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
)
138 * Diagnostic function: verify that a termline has a correct
139 * combining character structure.
141 * This is a performance-intensive check, so it's no longer enabled
144 static void cc_check(termline
*line
)
146 unsigned char *flags
;
149 assert(line
->size
>= line
->cols
);
151 flags
= snewn(line
->size
, unsigned char);
153 for (i
= 0; i
< line
->size
; i
++)
154 flags
[i
] = (i
< line
->cols
);
156 for (i
= 0; i
< line
->cols
; i
++) {
158 while (line
->chars
[j
].cc_next
) {
159 j
+= line
->chars
[j
].cc_next
;
160 assert(j
>= line
->cols
&& j
< line
->size
);
169 assert(j
>= line
->cols
&& j
< line
->size
);
172 if (line
->chars
[j
].cc_next
)
173 j
+= line
->chars
[j
].cc_next
;
180 for (i
= 0; i
< line
->size
; i
++)
181 j
+= (flags
[i
] != 0);
183 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
;
240 * Clear the combining character list in a character cell.
242 static void clear_cc(termline
*line
, int col
)
244 int oldfree
, origcol
= col
;
246 assert(col
>= 0 && col
< line
->cols
);
248 if (!line
->chars
[col
].cc_next
)
249 return; /* nothing needs doing */
251 oldfree
= line
->cc_free
;
252 line
->cc_free
= col
+ line
->chars
[col
].cc_next
;
253 while (line
->chars
[col
].cc_next
)
254 col
+= line
->chars
[col
].cc_next
;
256 line
->chars
[col
].cc_next
= oldfree
- col
;
258 line
->chars
[col
].cc_next
= 0;
260 line
->chars
[origcol
].cc_next
= 0;
268 * Compare two character cells for equality. Special case required
269 * in do_paint() where we override what we expect the chr and attr
272 static int termchars_equal_override(termchar
*a
, termchar
*b
,
273 unsigned long bchr
, unsigned long battr
)
278 if ((a
->attr
&~ DATTR_MASK
) != (battr
&~ DATTR_MASK
))
280 while (a
->cc_next
|| b
->cc_next
) {
281 if (!a
->cc_next
|| !b
->cc_next
)
282 return FALSE
; /* one cc-list ends, other does not */
285 if (a
->chr
!= b
->chr
)
291 static int termchars_equal(termchar
*a
, termchar
*b
)
293 return termchars_equal_override(a
, b
, b
->chr
, b
->attr
);
297 * Copy a character cell. (Requires a pointer to the destination
298 * termline, so as to access its free list.)
300 static void copy_termchar(termline
*destline
, int x
, termchar
*src
)
302 clear_cc(destline
, x
);
304 destline
->chars
[x
] = *src
; /* copy everything except cc-list */
305 destline
->chars
[x
].cc_next
= 0; /* and make sure this is zero */
307 while (src
->cc_next
) {
309 add_cc(destline
, x
, src
->chr
);
318 * Move a character cell within its termline.
320 static void move_termchar(termline
*line
, termchar
*dest
, termchar
*src
)
322 /* First clear the cc list from the original char, just in case. */
323 clear_cc(line
, dest
- line
->chars
);
325 /* Move the character cell and adjust its cc_next. */
326 *dest
= *src
; /* copy everything except cc-list */
328 dest
->cc_next
= src
->cc_next
- (dest
-src
);
330 /* Ensure the original cell doesn't have a cc list. */
339 * Compress and decompress a termline into an RLE-based format for
340 * storing in scrollback. (Since scrollback almost never needs to
341 * be modified and exists in huge quantities, this is a sensible
342 * tradeoff, particularly since it allows us to continue adding
343 * features to the main termchar structure without proportionally
344 * bloating the terminal emulator's memory footprint unless those
345 * features are in constant use.)
351 static void add(struct buf
*b
, unsigned char c
)
353 if (b
->len
>= b
->size
) {
354 b
->size
= (b
->len
* 3 / 2) + 512;
355 b
->data
= sresize(b
->data
, b
->size
, unsigned char);
357 b
->data
[b
->len
++] = c
;
359 static int get(struct buf
*b
)
361 return b
->data
[b
->len
++];
363 static void makerle(struct buf
*b
, termline
*ldata
,
364 void (*makeliteral
)(struct buf
*b
, termchar
*c
,
365 unsigned long *state
))
367 int hdrpos
, hdrsize
, n
, prevlen
, prevpos
, thislen
, thispos
, prev2
;
368 termchar
*c
= ldata
->chars
;
369 unsigned long state
= 0, oldstate
;
376 prevlen
= prevpos
= 0;
381 makeliteral(b
, c
++, &state
);
382 thislen
= b
->len
- thispos
;
383 if (thislen
== prevlen
&&
384 !memcmp(b
->data
+ prevpos
, b
->data
+ thispos
, thislen
)) {
386 * This literal precisely matches the previous one.
387 * Turn it into a run if it's worthwhile.
389 * With one-byte literals, it costs us two bytes to
390 * encode a run, plus another byte to write the header
391 * to resume normal output; so a three-element run is
392 * neutral, and anything beyond that is unconditionally
393 * worthwhile. With two-byte literals or more, even a
396 if (thislen
> 1 || prev2
) {
400 * It's worth encoding a run. Start at prevpos,
401 * unless hdrsize==0 in which case we can back up
402 * another one and start by overwriting hdrpos.
405 hdrsize
--; /* remove the literal at prevpos */
409 prevpos
-= prevlen
;/* and possibly another one */
413 assert(prevpos
== hdrpos
+ 1);
415 b
->len
= prevpos
+prevlen
;
417 memmove(b
->data
+ prevpos
+1, b
->data
+ prevpos
, prevlen
);
419 b
->len
= prevpos
+prevlen
+1;
421 * Terminate the previous run of ordinary
424 assert(hdrsize
>= 1 && hdrsize
<= 128);
425 b
->data
[hdrpos
] = hdrsize
- 1;
428 runlen
= prev2 ?
3 : 2;
430 while (n
> 0 && runlen
< 129) {
434 makeliteral(b
, c
, &state
);
435 tmplen
= b
->len
- tmppos
;
437 if (tmplen
!= thislen
||
438 memcmp(b
->data
+ runpos
+1, b
->data
+ tmppos
, tmplen
)) {
440 break; /* run over */
445 assert(runlen
>= 2 && runlen
<= 129);
446 b
->data
[runpos
] = runlen
+ 0x80 - 2;
451 /* And ensure this run doesn't interfere with the next. */
452 prevlen
= prevpos
= 0;
458 * Just flag that the previous two literals were
459 * identical, in case we find a third identical one
460 * we want to turn into a run.
473 * This character isn't (yet) part of a run. Add it to
477 if (hdrsize
== 128) {
478 b
->data
[hdrpos
] = hdrsize
- 1;
482 prevlen
= prevpos
= 0;
491 assert(hdrsize
<= 128);
492 b
->data
[hdrpos
] = hdrsize
- 1;
497 static void makeliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
500 * My encoding for characters is UTF-8-like, in that it stores
501 * 7-bit ASCII in one byte and uses high-bit-set bytes as
502 * introducers to indicate a longer sequence. However, it's
503 * unlike UTF-8 in that it doesn't need to be able to
504 * resynchronise, and therefore I don't want to waste two bits
505 * per byte on having recognisable continuation characters.
