#' Get data networks and their unique keys.
#'
#' Beware: It takes a while to retrieve the full list of providers - so
#' go get more coffee.
#'
#' @import RCurl XML
#' @param name data network name search string, by default searches all
#' data networks by defining name = ""
#' @param maxresults max number of results to return
#' @param url the base GBIF API url for the function (should be left to default)
#' @param ... optional additional curl options (debugging tools mostly)
#' @param curl If using in a loop, call getCurlHandle() first and pass
#' the returned value in here (avoids unnecessary footprint)
#' @export
#' @examples \dontrun{
#' # Test the function for a few networks
#' networks(maxresults=10)
#'
#' # All data providers
#' networks()
#' }
networks <- function(name = "", maxresults = NA,
url = "http://data.gbif.org/ws/rest/network/list",
...,
curl = getCurlHandle())
{
args <- list()
if(!is.na(name))
args$name <- name
if(!is.na(maxresults))
args$maxresults <- maxresults
out <- getForm(url,
.params = args,
...,
curl = curl)
tt <- xmlParse(out)
names_ <- xpathSApply(tt, "//gbif:resourceNetwork/gbif:name", xmlValue)
gbifkey <- xpathSApply(tt, "//gbif:resourceNetwork", xmlAttrs)[1,]
data.frame(names_, gbifkey)
}