input_prompt is not working inside functions

[gbourant]

I try to run the input_prompt inside a function and it's not working. When I run this script directly, it doesn't ever show or ask for a prompt, but the echo "name: {name}" prints name: if [ $(.

#!/usr/bin/env amber

import { input_prompt } from "std/env"

fun installer() {
    const name = input_prompt("Please enter your name:");
    echo "name: {name}"
}

main (args) {
    installer()
}

[gbourant]

I tried the given example and it works. Something else is happening.

After I have compiled the above script, I use it as follows curl 'URL-TO-TRANSPILED-BASH-SCRIPT' | bash. So the input_prompt is not working when the script is passed as piped to the bash command.

If I download the script and then execute bash downloaded-script.sh the prompt works.

[gbourant]

relative: https://stackoverflow.com/a/61840469

[gbourant]

I was able to read via the curl | bash with const name = trust $ name=\$(bash -c 'read -p "Input Your Name: " name && echo \$name' < /dev/tty); echo \$name $

[Mte90]

So just to understand it is an issue with the stdlib or it is the way you used that function?

amber/src/std/env.ab

Line 66 in d3ceda3

pub fun input_prompt(prompt: Text): Text {

This is the bash code we have right now maybe we can improve it to cover also this edge case

[gbourant]

Assume you have the following amber-lang archlinux.ab script.

#!/usr/bin/env amber

import { input_prompt } from "std/env"

const name = input_prompt("Please enter your name:");
echo "name: {name}"

If run it via amber run archlinux.ab everything works, it will ask you the prompt "Please enter your name"

Now build the archlinux.ab via amber build archlinux.ab and it will produce the archlinux.sh

If you run the archlinux.sh, everything still works as expected.

Now if you try to run the bash script via cat archlinux.sh | bash, it won't ask you for the prompt.

It has something to do with the tty and the pipe (not sure what) but I was able to read user input when I'm using a pipe via const name = trust $ name=\$(bash -c 'read -p "Input Your Name: " name && echo \$name' < /dev/tty); echo \$name $

[gbourant]

Alright, I changed the method that you pointed by adding < /dev/tty and it works.

fun my_print(prompt: Text): Text {
    trust $ read -p "\${nameof prompt}" < /dev/tty $
    return "\$REPLY"
}