schwifty/
country_specific.rs

1use crate::country::Country;
2
3impl Country {
4    pub(crate) fn custom_validation(&self, input: &str) -> bool {
5        use Country::*;
6        match self {
7            Albania => {
8                let check_digit = self.check_digits(input);
9                let account_number = &input[4..=11];
10
11                let mut total = 0;
12                for (ch, w) in account_number.chars().zip([9, 7, 3, 1, 9, 7, 3, 1].iter()) {
13                    let ch = ch.to_digit(10).unwrap();
14                    total += ch * w;
15                }
16
17                total % 10 == check_digit
18            }
19            Belgium => {
20                let check_digits = self.check_digits(input) as u128;
21                let check_number: u128 = input[4..=13].parse().unwrap();
22                check_number % 97 == check_digits
23            }
24            CzechRepublic => {
25                let account_number = &input[14..];
26
27                let mut total = 0;
28                for (ch, w) in account_number
29                    .chars()
30                    .zip([6, 3, 7, 9, 10, 5, 8, 4, 2, 1].iter())
31                {
32                    let ch = ch.to_digit(10).unwrap();
33                    total += ch * w;
34                }
35
36                if total % 11 != 0 {
37                    return false;
38                }
39
40                let branch_number = &input[8..=13];
41                let mut total = 0;
42                for (ch, w) in branch_number.chars().zip([10, 5, 8, 4, 2, 1].iter()) {
43                    let ch = ch.to_digit(10).unwrap();
44                    total += ch * w;
45                }
46
47                total % 11 == 0
48            }
49            _ => true,
50        }
51    }
52
53    pub(crate) fn check_digits(&self, input: &str) -> u32 {
54        use Country::*;
55        let end = input.len() - 1;
56        let (start, stop) = match self {
57            Albania => (12, 12),
58            Belgium | Montenegro => (end - 1, end),
59            _ => unreachable!(),
60        };
61
62        input[start..=stop].parse().unwrap()
63    }
64}
schwifty/country_specific.rs

schwifty/
country_specific.rs
