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
= sresize(line
, 2 + cols
, TTYPE
);
104 for (i
= oldlen
; i
< cols
; i
++)
105 line
[i
+ 1] = ERASE_CHAR
;
106 line
[cols
+ 1] = lineattrs
& LATTR_MODE
;
113 * Get the number of lines in the scrollback.
115 static int sblines(Terminal
*term
)
117 int sblines
= count234(term
->scrollback
);
118 if (term
->cfg
.erase_to_scrollback
&&
119 term
->alt_which
&& term
->alt_screen
) {
120 sblines
+= term
->alt_sblines
;
126 * Retrieve a line of the screen or of the scrollback, according to
127 * whether the y coordinate is non-negative or negative
130 static unsigned long *lineptr(Terminal
*term
, int y
, int lineno
)
132 unsigned long *line
, *newline
;
137 whichtree
= term
->screen
;
141 if (term
->cfg
.erase_to_scrollback
&&
142 term
->alt_which
&& term
->alt_screen
) {
143 altlines
= term
->alt_sblines
;
146 whichtree
= term
->scrollback
;
147 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
149 whichtree
= term
->alt_screen
;
150 treeindex
= y
+ term
->alt_sblines
;
151 /* treeindex = y + count234(term->alt_screen); */
154 line
= index234(whichtree
, treeindex
);
156 /* We assume that we don't screw up and retrieve something out of range. */
157 assert(line
!= NULL
);
159 newline
= resizeline(line
, term
->cols
);
160 if (newline
!= line
) {
161 delpos234(whichtree
, treeindex
);
162 addpos234(whichtree
, newline
, treeindex
);
169 #define lineptr(x) lineptr(term,x,__LINE__)
172 * Set up power-on settings for the terminal.
174 static void power_on(Terminal
*term
)
176 term
->curs
.x
= term
->curs
.y
= 0;
177 term
->alt_x
= term
->alt_y
= 0;
178 term
->savecurs
.x
= term
->savecurs
.y
= 0;
179 term
->alt_t
= term
->marg_t
= 0;
180 if (term
->rows
!= -1)
181 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
183 term
->alt_b
= term
->marg_b
= 0;
184 if (term
->cols
!= -1) {
186 for (i
= 0; i
< term
->cols
; i
++)
187 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
189 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
190 term
->alt_ins
= term
->insert
= FALSE
;
191 term
->alt_wnext
= term
->wrapnext
= term
->save_wnext
= FALSE
;
192 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
193 term
->alt_cset
= term
->cset
= term
->save_cset
= 0;
194 term
->alt_utf
= term
->utf
= term
->save_utf
= 0;
196 term
->alt_sco_acs
= term
->sco_acs
= term
->save_sco_acs
= 0;
197 term
->cset_attr
[0] = term
->cset_attr
[1] = term
->save_csattr
= ATTR_ASCII
;
199 term
->in_vbell
= FALSE
;
201 term
->big_cursor
= 0;
202 term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
203 term
->term_editing
= term
->term_echoing
= FALSE
;
204 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
205 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
206 term
->use_bce
= term
->cfg
.bce
;
207 term
->blink_is_real
= term
->cfg
.blinktext
;
208 term
->erase_char
= ERASE_CHAR
;
210 term_print_finish(term
);
213 for (i
= 0; i
< 256; i
++)
214 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
217 swap_screen(term
, 1, FALSE
, FALSE
);
218 erase_lots(term
, FALSE
, TRUE
, TRUE
);
219 swap_screen(term
, 0, FALSE
, FALSE
);
220 erase_lots(term
, FALSE
, TRUE
, TRUE
);
225 * Force a screen update.
227 void term_update(Terminal
*term
)
230 ctx
= get_ctx(term
->frontend
);
232 int need_sbar_update
= term
->seen_disp_event
;
233 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
234 term
->disptop
= 0; /* return to main screen */
235 term
->seen_disp_event
= 0;
236 need_sbar_update
= TRUE
;
238 if (need_sbar_update
)
240 do_paint(term
, ctx
, TRUE
);
241 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
247 * Called from front end when a keypress occurs, to trigger
248 * anything magical that needs to happen in that situation.
250 void term_seen_key_event(Terminal
*term
)
253 * On any keypress, clear the bell overload mechanism
254 * completely, on the grounds that large numbers of
255 * beeps coming from deliberate key action are likely
256 * to be intended (e.g. beeps from filename completion
257 * blocking repeatedly).
259 term
->beep_overloaded
= FALSE
;
260 while (term
->beephead
) {
261 struct beeptime
*tmp
= term
->beephead
;
262 term
->beephead
= tmp
->next
;
265 term
->beeptail
= NULL
;
269 * Reset the scrollback on keypress, if we're doing that.
271 if (term
->cfg
.scroll_on_key
) {
272 term
->disptop
= 0; /* return to main screen */
273 term
->seen_disp_event
= 1;
278 * Same as power_on(), but an external function.
280 void term_pwron(Terminal
*term
)
283 if (term
->ldisc
) /* cause ldisc to notice changes */
284 ldisc_send(term
->ldisc
, NULL
, 0, 0);
292 * When the user reconfigures us, we need to check the forbidden-
293 * alternate-screen config option, disable raw mouse mode if the
294 * user has disabled mouse reporting, and abandon a print job if
295 * the user has disabled printing.
297 void term_reconfig(Terminal
*term
, Config
*cfg
)
300 * Before adopting the new config, check all those terminal
301 * settings which control power-on defaults; and if they've
302 * changed, we will modify the current state as well as the
303 * default one. The full list is: Auto wrap mode, DEC Origin
304 * Mode, BCE, blinking text, character classes.
306 int reset_wrap
, reset_decom
, reset_bce
, reset_blink
, reset_charclass
;
309 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
310 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
311 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
312 reset_blink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
314 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
315 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
318 term
->cfg
= *cfg
; /* STRUCTURE COPY */
321 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
323 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
325 term
->use_bce
= term
->cfg
.bce
;
327 term
->erase_char
= (' ' | ATTR_ASCII
|
329 (ATTR_FGMASK
| ATTR_BGMASK
)));
331 term
->erase_char
= ERASE_CHAR
;
334 term
->blink_is_real
= term
->cfg
.blinktext
;
336 for (i
= 0; i
< 256; i
++)
337 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
339 if (term
->cfg
.no_alt_screen
)
340 swap_screen(term
, 0, FALSE
, FALSE
);
341 if (term
->cfg
.no_mouse_rep
) {
342 term
->xterm_mouse
= 0;
343 set_raw_mouse_mode(term
->frontend
, 0);
345 if (term
->cfg
.no_remote_charset
) {
346 term
->cset_attr
[0] = term
->cset_attr
[1] = ATTR_ASCII
;
347 term
->sco_acs
= term
->alt_sco_acs
= 0;
350 if (!*term
->cfg
.printer
) {
351 term_print_finish(term
);
356 * Clear the scrollback.
358 void term_clrsb(Terminal
*term
)
362 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
365 term
->tempsblines
= 0;
366 term
->alt_sblines
= 0;
371 * Initialise the terminal.
373 Terminal
*term_init(Config
*mycfg
, struct unicode_data
*ucsdata
,
379 * Allocate a new Terminal structure and initialise the fields
382 term
= snew(Terminal
);
383 term
->frontend
= frontend
;
384 term
->ucsdata
= ucsdata
;
385 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
387 term
->compatibility_level
= TM_PUTTY
;
388 strcpy(term
->id_string
, "\033[?6c");
389 term
->last_blink
= term
->last_tblink
= 0;
390 term
->paste_buffer
= NULL
;
392 term
->last_paste
= 0;
393 bufchain_init(&term
->inbuf
);
394 bufchain_init(&term
->printer_buf
);
395 term
->printing
= term
->only_printing
= FALSE
;
396 term
->print_job
= NULL
;
397 term
->vt52_mode
= FALSE
;
398 term
->cr_lf_return
= FALSE
;
399 term
->seen_disp_event
= FALSE
;
400 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
401 term
->reset_132
= FALSE
;
402 term
->blinker
= term
->tblinker
= 0;
404 term
->repeat_off
= FALSE
;
405 term
->termstate
= TOPLEVEL
;
406 term
->selstate
= NO_SELECTION
;
409 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
410 term
->tempsblines
= 0;
411 term
->alt_sblines
= 0;
413 term
->disptext
= term
->dispcurs
= NULL
;
416 term
->rows
= term
->cols
= -1;
418 term
->beephead
= term
->beeptail
= NULL
;
419 #ifdef OPTIMISE_SCROLL
420 term
->scrollhead
= term
->scrolltail
= NULL
;
421 #endif /* OPTIMISE_SCROLL */
423 term
->lastbeep
= FALSE
;
424 term
->beep_overloaded
= FALSE
;
425 term
->attr_mask
= 0xffffffff;
426 term
->resize_fn
= NULL
;
427 term
->resize_ctx
= NULL
;
428 term
->in_term_out
= FALSE
;
433 void term_free(Terminal
*term
)
436 struct beeptime
*beep
;
438 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
440 freetree234(term
->scrollback
);
441 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
443 freetree234(term
->screen
);
444 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
446 freetree234(term
->alt_screen
);
447 sfree(term
->disptext
);
448 while (term
->beephead
) {
449 beep
= term
->beephead
;
450 term
->beephead
= beep
->next
;
453 bufchain_clear(&term
->inbuf
);
455 printer_finish_job(term
->print_job
);
456 bufchain_clear(&term
->printer_buf
);
457 sfree(term
->paste_buffer
);
462 * Set up the terminal for a given size.
464 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
467 unsigned long *newdisp
, *line
;
470 int save_alt_which
= term
->alt_which
;
472 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
473 newsavelines
== term
->savelines
)
474 return; /* nothing to do */
477 swap_screen(term
, 0, FALSE
, FALSE
);
479 term
->alt_t
= term
->marg_t
= 0;
480 term
->alt_b
= term
->marg_b
= newrows
- 1;
482 if (term
->rows
== -1) {
483 term
->scrollback
= newtree234(NULL
);
484 term
->screen
= newtree234(NULL
);
485 term
->tempsblines
= 0;
490 * Resize the screen and scrollback. We only need to shift
491 * lines around within our data structures, because lineptr()
492 * will take care of resizing each individual line if
495 * - If the new screen is longer, we shunt lines in from temporary
496 * scrollback if possible, otherwise we add new blank lines at
499 * - If the new screen is shorter, we remove any blank lines at
500 * the bottom if possible, otherwise shunt lines above the cursor
501 * to scrollback if possible, otherwise delete lines below the
504 * - Then, if the new scrollback length is less than the
505 * amount of scrollback we actually have, we must throw some
508 sblen
= count234(term
->scrollback
);
509 /* Do this loop to expand the screen if newrows > rows */
510 assert(term
->rows
== count234(term
->screen
));
511 while (term
->rows
< newrows
) {
512 if (term
->tempsblines
> 0) {
513 /* Insert a line from the scrollback at the top of the screen. */
514 assert(sblen
>= term
->tempsblines
);
515 line
= delpos234(term
->scrollback
, --sblen
);
516 term
->tempsblines
-= 1;
517 addpos234(term
->screen
, line
, 0);
519 term
->savecurs
.y
+= 1;
521 /* Add a new blank line at the bottom of the screen. */
522 line
= snewn(newcols
+ 2, TTYPE
);
524 for (j
= 0; j
< newcols
; j
++)
525 line
[j
+ 1] = ERASE_CHAR
;
526 line
[newcols
+ 1] = LATTR_NORM
;
527 addpos234(term
->screen
, line
, count234(term
->screen
));
531 /* Do this loop to shrink the screen if newrows < rows */
532 while (term
->rows
> newrows
) {
533 if (term
->curs
.y
< term
->rows
- 1) {
534 /* delete bottom row, unless it contains the cursor */
535 sfree(delpos234(term
->screen
, term
->rows
- 1));
537 /* push top row to scrollback */
538 line
= delpos234(term
->screen
, 0);
539 addpos234(term
->scrollback
, line
, sblen
++);
540 term
->tempsblines
+= 1;
542 term
->savecurs
.y
-= 1;
546 assert(term
->rows
== newrows
);
547 assert(count234(term
->screen
) == newrows
);
549 /* Delete any excess lines from the scrollback. */
550 while (sblen
> newsavelines
) {
551 line
= delpos234(term
->scrollback
, 0);
555 if (sblen
< term
->tempsblines
)
556 term
->tempsblines
= sblen
;
557 assert(count234(term
->scrollback
) <= newsavelines
);
558 assert(count234(term
->scrollback
) >= term
->tempsblines
);
561 /* Make a new displayed text buffer. */
562 newdisp
= snewn(newrows
* (newcols
+ 1), TTYPE
);
563 for (i
= 0; i
< newrows
* (newcols
+ 1); i
++)
564 newdisp
[i
] = ATTR_INVALID
;
565 sfree(term
->disptext
);
566 term
->disptext
= newdisp
;
567 term
->dispcurs
= NULL
;
569 /* Make a new alternate screen. */
570 newalt
= newtree234(NULL
);
571 for (i
= 0; i
< newrows
; i
++) {
572 line
= snewn(newcols
+ 2, TTYPE
);
574 for (j
= 0; j
< newcols
; j
++)
575 line
[j
+ 1] = term
->erase_char
;
576 line
[newcols
+ 1] = LATTR_NORM
;
577 addpos234(newalt
, line
, i
);
579 if (term
->alt_screen
) {
580 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
582 freetree234(term
->alt_screen
);
584 term
->alt_screen
= newalt
;
585 term
->alt_sblines
= 0;
587 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
590 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
591 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
594 /* Check that the cursor positions are still valid. */
595 if (term
->savecurs
.y
< 0)
596 term
->savecurs
.y
= 0;
597 if (term
->savecurs
.y
>= newrows
)
598 term
->savecurs
.y
= newrows
- 1;
599 if (term
->curs
.y
< 0)
601 if (term
->curs
.y
>= newrows
)
602 term
->curs
.y
= newrows
- 1;
603 if (term
->curs
.x
>= newcols
)
604 term
->curs
.x
= newcols
- 1;
605 term
->alt_x
= term
->alt_y
= 0;
606 term
->wrapnext
= term
->alt_wnext
= FALSE
;
608 term
->rows
= newrows
;
609 term
->cols
= newcols
;
610 term
->savelines
= newsavelines
;
613 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
618 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
622 * Hand a function and context pointer to the terminal which it can
623 * use to notify a back end of resizes.
625 void term_provide_resize_fn(Terminal
*term
,
626 void (*resize_fn
)(void *, int, int),
629 term
->resize_fn
= resize_fn
;
630 term
->resize_ctx
= resize_ctx
;
631 if (term
->cols
> 0 && term
->rows
> 0)
632 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
635 /* Find the bottom line on the screen that has any content.
636 * If only the top line has content, returns 0.
637 * If no lines have content, return -1.
639 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
642 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
643 unsigned long *line
= index234(screen
, i
);
646 for (j
= 0; j
< cols
; j
++) {
647 if (line
[j
+ 1] != term
->erase_char
) break;
649 if (j
!= cols
) break;
655 * Swap screens. If `reset' is TRUE and we have been asked to
656 * switch to the alternate screen, we must bring most of its
657 * configuration from the main screen and erase the contents of the
658 * alternate screen completely. (This is even true if we're already
659 * on it! Blame xterm.)
