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/**
* Copyright (C) 2014-2017 Philip Helger (www.helger.com)
* philip[at]helger[dot]com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.helger.masterdata.swift;
import java.time.LocalDate;
import java.util.List;
import java.util.regex.Pattern;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import com.helger.commons.CGlobal;
import com.helger.commons.ValueEnforcer;
import com.helger.commons.annotation.Nonempty;
import com.helger.commons.annotation.ReturnsMutableCopy;
import com.helger.commons.collection.impl.CommonsArrayList;
import com.helger.commons.collection.impl.ICommonsList;
import com.helger.commons.regex.RegExCache;
import com.helger.commons.regex.RegExHelper;
import com.helger.commons.string.StringHelper;
import com.helger.commons.string.StringParser;
import com.helger.commons.string.ToStringGenerator;
import com.helger.datetime.period.LocalDatePeriod;
/**
* The IBAN country data defines a list of elements that are contained within
* the IBAN number of that country.
*
* @author Philip Helger
*/
public final class IBANCountryData extends LocalDatePeriod
{
private final int m_nExpectedLength;
private final Pattern m_aPattern;
private final ICommonsList m_aElements;
private final String m_sFixedCheckDigits;
/**
* @param nExpectedLength
* The total expected length. Serves mainly as a checksum field to
* check whether the length of the passed fields matches.
* @param aPattern
* null or the RegEx pattern to valid values of this
* country.
* @param sFixedCheckDigits
* null or fixed check digits (of length 2)
* @param aValidFrom
* Validity start date. May be null.
* @param aValidTo
* Validity end date. May be null.
* @param aElements
* The IBAN elements for this country. May not be null.
*/
public IBANCountryData (@Nonnegative final int nExpectedLength,
@Nullable final Pattern aPattern,
@Nullable final String sFixedCheckDigits,
@Nullable final LocalDate aValidFrom,
@Nullable final LocalDate aValidTo,
@Nonnull final List aElements)
{
super (aValidFrom, aValidTo);
ValueEnforcer.notNull (aElements, "Elements");
if (sFixedCheckDigits != null)
{
ValueEnforcer.isTrue (sFixedCheckDigits.length () == 2, "Check digits must be length 2!");
ValueEnforcer.isTrue (StringParser.isUnsignedInt (sFixedCheckDigits), "Check digits must be all numeric!");
}
m_nExpectedLength = nExpectedLength;
m_aPattern = aPattern;
m_aElements = new CommonsArrayList<> (aElements);
m_sFixedCheckDigits = sFixedCheckDigits;
int nCalcedLength = 0;
for (final IBANElement aChar : aElements)
nCalcedLength += aChar.getLength ();
if (nCalcedLength != nExpectedLength)
throw new IllegalArgumentException ("Expected length=" + nExpectedLength + "; calced length=" + nCalcedLength);
}
/**
* @return The length the complete IBAN string needs to have (incl. country
* code)
*/
@Nonnegative
public int getExpectedLength ()
{
return m_nExpectedLength;
}
public boolean hasPattern ()
{
return m_aPattern != null;
}
@Nullable
public Pattern getPattern ()
{
return m_aPattern;
}
public boolean matchesPattern (@Nonnull final String sIBAN)
{
if (m_aPattern == null)
return true;
return m_aPattern.matcher (sIBAN).matches ();
}
/**
* @return An list of all IBAN elements for this country.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllElements ()
{
return m_aElements.getClone ();
}
public boolean hasFixedCheckDigits ()
{
return m_sFixedCheckDigits != null;
}
@Nullable
public String getFixedCheckDigits ()
{
return m_sFixedCheckDigits;
}
/**
* Parse a given IBAN number string and convert it to elements according to
* this country's definition of IBAN numbers.
*
* @param sIBAN
* The IBAN number string to parse. May not be null.
