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 handle.

curl_download(url, destfile, quiet = TRUE, mode = "wb",
  handle = new_handle())

Arguments

url

A character string naming the URL of a resource to be downloaded.

destfile

A character string with the name where the downloaded file is saved. Tilde-expansion is performed.

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

Value

Path of downloaded file (invisibly).

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.

Examples

# Download large file if (FALSE) { url <- "http://www2.census.gov/acs2011_5yr/pums/csv_pus.zip" tmp <- tempfile() curl_download(url, tmp) }