506 * Also I don't want to rule out the possibility that I may one
507 * day use values 0x80000000-0xFFFFFFFF for interesting
508 * purposes, so unlike UTF-8 I need a full 32-bit range.
509 * Accordingly, here is my encoding:
511 * 00000000-0000007F: 0xxxxxxx (but see below)
512 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
513 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
514 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
515 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
517 * (`Z' is like `x' but is always going to be zero since the
518 * values I'm encoding don't go above 2^32. In principle the
519 * five-byte form of the encoding could extend to 2^35, and
520 * there could be six-, seven-, eight- and nine-byte forms as
521 * well to allow up to 64-bit values to be encoded. But that's
522 * completely unnecessary for these purposes!)
524 * The encoding as written above would be very simple, except
525 * that 7-bit ASCII can occur in several different ways in the
526 * terminal data; sometimes it crops up in the D800 page
527 * (CSET_ASCII) but at other times it's in the 0000 page (real
528 * Unicode). Therefore, this encoding is actually _stateful_:
529 * the one-byte encoding of 00-7F actually indicates `reuse the
530 * upper three bytes of the last character', and to encode an
531 * absolute value of 00-7F you need to use the two-byte form
534 if ((c
->chr
& ~0x7F) == *state
) {
535 add(b
, (unsigned char)(c
->chr
& 0x7F));
536 } else if (c
->chr
< 0x4000) {
537 add(b
, (unsigned char)(((c
->chr
>> 8) & 0x3F) | 0x80));
538 add(b
, (unsigned char)(c
->chr
& 0xFF));
539 } else if (c
->chr
< 0x200000) {
540 add(b
, (unsigned char)(((c
->chr
>> 16) & 0x1F) | 0xC0));
541 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
542 add(b
, (unsigned char)(c
->chr
& 0xFF));
543 } else if (c
->chr
< 0x10000000) {
544 add(b
, (unsigned char)(((c
->chr
>> 24) & 0x0F) | 0xE0));
545 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
546 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
547 add(b
, (unsigned char)(c
->chr
& 0xFF));
550 add(b
, (unsigned char)((c
->chr
>> 24) & 0xFF));
551 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
552 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
553 add(b
, (unsigned char)(c
->chr
& 0xFF));
555 *state
= c
->chr
& ~0xFF;
557 static void makeliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
560 * My encoding for attributes is 16-bit-granular and assumes
561 * that the top bit of the word is never required. I either
562 * store a two-byte value with the top bit clear (indicating
563 * just that value), or a four-byte value with the top bit set
564 * (indicating the same value with its top bit clear).
566 * However, first I permute the bits of the attribute value, so
567 * that the eight bits of colour (four in each of fg and bg)
568 * which are never non-zero unless xterm 256-colour mode is in
569 * use are placed higher up the word than everything else. This
570 * ensures that attribute values remain 16-bit _unless_ the
571 * user uses extended colour.
573 unsigned attr
, colourbits
;
577 assert(ATTR_BGSHIFT
> ATTR_FGSHIFT
);
579 colourbits
= (attr
>> (ATTR_BGSHIFT
+ 4)) & 0xF;
581 colourbits
|= (attr
>> (ATTR_FGSHIFT
+ 4)) & 0xF;
583 attr
= (((attr
>> (ATTR_BGSHIFT
+ 8)) << (ATTR_BGSHIFT
+ 4)) |
584 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
585 attr
= (((attr
>> (ATTR_FGSHIFT
+ 8)) << (ATTR_FGSHIFT
+ 4)) |
586 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
588 attr
|= (colourbits
<< (32-9));
591 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
592 add(b
, (unsigned char)(attr
& 0xFF));
594 add(b
, (unsigned char)(((attr
>> 24) & 0x7F) | 0x80));
595 add(b
, (unsigned char)((attr
>> 16) & 0xFF));
596 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
597 add(b
, (unsigned char)(attr
& 0xFF));
600 static void makeliteral_cc(struct buf
*b
, termchar
*c
, unsigned long *state
)
603 * For combining characters, I just encode a bunch of ordinary
604 * chars using makeliteral_chr, and terminate with a \0
605 * character (which I know won't come up as a combining char
608 * I don't use the stateful encoding in makeliteral_chr.
610 unsigned long zstate
;
619 makeliteral_chr(b
, c
, &zstate
);
624 makeliteral_chr(b
, &z
, &zstate
);
627 static termline
*decompressline(unsigned char *data
, int *bytes_used
);
629 static unsigned char *compressline(termline
*ldata
)
631 struct buf buffer
= { NULL
, 0, 0 }, *b
= &buffer
;
634 * First, store the column count, 7 bits at a time, least
635 * significant `digit' first, with the high bit set on all but
641 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
644 add(b
, (unsigned char)(n
));
648 * Next store the lattrs; same principle.
651 int n
= ldata
->lattr
;
653 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
656 add(b
, (unsigned char)(n
));
660 * Now we store a sequence of separate run-length encoded
661 * fragments, each containing exactly as many symbols as there
662 * are columns in the ldata.
664 * All of these have a common basic format:
666 * - a byte 00-7F indicates that X+1 literals follow it
667 * - a byte 80-FF indicates that a single literal follows it
668 * and expects to be repeated (X-0x80)+2 times.
670 * The format of the `literals' varies between the fragments.
672 makerle(b
, ldata
, makeliteral_chr
);
673 makerle(b
, ldata
, makeliteral_attr
);
674 makerle(b
, ldata
, makeliteral_cc
);
677 * Diagnostics: ensure that the compressed data really does
678 * decompress to the right thing.
680 * This is a bit performance-heavy for production code.
683 #ifndef CHECK_SB_COMPRESSION
689 #ifdef DIAGNOSTIC_SB_COMPRESSION
690 for (i
= 0; i
< b
->len
; i
++) {
691 printf(" %02x ", b
->data
[i
]);
696 dcl
= decompressline(b
->data
, &dused
);
697 assert(b
->len
== dused
);
698 assert(ldata
->cols
== dcl
->cols
);
699 assert(ldata
->lattr
== dcl
->lattr
);
700 for (i
= 0; i
< ldata
->cols
; i
++)
701 assert(termchars_equal(&ldata
->chars
[i
], &dcl
->chars
[i
]));
703 #ifdef DIAGNOSTIC_SB_COMPRESSION
704 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
705 ldata
->cols
, 4 * ldata
->cols
, dused
,
706 (double)dused
/ (4 * ldata
->cols
));
712 #endif /* TERM_CC_DIAGS */
715 * Trim the allocated memory so we don't waste any, and return.
