Add hs.image.imageFromData()

[cmsj]

We don't currently have a constructor for taking a Lua bytestream and turning it into an hs.image object, for example if one is fetching an image with hs.http.

(we have hs.image.imageFromURL(), but afaics that's a blocking call)

[asmagill]

If the binary data is encoded as a URL string, hs.image.imageFromURL will convert it to an image... as I recall, an encoded image string is base64 encoded with a prefix of `data:;base64,'.

hs.image:encodeAsURLString will take an existing image you've picked up from some source and convert it into a proper string for you (my intention was to add image saving to my clipboard manager, but I haven't got around to it yet)

Or do you want something that can take incoming binary data as a stream (like stdin and hs.task)?

[cmsj]

I think at the time I filed this, I was mostly thinking about fetching an image with the async variants of hs.http, but stdin/hs.task are also possibilities.

[asmagill]

K, wasn't entirely sure what you wanted here so I figured I'd point these out in case you had missed them.