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 UPDATE_DELAY ((TICKSPERSEC+49)/50)/* ticks to defer window update */
47 #define TBLINK_DELAY ((TICKSPERSEC*9+19)/20)/* ticks between text blinks*/
48 #define CBLINK_DELAY (CURSORBLINK) /* ticks between cursor blinks */
49 #define VBELL_DELAY (VBELL_TIMEOUT) /* visual bell timeout in ticks */
51 #define compatibility(x) \
52 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
53 term->termstate=TOPLEVEL; \
56 #define compatibility2(x,y) \
57 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
58 term->termstate=TOPLEVEL; \
62 #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
64 const char sco2ansicolour
[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
66 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
67 const wchar_t sel_nl
[] = SEL_NL
;
70 * Fetch the character at a particular position in a line array,
71 * for purposes of `wordtype'. The reason this isn't just a simple
72 * array reference is that if the character we find is UCSWIDE,
73 * then we must look one space further to the left.
75 #define UCSGET(a, x) \
76 ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr )
79 * Detect the various aliases of U+0020 SPACE.
81 #define IS_SPACE_CHR(chr) \
82 ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20))
87 #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0)
90 * Internal prototypes.
92 static void resizeline(Terminal
*, termline
*, int);
93 static termline
*lineptr(Terminal
*, int, int, int);
94 static void unlineptr(termline
*);
95 static void do_paint(Terminal
*, Context
, int);
96 static void erase_lots(Terminal
*, int, int, int);
97 static void swap_screen(Terminal
*, int, int, int);
98 static void update_sbar(Terminal
*);
99 static void deselect(Terminal
*);
100 static void term_print_finish(Terminal
*);
101 #ifdef OPTIMISE_SCROLL
102 static void scroll_display(Terminal
*, int, int, int);
103 #endif /* OPTIMISE_SCROLL */
105 static termline
*newline(Terminal
*term
, int cols
, int bce
)
110 line
= snew(termline
);
111 line
->chars
= snewn(cols
, termchar
);
112 for (j
= 0; j
< cols
; j
++)
113 line
->chars
[j
] = (bce ? term
->erase_char
: term
->basic_erase_char
);
114 line
->cols
= line
->size
= cols
;
115 line
->lattr
= LATTR_NORM
;
116 line
->temporary
= FALSE
;
122 static void freeline(termline
*line
)
130 static void unlineptr(termline
*line
)
137 * Diagnostic function: verify that a termline has a correct
138 * combining character structure.
140 * XXX-REMOVE-BEFORE-RELEASE: This is a performance-intensive
141 * check. Although it's currently really useful for getting all the
142 * bugs out of the new cc stuff, it will want to be absent when we
143 * make a proper release.
145 static void cc_check(termline
*line
)
147 unsigned char *flags
;
150 assert(line
->size
>= line
->cols
);
152 flags
= snewn(line
->size
, unsigned char);
154 for (i
= 0; i
< line
->size
; i
++)
155 flags
[i
] = (i
< line
->cols
);
157 for (i
= 0; i
< line
->cols
; i
++) {
159 while (line
->chars
[j
].cc_next
) {
160 j
+= line
->chars
[j
].cc_next
;
161 assert(j
>= line
->cols
&& j
< line
->size
);
170 assert(j
>= line
->cols
&& j
< line
->size
);
173 if (line
->chars
[j
].cc_next
)
174 j
+= line
->chars
[j
].cc_next
;
181 for (i
= 0; i
< line
->size
; i
++)
182 j
+= (flags
[i
] != 0);
184 assert(j
== line
->size
);
190 * Add a combining character to a character cell.
192 static void add_cc(termline
*line
, int col
, unsigned long chr
)
196 assert(col
>= 0 && col
< line
->cols
);
199 * Start by extending the cols array if the free list is empty.
201 if (!line
->cc_free
) {
203 line
->size
+= 16 + (line
->size
- line
->cols
) / 2;
204 line
->chars
= sresize(line
->chars
, line
->size
, termchar
);
206 while (n
< line
->size
) {
207 if (n
+1 < line
->size
)
208 line
->chars
[n
].cc_next
= 1;
210 line
->chars
[n
].cc_next
= 0;
216 * Now walk the cc list of the cell in question.
218 while (line
->chars
[col
].cc_next
)
219 col
+= line
->chars
[col
].cc_next
;
222 * `col' now points at the last cc currently in this cell; so
223 * we simply add another one.
225 newcc
= line
->cc_free
;
226 if (line
->chars
[newcc
].cc_next
)
227 line
->cc_free
= newcc
+ line
->chars
[newcc
].cc_next
;
230 line
->chars
[newcc
].cc_next
= 0;
231 line
->chars
[newcc
].chr
= chr
;
232 line
->chars
[col
].cc_next
= newcc
- col
;
234 cc_check(line
); /* XXX-REMOVE-BEFORE-RELEASE */
238 * Clear the combining character list in a character cell.
240 static void clear_cc(termline
*line
, int col
)
242 int oldfree
, origcol
= col
;
244 assert(col
>= 0 && col
< line
->cols
);
246 if (!line
->chars
[col
].cc_next
)
247 return; /* nothing needs doing */
249 oldfree
= line
->cc_free
;
250 line
->cc_free
= col
+ line
->chars
[col
].cc_next
;
251 while (line
->chars
[col
].cc_next
)
252 col
+= line
->chars
[col
].cc_next
;
254 line
->chars
[col
].cc_next
= oldfree
- col
;
256 line
->chars
[col
].cc_next
= 0;
258 line
->chars
[origcol
].cc_next
= 0;
260 cc_check(line
); /* XXX-REMOVE-BEFORE-RELEASE */
264 * Compare two character cells for equality. Special case required
265 * in do_paint() where we override what we expect the chr and attr
268 static int termchars_equal_override(termchar
*a
, termchar
*b
,
269 unsigned long bchr
, unsigned long battr
)
274 if (a
->attr
!= battr
)
276 while (a
->cc_next
|| b
->cc_next
) {
277 if (!a
->cc_next
|| !b
->cc_next
)
278 return FALSE
; /* one cc-list ends, other does not */
281 if (a
->chr
!= b
->chr
)
287 static int termchars_equal(termchar
*a
, termchar
*b
)
289 return termchars_equal_override(a
, b
, b
->chr
, b
->attr
);
293 * Copy a character cell. (Requires a pointer to the destination
294 * termline, so as to access its free list.)
296 static void copy_termchar(termline
*destline
, int x
, termchar
*src
)
298 clear_cc(destline
, x
);
300 destline
->chars
[x
] = *src
; /* copy everything except cc-list */
301 destline
->chars
[x
].cc_next
= 0; /* and make sure this is zero */
303 while (src
->cc_next
) {
305 add_cc(destline
, x
, src
->chr
);
308 cc_check(destline
); /* XXX-REMOVE-BEFORE-RELEASE */
312 * Move a character cell within its termline.
314 static void move_termchar(termline
*line
, termchar
*dest
, termchar
*src
)
316 /* First clear the cc list from the original char, just in case. */
317 clear_cc(line
, dest
- line
->chars
);
319 /* Move the character cell and adjust its cc_next. */
320 *dest
= *src
; /* copy everything except cc-list */
322 dest
->cc_next
= src
->cc_next
- (dest
-src
);
324 /* Ensure the original cell doesn't have a cc list. */
327 cc_check(line
); /* XXX-REMOVE-BEFORE-RELEASE */
331 * Compress and decompress a termline into an RLE-based format for
332 * storing in scrollback. (Since scrollback almost never needs to
333 * be modified and exists in huge quantities, this is a sensible
334 * tradeoff, particularly since it allows us to continue adding
335 * features to the main termchar structure without proportionally
336 * bloating the terminal emulator's memory footprint unless those
337 * features are in constant use.)
343 static void add(struct buf
*b
, unsigned char c
)
345 if (b
->len
>= b
->size
) {
346 b
->size
= (b
->len
* 3 / 2) + 512;
347 b
->data
= sresize(b
->data
, b
->size
, unsigned char);
349 b
->data
[b
->len
++] = c
;
351 static int get(struct buf
*b
)
353 return b
->data
[b
->len
++];
355 static void makerle(struct buf
*b
, termline
*ldata
,
356 void (*makeliteral
)(struct buf
*b
, termchar
*c
,
357 unsigned long *state
))
359 int hdrpos
, hdrsize
, n
, prevlen
, prevpos
, thislen
, thispos
, prev2
;
360 termchar
*c
= ldata
->chars
;
361 unsigned long state
= 0, oldstate
;
368 prevlen
= prevpos
= 0;
373 makeliteral(b
, c
++, &state
);
374 thislen
= b
->len
- thispos
;
375 if (thislen
== prevlen
&&
376 !memcmp(b
->data
+ prevpos
, b
->data
+ thispos
, thislen
)) {
378 * This literal precisely matches the previous one.
379 * Turn it into a run if it's worthwhile.
381 * With one-byte literals, it costs us two bytes to
382 * encode a run, plus another byte to write the header
383 * to resume normal output; so a three-element run is
384 * neutral, and anything beyond that is unconditionally
385 * worthwhile. With two-byte literals or more, even a
388 if (thislen
> 1 || prev2
) {
392 * It's worth encoding a run. Start at prevpos,
393 * unless hdrsize==0 in which case we can back up
394 * another one and start by overwriting hdrpos.
397 hdrsize
--; /* remove the literal at prevpos */
401 prevpos
-= prevlen
;/* and possibly another one */
405 assert(prevpos
== hdrpos
+ 1);
407 b
->len
= prevpos
+prevlen
;
409 memmove(b
->data
+ prevpos
+1, b
->data
+ prevpos
, prevlen
);
411 b
->len
= prevpos
+prevlen
+1;
413 * Terminate the previous run of ordinary
416 assert(hdrsize
>= 1 && hdrsize
<= 128);
417 b
->data
[hdrpos
] = hdrsize
- 1;
420 runlen
= prev2 ?
3 : 2;
422 while (n
> 0 && runlen
< 129) {
426 makeliteral(b
, c
, &state
);
427 tmplen
= b
->len
- tmppos
;
429 if (tmplen
!= thislen
||
430 memcmp(b
->data
+ runpos
+1, b
->data
+ tmppos
, tmplen
)) {
432 break; /* run over */
437 assert(runlen
>= 2 && runlen
<= 129);
438 b
->data
[runpos
] = runlen
+ 0x80 - 2;
443 /* And ensure this run doesn't interfere with the next. */
444 prevlen
= prevpos
= 0;
450 * Just flag that the previous two literals were
451 * identical, in case we find a third identical one
452 * we want to turn into a run.
465 * This character isn't (yet) part of a run. Add it to
469 if (hdrsize
== 128) {
470 b
->data
[hdrpos
] = hdrsize
- 1;
474 prevlen
= prevpos
= 0;
483 assert(hdrsize
<= 128);
484 b
->data
[hdrpos
] = hdrsize
- 1;
489 static void makeliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
492 * My encoding for characters is UTF-8-like, in that it stores
493 * 7-bit ASCII in one byte and uses high-bit-set bytes as
494 * introducers to indicate a longer sequence. However, it's
495 * unlike UTF-8 in that it doesn't need to be able to
496 * resynchronise, and therefore I don't want to waste two bits
497 * per byte on having recognisable continuation characters.
498 * Also I don't want to rule out the possibility that I may one
499 * day use values 0x80000000-0xFFFFFFFF for interesting
500 * purposes, so unlike UTF-8 I need a full 32-bit range.
501 * Accordingly, here is my encoding:
503 * 00000000-0000007F: 0xxxxxxx (but see below)
504 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
505 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
506 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
507 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
509 * (`Z' is like `x' but is always going to be zero since the
510 * values I'm encoding don't go above 2^32. In principle the
511 * five-byte form of the encoding could extend to 2^35, and
512 * there could be six-, seven-, eight- and nine-byte forms as
513 * well to allow up to 64-bit values to be encoded. But that's
514 * completely unnecessary for these purposes!)
516 * The encoding as written above would be very simple, except
517 * that 7-bit ASCII can occur in several different ways in the
518 * terminal data; sometimes it crops up in the D800 page
519 * (CSET_ASCII) but at other times it's in the 0000 page (real
520 * Unicode). Therefore, this encoding is actually _stateful_:
521 * the one-byte encoding of 00-7F actually indicates `reuse the
522 * upper three bytes of the last character', and to encode an
523 * absolute value of 00-7F you need to use the two-byte form
526 if ((c
->chr
& ~0x7F) == *state
) {
527 add(b
, (unsigned char)(c
->chr
& 0x7F));
528 } else if (c
->chr
< 0x4000) {
529 add(b
, (unsigned char)(((c
->chr
>> 8) & 0x3F) | 0x80));
530 add(b
, (unsigned char)(c
->chr
& 0xFF));
531 } else if (c
->chr
< 0x200000) {
532 add(b
, (unsigned char)(((c
->chr
>> 16) & 0x1F) | 0xC0));
533 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
534 add(b
, (unsigned char)(c
->chr
& 0xFF));
535 } else if (c
->chr
< 0x10000000) {
536 add(b
, (unsigned char)(((c
->chr
>> 24) & 0x0F) | 0xE0));
537 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
538 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
539 add(b
, (unsigned char)(c
->chr
& 0xFF));
542 add(b
, (unsigned char)((c
->chr
>> 24) & 0xFF));
543 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
544 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
545 add(b
, (unsigned char)(c
->chr
& 0xFF));
547 *state
= c
->chr
& ~0xFF;
549 static void makeliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
552 * My encoding for attributes is 16-bit-granular and assumes
553 * that the top bit of the word is never required. I either
554 * store a two-byte value with the top bit clear (indicating
555 * just that value), or a four-byte value with the top bit set
556 * (indicating the same value with its top bit clear).
558 * However, first I permute the bits of the attribute value, so
559 * that the eight bits of colour (four in each of fg and bg)
560 * which are never non-zero unless xterm 256-colour mode is in
561 * use are placed higher up the word than everything else. This
562 * ensures that attribute values remain 16-bit _unless_ the
563 * user uses extended colour.
565 unsigned attr
, colourbits
;
569 assert(ATTR_BGSHIFT
> ATTR_FGSHIFT
);
571 colourbits
= (attr
>> (ATTR_BGSHIFT
+ 4)) & 0xF;
573 colourbits
|= (attr
>> (ATTR_FGSHIFT
+ 4)) & 0xF;
575 attr
= (((attr
>> (ATTR_BGSHIFT
+ 8)) << (ATTR_BGSHIFT
+ 4)) |
576 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
577 attr
= (((attr
>> (ATTR_FGSHIFT
+ 8)) << (ATTR_FGSHIFT
+ 4)) |
578 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
580 attr
|= (colourbits
<< (32-9));
583 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
584 add(b
, (unsigned char)(attr
& 0xFF));
586 add(b
, (unsigned char)(((attr
>> 24) & 0x7F) | 0x80));
587 add(b
, (unsigned char)((attr
>> 16) & 0xFF));
588 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
589 add(b
, (unsigned char)(attr
& 0xFF));
592 static void makeliteral_cc(struct buf
*b
, termchar
*c
, unsigned long *state
)
595 * For combining characters, I just encode a bunch of ordinary
596 * chars using makeliteral_chr, and terminate with a \0
597 * character (which I know won't come up as a combining char
600 * I don't use the stateful encoding in makeliteral_chr.
602 unsigned long zstate
;
611 makeliteral_chr(b
, c
, &zstate
);
616 makeliteral_chr(b
, &z
, &zstate
);
619 static termline
*decompressline(unsigned char *data
, int *bytes_used
);
621 static unsigned char *compressline(termline
*ldata
)
623 struct buf buffer
= { NULL
, 0, 0 }, *b
= &buffer
;
626 * First, store the column count, 7 bits at a time, least
627 * significant `digit' first, with the high bit set on all but
633 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
636 add(b
, (unsigned char)(n
));
640 * Next store the lattrs; same principle.
643 int n
= ldata
->lattr
;
645 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
648 add(b
, (unsigned char)(n
));
652 * Now we store a sequence of separate run-length encoded
653 * fragments, each containing exactly as many symbols as there
654 * are columns in the ldata.
656 * All of these have a common basic format:
658 * - a byte 00-7F indicates that X+1 literals follow it
659 * - a byte 80-FF indicates that a single literal follows it
660 * and expects to be repeated (X-0x80)+2 times.
662 * The format of the `literals' varies between the fragments.
664 makerle(b
, ldata
, makeliteral_chr
);
665 makerle(b
, ldata
, makeliteral_attr
);
666 makerle(b
, ldata
, makeliteral_cc
);
669 * Diagnostics: ensure that the compressed data really does
670 * decompress to the right thing.
672 * XXX-REMOVE-BEFORE-RELEASE: This is a bit performance-heavy
673 * to be leaving in production code.
675 #ifndef CHECK_SB_COMPRESSION
681 #ifdef DIAGNOSTIC_SB_COMPRESSION
682 for (i
= 0; i
< b
->len
; i
++) {
683 printf(" %02x ", b
->data
[i
]);
688 dcl
= decompressline(b
->data
, &dused
);
689 assert(b
->len
== dused
);
690 assert(ldata
->cols
== dcl
->cols
);
691 assert(ldata
->lattr
== dcl
->lattr
);
692 for (i
= 0; i
< ldata
->cols
; i
++)
693 assert(termchars_equal(&ldata
->chars
[i
], &dcl
->chars
[i
]));
695 #ifdef DIAGNOSTIC_SB_COMPRESSION
696 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
697 ldata
->cols
, 4 * ldata
->cols
, dused
,
698 (double)dused
/ (4 * ldata
->cols
));
706 * Trim the allocated memory so we don't waste any, and return.
708 return sresize(b
->data
, b
->len
, unsigned char);
711 static void readrle(struct buf
*b
, termline
*ldata
,
712 void (*readliteral
)(struct buf
*b
, termchar
*c
,
713 termline
*ldata
, unsigned long *state
))
716 unsigned long state
= 0;
718 while (n
< ldata
->cols
) {
724 int pos
= b
->len
, count
= hdr
+ 2 - 0x80;
726 assert(n
< ldata
->cols
);
728 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
732 /* Just a sequence of consecutive literals. */
736 assert(n
< ldata
->cols
);
737 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
743 assert(n
== ldata
->cols
);
745 static void readliteral_chr(struct buf
*b
, termchar
*c
, termline
*ldata
,
746 unsigned long *state
)
751 * 00000000-0000007F: 0xxxxxxx
752 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
753 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
754 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
755 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
760 c
->chr
= byte
| *state
;
761 } else if (byte
< 0xC0) {
762 c
->chr
= (byte
&~ 0xC0) << 8;
764 } else if (byte
< 0xE0) {
765 c
->chr
= (byte
&~ 0xE0) << 16;
766 c
->chr
|= get(b
) << 8;
768 } else if (byte
< 0xF0) {
769 c
->chr
= (byte
&~ 0xF0) << 24;
770 c
->chr
|= get(b
) << 16;
771 c
->chr
|= get(b
) << 8;
774 assert(byte
== 0xF0);
775 c
->chr
= get(b
) << 24;
776 c
->chr
|= get(b
) << 16;
777 c
->chr
|= get(b
) << 8;
780 *state
= c
->chr
& ~0xFF;
782 static void readliteral_attr(struct buf
*b
, termchar
*c
, termline
*ldata
,
783 unsigned long *state
)
785 unsigned val
, attr
, colourbits
;
797 colourbits
= (val
>> (32-9)) & 0xFF;
798 attr
= (val
& ((1<<(32-9))-1));
800 attr
= (((attr
>> (ATTR_FGSHIFT
+ 4)) << (ATTR_FGSHIFT
+ 8)) |
801 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
802 attr
= (((attr
>> (ATTR_BGSHIFT
+ 4)) << (ATTR_BGSHIFT
+ 8)) |
803 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
805 attr
|= (colourbits
>> 4) << (ATTR_BGSHIFT
+ 4);
806 attr
|= (colourbits
& 0xF) << (ATTR_FGSHIFT
+ 4);
810 static void readliteral_cc(struct buf
*b
, termchar
*c
, termline
*ldata
,
811 unsigned long *state
)
814 unsigned long zstate
;
815 int x
= c
- ldata
->chars
;
821 readliteral_chr(b
, &n
, ldata
, &zstate
);
824 add_cc(ldata
, x
, n
.chr
);
828 static termline
*decompressline(unsigned char *data
, int *bytes_used
)
830 int ncols
, byte
, shift
;
831 struct buf buffer
, *b
= &buffer
;
838 * First read in the column count.
