10 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
11 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
12 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
13 #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
15 /* Product-order comparisons for rectangular block selection. */
16 #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
17 #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
19 #define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
20 #define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
24 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
25 #define CL_VT100 0x0002 /* VT100 */
26 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
27 #define CL_VT102 0x0008 /* VT102 */
28 #define CL_VT220 0x0010 /* VT220 */
29 #define CL_VT320 0x0020 /* VT320 */
30 #define CL_VT420 0x0040 /* VT420 */
31 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
32 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
33 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
34 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
35 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
37 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
38 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
39 #define TM_VT102 (TM_VT100AVO|CL_VT102)
40 #define TM_VT220 (TM_VT102|CL_VT220)
41 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
42 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
44 #define TM_PUTTY (0xFFFF)
46 #define compatibility(x) \
47 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
48 term->termstate=TOPLEVEL; \
51 #define compatibility2(x,y) \
52 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
53 term->termstate=TOPLEVEL; \
57 #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
59 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
60 const wchar_t sel_nl
[] = SEL_NL
;
63 * Fetch the character at a particular position in a line array,
64 * for purposes of `wordtype'. The reason this isn't just a simple
65 * array reference is that if the character we find is UCSWIDE,
66 * then we must look one space further to the left.
68 #define UCSGET(a, x) \
69 ( (x)>0 && ((a)[(x)] & (CHAR_MASK | CSET_MASK)) == UCSWIDE ? \
70 (a)[(x)-1] : (a)[(x)] )
73 * Internal prototypes.
75 static unsigned long *resizeline(unsigned long *, int);
76 static unsigned long *lineptr(Terminal
*, int, int);
77 static void do_paint(Terminal
*, Context
, int);
78 static void erase_lots(Terminal
*, int, int, int);
79 static void swap_screen(Terminal
*, int, int, int);
80 static void update_sbar(Terminal
*);
81 static void deselect(Terminal
*);
82 static void term_print_finish(Terminal
*);
83 #ifdef OPTIMISE_SCROLL
84 static void scroll_display(Terminal
*, int, int, int);
85 #endif /* OPTIMISE_SCROLL */
88 * Resize a line to make it `cols' columns wide.
90 static unsigned long *resizeline(unsigned long *line
, int cols
)
93 unsigned long lineattrs
;
95 if (line
[0] != (unsigned long)cols
) {
97 * This line is the wrong length, which probably means it
98 * hasn't been accessed since a resize. Resize it now.
101 lineattrs
= line
[oldlen
+ 1];
102 line
= srealloc(line
, TSIZE
* (2 + cols
));
104 for (i
= oldlen
; i
< cols
; i
++)
105 line
[i
+ 1] = ERASE_CHAR
;
106 line
[cols
+ 1] = lineattrs
& LATTR_MODE
;
113 * Retrieve a line of the screen or of the scrollback, according to
114 * whether the y coordinate is non-negative or negative
117 static unsigned long *lineptr(Terminal
*term
, int y
, int lineno
)
119 unsigned long *line
, *newline
;
124 whichtree
= term
->screen
;
127 whichtree
= term
->scrollback
;
128 treeindex
= y
+ count234(term
->scrollback
);
130 line
= index234(whichtree
, treeindex
);
132 /* We assume that we don't screw up and retrieve something out of range. */
133 assert(line
!= NULL
);
135 newline
= resizeline(line
, term
->cols
);
136 if (newline
!= line
) {
137 delpos234(whichtree
, treeindex
);
138 addpos234(whichtree
, newline
, treeindex
);
145 #define lineptr(x) lineptr(term,x,__LINE__)
148 * Set up power-on settings for the terminal.
150 static void power_on(Terminal
*term
)
152 term
->curs
.x
= term
->curs
.y
= 0;
153 term
->alt_x
= term
->alt_y
= 0;
154 term
->savecurs
.x
= term
->savecurs
.y
= 0;
155 term
->alt_t
= term
->marg_t
= 0;
156 if (term
->rows
!= -1)
157 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
159 term
->alt_b
= term
->marg_b
= 0;
160 if (term
->cols
!= -1) {
162 for (i
= 0; i
< term
->cols
; i
++)
163 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
165 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
166 term
->alt_ins
= term
->insert
= FALSE
;
167 term
->alt_wnext
= term
->wrapnext
= term
->save_wnext
= FALSE
;
168 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
169 term
->alt_cset
= term
->cset
= term
->save_cset
= 0;
170 term
->alt_utf
= term
->utf
= term
->save_utf
= 0;
172 term
->alt_sco_acs
= term
->sco_acs
= term
->save_sco_acs
= 0;
173 term
->cset_attr
[0] = term
->cset_attr
[1] = term
->save_csattr
= ATTR_ASCII
;
175 term
->in_vbell
= FALSE
;
177 term
->big_cursor
= 0;
178 term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
179 term
->term_editing
= term
->term_echoing
= FALSE
;
180 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
181 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
182 term
->use_bce
= term
->cfg
.bce
;
183 term
->blink_is_real
= term
->cfg
.blinktext
;
184 term
->erase_char
= ERASE_CHAR
;
186 term_print_finish(term
);
189 for (i
= 0; i
< 256; i
++)
190 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
193 swap_screen(term
, 1, FALSE
, FALSE
);
194 erase_lots(term
, FALSE
, TRUE
, TRUE
);
195 swap_screen(term
, 0, FALSE
, FALSE
);
196 erase_lots(term
, FALSE
, TRUE
, TRUE
);
201 * Force a screen update.
203 void term_update(Terminal
*term
)
206 ctx
= get_ctx(term
->frontend
);
208 int need_sbar_update
= term
->seen_disp_event
;
209 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
210 term
->disptop
= 0; /* return to main screen */
211 term
->seen_disp_event
= 0;
212 need_sbar_update
= TRUE
;
214 if (need_sbar_update
)
216 do_paint(term
, ctx
, TRUE
);
217 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
223 * Called from front end when a keypress occurs, to trigger
224 * anything magical that needs to happen in that situation.
226 void term_seen_key_event(Terminal
*term
)
229 * On any keypress, clear the bell overload mechanism
230 * completely, on the grounds that large numbers of
231 * beeps coming from deliberate key action are likely
232 * to be intended (e.g. beeps from filename completion
233 * blocking repeatedly).
235 term
->beep_overloaded
= FALSE
;
236 while (term
->beephead
) {
237 struct beeptime
*tmp
= term
->beephead
;
238 term
->beephead
= tmp
->next
;
241 term
->beeptail
= NULL
;
245 * Reset the scrollback on keypress, if we're doing that.
247 if (term
->cfg
.scroll_on_key
) {
248 term
->disptop
= 0; /* return to main screen */
249 term
->seen_disp_event
= 1;
254 * Same as power_on(), but an external function.
256 void term_pwron(Terminal
*term
)
259 if (term
->ldisc
) /* cause ldisc to notice changes */
260 ldisc_send(term
->ldisc
, NULL
, 0, 0);
268 * When the user reconfigures us, we need to check the forbidden-
269 * alternate-screen config option, disable raw mouse mode if the
270 * user has disabled mouse reporting, and abandon a print job if
271 * the user has disabled printing.
273 void term_reconfig(Terminal
*term
, Config
*cfg
)
276 * Before adopting the new config, check all those terminal
277 * settings which control power-on defaults; and if they've
278 * changed, we will modify the current state as well as the
279 * default one. The full list is: Auto wrap mode, DEC Origin
280 * Mode, BCE, blinking text, character classes.
282 int reset_wrap
, reset_decom
, reset_bce
, reset_blink
, reset_charclass
;
285 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
286 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
287 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
288 reset_blink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
290 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
291 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
294 term
->cfg
= *cfg
; /* STRUCTURE COPY */
297 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
299 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
301 term
->use_bce
= term
->cfg
.bce
;
303 term
->blink_is_real
= term
->cfg
.blinktext
;
305 for (i
= 0; i
< 256; i
++)
306 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
308 if (term
->cfg
.no_alt_screen
)
309 swap_screen(term
, 0, FALSE
, FALSE
);
310 if (term
->cfg
.no_mouse_rep
) {
311 term
->xterm_mouse
= 0;
312 set_raw_mouse_mode(term
->frontend
, 0);
314 if (term
->cfg
.no_remote_charset
) {
315 term
->cset_attr
[0] = term
->cset_attr
[1] = ATTR_ASCII
;
316 term
->sco_acs
= term
->alt_sco_acs
= 0;
319 if (!*term
->cfg
.printer
) {
320 term_print_finish(term
);
325 * Clear the scrollback.
327 void term_clrsb(Terminal
*term
)
331 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
338 * Initialise the terminal.
340 Terminal
*term_init(Config
*mycfg
, void *frontend
)
345 * Allocate a new Terminal structure and initialise the fields
348 term
= smalloc(sizeof(Terminal
));
349 term
->frontend
= frontend
;
350 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
352 term
->compatibility_level
= TM_PUTTY
;
353 strcpy(term
->id_string
, "\033[?6c");
354 term
->last_blink
= term
->last_tblink
= 0;
355 term
->paste_buffer
= NULL
;
357 term
->last_paste
= 0;
358 bufchain_init(&term
->inbuf
);
359 bufchain_init(&term
->printer_buf
);
360 term
->printing
= term
->only_printing
= FALSE
;
361 term
->print_job
= NULL
;
362 term
->vt52_mode
= FALSE
;
363 term
->cr_lf_return
= FALSE
;
364 term
->seen_disp_event
= FALSE
;
365 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
366 term
->reset_132
= FALSE
;
367 term
->blinker
= term
->tblinker
= 0;
369 term
->repeat_off
= FALSE
;
370 term
->termstate
= TOPLEVEL
;
371 term
->selstate
= NO_SELECTION
;
374 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
376 term
->disptext
= term
->dispcurs
= NULL
;
379 term
->rows
= term
->cols
= -1;
381 term
->beephead
= term
->beeptail
= NULL
;
383 term
->lastbeep
= FALSE
;
384 term
->beep_overloaded
= FALSE
;
385 term
->attr_mask
= 0xffffffff;
386 term
->resize_fn
= NULL
;
387 term
->resize_ctx
= NULL
;
393 * Set up the terminal for a given size.
395 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
398 unsigned long *newdisp
, *line
;
401 int save_alt_which
= term
->alt_which
;
403 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
404 newsavelines
== term
->savelines
)
405 return; /* nothing to do */
408 swap_screen(term
, 0, FALSE
, FALSE
);
410 term
->alt_t
= term
->marg_t
= 0;
411 term
->alt_b
= term
->marg_b
= newrows
- 1;
413 if (term
->rows
== -1) {
414 term
->scrollback
= newtree234(NULL
);
415 term
->screen
= newtree234(NULL
);
420 * Resize the screen and scrollback. We only need to shift
421 * lines around within our data structures, because lineptr()
422 * will take care of resizing each individual line if
425 * - If the new screen and the old screen differ in length, we
426 * must shunt some lines in from the scrollback or out to
429 * - If doing that fails to provide us with enough material to
430 * fill the new screen (i.e. the number of rows needed in
431 * the new screen exceeds the total number in the previous
432 * screen+scrollback), we must invent some blank lines to
435 * - Then, if the new scrollback length is less than the
436 * amount of scrollback we actually have, we must throw some
439 sblen
= count234(term
->scrollback
);
440 /* Do this loop to expand the screen if newrows > rows */
441 for (i
= term
->rows
; i
< newrows
; i
++) {
443 line
= delpos234(term
->scrollback
, --sblen
);
445 line
= smalloc(TSIZE
* (newcols
+ 2));
447 for (j
= 0; j
<= newcols
; j
++)
448 line
[j
+ 1] = ERASE_CHAR
;
450 addpos234(term
->screen
, line
, 0);
452 /* Do this loop to shrink the screen if newrows < rows */
453 for (i
= newrows
; i
< term
->rows
; i
++) {
454 line
= delpos234(term
->screen
, 0);
455 addpos234(term
->scrollback
, line
, sblen
++);
457 assert(count234(term
->screen
) == newrows
);
458 while (sblen
> newsavelines
) {
459 line
= delpos234(term
->scrollback
, 0);
463 assert(count234(term
->scrollback
) <= newsavelines
);
466 newdisp
= smalloc(newrows
* (newcols
+ 1) * TSIZE
);
467 for (i
= 0; i
< newrows
* (newcols
+ 1); i
++)
468 newdisp
[i
] = ATTR_INVALID
;
469 sfree(term
->disptext
);
470 term
->disptext
= newdisp
;
471 term
->dispcurs
= NULL
;
473 newalt
= newtree234(NULL
);
474 for (i
= 0; i
< newrows
; i
++) {
475 line
= smalloc(TSIZE
* (newcols
+ 2));
477 for (j
= 0; j
<= newcols
; j
++)
478 line
[j
+ 1] = term
->erase_char
;
479 addpos234(newalt
, line
, i
);
481 if (term
->alt_screen
) {
482 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
484 freetree234(term
->alt_screen
);
486 term
->alt_screen
= newalt
;
488 term
->tabs
= srealloc(term
->tabs
, newcols
* sizeof(*term
->tabs
));
491 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
492 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
496 term
->curs
.y
+= newrows
- term
->rows
;
497 if (term
->curs
.y
< 0)
499 if (term
->curs
.y
>= newrows
)
500 term
->curs
.y
= newrows
- 1;
501 if (term
->curs
.x
>= newcols
)
502 term
->curs
.x
= newcols
- 1;
503 term
->alt_x
= term
->alt_y
= 0;
504 term
->wrapnext
= term
->alt_wnext
= FALSE
;
506 term
->rows
= newrows
;
507 term
->cols
= newcols
;
508 term
->savelines
= newsavelines
;
511 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
516 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
520 * Hand a function and context pointer to the terminal which it can
521 * use to notify a back end of resizes.