717 return sresize(b
->data
, b
->len
, unsigned char);
720 static void readrle(struct buf
*b
, termline
*ldata
,
721 void (*readliteral
)(struct buf
*b
, termchar
*c
,
722 termline
*ldata
, unsigned long *state
))
725 unsigned long state
= 0;
727 while (n
< ldata
->cols
) {
733 int pos
= b
->len
, count
= hdr
+ 2 - 0x80;
735 assert(n
< ldata
->cols
);
737 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
741 /* Just a sequence of consecutive literals. */
745 assert(n
< ldata
->cols
);
746 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
752 assert(n
== ldata
->cols
);
754 static void readliteral_chr(struct buf
*b
, termchar
*c
, termline
*ldata
,
755 unsigned long *state
)
760 * 00000000-0000007F: 0xxxxxxx
761 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
762 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
763 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
764 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
769 c
->chr
= byte
| *state
;
770 } else if (byte
< 0xC0) {
771 c
->chr
= (byte
&~ 0xC0) << 8;
773 } else if (byte
< 0xE0) {
774 c
->chr
= (byte
&~ 0xE0) << 16;
775 c
->chr
|= get(b
) << 8;
777 } else if (byte
< 0xF0) {
778 c
->chr
= (byte
&~ 0xF0) << 24;
779 c
->chr
|= get(b
) << 16;
780 c
->chr
|= get(b
) << 8;
783 assert(byte
== 0xF0);
784 c
->chr
= get(b
) << 24;
785 c
->chr
|= get(b
) << 16;
786 c
->chr
|= get(b
) << 8;
789 *state
= c
->chr
& ~0xFF;
791 static void readliteral_attr(struct buf
*b
, termchar
*c
, termline
*ldata
,
792 unsigned long *state
)
794 unsigned val
, attr
, colourbits
;
806 colourbits
= (val
>> (32-9)) & 0xFF;
807 attr
= (val
& ((1<<(32-9))-1));
809 attr
= (((attr
>> (ATTR_FGSHIFT
+ 4)) << (ATTR_FGSHIFT
+ 8)) |
810 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
811 attr
= (((attr
>> (ATTR_BGSHIFT
+ 4)) << (ATTR_BGSHIFT
+ 8)) |
812 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
814 attr
|= (colourbits
>> 4) << (ATTR_BGSHIFT
+ 4);
815 attr
|= (colourbits
& 0xF) << (ATTR_FGSHIFT
+ 4);
819 static void readliteral_cc(struct buf
*b
, termchar
*c
, termline
*ldata
,
820 unsigned long *state
)
823 unsigned long zstate
;
824 int x
= c
- ldata
->chars
;
830 readliteral_chr(b
, &n
, ldata
, &zstate
);
833 add_cc(ldata
, x
, n
.chr
);
837 static termline
*decompressline(unsigned char *data
, int *bytes_used
)
839 int ncols
, byte
, shift
;
840 struct buf buffer
, *b
= &buffer
;
847 * First read in the column count.
852 ncols
|= (byte
& 0x7F) << shift
;
854 } while (byte
& 0x80);
857 * Now create the output termline.
859 ldata
= snew(termline
);
860 ldata
->chars
= snewn(ncols
, termchar
);
861 ldata
->cols
= ldata
->size
= ncols
;
862 ldata
->temporary
= TRUE
;
866 * We must set all the cc pointers in ldata->chars to 0 right
867 * now, so that cc diagnostics that verify the integrity of the
868 * whole line will make sense while we're in the middle of
873 for (i
= 0; i
< ldata
->cols
; i
++)
874 ldata
->chars
[i
].cc_next
= 0;
878 * Now read in the lattr.
880 ldata
->lattr
= shift
= 0;
883 ldata
->lattr
|= (byte
& 0x7F) << shift
;
885 } while (byte
& 0x80);
888 * Now we read in each of the RLE streams in turn.
890 readrle(b
, ldata
, readliteral_chr
);
891 readrle(b
, ldata
, readliteral_attr
);
892 readrle(b
, ldata
, readliteral_cc
);
894 /* Return the number of bytes read, for diagnostic purposes. */
896 *bytes_used
= b
->len
;
902 * Resize a line to make it `cols' columns wide.
904 static void resizeline(Terminal
*term
, termline
*line
, int cols
)
908 if (line
->cols
!= cols
) {
910 oldcols
= line
->cols
;
913 * This line is the wrong length, which probably means it
914 * hasn't been accessed since a resize. Resize it now.
916 * First, go through all the characters that will be thrown
917 * out in the resize (if we're shrinking the line) and
918 * return their cc lists to the cc free list.
920 for (i
= cols
; i
< oldcols
; i
++)
924 * If we're shrinking the line, we now bodily move the
925 * entire cc section from where it started to where it now
926 * needs to be. (We have to do this before the resize, so
927 * that the data we're copying is still there. However, if
928 * we're expanding, we have to wait until _after_ the
929 * resize so that the space we're copying into is there.)
932 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
933 (line
->size
- line
->cols
) * TSIZE
);
936 * Now do the actual resize, leaving the _same_ amount of
937 * cc space as there was to begin with.
939 line
->size
+= cols
- oldcols
;
940 line
->chars
= sresize(line
->chars
, line
->size
, TTYPE
);
944 * If we're expanding the line, _now_ we move the cc
948 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
949 (line
->size
- line
->cols
) * TSIZE
);
952 * Go through what's left of the original line, and adjust
953 * the first cc_next pointer in each list. (All the
954 * subsequent ones are still valid because they are
955 * relative offsets within the cc block.) Also do the same
956 * to the head of the cc_free list.
958 for (i
= 0; i
< oldcols
&& i
< cols
; i
++)
959 if (line
->chars
[i
].cc_next
)
960 line
->chars
[i
].cc_next
+= cols
- oldcols
;
962 line
->cc_free
+= cols
- oldcols
;
965 * And finally fill in the new space with erase chars. (We
966 * don't have to worry about cc lists here, because we
967 * _know_ the erase char doesn't have one.)
969 for (i
= oldcols
; i
< cols
; i
++)
970 line
->chars
[i
] = term
->basic_erase_char
;
979 * Get the number of lines in the scrollback.
