#' nsws_ls
#'
#' @param version_id character version id
#' @param ... extra arguments passed to list.files
#'
#' @export
#'
#' @examples \dontrun{
#' nsws_ls("1")
#' }
nsws_ls <- function(version_id, ...){
list.files(paste0(cache_path(), version_id),
pattern = "\\.txt$", ...)
}
#'@name nsws_ingest
#'@title Ingest flat files
#'@description Ingest data from component flat files
#'@param version_id character temp database version string
#'@param folder file.path to data folder. optional.
#'@param skip numeric vector of lines to skip on file read. optional.
#'@importFrom utils read.csv
#'@importFrom purrr map_df
#'@examples \dontrun{
#'nsws <- nsws:::nsws_ingest("1")
#'}
#'
nsws_ingest <- function(version_id, folder = NA, skip = NA){
# Set-up paths ####
flist <- nsws_ls(version_id = version_id,
full.names = TRUE, include.dirs = TRUE)
# Read data ####
if(all(is.na(skip))){
skip <- unlist(lapply(flist, function(x)
as.numeric(substr(
readLines(x)[5], 18, nchar(readLines(x)[5]))))) - 1
skip[7] <- 155
}
res <- lapply(seq_along(flist),
function(i) purrr::map_df(flist[i],
read.csv,
skip = skip[i],
stringAsFactors = FALSE))
names(res) <- gsub("*.txt", "", basename(flist))
res
}
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