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
)
122 static void unlineptr(termline
*line
)
129 * Compress and decompress a termline into an RLE-based format for
130 * storing in scrollback. (Since scrollback almost never needs to
131 * be modified and exists in huge quantities, this is a sensible
132 * tradeoff, particularly since it allows us to continue adding
133 * features to the main termchar structure without proportionally
134 * bloating the terminal emulator's memory footprint unless those
135 * features are in constant use.)
141 static void add(struct buf
*b
, unsigned char c
)
143 if (b
->len
>= b
->size
) {
144 b
->size
= (b
->len
* 3 / 2) + 512;
145 b
->data
= sresize(b
->data
, b
->size
, unsigned char);
147 b
->data
[b
->len
++] = c
;
149 static int get(struct buf
*b
)
151 return b
->data
[b
->len
++];
153 static void makerle(struct buf
*b
, termline
*ldata
,
154 void (*makeliteral
)(struct buf
*b
, termchar
*c
,
155 unsigned long *state
))
157 int hdrpos
, hdrsize
, n
, prevlen
, prevpos
, thislen
, thispos
, prev2
;
158 termchar
*c
= ldata
->chars
;
159 unsigned long state
= 0, oldstate
;
166 prevlen
= prevpos
= 0;
171 makeliteral(b
, c
++, &state
);
172 thislen
= b
->len
- thispos
;
173 if (thislen
== prevlen
&&
174 !memcmp(b
->data
+ prevpos
, b
->data
+ thispos
, thislen
)) {
176 * This literal precisely matches the previous one.
177 * Turn it into a run if it's worthwhile.
179 * With one-byte literals, it costs us two bytes to
180 * encode a run, plus another byte to write the header
181 * to resume normal output; so a three-element run is
182 * neutral, and anything beyond that is unconditionally
183 * worthwhile. With two-byte literals or more, even a
186 if (thislen
> 1 || prev2
) {
190 * It's worth encoding a run. Start at prevpos,
191 * unless hdrsize==0 in which case we can back up
192 * another one and start by overwriting hdrpos.
195 hdrsize
--; /* remove the literal at prevpos */
199 prevpos
-= prevlen
;/* and possibly another one */
203 assert(prevpos
== hdrpos
+ 1);
205 b
->len
= prevpos
+prevlen
;
207 memmove(b
->data
+ prevpos
+1, b
->data
+ prevpos
, prevlen
);
209 b
->len
= prevpos
+prevlen
+1;
211 * Terminate the previous run of ordinary
214 assert(hdrsize
>= 1 && hdrsize
<= 128);
215 b
->data
[hdrpos
] = hdrsize
- 1;
218 runlen
= prev2 ?
3 : 2;
220 while (n
> 0 && runlen
< 129) {
224 makeliteral(b
, c
, &state
);
225 tmplen
= b
->len
- tmppos
;
227 if (tmplen
!= thislen
||
228 memcmp(b
->data
+ runpos
+1, b
->data
+ tmppos
, tmplen
)) {
230 break; /* run over */
235 assert(runlen
>= 2 && runlen
<= 129);
236 b
->data
[runpos
] = runlen
+ 0x80 - 2;
245 * Just flag that the previous two literals were
246 * identical, in case we find a third identical one
247 * we want to turn into a run.
260 * This character isn't (yet) part of a run. Add it to
264 if (hdrsize
== 128) {
265 b
->data
[hdrpos
] = hdrsize
- 1;
269 prevlen
= prevpos
= 0;
278 assert(hdrsize
<= 128);
279 b
->data
[hdrpos
] = hdrsize
- 1;
284 static void makeliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
287 * My encoding for characters is UTF-8-like, in that it stores
288 * 7-bit ASCII in one byte and uses high-bit-set bytes as
289 * introducers to indicate a longer sequence. However, it's
290 * unlike UTF-8 in that it doesn't need to be able to
291 * resynchronise, and therefore I don't want to waste two bits
292 * per byte on having recognisable continuation characters.
293 * Also I don't want to rule out the possibility that I may one
294 * day use values 0x80000000-0xFFFFFFFF for interesting
295 * purposes, so unlike UTF-8 I need a full 32-bit range.
296 * Accordingly, here is my encoding:
298 * 00000000-0000007F: 0xxxxxxx (but see below)
299 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
300 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
301 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
302 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
304 * (`Z' is like `x' but is always going to be zero since the
305 * values I'm encoding don't go above 2^32. In principle the
306 * five-byte form of the encoding could extend to 2^35, and
307 * there could be six-, seven-, eight- and nine-byte forms as
308 * well to allow up to 64-bit values to be encoded. But that's
309 * completely unnecessary for these purposes!)
311 * The encoding as written above would be very simple, except
312 * that 7-bit ASCII can occur in several different ways in the
313 * terminal data; sometimes it crops up in the D800 page
314 * (CSET_ASCII) but at other times it's in the 0000 page (real
315 * Unicode). Therefore, this encoding is actually _stateful_:
316 * the one-byte encoding of 00-7F actually indicates `reuse the
317 * upper three bytes of the last character', and to encode an
318 * absolute value of 00-7F you need to use the two-byte form
321 if ((c
->chr
& ~0x7F) == *state
) {
322 add(b
, (unsigned char)(c
->chr
& 0x7F));
323 } else if (c
->chr
< 0x4000) {
324 add(b
, (unsigned char)(((c
->chr
>> 8) & 0x3F) | 0x80));
325 add(b
, (unsigned char)(c
->chr
& 0xFF));
326 } else if (c
->chr
< 0x200000) {
327 add(b
, (unsigned char)(((c
->chr
>> 16) & 0x1F) | 0xC0));
328 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
329 add(b
, (unsigned char)(c
->chr
& 0xFF));
330 } else if (c
->chr
< 0x10000000) {
331 add(b
, (unsigned char)(((c
->chr
>> 24) & 0x0F) | 0xE0));
332 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
333 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
334 add(b
, (unsigned char)(c
->chr
& 0xFF));
337 add(b
, (unsigned char)((c
->chr
>> 24) & 0xFF));
338 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
339 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
340 add(b
, (unsigned char)(c
->chr
& 0xFF));
342 *state
= c
->chr
& ~0xFF;
344 static void makeliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
347 * My encoding for attributes is 16-bit-granular and assumes
348 * that the top bit of the word is never required. I either
349 * store a two-byte value with the top bit clear (indicating
350 * just that value), or a four-byte value with the top bit set
351 * (indicating the same value with its top bit clear).
353 if (c
->attr
< 0x8000) {
354 add(b
, (unsigned char)((c
->attr
>> 8) & 0xFF));
355 add(b
, (unsigned char)(c
->attr
& 0xFF));
357 add(b
, (unsigned char)(((c
->attr
>> 24) & 0x7F) | 0x80));
358 add(b
, (unsigned char)((c
->attr
>> 16) & 0xFF));
359 add(b
, (unsigned char)((c
->attr
>> 8) & 0xFF));
360 add(b
, (unsigned char)(c
->attr
& 0xFF));
364 static termline
*decompressline(unsigned char *data
, int *bytes_used
);
366 static unsigned char *compressline(termline
*ldata
)
368 struct buf buffer
= { NULL
, 0, 0 }, *b
= &buffer
;
371 * First, store the column count, 7 bits at a time, least
372 * significant `digit' first, with the high bit set on all but
378 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
381 add(b
, (unsigned char)(n
));
385 * Next store the lattrs; same principle.
388 int n
= ldata
->lattr
;
390 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
393 add(b
, (unsigned char)(n
));
397 * Now we store a sequence of separate run-length encoded
398 * fragments, each containing exactly as many symbols as there
399 * are columns in the ldata.
401 * All of these have a common basic format:
403 * - a byte 00-7F indicates that X+1 literals follow it
404 * - a byte 80-FF indicates that a single literal follows it
405 * and expects to be repeated (X-0x80)+2 times.
407 * The format of the `literals' varies between the fragments.
409 makerle(b
, ldata
, makeliteral_chr
);
410 makerle(b
, ldata
, makeliteral_attr
);
413 * Diagnostics: ensure that the compressed data really does
414 * decompress to the right thing.
416 #ifndef CHECK_SB_COMPRESSION
421 #ifdef DIAGNOSTIC_SB_COMPRESSION
423 for (i
= 0; i
< b
->len
; i
++) {
424 printf(" %02x ", b
->data
[i
]);
429 dcl
= decompressline(b
->data
, &dused
);
430 assert(b
->len
== dused
);
431 assert(ldata
->cols
== dcl
->cols
);
432 assert(ldata
->lattr
== dcl
->lattr
);
433 assert(!memcmp(ldata
->chars
, dcl
->chars
, ldata
->cols
* TSIZE
));
435 #ifdef DIAGNOSTIC_SB_COMPRESSION
436 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
437 ldata
->cols
, 4 * ldata
->cols
, dused
,
438 (double)dused
/ (4 * ldata
->cols
));
446 * Trim the allocated memory so we don't waste any, and return.
448 return sresize(b
->data
, b
->len
, unsigned char);
451 static void readrle(struct buf
*b
, termline
*ldata
,
452 void (*readliteral
)(struct buf
*b
, termchar
*c
,
453 unsigned long *state
))
456 unsigned long state
= 0;
458 while (n
< ldata
->cols
) {
464 int pos
= b
->len
, count
= hdr
+ 2 - 0x80;
466 assert(n
< ldata
->cols
);
468 readliteral(b
, ldata
->chars
+ n
, &state
);
472 /* Just a sequence of consecutive literals. */
476 assert(n
< ldata
->cols
);
477 readliteral(b
, ldata
->chars
+ n
, &state
);
483 assert(n
== ldata
->cols
);
485 static void readliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
490 * 00000000-0000007F: 0xxxxxxx
491 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
492 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
493 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
494 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
499 c
->chr
= byte
| *state
;
500 } else if (byte
< 0xC0) {
501 c
->chr
= (byte
&~ 0xC0) << 8;
503 } else if (byte
< 0xE0) {
504 c
->chr
= (byte
&~ 0xE0) << 16;
505 c
->chr
|= get(b
) << 8;
507 } else if (byte
< 0xF0) {
508 c
->chr
= (byte
&~ 0xF0) << 24;
509 c
->chr
|= get(b
) << 16;
510 c
->chr
|= get(b
) << 8;
513 assert(byte
== 0xF0);
514 c
->chr
= get(b
) << 24;
515 c
->chr
|= get(b
) << 16;
516 c
->chr
|= get(b
) << 8;
519 *state
= c
->chr
& ~0xFF;
521 static void readliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
537 static termline
*decompressline(unsigned char *data
, int *bytes_used
)
539 int ncols
, byte
, shift
;
540 struct buf buffer
, *b
= &buffer
;
547 * First read in the column count.
552 ncols
|= (byte
& 0x7F) << shift
;
554 } while (byte
& 0x80);
557 * Now create the output termline.
559 ldata
= snew(termline
);
560 ldata
->chars
= snewn(ncols
, termchar
);
562 ldata
->temporary
= TRUE
;
565 * Now read in the lattr.
567 ldata
->lattr
= shift
= 0;
570 ldata
->lattr
|= (byte
& 0x7F) << shift
;
572 } while (byte
& 0x80);
575 * Now we read in each of the RLE streams in turn.
577 readrle(b
, ldata
, readliteral_chr
);
578 readrle(b
, ldata
, readliteral_attr
);
580 /* Return the number of bytes read, for diagnostic purposes. */
582 *bytes_used
= b
->len
;
588 * Resize a line to make it `cols' columns wide.
590 static void resizeline(Terminal
*term
, termline
*line
, int cols
)
594 if (line
->cols
!= cols
) {
596 * This line is the wrong length, which probably means it
597 * hasn't been accessed since a resize. Resize it now.
600 line
->chars
= sresize(line
->chars
, cols
, TTYPE
);
602 for (i
= oldlen
; i
< cols
; i
++)
603 line
->chars
[i
] = term
->basic_erase_char
;
608 * Get the number of lines in the scrollback.
610 static int sblines(Terminal
*term
)
612 int sblines
= count234(term
->scrollback
);
613 if (term
->cfg
.erase_to_scrollback
&&
614 term
->alt_which
&& term
->alt_screen
) {
615 sblines
+= term
->alt_sblines
;
621 * Retrieve a line of the screen or of the scrollback, according to
622 * whether the y coordinate is non-negative or negative
625 static termline
*lineptr(Terminal
*term
, int y
, int lineno
, int screen
)
632 whichtree
= term
->screen
;
639 if (term
->cfg
.erase_to_scrollback
&&
640 term
->alt_which
&& term
->alt_screen
) {
641 altlines
= term
->alt_sblines
;
644 whichtree
= term
->scrollback
;
645 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
647 whichtree
= term
->alt_screen
;
648 treeindex
= y
+ term
->alt_sblines
;
649 /* treeindex = y + count234(term->alt_screen); */
652 if (whichtree
== term
->scrollback
) {
653 unsigned char *cline
= index234(whichtree
, treeindex
);
654 line
= decompressline(cline
, NULL
);
656 line
= index234(whichtree
, treeindex
);
659 /* We assume that we don't screw up and retrieve something out of range. */
660 assert(line
!= NULL
);
662 resizeline(term
, line
, term
->cols
);
663 /* FIXME: should we sort the compressed scrollback out here? */
668 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
669 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
672 * Set up power-on settings for the terminal.
674 static void power_on(Terminal
*term
)
676 term
->curs
.x
= term
->curs
.y
= 0;
677 term
->alt_x
= term
->alt_y
= 0;
678 term
->savecurs
.x
= term
->savecurs
.y
= 0;
679 term
->alt_t
= term
->marg_t
= 0;
680 if (term
->rows
!= -1)
681 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
683 term
->alt_b
= term
->marg_b
= 0;
684 if (term
->cols
!= -1) {
686 for (i
= 0; i
< term
->cols
; i
++)
687 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
689 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
690 term
->alt_ins
= term
->insert
= FALSE
;
691 term
->alt_wnext
= term
->wrapnext
= term
->save_wnext
= FALSE
;
692 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
693 term
->alt_cset
= term
->cset
= term
->save_cset
= 0;
694 term
->alt_utf
= term
->utf
= term
->save_utf
= 0;
696 term
->alt_sco_acs
= term
->sco_acs
= term
->save_sco_acs
= 0;
697 term
->cset_attr
[0] = term
->cset_attr
[1] = term
->save_csattr
= CSET_ASCII
;
699 term
->in_vbell
= FALSE
;
701 term
->big_cursor
= 0;
702 term
->default_attr
= term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
703 term
->term_editing
= term
->term_echoing
= FALSE
;
704 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
705 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
706 term
->use_bce
= term
->cfg
.bce
;
707 term
->blink_is_real
= term
->cfg
.blinktext
;
708 term
->erase_char
= term
->basic_erase_char
;
710 term_print_finish(term
);
713 for (i
= 0; i
< 256; i
++)
714 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
717 swap_screen(term
, 1, FALSE
, FALSE
);
718 erase_lots(term
, FALSE
, TRUE
, TRUE
);
719 swap_screen(term
, 0, FALSE
, FALSE
);
720 erase_lots(term
, FALSE
, TRUE
, TRUE
);
725 * Force a screen update.
727 void term_update(Terminal
*term
)
730 ctx
= get_ctx(term
->frontend
);
732 int need_sbar_update
= term
->seen_disp_event
;
733 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
734 term
->disptop
= 0; /* return to main screen */
735 term
->seen_disp_event
= 0;
736 need_sbar_update
= TRUE
;
739 /* Allocate temporary buffers for Arabic shaping and bidi. */
740 if (!term
->cfg
.arabicshaping
|| !term
->cfg
.bidi
)
742 term
->wcFrom
= sresize(term
->wcFrom
, term
->cols
, bidi_char
);
743 term
->ltemp
= sresize(term
->ltemp
, term
->cols
+1, termchar
);
744 term
->wcTo
= sresize(term
->wcTo
, term
->cols
, bidi_char
);
747 if (need_sbar_update
)
749 do_paint(term
, ctx
, TRUE
);
750 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
756 * Called from front end when a keypress occurs, to trigger
757 * anything magical that needs to happen in that situation.
759 void term_seen_key_event(Terminal
*term
)
762 * On any keypress, clear the bell overload mechanism
763 * completely, on the grounds that large numbers of
764 * beeps coming from deliberate key action are likely
765 * to be intended (e.g. beeps from filename completion
766 * blocking repeatedly).
768 term
->beep_overloaded
= FALSE
;
769 while (term
->beephead
) {
770 struct beeptime
*tmp
= term
->beephead
;
771 term
->beephead
= tmp
->next
;
774 term
->beeptail
= NULL
;
778 * Reset the scrollback on keypress, if we're doing that.
780 if (term
->cfg
.scroll_on_key
) {
781 term
->disptop
= 0; /* return to main screen */
782 term
->seen_disp_event
= 1;
787 * Same as power_on(), but an external function.
789 void term_pwron(Terminal
*term
)
792 if (term
->ldisc
) /* cause ldisc to notice changes */
793 ldisc_send(term
->ldisc
, NULL
, 0, 0);
800 static void set_erase_char(Terminal
*term
)
802 term
->erase_char
= term
->basic_erase_char
;
804 term
->erase_char
.attr
= (term
->curr_attr
&
805 (ATTR_FGMASK
| ATTR_BGMASK
));
809 * When the user reconfigures us, we need to check the forbidden-
810 * alternate-screen config option, disable raw mouse mode if the
811 * user has disabled mouse reporting, and abandon a print job if
812 * the user has disabled printing.
814 void term_reconfig(Terminal
*term
, Config
*cfg
)
817 * Before adopting the new config, check all those terminal
818 * settings which control power-on defaults; and if they've
819 * changed, we will modify the current state as well as the
820 * default one. The full list is: Auto wrap mode, DEC Origin
821 * Mode, BCE, blinking text, character classes.