523 void term_provide_resize_fn(Terminal
*term
,
524 void (*resize_fn
)(void *, int, int),
527 term
->resize_fn
= resize_fn
;
528 term
->resize_ctx
= resize_ctx
;
529 if (term
->cols
> 0 && term
->rows
> 0)
530 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
534 * Swap screens. If `reset' is TRUE and we have been asked to
535 * switch to the alternate screen, we must bring most of its
536 * configuration from the main screen and erase the contents of the
537 * alternate screen completely. (This is even true if we're already
538 * on it! Blame xterm.)
540 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
546 reset
= FALSE
; /* do no weird resetting if which==0 */
548 if (which
!= term
->alt_which
) {
549 term
->alt_which
= which
;
551 ttr
= term
->alt_screen
;
552 term
->alt_screen
= term
->screen
;
555 if (!reset
&& !keep_cur_pos
)
556 term
->curs
.x
= term
->alt_x
;
559 if (!reset
&& !keep_cur_pos
)
560 term
->curs
.y
= term
->alt_y
;
563 if (!reset
) term
->marg_t
= term
->alt_t
;
566 if (!reset
) term
->marg_b
= term
->alt_b
;
569 if (!reset
) term
->dec_om
= term
->alt_om
;
572 if (!reset
) term
->wrap
= term
->alt_wrap
;
575 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
578 if (!reset
) term
->insert
= term
->alt_ins
;
581 if (!reset
) term
->cset
= term
->alt_cset
;
584 if (!reset
) term
->utf
= term
->alt_utf
;
587 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
588 term
->alt_sco_acs
= t
;
591 if (reset
&& term
->screen
) {
593 * Yes, this _is_ supposed to honour background-colour-erase.
595 erase_lots(term
, FALSE
, TRUE
, TRUE
);
599 * This might not be possible if we're called during
607 * Update the scroll bar.
609 static void update_sbar(Terminal
*term
)
613 nscroll
= count234(term
->scrollback
);
615 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
616 nscroll
+ term
->disptop
, term
->rows
);
620 * Check whether the region bounded by the two pointers intersects
621 * the scroll region, and de-select the on-screen selection if so.
623 static void check_selection(Terminal
*term
, pos from
, pos to
)
625 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
630 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
631 * for backward.) `sb' is TRUE if the scrolling is permitted to
632 * affect the scrollback buffer.
634 * NB this function invalidates all pointers into lines of the
635 * screen data structures. In particular, you MUST call fix_cpos
636 * after calling scroll() and before doing anything else that
637 * uses the cpos shortcut pointer.
639 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
641 unsigned long *line
, *line2
;
642 int i
, seltop
, olddisptop
, shift
;
644 if (topline
!= 0 || term
->alt_which
!= 0)
647 olddisptop
= term
->disptop
;
651 line
= delpos234(term
->screen
, botline
);
652 line
= resizeline(line
, term
->cols
);
653 for (i
= 0; i
< term
->cols
; i
++)
654 line
[i
+ 1] = term
->erase_char
;
655 line
[term
->cols
+ 1] = 0;
656 addpos234(term
->screen
, line
, topline
);
658 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
660 if (term
->selstart
.y
> botline
) {
661 term
->selstart
.y
= botline
;
662 term
->selstart
.x
= 0;
665 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
667 if (term
->selend
.y
> botline
) {
668 term
->selend
.y
= botline
;
677 line
= delpos234(term
->screen
, topline
);
678 if (sb
&& term
->savelines
> 0) {
679 int sblen
= count234(term
->scrollback
);
681 * We must add this line to the scrollback. We'll
682 * remove a line from the top of the scrollback to
683 * replace it, or allocate a new one if the
684 * scrollback isn't full.
686 if (sblen
== term
->savelines
) {
687 sblen
--, line2
= delpos234(term
->scrollback
, 0);
689 line2
= smalloc(TSIZE
* (term
->cols
+ 2));
690 line2
[0] = term
->cols
;
692 addpos234(term
->scrollback
, line
, sblen
);
696 * If the user is currently looking at part of the
697 * scrollback, and they haven't enabled any options
698 * that are going to reset the scrollback as a
699 * result of this movement, then the chances are
700 * they'd like to keep looking at the same line. So
701 * we move their viewpoint at the same rate as the
702 * scroll, at least until their viewpoint hits the
703 * top end of the scrollback buffer, at which point
704 * we don't have the choice any more.
706 * Thanks to Jan Holmen Holsten for the idea and
707 * initial implementation.
709 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
712 line
= resizeline(line
, term
->cols
);
713 for (i
= 0; i
< term
->cols
; i
++)
714 line
[i
+ 1] = term
->erase_char
;
715 line
[term
->cols
+ 1] = 0;
716 addpos234(term
->screen
, line
, botline
);
719 * If the selection endpoints move into the scrollback,
720 * we keep them moving until they hit the top. However,
721 * of course, if the line _hasn't_ moved into the
722 * scrollback then we don't do this, and cut them off
723 * at the top of the scroll region.
725 * This applies to selstart and selend (for an existing
726 * selection), and also selanchor (for one being
727 * selected as we speak).
729 seltop
= sb ?
-term
->savelines
: topline
;
731 if (term
->selstart
.y
>= seltop
&&
732 term
->selstart
.y
<= botline
) {
734 if (term
->selstart
.y
< seltop
) {
735 term
->selstart
.y
= seltop
;
736 term
->selstart
.x
= 0;
739 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
741 if (term
->selend
.y
< seltop
) {
742 term
->selend
.y
= seltop
;
746 if (term
->selanchor
.y
>= seltop
&& term
->selanchor
.y
<= botline
) {
748 if (term
->selanchor
.y
< seltop
) {
749 term
->selanchor
.y
= seltop
;
750 term
->selanchor
.x
= 0;
757 #ifdef OPTIMISE_SCROLL
758 shift
+= term
->disptop
- olddisptop
;
759 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
760 scroll_display(term
, topline
, botline
, shift
);
761 #endif /* OPTIMISE_SCROLL */
764 #ifdef OPTIMISE_SCROLL
766 * Scroll the physical display, and our conception of it in disptext.
768 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
770 unsigned long *start
, *end
;
771 int distance
, size
, i
;
773 start
= term
->disptext
+ topline
* (term
->cols
+ 1);
774 end
= term
->disptext
+ (botline
+ 1) * (term
->cols
+ 1);
775 distance
= (lines
> 0 ? lines
: -lines
) * (term
->cols
+ 1);
776 size
= end
- start
- distance
;
778 memmove(start
, start
+ distance
, size
* TSIZE
);
779 if (term
->dispcurs
>= start
+ distance
&&
780 term
->dispcurs
<= start
+ distance
+ size
)
781 term
->dispcurs
-= distance
;
782 for (i
= 0; i
< distance
; i
++)
783 (start
+ size
)[i
] |= ATTR_INVALID
;
785 memmove(start
+ distance
, start
, size
* TSIZE
);
786 if (term
->dispcurs
>= start
&& term
->dispcurs
<= start
+ size
)
787 term
->dispcurs
+= distance
;
788 for (i
= 0; i
< distance
; i
++)
789 start
[i
] |= ATTR_INVALID
;
791 do_scroll(term
->frontend
, topline
, botline
, lines
);
793 #endif /* OPTIMISE_SCROLL */
796 * Move the cursor to a given position, clipping at boundaries. We
797 * may or may not want to clip at the scroll margin: marg_clip is 0
798 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
799 * even _being_ outside the margins.
801 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
808 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
811 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
822 term
->wrapnext
= FALSE
;
826 * Save or restore the cursor and SGR mode.
828 static void save_cursor(Terminal
*term
, int save
)
831 term
->savecurs
= term
->curs
;
832 term
->save_attr
= term
->curr_attr
;
833 term
->save_cset
= term
->cset
;
834 term
->save_utf
= term
->utf
;
835 term
->save_wnext
= term
->wrapnext
;
836 term
->save_csattr
= term
->cset_attr
[term
->cset
];
837 term
->save_sco_acs
= term
->sco_acs
;
839 term
->curs
= term
->savecurs
;
840 /* Make sure the window hasn't shrunk since the save */
841 if (term
->curs
.x
>= term
->cols
)
842 term
->curs
.x
= term
->cols
- 1;
843 if (term
->curs
.y
>= term
->rows
)
844 term
->curs
.y
= term
->rows
- 1;
846 term
->curr_attr
= term
->save_attr
;
847 term
->cset
= term
->save_cset
;
848 term
->utf
= term
->save_utf
;
849 term
->wrapnext
= term
->save_wnext
;
851 * wrapnext might reset to False if the x position is no
852 * longer at the rightmost edge.
854 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
855 term
->wrapnext
= FALSE
;
856 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
857 term
->sco_acs
= term
->save_sco_acs
;
860 term
->erase_char
= (' ' | ATTR_ASCII
|
862 (ATTR_FGMASK
| ATTR_BGMASK
)));
867 * This function is called before doing _anything_ which affects
868 * only part of a line of text. It is used to mark the boundary
869 * between two character positions, and it indicates that some sort
870 * of effect is going to happen on only one side of that boundary.
872 * The effect of this function is to check whether a CJK
873 * double-width character is straddling the boundary, and to remove
874 * it and replace it with two spaces if so. (Of course, one or
875 * other of those spaces is then likely to be replaced with
876 * something else again, as a result of whatever happens next.)
878 * Also, if the boundary is at the right-hand _edge_ of the screen,
879 * it implies something deliberate is being done to the rightmost
880 * column position; hence we must clear LATTR_WRAPPED2.
882 * The input to the function is the coordinates of the _second_
883 * character of the pair.
885 static void check_boundary(Terminal
*term
, int x
, int y
)
887 unsigned long *ldata
;
889 /* Validate input coordinates, just in case. */
890 if (x
== 0 || x
> term
->cols
)
894 if (x
== term
->cols
) {
895 ldata
[x
] &= ~LATTR_WRAPPED2
;
897 if ((ldata
[x
] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
) {
898 ldata
[x
-1] = ldata
[x
] =
899 (ldata
[x
-1] &~ (CHAR_MASK
| CSET_MASK
)) | ATTR_ASCII
| ' ';
905 * Erase a large portion of the screen: the whole screen, or the
906 * whole line, or parts thereof.
908 static void erase_lots(Terminal
*term
,
909 int line_only
, int from_begin
, int to_end
)
913 unsigned long *ldata
;
916 start
.y
= term
->curs
.y
;
918 end
.y
= term
->curs
.y
+ 1;
935 if (!from_begin
|| !to_end
)
936 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
937 check_selection(term
, start
, end
);
939 /* Clear screen also forces a full window redraw, just in case. */
940 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
941 term_invalidate(term
);
943 ldata
= lineptr(start
.y
);
944 while (poslt(start
, end
)) {
945 if (start
.x
== term
->cols
&& !erase_lattr
)
946 ldata
[start
.x
] &= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
948 ldata
[start
.x
] = term
->erase_char
;
949 if (incpos(start
) && start
.y
< term
->rows
)
950 ldata
= lineptr(start
.y
);
955 * Insert or delete characters within the current line. n is +ve if
956 * insertion is desired, and -ve for deletion.
958 static void insch(Terminal
*term
, int n
)
960 int dir
= (n
< 0 ?
-1 : +1);
963 unsigned long *ldata
;
965 n
= (n
< 0 ?
-n
: n
);
966 if (n
> term
->cols
- term
->curs
.x
)
967 n
= term
->cols
- term
->curs
.x
;
968 m
= term
->cols
- term
->curs
.x
- n
;
969 cursplus
.y
= term
->curs
.y
;
970 cursplus
.x
= term
->curs
.x
+ n
;
971 check_selection(term
, term
->curs
, cursplus
);
972 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
974 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
975 ldata
= lineptr(term
->curs
.y
);
977 memmove(ldata
+ term
->curs
.x
, ldata
+ term
->curs
.x
+ n
, m
* TSIZE
);
979 ldata
[term
->curs
.x
+ m
++] = term
->erase_char
;
981 memmove(ldata
+ term
->curs
.x
+ n
, ldata
+ term
->curs
.x
, m
* TSIZE
);
983 ldata
[term
->curs
.x
+ n
] = term
->erase_char
;
988 * Toggle terminal mode `mode' to state `state'. (`query' indicates
989 * whether the mode is a DEC private one or a normal one.)
991 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
997 case 1: /* application cursor keys */
998 term
->app_cursor_keys
= state
;
1000 case 2: /* VT52 mode */
1001 term
->vt52_mode
= !state
;
1002 if (term
->vt52_mode
) {
1003 term
->blink_is_real
= FALSE
;
1004 term
->vt52_bold
= FALSE
;
1006 term
->blink_is_real
= term
->cfg
.blinktext
;
1009 case 3: /* 80/132 columns */
1011 if (!term
->cfg
.no_remote_resize
)
1012 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
1013 term
->reset_132
= state
;
1015 case 5: /* reverse video */
1017 * Toggle reverse video. If we receive an OFF within the
1018 * visual bell timeout period after an ON, we trigger an
1019 * effective visual bell, so that ESC[?5hESC[?5l will
1020 * always be an actually _visible_ visual bell.
