Nothing
read.fwf2 <- function(file, widths, header = FALSE, sep = "\t", skip = 0, n = -1, quote = "", stringsAsFactors = FALSE, ...) {
doone <- function(x) {
x <- substring(x, first, last)
x[!nzchar(x)] <- NA_character_
paste0(x, collapse = sep)
}
if (is.list(widths)) {
recordlength <- length(widths)
widths <- do.call("c", widths)
} else {
recordlength <- 1L
}
drop <- (widths < 0L)
widths <- abs(widths)
if (is.character(file)) {
file <- file(file, "rt")
on.exit(close(file), add = TRUE)
} else if (!isOpen(file)) {
open(file, "rt")
on.exit(close(file), add = TRUE)
}
if (skip) {
readLines(file, n = skip)
}
if (header) {
headerline <- readLines(file, n = 1L)
text[1] <- headerline
}
raw <- readLines(file, n = n)
nread <- length(raw)
if (recordlength > 1L && nread %% recordlength) {
raw <- raw[1L:(nread - nread %% recordlength)]
warning(sprintf(
ngettext(
nread %% recordlength, "last record incomplete, %d line discarded",
"last record incomplete, %d lines discarded"
),
nread %% recordlength
), domain = NA)
}
if (recordlength > 1L) {
raw <- matrix(raw, nrow = recordlength)
raw <- apply(raw, 2L, paste, collapse = "")
}
st <- c(1L, 1L + cumsum(widths))
first <- st[-length(st)][!drop]
last <- cumsum(widths)[!drop]
if (header) {
text <- c(headerline, vapply(raw, doone, character(1)))
} else {
text <- vapply(raw, doone, character(1))
}
.docall(utils::read.table, ..., args = list(text = text, header = header, sep = sep, quote = quote, stringsAsFactors = stringsAsFactors))
}
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