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imagegomultipart

Getting a multipart.File into image.Decode as argument

The contents of the multipart.File are as follows: "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD..."

I'm trying to get it into the Image.DecodeConfig() method like this:

import (
    "image"
    "image/jpeg"
    "io"
)

func ImgCheckSize(file io.Reader) (io.Reader, error) {
    config, format, err := image.DecodeConfig(file)
...

The error prints: "image: unknown format"

I've also printed out the multipart.FileHeader.Header which reads:

map[Content-Disposition:[form-data; name="img1"; filename="img1"] Content-Type:[application/octet-stream]]

Has anyone come across this before? Any useful suggestions would help! Many many thanks

Solution

  • Solved with the following package: "github.com/vincent-petithory/dataurl"

    for example:

    imgdecoded, _ := dataurl.Decode(imgupload)