843 ncols
|= (byte
& 0x7F) << shift
;
845 } while (byte
& 0x80);
848 * Now create the output termline.
850 ldata
= snew(termline
);
851 ldata
->chars
= snewn(ncols
, termchar
);
852 ldata
->cols
= ldata
->size
= ncols
;
853 ldata
->temporary
= TRUE
;
857 * We must set all the cc pointers in ldata->chars to 0 right
858 * now, so that cc diagnostics that verify the integrity of the
859 * whole line will make sense while we're in the middle of
864 for (i
= 0; i
< ldata
->cols
; i
++)
865 ldata
->chars
[i
].cc_next
= 0;
869 * Now read in the lattr.
871 ldata
->lattr
= shift
= 0;
874 ldata
->lattr
|= (byte
& 0x7F) << shift
;
876 } while (byte
& 0x80);
879 * Now we read in each of the RLE streams in turn.
881 readrle(b
, ldata
, readliteral_chr
);
882 readrle(b
, ldata
, readliteral_attr
);
883 readrle(b
, ldata
, readliteral_cc
);
885 /* Return the number of bytes read, for diagnostic purposes. */
887 *bytes_used
= b
->len
;
893 * Resize a line to make it `cols' columns wide.
895 static void resizeline(Terminal
*term
, termline
*line
, int cols
)
899 if (line
->cols
!= cols
) {
901 oldcols
= line
->cols
;
904 * This line is the wrong length, which probably means it
905 * hasn't been accessed since a resize. Resize it now.
907 * First, go through all the characters that will be thrown
908 * out in the resize (if we're shrinking the line) and
909 * return their cc lists to the cc free list.
911 for (i
= cols
; i
< oldcols
; i
++)
915 * If we're shrinking the line, we now bodily move the
916 * entire cc section from where it started to where it now
917 * needs to be. (We have to do this before the resize, so
918 * that the data we're copying is still there. However, if
919 * we're expanding, we have to wait until _after_ the
920 * resize so that the space we're copying into is there.)
923 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
924 (line
->size
- line
->cols
) * TSIZE
);
927 * Now do the actual resize, leaving the _same_ amount of
928 * cc space as there was to begin with.
930 line
->size
+= cols
- oldcols
;
931 line
->chars
= sresize(line
->chars
, line
->size
, TTYPE
);
935 * If we're expanding the line, _now_ we move the cc
939 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
940 (line
->size
- line
->cols
) * TSIZE
);
943 * Go through what's left of the original line, and adjust
944 * the first cc_next pointer in each list. (All the
945 * subsequent ones are still valid because they are
946 * relative offsets within the cc block.) Also do the same
947 * to the head of the cc_free list.
949 for (i
= 0; i
< oldcols
&& i
< cols
; i
++)
950 if (line
->chars
[i
].cc_next
)
951 line
->chars
[i
].cc_next
+= cols
- oldcols
;
953 line
->cc_free
+= cols
- oldcols
;
956 * And finally fill in the new space with erase chars. (We
957 * don't have to worry about cc lists here, because we
958 * _know_ the erase char doesn't have one.)
960 for (i
= oldcols
; i
< cols
; i
++)
961 line
->chars
[i
] = term
->basic_erase_char
;
963 cc_check(line
); /* XXX-REMOVE-BEFORE-RELEASE */
968 * Get the number of lines in the scrollback.
970 static int sblines(Terminal
*term
)
972 int sblines
= count234(term
->scrollback
);
973 if (term
->cfg
.erase_to_scrollback
&&
974 term
->alt_which
&& term
->alt_screen
) {
975 sblines
+= term
->alt_sblines
;
981 * Retrieve a line of the screen or of the scrollback, according to
982 * whether the y coordinate is non-negative or negative
985 static termline
*lineptr(Terminal
*term
, int y
, int lineno
, int screen
)
992 whichtree
= term
->screen
;
999 if (term
->cfg
.erase_to_scrollback
&&
1000 term
->alt_which
&& term
->alt_screen
) {
1001 altlines
= term
->alt_sblines
;
1003 if (y
< -altlines
) {
1004 whichtree
= term
->scrollback
;
1005 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
1007 whichtree
= term
->alt_screen
;
1008 treeindex
= y
+ term
->alt_sblines
;
1009 /* treeindex = y + count234(term->alt_screen); */
1012 if (whichtree
== term
->scrollback
) {
1013 unsigned char *cline
= index234(whichtree
, treeindex
);
1014 line
= decompressline(cline
, NULL
);
1016 line
= index234(whichtree
, treeindex
);
1019 /* We assume that we don't screw up and retrieve something out of range. */
1020 assert(line
!= NULL
);
1022 resizeline(term
, line
, term
->cols
);
1023 /* FIXME: should we sort the compressed scrollback out here? */
1028 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1029 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1031 static void term_schedule_tblink(Terminal
*term
);
1032 static void term_schedule_cblink(Terminal
*term
);
1034 static void term_timer(void *ctx
, long now
)
1036 Terminal
*term
= (Terminal
*)ctx
;
1039 if (term
->tblink_pending
&& now
- term
->next_tblink
>= 0) {
1040 term
->tblinker
= !term
->tblinker
;
1041 term
->tblink_pending
= FALSE
;
1042 term_schedule_tblink(term
);
1046 if (term
->cblink_pending
&& now
- term
->next_cblink
>= 0) {
1047 term
->cblinker
= !term
->cblinker
;
1048 term
->cblink_pending
= FALSE
;
1049 term_schedule_cblink(term
);
1053 if (term
->in_vbell
&& now
- term
->vbell_end
>= 0) {
1054 term
->in_vbell
= FALSE
;
1059 (term
->window_update_pending
&& now
- term
->next_update
>= 0))
1063 static void term_schedule_update(Terminal
*term
)
1065 if (!term
->window_update_pending
) {
1066 term
->window_update_pending
= TRUE
;
1067 term
->next_update
= schedule_timer(UPDATE_DELAY
, term_timer
, term
);
1072 * Call this whenever the terminal window state changes, to queue
1075 static void seen_disp_event(Terminal
*term
)
1077 term
->seen_disp_event
= TRUE
; /* for scrollback-reset-on-activity */
1078 term_schedule_update(term
);
1082 * Call when the terminal's blinking-text settings change, or when
1083 * a text blink has just occurred.
1085 static void term_schedule_tblink(Terminal
*term
)
1087 if (term
->blink_is_real
) {
1088 if (!term
->tblink_pending
)
1089 term
->next_tblink
= schedule_timer(TBLINK_DELAY
, term_timer
, term
);
1090 term
->tblink_pending
= TRUE
;
1092 term
->tblinker
= 1; /* reset when not in use */
1093 term
->tblink_pending
= FALSE
;
1098 * Likewise with cursor blinks.
1100 static void term_schedule_cblink(Terminal
*term
)
1102 if (term
->cfg
.blink_cur
&& term
->has_focus
) {
1103 if (!term
->cblink_pending
)
1104 term
->next_cblink
= schedule_timer(CBLINK_DELAY
, term_timer
, term
);
1105 term
->cblink_pending
= TRUE
;
1107 term
->cblinker
= 1; /* reset when not in use */
1108 term
->cblink_pending
= FALSE
;
1113 * Call to reset cursor blinking on new output.
1115 static void term_reset_cblink(Terminal
*term
)
1117 seen_disp_event(term
);
1119 term
->cblink_pending
= FALSE
;
1120 term_schedule_cblink(term
);
1124 * Call to begin a visual bell.
1126 static void term_schedule_vbell(Terminal
*term
, int already_started
,
1129 long ticks_already_gone
;
1131 if (already_started
)
1132 ticks_already_gone
= GETTICKCOUNT() - startpoint
;
1134 ticks_already_gone
= 0;
1136 if (ticks_already_gone
< VBELL_DELAY
) {
1137 term
->in_vbell
= TRUE
;
1138 term
->vbell_end
= schedule_timer(VBELL_DELAY
- ticks_already_gone
,
1141 term
->in_vbell
= FALSE
;
1146 * Set up power-on settings for the terminal.
1148 static void power_on(Terminal
*term
)
1150 term
->curs
.x
= term
->curs
.y
= 0;
1151 term
->alt_x
= term
->alt_y
= 0;
1152 term
->savecurs
.x
= term
->savecurs
.y
= 0;
1153 term
->alt_t
= term
->marg_t
= 0;
1154 if (term
->rows
!= -1)
1155 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1157 term
->alt_b
= term
->marg_b
= 0;
1158 if (term
->cols
!= -1) {
1160 for (i
= 0; i
< term
->cols
; i
++)
1161 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1163 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1164 term
->alt_ins
= term
->insert
= FALSE
;
1165 term
->alt_wnext
= term
->wrapnext
= term
->save_wnext
= FALSE
;
1166 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1167 term
->alt_cset
= term
->cset
= term
->save_cset
= 0;
1168 term
->alt_utf
= term
->utf
= term
->save_utf
= 0;
1169 term
->utf_state
= 0;
1170 term
->alt_sco_acs
= term
->sco_acs
= term
->save_sco_acs
= 0;
1171 term
->cset_attr
[0] = term
->cset_attr
[1] = term
->save_csattr
= CSET_ASCII
;
1173 term
->in_vbell
= FALSE
;
1174 term
->cursor_on
= 1;
1175 term
->big_cursor
= 0;
1176 term
->default_attr
= term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
1177 term
->term_editing
= term
->term_echoing
= FALSE
;
1178 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
1179 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
1180 term
->use_bce
= term
->cfg
.bce
;
1181 term
->blink_is_real
= term
->cfg
.blinktext
;
1182 term
->erase_char
= term
->basic_erase_char
;
1183 term
->alt_which
= 0;
1184 term_print_finish(term
);
1187 for (i
= 0; i
< 256; i
++)
1188 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1191 swap_screen(term
, 1, FALSE
, FALSE
);
1192 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1193 swap_screen(term
, 0, FALSE
, FALSE
);
1194 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1196 term_schedule_tblink(term
);
1197 term_schedule_cblink(term
);
1201 * Force a screen update.
1203 void term_update(Terminal
*term
)
1207 term
->window_update_pending
= FALSE
;
1209 ctx
= get_ctx(term
->frontend
);
1211 int need_sbar_update
= term
->seen_disp_event
;
1212 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
1213 term
->disptop
= 0; /* return to main screen */
1214 term
->seen_disp_event
= 0;
1215 need_sbar_update
= TRUE
;
1218 if (need_sbar_update
)
1220 do_paint(term
, ctx
, TRUE
);
1221 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
1227 * Called from front end when a keypress occurs, to trigger
1228 * anything magical that needs to happen in that situation.
1230 void term_seen_key_event(Terminal
*term
)
1233 * On any keypress, clear the bell overload mechanism
1234 * completely, on the grounds that large numbers of
1235 * beeps coming from deliberate key action are likely
1236 * to be intended (e.g. beeps from filename completion
1237 * blocking repeatedly).
1239 term
->beep_overloaded
= FALSE
;
1240 while (term
->beephead
) {
1241 struct beeptime
*tmp
= term
->beephead
;
1242 term
->beephead
= tmp
->next
;
1245 term
->beeptail
= NULL
;
1249 * Reset the scrollback on keypress, if we're doing that.
1251 if (term
->cfg
.scroll_on_key
) {
1252 term
->disptop
= 0; /* return to main screen */
1253 seen_disp_event(term
);
1258 * Same as power_on(), but an external function.
1260 void term_pwron(Terminal
*term
)
1263 if (term
->ldisc
) /* cause ldisc to notice changes */
1264 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1270 static void set_erase_char(Terminal
*term
)
1272 term
->erase_char
= term
->basic_erase_char
;
1274 term
->erase_char
.attr
= (term
->curr_attr
&
1275 (ATTR_FGMASK
| ATTR_BGMASK
));
1279 * When the user reconfigures us, we need to check the forbidden-
1280 * alternate-screen config option, disable raw mouse mode if the
1281 * user has disabled mouse reporting, and abandon a print job if
1282 * the user has disabled printing.
1284 void term_reconfig(Terminal
*term
, Config
*cfg
)
1287 * Before adopting the new config, check all those terminal
1288 * settings which control power-on defaults; and if they've
1289 * changed, we will modify the current state as well as the
1290 * default one. The full list is: Auto wrap mode, DEC Origin
1291 * Mode, BCE, blinking text, character classes.
1293 int reset_wrap
, reset_decom
, reset_bce
, reset_tblink
, reset_charclass
;
1296 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
1297 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
1298 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
1299 reset_tblink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
1300 reset_charclass
= 0;
1301 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
1302 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
1303 reset_charclass
= 1;
1306 * If the bidi or shaping settings have changed, flush the bidi
1309 if (term
->cfg
.arabicshaping
!= cfg
->arabicshaping
||
1310 term
->cfg
.bidi
!= cfg
->bidi
) {
1311 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1312 sfree(term
->pre_bidi_cache
[i
].chars
);
1313 sfree(term
->post_bidi_cache
[i
].chars
);
1314 term
->pre_bidi_cache
[i
].width
= -1;
1315 term
->pre_bidi_cache
[i
].chars
= NULL
;
1316 term
->post_bidi_cache
[i
].width
= -1;
1317 term
->post_bidi_cache
[i
].chars
= NULL
;
1321 term
->cfg
= *cfg
; /* STRUCTURE COPY */
1324 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1326 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1328 term
->use_bce
= term
->cfg
.bce
;
1329 set_erase_char(term
);
1332 term
->blink_is_real
= term
->cfg
.blinktext
;
1334 if (reset_charclass
)
1335 for (i
= 0; i
< 256; i
++)
1336 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1338 if (term
->cfg
.no_alt_screen
)
1339 swap_screen(term
, 0, FALSE
, FALSE
);
1340 if (term
->cfg
.no_mouse_rep
) {
1341 term
->xterm_mouse
= 0;
1342 set_raw_mouse_mode(term
->frontend
, 0);
1344 if (term
->cfg
.no_remote_charset
) {
1345 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
1346 term
->sco_acs
= term
->alt_sco_acs
= 0;
1349 if (!*term
->cfg
.printer
) {
1350 term_print_finish(term
);
1352 term_schedule_tblink(term
);
1353 term_schedule_cblink(term
);
1357 * Clear the scrollback.
1359 void term_clrsb(Terminal
*term
)
1363 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
1364 sfree(line
); /* this is compressed data, not a termline */
1366 term
->tempsblines
= 0;
1367 term
->alt_sblines
= 0;
1372 * Initialise the terminal.
1374 Terminal
*term_init(Config
*mycfg
, struct unicode_data
*ucsdata
,
1380 * Allocate a new Terminal structure and initialise the fields
1383 term
= snew(Terminal
);
1384 term
->frontend
= frontend
;
1385 term
->ucsdata
= ucsdata
;
1386 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
1387 term
->logctx
= NULL
;
1388 term
->compatibility_level
= TM_PUTTY
;
1389 strcpy(term
->id_string
, "\033[?6c");
1390 term
->cblink_pending
= term
->tblink_pending
= FALSE
;
1391 term
->paste_buffer
= NULL
;
1392 term
->paste_len
= 0;
1393 term
->last_paste
= 0;
1394 bufchain_init(&term
->inbuf
);
1395 bufchain_init(&term
->printer_buf
);
1396 term
->printing
= term
->only_printing
= FALSE
;
1397 term
->print_job
= NULL
;
1398 term
->vt52_mode
= FALSE
;
1399 term
->cr_lf_return
= FALSE
;
1400 term
->seen_disp_event
= FALSE
;
1401 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
1402 term
->reset_132
= FALSE
;
1403 term
->cblinker
= term
->tblinker
= 0;
1404 term
->has_focus
= 1;
1405 term
->repeat_off
= FALSE
;
1406 term
->termstate
= TOPLEVEL
;
1407 term
->selstate
= NO_SELECTION
;
1410 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
1411 term
->tempsblines
= 0;
1412 term
->alt_sblines
= 0;
1414 term
->disptext
= NULL
;
1415 term
->dispcursx
= term
->dispcursy
= -1;
1418 term
->rows
= term
->cols
= -1;
1420 term
->beephead
= term
->beeptail
= NULL
;
1421 #ifdef OPTIMISE_SCROLL
1422 term
->scrollhead
= term
->scrolltail
= NULL
;
1423 #endif /* OPTIMISE_SCROLL */
1425 term
->lastbeep
= FALSE
;
1426 term
->beep_overloaded
= FALSE
;
1427 term
->attr_mask
= 0xffffffff;
1428 term
->resize_fn
= NULL
;
1429 term
->resize_ctx
= NULL
;
1430 term
->in_term_out
= FALSE
;
1432 term
->ltemp_size
= 0;
1433 term
->wcFrom
= NULL
;
1435 term
->wcFromTo_size
= 0;
1437 term
->window_update_pending
= FALSE
;
1439 term
->bidi_cache_size
= 0;
1440 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
1443 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
1444 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
1445 term
->basic_erase_char
.cc_next
= 0;
1446 term
->erase_char
= term
->basic_erase_char
;
1451 void term_free(Terminal
*term
)
1454 struct beeptime
*beep
;
1457 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
1458 sfree(line
); /* compressed data, not a termline */
1459 freetree234(term
->scrollback
);
1460 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
1462 freetree234(term
->screen
);
1463 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
1465 freetree234(term
->alt_screen
);
1466 if (term
->disptext
) {
1467 for (i
= 0; i
< term
->rows
; i
++)
1468 freeline(term
->disptext
[i
]);
1470 sfree(term
->disptext
);
1471 while (term
->beephead
) {
1472 beep
= term
->beephead
;
1473 term
->beephead
= beep
->next
;
1476 bufchain_clear(&term
->inbuf
);
1478 printer_finish_job(term
->print_job
);
1479 bufchain_clear(&term
->printer_buf
);
1480 sfree(term
->paste_buffer
);
1482 sfree(term
->wcFrom
);
1485 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1486 sfree(term
->pre_bidi_cache
[i
].chars
);
1487 sfree(term
->post_bidi_cache
[i
].chars
);
1489 sfree(term
->pre_bidi_cache
);
1490 sfree(term
->post_bidi_cache
);
1492 expire_timer_context(term
);
1498 * Set up the terminal for a given size.
