Libcurl implementation of C_download (the "internal" download method)
with added support for https, ftps, gzip, etc. Default behavior is identical
to download.file(), but request can be fully configured by passing
a custom curl::handle().
A character string naming the URL of a resource to be downloaded.
file
A character string with the name where the downloaded file is
saved.
quiet
If TRUE, suppress status messages (if any), and the
progress bar.
mode
A character string specifying the mode with which to write the file.
Useful values are "w", "wb" (binary), "a" (append)
and "ab".
handle
a curl handle object
Details
The main difference between curl_download and curl_fetch_disk
is that curl_download checks the http status code before starting the
download, and raises an error when status is non-successful. The behavior of
curl_fetch_disk on the other hand is to proceed as normal and write
the error page to disk in case of a non success response.