1022 ticks
= GETTICKCOUNT();
1023 /* turn off a previous vbell to avoid inconsistencies */
1024 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
1025 term
->in_vbell
= FALSE
;
1026 if (term
->rvideo
&& !state
&& /* we're turning it off... */
1027 (ticks
- term
->rvbell_startpoint
) < VBELL_TIMEOUT
) {/*...soon*/
1028 /* If there's no vbell timeout already, or this one lasts
1029 * longer, replace vbell_timeout with ours. */
1030 if (!term
->in_vbell
||
1031 (term
->rvbell_startpoint
- term
->vbell_startpoint
<
1033 term
->vbell_startpoint
= term
->rvbell_startpoint
;
1034 term
->in_vbell
= TRUE
; /* may clear rvideo but set in_vbell */
1035 } else if (!term
->rvideo
&& state
) {
1036 /* This is an ON, so we notice the time and save it. */
1037 term
->rvbell_startpoint
= ticks
;
1039 term
->rvideo
= state
;
1040 term
->seen_disp_event
= TRUE
;
1044 case 6: /* DEC origin mode */
1045 term
->dec_om
= state
;
1047 case 7: /* auto wrap */
1050 case 8: /* auto key repeat */
1051 term
->repeat_off
= !state
;
1053 case 10: /* set local edit mode */
1054 term
->term_editing
= state
;
1055 if (term
->ldisc
) /* cause ldisc to notice changes */
1056 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1058 case 25: /* enable/disable cursor */
1059 compatibility2(OTHER
, VT220
);
1060 term
->cursor_on
= state
;
1061 term
->seen_disp_event
= TRUE
;
1063 case 47: /* alternate screen */
1064 compatibility(OTHER
);
1066 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
1069 case 1000: /* xterm mouse 1 */
1070 term
->xterm_mouse
= state ?
1 : 0;
1071 set_raw_mouse_mode(term
->frontend
, state
);
1073 case 1002: /* xterm mouse 2 */
1074 term
->xterm_mouse
= state ?
2 : 0;
1075 set_raw_mouse_mode(term
->frontend
, state
);
1077 case 1047: /* alternate screen */
1078 compatibility(OTHER
);
1080 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
1083 case 1048: /* save/restore cursor */
1084 save_cursor(term
, state
);
1085 if (!state
) term
->seen_disp_event
= TRUE
;
1087 case 1049: /* cursor & alternate screen */
1089 save_cursor(term
, state
);
1090 if (!state
) term
->seen_disp_event
= TRUE
;
1091 compatibility(OTHER
);
1093 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
1095 save_cursor(term
, state
);
1100 case 4: /* set insert mode */
1101 compatibility(VT102
);
1102 term
->insert
= state
;
1104 case 12: /* set echo mode */
1105 term
->term_echoing
= !state
;
1106 if (term
->ldisc
) /* cause ldisc to notice changes */
1107 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1109 case 20: /* Return sends ... */
1110 term
->cr_lf_return
= state
;
1112 case 34: /* Make cursor BIG */
1113 compatibility2(OTHER
, VT220
);
1114 term
->big_cursor
= !state
;
1119 * Process an OSC sequence: set window title or icon name.
1121 static void do_osc(Terminal
*term
)
1124 while (term
->osc_strlen
--)
1125 term
->wordness
[(unsigned char)
1126 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
1128 term
->osc_string
[term
->osc_strlen
] = '\0';
1129 switch (term
->esc_args
[0]) {
1132 if (!term
->cfg
.no_remote_wintitle
)
1133 set_icon(term
->frontend
, term
->osc_string
);
1134 if (term
->esc_args
[0] == 1)
1136 /* fall through: parameter 0 means set both */
1139 if (!term
->cfg
.no_remote_wintitle
)
1140 set_title(term
->frontend
, term
->osc_string
);
1147 * ANSI printing routines.
1149 static void term_print_setup(Terminal
*term
)
1151 bufchain_clear(&term
->printer_buf
);
1152 term
->print_job
= printer_start_job(term
->cfg
.printer
);
1154 static void term_print_flush(Terminal
*term
)
1159 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
1160 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1163 printer_job_data(term
->print_job
, data
, len
);
1164 bufchain_consume(&term
->printer_buf
, len
);
1167 static void term_print_finish(Terminal
*term
)
1173 if (!term
->printing
&& !term
->only_printing
)
1174 return; /* we need do nothing */
1176 term_print_flush(term
);
1177 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
1178 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1180 if (c
== '\033' || c
== '\233') {
1181 bufchain_consume(&term
->printer_buf
, size
);
1184 printer_job_data(term
->print_job
, &c
, 1);
1185 bufchain_consume(&term
->printer_buf
, 1);
1188 printer_finish_job(term
->print_job
);
1189 term
->print_job
= NULL
;
1190 term
->printing
= term
->only_printing
= FALSE
;
1194 * Remove everything currently in `inbuf' and stick it up on the
1195 * in-memory display. There's a big state machine in here to
1196 * process escape sequences...
1198 void term_out(Terminal
*term
)
1201 unsigned char localbuf
[256], *chars
;
1206 chars
= NULL
; /* placate compiler warnings */
1207 while (nchars
> 0 || bufchain_size(&term
->inbuf
) > 0) {
1211 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
1212 if (nchars
> sizeof(localbuf
))
1213 nchars
= sizeof(localbuf
);
1214 memcpy(localbuf
, ret
, nchars
);
1215 bufchain_consume(&term
->inbuf
, nchars
);
1217 assert(chars
!= NULL
);
1223 * Optionally log the session traffic to a file. Useful for
1224 * debugging and possibly also useful for actual logging.
1226 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
1227 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
1233 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1234 * be able to display 8-bit characters, but I'll let that go 'cause
1239 * If we're printing, add the character to the printer
1242 if (term
->printing
) {
1243 bufchain_add(&term
->printer_buf
, &c
, 1);
1246 * If we're in print-only mode, we use a much simpler
1247 * state machine designed only to recognise the ESC[4i
1248 * termination sequence.
1250 if (term
->only_printing
) {
1252 term
->print_state
= 1;
1253 else if (c
== (unsigned char)'\233')
1254 term
->print_state
= 2;
1255 else if (c
== '[' && term
->print_state
== 1)
1256 term
->print_state
= 2;
1257 else if (c
== '4' && term
->print_state
== 2)
1258 term
->print_state
= 3;
1259 else if (c
== 'i' && term
->print_state
== 3)
1260 term
->print_state
= 4;
1262 term
->print_state
= 0;
1263 if (term
->print_state
== 4) {
1264 term_print_finish(term
);
1270 /* First see about all those translations. */
1271 if (term
->termstate
== TOPLEVEL
) {
1273 switch (term
->utf_state
) {
1276 /* UTF-8 must be stateless so we ignore iso2022. */
1277 if (unitab_ctrl
[c
] != 0xFF)
1279 else c
= ((unsigned char)c
) | ATTR_ASCII
;
1281 } else if ((c
& 0xe0) == 0xc0) {
1282 term
->utf_size
= term
->utf_state
= 1;
1283 term
->utf_char
= (c
& 0x1f);
1284 } else if ((c
& 0xf0) == 0xe0) {
1285 term
->utf_size
= term
->utf_state
= 2;
1286 term
->utf_char
= (c
& 0x0f);
1287 } else if ((c
& 0xf8) == 0xf0) {
1288 term
->utf_size
= term
->utf_state
= 3;
1289 term
->utf_char
= (c
& 0x07);
1290 } else if ((c
& 0xfc) == 0xf8) {
1291 term
->utf_size
= term
->utf_state
= 4;
1292 term
->utf_char
= (c
& 0x03);
1293 } else if ((c
& 0xfe) == 0xfc) {
1294 term
->utf_size
= term
->utf_state
= 5;
1295 term
->utf_char
= (c
& 0x01);
1306 if ((c
& 0xC0) != 0x80) {
1309 term
->utf_state
= 0;
1312 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
1313 if (--term
->utf_state
)
1318 /* Is somebody trying to be evil! */
1320 (c
< 0x800 && term
->utf_size
>= 2) ||
1321 (c
< 0x10000 && term
->utf_size
>= 3) ||
1322 (c
< 0x200000 && term
->utf_size
>= 4) ||
1323 (c
< 0x4000000 && term
->utf_size
>= 5))
1326 /* Unicode line separator and paragraph separator are CR-LF */
1327 if (c
== 0x2028 || c
== 0x2029)
1330 /* High controls are probably a Baaad idea too. */
1334 /* The UTF-16 surrogates are not nice either. */
1335 /* The standard give the option of decoding these:
1336 * I don't want to! */
1337 if (c
>= 0xD800 && c
< 0xE000)
1340 /* ISO 10646 characters now limited to UTF-16 range. */
1344 /* This is currently a TagPhobic application.. */
1345 if (c
>= 0xE0000 && c
<= 0xE007F)
1348 /* U+FEFF is best seen as a null. */
1351 /* But U+FFFE is an error. */
1352 if (c
== 0xFFFE || c
== 0xFFFF)
1355 /* Oops this is a 16bit implementation */
1360 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1361 else if(term
->sco_acs
&&
1362 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
1364 if (term
->sco_acs
== 2) c
|= 0x80;
1367 switch (term
->cset_attr
[term
->cset
]) {
1369 * Linedraw characters are different from 'ESC ( B'
1370 * only for a small range. For ones outside that
1371 * range, make sure we use the same font as well as
1372 * the same encoding.
1375 if (unitab_ctrl
[c
] != 0xFF)
1378 c
= ((unsigned char) c
) | ATTR_LINEDRW
;
1382 /* If UK-ASCII, make the '#' a LineDraw Pound */
1384 c
= '}' | ATTR_LINEDRW
;
1387 /*FALLTHROUGH*/ case ATTR_ASCII
:
1388 if (unitab_ctrl
[c
] != 0xFF)
1391 c
= ((unsigned char) c
) | ATTR_ASCII
;
1394 if (c
>=' ') c
= ((unsigned char)c
) | ATTR_SCOACS
;
1400 /* How about C1 controls ? */
1401 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
1402 !term
->vt52_mode
&& has_compat(VT220
)) {
1403 term
->termstate
= SEEN_ESC
;
1404 term
->esc_query
= FALSE
;
1405 c
= '@' + (c
& 0x1F);
1408 /* Or the GL control. */
1409 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
1410 if (term
->curs
.x
&& !term
->wrapnext
)
1412 term
->wrapnext
= FALSE
;
1414 if (!term
->cfg
.no_dbackspace
) /* destructive bksp might be disabled */
1415 *term
->cpos
= (' ' | term
->curr_attr
| ATTR_ASCII
);
1417 /* Or normal C0 controls. */
1418 if ((c
& -32) == 0 && term
->termstate
< DO_CTRLS
) {
1420 case '\005': /* terminal type query */
1421 /* Strictly speaking this is VT100 but a VT100 defaults to
1422 * no response. Other terminals respond at their option.
1424 * Don't put a CR in the default string as this tends to
1425 * upset some weird software.
1427 * An xterm returns "xterm" (5 characters)
1429 compatibility(ANSIMIN
);
1431 char abuf
[256], *s
, *d
;
1433 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
; s
++) {
1435 if (*s
>= 'a' && *s
<= 'z')
1436 *d
++ = (*s
- ('a' - 1));
1437 else if ((*s
>= '@' && *s
<= '_') ||
1438 *s
== '?' || (*s
& 0x80))
1443 } else if (*s
== '^') {
1448 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
1454 struct beeptime
*newbeep
;
1455 unsigned long ticks
;
1457 ticks
= GETTICKCOUNT();
1459 if (!term
->beep_overloaded
) {
1460 newbeep
= smalloc(sizeof(struct beeptime
));
1461 newbeep
->ticks
= ticks
;
1462 newbeep
->next
= NULL
;
1463 if (!term
->beephead
)
1464 term
->beephead
= newbeep
;
1466 term
->beeptail
->next
= newbeep
;
1467 term
->beeptail
= newbeep
;
1472 * Throw out any beeps that happened more than
1475 while (term
->beephead
&&
1476 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
1477 struct beeptime
*tmp
= term
->beephead
;
1478 term
->beephead
= tmp
->next
;
1480 if (!term
->beephead
)
1481 term
->beeptail
= NULL
;
1485 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
1486 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
1488 * If we're currently overloaded and the
1489 * last beep was more than s seconds ago,
1490 * leave overload mode.
1492 term
->beep_overloaded
= FALSE
;
1493 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
1494 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
1496 * Now, if we have n or more beeps
1497 * remaining in the queue, go into overload
1500 term
->beep_overloaded
= TRUE
;
1502 term
->lastbeep
= ticks
;
1505 * Perform an actual beep if we're not overloaded.