1500 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1503 termline
**newdisp
, *line
;
1504 int i
, j
, oldrows
= term
->rows
;
1506 int save_alt_which
= term
->alt_which
;
1508 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1509 newsavelines
== term
->savelines
)
1510 return; /* nothing to do */
1513 swap_screen(term
, 0, FALSE
, FALSE
);
1515 term
->alt_t
= term
->marg_t
= 0;
1516 term
->alt_b
= term
->marg_b
= newrows
- 1;
1518 if (term
->rows
== -1) {
1519 term
->scrollback
= newtree234(NULL
);
1520 term
->screen
= newtree234(NULL
);
1521 term
->tempsblines
= 0;
1526 * Resize the screen and scrollback. We only need to shift
1527 * lines around within our data structures, because lineptr()
1528 * will take care of resizing each individual line if
1531 * - If the new screen is longer, we shunt lines in from temporary
1532 * scrollback if possible, otherwise we add new blank lines at
1535 * - If the new screen is shorter, we remove any blank lines at
1536 * the bottom if possible, otherwise shunt lines above the cursor
1537 * to scrollback if possible, otherwise delete lines below the
1540 * - Then, if the new scrollback length is less than the
1541 * amount of scrollback we actually have, we must throw some
1544 sblen
= count234(term
->scrollback
);
1545 /* Do this loop to expand the screen if newrows > rows */
1546 assert(term
->rows
== count234(term
->screen
));
1547 while (term
->rows
< newrows
) {
1548 if (term
->tempsblines
> 0) {
1549 unsigned char *cline
;
1550 /* Insert a line from the scrollback at the top of the screen. */
1551 assert(sblen
>= term
->tempsblines
);
1552 cline
= delpos234(term
->scrollback
, --sblen
);
1553 line
= decompressline(cline
, NULL
);
1555 line
->temporary
= FALSE
; /* reconstituted line is now real */
1556 term
->tempsblines
-= 1;
1557 addpos234(term
->screen
, line
, 0);
1559 term
->savecurs
.y
+= 1;
1561 /* Add a new blank line at the bottom of the screen. */
1562 line
= newline(term
, newcols
, FALSE
);
1563 addpos234(term
->screen
, line
, count234(term
->screen
));
1567 /* Do this loop to shrink the screen if newrows < rows */
1568 while (term
->rows
> newrows
) {
1569 if (term
->curs
.y
< term
->rows
- 1) {
1570 /* delete bottom row, unless it contains the cursor */
1571 sfree(delpos234(term
->screen
, term
->rows
- 1));
1573 /* push top row to scrollback */
1574 line
= delpos234(term
->screen
, 0);
1575 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1577 term
->tempsblines
+= 1;
1579 term
->savecurs
.y
-= 1;
1583 assert(term
->rows
== newrows
);
1584 assert(count234(term
->screen
) == newrows
);
1586 /* Delete any excess lines from the scrollback. */
1587 while (sblen
> newsavelines
) {
1588 line
= delpos234(term
->scrollback
, 0);
1592 if (sblen
< term
->tempsblines
)
1593 term
->tempsblines
= sblen
;
1594 assert(count234(term
->scrollback
) <= newsavelines
);
1595 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1598 /* Make a new displayed text buffer. */
1599 newdisp
= snewn(newrows
, termline
*);
1600 for (i
= 0; i
< newrows
; i
++) {
1601 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1602 for (j
= 0; j
< newcols
; j
++)
1603 newdisp
[i
]->chars
[j
].attr
= ATTR_INVALID
;
1605 if (term
->disptext
) {
1606 for (i
= 0; i
< oldrows
; i
++)
1607 freeline(term
->disptext
[i
]);
1609 sfree(term
->disptext
);
1610 term
->disptext
= newdisp
;
1611 term
->dispcursx
= term
->dispcursy
= -1;
1613 /* Make a new alternate screen. */
1614 newalt
= newtree234(NULL
);
1615 for (i
= 0; i
< newrows
; i
++) {
1616 line
= newline(term
, newcols
, TRUE
);
1617 addpos234(newalt
, line
, i
);
1619 if (term
->alt_screen
) {
1620 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1622 freetree234(term
->alt_screen
);
1624 term
->alt_screen
= newalt
;
1625 term
->alt_sblines
= 0;
1627 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1630 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1631 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1634 /* Check that the cursor positions are still valid. */
1635 if (term
->savecurs
.y
< 0)
1636 term
->savecurs
.y
= 0;
1637 if (term
->savecurs
.y
>= newrows
)
1638 term
->savecurs
.y
= newrows
- 1;
1639 if (term
->curs
.y
< 0)
1641 if (term
->curs
.y
>= newrows
)
1642 term
->curs
.y
= newrows
- 1;
1643 if (term
->curs
.x
>= newcols
)
1644 term
->curs
.x
= newcols
- 1;
1645 term
->alt_x
= term
->alt_y
= 0;
1646 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1648 term
->rows
= newrows
;
1649 term
->cols
= newcols
;
1650 term
->savelines
= newsavelines
;
1652 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1656 if (term
->resize_fn
)
1657 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1661 * Hand a function and context pointer to the terminal which it can
1662 * use to notify a back end of resizes.
1664 void term_provide_resize_fn(Terminal
*term
,
1665 void (*resize_fn
)(void *, int, int),
1668 term
->resize_fn
= resize_fn
;
1669 term
->resize_ctx
= resize_ctx
;
1670 if (term
->cols
> 0 && term
->rows
> 0)
1671 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1674 /* Find the bottom line on the screen that has any content.
1675 * If only the top line has content, returns 0.
1676 * If no lines have content, return -1.
1678 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1681 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1682 termline
*line
= index234(screen
, i
);
1684 for (j
= 0; j
< line
->cols
; j
++)
1685 if (!termchars_equal(&line
->chars
[j
], &term
->erase_char
))
1687 if (j
!= line
->cols
) break;
1693 * Swap screens. If `reset' is TRUE and we have been asked to
1694 * switch to the alternate screen, we must bring most of its
1695 * configuration from the main screen and erase the contents of the
1696 * alternate screen completely. (This is even true if we're already
1697 * on it! Blame xterm.)
1699 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1705 reset
= FALSE
; /* do no weird resetting if which==0 */
1707 if (which
!= term
->alt_which
) {
1708 term
->alt_which
= which
;
1710 ttr
= term
->alt_screen
;
1711 term
->alt_screen
= term
->screen
;
1713 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1715 if (!reset
&& !keep_cur_pos
)
1716 term
->curs
.x
= term
->alt_x
;
1719 if (!reset
&& !keep_cur_pos
)
1720 term
->curs
.y
= term
->alt_y
;
1723 if (!reset
) term
->marg_t
= term
->alt_t
;
1726 if (!reset
) term
->marg_b
= term
->alt_b
;
1729 if (!reset
) term
->dec_om
= term
->alt_om
;
1732 if (!reset
) term
->wrap
= term
->alt_wrap
;
1735 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1736 term
->alt_wnext
= t
;
1738 if (!reset
) term
->insert
= term
->alt_ins
;
1741 if (!reset
) term
->cset
= term
->alt_cset
;
1744 if (!reset
) term
->utf
= term
->alt_utf
;
1747 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1748 term
->alt_sco_acs
= t
;
1751 if (reset
&& term
->screen
) {
1753 * Yes, this _is_ supposed to honour background-colour-erase.
1755 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1760 * Update the scroll bar.
1762 static void update_sbar(Terminal
*term
)
1764 int nscroll
= sblines(term
);
1765 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1766 nscroll
+ term
->disptop
, term
->rows
);
1770 * Check whether the region bounded by the two pointers intersects
1771 * the scroll region, and de-select the on-screen selection if so.
1773 static void check_selection(Terminal
*term
, pos from
, pos to
)
1775 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1780 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1781 * for backward.) `sb' is TRUE if the scrolling is permitted to
1782 * affect the scrollback buffer.
1784 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1787 int i
, seltop
, olddisptop
, shift
;
1789 if (topline
!= 0 || term
->alt_which
!= 0)
1792 olddisptop
= term
->disptop
;
1796 line
= delpos234(term
->screen
, botline
);
1797 resizeline(term
, line
, term
->cols
);
1798 for (i
= 0; i
< term
->cols
; i
++)
1799 copy_termchar(line
, i
, &term
->erase_char
);
1800 line
->lattr
= LATTR_NORM
;
1801 addpos234(term
->screen
, line
, topline
);
1803 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
1805 if (term
->selstart
.y
> botline
) {
1806 term
->selstart
.y
= botline
+ 1;
1807 term
->selstart
.x
= 0;
1810 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
1812 if (term
->selend
.y
> botline
) {
1813 term
->selend
.y
= botline
+ 1;
1822 line
= delpos234(term
->screen
, topline
);
1823 cc_check(line
); /* XXX-REMOVE-BEFORE-RELEASE */
1824 if (sb
&& term
->savelines
> 0) {
1825 int sblen
= count234(term
->scrollback
);
1827 * We must add this line to the scrollback. We'll
1828 * remove a line from the top of the scrollback if
1829 * the scrollback is full.
1831 if (sblen
== term
->savelines
) {
1832 unsigned char *cline
;
1835 cline
= delpos234(term
->scrollback
, 0);
1838 term
->tempsblines
+= 1;
1840 addpos234(term
->scrollback
, compressline(line
), sblen
);
1842 /* now `line' itself can be reused as the bottom line */
1845 * If the user is currently looking at part of the
1846 * scrollback, and they haven't enabled any options
1847 * that are going to reset the scrollback as a
1848 * result of this movement, then the chances are
1849 * they'd like to keep looking at the same line. So
1850 * we move their viewpoint at the same rate as the
1851 * scroll, at least until their viewpoint hits the
1852 * top end of the scrollback buffer, at which point
1853 * we don't have the choice any more.
1855 * Thanks to Jan Holmen Holsten for the idea and
1856 * initial implementation.
1858 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
1861 resizeline(term
, line
, term
->cols
);
1862 for (i
= 0; i
< term
->cols
; i
++)
1863 copy_termchar(line
, i
, &term
->erase_char
);
1864 line
->lattr
= LATTR_NORM
;
1865 addpos234(term
->screen
, line
, botline
);
1868 * If the selection endpoints move into the scrollback,
1869 * we keep them moving until they hit the top. However,
1870 * of course, if the line _hasn't_ moved into the
1871 * scrollback then we don't do this, and cut them off
1872 * at the top of the scroll region.
1874 * This applies to selstart and selend (for an existing
1875 * selection), and also selanchor (for one being
1876 * selected as we speak).
1878 seltop
= sb ?
-term
->savelines
: topline
;
1880 if (term
->selstate
!= NO_SELECTION
) {
1881 if (term
->selstart
.y
>= seltop
&&
1882 term
->selstart
.y
<= botline
) {
1884 if (term
->selstart
.y
< seltop
) {
1885 term
->selstart
.y
= seltop
;
1886 term
->selstart
.x
= 0;
1889 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
1891 if (term
->selend
.y
< seltop
) {
1892 term
->selend
.y
= seltop
;
1896 if (term
->selanchor
.y
>= seltop
&&
1897 term
->selanchor
.y
<= botline
) {
1898 term
->selanchor
.y
--;
1899 if (term
->selanchor
.y
< seltop
) {
1900 term
->selanchor
.y
= seltop
;
1901 term
->selanchor
.x
= 0;
1909 #ifdef OPTIMISE_SCROLL
1910 shift
+= term
->disptop
- olddisptop
;
1911 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
1912 scroll_display(term
, topline
, botline
, shift
);
1913 #endif /* OPTIMISE_SCROLL */
1916 #ifdef OPTIMISE_SCROLL
1918 * Add a scroll of a region on the screen into the pending scroll list.
1919 * `lines' is +ve for scrolling forward, -ve for backward.
1921 * If the scroll is on the same area as the last scroll in the list,
1924 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
1926 struct scrollregion
*newscroll
;
1927 if (term
->scrolltail
&&
1928 term
->scrolltail
->topline
== topline
&&
1929 term
->scrolltail
->botline
== botline
) {
1930 term
->scrolltail
->lines
+= lines
;
1932 newscroll
= snew(struct scrollregion
);
1933 newscroll
->topline
= topline
;
1934 newscroll
->botline
= botline
;
1935 newscroll
->lines
= lines
;
1936 newscroll
->next
= NULL
;
1938 if (!term
->scrollhead
)
1939 term
->scrollhead
= newscroll
;
1941 term
->scrolltail
->next
= newscroll
;
1942 term
->scrolltail
= newscroll
;
1947 * Scroll the physical display, and our conception of it in disptext.
1949 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
1951 int distance
, nlines
, i
, j
;
1953 distance
= lines
> 0 ? lines
: -lines
;
1954 nlines
= botline
- topline
+ 1 - distance
;
1956 for (i
= 0; i
< nlines
; i
++)
1957 for (j
= 0; j
< term
->cols
; j
++)
1958 copy_termchar(term
->disptext
[start
+i
], j
,
1959 term
->disptext
[start
+i
+distance
]->chars
+j
);
1960 if (term
->dispcursy
>= 0 &&
1961 term
->dispcursy
>= topline
+ distance
&&
1962 term
->dispcursy
< topline
+ distance
+ nlines
)
1963 term
->dispcursy
-= distance
;
1964 for (i
= 0; i
< distance
; i
++)
1965 for (j
= 0; j
< term
->cols
; j
++)
1966 term
->disptext
[start
+nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
1968 for (i
= nlines
; i
-- ;)
1969 for (j
= 0; j
< term
->cols
; j
++)
1970 copy_termchar(term
->disptext
[start
+i
+distance
], j
,
1971 term
->disptext
[start
+i
]->chars
+j
);
1972 if (term
->dispcursy
>= 0 &&
1973 term
->dispcursy
>= topline
&&
1974 term
->dispcursy
< topline
+ nlines
)
1975 term
->dispcursy
+= distance
;
1976 for (i
= 0; i
< distance
; i
++)
1977 for (j
= 0; j
< term
->cols
; j
++)
1978 term
->disptext
[start
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
1980 save_scroll(term
, topline
, botline
, lines
);
1982 #endif /* OPTIMISE_SCROLL */
1985 * Move the cursor to a given position, clipping at boundaries. We
1986 * may or may not want to clip at the scroll margin: marg_clip is 0
1987 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
1988 * even _being_ outside the margins.
1990 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
1994 if (x
>= term
->cols
)
1997 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
2000 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
2006 if (y
>= term
->rows
)
2010 term
->wrapnext
= FALSE
;
2014 * Save or restore the cursor and SGR mode.
2016 static void save_cursor(Terminal
*term
, int save
)
2019 term
->savecurs
= term
->curs
;
2020 term
->save_attr
= term
->curr_attr
;
2021 term
->save_cset
= term
->cset
;
2022 term
->save_utf
= term
->utf
;
2023 term
->save_wnext
= term
->wrapnext
;
2024 term
->save_csattr
= term
->cset_attr
[term
->cset
];
2025 term
->save_sco_acs
= term
->sco_acs
;
2027 term
->curs
= term
->savecurs
;
2028 /* Make sure the window hasn't shrunk since the save */
2029 if (term
->curs
.x
>= term
->cols
)
2030 term
->curs
.x
= term
->cols
- 1;
2031 if (term
->curs
.y
>= term
->rows
)
2032 term
->curs
.y
= term
->rows
- 1;
2034 term
->curr_attr
= term
->save_attr
;
2035 term
->cset
= term
->save_cset
;
2036 term
->utf
= term
->save_utf
;
2037 term
->wrapnext
= term
->save_wnext
;
2039 * wrapnext might reset to False if the x position is no
2040 * longer at the rightmost edge.
2042 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
2043 term
->wrapnext
= FALSE
;
2044 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
2045 term
->sco_acs
= term
->save_sco_acs
;
2046 set_erase_char(term
);
2051 * This function is called before doing _anything_ which affects
2052 * only part of a line of text. It is used to mark the boundary
2053 * between two character positions, and it indicates that some sort
2054 * of effect is going to happen on only one side of that boundary.
2056 * The effect of this function is to check whether a CJK
2057 * double-width character is straddling the boundary, and to remove
2058 * it and replace it with two spaces if so. (Of course, one or
2059 * other of those spaces is then likely to be replaced with
2060 * something else again, as a result of whatever happens next.)
2062 * Also, if the boundary is at the right-hand _edge_ of the screen,
2063 * it implies something deliberate is being done to the rightmost
2064 * column position; hence we must clear LATTR_WRAPPED2.
2066 * The input to the function is the coordinates of the _second_
2067 * character of the pair.
2069 static void check_boundary(Terminal
*term
, int x
, int y
)
2073 /* Validate input coordinates, just in case. */
2074 if (x
== 0 || x
> term
->cols
)
2077 ldata
= scrlineptr(y
);
2078 if (x
== term
->cols
) {
2079 ldata
->lattr
&= ~LATTR_WRAPPED2
;
2081 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
2082 clear_cc(ldata
, x
-1);
2084 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
2085 ldata
->chars
[x
] = ldata
->chars
[x
-1];
2091 * Erase a large portion of the screen: the whole screen, or the
2092 * whole line, or parts thereof.
2094 static void erase_lots(Terminal
*term
,
2095 int line_only
, int from_begin
, int to_end
)
2099 int erasing_lines_from_top
= 0;
2102 start
.y
= term
->curs
.y
;
2104 end
.y
= term
->curs
.y
+ 1;
2106 erase_lattr
= FALSE
;
2121 if (!from_begin
|| !to_end
)
2122 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2123 check_selection(term
, start
, end
);
2125 /* Clear screen also forces a full window redraw, just in case. */
2126 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
2127 term_invalidate(term
);
2129 /* Lines scrolled away shouldn't be brought back on if the terminal
2131 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
2132 erasing_lines_from_top
= 1;
2134 if (term
->cfg
.erase_to_scrollback
&& erasing_lines_from_top
) {
2135 /* If it's a whole number of lines, starting at the top, and
2136 * we're fully erasing them, erase by scrolling and keep the
2137 * lines in the scrollback. */
2138 int scrolllines
= end
.y
;
2139 if (end
.y
== term
->rows
) {
2140 /* Shrink until we find a non-empty row.*/
2141 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
2143 if (scrolllines
> 0)
2144 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
2146 termline
*ldata
= scrlineptr(start
.y
);
2147 while (poslt(start
, end
)) {
2148 if (start
.x
== term
->cols
) {
2150 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
2152 ldata
->lattr
= LATTR_NORM
;
2154 copy_termchar(ldata
, start
.x
, &term
->erase_char
);
2156 if (incpos(start
) && start
.y
< term
->rows
) {
2157 ldata
= scrlineptr(start
.y
);
2162 /* After an erase of lines from the top of the screen, we shouldn't
2163 * bring the lines back again if the terminal enlarges (since the user or
2164 * application has explictly thrown them away). */
2165 if (erasing_lines_from_top
&& !(term
->alt_which
))
2166 term
->tempsblines
= 0;
2170 * Insert or delete characters within the current line. n is +ve if
2171 * insertion is desired, and -ve for deletion.
2173 static void insch(Terminal
*term
, int n
)
2175 int dir
= (n
< 0 ?
-1 : +1);
2180 n
= (n
< 0 ?
-n
: n
);
2181 if (n
> term
->cols
- term
->curs
.x
)
2182 n
= term
->cols
- term
->curs
.x
;
2183 m
= term
->cols
- term
->curs
.x
- n
;
2184 cursplus
.y
= term
->curs
.y
;
2185 cursplus
.x
= term
->curs
.x
+ n
;
2186 check_selection(term
, term
->curs
, cursplus
);
2187 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2189 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
2190 ldata
= scrlineptr(term
->curs
.y
);
2192 for (j
= 0; j
< m
; j
++)
2193 move_termchar(ldata
,
2194 ldata
->chars
+ term
->curs
.x
+ j
,
2195 ldata
->chars
+ term
->curs
.x
+ j
+ n
);
2197 copy_termchar(ldata
, term
->curs
.x
+ m
++, &term
->erase_char
);
2200 move_termchar(ldata
,
2201 ldata
->chars
+ term
->curs
.x
+ j
+ n
,
2202 ldata
->chars
+ term
->curs
.x
+ j
);
2204 copy_termchar(ldata
, term
->curs
.x
+ n
, &term
->erase_char
);
2209 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2210 * whether the mode is a DEC private one or a normal one.)
2212 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
2216 case 1: /* DECCKM: application cursor keys */
2217 term
->app_cursor_keys
= state
;
2219 case 2: /* DECANM: VT52 mode */
2220 term
->vt52_mode
= !state
;
2221 if (term
->vt52_mode
) {
2222 term
->blink_is_real
= FALSE
;
2223 term
->vt52_bold
= FALSE
;
2225 term
->blink_is_real
= term
->cfg
.blinktext
;
2227 term_schedule_tblink(term
);
2229 case 3: /* DECCOLM: 80/132 columns */
2231 if (!term
->cfg
.no_remote_resize
)
2232 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
2233 term
->reset_132
= state
;
2234 term
->alt_t
= term
->marg_t
= 0;
2235 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
2236 move(term
, 0, 0, 0);
2237 erase_lots(term
, FALSE
, TRUE
, TRUE
);
2239 case 5: /* DECSCNM: reverse video */
2241 * Toggle reverse video. If we receive an OFF within the
2242 * visual bell timeout period after an ON, we trigger an
2243 * effective visual bell, so that ESC[?5hESC[?5l will
2244 * always be an actually _visible_ visual bell.
2246 if (term
->rvideo
&& !state
) {
2247 /* This is an OFF, so set up a vbell */
2248 term_schedule_vbell(term
, TRUE
, term
->rvbell_startpoint
);
2249 } else if (!term
->rvideo
&& state
) {
2250 /* This is an ON, so we notice the time and save it. */
2251 term
->rvbell_startpoint
= GETTICKCOUNT();
2253 term
->rvideo
= state
;
2254 seen_disp_event(term
);
2256 case 6: /* DECOM: DEC origin mode */
2257 term
->dec_om
= state
;
2259 case 7: /* DECAWM: auto wrap */
2262 case 8: /* DECARM: auto key repeat */
2263 term
->repeat_off
= !state
;
2265 case 10: /* DECEDM: set local edit mode */
2266 term
->term_editing
= state
;
2267 if (term
->ldisc
) /* cause ldisc to notice changes */
2268 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2270 case 25: /* DECTCEM: enable/disable cursor */
2271 compatibility2(OTHER
, VT220
);
2272 term
->cursor_on
= state
;
2273 seen_disp_event(term
);
2275 case 47: /* alternate screen */
2276 compatibility(OTHER
);
2278 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
2281 case 1000: /* xterm mouse 1 */
2282 term
->xterm_mouse
= state ?
