45 lines
1.5 KiB
Scala
45 lines
1.5 KiB
Scala
import scala.collection.immutable.SortedMap
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class Iban(val iban: String) {
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// Isolated tests
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def isAllUpperCase = iban.toUpperCase == iban
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def isValidpattern = (Iban.pattern findFirstIn iban).nonEmpty
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def isNationalSize = {
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Iban.ccVsLength.getOrElse(iban.take(2), 0) == iban.size
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}
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def isCheckNumberOK = {
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def rearrange = (iban.drop(4) + iban.take(4)). // Move left country code part to end
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// continue with each char converted to Int
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map(ch => if (ch.isDigit) ch.toInt - '0' else ch - 'A' + 10).mkString
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(BigInt(rearrange) mod 97) == 1
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}
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def isValidIban = {
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isAllUpperCase &&
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isValidpattern &&
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isNationalSize &&
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isCheckNumberOK
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}
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}
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object Iban {
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// IBAN length database
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lazy val ccVsLength: SortedMap[String, Int] = SortedMap[String, Int]() ++
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"""AD24 AE23 AL28 AO25 AT20 AZ28 BA20 BE16 BF27 BG22 BH22 BI16
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|BJ28 BR29 CG27 CH21 CI28 CM27 CR21 CV25 CY28 CZ24 DE22 DK18
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|DO28 DZ24 EE20 EG27 ES24 FI18 FO18 FR27 GA27 GB22 GE22 GI23
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|GL18 GR27 GT28 HR21 HU28 IE22 IL23 IR26 IS26 IT27 JO30 KW30
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|KZ20 LB28 LI21 LT20 LU20 LV21 MC27 MD24 ME22 MG27 MK19 ML28
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|MR27 MT31 MU30 MZ25 NL18 NO15 PK24 PL28 PS29 PT25 QA29 RO24
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|RS22 SA24 SE24 SI19 SK24 SM27 SN28 TN24 TR26 UA29 VG24""".
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stripMargin.replaceAll( """\s""", " ").split(' ').
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map(v => (v.take(2), if (v.isEmpty) 0 else v.slice(2, 4).toInt))
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lazy val pattern = "([A-Z]{2})([0-9]{2})([A-Z0-9]{4})([A-Z0-9]{0,2})([0-9]{7})(([A-Z0-9]?){0,16})".r
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def apply(s: String) = new Iban(s.replaceAll( """\s""", ""))
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}
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