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IBAN (view source)

Revision as of 19:18, 18 February 2020

160 bytes removed ,  4 years ago
→‎{{header|C++}}: format the code in a more common way
(→‎{{header|C++}}: format the code in a more common way)
Line 655:
#include <algorithm>
#include <cctype>
using namespace boost::algorithm ;
 
using namespace boost::algorithm;
bool isValid ( const std::string &ibanstring )
{
static std::map<std::string, int> countrycodes
{ {"AL" , 28} , {"AD" , 24} , {"AT" , 20} , {"AZ" , 28 } ,
{"BE" , 16} , {"BH" , 22} , {"BA" , 20} , {"BR" , 29 } ,
{"BG" , 22} , {"CR" , 21} , {"HR" , 21} , {"CY" , 28 } ,
{"CZ" , 24} , {"DK" , 18} , {"DO" , 28} , {"EE" , 20 } ,
{"FO" , 18} , {"FI" , 18} , {"FR" , 27} , {"GE" , 22 } ,
{"DE" , 22} , {"GI" , 23} , {"GR" , 27} , {"GL" , 18 } ,
{"GT" , 28} , {"HU" , 28} , {"IS" , 26} , {"IE" , 22 } ,
{"IL" , 23} , {"IT" , 27} , {"KZ" , 20} , {"KW" , 30 } ,
{"LV" , 21} , {"LB" , 28} , {"LI" , 21} , {"LT" , 20 } ,
{"LU" , 20} , {"MK" , 19} , {"MT" , 31} , {"MR" , 27 } ,
{"MU" , 30} , {"MC" , 27} , {"MD" , 24} , {"ME" , 22 } ,
{"NL" , 18} , {"NO" , 15} , {"PK" , 24} , {"PS" , 29 } ,
{"PL" , 28} , {"PT" , 25} , {"RO" , 24} , {"SM" , 27 } ,
{"SA" , 24} , {"RS" , 22} , {"SK" , 24} , {"SI" , 19 } ,
{"ES" , 24} , {"SE" , 24} , {"CH" , 21} , {"TN" , 24 } ,
{"TR" , 26} , {"AE" , 23} , {"GB" , 22} , {"VG" , 24 } } ;
std::string teststring( ibanstring ) ;
erase_all( teststring , " " ) ; //defined in boost/algorithm/string.hpp
if ( countrycodes.find( teststring.substr(0 , 2 )) == countrycodes.end( ) )
return false ;
if ( teststring.length( ) != countrycodes[ teststring.substr( 0 , 2 ) ] )
return false ;
if (!all(teststring, is_alnum()))
return false ;
to_upper( teststring ) ;
std::rotate(teststring.begin(), teststring.begin() + 4, teststring.end());
 
bool isValid(const std::string &ibanstring) {
std::string numberstring ;//will contain the letter substitutions
static std::map<std::string, int> countrycodes {
for (const auto& c : teststring)
{"AL", 28}, {"AD", 24}, {"AT", 20}, {"AZ", 28 },
{
{"BE", 16}, {"BH", 22}, {"BA", 20}, {"BR", 29 },
if (std::isdigit(c))
{"BG", 22}, {"CR", 21}, {"HR", 21}, {"CY", 28 },
numberstring += c ;
{"CZ", 24}, {"DK", 18}, {"DO", 28}, {"EE", 20 },
if (std::isupper(c))
{"FO", 18}, {"FI", 18}, {"FR", 27}, {"GE", 22 },
numberstring += std::to_string(static_cast<int>(c) - 55);
{"DE", 22}, {"GI", 23}, {"GR", 27}, {"GL", 18 },
}
{"GT", 28}, {"HU", 28}, {"IS", 26}, {"IE", 22 },
//implements a stepwise check for mod 97 in chunks of 9 at the first time
{"IL", 23}, {"IT", 27}, {"KZ", 20}, {"KW", 30 },
// , then in chunks of seven prepended by the last mod 97 operation converted
{"LV", 21}, {"LB", 28}, {"LI", 21}, {"LT", 20 },
//to a string
{"LU", 20}, {"MK", 19}, {"MT", 31}, {"MR", 27 },
int segstart = 0 ;
{"MU", 30}, {"MC", 27}, {"MD", 24}, {"ME", 22 },
int step = 9 ;
{"NL", 18}, {"NO", 15}, {"PK", 24}, {"PS", 29 },
std::string prepended ;
{"PL", 28}, {"PT", 25}, {"RO", 24}, {"SM", 27 },
long number = 0 ;
{"SA", 24}, {"RS", 22}, {"SK", 24}, {"SI", 19 },
while ( segstart < numberstring.length( ) - step ) {
{"ES", 24}, {"SE", 24}, {"CH", 21}, {"TN", 24 },
number = std::stol( prepended + numberstring.substr( segstart , step ) ) ;
{"TR", 26}, {"AE", 23}, {"GB", 22}, {"VG", 24 }
int remainder = number % 97 ;
};
prepended = std::to_string( remainder ) ;
std::string teststring(ibanstring);
if ( remainder < 10 )
erase_all(teststring, " "); //defined in boost/algorithm/string.hpp
prepended = "0" + prepended ;
if (countrycodes.find(teststring.substr(0, 2)) == countrycodes.end())
segstart = segstart + step ;
step = 7return false;
if (teststring.length() != countrycodes[teststring.substr(0, 2)])
}
return false;
number = std::stol( prepended + numberstring.substr( segstart )) ;
if (!all(teststring, is_alnum()))
return ( number % 97 == 1 ) ;
return false;
to_upper(teststring);
std::rotate(teststring.begin(), teststring.begin() + 4, teststring.end());
 
std::string numberstring; // will contain the letter substitutions
for (const auto &c : teststring) {
if (std::isdigit(c))
numberstring += c;
if (std::isupper(c))
numberstring += std::to_string(static_cast<int>(c) - 55);
}
// implements a stepwise check for mod 97 in chunks of 9 at the first time,
// then in chunks of seven prepended by the last mod 97 operation converted
// to a string
int segstart = 0;
int step = 9;
std::string prepended;
long number = 0;
while (segstart < numberstring.length() - step) {
number = std::stol(prepended + numberstring.substr(segstart, step));
int remainder = number % 97;
prepended = std::to_string(remainder);
if (remainder < 10)
prepended = "0" + prepended;
segstart = segstart + step;
step = 7;
}
number = std::stol(prepended + numberstring.substr(segstart));
return (number % 97 == 1);
}
 
void SayValidity(const std::string& &iban) {
{
std::cout << iban << (isValid(iban) ? " is " : " is not ") << "valid\n";
}
 
int main( ) {
SayValidity("GB82 WEST 1234 5698 7654 32");
{
SayValidity("GB82 WEST 1234 5698 7654 32GB82TEST12345698765432");
return 0;
SayValidity("GB82TEST12345698765432");
return 0 ;
}</lang>{{out}}
GB82 WEST 1234 5698 7654 32 is valid!
Retrieved from "https://rosettacode.org/wiki/Special:MobileDiff/228501"