981 static int sblines(Terminal
*term
)
983 int sblines
= count234(term
->scrollback
);
984 if (term
->cfg
.erase_to_scrollback
&&
985 term
->alt_which
&& term
->alt_screen
) {
986 sblines
+= term
->alt_sblines
;
992 * Retrieve a line of the screen or of the scrollback, according to
993 * whether the y coordinate is non-negative or negative
996 static termline
*lineptr(Terminal
*term
, int y
, int lineno
, int screen
)
1003 whichtree
= term
->screen
;
1010 if (term
->cfg
.erase_to_scrollback
&&
1011 term
->alt_which
&& term
->alt_screen
) {
1012 altlines
= term
->alt_sblines
;
1014 if (y
< -altlines
) {
1015 whichtree
= term
->scrollback
;
1016 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
1018 whichtree
= term
->alt_screen
;
1019 treeindex
= y
+ term
->alt_sblines
;
1020 /* treeindex = y + count234(term->alt_screen); */
1023 if (whichtree
== term
->scrollback
) {
1024 unsigned char *cline
= index234(whichtree
, treeindex
);
1025 line
= decompressline(cline
, NULL
);
1027 line
= index234(whichtree
, treeindex
);
1030 /* We assume that we don't screw up and retrieve something out of range. */
1032 fatalbox("line==NULL in terminal.c\n"
1033 "lineno=%d y=%d w=%d h=%d\n"
1034 "count(scrollback=%p)=%d\n"
1035 "count(screen=%p)=%d\n"
1036 "count(alt=%p)=%d alt_sblines=%d\n"
1037 "whichtree=%p treeindex=%d\n\n"
1038 "Please contact <putty@projects.tartarus.org> "
1039 "and pass on the above information.",
1040 lineno
, y
, term
->cols
, term
->rows
,
1041 term
->scrollback
, count234(term
->scrollback
),
1042 term
->screen
, count234(term
->screen
),
1043 term
->alt_screen
, count234(term
->alt_screen
), term
->alt_sblines
,
1044 whichtree
, treeindex
);
1046 assert(line
!= NULL
);
1048 resizeline(term
, line
, term
->cols
);
1049 /* FIXME: should we sort the compressed scrollback out here? */
1054 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1055 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1057 static void term_schedule_tblink(Terminal
*term
);
1058 static void term_schedule_cblink(Terminal
*term
);
1060 static void term_timer(void *ctx
, long now
)
1062 Terminal
*term
= (Terminal
*)ctx
;
1065 if (term
->tblink_pending
&& now
- term
->next_tblink
>= 0) {
1066 term
->tblinker
= !term
->tblinker
;
1067 term
->tblink_pending
= FALSE
;
1068 term_schedule_tblink(term
);
1072 if (term
->cblink_pending
&& now
- term
->next_cblink
>= 0) {
1073 term
->cblinker
= !term
->cblinker
;
1074 term
->cblink_pending
= FALSE
;
1075 term_schedule_cblink(term
);
1079 if (term
->in_vbell
&& now
- term
->vbell_end
>= 0) {
1080 term
->in_vbell
= FALSE
;
1085 (term
->window_update_pending
&& now
- term
->next_update
>= 0))
1089 static void term_schedule_update(Terminal
*term
)
1091 if (!term
->window_update_pending
) {
1092 term
->window_update_pending
= TRUE
;
1093 term
->next_update
= schedule_timer(UPDATE_DELAY
, term_timer
, term
);
1098 * Call this whenever the terminal window state changes, to queue
1101 static void seen_disp_event(Terminal
*term
)
1103 term
->seen_disp_event
= TRUE
; /* for scrollback-reset-on-activity */
1104 term_schedule_update(term
);
1108 * Call when the terminal's blinking-text settings change, or when
1109 * a text blink has just occurred.
1111 static void term_schedule_tblink(Terminal
*term
)
1113 if (term
->blink_is_real
) {
1114 if (!term
->tblink_pending
)
1115 term
->next_tblink
= schedule_timer(TBLINK_DELAY
, term_timer
, term
);
1116 term
->tblink_pending
= TRUE
;
1118 term
->tblinker
= 1; /* reset when not in use */
1119 term
->tblink_pending
= FALSE
;
1124 * Likewise with cursor blinks.
1126 static void term_schedule_cblink(Terminal
*term
)
1128 if (term
->cfg
.blink_cur
&& term
->has_focus
) {
1129 if (!term
->cblink_pending
)
1130 term
->next_cblink
= schedule_timer(CBLINK_DELAY
, term_timer
, term
);
1131 term
->cblink_pending
= TRUE
;
1133 term
->cblinker
= 1; /* reset when not in use */
1134 term
->cblink_pending
= FALSE
;
1139 * Call to reset cursor blinking on new output.
1141 static void term_reset_cblink(Terminal
*term
)
1143 seen_disp_event(term
);
1145 term
->cblink_pending
= FALSE
;
1146 term_schedule_cblink(term
);
1150 * Call to begin a visual bell.
1152 static void term_schedule_vbell(Terminal
*term
, int already_started
,
1155 long ticks_already_gone
;
1157 if (already_started
)
1158 ticks_already_gone
= GETTICKCOUNT() - startpoint
;
1160 ticks_already_gone
= 0;
1162 if (ticks_already_gone
< VBELL_DELAY
) {
1163 term
->in_vbell
= TRUE
;
1164 term
->vbell_end
= schedule_timer(VBELL_DELAY
- ticks_already_gone
,
1167 term
->in_vbell
= FALSE
;
1172 * Set up power-on settings for the terminal.
1174 static void power_on(Terminal
*term
)
1176 term
->curs
.x
= term
->curs
.y
= 0;
1177 term
->alt_x
= term
->alt_y
= 0;
1178 term
->savecurs
.x
= term
->savecurs
.y
= 0;
1179 term
->alt_t
= term
->marg_t
= 0;
1180 if (term
->rows
!= -1)
1181 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1183 term
->alt_b
= term
->marg_b
= 0;
1184 if (term
->cols
!= -1) {
1186 for (i
= 0; i
< term
->cols
; i
++)
1187 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1189 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1190 term
->alt_ins
= term
->insert
= FALSE
;
1191 term
->alt_wnext
= term
->wrapnext
= term
->save_wnext
= FALSE
;
1192 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1193 term
->alt_cset
= term
->cset
= term
->save_cset
= 0;
1194 term
->alt_utf
= term
->utf
= term
->save_utf
= 0;
1195 term
->utf_state
= 0;
1196 term
->alt_sco_acs
= term
->sco_acs
= term
->save_sco_acs
= 0;
1197 term
->cset_attr
[0] = term
->cset_attr
[1] = term
->save_csattr
= CSET_ASCII
;
1199 term
->in_vbell
= FALSE
;
1200 term
->cursor_on
= 1;
1201 term
->big_cursor
= 0;
1202 term
->default_attr
= term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
1203 term
->term_editing
= term
->term_echoing
= FALSE
;
1204 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
1205 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
1206 term
->use_bce
= term
->cfg
.bce
;
1207 term
->blink_is_real
= term
->cfg
.blinktext
;
1208 term
->erase_char
= term
->basic_erase_char
;
1209 term
->alt_which
= 0;
1210 term_print_finish(term
);
1213 for (i
= 0; i
< 256; i
++)
1214 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1217 swap_screen(term
, 1, FALSE
, FALSE
);
1218 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1219 swap_screen(term
, 0, FALSE
, FALSE
);
1220 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1222 term_schedule_tblink(term
);
1223 term_schedule_cblink(term
);
1227 * Force a screen update.
1229 void term_update(Terminal
*term
)
1233 term
->window_update_pending
= FALSE
;
1235 ctx
= get_ctx(term
->frontend
);
1237 int need_sbar_update
= term
->seen_disp_event
;
1238 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
1239 term
->disptop
= 0; /* return to main screen */
1240 term
->seen_disp_event
= 0;
1241 need_sbar_update
= TRUE
;
1244 if (need_sbar_update
)
1246 do_paint(term
, ctx
, TRUE
);
1247 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
1253 * Called from front end when a keypress occurs, to trigger
1254 * anything magical that needs to happen in that situation.
1256 void term_seen_key_event(Terminal
*term
)
1259 * On any keypress, clear the bell overload mechanism
1260 * completely, on the grounds that large numbers of
1261 * beeps coming from deliberate key action are likely
1262 * to be intended (e.g. beeps from filename completion
1263 * blocking repeatedly).
1265 term
->beep_overloaded
= FALSE
;
1266 while (term
->beephead
) {
1267 struct beeptime
*tmp
= term
->beephead
;
1268 term
->beephead
= tmp
->next
;
1271 term
->beeptail
= NULL
;
1275 * Reset the scrollback on keypress, if we're doing that.
1277 if (term
->cfg
.scroll_on_key
) {
1278 term
->disptop
= 0; /* return to main screen */
1279 seen_disp_event(term
);
1284 * Same as power_on(), but an external function.