823 int reset_wrap
, reset_decom
, reset_bce
, reset_blink
, reset_charclass
;
826 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
827 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
828 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
829 reset_blink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
831 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
832 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
835 term
->cfg
= *cfg
; /* STRUCTURE COPY */
838 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
840 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
842 term
->use_bce
= term
->cfg
.bce
;
843 set_erase_char(term
);
846 term
->blink_is_real
= term
->cfg
.blinktext
;
848 for (i
= 0; i
< 256; i
++)
849 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
851 if (term
->cfg
.no_alt_screen
)
852 swap_screen(term
, 0, FALSE
, FALSE
);
853 if (term
->cfg
.no_mouse_rep
) {
854 term
->xterm_mouse
= 0;
855 set_raw_mouse_mode(term
->frontend
, 0);
857 if (term
->cfg
.no_remote_charset
) {
858 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
859 term
->sco_acs
= term
->alt_sco_acs
= 0;
862 if (!*term
->cfg
.printer
) {
863 term_print_finish(term
);
868 * Clear the scrollback.
870 void term_clrsb(Terminal
*term
)
874 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
875 sfree(line
); /* this is compressed data, not a termline */
877 term
->tempsblines
= 0;
878 term
->alt_sblines
= 0;
883 * Initialise the terminal.
885 Terminal
*term_init(Config
*mycfg
, struct unicode_data
*ucsdata
,
891 * Allocate a new Terminal structure and initialise the fields
894 term
= snew(Terminal
);
895 term
->frontend
= frontend
;
896 term
->ucsdata
= ucsdata
;
897 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
899 term
->compatibility_level
= TM_PUTTY
;
900 strcpy(term
->id_string
, "\033[?6c");
901 term
->last_blink
= term
->last_tblink
= 0;
902 term
->paste_buffer
= NULL
;
904 term
->last_paste
= 0;
905 bufchain_init(&term
->inbuf
);
906 bufchain_init(&term
->printer_buf
);
907 term
->printing
= term
->only_printing
= FALSE
;
908 term
->print_job
= NULL
;
909 term
->vt52_mode
= FALSE
;
910 term
->cr_lf_return
= FALSE
;
911 term
->seen_disp_event
= FALSE
;
912 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
913 term
->reset_132
= FALSE
;
914 term
->blinker
= term
->tblinker
= 0;
916 term
->repeat_off
= FALSE
;
917 term
->termstate
= TOPLEVEL
;
918 term
->selstate
= NO_SELECTION
;
921 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
922 term
->tempsblines
= 0;
923 term
->alt_sblines
= 0;
925 term
->disptext
= NULL
;
926 term
->dispcursx
= term
->dispcursy
= -1;
929 term
->rows
= term
->cols
= -1;
931 term
->beephead
= term
->beeptail
= NULL
;
932 #ifdef OPTIMISE_SCROLL
933 term
->scrollhead
= term
->scrolltail
= NULL
;
934 #endif /* OPTIMISE_SCROLL */
936 term
->lastbeep
= FALSE
;
937 term
->beep_overloaded
= FALSE
;
938 term
->attr_mask
= 0xffffffff;
939 term
->resize_fn
= NULL
;
940 term
->resize_ctx
= NULL
;
941 term
->in_term_out
= FALSE
;
946 term
->bidi_cache_size
= 0;
947 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
949 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
950 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
955 void term_free(Terminal
*term
)
958 struct beeptime
*beep
;
961 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
962 sfree(line
); /* compressed data, not a termline */
963 freetree234(term
->scrollback
);
964 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
966 freetree234(term
->screen
);
967 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
969 freetree234(term
->alt_screen
);
970 if (term
->disptext
) {
971 for (i
= 0; i
< term
->rows
; i
++)
972 freeline(term
->disptext
[i
]);
974 sfree(term
->disptext
);
975 while (term
->beephead
) {
976 beep
= term
->beephead
;
977 term
->beephead
= beep
->next
;
980 bufchain_clear(&term
->inbuf
);
982 printer_finish_job(term
->print_job
);
983 bufchain_clear(&term
->printer_buf
);
984 sfree(term
->paste_buffer
);
989 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
990 sfree(term
->pre_bidi_cache
[i
]);
991 sfree(term
->post_bidi_cache
[i
]);
993 sfree(term
->pre_bidi_cache
);
994 sfree(term
->post_bidi_cache
);
1000 * Set up the terminal for a given size.
1002 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1005 termline
**newdisp
, *line
;
1008 int save_alt_which
= term
->alt_which
;
1010 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1011 newsavelines
== term
->savelines
)
1012 return; /* nothing to do */
1015 swap_screen(term
, 0, FALSE
, FALSE
);
1017 term
->alt_t
= term
->marg_t
= 0;
1018 term
->alt_b
= term
->marg_b
= newrows
- 1;
1020 if (term
->rows
== -1) {
1021 term
->scrollback
= newtree234(NULL
);
1022 term
->screen
= newtree234(NULL
);
1023 term
->tempsblines
= 0;
1028 * Resize the screen and scrollback. We only need to shift
1029 * lines around within our data structures, because lineptr()
1030 * will take care of resizing each individual line if
1033 * - If the new screen is longer, we shunt lines in from temporary
1034 * scrollback if possible, otherwise we add new blank lines at
1037 * - If the new screen is shorter, we remove any blank lines at
1038 * the bottom if possible, otherwise shunt lines above the cursor
1039 * to scrollback if possible, otherwise delete lines below the
1042 * - Then, if the new scrollback length is less than the
1043 * amount of scrollback we actually have, we must throw some
1046 sblen
= count234(term
->scrollback
);
1047 /* Do this loop to expand the screen if newrows > rows */
1048 assert(term
->rows
== count234(term
->screen
));
1049 while (term
->rows
< newrows
) {
1050 if (term
->tempsblines
> 0) {
1051 unsigned char *cline
;
1052 /* Insert a line from the scrollback at the top of the screen. */
1053 assert(sblen
>= term
->tempsblines
);
1054 cline
= delpos234(term
->scrollback
, --sblen
);
1055 line
= decompressline(cline
, NULL
);
1057 line
->temporary
= FALSE
; /* reconstituted line is now real */
1058 term
->tempsblines
-= 1;
1059 addpos234(term
->screen
, line
, 0);
1061 term
->savecurs
.y
+= 1;
1063 /* Add a new blank line at the bottom of the screen. */
1064 line
= newline(term
, newcols
, FALSE
);
1065 addpos234(term
->screen
, line
, count234(term
->screen
));
1069 /* Do this loop to shrink the screen if newrows < rows */
1070 while (term
->rows
> newrows
) {
1071 if (term
->curs
.y
< term
->rows
- 1) {
1072 /* delete bottom row, unless it contains the cursor */
1073 sfree(delpos234(term
->screen
, term
->rows
- 1));
1075 /* push top row to scrollback */
1076 line
= delpos234(term
->screen
, 0);
1077 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1079 term
->tempsblines
+= 1;
1081 term
->savecurs
.y
-= 1;
1085 assert(term
->rows
== newrows
);
1086 assert(count234(term
->screen
) == newrows
);
1088 /* Delete any excess lines from the scrollback. */
1089 while (sblen
> newsavelines
) {
1090 line
= delpos234(term
->scrollback
, 0);
1094 if (sblen
< term
->tempsblines
)
1095 term
->tempsblines
= sblen
;
1096 assert(count234(term
->scrollback
) <= newsavelines
);
1097 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1100 /* Make a new displayed text buffer. */
1101 newdisp
= snewn(newrows
, termline
*);
1102 for (i
= 0; i
< newrows
; i
++) {
1103 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1104 for (j
= 0; j
< newcols
; j
++)
1105 newdisp
[i
]->chars
[i
].attr
= ATTR_INVALID
;
1107 if (term
->disptext
) {
1108 for (i
= 0; i
< term
->rows
; i
++)
1109 freeline(term
->disptext
[i
]);
1111 sfree(term
->disptext
);
1112 term
->disptext
= newdisp
;
1113 term
->dispcursx
= term
->dispcursy
= -1;
1115 /* Make a new alternate screen. */
1116 newalt
= newtree234(NULL
);
1117 for (i
= 0; i
< newrows
; i
++) {
1118 line
= newline(term
, newcols
, TRUE
);
1119 addpos234(newalt
, line
, i
);
1121 if (term
->alt_screen
) {
1122 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1124 freetree234(term
->alt_screen
);
1126 term
->alt_screen
= newalt
;
1127 term
->alt_sblines
= 0;
1129 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1132 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1133 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1136 /* Check that the cursor positions are still valid. */
1137 if (term
->savecurs
.y
< 0)
1138 term
->savecurs
.y
= 0;
1139 if (term
->savecurs
.y
>= newrows
)
1140 term
->savecurs
.y
= newrows
- 1;
1141 if (term
->curs
.y
< 0)
1143 if (term
->curs
.y
>= newrows
)
1144 term
->curs
.y
= newrows
- 1;
1145 if (term
->curs
.x
>= newcols
)
1146 term
->curs
.x
= newcols
- 1;
1147 term
->alt_x
= term
->alt_y
= 0;
1148 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1150 term
->rows
= newrows
;
1151 term
->cols
= newcols
;
1152 term
->savelines
= newsavelines
;
1155 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1159 if (term
->resize_fn
)
1160 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1164 * Hand a function and context pointer to the terminal which it can
1165 * use to notify a back end of resizes.
1167 void term_provide_resize_fn(Terminal
*term
,
1168 void (*resize_fn
)(void *, int, int),
1171 term
->resize_fn
= resize_fn
;
1172 term
->resize_ctx
= resize_ctx
;
1173 if (term
->cols
> 0 && term
->rows
> 0)
1174 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1177 /* Find the bottom line on the screen that has any content.
1178 * If only the top line has content, returns 0.
1179 * If no lines have content, return -1.
1181 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1184 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1185 termline
*line
= index234(screen
, i
);
1187 for (j
= 0; j
< line
->cols
; j
++) {
1188 if (line
->chars
[j
].chr
!= term
->erase_char
.chr
||
1189 line
->chars
[j
].attr
!= term
->erase_char
.attr
) break;
1191 if (j
!= line
->cols
) break;
1197 * Swap screens. If `reset' is TRUE and we have been asked to
1198 * switch to the alternate screen, we must bring most of its
1199 * configuration from the main screen and erase the contents of the
1200 * alternate screen completely. (This is even true if we're already
1201 * on it! Blame xterm.)
1203 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1209 reset
= FALSE
; /* do no weird resetting if which==0 */
1211 if (which
!= term
->alt_which
) {
1212 term
->alt_which
= which
;
1214 ttr
= term
->alt_screen
;
1215 term
->alt_screen
= term
->screen
;
1217 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1219 if (!reset
&& !keep_cur_pos
)
1220 term
->curs
.x
= term
->alt_x
;
1223 if (!reset
&& !keep_cur_pos
)
1224 term
->curs
.y
= term
->alt_y
;
1227 if (!reset
) term
->marg_t
= term
->alt_t
;
1230 if (!reset
) term
->marg_b
= term
->alt_b
;
1233 if (!reset
) term
->dec_om
= term
->alt_om
;
1236 if (!reset
) term
->wrap
= term
->alt_wrap
;
1239 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1240 term
->alt_wnext
= t
;
1242 if (!reset
) term
->insert
= term
->alt_ins
;
1245 if (!reset
) term
->cset
= term
->alt_cset
;
1248 if (!reset
) term
->utf
= term
->alt_utf
;
1251 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1252 term
->alt_sco_acs
= t
;
1255 if (reset
&& term
->screen
) {
1257 * Yes, this _is_ supposed to honour background-colour-erase.
1259 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1263 * This might not be possible if we're called during
1271 * Update the scroll bar.
1273 static void update_sbar(Terminal
*term
)
1275 int nscroll
= sblines(term
);
1276 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1277 nscroll
+ term
->disptop
, term
->rows
);
1281 * Check whether the region bounded by the two pointers intersects
1282 * the scroll region, and de-select the on-screen selection if so.
1284 static void check_selection(Terminal
*term
, pos from
, pos to
)
1286 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1291 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1292 * for backward.) `sb' is TRUE if the scrolling is permitted to
1293 * affect the scrollback buffer.
1295 * NB this function invalidates all pointers into lines of the
1296 * screen data structures. In particular, you MUST call fix_cpos
1297 * after calling scroll() and before doing anything else that
1298 * uses the cpos shortcut pointer.
1300 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1303 int i
, seltop
, olddisptop
, shift
;
1305 if (topline
!= 0 || term
->alt_which
!= 0)
1308 olddisptop
= term
->disptop
;
1312 line
= delpos234(term
->screen
, botline
);
1313 resizeline(term
, line
, term
->cols
);
1314 for (i
= 0; i
< term
->cols
; i
++)
1315 line
->chars
[i
] = term
->erase_char
;
1316 line
->lattr
= LATTR_NORM
;
1317 addpos234(term
->screen
, line
, topline
);
1319 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
1321 if (term
->selstart
.y
> botline
) {
1322 term
->selstart
.y
= botline
+ 1;
1323 term
->selstart
.x
= 0;
1326 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
1328 if (term
->selend
.y
> botline
) {
1329 term
->selend
.y
= botline
+ 1;
1338 line
= delpos234(term
->screen
, topline
);
1339 if (sb
&& term
->savelines
> 0) {
1340 int sblen
= count234(term
->scrollback
);
1342 * We must add this line to the scrollback. We'll
1343 * remove a line from the top of the scrollback if
1344 * the scrollback is full.
1346 if (sblen
== term
->savelines
) {
1347 unsigned char *cline
;
1350 cline
= delpos234(term
->scrollback
, 0);
1353 term
->tempsblines
+= 1;
1355 addpos234(term
->scrollback
, compressline(line
), sblen
);
1357 line
= newline(term
, term
->cols
, TRUE
);
1360 * If the user is currently looking at part of the
1361 * scrollback, and they haven't enabled any options
1362 * that are going to reset the scrollback as a
1363 * result of this movement, then the chances are
1364 * they'd like to keep looking at the same line. So
1365 * we move their viewpoint at the same rate as the
1366 * scroll, at least until their viewpoint hits the
1367 * top end of the scrollback buffer, at which point
1368 * we don't have the choice any more.
1370 * Thanks to Jan Holmen Holsten for the idea and
1371 * initial implementation.
1373 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
1376 resizeline(term
, line
, term
->cols
);
1377 for (i
= 0; i
< term
->cols
; i
++)
1378 line
->chars
[i
] = term
->erase_char
;
1379 line
->lattr
= LATTR_NORM
;
1380 addpos234(term
->screen
, line
, botline
);
1383 * If the selection endpoints move into the scrollback,
1384 * we keep them moving until they hit the top. However,
1385 * of course, if the line _hasn't_ moved into the
1386 * scrollback then we don't do this, and cut them off
1387 * at the top of the scroll region.
1389 * This applies to selstart and selend (for an existing
1390 * selection), and also selanchor (for one being
1391 * selected as we speak).
1393 seltop
= sb ?
-term
->savelines
: topline
;
1395 if (term
->selstate
!= NO_SELECTION
) {
1396 if (term
->selstart
.y
>= seltop
&&
1397 term
->selstart
.y
<= botline
) {
1399 if (term
->selstart
.y
< seltop
) {
1400 term
->selstart
.y
= seltop
;
1401 term
->selstart
.x
= 0;
1404 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
1406 if (term
->selend
.y
< seltop
) {
1407 term
->selend
.y
= seltop
;
1411 if (term
->selanchor
.y
>= seltop
&&
1412 term
->selanchor
.y
<= botline
) {
1413 term
->selanchor
.y
--;
1414 if (term
->selanchor
.y
< seltop
) {
1415 term
->selanchor
.y
= seltop
;
1416 term
->selanchor
.x
= 0;
1424 #ifdef OPTIMISE_SCROLL
1425 shift
+= term
->disptop
- olddisptop
;
1426 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
1427 scroll_display(term
, topline
, botline
, shift
);
1428 #endif /* OPTIMISE_SCROLL */
1431 #ifdef OPTIMISE_SCROLL
1433 * Add a scroll of a region on the screen into the pending scroll list.
1434 * `lines' is +ve for scrolling forward, -ve for backward.
1436 * If the scroll is on the same area as the last scroll in the list,
1439 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
1441 struct scrollregion
*newscroll
;
1442 if (term
->scrolltail
&&
1443 term
->scrolltail
->topline
== topline
&&
1444 term
->scrolltail
->botline
== botline
) {
1445 term
->scrolltail
->lines
+= lines
;
1447 newscroll
= snew(struct scrollregion
);
1448 newscroll
->topline
= topline
;
1449 newscroll
->botline
= botline
;
1450 newscroll
->lines
= lines
;
1451 newscroll
->next
= NULL
;
1453 if (!term
->scrollhead
)
1454 term
->scrollhead
= newscroll
;
1456 term
->scrolltail
->next
= newscroll
;
1457 term
->scrolltail
= newscroll
;
1462 * Scroll the physical display, and our conception of it in disptext.
