be given an attribute specifying
> whether a new filename is permitted?
On Wed, 7 Sep 2011, Eric U wrote:
> This sounds like a job for the FileSaver interface. Currently no
> browser implements it, but we at Chrome have been considering it. At
> TPAC last year we discussed it a bit in the WebApps WG meeting; IIRC we
> talked about letting it take a URL instead of or in addition to just a
> Blob, for more general utility.
> I suggest you bring it up on public-webapps@, where that spec lives.
I agree that an API like FileSaver is the right way to do this. Using
<input type=file> wouldn't really fit well because that's more for
providing data for upload than providing a file for writing.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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