1507 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
1508 beep(term
->frontend
, term
->cfg
.beep
);
1509 if (term
->cfg
.beep
== BELL_VISUAL
) {
1510 term
->in_vbell
= TRUE
;
1511 term
->vbell_startpoint
= ticks
;
1519 if (term
->curs
.x
== 0 &&
1520 (term
->curs
.y
== 0 || term
->wrap
== 0))
1522 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
1523 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
1524 else if (term
->wrapnext
)
1525 term
->wrapnext
= FALSE
;
1529 term
->seen_disp_event
= TRUE
;
1532 compatibility(VT100
);
1536 compatibility(VT100
);
1540 if (term
->vt52_mode
)
1541 term
->termstate
= VT52_ESC
;
1543 compatibility(ANSIMIN
);
1544 term
->termstate
= SEEN_ESC
;
1545 term
->esc_query
= FALSE
;
1550 term
->wrapnext
= FALSE
;
1552 term
->seen_disp_event
= TRUE
;
1553 term
->paste_hold
= 0;
1555 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
1558 if (has_compat(SCOANSI
)) {
1559 move(term
, 0, 0, 0);
1560 erase_lots(term
, FALSE
, FALSE
, TRUE
);
1562 term
->wrapnext
= FALSE
;
1563 term
->seen_disp_event
= 1;
1567 compatibility(VT100
);
1569 if (term
->curs
.y
== term
->marg_b
)
1570 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1571 else if (term
->curs
.y
< term
->rows
- 1)
1573 if (term
->cfg
.lfhascr
)
1576 term
->wrapnext
= FALSE
;
1577 term
->seen_disp_event
= 1;
1578 term
->paste_hold
= 0;
1580 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
1584 pos old_curs
= term
->curs
;
1585 unsigned long *ldata
= lineptr(term
->curs
.y
);
1589 } while (term
->curs
.x
< term
->cols
- 1 &&
1590 !term
->tabs
[term
->curs
.x
]);
1592 if ((ldata
[term
->cols
] & LATTR_MODE
) != LATTR_NORM
) {
1593 if (term
->curs
.x
>= term
->cols
/ 2)
1594 term
->curs
.x
= term
->cols
/ 2 - 1;
1596 if (term
->curs
.x
>= term
->cols
)
1597 term
->curs
.x
= term
->cols
- 1;
1601 check_selection(term
, old_curs
, term
->curs
);
1603 term
->seen_disp_event
= TRUE
;
1607 switch (term
->termstate
) {
1609 /* Only graphic characters get this far;
1610 * ctrls are stripped above */
1611 if (term
->wrapnext
&& term
->wrap
) {
1612 term
->cpos
[1] |= LATTR_WRAPPED
;
1613 if (term
->curs
.y
== term
->marg_b
)
1614 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1615 else if (term
->curs
.y
< term
->rows
- 1)
1619 term
->wrapnext
= FALSE
;
1623 if (term
->selstate
!= NO_SELECTION
) {
1624 pos cursplus
= term
->curs
;
1626 check_selection(term
, term
->curs
, cursplus
);
1628 if (((c
& CSET_MASK
) == ATTR_ASCII
|| (c
& CSET_MASK
) == 0) &&
1630 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
1636 width
= wcwidth((wchar_t) c
);
1640 * If we're about to display a double-width
1641 * character starting in the rightmost
1642 * column, then we do something special
1643 * instead. We must print a space in the
1644 * last column of the screen, then wrap;
1645 * and we also set LATTR_WRAPPED2 which
1646 * instructs subsequent cut-and-pasting not
1647 * only to splice this line to the one
1648 * after it, but to ignore the space in the
1649 * last character position as well.
1650 * (Because what was actually output to the
1651 * terminal was presumably just a sequence
1652 * of CJK characters, and we don't want a
1653 * space to be pasted in the middle of
1654 * those just because they had the
1655 * misfortune to start in the wrong parity
1656 * column. xterm concurs.)
1658 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1659 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
1660 if (term
->curs
.x
== term
->cols
-1) {
1661 *term
->cpos
++ = ATTR_ASCII
| ' ' | term
->curr_attr
;
1662 *term
->cpos
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
1663 if (term
->curs
.y
== term
->marg_b
)
1664 scroll(term
, term
->marg_t
, term
->marg_b
,
1666 else if (term
->curs
.y
< term
->rows
- 1)
1670 /* Now we must check_boundary again, of course. */
1671 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1672 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
1674 *term
->cpos
++ = c
| term
->curr_attr
;
1675 *term
->cpos
++ = UCSWIDE
| term
->curr_attr
;
1679 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1680 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
1681 *term
->cpos
++ = c
| term
->curr_attr
;
1688 if (term
->curs
.x
== term
->cols
) {
1691 term
->wrapnext
= TRUE
;
1692 if (term
->wrap
&& term
->vt52_mode
) {
1693 term
->cpos
[1] |= LATTR_WRAPPED
;
1694 if (term
->curs
.y
== term
->marg_b
)
1695 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1696 else if (term
->curs
.y
< term
->rows
- 1)
1700 term
->wrapnext
= FALSE
;
1703 term
->seen_disp_event
= 1;
1708 * This state is virtually identical to SEEN_ESC, with the
1709 * exception that we have an OSC sequence in the pipeline,
1710 * and _if_ we see a backslash, we process it.
1714 term
->termstate
= TOPLEVEL
;
1717 /* else fall through */
1719 if (c
>= ' ' && c
<= '/') {
1720 if (term
->esc_query
)
1721 term
->esc_query
= -1;
1723 term
->esc_query
= c
;
1726 term
->termstate
= TOPLEVEL
;
1727 switch (ANSI(c
, term
->esc_query
)) {
1728 case '[': /* enter CSI mode */
1729 term
->termstate
= SEEN_CSI
;
1730 term
->esc_nargs
= 1;
1731 term
->esc_args
[0] = ARG_DEFAULT
;
1732 term
->esc_query
= FALSE
;
1734 case ']': /* xterm escape sequences */
1735 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1736 compatibility(OTHER
);
1737 term
->termstate
= SEEN_OSC
;
1738 term
->esc_args
[0] = 0;
1740 case '7': /* save cursor */
1741 compatibility(VT100
);
1742 save_cursor(term
, TRUE
);
1744 case '8': /* restore cursor */
1745 compatibility(VT100
);
1746 save_cursor(term
, FALSE
);
1747 term
->seen_disp_event
= TRUE
;
1750 compatibility(VT100
);
1751 term
->app_keypad_keys
= TRUE
;
1754 compatibility(VT100
);
1755 term
->app_keypad_keys
= FALSE
;
1757 case 'D': /* exactly equivalent to LF */
1758 compatibility(VT100
);
1759 if (term
->curs
.y
== term
->marg_b
)
1760 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1761 else if (term
->curs
.y
< term
->rows
- 1)
1764 term
->wrapnext
= FALSE
;
1765 term
->seen_disp_event
= TRUE
;
1767 case 'E': /* exactly equivalent to CR-LF */
1768 compatibility(VT100
);
1770 if (term
->curs
.y
== term
->marg_b
)
1771 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1772 else if (term
->curs
.y
< term
->rows
- 1)
1775 term
->wrapnext
= FALSE
;
1776 term
->seen_disp_event
= TRUE
;
1778 case 'M': /* reverse index - backwards LF */
1779 compatibility(VT100
);
1780 if (term
->curs
.y
== term
->marg_t
)
1781 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
1782 else if (term
->curs
.y
> 0)
1785 term
->wrapnext
= FALSE
;
1786 term
->seen_disp_event
= TRUE
;
1788 case 'Z': /* terminal type query */
1789 compatibility(VT100
);
1791 ldisc_send(term
->ldisc
, term
->id_string
,
1792 strlen(term
->id_string
), 0);
1794 case 'c': /* restore power-on settings */
1795 compatibility(VT100
);
1797 if (term
->ldisc
) /* cause ldisc to notice changes */
1798 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1799 if (term
->reset_132
) {
1800 if (!term
->cfg
.no_remote_resize
)
1801 request_resize(term
->frontend
, 80, term
->rows
);
1802 term
->reset_132
= 0;
1806 term
->seen_disp_event
= TRUE
;
1808 case 'H': /* set a tab */
1809 compatibility(VT100
);
1810 term
->tabs
[term
->curs
.x
] = TRUE
;
1813 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1814 compatibility(VT100
);
1816 unsigned long *ldata
;
1820 for (i
= 0; i
< term
->rows
; i
++) {
1822 for (j
= 0; j
< term
->cols
; j
++)
1823 ldata
[j
] = ATTR_DEFAULT
| 'E';
1824 ldata
[term
->cols
] = 0;
1827 term
->seen_disp_event
= TRUE
;
1828 scrtop
.x
= scrtop
.y
= 0;
1830 scrbot
.y
= term
->rows
;
1831 check_selection(term
, scrtop
, scrbot
);
1835 case ANSI('3', '#'):
1836 case ANSI('4', '#'):
1837 case ANSI('5', '#'):
1838 case ANSI('6', '#'):
1839 compatibility(VT100
);
1841 unsigned long nlattr
;
1842 unsigned long *ldata
;
1843 switch (ANSI(c
, term
->esc_query
)) {
1844 case ANSI('3', '#'):
1847 case ANSI('4', '#'):
1850 case ANSI('5', '#'):
1851 nlattr
= LATTR_NORM
;
1853 default: /* spiritually case ANSI('6', '#'): */
1854 nlattr
= LATTR_WIDE
;
1857 ldata
= lineptr(term
->curs
.y
);
1858 ldata
[term
->cols
] &= ~LATTR_MODE
;
1859 ldata
[term
->cols
] |= nlattr
;
1863 case ANSI('A', '('):
1864 compatibility(VT100
);
1865 if (!term
->cfg
.no_remote_charset
)
1866 term
->cset_attr
[0] = ATTR_GBCHR
;
1868 case ANSI('B', '('):
1869 compatibility(VT100
);
1870 if (!term
->cfg
.no_remote_charset
)
1871 term
->cset_attr
[0] = ATTR_ASCII
;
1873 case ANSI('0', '('):
1874 compatibility(VT100
);
1875 if (!term
->cfg
.no_remote_charset
)
1876 term
->cset_attr
[0] = ATTR_LINEDRW
;
1878 case ANSI('U', '('):
1879 compatibility(OTHER
);
1880 if (!term
->cfg
.no_remote_charset
)
1881 term
->cset_attr
[0] = ATTR_SCOACS
;
1884 case ANSI('A', ')'):
1885 compatibility(VT100
);
1886 if (!term
->cfg
.no_remote_charset
)
1887 term
->cset_attr
[1] = ATTR_GBCHR
;
1889 case ANSI('B', ')'):
1890 compatibility(VT100
);
1891 if (!term
->cfg
.no_remote_charset
)
1892 term
->cset_attr
[1] = ATTR_ASCII
;
1894 case ANSI('0', ')'):
1895 compatibility(VT100
);
1896 if (!term
->cfg
.no_remote_charset
)
1897 term
->cset_attr
[1] = ATTR_LINEDRW
;
1899 case ANSI('U', ')'):
1900 compatibility(OTHER
);
1901 if (!term
->cfg
.no_remote_charset
)
1902 term
->cset_attr
[1] = ATTR_SCOACS
;
1905 case ANSI('8', '%'): /* Old Linux code */
1906 case ANSI('G', '%'):
1907 compatibility(OTHER
);
1908 if (!term
->cfg
.no_remote_charset
)
1911 case ANSI('@', '%'):
1912 compatibility(OTHER
);
1913 if (!term
->cfg
.no_remote_charset
)
1919 term
->termstate
= TOPLEVEL
; /* default */
1921 if (term
->esc_nargs
<= ARGS_MAX
) {
1922 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
1923 term
->esc_args
[term
->esc_nargs
- 1] = 0;
1924 term
->esc_args
[term
->esc_nargs
- 1] =
1925 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
1927 term
->termstate
= SEEN_CSI
;
1928 } else if (c
== ';') {
1929 if (++term
->esc_nargs
<= ARGS_MAX
)
1930 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
1931 term
->termstate
= SEEN_CSI
;
1932 } else if (c
< '@') {
1933 if (term
->esc_query
)
1934 term
->esc_query
= -1;
1936 term
->esc_query
= TRUE
;
1938 term
->esc_query
= c
;
1939 term
->termstate
= SEEN_CSI
;
1941 switch (ANSI(c
, term
->esc_query
)) {
1942 case 'A': /* move up N lines */
1943 move(term
, term
->curs
.x
,
1944 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
1945 term
->seen_disp_event
= TRUE
;
1947 case 'e': /* move down N lines */
1948 compatibility(ANSI
);
1951 move(term
, term
->curs
.x
,
1952 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
1953 term
->seen_disp_event
= TRUE
;
1955 case ANSI('c', '>'): /* report xterm version */
1956 compatibility(OTHER
);
1957 /* this reports xterm version 136 so that VIM can
1958 use the drag messages from the mouse reporting */
1960 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
1962 case 'a': /* move right N cols */
1963 compatibility(ANSI
);
1966 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
1968 term
->seen_disp_event
= TRUE
;
1970 case 'D': /* move left N cols */
1971 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
1973 term
->seen_disp_event
= TRUE
;
1975 case 'E': /* move down N lines and CR */
1976 compatibility(ANSI
);
1978 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
1979 term
->seen_disp_event
= TRUE
;
1981 case 'F': /* move up N lines and CR */
1982 compatibility(ANSI
);
1984 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
1985 term
->seen_disp_event
= TRUE
;
1988 case '`': /* set horizontal posn */
1989 compatibility(ANSI
);
1990 move(term
, def(term
->esc_args
[0], 1) - 1,
1992 term
->seen_disp_event
= TRUE
;
1994 case 'd': /* set vertical posn */
1995 compatibility(ANSI
);
1996 move(term
, term
->curs
.x
,
1997 ((term
->dec_om ? term
->marg_t
: 0) +
1998 def(term
->esc_args
[0], 1) - 1),
1999 (term
->dec_om ?
