Macro inquire::max_length

macro_rules! max_length {
    ($length:expr) => { ... };
    ($length:expr, $message:expr) => { ... };
}

Shorthand for the built-in MaxLengthValidator that checks whether the answer length is smaller than or equal to the specified threshold.

Arguments

• $length - Maximum length of the input.
• $message - optional - Error message returned by the validator. Defaults to “The length of the response should be at most $length”

Examples

use inquire::{max_length, validator::{StringValidator, Validation}};

let validator = max_length!(5);
assert_eq!(Validation::Valid, validator.validate("Good")?);
assert_eq!(Validation::Invalid("The length of the response should be at most 5".into()), validator.validate("Terrible")?);

let validator = max_length!(5, "Not too large!");
assert_eq!(Validation::Valid, validator.validate("Good")?);
assert_eq!(Validation::Invalid("Not too large!".into()), validator.validate("Terrible")?);