Extracts the userinfo component of a URL (user or user:password).
Arguments
- url
A character vector of URLs.
- protocol_handling
A character string specifying how to handle protocols. Defaults to "keep".
"keep": If a scheme exists (http, https, ftp, ftps), it's used. If no scheme, "http://" is added.
"none": If a scheme exists, it's used. If no scheme, then no scheme is used (scheme component will be NA).
"strip": Any existing scheme is removed (scheme component will be NA).
"http": The scheme is forced to be "http".
"https": The scheme is forced to be "https".