Zipping files from streams

[Lazarus404]

I've noticed this library also contains a zip function, but no examples of how to use it. I need to download a bunch of files from AWS S3, zip them as they download, then feed the zip to the requesting user via Phoenix response. Is this possible with this library?

Thanks

[awetzel]

Unfortunatly, the ZIP Spec defines a way to allow streaming when writing the file with a "data descriptor" at the end of each file defining size and checksum AFTER the file. But nearly none implementation understand this data descriptor.
So no this lib will not create a zip as stream since it is not actually possible :)

But I plan to add support to write zip to a file with an Elixir binary "stream" input.

[Lazarus404]

Hi Arnaud,

This is what I'm attempting to do in Elixir:
http://engineroom.teamwork.com/how-to-securely-provide-a-zip-download-of-a-s3-file-bundle/

I don't know if that library helps? I'm essentially hoping to reduce
memory and drive requirement on the server

Regards,
Lee

On Mon, May 9, 2016 at 6:15 AM, Arnaud Wetzel [email protected]
wrote:

Unfortunatly, the ZIP Spec defines a way to allow streaming when writing
the file with a "data descriptor" at the end of each file defining size and
checksum AFTER the file. But nearly none implementation understand this
data descriptor.
So no this lib will not write zip file as stream since it is not actually
possible :)

But I plan to add support to write zip to a file with an Elixir binary
"stream" input.

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