661 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
667 reset
= FALSE
; /* do no weird resetting if which==0 */
669 if (which
!= term
->alt_which
) {
670 term
->alt_which
= which
;
672 ttr
= term
->alt_screen
;
673 term
->alt_screen
= term
->screen
;
675 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
677 if (!reset
&& !keep_cur_pos
)
678 term
->curs
.x
= term
->alt_x
;
681 if (!reset
&& !keep_cur_pos
)
682 term
->curs
.y
= term
->alt_y
;
685 if (!reset
) term
->marg_t
= term
->alt_t
;
688 if (!reset
) term
->marg_b
= term
->alt_b
;
691 if (!reset
) term
->dec_om
= term
->alt_om
;
694 if (!reset
) term
->wrap
= term
->alt_wrap
;
697 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
700 if (!reset
) term
->insert
= term
->alt_ins
;
703 if (!reset
) term
->cset
= term
->alt_cset
;
706 if (!reset
) term
->utf
= term
->alt_utf
;
709 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
710 term
->alt_sco_acs
= t
;
713 if (reset
&& term
->screen
) {
715 * Yes, this _is_ supposed to honour background-colour-erase.
717 erase_lots(term
, FALSE
, TRUE
, TRUE
);
721 * This might not be possible if we're called during
729 * Update the scroll bar.
731 static void update_sbar(Terminal
*term
)
733 int nscroll
= sblines(term
);
734 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
735 nscroll
+ term
->disptop
, term
->rows
);
739 * Check whether the region bounded by the two pointers intersects
740 * the scroll region, and de-select the on-screen selection if so.
742 static void check_selection(Terminal
*term
, pos from
, pos to
)
744 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
749 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
750 * for backward.) `sb' is TRUE if the scrolling is permitted to
751 * affect the scrollback buffer.
753 * NB this function invalidates all pointers into lines of the
754 * screen data structures. In particular, you MUST call fix_cpos
755 * after calling scroll() and before doing anything else that
756 * uses the cpos shortcut pointer.
758 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
760 unsigned long *line
, *line2
;
761 int i
, seltop
, olddisptop
, shift
;
763 if (topline
!= 0 || term
->alt_which
!= 0)
766 olddisptop
= term
->disptop
;
770 line
= delpos234(term
->screen
, botline
);
771 line
= resizeline(line
, term
->cols
);
772 for (i
= 0; i
< term
->cols
; i
++)
773 line
[i
+ 1] = term
->erase_char
;
774 line
[term
->cols
+ 1] = 0;
775 addpos234(term
->screen
, line
, topline
);
777 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
779 if (term
->selstart
.y
> botline
) {
780 term
->selstart
.y
= botline
+ 1;
781 term
->selstart
.x
= 0;
784 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
786 if (term
->selend
.y
> botline
) {
787 term
->selend
.y
= botline
+ 1;
796 line
= delpos234(term
->screen
, topline
);
797 if (sb
&& term
->savelines
> 0) {
798 int sblen
= count234(term
->scrollback
);
800 * We must add this line to the scrollback. We'll
801 * remove a line from the top of the scrollback to
802 * replace it, or allocate a new one if the
803 * scrollback isn't full.
805 if (sblen
== term
->savelines
) {
806 sblen
--, line2
= delpos234(term
->scrollback
, 0);
808 line2
= snewn(term
->cols
+ 2, TTYPE
);
809 line2
[0] = term
->cols
;
810 term
->tempsblines
+= 1;
812 addpos234(term
->scrollback
, line
, sblen
);
816 * If the user is currently looking at part of the
817 * scrollback, and they haven't enabled any options
818 * that are going to reset the scrollback as a
819 * result of this movement, then the chances are
820 * they'd like to keep looking at the same line. So
821 * we move their viewpoint at the same rate as the
822 * scroll, at least until their viewpoint hits the
823 * top end of the scrollback buffer, at which point
824 * we don't have the choice any more.
826 * Thanks to Jan Holmen Holsten for the idea and
827 * initial implementation.
829 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
832 line
= resizeline(line
, term
->cols
);
833 for (i
= 0; i
< term
->cols
; i
++)
834 line
[i
+ 1] = term
->erase_char
;
835 line
[term
->cols
+ 1] = LATTR_NORM
;
836 addpos234(term
->screen
, line
, botline
);
839 * If the selection endpoints move into the scrollback,
840 * we keep them moving until they hit the top. However,
841 * of course, if the line _hasn't_ moved into the
842 * scrollback then we don't do this, and cut them off
843 * at the top of the scroll region.
845 * This applies to selstart and selend (for an existing
846 * selection), and also selanchor (for one being
847 * selected as we speak).
849 seltop
= sb ?
-term
->savelines
: topline
;
851 if (term
->selstart
.y
>= seltop
&&
852 term
->selstart
.y
<= botline
) {
854 if (term
->selstart
.y
< seltop
) {
855 term
->selstart
.y
= seltop
;
856 term
->selstart
.x
= 0;
859 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
861 if (term
->selend
.y
< seltop
) {
862 term
->selend
.y
= seltop
;
866 if (term
->selanchor
.y
>= seltop
&& term
->selanchor
.y
<= botline
) {
868 if (term
->selanchor
.y
< seltop
) {
869 term
->selanchor
.y
= seltop
;
870 term
->selanchor
.x
= 0;
877 #ifdef OPTIMISE_SCROLL
878 shift
+= term
->disptop
- olddisptop
;
879 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
880 scroll_display(term
, topline
, botline
, shift
);
881 #endif /* OPTIMISE_SCROLL */
884 #ifdef OPTIMISE_SCROLL
886 * Add a scroll of a region on the screen into the pending scroll list.
887 * `lines' is +ve for scrolling forward, -ve for backward.
889 * If the scroll is on the same area as the last scroll in the list,
892 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
894 struct scrollregion
*newscroll
;
895 if (term
->scrolltail
&&
896 term
->scrolltail
->topline
== topline
&&
897 term
->scrolltail
->botline
== botline
) {
898 term
->scrolltail
->lines
+= lines
;
900 newscroll
= snew(struct scrollregion
);
901 newscroll
->topline
= topline
;
902 newscroll
->botline
= botline
;
903 newscroll
->lines
= lines
;
904 newscroll
->next
= NULL
;
906 if (!term
->scrollhead
)
907 term
->scrollhead
= newscroll
;
909 term
->scrolltail
->next
= newscroll
;
910 term
->scrolltail
= newscroll
;
915 * Scroll the physical display, and our conception of it in disptext.
917 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
919 unsigned long *start
, *end
;
920 int distance
, size
, i
;
922 start
= term
->disptext
+ topline
* (term
->cols
+ 1);
923 end
= term
->disptext
+ (botline
+ 1) * (term
->cols
+ 1);
924 distance
= (lines
> 0 ? lines
: -lines
) * (term
->cols
+ 1);
925 size
= end
- start
- distance
;
927 memmove(start
, start
+ distance
, size
* TSIZE
);
928 if (term
->dispcurs
>= start
+ distance
&&
929 term
->dispcurs
<= start
+ distance
+ size
)
930 term
->dispcurs
-= distance
;
931 for (i
= 0; i
< distance
; i
++)
932 (start
+ size
)[i
] |= ATTR_INVALID
;
934 memmove(start
+ distance
, start
, size
* TSIZE
);
935 if (term
->dispcurs
>= start
&& term
->dispcurs
<= start
+ size
)
936 term
->dispcurs
+= distance
;
937 for (i
= 0; i
< distance
; i
++)
938 start
[i
] |= ATTR_INVALID
;
940 save_scroll(term
, topline
, botline
, lines
);
942 #endif /* OPTIMISE_SCROLL */
945 * Move the cursor to a given position, clipping at boundaries. We
946 * may or may not want to clip at the scroll margin: marg_clip is 0
947 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
948 * even _being_ outside the margins.
950 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
957 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
960 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
971 term
->wrapnext
= FALSE
;
975 * Save or restore the cursor and SGR mode.
977 static void save_cursor(Terminal
*term
, int save
)
980 term
->savecurs
= term
->curs
;
981 term
->save_attr
= term
->curr_attr
;
982 term
->save_cset
= term
->cset
;
983 term
->save_utf
= term
->utf
;
984 term
->save_wnext
= term
->wrapnext
;
985 term
->save_csattr
= term
->cset_attr
[term
->cset
];
986 term
->save_sco_acs
= term
->sco_acs
;
988 term
->curs
= term
->savecurs
;
989 /* Make sure the window hasn't shrunk since the save */
990 if (term
->curs
.x
>= term
->cols
)
991 term
->curs
.x
= term
->cols
- 1;
992 if (term
->curs
.y
>= term
->rows
)
993 term
->curs
.y
= term
->rows
- 1;
995 term
->curr_attr
= term
->save_attr
;
996 term
->cset
= term
->save_cset
;
997 term
->utf
= term
->save_utf
;
998 term
->wrapnext
= term
->save_wnext
;
1000 * wrapnext might reset to False if the x position is no
1001 * longer at the rightmost edge.
1003 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
1004 term
->wrapnext
= FALSE
;
1005 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
1006 term
->sco_acs
= term
->save_sco_acs
;
1009 term
->erase_char
= (' ' | ATTR_ASCII
|
1011 (ATTR_FGMASK
| ATTR_BGMASK
)));
1016 * This function is called before doing _anything_ which affects
1017 * only part of a line of text. It is used to mark the boundary
1018 * between two character positions, and it indicates that some sort
1019 * of effect is going to happen on only one side of that boundary.
1021 * The effect of this function is to check whether a CJK
1022 * double-width character is straddling the boundary, and to remove
1023 * it and replace it with two spaces if so. (Of course, one or
1024 * other of those spaces is then likely to be replaced with
1025 * something else again, as a result of whatever happens next.)
1027 * Also, if the boundary is at the right-hand _edge_ of the screen,
1028 * it implies something deliberate is being done to the rightmost
1029 * column position; hence we must clear LATTR_WRAPPED2.
1031 * The input to the function is the coordinates of the _second_
1032 * character of the pair.
1034 static void check_boundary(Terminal
*term
, int x
, int y
)
1036 unsigned long *ldata
;
1038 /* Validate input coordinates, just in case. */
1039 if (x
== 0 || x
> term
->cols
)
1043 if (x
== term
->cols
) {
1044 ldata
[x
] &= ~LATTR_WRAPPED2
;
1046 if ((ldata
[x
] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
) {
1047 ldata
[x
-1] = ldata
[x
] =
1048 (ldata
[x
-1] &~ (CHAR_MASK
| CSET_MASK
)) | ATTR_ASCII
| ' ';
1054 * Erase a large portion of the screen: the whole screen, or the
1055 * whole line, or parts thereof.
1057 static void erase_lots(Terminal
*term
,
1058 int line_only
, int from_begin
, int to_end
)
1062 int erasing_lines_from_top
= 0;
1065 start
.y
= term
->curs
.y
;
1067 end
.y
= term
->curs
.y
+ 1;
1069 erase_lattr
= FALSE
;
1084 if (!from_begin
|| !to_end
)
1085 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1086 check_selection(term
, start
, end
);
1088 /* Clear screen also forces a full window redraw, just in case. */
1089 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
1090 term_invalidate(term
);
1092 /* Lines scrolled away shouldn't be brought back on if the terminal
1094 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
1095 erasing_lines_from_top
= 1;
1097 if (term
->cfg
.erase_to_scrollback
&& erasing_lines_from_top
) {
1098 /* If it's a whole number of lines, starting at the top, and
1099 * we're fully erasing them, erase by scrolling and keep the
1100 * lines in the scrollback. */
1101 int scrolllines
= end
.y
;
1102 if (end
.y
== term
->rows
) {
1103 /* Shrink until we find a non-empty row.*/
1104 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
1106 if (scrolllines
> 0)
1107 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
1110 unsigned long *ldata
= lineptr(start
.y
);
1111 while (poslt(start
, end
)) {
1112 if (start
.x
== term
->cols
) {
1114 ldata
[start
.x
] &= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
1116 ldata
[start
.x
] = LATTR_NORM
;
1118 ldata
[start
.x
] = term
->erase_char
;
1120 if (incpos(start
) && start
.y
< term
->rows
)
1121 ldata
= lineptr(start
.y
);
1125 /* After an erase of lines from the top of the screen, we shouldn't
1126 * bring the lines back again if the terminal enlarges (since the user or
1127 * application has explictly thrown them away). */
1128 if (erasing_lines_from_top
&& !(term
->alt_which
))
1129 term
->tempsblines
= 0;
1133 * Insert or delete characters within the current line. n is +ve if
1134 * insertion is desired, and -ve for deletion.
1136 static void insch(Terminal
*term
, int n
)
1138 int dir
= (n
< 0 ?
-1 : +1);
1141 unsigned long *ldata
;
1143 n
= (n
< 0 ?
-n
: n
);
1144 if (n
> term
->cols
- term
->curs
.x
)
1145 n
= term
->cols
- term
->curs
.x
;
1146 m
= term
->cols
- term
->curs
.x
- n
;
1147 cursplus
.y
= term
->curs
.y
;
1148 cursplus
.x
= term
->curs
.x
+ n
;
1149 check_selection(term
, term
->curs
, cursplus
);
1150 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1152 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
1153 ldata
= lineptr(term
->curs
.y
);
1155 memmove(ldata
+ term
->curs
.x
, ldata
+ term
->curs
.x
+ n
, m
* TSIZE
);
1157 ldata
[term
->curs
.x
+ m
++] = term
->erase_char
;
1159 memmove(ldata
+ term
->curs
.x
+ n
, ldata
+ term
->curs
.x
, m
* TSIZE
);
1161 ldata
[term
->curs
.x
+ n
] = term
->erase_char
;
1166 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1167 * whether the mode is a DEC private one or a normal one.)
1169 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
1171 unsigned long ticks
;
1175 case 1: /* application cursor keys */
1176 term
->app_cursor_keys
= state
;
1178 case 2: /* VT52 mode */
1179 term
->vt52_mode
= !state
;
1180 if (term
->vt52_mode
) {
1181 term
->blink_is_real
= FALSE
;
1182 term
->vt52_bold
= FALSE
;
1184 term
->blink_is_real
= term
->cfg
.blinktext
;
1187 case 3: /* 80/132 columns */
1189 if (!term
->cfg
.no_remote_resize
)
1190 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
1191 term
->reset_132
= state
;
1192 term
->alt_t
= term
->marg_t
= 0;
1193 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1194 move(term
, 0, 0, 0);
1195 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1197 case 5: /* reverse video */
1199 * Toggle reverse video. If we receive an OFF within the
1200 * visual bell timeout period after an ON, we trigger an
1201 * effective visual bell, so that ESC[?5hESC[?5l will
1202 * always be an actually _visible_ visual bell.
1204 ticks
= GETTICKCOUNT();
1205 /* turn off a previous vbell to avoid inconsistencies */
1206 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
1207 term
->in_vbell
= FALSE
;
1208 if (term
->rvideo
&& !state
&& /* we're turning it off... */
1209 (ticks
- term
->rvbell_startpoint
) < VBELL_TIMEOUT
) {/*...soon*/
1210 /* If there's no vbell timeout already, or this one lasts
1211 * longer, replace vbell_timeout with ours. */
1212 if (!term
->in_vbell
||
1213 (term
->rvbell_startpoint
- term
->vbell_startpoint
<
1215 term
->vbell_startpoint
= term
->rvbell_startpoint
;
1216 term
->in_vbell
= TRUE
; /* may clear rvideo but set in_vbell */
1217 } else if (!term
->rvideo
&& state
) {
1218 /* This is an ON, so we notice the time and save it. */
1219 term
->rvbell_startpoint
= ticks
;
1221 term
->rvideo
= state
;
1222 term
->seen_disp_event
= TRUE
;
1226 case 6: /* DEC origin mode */
1227 term
->dec_om
= state
;
1229 case 7: /* auto wrap */
1232 case 8: /* auto key repeat */
1233 term
->repeat_off
= !state
;
1235 case 10: /* set local edit mode */
1236 term
->term_editing
= state
;
1237 if (term
->ldisc
) /* cause ldisc to notice changes */
1238 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1240 case 25: /* enable/disable cursor */
1241 compatibility2(OTHER
, VT220
);
1242 term
->cursor_on
= state
;
1243 term
->seen_disp_event
= TRUE
;
1245 case 47: /* alternate screen */
1246 compatibility(OTHER
);
1248 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
1251 case 1000: /* xterm mouse 1 */
1252 term
->xterm_mouse
= state ?