2 : 0));
2000 term
->seen_disp_event
= TRUE
;
2003 case 'f': /* set horz and vert posns at once */
2004 if (term
->esc_nargs
< 2)
2005 term
->esc_args
[1] = ARG_DEFAULT
;
2006 move(term
, def(term
->esc_args
[1], 1) - 1,
2007 ((term
->dec_om ? term
->marg_t
: 0) +
2008 def(term
->esc_args
[0], 1) - 1),
2009 (term
->dec_om ?
2 : 0));
2010 term
->seen_disp_event
= TRUE
;
2012 case 'J': /* erase screen or parts of it */
2014 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2017 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
2020 term
->seen_disp_event
= TRUE
;
2022 case 'K': /* erase line or parts of it */
2024 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2027 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
2029 term
->seen_disp_event
= TRUE
;
2031 case 'L': /* insert lines */
2032 compatibility(VT102
);
2033 if (term
->curs
.y
<= term
->marg_b
)
2034 scroll(term
, term
->curs
.y
, term
->marg_b
,
2035 -def(term
->esc_args
[0], 1), FALSE
);
2037 term
->seen_disp_event
= TRUE
;
2039 case 'M': /* delete lines */
2040 compatibility(VT102
);
2041 if (term
->curs
.y
<= term
->marg_b
)
2042 scroll(term
, term
->curs
.y
, term
->marg_b
,
2043 def(term
->esc_args
[0], 1),
2046 term
->seen_disp_event
= TRUE
;
2048 case '@': /* insert chars */
2049 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2050 compatibility(VT102
);
2051 insch(term
, def(term
->esc_args
[0], 1));
2052 term
->seen_disp_event
= TRUE
;
2054 case 'P': /* delete chars */
2055 compatibility(VT102
);
2056 insch(term
, -def(term
->esc_args
[0], 1));
2057 term
->seen_disp_event
= TRUE
;
2059 case 'c': /* terminal type query */
2060 compatibility(VT100
);
2061 /* This is the response for a VT102 */
2063 ldisc_send(term
->ldisc
, term
->id_string
,
2064 strlen(term
->id_string
), 0);
2066 case 'n': /* cursor position query */
2068 if (term
->esc_args
[0] == 6) {
2070 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
2072 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
2073 } else if (term
->esc_args
[0] == 5) {
2074 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
2078 case 'h': /* toggle modes to high */
2080 compatibility(VT100
);
2083 for (i
= 0; i
< term
->esc_nargs
; i
++)
2084 toggle_mode(term
, term
->esc_args
[i
],
2085 term
->esc_query
, TRUE
);
2090 compatibility(VT100
);
2092 if (term
->esc_nargs
!= 1) break;
2093 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
2094 term
->printing
= TRUE
;
2095 term
->only_printing
= !term
->esc_query
;
2096 term
->print_state
= 0;
2097 term_print_setup(term
);
2098 } else if (term
->esc_args
[0] == 4 &&
2100 term_print_finish(term
);
2104 case 'l': /* toggle modes to low */
2106 compatibility(VT100
);
2109 for (i
= 0; i
< term
->esc_nargs
; i
++)
2110 toggle_mode(term
, term
->esc_args
[i
],
2111 term
->esc_query
, FALSE
);
2114 case 'g': /* clear tabs */
2115 compatibility(VT100
);
2116 if (term
->esc_nargs
== 1) {
2117 if (term
->esc_args
[0] == 0) {
2118 term
->tabs
[term
->curs
.x
] = FALSE
;
2119 } else if (term
->esc_args
[0] == 3) {
2121 for (i
= 0; i
< term
->cols
; i
++)
2122 term
->tabs
[i
] = FALSE
;
2126 case 'r': /* set scroll margins */
2127 compatibility(VT100
);
2128 if (term
->esc_nargs
<= 2) {
2130 top
= def(term
->esc_args
[0], 1) - 1;
2131 bot
= (term
->esc_nargs
<= 1
2132 || term
->esc_args
[1] == 0 ?
2134 def(term
->esc_args
[1], term
->rows
)) - 1;
2135 if (bot
>= term
->rows
)
2136 bot
= term
->rows
- 1;
2137 /* VTTEST Bug 9 - if region is less than 2 lines
2138 * don't change region.
2140 if (bot
- top
> 0) {
2145 * I used to think the cursor should be
2146 * placed at the top of the newly marginned
2147 * area. Apparently not: VMS TPU falls over
2150 * Well actually it should for
2153 term
->curs
.y
= (term
->dec_om ?
2156 term
->seen_disp_event
= TRUE
;
2160 case 'm': /* set graphics rendition */
2163 * A VT100 without the AVO only had one
2164 * attribute, either underline or
2165 * reverse video depending on the
2166 * cursor type, this was selected by
2170 * This is sometimes DIM, eg on the
2173 * This is sometimes INVIS various ANSI.
2175 * This like 22 disables BOLD, DIM and INVIS
2177 * The ANSI colours appear on any
2178 * terminal that has colour (obviously)
2179 * but the interaction between sgr0 and
2180 * the colours varies but is usually
2181 * related to the background colour
2182 * erase item. The interaction between
2183 * colour attributes and the mono ones
2184 * is also very implementation
2187 * The 39 and 49 attributes are likely
2188 * to be unimplemented.
2191 for (i
= 0; i
< term
->esc_nargs
; i
++) {
2192 switch (def(term
->esc_args
[i
], 0)) {
2193 case 0: /* restore defaults */
2194 term
->curr_attr
= ATTR_DEFAULT
;
2196 case 1: /* enable bold */
2197 compatibility(VT100AVO
);
2198 term
->curr_attr
|= ATTR_BOLD
;
2200 case 21: /* (enable double underline) */
2201 compatibility(OTHER
);
2202 case 4: /* enable underline */
2203 compatibility(VT100AVO
);
2204 term
->curr_attr
|= ATTR_UNDER
;
2206 case 5: /* enable blink */
2207 compatibility(VT100AVO
);
2208 term
->curr_attr
|= ATTR_BLINK
;
2210 case 7: /* enable reverse video */
2211 term
->curr_attr
|= ATTR_REVERSE
;
2213 case 10: /* SCO acs off */
2214 compatibility(SCOANSI
);
2215 if (term
->cfg
.no_remote_charset
) break;
2216 term
->sco_acs
= 0; break;
2217 case 11: /* SCO acs on */
2218 compatibility(SCOANSI
);
2219 if (term
->cfg
.no_remote_charset
) break;
2220 term
->sco_acs
= 1; break;
2221 case 12: /* SCO acs on, |0x80 */
2222 compatibility(SCOANSI
);
2223 if (term
->cfg
.no_remote_charset
) break;
2224 term
->sco_acs
= 2; break;
2225 case 22: /* disable bold */
2226 compatibility2(OTHER
, VT220
);
2227 term
->curr_attr
&= ~ATTR_BOLD
;
2229 case 24: /* disable underline */
2230 compatibility2(OTHER
, VT220
);
2231 term
->curr_attr
&= ~ATTR_UNDER
;
2233 case 25: /* disable blink */
2234 compatibility2(OTHER
, VT220
);
2235 term
->curr_attr
&= ~ATTR_BLINK
;
2237 case 27: /* disable reverse video */
2238 compatibility2(OTHER
, VT220
);
2239 term
->curr_attr
&= ~ATTR_REVERSE
;
2250 term
->curr_attr
&= ~ATTR_FGMASK
;
2252 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
2254 case 39: /* default-foreground */
2255 term
->curr_attr
&= ~ATTR_FGMASK
;
2256 term
->curr_attr
|= ATTR_DEFFG
;
2267 term
->curr_attr
&= ~ATTR_BGMASK
;
2269 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
2271 case 49: /* default-background */
2272 term
->curr_attr
&= ~ATTR_BGMASK
;
2273 term
->curr_attr
|= ATTR_DEFBG
;
2278 term
->erase_char
= (' ' | ATTR_ASCII
|
2284 case 's': /* save cursor */
2285 save_cursor(term
, TRUE
);
2287 case 'u': /* restore cursor */
2288 save_cursor(term
, FALSE
);
2289 term
->seen_disp_event
= TRUE
;
2291 case 't': /* set page size - ie window height */
2293 * VT340/VT420 sequence DECSLPP, DEC only allows values
2294 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2295 * illegal values (eg first arg 1..9) for window changing
2298 if (term
->esc_nargs
<= 1
2299 && (term
->esc_args
[0] < 1 ||
2300 term
->esc_args
[0] >= 24)) {
2301 compatibility(VT340TEXT
);
2302 if (!term
->cfg
.no_remote_resize
)
2303 request_resize(term
->frontend
, term
->cols
,
2304 def(term
->esc_args
[0], 24));
2306 } else if (term
->esc_nargs
>= 1 &&
2307 term
->esc_args
[0] >= 1 &&
2308 term
->esc_args
[0] < 24) {
2309 compatibility(OTHER
);
2311 switch (term
->esc_args
[0]) {
2315 set_iconic(term
->frontend
, FALSE
);
2318 set_iconic(term
->frontend
, TRUE
);
2321 if (term
->esc_nargs
>= 3) {
2322 if (!term
->cfg
.no_remote_resize
)
2323 move_window(term
->frontend
,
2324 def(term
->esc_args
[1], 0),
2325 def(term
->esc_args
[2], 0));
2329 /* We should resize the window to a given
2330 * size in pixels here, but currently our
2331 * resizing code isn't healthy enough to
2336 set_zorder(term
->frontend
, TRUE
);
2339 /* move to bottom */
2340 set_zorder(term
->frontend
, FALSE
);
2343 refresh_window(term
->frontend
);
2346 if (term
->esc_nargs
>= 3) {
2347 if (!term
->cfg
.no_remote_resize
)
2348 request_resize(term
->frontend
,
2349 def(term
->esc_args
[2], term
->cfg
.width
),
2350 def(term
->esc_args
[1], term
->cfg
.height
));
2354 if (term
->esc_nargs
>= 2)
2355 set_zoomed(term
->frontend
,
2361 ldisc_send(term
->ldisc
,
2362 is_iconic(term
->frontend
) ?
2363 "\033[1t" : "\033[2t", 4, 0);
2367 get_window_pos(term
->frontend
, &x
, &y
);
2368 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
2369 ldisc_send(term
->ldisc
, buf
, len
, 0);
2374 get_window_pixels(term
->frontend
, &x
, &y
);
2375 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
2376 ldisc_send(term
->ldisc
, buf
, len
, 0);
2381 len
= sprintf(buf
, "\033[8;%d;%dt",
2382 term
->rows
, term
->cols
);
2383 ldisc_send(term
->ldisc
, buf
, len
, 0);
2388 * Hmmm. Strictly speaking we
2389 * should return `the size of the
2390 * screen in characters', but
2391 * that's not easy: (a) window
2392 * furniture being what it is it's
2393 * hard to compute, and (b) in
2394 * resize-font mode maximising the
2395 * window wouldn't change the
2396 * number of characters. *shrug*. I
2397 * think we'll ignore it for the
2398 * moment and see if anyone
2399 * complains, and then ask them
2400 * what they would like it to do.
2405 p
= get_window_title(term
->frontend
, TRUE
);
2407 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
2408 ldisc_send(term
->ldisc
, p
, len
, 0);
2409 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
2414 p
= get_window_title(term
->frontend
,FALSE
);
2416 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
2417 ldisc_send(term
->ldisc
, p
, len
, 0);
2418 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
2425 compatibility(SCOANSI
);
2426 scroll(term
, term
->marg_t
, term
->marg_b
,
2427 def(term
->esc_args
[0], 1), TRUE
);
2429 term
->wrapnext
= FALSE
;
2430 term
->seen_disp_event
= TRUE
;
2433 compatibility(SCOANSI
);
2434 scroll(term
, term
->marg_t
, term
->marg_b
,
2435 -def(term
->esc_args
[0], 1), TRUE
);
2437 term
->wrapnext
= FALSE
;
2438 term
->seen_disp_event
= TRUE
;
2440 case ANSI('|', '*'):
2441 /* VT420 sequence DECSNLS
2442 * Set number of lines on screen
2443 * VT420 uses VGA like hardware and can support any size in
2444 * reasonable range (24..49 AIUI) with no default specified.
2446 compatibility(VT420
);
2447 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
2448 if (!term
->cfg
.no_remote_resize
)
2449 request_resize(term
->frontend
, term
->cols
,
2450 def(term
->esc_args
[0],
2455 case ANSI('|', '$'):
2456 /* VT340/VT420 sequence DECSCPP
2457 * Set number of columns per page
2458 * Docs imply range is only 80 or 132, but I'll allow any.
