Nothing
humanReadable <- function(x, units="auto", standard=c("IEC", "SI", "Unix"),
digits=1, width=NULL, sep=" ",
justify = c("right", "left"))
{
## Setup
suffix.SI <- c("B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB")
suffix.IEC <- c("B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB")
suffix.Unix <- c("B" , "K", "M", "G", "T", "P", "E", "Z", "Y")
standard <- match.arg(standard)
if(length(justify) == 1)
justify <- c(justify, justify)
## Functions
.applyHuman <- function(x, base, suffix, digits, width, sep)
{
## Which suffix should we use?
n <- length(suffix)
i <- pmax(pmin(floor(log(x, base)), n-1),0)
if(!is.finite(i))
i <- 0
x <- x / base^i
## Formatting
if(is.null(width))
{
## the same formatting for all
x <- format(round(x=x, digits=digits), nsmall=digits)
}
else
{
## similar to ls, du, and df
lenX <- nchar(x)
if(lenX > width) {
digits <- pmax(width - nchar(round(x)) - 1, 0)
}
if(i == 0) digits <- 0
x <- round(x, digits=digits)
}
c(x, suffix[i+1])
}
## Work
if(any(x < 0)) stop("'x' must be positive")
if(standard == "SI")
{
suffix <- suffix.SI
base <- 10^3
}
else if (standard=="IEC")
{
suffix <- suffix.IEC
base <- 2^10
}
else # (standard=="Unix)
{
suffix <- suffix.Unix
base <- 2^10
}
if(!missing(units) && units=="bytes")
{
retval <- rbind(x, "bytes")
}
else if(!missing(units) && units!="auto")
{
units <- suffix[match(toupper(units), toupper(suffix))]
power <- match(units, suffix) -1
X <- x / (base^power)
X <- format.default(x=X, digits=digits, nsmall=digits)
retval <- rbind(X, rep(units, length(X)))
}
else
{
retval <- sapply(X=x, FUN=".applyHuman", base=base, suffix=suffix,
digits=digits, width=width, sep=sep)
}
if(all(justify == "none"))
{
paste(trim(retval[1,]), trim(retval[2,]), sep=sep)
}
else
{
paste(format(trim(retval[1,]), justify=justify[1]),
format(trim(retval[2,]), justify=justify[2]), sep=sep)
}
}
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