* @return The list of parsed elements.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList parseToElementValues (@Nonnull final String sIBAN)
{
ValueEnforcer.notNull (sIBAN, "IBANString");
final String sRealIBAN = IBANManager.unifyIBAN (sIBAN);
if (sRealIBAN.length () != m_nExpectedLength)
throw new IllegalArgumentException ("Passed IBAN has an invalid length. Expected " +
m_nExpectedLength +
" but found " +
sRealIBAN.length ());
final ICommonsList ret = new CommonsArrayList<> (m_aElements.size ());
int nIndex = 0;
for (final IBANElement aElement : m_aElements)
{
final String sIBANPart = sRealIBAN.substring (nIndex, nIndex + aElement.getLength ());
ret.add (new IBANElementValue (aElement, sIBANPart));
nIndex += aElement.getLength ();
}
return ret;
}
@Override
public String toString ()
{
return new ToStringGenerator (this).append ("elements", m_aElements)
.append ("expectedLength", m_nExpectedLength)
.getToString ();
}
@Nonnull
@ReturnsMutableCopy
private static ICommonsList _parseElements (@Nonnull final String sDesc)
{
final ICommonsList aList = new CommonsArrayList<> ();
// Always starts with the country code
aList.add (new IBANElement (EIBANElementType.COUNTRY_CODE, 2));
EIBANElementType eLastCharType = null;
int nLastLength = 0;
final int len = sDesc.length ();
for (int i = 2; i < len; ++i)
{
final char c = sDesc.charAt (i);
// ignore all whitespaces
if (Character.isWhitespace (c))
continue;
// resolve current character to an element type
final EIBANElementType eCharType = EIBANElementType.getElementTypeFromChar (c);
if (eCharType == null)
throw new IllegalArgumentException ("Illegal char '" + c + "' in description '" + sDesc + "'");
if (eLastCharType == null || eLastCharType == eCharType)
{
// first group, or same as before
eLastCharType = eCharType;
nLastLength++;
}
else
{
// new group
aList.add (new IBANElement (eLastCharType, nLastLength));
eLastCharType = eCharType;
nLastLength = 1;
}
}
// add rest
if (nLastLength > 0)
aList.add (new IBANElement (eLastCharType, nLastLength));
return aList;
}
@Nullable
private static Pattern _parseLayout (@Nonnull @Nonempty final String sCountryCode,
@Nonnegative final int nExpectedLength,
@Nullable final String sFixedCheckDigits,
@Nullable final String sLayout)
{
// E.g. Burkina Faso has no layout
if (sLayout == null)
return null;
final StringBuilder aRegEx = new StringBuilder ();
// Always start with country code
// Depending on fixed check digits or not different check
if (sFixedCheckDigits != null)
aRegEx.append (Pattern.quote (sCountryCode + sFixedCheckDigits));
else
{
aRegEx.append (Pattern.quote (sCountryCode));
aRegEx.append ("[0-9]{2}");
}
int nLen = 4;
for (final String sPart : StringHelper.getExploded (',', sLayout))
{
final String [] aParts = RegExHelper.getAllMatchingGroupValues ("([0-9]+)([anc])", sPart);
if (aParts.length != 2)
throw new IllegalArgumentException ("Failed to parse layout part '" + sPart + "'");
final int nPartLen = StringParser.parseInt (aParts[0], CGlobal.ILLEGAL_UINT);
if (nPartLen <= 0)
throw new IllegalArgumentException ("Failed to parse layout part '" + sPart + "' - illegal numeric value");
nLen += nPartLen;
if (aParts[1].length () != 1)
throw new IllegalArgumentException ("Failed to parse layout part '" + sPart + "' - type length is invalid");
final char cType = aParts[1].charAt (0);
if (cType == 'a')
aRegEx.append ("[A-Z]{" + nPartLen + "}");
else
if (cType == 'n')
aRegEx.append ("[0-9]{" + nPartLen + "}");
else
if (cType == 'c')
aRegEx.append ("[a-zA-Z0-9]{" + nPartLen + "}");
else
throw new IllegalArgumentException ("Failed to parse layout part '" + sPart + "' - type is invalid");
}
if (nLen != nExpectedLength)
throw new IllegalArgumentException ("Failed to parse layout - length mismatch. Having " +
nLen +
" but expected " +
nExpectedLength);
return RegExCache.getPattern (aRegEx.toString ());
}
/**
* This method is used to create an instance of this class from a string
* representation.
*
* @param sCountryCode
* Country code to use. Neither null nor empty.
* @param nExpectedLength
* The expected length having only validation purpose.
* @param sLayout
* null or the layout descriptor
* @param sFixedCheckDigits
* null or fixed check digits (of length 2)
* @param aValidFrom
* Validity start date. May be null.
* @param aValidTo
* Validity end date. May be null.
* @param sDesc
* The string description of this country data. May not be
* null.
* @return The parsed county data.
*/
@Nonnull
public static IBANCountryData createFromString (@Nonnull @Nonempty final String sCountryCode,
@Nonnegative final int nExpectedLength,
@Nullable final String sLayout,
@Nullable final String sFixedCheckDigits,
@Nullable final LocalDate aValidFrom,
@Nullable final LocalDate aValidTo,
@Nonnull final String sDesc)
{
ValueEnforcer.notEmpty (sDesc, "Desc");
if (sDesc.length () < 4)
throw new IllegalArgumentException ("Cannot converted passed string because it is too short!");
final ICommonsList aList = _parseElements (sDesc);
final Pattern aPattern = _parseLayout (sCountryCode, nExpectedLength, sFixedCheckDigits, sLayout);
// And we're done
try
{
return new IBANCountryData (nExpectedLength, aPattern, sFixedCheckDigits, aValidFrom, aValidTo, aList);
}
catch (final IllegalArgumentException ex)
{
throw new IllegalArgumentException ("Failed to parse '" + sDesc + "': " + ex.getMessage ());
}
}
}
