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#' Read whitespace-separated columns into a tibble
#'
#' @description
#' `read_table()` is designed to read the type of textual
#' data where each column is separated by one (or more) columns of space.
#'
#' `read_table()` is like [read.table()], it allows any number of whitespace
#' characters between columns, and the lines can be of different lengths.
#'
#' `spec_table()` returns the column specifications rather than a data frame.
#'
#' @seealso [read_fwf()] to read fixed width files where each column
#' is not separated by whitespace. `read_fwf()` is also useful for reading
#' tabular data with non-standard formatting.
#' @inheritParams datasource
#' @inheritParams tokenizer_fwf
#' @inheritParams read_delim
#' @export
#' @examples
#' ws <- readr_example("whitespace-sample.txt")
#' writeLines(read_lines(ws))
#' read_table(ws)
#' @rdname read_table
#' @export
read_table <- function(file, col_names = TRUE, col_types = NULL,
locale = default_locale(), na = "NA", skip = 0,
n_max = Inf, guess_max = min(n_max, 1000),
progress = show_progress(), comment = "",
show_col_types = should_show_types(),
skip_empty_rows = TRUE) {
tokenizer <- tokenizer_ws(
na = na, comment = comment,
skip_empty_rows = skip_empty_rows
)
read_delimited(file, tokenizer,
col_names = col_names, col_types = col_types,
locale = locale, skip = skip, skip_empty_rows = skip_empty_rows,
skip_quote = FALSE, comment = comment, n_max = n_max, guess_max = guess_max, progress = progress,
show_col_types = show_col_types
)
}
#' Read whitespace-separated columns into a tibble
#'
#' @description
#' `r lifecycle::badge("deprecated")`
#'
#' This function is deprecated because we renamed it to [read_table()] and
#' removed the old `read_table` function, which was too strict for most cases
#' and was analogous to just using `read_fwf()`.
#' @keywords internal
#' @export
read_table2 <- function(file, col_names = TRUE, col_types = NULL,
locale = default_locale(), na = "NA", skip = 0,
n_max = Inf, guess_max = min(n_max, 1000),
progress = show_progress(), comment = "",
skip_empty_rows = TRUE) {
lifecycle::deprecate_soft("2.0.0", "read_table2()", "read_table()")
read_table(
file = file,
col_names = col_names,
col_types = col_types,
locale = locale,
na = na,
skip = skip,
n_max = n_max,
guess_max = guess_max,
progress = progress,
comment = comment,
skip_empty_rows = skip_empty_rows
)
}
#' @rdname spec_delim
#' @export
spec_table <- generate_spec_fun(read_table)
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