1 : 0;
1253 set_raw_mouse_mode(term
->frontend
, state
);
1255 case 1002: /* xterm mouse 2 */
1256 term
->xterm_mouse
= state ?
2 : 0;
1257 set_raw_mouse_mode(term
->frontend
, state
);
1259 case 1047: /* alternate screen */
1260 compatibility(OTHER
);
1262 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
1265 case 1048: /* save/restore cursor */
1266 if (!term
->cfg
.no_alt_screen
)
1267 save_cursor(term
, state
);
1268 if (!state
) term
->seen_disp_event
= TRUE
;
1270 case 1049: /* cursor & alternate screen */
1271 if (state
&& !term
->cfg
.no_alt_screen
)
1272 save_cursor(term
, state
);
1273 if (!state
) term
->seen_disp_event
= TRUE
;
1274 compatibility(OTHER
);
1276 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
1277 if (!state
&& !term
->cfg
.no_alt_screen
)
1278 save_cursor(term
, state
);
1283 case 4: /* set insert mode */
1284 compatibility(VT102
);
1285 term
->insert
= state
;
1287 case 12: /* set echo mode */
1288 term
->term_echoing
= !state
;
1289 if (term
->ldisc
) /* cause ldisc to notice changes */
1290 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1292 case 20: /* Return sends ... */
1293 term
->cr_lf_return
= state
;
1295 case 34: /* Make cursor BIG */
1296 compatibility2(OTHER
, VT220
);
1297 term
->big_cursor
= !state
;
1302 * Process an OSC sequence: set window title or icon name.
1304 static void do_osc(Terminal
*term
)
1307 while (term
->osc_strlen
--)
1308 term
->wordness
[(unsigned char)
1309 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
1311 term
->osc_string
[term
->osc_strlen
] = '\0';
1312 switch (term
->esc_args
[0]) {
1315 if (!term
->cfg
.no_remote_wintitle
)
1316 set_icon(term
->frontend
, term
->osc_string
);
1317 if (term
->esc_args
[0] == 1)
1319 /* fall through: parameter 0 means set both */
1322 if (!term
->cfg
.no_remote_wintitle
)
1323 set_title(term
->frontend
, term
->osc_string
);
1330 * ANSI printing routines.
1332 static void term_print_setup(Terminal
*term
)
1334 bufchain_clear(&term
->printer_buf
);
1335 term
->print_job
= printer_start_job(term
->cfg
.printer
);
1337 static void term_print_flush(Terminal
*term
)
1342 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
1343 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1346 printer_job_data(term
->print_job
, data
, len
);
1347 bufchain_consume(&term
->printer_buf
, len
);
1350 static void term_print_finish(Terminal
*term
)
1356 if (!term
->printing
&& !term
->only_printing
)
1357 return; /* we need do nothing */
1359 term_print_flush(term
);
1360 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
1361 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1363 if (c
== '\033' || c
== '\233') {
1364 bufchain_consume(&term
->printer_buf
, size
);
1367 printer_job_data(term
->print_job
, &c
, 1);
1368 bufchain_consume(&term
->printer_buf
, 1);
1371 printer_finish_job(term
->print_job
);
1372 term
->print_job
= NULL
;
1373 term
->printing
= term
->only_printing
= FALSE
;
1377 * Remove everything currently in `inbuf' and stick it up on the
1378 * in-memory display. There's a big state machine in here to
1379 * process escape sequences...
1381 void term_out(Terminal
*term
)
1384 unsigned char localbuf
[256], *chars
;
1389 chars
= NULL
; /* placate compiler warnings */
1390 while (nchars
> 0 || bufchain_size(&term
->inbuf
) > 0) {
1394 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
1395 if (nchars
> sizeof(localbuf
))
1396 nchars
= sizeof(localbuf
);
1397 memcpy(localbuf
, ret
, nchars
);
1398 bufchain_consume(&term
->inbuf
, nchars
);
1400 assert(chars
!= NULL
);
1406 * Optionally log the session traffic to a file. Useful for
1407 * debugging and possibly also useful for actual logging.
1409 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
1410 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
1416 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1417 * be able to display 8-bit characters, but I'll let that go 'cause
1422 * If we're printing, add the character to the printer
1425 if (term
->printing
) {
1426 bufchain_add(&term
->printer_buf
, &c
, 1);
1429 * If we're in print-only mode, we use a much simpler
1430 * state machine designed only to recognise the ESC[4i
1431 * termination sequence.
1433 if (term
->only_printing
) {
1435 term
->print_state
= 1;
1436 else if (c
== (unsigned char)'\233')
1437 term
->print_state
= 2;
1438 else if (c
== '[' && term
->print_state
== 1)
1439 term
->print_state
= 2;
1440 else if (c
== '4' && term
->print_state
== 2)
1441 term
->print_state
= 3;
1442 else if (c
== 'i' && term
->print_state
== 3)
1443 term
->print_state
= 4;
1445 term
->print_state
= 0;
1446 if (term
->print_state
== 4) {
1447 term_print_finish(term
);
1453 /* First see about all those translations. */
1454 if (term
->termstate
== TOPLEVEL
) {
1456 switch (term
->utf_state
) {
1459 /* UTF-8 must be stateless so we ignore iso2022. */
1460 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
1461 c
= term
->ucsdata
->unitab_ctrl
[c
];
1462 else c
= ((unsigned char)c
) | ATTR_ASCII
;
1464 } else if ((c
& 0xe0) == 0xc0) {
1465 term
->utf_size
= term
->utf_state
= 1;
1466 term
->utf_char
= (c
& 0x1f);
1467 } else if ((c
& 0xf0) == 0xe0) {
1468 term
->utf_size
= term
->utf_state
= 2;
1469 term
->utf_char
= (c
& 0x0f);
1470 } else if ((c
& 0xf8) == 0xf0) {
1471 term
->utf_size
= term
->utf_state
= 3;
1472 term
->utf_char
= (c
& 0x07);
1473 } else if ((c
& 0xfc) == 0xf8) {
1474 term
->utf_size
= term
->utf_state
= 4;
1475 term
->utf_char
= (c
& 0x03);
1476 } else if ((c
& 0xfe) == 0xfc) {
1477 term
->utf_size
= term
->utf_state
= 5;
1478 term
->utf_char
= (c
& 0x01);
1489 if ((c
& 0xC0) != 0x80) {
1492 term
->utf_state
= 0;
1495 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
1496 if (--term
->utf_state
)
1501 /* Is somebody trying to be evil! */
1503 (c
< 0x800 && term
->utf_size
>= 2) ||
1504 (c
< 0x10000 && term
->utf_size
>= 3) ||
1505 (c
< 0x200000 && term
->utf_size
>= 4) ||
1506 (c
< 0x4000000 && term
->utf_size
>= 5))
1509 /* Unicode line separator and paragraph separator are CR-LF */
1510 if (c
== 0x2028 || c
== 0x2029)
1513 /* High controls are probably a Baaad idea too. */
1517 /* The UTF-16 surrogates are not nice either. */
1518 /* The standard give the option of decoding these:
1519 * I don't want to! */
1520 if (c
>= 0xD800 && c
< 0xE000)
1523 /* ISO 10646 characters now limited to UTF-16 range. */
1527 /* This is currently a TagPhobic application.. */
1528 if (c
>= 0xE0000 && c
<= 0xE007F)
1531 /* U+FEFF is best seen as a null. */
1534 /* But U+FFFE is an error. */
1535 if (c
== 0xFFFE || c
== 0xFFFF)
1538 /* Oops this is a 16bit implementation */
1543 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1544 else if(term
->sco_acs
&&
1545 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
1547 if (term
->sco_acs
== 2) c
|= 0x80;
1550 switch (term
->cset_attr
[term
->cset
]) {
1552 * Linedraw characters are different from 'ESC ( B'
1553 * only for a small range. For ones outside that
1554 * range, make sure we use the same font as well as
1555 * the same encoding.
1558 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
1559 c
= term
->ucsdata
->unitab_ctrl
[c
];
1561 c
= ((unsigned char) c
) | ATTR_LINEDRW
;
1565 /* If UK-ASCII, make the '#' a LineDraw Pound */
1567 c
= '}' | ATTR_LINEDRW
;
1570 /*FALLTHROUGH*/ case ATTR_ASCII
:
1571 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
1572 c
= term
->ucsdata
->unitab_ctrl
[c
];
1574 c
= ((unsigned char) c
) | ATTR_ASCII
;
1577 if (c
>=' ') c
= ((unsigned char)c
) | ATTR_SCOACS
;
1583 /* How about C1 controls ? */
1584 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
1585 !term
->vt52_mode
&& has_compat(VT220
)) {
1586 term
->termstate
= SEEN_ESC
;
1587 term
->esc_query
= FALSE
;
1588 c
= '@' + (c
& 0x1F);
1591 /* Or the GL control. */
1592 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
1593 if (term
->curs
.x
&& !term
->wrapnext
)
1595 term
->wrapnext
= FALSE
;
1597 if (!term
->cfg
.no_dbackspace
) /* destructive bksp might be disabled */
1598 *term
->cpos
= (' ' | term
->curr_attr
| ATTR_ASCII
);
1600 /* Or normal C0 controls. */
1601 if ((c
& -32) == 0 && term
->termstate
< DO_CTRLS
) {
1603 case '\005': /* terminal type query */
1604 /* Strictly speaking this is VT100 but a VT100 defaults to
1605 * no response. Other terminals respond at their option.
1607 * Don't put a CR in the default string as this tends to
1608 * upset some weird software.
1610 * An xterm returns "xterm" (5 characters)
1612 compatibility(ANSIMIN
);
1614 char abuf
[256], *s
, *d
;
1616 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
; s
++) {
1618 if (*s
>= 'a' && *s
<= 'z')
1619 *d
++ = (*s
- ('a' - 1));
1620 else if ((*s
>= '@' && *s
<= '_') ||
1621 *s
== '?' || (*s
& 0x80))
1626 } else if (*s
== '^') {
1631 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
1637 struct beeptime
*newbeep
;
1638 unsigned long ticks
;
1640 ticks
= GETTICKCOUNT();
1642 if (!term
->beep_overloaded
) {
1643 newbeep
= snew(struct beeptime
);
1644 newbeep
->ticks
= ticks
;
1645 newbeep
->next
= NULL
;
1646 if (!term
->beephead
)
1647 term
->beephead
= newbeep
;
1649 term
->beeptail
->next
= newbeep
;
1650 term
->beeptail
= newbeep
;
1655 * Throw out any beeps that happened more than
1658 while (term
->beephead
&&
1659 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
1660 struct beeptime
*tmp
= term
->beephead
;
1661 term
->beephead
= tmp
->next
;
1663 if (!term
->beephead
)
1664 term
->beeptail
= NULL
;
1668 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
1669 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
1671 * If we're currently overloaded and the
1672 * last beep was more than s seconds ago,
1673 * leave overload mode.
1675 term
->beep_overloaded
= FALSE
;
1676 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
1677 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
1679 * Now, if we have n or more beeps
1680 * remaining in the queue, go into overload
1683 term
->beep_overloaded
= TRUE
;
1685 term
->lastbeep
= ticks
;
1688 * Perform an actual beep if we're not overloaded.
1690 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
1691 beep(term
->frontend
, term
->cfg
.beep
);
1692 if (term
->cfg
.beep
== BELL_VISUAL
) {
1693 term
->in_vbell
= TRUE
;
1694 term
->vbell_startpoint
= ticks
;
1702 if (term
->curs
.x
== 0 &&
1703 (term
->curs
.y
== 0 || term
->wrap
== 0))
1705 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
1706 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
1707 else if (term
->wrapnext
)
1708 term
->wrapnext
= FALSE
;
1712 term
->seen_disp_event
= TRUE
;
1715 compatibility(VT100
);
1719 compatibility(VT100
);
1723 if (term
->vt52_mode
)
1724 term
->termstate
= VT52_ESC
;
1726 compatibility(ANSIMIN
);
1727 term
->termstate
= SEEN_ESC
;
1728 term
->esc_query
= FALSE
;
1733 term
->wrapnext
= FALSE
;
1735 term
->seen_disp_event
= TRUE
;
1736 term
->paste_hold
= 0;
1738 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
1741 if (has_compat(SCOANSI
)) {
1742 move(term
, 0, 0, 0);
1743 erase_lots(term
, FALSE
, FALSE
, TRUE
);
1745 term
->wrapnext
= FALSE
;
1746 term
->seen_disp_event
= 1;
1750 compatibility(VT100
);
1752 if (term
->curs
.y
== term
->marg_b
)
1753 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1754 else if (term
->curs
.y
< term
->rows
- 1)
1756 if (term
->cfg
.lfhascr
)
1759 term
->wrapnext
= FALSE
;
1760 term
->seen_disp_event
= 1;
1761 term
->paste_hold
= 0;
1763 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
1767 pos old_curs
= term
->curs
;
1768 unsigned long *ldata
= lineptr(term
->curs
.y
);
1772 } while (term
->curs
.x
< term
->cols
- 1 &&
1773 !term
->tabs
[term
->curs
.x
]);
1775 if ((ldata
[term
->cols
] & LATTR_MODE
) != LATTR_NORM
) {
1776 if (term
->curs
.x
>= term
->cols
/ 2)
1777 term
->curs
.x
= term
->cols
/ 2 - 1;
1779 if (term
->curs
.x
>= term
->cols
)
1780 term
->curs
.x
= term
->cols
- 1;
1784 check_selection(term
, old_curs
, term
->curs
);
1786 term
->seen_disp_event
= TRUE
;
1790 switch (term
->termstate
) {
1792 /* Only graphic characters get this far;
1793 * ctrls are stripped above */
1794 if (term
->wrapnext
&& term
->wrap
) {
1795 term
->cpos
[1] |= LATTR_WRAPPED
;
1796 if (term
->curs
.y
== term
->marg_b
)
1797 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1798 else if (term
->curs
.y
< term
->rows
- 1)
1802 term
->wrapnext
= FALSE
;
1806 if (term
->selstate
!= NO_SELECTION
) {
1807 pos cursplus
= term
->curs
;
1809 check_selection(term
, term
->curs
, cursplus
);
1811 if (((c
& CSET_MASK
) == ATTR_ASCII
|| (c
& CSET_MASK
) == 0) &&
1813 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
1819 width
= wcwidth((wchar_t) c
);
1823 * If we're about to display a double-width
1824 * character starting in the rightmost
1825 * column, then we do something special
1826 * instead. We must print a space in the
1827 * last column of the screen, then wrap;
1828 * and we also set LATTR_WRAPPED2 which
1829 * instructs subsequent cut-and-pasting not
1830 * only to splice this line to the one
1831 * after it, but to ignore the space in the
1832 * last character position as well.
1833 * (Because what was actually output to the
1834 * terminal was presumably just a sequence
1835 * of CJK characters, and we don't want a
1836 * space to be pasted in the middle of
1837 * those just because they had the
1838 * misfortune to start in the wrong parity
1839 * column. xterm concurs.)
