Function check_utf_bom

lib_acl_cpp/src/stdlib/internal/win_iconv.cpp:1099–1118

}

static void
check_utf_bom(rec_iconv_t *cd, ushort *wbuf, int *wbufsize)
{
    /* If we have a BOM, trust it, despite what the caller said */
    if (wbuf[0] == 0xFFFE && (cd->from.flags & FLAG_USE_BOM_ENDIAN))
    {
        /* swap endian: 1200 <-> 1201 or 12000 <-> 12001 */
        cd->from.codepage ^= 1;
        cd->from.mode |= UNICODE_MODE_SWAPPED;
        wbuf[0] = 0xFEFF;
    }

    /*
     * Remove BOM.
     * Don't do this if "to" is Unicode,
     * except if "to" is UTF-8.
     */
    if (wbuf[0] == 0xFEFF && (!is_unicode(cd->to.codepage) || cd->to.codepage == 65001))
        *wbufsize = 0;
}

static char *
strrstr(const char *str, const char *token)