62 lines
1.8 KiB
Go
62 lines
1.8 KiB
Go
package main
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import (
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"fmt"
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"strings"
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"strconv"
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"math/big"
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)
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var lCode = map[string]int {
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"AL": 28, "AD": 24, "AT": 20, "AZ": 28, "BE": 16, "BH": 22, "BA": 20, "BR": 29,
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"BG": 22, "CR": 21, "HR": 21, "CY": 28, "CZ": 24, "DK": 18, "DO": 28, "EE": 20,
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"FO": 18, "FI": 18, "FR": 27, "GE": 22, "DE": 22, "GI": 23, "GR": 27, "GL": 18,
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"GT": 28, "HU": 28, "IS": 26, "IE": 22, "IL": 23, "IT": 27, "KZ": 20, "KW": 30,
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"LV": 21, "LB": 28, "LI": 21, "LT": 20, "LU": 20, "MK": 19, "MT": 31, "MR": 27,
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"MU": 30, "MC": 27, "MD": 24, "ME": 22, "NL": 18, "NO": 15, "PK": 24, "PS": 29,
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"PL": 28, "PT": 25, "RO": 24, "SM": 27, "SA": 24, "RS": 22, "SK": 24, "SI": 19,
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"ES": 24, "SE": 24, "CH": 21, "TN": 24, "TR": 26, "AE": 23, "GB": 22, "VG": 24,
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}
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var sCode = map[string]int {
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"1": 1, "2": 2, "3": 3, "4": 4, "5": 5, "6": 6, "7": 7, "8": 8, "9": 9,
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"A": 10, "B": 11, "C": 12, "D": 13, "E": 14, "F": 15, "G": 16,
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"H": 17, "I": 18, "J": 19, "K": 20, "L": 21, "M": 22, "N": 23,
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"O": 24, "P": 25, "Q": 26, "R": 27, "S": 28, "T": 29, "U": 30,
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"V": 31, "W": 32, "X": 33, "Y": 34, "Z": 35,
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}
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func main() {
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var iban string
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var r, s, t, st []string
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u := new(big.Int)
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v := new(big.Int)
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w := new(big.Int)
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iban = "GB82 TEST 1234 5698 7654 32"
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r = strings.Split(iban, " ")
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s = strings.Split(r[0], "")
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t = strings.Split(r[1], "")
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st = []string{ strconv.Itoa(sCode[t[0]]),
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strconv.Itoa(sCode[t[1]]),
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strconv.Itoa(sCode[t[2]]),
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strconv.Itoa(sCode[t[3]]),
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strings.Join(r[2:6], ""),
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strconv.Itoa(sCode[s[0]]),
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strconv.Itoa(sCode[s[1]]),
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strings.Join(s[2:4], ""),
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}
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u.SetString(strings.Join(st, ""), 10)
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v.SetInt64(97)
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w.Mod(u, v)
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if w.Uint64() == 1 && lCode[strings.Join(s[0:2], "")] == len(strings.Join(r, "")) {
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fmt.Printf("IBAN %s looks good!\n", iban)
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} else {
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fmt.Printf("IBAN %s looks wrong!\n", iban)
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}
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}
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