1841 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1842 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
1843 if (term
->curs
.x
== term
->cols
-1) {
1844 *term
->cpos
++ = ATTR_ASCII
| ' ' | term
->curr_attr
;
1845 *term
->cpos
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
1846 if (term
->curs
.y
== term
->marg_b
)
1847 scroll(term
, term
->marg_t
, term
->marg_b
,
1849 else if (term
->curs
.y
< term
->rows
- 1)
1853 /* Now we must check_boundary again, of course. */
1854 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1855 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
1857 *term
->cpos
++ = c
| term
->curr_attr
;
1858 *term
->cpos
++ = UCSWIDE
| term
->curr_attr
;
1862 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1863 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
1864 *term
->cpos
++ = c
| term
->curr_attr
;
1871 if (term
->curs
.x
== term
->cols
) {
1874 term
->wrapnext
= TRUE
;
1875 if (term
->wrap
&& term
->vt52_mode
) {
1876 term
->cpos
[1] |= LATTR_WRAPPED
;
1877 if (term
->curs
.y
== term
->marg_b
)
1878 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1879 else if (term
->curs
.y
< term
->rows
- 1)
1883 term
->wrapnext
= FALSE
;
1886 term
->seen_disp_event
= 1;
1891 * This state is virtually identical to SEEN_ESC, with the
1892 * exception that we have an OSC sequence in the pipeline,
1893 * and _if_ we see a backslash, we process it.
1897 term
->termstate
= TOPLEVEL
;
1900 /* else fall through */
1902 if (c
>= ' ' && c
<= '/') {
1903 if (term
->esc_query
)
1904 term
->esc_query
= -1;
1906 term
->esc_query
= c
;
1909 term
->termstate
= TOPLEVEL
;
1910 switch (ANSI(c
, term
->esc_query
)) {
1911 case '[': /* enter CSI mode */
1912 term
->termstate
= SEEN_CSI
;
1913 term
->esc_nargs
= 1;
1914 term
->esc_args
[0] = ARG_DEFAULT
;
1915 term
->esc_query
= FALSE
;
1917 case ']': /* xterm escape sequences */
1918 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1919 compatibility(OTHER
);
1920 term
->termstate
= SEEN_OSC
;
1921 term
->esc_args
[0] = 0;
1923 case '7': /* save cursor */
1924 compatibility(VT100
);
1925 save_cursor(term
, TRUE
);
1927 case '8': /* restore cursor */
1928 compatibility(VT100
);
1929 save_cursor(term
, FALSE
);
1930 term
->seen_disp_event
= TRUE
;
1933 compatibility(VT100
);
1934 term
->app_keypad_keys
= TRUE
;
1937 compatibility(VT100
);
1938 term
->app_keypad_keys
= FALSE
;
1940 case 'D': /* exactly equivalent to LF */
1941 compatibility(VT100
);
1942 if (term
->curs
.y
== term
->marg_b
)
1943 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1944 else if (term
->curs
.y
< term
->rows
- 1)
1947 term
->wrapnext
= FALSE
;
1948 term
->seen_disp_event
= TRUE
;
1950 case 'E': /* exactly equivalent to CR-LF */
1951 compatibility(VT100
);
1953 if (term
->curs
.y
== term
->marg_b
)
1954 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
1955 else if (term
->curs
.y
< term
->rows
- 1)
1958 term
->wrapnext
= FALSE
;
1959 term
->seen_disp_event
= TRUE
;
1961 case 'M': /* reverse index - backwards LF */
1962 compatibility(VT100
);
1963 if (term
->curs
.y
== term
->marg_t
)
1964 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
1965 else if (term
->curs
.y
> 0)
1968 term
->wrapnext
= FALSE
;
1969 term
->seen_disp_event
= TRUE
;
1971 case 'Z': /* terminal type query */
1972 compatibility(VT100
);
1974 ldisc_send(term
->ldisc
, term
->id_string
,
1975 strlen(term
->id_string
), 0);
1977 case 'c': /* restore power-on settings */
1978 compatibility(VT100
);
1980 if (term
->ldisc
) /* cause ldisc to notice changes */
1981 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1982 if (term
->reset_132
) {
1983 if (!term
->cfg
.no_remote_resize
)
1984 request_resize(term
->frontend
, 80, term
->rows
);
1985 term
->reset_132
= 0;
1989 term
->seen_disp_event
= TRUE
;
1991 case 'H': /* set a tab */
1992 compatibility(VT100
);
1993 term
->tabs
[term
->curs
.x
] = TRUE
;
1996 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1997 compatibility(VT100
);
1999 unsigned long *ldata
;
2003 for (i
= 0; i
< term
->rows
; i
++) {
2005 for (j
= 0; j
< term
->cols
; j
++)
2006 ldata
[j
] = ATTR_DEFAULT
| 'E';
2007 ldata
[term
->cols
] = 0;
2010 term
->seen_disp_event
= TRUE
;
2011 scrtop
.x
= scrtop
.y
= 0;
2013 scrbot
.y
= term
->rows
;
2014 check_selection(term
, scrtop
, scrbot
);
2018 case ANSI('3', '#'):
2019 case ANSI('4', '#'):
2020 case ANSI('5', '#'):
2021 case ANSI('6', '#'):
2022 compatibility(VT100
);
2024 unsigned long nlattr
;
2025 unsigned long *ldata
;
2026 switch (ANSI(c
, term
->esc_query
)) {
2027 case ANSI('3', '#'):
2030 case ANSI('4', '#'):
2033 case ANSI('5', '#'):
2034 nlattr
= LATTR_NORM
;
2036 default: /* spiritually case ANSI('6', '#'): */
2037 nlattr
= LATTR_WIDE
;
2040 ldata
= lineptr(term
->curs
.y
);
2041 ldata
[term
->cols
] &= ~LATTR_MODE
;
2042 ldata
[term
->cols
] |= nlattr
;
2046 case ANSI('A', '('):
2047 compatibility(VT100
);
2048 if (!term
->cfg
.no_remote_charset
)
2049 term
->cset_attr
[0] = ATTR_GBCHR
;
2051 case ANSI('B', '('):
2052 compatibility(VT100
);
2053 if (!term
->cfg
.no_remote_charset
)
2054 term
->cset_attr
[0] = ATTR_ASCII
;
2056 case ANSI('0', '('):
2057 compatibility(VT100
);
2058 if (!term
->cfg
.no_remote_charset
)
2059 term
->cset_attr
[0] = ATTR_LINEDRW
;
2061 case ANSI('U', '('):
2062 compatibility(OTHER
);
2063 if (!term
->cfg
.no_remote_charset
)
2064 term
->cset_attr
[0] = ATTR_SCOACS
;
2067 case ANSI('A', ')'):
2068 compatibility(VT100
);
2069 if (!term
->cfg
.no_remote_charset
)
2070 term
->cset_attr
[1] = ATTR_GBCHR
;
2072 case ANSI('B', ')'):
2073 compatibility(VT100
);
2074 if (!term
->cfg
.no_remote_charset
)
2075 term
->cset_attr
[1] = ATTR_ASCII
;
2077 case ANSI('0', ')'):
2078 compatibility(VT100
);
2079 if (!term
->cfg
.no_remote_charset
)
2080 term
->cset_attr
[1] = ATTR_LINEDRW
;
2082 case ANSI('U', ')'):
2083 compatibility(OTHER
);
2084 if (!term
->cfg
.no_remote_charset
)
2085 term
->cset_attr
[1] = ATTR_SCOACS
;
2088 case ANSI('8', '%'): /* Old Linux code */
2089 case ANSI('G', '%'):
2090 compatibility(OTHER
);
2091 if (!term
->cfg
.no_remote_charset
)
2094 case ANSI('@', '%'):
2095 compatibility(OTHER
);
2096 if (!term
->cfg
.no_remote_charset
)
2102 term
->termstate
= TOPLEVEL
; /* default */
2104 if (term
->esc_nargs
<= ARGS_MAX
) {
2105 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
2106 term
->esc_args
[term
->esc_nargs
- 1] = 0;
2107 term
->esc_args
[term
->esc_nargs
- 1] =
2108 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
2110 term
->termstate
= SEEN_CSI
;
2111 } else if (c
== ';') {
2112 if (++term
->esc_nargs
<= ARGS_MAX
)
2113 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
2114 term
->termstate
= SEEN_CSI
;
2115 } else if (c
< '@') {
2116 if (term
->esc_query
)
2117 term
->esc_query
= -1;
2119 term
->esc_query
= TRUE
;
2121 term
->esc_query
= c
;
2122 term
->termstate
= SEEN_CSI
;
2124 switch (ANSI(c
, term
->esc_query
)) {
2125 case 'A': /* move up N lines */
2126 move(term
, term
->curs
.x
,
2127 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
2128 term
->seen_disp_event
= TRUE
;
2130 case 'e': /* move down N lines */
2131 compatibility(ANSI
);
2134 move(term
, term
->curs
.x
,
2135 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
2136 term
->seen_disp_event
= TRUE
;
2138 case ANSI('c', '>'): /* report xterm version */
2139 compatibility(OTHER
);
2140 /* this reports xterm version 136 so that VIM can
2141 use the drag messages from the mouse reporting */
2143 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
2145 case 'a': /* move right N cols */
2146 compatibility(ANSI
);
2149 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
2151 term
->seen_disp_event
= TRUE
;
2153 case 'D': /* move left N cols */
2154 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
2156 term
->seen_disp_event
= TRUE
;
2158 case 'E': /* move down N lines and CR */
2159 compatibility(ANSI
);
2161 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
2162 term
->seen_disp_event
= TRUE
;
2164 case 'F': /* move up N lines and CR */
2165 compatibility(ANSI
);
2167 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
2168 term
->seen_disp_event
= TRUE
;
2171 case '`': /* set horizontal posn */
2172 compatibility(ANSI
);
2173 move(term
, def(term
->esc_args
[0], 1) - 1,
2175 term
->seen_disp_event
= TRUE
;
2177 case 'd': /* set vertical posn */
2178 compatibility(ANSI
);
2179 move(term
, term
->curs
.x
,
2180 ((term
->dec_om ? term
->marg_t
: 0) +
2181 def(term
->esc_args
[0], 1) - 1),
2182 (term
->dec_om ?
2 : 0));
2183 term
->seen_disp_event
= TRUE
;
2186 case 'f': /* set horz and vert posns at once */
2187 if (term
->esc_nargs
< 2)
2188 term
->esc_args
[1] = ARG_DEFAULT
;
2189 move(term
, def(term
->esc_args
[1], 1) - 1,
2190 ((term
->dec_om ? term
->marg_t
: 0) +
2191 def(term
->esc_args
[0], 1) - 1),
2192 (term
->dec_om ?
2 : 0));
2193 term
->seen_disp_event
= TRUE
;
2195 case 'J': /* erase screen or parts of it */
2197 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2200 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
2203 term
->seen_disp_event
= TRUE
;
2205 case 'K': /* erase line or parts of it */
2207 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2210 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
2212 term
->seen_disp_event
= TRUE
;
2214 case 'L': /* insert lines */
2215 compatibility(VT102
);
2216 if (term
->curs
.y
<= term
->marg_b
)
2217 scroll(term
, term
->curs
.y
, term
->marg_b
,
2218 -def(term
->esc_args
[0], 1), FALSE
);
2220 term
->seen_disp_event
= TRUE
;
2222 case 'M': /* delete lines */
2223 compatibility(VT102
);
2224 if (term
->curs
.y
<= term
->marg_b
)
2225 scroll(term
, term
->curs
.y
, term
->marg_b
,
2226 def(term
->esc_args
[0], 1),
2229 term
->seen_disp_event
= TRUE
;
2231 case '@': /* insert chars */
2232 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2233 compatibility(VT102
);
2234 insch(term
, def(term
->esc_args
[0], 1));
2235 term
->seen_disp_event
= TRUE
;
2237 case 'P': /* delete chars */
2238 compatibility(VT102
);
2239 insch(term
, -def(term
->esc_args
[0], 1));
2240 term
->seen_disp_event
= TRUE
;
2242 case 'c': /* terminal type query */
2243 compatibility(VT100
);
2244 /* This is the response for a VT102 */
2246 ldisc_send(term
->ldisc
, term
->id_string
,
2247 strlen(term
->id_string
), 0);
2249 case 'n': /* cursor position query */
2251 if (term
->esc_args
[0] == 6) {
2253 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
2255 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
2256 } else if (term
->esc_args
[0] == 5) {
2257 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
2261 case 'h': /* toggle modes to high */
2263 compatibility(VT100
);
2266 for (i
= 0; i
< term
->esc_nargs
; i
++)
2267 toggle_mode(term
, term
->esc_args
[i
],
2268 term
->esc_query
, TRUE
);
2273 compatibility(VT100
);
2275 if (term
->esc_nargs
!= 1) break;
2276 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
2277 term
->printing
= TRUE
;
2278 term
->only_printing
= !term
->esc_query
;
2279 term
->print_state
= 0;
2280 term_print_setup(term
);
2281 } else if (term
->esc_args
[0] == 4 &&
2283 term_print_finish(term
);
2287 case 'l': /* toggle modes to low */
2289 compatibility(VT100
);
2292 for (i
= 0; i
< term
->esc_nargs
; i
++)
2293 toggle_mode(term
, term
->esc_args
[i
],
2294 term
->esc_query
, FALSE
);
2297 case 'g': /* clear tabs */
2298 compatibility(VT100
);
2299 if (term
->esc_nargs
== 1) {
2300 if (term
->esc_args
[0] == 0) {
2301 term
->tabs
[term
->curs
.x
] = FALSE
;
2302 } else if (term
->esc_args
[0] == 3) {
2304 for (i
= 0; i
< term
->cols
; i
++)
2305 term
->tabs
[i
] = FALSE
;
2309 case 'r': /* set scroll margins */
2310 compatibility(VT100
);
2311 if (term
->esc_nargs
<= 2) {
2313 top
= def(term
->esc_args
[0], 1) - 1;
2314 bot
= (term
->esc_nargs
<= 1
2315 || term
->esc_args
[1] == 0 ?
2317 def(term
->esc_args
[1], term
->rows
)) - 1;
2318 if (bot
>= term
->rows
)
2319 bot
= term
->rows
- 1;
2320 /* VTTEST Bug 9 - if region is less than 2 lines
2321 * don't change region.
2323 if (bot
- top
> 0) {
2328 * I used to think the cursor should be
2329 * placed at the top of the newly marginned
2330 * area. Apparently not: VMS TPU falls over
2333 * Well actually it should for
2336 term
->curs
.y
= (term
->dec_om ?
2339 term
->seen_disp_event
= TRUE
;
2343 case 'm': /* set graphics rendition */
2346 * A VT100 without the AVO only had one
2347 * attribute, either underline or
2348 * reverse video depending on the
2349 * cursor type, this was selected by
2353 * This is sometimes DIM, eg on the
2356 * This is sometimes INVIS various ANSI.
2358 * This like 22 disables BOLD, DIM and INVIS
2360 * The ANSI colours appear on any
2361 * terminal that has colour (obviously)
2362 * but the interaction between sgr0 and
2363 * the colours varies but is usually
2364 * related to the background colour
2365 * erase item. The interaction between
2366 * colour attributes and the mono ones
2367 * is also very implementation
2370 * The 39 and 49 attributes are likely
2371 * to be unimplemented.