1464 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
1466 int distance
, nlines
, i
;
1468 distance
= lines
> 0 ? lines
: -lines
;
1469 nlines
= botline
- topline
+ 1 - distance
;
1471 for (i
= 0; i
< nlines
; i
++)
1472 memcpy(term
->disptext
[start
+i
]->chars
,
1473 term
->disptext
[start
+i
+distance
]->chars
,
1474 term
->cols
* TSIZE
);
1475 if (term
->dispcursy
>= 0 &&
1476 term
->dispcursy
>= topline
+ distance
&&
1477 term
->dispcursy
< topline
+ distance
+ nlines
)
1478 term
->dispcursy
-= distance
;
1479 for (i
= 0; i
< distance
; i
++)
1480 for (j
= 0; j
< term
->cols
; j
++)
1481 term
->disptext
[start
+nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
1483 for (i
= nlines
; i
-- ;)
1484 memcpy(term
->disptext
[start
+i
+distance
]->chars
,
1485 term
->disptext
[start
+i
]->chars
,
1486 term
->cols
* TSIZE
);
1487 if (term
->dispcursy
>= 0 &&
1488 term
->dispcursy
>= topline
&&
1489 term
->dispcursy
< topline
+ nlines
)
1490 term
->dispcursy
+= distance
;
1491 for (i
= 0; i
< distance
; i
++)
1492 for (j
= 0; j
< term
->cols
; j
++)
1493 term
->disptext
[start
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
1495 save_scroll(term
, topline
, botline
, lines
);
1497 #endif /* OPTIMISE_SCROLL */
1500 * Move the cursor to a given position, clipping at boundaries. We
1501 * may or may not want to clip at the scroll margin: marg_clip is 0
1502 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
1503 * even _being_ outside the margins.
1505 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
1509 if (x
>= term
->cols
)
1512 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
1515 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
1521 if (y
>= term
->rows
)
1526 term
->wrapnext
= FALSE
;
1530 * Save or restore the cursor and SGR mode.
1532 static void save_cursor(Terminal
*term
, int save
)
1535 term
->savecurs
= term
->curs
;
1536 term
->save_attr
= term
->curr_attr
;
1537 term
->save_cset
= term
->cset
;
1538 term
->save_utf
= term
->utf
;
1539 term
->save_wnext
= term
->wrapnext
;
1540 term
->save_csattr
= term
->cset_attr
[term
->cset
];
1541 term
->save_sco_acs
= term
->sco_acs
;
1543 term
->curs
= term
->savecurs
;
1544 /* Make sure the window hasn't shrunk since the save */
1545 if (term
->curs
.x
>= term
->cols
)
1546 term
->curs
.x
= term
->cols
- 1;
1547 if (term
->curs
.y
>= term
->rows
)
1548 term
->curs
.y
= term
->rows
- 1;
1550 term
->curr_attr
= term
->save_attr
;
1551 term
->cset
= term
->save_cset
;
1552 term
->utf
= term
->save_utf
;
1553 term
->wrapnext
= term
->save_wnext
;
1555 * wrapnext might reset to False if the x position is no
1556 * longer at the rightmost edge.
1558 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
1559 term
->wrapnext
= FALSE
;
1560 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
1561 term
->sco_acs
= term
->save_sco_acs
;
1563 set_erase_char(term
);
1568 * This function is called before doing _anything_ which affects
1569 * only part of a line of text. It is used to mark the boundary
1570 * between two character positions, and it indicates that some sort
1571 * of effect is going to happen on only one side of that boundary.
1573 * The effect of this function is to check whether a CJK
1574 * double-width character is straddling the boundary, and to remove
1575 * it and replace it with two spaces if so. (Of course, one or
1576 * other of those spaces is then likely to be replaced with
1577 * something else again, as a result of whatever happens next.)
1579 * Also, if the boundary is at the right-hand _edge_ of the screen,
1580 * it implies something deliberate is being done to the rightmost
1581 * column position; hence we must clear LATTR_WRAPPED2.
1583 * The input to the function is the coordinates of the _second_
1584 * character of the pair.
1586 static void check_boundary(Terminal
*term
, int x
, int y
)
1590 /* Validate input coordinates, just in case. */
1591 if (x
== 0 || x
> term
->cols
)
1594 ldata
= scrlineptr(y
);
1595 if (x
== term
->cols
) {
1596 ldata
->lattr
&= ~LATTR_WRAPPED2
;
1598 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
1599 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
1600 ldata
->chars
[x
] = ldata
->chars
[x
-1];
1606 * Erase a large portion of the screen: the whole screen, or the
1607 * whole line, or parts thereof.
1609 static void erase_lots(Terminal
*term
,
1610 int line_only
, int from_begin
, int to_end
)
1614 int erasing_lines_from_top
= 0;
1617 start
.y
= term
->curs
.y
;
1619 end
.y
= term
->curs
.y
+ 1;
1621 erase_lattr
= FALSE
;
1636 if (!from_begin
|| !to_end
)
1637 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1638 check_selection(term
, start
, end
);
1640 /* Clear screen also forces a full window redraw, just in case. */
1641 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
1642 term_invalidate(term
);
1644 /* Lines scrolled away shouldn't be brought back on if the terminal
1646 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
1647 erasing_lines_from_top
= 1;
1649 if (term
->cfg
.erase_to_scrollback
&& erasing_lines_from_top
) {
1650 /* If it's a whole number of lines, starting at the top, and
1651 * we're fully erasing them, erase by scrolling and keep the
1652 * lines in the scrollback. */
1653 int scrolllines
= end
.y
;
1654 if (end
.y
== term
->rows
) {
1655 /* Shrink until we find a non-empty row.*/
1656 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
1658 if (scrolllines
> 0)
1659 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
1662 termline
*ldata
= scrlineptr(start
.y
);
1663 while (poslt(start
, end
)) {
1664 if (start
.x
== term
->cols
) {
1666 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
1668 ldata
->lattr
= LATTR_NORM
;
1670 ldata
->chars
[start
.x
] = term
->erase_char
;
1672 if (incpos(start
) && start
.y
< term
->rows
) {
1673 ldata
= scrlineptr(start
.y
);
1678 /* After an erase of lines from the top of the screen, we shouldn't
1679 * bring the lines back again if the terminal enlarges (since the user or
1680 * application has explictly thrown them away). */
1681 if (erasing_lines_from_top
&& !(term
->alt_which
))
1682 term
->tempsblines
= 0;
1686 * Insert or delete characters within the current line. n is +ve if
1687 * insertion is desired, and -ve for deletion.
1689 static void insch(Terminal
*term
, int n
)
1691 int dir
= (n
< 0 ?
-1 : +1);
1696 n
= (n
< 0 ?
-n
: n
);
1697 if (n
> term
->cols
- term
->curs
.x
)
1698 n
= term
->cols
- term
->curs
.x
;
1699 m
= term
->cols
- term
->curs
.x
- n
;
1700 cursplus
.y
= term
->curs
.y
;
1701 cursplus
.x
= term
->curs
.x
+ n
;
1702 check_selection(term
, term
->curs
, cursplus
);
1703 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
1705 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
1706 ldata
= scrlineptr(term
->curs
.y
);
1708 memmove(ldata
->chars
+ term
->curs
.x
, ldata
->chars
+ term
->curs
.x
+ n
,
1711 ldata
->chars
[term
->curs
.x
+ m
++] = term
->erase_char
;
1713 memmove(ldata
->chars
+ term
->curs
.x
+ n
, ldata
->chars
+ term
->curs
.x
,
1716 ldata
->chars
[term
->curs
.x
+ n
] = term
->erase_char
;
1721 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1722 * whether the mode is a DEC private one or a normal one.)
1724 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
1726 unsigned long ticks
;
1730 case 1: /* DECCKM: application cursor keys */
1731 term
->app_cursor_keys
= state
;
1733 case 2: /* DECANM: VT52 mode */
1734 term
->vt52_mode
= !state
;
1735 if (term
->vt52_mode
) {
1736 term
->blink_is_real
= FALSE
;
1737 term
->vt52_bold
= FALSE
;
1739 term
->blink_is_real
= term
->cfg
.blinktext
;
1742 case 3: /* DECCOLM: 80/132 columns */
1744 if (!term
->cfg
.no_remote_resize
)
1745 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
1746 term
->reset_132
= state
;
1747 term
->alt_t
= term
->marg_t
= 0;
1748 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1749 move(term
, 0, 0, 0);
1750 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1752 case 5: /* DECSCNM: reverse video */
1754 * Toggle reverse video. If we receive an OFF within the
1755 * visual bell timeout period after an ON, we trigger an
1756 * effective visual bell, so that ESC[?5hESC[?5l will
1757 * always be an actually _visible_ visual bell.
1759 ticks
= GETTICKCOUNT();
1760 /* turn off a previous vbell to avoid inconsistencies */
1761 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
1762 term
->in_vbell
= FALSE
;
1763 if (term
->rvideo
&& !state
&& /* we're turning it off... */
1764 (ticks
- term
->rvbell_startpoint
) < VBELL_TIMEOUT
) {/*...soon*/
1765 /* If there's no vbell timeout already, or this one lasts
1766 * longer, replace vbell_timeout with ours. */
1767 if (!term
->in_vbell
||
1768 (term
->rvbell_startpoint
- term
->vbell_startpoint
<
1770 term
->vbell_startpoint
= term
->rvbell_startpoint
;
1771 term
->in_vbell
= TRUE
; /* may clear rvideo but set in_vbell */
1772 } else if (!term
->rvideo
&& state
) {
1773 /* This is an ON, so we notice the time and save it. */
1774 term
->rvbell_startpoint
= ticks
;
1776 term
->rvideo
= state
;
1777 term
->seen_disp_event
= TRUE
;
1781 case 6: /* DECOM: DEC origin mode */
1782 term
->dec_om
= state
;
1784 case 7: /* DECAWM: auto wrap */
1787 case 8: /* DECARM: auto key repeat */
1788 term
->repeat_off
= !state
;
1790 case 10: /* DECEDM: set local edit mode */
1791 term
->term_editing
= state
;
1792 if (term
->ldisc
) /* cause ldisc to notice changes */
1793 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1795 case 25: /* DECTCEM: enable/disable cursor */
1796 compatibility2(OTHER
, VT220
);
1797 term
->cursor_on
= state
;
1798 term
->seen_disp_event
= TRUE
;
1800 case 47: /* alternate screen */
1801 compatibility(OTHER
);
1803 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
1806 case 1000: /* xterm mouse 1 */
1807 term
->xterm_mouse
= state ?
1 : 0;
1808 set_raw_mouse_mode(term
->frontend
, state
);
1810 case 1002: /* xterm mouse 2 */
1811 term
->xterm_mouse
= state ?
2 : 0;
1812 set_raw_mouse_mode(term
->frontend
, state
);
1814 case 1047: /* alternate screen */
1815 compatibility(OTHER
);
1817 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
1820 case 1048: /* save/restore cursor */
1821 if (!term
->cfg
.no_alt_screen
)
1822 save_cursor(term
, state
);
1823 if (!state
) term
->seen_disp_event
= TRUE
;
1825 case 1049: /* cursor & alternate screen */
1826 if (state
&& !term
->cfg
.no_alt_screen
)
1827 save_cursor(term
, state
);
1828 if (!state
) term
->seen_disp_event
= TRUE
;
1829 compatibility(OTHER
);
1831 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
1832 if (!state
&& !term
->cfg
.no_alt_screen
)
1833 save_cursor(term
, state
);
1838 case 4: /* IRM: set insert mode */
1839 compatibility(VT102
);
1840 term
->insert
= state
;
1842 case 12: /* SRM: set echo mode */
1843 term
->term_echoing
= !state
;
1844 if (term
->ldisc
) /* cause ldisc to notice changes */
1845 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1847 case 20: /* LNM: Return sends ... */
1848 term
->cr_lf_return
= state
;
1850 case 34: /* WYULCURM: Make cursor BIG */
1851 compatibility2(OTHER
, VT220
);
1852 term
->big_cursor
= !state
;
1857 * Process an OSC sequence: set window title or icon name.
1859 static void do_osc(Terminal
*term
)
1862 while (term
->osc_strlen
--)
1863 term
->wordness
[(unsigned char)
1864 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
1866 term
->osc_string
[term
->osc_strlen
] = '\0';
1867 switch (term
->esc_args
[0]) {
1870 if (!term
->cfg
.no_remote_wintitle
)
1871 set_icon(term
->frontend
, term
->osc_string
);
1872 if (term
->esc_args
[0] == 1)
1874 /* fall through: parameter 0 means set both */
1877 if (!term
->cfg
.no_remote_wintitle
)
1878 set_title(term
->frontend
, term
->osc_string
);
1885 * ANSI printing routines.
1887 static void term_print_setup(Terminal
*term
)
1889 bufchain_clear(&term
->printer_buf
);
1890 term
->print_job
= printer_start_job(term
->cfg
.printer
);
1892 static void term_print_flush(Terminal
*term
)
1897 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
1898 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1901 printer_job_data(term
->print_job
, data
, len
);
1902 bufchain_consume(&term
->printer_buf
, len
);
1905 static void term_print_finish(Terminal
*term
)
1911 if (!term
->printing
&& !term
->only_printing
)
1912 return; /* we need do nothing */
1914 term_print_flush(term
);
1915 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
1916 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
1918 if (c
== '\033' || c
== '\233') {
1919 bufchain_consume(&term
->printer_buf
, size
);
1922 printer_job_data(term
->print_job
, &c
, 1);
1923 bufchain_consume(&term
->printer_buf
, 1);
1926 printer_finish_job(term
->print_job
);
1927 term
->print_job
= NULL
;
1928 term
->printing
= term
->only_printing
= FALSE
;
1932 * Remove everything currently in `inbuf' and stick it up on the
1933 * in-memory display. There's a big state machine in here to
1934 * process escape sequences...
1936 void term_out(Terminal
*term
)
1940 unsigned char localbuf
[256], *chars
;
1945 chars
= NULL
; /* placate compiler warnings */
1946 while (nchars
> 0 || bufchain_size(&term
->inbuf
) > 0) {
1950 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
1951 if (nchars
> sizeof(localbuf
))
1952 nchars
= sizeof(localbuf
);
1953 memcpy(localbuf
, ret
, nchars
);
1954 bufchain_consume(&term
->inbuf
, nchars
);
1956 assert(chars
!= NULL
);
1962 * Optionally log the session traffic to a file. Useful for
1963 * debugging and possibly also useful for actual logging.
1965 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
1966 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
1972 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1973 * be able to display 8-bit characters, but I'll let that go 'cause
1978 * If we're printing, add the character to the printer
1981 if (term
->printing
) {
1982 bufchain_add(&term
->printer_buf
, &c
, 1);
1985 * If we're in print-only mode, we use a much simpler
1986 * state machine designed only to recognise the ESC[4i
1987 * termination sequence.
1989 if (term
->only_printing
) {
1991 term
->print_state
= 1;
1992 else if (c
== (unsigned char)'\233')
1993 term
->print_state
= 2;
1994 else if (c
== '[' && term
->print_state
== 1)
1995 term
->print_state
= 2;
1996 else if (c
== '4' && term
->print_state
== 2)
1997 term
->print_state
= 3;
1998 else if (c
== 'i' && term
->print_state
== 3)
1999 term
->print_state
= 4;
2001 term
->print_state
= 0;
2002 if (term
->print_state
== 4) {
2003 term_print_finish(term
);
2009 /* First see about all those translations. */
2010 if (term
->termstate
== TOPLEVEL
) {
2012 switch (term
->utf_state
) {
2015 /* UTF-8 must be stateless so we ignore iso2022. */
2016 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2017 c
= term
->ucsdata
->unitab_ctrl
[c
];
2018 else c
= ((unsigned char)c
) | CSET_ASCII
;
2020 } else if ((c
& 0xe0) == 0xc0) {
2021 term
->utf_size
= term
->utf_state
= 1;
2022 term
->utf_char
= (c
& 0x1f);
2023 } else if ((c
& 0xf0) == 0xe0) {
2024 term
->utf_size
= term
->utf_state
= 2;
2025 term
->utf_char
= (c
& 0x0f);
2026 } else if ((c
& 0xf8) == 0xf0) {
2027 term
->utf_size
= term
->utf_state
= 3;
2028 term
->utf_char
= (c
& 0x07);
2029 } else if ((c
& 0xfc) == 0xf8) {
2030 term
->utf_size
= term
->utf_state
= 4;
2031 term
->utf_char
= (c
& 0x03);
2032 } else if ((c
& 0xfe) == 0xfc) {
2033 term
->utf_size
= term
->utf_state
= 5;
2034 term
->utf_char
= (c
& 0x01);
2045 if ((c
& 0xC0) != 0x80) {
2048 term
->utf_state
= 0;
2051 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2052 if (--term
->utf_state
)
2057 /* Is somebody trying to be evil! */
2059 (c
< 0x800 && term
->utf_size
>= 2) ||
2060 (c
< 0x10000 && term
->utf_size
>= 3) ||
2061 (c
< 0x200000 && term
->utf_size
>= 4) ||
2062 (c
< 0x4000000 && term
->utf_size
>= 5))
2065 /* Unicode line separator and paragraph separator are CR-LF */
2066 if (c
== 0x2028 || c
== 0x2029)
2069 /* High controls are probably a Baaad idea too. */
2073 /* The UTF-16 surrogates are not nice either. */
2074 /* The standard give the option of decoding these:
2075 * I don't want to! */
2076 if (c
>= 0xD800 && c
< 0xE000)
2079 /* ISO 10646 characters now limited to UTF-16 range. */
2083 /* This is currently a TagPhobic application.. */
2084 if (c
>= 0xE0000 && c
<= 0xE007F)
2087 /* U+FEFF is best seen as a null. */
2090 /* But U+FFFE is an error. */
2091 if (c
== 0xFFFE || c
== 0xFFFF)
2096 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2097 else if(term
->sco_acs
&&
2098 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2100 if (term
->sco_acs
== 2) c
|= 0x80;
2103 switch (term
->cset_attr
[term
->cset
]) {
2105 * Linedraw characters are different from 'ESC ( B'
2106 * only for a small range. For ones outside that
2107 * range, make sure we use the same font as well as
2108 * the same encoding.