2460 compatibility(VT340TEXT
);
2461 if (term
->esc_nargs
<= 1) {
2462 if (!term
->cfg
.no_remote_resize
)
2463 request_resize(term
->frontend
,
2464 def(term
->esc_args
[0],
2465 term
->cfg
.width
), term
->rows
);
2469 case 'X': /* write N spaces w/o moving cursor */
2470 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2471 compatibility(ANSIMIN
);
2473 int n
= def(term
->esc_args
[0], 1);
2475 unsigned long *p
= term
->cpos
;
2476 if (n
> term
->cols
- term
->curs
.x
)
2477 n
= term
->cols
- term
->curs
.x
;
2478 cursplus
= term
->curs
;
2480 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2481 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
2482 check_selection(term
, term
->curs
, cursplus
);
2484 *p
++ = term
->erase_char
;
2485 term
->seen_disp_event
= TRUE
;
2488 case 'x': /* report terminal characteristics */
2489 compatibility(VT100
);
2492 int i
= def(term
->esc_args
[0], 0);
2493 if (i
== 0 || i
== 1) {
2494 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
2496 ldisc_send(term
->ldisc
, buf
, 20, 0);
2500 case 'Z': /* BackTab for xterm */
2501 compatibility(OTHER
);
2503 int i
= def(term
->esc_args
[0], 1);
2504 pos old_curs
= term
->curs
;
2506 for(;i
>0 && term
->curs
.x
>0; i
--) {
2509 } while (term
->curs
.x
>0 &&
2510 !term
->tabs
[term
->curs
.x
]);
2513 check_selection(term
, old_curs
, term
->curs
);
2516 case ANSI('L', '='):
2517 compatibility(OTHER
);
2518 term
->use_bce
= (term
->esc_args
[0] <= 0);
2519 term
->erase_char
= ERASE_CHAR
;
2521 term
->erase_char
= (' ' | ATTR_ASCII
|
2523 (ATTR_FGMASK
| ATTR_BGMASK
)));
2525 case ANSI('E', '='):
2526 compatibility(OTHER
);
2527 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
2529 case ANSI('p', '"'):
2531 * Allow the host to make this emulator a
2532 * 'perfect' VT102. This first appeared in
2533 * the VT220, but we do need to get back to
2534 * PuTTY mode so I won't check it.
2536 * The arg in 40..42,50 are a PuTTY extension.
2537 * The 2nd arg, 8bit vs 7bit is not checked.
2539 * Setting VT102 mode should also change
2540 * the Fkeys to generate PF* codes as a
2541 * real VT102 has no Fkeys. The VT220 does
2542 * this, F11..F13 become ESC,BS,LF other
2543 * Fkeys send nothing.
2545 * Note ESC c will NOT change this!
2548 switch (term
->esc_args
[0]) {
2550 term
->compatibility_level
&= ~TM_VTXXX
;
2551 term
->compatibility_level
|= TM_VT102
;
2554 term
->compatibility_level
&= ~TM_VTXXX
;
2555 term
->compatibility_level
|= TM_VT220
;
2559 if (term
->esc_args
[0] > 60 &&
2560 term
->esc_args
[0] < 70)
2561 term
->compatibility_level
|= TM_VTXXX
;
2565 term
->compatibility_level
&= TM_VTXXX
;
2568 term
->compatibility_level
= TM_PUTTY
;
2571 term
->compatibility_level
= TM_SCOANSI
;
2575 term
->compatibility_level
= TM_PUTTY
;
2581 /* Change the response to CSI c */
2582 if (term
->esc_args
[0] == 50) {
2585 strcpy(term
->id_string
, "\033[?");
2586 for (i
= 1; i
< term
->esc_nargs
; i
++) {
2588 strcat(term
->id_string
, ";");
2589 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
2590 strcat(term
->id_string
, lbuf
);
2592 strcat(term
->id_string
, "c");
2595 /* Is this a good idea ?
2596 * Well we should do a soft reset at this point ...
2598 if (!has_compat(VT420
) && has_compat(VT100
)) {
2599 if (!term
->cfg
.no_remote_resize
) {
2600 if (term
->reset_132
)
2601 request_resize(132, 24);
2603 request_resize(80, 24);
2611 term
->osc_w
= FALSE
;
2613 case 'P': /* Linux palette sequence */
2614 term
->termstate
= SEEN_OSC_P
;
2615 term
->osc_strlen
= 0;
2617 case 'R': /* Linux palette reset */
2618 palette_reset(term
->frontend
);
2619 term_invalidate(term
);
2620 term
->termstate
= TOPLEVEL
;
2622 case 'W': /* word-set */
2623 term
->termstate
= SEEN_OSC_W
;
2636 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
2640 * Grotty hack to support xterm and DECterm title
2641 * sequences concurrently.
2643 if (term
->esc_args
[0] == 2) {
2644 term
->esc_args
[0] = 1;
2647 /* else fall through */
2649 term
->termstate
= OSC_STRING
;
2650 term
->osc_strlen
= 0;
2655 * This OSC stuff is EVIL. It takes just one character to get into
2656 * sysline mode and it's not initially obvious how to get out.
2657 * So I've added CR and LF as string aborts.
2658 * This shouldn't effect compatibility as I believe embedded
2659 * control characters are supposed to be interpreted (maybe?)
2660 * and they don't display anything useful anyway.
2664 if (c
== '\012' || c
== '\015') {
2665 term
->termstate
= TOPLEVEL
;
2666 } else if (c
== 0234 || c
== '\007') {
2668 * These characters terminate the string; ST and BEL
2669 * terminate the sequence and trigger instant
2670 * processing of it, whereas ESC goes back to SEEN_ESC
2671 * mode unless it is followed by \, in which case it is
2672 * synonymous with ST in the first place.
2675 term
->termstate
= TOPLEVEL
;
2676 } else if (c
== '\033')
2677 term
->termstate
= OSC_MAYBE_ST
;
2678 else if (term
->osc_strlen
< OSC_STR_MAX
)
2679 term
->osc_string
[term
->osc_strlen
++] = c
;
2683 int max
= (term
->osc_strlen
== 0 ?
21 : 16);
2685 if (c
>= '0' && c
<= '9')
2687 else if (c
>= 'A' && c
<= 'A' + max
- 10)
2689 else if (c
>= 'a' && c
<= 'a' + max
- 10)
2692 term
->termstate
= TOPLEVEL
;
2695 term
->osc_string
[term
->osc_strlen
++] = val
;
2696 if (term
->osc_strlen
>= 7) {
2697 palette_set(term
->frontend
, term
->osc_string
[0],
2698 term
->osc_string
[1] * 16 + term
->osc_string
[2],
2699 term
->osc_string
[3] * 16 + term
->osc_string
[4],
2700 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
2701 term_invalidate(term
);
2702 term
->termstate
= TOPLEVEL
;
2718 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
2721 term
->termstate
= OSC_STRING
;
2722 term
->osc_strlen
= 0;
2726 term
->termstate
= TOPLEVEL
;
2727 term
->seen_disp_event
= TRUE
;
2730 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
2733 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
2736 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
2739 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
2742 * From the VT100 Manual
2743 * NOTE: The special graphics characters in the VT100
2744 * are different from those in the VT52
2746 * From VT102 manual:
2747 * 137 _ Blank - Same
2748 * 140 ` Reserved - Humm.
2749 * 141 a Solid rectangle - Similar
2750 * 142 b 1/ - Top half of fraction for the
2751 * 143 c 3/ - subscript numbers below.
2754 * 146 f Degrees - Same
2755 * 147 g Plus or minus - Same
2757 * 151 i Ellipsis (dots)
2760 * 154 l Bar at scan 0
2761 * 155 m Bar at scan 1
2762 * 156 n Bar at scan 2
2763 * 157 o Bar at scan 3 - Similar
2764 * 160 p Bar at scan 4 - Similar
2765 * 161 q Bar at scan 5 - Similar
2766 * 162 r Bar at scan 6 - Same
2767 * 163 s Bar at scan 7 - Similar
2782 term
->cset_attr
[term
->cset
= 0] = ATTR_LINEDRW
;
2785 term
->cset_attr
[term
->cset
= 0] = ATTR_ASCII
;
2788 move(term
, 0, 0, 0);
2791 if (term
->curs
.y
== 0)
2792 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
2793 else if (term
->curs
.y
> 0)
2796 term
->wrapnext
= FALSE
;
2799 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2803 erase_lots(term
, TRUE
, FALSE
, TRUE
);
2807 /* XXX Print cursor line */
2810 /* XXX Start controller mode */
2813 /* XXX Stop controller mode */
2817 term
->termstate
= VT52_Y1
;
2821 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
2824 term
->app_keypad_keys
= TRUE
;
2827 term
->app_keypad_keys
= FALSE
;
2830 /* XXX This should switch to VT100 mode not current or default
2831 * VT mode. But this will only have effect in a VT220+
2834 term
->vt52_mode
= FALSE
;
2835 term
->blink_is_real
= term
->cfg
.blinktext
;
2839 /* XXX Enter auto print mode */
2842 /* XXX Exit auto print mode */
2845 /* XXX Print screen */
2851 /* compatibility(ATARI) */
2852 move(term
, 0, 0, 0);
2853 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2857 /* compatibility(ATARI) */
2858 if (term
->curs
.y
<= term
->marg_b
)
2859 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
2862 /* compatibility(ATARI) */
2863 if (term
->curs
.y
<= term
->marg_b
)
2864 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
2867 /* compatibility(ATARI) */
2868 term
->termstate
= VT52_FG
;
2871 /* compatibility(ATARI) */
2872 term
->termstate
= VT52_BG
;
2875 /* compatibility(ATARI) */
2876 erase_lots(term
, FALSE
, TRUE
, FALSE
);
2880 /* compatibility(ATARI) */
2881 term
->cursor_on
= TRUE
;
2884 /* compatibility(ATARI) */
2885 term
->cursor_on
= FALSE
;
2887 /* case 'j': Save cursor position - broken on ST */
2888 /* case 'k': Restore cursor position */
2890 /* compatibility(ATARI) */
2891 erase_lots(term
, TRUE
, TRUE
, TRUE
);
2893 term
->wrapnext
= FALSE
;
2897 /* compatibility(ATARI) */
2898 erase_lots(term
, TRUE
, TRUE
, FALSE
);
2901 /* compatibility(ATARI) */
2902 term
->curr_attr
|= ATTR_REVERSE
;
2905 /* compatibility(ATARI) */
2906 term
->curr_attr
&= ~ATTR_REVERSE
;
2908 case 'v': /* wrap Autowrap on - Wyse style */
2909 /* compatibility(ATARI) */
2912 case 'w': /* Autowrap off */
2913 /* compatibility(ATARI) */
2918 /* compatibility(OTHER) */
2919 term
->vt52_bold
= FALSE
;
2920 term
->curr_attr
= ATTR_DEFAULT
;
2922 term
->erase_char
= (' ' | ATTR_ASCII
|
2924 (ATTR_FGMASK
| ATTR_BGMASK
)));
2927 /* compatibility(VI50) */
2928 term
->curr_attr
|= ATTR_UNDER
;
2931 /* compatibility(VI50) */
2932 term
->curr_attr
&= ~ATTR_UNDER
;
2935 /* compatibility(VI50) */
2936 term
->vt52_bold
= TRUE
;
2937 term
->curr_attr
|= ATTR_BOLD
;
2940 /* compatibility(VI50) */
2941 term
->vt52_bold
= FALSE
;
2942 term
->curr_attr
&= ~ATTR_BOLD
;
2948 term
->termstate
= VT52_Y2
;
2949 move(term
, term
->curs
.x
, c
- ' ', 0);
2952 term
->termstate
= TOPLEVEL
;
2953 move(term
, c
- ' ', term
->curs
.y
, 0);
2958 term
->termstate
= TOPLEVEL
;
2959 term
->curr_attr
&= ~ATTR_FGMASK
;
2960 term
->curr_attr
&= ~ATTR_BOLD
;
2961 term
->curr_attr
|= (c
& 0x7) << ATTR_FGSHIFT
;
2962 if ((c
& 0x8) || term
->vt52_bold
)
2963 term
->curr_attr
|= ATTR_BOLD
;
2966 term
->erase_char
= (' ' | ATTR_ASCII
|
2968 (ATTR_FGMASK
| ATTR_BGMASK
)));
2971 term
->termstate
= TOPLEVEL
;
2972 term
->curr_attr
&= ~ATTR_BGMASK
;
2973 term
->curr_attr
&= ~ATTR_BLINK
;
2974 term
->curr_attr
|= (c
& 0x7) << ATTR_BGSHIFT
;
2976 /* Note: bold background */
2978 term
->curr_attr
|= ATTR_BLINK
;
2981 term
->erase_char
= (' ' | ATTR_ASCII
|
2983 (ATTR_FGMASK
| ATTR_BGMASK
)));
2986 default: break; /* placate gcc warning about enum use */
2988 if (term
->selstate
!= NO_SELECTION
) {
2989 pos cursplus
= term
->curs
;
2991 check_selection(term
, term
->curs
, cursplus
);
2995 term_print_flush(term
);
3000 * Compare two lines to determine whether they are sufficiently
3001 * alike to scroll-optimise one to the other. Return the degree of
3004 static int linecmp(Terminal
*term
, unsigned long *a
, unsigned long *b
)
3008 for (i
= n
= 0; i
< term
->cols
; i
++)
3009 n
+= (*a
++ == *b
++);
3015 * Given a context, update the window. Out of paranoia, we don't
3016 * allow WM_PAINT responses to do scrolling optimisations.
3018 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
3020 int i
, j
, our_curs_y
, our_curs_x
;
3021 unsigned long rv
, cursor
;
3024 long cursor_background
= ERASE_CHAR
;
3025 unsigned long ticks
;
3028 * Check the visual bell state.