1286 void term_pwron(Terminal
*term
)
1289 if (term
->ldisc
) /* cause ldisc to notice changes */
1290 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1296 static void set_erase_char(Terminal
*term
)
1298 term
->erase_char
= term
->basic_erase_char
;
1300 term
->erase_char
.attr
= (term
->curr_attr
&
1301 (ATTR_FGMASK
| ATTR_BGMASK
));
1305 * When the user reconfigures us, we need to check the forbidden-
1306 * alternate-screen config option, disable raw mouse mode if the
1307 * user has disabled mouse reporting, and abandon a print job if
1308 * the user has disabled printing.
1310 void term_reconfig(Terminal
*term
, Config
*cfg
)
1313 * Before adopting the new config, check all those terminal
1314 * settings which control power-on defaults; and if they've
1315 * changed, we will modify the current state as well as the
1316 * default one. The full list is: Auto wrap mode, DEC Origin
1317 * Mode, BCE, blinking text, character classes.
1319 int reset_wrap
, reset_decom
, reset_bce
, reset_tblink
, reset_charclass
;
1322 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
1323 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
1324 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
1325 reset_tblink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
1326 reset_charclass
= 0;
1327 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
1328 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
1329 reset_charclass
= 1;
1332 * If the bidi or shaping settings have changed, flush the bidi
1335 if (term
->cfg
.arabicshaping
!= cfg
->arabicshaping
||
1336 term
->cfg
.bidi
!= cfg
->bidi
) {
1337 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1338 sfree(term
->pre_bidi_cache
[i
].chars
);
1339 sfree(term
->post_bidi_cache
[i
].chars
);
1340 term
->pre_bidi_cache
[i
].width
= -1;
1341 term
->pre_bidi_cache
[i
].chars
= NULL
;
1342 term
->post_bidi_cache
[i
].width
= -1;
1343 term
->post_bidi_cache
[i
].chars
= NULL
;
1347 term
->cfg
= *cfg
; /* STRUCTURE COPY */
1350 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1352 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1354 term
->use_bce
= term
->cfg
.bce
;
1355 set_erase_char(term
);
1358 term
->blink_is_real
= term
->cfg
.blinktext
;
1360 if (reset_charclass
)
1361 for (i
= 0; i
< 256; i
++)
1362 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1364 if (term
->cfg
.no_alt_screen
)
1365 swap_screen(term
, 0, FALSE
, FALSE
);
1366 if (term
->cfg
.no_mouse_rep
) {
1367 term
->xterm_mouse
= 0;
1368 set_raw_mouse_mode(term
->frontend
, 0);
1370 if (term
->cfg
.no_remote_charset
) {
1371 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
1372 term
->sco_acs
= term
->alt_sco_acs
= 0;
1375 if (!*term
->cfg
.printer
) {
1376 term_print_finish(term
);
1378 term_schedule_tblink(term
);
1379 term_schedule_cblink(term
);
1383 * Clear the scrollback.
1385 void term_clrsb(Terminal
*term
)
1389 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
1390 sfree(line
); /* this is compressed data, not a termline */
1392 term
->tempsblines
= 0;
1393 term
->alt_sblines
= 0;
1398 * Initialise the terminal.
1400 Terminal
*term_init(Config
*mycfg
, struct unicode_data
*ucsdata
,
1406 * Allocate a new Terminal structure and initialise the fields
1409 term
= snew(Terminal
);
1410 term
->frontend
= frontend
;
1411 term
->ucsdata
= ucsdata
;
1412 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
1413 term
->logctx
= NULL
;
1414 term
->compatibility_level
= TM_PUTTY
;
1415 strcpy(term
->id_string
, "\033[?6c");
1416 term
->cblink_pending
= term
->tblink_pending
= FALSE
;
1417 term
->paste_buffer
= NULL
;
1418 term
->paste_len
= 0;
1419 term
->last_paste
= 0;
1420 bufchain_init(&term
->inbuf
);
1421 bufchain_init(&term
->printer_buf
);
1422 term
->printing
= term
->only_printing
= FALSE
;
1423 term
->print_job
= NULL
;
1424 term
->vt52_mode
= FALSE
;
1425 term
->cr_lf_return
= FALSE
;
1426 term
->seen_disp_event
= FALSE
;
1427 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
1428 term
->reset_132
= FALSE
;
1429 term
->cblinker
= term
->tblinker
= 0;
1430 term
->has_focus
= 1;
1431 term
->repeat_off
= FALSE
;
1432 term
->termstate
= TOPLEVEL
;
1433 term
->selstate
= NO_SELECTION
;
1436 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
1437 term
->tempsblines
= 0;
1438 term
->alt_sblines
= 0;
1440 term
->disptext
= NULL
;
1441 term
->dispcursx
= term
->dispcursy
= -1;
1444 term
->rows
= term
->cols
= -1;
1446 term
->beephead
= term
->beeptail
= NULL
;
1447 #ifdef OPTIMISE_SCROLL
1448 term
->scrollhead
= term
->scrolltail
= NULL
;
1449 #endif /* OPTIMISE_SCROLL */
1451 term
->lastbeep
= FALSE
;
1452 term
->beep_overloaded
= FALSE
;
1453 term
->attr_mask
= 0xffffffff;
1454 term
->resize_fn
= NULL
;
1455 term
->resize_ctx
= NULL
;
1456 term
->in_term_out
= FALSE
;
1458 term
->ltemp_size
= 0;
1459 term
->wcFrom
= NULL
;
1461 term
->wcFromTo_size
= 0;
1463 term
->window_update_pending
= FALSE
;
1465 term
->bidi_cache_size
= 0;
1466 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
1469 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
1470 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
1471 term
->basic_erase_char
.cc_next
= 0;
1472 term
->erase_char
= term
->basic_erase_char
;
1477 void term_free(Terminal
*term
)
1480 struct beeptime
*beep
;
1483 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
1484 sfree(line
); /* compressed data, not a termline */
1485 freetree234(term
->scrollback
);
1486 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
1488 freetree234(term
->screen
);
1489 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
1491 freetree234(term
->alt_screen
);
1492 if (term
->disptext
) {
1493 for (i
= 0; i
< term
->rows
; i
++)
1494 freeline(term
->disptext
[i
]);
1496 sfree(term
->disptext
);
1497 while (term
->beephead
) {
1498 beep
= term
->beephead
;
1499 term
->beephead
= beep
->next
;
1502 bufchain_clear(&term
->inbuf
);
1504 printer_finish_job(term
->print_job
);
1505 bufchain_clear(&term
->printer_buf
);
1506 sfree(term
->paste_buffer
);
1508 sfree(term
->wcFrom
);
1511 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1512 sfree(term
->pre_bidi_cache
[i
].chars
);
1513 sfree(term
->post_bidi_cache
[i
].chars
);
1515 sfree(term
->pre_bidi_cache
);
1516 sfree(term
->post_bidi_cache
);
1518 expire_timer_context(term
);
1524 * Set up the terminal for a given size.