2374 for (i
= 0; i
< term
->esc_nargs
; i
++) {
2375 switch (def(term
->esc_args
[i
], 0)) {
2376 case 0: /* restore defaults */
2377 term
->curr_attr
= ATTR_DEFAULT
;
2379 case 1: /* enable bold */
2380 compatibility(VT100AVO
);
2381 term
->curr_attr
|= ATTR_BOLD
;
2383 case 21: /* (enable double underline) */
2384 compatibility(OTHER
);
2385 case 4: /* enable underline */
2386 compatibility(VT100AVO
);
2387 term
->curr_attr
|= ATTR_UNDER
;
2389 case 5: /* enable blink */
2390 compatibility(VT100AVO
);
2391 term
->curr_attr
|= ATTR_BLINK
;
2393 case 7: /* enable reverse video */
2394 term
->curr_attr
|= ATTR_REVERSE
;
2396 case 10: /* SCO acs off */
2397 compatibility(SCOANSI
);
2398 if (term
->cfg
.no_remote_charset
) break;
2399 term
->sco_acs
= 0; break;
2400 case 11: /* SCO acs on */
2401 compatibility(SCOANSI
);
2402 if (term
->cfg
.no_remote_charset
) break;
2403 term
->sco_acs
= 1; break;
2404 case 12: /* SCO acs on, |0x80 */
2405 compatibility(SCOANSI
);
2406 if (term
->cfg
.no_remote_charset
) break;
2407 term
->sco_acs
= 2; break;
2408 case 22: /* disable bold */
2409 compatibility2(OTHER
, VT220
);
2410 term
->curr_attr
&= ~ATTR_BOLD
;
2412 case 24: /* disable underline */
2413 compatibility2(OTHER
, VT220
);
2414 term
->curr_attr
&= ~ATTR_UNDER
;
2416 case 25: /* disable blink */
2417 compatibility2(OTHER
, VT220
);
2418 term
->curr_attr
&= ~ATTR_BLINK
;
2420 case 27: /* disable reverse video */
2421 compatibility2(OTHER
, VT220
);
2422 term
->curr_attr
&= ~ATTR_REVERSE
;
2433 term
->curr_attr
&= ~ATTR_FGMASK
;
2435 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
2445 /* xterm-style bright foreground */
2446 term
->curr_attr
&= ~ATTR_FGMASK
;
2448 ((term
->esc_args
[i
] - 90 + 16)
2451 case 39: /* default-foreground */
2452 term
->curr_attr
&= ~ATTR_FGMASK
;
2453 term
->curr_attr
|= ATTR_DEFFG
;
2464 term
->curr_attr
&= ~ATTR_BGMASK
;
2466 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
2476 /* xterm-style bright background */
2477 term
->curr_attr
&= ~ATTR_BGMASK
;
2479 ((term
->esc_args
[i
] - 100 + 16)
2482 case 49: /* default-background */
2483 term
->curr_attr
&= ~ATTR_BGMASK
;
2484 term
->curr_attr
|= ATTR_DEFBG
;
2489 term
->erase_char
= (' ' | ATTR_ASCII
|
2495 case 's': /* save cursor */
2496 save_cursor(term
, TRUE
);
2498 case 'u': /* restore cursor */
2499 save_cursor(term
, FALSE
);
2500 term
->seen_disp_event
= TRUE
;
2502 case 't': /* set page size - ie window height */
2504 * VT340/VT420 sequence DECSLPP, DEC only allows values
2505 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2506 * illegal values (eg first arg 1..9) for window changing
2509 if (term
->esc_nargs
<= 1
2510 && (term
->esc_args
[0] < 1 ||
2511 term
->esc_args
[0] >= 24)) {
2512 compatibility(VT340TEXT
);
2513 if (!term
->cfg
.no_remote_resize
)
2514 request_resize(term
->frontend
, term
->cols
,
2515 def(term
->esc_args
[0], 24));
2517 } else if (term
->esc_nargs
>= 1 &&
2518 term
->esc_args
[0] >= 1 &&
2519 term
->esc_args
[0] < 24) {
2520 compatibility(OTHER
);
2522 switch (term
->esc_args
[0]) {
2526 set_iconic(term
->frontend
, FALSE
);
2529 set_iconic(term
->frontend
, TRUE
);
2532 if (term
->esc_nargs
>= 3) {
2533 if (!term
->cfg
.no_remote_resize
)
2534 move_window(term
->frontend
,
2535 def(term
->esc_args
[1], 0),
2536 def(term
->esc_args
[2], 0));
2540 /* We should resize the window to a given
2541 * size in pixels here, but currently our
2542 * resizing code isn't healthy enough to
2547 set_zorder(term
->frontend
, TRUE
);
2550 /* move to bottom */
2551 set_zorder(term
->frontend
, FALSE
);
2554 refresh_window(term
->frontend
);
2557 if (term
->esc_nargs
>= 3) {
2558 if (!term
->cfg
.no_remote_resize
)
2559 request_resize(term
->frontend
,
2560 def(term
->esc_args
[2], term
->cfg
.width
),
2561 def(term
->esc_args
[1], term
->cfg
.height
));
2565 if (term
->esc_nargs
>= 2)
2566 set_zoomed(term
->frontend
,
2572 ldisc_send(term
->ldisc
,
2573 is_iconic(term
->frontend
) ?
2574 "\033[1t" : "\033[2t", 4, 0);
2578 get_window_pos(term
->frontend
, &x
, &y
);
2579 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
2580 ldisc_send(term
->ldisc
, buf
, len
, 0);
2585 get_window_pixels(term
->frontend
, &x
, &y
);
2586 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
2587 ldisc_send(term
->ldisc
, buf
, len
, 0);
2592 len
= sprintf(buf
, "\033[8;%d;%dt",
2593 term
->rows
, term
->cols
);
2594 ldisc_send(term
->ldisc
, buf
, len
, 0);
2599 * Hmmm. Strictly speaking we
2600 * should return `the size of the
2601 * screen in characters', but
2602 * that's not easy: (a) window
2603 * furniture being what it is it's
2604 * hard to compute, and (b) in
2605 * resize-font mode maximising the
2606 * window wouldn't change the
2607 * number of characters. *shrug*. I
2608 * think we'll ignore it for the
2609 * moment and see if anyone
2610 * complains, and then ask them
2611 * what they would like it to do.
2616 !term
->cfg
.no_remote_qtitle
) {
2617 p
= get_window_title(term
->frontend
, TRUE
);
2619 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
2620 ldisc_send(term
->ldisc
, p
, len
, 0);
2621 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
2626 !term
->cfg
.no_remote_qtitle
) {
2627 p
= get_window_title(term
->frontend
,FALSE
);
2629 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
2630 ldisc_send(term
->ldisc
, p
, len
, 0);
2631 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
2638 compatibility(SCOANSI
);
2639 scroll(term
, term
->marg_t
, term
->marg_b
,
2640 def(term
->esc_args
[0], 1), TRUE
);
2642 term
->wrapnext
= FALSE
;
2643 term
->seen_disp_event
= TRUE
;
2646 compatibility(SCOANSI
);
2647 scroll(term
, term
->marg_t
, term
->marg_b
,
2648 -def(term
->esc_args
[0], 1), TRUE
);
2650 term
->wrapnext
= FALSE
;
2651 term
->seen_disp_event
= TRUE
;
2653 case ANSI('|', '*'):
2654 /* VT420 sequence DECSNLS
2655 * Set number of lines on screen
2656 * VT420 uses VGA like hardware and can support any size in
2657 * reasonable range (24..49 AIUI) with no default specified.
2659 compatibility(VT420
);
2660 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
2661 if (!term
->cfg
.no_remote_resize
)
2662 request_resize(term
->frontend
, term
->cols
,
2663 def(term
->esc_args
[0],
2668 case ANSI('|', '$'):
2669 /* VT340/VT420 sequence DECSCPP
2670 * Set number of columns per page
2671 * Docs imply range is only 80 or 132, but I'll allow any.
2673 compatibility(VT340TEXT
);
2674 if (term
->esc_nargs
<= 1) {
2675 if (!term
->cfg
.no_remote_resize
)
2676 request_resize(term
->frontend
,
2677 def(term
->esc_args
[0],
2678 term
->cfg
.width
), term
->rows
);
2682 case 'X': /* write N spaces w/o moving cursor */
2683 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2684 compatibility(ANSIMIN
);
2686 int n
= def(term
->esc_args
[0], 1);
2688 unsigned long *p
= term
->cpos
;
2689 if (n
> term
->cols
- term
->curs
.x
)
2690 n
= term
->cols
- term
->curs
.x
;
2691 cursplus
= term
->curs
;
2693 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2694 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
2695 check_selection(term
, term
->curs
, cursplus
);
2697 *p
++ = term
->erase_char
;
2698 term
->seen_disp_event
= TRUE
;
2701 case 'x': /* report terminal characteristics */
2702 compatibility(VT100
);
2705 int i
= def(term
->esc_args
[0], 0);
2706 if (i
== 0 || i
== 1) {
2707 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
2709 ldisc_send(term
->ldisc
, buf
, 20, 0);
2713 case 'Z': /* BackTab for xterm */
2714 compatibility(OTHER
);
2716 int i
= def(term
->esc_args
[0], 1);
2717 pos old_curs
= term
->curs
;
2719 for(;i
>0 && term
->curs
.x
>0; i
--) {
2722 } while (term
->curs
.x
>0 &&
2723 !term
->tabs
[term
->curs
.x
]);
2726 check_selection(term
, old_curs
, term
->curs
);
2729 case ANSI('L', '='):
2730 compatibility(OTHER
);
2731 term
->use_bce
= (term
->esc_args
[0] <= 0);
2732 term
->erase_char
= ERASE_CHAR
;
2734 term
->erase_char
= (' ' | ATTR_ASCII
|
2736 (ATTR_FGMASK
| ATTR_BGMASK
)));
2738 case ANSI('E', '='):
2739 compatibility(OTHER
);
2740 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
2742 case ANSI('p', '"'):
2744 * Allow the host to make this emulator a
2745 * 'perfect' VT102. This first appeared in
2746 * the VT220, but we do need to get back to
2747 * PuTTY mode so I won't check it.
2749 * The arg in 40..42,50 are a PuTTY extension.
2750 * The 2nd arg, 8bit vs 7bit is not checked.
2752 * Setting VT102 mode should also change
2753 * the Fkeys to generate PF* codes as a
2754 * real VT102 has no Fkeys. The VT220 does
2755 * this, F11..F13 become ESC,BS,LF other
2756 * Fkeys send nothing.
2758 * Note ESC c will NOT change this!
2761 switch (term
->esc_args
[0]) {
2763 term
->compatibility_level
&= ~TM_VTXXX
;
2764 term
->compatibility_level
|= TM_VT102
;
2767 term
->compatibility_level
&= ~TM_VTXXX
;
2768 term
->compatibility_level
|= TM_VT220
;
2772 if (term
->esc_args
[0] > 60 &&
2773 term
->esc_args
[0] < 70)
2774 term
->compatibility_level
|= TM_VTXXX
;
2778 term
->compatibility_level
&= TM_VTXXX
;
2781 term
->compatibility_level
= TM_PUTTY
;
2784 term
->compatibility_level
= TM_SCOANSI
;
2788 term
->compatibility_level
= TM_PUTTY
;
2794 /* Change the response to CSI c */
2795 if (term
->esc_args
[0] == 50) {
2798 strcpy(term
->id_string
, "\033[?");
2799 for (i
= 1; i
< term
->esc_nargs
; i
++) {
2801 strcat(term
->id_string
, ";");
2802 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
2803 strcat(term
->id_string
, lbuf
);
2805 strcat(term
->id_string
, "c");
2808 /* Is this a good idea ?
2809 * Well we should do a soft reset at this point ...
2811 if (!has_compat(VT420
) && has_compat(VT100
)) {
2812 if (!term
->cfg
.no_remote_resize
) {
2813 if (term
->reset_132
)
2814 request_resize(132, 24);
2816 request_resize(80, 24);
2824 term
->osc_w
= FALSE
;
2826 case 'P': /* Linux palette sequence */
2827 term
->termstate
= SEEN_OSC_P
;
2828 term
->osc_strlen
= 0;
2830 case 'R': /* Linux palette reset */
2831 palette_reset(term
->frontend
);
2832 term_invalidate(term
);
2833 term
->termstate
= TOPLEVEL
;
2835 case 'W': /* word-set */
2836 term
->termstate
= SEEN_OSC_W
;
2849 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
2853 * Grotty hack to support xterm and DECterm title
2854 * sequences concurrently.
2856 if (term
->esc_args
[0] == 2) {
2857 term
->esc_args
[0] = 1;
2860 /* else fall through */
2862 term
->termstate
= OSC_STRING
;
2863 term
->osc_strlen
= 0;
2868 * This OSC stuff is EVIL. It takes just one character to get into
2869 * sysline mode and it's not initially obvious how to get out.
2870 * So I've added CR and LF as string aborts.
2871 * This shouldn't effect compatibility as I believe embedded
2872 * control characters are supposed to be interpreted (maybe?)
2873 * and they don't display anything useful anyway.
2877 if (c
== '\012' || c
== '\015') {
2878 term
->termstate
= TOPLEVEL
;
2879 } else if (c
== 0234 || c
== '\007') {
2881 * These characters terminate the string; ST and BEL
2882 * terminate the sequence and trigger instant
2883 * processing of it, whereas ESC goes back to SEEN_ESC
2884 * mode unless it is followed by \, in which case it is
2885 * synonymous with ST in the first place.
2888 term
->termstate
= TOPLEVEL
;
2889 } else if (c
== '\033')
2890 term
->termstate
= OSC_MAYBE_ST
;
2891 else if (term
->osc_strlen
< OSC_STR_MAX
)
2892 term
->osc_string
[term
->osc_strlen
++] = c
;
2896 int max
= (term
->osc_strlen
== 0 ?
21 : 16);
2898 if (c
>= '0' && c
<= '9')
2900 else if (c
>= 'A' && c
<= 'A' + max
- 10)
2902 else if (c
>= 'a' && c
<= 'a' + max
- 10)
2905 term
->termstate
= TOPLEVEL
;
2908 term
->osc_string
[term
->osc_strlen
++] = val
;
2909 if (term
->osc_strlen
>= 7) {
2910 palette_set(term
->frontend
, term
->osc_string
[0],
2911 term
->osc_string
[1] * 16 + term
->osc_string
[2],
2912 term
->osc_string
[3] * 16 + term
->osc_string
[4],
2913 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
2914 term_invalidate(term
);
2915 term
->termstate
= TOPLEVEL
;
2931 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
2934 term
->termstate
= OSC_STRING
;
2935 term
->osc_strlen
= 0;
2939 term
->termstate
= TOPLEVEL
;
2940 term
->seen_disp_event
= TRUE
;
2943 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
2946 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
2949 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
2952 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
2955 * From the VT100 Manual
2956 * NOTE: The special graphics characters in the VT100
2957 * are different from those in the VT52
2959 * From VT102 manual:
2960 * 137 _ Blank - Same
2961 * 140 ` Reserved - Humm.
2962 * 141 a Solid rectangle - Similar
2963 * 142 b 1/ - Top half of fraction for the
2964 * 143 c 3/ - subscript numbers below.
