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 const char sco2ansicolour
[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
61 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
62 const wchar_t sel_nl
[] = SEL_NL
;
65 * Fetch the character at a particular position in a line array,
66 * for purposes of `wordtype'. The reason this isn't just a simple
67 * array reference is that if the character we find is UCSWIDE,
68 * then we must look one space further to the left.
70 #define UCSGET(a, x) \
71 ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr )
74 * Detect the various aliases of U+0020 SPACE.
76 #define IS_SPACE_CHR(chr) \
77 ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20))
82 #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0)
85 * Internal prototypes.
87 static void resizeline(Terminal
*, termline
*, int);
88 static termline
*lineptr(Terminal
*, int, int, int);
89 static void unlineptr(termline
*);
90 static void do_paint(Terminal
*, Context
, int);
91 static void erase_lots(Terminal
*, int, int, int);
92 static void swap_screen(Terminal
*, int, int, int);
93 static void update_sbar(Terminal
*);
94 static void deselect(Terminal
*);
95 static void term_print_finish(Terminal
*);
96 #ifdef OPTIMISE_SCROLL
97 static void scroll_display(Terminal
*, int, int, int);
98 #endif /* OPTIMISE_SCROLL */
100 static termline
*newline(Terminal
*term
, int cols
, int bce
)
105 line
= snew(termline
);
106 line
->chars
= snewn(cols
, termchar
);
107 for (j
= 0; j
< cols
; j
++)
108 line
->chars
[j
] = (bce ? term
->erase_char
: term
->basic_erase_char
);
110 line
->lattr
= LATTR_NORM
;
111 line
->temporary
= FALSE
;
116 static void freeline(termline
*line
)
124 static void unlineptr(termline
*line
)
131 * Compress and decompress a termline into an RLE-based format for
132 * storing in scrollback. (Since scrollback almost never needs to
133 * be modified and exists in huge quantities, this is a sensible
134 * tradeoff, particularly since it allows us to continue adding
135 * features to the main termchar structure without proportionally
136 * bloating the terminal emulator's memory footprint unless those
137 * features are in constant use.)
143 static void add(struct buf
*b
, unsigned char c
)
145 if (b
->len
>= b
->size
) {
146 b
->size
= (b
->len
* 3 / 2) + 512;
147 b
->data
= sresize(b
->data
, b
->size
, unsigned char);
149 b
->data
[b
->len
++] = c
;
151 static int get(struct buf
*b
)
153 return b
->data
[b
->len
++];
155 static void makerle(struct buf
*b
, termline
*ldata
,
156 void (*makeliteral
)(struct buf
*b
, termchar
*c
,
157 unsigned long *state
))
159 int hdrpos
, hdrsize
, n
, prevlen
, prevpos
, thislen
, thispos
, prev2
;
160 termchar
*c
= ldata
->chars
;
161 unsigned long state
= 0, oldstate
;
168 prevlen
= prevpos
= 0;
173 makeliteral(b
, c
++, &state
);
174 thislen
= b
->len
- thispos
;
175 if (thislen
== prevlen
&&
176 !memcmp(b
->data
+ prevpos
, b
->data
+ thispos
, thislen
)) {
178 * This literal precisely matches the previous one.
179 * Turn it into a run if it's worthwhile.
181 * With one-byte literals, it costs us two bytes to
182 * encode a run, plus another byte to write the header
183 * to resume normal output; so a three-element run is
184 * neutral, and anything beyond that is unconditionally
185 * worthwhile. With two-byte literals or more, even a
188 if (thislen
> 1 || prev2
) {
192 * It's worth encoding a run. Start at prevpos,
193 * unless hdrsize==0 in which case we can back up
194 * another one and start by overwriting hdrpos.
197 hdrsize
--; /* remove the literal at prevpos */
201 prevpos
-= prevlen
;/* and possibly another one */
205 assert(prevpos
== hdrpos
+ 1);
207 b
->len
= prevpos
+prevlen
;
209 memmove(b
->data
+ prevpos
+1, b
->data
+ prevpos
, prevlen
);
211 b
->len
= prevpos
+prevlen
+1;
213 * Terminate the previous run of ordinary
216 assert(hdrsize
>= 1 && hdrsize
<= 128);
217 b
->data
[hdrpos
] = hdrsize
- 1;
220 runlen
= prev2 ?
3 : 2;
222 while (n
> 0 && runlen
< 129) {
226 makeliteral(b
, c
, &state
);
227 tmplen
= b
->len
- tmppos
;
229 if (tmplen
!= thislen
||
230 memcmp(b
->data
+ runpos
+1, b
->data
+ tmppos
, tmplen
)) {
232 break; /* run over */
237 assert(runlen
>= 2 && runlen
<= 129);
238 b
->data
[runpos
] = runlen
+ 0x80 - 2;
247 * Just flag that the previous two literals were
248 * identical, in case we find a third identical one
249 * we want to turn into a run.
262 * This character isn't (yet) part of a run. Add it to
266 if (hdrsize
== 128) {
267 b
->data
[hdrpos
] = hdrsize
- 1;
271 prevlen
= prevpos
= 0;
280 assert(hdrsize
<= 128);
281 b
->data
[hdrpos
] = hdrsize
- 1;
286 static void makeliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
289 * My encoding for characters is UTF-8-like, in that it stores
290 * 7-bit ASCII in one byte and uses high-bit-set bytes as
291 * introducers to indicate a longer sequence. However, it's
292 * unlike UTF-8 in that it doesn't need to be able to
293 * resynchronise, and therefore I don't want to waste two bits
294 * per byte on having recognisable continuation characters.
295 * Also I don't want to rule out the possibility that I may one
296 * day use values 0x80000000-0xFFFFFFFF for interesting
297 * purposes, so unlike UTF-8 I need a full 32-bit range.
298 * Accordingly, here is my encoding:
300 * 00000000-0000007F: 0xxxxxxx (but see below)
301 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
302 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
303 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
304 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
306 * (`Z' is like `x' but is always going to be zero since the
307 * values I'm encoding don't go above 2^32. In principle the
308 * five-byte form of the encoding could extend to 2^35, and
309 * there could be six-, seven-, eight- and nine-byte forms as
310 * well to allow up to 64-bit values to be encoded. But that's
311 * completely unnecessary for these purposes!)
313 * The encoding as written above would be very simple, except
314 * that 7-bit ASCII can occur in several different ways in the
315 * terminal data; sometimes it crops up in the D800 page
316 * (CSET_ASCII) but at other times it's in the 0000 page (real
317 * Unicode). Therefore, this encoding is actually _stateful_:
318 * the one-byte encoding of 00-7F actually indicates `reuse the
319 * upper three bytes of the last character', and to encode an
320 * absolute value of 00-7F you need to use the two-byte form
323 if ((c
->chr
& ~0x7F) == *state
) {
324 add(b
, (unsigned char)(c
->chr
& 0x7F));
325 } else if (c
->chr
< 0x4000) {
326 add(b
, (unsigned char)(((c
->chr
>> 8) & 0x3F) | 0x80));
327 add(b
, (unsigned char)(c
->chr
& 0xFF));
328 } else if (c
->chr
< 0x200000) {
329 add(b
, (unsigned char)(((c
->chr
>> 16) & 0x1F) | 0xC0));
330 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
331 add(b
, (unsigned char)(c
->chr
& 0xFF));
332 } else if (c
->chr
< 0x10000000) {
333 add(b
, (unsigned char)(((c
->chr
>> 24) & 0x0F) | 0xE0));
334 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
335 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
336 add(b
, (unsigned char)(c
->chr
& 0xFF));
339 add(b
, (unsigned char)((c
->chr
>> 24) & 0xFF));
340 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
341 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
342 add(b
, (unsigned char)(c
->chr
& 0xFF));
344 *state
= c
->chr
& ~0xFF;
346 static void makeliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
349 * My encoding for attributes is 16-bit-granular and assumes
350 * that the top bit of the word is never required. I either
351 * store a two-byte value with the top bit clear (indicating
352 * just that value), or a four-byte value with the top bit set
353 * (indicating the same value with its top bit clear).
355 if (c
->attr
< 0x8000) {
356 add(b
, (unsigned char)((c
->attr
>> 8) & 0xFF));
357 add(b
, (unsigned char)(c
->attr
& 0xFF));
359 add(b
, (unsigned char)(((c
->attr
>> 24) & 0x7F) | 0x80));
360 add(b
, (unsigned char)((c
->attr
>> 16) & 0xFF));
361 add(b
, (unsigned char)((c
->attr
>> 8) & 0xFF));
362 add(b
, (unsigned char)(c
->attr
& 0xFF));
366 static termline
*decompressline(unsigned char *data
, int *bytes_used
);
368 static unsigned char *compressline(termline
*ldata
)
370 struct buf buffer
= { NULL
, 0, 0 }, *b
= &buffer
;
373 * First, store the column count, 7 bits at a time, least
374 * significant `digit' first, with the high bit set on all but
380 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
383 add(b
, (unsigned char)(n
));
387 * Next store the lattrs; same principle.
390 int n
= ldata
->lattr
;
392 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
395 add(b
, (unsigned char)(n
));
399 * Now we store a sequence of separate run-length encoded
400 * fragments, each containing exactly as many symbols as there
401 * are columns in the ldata.
403 * All of these have a common basic format:
405 * - a byte 00-7F indicates that X+1 literals follow it
406 * - a byte 80-FF indicates that a single literal follows it
407 * and expects to be repeated (X-0x80)+2 times.
409 * The format of the `literals' varies between the fragments.
411 makerle(b
, ldata
, makeliteral_chr
);
412 makerle(b
, ldata
, makeliteral_attr
);
415 * Diagnostics: ensure that the compressed data really does
416 * decompress to the right thing.
418 #ifndef CHECK_SB_COMPRESSION
423 #ifdef DIAGNOSTIC_SB_COMPRESSION
425 for (i
= 0; i
< b
->len
; i
++) {
426 printf(" %02x ", b
->data
[i
]);
431 dcl
= decompressline(b
->data
, &dused
);
432 assert(b
->len
== dused
);
433 assert(ldata
->cols
== dcl
->cols
);
434 assert(ldata
->lattr
== dcl
->lattr
);
435 assert(!memcmp(ldata
->chars
, dcl
->chars
, ldata
->cols
* TSIZE
));
437 #ifdef DIAGNOSTIC_SB_COMPRESSION
438 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
439 ldata
->cols
, 4 * ldata
->cols
, dused
,
440 (double)dused
/ (4 * ldata
->cols
));
448 * Trim the allocated memory so we don't waste any, and return.
450 return sresize(b
->data
, b
->len
, unsigned char);
453 static void readrle(struct buf
*b
, termline
*ldata
,
454 void (*readliteral
)(struct buf
*b
, termchar
*c
,
455 unsigned long *state
))
458 unsigned long state
= 0;
460 while (n
< ldata
->cols
) {
466 int pos
= b
->len
, count
= hdr
+ 2 - 0x80;
468 assert(n
< ldata
->cols
);
470 readliteral(b
, ldata
->chars
+ n
, &state
);
474 /* Just a sequence of consecutive literals. */
478 assert(n
< ldata
->cols
);
479 readliteral(b
, ldata
->chars
+ n
, &state
);
485 assert(n
== ldata
->cols
);
487 static void readliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
492 * 00000000-0000007F: 0xxxxxxx
493 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
494 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
495 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
496 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
501 c
->chr
= byte
| *state
;
502 } else if (byte
< 0xC0) {
503 c
->chr
= (byte
&~ 0xC0) << 8;
505 } else if (byte
< 0xE0) {
506 c
->chr
= (byte
&~ 0xE0) << 16;
507 c
->chr
|= get(b
) << 8;
509 } else if (byte
< 0xF0) {
510 c
->chr
= (byte
&~ 0xF0) << 24;
511 c
->chr
|= get(b
) << 16;
512 c
->chr
|= get(b
) << 8;
515 assert(byte
== 0xF0);
516 c
->chr
= get(b
) << 24;
517 c
->chr
|= get(b
) << 16;
518 c
->chr
|= get(b
) << 8;
521 *state
= c
->chr
& ~0xFF;
523 static void readliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
539 static termline
*decompressline(unsigned char *data
, int *bytes_used
)
541 int ncols
, byte
, shift
;
542 struct buf buffer
, *b
= &buffer
;
549 * First read in the column count.
554 ncols
|= (byte
& 0x7F) << shift
;
556 } while (byte
& 0x80);
559 * Now create the output termline.
561 ldata
= snew(termline
);
562 ldata
->chars
= snewn(ncols
, termchar
);
564 ldata
->temporary
= TRUE
;
567 * Now read in the lattr.
569 ldata
->lattr
= shift
= 0;
572 ldata
->lattr
|= (byte
& 0x7F) << shift
;
574 } while (byte
& 0x80);
577 * Now we read in each of the RLE streams in turn.
579 readrle(b
, ldata
, readliteral_chr
);
580 readrle(b
, ldata
, readliteral_attr
);
582 /* Return the number of bytes read, for diagnostic purposes. */
584 *bytes_used
= b
->len
;
590 * Resize a line to make it `cols' columns wide.
592 static void resizeline(Terminal
*term
, termline
*line
, int cols
)
596 if (line
->cols
!= cols
) {
598 * This line is the wrong length, which probably means it
599 * hasn't been accessed since a resize. Resize it now.
602 line
->chars
= sresize(line
->chars
, cols
, TTYPE
);
604 for (i
= oldlen
; i
< cols
; i
++)
605 line
->chars
[i
] = term
->basic_erase_char
;
610 * Get the number of lines in the scrollback.
612 static int sblines(Terminal
*term
)
614 int sblines
= count234(term
->scrollback
);
615 if (term
->cfg
.erase_to_scrollback
&&
616 term
->alt_which
&& term
->alt_screen
) {
617 sblines
+= term
->alt_sblines
;
623 * Retrieve a line of the screen or of the scrollback, according to
624 * whether the y coordinate is non-negative or negative
627 static termline
*lineptr(Terminal
*term
, int y
, int lineno
, int screen
)
634 whichtree
= term
->screen
;
641 if (term
->cfg
.erase_to_scrollback
&&
642 term
->alt_which
&& term
->alt_screen
) {
643 altlines
= term
->alt_sblines
;
646 whichtree
= term
->scrollback
;
647 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
649 whichtree
= term
->alt_screen
;
650 treeindex
= y
+ term
->alt_sblines
;
651 /* treeindex = y + count234(term->alt_screen); */
654 if (whichtree
== term
->scrollback
) {
655 unsigned char *cline
= index234(whichtree
, treeindex
);
656 line
= decompressline(cline
, NULL
);
658 line
= index234(whichtree
, treeindex
);
661 /* We assume that we don't screw up and retrieve something out of range. */
662 assert(line
!= NULL
);
664 resizeline(term
, line
, term
->cols
);
665 /* FIXME: should we sort the compressed scrollback out here? */
670 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
671 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
674 * Set up power-on settings for the terminal.
676 static void power_on(Terminal
*term
)
678 term
->curs
.x
= term
->curs
.y
= 0;
679 term
->alt_x
= term
->alt_y
= 0;
680 term
->savecurs
.x
= term
->savecurs
.y
= 0;
681 term
->alt_t
= term
->marg_t
= 0;
682 if (term
->rows
!= -1)
683 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
685 term
->alt_b
= term
->marg_b
= 0;
686 if (term
->cols
!= -1) {
688 for (i
= 0; i
< term
->cols
; i
++)
689 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
691 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
692 term
->alt_ins
= term
->insert
= FALSE
;
693 term
->alt_wnext
= term
->wrapnext
= term
->save_wnext
= FALSE
;
694 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
695 term
->alt_cset
= term
->cset
= term
->save_cset
= 0;
696 term
->alt_utf
= term
->utf
= term
->save_utf
= 0;
698 term
->alt_sco_acs
= term
->sco_acs
= term
->save_sco_acs
= 0;
699 term
->cset_attr
[0] = term
->cset_attr
[1] = term
->save_csattr
= CSET_ASCII
;
701 term
->in_vbell
= FALSE
;
703 term
->big_cursor
= 0;
704 term
->default_attr
= term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
705 term
->term_editing
= term
->term_echoing
= FALSE
;
706 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
707 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
708 term
->use_bce
= term
->cfg
.bce
;
709 term
->blink_is_real
= term
->cfg
.blinktext
;
710 term
->erase_char
= term
->basic_erase_char
;
712 term_print_finish(term
);
715 for (i
= 0; i
< 256; i
++)
716 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
719 swap_screen(term
, 1, FALSE
, FALSE
);
720 erase_lots(term
, FALSE
, TRUE
, TRUE
);
721 swap_screen(term
, 0, FALSE
, FALSE
);
722 erase_lots(term
, FALSE
, TRUE
, TRUE
);
727 * Force a screen update.
729 void term_update(Terminal
*term
)
732 ctx
= get_ctx(term
->frontend
);
734 int need_sbar_update
= term
->seen_disp_event
;
735 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
736 term
->disptop
= 0; /* return to main screen */
737 term
->seen_disp_event
= 0;
738 need_sbar_update
= TRUE
;
741 /* Allocate temporary buffers for Arabic shaping and bidi. */
742 if (!term
->cfg
.arabicshaping
|| !term
->cfg
.bidi
)
744 term
->wcFrom
= sresize(term
->wcFrom
, term
->cols
, bidi_char
);
745 term
->ltemp
= sresize(term
->ltemp
, term
->cols
+1, termchar
);
746 term
->wcTo
= sresize(term
->wcTo
, term
->cols
, bidi_char
);
749 if (need_sbar_update
)
751 do_paint(term
, ctx
, TRUE
);
752 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
758 * Called from front end when a keypress occurs, to trigger
759 * anything magical that needs to happen in that situation.
761 void term_seen_key_event(Terminal
*term
)
764 * On any keypress, clear the bell overload mechanism
765 * completely, on the grounds that large numbers of
766 * beeps coming from deliberate key action are likely
767 * to be intended (e.g. beeps from filename completion
768 * blocking repeatedly).