1 : 0;
2283 set_raw_mouse_mode(term
->frontend
, state
);
2285 case 1002: /* xterm mouse 2 */
2286 term
->xterm_mouse
= state ?
2 : 0;
2287 set_raw_mouse_mode(term
->frontend
, state
);
2289 case 1047: /* alternate screen */
2290 compatibility(OTHER
);
2292 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
2295 case 1048: /* save/restore cursor */
2296 if (!term
->cfg
.no_alt_screen
)
2297 save_cursor(term
, state
);
2298 if (!state
) seen_disp_event(term
);
2300 case 1049: /* cursor & alternate screen */
2301 if (state
&& !term
->cfg
.no_alt_screen
)
2302 save_cursor(term
, state
);
2303 if (!state
) seen_disp_event(term
);
2304 compatibility(OTHER
);
2306 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
2307 if (!state
&& !term
->cfg
.no_alt_screen
)
2308 save_cursor(term
, state
);
2313 case 4: /* IRM: set insert mode */
2314 compatibility(VT102
);
2315 term
->insert
= state
;
2317 case 12: /* SRM: set echo mode */
2318 term
->term_echoing
= !state
;
2319 if (term
->ldisc
) /* cause ldisc to notice changes */
2320 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2322 case 20: /* LNM: Return sends ... */
2323 term
->cr_lf_return
= state
;
2325 case 34: /* WYULCURM: Make cursor BIG */
2326 compatibility2(OTHER
, VT220
);
2327 term
->big_cursor
= !state
;
2332 * Process an OSC sequence: set window title or icon name.
2334 static void do_osc(Terminal
*term
)
2337 while (term
->osc_strlen
--)
2338 term
->wordness
[(unsigned char)
2339 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
2341 term
->osc_string
[term
->osc_strlen
] = '\0';
2342 switch (term
->esc_args
[0]) {
2345 if (!term
->cfg
.no_remote_wintitle
)
2346 set_icon(term
->frontend
, term
->osc_string
);
2347 if (term
->esc_args
[0] == 1)
2349 /* fall through: parameter 0 means set both */
2352 if (!term
->cfg
.no_remote_wintitle
)
2353 set_title(term
->frontend
, term
->osc_string
);
2360 * ANSI printing routines.
2362 static void term_print_setup(Terminal
*term
)
2364 bufchain_clear(&term
->printer_buf
);
2365 term
->print_job
= printer_start_job(term
->cfg
.printer
);
2367 static void term_print_flush(Terminal
*term
)
2372 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
2373 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2376 printer_job_data(term
->print_job
, data
, len
);
2377 bufchain_consume(&term
->printer_buf
, len
);
2380 static void term_print_finish(Terminal
*term
)
2386 if (!term
->printing
&& !term
->only_printing
)
2387 return; /* we need do nothing */
2389 term_print_flush(term
);
2390 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
2391 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2393 if (c
== '\033' || c
== '\233') {
2394 bufchain_consume(&term
->printer_buf
, size
);
2397 printer_job_data(term
->print_job
, &c
, 1);
2398 bufchain_consume(&term
->printer_buf
, 1);
2401 printer_finish_job(term
->print_job
);
2402 term
->print_job
= NULL
;
2403 term
->printing
= term
->only_printing
= FALSE
;
2407 * Remove everything currently in `inbuf' and stick it up on the
2408 * in-memory display. There's a big state machine in here to
2409 * process escape sequences...
2411 static void term_out(Terminal
*term
)
2415 unsigned char localbuf
[256], *chars
;
2420 chars
= NULL
; /* placate compiler warnings */
2421 while (nchars
> 0 || bufchain_size(&term
->inbuf
) > 0) {
2425 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
2426 if (nchars
> sizeof(localbuf
))
2427 nchars
= sizeof(localbuf
);
2428 memcpy(localbuf
, ret
, nchars
);
2429 bufchain_consume(&term
->inbuf
, nchars
);
2431 assert(chars
!= NULL
);
2437 * Optionally log the session traffic to a file. Useful for
2438 * debugging and possibly also useful for actual logging.
2440 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
2441 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
2447 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2448 * be able to display 8-bit characters, but I'll let that go 'cause
2453 * If we're printing, add the character to the printer
2456 if (term
->printing
) {
2457 bufchain_add(&term
->printer_buf
, &c
, 1);
2460 * If we're in print-only mode, we use a much simpler
2461 * state machine designed only to recognise the ESC[4i
2462 * termination sequence.
2464 if (term
->only_printing
) {
2466 term
->print_state
= 1;
2467 else if (c
== (unsigned char)'\233')
2468 term
->print_state
= 2;
2469 else if (c
== '[' && term
->print_state
== 1)
2470 term
->print_state
= 2;
2471 else if (c
== '4' && term
->print_state
== 2)
2472 term
->print_state
= 3;
2473 else if (c
== 'i' && term
->print_state
== 3)
2474 term
->print_state
= 4;
2476 term
->print_state
= 0;
2477 if (term
->print_state
== 4) {
2478 term_print_finish(term
);
2484 /* First see about all those translations. */
2485 if (term
->termstate
== TOPLEVEL
) {
2487 switch (term
->utf_state
) {
2490 /* UTF-8 must be stateless so we ignore iso2022. */
2491 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2492 c
= term
->ucsdata
->unitab_ctrl
[c
];
2493 else c
= ((unsigned char)c
) | CSET_ASCII
;
2495 } else if ((c
& 0xe0) == 0xc0) {
2496 term
->utf_size
= term
->utf_state
= 1;
2497 term
->utf_char
= (c
& 0x1f);
2498 } else if ((c
& 0xf0) == 0xe0) {
2499 term
->utf_size
= term
->utf_state
= 2;
2500 term
->utf_char
= (c
& 0x0f);
2501 } else if ((c
& 0xf8) == 0xf0) {
2502 term
->utf_size
= term
->utf_state
= 3;
2503 term
->utf_char
= (c
& 0x07);
2504 } else if ((c
& 0xfc) == 0xf8) {
2505 term
->utf_size
= term
->utf_state
= 4;
2506 term
->utf_char
= (c
& 0x03);
2507 } else if ((c
& 0xfe) == 0xfc) {
2508 term
->utf_size
= term
->utf_state
= 5;
2509 term
->utf_char
= (c
& 0x01);
2520 if ((c
& 0xC0) != 0x80) {
2523 term
->utf_state
= 0;
2526 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2527 if (--term
->utf_state
)
2532 /* Is somebody trying to be evil! */
2534 (c
< 0x800 && term
->utf_size
>= 2) ||
2535 (c
< 0x10000 && term
->utf_size
>= 3) ||
2536 (c
< 0x200000 && term
->utf_size
>= 4) ||
2537 (c
< 0x4000000 && term
->utf_size
>= 5))
2540 /* Unicode line separator and paragraph separator are CR-LF */
2541 if (c
== 0x2028 || c
== 0x2029)
2544 /* High controls are probably a Baaad idea too. */
2548 /* The UTF-16 surrogates are not nice either. */
2549 /* The standard give the option of decoding these:
2550 * I don't want to! */
2551 if (c
>= 0xD800 && c
< 0xE000)
2554 /* ISO 10646 characters now limited to UTF-16 range. */
2558 /* This is currently a TagPhobic application.. */
2559 if (c
>= 0xE0000 && c
<= 0xE007F)
2562 /* U+FEFF is best seen as a null. */
2565 /* But U+FFFE is an error. */
2566 if (c
== 0xFFFE || c
== 0xFFFF)
2571 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2572 else if(term
->sco_acs
&&
2573 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2575 if (term
->sco_acs
== 2) c
|= 0x80;
2578 switch (term
->cset_attr
[term
->cset
]) {
2580 * Linedraw characters are different from 'ESC ( B'
2581 * only for a small range. For ones outside that
2582 * range, make sure we use the same font as well as
2583 * the same encoding.
2586 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2587 c
= term
->ucsdata
->unitab_ctrl
[c
];
2589 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2593 /* If UK-ASCII, make the '#' a LineDraw Pound */
2595 c
= '}' | CSET_LINEDRW
;
2598 /*FALLTHROUGH*/ case CSET_ASCII
:
2599 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2600 c
= term
->ucsdata
->unitab_ctrl
[c
];
2602 c
= ((unsigned char) c
) | CSET_ASCII
;
2605 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2611 /* How about C1 controls ? */
2612 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2613 !term
->vt52_mode
&& has_compat(VT220
)) {
2614 term
->termstate
= SEEN_ESC
;
2615 term
->esc_query
= FALSE
;
2616 c
= '@' + (c
& 0x1F);
2619 /* Or the GL control. */
2620 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2621 if (term
->curs
.x
&& !term
->wrapnext
)
2623 term
->wrapnext
= FALSE
;
2624 /* destructive backspace might be disabled */
2625 if (!term
->cfg
.no_dbackspace
) {
2626 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2627 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2628 copy_termchar(scrlineptr(term
->curs
.y
),
2629 term
->curs
.x
, &term
->erase_char
);
2632 /* Or normal C0 controls. */
2633 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2635 case '\005': /* ENQ: terminal type query */
2636 /* Strictly speaking this is VT100 but a VT100 defaults to
2637 * no response. Other terminals respond at their option.
2639 * Don't put a CR in the default string as this tends to
2640 * upset some weird software.
2642 * An xterm returns "xterm" (5 characters)
2644 compatibility(ANSIMIN
);
2646 char abuf
[256], *s
, *d
;
2648 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
; s
++) {
2650 if (*s
>= 'a' && *s
<= 'z')
2651 *d
++ = (*s
- ('a' - 1));
2652 else if ((*s
>= '@' && *s
<= '_') ||
2653 *s
== '?' || (*s
& 0x80))
2658 } else if (*s
== '^') {
2663 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2667 case '\007': /* BEL: Bell */
2669 struct beeptime
*newbeep
;
2670 unsigned long ticks
;
2672 ticks
= GETTICKCOUNT();
2674 if (!term
->beep_overloaded
) {
2675 newbeep
= snew(struct beeptime
);
2676 newbeep
->ticks
= ticks
;
2677 newbeep
->next
= NULL
;
2678 if (!term
->beephead
)
2679 term
->beephead
= newbeep
;
2681 term
->beeptail
->next
= newbeep
;
2682 term
->beeptail
= newbeep
;
2687 * Throw out any beeps that happened more than
2690 while (term
->beephead
&&
2691 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
2692 struct beeptime
*tmp
= term
->beephead
;
2693 term
->beephead
= tmp
->next
;
2695 if (!term
->beephead
)
2696 term
->beeptail
= NULL
;
2700 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
2701 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
2703 * If we're currently overloaded and the
2704 * last beep was more than s seconds ago,
2705 * leave overload mode.
2707 term
->beep_overloaded
= FALSE
;
2708 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
2709 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
2711 * Now, if we have n or more beeps
2712 * remaining in the queue, go into overload
2715 term
->beep_overloaded
= TRUE
;
2717 term
->lastbeep
= ticks
;
2720 * Perform an actual beep if we're not overloaded.
2722 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
2723 beep(term
->frontend
, term
->cfg
.beep
);
2725 if (term
->cfg
.beep
== BELL_VISUAL
) {
2726 term_schedule_vbell(term
, FALSE
, 0);
2729 seen_disp_event(term
);
2732 case '\b': /* BS: Back space */
2733 if (term
->curs
.x
== 0 &&
2734 (term
->curs
.y
== 0 || term
->wrap
== 0))
2736 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2737 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2738 else if (term
->wrapnext
)
2739 term
->wrapnext
= FALSE
;
2742 seen_disp_event(term
);
2744 case '\016': /* LS1: Locking-shift one */
2745 compatibility(VT100
);
2748 case '\017': /* LS0: Locking-shift zero */
2749 compatibility(VT100
);
2752 case '\033': /* ESC: Escape */
2753 if (term
->vt52_mode
)
2754 term
->termstate
= VT52_ESC
;
2756 compatibility(ANSIMIN
);
2757 term
->termstate
= SEEN_ESC
;
2758 term
->esc_query
= FALSE
;
2761 case '\015': /* CR: Carriage return */
2763 term
->wrapnext
= FALSE
;
2764 seen_disp_event(term
);
2765 term
->paste_hold
= 0;
2767 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2769 case '\014': /* FF: Form feed */
2770 if (has_compat(SCOANSI
)) {
2771 move(term
, 0, 0, 0);
2772 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2774 term
->wrapnext
= FALSE
;
2775 seen_disp_event(term
);
2778 case '\013': /* VT: Line tabulation */
2779 compatibility(VT100
);
2780 case '\012': /* LF: Line feed */
2781 if (term
->curs
.y
== term
->marg_b
)
2782 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2783 else if (term
->curs
.y
< term
->rows
- 1)
2785 if (term
->cfg
.lfhascr
)
2787 term
->wrapnext
= FALSE
;
2788 seen_disp_event(term
);
2789 term
->paste_hold
= 0;
2791 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2793 case '\t': /* HT: Character tabulation */
2795 pos old_curs
= term
->curs
;
2796 termline
*ldata
= scrlineptr(term
->curs
.y
);
2800 } while (term
->curs
.x
< term
->cols
- 1 &&
2801 !term
->tabs
[term
->curs
.x
]);
2803 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
2804 if (term
->curs
.x
>= term
->cols
/ 2)
2805 term
->curs
.x
= term
->cols
/ 2 - 1;
2807 if (term
->curs
.x
>= term
->cols
)
2808 term
->curs
.x
= term
->cols
- 1;
2811 check_selection(term
, old_curs
, term
->curs
);
2813 seen_disp_event(term
);
2817 switch (term
->termstate
) {
2819 /* Only graphic characters get this far;
2820 * ctrls are stripped above */
2822 termline
*cline
= scrlineptr(term
->curs
.y
);
2827 width
= wcwidth((wchar_t) c
);
2829 if (term
->wrapnext
&& term
->wrap
&& width
> 0) {
2830 cline
->lattr
|= LATTR_WRAPPED
;
2831 if (term
->curs
.y
== term
->marg_b
)
2832 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2833 else if (term
->curs
.y
< term
->rows
- 1)
2836 term
->wrapnext
= FALSE
;
2837 cline
= scrlineptr(term
->curs
.y
);
2839 if (term
->insert
&& width
> 0)
2841 if (term
->selstate
!= NO_SELECTION
) {
2842 pos cursplus
= term
->curs
;
2844 check_selection(term
, term
->curs
, cursplus
);
2846 if (((c
& CSET_MASK
) == CSET_ASCII
||
2847 (c
& CSET_MASK
) == 0) &&
2849 logtraffic(term
->logctx
, (unsigned char) c
,
2855 * If we're about to display a double-width
2856 * character starting in the rightmost
2857 * column, then we do something special
2858 * instead. We must print a space in the
2859 * last column of the screen, then wrap;
2860 * and we also set LATTR_WRAPPED2 which
2861 * instructs subsequent cut-and-pasting not
2862 * only to splice this line to the one
2863 * after it, but to ignore the space in the
2864 * last character position as well.
2865 * (Because what was actually output to the
2866 * terminal was presumably just a sequence
2867 * of CJK characters, and we don't want a
2868 * space to be pasted in the middle of
2869 * those just because they had the
2870 * misfortune to start in the wrong parity
2871 * column. xterm concurs.)
2873 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2874 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2875 if (term
->curs
.x
== term
->cols
-1) {
2876 copy_termchar(cline
, term
->curs
.x
,
2878 cline
->lattr
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
2879 if (term
->curs
.y
== term
->marg_b
)
2880 scroll(term
, term
->marg_t
, term
->marg_b
,
2882 else if (term
->curs
.y
< term
->rows
- 1)
2885 /* Now we must check_boundary again, of course. */
2886 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2887 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2891 clear_cc(cline
, term
->curs
.x
);
2892 cline
->chars
[term
->curs
.x
].chr
= c
;
2893 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2898 clear_cc(cline
, term
->curs
.x
);
2899 cline
->chars
[term
->curs
.x
].chr
= UCSWIDE
;
2900 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2904 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2905 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2908 clear_cc(cline
, term
->curs
.x
);
2909 cline
->chars
[term
->curs
.x
].chr
= c
;
2910 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2914 if (term
->curs
.x
> 0) {
2915 int x
= term
->curs
.x
- 1;
2917 /* If we're in wrapnext state, the character
2918 * to combine with is _here_, not to our left. */
2923 * If the previous character is
2924 * UCSWIDE, back up another one.
2926 if (cline
->chars
[x
].chr
== UCSWIDE
) {
2931 add_cc(cline
, x
, c
);
2932 seen_disp_event(term
);
2939 if (term
->curs
.x
== term
->cols
) {
2941 term
->wrapnext
= TRUE
;
2942 if (term
->wrap
&& term
->vt52_mode
) {
2943 cline
->lattr
|= LATTR_WRAPPED
;
2944 if (term
->curs
.y
== term
->marg_b
)
2945 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2946 else if (term
->curs
.y
< term
->rows
- 1)
2949 term
->wrapnext
= FALSE
;
2952 seen_disp_event(term
);
2958 * This state is virtually identical to SEEN_ESC, with the
2959 * exception that we have an OSC sequence in the pipeline,
2960 * and _if_ we see a backslash, we process it.