2967 * 146 f Degrees - Same
2968 * 147 g Plus or minus - Same
2970 * 151 i Ellipsis (dots)
2973 * 154 l Bar at scan 0
2974 * 155 m Bar at scan 1
2975 * 156 n Bar at scan 2
2976 * 157 o Bar at scan 3 - Similar
2977 * 160 p Bar at scan 4 - Similar
2978 * 161 q Bar at scan 5 - Similar
2979 * 162 r Bar at scan 6 - Same
2980 * 163 s Bar at scan 7 - Similar
2995 term
->cset_attr
[term
->cset
= 0] = ATTR_LINEDRW
;
2998 term
->cset_attr
[term
->cset
= 0] = ATTR_ASCII
;
3001 move(term
, 0, 0, 0);
3004 if (term
->curs
.y
== 0)
3005 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
3006 else if (term
->curs
.y
> 0)
3009 term
->wrapnext
= FALSE
;
3012 erase_lots(term
, FALSE
, FALSE
, TRUE
);
3016 erase_lots(term
, TRUE
, FALSE
, TRUE
);
3020 /* XXX Print cursor line */
3023 /* XXX Start controller mode */
3026 /* XXX Stop controller mode */
3030 term
->termstate
= VT52_Y1
;
3034 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
3037 term
->app_keypad_keys
= TRUE
;
3040 term
->app_keypad_keys
= FALSE
;
3043 /* XXX This should switch to VT100 mode not current or default
3044 * VT mode. But this will only have effect in a VT220+
3047 term
->vt52_mode
= FALSE
;
3048 term
->blink_is_real
= term
->cfg
.blinktext
;
3052 /* XXX Enter auto print mode */
3055 /* XXX Exit auto print mode */
3058 /* XXX Print screen */
3064 /* compatibility(ATARI) */
3065 move(term
, 0, 0, 0);
3066 erase_lots(term
, FALSE
, FALSE
, TRUE
);
3070 /* compatibility(ATARI) */
3071 if (term
->curs
.y
<= term
->marg_b
)
3072 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
3075 /* compatibility(ATARI) */
3076 if (term
->curs
.y
<= term
->marg_b
)
3077 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
3080 /* compatibility(ATARI) */
3081 term
->termstate
= VT52_FG
;
3084 /* compatibility(ATARI) */
3085 term
->termstate
= VT52_BG
;
3088 /* compatibility(ATARI) */
3089 erase_lots(term
, FALSE
, TRUE
, FALSE
);
3093 /* compatibility(ATARI) */
3094 term
->cursor_on
= TRUE
;
3097 /* compatibility(ATARI) */
3098 term
->cursor_on
= FALSE
;
3100 /* case 'j': Save cursor position - broken on ST */
3101 /* case 'k': Restore cursor position */
3103 /* compatibility(ATARI) */
3104 erase_lots(term
, TRUE
, TRUE
, TRUE
);
3106 term
->wrapnext
= FALSE
;
3110 /* compatibility(ATARI) */
3111 erase_lots(term
, TRUE
, TRUE
, FALSE
);
3114 /* compatibility(ATARI) */
3115 term
->curr_attr
|= ATTR_REVERSE
;
3118 /* compatibility(ATARI) */
3119 term
->curr_attr
&= ~ATTR_REVERSE
;
3121 case 'v': /* wrap Autowrap on - Wyse style */
3122 /* compatibility(ATARI) */
3125 case 'w': /* Autowrap off */
3126 /* compatibility(ATARI) */
3131 /* compatibility(OTHER) */
3132 term
->vt52_bold
= FALSE
;
3133 term
->curr_attr
= ATTR_DEFAULT
;
3135 term
->erase_char
= (' ' | ATTR_ASCII
|
3137 (ATTR_FGMASK
| ATTR_BGMASK
)));
3140 /* compatibility(VI50) */
3141 term
->curr_attr
|= ATTR_UNDER
;
3144 /* compatibility(VI50) */
3145 term
->curr_attr
&= ~ATTR_UNDER
;
3148 /* compatibility(VI50) */
3149 term
->vt52_bold
= TRUE
;
3150 term
->curr_attr
|= ATTR_BOLD
;
3153 /* compatibility(VI50) */
3154 term
->vt52_bold
= FALSE
;
3155 term
->curr_attr
&= ~ATTR_BOLD
;
3161 term
->termstate
= VT52_Y2
;
3162 move(term
, term
->curs
.x
, c
- ' ', 0);
3165 term
->termstate
= TOPLEVEL
;
3166 move(term
, c
- ' ', term
->curs
.y
, 0);
3171 term
->termstate
= TOPLEVEL
;
3172 term
->curr_attr
&= ~ATTR_FGMASK
;
3173 term
->curr_attr
&= ~ATTR_BOLD
;
3174 term
->curr_attr
|= (c
& 0x7) << ATTR_FGSHIFT
;
3175 if ((c
& 0x8) || term
->vt52_bold
)
3176 term
->curr_attr
|= ATTR_BOLD
;
3179 term
->erase_char
= (' ' | ATTR_ASCII
|
3181 (ATTR_FGMASK
| ATTR_BGMASK
)));
3184 term
->termstate
= TOPLEVEL
;
3185 term
->curr_attr
&= ~ATTR_BGMASK
;
3186 term
->curr_attr
&= ~ATTR_BLINK
;
3187 term
->curr_attr
|= (c
& 0x7) << ATTR_BGSHIFT
;
3189 /* Note: bold background */
3191 term
->curr_attr
|= ATTR_BLINK
;
3194 term
->erase_char
= (' ' | ATTR_ASCII
|
3196 (ATTR_FGMASK
| ATTR_BGMASK
)));
3199 default: break; /* placate gcc warning about enum use */
3201 if (term
->selstate
!= NO_SELECTION
) {
3202 pos cursplus
= term
->curs
;
3204 check_selection(term
, term
->curs
, cursplus
);
3208 term_print_flush(term
);
3213 * Compare two lines to determine whether they are sufficiently
3214 * alike to scroll-optimise one to the other. Return the degree of
3217 static int linecmp(Terminal
*term
, unsigned long *a
, unsigned long *b
)
3221 for (i
= n
= 0; i
< term
->cols
; i
++)
3222 n
+= (*a
++ == *b
++);
3228 * Given a context, update the window. Out of paranoia, we don't
3229 * allow WM_PAINT responses to do scrolling optimisations.
3231 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
3233 int i
, j
, our_curs_y
, our_curs_x
;
3234 unsigned long rv
, cursor
;
3237 long cursor_background
= ERASE_CHAR
;
3238 unsigned long ticks
;
3239 #ifdef OPTIMISE_SCROLL
3240 struct scrollregion
*sr
;
3241 #endif /* OPTIMISE_SCROLL */
3244 * Check the visual bell state.
3246 if (term
->in_vbell
) {
3247 ticks
= GETTICKCOUNT();
3248 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
3249 term
->in_vbell
= FALSE
;
3252 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
3255 * screen array, disptop, scrtop,
3257 * cfg.blinkpc, blink_is_real, tblinker,
3258 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
3261 /* Has the cursor position or type changed ? */
3262 if (term
->cursor_on
) {
3263 if (term
->has_focus
) {
3264 if (term
->blinker
|| !term
->cfg
.blink_cur
)
3265 cursor
= TATTR_ACTCURS
;
3269 cursor
= TATTR_PASCURS
;
3271 cursor
|= TATTR_RIGHTCURS
;
3274 our_curs_y
= term
->curs
.y
- term
->disptop
;
3277 * Adjust the cursor position in the case where it's
3278 * resting on the right-hand half of a CJK wide character.
3279 * xterm's behaviour here, which seems adequate to me, is
3280 * to display the cursor covering the _whole_ character,
3281 * exactly as if it were one space to the left.
3283 unsigned long *ldata
= lineptr(term
->curs
.y
);
3284 our_curs_x
= term
->curs
.x
;
3285 if (our_curs_x
> 0 &&
3286 (ldata
[our_curs_x
] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3290 if (term
->dispcurs
&& (term
->curstype
!= cursor
||
3292 term
->disptext
+ our_curs_y
* (term
->cols
+ 1) +
3294 if (term
->dispcurs
> term
->disptext
&&
3295 (*term
->dispcurs
& (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3296 term
->dispcurs
[-1] |= ATTR_INVALID
;
3297 if ( (term
->dispcurs
[1] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3298 term
->dispcurs
[1] |= ATTR_INVALID
;
3299 *term
->dispcurs
|= ATTR_INVALID
;
3302 term
->dispcurs
= NULL
;
3304 #ifdef OPTIMISE_SCROLL
3306 sr
= term
->scrollhead
;
3308 struct scrollregion
*next
= sr
->next
;
3309 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
3313 term
->scrollhead
= term
->scrolltail
= NULL
;
3314 #endif /* OPTIMISE_SCROLL */
3316 /* The normal screen data */
3317 for (i
= 0; i
< term
->rows
; i
++) {
3318 unsigned long *ldata
;
3320 int idx
, dirty_line
, dirty_run
, selected
;
3321 unsigned long attr
= 0;
3322 int updated_line
= 0;
3325 int last_run_dirty
= 0;
3327 scrpos
.y
= i
+ term
->disptop
;
3328 ldata
= lineptr(scrpos
.y
);
3329 lattr
= (ldata
[term
->cols
] & LATTR_MODE
);
3331 idx
= i
* (term
->cols
+ 1);
3332 dirty_run
= dirty_line
= (ldata
[term
->cols
] !=
3333 term
->disptext
[idx
+ term
->cols
]);
3334 term
->disptext
[idx
+ term
->cols
] = ldata
[term
->cols
];
3336 for (j
= 0; j
< term
->cols
; j
++, idx
++) {
3337 unsigned long tattr
, tchar
;
3338 unsigned long *d
= ldata
+ j
;
3342 tchar
= (*d
& (CHAR_MASK
| CSET_MASK
));
3343 tattr
= (*d
& (ATTR_MASK
^ CSET_MASK
));
3344 switch (tchar
& CSET_MASK
) {
3346 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
3349 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
3352 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
3355 tattr
|= (tchar
& CSET_MASK
);
3357 if ((d
[1] & (CHAR_MASK
| CSET_MASK
)) == UCSWIDE
)
3360 /* Video reversing things */
3361 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
3362 if (term
->seltype
== LEXICOGRAPHIC
)
3363 selected
= (posle(term
->selstart
, scrpos
) &&
3364 poslt(scrpos
, term
->selend
));
3366 selected
= (posPle(term
->selstart
, scrpos
) &&
3367 posPlt(scrpos
, term
->selend
));
3371 ^ (selected ? ATTR_REVERSE
: 0));
3373 /* 'Real' blinking ? */
3374 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
3375 if (term
->has_focus
&& term
->tblinker
) {
3376 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
3378 tattr
&= ~ATTR_BLINK
;
3382 * Check the font we'll _probably_ be using to see if
3383 * the character is wide when we don't want it to be.
3385 if ((tchar
| tattr
) != (term
->disptext
[idx
]& ~ATTR_NARROW
)) {
3386 if ((tattr
& ATTR_WIDE
) == 0 &&
3387 char_width(ctx
, (tchar
| tattr
) & 0xFFFF) == 2)
3388 tattr
|= ATTR_NARROW
;
3389 } else if (term
->disptext
[idx
]&ATTR_NARROW
)
3390 tattr
|= ATTR_NARROW
;
3392 /* Cursor here ? Save the 'background' */
3393 if (i
== our_curs_y
&& j
== our_curs_x
) {
3394 cursor_background
= tattr
| tchar
;
3395 term
->dispcurs
= term
->disptext
+ idx
;
3398 if ((term
->disptext
[idx
] ^ tattr
) & ATTR_WIDE
)
3401 break_run
= (((tattr
^ attr
) & term
->attr_mask
) ||
3402 j
- start
>= sizeof(ch
));
3404 /* Special hack for VT100 Linedraw glyphs */
3405 if ((attr
& CSET_MASK
) == 0x2300 && tchar
>= 0xBA
3406 && tchar
<= 0xBD) break_run
= TRUE
;
3408 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
3409 if ((tchar
| tattr
) == term
->disptext
[idx
])
3411 else if (!dirty_run
&& ccount
== 1)
3416 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
3417 do_text(ctx
, start
, i
, ch
, ccount
, attr
, lattr
);
3423 if (term
->ucsdata
->dbcs_screenfont
)
3424 last_run_dirty
= dirty_run
;
3425 dirty_run
= dirty_line
;
3428 if ((tchar
| tattr
) != term
->disptext
[idx
])
3430 ch
[ccount
++] = (char) tchar
;
3431 term
->disptext
[idx
] = tchar
| tattr
;
3433 /* If it's a wide char step along to the next one. */
3434 if (tattr
& ATTR_WIDE
) {
3435 if (++j
< term
->cols
) {
3439 * By construction above, the cursor should not
3440 * be on the right-hand half of this character.
3443 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
3444 if (term
->disptext
[idx
] != *d
)
3446 term
->disptext
[idx
] = *d
;
3450 if (dirty_run
&& ccount
> 0) {
3451 do_text(ctx
, start
, i
, ch
, ccount
, attr
, lattr
);
3455 /* Cursor on this line ? (and changed) */
3456 if (i
== our_curs_y
&& (term
->curstype
!= cursor
|| updated_line
)) {
3457 ch
[0] = (char) (cursor_background
& CHAR_MASK
);
3458 attr
= (cursor_background
& ATTR_MASK
) | cursor
;
3459 do_cursor(ctx
, our_curs_x
, i
, ch
, 1, attr
, lattr
);
3460 term
->curstype
= cursor
;
3466 * Flick the switch that says if blinking things should be shown or hidden.
3469 void term_blink(Terminal
*term
, int flg
)
3471 long now
, blink_diff
;
3473 now
= GETTICKCOUNT();
3474 blink_diff
= now
- term
->last_tblink
;
3476 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3477 if (blink_diff
< 0 || blink_diff
> (TICKSPERSEC
* 9 / 20)) {
3478 term
->last_tblink
= now
;
3479 term
->tblinker
= !term
->tblinker
;
3484 term
->last_blink
= now
;
3488 blink_diff
= now
- term
->last_blink
;
3490 /* Make sure the cursor blinks no faster than system blink rate */
3491 if (blink_diff
>= 0 && blink_diff
< (long) CURSORBLINK
)
3494 term
->last_blink
= now
;
3495 term
->blinker
= !term
->blinker
;
3499 * Invalidate the whole screen so it will be repainted in full.
3501 void term_invalidate(Terminal
*term
)
3505 for (i
= 0; i
< term
->rows
* (term
->cols
+ 1); i
++)
3506 term
->disptext
[i
] = ATTR_INVALID
;
3510 * Paint the window in response to a WM_PAINT message.
3512 void term_paint(Terminal
*term
, Context ctx
,
3513 int left
, int top
, int right
, int bottom
, int immediately
)
3516 if (left
< 0) left
= 0;
3517 if (top
< 0) top
= 0;
3518 if (right
>= term
->cols
) right
= term
->cols
-1;
3519 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
3521 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
3522 if ((term
->disptext
[i
* (term
->cols
+ 1) + term
->cols
] &
3523 LATTR_MODE
) == LATTR_NORM
)
3524 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
3525 term
->disptext
[i
* (term
->cols
+ 1) + j
] = ATTR_INVALID
;
3527 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
3528 term
->disptext
[i
* (term
->cols
+ 1) + j
] = ATTR_INVALID
;
3531 /* This should happen soon enough, also for some reason it sometimes
3532 * fails to actually do anything when re-sizing ... painting the wrong
3536 do_paint (term
, ctx
, FALSE
);
3540 * Attempt to scroll the scrollback. The second parameter gives the
3541 * position we want to scroll to; the first is +1 to denote that
3542 * this position is relative to the beginning of the scrollback, -1
3543 * to denote it is relative to the end, and 0 to denote that it is
3544 * relative to the current position.
