feat: add input_hidden function (#492)

src/std/env.ab

@@ -64,8 +64,16 @@ pub fun is_command(command: Text): Bool {
 
 /// Creates a prompt and returns the value.
 pub fun input(prompt: Text): Text {
- unsafe $printf "\${nameof prompt}"$
- unsafe $read$
+ unsafe $read -p "\${nameof prompt}"$
+ return "\$REPLY"
+}
+
+/// Creates a prompt, hides any user input and returns the value.
+pub fun input_hidden(prompt: Text): Text {
+ unsafe {
+ $read -s -p "\${nameof prompt}"$
+ $echo "" >&2$
+ }
  return "\$REPLY"
 }
 

src/tests/stdlib/input.ab

@@ -1,7 +1,7 @@
 import * from "std/env"
 
 // Output
-// Please enter your name:Hello, Amber
+// Hello, Amber
 
 main {
  unsafe $echo "Amber" >> /tmp/test_input$

src/tests/stdlib/input_hidden.ab

@@ -0,0 +1,12 @@
+import * from "std/env"
+
+// Output
+// Hello, Amber
+
+main {
+ unsafe $echo "Amber" >> /tmp/test_input$
+ unsafe $exec 0< /tmp/test_input$
+ let name = input_hidden("Please enter your name:")
+ echo "Hello, " + name
+ unsafe $rm /tmp/test_input$
+}