2964 term
->termstate
= TOPLEVEL
;
2967 /* else fall through */
2969 if (c
>= ' ' && c
<= '/') {
2970 if (term
->esc_query
)
2971 term
->esc_query
= -1;
2973 term
->esc_query
= c
;
2976 term
->termstate
= TOPLEVEL
;
2977 switch (ANSI(c
, term
->esc_query
)) {
2978 case '[': /* enter CSI mode */
2979 term
->termstate
= SEEN_CSI
;
2980 term
->esc_nargs
= 1;
2981 term
->esc_args
[0] = ARG_DEFAULT
;
2982 term
->esc_query
= FALSE
;
2984 case ']': /* OSC: xterm escape sequences */
2985 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
2986 compatibility(OTHER
);
2987 term
->termstate
= SEEN_OSC
;
2988 term
->esc_args
[0] = 0;
2990 case '7': /* DECSC: save cursor */
2991 compatibility(VT100
);
2992 save_cursor(term
, TRUE
);
2994 case '8': /* DECRC: restore cursor */
2995 compatibility(VT100
);
2996 save_cursor(term
, FALSE
);
2997 seen_disp_event(term
);
2999 case '=': /* DECKPAM: Keypad application mode */
3000 compatibility(VT100
);
3001 term
->app_keypad_keys
= TRUE
;
3003 case '>': /* DECKPNM: Keypad numeric mode */
3004 compatibility(VT100
);
3005 term
->app_keypad_keys
= FALSE
;
3007 case 'D': /* IND: exactly equivalent to LF */
3008 compatibility(VT100
);
3009 if (term
->curs
.y
== term
->marg_b
)
3010 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3011 else if (term
->curs
.y
< term
->rows
- 1)
3013 term
->wrapnext
= FALSE
;
3014 seen_disp_event(term
);
3016 case 'E': /* NEL: exactly equivalent to CR-LF */
3017 compatibility(VT100
);
3019 if (term
->curs
.y
== term
->marg_b
)
3020 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3021 else if (term
->curs
.y
< term
->rows
- 1)
3023 term
->wrapnext
= FALSE
;
3024 seen_disp_event(term
);
3026 case 'M': /* RI: reverse index - backwards LF */
3027 compatibility(VT100
);
3028 if (term
->curs
.y
== term
->marg_t
)
3029 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
3030 else if (term
->curs
.y
> 0)
3032 term
->wrapnext
= FALSE
;
3033 seen_disp_event(term
);
3035 case 'Z': /* DECID: terminal type query */
3036 compatibility(VT100
);
3038 ldisc_send(term
->ldisc
, term
->id_string
,
3039 strlen(term
->id_string
), 0);
3041 case 'c': /* RIS: restore power-on settings */
3042 compatibility(VT100
);
3044 if (term
->ldisc
) /* cause ldisc to notice changes */
3045 ldisc_send(term
->ldisc
, NULL
, 0, 0);
3046 if (term
->reset_132
) {
3047 if (!term
->cfg
.no_remote_resize
)
3048 request_resize(term
->frontend
, 80, term
->rows
);
3049 term
->reset_132
= 0;
3052 seen_disp_event(term
);
3054 case 'H': /* HTS: set a tab */
3055 compatibility(VT100
);
3056 term
->tabs
[term
->curs
.x
] = TRUE
;
3059 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3060 compatibility(VT100
);
3066 for (i
= 0; i
< term
->rows
; i
++) {
3067 ldata
= scrlineptr(i
);
3068 for (j
= 0; j
< term
->cols
; j
++) {
3069 copy_termchar(ldata
, j
,
3070 &term
->basic_erase_char
);
3071 ldata
->chars
[j
].chr
= 'E';
3073 ldata
->lattr
= LATTR_NORM
;
3076 seen_disp_event(term
);
3077 scrtop
.x
= scrtop
.y
= 0;
3079 scrbot
.y
= term
->rows
;
3080 check_selection(term
, scrtop
, scrbot
);
3084 case ANSI('3', '#'):
3085 case ANSI('4', '#'):
3086 case ANSI('5', '#'):
3087 case ANSI('6', '#'):
3088 compatibility(VT100
);
3092 switch (ANSI(c
, term
->esc_query
)) {
3093 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3096 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3099 case ANSI('5', '#'): /* DECSWL: normal */
3100 nlattr
= LATTR_NORM
;
3102 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3103 nlattr
= LATTR_WIDE
;
3106 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
3109 /* GZD4: G0 designate 94-set */
3110 case ANSI('A', '('):
3111 compatibility(VT100
);
3112 if (!term
->cfg
.no_remote_charset
)
3113 term
->cset_attr
[0] = CSET_GBCHR
;
3115 case ANSI('B', '('):
3116 compatibility(VT100
);
3117 if (!term
->cfg
.no_remote_charset
)
3118 term
->cset_attr
[0] = CSET_ASCII
;
3120 case ANSI('0', '('):
3121 compatibility(VT100
);
3122 if (!term
->cfg
.no_remote_charset
)
3123 term
->cset_attr
[0] = CSET_LINEDRW
;
3125 case ANSI('U', '('):
3126 compatibility(OTHER
);
3127 if (!term
->cfg
.no_remote_charset
)
3128 term
->cset_attr
[0] = CSET_SCOACS
;
3130 /* G1D4: G1-designate 94-set */
3131 case ANSI('A', ')'):
3132 compatibility(VT100
);
3133 if (!term
->cfg
.no_remote_charset
)
3134 term
->cset_attr
[1] = CSET_GBCHR
;
3136 case ANSI('B', ')'):
3137 compatibility(VT100
);
3138 if (!term
->cfg
.no_remote_charset
)
3139 term
->cset_attr
[1] = CSET_ASCII
;
3141 case ANSI('0', ')'):
3142 compatibility(VT100
);
3143 if (!term
->cfg
.no_remote_charset
)
3144 term
->cset_attr
[1] = CSET_LINEDRW
;
3146 case ANSI('U', ')'):
3147 compatibility(OTHER
);
3148 if (!term
->cfg
.no_remote_charset
)
3149 term
->cset_attr
[1] = CSET_SCOACS
;
3151 /* DOCS: Designate other coding system */
3152 case ANSI('8', '%'): /* Old Linux code */
3153 case ANSI('G', '%'):
3154 compatibility(OTHER
);
3155 if (!term
->cfg
.no_remote_charset
)
3158 case ANSI('@', '%'):
3159 compatibility(OTHER
);
3160 if (!term
->cfg
.no_remote_charset
)
3166 term
->termstate
= TOPLEVEL
; /* default */
3168 if (term
->esc_nargs
<= ARGS_MAX
) {
3169 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
3170 term
->esc_args
[term
->esc_nargs
- 1] = 0;
3171 term
->esc_args
[term
->esc_nargs
- 1] =
3172 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
3174 term
->termstate
= SEEN_CSI
;
3175 } else if (c
== ';') {
3176 if (++term
->esc_nargs
<= ARGS_MAX
)
3177 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
3178 term
->termstate
= SEEN_CSI
;
3179 } else if (c
< '@') {
3180 if (term
->esc_query
)
3181 term
->esc_query
= -1;
3183 term
->esc_query
= TRUE
;
3185 term
->esc_query
= c
;
3186 term
->termstate
= SEEN_CSI
;
3188 switch (ANSI(c
, term
->esc_query
)) {
3189 case 'A': /* CUU: move up N lines */
3190 move(term
, term
->curs
.x
,
3191 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3192 seen_disp_event(term
);
3194 case 'e': /* VPR: move down N lines */
3195 compatibility(ANSI
);
3197 case 'B': /* CUD: Cursor down */
3198 move(term
, term
->curs
.x
,
3199 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3200 seen_disp_event(term
);
3202 case ANSI('c', '>'): /* DA: report xterm version */
3203 compatibility(OTHER
);
3204 /* this reports xterm version 136 so that VIM can
3205 use the drag messages from the mouse reporting */
3207 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
3209 case 'a': /* HPR: move right N cols */
3210 compatibility(ANSI
);
3212 case 'C': /* CUF: Cursor right */
3213 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
3215 seen_disp_event(term
);
3217 case 'D': /* CUB: move left N cols */
3218 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
3220 seen_disp_event(term
);
3222 case 'E': /* CNL: move down N lines and CR */
3223 compatibility(ANSI
);
3225 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3226 seen_disp_event(term
);
3228 case 'F': /* CPL: move up N lines and CR */
3229 compatibility(ANSI
);
3231 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3232 seen_disp_event(term
);
3235 case '`': /* HPA: set horizontal posn */
3236 compatibility(ANSI
);
3237 move(term
, def(term
->esc_args
[0], 1) - 1,
3239 seen_disp_event(term
);
3241 case 'd': /* VPA: set vertical posn */
3242 compatibility(ANSI
);
3243 move(term
, term
->curs
.x
,
3244 ((term
->dec_om ? term
->marg_t
: 0) +
3245 def(term
->esc_args
[0], 1) - 1),
3246 (term
->dec_om ?
2 : 0));
3247 seen_disp_event(term
);
3250 case 'f': /* HVP: set horz and vert posns at once */
3251 if (term
->esc_nargs
< 2)
3252 term
->esc_args
[1] = ARG_DEFAULT
;
3253 move(term
, def(term
->esc_args
[1], 1) - 1,
3254 ((term
->dec_om ? term
->marg_t
: 0) +
3255 def(term
->esc_args
[0], 1) - 1),
3256 (term
->dec_om ?
2 : 0));
3257 seen_disp_event(term
);
3259 case 'J': /* ED: erase screen or parts of it */
3261 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3264 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
3267 seen_disp_event(term
);
3269 case 'K': /* EL: erase line or parts of it */
3271 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3274 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
3276 seen_disp_event(term
);
3278 case 'L': /* IL: insert lines */
3279 compatibility(VT102
);
3280 if (term
->curs
.y
<= term
->marg_b
)
3281 scroll(term
, term
->curs
.y
, term
->marg_b
,
3282 -def(term
->esc_args
[0], 1), FALSE
);
3283 seen_disp_event(term
);
3285 case 'M': /* DL: delete lines */
3286 compatibility(VT102
);
3287 if (term
->curs
.y
<= term
->marg_b
)
3288 scroll(term
, term
->curs
.y
, term
->marg_b
,
3289 def(term
->esc_args
[0], 1),
3291 seen_disp_event(term
);
3293 case '@': /* ICH: insert chars */
3294 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3295 compatibility(VT102
);
3296 insch(term
, def(term
->esc_args
[0], 1));
3297 seen_disp_event(term
);
3299 case 'P': /* DCH: delete chars */
3300 compatibility(VT102
);
3301 insch(term
, -def(term
->esc_args
[0], 1));
3302 seen_disp_event(term
);
3304 case 'c': /* DA: terminal type query */
3305 compatibility(VT100
);
3306 /* This is the response for a VT102 */
3308 ldisc_send(term
->ldisc
, term
->id_string
,
3309 strlen(term
->id_string
), 0);
3311 case 'n': /* DSR: cursor position query */
3313 if (term
->esc_args
[0] == 6) {
3315 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
3317 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
3318 } else if (term
->esc_args
[0] == 5) {
3319 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
3323 case 'h': /* SM: toggle modes to high */
3325 compatibility(VT100
);
3328 for (i
= 0; i
< term
->esc_nargs
; i
++)
3329 toggle_mode(term
, term
->esc_args
[i
],
3330 term
->esc_query
, TRUE
);
3333 case 'i': /* MC: Media copy */
3335 compatibility(VT100
);
3337 if (term
->esc_nargs
!= 1) break;
3338 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
3339 term
->printing
= TRUE
;
3340 term
->only_printing
= !term
->esc_query
;
3341 term
->print_state
= 0;
3342 term_print_setup(term
);
3343 } else if (term
->esc_args
[0] == 4 &&
3345 term_print_finish(term
);
3349 case 'l': /* RM: toggle modes to low */
3351 compatibility(VT100
);
3354 for (i
= 0; i
< term
->esc_nargs
; i
++)
3355 toggle_mode(term
, term
->esc_args
[i
],
3356 term
->esc_query
, FALSE
);
3359 case 'g': /* TBC: clear tabs */
3360 compatibility(VT100
);
3361 if (term
->esc_nargs
== 1) {
3362 if (term
->esc_args
[0] == 0) {
3363 term
->tabs
[term
->curs
.x
] = FALSE
;
3364 } else if (term
->esc_args
[0] == 3) {
3366 for (i
= 0; i
< term
->cols
; i
++)
3367 term
->tabs
[i
] = FALSE
;
3371 case 'r': /* DECSTBM: set scroll margins */
3372 compatibility(VT100
);
3373 if (term
->esc_nargs
<= 2) {
3375 top
= def(term
->esc_args
[0], 1) - 1;
3376 bot
= (term
->esc_nargs
<= 1
3377 || term
->esc_args
[1] == 0 ?
3379 def(term
->esc_args
[1], term
->rows
)) - 1;
3380 if (bot
>= term
->rows
)
3381 bot
= term
->rows
- 1;
3382 /* VTTEST Bug 9 - if region is less than 2 lines
3383 * don't change region.
3385 if (bot
- top
> 0) {
3390 * I used to think the cursor should be
3391 * placed at the top of the newly marginned
3392 * area. Apparently not: VMS TPU falls over
3395 * Well actually it should for
3398 term
->curs
.y
= (term
->dec_om ?
3400 seen_disp_event(term
);
3404 case 'm': /* SGR: set graphics rendition */
3407 * A VT100 without the AVO only had one
3408 * attribute, either underline or
3409 * reverse video depending on the
3410 * cursor type, this was selected by
3414 * This is sometimes DIM, eg on the
3417 * This is sometimes INVIS various ANSI.
3419 * This like 22 disables BOLD, DIM and INVIS
3421 * The ANSI colours appear on any
3422 * terminal that has colour (obviously)
3423 * but the interaction between sgr0 and
3424 * the colours varies but is usually
3425 * related to the background colour
3426 * erase item. The interaction between
3427 * colour attributes and the mono ones
3428 * is also very implementation
3431 * The 39 and 49 attributes are likely
3432 * to be unimplemented.
3435 for (i
= 0; i
< term
->esc_nargs
; i
++) {
3436 switch (def(term
->esc_args
[i
], 0)) {
3437 case 0: /* restore defaults */
3438 term
->curr_attr
= term
->default_attr
;
3440 case 1: /* enable bold */
3441 compatibility(VT100AVO
);
3442 term
->curr_attr
|= ATTR_BOLD
;
3444 case 21: /* (enable double underline) */
3445 compatibility(OTHER
);
3446 case 4: /* enable underline */
3447 compatibility(VT100AVO
);
3448 term
->curr_attr
|= ATTR_UNDER
;
3450 case 5: /* enable blink */
3451 compatibility(VT100AVO
);
3452 term
->curr_attr
|= ATTR_BLINK
;
3454 case 6: /* SCO light bkgrd */
3455 compatibility(SCOANSI
);
3456 term
->blink_is_real
= FALSE
;
3457 term
->curr_attr
|= ATTR_BLINK
;
3458 term_schedule_tblink(term
);
3460 case 7: /* enable reverse video */
3461 term
->curr_attr
|= ATTR_REVERSE
;
3463 case 10: /* SCO acs off */
3464 compatibility(SCOANSI
);
3465 if (term
->cfg
.no_remote_charset
) break;
3466 term
->sco_acs
= 0; break;
3467 case 11: /* SCO acs on */
3468 compatibility(SCOANSI
);
3469 if (term
->cfg
.no_remote_charset
) break;
3470 term
->sco_acs
= 1; break;
3471 case 12: /* SCO acs on, |0x80 */
3472 compatibility(SCOANSI
);
3473 if (term
->cfg
.no_remote_charset
) break;
3474 term
->sco_acs
= 2; break;
3475 case 22: /* disable bold */
3476 compatibility2(OTHER
, VT220
);
3477 term
->curr_attr
&= ~ATTR_BOLD
;
3479 case 24: /* disable underline */
3480 compatibility2(OTHER
, VT220
);
3481 term
->curr_attr
&= ~ATTR_UNDER
;
3483 case 25: /* disable blink */
3484 compatibility2(OTHER
, VT220
);
3485 term
->curr_attr
&= ~ATTR_BLINK
;
3487 case 27: /* disable reverse video */
3488 compatibility2(OTHER
, VT220
);
3489 term
->curr_attr
&= ~ATTR_REVERSE
;
3500 term
->curr_attr
&= ~ATTR_FGMASK
;
3502 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3512 /* xterm-style bright foreground */
3513 term
->curr_attr
&= ~ATTR_FGMASK
;
3515 ((term
->esc_args
[i
] - 90 + 8)
3518 case 39: /* default-foreground */
3519 term
->curr_attr
&= ~ATTR_FGMASK
;
3520 term
->curr_attr
|= ATTR_DEFFG
;
3531 term
->curr_attr
&= ~ATTR_BGMASK
;
3533 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3543 /* xterm-style bright background */
3544 term
->curr_attr
&= ~ATTR_BGMASK
;
3546 ((term
->esc_args
[i
] - 100 + 8)
3549 case 49: /* default-background */
3550 term
->curr_attr
&= ~ATTR_BGMASK
;
3551 term
->curr_attr
|= ATTR_DEFBG
;
3553 case 38: /* xterm 256-colour mode */
3554 if (i
+2 < term
->esc_nargs
&&
3555 term
->esc_args
[i
+1] == 5) {
3556 term
->curr_attr
&= ~ATTR_FGMASK
;
3558 ((term
->esc_args
[i
+2] & 0xFF)
3563 case 48: /* xterm 256-colour mode */
3564 if (i
+2 < term
->esc_nargs
&&
3565 term
->esc_args
[i
+1] == 5) {
3566 term
->curr_attr
&= ~ATTR_BGMASK
;
3568 ((term
->esc_args
[i
+2] & 0xFF)
3575 set_erase_char(term
);
3578 case 's': /* save cursor */
3579 save_cursor(term
, TRUE
);
3581 case 'u': /* restore cursor */
3582 save_cursor(term
, FALSE
);
3583 seen_disp_event(term
);
3585 case 't': /* DECSLPP: set page size - ie window height */
3587 * VT340/VT420 sequence DECSLPP, DEC only allows values
3588 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3589 * illegal values (eg first arg 1..9) for window changing
3592 if (term
->esc_nargs
<= 1
3593 && (term
->esc_args
[0] < 1 ||
3594 term
->esc_args
[0] >= 24)) {
3595 compatibility(VT340TEXT
);
3596 if (!term
->cfg
.no_remote_resize
)
3597 request_resize(term
->frontend
, term
->cols
,
3598 def(term
->esc_args
[0], 24));
3600 } else if (term
->esc_nargs
>= 1 &&
3601 term
->esc_args
[0] >= 1 &&
3602 term
->esc_args
[0] < 24) {
3603 compatibility(OTHER
);
3605 switch (term
->esc_args
[0]) {
3609 set_iconic(term
->frontend
, FALSE
);
3612 set_iconic(term
->frontend
, TRUE
);
3615 if (term
->esc_nargs
>= 3) {
3616 if (!term
->cfg
.no_remote_resize
)
3617 move_window(term
->frontend
,
3618 def(term
->esc_args
[1], 0),
3619 def(term
->esc_args
[2], 0));
3623 /* We should resize the window to a given
3624 * size in pixels here, but currently our
3625 * resizing code isn't healthy enough to
3630 set_zorder(term
->frontend
, TRUE
);
3633 /* move to bottom */
3634 set_zorder(term
->frontend
, FALSE
);
3637 refresh_window(term
->frontend
);
3640 if (term
->esc_nargs
>= 3) {
3641 if (!term
->cfg
.no_remote_resize
)
3642 request_resize(term
->frontend
,
3643 def(term
->esc_args
[2], term
->cfg
.width
),
3644 def(term
->esc_args
[1], term
->cfg
.height
));
3648 if (term
->esc_nargs
>= 2)
3649 set_zoomed(term
->frontend
,
3655 ldisc_send(term
->ldisc
,
3656 is_iconic(term
->frontend
) ?
3657 "\033[1t" : "\033[2t", 4, 0);
3661 get_window_pos(term
->frontend
, &x
, &y
);
3662 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3663 ldisc_send(term
->ldisc
, buf
, len
, 0);
3668 get_window_pixels(term
->frontend
, &x
, &y
);
3669 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
3670 ldisc_send(term
->ldisc
, buf
, len
, 0);
3675 len
= sprintf(buf
, "\033[8;%d;%dt",
3676 term
->rows
, term
->cols
);
3677 ldisc_send(term
->ldisc
, buf
, len
, 0);
3682 * Hmmm. Strictly speaking we
3683 * should return `the size of the
3684 * screen in characters', but
3685 * that's not easy: (a) window
3686 * furniture being what it is it's
3687 * hard to compute, and (b) in
3688 * resize-font mode maximising the
3689 * window wouldn't change the
3690 * number of characters. *shrug*. I
3691 * think we'll ignore it for the
3692 * moment and see if anyone
3693 * complains, and then ask them
3694 * what they would like it to do.
3699 !term
->cfg
.no_remote_qtitle
) {
3700 p
= get_window_title(term
->frontend
, TRUE
);
3702 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3703 ldisc_send(term
->ldisc
, p
, len
, 0);
3704 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3709 !term
->cfg
.no_remote_qtitle
) {
3710 p
= get_window_title(term
->frontend
,FALSE
);
3712 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3713 ldisc_send(term
->ldisc
, p
, len
, 0);
3714 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3720 case 'S': /* SU: Scroll up */
3721 compatibility(SCOANSI
);
3722 scroll(term
, term
->marg_t
, term
->marg_b
,
3723 def(term
->esc_args
[0], 1), TRUE
);
3724 term
->wrapnext
= FALSE
;
3725 seen_disp_event(term
);
3727 case 'T': /* SD: Scroll down */
3728 compatibility(SCOANSI
);
3729 scroll(term
, term
->marg_t
, term
->marg_b
,
3730 -def(term
->esc_args
[0], 1), TRUE
);
3731 term
->wrapnext
= FALSE
;
3732 seen_disp_event(term
);
3734 case ANSI('|', '*'): /* DECSNLS */
3736 * Set number of lines on screen
3737 * VT420 uses VGA like hardware and can
3738 * support any size in reasonable range
3739 * (24..49 AIUI) with no default specified.
