Beispiel #1
0
func UserImageHandler(ctx *app.Context) {
	if ImageHandler != nil {
		ImageHandler(ctx)
		return
	}
	id := ctx.IndexValue(0)
	format := ctx.IndexValue(1)
	if lower := strings.ToLower(format); lower != format {
		ctx.MustRedirectReverse(true, ImageHandlerName, id, lower)
		return
	}
	ctx.SetHeader("Content-Type", "image/"+format)
	httpserve.NeverExpires(ctx)
	bs := ctx.Blobstore()
	if err := bs.Serve(ctx, id, nil); err != nil {
		panic(err)
	}
}
Beispiel #2
0
func mightFetchImage(ctx *app.Context, url string, prevId string, prevFormat string, prevURL string) (string, string, string) {
	if url == prevURL {
		return prevId, prevFormat, prevURL
	}
	if url == "" {
		if prevId != "" {
			ctx.Blobstore().Remove(prevId)
		}
		return "", "", ""
	}
	id, format, err := getImage(ctx, url)
	if err != nil {
		// Keep previous
		return prevId, prevFormat, prevURL
	}
	if prevId != "" {
		ctx.Blobstore().Remove(prevId)
	}
	return id, format, url
}
Beispiel #3
0
func catFile(ctx *app.Context) {
	var id string
	ctx.MustParseIndexValue(0, &id)
	f, err := ctx.Blobstore().Open(id)
	if err != nil {
		panic(err)
	}
	defer f.Close()
	var meta bool
	ctx.ParseParamValue("meta", &meta)
	if meta {
		var m interface{}
		if err := f.GetMeta(&m); err != nil {
			panic(err)
		}
		fmt.Println(m)
	} else {
		io.Copy(os.Stdout, f)
	}
}
Beispiel #4
0
func defaultFetchImage(ctx *app.Context, url string) (string, string, error) {
	resp, err := httpclient.New(ctx).Get(url)
	if err != nil {
		return "", "", err
	}
	defer resp.Close()
	data, err := resp.ReadAll()
	if err != nil {
		return "", "", err
	}
	_, format, err := image.DecodeConfig(bytes.NewReader(data))
	if err != nil {
		return "", "", err
	}
	bs := ctx.Blobstore()
	id, err := bs.Store(data, nil)
	if err != nil {
		return "", "", err
	}
	return id, strings.ToLower(format), nil
}