stRoke/R/add_padding.R

44 lines
1.0 KiB
R

#' MOVED Add padding to string
#'
#' @param d vector of strings or numbers
#' @param length final string length
#' @param after if padding should be added after as opposed to default before
#' @param pad padding string of length 1
#' @param lead leading string for all. Number or character vector. Cycled.
#' @param tail tailing string for all. Number or character vector. Cycled.
#'
#' @return vector or character strings of same length.
#' @export
#'
#' @examples
#' add_padding(sample(1:200,5),tail="AA",lead=c(2,3,"e"))
add_padding <- function(d,length=NULL,after=FALSE,pad="0",lead=NULL,tail=NULL){
if (!is.vector(d)) {
stop("Please supply vector")
}
if (nchar(pad)!=1) {
stop("Padding value should be just a single character or digit")
}
ns <- nchar(d)
if (is.null(length)){
l <- max(ns)
} else {
l <- length
}
ps <- unlist(lapply(l-ns,function(i){
paste(rep(pad,i),collapse="")}))
if (after) {
out <- paste0(d,ps)
} else {
out <- paste0(ps,d)
}
paste0(lead,out,tail)
}