770 term
->beep_overloaded
= FALSE
;
771 while (term
->beephead
) {
772 struct beeptime
*tmp
= term
->beephead
;
773 term
->beephead
= tmp
->next
;
776 term
->beeptail
= NULL
;
780 * Reset the scrollback on keypress, if we're doing that.
782 if (term
->cfg
.scroll_on_key
) {
783 term
->disptop
= 0; /* return to main screen */
784 term
->seen_disp_event
= 1;
789 * Same as power_on(), but an external function.
791 void term_pwron(Terminal
*term
)
794 if (term
->ldisc
) /* cause ldisc to notice changes */
795 ldisc_send(term
->ldisc
, NULL
, 0, 0);
802 static void set_erase_char(Terminal
*term
)
804 term
->erase_char
= term
->basic_erase_char
;
806 term
->erase_char
.attr
= (term
->curr_attr
&
807 (ATTR_FGMASK
| ATTR_BGMASK
));
811 * When the user reconfigures us, we need to check the forbidden-
812 * alternate-screen config option, disable raw mouse mode if the
813 * user has disabled mouse reporting, and abandon a print job if
814 * the user has disabled printing.
816 void term_reconfig(Terminal
*term
, Config
*cfg
)
819 * Before adopting the new config, check all those terminal
820 * settings which control power-on defaults; and if they've
821 * changed, we will modify the current state as well as the
822 * default one. The full list is: Auto wrap mode, DEC Origin
823 * Mode, BCE, blinking text, character classes.
825 int reset_wrap
, reset_decom
, reset_bce
, reset_blink
, reset_charclass
;
828 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
829 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
830 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
831 reset_blink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
833 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
834 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
837 term
->cfg
= *cfg
; /* STRUCTURE COPY */
840 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
842 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
844 term
->use_bce
= term
->cfg
.bce
;
845 set_erase_char(term
);
848 term
->blink_is_real
= term
->cfg
.blinktext
;
850 for (i
= 0; i
< 256; i
++)
851 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
853 if (term
->cfg
.no_alt_screen
)
854 swap_screen(term
, 0, FALSE
, FALSE
);
855 if (term
->cfg
.no_mouse_rep
) {
856 term
->xterm_mouse
= 0;
857 set_raw_mouse_mode(term
->frontend
, 0);
859 if (term
->cfg
.no_remote_charset
) {
860 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
861 term
->sco_acs
= term
->alt_sco_acs
= 0;
864 if (!*term
->cfg
.printer
) {
865 term_print_finish(term
);
870 * Clear the scrollback.
872 void term_clrsb(Terminal
*term
)
876 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
877 sfree(line
); /* this is compressed data, not a termline */
879 term
->tempsblines
= 0;
880 term
->alt_sblines
= 0;
885 * Initialise the terminal.
887 Terminal
*term_init(Config
*mycfg
, struct unicode_data
*ucsdata
,
893 * Allocate a new Terminal structure and initialise the fields
896 term
= snew(Terminal
);
897 term
->frontend
= frontend
;
898 term
->ucsdata
= ucsdata
;
899 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
901 term
->compatibility_level
= TM_PUTTY
;
902 strcpy(term
->id_string
, "\033[?6c");
903 term
->last_blink
= term
->last_tblink
= 0;
904 term
->paste_buffer
= NULL
;
906 term
->last_paste
= 0;
907 bufchain_init(&term
->inbuf
);
908 bufchain_init(&term
->printer_buf
);
909 term
->printing
= term
->only_printing
= FALSE
;
910 term
->print_job
= NULL
;
911 term
->vt52_mode
= FALSE
;
912 term
->cr_lf_return
= FALSE
;
913 term
->seen_disp_event
= FALSE
;
914 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
915 term
->reset_132
= FALSE
;
916 term
->blinker
= term
->tblinker
= 0;
918 term
->repeat_off
= FALSE
;
919 term
->termstate
= TOPLEVEL
;
920 term
->selstate
= NO_SELECTION
;
923 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
924 term
->tempsblines
= 0;
925 term
->alt_sblines
= 0;
927 term
->disptext
= NULL
;
928 term
->dispcursx
= term
->dispcursy
= -1;
931 term
->rows
= term
->cols
= -1;
933 term
->beephead
= term
->beeptail
= NULL
;
934 #ifdef OPTIMISE_SCROLL
935 term
->scrollhead
= term
->scrolltail
= NULL
;
936 #endif /* OPTIMISE_SCROLL */
938 term
->lastbeep
= FALSE
;
939 term
->beep_overloaded
= FALSE
;
940 term
->attr_mask
= 0xffffffff;
941 term
->resize_fn
= NULL
;
942 term
->resize_ctx
= NULL
;
943 term
->in_term_out
= FALSE
;
948 term
->bidi_cache_size
= 0;
949 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
951 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
952 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
957 void term_free(Terminal
*term
)
960 struct beeptime
*beep
;
963 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
964 sfree(line
); /* compressed data, not a termline */
965 freetree234(term
->scrollback
);
966 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
968 freetree234(term
->screen
);
969 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
971 freetree234(term
->alt_screen
);
972 if (term
->disptext
) {
973 for (i
= 0; i
< term
->rows
; i
++)
974 freeline(term
->disptext
[i
]);
976 sfree(term
->disptext
);
977 while (term
->beephead
) {
978 beep
= term
->beephead
;
979 term
->beephead
= beep
->next
;
982 bufchain_clear(&term
->inbuf
);
984 printer_finish_job(term
->print_job
);
985 bufchain_clear(&term
->printer_buf
);
986 sfree(term
->paste_buffer
);
991 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
992 sfree(term
->pre_bidi_cache
[i
]);
993 sfree(term
->post_bidi_cache
[i
]);
995 sfree(term
->pre_bidi_cache
);
996 sfree(term
->post_bidi_cache
);
1002 * Set up the terminal for a given size.
1004 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1007 termline
**newdisp
, *line
;
1008 int i
, j
, oldrows
= term
->rows
;
1010 int save_alt_which
= term
->alt_which
;
1012 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1013 newsavelines
== term
->savelines
)
1014 return; /* nothing to do */
1017 swap_screen(term
, 0, FALSE
, FALSE
);
1019 term
->alt_t
= term
->marg_t
= 0;
1020 term
->alt_b
= term
->marg_b
= newrows
- 1;
1022 if (term
->rows
== -1) {
1023 term
->scrollback
= newtree234(NULL
);
1024 term
->screen
= newtree234(NULL
);
1025 term
->tempsblines
= 0;
1030 * Resize the screen and scrollback. We only need to shift
1031 * lines around within our data structures, because lineptr()
1032 * will take care of resizing each individual line if
1035 * - If the new screen is longer, we shunt lines in from temporary
1036 * scrollback if possible, otherwise we add new blank lines at
1039 * - If the new screen is shorter, we remove any blank lines at
1040 * the bottom if possible, otherwise shunt lines above the cursor
1041 * to scrollback if possible, otherwise delete lines below the
1044 * - Then, if the new scrollback length is less than the
1045 * amount of scrollback we actually have, we must throw some
1048 sblen
= count234(term
->scrollback
);
1049 /* Do this loop to expand the screen if newrows > rows */
1050 assert(term
->rows
== count234(term
->screen
));
1051 while (term
->rows
< newrows
) {
1052 if (term
->tempsblines
> 0) {
1053 unsigned char *cline
;
1054 /* Insert a line from the scrollback at the top of the screen. */
1055 assert(sblen
>= term
->tempsblines
);
1056 cline
= delpos234(term
->scrollback
, --sblen
);
1057 line
= decompressline(cline
, NULL
);
1059 line
->temporary
= FALSE
; /* reconstituted line is now real */
1060 term
->tempsblines
-= 1;
1061 addpos234(term
->screen
, line
, 0);
1063 term
->savecurs
.y
+= 1;
1065 /* Add a new blank line at the bottom of the screen. */
1066 line
= newline(term
, newcols
, FALSE
);
1067 addpos234(term
->screen
, line
, count234(term
->screen
));
1071 /* Do this loop to shrink the screen if newrows < rows */
1072 while (term
->rows
> newrows
) {
1073 if (term
->curs
.y
< term
->rows
- 1) {
1074 /* delete bottom row, unless it contains the cursor */
1075 sfree(delpos234(term
->screen
, term
->rows
- 1));
1077 /* push top row to scrollback */
1078 line
= delpos234(term
->screen
, 0);
1079 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1081 term
->tempsblines
+= 1;
1083 term
->savecurs
.y
-= 1;
1087 assert(term
->rows
== newrows
);
1088 assert(count234(term
->screen
) == newrows
);
1090 /* Delete any excess lines from the scrollback. */
1091 while (sblen
> newsavelines
) {
1092 line
= delpos234(term
->scrollback
, 0);
1096 if (sblen
< term
->tempsblines
)
1097 term
->tempsblines
= sblen
;
1098 assert(count234(term
->scrollback
) <= newsavelines
);
1099 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1102 /* Make a new displayed text buffer. */
1103 newdisp
= snewn(newrows
, termline
*);
1104 for (i
= 0; i
< newrows
; i
++) {
1105 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1106 for (j
= 0; j
< newcols
; j
++)
1107 newdisp
[i
]->chars
[i
].attr
= ATTR_INVALID
;
1109 if (term
->disptext
) {
1110 for (i
= 0; i
< oldrows
; i
++)
1111 freeline(term
->disptext
[i
]);
1113 sfree(term
->disptext
);
1114 term
->disptext
= newdisp
;
1115 term
->dispcursx
= term
->dispcursy
= -1;
1117 /* Make a new alternate screen. */
1118 newalt
= newtree234(NULL
);
1119 for (i
= 0; i
< newrows
; i
++) {
1120 line
= newline(term
, newcols
, TRUE
);
1121 addpos234(newalt
, line
, i
);
1123 if (term
->alt_screen
) {
1124 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1126 freetree234(term
->alt_screen
);
1128 term
->alt_screen
= newalt
;
1129 term
->alt_sblines
= 0;
1131 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1134 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1135 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1138 /* Check that the cursor positions are still valid. */
1139 if (term
->savecurs
.y
< 0)
1140 term
->savecurs
.y
= 0;
1141 if (term
->savecurs
.y
>= newrows
)
1142 term
->savecurs
.y
= newrows
- 1;
1143 if (term
->curs
.y
< 0)
1145 if (term
->curs
.y
>= newrows
)
1146 term
->curs
.y
= newrows
- 1;
1147 if (term
->curs
.x
>= newcols
)
1148 term
->curs
.x
= newcols
- 1;
1149 term
->alt_x
= term
->alt_y
= 0;
1150 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1152 term
->rows
= newrows
;
1153 term
->cols
= newcols
;
1154 term
->savelines
= newsavelines
;
1157 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1161 if (term
->resize_fn
)
1162 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1166 * Hand a function and context pointer to the terminal which it can
1167 * use to notify a back end of resizes.
1169 void term_provide_resize_fn(Terminal
*term
,
1170 void (*resize_fn
)(void *, int, int),
1173 term
->resize_fn
= resize_fn
;
1174 term
->resize_ctx
= resize_ctx
;
1175 if (term
->cols
> 0 && term
->rows
> 0)
1176 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1179 /* Find the bottom line on the screen that has any content.
1180 * If only the top line has content, returns 0.
1181 * If no lines have content, return -1.
1183 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1186 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1187 termline
*line
= index234(screen
, i
);
1189 for (j
= 0; j
< line
->cols
; j
++) {
1190 if (line
->chars
[j
].chr
!= term
->erase_char
.chr
||
1191 line
->chars
[j
].attr
!= term
->erase_char
.attr
) break;
1193 if (j
!= line
->cols
) break;
1199 * Swap screens. If `reset' is TRUE and we have been asked to
1200 * switch to the alternate screen, we must bring most of its
1201 * configuration from the main screen and erase the contents of the
1202 * alternate screen completely. (This is even true if we're already
1203 * on it! Blame xterm.)
1205 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1211 reset
= FALSE
; /* do no weird resetting if which==0 */
1213 if (which
!= term
->alt_which
) {
1214 term
->alt_which
= which
;
1216 ttr
= term
->alt_screen
;
1217 term
->alt_screen
= term
->screen
;
1219 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1221 if (!reset
&& !keep_cur_pos
)
1222 term
->curs
.x
= term
->alt_x
;
1225 if (!reset
&& !keep_cur_pos
)
1226 term
->curs
.y
= term
->alt_y
;
1229 if (!reset
) term
->marg_t
= term
->alt_t
;
1232 if (!reset
) term
->marg_b
= term
->alt_b
;
1235 if (!reset
) term
->dec_om
= term
->alt_om
;
1238 if (!reset
) term
->wrap
= term
->alt_wrap
;
1241 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1242 term
->alt_wnext
= t
;
1244 if (!reset
) term
->insert
= term
->alt_ins
;
1247 if (!reset
) term
->cset
= term
->alt_cset
;
1250 if (!reset
) term
->utf
= term
->alt_utf
;
1253 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1254 term
->alt_sco_acs
= t
;
1257 if (reset
&& term
->screen
) {
1259 * Yes, this _is_ supposed to honour background-colour-erase.
1261 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1265 * This might not be possible if we're called during
1273 * Update the scroll bar.
1275 static void update_sbar(Terminal
*term
)
1277 int nscroll
= sblines(term
);
1278 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1279 nscroll
+ term
->disptop
, term
->rows
);
1283 * Check whether the region bounded by the two pointers intersects
1284 * the scroll region, and de-select the on-screen selection if so.
1286 static void check_selection(Terminal
*term
, pos from
, pos to
)
1288 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1293 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1294 * for backward.) `sb' is TRUE if the scrolling is permitted to
1295 * affect the scrollback buffer.
1297 * NB this function invalidates all pointers into lines of the
1298 * screen data structures. In particular, you MUST call fix_cpos
1299 * after calling scroll() and before doing anything else that
1300 * uses the cpos shortcut pointer.
1302 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1305 int i
, seltop
, olddisptop
, shift
;
1307 if (topline
!= 0 || term
->alt_which
!= 0)
1310 olddisptop
= term
->disptop
;
1314 line
= delpos234(term
->screen
, botline
);
1315 resizeline(term
, line
, term
->cols
);
1316 for (i
= 0; i
< term
->cols
; i
++)
1317 line
->chars
[i
] = term
->erase_char
;
1318 line
->lattr
= LATTR_NORM
;
1319 addpos234(term
->screen
, line
, topline
);
1321 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
1323 if (term
->selstart
.y
> botline
) {
1324 term
->selstart
.y
= botline
+ 1;
1325 term
->selstart
.x
= 0;
1328 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
1330 if (term
->selend
.y
> botline
) {
1331 term
->selend
.y
= botline
+ 1;
1340 line
= delpos234(term
->screen
, topline
);
1341 if (sb
&& term
->savelines
> 0) {
1342 int sblen
= count234(term
->scrollback
);
1344 * We must add this line to the scrollback. We'll
1345 * remove a line from the top of the scrollback if
1346 * the scrollback is full.
1348 if (sblen
== term
->savelines
) {
1349 unsigned char *cline
;
1352 cline
= delpos234(term
->scrollback
, 0);
1355 term
->tempsblines
+= 1;
1357 addpos234(term
->scrollback
, compressline(line
), sblen
);
1359 line
= newline(term
, term
->cols
, TRUE
);
1362 * If the user is currently looking at part of the
1363 * scrollback, and they haven't enabled any options
1364 * that are going to reset the scrollback as a
1365 * result of this movement, then the chances are
1366 * they'd like to keep looking at the same line. So
1367 * we move their viewpoint at the same rate as the
1368 * scroll, at least until their viewpoint hits the
1369 * top end of the scrollback buffer, at which point
1370 * we don't have the choice any more.
1372 * Thanks to Jan Holmen Holsten for the idea and
1373 * initial implementation.
1375 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
1378 resizeline(term
, line
, term
->cols
);
1379 for (i
= 0; i
< term
->cols
; i
++)
1380 line
->chars
[i
] = term
->erase_char
;
1381 line
->lattr
= LATTR_NORM
;
1382 addpos234(term
->screen
, line
, botline
);
1385 * If the selection endpoints move into the scrollback,
1386 * we keep them moving until they hit the top. However,
1387 * of course, if the line _hasn't_ moved into the
1388 * scrollback then we don't do this, and cut them off
1389 * at the top of the scroll region.
1391 * This applies to selstart and selend (for an existing
1392 * selection), and also selanchor (for one being
1393 * selected as we speak).
1395 seltop
= sb ?
-term
->savelines
: topline
;
1397 if (term
->selstate
!= NO_SELECTION
) {
1398 if (term
->selstart
.y
>= seltop
&&
1399 term
->selstart
.y
<= botline
) {
1401 if (term
->selstart
.y
< seltop
) {
1402 term
->selstart
.y
= seltop
;
1403 term
->selstart
.x
= 0;
1406 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
1408 if (term
->selend
.y
< seltop
) {
1409 term
->selend
.y
= seltop
;
1413 if (term
->selanchor
.y
>= seltop
&&
1414 term
->selanchor
.y
<= botline
) {
1415 term
->selanchor
.y
--;
1416 if (term
->selanchor
.y
< seltop
) {
1417 term
->selanchor
.y
= seltop
;
1418 term
->selanchor
.x
= 0;
1426 #ifdef OPTIMISE_SCROLL
1427 shift
+= term
->disptop
- olddisptop
;
1428 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
1429 scroll_display(term
, topline
, botline
, shift
);
1430 #endif /* OPTIMISE_SCROLL */
1433 #ifdef OPTIMISE_SCROLL
1435 * Add a scroll of a region on the screen into the pending scroll list.
1436 * `lines' is +ve for scrolling forward, -ve for backward.
