Struct CardRedactor 

pub struct CardRedactor;

Redact credit card numbers while preserving format.

Replaces all digits except the last 4 with asterisks, preserving any separators (spaces, dashes) in their original positions.

Card numbers with fewer than 13 digits are considered invalid.

use apollo_redaction::Redacted;
use apollo_redaction::strategy::CardRedactor;

fn card(input: &str) -> String {
    Redacted::<_, CardRedactor>::new(input).to_string()
}

assert_eq!(card("4242424242424242"), "************4242");
assert_eq!(card("4242-4242-4242-4242"), "****-****-****-4242");
assert_eq!(card("4242 4242 4242 4242"), "**** **** **** 4242");
assert_eq!(card("1234"), "[REDACTED: invalid card number]");

Trait Implementations

impl Clone for CardRedactor

fn clone(&self) -> CardRedactor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for CardRedactor

fn default() -> CardRedactor

Returns the “default value” for a type.

impl<T: AsRef<str>> RedactionStrategy<T> for CardRedactor

fn display(&self, value: &T, f: &mut Formatter<'_>) -> Result

How to redact the value for the Display ({}) implementation.

fn debug(&self, value: &T, f: &mut Formatter<'_>) -> Result

How to redact the value for the Debug ({:?}) implementation. By default, this delegates to RedactionStrategy::display.