image: Decode unknown format on jpeg (forgot to import "image/jpeg")

[gopherbot]

by franklin@krave-n.com:

Below is a test program that illustrates the problem if applied against the attached
jpeg.

_, _, err := image.Decode(rdr)

"error image: unknown format"


---------------------------
package main

import (
    "bufio"
    "fmt"
    "image"
    "net/http"
    "os"
)

func main() {
    file, _ := os.Open("tryme.jpeg")
    defer file.Close()
    rdr := bufio.NewReader(file)
    bts, _ := rdr.Peek(512)
    contentType := http.DetectContentType(bts)
    fmt.Println(contentType)
    _, _, err := image.Decode(rdr)
    if err != nil {
        fmt.Println("error " + err.Error())

    }
    fmt.Println("done")
}

Attachments:

1. tryme.jpeg (2594 bytes)

[gopherbot]

Comment 1 by franklin@krave-n.com:

You can see info about this jpeg here:
http://regex.info/exif.cgi?imgurl=https%3A%2F%2Fencrypted-tbn3.gstatic.com%2Fimages%3Fq%3Dtbn%3AANd9GcSWwc-mQL6CEsjhYIgeVlWaWrd4rTF_SuqgWx5cDO0tk95Tl4LTVrBeaPOu

[minux]

Comment 2:

You forgot to add
import _ "image/jpeg"
the image package itself doesn't know how to decode jpeg, you need to
import image/jpeg to register the jpeg decoder.

Labels changed: added repo-main.

Status changed to WorkingAsIntended.

[gopherbot]

Comment 3 by franklin@krave-n.com:

Ok, yes, you are correct.