3030 if (term
->in_vbell
) {
3031 ticks
= GETTICKCOUNT();
3032 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
3033 term
->in_vbell
= FALSE
;
3036 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
3039 * screen array, disptop, scrtop,
3041 * cfg.blinkpc, blink_is_real, tblinker,
3042 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
3045 /* Has the cursor position or type changed ? */
3046 if (term
->cursor_on
) {
3047 if (term
->has_focus
) {
3048 if (term
->blinker
|| !term
->cfg
.blink_cur
)
3049 cursor
= TATTR_ACTCURS
;
3053 cursor
= TATTR_PASCURS
;
3055 cursor
|= TATTR_RIGHTCURS
;
3058 our_curs_y
= term
->curs
.y
- term
->disptop
;
3061 * Adjust the cursor position in the case where it's
3062 * resting on the right-hand half of a CJK wide character.
3063 * xterm's behaviour here, which seems adequate to me, is
3064 * to display the cursor covering the _whole_ character,
3065 * exactly as if it were one space to the left.
3067 unsigned long *ldata
= lineptr(term
->curs
.y
);
3068 our_curs_x
= term
->curs
.x
;
3069 if (our_curs_x
> 0 &&
3070 (ldata
[our_curs_x
] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3074 if (term
->dispcurs
&& (term
->curstype
!= cursor
||
3076 term
->disptext
+ our_curs_y
* (term
->cols
+ 1) +
3078 if (term
->dispcurs
> term
->disptext
&&
3079 (*term
->dispcurs
& (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3080 term
->dispcurs
[-1] |= ATTR_INVALID
;
3081 if ( (term
->dispcurs
[1] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3082 term
->dispcurs
[1] |= ATTR_INVALID
;
3083 *term
->dispcurs
|= ATTR_INVALID
;
3086 term
->dispcurs
= NULL
;
3088 /* The normal screen data */
3089 for (i
= 0; i
< term
->rows
; i
++) {
3090 unsigned long *ldata
;
3092 int idx
, dirty_line
, dirty_run
, selected
;
3093 unsigned long attr
= 0;
3094 int updated_line
= 0;
3097 int last_run_dirty
= 0;
3099 scrpos
.y
= i
+ term
->disptop
;
3100 ldata
= lineptr(scrpos
.y
);
3101 lattr
= (ldata
[term
->cols
] & LATTR_MODE
);
3103 idx
= i
* (term
->cols
+ 1);
3104 dirty_run
= dirty_line
= (ldata
[term
->cols
] !=
3105 term
->disptext
[idx
+ term
->cols
]);
3106 term
->disptext
[idx
+ term
->cols
] = ldata
[term
->cols
];
3108 for (j
= 0; j
< term
->cols
; j
++, idx
++) {
3109 unsigned long tattr
, tchar
;
3110 unsigned long *d
= ldata
+ j
;
3114 tchar
= (*d
& (CHAR_MASK
| CSET_MASK
));
3115 tattr
= (*d
& (ATTR_MASK
^ CSET_MASK
));
3116 switch (tchar
& CSET_MASK
) {
3118 tchar
= unitab_line
[tchar
& 0xFF];
3121 tchar
= unitab_xterm
[tchar
& 0xFF];
3124 tchar
= unitab_scoacs
[tchar
&0xFF];
3127 tattr
|= (tchar
& CSET_MASK
);
3129 if ((d
[1] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3132 /* Video reversing things */
3133 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
3134 if (term
->seltype
== LEXICOGRAPHIC
)
3135 selected
= (posle(term
->selstart
, scrpos
) &&
3136 poslt(scrpos
, term
->selend
));
3138 selected
= (posPle(term
->selstart
, scrpos
) &&
3139 posPlt(scrpos
, term
->selend
));
3143 ^ (selected ? ATTR_REVERSE
: 0));
3145 /* 'Real' blinking ? */
3146 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
3147 if (term
->has_focus
&& term
->tblinker
) {
3149 tattr
&= ~CSET_MASK
;
3152 tattr
&= ~ATTR_BLINK
;
3156 * Check the font we'll _probably_ be using to see if
3157 * the character is wide when we don't want it to be.
3159 if ((tchar
| tattr
) != (term
->disptext
[idx
]& ~ATTR_NARROW
)) {
3160 if ((tattr
& ATTR_WIDE
) == 0 &&
3161 char_width(ctx
, (tchar
| tattr
) & 0xFFFF) == 2)
3162 tattr
|= ATTR_NARROW
;
3163 } else if (term
->disptext
[idx
]&ATTR_NARROW
)
3164 tattr
|= ATTR_NARROW
;
3166 /* Cursor here ? Save the 'background' */
3167 if (i
== our_curs_y
&& j
== our_curs_x
) {
3168 cursor_background
= tattr
| tchar
;
3169 term
->dispcurs
= term
->disptext
+ idx
;
3172 if ((term
->disptext
[idx
] ^ tattr
) & ATTR_WIDE
)
3175 break_run
= (((tattr
^ attr
) & term
->attr_mask
) ||
3176 j
- start
>= sizeof(ch
));
3178 /* Special hack for VT100 Linedraw glyphs */
3179 if ((attr
& CSET_MASK
) == 0x2300 && tchar
>= 0xBA
3180 && tchar
<= 0xBD) break_run
= TRUE
;
3182 if (!dbcs_screenfont
&& !dirty_line
) {
3183 if ((tchar
| tattr
) == term
->disptext
[idx
])
3185 else if (!dirty_run
&& ccount
== 1)
3190 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
3191 do_text(ctx
, start
, i
, ch
, ccount
, attr
, lattr
);
3197 if (dbcs_screenfont
)
3198 last_run_dirty
= dirty_run
;
3199 dirty_run
= dirty_line
;
3202 if ((tchar
| tattr
) != term
->disptext
[idx
])
3204 ch
[ccount
++] = (char) tchar
;
3205 term
->disptext
[idx
] = tchar
| tattr
;
3207 /* If it's a wide char step along to the next one. */
3208 if (tattr
& ATTR_WIDE
) {
3209 if (++j
< term
->cols
) {
3213 * By construction above, the cursor should not
3214 * be on the right-hand half of this character.
3217 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
3218 if (term
->disptext
[idx
] != *d
)
3220 term
->disptext
[idx
] = *d
;
3224 if (dirty_run
&& ccount
> 0) {
3225 do_text(ctx
, start
, i
, ch
, ccount
, attr
, lattr
);
3229 /* Cursor on this line ? (and changed) */
3230 if (i
== our_curs_y
&& (term
->curstype
!= cursor
|| updated_line
)) {
3231 ch
[0] = (char) (cursor_background
& CHAR_MASK
);
3232 attr
= (cursor_background
& ATTR_MASK
) | cursor
;
3233 do_cursor(ctx
, our_curs_x
, i
, ch
, 1, attr
, lattr
);
3234 term
->curstype
= cursor
;
3240 * Flick the switch that says if blinking things should be shown or hidden.
3243 void term_blink(Terminal
*term
, int flg
)
3245 long now
, blink_diff
;
3247 now
= GETTICKCOUNT();
3248 blink_diff
= now
- term
->last_tblink
;
3250 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3251 if (blink_diff
< 0 || blink_diff
> (TICKSPERSEC
* 9 / 20)) {
3252 term
->last_tblink
= now
;
3253 term
->tblinker
= !term
->tblinker
;
3258 term
->last_blink
= now
;
3262 blink_diff
= now
- term
->last_blink
;
3264 /* Make sure the cursor blinks no faster than system blink rate */
3265 if (blink_diff
>= 0 && blink_diff
< (long) CURSORBLINK
)
3268 term
->last_blink
= now
;
3269 term
->blinker
= !term
->blinker
;
3273 * Invalidate the whole screen so it will be repainted in full.
3275 void term_invalidate(Terminal
*term
)
3279 for (i
= 0; i
< term
->rows
* (term
->cols
+ 1); i
++)
3280 term
->disptext
[i
] = ATTR_INVALID
;
3284 * Paint the window in response to a WM_PAINT message.
3286 void term_paint(Terminal
*term
, Context ctx
,
3287 int left
, int top
, int right
, int bottom
, int immediately
)
3290 if (left
< 0) left
= 0;
3291 if (top
< 0) top
= 0;
3292 if (right
>= term
->cols
) right
= term
->cols
-1;
3293 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
3295 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
3296 if ((term
->disptext
[i
* (term
->cols
+ 1) + term
->cols
] &
3297 LATTR_MODE
) == LATTR_NORM
)
3298 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
3299 term
->disptext
[i
* (term
->cols
+ 1) + j
] = ATTR_INVALID
;
3301 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
3302 term
->disptext
[i
* (term
->cols
+ 1) + j
] = ATTR_INVALID
;
3305 /* This should happen soon enough, also for some reason it sometimes
3306 * fails to actually do anything when re-sizing ... painting the wrong
3310 do_paint (term
, ctx
, FALSE
);
3314 * Attempt to scroll the scrollback. The second parameter gives the
3315 * position we want to scroll to; the first is +1 to denote that
3316 * this position is relative to the beginning of the scrollback, -1
3317 * to denote it is relative to the end, and 0 to denote that it is
3318 * relative to the current position.
3320 void term_scroll(Terminal
*term
, int rel
, int where
)
3322 int sbtop
= -count234(term
->scrollback
);
3323 #ifdef OPTIMISE_SCROLL
3324 int olddisptop
= term
->disptop
;
3326 #endif /* OPTIMISE_SCROLL */
3328 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
3329 if (term
->disptop
< sbtop
)
3330 term
->disptop
= sbtop
;
3331 if (term
->disptop
> 0)
3334 #ifdef OPTIMISE_SCROLL
3335 shift
= (term
->disptop
- olddisptop
);
3336 if (shift
< term
->rows
&& shift
> -term
->rows
)
3337 scroll_display(term
, 0, term
->rows
- 1, shift
);
3338 #endif /* OPTIMISE_SCROLL */
3342 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
)
3345 wchar_t *wbptr
; /* where next char goes within workbuf */
3347 int wblen
= 0; /* workbuf len */
3348 int buflen
; /* amount of memory allocated to workbuf */
3350 buflen
= 5120; /* Default size */
3351 workbuf
= smalloc(buflen
* sizeof(wchar_t));
3352 wbptr
= workbuf
; /* start filling here */
3353 old_top_x
= top
.x
; /* needed for rect==1 */
3355 while (poslt(top
, bottom
)) {
3357 unsigned long *ldata
= lineptr(top
.y
);
3361 * nlpos will point at the maximum position on this line we
3362 * should copy up to. So we start it at the end of the
3366 nlpos
.x
= term
->cols
;
3369 * ... move it backwards if there's unused space at the end
3370 * of the line (and also set `nl' if this is the case,
3371 * because in normal selection mode this means we need a
3372 * newline at the end)...
3374 if (!(ldata
[term
->cols
] & LATTR_WRAPPED
)) {
3375 while (((ldata
[nlpos
.x
- 1] & 0xFF) == 0x20 ||
3376 (DIRECT_CHAR(ldata
[nlpos
.x
- 1]) &&
3377 (ldata
[nlpos
.x
- 1] & CHAR_MASK
) == 0x20))
3378 && poslt(top
, nlpos
))
3380 if (poslt(nlpos
, bottom
))
3382 } else if (ldata
[term
->cols
] & LATTR_WRAPPED2
) {
3383 /* Ignore the last char on the line in a WRAPPED2 line. */
3388 * ... and then clip it to the terminal x coordinate if
3389 * we're doing rectangular selection. (In this case we
3390 * still did the above, so that copying e.g. the right-hand
3391 * column from a table doesn't fill with spaces on the
3395 if (nlpos
.x
> bottom
.x
)
3397 nl
= (top
.y
< bottom
.y
);
3400 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
3403 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
3405 wchar_t cbuf
[16], *p
;
3406 int uc
= (ldata
[top
.x
] & 0xFFFF);
3409 if (uc
== UCSWIDE
) {
3414 switch (uc
& CSET_MASK
) {
3416 if (!term
->cfg
.rawcnp
) {
3417 uc
= unitab_xterm
[uc
& 0xFF];
3421 uc
= unitab_line
[uc
& 0xFF];
3424 uc
= unitab_scoacs
[uc
&0xFF];
3427 switch (uc
& CSET_MASK
) {
3429 uc
= unitab_font
[uc
& 0xFF];
3432 uc
= unitab_oemcp
[uc
& 0xFF];
3436 set
= (uc
& CSET_MASK
);
3437 c
= (uc
& CHAR_MASK
);
3441 if (DIRECT_FONT(uc
)) {
3442 if (c
>= ' ' && c
!= 0x7F) {
3446 if (is_dbcs_leadbyte(font_codepage
, (BYTE
) c
)) {
3448 buf
[1] = (char) (0xFF & ldata
[top
.x
+ 1]);
3449 rv
= mb_to_wc(font_codepage
, 0, buf
, 2, wbuf
, 4);
3453 rv
= mb_to_wc(font_codepage
, 0, buf
, 1, wbuf
, 4);
3457 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
3464 for (p
= cbuf
; *p
; p
++) {
3465 /* Enough overhead for trailing NL and nul */
3466 if (wblen
>= buflen
- 16) {
3469 sizeof(wchar_t) * (buflen
+= 100));
3470 wbptr
= workbuf
+ wblen
;
3479 for (i
= 0; i
< sel_nl_sz
; i
++) {
3481 *wbptr
++ = sel_nl
[i
];
3485 top
.x
= rect ? old_top_x
: 0;
3487 #if SELECTION_NUL_TERMINATED
3491 write_clip(term
->frontend
, workbuf
, wblen
, FALSE
); /* transfer to clipbd */
3492 if (buflen
> 0) /* indicates we allocated this buffer */
3496 void term_copyall(Terminal
*term
)
3499 top
.y
= -count234(term
->scrollback
);
3501 clipme(term
, top
, term
->curs
, 0);
3505 * The wordness array is mainly for deciding the disposition of the
3506 * US-ASCII characters.
