nexml_env = new.env(hash=TRUE)
# If no prefix is given, will use a UUID
# Generates an id number by appending a counter to the prefix
# Will keep track of the counter for each prefix for that session.
#' @import uuid
nexml_id <- function(prefix = "",
use_uuid = getOption("uuid", FALSE)){
if(use_uuid){
uid <- paste0("uuid-", UUIDgenerate())
} else {
if((prefix %in% ls(envir=nexml_env)))
id_counter <- get(prefix, envir=nexml_env)
else {
assign(prefix, 1, envir=nexml_env)
id_counter <- 1
}
uid <- paste0(prefix, id_counter)
id_counter <- id_counter + 1
assign(prefix, id_counter, envir=nexml_env)
}
uid
}
#' reset id counter
#'
#' reset the id counter
#' @export
reset_id_counter <- function(){
rm(list=ls(envir=nexml_env), envir=nexml_env)
}
# use an environment to store counter
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