Exiv2

            return;

        }

        // Todo: Convert to UTF-8 if necessary

        (*xmpData_)[to] = cv->comment();

        if (erase_) exifData_->erase(pos);

    }

        std::string outstr;

        EXV_ICONV_CONST char *inptr = const_cast<char *>(str.c_str());

        size_t inbytesleft = str.length();

        while (inbytesleft) {

            char outbuf[100];

            char *outptr = outbuf;

                              &inbytesleft,

                              &outptr,

                              &outbytesleft);

            if (rc == size_t(-1) && errno != E2BIG) {

#ifndef SUPPRESS_WARNINGS

                std::cerr << "Warning: iconv: "