1438 * If the scroll is on the same area as the last scroll in the list,
1441 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
1443 struct scrollregion
*newscroll
;
1444 if (term
->scrolltail
&&
1445 term
->scrolltail
->topline
== topline
&&
1446 term
->scrolltail
->botline
== botline
) {
1447 term
->scrolltail
->lines
+= lines
;
1449 newscroll
= snew(struct scrollregion
);
1450 newscroll
->topline
= topline
;
1451 newscroll
->botline
= botline
;
1452 newscroll
->lines
= lines
;
1453 newscroll
->next
= NULL
;
1455 if (!term
->scrollhead
)
1456 term
->scrollhead
= newscroll
;
1458 term
->scrolltail
->next
= newscroll
;
1459 term
->scrolltail
= newscroll
;
1464 * Scroll the physical display, and our conception of it in disptext.
1466 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
1468 int distance
, nlines
, i
;
1470 distance
= lines
> 0 ? lines
: -lines
;
1471 nlines
= botline
- topline
+ 1 - distance
;
1473 for (i
= 0; i
< nlines
; i
++)
1474 memcpy(term
->disptext
[start
+i
]->chars
,
1475 term
->disptext
[start
+i
+distance
]->chars
,
1476 term
->cols
* TSIZE
);
1477 if (term
->dispcursy
>= 0 &&
1478 term
->dispcursy
>= topline
+ distance
&&
1479 term
->dispcursy
< topline
+ distance
+ nlines
)
1480 term
->dispcursy
-= distance
;
1481 for (i
= 0; i
< distance
; i
++)
1482 for (j
= 0; j
< term
->cols
; j
++)
1483 term
->disptext
[start
+nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
1485 for (i
= nlines
; i
-- ;)
1486 memcpy(term
->disptext
[start
+i
+distance
]->chars
,
1487 term
->disptext
[start
+i
]->chars
,
1488 term
->cols
* TSIZE
);
1489 if (term
->dispcursy
>= 0 &&
1490 term
->dispcursy
>= topline
&&
1491 term
->dispcursy
< topline
+ nlines
)
1492 term
->dispcursy
+= distance
;
1493 for (i
= 0; i
< distance
; i
++)
1494 for (j
= 0; j
< term
->cols
; j
++)
1495 term
->disptext
[start
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
1497 save_scroll(term
, topline
, botline
, lines
);
1499 #endif /* OPTIMISE_SCROLL */
1502 * Move the cursor to a given position, clipping at boundaries. We
1503 * may or may not want to clip at the scroll margin: marg_clip is 0
1504 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
1505 * even _being_ outside the margins.
1507 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
1511 if (x
>= term
->cols
)
1514 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
1517 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
1523 if (y
>= term
->rows
)
1528 term
->wrapnext
= FALSE
;
1532 * Save or restore the cursor and SGR mode.
1534 static void save_cursor(Terminal
*term
, int save
)
1537 term
->savecurs
= term
->curs
;
1538 term
->save_attr
= term
->curr_attr
;
1539 term
->save_cset
= term
->cset
;
1540 term
->save_utf
= term
->utf
;
1541 term
->save_wnext
= term
->wrapnext
;
1542 term
->save_csattr
= term
->cset_attr
[term
->cset
];
1543 term
->save_sco_acs
= term
->sco_acs
;
1545 term
->curs
= term
->savecurs
;
1546 /* Make sure the window hasn't shrunk since the save */
1547 if (term
->curs
.x
>= term
->cols
)
1548 term
->curs
.x
= term
->cols
- 1;
1549 if (term
->curs
.y
>= term
->rows
)
1550 term
->curs
.y
= term
->rows
- 1;
1552 term
->curr_attr
= term
->save_attr
;
1553 term
->cset
= term
->save_cset
;
1554 term
->utf
= term
->save_utf
;
1555 term
->wrapnext
= term
->save_wnext
;
1557 * wrapnext might reset to False if the x position is no
1558 * longer at the rightmost edge.
1560 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
1561 term
->wrapnext
= FALSE
;
1562 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
1563 term
->sco_acs
= term
->save_sco_acs
;
1565 set_erase_char(term
);
1570 * This function is called before doing _anything_ which affects
1571 * only part of a line of text. It is used to mark the boundary
1572 * between two character positions, and it indicates that some sort
1573 * of effect is going to happen on only one side of that boundary.
1575 * The effect of this function is to check whether a CJK
1576 * double-width character is straddling the boundary, and to remove
1577 * it and replace it with two spaces if so. (Of course, one or
1578 * other of those spaces is then likely to be replaced with
1579 * something else again, as a result of whatever happens next.)
1581 * Also, if the boundary is at the right-hand _edge_ of the screen,
1582 * it implies something deliberate is being done to the rightmost
1583 * column position; hence we must clear LATTR_WRAPPED2.
1585 * The input to the function is the coordinates of the _second_
1586 * character of the pair.
1588 static void check_boundary(Terminal
*term
, int x
, int y
)
1592 /* Validate input coordinates, just in case. */
1593 if (x
== 0 || x
> term
->cols
)
1596 ldata
= scrlineptr(y
);
1597 if (x
== term
->cols
) {
1598 ldata
->lattr
&= ~LATTR_WRAPPED2
;
1600 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
1601 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
1602 ldata
->chars
[x
] = ldata
->chars
[x
-1];
1608 * Erase a large portion of the screen: the whole screen, or the
1609 * whole line, or parts thereof.
1611 static void erase_lots(Terminal
*term
,
1612 int line_only
, int from_begin
, int to_end
)
1616 int erasing_lines_from_top
= 0;
1619 start
.y
= term
->curs
.y
;
1621 end
.y
= term
->curs
.y
+ 1;
1623 erase_lattr
= FALSE
;
1638 if (!from_begin
|| !to_end
)
1639 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1640 check_selection(term
, start
, end
);
1642 /* Clear screen also forces a full window redraw, just in case. */
1643 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
1644 term_invalidate(term
);
1646 /* Lines scrolled away shouldn't be brought back on if the terminal
1648 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
1649 erasing_lines_from_top
= 1;
1651 if (term
->cfg
.erase_to_scrollback
&& erasing_lines_from_top
) {
1652 /* If it's a whole number of lines, starting at the top, and
1653 * we're fully erasing them, erase by scrolling and keep the
1654 * lines in the scrollback. */
1655 int scrolllines
= end
.y
;
1656 if (end
.y
== term
->rows
) {
1657 /* Shrink until we find a non-empty row.*/
1658 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
1660 if (scrolllines
> 0)
1661 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
1664 termline
*ldata
= scrlineptr(start
.y
);
1665 while (poslt(start
, end
)) {
1666 if (start
.x
== term
->cols
) {
1668 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
1670 ldata
->lattr
= LATTR_NORM
;
1672 ldata
->chars
[start
.x
] = term
->erase_char
;
1674 if (incpos(start
) && start
.y
< term
->rows
) {
1675 ldata
= scrlineptr(start
.y
);
1680 /* After an erase of lines from the top of the screen, we shouldn't
1681 * bring the lines back again if the terminal enlarges (since the user or
1682 * application has explictly thrown them away). */
1683 if (erasing_lines_from_top
&& !(term
->alt_which
))
1684 term
->tempsblines
= 0;
1688 * Insert or delete characters within the current line. n is +ve if
1689 * insertion is desired, and -ve for deletion.
1691 static void insch(Terminal
*term
, int n
)
1693 int dir
= (n
< 0 ?
-1 : +1);
1698 n
= (n
< 0 ?
-n
: n
);
1699 if (n
> term
->cols
- term
->curs
.x
)
1700 n
= term
->cols
- term
->curs
.x
;
1701 m
= term
->cols
- term
->curs
.x
- n
;
1702 cursplus
.y
= term
->curs
.y
;
1703 cursplus
.x
= term
->curs
.x
+ n
;
1704 check_selection(term
, term
->curs
, cursplus
);
1705 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1707 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
1708 ldata
= scrlineptr(term
->curs
.y
);
1710 memmove(ldata
->chars
+ term
->curs
.x
, ldata
->chars
+ term
->curs
.x
+ n
,
1713 ldata
->chars
[term
->curs
.x
+ m
++] = term
->erase_char
;
1715 memmove(ldata
->chars
+ term
->curs
.x
+ n
, ldata
->chars
+ term
->curs
.x
,
1718 ldata
->chars
[term
->curs
.x
+ n
] = term
->erase_char
;
1723 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1724 * whether the mode is a DEC private one or a normal one.)
1726 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
1728 unsigned long ticks
;
1732 case 1: /* DECCKM: application cursor keys */
1733 term
->app_cursor_keys
= state
;
1735 case 2: /* DECANM: VT52 mode */
1736 term
->vt52_mode
= !state
;
1737 if (term
->vt52_mode
) {
1738 term
->blink_is_real
= FALSE
;
1739 term
->vt52_bold
= FALSE
;
1741 term
->blink_is_real
= term
->cfg
.blinktext
;
1744 case 3: /* DECCOLM: 80/132 columns */
1746 if (!term
->cfg
.no_remote_resize
)
1747 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
1748 term
->reset_132
= state
;
1749 term
->alt_t
= term
->marg_t
= 0;
1750 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1751 move(term
, 0, 0, 0);
1752 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1754 case 5: /* DECSCNM: reverse video */
1756 * Toggle reverse video. If we receive an OFF within the
1757 * visual bell timeout period after an ON, we trigger an
1758 * effective visual bell, so that ESC[?5hESC[?5l will
1759 * always be an actually _visible_ visual bell.
1761 ticks
= GETTICKCOUNT();
1762 /* turn off a previous vbell to avoid inconsistencies */
1763 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
1764 term
->in_vbell
= FALSE
;
1765 if (term
->rvideo
&& !state
&& /* we're turning it off... */
1766 (ticks
- term
->rvbell_startpoint
) < VBELL_TIMEOUT
) {/*...soon*/
1767 /* If there's no vbell timeout already, or this one lasts
1768 * longer, replace vbell_timeout with ours. */
1769 if (!term
->in_vbell
||
1770 (term
->rvbell_startpoint
- term
->vbell_startpoint
<
1772 term
->vbell_startpoint
= term
->rvbell_startpoint
;
1773 term
->in_vbell
= TRUE
; /* may clear rvideo but set in_vbell */
1774 } else if (!term
->rvideo
&& state
) {
1775 /* This is an ON, so we notice the time and save it. */
1776 term
->rvbell_startpoint
= ticks
;
1778 term
->rvideo
= state
;
1779 term
->seen_disp_event
= TRUE
;
1783 case 6: /* DECOM: DEC origin mode */
1784 term
->dec_om
= state
;
1786 case 7: /* DECAWM: auto wrap */
1789 case 8: /* DECARM: auto key repeat */
1790 term
->repeat_off
= !state
;
1792 case 10: /* DECEDM: set local edit mode */
1793 term
->term_editing
= state
;
1794 if (term
->ldisc
) /* cause ldisc to notice changes */
1795 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1797 case 25: /* DECTCEM: enable/disable cursor */
1798 compatibility2(OTHER
, VT220
);
1799 term
->cursor_on
= state
;
1800 term
->seen_disp_event
= TRUE
;
1802 case 47: /* alternate screen */
1803 compatibility(OTHER
);
1805 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
1808 case 1000: /* xterm mouse 1 */
1809 term
->xterm_mouse
= state ?
1 : 0;
1810 set_raw_mouse_mode(term
->frontend
, state
);
1812 case 1002: /* xterm mouse 2 */
1813 term
->xterm_mouse
= state ?
2 : 0;
1814 set_raw_mouse_mode(term
->frontend
, state
);
1816 case 1047: /* alternate screen */
1817 compatibility(OTHER
);
1819 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
1822 case 1048: /* save/restore cursor */
1823 if (!term
->cfg
.no_alt_screen
)
1824 save_cursor(term
, state
);
1825 if (!state
) term
->seen_disp_event
= TRUE
;
1827 case 1049: /* cursor & alternate screen */
1828 if (state
&& !term
->cfg
.no_alt_screen
)
1829 save_cursor(term
, state
);
1830 if (!state
) term
->seen_disp_event
= TRUE
;
1831 compatibility(OTHER
);
1833 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
1834 if (!state
&& !term
->cfg
.no_alt_screen
)
1835 save_cursor(term
, state
);
1840 case 4: /* IRM: set insert mode */
1841 compatibility(VT102
);
1842 term
->insert
= state
;
1844 case 12: /* SRM: set echo mode */
1845 term
->term_echoing
= !state
;
1846 if (term
->ldisc
) /* cause ldisc to notice changes */
1847 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1849 case 20: /* LNM: Return sends ... */
1850 term
->cr_lf_return
= state
;
1852 case 34: /* WYULCURM: Make cursor BIG */
1853 compatibility2(OTHER
, VT220
);
1854 term
->big_cursor
= !state
;
1859 * Process an OSC sequence: set window title or icon name.
1861 static void do_osc(Terminal
*term
)
1864 while (term
->osc_strlen
--)
1865 term
->wordness
[(unsigned char)
1866 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
1868 term
->osc_string
[term
->osc_strlen
] = '\0';
1869 switch (term
->esc_args
[0]) {
1872 if (!term
->cfg
.no_remote_wintitle
)
1873 set_icon(term
->frontend
, term
->osc_string
);
1874 if (term
->esc_args
[0] == 1)
1876 /* fall through: parameter 0 means set both */
1879 if (!term
->cfg
.no_remote_wintitle
)
1880 set_title(term
->frontend
, term
->osc_string
);
1887 * ANSI printing routines.
1889 static void term_print_setup(Terminal
*term
)
1891 bufchain_clear(&term
->printer_buf
);
1892 term
->print_job
= printer_start_job(term
->cfg
.printer
);
1894 static void term_print_flush(Terminal
*term
)
1899 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
1900 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1903 printer_job_data(term
->print_job
, data
, len
);
1904 bufchain_consume(&term
->printer_buf
, len
);
1907 static void term_print_finish(Terminal
*term
)
1913 if (!term
->printing
&& !term
->only_printing
)
1914 return; /* we need do nothing */
1916 term_print_flush(term
);
1917 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
1918 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1920 if (c
== '\033' || c
== '\233') {
1921 bufchain_consume(&term
->printer_buf
, size
);
1924 printer_job_data(term
->print_job
, &c
, 1);
1925 bufchain_consume(&term
->printer_buf
, 1);
1928 printer_finish_job(term
->print_job
);
1929 term
->print_job
= NULL
;
1930 term
->printing
= term
->only_printing
= FALSE
;
1934 * Remove everything currently in `inbuf' and stick it up on the
1935 * in-memory display. There's a big state machine in here to
1936 * process escape sequences...
1938 void term_out(Terminal
*term
)
1942 unsigned char localbuf
[256], *chars
;
1947 chars
= NULL
; /* placate compiler warnings */
1948 while (nchars
> 0 || bufchain_size(&term
->inbuf
) > 0) {
1952 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
1953 if (nchars
> sizeof(localbuf
))
1954 nchars
= sizeof(localbuf
);
1955 memcpy(localbuf
, ret
, nchars
);
1956 bufchain_consume(&term
->inbuf
, nchars
);
1958 assert(chars
!= NULL
);
1964 * Optionally log the session traffic to a file. Useful for
1965 * debugging and possibly also useful for actual logging.
1967 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
1968 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
1974 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1975 * be able to display 8-bit characters, but I'll let that go 'cause
1980 * If we're printing, add the character to the printer
1983 if (term
->printing
) {
1984 bufchain_add(&term
->printer_buf
, &c
, 1);
1987 * If we're in print-only mode, we use a much simpler
1988 * state machine designed only to recognise the ESC[4i
1989 * termination sequence.
1991 if (term
->only_printing
) {
1993 term
->print_state
= 1;
1994 else if (c
== (unsigned char)'\233')
1995 term
->print_state
= 2;
1996 else if (c
== '[' && term
->print_state
== 1)
1997 term
->print_state
= 2;
1998 else if (c
== '4' && term
->print_state
== 2)
1999 term
->print_state
= 3;
2000 else if (c
== 'i' && term
->print_state
== 3)
2001 term
->print_state
= 4;
2003 term
->print_state
= 0;
2004 if (term
->print_state
== 4) {
2005 term_print_finish(term
);
2011 /* First see about all those translations. */
2012 if (term
->termstate
== TOPLEVEL
) {
2014 switch (term
->utf_state
) {
2017 /* UTF-8 must be stateless so we ignore iso2022. */
2018 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2019 c
= term
->ucsdata
->unitab_ctrl
[c
];
2020 else c
= ((unsigned char)c
) | CSET_ASCII
;
2022 } else if ((c
& 0xe0) == 0xc0) {
2023 term
->utf_size
= term
->utf_state
= 1;
2024 term
->utf_char
= (c
& 0x1f);
2025 } else if ((c
& 0xf0) == 0xe0) {
2026 term
->utf_size
= term
->utf_state
= 2;
2027 term
->utf_char
= (c
& 0x0f);
2028 } else if ((c
& 0xf8) == 0xf0) {
2029 term
->utf_size
= term
->utf_state
= 3;
2030 term
->utf_char
= (c
& 0x07);
2031 } else if ((c
& 0xfc) == 0xf8) {
2032 term
->utf_size
= term
->utf_state
= 4;
2033 term
->utf_char
= (c
& 0x03);
2034 } else if ((c
& 0xfe) == 0xfc) {
2035 term
->utf_size
= term
->utf_state
= 5;
2036 term
->utf_char
= (c
& 0x01);
2047 if ((c
& 0xC0) != 0x80) {
2050 term
->utf_state
= 0;
2053 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2054 if (--term
->utf_state
)
2059 /* Is somebody trying to be evil! */
2061 (c
< 0x800 && term
->utf_size
>= 2) ||
2062 (c
< 0x10000 && term
->utf_size
>= 3) ||
2063 (c
< 0x200000 && term
->utf_size
>= 4) ||
2064 (c
< 0x4000000 && term
->utf_size
>= 5))
2067 /* Unicode line separator and paragraph separator are CR-LF */
2068 if (c
== 0x2028 || c
== 0x2029)
2071 /* High controls are probably a Baaad idea too. */
2075 /* The UTF-16 surrogates are not nice either. */
2076 /* The standard give the option of decoding these:
2077 * I don't want to! */
2078 if (c
>= 0xD800 && c
< 0xE000)
2081 /* ISO 10646 characters now limited to UTF-16 range. */
2085 /* This is currently a TagPhobic application.. */
2086 if (c
>= 0xE0000 && c
<= 0xE007F)
2089 /* U+FEFF is best seen as a null. */
2092 /* But U+FFFE is an error. */
2093 if (c
== 0xFFFE || c
== 0xFFFF)
2098 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2099 else if(term
->sco_acs
&&
2100 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2102 if (term
->sco_acs
== 2) c
|= 0x80;
2105 switch (term
->cset_attr
[term
->cset
]) {
2107 * Linedraw characters are different from 'ESC ( B'
2108 * only for a small range. For ones outside that
2109 * range, make sure we use the same font as well as
2110 * the same encoding.