3741 compatibility(VT420
);
3742 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3743 if (!term
->cfg
.no_remote_resize
)
3744 request_resize(term
->frontend
, term
->cols
,
3745 def(term
->esc_args
[0],
3750 case ANSI('|', '$'): /* DECSCPP */
3752 * Set number of columns per page
3753 * Docs imply range is only 80 or 132, but
3756 compatibility(VT340TEXT
);
3757 if (term
->esc_nargs
<= 1) {
3758 if (!term
->cfg
.no_remote_resize
)
3759 request_resize(term
->frontend
,
3760 def(term
->esc_args
[0],
3761 term
->cfg
.width
), term
->rows
);
3765 case 'X': /* ECH: write N spaces w/o moving cursor */
3766 /* XXX VTTEST says this is vt220, vt510 manual
3768 compatibility(ANSIMIN
);
3770 int n
= def(term
->esc_args
[0], 1);
3772 int p
= term
->curs
.x
;
3773 termline
*cline
= scrlineptr(term
->curs
.y
);
3775 if (n
> term
->cols
- term
->curs
.x
)
3776 n
= term
->cols
- term
->curs
.x
;
3777 cursplus
= term
->curs
;
3779 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3780 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
3781 check_selection(term
, term
->curs
, cursplus
);
3783 copy_termchar(cline
, p
++,
3785 seen_disp_event(term
);
3788 case 'x': /* DECREQTPARM: report terminal characteristics */
3789 compatibility(VT100
);
3792 int i
= def(term
->esc_args
[0], 0);
3793 if (i
== 0 || i
== 1) {
3794 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
3796 ldisc_send(term
->ldisc
, buf
, 20, 0);
3800 case 'Z': /* CBT: BackTab for xterm */
3801 compatibility(OTHER
);
3803 int i
= def(term
->esc_args
[0], 1);
3804 pos old_curs
= term
->curs
;
3806 for(;i
>0 && term
->curs
.x
>0; i
--) {
3809 } while (term
->curs
.x
>0 &&
3810 !term
->tabs
[term
->curs
.x
]);
3812 check_selection(term
, old_curs
, term
->curs
);
3815 case ANSI('c', '='): /* Hide or Show Cursor */
3816 compatibility(SCOANSI
);
3817 switch(term
->esc_args
[0]) {
3818 case 0: /* hide cursor */
3819 term
->cursor_on
= FALSE
;
3821 case 1: /* restore cursor */
3822 term
->big_cursor
= FALSE
;
3823 term
->cursor_on
= TRUE
;
3825 case 2: /* block cursor */
3826 term
->big_cursor
= TRUE
;
3827 term
->cursor_on
= TRUE
;
3831 case ANSI('C', '='):
3833 * set cursor start on scanline esc_args[0] and
3834 * end on scanline esc_args[1].If you set
3835 * the bottom scan line to a value less than
3836 * the top scan line, the cursor will disappear.
3838 compatibility(SCOANSI
);
3839 if (term
->esc_nargs
>= 2) {
3840 if (term
->esc_args
[0] > term
->esc_args
[1])
3841 term
->cursor_on
= FALSE
;
3843 term
->cursor_on
= TRUE
;
3846 case ANSI('D', '='):
3847 compatibility(SCOANSI
);
3848 term
->blink_is_real
= FALSE
;
3849 term_schedule_tblink(term
);
3850 if (term
->esc_args
[0]>=1)
3851 term
->curr_attr
|= ATTR_BLINK
;
3853 term
->curr_attr
&= ~ATTR_BLINK
;
3855 case ANSI('E', '='):
3856 compatibility(SCOANSI
);
3857 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
3858 term_schedule_tblink(term
);
3860 case ANSI('F', '='): /* set normal foreground */
3861 compatibility(SCOANSI
);
3862 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3864 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3865 (term
->esc_args
[0] & 0x8)) <<
3867 term
->curr_attr
&= ~ATTR_FGMASK
;
3868 term
->curr_attr
|= colour
;
3869 term
->default_attr
&= ~ATTR_FGMASK
;
3870 term
->default_attr
|= colour
;
3873 case ANSI('G', '='): /* set normal background */
3874 compatibility(SCOANSI
);
3875 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3877 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3878 (term
->esc_args
[0] & 0x8)) <<
3880 term
->curr_attr
&= ~ATTR_BGMASK
;
3881 term
->curr_attr
|= colour
;
3882 term
->default_attr
&= ~ATTR_BGMASK
;
3883 term
->default_attr
|= colour
;
3886 case ANSI('L', '='):
3887 compatibility(SCOANSI
);
3888 term
->use_bce
= (term
->esc_args
[0] <= 0);
3889 set_erase_char(term
);
3891 case ANSI('p', '"'): /* DECSCL: set compat level */
3893 * Allow the host to make this emulator a
3894 * 'perfect' VT102. This first appeared in
3895 * the VT220, but we do need to get back to
3896 * PuTTY mode so I won't check it.
3898 * The arg in 40..42,50 are a PuTTY extension.
3899 * The 2nd arg, 8bit vs 7bit is not checked.
3901 * Setting VT102 mode should also change
3902 * the Fkeys to generate PF* codes as a
3903 * real VT102 has no Fkeys. The VT220 does
3904 * this, F11..F13 become ESC,BS,LF other
3905 * Fkeys send nothing.
3907 * Note ESC c will NOT change this!
3910 switch (term
->esc_args
[0]) {
3912 term
->compatibility_level
&= ~TM_VTXXX
;
3913 term
->compatibility_level
|= TM_VT102
;
3916 term
->compatibility_level
&= ~TM_VTXXX
;
3917 term
->compatibility_level
|= TM_VT220
;
3921 if (term
->esc_args
[0] > 60 &&
3922 term
->esc_args
[0] < 70)
3923 term
->compatibility_level
|= TM_VTXXX
;
3927 term
->compatibility_level
&= TM_VTXXX
;
3930 term
->compatibility_level
= TM_PUTTY
;
3933 term
->compatibility_level
= TM_SCOANSI
;
3937 term
->compatibility_level
= TM_PUTTY
;
3943 /* Change the response to CSI c */
3944 if (term
->esc_args
[0] == 50) {
3947 strcpy(term
->id_string
, "\033[?");
3948 for (i
= 1; i
< term
->esc_nargs
; i
++) {
3950 strcat(term
->id_string
, ";");
3951 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
3952 strcat(term
->id_string
, lbuf
);
3954 strcat(term
->id_string
, "c");
3957 /* Is this a good idea ?
3958 * Well we should do a soft reset at this point ...
3960 if (!has_compat(VT420
) && has_compat(VT100
)) {
3961 if (!term
->cfg
.no_remote_resize
) {
3962 if (term
->reset_132
)
3963 request_resize(132, 24);
3965 request_resize(80, 24);
3973 term
->osc_w
= FALSE
;
3975 case 'P': /* Linux palette sequence */
3976 term
->termstate
= SEEN_OSC_P
;
3977 term
->osc_strlen
= 0;
3979 case 'R': /* Linux palette reset */
3980 palette_reset(term
->frontend
);
3981 term_invalidate(term
);
3982 term
->termstate
= TOPLEVEL
;
3984 case 'W': /* word-set */
3985 term
->termstate
= SEEN_OSC_W
;
3998 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4002 * Grotty hack to support xterm and DECterm title
4003 * sequences concurrently.
4005 if (term
->esc_args
[0] == 2) {
4006 term
->esc_args
[0] = 1;
4009 /* else fall through */
4011 term
->termstate
= OSC_STRING
;
4012 term
->osc_strlen
= 0;
4017 * This OSC stuff is EVIL. It takes just one character to get into
4018 * sysline mode and it's not initially obvious how to get out.
4019 * So I've added CR and LF as string aborts.
4020 * This shouldn't effect compatibility as I believe embedded
4021 * control characters are supposed to be interpreted (maybe?)
4022 * and they don't display anything useful anyway.
4026 if (c
== '\012' || c
== '\015') {
4027 term
->termstate
= TOPLEVEL
;
4028 } else if (c
== 0234 || c
== '\007') {
4030 * These characters terminate the string; ST and BEL
4031 * terminate the sequence and trigger instant
4032 * processing of it, whereas ESC goes back to SEEN_ESC
4033 * mode unless it is followed by \, in which case it is
4034 * synonymous with ST in the first place.
4037 term
->termstate
= TOPLEVEL
;
4038 } else if (c
== '\033')
4039 term
->termstate
= OSC_MAYBE_ST
;
4040 else if (term
->osc_strlen
< OSC_STR_MAX
)
4041 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
4045 int max
= (term
->osc_strlen
== 0 ?
21 : 16);
4047 if ((int)c
>= '0' && (int)c
<= '9')
4049 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
4051 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
4054 term
->termstate
= TOPLEVEL
;
4057 term
->osc_string
[term
->osc_strlen
++] = val
;
4058 if (term
->osc_strlen
>= 7) {
4059 palette_set(term
->frontend
, term
->osc_string
[0],
4060 term
->osc_string
[1] * 16 + term
->osc_string
[2],
4061 term
->osc_string
[3] * 16 + term
->osc_string
[4],
4062 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
4063 term_invalidate(term
);
4064 term
->termstate
= TOPLEVEL
;
4080 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4083 term
->termstate
= OSC_STRING
;
4084 term
->osc_strlen
= 0;
4088 term
->termstate
= TOPLEVEL
;
4089 seen_disp_event(term
);
4092 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
4095 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
4098 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
4101 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
4104 * From the VT100 Manual
4105 * NOTE: The special graphics characters in the VT100
4106 * are different from those in the VT52
4108 * From VT102 manual:
4109 * 137 _ Blank - Same
4110 * 140 ` Reserved - Humm.
4111 * 141 a Solid rectangle - Similar
4112 * 142 b 1/ - Top half of fraction for the
4113 * 143 c 3/ - subscript numbers below.
4116 * 146 f Degrees - Same
4117 * 147 g Plus or minus - Same
4119 * 151 i Ellipsis (dots)
4122 * 154 l Bar at scan 0
4123 * 155 m Bar at scan 1
4124 * 156 n Bar at scan 2
4125 * 157 o Bar at scan 3 - Similar
4126 * 160 p Bar at scan 4 - Similar
4127 * 161 q Bar at scan 5 - Similar
4128 * 162 r Bar at scan 6 - Same
4129 * 163 s Bar at scan 7 - Similar
4144 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
4147 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
4150 move(term
, 0, 0, 0);
4153 if (term
->curs
.y
== 0)
4154 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
4155 else if (term
->curs
.y
> 0)
4157 term
->wrapnext
= FALSE
;
4160 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4164 erase_lots(term
, TRUE
, FALSE
, TRUE
);
4168 /* XXX Print cursor line */
4171 /* XXX Start controller mode */
4174 /* XXX Stop controller mode */
4178 term
->termstate
= VT52_Y1
;
4182 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
4185 term
->app_keypad_keys
= TRUE
;
4188 term
->app_keypad_keys
= FALSE
;
4191 /* XXX This should switch to VT100 mode not current or default
4192 * VT mode. But this will only have effect in a VT220+
4195 term
->vt52_mode
= FALSE
;
4196 term
->blink_is_real
= term
->cfg
.blinktext
;
4197 term_schedule_tblink(term
);
4201 /* XXX Enter auto print mode */
4204 /* XXX Exit auto print mode */
4207 /* XXX Print screen */
4213 /* compatibility(ATARI) */
4214 move(term
, 0, 0, 0);
4215 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4219 /* compatibility(ATARI) */
4220 if (term
->curs
.y
<= term
->marg_b
)
4221 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
4224 /* compatibility(ATARI) */
4225 if (term
->curs
.y
<= term
->marg_b
)
4226 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
4229 /* compatibility(ATARI) */
4230 term
->termstate
= VT52_FG
;
4233 /* compatibility(ATARI) */
4234 term
->termstate
= VT52_BG
;
4237 /* compatibility(ATARI) */
4238 erase_lots(term
, FALSE
, TRUE
, FALSE
);
4242 /* compatibility(ATARI) */
4243 term
->cursor_on
= TRUE
;
4246 /* compatibility(ATARI) */
4247 term
->cursor_on
= FALSE
;
4249 /* case 'j': Save cursor position - broken on ST */
4250 /* case 'k': Restore cursor position */
4252 /* compatibility(ATARI) */
4253 erase_lots(term
, TRUE
, TRUE
, TRUE
);
4255 term
->wrapnext
= FALSE
;
4258 /* compatibility(ATARI) */
4259 erase_lots(term
, TRUE
, TRUE
, FALSE
);
4262 /* compatibility(ATARI) */
4263 term
->curr_attr
|= ATTR_REVERSE
;
4266 /* compatibility(ATARI) */
4267 term
->curr_attr
&= ~ATTR_REVERSE
;
4269 case 'v': /* wrap Autowrap on - Wyse style */
4270 /* compatibility(ATARI) */
4273 case 'w': /* Autowrap off */
4274 /* compatibility(ATARI) */
4279 /* compatibility(OTHER) */
4280 term
->vt52_bold
= FALSE
;
4281 term
->curr_attr
= ATTR_DEFAULT
;
4282 set_erase_char(term
);
4285 /* compatibility(VI50) */
4286 term
->curr_attr
|= ATTR_UNDER
;
4289 /* compatibility(VI50) */
4290 term
->curr_attr
&= ~ATTR_UNDER
;
4293 /* compatibility(VI50) */
4294 term
->vt52_bold
= TRUE
;
4295 term
->curr_attr
|= ATTR_BOLD
;
4298 /* compatibility(VI50) */
4299 term
->vt52_bold
= FALSE
;
4300 term
->curr_attr
&= ~ATTR_BOLD
;
4306 term
->termstate
= VT52_Y2
;
4307 move(term
, term
->curs
.x
, c
- ' ', 0);
4310 term
->termstate
= TOPLEVEL
;
4311 move(term
, c
- ' ', term
->curs
.y
, 0);
4316 term
->termstate
= TOPLEVEL
;
4317 term
->curr_attr
&= ~ATTR_FGMASK
;
4318 term
->curr_attr
&= ~ATTR_BOLD
;
4319 term
->curr_attr
|= (c
& 0xF) << ATTR_FGSHIFT
;
4320 set_erase_char(term
);
4323 term
->termstate
= TOPLEVEL
;
4324 term
->curr_attr
&= ~ATTR_BGMASK
;
4325 term
->curr_attr
&= ~ATTR_BLINK
;
4326 term
->curr_attr
|= (c
& 0xF) << ATTR_BGSHIFT
;
4327 set_erase_char(term
);
4330 default: break; /* placate gcc warning about enum use */
4332 if (term
->selstate
!= NO_SELECTION
) {
4333 pos cursplus
= term
->curs
;
4335 check_selection(term
, term
->curs
, cursplus
);
4339 term_print_flush(term
);
4340 logflush(term
->logctx
);
4344 * To prevent having to run the reasonably tricky bidi algorithm
4345 * too many times, we maintain a cache of the last lineful of data
4346 * fed to the algorithm on each line of the display.
4348 static int term_bidi_cache_hit(Terminal
*term
, int line
,
4349 termchar
*lbefore
, int width
)
4353 if (!term
->pre_bidi_cache
)
4354 return FALSE
; /* cache doesn't even exist yet! */
4356 if (line
>= term
->bidi_cache_size
)
4357 return FALSE
; /* cache doesn't have this many lines */
4359 if (!term
->pre_bidi_cache
[line
].chars
)
4360 return FALSE
; /* cache doesn't contain _this_ line */
4362 if (term
->pre_bidi_cache
[line
].width
!= width
)
4363 return FALSE
; /* line is wrong width */
4365 for (i
= 0; i
< width
; i
++)
4366 if (!termchars_equal(term
->pre_bidi_cache
[line
].chars
+i
, lbefore
+i
))
4367 return FALSE
; /* line doesn't match cache */
4369 return TRUE
; /* it didn't match. */
4372 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
4373 termchar
*lafter
, bidi_char
*wcTo
,
4378 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
4379 int j
= term
->bidi_cache_size
;
4380 term
->bidi_cache_size
= line
+1;
4381 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
4382 term
->bidi_cache_size
,
4383 struct bidi_cache_entry
);
4384 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
4385 term
->bidi_cache_size
,
4386 struct bidi_cache_entry
);
4387 while (j
< term
->bidi_cache_size
) {
4388 term
->pre_bidi_cache
[j
].chars
=
4389 term
->post_bidi_cache
[j
].chars
= NULL
;
4390 term
->pre_bidi_cache
[j
].width
=
4391 term
->post_bidi_cache
[j
].width
= -1;
4396 sfree(term
->pre_bidi_cache
[line
].chars
);
4397 sfree(term
->post_bidi_cache
[line
].chars
);
4399 term
->pre_bidi_cache
[line
].width
= width
;
4400 term
->pre_bidi_cache
[line
].chars
= snewn(width
, termchar
);
4401 term
->post_bidi_cache
[line
].width
= width
;
4402 term
->post_bidi_cache
[line
].chars
= snewn(width
, termchar
);
4403 term
->post_bidi_cache
[line
].forward
= snewn(width
, int);
4404 term
->post_bidi_cache
[line
].backward
= snewn(width
, int);
4406 memcpy(term
->pre_bidi_cache
[line
].chars
, lbefore
, width
* TSIZE
);
4407 memcpy(term
->post_bidi_cache
[line
].chars
, lafter
, width
* TSIZE
);
4408 memset(term
->post_bidi_cache
[line
].forward
, 0, width
* sizeof(int));
4409 memset(term
->post_bidi_cache
[line
].backward
, 0, width
* sizeof(int));
4411 for (i
= 0; i
< width
; i
++) {
4412 int p
= wcTo
[i
].index
;
4414 assert(0 <= p
&& p
< width
);
4416 term
->post_bidi_cache
[line
].backward
[i
] = p
;
4417 term
->post_bidi_cache
[line
].forward
[p
] = i
;
4422 * Prepare the bidi information for a screen line. Returns the
4423 * transformed list of termchars, or NULL if no transformation at
4424 * all took place (because bidi is disabled). If return was
4425 * non-NULL, auxiliary information such as the forward and reverse
4426 * mappings of permutation position are available in
4427 * term->post_bidi_cache[scr_y].*.
4429 static termchar
*term_bidi_line(Terminal
*term
, struct termline
*ldata
,
4435 /* Do Arabic shaping and bidi. */
4436 if(!term
->cfg
.bidi
|| !term
->cfg
.arabicshaping
) {
4438 if (!term_bidi_cache_hit(term
, scr_y
, ldata
->chars
, term
->cols
)) {
4440 if (term
->wcFromTo_size
< term
->cols
) {
4441 term
->wcFromTo_size
= term
->cols
;
4442 term
->wcFrom
= sresize(term
->wcFrom
, term
->wcFromTo_size
,
4444 term
->wcTo
= sresize(term
->wcTo
, term
->wcFromTo_size
,
4448 for(it
=0; it
<term
->cols
; it
++)
4450 unsigned long uc
= (ldata
->chars
[it
].chr
);
4452 switch (uc
& CSET_MASK
) {
4454 if (!term
->cfg
.rawcnp
) {
4455 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4459 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4462 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4465 switch (uc
& CSET_MASK
) {
4467 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4470 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4474 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4476 term
->wcFrom
[it
].index
= it
;
4480 do_bidi(term
->wcFrom
, term
->cols
);
4482 /* this is saved iff done from inside the shaping */
4483 if(!term
->cfg
.bidi
&& term
->cfg
.arabicshaping
)
4484 for(it
=0; it
<term
->cols
; it
++)
4485 term
->wcTo
[it
] = term
->wcFrom
[it
];
4487 if(!term
->cfg
.arabicshaping
)
4488 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4490 if (term
->ltemp_size
< ldata
->size
) {
4491 term
->ltemp_size
= ldata
->size
;
4492 term
->ltemp
= sresize(term
->ltemp
, term
->ltemp_size
,
4496 memcpy(term
->ltemp
, ldata
->chars
, ldata
->size
* TSIZE
);
4498 for(it
=0; it
<term
->cols
; it
++)
4500 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4501 if (term
->ltemp
[it
].cc_next
)
4502 term
->ltemp
[it
].cc_next
-=
4503 it
- term
->wcTo
[it
].index
;
4505 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4506 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4508 term_bidi_cache_store(term
, scr_y
, ldata
->chars
,
4509 term
->ltemp
, term
->wcTo
, ldata
->size
);
4511 lchars
= term
->ltemp
;
4513 lchars
= term
->post_bidi_cache
[scr_y
].chars
;
4523 * Given a context, update the window. Out of paranoia, we don't
4524 * allow WM_PAINT responses to do scrolling optimisations.
4526 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
4528 int i
, j
, our_curs_y
, our_curs_x
;
4533 termchar cursor_background
;
4534 #ifdef OPTIMISE_SCROLL
4535 struct scrollregion
*sr
;
4536 #endif /* OPTIMISE_SCROLL */
4538 cursor_background
= term
->basic_erase_char
;
4541 ch
= snewn(chlen
, wchar_t);
4543 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
4546 * screen array, disptop, scrtop,
4548 * cfg.blinkpc, blink_is_real, tblinker,
4549 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4552 /* Has the cursor position or type changed ? */
4553 if (term
->cursor_on
) {
4554 if (term
->has_focus
) {
4555 if (term
->cblinker
|| !term
->cfg
.blink_cur
)
4556 cursor
= TATTR_ACTCURS
;
4560 cursor
= TATTR_PASCURS
;
4562 cursor
|= TATTR_RIGHTCURS
;
4565 our_curs_y
= term
->curs
.y
- term
->disptop
;
4568 * Adjust the cursor position:
4570 * - in the case where it's resting on the right-hand half
4571 * of a CJK wide character. xterm's behaviour here,
4572 * which seems adequate to me, is to display the cursor
4573 * covering the _whole_ character, exactly as if it were
4574 * one space to the left.
