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)
}
}
// Handler returns an http.handlerFunc which serves the assets from this
// Manager. To avoid circular imports, this function returns an http.HandlerFunc
// rather than a gnd.la/app.Handler. To obtain a gnd.la/app.Handler use
// gnd.la/app.HandlerFromHTTPFunc.
func (m *Manager) Handler() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
p := m.Path(r.URL)
f, err := m.Load(p)
if err != nil {
log.Warningf("error serving %s: %s", r.URL, err)
return
}
seeker, err := Seeker(f)
if err != nil {
log.Warningf("error serving %s: %s", r.URL, err)
return
}
var modtime time.Time
if st, err := m.VFS().Stat(p); err == nil {
modtime = st.ModTime()
}
if r.URL.RawQuery != "" {
httpserve.NeverExpires(w)
}
http.ServeContent(w, r, r.URL.Path, modtime, seeker)
f.Close()
}
}