money_get.cpp

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#include <locale>     // for locale, money_get, use_facet
#include <sstream>    // for istringstream
#include <iostream>   // for cout, endl
#include <iterator>   // for istreambuf_iterator
 
#include <examples.h>
 
 
// hardcode the name of the English US locale for known systems
#if defined (__FreeBSD__) || defined (__osf__)
// FreeBSD and Tru64 UNIX
const char en_US[] = "en_US.ISO8859-1";
#elif defined (__hpux)
// HP-UX
const char en_US[] = "en_US.iso88591";
// Windows
#elif defined (_WIN32)
const char en_US[] = "English";
#else
// AIX, IRIX, Linux, Solaris
const char en_US[] = "en_US";
#endif
 
 
int main (int argc, char *argv[])
{
    // Get the monetary string and locale from the argument vector.
    const char* const buffer  = 1 < argc ? argv [1] : "$1,234.6789";
    const char* const locname = 2 < argc ? argv [2] : en_US;
    const bool        intl    = 3 < argc;
 
    std::string smon;
    long double fmon = 0.0;
 
    std::ios_base::iostate state = std::ios_base::goodbit;
 
    // Retrieve the money_get facet from the named locale.
    const std::locale loc (locname);
 
    typedef std::istreambuf_iterator<char> Iter;
    typedef std::money_get<char, Iter>     MoneyGet;
 
    const MoneyGet &mgf = std::use_facet<MoneyGet>(loc);
 
    {
        // Build an istringstream object from the buffer
        // and imbue the locale in it.
        std::istringstream ins (buffer);
        ins.imbue (loc);
 
        // Get a string representation of the monetary value.
        mgf.get (ins, Iter (), intl, ins, state, smon);
    }
    {
        std::istringstream ins (buffer);
        ins.imbue (loc);
 
        // Get a floating point representation of the monetary value.
        mgf.get (ins, Iter (), intl, ins, state, fmon);
    }
 
    // Output the original sequence and its string and floating point
    // representations.
    std::cout << buffer << " --> \"" << smon << "\" --> " << fmon << '\n';
 
    // Return 0 on success, non-zero on failure.
    return !(std::ios_base::eofbit == state);
}