// Step #2: translate Unicode code point to keystroke sequence
//
void usb_keyboard_class::write_unicode(uint16_t cpoint)
{
// Unicode code points beyond U+FFFF are not supported
// technically this input should probably be called UCS-2
if (cpoint < 32) {
if (cpoint == 10) write_key(KEY_ENTER);
return;
}
if (cpoint < 128) {
if (sizeof(KEYCODE_TYPE) == 1) {
write_keycode(pgm_read_byte(keycodes_ascii + (cpoint - 0x20)));
} else if (sizeof(KEYCODE_TYPE) == 2) {
write_keycode(pgm_read_word(keycodes_ascii + (cpoint - 0x20)));
}
return;
}
#ifdef ISO_8859_1_A0
if (cpoint <= 0xA0) return;
if (cpoint < 0x100) {
if (sizeof(KEYCODE_TYPE) == 1) {
write_keycode(pgm_read_byte(keycodes_iso_8859_1 + (cpoint - 0xA0)));
} else if (sizeof(KEYCODE_TYPE) == 2) {
write_keycode(pgm_read_word(keycodes_iso_8859_1 + (cpoint - 0xA0)));
}
return;
}
#endif
#ifdef UNICODE_20AC
if (cpoint == 0x20AC) write_keycode(UNICODE_20AC);
#endif
}
static int
atkbd_read_packet(struct event_device *ed)
{
struct atkbd_backend *b = ed->priv_ptr;
ssize_t ret = read(ed->fd, ed->packet_buf, 1);
if (ret == -1 && errno == EAGAIN) {
return 1;
} else if (ret != 1) {
return -1;
}
ed->packet_pos = 1;
if (!write_keycode(b->vkbd_fd, ed->packet_buf[0]))
return -1;
return 0;
}