2111 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2112 c
= term
->ucsdata
->unitab_ctrl
[c
];
2114 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2118 /* If UK-ASCII, make the '#' a LineDraw Pound */
2120 c
= '}' | CSET_LINEDRW
;
2123 /*FALLTHROUGH*/ case CSET_ASCII
:
2124 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2125 c
= term
->ucsdata
->unitab_ctrl
[c
];
2127 c
= ((unsigned char) c
) | CSET_ASCII
;
2130 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2136 /* How about C1 controls ? */
2137 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2138 !term
->vt52_mode
&& has_compat(VT220
)) {
2139 term
->termstate
= SEEN_ESC
;
2140 term
->esc_query
= FALSE
;
2141 c
= '@' + (c
& 0x1F);
2144 /* Or the GL control. */
2145 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2146 if (term
->curs
.x
&& !term
->wrapnext
)
2148 term
->wrapnext
= FALSE
;
2150 /* destructive backspace might be disabled */
2151 if (!term
->cfg
.no_dbackspace
) {
2152 term
->cpos
->chr
= ' ' | CSET_ASCII
;
2153 term
->cpos
->attr
= term
->curr_attr
;
2156 /* Or normal C0 controls. */
2157 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2159 case '\005': /* ENQ: terminal type query */
2160 /* Strictly speaking this is VT100 but a VT100 defaults to
2161 * no response. Other terminals respond at their option.
2163 * Don't put a CR in the default string as this tends to
2164 * upset some weird software.
2166 * An xterm returns "xterm" (5 characters)
2168 compatibility(ANSIMIN
);
2170 char abuf
[256], *s
, *d
;
2172 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
; s
++) {
2174 if (*s
>= 'a' && *s
<= 'z')
2175 *d
++ = (*s
- ('a' - 1));
2176 else if ((*s
>= '@' && *s
<= '_') ||
2177 *s
== '?' || (*s
& 0x80))
2182 } else if (*s
== '^') {
2187 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2191 case '\007': /* BEL: Bell */
2193 struct beeptime
*newbeep
;
2194 unsigned long ticks
;
2196 ticks
= GETTICKCOUNT();
2198 if (!term
->beep_overloaded
) {
2199 newbeep
= snew(struct beeptime
);
2200 newbeep
->ticks
= ticks
;
2201 newbeep
->next
= NULL
;
2202 if (!term
->beephead
)
2203 term
->beephead
= newbeep
;
2205 term
->beeptail
->next
= newbeep
;
2206 term
->beeptail
= newbeep
;
2211 * Throw out any beeps that happened more than
2214 while (term
->beephead
&&
2215 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
2216 struct beeptime
*tmp
= term
->beephead
;
2217 term
->beephead
= tmp
->next
;
2219 if (!term
->beephead
)
2220 term
->beeptail
= NULL
;
2224 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
2225 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
2227 * If we're currently overloaded and the
2228 * last beep was more than s seconds ago,
2229 * leave overload mode.
2231 term
->beep_overloaded
= FALSE
;
2232 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
2233 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
2235 * Now, if we have n or more beeps
2236 * remaining in the queue, go into overload
2239 term
->beep_overloaded
= TRUE
;
2241 term
->lastbeep
= ticks
;
2244 * Perform an actual beep if we're not overloaded.
2246 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
2247 beep(term
->frontend
, term
->cfg
.beep
);
2248 if (term
->cfg
.beep
== BELL_VISUAL
) {
2249 term
->in_vbell
= TRUE
;
2250 term
->vbell_startpoint
= ticks
;
2254 term
->seen_disp_event
= TRUE
;
2257 case '\b': /* BS: Back space */
2258 if (term
->curs
.x
== 0 &&
2259 (term
->curs
.y
== 0 || term
->wrap
== 0))
2261 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2262 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2263 else if (term
->wrapnext
)
2264 term
->wrapnext
= FALSE
;
2268 term
->seen_disp_event
= TRUE
;
2270 case '\016': /* LS1: Locking-shift one */
2271 compatibility(VT100
);
2274 case '\017': /* LS0: Locking-shift zero */
2275 compatibility(VT100
);
2278 case '\033': /* ESC: Escape */
2279 if (term
->vt52_mode
)
2280 term
->termstate
= VT52_ESC
;
2282 compatibility(ANSIMIN
);
2283 term
->termstate
= SEEN_ESC
;
2284 term
->esc_query
= FALSE
;
2287 case '\015': /* CR: Carriage return */
2289 term
->wrapnext
= FALSE
;
2291 term
->seen_disp_event
= TRUE
;
2292 term
->paste_hold
= 0;
2294 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2296 case '\014': /* FF: Form feed */
2297 if (has_compat(SCOANSI
)) {
2298 move(term
, 0, 0, 0);
2299 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2301 term
->wrapnext
= FALSE
;
2302 term
->seen_disp_event
= 1;
2305 case '\013': /* VT: Line tabulation */
2306 compatibility(VT100
);
2307 case '\012': /* LF: Line feed */
2308 if (term
->curs
.y
== term
->marg_b
)
2309 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2310 else if (term
->curs
.y
< term
->rows
- 1)
2312 if (term
->cfg
.lfhascr
)
2315 term
->wrapnext
= FALSE
;
2316 term
->seen_disp_event
= 1;
2317 term
->paste_hold
= 0;
2319 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2321 case '\t': /* HT: Character tabulation */
2323 pos old_curs
= term
->curs
;
2324 termline
*ldata
= scrlineptr(term
->curs
.y
);
2328 } while (term
->curs
.x
< term
->cols
- 1 &&
2329 !term
->tabs
[term
->curs
.x
]);
2331 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
2332 if (term
->curs
.x
>= term
->cols
/ 2)
2333 term
->curs
.x
= term
->cols
/ 2 - 1;
2335 if (term
->curs
.x
>= term
->cols
)
2336 term
->curs
.x
= term
->cols
- 1;
2340 check_selection(term
, old_curs
, term
->curs
);
2342 term
->seen_disp_event
= TRUE
;
2346 switch (term
->termstate
) {
2348 /* Only graphic characters get this far;
2349 * ctrls are stripped above */
2350 if (term
->wrapnext
&& term
->wrap
) {
2351 scrlineptr(term
->curs
.y
)->lattr
|= LATTR_WRAPPED
;
2352 if (term
->curs
.y
== term
->marg_b
)
2353 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2354 else if (term
->curs
.y
< term
->rows
- 1)
2358 term
->wrapnext
= FALSE
;
2362 if (term
->selstate
!= NO_SELECTION
) {
2363 pos cursplus
= term
->curs
;
2365 check_selection(term
, term
->curs
, cursplus
);
2367 if (((c
& CSET_MASK
) == CSET_ASCII
|| (c
& CSET_MASK
) == 0) &&
2369 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2375 width
= wcwidth((wchar_t) c
);
2379 * If we're about to display a double-width
2380 * character starting in the rightmost
2381 * column, then we do something special
2382 * instead. We must print a space in the
2383 * last column of the screen, then wrap;
2384 * and we also set LATTR_WRAPPED2 which
2385 * instructs subsequent cut-and-pasting not
2386 * only to splice this line to the one
2387 * after it, but to ignore the space in the
2388 * last character position as well.
2389 * (Because what was actually output to the
2390 * terminal was presumably just a sequence
2391 * of CJK characters, and we don't want a
2392 * space to be pasted in the middle of
2393 * those just because they had the
2394 * misfortune to start in the wrong parity
2395 * column. xterm concurs.)
2397 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2398 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2399 if (term
->curs
.x
== term
->cols
-1) {
2400 term
->cpos
->chr
= CSET_ASCII
| ' ';
2401 term
->cpos
->attr
= term
->curr_attr
;
2402 scrlineptr(term
->curs
.y
)->lattr
|=
2403 LATTR_WRAPPED
| LATTR_WRAPPED2
;
2404 if (term
->curs
.y
== term
->marg_b
)
2405 scroll(term
, term
->marg_t
, term
->marg_b
,
2407 else if (term
->curs
.y
< term
->rows
- 1)
2411 /* Now we must check_boundary again, of course. */
2412 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2413 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2415 term
->cpos
->chr
= c
;
2416 term
->cpos
->attr
= term
->curr_attr
;
2418 term
->cpos
->chr
= UCSWIDE
;
2419 term
->cpos
->attr
= term
->curr_attr
;
2423 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2424 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2425 term
->cpos
->chr
= c
;
2426 term
->cpos
->attr
= term
->curr_attr
;
2434 if (term
->curs
.x
== term
->cols
) {
2437 term
->wrapnext
= TRUE
;
2438 if (term
->wrap
&& term
->vt52_mode
) {
2439 scrlineptr(term
->curs
.y
)->lattr
|= LATTR_WRAPPED
;
2440 if (term
->curs
.y
== term
->marg_b
)
2441 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2442 else if (term
->curs
.y
< term
->rows
- 1)
2446 term
->wrapnext
= FALSE
;
2449 term
->seen_disp_event
= 1;
2454 * This state is virtually identical to SEEN_ESC, with the
2455 * exception that we have an OSC sequence in the pipeline,
2456 * and _if_ we see a backslash, we process it.
2460 term
->termstate
= TOPLEVEL
;
2463 /* else fall through */
2465 if (c
>= ' ' && c
<= '/') {
2466 if (term
->esc_query
)
2467 term
->esc_query
= -1;
2469 term
->esc_query
= c
;
2472 term
->termstate
= TOPLEVEL
;
2473 switch (ANSI(c
, term
->esc_query
)) {
2474 case '[': /* enter CSI mode */
2475 term
->termstate
= SEEN_CSI
;
2476 term
->esc_nargs
= 1;
2477 term
->esc_args
[0] = ARG_DEFAULT
;
2478 term
->esc_query
= FALSE
;
2480 case ']': /* OSC: xterm escape sequences */
2481 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
2482 compatibility(OTHER
);
2483 term
->termstate
= SEEN_OSC
;
2484 term
->esc_args
[0] = 0;
2486 case '7': /* DECSC: save cursor */
2487 compatibility(VT100
);
2488 save_cursor(term
, TRUE
);
2490 case '8': /* DECRC: restore cursor */
2491 compatibility(VT100
);
2492 save_cursor(term
, FALSE
);
2493 term
->seen_disp_event
= TRUE
;
2495 case '=': /* DECKPAM: Keypad application mode */
2496 compatibility(VT100
);
2497 term
->app_keypad_keys
= TRUE
;
2499 case '>': /* DECKPNM: Keypad numeric mode */
2500 compatibility(VT100
);
2501 term
->app_keypad_keys
= FALSE
;
2503 case 'D': /* IND: exactly equivalent to LF */
2504 compatibility(VT100
);
2505 if (term
->curs
.y
== term
->marg_b
)
2506 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2507 else if (term
->curs
.y
< term
->rows
- 1)
2510 term
->wrapnext
= FALSE
;
2511 term
->seen_disp_event
= TRUE
;
2513 case 'E': /* NEL: exactly equivalent to CR-LF */
2514 compatibility(VT100
);
2516 if (term
->curs
.y
== term
->marg_b
)
2517 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2518 else if (term
->curs
.y
< term
->rows
- 1)
2521 term
->wrapnext
= FALSE
;
2522 term
->seen_disp_event
= TRUE
;
2524 case 'M': /* RI: reverse index - backwards LF */
2525 compatibility(VT100
);
2526 if (term
->curs
.y
== term
->marg_t
)
2527 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
2528 else if (term
->curs
.y
> 0)
2531 term
->wrapnext
= FALSE
;
2532 term
->seen_disp_event
= TRUE
;
2534 case 'Z': /* DECID: terminal type query */
2535 compatibility(VT100
);
2537 ldisc_send(term
->ldisc
, term
->id_string
,
2538 strlen(term
->id_string
), 0);
2540 case 'c': /* RIS: restore power-on settings */
2541 compatibility(VT100
);
2543 if (term
->ldisc
) /* cause ldisc to notice changes */
2544 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2545 if (term
->reset_132
) {
2546 if (!term
->cfg
.no_remote_resize
)
2547 request_resize(term
->frontend
, 80, term
->rows
);
2548 term
->reset_132
= 0;
2552 term
->seen_disp_event
= TRUE
;
2554 case 'H': /* HTS: set a tab */
2555 compatibility(VT100
);
2556 term
->tabs
[term
->curs
.x
] = TRUE
;
2559 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
2560 compatibility(VT100
);
2566 for (i
= 0; i
< term
->rows
; i
++) {
2567 ldata
= scrlineptr(i
);
2568 for (j
= 0; j
< term
->cols
; j
++) {
2569 ldata
->chars
[j
] = term
->basic_erase_char
;
2570 ldata
->chars
[j
].chr
= 'E';
2572 ldata
->lattr
= LATTR_NORM
;
2575 term
->seen_disp_event
= TRUE
;
2576 scrtop
.x
= scrtop
.y
= 0;
2578 scrbot
.y
= term
->rows
;
2579 check_selection(term
, scrtop
, scrbot
);
2583 case ANSI('3', '#'):
2584 case ANSI('4', '#'):
2585 case ANSI('5', '#'):
2586 case ANSI('6', '#'):
2587 compatibility(VT100
);
2591 switch (ANSI(c
, term
->esc_query
)) {
2592 case ANSI('3', '#'): /* DECDHL: 2*height, top */
2595 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
2598 case ANSI('5', '#'): /* DECSWL: normal */
2599 nlattr
= LATTR_NORM
;
2601 default: /* case ANSI('6', '#'): DECDWL: 2*width */
2602 nlattr
= LATTR_WIDE
;
2605 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
2608 /* GZD4: G0 designate 94-set */
2609 case ANSI('A', '('):
2610 compatibility(VT100
);
2611 if (!term
->cfg
.no_remote_charset
)
2612 term
->cset_attr
[0] = CSET_GBCHR
;
2614 case ANSI('B', '('):
2615 compatibility(VT100
);
2616 if (!term
->cfg
.no_remote_charset
)
2617 term
->cset_attr
[0] = CSET_ASCII
;
2619 case ANSI('0', '('):
2620 compatibility(VT100
);
2621 if (!term
->cfg
.no_remote_charset
)
2622 term
->cset_attr
[0] = CSET_LINEDRW
;
2624 case ANSI('U', '('):
2625 compatibility(OTHER
);
2626 if (!term
->cfg
.no_remote_charset
)
2627 term
->cset_attr
[0] = CSET_SCOACS
;
2629 /* G1D4: G1-designate 94-set */
2630 case ANSI('A', ')'):
2631 compatibility(VT100
);
2632 if (!term
->cfg
.no_remote_charset
)
2633 term
->cset_attr
[1] = CSET_GBCHR
;
2635 case ANSI('B', ')'):
2636 compatibility(VT100
);
2637 if (!term
->cfg
.no_remote_charset
)
2638 term
->cset_attr
[1] = CSET_ASCII
;
2640 case ANSI('0', ')'):
2641 compatibility(VT100
);
2642 if (!term
->cfg
.no_remote_charset
)
2643 term
->cset_attr
[1] = CSET_LINEDRW
;
2645 case ANSI('U', ')'):
2646 compatibility(OTHER
);
2647 if (!term
->cfg
.no_remote_charset
)
2648 term
->cset_attr
[1] = CSET_SCOACS
;
2650 /* DOCS: Designate other coding system */
2651 case ANSI('8', '%'): /* Old Linux code */
2652 case ANSI('G', '%'):
2653 compatibility(OTHER
);
2654 if (!term
->cfg
.no_remote_charset
)
2657 case ANSI('@', '%'):
2658 compatibility(OTHER
);
2659 if (!term
->cfg
.no_remote_charset
)
2665 term
->termstate
= TOPLEVEL
; /* default */
2667 if (term
->esc_nargs
<= ARGS_MAX
) {
2668 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
2669 term
->esc_args
[term
->esc_nargs
- 1] = 0;
2670 term
->esc_args
[term
->esc_nargs
- 1] =
2671 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
2673 term
->termstate
= SEEN_CSI
;
2674 } else if (c
== ';') {
2675 if (++term
->esc_nargs
<= ARGS_MAX
)
2676 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
2677 term
->termstate
= SEEN_CSI
;
2678 } else if (c
< '@') {
2679 if (term
->esc_query
)
2680 term
->esc_query
= -1;
2682 term
->esc_query
= TRUE
;
2684 term
->esc_query
= c
;
2685 term
->termstate
= SEEN_CSI
;
2687 switch (ANSI(c
, term
->esc_query
)) {
2688 case 'A': /* CUU: move up N lines */
2689 move(term
, term
->curs
.x
,
2690 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
2691 term
->seen_disp_event
= TRUE
;
2693 case 'e': /* VPR: move down N lines */
2694 compatibility(ANSI
);
2696 case 'B': /* CUD: Cursor down */
2697 move(term
, term
->curs
.x
,
2698 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
2699 term
->seen_disp_event
= TRUE
;
2701 case ANSI('c', '>'): /* DA: report xterm version */
2702 compatibility(OTHER
);
2703 /* this reports xterm version 136 so that VIM can
2704 use the drag messages from the mouse reporting */
2706 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
2708 case 'a': /* HPR: move right N cols */
2709 compatibility(ANSI
);
2711 case 'C': /* CUF: Cursor right */
2712 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
2714 term
->seen_disp_event
= TRUE
;
2716 case 'D': /* CUB: move left N cols */
2717 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
2719 term
->seen_disp_event
= TRUE
;
2721 case 'E': /* CNL: move down N lines and CR */
2722 compatibility(ANSI
);
2724 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
2725 term
->seen_disp_event
= TRUE
;
2727 case 'F': /* CPL: move up N lines and CR */
2728 compatibility(ANSI
);
2730 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
2731 term
->seen_disp_event
= TRUE
;
2734 case '`': /* HPA: set horizontal posn */
2735 compatibility(ANSI
);
2736 move(term
, def(term
->esc_args
[0], 1) - 1,
2738 term
->seen_disp_event
= TRUE
;
2740 case 'd': /* VPA: set vertical posn */
2741 compatibility(ANSI
);
2742 move(term
, term
->curs
.x
,
2743 ((term
->dec_om ? term
->marg_t
: 0) +
2744 def(term
->esc_args
[0], 1) - 1),
2745 (term
->dec_om ?