1526 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1529 termline
**newdisp
, *line
;
1530 int i
, j
, oldrows
= term
->rows
;
1532 int save_alt_which
= term
->alt_which
;
1534 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1535 newsavelines
== term
->savelines
)
1536 return; /* nothing to do */
1539 swap_screen(term
, 0, FALSE
, FALSE
);
1541 term
->alt_t
= term
->marg_t
= 0;
1542 term
->alt_b
= term
->marg_b
= newrows
- 1;
1544 if (term
->rows
== -1) {
1545 term
->scrollback
= newtree234(NULL
);
1546 term
->screen
= newtree234(NULL
);
1547 term
->tempsblines
= 0;
1552 * Resize the screen and scrollback. We only need to shift
1553 * lines around within our data structures, because lineptr()
1554 * will take care of resizing each individual line if
1557 * - If the new screen is longer, we shunt lines in from temporary
1558 * scrollback if possible, otherwise we add new blank lines at
1561 * - If the new screen is shorter, we remove any blank lines at
1562 * the bottom if possible, otherwise shunt lines above the cursor
1563 * to scrollback if possible, otherwise delete lines below the
1566 * - Then, if the new scrollback length is less than the
1567 * amount of scrollback we actually have, we must throw some
1570 sblen
= count234(term
->scrollback
);
1571 /* Do this loop to expand the screen if newrows > rows */
1572 assert(term
->rows
== count234(term
->screen
));
1573 while (term
->rows
< newrows
) {
1574 if (term
->tempsblines
> 0) {
1575 unsigned char *cline
;
1576 /* Insert a line from the scrollback at the top of the screen. */
1577 assert(sblen
>= term
->tempsblines
);
1578 cline
= delpos234(term
->scrollback
, --sblen
);
1579 line
= decompressline(cline
, NULL
);
1581 line
->temporary
= FALSE
; /* reconstituted line is now real */
1582 term
->tempsblines
-= 1;
1583 addpos234(term
->screen
, line
, 0);
1585 term
->savecurs
.y
+= 1;
1587 /* Add a new blank line at the bottom of the screen. */
1588 line
= newline(term
, newcols
, FALSE
);
1589 addpos234(term
->screen
, line
, count234(term
->screen
));
1593 /* Do this loop to shrink the screen if newrows < rows */
1594 while (term
->rows
> newrows
) {
1595 if (term
->curs
.y
< term
->rows
- 1) {
1596 /* delete bottom row, unless it contains the cursor */
1597 sfree(delpos234(term
->screen
, term
->rows
- 1));
1599 /* push top row to scrollback */
1600 line
= delpos234(term
->screen
, 0);
1601 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1603 term
->tempsblines
+= 1;
1605 term
->savecurs
.y
-= 1;
1609 assert(term
->rows
== newrows
);
1610 assert(count234(term
->screen
) == newrows
);
1612 /* Delete any excess lines from the scrollback. */
1613 while (sblen
> newsavelines
) {
1614 line
= delpos234(term
->scrollback
, 0);
1618 if (sblen
< term
->tempsblines
)
1619 term
->tempsblines
= sblen
;
1620 assert(count234(term
->scrollback
) <= newsavelines
);
1621 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1624 /* Make a new displayed text buffer. */
1625 newdisp
= snewn(newrows
, termline
*);
1626 for (i
= 0; i
< newrows
; i
++) {
1627 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1628 for (j
= 0; j
< newcols
; j
++)
1629 newdisp
[i
]->chars
[j
].attr
= ATTR_INVALID
;
1631 if (term
->disptext
) {
1632 for (i
= 0; i
< oldrows
; i
++)
1633 freeline(term
->disptext
[i
]);
1635 sfree(term
->disptext
);
1636 term
->disptext
= newdisp
;
1637 term
->dispcursx
= term
->dispcursy
= -1;
1639 /* Make a new alternate screen. */
1640 newalt
= newtree234(NULL
);
1641 for (i
= 0; i
< newrows
; i
++) {
1642 line
= newline(term
, newcols
, TRUE
);
1643 addpos234(newalt
, line
, i
);
1645 if (term
->alt_screen
) {
1646 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1648 freetree234(term
->alt_screen
);
1650 term
->alt_screen
= newalt
;
1651 term
->alt_sblines
= 0;
1653 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1656 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1657 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1660 /* Check that the cursor positions are still valid. */
1661 if (term
->savecurs
.y
< 0)
1662 term
->savecurs
.y
= 0;
1663 if (term
->savecurs
.y
>= newrows
)
1664 term
->savecurs
.y
= newrows
- 1;
1665 if (term
->curs
.y
< 0)
1667 if (term
->curs
.y
>= newrows
)
1668 term
->curs
.y
= newrows
- 1;
1669 if (term
->curs
.x
>= newcols
)
1670 term
->curs
.x
= newcols
- 1;
1671 term
->alt_x
= term
->alt_y
= 0;
1672 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1674 term
->rows
= newrows
;
1675 term
->cols
= newcols
;
1676 term
->savelines
= newsavelines
;
1678 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1682 if (term
->resize_fn
)
1683 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1687 * Hand a function and context pointer to the terminal which it can
1688 * use to notify a back end of resizes.
1690 void term_provide_resize_fn(Terminal
*term
,
1691 void (*resize_fn
)(void *, int, int),
1694 term
->resize_fn
= resize_fn
;
1695 term
->resize_ctx
= resize_ctx
;
1696 if (term
->cols
> 0 && term
->rows
> 0)
1697 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1700 /* Find the bottom line on the screen that has any content.
1701 * If only the top line has content, returns 0.
1702 * If no lines have content, return -1.
1704 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1707 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1708 termline
*line
= index234(screen
, i
);
1710 for (j
= 0; j
< line
->cols
; j
++)
1711 if (!termchars_equal(&line
->chars
[j
], &term
->erase_char
))
1713 if (j
!= line
->cols
) break;
1719 * Swap screens. If `reset' is TRUE and we have been asked to
1720 * switch to the alternate screen, we must bring most of its
1721 * configuration from the main screen and erase the contents of the
1722 * alternate screen completely. (This is even true if we're already
1723 * on it! Blame xterm.)
1725 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1731 reset
= FALSE
; /* do no weird resetting if which==0 */
1733 if (which
!= term
->alt_which
) {
1734 term
->alt_which
= which
;
1736 ttr
= term
->alt_screen
;
1737 term
->alt_screen
= term
->screen
;
1739 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1741 if (!reset
&& !keep_cur_pos
)
1742 term
->curs
.x
= term
->alt_x
;
1745 if (!reset
&& !keep_cur_pos
)
1746 term
->curs
.y
= term
->alt_y
;
1749 if (!reset
) term
->marg_t
= term
->alt_t
;
1752 if (!reset
) term
->marg_b
= term
->alt_b
;
1755 if (!reset
) term
->dec_om
= term
->alt_om
;
1758 if (!reset
) term
->wrap
= term
->alt_wrap
;
1761 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1762 term
->alt_wnext
= t
;
1764 if (!reset
) term
->insert
= term
->alt_ins
;
1767 if (!reset
) term
->cset
= term
->alt_cset
;
1770 if (!reset
) term
->utf
= term
->alt_utf
;
1773 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1774 term
->alt_sco_acs
= t
;
1777 if (reset
&& term
->screen
) {
1779 * Yes, this _is_ supposed to honour background-colour-erase.
1781 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1786 * Update the scroll bar.