2113 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2114 c
= term
->ucsdata
->unitab_ctrl
[c
];
2116 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2120 /* If UK-ASCII, make the '#' a LineDraw Pound */
2122 c
= '}' | CSET_LINEDRW
;
2125 /*FALLTHROUGH*/ case CSET_ASCII
:
2126 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2127 c
= term
->ucsdata
->unitab_ctrl
[c
];
2129 c
= ((unsigned char) c
) | CSET_ASCII
;
2132 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2138 /* How about C1 controls ? */
2139 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2140 !term
->vt52_mode
&& has_compat(VT220
)) {
2141 term
->termstate
= SEEN_ESC
;
2142 term
->esc_query
= FALSE
;
2143 c
= '@' + (c
& 0x1F);
2146 /* Or the GL control. */
2147 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2148 if (term
->curs
.x
&& !term
->wrapnext
)
2150 term
->wrapnext
= FALSE
;
2152 /* destructive backspace might be disabled */
2153 if (!term
->cfg
.no_dbackspace
) {
2154 term
->cpos
->chr
= ' ' | CSET_ASCII
;
2155 term
->cpos
->attr
= term
->curr_attr
;
2158 /* Or normal C0 controls. */
2159 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2161 case '\005': /* ENQ: terminal type query */
2162 /* Strictly speaking this is VT100 but a VT100 defaults to
2163 * no response. Other terminals respond at their option.
2165 * Don't put a CR in the default string as this tends to
2166 * upset some weird software.
2168 * An xterm returns "xterm" (5 characters)
2170 compatibility(ANSIMIN
);
2172 char abuf
[256], *s
, *d
;
2174 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
; s
++) {
2176 if (*s
>= 'a' && *s
<= 'z')
2177 *d
++ = (*s
- ('a' - 1));
2178 else if ((*s
>= '@' && *s
<= '_') ||
2179 *s
== '?' || (*s
& 0x80))
2184 } else if (*s
== '^') {
2189 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2193 case '\007': /* BEL: Bell */
2195 struct beeptime
*newbeep
;
2196 unsigned long ticks
;
2198 ticks
= GETTICKCOUNT();
2200 if (!term
->beep_overloaded
) {
2201 newbeep
= snew(struct beeptime
);
2202 newbeep
->ticks
= ticks
;
2203 newbeep
->next
= NULL
;
2204 if (!term
->beephead
)
2205 term
->beephead
= newbeep
;
2207 term
->beeptail
->next
= newbeep
;
2208 term
->beeptail
= newbeep
;
2213 * Throw out any beeps that happened more than
2216 while (term
->beephead
&&
2217 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
2218 struct beeptime
*tmp
= term
->beephead
;
2219 term
->beephead
= tmp
->next
;
2221 if (!term
->beephead
)
2222 term
->beeptail
= NULL
;
2226 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
2227 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
2229 * If we're currently overloaded and the
2230 * last beep was more than s seconds ago,
2231 * leave overload mode.
2233 term
->beep_overloaded
= FALSE
;
2234 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
2235 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
2237 * Now, if we have n or more beeps
2238 * remaining in the queue, go into overload
2241 term
->beep_overloaded
= TRUE
;
2243 term
->lastbeep
= ticks
;
2246 * Perform an actual beep if we're not overloaded.
2248 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
2249 beep(term
->frontend
, term
->cfg
.beep
);
2250 if (term
->cfg
.beep
== BELL_VISUAL
) {
2251 term
->in_vbell
= TRUE
;
2252 term
->vbell_startpoint
= ticks
;
2256 term
->seen_disp_event
= TRUE
;
2259 case '\b': /* BS: Back space */
2260 if (term
->curs
.x
== 0 &&
2261 (term
->curs
.y
== 0 || term
->wrap
== 0))
2263 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2264 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2265 else if (term
->wrapnext
)
2266 term
->wrapnext
= FALSE
;
2270 term
->seen_disp_event
= TRUE
;
2272 case '\016': /* LS1: Locking-shift one */
2273 compatibility(VT100
);
2276 case '\017': /* LS0: Locking-shift zero */
2277 compatibility(VT100
);
2280 case '\033': /* ESC: Escape */
2281 if (term
->vt52_mode
)
2282 term
->termstate
= VT52_ESC
;
2284 compatibility(ANSIMIN
);
2285 term
->termstate
= SEEN_ESC
;
2286 term
->esc_query
= FALSE
;
2289 case '\015': /* CR: Carriage return */
2291 term
->wrapnext
= FALSE
;
2293 term
->seen_disp_event
= TRUE
;
2294 term
->paste_hold
= 0;
2296 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2298 case '\014': /* FF: Form feed */
2299 if (has_compat(SCOANSI
)) {
2300 move(term
, 0, 0, 0);
2301 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2303 term
->wrapnext
= FALSE
;
2304 term
->seen_disp_event
= 1;
2307 case '\013': /* VT: Line tabulation */
2308 compatibility(VT100
);
2309 case '\012': /* LF: Line feed */
2310 if (term
->curs
.y
== term
->marg_b
)
2311 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2312 else if (term
->curs
.y
< term
->rows
- 1)
2314 if (term
->cfg
.lfhascr
)
2317 term
->wrapnext
= FALSE
;
2318 term
->seen_disp_event
= 1;
2319 term
->paste_hold
= 0;
2321 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2323 case '\t': /* HT: Character tabulation */
2325 pos old_curs
= term
->curs
;
2326 termline
*ldata
= scrlineptr(term
->curs
.y
);
2330 } while (term
->curs
.x
< term
->cols
- 1 &&
2331 !term
->tabs
[term
->curs
.x
]);
2333 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
2334 if (term
->curs
.x
>= term
->cols
/ 2)
2335 term
->curs
.x
= term
->cols
/ 2 - 1;
2337 if (term
->curs
.x
>= term
->cols
)
2338 term
->curs
.x
= term
->cols
- 1;
2342 check_selection(term
, old_curs
, term
->curs
);
2344 term
->seen_disp_event
= TRUE
;
2348 switch (term
->termstate
) {
2350 /* Only graphic characters get this far;
2351 * ctrls are stripped above */
2352 if (term
->wrapnext
&& term
->wrap
) {
2353 scrlineptr(term
->curs
.y
)->lattr
|= LATTR_WRAPPED
;
2354 if (term
->curs
.y
== term
->marg_b
)
2355 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2356 else if (term
->curs
.y
< term
->rows
- 1)
2360 term
->wrapnext
= FALSE
;
2364 if (term
->selstate
!= NO_SELECTION
) {
2365 pos cursplus
= term
->curs
;
2367 check_selection(term
, term
->curs
, cursplus
);
2369 if (((c
& CSET_MASK
) == CSET_ASCII
|| (c
& CSET_MASK
) == 0) &&
2371 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2377 width
= wcwidth((wchar_t) c
);
2381 * If we're about to display a double-width
2382 * character starting in the rightmost
2383 * column, then we do something special
2384 * instead. We must print a space in the
2385 * last column of the screen, then wrap;
2386 * and we also set LATTR_WRAPPED2 which
2387 * instructs subsequent cut-and-pasting not
2388 * only to splice this line to the one
2389 * after it, but to ignore the space in the
2390 * last character position as well.
2391 * (Because what was actually output to the
2392 * terminal was presumably just a sequence
2393 * of CJK characters, and we don't want a
2394 * space to be pasted in the middle of
2395 * those just because they had the
2396 * misfortune to start in the wrong parity
2397 * column. xterm concurs.)
2399 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2400 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2401 if (term
->curs
.x
== term
->cols
-1) {
2402 term
->cpos
->chr
= CSET_ASCII
| ' ';
2403 term
->cpos
->attr
= term
->curr_attr
;
2404 scrlineptr(term
->curs
.y
)->lattr
|=
2405 LATTR_WRAPPED
| LATTR_WRAPPED2
;
2406 if (term
->curs
.y
== term
->marg_b
)
2407 scroll(term
, term
->marg_t
, term
->marg_b
,
2409 else if (term
->curs
.y
< term
->rows
- 1)
2413 /* Now we must check_boundary again, of course. */
2414 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2415 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2417 term
->cpos
->chr
= c
;
2418 term
->cpos
->attr
= term
->curr_attr
;
2420 term
->cpos
->chr
= UCSWIDE
;
2421 term
->cpos
->attr
= term
->curr_attr
;
2425 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2426 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2427 term
->cpos
->chr
= c
;
2428 term
->cpos
->attr
= term
->curr_attr
;
2436 if (term
->curs
.x
== term
->cols
) {
2439 term
->wrapnext
= TRUE
;
2440 if (term
->wrap
&& term
->vt52_mode
) {
2441 scrlineptr(term
->curs
.y
)->lattr
|= LATTR_WRAPPED
;
2442 if (term
->curs
.y
== term
->marg_b
)
2443 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2444 else if (term
->curs
.y
< term
->rows
- 1)
2448 term
->wrapnext
= FALSE
;
2451 term
->seen_disp_event
= 1;
2456 * This state is virtually identical to SEEN_ESC, with the
2457 * exception that we have an OSC sequence in the pipeline,
2458 * and _if_ we see a backslash, we process it.
2462 term
->termstate
= TOPLEVEL
;
2465 /* else fall through */
2467 if (c
>= ' ' && c
<= '/') {
2468 if (term
->esc_query
)
2469 term
->esc_query
= -1;
2471 term
->esc_query
= c
;
2474 term
->termstate
= TOPLEVEL
;
2475 switch (ANSI(c
, term
->esc_query
)) {
2476 case '[': /* enter CSI mode */
2477 term
->termstate
= SEEN_CSI
;
2478 term
->esc_nargs
= 1;
2479 term
->esc_args
[0] = ARG_DEFAULT
;
2480 term
->esc_query
= FALSE
;
2482 case ']': /* OSC: xterm escape sequences */
2483 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
2484 compatibility(OTHER
);
2485 term
->termstate
= SEEN_OSC
;
2486 term
->esc_args
[0] = 0;
2488 case '7': /* DECSC: save cursor */
2489 compatibility(VT100
);
2490 save_cursor(term
, TRUE
);
2492 case '8': /* DECRC: restore cursor */
2493 compatibility(VT100
);
2494 save_cursor(term
, FALSE
);
2495 term
->seen_disp_event
= TRUE
;
2497 case '=': /* DECKPAM: Keypad application mode */
2498 compatibility(VT100
);
2499 term
->app_keypad_keys
= TRUE
;
2501 case '>': /* DECKPNM: Keypad numeric mode */
2502 compatibility(VT100
);
2503 term
->app_keypad_keys
= FALSE
;
2505 case 'D': /* IND: exactly equivalent to LF */
2506 compatibility(VT100
);
2507 if (term
->curs
.y
== term
->marg_b
)
2508 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2509 else if (term
->curs
.y
< term
->rows
- 1)
2512 term
->wrapnext
= FALSE
;
2513 term
->seen_disp_event
= TRUE
;
2515 case 'E': /* NEL: exactly equivalent to CR-LF */
2516 compatibility(VT100
);
2518 if (term
->curs
.y
== term
->marg_b
)
2519 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2520 else if (term
->curs
.y
< term
->rows
- 1)
2523 term
->wrapnext
= FALSE
;
2524 term
->seen_disp_event
= TRUE
;
2526 case 'M': /* RI: reverse index - backwards LF */
2527 compatibility(VT100
);
2528 if (term
->curs
.y
== term
->marg_t
)
2529 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
2530 else if (term
->curs
.y
> 0)
2533 term
->wrapnext
= FALSE
;
2534 term
->seen_disp_event
= TRUE
;
2536 case 'Z': /* DECID: terminal type query */
2537 compatibility(VT100
);
2539 ldisc_send(term
->ldisc
, term
->id_string
,
2540 strlen(term
->id_string
), 0);
2542 case 'c': /* RIS: restore power-on settings */
2543 compatibility(VT100
);
2545 if (term
->ldisc
) /* cause ldisc to notice changes */
2546 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2547 if (term
->reset_132
) {
2548 if (!term
->cfg
.no_remote_resize
)
2549 request_resize(term
->frontend
, 80, term
->rows
);
2550 term
->reset_132
= 0;
2554 term
->seen_disp_event
= TRUE
;
2556 case 'H': /* HTS: set a tab */
2557 compatibility(VT100
);
2558 term
->tabs
[term
->curs
.x
] = TRUE
;
2561 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
2562 compatibility(VT100
);
2568 for (i
= 0; i
< term
->rows
; i
++) {
2569 ldata
= scrlineptr(i
);
2570 for (j
= 0; j
< term
->cols
; j
++) {
2571 ldata
->chars
[j
] = term
->basic_erase_char
;
2572 ldata
->chars
[j
].chr
= 'E';
2574 ldata
->lattr
= LATTR_NORM
;
2577 term
->seen_disp_event
= TRUE
;
2578 scrtop
.x
= scrtop
.y
= 0;
2580 scrbot
.y
= term
->rows
;
2581 check_selection(term
, scrtop
, scrbot
);
2585 case ANSI('3', '#'):
2586 case ANSI('4', '#'):
2587 case ANSI('5', '#'):
2588 case ANSI('6', '#'):
2589 compatibility(VT100
);
2593 switch (ANSI(c
, term
->esc_query
)) {
2594 case ANSI('3', '#'): /* DECDHL: 2*height, top */
2597 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
2600 case ANSI('5', '#'): /* DECSWL: normal */
2601 nlattr
= LATTR_NORM
;
2603 default: /* case ANSI('6', '#'): DECDWL: 2*width */
2604 nlattr
= LATTR_WIDE
;
2607 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
2610 /* GZD4: G0 designate 94-set */
2611 case ANSI('A', '('):
2612 compatibility(VT100
);
2613 if (!term
->cfg
.no_remote_charset
)
2614 term
->cset_attr
[0] = CSET_GBCHR
;
2616 case ANSI('B', '('):
2617 compatibility(VT100
);
2618 if (!term
->cfg
.no_remote_charset
)
2619 term
->cset_attr
[0] = CSET_ASCII
;
2621 case ANSI('0', '('):
2622 compatibility(VT100
);
2623 if (!term
->cfg
.no_remote_charset
)
2624 term
->cset_attr
[0] = CSET_LINEDRW
;
2626 case ANSI('U', '('):
2627 compatibility(OTHER
);
2628 if (!term
->cfg
.no_remote_charset
)
2629 term
->cset_attr
[0] = CSET_SCOACS
;
2631 /* G1D4: G1-designate 94-set */
2632 case ANSI('A', ')'):
2633 compatibility(VT100
);
2634 if (!term
->cfg
.no_remote_charset
)
2635 term
->cset_attr
[1] = CSET_GBCHR
;
2637 case ANSI('B', ')'):
2638 compatibility(VT100
);
2639 if (!term
->cfg
.no_remote_charset
)
2640 term
->cset_attr
[1] = CSET_ASCII
;
2642 case ANSI('0', ')'):
2643 compatibility(VT100
);
2644 if (!term
->cfg
.no_remote_charset
)
2645 term
->cset_attr
[1] = CSET_LINEDRW
;
2647 case ANSI('U', ')'):
2648 compatibility(OTHER
);
2649 if (!term
->cfg
.no_remote_charset
)
2650 term
->cset_attr
[1] = CSET_SCOACS
;
2652 /* DOCS: Designate other coding system */
2653 case ANSI('8', '%'): /* Old Linux code */
2654 case ANSI('G', '%'):
2655 compatibility(OTHER
);
2656 if (!term
->cfg
.no_remote_charset
)
2659 case ANSI('@', '%'):
2660 compatibility(OTHER
);
2661 if (!term
->cfg
.no_remote_charset
)
2667 term
->termstate
= TOPLEVEL
; /* default */
2669 if (term
->esc_nargs
<= ARGS_MAX
) {
2670 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
2671 term
->esc_args
[term
->esc_nargs
- 1] = 0;
2672 term
->esc_args
[term
->esc_nargs
- 1] =
2673 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
2675 term
->termstate
= SEEN_CSI
;
2676 } else if (c
== ';') {
2677 if (++term
->esc_nargs
<= ARGS_MAX
)
2678 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
2679 term
->termstate
= SEEN_CSI
;
2680 } else if (c
< '@') {
2681 if (term
->esc_query
)
2682 term
->esc_query
= -1;
2684 term
->esc_query
= TRUE
;
2686 term
->esc_query
= c
;
2687 term
->termstate
= SEEN_CSI
;
2689 switch (ANSI(c
, term
->esc_query
)) {
2690 case 'A': /* CUU: move up N lines */
2691 move(term
, term
->curs
.x
,
2692 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
2693 term
->seen_disp_event
= TRUE
;
2695 case 'e': /* VPR: move down N lines */
2696 compatibility(ANSI
);
2698 case 'B': /* CUD: Cursor down */
2699 move(term
, term
->curs
.x
,
2700 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
2701 term
->seen_disp_event
= TRUE
;
2703 case ANSI('c', '>'): /* DA: report xterm version */
2704 compatibility(OTHER
);
2705 /* this reports xterm version 136 so that VIM can
2706 use the drag messages from the mouse reporting */
2708 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
2710 case 'a': /* HPR: move right N cols */
2711 compatibility(ANSI
);
2713 case 'C': /* CUF: Cursor right */
2714 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
2716 term
->seen_disp_event
= TRUE
;
2718 case 'D': /* CUB: move left N cols */
2719 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
2721 term
->seen_disp_event
= TRUE
;
2723 case 'E': /* CNL: move down N lines and CR */
2724 compatibility(ANSI
);
2726 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
2727 term
->seen_disp_event
= TRUE
;
2729 case 'F': /* CPL: move up N lines and CR */
2730 compatibility(ANSI
);
2732 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
2733 term
->seen_disp_event
= TRUE
;
2736 case '`': /* HPA: set horizontal posn */
2737 compatibility(ANSI
);
2738 move(term
, def(term
->esc_args
[0], 1) - 1,
2740 term
->seen_disp_event
= TRUE
;
2742 case 'd': /* VPA: set vertical posn */
2743 compatibility(ANSI
);
2744 move(term
, term
->curs
.x
,
2745 ((term
->dec_om ? term
->marg_t
: 0) +
2746 def(term
->esc_args
[0], 1) - 1),
2747 (term
->dec_om ?