2 : 0));
2746 term
->seen_disp_event
= TRUE
;
2749 case 'f': /* HVP: set horz and vert posns at once */
2750 if (term
->esc_nargs
< 2)
2751 term
->esc_args
[1] = ARG_DEFAULT
;
2752 move(term
, def(term
->esc_args
[1], 1) - 1,
2753 ((term
->dec_om ? term
->marg_t
: 0) +
2754 def(term
->esc_args
[0], 1) - 1),
2755 (term
->dec_om ?
2 : 0));
2756 term
->seen_disp_event
= TRUE
;
2758 case 'J': /* ED: erase screen or parts of it */
2760 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2763 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
2766 term
->seen_disp_event
= TRUE
;
2768 case 'K': /* EL: erase line or parts of it */
2770 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
2773 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
2775 term
->seen_disp_event
= TRUE
;
2777 case 'L': /* IL: insert lines */
2778 compatibility(VT102
);
2779 if (term
->curs
.y
<= term
->marg_b
)
2780 scroll(term
, term
->curs
.y
, term
->marg_b
,
2781 -def(term
->esc_args
[0], 1), FALSE
);
2783 term
->seen_disp_event
= TRUE
;
2785 case 'M': /* DL: delete lines */
2786 compatibility(VT102
);
2787 if (term
->curs
.y
<= term
->marg_b
)
2788 scroll(term
, term
->curs
.y
, term
->marg_b
,
2789 def(term
->esc_args
[0], 1),
2792 term
->seen_disp_event
= TRUE
;
2794 case '@': /* ICH: insert chars */
2795 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2796 compatibility(VT102
);
2797 insch(term
, def(term
->esc_args
[0], 1));
2798 term
->seen_disp_event
= TRUE
;
2800 case 'P': /* DCH: delete chars */
2801 compatibility(VT102
);
2802 insch(term
, -def(term
->esc_args
[0], 1));
2803 term
->seen_disp_event
= TRUE
;
2805 case 'c': /* DA: terminal type query */
2806 compatibility(VT100
);
2807 /* This is the response for a VT102 */
2809 ldisc_send(term
->ldisc
, term
->id_string
,
2810 strlen(term
->id_string
), 0);
2812 case 'n': /* DSR: cursor position query */
2814 if (term
->esc_args
[0] == 6) {
2816 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
2818 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
2819 } else if (term
->esc_args
[0] == 5) {
2820 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
2824 case 'h': /* SM: toggle modes to high */
2826 compatibility(VT100
);
2829 for (i
= 0; i
< term
->esc_nargs
; i
++)
2830 toggle_mode(term
, term
->esc_args
[i
],
2831 term
->esc_query
, TRUE
);
2834 case 'i': /* MC: Media copy */
2836 compatibility(VT100
);
2838 if (term
->esc_nargs
!= 1) break;
2839 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
2840 term
->printing
= TRUE
;
2841 term
->only_printing
= !term
->esc_query
;
2842 term
->print_state
= 0;
2843 term_print_setup(term
);
2844 } else if (term
->esc_args
[0] == 4 &&
2846 term_print_finish(term
);
2850 case 'l': /* RM: toggle modes to low */
2852 compatibility(VT100
);
2855 for (i
= 0; i
< term
->esc_nargs
; i
++)
2856 toggle_mode(term
, term
->esc_args
[i
],
2857 term
->esc_query
, FALSE
);
2860 case 'g': /* TBC: clear tabs */
2861 compatibility(VT100
);
2862 if (term
->esc_nargs
== 1) {
2863 if (term
->esc_args
[0] == 0) {
2864 term
->tabs
[term
->curs
.x
] = FALSE
;
2865 } else if (term
->esc_args
[0] == 3) {
2867 for (i
= 0; i
< term
->cols
; i
++)
2868 term
->tabs
[i
] = FALSE
;
2872 case 'r': /* DECSTBM: set scroll margins */
2873 compatibility(VT100
);
2874 if (term
->esc_nargs
<= 2) {
2876 top
= def(term
->esc_args
[0], 1) - 1;
2877 bot
= (term
->esc_nargs
<= 1
2878 || term
->esc_args
[1] == 0 ?
2880 def(term
->esc_args
[1], term
->rows
)) - 1;
2881 if (bot
>= term
->rows
)
2882 bot
= term
->rows
- 1;
2883 /* VTTEST Bug 9 - if region is less than 2 lines
2884 * don't change region.
2886 if (bot
- top
> 0) {
2891 * I used to think the cursor should be
2892 * placed at the top of the newly marginned
2893 * area. Apparently not: VMS TPU falls over
2896 * Well actually it should for
2899 term
->curs
.y
= (term
->dec_om ?
2902 term
->seen_disp_event
= TRUE
;
2906 case 'm': /* SGR: set graphics rendition */
2909 * A VT100 without the AVO only had one
2910 * attribute, either underline or
2911 * reverse video depending on the
2912 * cursor type, this was selected by
2916 * This is sometimes DIM, eg on the
2919 * This is sometimes INVIS various ANSI.
2921 * This like 22 disables BOLD, DIM and INVIS
2923 * The ANSI colours appear on any
2924 * terminal that has colour (obviously)
2925 * but the interaction between sgr0 and
2926 * the colours varies but is usually
2927 * related to the background colour
2928 * erase item. The interaction between
2929 * colour attributes and the mono ones
2930 * is also very implementation
2933 * The 39 and 49 attributes are likely
2934 * to be unimplemented.
2937 for (i
= 0; i
< term
->esc_nargs
; i
++) {
2938 switch (def(term
->esc_args
[i
], 0)) {
2939 case 0: /* restore defaults */
2940 term
->curr_attr
= term
->default_attr
;
2942 case 1: /* enable bold */
2943 compatibility(VT100AVO
);
2944 term
->curr_attr
|= ATTR_BOLD
;
2946 case 21: /* (enable double underline) */
2947 compatibility(OTHER
);
2948 case 4: /* enable underline */
2949 compatibility(VT100AVO
);
2950 term
->curr_attr
|= ATTR_UNDER
;
2952 case 5: /* enable blink */
2953 compatibility(VT100AVO
);
2954 term
->curr_attr
|= ATTR_BLINK
;
2956 case 6: /* SCO light bkgrd */
2957 compatibility(SCOANSI
);
2958 term
->blink_is_real
= FALSE
;
2959 term
->curr_attr
|= ATTR_BLINK
;
2961 case 7: /* enable reverse video */
2962 term
->curr_attr
|= ATTR_REVERSE
;
2964 case 10: /* SCO acs off */
2965 compatibility(SCOANSI
);
2966 if (term
->cfg
.no_remote_charset
) break;
2967 term
->sco_acs
= 0; break;
2968 case 11: /* SCO acs on */
2969 compatibility(SCOANSI
);
2970 if (term
->cfg
.no_remote_charset
) break;
2971 term
->sco_acs
= 1; break;
2972 case 12: /* SCO acs on, |0x80 */
2973 compatibility(SCOANSI
);
2974 if (term
->cfg
.no_remote_charset
) break;
2975 term
->sco_acs
= 2; break;
2976 case 22: /* disable bold */
2977 compatibility2(OTHER
, VT220
);
2978 term
->curr_attr
&= ~ATTR_BOLD
;
2980 case 24: /* disable underline */
2981 compatibility2(OTHER
, VT220
);
2982 term
->curr_attr
&= ~ATTR_UNDER
;
2984 case 25: /* disable blink */
2985 compatibility2(OTHER
, VT220
);
2986 term
->curr_attr
&= ~ATTR_BLINK
;
2988 case 27: /* disable reverse video */
2989 compatibility2(OTHER
, VT220
);
2990 term
->curr_attr
&= ~ATTR_REVERSE
;
3001 term
->curr_attr
&= ~ATTR_FGMASK
;
3003 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3013 /* xterm-style bright foreground */
3014 term
->curr_attr
&= ~ATTR_FGMASK
;
3016 ((term
->esc_args
[i
] - 90 + 16)
3019 case 39: /* default-foreground */
3020 term
->curr_attr
&= ~ATTR_FGMASK
;
3021 term
->curr_attr
|= ATTR_DEFFG
;
3032 term
->curr_attr
&= ~ATTR_BGMASK
;
3034 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3044 /* xterm-style bright background */
3045 term
->curr_attr
&= ~ATTR_BGMASK
;
3047 ((term
->esc_args
[i
] - 100 + 16)
3050 case 49: /* default-background */
3051 term
->curr_attr
&= ~ATTR_BGMASK
;
3052 term
->curr_attr
|= ATTR_DEFBG
;
3056 set_erase_char(term
);
3059 case 's': /* save cursor */
3060 save_cursor(term
, TRUE
);
3062 case 'u': /* restore cursor */
3063 save_cursor(term
, FALSE
);
3064 term
->seen_disp_event
= TRUE
;
3066 case 't': /* DECSLPP: set page size - ie window height */
3068 * VT340/VT420 sequence DECSLPP, DEC only allows values
3069 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3070 * illegal values (eg first arg 1..9) for window changing
3073 if (term
->esc_nargs
<= 1
3074 && (term
->esc_args
[0] < 1 ||
3075 term
->esc_args
[0] >= 24)) {
3076 compatibility(VT340TEXT
);
3077 if (!term
->cfg
.no_remote_resize
)
3078 request_resize(term
->frontend
, term
->cols
,
3079 def(term
->esc_args
[0], 24));
3081 } else if (term
->esc_nargs
>= 1 &&
3082 term
->esc_args
[0] >= 1 &&
3083 term
->esc_args
[0] < 24) {
3084 compatibility(OTHER
);
3086 switch (term
->esc_args
[0]) {
3090 set_iconic(term
->frontend
, FALSE
);
3093 set_iconic(term
->frontend
, TRUE
);
3096 if (term
->esc_nargs
>= 3) {
3097 if (!term
->cfg
.no_remote_resize
)
3098 move_window(term
->frontend
,
3099 def(term
->esc_args
[1], 0),
3100 def(term
->esc_args
[2], 0));
3104 /* We should resize the window to a given
3105 * size in pixels here, but currently our
3106 * resizing code isn't healthy enough to
3111 set_zorder(term
->frontend
, TRUE
);
3114 /* move to bottom */
3115 set_zorder(term
->frontend
, FALSE
);
3118 refresh_window(term
->frontend
);
3121 if (term
->esc_nargs
>= 3) {
3122 if (!term
->cfg
.no_remote_resize
)
3123 request_resize(term
->frontend
,
3124 def(term
->esc_args
[2], term
->cfg
.width
),
3125 def(term
->esc_args
[1], term
->cfg
.height
));
3129 if (term
->esc_nargs
>= 2)
3130 set_zoomed(term
->frontend
,
3136 ldisc_send(term
->ldisc
,
3137 is_iconic(term
->frontend
) ?
3138 "\033[1t" : "\033[2t", 4, 0);
3142 get_window_pos(term
->frontend
, &x
, &y
);
3143 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3144 ldisc_send(term
->ldisc
, buf
, len
, 0);
3149 get_window_pixels(term
->frontend
, &x
, &y
);
3150 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
3151 ldisc_send(term
->ldisc
, buf
, len
, 0);
3156 len
= sprintf(buf
, "\033[8;%d;%dt",
3157 term
->rows
, term
->cols
);
3158 ldisc_send(term
->ldisc
, buf
, len
, 0);
3163 * Hmmm. Strictly speaking we
3164 * should return `the size of the
3165 * screen in characters', but
3166 * that's not easy: (a) window
3167 * furniture being what it is it's
3168 * hard to compute, and (b) in
3169 * resize-font mode maximising the
3170 * window wouldn't change the
3171 * number of characters. *shrug*. I
3172 * think we'll ignore it for the
3173 * moment and see if anyone
3174 * complains, and then ask them
3175 * what they would like it to do.
3180 !term
->cfg
.no_remote_qtitle
) {
3181 p
= get_window_title(term
->frontend
, TRUE
);
3183 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3184 ldisc_send(term
->ldisc
, p
, len
, 0);
3185 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3190 !term
->cfg
.no_remote_qtitle
) {
3191 p
= get_window_title(term
->frontend
,FALSE
);
3193 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3194 ldisc_send(term
->ldisc
, p
, len
, 0);
3195 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3201 case 'S': /* SU: Scroll up */
3202 compatibility(SCOANSI
);
3203 scroll(term
, term
->marg_t
, term
->marg_b
,
3204 def(term
->esc_args
[0], 1), TRUE
);
3206 term
->wrapnext
= FALSE
;
3207 term
->seen_disp_event
= TRUE
;
3209 case 'T': /* SD: Scroll down */
3210 compatibility(SCOANSI
);
3211 scroll(term
, term
->marg_t
, term
->marg_b
,
3212 -def(term
->esc_args
[0], 1), TRUE
);
3214 term
->wrapnext
= FALSE
;
3215 term
->seen_disp_event
= TRUE
;
3217 case ANSI('|', '*'): /* DECSNLS */
3219 * Set number of lines on screen
3220 * VT420 uses VGA like hardware and can
3221 * support any size in reasonable range
3222 * (24..49 AIUI) with no default specified.
3224 compatibility(VT420
);
3225 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3226 if (!term
->cfg
.no_remote_resize
)
3227 request_resize(term
->frontend
, term
->cols
,
3228 def(term
->esc_args
[0],
3233 case ANSI('|', '$'): /* DECSCPP */
3235 * Set number of columns per page
3236 * Docs imply range is only 80 or 132, but
3239 compatibility(VT340TEXT
);
3240 if (term
->esc_nargs
<= 1) {
3241 if (!term
->cfg
.no_remote_resize
)
3242 request_resize(term
->frontend
,
3243 def(term
->esc_args
[0],
3244 term
->cfg
.width
), term
->rows
);
3248 case 'X': /* ECH: write N spaces w/o moving cursor */
3249 /* XXX VTTEST says this is vt220, vt510 manual
3251 compatibility(ANSIMIN
);
3253 int n
= def(term
->esc_args
[0], 1);
3255 termchar
*p
= term
->cpos
;
3256 if (n
> term
->cols
- term
->curs
.x
)
3257 n
= term
->cols
- term
->curs
.x
;
3258 cursplus
= term
->curs
;
3260 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3261 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
3262 check_selection(term
, term
->curs
, cursplus
);
3264 *p
++ = term
->erase_char
;
3265 term
->seen_disp_event
= TRUE
;
3268 case 'x': /* DECREQTPARM: report terminal characteristics */
3269 compatibility(VT100
);
3272 int i
= def(term
->esc_args
[0], 0);
3273 if (i
== 0 || i
== 1) {
3274 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
3276 ldisc_send(term
->ldisc
, buf
, 20, 0);
3280 case 'Z': /* CBT: BackTab for xterm */
3281 compatibility(OTHER
);
3283 int i
= def(term
->esc_args
[0], 1);
3284 pos old_curs
= term
->curs
;
3286 for(;i
>0 && term
->curs
.x
>0; i
--) {
3289 } while (term
->curs
.x
>0 &&
3290 !term
->tabs
[term
->curs
.x
]);
3293 check_selection(term
, old_curs
, term
->curs
);
3296 case ANSI('c', '='): /* Hide or Show Cursor */
3297 compatibility(SCOANSI
);
3298 switch(term
->esc_args
[0]) {
3299 case 0: /* hide cursor */
3300 term
->cursor_on
= FALSE
;
3302 case 1: /* restore cursor */
3303 term
->big_cursor
= FALSE
;
3304 term
->cursor_on
= TRUE
;
3306 case 2: /* block cursor */
3307 term
->big_cursor
= TRUE
;
3308 term
->cursor_on
= TRUE
;
3312 case ANSI('C', '='):
3314 * set cursor start on scanline esc_args[0] and
3315 * end on scanline esc_args[1].If you set
3316 * the bottom scan line to a value less than
3317 * the top scan line, the cursor will disappear.
3319 compatibility(SCOANSI
);
3320 if (term
->esc_nargs
>= 2) {
3321 if (term
->esc_args
[0] > term
->esc_args
[1])
3322 term
->cursor_on
= FALSE
;
3324 term
->cursor_on
= TRUE
;
3327 case ANSI('D', '='):
3328 compatibility(SCOANSI
);
3329 term
->blink_is_real
= FALSE
;
3330 if (term
->esc_args
[0]>=1)
3331 term
->curr_attr
|= ATTR_BLINK
;
3333 term
->curr_attr
&= ~ATTR_BLINK
;
3335 case ANSI('E', '='):
3336 compatibility(SCOANSI
);
3337 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
3339 case ANSI('F', '='): /* set normal foreground */
3340 compatibility(SCOANSI
);
3341 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3343 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3344 ((term
->esc_args
[0] & 0x8) << 1)) <<
3346 term
->curr_attr
&= ~ATTR_FGMASK
;
3347 term
->curr_attr
|= colour
;
3348 term
->default_attr
&= ~ATTR_FGMASK
;
3349 term
->default_attr
|= colour
;
3352 case ANSI('G', '='): /* set normal background */
3353 compatibility(SCOANSI
);
3354 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3356 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3357 ((term
->esc_args
[0] & 0x8) << 1)) <<
3359 term
->curr_attr
&= ~ATTR_BGMASK
;
3360 term
->curr_attr
|= colour
;
3361 term
->default_attr
&= ~ATTR_BGMASK
;
3362 term
->default_attr
|= colour
;
3365 case ANSI('L', '='):
3366 compatibility(SCOANSI
);
3367 term
->use_bce
= (term
->esc_args
[0] <= 0);
3368 set_erase_char(term
);
3370 case ANSI('p', '"'): /* DECSCL: set compat level */
3372 * Allow the host to make this emulator a
3373 * 'perfect' VT102. This first appeared in
3374 * the VT220, but we do need to get back to
3375 * PuTTY mode so I won't check it.
