Node.js Base64 Image decoding and writing to file

[Mehdi Avdi]

Hi everyone,

I'm sending the contents of this Flex form (Don't ask why) over to node. There is a post paramteter called "photo" which is a base64 encoded image.

Contents of photo get sent over ok. Problem is when I am trying to decode the content and write them to a file.

  var fs = require("fs");

  fs.writeFile("arghhhh.jpg", new Buffer(request.body.photo, "base64").toString(), function(err) {});

I've tried toString("binary") as well. But it seems node doesnt decode all of the content. It seems it only decodes jpg header info and leaves the rest.

Can anyone please help me with this?

Thanks

[mscdex]

On Apr 5, 7:57 pm, Mehdi Avdi <mehdi.a...@gmail.com> wrote:
> I've tried toString("binary") as well. But it seems node doesnt decode all
> of the content. It seems it only decodes jpg header info and leaves the
> rest.

Did you try not using toString() at all?:

fs.writeFile("arghhhh.jpg", new Buffer(request.body.photo, "base64"),
function(err) {});

[dvbportal]

It could be due to chunking that the body is not yet complete when your code runs.

[Jann Horn]

On Thu, Apr 05, 2012 at 04:57:30PM -0700, Mehdi Avdi wrote:
> I'm sending the contents of this Flex form (Don't ask why) over to node.
> There is a post paramteter called "photo" which is a base64 encoded image.
>
> Contents of photo get sent over ok. Problem is when I am trying to decode
> the content and write them to a file.
>
> var fs = require("fs");
>
> fs.writeFile("arghhhh.jpg", new Buffer(request.body.photo, "base64").toString(), function(err) {});

That's totally wrong. Leave out the .toString():

fs.writeFile("arghhhh.jpg", new Buffer(request.body.photo, "base64"), function(err) {});

[hughlomas]

Check out  "inconsistency of base64 encoding on http.get responses"  @ https://github.com/joyent/node/issues/3026