General-purpose prompting utilities for R — prompt

A collection of interactive prompting functions that follow tidyverse patterns and use built-in R functions (utils::menu and readline) with cli for styling. All functions handle non-interactive sessions gracefully. Text input with validation

Usage

prompt_input(
  message,
  value = NULL,
  default = NULL,
  required = FALSE,
  validator = NULL,
  validator_message = "Invalid input"
)

Arguments

message: The prompt message to display
value: Current value - if not NULL/empty, returns it without prompting
default: Default value if user presses enter
required: Whether the field is required
validator: Function that returns TRUE for valid input
validator_message: Message to show when validation fails

Value

User input or default value