When prompting the user for a password, we need to temporarily disable
echo. In a tty we can call posix stty -echo (example below). The
RStudio GUI has a native password entry function that can be triggered
via getOption('askpass'). Is there simple method to prompt for a
password in the R for Mac GUI (without depending on shiny or tcltk)?
readline_password <- function(prompt = "Please enter password\n"){
if(isatty(stdin())){
if(system('stty -echo') == 0){
on.exit(system('stty echo'))
}
}
base::readline(prompt)
}
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