iconv

Un wrapper c++ pour iconv:

#include 
using namespace std;

#include 
#include 

#define CODAGE_NATIF "ISO-8859-15"
#define CODAGE_XML   "UTF-8"

int ppIconv(const std::string &pSource, 
            const std::string &pFrom_charset, 
            const std::string &pTo_charset, 
                  std::string &pDestination) {

        int retour=0;
        char *s = (char *)pSource.c_str();
        iconv_t cd = iconv_open(pTo_charset.c_str(), pFrom_charset.c_str());
        if (cd != (iconv_t) (-1)) {
                size_t s_len = pSource.length();
                /* the maximum expansion when converting happens when converting
                   tscii to utf-8; each tscii char can become up to 4 unicode chars
                   and each one of those unicode chars can be 3 bytes long */
                size_t ptr_len = 4 * 3 * s_len;
                //alloca alloue sur la pile, la désallocation se fera
                //automatiquement au retour de ppIconv
                char *buf = (char *)alloca(ptr_len);
                char *ptr = buf;
                if ((iconv(cd, &s, &s_len, &ptr, &ptr_len)) != (size_t) (-1)) {
                        *ptr = 0;
                        pDestination = buf;
                        retour=true;
                }
                iconv_close(cd);
        }
        if(!retour)
            pDestination="";
        return retour;
}