function utf8_to_ucs4_fast(str: String, len: Number(glong), items_written: Number(glong)): String {
    // Gjs wrapper for g_utf8_to_ucs4_fast()

Convert a string from UTF-8 to a 32-bit fixed width representation as UCS-4, assuming valid UTF-8 input. This function is roughly twice as fast as GLib.utf8_to_ucs4 but does no error checking on the input. A trailing 0 character will be added to the string after the converted text.


a UTF-8 encoded string


the maximum length of str to use, in bytes. If len < 0, then the string is nul-terminated.


location to store the number of characters in the result, or null.


a pointer to a newly allocated UCS-4 string. This value must be freed with