3508 static int wordtype(Terminal
*term
, int uc
)
3511 int start
, end
, ctype
;
3513 static const struct ucsword ucs_words
[] = {
3519 0x037e, 0x037e, 1}, /* Greek question mark */
3521 0x0387, 0x0387, 1}, /* Greek ano teleia */
3523 0x055a, 0x055f, 1}, /* Armenian punctuation */
3525 0x0589, 0x0589, 1}, /* Armenian full stop */
3527 0x0700, 0x070d, 1}, /* Syriac punctuation */
3529 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3531 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3533 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3535 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3537 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3539 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3541 0x2000, 0x200a, 0}, /* Various spaces */
3543 0x2070, 0x207f, 2}, /* superscript */
3545 0x2080, 0x208f, 2}, /* subscript */
3547 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3549 0x3000, 0x3000, 0}, /* ideographic space */
3551 0x3001, 0x3020, 1}, /* ideographic punctuation */
3553 0x303f, 0x309f, 3}, /* Hiragana */
3555 0x30a0, 0x30ff, 3}, /* Katakana */
3557 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3559 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3561 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3563 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3565 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3567 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3569 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3571 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3573 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3577 const struct ucsword
*wptr
;
3579 uc
&= (CSET_MASK
| CHAR_MASK
);
3581 switch (uc
& CSET_MASK
) {
3583 uc
= unitab_xterm
[uc
& 0xFF];
3586 uc
= unitab_line
[uc
& 0xFF];
3589 uc
= unitab_scoacs
[uc
&0xFF];
3592 switch (uc
& CSET_MASK
) {
3594 uc
= unitab_font
[uc
& 0xFF];
3597 uc
= unitab_oemcp
[uc
& 0xFF];
3601 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3602 * fail as there's such a thing as a double width space. :-(
3604 if (dbcs_screenfont
&& font_codepage
== line_codepage
)
3608 return term
->wordness
[uc
];
3610 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
3611 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
3619 * Spread the selection outwards according to the selection mode.
3621 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
3623 unsigned long *ldata
;
3625 int topy
= -count234(term
->scrollback
);
3627 ldata
= lineptr(p
.y
);
3629 switch (term
->selmode
) {
3632 * In this mode, every character is a separate unit, except
3633 * for runs of spaces at the end of a non-wrapping line.
3635 if (!(ldata
[term
->cols
] & LATTR_WRAPPED
)) {
3636 unsigned long *q
= ldata
+ term
->cols
;
3637 while (q
> ldata
&& (q
[-1] & CHAR_MASK
) == 0x20)
3639 if (q
== ldata
+ term
->cols
)
3641 if (p
.x
>= q
- ldata
)
3642 p
.x
= (dir
== -1 ? q
- ldata
: term
->cols
- 1);
3647 * In this mode, the units are maximal runs of characters
3648 * whose `wordness' has the same value.
3650 wvalue
= wordtype(term
, UCSGET(ldata
, p
.x
));
3653 int maxcols
= (ldata
[term
->cols
] & LATTR_WRAPPED2 ?
3654 term
->cols
-1 : term
->cols
);
3655 if (p
.x
< maxcols
-1) {
3656 if (wordtype(term
, UCSGET(ldata
, p
.x
+ 1)) == wvalue
)
3661 if (ldata
[term
->cols
] & LATTR_WRAPPED
) {
3662 unsigned long *ldata2
;
3663 ldata2
= lineptr(p
.y
+1);
3664 if (wordtype(term
, UCSGET(ldata2
, 0)) == wvalue
) {
3677 if (wordtype(term
, UCSGET(ldata
, p
.x
- 1)) == wvalue
)
3682 unsigned long *ldata2
;
3686 ldata2
= lineptr(p
.y
-1);
3687 maxcols
= (ldata2
[term
->cols
] & LATTR_WRAPPED2 ?
3688 term
->cols
-1 : term
->cols
);
3689 if (ldata2
[term
->cols
] & LATTR_WRAPPED
) {
3690 if (wordtype(term
, UCSGET(ldata2
, maxcols
-1))
3705 * In this mode, every line is a unit.
3707 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
3713 static void sel_spread(Terminal
*term
)
3715 if (term
->seltype
== LEXICOGRAPHIC
) {
3716 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
3717 decpos(term
->selend
);
3718 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
3719 incpos(term
->selend
);
3723 void term_do_paste(Terminal
*term
)
3728 get_clip(term
->frontend
, &data
, &len
);
3729 if (data
&& len
> 0) {
3732 term_seen_key_event(term
); /* pasted data counts */
3734 if (term
->paste_buffer
)
3735 sfree(term
->paste_buffer
);
3736 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
3737 term
->paste_buffer
= smalloc(len
* sizeof(wchar_t));
3740 while (p
< data
+ len
) {
3741 while (p
< data
+ len
&&
3742 !(p
<= data
+ len
- sel_nl_sz
&&
3743 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
3748 for (i
= 0; i
< p
- q
; i
++) {
3749 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
3753 if (p
<= data
+ len
- sel_nl_sz
&&
3754 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
3755 term
->paste_buffer
[term
->paste_len
++] = '\015';
3761 /* Assume a small paste will be OK in one go. */
3762 if (term
->paste_len
< 256) {
3764 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
3765 if (term
->paste_buffer
)
3766 sfree(term
->paste_buffer
);
3767 term
->paste_buffer
= 0;
3768 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
3771 get_clip(term
->frontend
, NULL
, NULL
);
3774 void term_mouse(Terminal
*term
, Mouse_Button b
, Mouse_Action a
, int x
, int y
,
3775 int shift
, int ctrl
, int alt
)
3778 unsigned long *ldata
;
3779 int raw_mouse
= (term
->xterm_mouse
&&
3780 !term
->cfg
.no_mouse_rep
&&
3781 !(term
->cfg
.mouse_override
&& shift
));
3782 int default_seltype
;
3786 if (a
== MA_DRAG
&& !raw_mouse
)
3787 term_scroll(term
, 0, -1);
3789 if (y
>= term
->rows
) {
3791 if (a
== MA_DRAG
&& !raw_mouse
)
3792 term_scroll(term
, 0, +1);
3801 if (x
>= term
->cols
)
3804 selpoint
.y
= y
+ term
->disptop
;
3806 ldata
= lineptr(selpoint
.y
);
3807 if ((ldata
[term
->cols
] & LATTR_MODE
) != LATTR_NORM
)
3811 int encstate
= 0, r
, c
;
3818 encstate
= 0x20; /* left button down */
3829 case MBT_WHEEL_DOWN
:
3832 default: break; /* placate gcc warning about enum use */
3836 if (term
->xterm_mouse
== 1)
3842 term
->mouse_is_down
= 0;
3845 if (term
->mouse_is_down
== b
)
3847 term
->mouse_is_down
= b
;
3849 default: break; /* placate gcc warning about enum use */
3858 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
3859 ldisc_send(term
->ldisc
, abuf
, 6, 0);
3864 b
= translate_button(term
->frontend
, b
);
3867 * Set the selection type (rectangular or normal) at the start
3868 * of a selection attempt, from the state of Alt.
3870 if (!alt
^ !term
->cfg
.rect_select
)
3871 default_seltype
= RECTANGULAR
;
3873 default_seltype
= LEXICOGRAPHIC
;
3875 if (term
->selstate
== NO_SELECTION
) {
3876 term
->seltype
= default_seltype
;
3879 if (b
== MBT_SELECT
&& a
== MA_CLICK
) {
3881 term
->selstate
= ABOUT_TO
;
3882 term
->seltype
= default_seltype
;
3883 term
->selanchor
= selpoint
;
3884 term
->selmode
= SM_CHAR
;
3885 } else if (b
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
3887 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
3888 term
->selstate
= DRAGGING
;
3889 term
->selstart
= term
->selanchor
= selpoint
;
3890 term
->selend
= term
->selstart
;
3891 incpos(term
->selend
);
3893 } else if ((b
== MBT_SELECT
&& a
== MA_DRAG
) ||
3894 (b
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
3895 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
3897 if (b
== MBT_EXTEND
&& a
!= MA_DRAG
&& term
->selstate
== SELECTED
) {
3898 if (term
->seltype
== LEXICOGRAPHIC
) {
3900 * For normal selection, we extend by moving
3901 * whichever end of the current selection is closer
3904 if (posdiff(selpoint
, term
->selstart
) <
3905 posdiff(term
->selend
, term
->selstart
) / 2) {
3906 term
->selanchor
= term
->selend
;
3907 decpos(term
->selanchor
);
3909 term
->selanchor
= term
->selstart
;
3913 * For rectangular selection, we have a choice of
3914 * _four_ places to put selanchor and selpoint: the
3915 * four corners of the selection.
3917 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
3918 term
->selanchor
.x
= term
->selend
.x
-1;
3920 term
->selanchor
.x
= term
->selstart
.x
;
3922 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
3923 term
->selanchor
.y
= term
->selend
.y
;
3925 term
->selanchor
.y
= term
->selstart
.y
;
3927 term
->selstate
= DRAGGING
;
3929 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
3930 term
->selanchor
= selpoint
;
3931 term
->selstate
= DRAGGING
;
3932 if (term
->seltype
== LEXICOGRAPHIC
) {
3934 * For normal selection, we set (selstart,selend) to
3935 * (selpoint,selanchor) in some order.
3937 if (poslt(selpoint
, term
->selanchor
)) {
3938 term
->selstart
= selpoint
;
3939 term
->selend
= term
->selanchor
;
3940 incpos(term
->selend
);
3942 term
->selstart
= term
->selanchor
;
3943 term
->selend
= selpoint
;
3944 incpos(term
->selend
);
3948 * For rectangular selection, we may need to
3949 * interchange x and y coordinates (if the user has
3950 * dragged in the -x and +y directions, or vice versa).
3952 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
3953 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
3954 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
3955 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
3958 } else if ((b
== MBT_SELECT
|| b
== MBT_EXTEND
) && a
== MA_RELEASE
) {
3959 if (term
->selstate
== DRAGGING
) {
3961 * We've completed a selection. We now transfer the
3962 * data to the clipboard.
3964 clipme(term
, term
->selstart
, term
->selend
,
3965 (term
->seltype
== RECTANGULAR
));
3966 term
->selstate
= SELECTED
;
3968 term
->selstate
= NO_SELECTION
;
3969 } else if (b
== MBT_PASTE
3971 #if MULTICLICK_ONLY_EVENT
3972 || a
== MA_2CLK
|| a
== MA_3CLK
3975 request_paste(term
->frontend
);
3981 void term_nopaste(Terminal
*term
)
3983 if (term
->paste_len
== 0)
3985 sfree(term
->paste_buffer
);
3986 term
->paste_buffer
= NULL
;
3987 term
->paste_len
= 0;
3990 int term_paste_pending(Terminal
*term
)
3992 return term
->paste_len
!= 0;
3995 void term_paste(Terminal
*term
)
3997 long now
, paste_diff
;
3999 if (term
->paste_len
== 0)
4002 /* Don't wait forever to paste */
4003 if (term
->paste_hold
) {
4004 now
= GETTICKCOUNT();
4005 paste_diff
= now
- term
->last_paste
;
4006 if (paste_diff
>= 0 && paste_diff
< 450)
4009 term
->paste_hold
= 0;
4011 while (term
->paste_pos
< term
->paste_len
) {
4013 while (n
+ term
->paste_pos
< term
->paste_len
) {
4014 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
4018 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
4019 term
->paste_pos
+= n
;
4021 if (term
->paste_pos
< term
->paste_len
) {
4022 term
->paste_hold
= 1;
4026 sfree(term
->paste_buffer
);
4027 term
->paste_buffer
= NULL
;
4028 term
->paste_len
= 0;
4031 static void deselect(Terminal
*term
)
4033 term
->selstate
= NO_SELECTION
;
4034 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
4037 void term_deselect(Terminal
*term
)
4043 int term_ldisc(Terminal
*term
, int option
)
4045 if (option
== LD_ECHO
)
4046 return term
->term_echoing
;
4047 if (option
== LD_EDIT
)
4048 return term
->term_editing
;
4053 * from_backend(), to get data from the backend for the terminal.
4055 int from_backend(void *vterm
, int is_stderr
, char *data
, int len
)
4057 Terminal
*term
= (Terminal
*)vterm
;
4061 bufchain_add(&term
->inbuf
, data
, len
);
4064 * term_out() always completely empties inbuf. Therefore,
4065 * there's no reason at all to return anything other than zero
4066 * from this function, because there _can't_ be a question of
4067 * the remote side needing to wait until term_out() has cleared
4070 * This is a slightly suboptimal way to deal with SSH2 - in
4071 * principle, the window mechanism would allow us to continue
4072 * to accept data on forwarded ports and X connections even
4073 * while the terminal processing was going slowly - but we
4074 * can't do the 100% right thing without moving the terminal
4075 * processing into a separate thread, and that might hurt
4076 * portability. So we manage stdout buffering the old SSH1 way:
4077 * if the terminal processing goes slowly, the whole SSH
4078 * connection stops accepting data until it's ready.
4080 * In practice, I can't imagine this causing serious trouble.
4085 void term_provide_logctx(Terminal
*term
, void *logctx
)
4087 term
->logctx
= logctx
;