suffix_extract
extract the suffix from domain names
domain names have suffixes - common endings that people can or could register domains under. This includes things like ".org", but also things like ".edu.co". A simple Top Level Domain list, as a result, probably won't cut it.
suffix_extract
takes the list of public suffixes,
as maintained by Mozilla (see suffix_dataset
) and
a vector of domain names, and produces a data.frame containing the
suffix that each domain uses, and the remaining fragment.
Usage
suffix_extract(domains, suffixes = NULL)
Arguments
- domains
a vector of damains, from
domain
orurl_parse
. Alternately, full URLs can be provided and will then be run throughdomain
internally.- suffixes
a dataset of suffixes. By default, this is NULL and the function relies on
suffix_dataset
. Optionally, if you want more updated suffix data, you can provide the result ofsuffix_refresh
for this parameter.
Value
a data.frame of four columns, "host" "subdomain", "domain" & "suffix". "host" is what was passed in. "subdomain" is the subdomain of the suffix. "domain" contains the part of the domain name that came before the matched suffix. "suffix" is, well, the suffix.
See Also
suffix_dataset
for the dataset of suffixes.
Examples
# NOT RUN {
# Using url_parse
domain_name <- url_parse("http://en.wikipedia.org")$domain
suffix_extract(domain_name)
# Using domain()
domain_name <- domain("http://en.wikipedia.org")
suffix_extract(domain_name)
# }
# NOT RUN {
#Relying on a fresh version of the suffix dataset
suffix_extract(domain("http://en.wikipedia.org"), suffix_refresh())
# }
# NOT RUN {
# }