Function for detecting the script that's being run

thisfile.R

# This script can be sourced from RStudio, or run with Rscript.

# Returns the file currently being sourced or run with Rscript
this_file <- function() {
  cmdArgs <- commandArgs(trailingOnly = FALSE)
  needle <- "--file="
  match <- grep(needle, cmdArgs)
  if (length(match) > 0) {
    # Rscript
    return(normalizePath(sub(needle, "", cmdArgs[match])))
  } else {
    # 'source'd via R console
    return(normalizePath(sys.frames()[[1]]$ofile))
  }
}