func (driver *QiniuDriver) GetFile(key string, offset int64) (int64, io.ReadCloser, error) {
stat, err := driver.Stat(key)
if err != nil {
return 0, nil, err
}
key = strings.TrimLeft(key, "/")
domain := fmt.Sprintf("%s.qiniudn.com", driver.bucket)
baseUrl := rs.MakeBaseUrl(domain, key)
policy := rs.GetPolicy{}
downUrl := policy.MakeRequest(baseUrl, nil)
resp, err := http.Get(downUrl)
if err != nil {
return 0, nil, err
}
return stat.Size(), NewSkipReadCloser(resp.Body, offset), nil
}
// @gist downloadUrl
func downloadUrl(domain, key string) string {
baseUrl := rs.MakeBaseUrl(domain, key)
policy := rs.GetPolicy{}
return policy.MakeRequest(baseUrl, nil)
}