R/formatBytes.R

In humanFormat: Human-Friendly Formatting Functions

formatAnyBytes <- function(b, base, fmt, sizes) {
	e <- ifelse(b == 0, NA, floor(log(b, base)))
	suffix <- ifelse(b == 0, "", sizes[e + 1])
	prefix <- ifelse(b < base, b, sprintf(fmt, b/(base^floor(e))))
	paste(prefix, suffix, sep="")
}

formatIECBytes <- function(b, fmt="%.2f") {
	formatAnyBytes(b, 1024, fmt, c("", " KiB", " MiB", " GiB", " TiB",
                                   " PiB", " EiB", " ZiB", " YiB"))
}

formatSIBytes <- function(b, fmt="%.2f") {
	formatAnyBytes(b, 1000, fmt, c("", " KB", " MB", " GB", " TB",
                                   " PB", " EB", " ZB", " YB"))
}

formatBytes <- formatSIBytes