4576 termline
*ldata
= lineptr(term
->curs
.y
);
4579 our_curs_x
= term
->curs
.x
;
4581 if ( (lchars
= term_bidi_line(term
, ldata
, our_curs_y
)) != NULL
) {
4582 our_curs_x
= term
->post_bidi_cache
[our_curs_y
].forward
[our_curs_x
];
4584 lchars
= ldata
->chars
;
4586 if (our_curs_x
> 0 &&
4587 lchars
[our_curs_x
].chr
== UCSWIDE
)
4594 * If the cursor is not where it was last time we painted, and
4595 * its previous position is visible on screen, invalidate its
4596 * previous position.
4598 if (term
->dispcursy
>= 0 &&
4599 (term
->curstype
!= cursor
||
4600 term
->dispcursy
!= our_curs_y
||
4601 term
->dispcursx
!= our_curs_x
)) {
4602 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
4605 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
4606 dispcurs
[-1].attr
|= ATTR_INVALID
;
4607 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
4608 dispcurs
[1].attr
|= ATTR_INVALID
;
4609 dispcurs
->attr
|= ATTR_INVALID
;
4613 term
->dispcursx
= term
->dispcursy
= -1;
4615 #ifdef OPTIMISE_SCROLL
4617 sr
= term
->scrollhead
;
4619 struct scrollregion
*next
= sr
->next
;
4620 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
4624 term
->scrollhead
= term
->scrolltail
= NULL
;
4625 #endif /* OPTIMISE_SCROLL */
4627 /* The normal screen data */
4628 for (i
= 0; i
< term
->rows
; i
++) {
4631 int dirty_line
, dirty_run
, selected
;
4632 unsigned long attr
= 0, cset
= 0;
4633 int updated_line
= 0;
4636 int last_run_dirty
= 0;
4639 scrpos
.y
= i
+ term
->disptop
;
4640 ldata
= lineptr(scrpos
.y
);
4642 dirty_run
= dirty_line
= (ldata
->lattr
!=
4643 term
->disptext
[i
]->lattr
);
4644 term
->disptext
[i
]->lattr
= ldata
->lattr
;
4646 /* Do Arabic shaping and bidi. */
4647 lchars
= term_bidi_line(term
, ldata
, i
);
4649 backward
= term
->post_bidi_cache
[i
].backward
;
4651 lchars
= ldata
->chars
;
4655 for (j
= 0; j
< term
->cols
; j
++) {
4656 unsigned long tattr
, tchar
;
4657 termchar
*d
= lchars
+ j
;
4658 int break_run
, do_copy
;
4659 scrpos
.x
= backward ? backward
[j
] : j
;
4664 if (!term
->cfg
.ansi_colour
)
4665 tattr
= (tattr
& ~(ATTR_FGMASK
| ATTR_BGMASK
)) |
4666 ATTR_DEFFG
| ATTR_DEFBG
;
4668 if (!term
->cfg
.xterm_256_colour
) {
4670 colour
= (tattr
& ATTR_FGMASK
) >> ATTR_FGSHIFT
;
4671 if (colour
>= 16 && colour
< 256)
4672 tattr
= (tattr
&~ ATTR_FGMASK
) | ATTR_DEFFG
;
4673 colour
= (tattr
& ATTR_BGMASK
) >> ATTR_BGSHIFT
;
4674 if (colour
>= 16 && colour
< 256)
4675 tattr
= (tattr
&~ ATTR_BGMASK
) | ATTR_DEFBG
;
4678 switch (tchar
& CSET_MASK
) {
4680 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4683 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4686 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4689 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4692 /* Video reversing things */
4693 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4694 if (term
->seltype
== LEXICOGRAPHIC
)
4695 selected
= (posle(term
->selstart
, scrpos
) &&
4696 poslt(scrpos
, term
->selend
));
4698 selected
= (posPle(term
->selstart
, scrpos
) &&
4699 posPlt(scrpos
, term
->selend
));
4703 ^ (selected ? ATTR_REVERSE
: 0));
4705 /* 'Real' blinking ? */
4706 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4707 if (term
->has_focus
&& term
->tblinker
) {
4708 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4710 tattr
&= ~ATTR_BLINK
;
4714 * Check the font we'll _probably_ be using to see if
4715 * the character is wide when we don't want it to be.
4717 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4718 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4720 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4721 tattr
|= ATTR_NARROW
;
4722 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4723 tattr
|= ATTR_NARROW
;
4725 /* Cursor here ? Save the 'background' */
4726 if (i
== our_curs_y
&& j
== our_curs_x
) {
4728 cursor_background
.chr
= tchar
;
4729 cursor_background
.attr
= tattr
;
4730 /* For once, this cc_next field is an absolute index in lchars */
4732 cursor_background
.cc_next
= d
->cc_next
+ j
;
4734 cursor_background
.cc_next
= 0;
4735 term
->dispcursx
= j
;
4736 term
->dispcursy
= i
;
4739 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
4742 break_run
= ((tattr
^ attr
) & term
->attr_mask
) != 0;
4744 /* Special hack for VT100 Linedraw glyphs */
4745 if (tchar
>= 0x23BA && tchar
<= 0x23BD)
4749 * Separate out sequences of characters that have the
4750 * same CSET, if that CSET is a magic one.
4752 if (CSET_OF(tchar
) != cset
)
4756 * Break on both sides of any combined-character cell.
4758 if (d
->cc_next
!= 0 ||
4759 (j
> 0 && d
[-1].cc_next
!= 0))
4762 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
4763 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
4764 term
->disptext
[i
]->chars
[j
].attr
== tattr
)
4766 else if (!dirty_run
&& ccount
== 1)
4771 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
4772 do_text(ctx
, start
, i
, ch
, ccount
, attr
, ldata
->lattr
);
4778 cset
= CSET_OF(tchar
);
4779 if (term
->ucsdata
->dbcs_screenfont
)
4780 last_run_dirty
= dirty_run
;
4781 dirty_run
= dirty_line
;
4785 if (!termchars_equal_override(&term
->disptext
[i
]->chars
[j
],
4791 if (ccount
>= chlen
) {
4792 chlen
= ccount
+ 256;
4793 ch
= sresize(ch
, chlen
, wchar_t);
4795 ch
[ccount
++] = (wchar_t) tchar
;
4800 while (dd
->cc_next
) {
4801 unsigned long schar
;
4806 switch (schar
& CSET_MASK
) {
4808 schar
= term
->ucsdata
->unitab_line
[schar
& 0xFF];
4811 schar
= term
->ucsdata
->unitab_xterm
[schar
& 0xFF];
4814 schar
= term
->ucsdata
->unitab_scoacs
[schar
&0xFF];
4818 if (ccount
>= chlen
) {
4819 chlen
= ccount
+ 256;
4820 ch
= sresize(ch
, chlen
, wchar_t);
4822 ch
[ccount
++] = (wchar_t) schar
;
4825 attr
|= TATTR_COMBINING
;
4829 copy_termchar(term
->disptext
[i
], j
, d
);
4830 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
4831 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
4834 /* If it's a wide char step along to the next one. */
4835 if (tattr
& ATTR_WIDE
) {
4836 if (++j
< term
->cols
) {
4839 * By construction above, the cursor should not
4840 * be on the right-hand half of this character.
4843 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
4844 if (!termchars_equal(&term
->disptext
[i
]->chars
[j
], d
))
4846 copy_termchar(term
->disptext
[i
], j
, d
);
4850 if (dirty_run
&& ccount
> 0) {
4851 do_text(ctx
, start
, i
, ch
, ccount
, attr
, ldata
->lattr
);
4855 /* Cursor on this line ? (and changed) */
4856 if (i
== our_curs_y
&& (term
->curstype
!= cursor
|| updated_line
)) {
4857 ch
[0] = (wchar_t) cursor_background
.chr
;
4858 attr
= cursor_background
.attr
| cursor
;
4861 if (cursor_background
.cc_next
) {
4862 termchar
*dd
= ldata
->chars
+ cursor_background
.cc_next
;
4865 unsigned long schar
;
4868 switch (schar
& CSET_MASK
) {
4870 schar
= term
->ucsdata
->unitab_line
[schar
& 0xFF];
4873 schar
= term
->ucsdata
->unitab_xterm
[schar
& 0xFF];
4876 schar
= term
->ucsdata
->unitab_scoacs
[schar
&0xFF];
4880 if (ccount
>= chlen
) {
4881 chlen
= ccount
+ 256;
4882 ch
= sresize(ch
, chlen
, wchar_t);
4884 ch
[ccount
++] = (wchar_t) schar
;
4892 attr
|= TATTR_COMBINING
;
4895 do_cursor(ctx
, our_curs_x
, i
, ch
, ccount
, attr
, ldata
->lattr
);
4896 term
->curstype
= cursor
;
4906 * Invalidate the whole screen so it will be repainted in full.
4908 void term_invalidate(Terminal
*term
)
4912 for (i
= 0; i
< term
->rows
; i
++)
4913 for (j
= 0; j
< term
->cols
; j
++)
4914 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4916 term_schedule_update(term
);
4920 * Paint the window in response to a WM_PAINT message.
4922 void term_paint(Terminal
*term
, Context ctx
,
4923 int left
, int top
, int right
, int bottom
, int immediately
)
4926 if (left
< 0) left
= 0;
4927 if (top
< 0) top
= 0;
4928 if (right
>= term
->cols
) right
= term
->cols
-1;
4929 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
4931 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
4932 if ((term
->disptext
[i
]->lattr
& LATTR_MODE
) == LATTR_NORM
)
4933 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
4934 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4936 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
4937 term
->disptext
[i
]->chars
[j
].attr
= ATTR_INVALID
;
4941 do_paint (term
, ctx
, FALSE
);
4943 term_schedule_update(term
);
4948 * Attempt to scroll the scrollback. The second parameter gives the
4949 * position we want to scroll to; the first is +1 to denote that
4950 * this position is relative to the beginning of the scrollback, -1
4951 * to denote it is relative to the end, and 0 to denote that it is
4952 * relative to the current position.
4954 void term_scroll(Terminal
*term
, int rel
, int where
)
4956 int sbtop
= -sblines(term
);
4957 #ifdef OPTIMISE_SCROLL
4958 int olddisptop
= term
->disptop
;
4960 #endif /* OPTIMISE_SCROLL */
4962 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
4963 if (term
->disptop
< sbtop
)
4964 term
->disptop
= sbtop
;
4965 if (term
->disptop
> 0)
4968 #ifdef OPTIMISE_SCROLL
4969 shift
= (term
->disptop
- olddisptop
);
4970 if (shift
< term
->rows
&& shift
> -term
->rows
)
4971 scroll_display(term
, 0, term
->rows
- 1, shift
);
4972 #endif /* OPTIMISE_SCROLL */
4976 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
4979 wchar_t *wbptr
; /* where next char goes within workbuf */
4981 int wblen
= 0; /* workbuf len */
4982 int buflen
; /* amount of memory allocated to workbuf */
4984 buflen
= 5120; /* Default size */
4985 workbuf
= snewn(buflen
, wchar_t);
4986 wbptr
= workbuf
; /* start filling here */
4987 old_top_x
= top
.x
; /* needed for rect==1 */
4989 while (poslt(top
, bottom
)) {
4991 termline
*ldata
= lineptr(top
.y
);
4995 * nlpos will point at the maximum position on this line we
4996 * should copy up to. So we start it at the end of the
5000 nlpos
.x
= term
->cols
;
5003 * ... move it backwards if there's unused space at the end
5004 * of the line (and also set `nl' if this is the case,
5005 * because in normal selection mode this means we need a
5006 * newline at the end)...
5008 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5009 while (IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
5010 !ldata
->chars
[nlpos
.x
- 1].cc_next
&&
5013 if (poslt(nlpos
, bottom
))
5015 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
5016 /* Ignore the last char on the line in a WRAPPED2 line. */
5021 * ... and then clip it to the terminal x coordinate if
5022 * we're doing rectangular selection. (In this case we
5023 * still did the above, so that copying e.g. the right-hand
5024 * column from a table doesn't fill with spaces on the
5028 if (nlpos
.x
> bottom
.x
)
5030 nl
= (top
.y
< bottom
.y
);
5033 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
5036 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
5038 wchar_t cbuf
[16], *p
;
5042 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
5048 int uc
= ldata
->chars
[x
].chr
;
5050 switch (uc
& CSET_MASK
) {
5052 if (!term
->cfg
.rawcnp
) {
5053 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5057 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5060 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5063 switch (uc
& CSET_MASK
) {
5065 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5068 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5072 set
= (uc
& CSET_MASK
);
5073 c
= (uc
& ~CSET_MASK
);
5077 if (DIRECT_FONT(uc
)) {
5078 if (c
>= ' ' && c
!= 0x7F) {
5082 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
5084 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
5085 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
5089 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
5093 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
5100 for (p
= cbuf
; *p
; p
++) {
5101 /* Enough overhead for trailing NL and nul */
5102 if (wblen
>= buflen
- 16) {
5104 workbuf
= sresize(workbuf
, buflen
, wchar_t);
5105 wbptr
= workbuf
+ wblen
;
5111 if (ldata
->chars
[x
].cc_next
)
5112 x
+= ldata
->chars
[x
].cc_next
;
5120 for (i
= 0; i
< sel_nl_sz
; i
++) {
5122 *wbptr
++ = sel_nl
[i
];
5126 top
.x
= rect ? old_top_x
: 0;
5130 #if SELECTION_NUL_TERMINATED
5134 write_clip(term
->frontend
, workbuf
, wblen
, desel
); /* transfer to clipbd */
5135 if (buflen
> 0) /* indicates we allocated this buffer */
5139 void term_copyall(Terminal
*term
)
5143 tree234
*screen
= term
->screen
;
5144 top
.y
= -sblines(term
);
5146 bottom
.y
= find_last_nonempty_line(term
, screen
);
5147 bottom
.x
= term
->cols
;
5148 clipme(term
, top
, bottom
, 0, TRUE
);
5152 * The wordness array is mainly for deciding the disposition of the
5153 * US-ASCII characters.
5155 static int wordtype(Terminal
*term
, int uc
)
5158 int start
, end
, ctype
;
5160 static const struct ucsword ucs_words
[] = {
5166 0x037e, 0x037e, 1}, /* Greek question mark */
5168 0x0387, 0x0387, 1}, /* Greek ano teleia */
5170 0x055a, 0x055f, 1}, /* Armenian punctuation */
5172 0x0589, 0x0589, 1}, /* Armenian full stop */
5174 0x0700, 0x070d, 1}, /* Syriac punctuation */
5176 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5178 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5180 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5182 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5184 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5186 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5188 0x2000, 0x200a, 0}, /* Various spaces */
5190 0x2070, 0x207f, 2}, /* superscript */
5192 0x2080, 0x208f, 2}, /* subscript */
5194 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5196 0x3000, 0x3000, 0}, /* ideographic space */
5198 0x3001, 0x3020, 1}, /* ideographic punctuation */
5200 0x303f, 0x309f, 3}, /* Hiragana */
5202 0x30a0, 0x30ff, 3}, /* Katakana */
5204 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5206 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5208 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5210 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5212 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5214 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5216 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5218 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5220 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5224 const struct ucsword
*wptr
;
5226 switch (uc
& CSET_MASK
) {
5228 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5231 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5234 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5237 switch (uc
& CSET_MASK
) {
5239 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5242 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5246 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5247 * fail as there's such a thing as a double width space. :-(
5249 if (term
->ucsdata
->dbcs_screenfont
&&
5250 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
5254 return term
->wordness
[uc
];
5256 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
5257 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
5265 * Spread the selection outwards according to the selection mode.
5267 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
5271 int topy
= -sblines(term
);
5273 ldata
= lineptr(p
.y
);
5275 switch (term
->selmode
) {
5278 * In this mode, every character is a separate unit, except
5279 * for runs of spaces at the end of a non-wrapping line.
5281 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5282 termchar
*q
= ldata
->chars
+ term
->cols
;
5283 while (q
> ldata
->chars
&&
5284 IS_SPACE_CHR(q
[-1].chr
) && !q
[-1].cc_next
)
5286 if (q
== ldata
->chars
+ term
->cols
)
5288 if (p
.x
>= q
- ldata
->chars
)
5289 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
5294 * In this mode, the units are maximal runs of characters
5295 * whose `wordness' has the same value.
5297 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
5300 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
5301 term
->cols
-1 : term
->cols
);
5302 if (p
.x
< maxcols
-1) {
5303 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
5308 if (ldata
->lattr
& LATTR_WRAPPED
) {
5310 ldata2
= lineptr(p
.y
+1);
5311 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
5328 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
5337 ldata2
= lineptr(p
.y
-1);
5338 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
5339 term
->cols
-1 : term
->cols
);
5340 if (ldata2
->lattr
& LATTR_WRAPPED
) {
5341 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
5359 * In this mode, every line is a unit.
5361 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
5369 static void sel_spread(Terminal
*term
)
5371 if (term
->seltype
== LEXICOGRAPHIC
) {
5372 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
5373 decpos(term
->selend
);
5374 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
5375 incpos(term
->selend
);
5379 void term_do_paste(Terminal
*term
)
5384 get_clip(term
->frontend
, &data
, &len
);
5385 if (data
&& len
> 0) {
5388 term_seen_key_event(term
); /* pasted data counts */
5390 if (term
->paste_buffer
)
5391 sfree(term
->paste_buffer
);
5392 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5393 term
->paste_buffer
= snewn(len
, wchar_t);
5396 while (p
< data
+ len
) {
5397 while (p
< data
+ len
&&
5398 !(p
<= data
+ len
- sel_nl_sz
&&
5399 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
5404 for (i
= 0; i
< p
- q
; i
++) {
5405 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
5409 if (p
<= data
+ len
- sel_nl_sz
&&
5410 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
5411 term
->paste_buffer
[term
->paste_len
++] = '\015';
5417 /* Assume a small paste will be OK in one go. */
5418 if (term
->paste_len
< 256) {
5420 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
5421 if (term
->paste_buffer
)
5422 sfree(term
->paste_buffer
);
5423 term
->paste_buffer
= 0;
5424 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5427 get_clip(term
->frontend
, NULL
, NULL
);
5430 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
5431 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
5435 int raw_mouse
= (term
->xterm_mouse
&&
5436 !term
->cfg
.no_mouse_rep
&&
5437 !(term
->cfg
.mouse_override
&& shift
));
5438 int default_seltype
;
5442 if (a
== MA_DRAG
&& !raw_mouse
)
5443 term_scroll(term
, 0, -1);
5445 if (y
>= term
->rows
) {
5447 if (a
== MA_DRAG
&& !raw_mouse
)
5448 term_scroll(term
, 0, +1);
5457 if (x
>= term
->cols
)
5460 selpoint
.y
= y
+ term
->disptop
;
5461 ldata
= lineptr(selpoint
.y
);
5463 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
5467 * Transform x through the bidi algorithm to find the _logical_
5468 * click point from the physical one.
5470 if (term_bidi_line(term
, ldata
, y
) != NULL
) {
5471 x
= term
->post_bidi_cache
[y
].backward
[x
];
5478 int encstate
= 0, r
, c
;
5485 encstate
= 0x20; /* left button down */
5496 case MBT_WHEEL_DOWN
:
5499 default: break; /* placate gcc warning about enum use */
5503 if (term
->xterm_mouse
== 1)
5509 term
->mouse_is_down
= 0;
5512 if (term
->mouse_is_down
== braw
)
5514 term
->mouse_is_down
= braw
;
5516 default: break; /* placate gcc warning about enum use */
5525 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
5526 ldisc_send(term
->ldisc
, abuf
, 6, 0);
5532 * Set the selection type (rectangular or normal) at the start
5533 * of a selection attempt, from the state of Alt.