2 : 0));
2748 term
->seen_disp_event
= TRUE
;
2751 case 'f': /* HVP: set horz and vert posns at once */
2752 if (term
->esc_nargs
< 2)
2753 term
->esc_args
[1] = ARG_DEFAULT
;
2754 move(term
, def(term
->esc_args
[1], 1) - 1,
2755 ((term
->dec_om ? term
->marg_t
: 0) +
2756 def(term
->esc_args
[0], 1) - 1),
2757 (term
->dec_om ?
2 : 0));
2758 term
->seen_disp_event
= TRUE
;
2760 case 'J': /* ED: erase screen or parts of it */
2762 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2765 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
2768 term
->seen_disp_event
= TRUE
;
2770 case 'K': /* EL: erase line or parts of it */
2772 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2775 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
2777 term
->seen_disp_event
= TRUE
;
2779 case 'L': /* IL: insert lines */
2780 compatibility(VT102
);
2781 if (term
->curs
.y
<= term
->marg_b
)
2782 scroll(term
, term
->curs
.y
, term
->marg_b
,
2783 -def(term
->esc_args
[0], 1), FALSE
);
2785 term
->seen_disp_event
= TRUE
;
2787 case 'M': /* DL: delete lines */
2788 compatibility(VT102
);
2789 if (term
->curs
.y
<= term
->marg_b
)
2790 scroll(term
, term
->curs
.y
, term
->marg_b
,
2791 def(term
->esc_args
[0], 1),
2794 term
->seen_disp_event
= TRUE
;
2796 case '@': /* ICH: insert chars */
2797 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2798 compatibility(VT102
);
2799 insch(term
, def(term
->esc_args
[0], 1));
2800 term
->seen_disp_event
= TRUE
;
2802 case 'P': /* DCH: delete chars */
2803 compatibility(VT102
);
2804 insch(term
, -def(term
->esc_args
[0], 1));
2805 term
->seen_disp_event
= TRUE
;
2807 case 'c': /* DA: terminal type query */
2808 compatibility(VT100
);
2809 /* This is the response for a VT102 */
2811 ldisc_send(term
->ldisc
, term
->id_string
,
2812 strlen(term
->id_string
), 0);
2814 case 'n': /* DSR: cursor position query */
2816 if (term
->esc_args
[0] == 6) {
2818 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
2820 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
2821 } else if (term
->esc_args
[0] == 5) {
2822 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
2826 case 'h': /* SM: toggle modes to high */
2828 compatibility(VT100
);
2831 for (i
= 0; i
< term
->esc_nargs
; i
++)
2832 toggle_mode(term
, term
->esc_args
[i
],
2833 term
->esc_query
, TRUE
);
2836 case 'i': /* MC: Media copy */
2838 compatibility(VT100
);
2840 if (term
->esc_nargs
!= 1) break;
2841 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
2842 term
->printing
= TRUE
;
2843 term
->only_printing
= !term
->esc_query
;
2844 term
->print_state
= 0;
2845 term_print_setup(term
);
2846 } else if (term
->esc_args
[0] == 4 &&
2848 term_print_finish(term
);
2852 case 'l': /* RM: toggle modes to low */
2854 compatibility(VT100
);
2857 for (i
= 0; i
< term
->esc_nargs
; i
++)
2858 toggle_mode(term
, term
->esc_args
[i
],
2859 term
->esc_query
, FALSE
);
2862 case 'g': /* TBC: clear tabs */
2863 compatibility(VT100
);
2864 if (term
->esc_nargs
== 1) {
2865 if (term
->esc_args
[0] == 0) {
2866 term
->tabs
[term
->curs
.x
] = FALSE
;
2867 } else if (term
->esc_args
[0] == 3) {
2869 for (i
= 0; i
< term
->cols
; i
++)
2870 term
->tabs
[i
] = FALSE
;
2874 case 'r': /* DECSTBM: set scroll margins */
2875 compatibility(VT100
);
2876 if (term
->esc_nargs
<= 2) {
2878 top
= def(term
->esc_args
[0], 1) - 1;
2879 bot
= (term
->esc_nargs
<= 1
2880 || term
->esc_args
[1] == 0 ?
2882 def(term
->esc_args
[1], term
->rows
)) - 1;
2883 if (bot
>= term
->rows
)
2884 bot
= term
->rows
- 1;
2885 /* VTTEST Bug 9 - if region is less than 2 lines
2886 * don't change region.
2888 if (bot
- top
> 0) {
2893 * I used to think the cursor should be
2894 * placed at the top of the newly marginned
2895 * area. Apparently not: VMS TPU falls over
2898 * Well actually it should for
2901 term
->curs
.y
= (term
->dec_om ?
2904 term
->seen_disp_event
= TRUE
;
2908 case 'm': /* SGR: set graphics rendition */
2911 * A VT100 without the AVO only had one
2912 * attribute, either underline or
2913 * reverse video depending on the
2914 * cursor type, this was selected by
2918 * This is sometimes DIM, eg on the
2921 * This is sometimes INVIS various ANSI.
2923 * This like 22 disables BOLD, DIM and INVIS
2925 * The ANSI colours appear on any
2926 * terminal that has colour (obviously)
2927 * but the interaction between sgr0 and
2928 * the colours varies but is usually
2929 * related to the background colour
2930 * erase item. The interaction between
2931 * colour attributes and the mono ones
2932 * is also very implementation
2935 * The 39 and 49 attributes are likely
2936 * to be unimplemented.
2939 for (i
= 0; i
< term
->esc_nargs
; i
++) {
2940 switch (def(term
->esc_args
[i
], 0)) {
2941 case 0: /* restore defaults */
2942 term
->curr_attr
= term
->default_attr
;
2944 case 1: /* enable bold */
2945 compatibility(VT100AVO
);
2946 term
->curr_attr
|= ATTR_BOLD
;
2948 case 21: /* (enable double underline) */
2949 compatibility(OTHER
);
2950 case 4: /* enable underline */
2951 compatibility(VT100AVO
);
2952 term
->curr_attr
|= ATTR_UNDER
;
2954 case 5: /* enable blink */
2955 compatibility(VT100AVO
);
2956 term
->curr_attr
|= ATTR_BLINK
;
2958 case 6: /* SCO light bkgrd */
2959 compatibility(SCOANSI
);
2960 term
->blink_is_real
= FALSE
;
2961 term
->curr_attr
|= ATTR_BLINK
;
2963 case 7: /* enable reverse video */
2964 term
->curr_attr
|= ATTR_REVERSE
;
2966 case 10: /* SCO acs off */
2967 compatibility(SCOANSI
);
2968 if (term
->cfg
.no_remote_charset
) break;
2969 term
->sco_acs
= 0; break;
2970 case 11: /* SCO acs on */
2971 compatibility(SCOANSI
);
2972 if (term
->cfg
.no_remote_charset
) break;
2973 term
->sco_acs
= 1; break;
2974 case 12: /* SCO acs on, |0x80 */
2975 compatibility(SCOANSI
);
2976 if (term
->cfg
.no_remote_charset
) break;
2977 term
->sco_acs
= 2; break;
2978 case 22: /* disable bold */
2979 compatibility2(OTHER
, VT220
);
2980 term
->curr_attr
&= ~ATTR_BOLD
;
2982 case 24: /* disable underline */
2983 compatibility2(OTHER
, VT220
);
2984 term
->curr_attr
&= ~ATTR_UNDER
;
2986 case 25: /* disable blink */
2987 compatibility2(OTHER
, VT220
);
2988 term
->curr_attr
&= ~ATTR_BLINK
;
2990 case 27: /* disable reverse video */
2991 compatibility2(OTHER
, VT220
);
2992 term
->curr_attr
&= ~ATTR_REVERSE
;
3003 term
->curr_attr
&= ~ATTR_FGMASK
;
3005 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3015 /* xterm-style bright foreground */
3016 term
->curr_attr
&= ~ATTR_FGMASK
;
3018 ((term
->esc_args
[i
] - 90 + 16)
3021 case 39: /* default-foreground */
3022 term
->curr_attr
&= ~ATTR_FGMASK
;
3023 term
->curr_attr
|= ATTR_DEFFG
;
3034 term
->curr_attr
&= ~ATTR_BGMASK
;
3036 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3046 /* xterm-style bright background */
3047 term
->curr_attr
&= ~ATTR_BGMASK
;
3049 ((term
->esc_args
[i
] - 100 + 16)
3052 case 49: /* default-background */
3053 term
->curr_attr
&= ~ATTR_BGMASK
;
3054 term
->curr_attr
|= ATTR_DEFBG
;
3058 set_erase_char(term
);
3061 case 's': /* save cursor */
3062 save_cursor(term
, TRUE
);
3064 case 'u': /* restore cursor */
3065 save_cursor(term
, FALSE
);
3066 term
->seen_disp_event
= TRUE
;
3068 case 't': /* DECSLPP: set page size - ie window height */
3070 * VT340/VT420 sequence DECSLPP, DEC only allows values
3071 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3072 * illegal values (eg first arg 1..9) for window changing
3075 if (term
->esc_nargs
<= 1
3076 && (term
->esc_args
[0] < 1 ||
3077 term
->esc_args
[0] >= 24)) {
3078 compatibility(VT340TEXT
);
3079 if (!term
->cfg
.no_remote_resize
)
3080 request_resize(term
->frontend
, term
->cols
,
3081 def(term
->esc_args
[0], 24));
3083 } else if (term
->esc_nargs
>= 1 &&
3084 term
->esc_args
[0] >= 1 &&
3085 term
->esc_args
[0] < 24) {
3086 compatibility(OTHER
);
3088 switch (term
->esc_args
[0]) {
3092 set_iconic(term
->frontend
, FALSE
);
3095 set_iconic(term
->frontend
, TRUE
);
3098 if (term
->esc_nargs
>= 3) {
3099 if (!term
->cfg
.no_remote_resize
)
3100 move_window(term
->frontend
,
3101 def(term
->esc_args
[1], 0),
3102 def(term
->esc_args
[2], 0));
3106 /* We should resize the window to a given
3107 * size in pixels here, but currently our
3108 * resizing code isn't healthy enough to
3113 set_zorder(term
->frontend
, TRUE
);
3116 /* move to bottom */
3117 set_zorder(term
->frontend
, FALSE
);
3120 refresh_window(term
->frontend
);
3123 if (term
->esc_nargs
>= 3) {
3124 if (!term
->cfg
.no_remote_resize
)
3125 request_resize(term
->frontend
,
3126 def(term
->esc_args
[2], term
->cfg
.width
),
3127 def(term
->esc_args
[1], term
->cfg
.height
));
3131 if (term
->esc_nargs
>= 2)
3132 set_zoomed(term
->frontend
,
3138 ldisc_send(term
->ldisc
,
3139 is_iconic(term
->frontend
) ?
3140 "\033[1t" : "\033[2t", 4, 0);
3144 get_window_pos(term
->frontend
, &x
, &y
);
3145 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3146 ldisc_send(term
->ldisc
, buf
, len
, 0);
3151 get_window_pixels(term
->frontend
, &x
, &y
);
3152 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
3153 ldisc_send(term
->ldisc
, buf
, len
, 0);
3158 len
= sprintf(buf
, "\033[8;%d;%dt",
3159 term
->rows
, term
->cols
);
3160 ldisc_send(term
->ldisc
, buf
, len
, 0);
3165 * Hmmm. Strictly speaking we
3166 * should return `the size of the
3167 * screen in characters', but
3168 * that's not easy: (a) window
3169 * furniture being what it is it's
3170 * hard to compute, and (b) in
3171 * resize-font mode maximising the
3172 * window wouldn't change the
3173 * number of characters. *shrug*. I
3174 * think we'll ignore it for the
3175 * moment and see if anyone
3176 * complains, and then ask them
3177 * what they would like it to do.
3182 !term
->cfg
.no_remote_qtitle
) {
3183 p
= get_window_title(term
->frontend
, TRUE
);
3185 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3186 ldisc_send(term
->ldisc
, p
, len
, 0);
3187 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3192 !term
->cfg
.no_remote_qtitle
) {
3193 p
= get_window_title(term
->frontend
,FALSE
);
3195 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3196 ldisc_send(term
->ldisc
, p
, len
, 0);
3197 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3203 case 'S': /* SU: Scroll up */
3204 compatibility(SCOANSI
);
3205 scroll(term
, term
->marg_t
, term
->marg_b
,
3206 def(term
->esc_args
[0], 1), TRUE
);
3208 term
->wrapnext
= FALSE
;
3209 term
->seen_disp_event
= TRUE
;
3211 case 'T': /* SD: Scroll down */
3212 compatibility(SCOANSI
);
3213 scroll(term
, term
->marg_t
, term
->marg_b
,
3214 -def(term
->esc_args
[0], 1), TRUE
);
3216 term
->wrapnext
= FALSE
;
3217 term
->seen_disp_event
= TRUE
;
3219 case ANSI('|', '*'): /* DECSNLS */
3221 * Set number of lines on screen
3222 * VT420 uses VGA like hardware and can
3223 * support any size in reasonable range
3224 * (24..49 AIUI) with no default specified.
3226 compatibility(VT420
);
3227 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3228 if (!term
->cfg
.no_remote_resize
)
3229 request_resize(term
->frontend
, term
->cols
,
3230 def(term
->esc_args
[0],
3235 case ANSI('|', '$'): /* DECSCPP */
3237 * Set number of columns per page
3238 * Docs imply range is only 80 or 132, but
3241 compatibility(VT340TEXT
);
3242 if (term
->esc_nargs
<= 1) {
3243 if (!term
->cfg
.no_remote_resize
)
3244 request_resize(term
->frontend
,
3245 def(term
->esc_args
[0],
3246 term
->cfg
.width
), term
->rows
);
3250 case 'X': /* ECH: write N spaces w/o moving cursor */
3251 /* XXX VTTEST says this is vt220, vt510 manual
3253 compatibility(ANSIMIN
);
3255 int n
= def(term
->esc_args
[0], 1);
3257 termchar
*p
= term
->cpos
;
3258 if (n
> term
->cols
- term
->curs
.x
)
3259 n
= term
->cols
- term
->curs
.x
;
3260 cursplus
= term
->curs
;
3262 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3263 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
3264 check_selection(term
, term
->curs
, cursplus
);
3266 *p
++ = term
->erase_char
;
3267 term
->seen_disp_event
= TRUE
;
3270 case 'x': /* DECREQTPARM: report terminal characteristics */
3271 compatibility(VT100
);
3274 int i
= def(term
->esc_args
[0], 0);
3275 if (i
== 0 || i
== 1) {
3276 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
3278 ldisc_send(term
->ldisc
, buf
, 20, 0);
3282 case 'Z': /* CBT: BackTab for xterm */
3283 compatibility(OTHER
);
3285 int i
= def(term
->esc_args
[0], 1);
3286 pos old_curs
= term
->curs
;
3288 for(;i
>0 && term
->curs
.x
>0; i
--) {
3291 } while (term
->curs
.x
>0 &&
3292 !term
->tabs
[term
->curs
.x
]);
3295 check_selection(term
, old_curs
, term
->curs
);
3298 case ANSI('c', '='): /* Hide or Show Cursor */
3299 compatibility(SCOANSI
);
3300 switch(term
->esc_args
[0]) {
3301 case 0: /* hide cursor */
3302 term
->cursor_on
= FALSE
;
3304 case 1: /* restore cursor */
3305 term
->big_cursor
= FALSE
;
3306 term
->cursor_on
= TRUE
;
3308 case 2: /* block cursor */
3309 term
->big_cursor
= TRUE
;
3310 term
->cursor_on
= TRUE
;
3314 case ANSI('C', '='):
3316 * set cursor start on scanline esc_args[0] and
3317 * end on scanline esc_args[1].If you set
3318 * the bottom scan line to a value less than
3319 * the top scan line, the cursor will disappear.
3321 compatibility(SCOANSI
);
3322 if (term
->esc_nargs
>= 2) {
3323 if (term
->esc_args
[0] > term
->esc_args
[1])
3324 term
->cursor_on
= FALSE
;
3326 term
->cursor_on
= TRUE
;
3329 case ANSI('D', '='):
3330 compatibility(SCOANSI
);
3331 term
->blink_is_real
= FALSE
;
3332 if (term
->esc_args
[0]>=1)
3333 term
->curr_attr
|= ATTR_BLINK
;
3335 term
->curr_attr
&= ~ATTR_BLINK
;
3337 case ANSI('E', '='):
3338 compatibility(SCOANSI
);
3339 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
3341 case ANSI('F', '='): /* set normal foreground */
3342 compatibility(SCOANSI
);
3343 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3345 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3346 ((term
->esc_args
[0] & 0x8) << 1)) <<
3348 term
->curr_attr
&= ~ATTR_FGMASK
;
3349 term
->curr_attr
|= colour
;
3350 term
->default_attr
&= ~ATTR_FGMASK
;
3351 term
->default_attr
|= colour
;
3354 case ANSI('G', '='): /* set normal background */
3355 compatibility(SCOANSI
);
3356 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3358 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3359 ((term
->esc_args
[0] & 0x8) << 1)) <<
3361 term
->curr_attr
&= ~ATTR_BGMASK
;
3362 term
->curr_attr
|= colour
;
3363 term
->default_attr
&= ~ATTR_BGMASK
;
3364 term
->default_attr
|= colour
;
3367 case ANSI('L', '='):
3368 compatibility(SCOANSI
);
3369 term
->use_bce
= (term
->esc_args
[0] <= 0);
3370 set_erase_char(term
);
3372 case ANSI('p', '"'): /* DECSCL: set compat level */
3374 * Allow the host to make this emulator a
3375 * 'perfect' VT102. This first appeared in
3376 * the VT220, but we do need to get back to
3377 * PuTTY mode so I won't check it.