3377 * The arg in 40..42,50 are a PuTTY extension.
3378 * The 2nd arg, 8bit vs 7bit is not checked.
3380 * Setting VT102 mode should also change
3381 * the Fkeys to generate PF* codes as a
3382 * real VT102 has no Fkeys. The VT220 does
3383 * this, F11..F13 become ESC,BS,LF other
3384 * Fkeys send nothing.
3386 * Note ESC c will NOT change this!
3389 switch (term
->esc_args
[0]) {
3391 term
->compatibility_level
&= ~TM_VTXXX
;
3392 term
->compatibility_level
|= TM_VT102
;
3395 term
->compatibility_level
&= ~TM_VTXXX
;
3396 term
->compatibility_level
|= TM_VT220
;
3400 if (term
->esc_args
[0] > 60 &&
3401 term
->esc_args
[0] < 70)
3402 term
->compatibility_level
|= TM_VTXXX
;
3406 term
->compatibility_level
&= TM_VTXXX
;
3409 term
->compatibility_level
= TM_PUTTY
;
3412 term
->compatibility_level
= TM_SCOANSI
;
3416 term
->compatibility_level
= TM_PUTTY
;
3422 /* Change the response to CSI c */
3423 if (term
->esc_args
[0] == 50) {
3426 strcpy(term
->id_string
, "\033[?");
3427 for (i
= 1; i
< term
->esc_nargs
; i
++) {
3429 strcat(term
->id_string
, ";");
3430 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
3431 strcat(term
->id_string
, lbuf
);
3433 strcat(term
->id_string
, "c");
3436 /* Is this a good idea ?
3437 * Well we should do a soft reset at this point ...
3439 if (!has_compat(VT420
) && has_compat(VT100
)) {
3440 if (!term
->cfg
.no_remote_resize
) {
3441 if (term
->reset_132
)
3442 request_resize(132, 24);
3444 request_resize(80, 24);
3452 term
->osc_w
= FALSE
;
3454 case 'P': /* Linux palette sequence */
3455 term
->termstate
= SEEN_OSC_P
;
3456 term
->osc_strlen
= 0;
3458 case 'R': /* Linux palette reset */
3459 palette_reset(term
->frontend
);
3460 term_invalidate(term
);
3461 term
->termstate
= TOPLEVEL
;
3463 case 'W': /* word-set */
3464 term
->termstate
= SEEN_OSC_W
;
3477 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
3481 * Grotty hack to support xterm and DECterm title
3482 * sequences concurrently.
3484 if (term
->esc_args
[0] == 2) {
3485 term
->esc_args
[0] = 1;
3488 /* else fall through */
3490 term
->termstate
= OSC_STRING
;
3491 term
->osc_strlen
= 0;
3496 * This OSC stuff is EVIL. It takes just one character to get into
3497 * sysline mode and it's not initially obvious how to get out.
3498 * So I've added CR and LF as string aborts.
3499 * This shouldn't effect compatibility as I believe embedded
3500 * control characters are supposed to be interpreted (maybe?)
3501 * and they don't display anything useful anyway.
3505 if (c
== '\012' || c
== '\015') {
3506 term
->termstate
= TOPLEVEL
;
3507 } else if (c
== 0234 || c
== '\007') {
3509 * These characters terminate the string; ST and BEL
3510 * terminate the sequence and trigger instant
3511 * processing of it, whereas ESC goes back to SEEN_ESC
3512 * mode unless it is followed by \, in which case it is
3513 * synonymous with ST in the first place.
3516 term
->termstate
= TOPLEVEL
;
3517 } else if (c
== '\033')
3518 term
->termstate
= OSC_MAYBE_ST
;
3519 else if (term
->osc_strlen
< OSC_STR_MAX
)
3520 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
3524 int max
= (term
->osc_strlen
== 0 ?
21 : 16);
3526 if ((int)c
>= '0' && (int)c
<= '9')
3528 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
3530 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
3533 term
->termstate
= TOPLEVEL
;
3536 term
->osc_string
[term
->osc_strlen
++] = val
;
3537 if (term
->osc_strlen
>= 7) {
3538 palette_set(term
->frontend
, term
->osc_string
[0],
3539 term
->osc_string
[1] * 16 + term
->osc_string
[2],
3540 term
->osc_string
[3] * 16 + term
->osc_string
[4],
3541 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
3542 term_invalidate(term
);
3543 term
->termstate
= TOPLEVEL
;
3559 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
3562 term
->termstate
= OSC_STRING
;
3563 term
->osc_strlen
= 0;
3567 term
->termstate
= TOPLEVEL
;
3568 term
->seen_disp_event
= TRUE
;
3571 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
3574 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
3577 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
3580 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
3583 * From the VT100 Manual
3584 * NOTE: The special graphics characters in the VT100
3585 * are different from those in the VT52
3587 * From VT102 manual:
3588 * 137 _ Blank - Same
3589 * 140 ` Reserved - Humm.
3590 * 141 a Solid rectangle - Similar
3591 * 142 b 1/ - Top half of fraction for the
3592 * 143 c 3/ - subscript numbers below.
3595 * 146 f Degrees - Same
3596 * 147 g Plus or minus - Same
3598 * 151 i Ellipsis (dots)
3601 * 154 l Bar at scan 0
3602 * 155 m Bar at scan 1
3603 * 156 n Bar at scan 2
3604 * 157 o Bar at scan 3 - Similar
3605 * 160 p Bar at scan 4 - Similar
3606 * 161 q Bar at scan 5 - Similar
3607 * 162 r Bar at scan 6 - Same
3608 * 163 s Bar at scan 7 - Similar
3623 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
3626 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
3629 move(term
, 0, 0, 0);
3632 if (term
->curs
.y
== 0)
3633 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
3634 else if (term
->curs
.y
> 0)
3637 term
->wrapnext
= FALSE
;
3640 erase_lots(term
, FALSE
, FALSE
, TRUE
);
3644 erase_lots(term
, TRUE
, FALSE
, TRUE
);
3648 /* XXX Print cursor line */
3651 /* XXX Start controller mode */
3654 /* XXX Stop controller mode */
3658 term
->termstate
= VT52_Y1
;
3662 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
3665 term
->app_keypad_keys
= TRUE
;
3668 term
->app_keypad_keys
= FALSE
;
3671 /* XXX This should switch to VT100 mode not current or default
3672 * VT mode. But this will only have effect in a VT220+
3675 term
->vt52_mode
= FALSE
;
3676 term
->blink_is_real
= term
->cfg
.blinktext
;
3680 /* XXX Enter auto print mode */
3683 /* XXX Exit auto print mode */
3686 /* XXX Print screen */
3692 /* compatibility(ATARI) */
3693 move(term
, 0, 0, 0);
3694 erase_lots(term
, FALSE
, FALSE
, TRUE
);
3698 /* compatibility(ATARI) */
3699 if (term
->curs
.y
<= term
->marg_b
)
3700 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
3703 /* compatibility(ATARI) */
3704 if (term
->curs
.y
<= term
->marg_b
)
3705 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
3708 /* compatibility(ATARI) */
3709 term
->termstate
= VT52_FG
;
3712 /* compatibility(ATARI) */
3713 term
->termstate
= VT52_BG
;
3716 /* compatibility(ATARI) */
3717 erase_lots(term
, FALSE
, TRUE
, FALSE
);
3721 /* compatibility(ATARI) */
3722 term
->cursor_on
= TRUE
;
3725 /* compatibility(ATARI) */
3726 term
->cursor_on
= FALSE
;
3728 /* case 'j': Save cursor position - broken on ST */
3729 /* case 'k': Restore cursor position */
3731 /* compatibility(ATARI) */
3732 erase_lots(term
, TRUE
, TRUE
, TRUE
);
3734 term
->wrapnext
= FALSE
;
3738 /* compatibility(ATARI) */
3739 erase_lots(term
, TRUE
, TRUE
, FALSE
);
3742 /* compatibility(ATARI) */
3743 term
->curr_attr
|= ATTR_REVERSE
;
3746 /* compatibility(ATARI) */
3747 term
->curr_attr
&= ~ATTR_REVERSE
;
3749 case 'v': /* wrap Autowrap on - Wyse style */
3750 /* compatibility(ATARI) */
3753 case 'w': /* Autowrap off */
3754 /* compatibility(ATARI) */
3759 /* compatibility(OTHER) */
3760 term
->vt52_bold
= FALSE
;
3761 term
->curr_attr
= ATTR_DEFAULT
;
3762 set_erase_char(term
);
3765 /* compatibility(VI50) */
3766 term
->curr_attr
|= ATTR_UNDER
;
3769 /* compatibility(VI50) */
3770 term
->curr_attr
&= ~ATTR_UNDER
;
3773 /* compatibility(VI50) */
3774 term
->vt52_bold
= TRUE
;
3775 term
->curr_attr
|= ATTR_BOLD
;
3778 /* compatibility(VI50) */
3779 term
->vt52_bold
= FALSE
;
3780 term
->curr_attr
&= ~ATTR_BOLD
;
3786 term
->termstate
= VT52_Y2
;
3787 move(term
, term
->curs
.x
, c
- ' ', 0);
3790 term
->termstate
= TOPLEVEL
;
3791 move(term
, c
- ' ', term
->curs
.y
, 0);
3796 term
->termstate
= TOPLEVEL
;
3797 term
->curr_attr
&= ~ATTR_FGMASK
;
3798 term
->curr_attr
&= ~ATTR_BOLD
;
3799 term
->curr_attr
|= (c
& 0x7) << ATTR_FGSHIFT
;
3800 if ((c
& 0x8) || term
->vt52_bold
)
3801 term
->curr_attr
|= ATTR_BOLD
;
3803 set_erase_char(term
);
3806 term
->termstate
= TOPLEVEL
;
3807 term
->curr_attr
&= ~ATTR_BGMASK
;
3808 term
->curr_attr
&= ~ATTR_BLINK
;
3809 term
->curr_attr
|= (c
& 0x7) << ATTR_BGSHIFT
;
3811 /* Note: bold background */
3813 term
->curr_attr
|= ATTR_BLINK
;
3815 set_erase_char(term
);
3818 default: break; /* placate gcc warning about enum use */
3820 if (term
->selstate
!= NO_SELECTION
) {
3821 pos cursplus
= term
->curs
;
3823 check_selection(term
, term
->curs
, cursplus
);
3827 term_print_flush(term
);
3828 logflush(term
->logctx
);
3832 * To prevent having to run the reasonably tricky bidi algorithm
3833 * too many times, we maintain a cache of the last lineful of data
3834 * fed to the algorithm on each line of the display.
3836 static int term_bidi_cache_hit(Terminal
*term
, int line
,
3837 termchar
*lbefore
, int width
)
3839 if (!term
->pre_bidi_cache
)
3840 return FALSE
; /* cache doesn't even exist yet! */
3842 if (line
>= term
->bidi_cache_size
)
3843 return FALSE
; /* cache doesn't have this many lines */
3845 if (!term
->pre_bidi_cache
[line
])
3846 return FALSE
; /* cache doesn't contain _this_ line */
3848 if (!memcmp(term
->pre_bidi_cache
[line
], lbefore
, width
* TSIZE
))
3849 return TRUE
; /* aha! the line matches the cache */
3851 return FALSE
; /* it didn't match. */
3854 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
3855 termchar
*lafter
, int width
)
3857 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
3858 int j
= term
->bidi_cache_size
;
3859 term
->bidi_cache_size
= line
+1;
3860 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
3861 term
->bidi_cache_size
,
3863 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
3864 term
->bidi_cache_size
,
3866 while (j
< term
->bidi_cache_size
) {
3867 term
->pre_bidi_cache
[j
] = term
->post_bidi_cache
[j
] = NULL
;
3872 sfree(term
->pre_bidi_cache
[line
]);
3873 sfree(term
->post_bidi_cache
[line
]);
3875 term
->pre_bidi_cache
[line
] = snewn(width
, termchar
);
3876 term
->post_bidi_cache
[line
] = snewn(width
, termchar
);
3878 memcpy(term
->pre_bidi_cache
[line
], lbefore
, width
* TSIZE
);
3879 memcpy(term
->post_bidi_cache
[line
], lafter
, width
* TSIZE
);
3883 * Given a context, update the window. Out of paranoia, we don't
3884 * allow WM_PAINT responses to do scrolling optimisations.
3886 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
3888 int i
, it
, j
, our_curs_y
, our_curs_x
;
3892 termchar cursor_background
;
3893 unsigned long ticks
;
3894 #ifdef OPTIMISE_SCROLL
3895 struct scrollregion
*sr
;
3896 #endif /* OPTIMISE_SCROLL */
3898 cursor_background
= term
->basic_erase_char
;
3901 * Check the visual bell state.
3903 if (term
->in_vbell
) {
3904 ticks
= GETTICKCOUNT();
3905 if (ticks
- term
->vbell_startpoint
>= VBELL_TIMEOUT
)
3906 term
->in_vbell
= FALSE
;
3909 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
3912 * screen array, disptop, scrtop,
3914 * cfg.blinkpc, blink_is_real, tblinker,
3915 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
3918 /* Has the cursor position or type changed ? */
3919 if (term
->cursor_on
) {
3920 if (term
->has_focus
) {
3921 if (term
->blinker
|| !term
->cfg
.blink_cur
)
3922 cursor
= TATTR_ACTCURS
;
3926 cursor
= TATTR_PASCURS
;
3928 cursor
|= TATTR_RIGHTCURS
;
3931 our_curs_y
= term
->curs
.y
- term
->disptop
;
3934 * Adjust the cursor position in the case where it's
3935 * resting on the right-hand half of a CJK wide character.
3936 * xterm's behaviour here, which seems adequate to me, is
3937 * to display the cursor covering the _whole_ character,
3938 * exactly as if it were one space to the left.
3940 termline
*ldata
= lineptr(term
->curs
.y
);
3941 our_curs_x
= term
->curs
.x
;
3942 if (our_curs_x
> 0 &&
3943 ldata
->chars
[our_curs_x
].chr
== UCSWIDE
)
3949 * If the cursor is not where it was last time we painted, and
3950 * its previous position is visible on screen, invalidate its
3951 * previous position.
3953 if (term
->dispcursy
>= 0 &&
3954 (term
->curstype
!= cursor
||
3955 term
->dispcursy
!= our_curs_y
||
3956 term
->dispcursx
!= our_curs_x
)) {
3957 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
3960 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
3961 dispcurs
[-1].attr
|= ATTR_INVALID
;
3962 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
3963 dispcurs
[1].attr
|= ATTR_INVALID
;
3964 dispcurs
->attr
|= ATTR_INVALID
;
3968 term
->dispcursx
= term
->dispcursy
= -1;
3970 #ifdef OPTIMISE_SCROLL
3972 sr
= term
->scrollhead
;
3974 struct scrollregion
*next
= sr
->next
;
3975 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
3979 term
->scrollhead
= term
->scrolltail
= NULL
;
3980 #endif /* OPTIMISE_SCROLL */
3982 /* The normal screen data */
3983 for (i
= 0; i
< term
->rows
; i
++) {
3986 int dirty_line
, dirty_run
, selected
;
3987 unsigned long attr
= 0, cset
= 0;
3988 int updated_line
= 0;
3991 int last_run_dirty
= 0;
3993 scrpos
.y
= i
+ term
->disptop
;
3994 ldata
= lineptr(scrpos
.y
);
3996 dirty_run
= dirty_line
= (ldata
->lattr
!=
3997 term
->disptext
[i
]->lattr
);
3998 term
->disptext
[i
]->lattr
= ldata
->lattr
;
4000 /* Do Arabic shaping and bidi. */
4001 if(!term
->cfg
.bidi
|| !term
->cfg
.arabicshaping
) {
4003 if (!term_bidi_cache_hit(term
, i
, ldata
->chars
, term
->cols
)) {
4005 for(it
=0; it
<term
->cols
; it
++)
4007 unsigned long uc
= (ldata
->chars
[it
].chr
);
4009 switch (uc
& CSET_MASK
) {
4011 if (!term
->cfg
.rawcnp
) {
4012 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4016 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4019 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4022 switch (uc
& CSET_MASK
) {
4024 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4027 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4031 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4033 term
->wcFrom
[it
].index
= it
;
4037 do_bidi(term
->wcFrom
, term
->cols
);
4039 /* this is saved iff done from inside the shaping */
4040 if(!term
->cfg
.bidi
&& term
->cfg
.arabicshaping
)
4041 for(it
=0; it
<term
->cols
; it
++)
4042 term
->wcTo
[it
] = term
->wcFrom
[it
];
4044 if(!term
->cfg
.arabicshaping
)
4045 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4047 for(it
=0; it
<term
->cols
; it
++)
4049 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4051 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4052 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4054 term_bidi_cache_store(term
, i
, ldata
->chars
,
4055 term
->ltemp
, term
->cols
);
4056 lchars
= term
->ltemp
;
4058 lchars
= term
->post_bidi_cache
[i
];
4061 lchars
= ldata
->chars
;
4063 for (j
= 0; j
< term
->cols
; j
++) {
4064 unsigned long tattr
, tchar
;
4065 termchar
*d
= lchars
+ j
;
4072 switch (tchar
& CSET_MASK
) {
4074 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4077 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4080 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4083 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4086 /* Video reversing things */
4087 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4088 if (term
->seltype
== LEXICOGRAPHIC
)
4089 selected
= (posle(term
->selstart
, scrpos
) &&
4090 poslt(scrpos
, term
->selend
));
4092 selected
= (posPle(term
->selstart
, scrpos
) &&
4093 posPlt(scrpos
, term
->selend
));
4097 ^ (selected ? ATTR_REVERSE
: 0));
4099 /* 'Real' blinking ? */
4100 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4101 if (term
->has_focus
&& term
->tblinker
) {
4102 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4104 tattr
&= ~ATTR_BLINK
;
4108 * Check the font we'll _probably_ be using to see if
4109 * the character is wide when we don't want it to be.
