u_int
wsemul_sun_output(void *cookie, const u_char *data, u_int count, int kernel)
{
struct wsemul_sun_emuldata *edp = cookie;
struct wsemul_inputstate *instate;
u_int processed = 0;
#ifdef HAVE_JUMP_SCROLL
int lines;
#endif
int rc = 0;
#ifdef DIAGNOSTIC
if (kernel && !edp->console)
panic("wsemul_sun_output: kernel output, not console");
#endif
instate = kernel ? &edp->kstate : &edp->instate;
switch (edp->abortstate.state) {
case ABORT_FAILED_CURSOR:
/*
* If we could not display the cursor back, we pretended not
* having been able to display the last character. But this
* is a lie, so compensate here.
*/
data++, count--;
processed++;
wsemul_reset_abortstate(&edp->abortstate);
break;
case ABORT_OK:
/* remove cursor image */
rc = (*edp->emulops->cursor)
(edp->emulcookie, 0, edp->crow, edp->ccol);
if (rc != 0)
return 0;
break;
default:
break;
}
for (;;) {
#ifdef HAVE_JUMP_SCROLL
switch (edp->abortstate.state) {
case ABORT_FAILED_JUMP_SCROLL:
/*
* If we failed a previous jump scroll attempt, we
* need to try to resume it with the same distance.
* We can not recompute it since there might be more
* bytes in the tty ring, causing a different result.
*/
lines = edp->abortstate.lines;
break;
case ABORT_OK:
/*
* If scrolling is not disabled and we are the bottom of
* the screen, count newlines until an escape sequence
* appears.
*/
if ((edp->state == SUN_EMUL_STATE_NORMAL || kernel) &&
ROWS_LEFT == 0 && edp->scrolldist != 0)
lines = wsemul_sun_jump_scroll(edp, data,
count, kernel);
else
lines = 0;
break;
default:
/*
* If we are recovering a non-scrolling failure,
* do not try to scroll yet.
*/
lines = 0;
break;
}
if (lines > 1) {
wsemul_resume_abort(&edp->abortstate);
rc = wsemul_sun_scrollup(edp, lines);
if (rc != 0) {
wsemul_abort_jump_scroll(&edp->abortstate,
lines);
return processed;
}
wsemul_reset_abortstate(&edp->abortstate);
edp->crow--;
}
#endif
wsemul_resume_abort(&edp->abortstate);
if (wsemul_getchar(&data, &count, instate,
#ifdef HAVE_UTF8_SUPPORT
(edp->state == SUN_EMUL_STATE_NORMAL && !kernel) ?
edp->flags & SUN_EMUL_FLAGS_UTF8 : 0
#else
0
#endif
) != 0)
break;
if (instate->inchar < ' ') {
rc = wsemul_sun_output_lowchars(edp, instate, kernel);
if (rc != 0)
break;
processed++;
continue;
}
if (kernel) {
rc = wsemul_sun_output_normal(edp, instate, 1);
if (rc != 0)
break;
processed++;
continue;
}
switch (edp->state) {
case SUN_EMUL_STATE_NORMAL:
rc = wsemul_sun_output_normal(edp, instate, 0);
break;
case SUN_EMUL_STATE_HAVEESC:
rc = wsemul_sun_output_haveesc(edp, instate);
break;
case SUN_EMUL_STATE_CONTROL:
rc = wsemul_sun_output_control(edp, instate);
break;
#ifdef HAVE_UTF8_SUPPORT
case SUN_EMUL_STATE_PERCENT:
rc = wsemul_sun_output_percent(edp, instate);
break;
#endif
default:
#ifdef DIAGNOSTIC
panic("wsemul_sun: invalid state %d", edp->state);
#else
/* try to recover, if things get screwed up... */
edp->state = SUN_EMUL_STATE_NORMAL;
rc = wsemul_sun_output_normal(edp, instate, 0);
#endif
break;
}
if (rc != 0)
break;
processed++;
}
if (rc != 0)
wsemul_abort_other(&edp->abortstate);
else {
/* put cursor image back */
rc = (*edp->emulops->cursor)
(edp->emulcookie, 1, edp->crow, edp->ccol);
if (rc != 0) {
/*
* Fail the last character output, remembering that
* only the cursor operation really needs to be done.