3546 void term_scroll(Terminal
*term
, int rel
, int where
)
3548 int sbtop
= -sblines(term
);
3549 #ifdef OPTIMISE_SCROLL
3550 int olddisptop
= term
->disptop
;
3552 #endif /* OPTIMISE_SCROLL */
3554 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
3555 if (term
->disptop
< sbtop
)
3556 term
->disptop
= sbtop
;
3557 if (term
->disptop
> 0)
3560 #ifdef OPTIMISE_SCROLL
3561 shift
= (term
->disptop
- olddisptop
);
3562 if (shift
< term
->rows
&& shift
> -term
->rows
)
3563 scroll_display(term
, 0, term
->rows
- 1, shift
);
3564 #endif /* OPTIMISE_SCROLL */
3568 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
3571 wchar_t *wbptr
; /* where next char goes within workbuf */
3573 int wblen
= 0; /* workbuf len */
3574 int buflen
; /* amount of memory allocated to workbuf */
3576 buflen
= 5120; /* Default size */
3577 workbuf
= snewn(buflen
, wchar_t);
3578 wbptr
= workbuf
; /* start filling here */
3579 old_top_x
= top
.x
; /* needed for rect==1 */
3581 while (poslt(top
, bottom
)) {
3583 unsigned long *ldata
= lineptr(top
.y
);
3587 * nlpos will point at the maximum position on this line we
3588 * should copy up to. So we start it at the end of the
3592 nlpos
.x
= term
->cols
;
3595 * ... move it backwards if there's unused space at the end
3596 * of the line (and also set `nl' if this is the case,
3597 * because in normal selection mode this means we need a
3598 * newline at the end)...
3600 if (!(ldata
[term
->cols
] & LATTR_WRAPPED
)) {
3601 while (((ldata
[nlpos
.x
- 1] & 0xFF) == 0x20 ||
3602 (DIRECT_CHAR(ldata
[nlpos
.x
- 1]) &&
3603 (ldata
[nlpos
.x
- 1] & CHAR_MASK
) == 0x20))
3604 && poslt(top
, nlpos
))
3606 if (poslt(nlpos
, bottom
))
3608 } else if (ldata
[term
->cols
] & LATTR_WRAPPED2
) {
3609 /* Ignore the last char on the line in a WRAPPED2 line. */
3614 * ... and then clip it to the terminal x coordinate if
3615 * we're doing rectangular selection. (In this case we
3616 * still did the above, so that copying e.g. the right-hand
3617 * column from a table doesn't fill with spaces on the
3621 if (nlpos
.x
> bottom
.x
)
3623 nl
= (top
.y
< bottom
.y
);
3626 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
3629 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
3631 wchar_t cbuf
[16], *p
;
3632 int uc
= (ldata
[top
.x
] & 0xFFFF);
3635 if (uc
== UCSWIDE
) {
3640 switch (uc
& CSET_MASK
) {
3642 if (!term
->cfg
.rawcnp
) {
3643 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
3647 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
3650 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
3653 switch (uc
& CSET_MASK
) {
3655 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
3658 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
3662 set
= (uc
& CSET_MASK
);
3663 c
= (uc
& CHAR_MASK
);
3667 if (DIRECT_FONT(uc
)) {
3668 if (c
>= ' ' && c
!= 0x7F) {
3672 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
3674 buf
[1] = (char) (0xFF & ldata
[top
.x
+ 1]);
3675 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
3679 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
3683 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
3690 for (p
= cbuf
; *p
; p
++) {
3691 /* Enough overhead for trailing NL and nul */
3692 if (wblen
>= buflen
- 16) {
3694 workbuf
= sresize(workbuf
, buflen
, wchar_t);
3695 wbptr
= workbuf
+ wblen
;
3704 for (i
= 0; i
< sel_nl_sz
; i
++) {
3706 *wbptr
++ = sel_nl
[i
];
3710 top
.x
= rect ? old_top_x
: 0;
3712 #if SELECTION_NUL_TERMINATED
3716 write_clip(term
->frontend
, workbuf
, wblen
, desel
); /* transfer to clipbd */
3717 if (buflen
> 0) /* indicates we allocated this buffer */
3721 void term_copyall(Terminal
*term
)
3724 top
.y
= -sblines(term
);
3726 clipme(term
, top
, term
->curs
, 0, TRUE
);
3730 * The wordness array is mainly for deciding the disposition of the
3731 * US-ASCII characters.
3733 static int wordtype(Terminal
*term
, int uc
)
3736 int start
, end
, ctype
;
3738 static const struct ucsword ucs_words
[] = {
3744 0x037e, 0x037e, 1}, /* Greek question mark */
3746 0x0387, 0x0387, 1}, /* Greek ano teleia */
3748 0x055a, 0x055f, 1}, /* Armenian punctuation */
3750 0x0589, 0x0589, 1}, /* Armenian full stop */
3752 0x0700, 0x070d, 1}, /* Syriac punctuation */
3754 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3756 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3758 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3760 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3762 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3764 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3766 0x2000, 0x200a, 0}, /* Various spaces */
3768 0x2070, 0x207f, 2}, /* superscript */
3770 0x2080, 0x208f, 2}, /* subscript */
3772 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3774 0x3000, 0x3000, 0}, /* ideographic space */
3776 0x3001, 0x3020, 1}, /* ideographic punctuation */
3778 0x303f, 0x309f, 3}, /* Hiragana */
3780 0x30a0, 0x30ff, 3}, /* Katakana */
3782 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3784 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3786 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3788 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3790 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3792 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3794 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3796 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3798 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3802 const struct ucsword
*wptr
;
3804 uc
&= (CSET_MASK
| CHAR_MASK
);
3806 switch (uc
& CSET_MASK
) {
3808 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
3811 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
3814 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
3817 switch (uc
& CSET_MASK
) {
3819 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
3822 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
3826 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3827 * fail as there's such a thing as a double width space. :-(
3829 if (term
->ucsdata
->dbcs_screenfont
&&
3830 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
3834 return term
->wordness
[uc
];
3836 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
3837 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
3845 * Spread the selection outwards according to the selection mode.
3847 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
3849 unsigned long *ldata
;
3851 int topy
= -sblines(term
);
3853 ldata
= lineptr(p
.y
);
3855 switch (term
->selmode
) {
3858 * In this mode, every character is a separate unit, except
3859 * for runs of spaces at the end of a non-wrapping line.
3861 if (!(ldata
[term
->cols
] & LATTR_WRAPPED
)) {
3862 unsigned long *q
= ldata
+ term
->cols
;
3863 while (q
> ldata
&& (q
[-1] & CHAR_MASK
) == 0x20)
3865 if (q
== ldata
+ term
->cols
)
3867 if (p
.x
>= q
- ldata
)
3868 p
.x
= (dir
== -1 ? q
- ldata
: term
->cols
- 1);
3873 * In this mode, the units are maximal runs of characters
3874 * whose `wordness' has the same value.
3876 wvalue
= wordtype(term
, UCSGET(ldata
, p
.x
));
3879 int maxcols
= (ldata
[term
->cols
] & LATTR_WRAPPED2 ?
3880 term
->cols
-1 : term
->cols
);
3881 if (p
.x
< maxcols
-1) {
3882 if (wordtype(term
, UCSGET(ldata
, p
.x
+ 1)) == wvalue
)
3887 if (ldata
[term
->cols
] & LATTR_WRAPPED
) {
3888 unsigned long *ldata2
;
3889 ldata2
= lineptr(p
.y
+1);
3890 if (wordtype(term
, UCSGET(ldata2
, 0)) == wvalue
) {
3903 if (wordtype(term
, UCSGET(ldata
, p
.x
- 1)) == wvalue
)
3908 unsigned long *ldata2
;
3912 ldata2
= lineptr(p
.y
-1);
3913 maxcols
= (ldata2
[term
->cols
] & LATTR_WRAPPED2 ?
3914 term
->cols
-1 : term
->cols
);
3915 if (ldata2
[term
->cols
] & LATTR_WRAPPED
) {
3916 if (wordtype(term
, UCSGET(ldata2
, maxcols
-1))
3931 * In this mode, every line is a unit.
3933 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
3939 static void sel_spread(Terminal
*term
)
3941 if (term
->seltype
== LEXICOGRAPHIC
) {
3942 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
3943 decpos(term
->selend
);
3944 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
3945 incpos(term
->selend
);
3949 void term_do_paste(Terminal
*term
)
3954 get_clip(term
->frontend
, &data
, &len
);
3955 if (data
&& len
> 0) {
3958 term_seen_key_event(term
); /* pasted data counts */
3960 if (term
->paste_buffer
)
3961 sfree(term
->paste_buffer
);
3962 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
3963 term
->paste_buffer
= snewn(len
, wchar_t);
3966 while (p
< data
+ len
) {
3967 while (p
< data
+ len
&&
3968 !(p
<= data
+ len
- sel_nl_sz
&&
3969 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
3974 for (i
= 0; i
< p
- q
; i
++) {
3975 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
3979 if (p
<= data
+ len
- sel_nl_sz
&&
3980 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
3981 term
->paste_buffer
[term
->paste_len
++] = '\015';
3987 /* Assume a small paste will be OK in one go. */
3988 if (term
->paste_len
< 256) {
3990 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
3991 if (term
->paste_buffer
)
3992 sfree(term
->paste_buffer
);
3993 term
->paste_buffer
= 0;
3994 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
3997 get_clip(term
->frontend
, NULL
, NULL
);
4000 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
4001 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
4004 unsigned long *ldata
;
4005 int raw_mouse
= (term
->xterm_mouse
&&
4006 !term
->cfg
.no_mouse_rep
&&
4007 !(term
->cfg
.mouse_override
&& shift
));
4008 int default_seltype
;
4012 if (a
== MA_DRAG
&& !raw_mouse
)
4013 term_scroll(term
, 0, -1);
4015 if (y
>= term
->rows
) {
4017 if (a
== MA_DRAG
&& !raw_mouse
)
4018 term_scroll(term
, 0, +1);
4027 if (x
>= term
->cols
)
4030 selpoint
.y
= y
+ term
->disptop
;
4032 ldata
= lineptr(selpoint
.y
);
4033 if ((ldata
[term
->cols
] & LATTR_MODE
) != LATTR_NORM
)
4037 int encstate
= 0, r
, c
;
4044 encstate
= 0x20; /* left button down */
4055 case MBT_WHEEL_DOWN
:
4058 default: break; /* placate gcc warning about enum use */
4062 if (term
->xterm_mouse
== 1)
4068 term
->mouse_is_down
= 0;
4071 if (term
->mouse_is_down
== braw
)
4073 term
->mouse_is_down
= braw
;
4075 default: break; /* placate gcc warning about enum use */
4084 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
4085 ldisc_send(term
->ldisc
, abuf
, 6, 0);
4091 * Set the selection type (rectangular or normal) at the start
4092 * of a selection attempt, from the state of Alt.
4094 if (!alt
^ !term
->cfg
.rect_select
)
4095 default_seltype
= RECTANGULAR
;
4097 default_seltype
= LEXICOGRAPHIC
;
4099 if (term
->selstate
== NO_SELECTION
) {
4100 term
->seltype
= default_seltype
;
4103 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
4105 term
->selstate
= ABOUT_TO
;
4106 term
->seltype
= default_seltype
;
4107 term
->selanchor
= selpoint
;
4108 term
->selmode
= SM_CHAR
;
4109 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
4111 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
4112 term
->selstate
= DRAGGING
;
4113 term
->selstart
= term
->selanchor
= selpoint
;
4114 term
->selend
= term
->selstart
;
4115 incpos(term
->selend
);
4117 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
4118 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
4119 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
4121 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
4122 term
->selstate
== SELECTED
) {
4123 if (term
->seltype
== LEXICOGRAPHIC
) {
4125 * For normal selection, we extend by moving
4126 * whichever end of the current selection is closer
4129 if (posdiff(selpoint
, term
->selstart
) <
4130 posdiff(term
->selend
, term
->selstart
) / 2) {
4131 term
->selanchor
= term
->selend
;
4132 decpos(term
->selanchor
);
4134 term
->selanchor
= term
->selstart
;
4138 * For rectangular selection, we have a choice of
4139 * _four_ places to put selanchor and selpoint: the
4140 * four corners of the selection.
4142 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
4143 term
->selanchor
.x
= term
->selend
.x
-1;
4145 term
->selanchor
.x
= term
->selstart
.x
;
4147 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
4148 term
->selanchor
.y
= term
->selend
.y
;
4150 term
->selanchor
.y
= term
->selstart
.y
;
4152 term
->selstate
= DRAGGING
;
4154 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
4155 term
->selanchor
= selpoint
;
4156 term
->selstate
= DRAGGING
;
4157 if (term
->seltype
== LEXICOGRAPHIC
) {
4159 * For normal selection, we set (selstart,selend) to
4160 * (selpoint,selanchor) in some order.
4162 if (poslt(selpoint
, term
->selanchor
)) {
4163 term
->selstart
= selpoint
;
4164 term
->selend
= term
->selanchor
;
4165 incpos(term
->selend
);
4167 term
->selstart
= term
->selanchor
;
4168 term
->selend
= selpoint
;
4169 incpos(term
->selend
);
4173 * For rectangular selection, we may need to
4174 * interchange x and y coordinates (if the user has
4175 * dragged in the -x and +y directions, or vice versa).
4177 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
4178 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
4179 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
4180 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
4183 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
4185 if (term
->selstate
== DRAGGING
) {
4187 * We've completed a selection. We now transfer the
4188 * data to the clipboard.
4190 clipme(term
, term
->selstart
, term
->selend
,
4191 (term
->seltype
== RECTANGULAR
), FALSE
);
4192 term
->selstate
= SELECTED
;
4194 term
->selstate
= NO_SELECTION
;
4195 } else if (bcooked
== MBT_PASTE
4197 #if MULTICLICK_ONLY_EVENT
4198 || a
== MA_2CLK
|| a
== MA_3CLK
4201 request_paste(term
->frontend
);
4207 void term_key(Terminal
*term
, Key_Sym keysym
, wchar_t *text
, size_t tlen
,
4208 unsigned int modifiers
, unsigned int flags
)
4212 int prependesc
= FALSE
;
4216 fprintf(stderr
, "keysym = %d, %d chars:", keysym
, tlen
);
4217 for (i
= 0; i
< tlen
; i
++)
4218 fprintf(stderr
, " %04x", (unsigned)text
[i
]);
4219 fprintf(stderr
, "\n");
4223 if ((flags
& PKF_REPEAT
) && term
->repeat_off
)
4226 /* Currently, Meta always just prefixes everything with ESC. */
4227 if (modifiers
& PKM_META
)
4229 modifiers
&= ~PKM_META
;
4232 * Alt is only used for Alt+keypad, which isn't supported yet, so
4235 modifiers
&= ~PKM_ALT
;
4237 /* Standard local function keys */
4238 switch (modifiers
& (PKM_SHIFT
| PKM_CONTROL
)) {
4240 if (keysym
== PK_PAGEUP
)
4241 /* scroll up one page */;
4242 if (keysym
== PK_PAGEDOWN
)
4243 /* scroll down on page */;
4244 if (keysym
== PK_INSERT
)
4245 term_do_paste(term
);
4248 if (keysym
== PK_PAGEUP
)
4249 /* scroll up one line */;
4250 if (keysym
== PK_PAGEDOWN
)
4251 /* scroll down one line */;
4252 /* Control-Numlock for app-keypad mode switch */
4253 if (keysym
== PK_PF1
)
4254 term
->app_keypad_keys
^= 1;
4258 if (modifiers
& PKM_ALT
) {
4259 /* Alt+F4 (close) */
4260 /* Alt+Return (full screen) */
4261 /* Alt+Space (system menu) */
4264 if (keysym
== PK_NULL
&& (modifiers
& PKM_CONTROL
) && tlen
== 1 &&
4265 text
[0] >= 0x20 && text
[0] <= 0x7e) {
4266 /* ASCII chars + Control */
4267 if ((text
[0] >= 0x40 && text
[0] <= 0x5f) ||
4268 (text
[0] >= 0x61 && text
[0] <= 0x7a))
4272 * Control-2 should return ^@ (0x00), Control-6 should return
4273 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
4274 * the DOS keyboard handling did it, and we have nothing better
4275 * to do with the key combo in question, we'll also map
4276 * Control-Backquote to ^\ (0x1C).