4111 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4112 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4114 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4115 tattr
|= ATTR_NARROW
;
4116 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4117 tattr
|= ATTR_NARROW
;
4119 /* Cursor here ? Save the 'background' */
4120 if (i
== our_curs_y
&& j
== our_curs_x
) {
4121 cursor_background
.chr
= tchar
;
4122 cursor_background
.attr
= tattr
;
4123 term
->dispcursx
= j
;
4124 term
->dispcursy
= i
;
4127 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
4130 break_run
= (((tattr
^ attr
) & term
->attr_mask
) ||
4131 j
- start
>= sizeof(ch
));
4133 /* Special hack for VT100 Linedraw glyphs */
4134 if (tchar
>= 0x23BA && tchar
<= 0x23BD)
4138 * Separate out sequences of characters that have the
4139 * same CSET, if that CSET is a magic one.
4141 if (CSET_OF(tchar
) != cset
)
4144 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
4145 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
4146 term
->disptext
[i
]->chars
[j
].attr
== tattr
)
4148 else if (!dirty_run
&& ccount
== 1)
4153 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
4154 do_text(ctx
, start
, i
, ch
, ccount
, attr
, ldata
->lattr
);
4160 cset
= CSET_OF(tchar
);
4161 if (term
->ucsdata
->dbcs_screenfont
)
4162 last_run_dirty
= dirty_run
;
4163 dirty_run
= dirty_line
;
4166 if (term
->disptext
[i
]->chars
[j
].chr
!= tchar
||
4167 term
->disptext
[i
]->chars
[j
].attr
!= tattr
)
4169 ch
[ccount
++] = (wchar_t) tchar
;
4170 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
4171 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
4173 /* If it's a wide char step along to the next one. */
4174 if (tattr
& ATTR_WIDE
) {
4175 if (++j
< term
->cols
) {
4178 * By construction above, the cursor should not
4179 * be on the right-hand half of this character.
4182 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
4183 if (memcmp(&term
->disptext
[i
]->chars
[j
],
4186 term
->disptext
[i
]->chars
[j
] = *d
;
4190 if (dirty_run
&& ccount
> 0) {
4191 do_text(ctx
, start
, i
, ch
, ccount
, attr
, ldata
->lattr
);
4195 /* Cursor on this line ? (and changed) */
4196 if (i
== our_curs_y
&& (term
->curstype
!= cursor
|| updated_line
)) {
4197 ch
[0] = (wchar_t) cursor_background
.chr
;
4198 attr
= cursor_background
.attr
| cursor
;
4199 do_cursor(ctx
, our_curs_x
, i
, ch
, 1, attr
, ldata
->lattr
);
4200 term
->curstype
= cursor
;
4208 * Flick the switch that says if blinking things should be shown or hidden.
4211 void term_blink(Terminal
*term
, int flg
)
4213 long now
, blink_diff
;
4215 now
= GETTICKCOUNT();
4216 blink_diff
= now
- term
->last_tblink
;
4218 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
4219 if (blink_diff
< 0 || blink_diff
> (TICKSPERSEC
* 9 / 20)) {
4220 term
->last_tblink
= now
;
4221 term
->tblinker
= !term
->tblinker
;
4226 term
->last_blink
= now
;
4230 blink_diff
= now
- term
->last_blink
;
4232 /* Make sure the cursor blinks no faster than system blink rate */
4233 if (blink_diff
>= 0 && blink_diff
< (long) CURSORBLINK
)
4236 term
->last_blink
= now
;
4237 term
->blinker
= !term
->blinker
;
4241 * Invalidate the whole screen so it will be repainted in full.
4243 void term_invalidate(Terminal
*term
)
4247 for (i
= 0; i
< term
->rows
; i
++)
4248 for (j
= 0; j
< term
->cols
; j
++)
4249 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4253 * Paint the window in response to a WM_PAINT message.
4255 void term_paint(Terminal
*term
, Context ctx
,
4256 int left
, int top
, int right
, int bottom
, int immediately
)
4259 if (left
< 0) left
= 0;
4260 if (top
< 0) top
= 0;
4261 if (right
>= term
->cols
) right
= term
->cols
-1;
4262 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
4264 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
4265 if (term
->disptext
[i
]->lattr
== LATTR_NORM
)
4266 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
4267 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4269 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
4270 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4273 /* This should happen soon enough, also for some reason it sometimes
4274 * fails to actually do anything when re-sizing ... painting the wrong
4278 do_paint (term
, ctx
, FALSE
);
4282 * Attempt to scroll the scrollback. The second parameter gives the
4283 * position we want to scroll to; the first is +1 to denote that
4284 * this position is relative to the beginning of the scrollback, -1
4285 * to denote it is relative to the end, and 0 to denote that it is
4286 * relative to the current position.
4288 void term_scroll(Terminal
*term
, int rel
, int where
)
4290 int sbtop
= -sblines(term
);
4291 #ifdef OPTIMISE_SCROLL
4292 int olddisptop
= term
->disptop
;
4294 #endif /* OPTIMISE_SCROLL */
4296 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
4297 if (term
->disptop
< sbtop
)
4298 term
->disptop
= sbtop
;
4299 if (term
->disptop
> 0)
4302 #ifdef OPTIMISE_SCROLL
4303 shift
= (term
->disptop
- olddisptop
);
4304 if (shift
< term
->rows
&& shift
> -term
->rows
)
4305 scroll_display(term
, 0, term
->rows
- 1, shift
);
4306 #endif /* OPTIMISE_SCROLL */
4310 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
4313 wchar_t *wbptr
; /* where next char goes within workbuf */
4315 int wblen
= 0; /* workbuf len */
4316 int buflen
; /* amount of memory allocated to workbuf */
4318 buflen
= 5120; /* Default size */
4319 workbuf
= snewn(buflen
, wchar_t);
4320 wbptr
= workbuf
; /* start filling here */
4321 old_top_x
= top
.x
; /* needed for rect==1 */
4323 while (poslt(top
, bottom
)) {
4325 termline
*ldata
= lineptr(top
.y
);
4329 * nlpos will point at the maximum position on this line we
4330 * should copy up to. So we start it at the end of the
4334 nlpos
.x
= term
->cols
;
4337 * ... move it backwards if there's unused space at the end
4338 * of the line (and also set `nl' if this is the case,
4339 * because in normal selection mode this means we need a
4340 * newline at the end)...
4342 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
4343 while (IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
4346 if (poslt(nlpos
, bottom
))
4348 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
4349 /* Ignore the last char on the line in a WRAPPED2 line. */
4354 * ... and then clip it to the terminal x coordinate if
4355 * we're doing rectangular selection. (In this case we
4356 * still did the above, so that copying e.g. the right-hand
4357 * column from a table doesn't fill with spaces on the
4361 if (nlpos
.x
> bottom
.x
)
4363 nl
= (top
.y
< bottom
.y
);
4366 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
4369 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
4371 wchar_t cbuf
[16], *p
;
4372 int uc
= ldata
->chars
[top
.x
].chr
;
4375 if (uc
== UCSWIDE
) {
4380 switch (uc
& CSET_MASK
) {
4382 if (!term
->cfg
.rawcnp
) {
4383 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4387 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4390 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4393 switch (uc
& CSET_MASK
) {
4395 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4398 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4402 set
= (uc
& CSET_MASK
);
4403 c
= (uc
& ~CSET_MASK
);
4407 if (DIRECT_FONT(uc
)) {
4408 if (c
>= ' ' && c
!= 0x7F) {
4412 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
4414 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
4415 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
4419 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
4423 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
4430 for (p
= cbuf
; *p
; p
++) {
4431 /* Enough overhead for trailing NL and nul */
4432 if (wblen
>= buflen
- 16) {
4434 workbuf
= sresize(workbuf
, buflen
, wchar_t);
4435 wbptr
= workbuf
+ wblen
;
4444 for (i
= 0; i
< sel_nl_sz
; i
++) {
4446 *wbptr
++ = sel_nl
[i
];
4450 top
.x
= rect ? old_top_x
: 0;
4454 #if SELECTION_NUL_TERMINATED
4458 write_clip(term
->frontend
, workbuf
, wblen
, desel
); /* transfer to clipbd */
4459 if (buflen
> 0) /* indicates we allocated this buffer */
4463 void term_copyall(Terminal
*term
)
4467 tree234
*screen
= term
->screen
;
4468 top
.y
= -sblines(term
);
4470 bottom
.y
= find_last_nonempty_line(term
, screen
);
4471 bottom
.x
= term
->cols
;
4472 clipme(term
, top
, bottom
, 0, TRUE
);
4476 * The wordness array is mainly for deciding the disposition of the
4477 * US-ASCII characters.
4479 static int wordtype(Terminal
*term
, int uc
)
4482 int start
, end
, ctype
;
4484 static const struct ucsword ucs_words
[] = {
4490 0x037e, 0x037e, 1}, /* Greek question mark */
4492 0x0387, 0x0387, 1}, /* Greek ano teleia */
4494 0x055a, 0x055f, 1}, /* Armenian punctuation */
4496 0x0589, 0x0589, 1}, /* Armenian full stop */
4498 0x0700, 0x070d, 1}, /* Syriac punctuation */
4500 0x104a, 0x104f, 1}, /* Myanmar punctuation */
4502 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
4504 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
4506 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
4508 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
4510 0x1800, 0x180a, 1}, /* Mongolian punctuation */
4512 0x2000, 0x200a, 0}, /* Various spaces */
4514 0x2070, 0x207f, 2}, /* superscript */
4516 0x2080, 0x208f, 2}, /* subscript */
4518 0x200b, 0x27ff, 1}, /* punctuation and symbols */
4520 0x3000, 0x3000, 0}, /* ideographic space */
4522 0x3001, 0x3020, 1}, /* ideographic punctuation */
4524 0x303f, 0x309f, 3}, /* Hiragana */
4526 0x30a0, 0x30ff, 3}, /* Katakana */
4528 0x3300, 0x9fff, 3}, /* CJK Ideographs */
4530 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
4532 0xf900, 0xfaff, 3}, /* CJK Ideographs */
4534 0xfe30, 0xfe6b, 1}, /* punctuation forms */
4536 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
4538 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
4540 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
4542 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
4544 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
4548 const struct ucsword
*wptr
;
4550 switch (uc
& CSET_MASK
) {
4552 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4555 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4558 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4561 switch (uc
& CSET_MASK
) {
4563 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4566 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4570 /* For DBCS fonts I can't do anything useful. Even this will sometimes
4571 * fail as there's such a thing as a double width space. :-(
4573 if (term
->ucsdata
->dbcs_screenfont
&&
4574 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
4578 return term
->wordness
[uc
];
4580 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
4581 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
4589 * Spread the selection outwards according to the selection mode.
4591 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
4595 int topy
= -sblines(term
);
4597 ldata
= lineptr(p
.y
);
4599 switch (term
->selmode
) {
4602 * In this mode, every character is a separate unit, except
4603 * for runs of spaces at the end of a non-wrapping line.
4605 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
4606 termchar
*q
= ldata
->chars
+ term
->cols
;
4607 while (q
> ldata
->chars
&& IS_SPACE_CHR(q
[-1].chr
))
4609 if (q
== ldata
->chars
+ term
->cols
)
4611 if (p
.x
>= q
- ldata
->chars
)
4612 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
4617 * In this mode, the units are maximal runs of characters
4618 * whose `wordness' has the same value.
4620 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
4623 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
4624 term
->cols
-1 : term
->cols
);
4625 if (p
.x
< maxcols
-1) {
4626 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
4631 if (ldata
->lattr
& LATTR_WRAPPED
) {
4633 ldata2
= lineptr(p
.y
+1);
4634 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
4651 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
4660 ldata2
= lineptr(p
.y
-1);
4661 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
4662 term
->cols
-1 : term
->cols
);
4663 if (ldata2
->lattr
& LATTR_WRAPPED
) {
4664 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
4682 * In this mode, every line is a unit.
4684 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
4692 static void sel_spread(Terminal
*term
)
4694 if (term
->seltype
== LEXICOGRAPHIC
) {
4695 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
4696 decpos(term
->selend
);
4697 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
4698 incpos(term
->selend
);
4702 void term_do_paste(Terminal
*term
)
4707 get_clip(term
->frontend
, &data
, &len
);
4708 if (data
&& len
> 0) {
4711 term_seen_key_event(term
); /* pasted data counts */
4713 if (term
->paste_buffer
)
4714 sfree(term
->paste_buffer
);
4715 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
4716 term
->paste_buffer
= snewn(len
, wchar_t);
4719 while (p
< data
+ len
) {
4720 while (p
< data
+ len
&&
4721 !(p
<= data
+ len
- sel_nl_sz
&&
4722 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
4727 for (i
= 0; i
< p
- q
; i
++) {
4728 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
4732 if (p
<= data
+ len
- sel_nl_sz
&&
4733 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
4734 term
->paste_buffer
[term
->paste_len
++] = '\015';
4740 /* Assume a small paste will be OK in one go. */
4741 if (term
->paste_len
< 256) {
4743 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
4744 if (term
->paste_buffer
)
4745 sfree(term
->paste_buffer
);
4746 term
->paste_buffer
= 0;
4747 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
4750 get_clip(term
->frontend
, NULL
, NULL
);
4753 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
4754 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
4758 int raw_mouse
= (term
->xterm_mouse
&&
4759 !term
->cfg
.no_mouse_rep
&&
4760 !(term
->cfg
.mouse_override
&& shift
));
4761 int default_seltype
;
4765 if (a
== MA_DRAG
&& !raw_mouse
)
4766 term_scroll(term
, 0, -1);
4768 if (y
>= term
->rows
) {
4770 if (a
== MA_DRAG
&& !raw_mouse
)
4771 term_scroll(term
, 0, +1);
4780 if (x
>= term
->cols
)
4783 selpoint
.y
= y
+ term
->disptop
;
4785 ldata
= lineptr(selpoint
.y
);
4786 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
4791 int encstate
= 0, r
, c
;
4798 encstate
= 0x20; /* left button down */
4809 case MBT_WHEEL_DOWN
:
4812 default: break; /* placate gcc warning about enum use */
4816 if (term
->xterm_mouse
== 1)
4822 term
->mouse_is_down
= 0;
4825 if (term
->mouse_is_down
== braw
)
4827 term
->mouse_is_down
= braw
;
4829 default: break; /* placate gcc warning about enum use */
4838 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
4839 ldisc_send(term
->ldisc
, abuf
, 6, 0);
4845 * Set the selection type (rectangular or normal) at the start
4846 * of a selection attempt, from the state of Alt.
4848 if (!alt
^ !term
->cfg
.rect_select
)
4849 default_seltype
= RECTANGULAR
;
4851 default_seltype
= LEXICOGRAPHIC
;
4853 if (term
->selstate
== NO_SELECTION
) {
4854 term
->seltype
= default_seltype
;
4857 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
4859 term
->selstate
= ABOUT_TO
;
4860 term
->seltype
= default_seltype
;
4861 term
->selanchor
= selpoint
;
4862 term
->selmode
= SM_CHAR
;
4863 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
4865 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
4866 term
->selstate
= DRAGGING
;
4867 term
->selstart
= term
->selanchor
= selpoint
;
4868 term
->selend
= term
->selstart
;
4869 incpos(term
->selend
);
4871 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
4872 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
4873 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
4875 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
4876 term
->selstate
== SELECTED
) {
4877 if (term
->seltype
== LEXICOGRAPHIC
) {
4879 * For normal selection, we extend by moving
4880 * whichever end of the current selection is closer
4883 if (posdiff(selpoint
, term
->selstart
) <
4884 posdiff(term
->selend
, term
->selstart
) / 2) {
4885 term
->selanchor
= term
->selend
;
4886 decpos(term
->selanchor
);
4888 term
->selanchor
= term
->selstart
;
4892 * For rectangular selection, we have a choice of
4893 * _four_ places to put selanchor and selpoint: the
4894 * four corners of the selection.
4896 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
4897 term
->selanchor
.x
= term
->selend
.x
-1;
4899 term
->selanchor
.x
= term
->selstart
.x
;
4901 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
4902 term
->selanchor
.y
= term
->selend
.y
;
4904 term
->selanchor
.y
= term
->selstart
.y
;
4906 term
->selstate
= DRAGGING
;
4908 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
4909 term
->selanchor
= selpoint
;
4910 term
->selstate
= DRAGGING
;
4911 if (term
->seltype
== LEXICOGRAPHIC
) {
4913 * For normal selection, we set (selstart,selend) to
4914 * (selpoint,selanchor) in some order.
4916 if (poslt(selpoint
, term
->selanchor
)) {
4917 term
->selstart
= selpoint
;
4918 term
->selend
= term
->selanchor
;
4919 incpos(term
->selend
);
4921 term
->selstart
= term
->selanchor
;
4922 term
->selend
= selpoint
;
4923 incpos(term
->selend
);
4927 * For rectangular selection, we may need to
4928 * interchange x and y coordinates (if the user has
4929 * dragged in the -x and +y directions, or vice versa).
4931 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
4932 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
4933 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
4934 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
4937 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
4939 if (term
->selstate
== DRAGGING
) {
4941 * We've completed a selection. We now transfer the
4942 * data to the clipboard.