1788 static void update_sbar(Terminal
*term
)
1790 int nscroll
= sblines(term
);
1791 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1792 nscroll
+ term
->disptop
, term
->rows
);
1796 * Check whether the region bounded by the two pointers intersects
1797 * the scroll region, and de-select the on-screen selection if so.
1799 static void check_selection(Terminal
*term
, pos from
, pos to
)
1801 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1806 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1807 * for backward.) `sb' is TRUE if the scrolling is permitted to
1808 * affect the scrollback buffer.
1810 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1813 int i
, seltop
, olddisptop
, shift
;
1815 if (topline
!= 0 || term
->alt_which
!= 0)
1818 olddisptop
= term
->disptop
;
1822 line
= delpos234(term
->screen
, botline
);
1823 resizeline(term
, line
, term
->cols
);
1824 for (i
= 0; i
< term
->cols
; i
++)
1825 copy_termchar(line
, i
, &term
->erase_char
);
1826 line
->lattr
= LATTR_NORM
;
1827 addpos234(term
->screen
, line
, topline
);
1829 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
1831 if (term
->selstart
.y
> botline
) {
1832 term
->selstart
.y
= botline
+ 1;
1833 term
->selstart
.x
= 0;
1836 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
1838 if (term
->selend
.y
> botline
) {
1839 term
->selend
.y
= botline
+ 1;
1848 line
= delpos234(term
->screen
, topline
);
1849 #ifdef TERM_CC_DIAGS
1852 if (sb
&& term
->savelines
> 0) {
1853 int sblen
= count234(term
->scrollback
);
1855 * We must add this line to the scrollback. We'll
1856 * remove a line from the top of the scrollback if
1857 * the scrollback is full.
1859 if (sblen
== term
->savelines
) {
1860 unsigned char *cline
;
1863 cline
= delpos234(term
->scrollback
, 0);
1866 term
->tempsblines
+= 1;
1868 addpos234(term
->scrollback
, compressline(line
), sblen
);
1870 /* now `line' itself can be reused as the bottom line */
1873 * If the user is currently looking at part of the
1874 * scrollback, and they haven't enabled any options
1875 * that are going to reset the scrollback as a
1876 * result of this movement, then the chances are
1877 * they'd like to keep looking at the same line. So
1878 * we move their viewpoint at the same rate as the
1879 * scroll, at least until their viewpoint hits the
1880 * top end of the scrollback buffer, at which point
1881 * we don't have the choice any more.
1883 * Thanks to Jan Holmen Holsten for the idea and
1884 * initial implementation.
1886 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
1889 resizeline(term
, line
, term
->cols
);
1890 for (i
= 0; i
< term
->cols
; i
++)
1891 copy_termchar(line
, i
, &term
->erase_char
);
1892 line
->lattr
= LATTR_NORM
;
1893 addpos234(term
->screen
, line
, botline
);
1896 * If the selection endpoints move into the scrollback,
1897 * we keep them moving until they hit the top. However,
1898 * of course, if the line _hasn't_ moved into the
1899 * scrollback then we don't do this, and cut them off
1900 * at the top of the scroll region.
1902 * This applies to selstart and selend (for an existing
1903 * selection), and also selanchor (for one being
1904 * selected as we speak).
1906 seltop
= sb ?
-term
->savelines
: topline
;
1908 if (term
->selstate
!= NO_SELECTION
) {
1909 if (term
->selstart
.y
>= seltop
&&
1910 term
->selstart
.y
<= botline
) {
1912 if (term
->selstart
.y
< seltop
) {
1913 term
->selstart
.y
= seltop
;
1914 term
->selstart
.x
= 0;
1917 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
1919 if (term
->selend
.y
< seltop
) {
1920 term
->selend
.y
= seltop
;
1924 if (term
->selanchor
.y
>= seltop
&&
1925 term
->selanchor
.y
<= botline
) {
1926 term
->selanchor
.y
--;
1927 if (term
->selanchor
.y
< seltop
) {
1928 term
->selanchor
.y
= seltop
;
1929 term
->selanchor
.x
= 0;
1937 #ifdef OPTIMISE_SCROLL
1938 shift
+= term
->disptop
- olddisptop
;
1939 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
1940 scroll_display(term
, topline
, botline
, shift
);
1941 #endif /* OPTIMISE_SCROLL */
1944 #ifdef OPTIMISE_SCROLL
1946 * Add a scroll of a region on the screen into the pending scroll list.
1947 * `lines' is +ve for scrolling forward, -ve for backward.
1949 * If the scroll is on the same area as the last scroll in the list,
1952 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
1954 struct scrollregion
*newscroll
;
1955 if (term
->scrolltail
&&
1956 term
->scrolltail
->topline
== topline
&&
1957 term
->scrolltail
->botline
== botline
) {
1958 term
->scrolltail
->lines
+= lines
;
1960 newscroll
= snew(struct scrollregion
);
1961 newscroll
->topline
= topline
;
1962 newscroll
->botline
= botline
;
1963 newscroll
->lines
= lines
;
1964 newscroll
->next
= NULL
;
1966 if (!term
->scrollhead
)
1967 term
->scrollhead
= newscroll
;
1969 term
->scrolltail
->next
= newscroll
;
1970 term
->scrolltail
= newscroll
;
1975 * Scroll the physical display, and our conception of it in disptext.
1977 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
1979 int distance
, nlines
, i
, j
;
1981 distance
= lines
> 0 ? lines
: -lines
;
1982 nlines
= botline
- topline
+ 1 - distance
;
1984 for (i
= 0; i
< nlines
; i
++)
1985 for (j
= 0; j
< term
->cols
; j
++)
1986 copy_termchar(term
->disptext
[i
], j
,
1987 term
->disptext
[i
+distance
]->chars
+j
);
1988 if (term
->dispcursy
>= 0 &&
1989 term
->dispcursy
>= topline
+ distance
&&
1990 term
->dispcursy
< topline
+ distance
+ nlines
)
1991 term
->dispcursy
-= distance
;
1992 for (i
= 0; i
< distance
; i
++)
1993 for (j
= 0; j
< term
->cols
; j
++)
1994 term
->disptext
[nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
1996 for (i
= nlines
; i
-- ;)
1997 for (j
= 0; j
< term
->cols
; j
++)
1998 copy_termchar(term
->disptext
[i
+distance
], j
,
1999 term
->disptext
[i
]->chars
+j
);
2000 if (term
->dispcursy
>= 0 &&
2001 term
->dispcursy
>= topline
&&
2002 term
->dispcursy
< topline
+ nlines
)
2003 term
->dispcursy
+= distance
;
2004 for (i
= 0; i
< distance
; i
++)
2005 for (j
= 0; j
< term
->cols
; j
++)
2006 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
2008 save_scroll(term
, topline
, botline
, lines
);
2010 #endif /* OPTIMISE_SCROLL */
2013 * Move the cursor to a given position, clipping at boundaries. We
2014 * may or may not want to clip at the scroll margin: marg_clip is 0
2015 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2016 * even _being_ outside the margins.
2018 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
2022 if (x
>= term
->cols
)
2025 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
2028 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
2034 if (y
>= term
->rows
)
2038 term
->wrapnext
= FALSE
;
2042 * Save or restore the cursor and SGR mode.
