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#' Insert Underscores in Path
#'
#' A convenience wrapper to replace black spaces with underscores.
#'
#' @param text character vector or text copied to the clipboard. Default is to
#' read from the clipboard.
#' @param copy2clip logical. If \code{TRUE} attempts to copy the output to the
#' clipboard.
#' @return Returns a character vector every space replaced with an underscore.
#' @section Warning: Ligatures are assumed to be "fi", however, these elements
#' may be "ff", "fi", "fl", "ffi" or "ffl".
#' @export
#' @examples
#' US("bad path with spaces")
US <- function(text = "clipboard", copy2clip = TRUE){
if (Sys.info()["sysname"] != "Windows") {
writeClipboard <- NULL
}
if (text == "clipboard") {
if (Sys.info()["sysname"] == "Darwin") {
pcon <- pipe("pbpaste")
text <- paste(scan(pcon, what="character",
quiet=TRUE), collapse=" ")
close(pcon)
}
if (Sys.info()["sysname"] == "Windows") {
text <- paste(readClipboard(), collapse=" ")
}
if(!Sys.info()["sysname"] %in% c("Darwin", "Windows")) {
warning("not Windows or Darwin:
\b\b\b\b\b\b\b\bmay not be able to read from the clipboard")
}
}
text <- gsub("([\\?])([a-z])", "\\fi\\2", text)
ligs <- gregexpr("([\\?])([a-z])", text)[[1]]
nligs <- length(ligs)
if (ligs[1] > 0) {
plural <- ifelse(nligs > 1, "ligatures were", "ligature was")
warning(paste(ligs, plural, "found: \nCheck output!"))
}
und <- function(x) {
gsub("\\s+", "_", x)
}
x <- unlist(lapply(tolower(text), und))
if(copy2clip){
if (Sys.info()["sysname"] == "Windows") {
writeClipboard(x, format = 1)
}
if (Sys.info()["sysname"] == "Darwin") {
j <- pipe("pbcopy", "w")
writeLines(x, con = j)
close(j)
}
}
return(x)
}
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