4944 clipme(term
, term
->selstart
, term
->selend
,
4945 (term
->seltype
== RECTANGULAR
), FALSE
);
4946 term
->selstate
= SELECTED
;
4948 term
->selstate
= NO_SELECTION
;
4949 } else if (bcooked
== MBT_PASTE
4951 #if MULTICLICK_ONLY_EVENT
4952 || a
== MA_2CLK
|| a
== MA_3CLK
4955 request_paste(term
->frontend
);
4961 void term_key(Terminal
*term
, Key_Sym keysym
, wchar_t *text
, size_t tlen
,
4962 unsigned int modifiers
, unsigned int flags
)
4966 int prependesc
= FALSE
;
4970 fprintf(stderr
, "keysym = %d, %d chars:", keysym
, tlen
);
4971 for (i
= 0; i
< tlen
; i
++)
4972 fprintf(stderr
, " %04x", (unsigned)text
[i
]);
4973 fprintf(stderr
, "\n");
4977 if ((flags
& PKF_REPEAT
) && term
->repeat_off
)
4980 /* Currently, Meta always just prefixes everything with ESC. */
4981 if (modifiers
& PKM_META
)
4983 modifiers
&= ~PKM_META
;
4986 * Alt is only used for Alt+keypad, which isn't supported yet, so
4989 modifiers
&= ~PKM_ALT
;
4991 /* Standard local function keys */
4992 switch (modifiers
& (PKM_SHIFT
| PKM_CONTROL
)) {
4994 if (keysym
== PK_PAGEUP
)
4995 /* scroll up one page */;
4996 if (keysym
== PK_PAGEDOWN
)
4997 /* scroll down on page */;
4998 if (keysym
== PK_INSERT
)
4999 term_do_paste(term
);
5002 if (keysym
== PK_PAGEUP
)
5003 /* scroll up one line */;
5004 if (keysym
== PK_PAGEDOWN
)
5005 /* scroll down one line */;
5006 /* Control-Numlock for app-keypad mode switch */
5007 if (keysym
== PK_PF1
)
5008 term
->app_keypad_keys
^= 1;
5012 if (modifiers
& PKM_ALT
) {
5013 /* Alt+F4 (close) */
5014 /* Alt+Return (full screen) */
5015 /* Alt+Space (system menu) */
5018 if (keysym
== PK_NULL
&& (modifiers
& PKM_CONTROL
) && tlen
== 1 &&
5019 text
[0] >= 0x20 && text
[0] <= 0x7e) {
5020 /* ASCII chars + Control */
5021 if ((text
[0] >= 0x40 && text
[0] <= 0x5f) ||
5022 (text
[0] >= 0x61 && text
[0] <= 0x7a))
5026 * Control-2 should return ^@ (0x00), Control-6 should return
5027 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5028 * the DOS keyboard handling did it, and we have nothing better
5029 * to do with the key combo in question, we'll also map
5030 * Control-Backquote to ^\ (0x1C).
5033 case ' ': text
[0] = 0x00; break;
5034 case '-': text
[0] = 0x1f; break;
5035 case '/': text
[0] = 0x1f; break;
5036 case '2': text
[0] = 0x00; break;
5037 case '3': text
[0] = 0x1b; break;
5038 case '4': text
[0] = 0x1c; break;
5039 case '5': text
[0] = 0x1d; break;
5040 case '6': text
[0] = 0x1e; break;
5041 case '7': text
[0] = 0x1f; break;
5042 case '8': text
[0] = 0x7f; break;
5043 case '`': text
[0] = 0x1c; break;
5048 /* Nethack keypad */
5049 if (term
->cfg
.nethack_keypad
) {
5052 case PK_KP1
: c
= 'b'; break;
5053 case PK_KP2
: c
= 'j'; break;
5054 case PK_KP3
: c
= 'n'; break;
5055 case PK_KP4
: c
= 'h'; break;
5056 case PK_KP5
: c
= '.'; break;
5057 case PK_KP6
: c
= 'l'; break;
5058 case PK_KP7
: c
= 'y'; break;
5059 case PK_KP8
: c
= 'k'; break;
5060 case PK_KP9
: c
= 'u'; break;
5061 default: break; /* else gcc warns `enum value not used' */
5065 if (modifiers
& PKM_CONTROL
)
5067 else if (modifiers
& PKM_SHIFT
)
5075 /* Numeric Keypad */
5076 if (PK_ISKEYPAD(keysym
)) {
5080 * In VT400 mode, PFn always emits an escape sequence. In
5081 * Linux and tilde modes, this only happens in app keypad mode.
5083 if (term
->cfg
.funky_type
== FUNKY_VT400
||
5084 ((term
->cfg
.funky_type
== FUNKY_LINUX
||
5085 term
->cfg
.funky_type
== FUNKY_TILDE
) &&
5086 term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
)) {
5088 case PK_PF1
: xkey
= 'P'; break;
5089 case PK_PF2
: xkey
= 'Q'; break;
5090 case PK_PF3
: xkey
= 'R'; break;
5091 case PK_PF4
: xkey
= 'S'; break;
5092 default: break; /* else gcc warns `enum value not used' */
5095 if (term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
) {
5097 case PK_KP0
: xkey
= 'p'; break;
5098 case PK_KP1
: xkey
= 'q'; break;
5099 case PK_KP2
: xkey
= 'r'; break;
5100 case PK_KP3
: xkey
= 's'; break;
5101 case PK_KP4
: xkey
= 't'; break;
5102 case PK_KP5
: xkey
= 'u'; break;
5103 case PK_KP6
: xkey
= 'v'; break;
5104 case PK_KP7
: xkey
= 'w'; break;
5105 case PK_KP8
: xkey
= 'x'; break;
5106 case PK_KP9
: xkey
= 'y'; break;
5107 case PK_KPDECIMAL
: xkey
= 'n'; break;
5108 case PK_KPENTER
: xkey
= 'M'; break;
5109 default: break; /* else gcc warns `enum value not used' */
5111 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& tlen
> 0) {
5113 * xterm can't see the layout of the keypad, so it has
5114 * to rely on the X keysyms returned by the keys.
5115 * Hence, we look at the strings here, not the PuTTY
5116 * keysyms (which describe the layout).
5120 if (modifiers
& PKM_SHIFT
)
5125 case '/': xkey
= 'o'; break;
5126 case '*': xkey
= 'j'; break;
5127 case '-': xkey
= 'm'; break;
5131 * In all other modes, we try to retain the layout of
5132 * the DEC keypad in application mode.
5136 /* This key covers the '-' and ',' keys on a VT220 */
5137 if (modifiers
& PKM_SHIFT
)
5138 xkey
= 'm'; /* VT220 '-' */
5140 xkey
= 'l'; /* VT220 ',' */
5142 case PK_KPMINUS
: xkey
= 'm'; break;
5143 case PK_KPCOMMA
: xkey
= 'l'; break;
5144 default: break; /* else gcc warns `enum value not used' */
5149 if (term
->vt52_mode
) {
5150 if (xkey
>= 'P' && xkey
<= 'S')
5151 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5153 p
+= sprintf((char *) p
, "\x1B?%c", xkey
);
5155 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5158 /* Not in application mode -- treat the number pad as arrow keys? */
5159 if ((flags
& PKF_NUMLOCK
) == 0) {
5161 case PK_KP0
: keysym
= PK_INSERT
; break;
5162 case PK_KP1
: keysym
= PK_END
; break;
5163 case PK_KP2
: keysym
= PK_DOWN
; break;
5164 case PK_KP3
: keysym
= PK_PAGEDOWN
; break;
5165 case PK_KP4
: keysym
= PK_LEFT
; break;
5166 case PK_KP5
: keysym
= PK_REST
; break;
5167 case PK_KP6
: keysym
= PK_RIGHT
; break;
5168 case PK_KP7
: keysym
= PK_HOME
; break;
5169 case PK_KP8
: keysym
= PK_UP
; break;
5170 case PK_KP9
: keysym
= PK_PAGEUP
; break;
5171 default: break; /* else gcc warns `enum value not used' */
5176 /* Miscellaneous keys */
5183 *p
++ = (term
->cfg
.bksp_is_delete ?
0x7F : 0x08);
5184 else if (modifiers
== PKM_SHIFT
)
5185 /* We do the opposite of what is configured */
5186 *p
++ = (term
->cfg
.bksp_is_delete ?
0x08 : 0x7F);
5192 else if (modifiers
== PKM_SHIFT
)
5193 *p
++ = 0x1B, *p
++ = '[', *p
++ = 'Z';
5196 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5198 if (modifiers
== PKM_CONTROL
)
5203 case PK_KPENTER
: /* Odd keypad modes handled above */
5204 if (modifiers
== 0) {
5206 if (term
->cr_lf_return
)
5210 default: break; /* else gcc warns `enum value not used' */
5213 /* SCO function keys and editing keys */
5214 if (term
->cfg
.funky_type
== FUNKY_SCO
) {
5215 if (PK_ISFKEY(keysym
) && keysym
<= PK_F12
) {
5216 static char const codes
[] =
5217 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5218 int index
= keysym
- PK_F1
;
5220 if (modifiers
& PKM_SHIFT
) index
+= 12;
5221 if (modifiers
& PKM_CONTROL
) index
+= 24;
5222 p
+= sprintf((char *) p
, "\x1B[%c", codes
[index
]);
5225 if (PK_ISEDITING(keysym
)) {
5229 case PK_DELETE
: *p
++ = 0x7f; goto done
;
5230 case PK_HOME
: xkey
= 'H'; break;
5231 case PK_INSERT
: xkey
= 'L'; break;
5232 case PK_END
: xkey
= 'F'; break;
5233 case PK_PAGEUP
: xkey
= 'I'; break;
5234 case PK_PAGEDOWN
: xkey
= 'G'; break;
5235 default: break; /* else gcc warns `enum value not used' */
5237 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
5241 if (PK_ISEDITING(keysym
) && (modifiers
& PKM_SHIFT
) == 0) {
5244 if (term
->cfg
.funky_type
== FUNKY_XTERM
) {
5245 /* Xterm shuffles these keys, apparently. */
5247 case PK_HOME
: keysym
= PK_INSERT
; break;
5248 case PK_INSERT
: keysym
= PK_HOME
; break;
5249 case PK_DELETE
: keysym
= PK_END
; break;
5250 case PK_END
: keysym
= PK_PAGEUP
; break;
5251 case PK_PAGEUP
: keysym
= PK_DELETE
; break;
5252 case PK_PAGEDOWN
: keysym
= PK_PAGEDOWN
; break;
5253 default: break; /* else gcc warns `enum value not used' */
5258 if (term
->cfg
.rxvt_homeend
&&
5259 (keysym
== PK_HOME
|| keysym
== PK_END
)) {
5260 p
+= sprintf((char *) p
, keysym
== PK_HOME ?
"\x1B[H" : "\x1BOw");
5264 if (term
->vt52_mode
) {
5268 * A real VT52 doesn't have these, and a VT220 doesn't
5269 * send anything for them in VT52 mode.
5272 case PK_HOME
: xkey
= 'H'; break;
5273 case PK_INSERT
: xkey
= 'L'; break;
5274 case PK_DELETE
: xkey
= 'M'; break;
5275 case PK_END
: xkey
= 'E'; break;
5276 case PK_PAGEUP
: xkey
= 'I'; break;
5277 case PK_PAGEDOWN
: xkey
= 'G'; break;
5278 default: xkey
=0; break; /* else gcc warns `enum value not used'*/
5280 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5285 case PK_HOME
: code
= 1; break;
5286 case PK_INSERT
: code
= 2; break;
5287 case PK_DELETE
: code
= 3; break;
5288 case PK_END
: code
= 4; break;
5289 case PK_PAGEUP
: code
= 5; break;
5290 case PK_PAGEDOWN
: code
= 6; break;
5291 default: code
= 0; break; /* else gcc warns `enum value not used' */
5293 p
+= sprintf((char *) p
, "\x1B[%d~", code
);
5297 if (PK_ISFKEY(keysym
)) {
5298 /* Map Shift+F1-F10 to F11-F20 */
5299 if (keysym
>= PK_F1
&& keysym
<= PK_F10
&& (modifiers
& PKM_SHIFT
))
5301 if ((term
->vt52_mode
|| term
->cfg
.funky_type
== FUNKY_VT100P
) &&
5303 /* XXX This overrides the XTERM/VT52 mode below */
5305 if (keysym
>= PK_F6
) offt
++;
5306 if (keysym
>= PK_F12
) offt
++;
5307 p
+= sprintf((char *) p
, term
->vt52_mode ?
"\x1B%c" : "\x1BO%c",
5308 'P' + keysym
- PK_F1
- offt
);
5311 if (term
->cfg
.funky_type
== FUNKY_LINUX
&& keysym
<= PK_F5
) {
5312 p
+= sprintf((char *) p
, "\x1B[[%c", 'A' + keysym
- PK_F1
);
5315 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& keysym
<= PK_F4
) {
5316 if (term
->vt52_mode
)
5317 p
+= sprintf((char *) p
, "\x1B%c", 'P' + keysym
- PK_F1
);
5319 p
+= sprintf((char *) p
, "\x1BO%c", 'P' + keysym
- PK_F1
);
5322 p
+= sprintf((char *) p
, "\x1B[%d~", 11 + keysym
- PK_F1
);
5326 if (PK_ISCURSOR(keysym
)) {
5330 case PK_UP
: xkey
= 'A'; break;
5331 case PK_DOWN
: xkey
= 'B'; break;
5332 case PK_RIGHT
: xkey
= 'C'; break;
5333 case PK_LEFT
: xkey
= 'D'; break;
5334 case PK_REST
: xkey
= 'G'; break; /* centre key on number pad */
5335 default: xkey
= 0; break; /* else gcc warns `enum value not used' */
5337 if (term
->vt52_mode
)
5338 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5340 int app_flg
= (term
->app_cursor_keys
&& !term
->cfg
.no_applic_c
);
5342 /* Useful mapping of Ctrl-arrows */
5343 if (modifiers
== PKM_CONTROL
)
5347 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5349 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
5355 if (p
> output
|| tlen
> 0) {
5357 * Interrupt an ongoing paste. I'm not sure
5358 * this is sensible, but for the moment it's
5359 * preferable to having to faff about buffering
5365 * We need not bother about stdin backlogs
5366 * here, because in GUI PuTTY we can't do
5367 * anything about it anyway; there's no means
5368 * of asking Windows to hold off on KEYDOWN
5369 * messages. We _have_ to buffer everything
5372 term_seen_key_event(term
);
5376 fprintf(stderr
, "sending ESC\n");
5378 ldisc_send(term
->ldisc
, "\x1b", 1, 1);
5383 fprintf(stderr
, "sending %d bytes:", p
- output
);
5384 for (i
= 0; i
< p
- output
; i
++)
5385 fprintf(stderr
, " %02x", output
[i
]);
5386 fprintf(stderr
, "\n");
5388 ldisc_send(term
->ldisc
, output
, p
- output
, 1);
5389 } else if (tlen
> 0) {
5391 fprintf(stderr
, "sending %d unichars:", tlen
);
5392 for (i
= 0; i
< tlen
; i
++)
5393 fprintf(stderr
, " %04x", (unsigned) text
[i
]);
5394 fprintf(stderr
, "\n");
5396 luni_send(term
->ldisc
, text
, tlen
, 1);
5401 void term_nopaste(Terminal
*term
)
5403 if (term
->paste_len
== 0)
5405 sfree(term
->paste_buffer
);
5406 term
->paste_buffer
= NULL
;
5407 term
->paste_len
= 0;
5410 int term_paste_pending(Terminal
*term
)
5412 return term
->paste_len
!= 0;
5415 void term_paste(Terminal
*term
)
5417 long now
, paste_diff
;
5419 if (term
->paste_len
== 0)
5422 /* Don't wait forever to paste */
5423 if (term
->paste_hold
) {
5424 now
= GETTICKCOUNT();
5425 paste_diff
= now
- term
->last_paste
;
5426 if (paste_diff
>= 0 && paste_diff
< 450)
5429 term
->paste_hold
= 0;
5431 while (term
->paste_pos
< term
->paste_len
) {
5433 while (n
+ term
->paste_pos
< term
->paste_len
) {
5434 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
5438 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
5439 term
->paste_pos
+= n
;
5441 if (term
->paste_pos
< term
->paste_len
) {
5442 term
->paste_hold
= 1;
5446 sfree(term
->paste_buffer
);
5447 term
->paste_buffer
= NULL
;
5448 term
->paste_len
= 0;
5451 static void deselect(Terminal
*term
)
5453 term
->selstate
= NO_SELECTION
;
5454 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
5457 void term_deselect(Terminal
*term
)
5463 int term_ldisc(Terminal
*term
, int option
)
5465 if (option
== LD_ECHO
)
5466 return term
->term_echoing
;
5467 if (option
== LD_EDIT
)
5468 return term
->term_editing
;
5472 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
5474 bufchain_add(&term
->inbuf
, data
, len
);
5476 if (!term
->in_term_out
) {
5477 term
->in_term_out
= TRUE
;
5478 term_blink(term
, 1);
5480 term
->in_term_out
= FALSE
;
5484 * term_out() always completely empties inbuf. Therefore,
5485 * there's no reason at all to return anything other than zero
5486 * from this function, because there _can't_ be a question of
5487 * the remote side needing to wait until term_out() has cleared
5490 * This is a slightly suboptimal way to deal with SSH2 - in
5491 * principle, the window mechanism would allow us to continue
5492 * to accept data on forwarded ports and X connections even
5493 * while the terminal processing was going slowly - but we
5494 * can't do the 100% right thing without moving the terminal
5495 * processing into a separate thread, and that might hurt
5496 * portability. So we manage stdout buffering the old SSH1 way:
5497 * if the terminal processing goes slowly, the whole SSH
5498 * connection stops accepting data until it's ready.
5500 * In practice, I can't imagine this causing serious trouble.
5505 void term_provide_logctx(Terminal
*term
, void *logctx
)
5507 term
->logctx
= logctx
;