func parseResponse(response *http.Response) (*imageserver.Image, error) {
if response.StatusCode != http.StatusOK {
return nil, &imageserver.ParamError{
Param: imageserver.SourceParam,
Message: fmt.Sprintf("http status code %d while downloading", response.StatusCode),
}
}
im := new(imageserver.Image)
contentType := response.Header.Get("Content-Type")
if contentType != "" {
matches := contentTypeRegexp.FindStringSubmatch(contentType)
if matches != nil && len(matches) == 2 {
im.Format = matches[1]
}
}
data, err := ioutil.ReadAll(response.Body)
if err != nil {
return nil, &imageserver.ParamError{
Param: imageserver.SourceParam,
Message: fmt.Sprintf("error while downloading: %s", err),
}
}
im.Data = data
return im, nil
}