*/
wsemul_abort_cursor(&edp->abortstate);
processed--;
}
}
if (rc == 0)
wsemul_reset_abortstate(&edp->abortstate);
return processed;
}
u_int
wsemul_dumb_output(void *cookie, const u_char *data, u_int count, int kernel)
{
struct wsemul_dumb_emuldata *edp = cookie;
u_int processed = 0;
u_char c;
int n;
int rc = 0;
if (edp->crippled) {
while (count-- > 0) {
wsemul_resume_abort(&edp->abortstate);
c = *data++;
if (c == ASCII_BEL)
wsdisplay_emulbell(edp->cbcookie);
else {
WSEMULOP(rc, edp, &edp->abortstate, putchar,
(edp->emulcookie, 0, 0, c, 0));
if (rc != 0)
break;
}
processed++;
}
if (rc != 0)
wsemul_abort_other(&edp->abortstate);
return processed;
}
switch (edp->abortstate.state) {
case ABORT_FAILED_CURSOR:
/*
* If we could not display the cursor back, we pretended not
* having been able to display the last character. But this
* is a lie, so compensate here.
*/
data++, count--;
processed++;
wsemul_reset_abortstate(&edp->abortstate);
break;
case ABORT_OK:
/* remove cursor image */
rc = (*edp->emulops->cursor)
(edp->emulcookie, 0, edp->crow, edp->ccol);
if (rc != 0)
return 0;
break;
default:
break;
}
while (count-- > 0) {
wsemul_resume_abort(&edp->abortstate);
c = *data++;
switch (c) {
case ASCII_BEL:
wsdisplay_emulbell(edp->cbcookie);
break;
case ASCII_BS:
if (edp->ccol > 0)
edp->ccol--;
break;
case ASCII_CR:
edp->ccol = 0;
break;
case ASCII_HT:
n = min(8 - (edp->ccol & 7),
edp->ncols - edp->ccol - 1);
WSEMULOP(rc, edp, &edp->abortstate, erasecols,
(edp->emulcookie, edp->crow, edp->ccol, n,
edp->defattr));
if (rc != 0)
break;
edp->ccol += n;
break;
case ASCII_FF:
WSEMULOP(rc, edp, &edp->abortstate, eraserows,
(edp->emulcookie, 0, edp->nrows, edp->defattr));
if (rc != 0)
break;
edp->ccol = 0;
edp->crow = 0;
break;
case ASCII_VT:
if (edp->crow > 0)
edp->crow--;
break;
default:
WSEMULOP(rc, edp, &edp->abortstate, putchar,
(edp->emulcookie, edp->crow, edp->ccol, c,
edp->defattr));
if (rc != 0)
break;
edp->ccol++;
/* if cur col is still on cur line, done. */
if (edp->ccol < edp->ncols)
break;
/* wrap the column around. */
edp->ccol = 0;
/* FALLTHROUGH */
case ASCII_LF:
/* if the cur line isn't the last, incr and leave. */
if (edp->crow < edp->nrows - 1) {
edp->crow++;
break;
}
n = 1; /* number of lines to scroll */
WSEMULOP(rc, edp, &edp->abortstate, copyrows,
(edp->emulcookie, n, 0, edp->nrows - n));
if (rc == 0)
WSEMULOP(rc, edp, &edp->abortstate, eraserows,
(edp->emulcookie, edp->nrows - n, n,
edp->defattr));
if (rc != 0) {
/* undo wrap-at-eol processing if necessary */
if (c != ASCII_LF)
edp->ccol = edp->ncols - 1;
break;
}
edp->crow -= n - 1;
break;
}
if (rc != 0)
break;
processed++;
}
if (rc != 0)
wsemul_abort_other(&edp->abortstate);
else {
/* put cursor image back */
rc = (*edp->emulops->cursor)
(edp->emulcookie, 1, edp->crow, edp->ccol);
if (rc != 0) {
/*
* Fail the last character output, remembering that
* only the cursor operation really needs to be done.
*/
wsemul_abort_cursor(&edp->abortstate);
processed--;
}
}
if (rc == 0)
wsemul_reset_abortstate(&edp->abortstate);
return processed;
}