3379 * The arg in 40..42,50 are a PuTTY extension.
3380 * The 2nd arg, 8bit vs 7bit is not checked.
3382 * Setting VT102 mode should also change
3383 * the Fkeys to generate PF* codes as a
3384 * real VT102 has no Fkeys. The VT220 does
3385 * this, F11..F13 become ESC,BS,LF other
3386 * Fkeys send nothing.
3388 * Note ESC c will NOT change this!
3391 switch (term
->esc_args
[0]) {
3393 term
->compatibility_level
&= ~TM_VTXXX
;
3394 term
->compatibility_level
|= TM_VT102
;
3397 term
->compatibility_level
&= ~TM_VTXXX
;
3398 term
->compatibility_level
|= TM_VT220
;
3402 if (term
->esc_args
[0] > 60 &&
3403 term
->esc_args
[0] < 70)
3404 term
->compatibility_level
|= TM_VTXXX
;
3408 term
->compatibility_level
&= TM_VTXXX
;
3411 term
->compatibility_level
= TM_PUTTY
;
3414 term
->compatibility_level
= TM_SCOANSI
;
3418 term
->compatibility_level
= TM_PUTTY
;
3424 /* Change the response to CSI c */
3425 if (term
->esc_args
[0] == 50) {
3428 strcpy(term
->id_string
, "\033[?");
3429 for (i
= 1; i
< term
->esc_nargs
; i
++) {
3431 strcat(term
->id_string
, ";");
3432 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
3433 strcat(term
->id_string
, lbuf
);
3435 strcat(term
->id_string
, "c");
3438 /* Is this a good idea ?
3439 * Well we should do a soft reset at this point ...
3441 if (!has_compat(VT420
) && has_compat(VT100
)) {
3442 if (!term
->cfg
.no_remote_resize
) {
3443 if (term
->reset_132
)
3444 request_resize(132, 24);
3446 request_resize(80, 24);
3454 term
->osc_w
= FALSE
;
3456 case 'P': /* Linux palette sequence */
3457 term
->termstate
= SEEN_OSC_P
;
3458 term
->osc_strlen
= 0;
3460 case 'R': /* Linux palette reset */
3461 palette_reset(term
->frontend
);
3462 term_invalidate(term
);
3463 term
->termstate
= TOPLEVEL
;
3465 case 'W': /* word-set */
3466 term
->termstate
= SEEN_OSC_W
;
3479 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
3483 * Grotty hack to support xterm and DECterm title
3484 * sequences concurrently.
3486 if (term
->esc_args
[0] == 2) {
3487 term
->esc_args
[0] = 1;
3490 /* else fall through */
3492 term
->termstate
= OSC_STRING
;
3493 term
->osc_strlen
= 0;
3498 * This OSC stuff is EVIL. It takes just one character to get into
3499 * sysline mode and it's not initially obvious how to get out.
3500 * So I've added CR and LF as string aborts.
3501 * This shouldn't effect compatibility as I believe embedded
3502 * control characters are supposed to be interpreted (maybe?)
3503 * and they don't display anything useful anyway.
3507 if (c
== '\012' || c
== '\015') {
3508 term
->termstate
= TOPLEVEL
;
3509 } else if (c
== 0234 || c
== '\007') {
3511 * These characters terminate the string; ST and BEL
3512 * terminate the sequence and trigger instant
3513 * processing of it, whereas ESC goes back to SEEN_ESC
3514 * mode unless it is followed by \, in which case it is
3515 * synonymous with ST in the first place.
3518 term
->termstate
= TOPLEVEL
;
3519 } else if (c
== '\033')
3520 term
->termstate
= OSC_MAYBE_ST
;
3521 else if (term
->osc_strlen
< OSC_STR_MAX
)
3522 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
3526 int max
= (term
->osc_strlen
== 0 ?
21 : 16);
3528 if ((int)c
>= '0' && (int)c
<= '9')
3530 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
3532 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
3535 term
->termstate
= TOPLEVEL
;
3538 term
->osc_string
[term
->osc_strlen
++] = val
;
3539 if (term
->osc_strlen
>= 7) {
3540 palette_set(term
->frontend
, term
->osc_string
[0],
3541 term
->osc_string
[1] * 16 + term
->osc_string
[2],
3542 term
->osc_string
[3] * 16 + term
->osc_string
[4],
3543 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
3544 term_invalidate(term
);
3545 term
->termstate
= TOPLEVEL
;
3561 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
3564 term
->termstate
= OSC_STRING
;
3565 term
->osc_strlen
= 0;
3569 term
->termstate
= TOPLEVEL
;
3570 term
->seen_disp_event
= TRUE
;
3573 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
3576 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
3579 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
3582 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
3585 * From the VT100 Manual
3586 * NOTE: The special graphics characters in the VT100
3587 * are different from those in the VT52
3589 * From VT102 manual:
3590 * 137 _ Blank - Same
3591 * 140 ` Reserved - Humm.
3592 * 141 a Solid rectangle - Similar
3593 * 142 b 1/ - Top half of fraction for the
3594 * 143 c 3/ - subscript numbers below.
3597 * 146 f Degrees - Same
3598 * 147 g Plus or minus - Same
3600 * 151 i Ellipsis (dots)
3603 * 154 l Bar at scan 0
3604 * 155 m Bar at scan 1
3605 * 156 n Bar at scan 2
3606 * 157 o Bar at scan 3 - Similar
3607 * 160 p Bar at scan 4 - Similar
3608 * 161 q Bar at scan 5 - Similar
3609 * 162 r Bar at scan 6 - Same
3610 * 163 s Bar at scan 7 - Similar
3625 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
3628 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
3631 move(term
, 0, 0, 0);
3634 if (term
->curs
.y
== 0)
3635 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
3636 else if (term
->curs
.y
> 0)
3639 term
->wrapnext
= FALSE
;
3642 erase_lots(term
, FALSE
, FALSE
, TRUE
);
3646 erase_lots(term
, TRUE
, FALSE
, TRUE
);
3650 /* XXX Print cursor line */
3653 /* XXX Start controller mode */
3656 /* XXX Stop controller mode */
3660 term
->termstate
= VT52_Y1
;
3664 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
3667 term
->app_keypad_keys
= TRUE
;
3670 term
->app_keypad_keys
= FALSE
;
3673 /* XXX This should switch to VT100 mode not current or default
3674 * VT mode. But this will only have effect in a VT220+
3677 term
->vt52_mode
= FALSE
;
3678 term
->blink_is_real
= term
->cfg
.blinktext
;
3682 /* XXX Enter auto print mode */
3685 /* XXX Exit auto print mode */
3688 /* XXX Print screen */
3694 /* compatibility(ATARI) */
3695 move(term
, 0, 0, 0);
3696 erase_lots(term
, FALSE
, FALSE
, TRUE
);
3700 /* compatibility(ATARI) */
3701 if (term
->curs
.y
<= term
->marg_b
)
3702 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
3705 /* compatibility(ATARI) */
3706 if (term
->curs
.y
<= term
->marg_b
)
3707 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
3710 /* compatibility(ATARI) */
3711 term
->termstate
= VT52_FG
;
3714 /* compatibility(ATARI) */
3715 term
->termstate
= VT52_BG
;
3718 /* compatibility(ATARI) */
3719 erase_lots(term
, FALSE
, TRUE
, FALSE
);
3723 /* compatibility(ATARI) */
3724 term
->cursor_on
= TRUE
;
3727 /* compatibility(ATARI) */
3728 term
->cursor_on
= FALSE
;
3730 /* case 'j': Save cursor position - broken on ST */
3731 /* case 'k': Restore cursor position */
3733 /* compatibility(ATARI) */
3734 erase_lots(term
, TRUE
, TRUE
, TRUE
);
3736 term
->wrapnext
= FALSE
;
3740 /* compatibility(ATARI) */
3741 erase_lots(term
, TRUE
, TRUE
, FALSE
);
3744 /* compatibility(ATARI) */
3745 term
->curr_attr
|= ATTR_REVERSE
;
3748 /* compatibility(ATARI) */
3749 term
->curr_attr
&= ~ATTR_REVERSE
;
3751 case 'v': /* wrap Autowrap on - Wyse style */
3752 /* compatibility(ATARI) */
3755 case 'w': /* Autowrap off */
3756 /* compatibility(ATARI) */
3761 /* compatibility(OTHER) */
3762 term
->vt52_bold
= FALSE
;
3763 term
->curr_attr
= ATTR_DEFAULT
;
3764 set_erase_char(term
);
3767 /* compatibility(VI50) */
3768 term
->curr_attr
|= ATTR_UNDER
;
3771 /* compatibility(VI50) */
3772 term
->curr_attr
&= ~ATTR_UNDER
;
3775 /* compatibility(VI50) */
3776 term
->vt52_bold
= TRUE
;
3777 term
->curr_attr
|= ATTR_BOLD
;
3780 /* compatibility(VI50) */
3781 term
->vt52_bold
= FALSE
;
3782 term
->curr_attr
&= ~ATTR_BOLD
;
3788 term
->termstate
= VT52_Y2
;
3789 move(term
, term
->curs
.x
, c
- ' ', 0);
3792 term
->termstate
= TOPLEVEL
;
3793 move(term
, c
- ' ', term
->curs
.y
, 0);
3798 term
->termstate
= TOPLEVEL
;
3799 term
->curr_attr
&= ~ATTR_FGMASK
;
3800 term
->curr_attr
&= ~ATTR_BOLD
;
3801 term
->curr_attr
|= (c
& 0x7) << ATTR_FGSHIFT
;
3802 if ((c
& 0x8) || term
->vt52_bold
)
3803 term
->curr_attr
|= ATTR_BOLD
;
3805 set_erase_char(term
);
3808 term
->termstate
= TOPLEVEL
;
3809 term
->curr_attr
&= ~ATTR_BGMASK
;
3810 term
->curr_attr
&= ~ATTR_BLINK
;
3811 term
->curr_attr
|= (c
& 0x7) << ATTR_BGSHIFT
;
3813 /* Note: bold background */
3815 term
->curr_attr
|= ATTR_BLINK
;
3817 set_erase_char(term
);
3820 default: break; /* placate gcc warning about enum use */
3822 if (term
->selstate
!= NO_SELECTION
) {
3823 pos cursplus
= term
->curs
;
3825 check_selection(term
, term
->curs
, cursplus
);
3829 term_print_flush(term
);
3830 logflush(term
->logctx
);
3834 * To prevent having to run the reasonably tricky bidi algorithm
3835 * too many times, we maintain a cache of the last lineful of data
3836 * fed to the algorithm on each line of the display.
3838 static int term_bidi_cache_hit(Terminal
*term
, int line
,
3839 termchar
*lbefore
, int width
)
3841 if (!term
->pre_bidi_cache
)
3842 return FALSE
; /* cache doesn't even exist yet! */
3844 if (line
>= term
->bidi_cache_size
)
3845 return FALSE
; /* cache doesn't have this many lines */
3847 if (!term
->pre_bidi_cache
[line
])
3848 return FALSE
; /* cache doesn't contain _this_ line */
3850 if (!memcmp(term
->pre_bidi_cache
[line
], lbefore
, width
* TSIZE
))
3851 return TRUE
; /* aha! the line matches the cache */
3853 return FALSE
; /* it didn't match. */
3856 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
3857 termchar
*lafter
, int width
)
3859 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
3860 int j
= term
->bidi_cache_size
;
3861 term
->bidi_cache_size
= line
+1;
3862 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
3863 term
->bidi_cache_size
,
3865 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
3866 term
->bidi_cache_size
,
3868 while (j
< term
->bidi_cache_size
) {
3869 term
->pre_bidi_cache
[j
] = term
->post_bidi_cache
[j
] = NULL
;
3874 sfree(term
->pre_bidi_cache
[line
]);
3875 sfree(term
->post_bidi_cache
[line
]);
3877 term
->pre_bidi_cache
[line
] = snewn(width
, termchar
);
3878 term
->post_bidi_cache
[line
] = snewn(width
, termchar
);
3880 memcpy(term
->pre_bidi_cache
[line
], lbefore
, width
* TSIZE
);
3881 memcpy(term
->post_bidi_cache
[line
], lafter
, width
* TSIZE
);
3885 * Given a context, update the window. Out of paranoia, we don't
3886 * allow WM_PAINT responses to do scrolling optimisations.
3888 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
3890 int i
, it
, j
, our_curs_y
, our_curs_x
;
3894 termchar cursor_background
;
3895 unsigned long ticks
;
3896 #ifdef OPTIMISE_SCROLL
3897 struct scrollregion
*sr
;
3898 #endif /* OPTIMISE_SCROLL */
3900 cursor_background
= term
->basic_erase_char
;
3903 * Check the visual bell state.
3905 if (term
->in_vbell
) {
3906 ticks
= GETTICKCOUNT();
3907 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
3908 term
->in_vbell
= FALSE
;
3911 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
3914 * screen array, disptop, scrtop,
3916 * cfg.blinkpc, blink_is_real, tblinker,
3917 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
3920 /* Has the cursor position or type changed ? */
3921 if (term
->cursor_on
) {
3922 if (term
->has_focus
) {
3923 if (term
->blinker
|| !term
->cfg
.blink_cur
)
3924 cursor
= TATTR_ACTCURS
;
3928 cursor
= TATTR_PASCURS
;
3930 cursor
|= TATTR_RIGHTCURS
;
3933 our_curs_y
= term
->curs
.y
- term
->disptop
;
3936 * Adjust the cursor position in the case where it's
3937 * resting on the right-hand half of a CJK wide character.
3938 * xterm's behaviour here, which seems adequate to me, is
3939 * to display the cursor covering the _whole_ character,
3940 * exactly as if it were one space to the left.
3942 termline
*ldata
= lineptr(term
->curs
.y
);
3943 our_curs_x
= term
->curs
.x
;
3944 if (our_curs_x
> 0 &&
3945 ldata
->chars
[our_curs_x
].chr
== UCSWIDE
)
3951 * If the cursor is not where it was last time we painted, and
3952 * its previous position is visible on screen, invalidate its
3953 * previous position.
3955 if (term
->dispcursy
>= 0 &&
3956 (term
->curstype
!= cursor
||
3957 term
->dispcursy
!= our_curs_y
||
3958 term
->dispcursx
!= our_curs_x
)) {
3959 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
3962 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
3963 dispcurs
[-1].attr
|= ATTR_INVALID
;
3964 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
3965 dispcurs
[1].attr
|= ATTR_INVALID
;
3966 dispcurs
->attr
|= ATTR_INVALID
;
3970 term
->dispcursx
= term
->dispcursy
= -1;
3972 #ifdef OPTIMISE_SCROLL
3974 sr
= term
->scrollhead
;
3976 struct scrollregion
*next
= sr
->next
;
3977 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
3981 term
->scrollhead
= term
->scrolltail
= NULL
;
3982 #endif /* OPTIMISE_SCROLL */
3984 /* The normal screen data */
3985 for (i
= 0; i
< term
->rows
; i
++) {
3988 int dirty_line
, dirty_run
, selected
;
3989 unsigned long attr
= 0, cset
= 0;
3990 int updated_line
= 0;
3993 int last_run_dirty
= 0;
3995 scrpos
.y
= i
+ term
->disptop
;
3996 ldata
= lineptr(scrpos
.y
);
3998 dirty_run
= dirty_line
= (ldata
->lattr
!=
3999 term
->disptext
[i
]->lattr
);
4000 term
->disptext
[i
]->lattr
= ldata
->lattr
;
4002 /* Do Arabic shaping and bidi. */
4003 if(!term
->cfg
.bidi
|| !term
->cfg
.arabicshaping
) {
4005 if (!term_bidi_cache_hit(term
, i
, ldata
->chars
, term
->cols
)) {
4007 for(it
=0; it
<term
->cols
; it
++)
4009 unsigned long uc
= (ldata
->chars
[it
].chr
);
4011 switch (uc
& CSET_MASK
) {
4013 if (!term
->cfg
.rawcnp
) {
4014 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4018 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4021 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4024 switch (uc
& CSET_MASK
) {
4026 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4029 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4033 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4035 term
->wcFrom
[it
].index
= it
;
4039 do_bidi(term
->wcFrom
, term
->cols
);
4041 /* this is saved iff done from inside the shaping */
4042 if(!term
->cfg
.bidi
&& term
->cfg
.arabicshaping
)
4043 for(it
=0; it
<term
->cols
; it
++)
4044 term
->wcTo
[it
] = term
->wcFrom
[it
];
4046 if(!term
->cfg
.arabicshaping
)
4047 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4049 for(it
=0; it
<term
->cols
; it
++)
4051 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4053 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4054 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4056 term_bidi_cache_store(term
, i
, ldata
->chars
,
4057 term
->ltemp
, term
->cols
);
4058 lchars
= term
->ltemp
;
4060 lchars
= term
->post_bidi_cache
[i
];
4063 lchars
= ldata
->chars
;
4065 for (j
= 0; j
< term
->cols
; j
++) {
4066 unsigned long tattr
, tchar
;
4067 termchar
*d
= lchars
+ j
;
4074 switch (tchar
& CSET_MASK
) {
4076 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4079 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4082 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4085 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4088 /* Video reversing things */
4089 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4090 if (term
->seltype
== LEXICOGRAPHIC
)
4091 selected
= (posle(term
->selstart
, scrpos
) &&
4092 poslt(scrpos
, term
->selend
));
4094 selected
= (posPle(term
->selstart
, scrpos
) &&
4095 posPlt(scrpos
, term
->selend
));
4099 ^ (selected ? ATTR_REVERSE
: 0));
4101 /* 'Real' blinking ? */
4102 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4103 if (term
->has_focus
&& term
->tblinker
) {
4104 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4106 tattr
&= ~ATTR_BLINK
;
4110 * Check the font we'll _probably_ be using to see if
4111 * the character is wide when we don't want it to be.
