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#' nes_ls
#'
#' @param folder file.path to NES data; pass cache_path() to use OS agnostic cache location specified by the rappdirs package.
#' @param ... extra arguments passed to list.files
#' @inheritParams nes_get
#'
#' @export
#'
#' @examples
#' nes_ls("1")
nes_ls <- function(version_id, folder = temp_path(), ...){
list.files(file.path(folder, version_id, "NES"),
pattern = "\\.csv$", ...)
}
#'@name nes_ingest
#'@title Ingest flat files
#'@description Ingest data from component flat files
#'@param version_id character nes version string
#'@param folder file.path to data folder. optional.
#'@param skip numeric vector of lines to skip on file read. optional.
#'@importFrom readr read_csv
#'@importFrom purrr map_df
#'@examples \dontrun{
#'nes_ingest("1")
#'}
#'
nes_ingest <- function(version_id, folder = NA, skip = NA){
# Set-up paths ####
flist <- nes_ls(version_id = version_id, folder = folder,
full.names = TRUE, include.dirs = TRUE)
# Read data ####
if(all(is.na(skip))){
skip <- rep(0, length(flist))
}
res <- lapply(seq_along(flist),
function(i) purrr::map_df(flist[i],
readr::read_csv,
skip = skip[i]))
names(res) <- gsub("*.csv", "", basename(flist))
res
}
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