4279 case ' ': text
[0] = 0x00; break;
4280 case '-': text
[0] = 0x1f; break;
4281 case '/': text
[0] = 0x1f; break;
4282 case '2': text
[0] = 0x00; break;
4283 case '3': text
[0] = 0x1b; break;
4284 case '4': text
[0] = 0x1c; break;
4285 case '5': text
[0] = 0x1d; break;
4286 case '6': text
[0] = 0x1e; break;
4287 case '7': text
[0] = 0x1f; break;
4288 case '8': text
[0] = 0x7f; break;
4289 case '`': text
[0] = 0x1c; break;
4294 /* Nethack keypad */
4295 if (term
->cfg
.nethack_keypad
) {
4298 case PK_KP1
: c
= 'b'; break;
4299 case PK_KP2
: c
= 'j'; break;
4300 case PK_KP3
: c
= 'n'; break;
4301 case PK_KP4
: c
= 'h'; break;
4302 case PK_KP5
: c
= '.'; break;
4303 case PK_KP6
: c
= 'l'; break;
4304 case PK_KP7
: c
= 'y'; break;
4305 case PK_KP8
: c
= 'k'; break;
4306 case PK_KP9
: c
= 'u'; break;
4307 default: break; /* else gcc warns `enum value not used' */
4311 if (modifiers
& PKM_CONTROL
)
4313 else if (modifiers
& PKM_SHIFT
)
4321 /* Numeric Keypad */
4322 if (PK_ISKEYPAD(keysym
)) {
4326 * In VT400 mode, PFn always emits an escape sequence. In
4327 * Linux and tilde modes, this only happens in app keypad mode.
4329 if (term
->cfg
.funky_type
== FUNKY_VT400
||
4330 ((term
->cfg
.funky_type
== FUNKY_LINUX
||
4331 term
->cfg
.funky_type
== FUNKY_TILDE
) &&
4332 term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
)) {
4334 case PK_PF1
: xkey
= 'P'; break;
4335 case PK_PF2
: xkey
= 'Q'; break;
4336 case PK_PF3
: xkey
= 'R'; break;
4337 case PK_PF4
: xkey
= 'S'; break;
4338 default: break; /* else gcc warns `enum value not used' */
4341 if (term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
) {
4343 case PK_KP0
: xkey
= 'p'; break;
4344 case PK_KP1
: xkey
= 'q'; break;
4345 case PK_KP2
: xkey
= 'r'; break;
4346 case PK_KP3
: xkey
= 's'; break;
4347 case PK_KP4
: xkey
= 't'; break;
4348 case PK_KP5
: xkey
= 'u'; break;
4349 case PK_KP6
: xkey
= 'v'; break;
4350 case PK_KP7
: xkey
= 'w'; break;
4351 case PK_KP8
: xkey
= 'x'; break;
4352 case PK_KP9
: xkey
= 'y'; break;
4353 case PK_KPDECIMAL
: xkey
= 'n'; break;
4354 case PK_KPENTER
: xkey
= 'M'; break;
4355 default: break; /* else gcc warns `enum value not used' */
4357 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& tlen
> 0) {
4359 * xterm can't see the layout of the keypad, so it has
4360 * to rely on the X keysyms returned by the keys.
4361 * Hence, we look at the strings here, not the PuTTY
4362 * keysyms (which describe the layout).
4366 if (modifiers
& PKM_SHIFT
)
4371 case '/': xkey
= 'o'; break;
4372 case '*': xkey
= 'j'; break;
4373 case '-': xkey
= 'm'; break;
4377 * In all other modes, we try to retain the layout of
4378 * the DEC keypad in application mode.
4382 /* This key covers the '-' and ',' keys on a VT220 */
4383 if (modifiers
& PKM_SHIFT
)
4384 xkey
= 'm'; /* VT220 '-' */
4386 xkey
= 'l'; /* VT220 ',' */
4388 case PK_KPMINUS
: xkey
= 'm'; break;
4389 case PK_KPCOMMA
: xkey
= 'l'; break;
4390 default: break; /* else gcc warns `enum value not used' */
4395 if (term
->vt52_mode
) {
4396 if (xkey
>= 'P' && xkey
<= 'S')
4397 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
4399 p
+= sprintf((char *) p
, "\x1B?%c", xkey
);
4401 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
4404 /* Not in application mode -- treat the number pad as arrow keys? */
4405 if ((flags
& PKF_NUMLOCK
) == 0) {
4407 case PK_KP0
: keysym
= PK_INSERT
; break;
4408 case PK_KP1
: keysym
= PK_END
; break;
4409 case PK_KP2
: keysym
= PK_DOWN
; break;
4410 case PK_KP3
: keysym
= PK_PAGEDOWN
; break;
4411 case PK_KP4
: keysym
= PK_LEFT
; break;
4412 case PK_KP5
: keysym
= PK_REST
; break;
4413 case PK_KP6
: keysym
= PK_RIGHT
; break;
4414 case PK_KP7
: keysym
= PK_HOME
; break;
4415 case PK_KP8
: keysym
= PK_UP
; break;
4416 case PK_KP9
: keysym
= PK_PAGEUP
; break;
4417 default: break; /* else gcc warns `enum value not used' */
4422 /* Miscellaneous keys */
4429 *p
++ = (term
->cfg
.bksp_is_delete ?
0x7F : 0x08);
4430 else if (modifiers
== PKM_SHIFT
)
4431 /* We do the opposite of what is configured */
4432 *p
++ = (term
->cfg
.bksp_is_delete ?
0x08 : 0x7F);
4438 else if (modifiers
== PKM_SHIFT
)
4439 *p
++ = 0x1B, *p
++ = '[', *p
++ = 'Z';
4442 /* XXX window.c has ctrl+shift+space sending 0xa0 */
4444 if (modifiers
== PKM_CONTROL
)
4449 case PK_KPENTER
: /* Odd keypad modes handled above */
4450 if (modifiers
== 0) {
4452 if (term
->cr_lf_return
)
4456 default: break; /* else gcc warns `enum value not used' */
4459 /* SCO function keys and editing keys */
4460 if (term
->cfg
.funky_type
== FUNKY_SCO
) {
4461 if (PK_ISFKEY(keysym
) && keysym
<= PK_F12
) {
4462 static char const codes
[] =
4463 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
4464 int index
= keysym
- PK_F1
;
4466 if (modifiers
& PKM_SHIFT
) index
+= 12;
4467 if (modifiers
& PKM_CONTROL
) index
+= 24;
4468 p
+= sprintf((char *) p
, "\x1B[%c", codes
[index
]);
4471 if (PK_ISEDITING(keysym
)) {
4475 case PK_DELETE
: *p
++ = 0x7f; goto done
;
4476 case PK_HOME
: xkey
= 'H'; break;
4477 case PK_INSERT
: xkey
= 'L'; break;
4478 case PK_END
: xkey
= 'F'; break;
4479 case PK_PAGEUP
: xkey
= 'I'; break;
4480 case PK_PAGEDOWN
: xkey
= 'G'; break;
4481 default: break; /* else gcc warns `enum value not used' */
4483 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
4487 if (PK_ISEDITING(keysym
) && (modifiers
& PKM_SHIFT
) == 0) {
4490 if (term
->cfg
.funky_type
== FUNKY_XTERM
) {
4491 /* Xterm shuffles these keys, apparently. */
4493 case PK_HOME
: keysym
= PK_INSERT
; break;
4494 case PK_INSERT
: keysym
= PK_HOME
; break;
4495 case PK_DELETE
: keysym
= PK_END
; break;
4496 case PK_END
: keysym
= PK_PAGEUP
; break;
4497 case PK_PAGEUP
: keysym
= PK_DELETE
; break;
4498 case PK_PAGEDOWN
: keysym
= PK_PAGEDOWN
; break;
4499 default: break; /* else gcc warns `enum value not used' */
4504 if (term
->cfg
.rxvt_homeend
&&
4505 (keysym
== PK_HOME
|| keysym
== PK_END
)) {
4506 p
+= sprintf((char *) p
, keysym
== PK_HOME ?
"\x1B[H" : "\x1BOw");
4510 if (term
->vt52_mode
) {
4514 * A real VT52 doesn't have these, and a VT220 doesn't
4515 * send anything for them in VT52 mode.
4518 case PK_HOME
: xkey
= 'H'; break;
4519 case PK_INSERT
: xkey
= 'L'; break;
4520 case PK_DELETE
: xkey
= 'M'; break;
4521 case PK_END
: xkey
= 'E'; break;
4522 case PK_PAGEUP
: xkey
= 'I'; break;
4523 case PK_PAGEDOWN
: xkey
= 'G'; break;
4524 default: xkey
=0; break; /* else gcc warns `enum value not used'*/
4526 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
4531 case PK_HOME
: code
= 1; break;
4532 case PK_INSERT
: code
= 2; break;
4533 case PK_DELETE
: code
= 3; break;
4534 case PK_END
: code
= 4; break;
4535 case PK_PAGEUP
: code
= 5; break;
4536 case PK_PAGEDOWN
: code
= 6; break;
4537 default: code
= 0; break; /* else gcc warns `enum value not used' */
4539 p
+= sprintf((char *) p
, "\x1B[%d~", code
);
4543 if (PK_ISFKEY(keysym
)) {
4544 /* Map Shift+F1-F10 to F11-F20 */
4545 if (keysym
>= PK_F1
&& keysym
<= PK_F10
&& (modifiers
& PKM_SHIFT
))
4547 if ((term
->vt52_mode
|| term
->cfg
.funky_type
== FUNKY_VT100P
) &&
4549 /* XXX This overrides the XTERM/VT52 mode below */
4551 if (keysym
>= PK_F6
) offt
++;
4552 if (keysym
>= PK_F12
) offt
++;
4553 p
+= sprintf((char *) p
, term
->vt52_mode ?
"\x1B%c" : "\x1BO%c",
4554 'P' + keysym
- PK_F1
- offt
);
4557 if (term
->cfg
.funky_type
== FUNKY_LINUX
&& keysym
<= PK_F5
) {
4558 p
+= sprintf((char *) p
, "\x1B[[%c", 'A' + keysym
- PK_F1
);
4561 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& keysym
<= PK_F4
) {
4562 if (term
->vt52_mode
)
4563 p
+= sprintf((char *) p
, "\x1B%c", 'P' + keysym
- PK_F1
);
4565 p
+= sprintf((char *) p
, "\x1BO%c", 'P' + keysym
- PK_F1
);
4568 p
+= sprintf((char *) p
, "\x1B[%d~", 11 + keysym
- PK_F1
);
4572 if (PK_ISCURSOR(keysym
)) {
4576 case PK_UP
: xkey
= 'A'; break;
4577 case PK_DOWN
: xkey
= 'B'; break;
4578 case PK_RIGHT
: xkey
= 'C'; break;
4579 case PK_LEFT
: xkey
= 'D'; break;
4580 case PK_REST
: xkey
= 'G'; break; /* centre key on number pad */
4581 default: xkey
= 0; break; /* else gcc warns `enum value not used' */
4583 if (term
->vt52_mode
)
4584 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
4586 int app_flg
= (term
->app_cursor_keys
&& !term
->cfg
.no_applic_c
);
4588 /* Useful mapping of Ctrl-arrows */
4589 if (modifiers
== PKM_CONTROL
)
4593 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
4595 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
4601 if (p
> output
|| tlen
> 0) {
4603 * Interrupt an ongoing paste. I'm not sure
4604 * this is sensible, but for the moment it's
4605 * preferable to having to faff about buffering
4611 * We need not bother about stdin backlogs
4612 * here, because in GUI PuTTY we can't do
4613 * anything about it anyway; there's no means
4614 * of asking Windows to hold off on KEYDOWN
4615 * messages. We _have_ to buffer everything
4618 term_seen_key_event(term
);
4622 fprintf(stderr
, "sending ESC\n");
4624 ldisc_send(term
->ldisc
, "\x1b", 1, 1);
4629 fprintf(stderr
, "sending %d bytes:", p
- output
);
4630 for (i
= 0; i
< p
- output
; i
++)
4631 fprintf(stderr
, " %02x", output
[i
]);
4632 fprintf(stderr
, "\n");
4634 ldisc_send(term
->ldisc
, output
, p
- output
, 1);
4635 } else if (tlen
> 0) {
4637 fprintf(stderr
, "sending %d unichars:", tlen
);
4638 for (i
= 0; i
< tlen
; i
++)
4639 fprintf(stderr
, " %04x", (unsigned) text
[i
]);
4640 fprintf(stderr
, "\n");
4642 luni_send(term
->ldisc
, text
, tlen
, 1);
4647 void term_nopaste(Terminal
*term
)
4649 if (term
->paste_len
== 0)
4651 sfree(term
->paste_buffer
);
4652 term
->paste_buffer
= NULL
;
4653 term
->paste_len
= 0;
4656 int term_paste_pending(Terminal
*term
)
4658 return term
->paste_len
!= 0;
4661 void term_paste(Terminal
*term
)
4663 long now
, paste_diff
;
4665 if (term
->paste_len
== 0)
4668 /* Don't wait forever to paste */
4669 if (term
->paste_hold
) {
4670 now
= GETTICKCOUNT();
4671 paste_diff
= now
- term
->last_paste
;
4672 if (paste_diff
>= 0 && paste_diff
< 450)
4675 term
->paste_hold
= 0;
4677 while (term
->paste_pos
< term
->paste_len
) {
4679 while (n
+ term
->paste_pos
< term
->paste_len
) {
4680 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
4684 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
4685 term
->paste_pos
+= n
;
4687 if (term
->paste_pos
< term
->paste_len
) {
4688 term
->paste_hold
= 1;
4692 sfree(term
->paste_buffer
);
4693 term
->paste_buffer
= NULL
;
4694 term
->paste_len
= 0;
4697 static void deselect(Terminal
*term
)
4699 term
->selstate
= NO_SELECTION
;
4700 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
4703 void term_deselect(Terminal
*term
)
4709 int term_ldisc(Terminal
*term
, int option
)
4711 if (option
== LD_ECHO
)
4712 return term
->term_echoing
;
4713 if (option
== LD_EDIT
)
4714 return term
->term_editing
;
4718 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
4722 bufchain_add(&term
->inbuf
, data
, len
);
4724 if (!term
->in_term_out
) {
4725 term
->in_term_out
= TRUE
;
4726 term_blink(term
, 1);
4728 term
->in_term_out
= FALSE
;
4732 * term_out() always completely empties inbuf. Therefore,
4733 * there's no reason at all to return anything other than zero
4734 * from this function, because there _can't_ be a question of
4735 * the remote side needing to wait until term_out() has cleared
4738 * This is a slightly suboptimal way to deal with SSH2 - in
4739 * principle, the window mechanism would allow us to continue
4740 * to accept data on forwarded ports and X connections even
4741 * while the terminal processing was going slowly - but we
4742 * can't do the 100% right thing without moving the terminal
4743 * processing into a separate thread, and that might hurt
4744 * portability. So we manage stdout buffering the old SSH1 way:
4745 * if the terminal processing goes slowly, the whole SSH
4746 * connection stops accepting data until it's ready.
4748 * In practice, I can't imagine this causing serious trouble.
4753 void term_provide_logctx(Terminal
*term
, void *logctx
)
4755 term
->logctx
= logctx
;