4113 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4114 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4116 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4117 tattr
|= ATTR_NARROW
;
4118 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4119 tattr
|= ATTR_NARROW
;
4121 /* Cursor here ? Save the 'background' */
4122 if (i
== our_curs_y
&& j
== our_curs_x
) {
4123 cursor_background
.chr
= tchar
;
4124 cursor_background
.attr
= tattr
;
4125 term
->dispcursx
= j
;
4126 term
->dispcursy
= i
;
4129 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
4132 break_run
= (((tattr
^ attr
) & term
->attr_mask
) ||
4133 j
- start
>= sizeof(ch
));
4135 /* Special hack for VT100 Linedraw glyphs */
4136 if (tchar
>= 0x23BA && tchar
<= 0x23BD)
4140 * Separate out sequences of characters that have the
4141 * same CSET, if that CSET is a magic one.
4143 if (CSET_OF(tchar
) != cset
)
4146 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
4147 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
4148 term
->disptext
[i
]->chars
[j
].attr
== tattr
)
4150 else if (!dirty_run
&& ccount
== 1)
4155 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
4156 do_text(ctx
, start
, i
, ch
, ccount
, attr
, ldata
->lattr
);
4162 cset
= CSET_OF(tchar
);
4163 if (term
->ucsdata
->dbcs_screenfont
)
4164 last_run_dirty
= dirty_run
;
4165 dirty_run
= dirty_line
;
4168 if (term
->disptext
[i
]->chars
[j
].chr
!= tchar
||
4169 term
->disptext
[i
]->chars
[j
].attr
!= tattr
)
4171 ch
[ccount
++] = (wchar_t) tchar
;
4172 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
4173 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
4175 /* If it's a wide char step along to the next one. */
4176 if (tattr
& ATTR_WIDE
) {
4177 if (++j
< term
->cols
) {
4180 * By construction above, the cursor should not
4181 * be on the right-hand half of this character.
4184 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
4185 if (memcmp(&term
->disptext
[i
]->chars
[j
],
4188 term
->disptext
[i
]->chars
[j
] = *d
;
4192 if (dirty_run
&& ccount
> 0) {
4193 do_text(ctx
, start
, i
, ch
, ccount
, attr
, ldata
->lattr
);
4197 /* Cursor on this line ? (and changed) */
4198 if (i
== our_curs_y
&& (term
->curstype
!= cursor
|| updated_line
)) {
4199 ch
[0] = (wchar_t) cursor_background
.chr
;
4200 attr
= cursor_background
.attr
| cursor
;
4201 do_cursor(ctx
, our_curs_x
, i
, ch
, 1, attr
, ldata
->lattr
);
4202 term
->curstype
= cursor
;
4210 * Flick the switch that says if blinking things should be shown or hidden.
4213 void term_blink(Terminal
*term
, int flg
)
4215 long now
, blink_diff
;
4217 now
= GETTICKCOUNT();
4218 blink_diff
= now
- term
->last_tblink
;
4220 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
4221 if (blink_diff
< 0 || blink_diff
> (TICKSPERSEC
* 9 / 20)) {
4222 term
->last_tblink
= now
;
4223 term
->tblinker
= !term
->tblinker
;
4228 term
->last_blink
= now
;
4232 blink_diff
= now
- term
->last_blink
;
4234 /* Make sure the cursor blinks no faster than system blink rate */
4235 if (blink_diff
>= 0 && blink_diff
< (long) CURSORBLINK
)
4238 term
->last_blink
= now
;
4239 term
->blinker
= !term
->blinker
;
4243 * Invalidate the whole screen so it will be repainted in full.
4245 void term_invalidate(Terminal
*term
)
4249 for (i
= 0; i
< term
->rows
; i
++)
4250 for (j
= 0; j
< term
->cols
; j
++)
4251 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4255 * Paint the window in response to a WM_PAINT message.
4257 void term_paint(Terminal
*term
, Context ctx
,
4258 int left
, int top
, int right
, int bottom
, int immediately
)
4261 if (left
< 0) left
= 0;
4262 if (top
< 0) top
= 0;
4263 if (right
>= term
->cols
) right
= term
->cols
-1;
4264 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
4266 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
4267 if (term
->disptext
[i
]->lattr
== LATTR_NORM
)
4268 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
4269 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4271 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
4272 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4275 /* This should happen soon enough, also for some reason it sometimes
4276 * fails to actually do anything when re-sizing ... painting the wrong
4280 do_paint (term
, ctx
, FALSE
);
4284 * Attempt to scroll the scrollback. The second parameter gives the
4285 * position we want to scroll to; the first is +1 to denote that
4286 * this position is relative to the beginning of the scrollback, -1
4287 * to denote it is relative to the end, and 0 to denote that it is
4288 * relative to the current position.
4290 void term_scroll(Terminal
*term
, int rel
, int where
)
4292 int sbtop
= -sblines(term
);
4293 #ifdef OPTIMISE_SCROLL
4294 int olddisptop
= term
->disptop
;
4296 #endif /* OPTIMISE_SCROLL */
4298 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
4299 if (term
->disptop
< sbtop
)
4300 term
->disptop
= sbtop
;
4301 if (term
->disptop
> 0)
4304 #ifdef OPTIMISE_SCROLL
4305 shift
= (term
->disptop
- olddisptop
);
4306 if (shift
< term
->rows
&& shift
> -term
->rows
)
4307 scroll_display(term
, 0, term
->rows
- 1, shift
);
4308 #endif /* OPTIMISE_SCROLL */
4312 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
4315 wchar_t *wbptr
; /* where next char goes within workbuf */
4317 int wblen
= 0; /* workbuf len */
4318 int buflen
; /* amount of memory allocated to workbuf */
4320 buflen
= 5120; /* Default size */
4321 workbuf
= snewn(buflen
, wchar_t);
4322 wbptr
= workbuf
; /* start filling here */
4323 old_top_x
= top
.x
; /* needed for rect==1 */
4325 while (poslt(top
, bottom
)) {
4327 termline
*ldata
= lineptr(top
.y
);
4331 * nlpos will point at the maximum position on this line we
4332 * should copy up to. So we start it at the end of the
4336 nlpos
.x
= term
->cols
;
4339 * ... move it backwards if there's unused space at the end
4340 * of the line (and also set `nl' if this is the case,
4341 * because in normal selection mode this means we need a
4342 * newline at the end)...
4344 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
4345 while (IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
4348 if (poslt(nlpos
, bottom
))
4350 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
4351 /* Ignore the last char on the line in a WRAPPED2 line. */
4356 * ... and then clip it to the terminal x coordinate if
4357 * we're doing rectangular selection. (In this case we
4358 * still did the above, so that copying e.g. the right-hand
4359 * column from a table doesn't fill with spaces on the
4363 if (nlpos
.x
> bottom
.x
)
4365 nl
= (top
.y
< bottom
.y
);
4368 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
4371 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
4373 wchar_t cbuf
[16], *p
;
4374 int uc
= ldata
->chars
[top
.x
].chr
;
4377 if (uc
== UCSWIDE
) {
4382 switch (uc
& CSET_MASK
) {
4384 if (!term
->cfg
.rawcnp
) {
4385 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4389 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4392 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4395 switch (uc
& CSET_MASK
) {
4397 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4400 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4404 set
= (uc
& CSET_MASK
);
4405 c
= (uc
& ~CSET_MASK
);
4409 if (DIRECT_FONT(uc
)) {
4410 if (c
>= ' ' && c
!= 0x7F) {
4414 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
4416 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
4417 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
4421 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
4425 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
4432 for (p
= cbuf
; *p
; p
++) {
4433 /* Enough overhead for trailing NL and nul */
4434 if (wblen
>= buflen
- 16) {
4436 workbuf
= sresize(workbuf
, buflen
, wchar_t);
4437 wbptr
= workbuf
+ wblen
;
4446 for (i
= 0; i
< sel_nl_sz
; i
++) {
4448 *wbptr
++ = sel_nl
[i
];
4452 top
.x
= rect ? old_top_x
: 0;
4456 #if SELECTION_NUL_TERMINATED
4460 write_clip(term
->frontend
, workbuf
, wblen
, desel
); /* transfer to clipbd */
4461 if (buflen
> 0) /* indicates we allocated this buffer */
4465 void term_copyall(Terminal
*term
)
4469 tree234
*screen
= term
->screen
;
4470 top
.y
= -sblines(term
);
4472 bottom
.y
= find_last_nonempty_line(term
, screen
);
4473 bottom
.x
= term
->cols
;
4474 clipme(term
, top
, bottom
, 0, TRUE
);
4478 * The wordness array is mainly for deciding the disposition of the
4479 * US-ASCII characters.
4481 static int wordtype(Terminal
*term
, int uc
)
4484 int start
, end
, ctype
;
4486 static const struct ucsword ucs_words
[] = {
4492 0x037e, 0x037e, 1}, /* Greek question mark */
4494 0x0387, 0x0387, 1}, /* Greek ano teleia */
4496 0x055a, 0x055f, 1}, /* Armenian punctuation */
4498 0x0589, 0x0589, 1}, /* Armenian full stop */
4500 0x0700, 0x070d, 1}, /* Syriac punctuation */
4502 0x104a, 0x104f, 1}, /* Myanmar punctuation */
4504 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
4506 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
4508 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
4510 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
4512 0x1800, 0x180a, 1}, /* Mongolian punctuation */
4514 0x2000, 0x200a, 0}, /* Various spaces */
4516 0x2070, 0x207f, 2}, /* superscript */
4518 0x2080, 0x208f, 2}, /* subscript */
4520 0x200b, 0x27ff, 1}, /* punctuation and symbols */
4522 0x3000, 0x3000, 0}, /* ideographic space */
4524 0x3001, 0x3020, 1}, /* ideographic punctuation */
4526 0x303f, 0x309f, 3}, /* Hiragana */
4528 0x30a0, 0x30ff, 3}, /* Katakana */
4530 0x3300, 0x9fff, 3}, /* CJK Ideographs */
4532 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
4534 0xf900, 0xfaff, 3}, /* CJK Ideographs */
4536 0xfe30, 0xfe6b, 1}, /* punctuation forms */
4538 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
4540 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
4542 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
4544 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
4546 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
4550 const struct ucsword
*wptr
;
4552 switch (uc
& CSET_MASK
) {
4554 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4557 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4560 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4563 switch (uc
& CSET_MASK
) {
4565 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4568 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4572 /* For DBCS fonts I can't do anything useful. Even this will sometimes
4573 * fail as there's such a thing as a double width space. :-(
4575 if (term
->ucsdata
->dbcs_screenfont
&&
4576 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
4580 return term
->wordness
[uc
];
4582 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
4583 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
4591 * Spread the selection outwards according to the selection mode.
4593 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
4597 int topy
= -sblines(term
);
4599 ldata
= lineptr(p
.y
);
4601 switch (term
->selmode
) {
4604 * In this mode, every character is a separate unit, except
4605 * for runs of spaces at the end of a non-wrapping line.
4607 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
4608 termchar
*q
= ldata
->chars
+ term
->cols
;
4609 while (q
> ldata
->chars
&& IS_SPACE_CHR(q
[-1].chr
))
4611 if (q
== ldata
->chars
+ term
->cols
)
4613 if (p
.x
>= q
- ldata
->chars
)
4614 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
4619 * In this mode, the units are maximal runs of characters
4620 * whose `wordness' has the same value.
4622 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
4625 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
4626 term
->cols
-1 : term
->cols
);
4627 if (p
.x
< maxcols
-1) {
4628 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
4633 if (ldata
->lattr
& LATTR_WRAPPED
) {
4635 ldata2
= lineptr(p
.y
+1);
4636 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
4653 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
4662 ldata2
= lineptr(p
.y
-1);
4663 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
4664 term
->cols
-1 : term
->cols
);
4665 if (ldata2
->lattr
& LATTR_WRAPPED
) {
4666 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
4684 * In this mode, every line is a unit.
4686 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
4694 static void sel_spread(Terminal
*term
)
4696 if (term
->seltype
== LEXICOGRAPHIC
) {
4697 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
4698 decpos(term
->selend
);
4699 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
4700 incpos(term
->selend
);
4704 void term_do_paste(Terminal
*term
)
4709 get_clip(term
->frontend
, &data
, &len
);
4710 if (data
&& len
> 0) {
4713 term_seen_key_event(term
); /* pasted data counts */
4715 if (term
->paste_buffer
)
4716 sfree(term
->paste_buffer
);
4717 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
4718 term
->paste_buffer
= snewn(len
, wchar_t);
4721 while (p
< data
+ len
) {
4722 while (p
< data
+ len
&&
4723 !(p
<= data
+ len
- sel_nl_sz
&&
4724 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
4729 for (i
= 0; i
< p
- q
; i
++) {
4730 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
4734 if (p
<= data
+ len
- sel_nl_sz
&&
4735 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
4736 term
->paste_buffer
[term
->paste_len
++] = '\015';
4742 /* Assume a small paste will be OK in one go. */
4743 if (term
->paste_len
< 256) {
4745 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
4746 if (term
->paste_buffer
)
4747 sfree(term
->paste_buffer
);
4748 term
->paste_buffer
= 0;
4749 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
4752 get_clip(term
->frontend
, NULL
, NULL
);
4755 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
4756 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
4760 int raw_mouse
= (term
->xterm_mouse
&&
4761 !term
->cfg
.no_mouse_rep
&&
4762 !(term
->cfg
.mouse_override
&& shift
));
4763 int default_seltype
;
4767 if (a
== MA_DRAG
&& !raw_mouse
)
4768 term_scroll(term
, 0, -1);
4770 if (y
>= term
->rows
) {
4772 if (a
== MA_DRAG
&& !raw_mouse
)
4773 term_scroll(term
, 0, +1);
4782 if (x
>= term
->cols
)
4785 selpoint
.y
= y
+ term
->disptop
;
4787 ldata
= lineptr(selpoint
.y
);
4788 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
4793 int encstate
= 0, r
, c
;
4800 encstate
= 0x20; /* left button down */
4811 case MBT_WHEEL_DOWN
:
4814 default: break; /* placate gcc warning about enum use */
4818 if (term
->xterm_mouse
== 1)
4824 term
->mouse_is_down
= 0;
4827 if (term
->mouse_is_down
== braw
)
4829 term
->mouse_is_down
= braw
;
4831 default: break; /* placate gcc warning about enum use */
4840 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
4841 ldisc_send(term
->ldisc
, abuf
, 6, 0);
4847 * Set the selection type (rectangular or normal) at the start
4848 * of a selection attempt, from the state of Alt.
4850 if (!alt
^ !term
->cfg
.rect_select
)
4851 default_seltype
= RECTANGULAR
;
4853 default_seltype
= LEXICOGRAPHIC
;
4855 if (term
->selstate
== NO_SELECTION
) {
4856 term
->seltype
= default_seltype
;
4859 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
4861 term
->selstate
= ABOUT_TO
;
4862 term
->seltype
= default_seltype
;
4863 term
->selanchor
= selpoint
;
4864 term
->selmode
= SM_CHAR
;
4865 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
4867 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
4868 term
->selstate
= DRAGGING
;
4869 term
->selstart
= term
->selanchor
= selpoint
;
4870 term
->selend
= term
->selstart
;
4871 incpos(term
->selend
);
4873 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
4874 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
4875 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
4877 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
4878 term
->selstate
== SELECTED
) {
4879 if (term
->seltype
== LEXICOGRAPHIC
) {
4881 * For normal selection, we extend by moving
4882 * whichever end of the current selection is closer
4885 if (posdiff(selpoint
, term
->selstart
) <
4886 posdiff(term
->selend
, term
->selstart
) / 2) {
4887 term
->selanchor
= term
->selend
;
4888 decpos(term
->selanchor
);
4890 term
->selanchor
= term
->selstart
;
4894 * For rectangular selection, we have a choice of
4895 * _four_ places to put selanchor and selpoint: the
4896 * four corners of the selection.
4898 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
4899 term
->selanchor
.x
= term
->selend
.x
-1;
4901 term
->selanchor
.x
= term
->selstart
.x
;
4903 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
4904 term
->selanchor
.y
= term
->selend
.y
;
4906 term
->selanchor
.y
= term
->selstart
.y
;
4908 term
->selstate
= DRAGGING
;
4910 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
4911 term
->selanchor
= selpoint
;
4912 term
->selstate
= DRAGGING
;
4913 if (term
->seltype
== LEXICOGRAPHIC
) {
4915 * For normal selection, we set (selstart,selend) to
4916 * (selpoint,selanchor) in some order.
4918 if (poslt(selpoint
, term
->selanchor
)) {
4919 term
->selstart
= selpoint
;
4920 term
->selend
= term
->selanchor
;
4921 incpos(term
->selend
);
4923 term
->selstart
= term
->selanchor
;
4924 term
->selend
= selpoint
;
4925 incpos(term
->selend
);
4929 * For rectangular selection, we may need to
4930 * interchange x and y coordinates (if the user has
4931 * dragged in the -x and +y directions, or vice versa).
4933 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
4934 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
4935 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
4936 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
4939 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
4941 if (term
->selstate
== DRAGGING
) {
4943 * We've completed a selection. We now transfer the
4944 * data to the clipboard.
