library(urltools)

urls <- c("foo://example.com:8042/over/there?name=ferret
          "urn:example:animal:ferret:nose",
          "jdbc:mysql://test_user:ouupppssss@localhost:3306/sakila?profileSQL=true",
          "ftp://ftp.is.co.za/rfc/rfc1808.txt",
          "http://www.ietf.org/rfc/rfc2396.txt
          "ldap://[2001:db8::7]/c=GB?objectClass=one&objectClass=two",
          "mailto:John.Doe@example.com",
          "news:comp.infosystems.www.servers.unix",
          "tel:+1-816-555-1212",
          "telnet://192.0.2.16:80/",
          "urn:oasis:names:specification:docbook:dtd:xml:4.1.2",
          "ssh://alice@example.com",
          "https://bob:pass@example.com/place",
          "http://example.com/?a=1&b=2+2&c=3&c=4&d=%65%6e%63%6F%64%65%64")

for (an_url in urls) {
    parsed <- url_parse(an_url)
    cat(an_url,"\n")
    for (idx in 1:ncol(parsed)) {
      if (!is.na(parsed[[idx]])) {
        cat(colnames(parsed)[[idx]],"\t:",parsed[[idx]],"\n")
      }
    }
    cat("\n")
}