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Get URL schemes

Source: R/accessors.R
get_scheme.Rd

Extracts the scheme (protocol) of a URL.

Usage

get_scheme(url, protocol_handling = "keep", scheme_relative_handling = "keep")

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".

scheme_relative_handling

How to handle URLs starting with "//". Defaults to "keep".

  • "keep": Parse using http but return scheme as NA and set status to "ok-scheme-relative".

  • "http": Assume http for parsing and output.

  • "https": Assume https for parsing and output.

  • "error": Treat scheme-relative URLs as invalid.

Value

A character vector of URL schemes.

Examples

get_scheme("https://example.com")
#> https://example.com 
#>             "https"