4946 clipme(term
, term
->selstart
, term
->selend
,
4947 (term
->seltype
== RECTANGULAR
), FALSE
);
4948 term
->selstate
= SELECTED
;
4950 term
->selstate
= NO_SELECTION
;
4951 } else if (bcooked
== MBT_PASTE
4953 #if MULTICLICK_ONLY_EVENT
4954 || a
== MA_2CLK
|| a
== MA_3CLK
4957 request_paste(term
->frontend
);
4963 void term_key(Terminal
*term
, Key_Sym keysym
, wchar_t *text
, size_t tlen
,
4964 unsigned int modifiers
, unsigned int flags
)
4968 int prependesc
= FALSE
;
4972 fprintf(stderr
, "keysym = %d, %d chars:", keysym
, tlen
);
4973 for (i
= 0; i
< tlen
; i
++)
4974 fprintf(stderr
, " %04x", (unsigned)text
[i
]);
4975 fprintf(stderr
, "\n");
4979 if ((flags
& PKF_REPEAT
) && term
->repeat_off
)
4982 /* Currently, Meta always just prefixes everything with ESC. */
4983 if (modifiers
& PKM_META
)
4985 modifiers
&= ~PKM_META
;
4988 * Alt is only used for Alt+keypad, which isn't supported yet, so
4991 modifiers
&= ~PKM_ALT
;
4993 /* Standard local function keys */
4994 switch (modifiers
& (PKM_SHIFT
| PKM_CONTROL
)) {
4996 if (keysym
== PK_PAGEUP
)
4997 /* scroll up one page */;
4998 if (keysym
== PK_PAGEDOWN
)
4999 /* scroll down on page */;
5000 if (keysym
== PK_INSERT
)
5001 term_do_paste(term
);
5004 if (keysym
== PK_PAGEUP
)
5005 /* scroll up one line */;
5006 if (keysym
== PK_PAGEDOWN
)
5007 /* scroll down one line */;
5008 /* Control-Numlock for app-keypad mode switch */
5009 if (keysym
== PK_PF1
)
5010 term
->app_keypad_keys
^= 1;
5014 if (modifiers
& PKM_ALT
) {
5015 /* Alt+F4 (close) */
5016 /* Alt+Return (full screen) */
5017 /* Alt+Space (system menu) */
5020 if (keysym
== PK_NULL
&& (modifiers
& PKM_CONTROL
) && tlen
== 1 &&
5021 text
[0] >= 0x20 && text
[0] <= 0x7e) {
5022 /* ASCII chars + Control */
5023 if ((text
[0] >= 0x40 && text
[0] <= 0x5f) ||
5024 (text
[0] >= 0x61 && text
[0] <= 0x7a))
5028 * Control-2 should return ^@ (0x00), Control-6 should return
5029 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5030 * the DOS keyboard handling did it, and we have nothing better
5031 * to do with the key combo in question, we'll also map
5032 * Control-Backquote to ^\ (0x1C).
5035 case ' ': text
[0] = 0x00; break;
5036 case '-': text
[0] = 0x1f; break;
5037 case '/': text
[0] = 0x1f; break;
5038 case '2': text
[0] = 0x00; break;
5039 case '3': text
[0] = 0x1b; break;
5040 case '4': text
[0] = 0x1c; break;
5041 case '5': text
[0] = 0x1d; break;
5042 case '6': text
[0] = 0x1e; break;
5043 case '7': text
[0] = 0x1f; break;
5044 case '8': text
[0] = 0x7f; break;
5045 case '`': text
[0] = 0x1c; break;
5050 /* Nethack keypad */
5051 if (term
->cfg
.nethack_keypad
) {
5054 case PK_KP1
: c
= 'b'; break;
5055 case PK_KP2
: c
= 'j'; break;
5056 case PK_KP3
: c
= 'n'; break;
5057 case PK_KP4
: c
= 'h'; break;
5058 case PK_KP5
: c
= '.'; break;
5059 case PK_KP6
: c
= 'l'; break;
5060 case PK_KP7
: c
= 'y'; break;
5061 case PK_KP8
: c
= 'k'; break;
5062 case PK_KP9
: c
= 'u'; break;
5063 default: break; /* else gcc warns `enum value not used' */
5067 if (modifiers
& PKM_CONTROL
)
5069 else if (modifiers
& PKM_SHIFT
)
5077 /* Numeric Keypad */
5078 if (PK_ISKEYPAD(keysym
)) {
5082 * In VT400 mode, PFn always emits an escape sequence. In
5083 * Linux and tilde modes, this only happens in app keypad mode.
5085 if (term
->cfg
.funky_type
== FUNKY_VT400
||
5086 ((term
->cfg
.funky_type
== FUNKY_LINUX
||
5087 term
->cfg
.funky_type
== FUNKY_TILDE
) &&
5088 term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
)) {
5090 case PK_PF1
: xkey
= 'P'; break;
5091 case PK_PF2
: xkey
= 'Q'; break;
5092 case PK_PF3
: xkey
= 'R'; break;
5093 case PK_PF4
: xkey
= 'S'; break;
5094 default: break; /* else gcc warns `enum value not used' */
5097 if (term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
) {
5099 case PK_KP0
: xkey
= 'p'; break;
5100 case PK_KP1
: xkey
= 'q'; break;
5101 case PK_KP2
: xkey
= 'r'; break;
5102 case PK_KP3
: xkey
= 's'; break;
5103 case PK_KP4
: xkey
= 't'; break;
5104 case PK_KP5
: xkey
= 'u'; break;
5105 case PK_KP6
: xkey
= 'v'; break;
5106 case PK_KP7
: xkey
= 'w'; break;
5107 case PK_KP8
: xkey
= 'x'; break;
5108 case PK_KP9
: xkey
= 'y'; break;
5109 case PK_KPDECIMAL
: xkey
= 'n'; break;
5110 case PK_KPENTER
: xkey
= 'M'; break;
5111 default: break; /* else gcc warns `enum value not used' */
5113 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& tlen
> 0) {
5115 * xterm can't see the layout of the keypad, so it has
5116 * to rely on the X keysyms returned by the keys.
5117 * Hence, we look at the strings here, not the PuTTY
5118 * keysyms (which describe the layout).
5122 if (modifiers
& PKM_SHIFT
)
5127 case '/': xkey
= 'o'; break;
5128 case '*': xkey
= 'j'; break;
5129 case '-': xkey
= 'm'; break;
5133 * In all other modes, we try to retain the layout of
5134 * the DEC keypad in application mode.
5138 /* This key covers the '-' and ',' keys on a VT220 */
5139 if (modifiers
& PKM_SHIFT
)
5140 xkey
= 'm'; /* VT220 '-' */
5142 xkey
= 'l'; /* VT220 ',' */
5144 case PK_KPMINUS
: xkey
= 'm'; break;
5145 case PK_KPCOMMA
: xkey
= 'l'; break;
5146 default: break; /* else gcc warns `enum value not used' */
5151 if (term
->vt52_mode
) {
5152 if (xkey
>= 'P' && xkey
<= 'S')
5153 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5155 p
+= sprintf((char *) p
, "\x1B?%c", xkey
);
5157 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5160 /* Not in application mode -- treat the number pad as arrow keys? */
5161 if ((flags
& PKF_NUMLOCK
) == 0) {
5163 case PK_KP0
: keysym
= PK_INSERT
; break;
5164 case PK_KP1
: keysym
= PK_END
; break;
5165 case PK_KP2
: keysym
= PK_DOWN
; break;
5166 case PK_KP3
: keysym
= PK_PAGEDOWN
; break;
5167 case PK_KP4
: keysym
= PK_LEFT
; break;
5168 case PK_KP5
: keysym
= PK_REST
; break;
5169 case PK_KP6
: keysym
= PK_RIGHT
; break;
5170 case PK_KP7
: keysym
= PK_HOME
; break;
5171 case PK_KP8
: keysym
= PK_UP
; break;
5172 case PK_KP9
: keysym
= PK_PAGEUP
; break;
5173 default: break; /* else gcc warns `enum value not used' */
5178 /* Miscellaneous keys */
5185 *p
++ = (term
->cfg
.bksp_is_delete ?
0x7F : 0x08);
5186 else if (modifiers
== PKM_SHIFT
)
5187 /* We do the opposite of what is configured */
5188 *p
++ = (term
->cfg
.bksp_is_delete ?
0x08 : 0x7F);
5194 else if (modifiers
== PKM_SHIFT
)
5195 *p
++ = 0x1B, *p
++ = '[', *p
++ = 'Z';
5198 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5200 if (modifiers
== PKM_CONTROL
)
5205 case PK_KPENTER
: /* Odd keypad modes handled above */
5206 if (modifiers
== 0) {
5208 if (term
->cr_lf_return
)
5212 default: break; /* else gcc warns `enum value not used' */
5215 /* SCO function keys and editing keys */
5216 if (term
->cfg
.funky_type
== FUNKY_SCO
) {
5217 if (PK_ISFKEY(keysym
) && keysym
<= PK_F12
) {
5218 static char const codes
[] =
5219 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5220 int index
= keysym
- PK_F1
;
5222 if (modifiers
& PKM_SHIFT
) index
+= 12;
5223 if (modifiers
& PKM_CONTROL
) index
+= 24;
5224 p
+= sprintf((char *) p
, "\x1B[%c", codes
[index
]);
5227 if (PK_ISEDITING(keysym
)) {
5231 case PK_DELETE
: *p
++ = 0x7f; goto done
;
5232 case PK_HOME
: xkey
= 'H'; break;
5233 case PK_INSERT
: xkey
= 'L'; break;
5234 case PK_END
: xkey
= 'F'; break;
5235 case PK_PAGEUP
: xkey
= 'I'; break;
5236 case PK_PAGEDOWN
: xkey
= 'G'; break;
5237 default: break; /* else gcc warns `enum value not used' */
5239 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
5243 if (PK_ISEDITING(keysym
) && (modifiers
& PKM_SHIFT
) == 0) {
5246 if (term
->cfg
.funky_type
== FUNKY_XTERM
) {
5247 /* Xterm shuffles these keys, apparently. */
5249 case PK_HOME
: keysym
= PK_INSERT
; break;
5250 case PK_INSERT
: keysym
= PK_HOME
; break;
5251 case PK_DELETE
: keysym
= PK_END
; break;
5252 case PK_END
: keysym
= PK_PAGEUP
; break;
5253 case PK_PAGEUP
: keysym
= PK_DELETE
; break;
5254 case PK_PAGEDOWN
: keysym
= PK_PAGEDOWN
; break;
5255 default: break; /* else gcc warns `enum value not used' */
5260 if (term
->cfg
.rxvt_homeend
&&
5261 (keysym
== PK_HOME
|| keysym
== PK_END
)) {
5262 p
+= sprintf((char *) p
, keysym
== PK_HOME ?
"\x1B[H" : "\x1BOw");
5266 if (term
->vt52_mode
) {
5270 * A real VT52 doesn't have these, and a VT220 doesn't
5271 * send anything for them in VT52 mode.
5274 case PK_HOME
: xkey
= 'H'; break;
5275 case PK_INSERT
: xkey
= 'L'; break;
5276 case PK_DELETE
: xkey
= 'M'; break;
5277 case PK_END
: xkey
= 'E'; break;
5278 case PK_PAGEUP
: xkey
= 'I'; break;
5279 case PK_PAGEDOWN
: xkey
= 'G'; break;
5280 default: xkey
=0; break; /* else gcc warns `enum value not used'*/
5282 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5287 case PK_HOME
: code
= 1; break;
5288 case PK_INSERT
: code
= 2; break;
5289 case PK_DELETE
: code
= 3; break;
5290 case PK_END
: code
= 4; break;
5291 case PK_PAGEUP
: code
= 5; break;
5292 case PK_PAGEDOWN
: code
= 6; break;
5293 default: code
= 0; break; /* else gcc warns `enum value not used' */
5295 p
+= sprintf((char *) p
, "\x1B[%d~", code
);
5299 if (PK_ISFKEY(keysym
)) {
5300 /* Map Shift+F1-F10 to F11-F20 */
5301 if (keysym
>= PK_F1
&& keysym
<= PK_F10
&& (modifiers
& PKM_SHIFT
))
5303 if ((term
->vt52_mode
|| term
->cfg
.funky_type
== FUNKY_VT100P
) &&
5305 /* XXX This overrides the XTERM/VT52 mode below */
5307 if (keysym
>= PK_F6
) offt
++;
5308 if (keysym
>= PK_F12
) offt
++;
5309 p
+= sprintf((char *) p
, term
->vt52_mode ?
"\x1B%c" : "\x1BO%c",
5310 'P' + keysym
- PK_F1
- offt
);
5313 if (term
->cfg
.funky_type
== FUNKY_LINUX
&& keysym
<= PK_F5
) {
5314 p
+= sprintf((char *) p
, "\x1B[[%c", 'A' + keysym
- PK_F1
);
5317 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& keysym
<= PK_F4
) {
5318 if (term
->vt52_mode
)
5319 p
+= sprintf((char *) p
, "\x1B%c", 'P' + keysym
- PK_F1
);
5321 p
+= sprintf((char *) p
, "\x1BO%c", 'P' + keysym
- PK_F1
);
5324 p
+= sprintf((char *) p
, "\x1B[%d~", 11 + keysym
- PK_F1
);
5328 if (PK_ISCURSOR(keysym
)) {
5332 case PK_UP
: xkey
= 'A'; break;
5333 case PK_DOWN
: xkey
= 'B'; break;
5334 case PK_RIGHT
: xkey
= 'C'; break;
5335 case PK_LEFT
: xkey
= 'D'; break;
5336 case PK_REST
: xkey
= 'G'; break; /* centre key on number pad */
5337 default: xkey
= 0; break; /* else gcc warns `enum value not used' */
5339 if (term
->vt52_mode
)
5340 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5342 int app_flg
= (term
->app_cursor_keys
&& !term
->cfg
.no_applic_c
);
5344 /* Useful mapping of Ctrl-arrows */
5345 if (modifiers
== PKM_CONTROL
)
5349 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5351 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
5357 if (p
> output
|| tlen
> 0) {
5359 * Interrupt an ongoing paste. I'm not sure
5360 * this is sensible, but for the moment it's
5361 * preferable to having to faff about buffering
5367 * We need not bother about stdin backlogs
5368 * here, because in GUI PuTTY we can't do
5369 * anything about it anyway; there's no means
5370 * of asking Windows to hold off on KEYDOWN
5371 * messages. We _have_ to buffer everything
5374 term_seen_key_event(term
);
5378 fprintf(stderr
, "sending ESC\n");
5380 ldisc_send(term
->ldisc
, "\x1b", 1, 1);
5385 fprintf(stderr
, "sending %d bytes:", p
- output
);
5386 for (i
= 0; i
< p
- output
; i
++)
5387 fprintf(stderr
, " %02x", output
[i
]);
5388 fprintf(stderr
, "\n");
5390 ldisc_send(term
->ldisc
, output
, p
- output
, 1);
5391 } else if (tlen
> 0) {
5393 fprintf(stderr
, "sending %d unichars:", tlen
);
5394 for (i
= 0; i
< tlen
; i
++)
5395 fprintf(stderr
, " %04x", (unsigned) text
[i
]);
5396 fprintf(stderr
, "\n");
5398 luni_send(term
->ldisc
, text
, tlen
, 1);
5403 void term_nopaste(Terminal
*term
)
5405 if (term
->paste_len
== 0)
5407 sfree(term
->paste_buffer
);
5408 term
->paste_buffer
= NULL
;
5409 term
->paste_len
= 0;
5412 int term_paste_pending(Terminal
*term
)
5414 return term
->paste_len
!= 0;
5417 void term_paste(Terminal
*term
)
5419 long now
, paste_diff
;
5421 if (term
->paste_len
== 0)
5424 /* Don't wait forever to paste */
5425 if (term
->paste_hold
) {
5426 now
= GETTICKCOUNT();
5427 paste_diff
= now
- term
->last_paste
;
5428 if (paste_diff
>= 0 && paste_diff
< 450)
5431 term
->paste_hold
= 0;
5433 while (term
->paste_pos
< term
->paste_len
) {
5435 while (n
+ term
->paste_pos
< term
->paste_len
) {
5436 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
5440 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
5441 term
->paste_pos
+= n
;
5443 if (term
->paste_pos
< term
->paste_len
) {
5444 term
->paste_hold
= 1;
5448 sfree(term
->paste_buffer
);
5449 term
->paste_buffer
= NULL
;
5450 term
->paste_len
= 0;
5453 static void deselect(Terminal
*term
)
5455 term
->selstate
= NO_SELECTION
;
5456 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
5459 void term_deselect(Terminal
*term
)
5465 int term_ldisc(Terminal
*term
, int option
)
5467 if (option
== LD_ECHO
)
5468 return term
->term_echoing
;
5469 if (option
== LD_EDIT
)
5470 return term
->term_editing
;
5474 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
5476 bufchain_add(&term
->inbuf
, data
, len
);
5478 if (!term
->in_term_out
) {
5479 term
->in_term_out
= TRUE
;
5480 term_blink(term
, 1);
5482 term
->in_term_out
= FALSE
;
5486 * term_out() always completely empties inbuf. Therefore,
5487 * there's no reason at all to return anything other than zero
5488 * from this function, because there _can't_ be a question of
5489 * the remote side needing to wait until term_out() has cleared
5492 * This is a slightly suboptimal way to deal with SSH2 - in
5493 * principle, the window mechanism would allow us to continue
5494 * to accept data on forwarded ports and X connections even
5495 * while the terminal processing was going slowly - but we
5496 * can't do the 100% right thing without moving the terminal
5497 * processing into a separate thread, and that might hurt
5498 * portability. So we manage stdout buffering the old SSH1 way:
5499 * if the terminal processing goes slowly, the whole SSH
5500 * connection stops accepting data until it's ready.
5502 * In practice, I can't imagine this causing serious trouble.
5507 void term_provide_logctx(Terminal
*term
, void *logctx
)
5509 term
->logctx
= logctx
;