Util for validating GIF resources.

gifURIContentValidator.go

package main

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

func decodeGIF(url string) (*gif.GIF, error) {
	res, err := http.Get(url)
	if err != nil {
		return nil, err
	}

	if res.Close && res.Body != nil {
		defer res.Body.Close()
	}

	return gif.DecodeAll(res.Body)
}

func main() {
	urls := []string{"http://i.imgur.com/WWfGR9l.gif"}
	if len(os.Args) >= 2 {
		urls = os.Args[1:]
	}

	for _, url := range urls {
		_, err := decodeGIF(url)
		if err != nil {
			fmt.Fprintf(os.Stderr, "%s gif decoding failed with err %v\n", url, err)
		}
	}
}