5535 if (!alt
^ !term
->cfg
.rect_select
)
5536 default_seltype
= RECTANGULAR
;
5538 default_seltype
= LEXICOGRAPHIC
;
5540 if (term
->selstate
== NO_SELECTION
) {
5541 term
->seltype
= default_seltype
;
5544 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
5546 term
->selstate
= ABOUT_TO
;
5547 term
->seltype
= default_seltype
;
5548 term
->selanchor
= selpoint
;
5549 term
->selmode
= SM_CHAR
;
5550 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
5552 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
5553 term
->selstate
= DRAGGING
;
5554 term
->selstart
= term
->selanchor
= selpoint
;
5555 term
->selend
= term
->selstart
;
5556 incpos(term
->selend
);
5558 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
5559 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
5560 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
5562 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
5563 term
->selstate
== SELECTED
) {
5564 if (term
->seltype
== LEXICOGRAPHIC
) {
5566 * For normal selection, we extend by moving
5567 * whichever end of the current selection is closer
5570 if (posdiff(selpoint
, term
->selstart
) <
5571 posdiff(term
->selend
, term
->selstart
) / 2) {
5572 term
->selanchor
= term
->selend
;
5573 decpos(term
->selanchor
);
5575 term
->selanchor
= term
->selstart
;
5579 * For rectangular selection, we have a choice of
5580 * _four_ places to put selanchor and selpoint: the
5581 * four corners of the selection.
5583 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
5584 term
->selanchor
.x
= term
->selend
.x
-1;
5586 term
->selanchor
.x
= term
->selstart
.x
;
5588 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
5589 term
->selanchor
.y
= term
->selend
.y
;
5591 term
->selanchor
.y
= term
->selstart
.y
;
5593 term
->selstate
= DRAGGING
;
5595 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
5596 term
->selanchor
= selpoint
;
5597 term
->selstate
= DRAGGING
;
5598 if (term
->seltype
== LEXICOGRAPHIC
) {
5600 * For normal selection, we set (selstart,selend) to
5601 * (selpoint,selanchor) in some order.
5603 if (poslt(selpoint
, term
->selanchor
)) {
5604 term
->selstart
= selpoint
;
5605 term
->selend
= term
->selanchor
;
5606 incpos(term
->selend
);
5608 term
->selstart
= term
->selanchor
;
5609 term
->selend
= selpoint
;
5610 incpos(term
->selend
);
5614 * For rectangular selection, we may need to
5615 * interchange x and y coordinates (if the user has
5616 * dragged in the -x and +y directions, or vice versa).
5618 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
5619 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
5620 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
5621 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
5624 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
5626 if (term
->selstate
== DRAGGING
) {
5628 * We've completed a selection. We now transfer the
5629 * data to the clipboard.
5631 clipme(term
, term
->selstart
, term
->selend
,
5632 (term
->seltype
== RECTANGULAR
), FALSE
);
5633 term
->selstate
= SELECTED
;
5635 term
->selstate
= NO_SELECTION
;
5636 } else if (bcooked
== MBT_PASTE
5638 #if MULTICLICK_ONLY_EVENT
5639 || a
== MA_2CLK
|| a
== MA_3CLK
5642 request_paste(term
->frontend
);
5648 void term_key(Terminal
*term
, Key_Sym keysym
, wchar_t *text
, size_t tlen
,
5649 unsigned int modifiers
, unsigned int flags
)
5653 int prependesc
= FALSE
;
5657 fprintf(stderr
, "keysym = %d, %d chars:", keysym
, tlen
);
5658 for (i
= 0; i
< tlen
; i
++)
5659 fprintf(stderr
, " %04x", (unsigned)text
[i
]);
5660 fprintf(stderr
, "\n");
5664 if ((flags
& PKF_REPEAT
) && term
->repeat_off
)
5667 /* Currently, Meta always just prefixes everything with ESC. */
5668 if (modifiers
& PKM_META
)
5670 modifiers
&= ~PKM_META
;
5673 * Alt is only used for Alt+keypad, which isn't supported yet, so
5676 modifiers
&= ~PKM_ALT
;
5678 /* Standard local function keys */
5679 switch (modifiers
& (PKM_SHIFT
| PKM_CONTROL
)) {
5681 if (keysym
== PK_PAGEUP
)
5682 /* scroll up one page */;
5683 if (keysym
== PK_PAGEDOWN
)
5684 /* scroll down on page */;
5685 if (keysym
== PK_INSERT
)
5686 term_do_paste(term
);
5689 if (keysym
== PK_PAGEUP
)
5690 /* scroll up one line */;
5691 if (keysym
== PK_PAGEDOWN
)
5692 /* scroll down one line */;
5693 /* Control-Numlock for app-keypad mode switch */
5694 if (keysym
== PK_PF1
)
5695 term
->app_keypad_keys
^= 1;
5699 if (modifiers
& PKM_ALT
) {
5700 /* Alt+F4 (close) */
5701 /* Alt+Return (full screen) */
5702 /* Alt+Space (system menu) */
5705 if (keysym
== PK_NULL
&& (modifiers
& PKM_CONTROL
) && tlen
== 1 &&
5706 text
[0] >= 0x20 && text
[0] <= 0x7e) {
5707 /* ASCII chars + Control */
5708 if ((text
[0] >= 0x40 && text
[0] <= 0x5f) ||
5709 (text
[0] >= 0x61 && text
[0] <= 0x7a))
5713 * Control-2 should return ^@ (0x00), Control-6 should return
5714 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5715 * the DOS keyboard handling did it, and we have nothing better
5716 * to do with the key combo in question, we'll also map
5717 * Control-Backquote to ^\ (0x1C).
5720 case ' ': text
[0] = 0x00; break;
5721 case '-': text
[0] = 0x1f; break;
5722 case '/': text
[0] = 0x1f; break;
5723 case '2': text
[0] = 0x00; break;
5724 case '3': text
[0] = 0x1b; break;
5725 case '4': text
[0] = 0x1c; break;
5726 case '5': text
[0] = 0x1d; break;
5727 case '6': text
[0] = 0x1e; break;
5728 case '7': text
[0] = 0x1f; break;
5729 case '8': text
[0] = 0x7f; break;
5730 case '`': text
[0] = 0x1c; break;
5735 /* Nethack keypad */
5736 if (term
->cfg
.nethack_keypad
) {
5739 case PK_KP1
: c
= 'b'; break;
5740 case PK_KP2
: c
= 'j'; break;
5741 case PK_KP3
: c
= 'n'; break;
5742 case PK_KP4
: c
= 'h'; break;
5743 case PK_KP5
: c
= '.'; break;
5744 case PK_KP6
: c
= 'l'; break;
5745 case PK_KP7
: c
= 'y'; break;
5746 case PK_KP8
: c
= 'k'; break;
5747 case PK_KP9
: c
= 'u'; break;
5748 default: break; /* else gcc warns `enum value not used' */
5752 if (modifiers
& PKM_CONTROL
)
5754 else if (modifiers
& PKM_SHIFT
)
5762 /* Numeric Keypad */
5763 if (PK_ISKEYPAD(keysym
)) {
5767 * In VT400 mode, PFn always emits an escape sequence. In
5768 * Linux and tilde modes, this only happens in app keypad mode.
5770 if (term
->cfg
.funky_type
== FUNKY_VT400
||
5771 ((term
->cfg
.funky_type
== FUNKY_LINUX
||
5772 term
->cfg
.funky_type
== FUNKY_TILDE
) &&
5773 term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
)) {
5775 case PK_PF1
: xkey
= 'P'; break;
5776 case PK_PF2
: xkey
= 'Q'; break;
5777 case PK_PF3
: xkey
= 'R'; break;
5778 case PK_PF4
: xkey
= 'S'; break;
5779 default: break; /* else gcc warns `enum value not used' */
5782 if (term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
) {
5784 case PK_KP0
: xkey
= 'p'; break;
5785 case PK_KP1
: xkey
= 'q'; break;
5786 case PK_KP2
: xkey
= 'r'; break;
5787 case PK_KP3
: xkey
= 's'; break;
5788 case PK_KP4
: xkey
= 't'; break;
5789 case PK_KP5
: xkey
= 'u'; break;
5790 case PK_KP6
: xkey
= 'v'; break;
5791 case PK_KP7
: xkey
= 'w'; break;
5792 case PK_KP8
: xkey
= 'x'; break;
5793 case PK_KP9
: xkey
= 'y'; break;
5794 case PK_KPDECIMAL
: xkey
= 'n'; break;
5795 case PK_KPENTER
: xkey
= 'M'; break;
5796 default: break; /* else gcc warns `enum value not used' */
5798 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& tlen
> 0) {
5800 * xterm can't see the layout of the keypad, so it has
5801 * to rely on the X keysyms returned by the keys.
5802 * Hence, we look at the strings here, not the PuTTY
5803 * keysyms (which describe the layout).
5807 if (modifiers
& PKM_SHIFT
)
5812 case '/': xkey
= 'o'; break;
5813 case '*': xkey
= 'j'; break;
5814 case '-': xkey
= 'm'; break;
5818 * In all other modes, we try to retain the layout of
5819 * the DEC keypad in application mode.
5823 /* This key covers the '-' and ',' keys on a VT220 */
5824 if (modifiers
& PKM_SHIFT
)
5825 xkey
= 'm'; /* VT220 '-' */
5827 xkey
= 'l'; /* VT220 ',' */
5829 case PK_KPMINUS
: xkey
= 'm'; break;
5830 case PK_KPCOMMA
: xkey
= 'l'; break;
5831 default: break; /* else gcc warns `enum value not used' */
5836 if (term
->vt52_mode
) {
5837 if (xkey
>= 'P' && xkey
<= 'S')
5838 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5840 p
+= sprintf((char *) p
, "\x1B?%c", xkey
);
5842 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5845 /* Not in application mode -- treat the number pad as arrow keys? */
5846 if ((flags
& PKF_NUMLOCK
) == 0) {
5848 case PK_KP0
: keysym
= PK_INSERT
; break;
5849 case PK_KP1
: keysym
= PK_END
; break;
5850 case PK_KP2
: keysym
= PK_DOWN
; break;
5851 case PK_KP3
: keysym
= PK_PAGEDOWN
; break;
5852 case PK_KP4
: keysym
= PK_LEFT
; break;
5853 case PK_KP5
: keysym
= PK_REST
; break;
5854 case PK_KP6
: keysym
= PK_RIGHT
; break;
5855 case PK_KP7
: keysym
= PK_HOME
; break;
5856 case PK_KP8
: keysym
= PK_UP
; break;
5857 case PK_KP9
: keysym
= PK_PAGEUP
; break;
5858 default: break; /* else gcc warns `enum value not used' */
5863 /* Miscellaneous keys */
5870 *p
++ = (term
->cfg
.bksp_is_delete ?
0x7F : 0x08);
5871 else if (modifiers
== PKM_SHIFT
)
5872 /* We do the opposite of what is configured */
5873 *p
++ = (term
->cfg
.bksp_is_delete ?
0x08 : 0x7F);
5879 else if (modifiers
== PKM_SHIFT
)
5880 *p
++ = 0x1B, *p
++ = '[', *p
++ = 'Z';
5883 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5885 if (modifiers
== PKM_CONTROL
)
5890 case PK_KPENTER
: /* Odd keypad modes handled above */
5891 if (modifiers
== 0) {
5893 if (term
->cr_lf_return
)
5897 default: break; /* else gcc warns `enum value not used' */
5900 /* SCO function keys and editing keys */
5901 if (term
->cfg
.funky_type
== FUNKY_SCO
) {
5902 if (PK_ISFKEY(keysym
) && keysym
<= PK_F12
) {
5903 static char const codes
[] =
5904 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5905 int index
= keysym
- PK_F1
;
5907 if (modifiers
& PKM_SHIFT
) index
+= 12;
5908 if (modifiers
& PKM_CONTROL
) index
+= 24;
5909 p
+= sprintf((char *) p
, "\x1B[%c", codes
[index
]);
5912 if (PK_ISEDITING(keysym
)) {
5916 case PK_DELETE
: *p
++ = 0x7f; goto done
;
5917 case PK_HOME
: xkey
= 'H'; break;
5918 case PK_INSERT
: xkey
= 'L'; break;
5919 case PK_END
: xkey
= 'F'; break;
5920 case PK_PAGEUP
: xkey
= 'I'; break;
5921 case PK_PAGEDOWN
: xkey
= 'G'; break;
5922 default: break; /* else gcc warns `enum value not used' */
5924 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
5928 if (PK_ISEDITING(keysym
) && (modifiers
& PKM_SHIFT
) == 0) {
5931 if (term
->cfg
.funky_type
== FUNKY_XTERM
) {
5932 /* Xterm shuffles these keys, apparently. */
5934 case PK_HOME
: keysym
= PK_INSERT
; break;
5935 case PK_INSERT
: keysym
= PK_HOME
; break;
5936 case PK_DELETE
: keysym
= PK_END
; break;
5937 case PK_END
: keysym
= PK_PAGEUP
; break;
5938 case PK_PAGEUP
: keysym
= PK_DELETE
; break;
5939 case PK_PAGEDOWN
: keysym
= PK_PAGEDOWN
; break;
5940 default: break; /* else gcc warns `enum value not used' */
5945 if (term
->cfg
.rxvt_homeend
&&
5946 (keysym
== PK_HOME
|| keysym
== PK_END
)) {
5947 p
+= sprintf((char *) p
, keysym
== PK_HOME ?
"\x1B[H" : "\x1BOw");
5951 if (term
->vt52_mode
) {
5955 * A real VT52 doesn't have these, and a VT220 doesn't
5956 * send anything for them in VT52 mode.
5959 case PK_HOME
: xkey
= 'H'; break;
5960 case PK_INSERT
: xkey
= 'L'; break;
5961 case PK_DELETE
: xkey
= 'M'; break;
5962 case PK_END
: xkey
= 'E'; break;
5963 case PK_PAGEUP
: xkey
= 'I'; break;
5964 case PK_PAGEDOWN
: xkey
= 'G'; break;
5965 default: xkey
=0; break; /* else gcc warns `enum value not used'*/
5967 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5972 case PK_HOME
: code
= 1; break;
5973 case PK_INSERT
: code
= 2; break;
5974 case PK_DELETE
: code
= 3; break;
5975 case PK_END
: code
= 4; break;
5976 case PK_PAGEUP
: code
= 5; break;
5977 case PK_PAGEDOWN
: code
= 6; break;
5978 default: code
= 0; break; /* else gcc warns `enum value not used' */
5980 p
+= sprintf((char *) p
, "\x1B[%d~", code
);
5984 if (PK_ISFKEY(keysym
)) {
5985 /* Map Shift+F1-F10 to F11-F20 */
5986 if (keysym
>= PK_F1
&& keysym
<= PK_F10
&& (modifiers
& PKM_SHIFT
))
5988 if ((term
->vt52_mode
|| term
->cfg
.funky_type
== FUNKY_VT100P
) &&
5990 /* XXX This overrides the XTERM/VT52 mode below */
5992 if (keysym
>= PK_F6
) offt
++;
5993 if (keysym
>= PK_F12
) offt
++;
5994 p
+= sprintf((char *) p
, term
->vt52_mode ?
"\x1B%c" : "\x1BO%c",
5995 'P' + keysym
- PK_F1
- offt
);
5998 if (term
->cfg
.funky_type
== FUNKY_LINUX
&& keysym
<= PK_F5
) {
5999 p
+= sprintf((char *) p
, "\x1B[[%c", 'A' + keysym
- PK_F1
);
6002 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& keysym
<= PK_F4
) {
6003 if (term
->vt52_mode
)
6004 p
+= sprintf((char *) p
, "\x1B%c", 'P' + keysym
- PK_F1
);
6006 p
+= sprintf((char *) p
, "\x1BO%c", 'P' + keysym
- PK_F1
);
6009 p
+= sprintf((char *) p
, "\x1B[%d~", 11 + keysym
- PK_F1
);
6013 if (PK_ISCURSOR(keysym
)) {
6017 case PK_UP
: xkey
= 'A'; break;
6018 case PK_DOWN
: xkey
= 'B'; break;
6019 case PK_RIGHT
: xkey
= 'C'; break;
6020 case PK_LEFT
: xkey
= 'D'; break;
6021 case PK_REST
: xkey
= 'G'; break; /* centre key on number pad */
6022 default: xkey
= 0; break; /* else gcc warns `enum value not used' */
6024 if (term
->vt52_mode
)
6025 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6027 int app_flg
= (term
->app_cursor_keys
&& !term
->cfg
.no_applic_c
);
6029 /* Useful mapping of Ctrl-arrows */
6030 if (modifiers
== PKM_CONTROL
)
6034 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
6036 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6042 if (p
> output
|| tlen
> 0) {
6044 * Interrupt an ongoing paste. I'm not sure
6045 * this is sensible, but for the moment it's
6046 * preferable to having to faff about buffering
6052 * We need not bother about stdin backlogs
6053 * here, because in GUI PuTTY we can't do
6054 * anything about it anyway; there's no means
6055 * of asking Windows to hold off on KEYDOWN
6056 * messages. We _have_ to buffer everything
6059 term_seen_key_event(term
);
6063 fprintf(stderr
, "sending ESC\n");
6065 ldisc_send(term
->ldisc
, "\x1b", 1, 1);
6070 fprintf(stderr
, "sending %d bytes:", p
- output
);
6071 for (i
= 0; i
< p
- output
; i
++)
6072 fprintf(stderr
, " %02x", output
[i
]);
6073 fprintf(stderr
, "\n");
6075 ldisc_send(term
->ldisc
, output
, p
- output
, 1);
6076 } else if (tlen
> 0) {
6078 fprintf(stderr
, "sending %d unichars:", tlen
);
6079 for (i
= 0; i
< tlen
; i
++)
6080 fprintf(stderr
, " %04x", (unsigned) text
[i
]);
6081 fprintf(stderr
, "\n");
6083 luni_send(term
->ldisc
, text
, tlen
, 1);
6088 void term_nopaste(Terminal
*term
)
6090 if (term
->paste_len
== 0)
6092 sfree(term
->paste_buffer
);
6093 term
->paste_buffer
= NULL
;
6094 term
->paste_len
= 0;
6097 int term_paste_pending(Terminal
*term
)
6099 return term
->paste_len
!= 0;
6102 void term_paste(Terminal
*term
)
6104 long now
, paste_diff
;
6106 if (term
->paste_len
== 0)
6109 /* Don't wait forever to paste */
6110 if (term
->paste_hold
) {
6111 now
= GETTICKCOUNT();
6112 paste_diff
= now
- term
->last_paste
;
6113 if (paste_diff
>= 0 && paste_diff
< 450)
6116 term
->paste_hold
= 0;
6118 while (term
->paste_pos
< term
->paste_len
) {
6120 while (n
+ term
->paste_pos
< term
->paste_len
) {
6121 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
6125 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
6126 term
->paste_pos
+= n
;
6128 if (term
->paste_pos
< term
->paste_len
) {
6129 term
->paste_hold
= 1;
6133 sfree(term
->paste_buffer
);
6134 term
->paste_buffer
= NULL
;
6135 term
->paste_len
= 0;
6138 static void deselect(Terminal
*term
)
6140 term
->selstate
= NO_SELECTION
;
6141 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
6144 void term_deselect(Terminal
*term
)
6150 int term_ldisc(Terminal
*term
, int option
)
6152 if (option
== LD_ECHO
)
6153 return term
->term_echoing
;
6154 if (option
== LD_EDIT
)
6155 return term
->term_editing
;
6159 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
6161 bufchain_add(&term
->inbuf
, data
, len
);
6163 if (!term
->in_term_out
) {
6164 term
->in_term_out
= TRUE
;
6165 term_reset_cblink(term
);
6167 * During drag-selects, we do not process terminal input,
6168 * because the user will want the screen to hold still to
6171 if (term
->selstate
!= DRAGGING
)
6173 term
->in_term_out
= FALSE
;
6177 * term_out() always completely empties inbuf. Therefore,
6178 * there's no reason at all to return anything other than zero
6179 * from this function, because there _can't_ be a question of
6180 * the remote side needing to wait until term_out() has cleared
6183 * This is a slightly suboptimal way to deal with SSH2 - in
6184 * principle, the window mechanism would allow us to continue
6185 * to accept data on forwarded ports and X connections even
6186 * while the terminal processing was going slowly - but we
6187 * can't do the 100% right thing without moving the terminal
6188 * processing into a separate thread, and that might hurt
6189 * portability. So we manage stdout buffering the old SSH1 way:
6190 * if the terminal processing goes slowly, the whole SSH
6191 * connection stops accepting data until it's ready.
6193 * In practice, I can't imagine this causing serious trouble.
6198 void term_provide_logctx(Terminal
*term
, void *logctx
)
6200 term
->logctx
= logctx
;
6203 void term_set_focus(Terminal
*term
, int has_focus
)
6205 term
->has_focus
= has_focus
;
6206 term_schedule_cblink(term
);