2044 static void save_cursor(Terminal
*term
, int save
)
2047 term
->savecurs
= term
->curs
;
2048 term
->save_attr
= term
->curr_attr
;
2049 term
->save_cset
= term
->cset
;
2050 term
->save_utf
= term
->utf
;
2051 term
->save_wnext
= term
->wrapnext
;
2052 term
->save_csattr
= term
->cset_attr
[term
->cset
];
2053 term
->save_sco_acs
= term
->sco_acs
;
2055 term
->curs
= term
->savecurs
;
2056 /* Make sure the window hasn't shrunk since the save */
2057 if (term
->curs
.x
>= term
->cols
)
2058 term
->curs
.x
= term
->cols
- 1;
2059 if (term
->curs
.y
>= term
->rows
)
2060 term
->curs
.y
= term
->rows
- 1;
2062 term
->curr_attr
= term
->save_attr
;
2063 term
->cset
= term
->save_cset
;
2064 term
->utf
= term
->save_utf
;
2065 term
->wrapnext
= term
->save_wnext
;
2067 * wrapnext might reset to False if the x position is no
2068 * longer at the rightmost edge.
2070 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
2071 term
->wrapnext
= FALSE
;
2072 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
2073 term
->sco_acs
= term
->save_sco_acs
;
2074 set_erase_char(term
);
2079 * This function is called before doing _anything_ which affects
2080 * only part of a line of text. It is used to mark the boundary
2081 * between two character positions, and it indicates that some sort
2082 * of effect is going to happen on only one side of that boundary.
2084 * The effect of this function is to check whether a CJK
2085 * double-width character is straddling the boundary, and to remove
2086 * it and replace it with two spaces if so. (Of course, one or
2087 * other of those spaces is then likely to be replaced with
2088 * something else again, as a result of whatever happens next.)
2090 * Also, if the boundary is at the right-hand _edge_ of the screen,
2091 * it implies something deliberate is being done to the rightmost
2092 * column position; hence we must clear LATTR_WRAPPED2.
2094 * The input to the function is the coordinates of the _second_
2095 * character of the pair.
2097 static void check_boundary(Terminal
*term
, int x
, int y
)
2101 /* Validate input coordinates, just in case. */
2102 if (x
== 0 || x
> term
->cols
)
2105 ldata
= scrlineptr(y
);
2106 if (x
== term
->cols
) {
2107 ldata
->lattr
&= ~LATTR_WRAPPED2
;
2109 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
2110 clear_cc(ldata
, x
-1);
2112 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
2113 ldata
->chars
[x
] = ldata
->chars
[x
-1];
2119 * Erase a large portion of the screen: the whole screen, or the
2120 * whole line, or parts thereof.
2122 static void erase_lots(Terminal
*term
,
2123 int line_only
, int from_begin
, int to_end
)
2127 int erasing_lines_from_top
= 0;
2130 start
.y
= term
->curs
.y
;
2132 end
.y
= term
->curs
.y
+ 1;
2134 erase_lattr
= FALSE
;
2149 if (!from_begin
|| !to_end
)
2150 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2151 check_selection(term
, start
, end
);
2153 /* Clear screen also forces a full window redraw, just in case. */
2154 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
2155 term_invalidate(term
);
2157 /* Lines scrolled away shouldn't be brought back on if the terminal
2159 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
2160 erasing_lines_from_top
= 1;
2162 if (term
->cfg
.erase_to_scrollback
&& erasing_lines_from_top
) {
2163 /* If it's a whole number of lines, starting at the top, and
2164 * we're fully erasing them, erase by scrolling and keep the
2165 * lines in the scrollback. */
2166 int scrolllines
= end
.y
;
2167 if (end
.y
== term
->rows
) {
2168 /* Shrink until we find a non-empty row.*/
2169 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
2171 if (scrolllines
> 0)
2172 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
2174 termline
*ldata
= scrlineptr(start
.y
);
2175 while (poslt(start
, end
)) {
2176 if (start
.x
== term
->cols
) {
2178 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
2180 ldata
->lattr
= LATTR_NORM
;
2182 copy_termchar(ldata
, start
.x
, &term
->erase_char
);
2184 if (incpos(start
) && start
.y
< term
->rows
) {
2185 ldata
= scrlineptr(start
.y
);
2190 /* After an erase of lines from the top of the screen, we shouldn't
2191 * bring the lines back again if the terminal enlarges (since the user or
2192 * application has explictly thrown them away). */
2193 if (erasing_lines_from_top
&& !(term
->alt_which
))
2194 term
->tempsblines
= 0;
2198 * Insert or delete characters within the current line. n is +ve if
2199 * insertion is desired, and -ve for deletion.
2201 static void insch(Terminal
*term
, int n
)
2203 int dir
= (n
< 0 ?
-1 : +1);
2208 n
= (n
< 0 ?
-n
: n
);
2209 if (n
> term
->cols
- term
->curs
.x
)
2210 n
= term
->cols
- term
->curs
.x
;
2211 m
= term
->cols
- term
->curs
.x
- n
;
2212 cursplus
.y
= term
->curs
.y
;
2213 cursplus
.x
= term
->curs
.x
+ n
;
2214 check_selection(term
, term
->curs
, cursplus
);
2215 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2217 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
2218 ldata
= scrlineptr(term
->curs
.y
);
2220 for (j
= 0; j
< m
; j
++)
2221 move_termchar(ldata
,
2222 ldata
->chars
+ term
->curs
.x
+ j
,
2223 ldata
->chars
+ term
->curs
.x
+ j
+ n
);
2225 copy_termchar(ldata
, term
->curs
.x
+ m
++, &term
->erase_char
);
2228 move_termchar(ldata
,
2229 ldata
->chars
+ term
->curs
.x
+ j
+ n
,
2230 ldata
->chars
+ term
->curs
.x
+ j
);
2232 copy_termchar(ldata
, term
->curs
.x
+ n
, &term
->erase_char
);
2237 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2238 * whether the mode is a DEC private one or a normal one.)
2240 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
2244 case 1: /* DECCKM: application cursor keys */
2245 term
->app_cursor_keys
= state
;
2247 case 2: /* DECANM: VT52 mode */
2248 term
->vt52_mode
= !state
;
2249 if (term
->vt52_mode
) {
2250 term
->blink_is_real
= FALSE
;
2251 term
->vt52_bold
= FALSE
;
2253 term
->blink_is_real
= term
->cfg
.blinktext
;
2255 term_schedule_tblink(term
);
2257 case 3: /* DECCOLM: 80/132 columns */
2259 if (!term
->cfg
.no_remote_resize
)
2260 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
2261 term
->reset_132
= state
;
2262 term
->alt_t
= term
->marg_t
= 0;
2263 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
2264 move(term
, 0, 0, 0);
2265 erase_lots(term
, FALSE
, TRUE
, TRUE
);
2267 case 5: /* DECSCNM: reverse video */
2269 * Toggle reverse video. If we receive an OFF within the
2270 * visual bell timeout period after an ON, we trigger an
2271 * effective visual bell, so that ESC[?5hESC[?5l will
2272 * always be an actually _visible_ visual bell.
2274 if (term
->rvideo
&& !state
) {
2275 /* This is an OFF, so set up a vbell */
2276 term_schedule_vbell(term
, TRUE
, term
->rvbell_startpoint
);
2277 } else if (!term
->rvideo
&& state
) {
2278 /* This is an ON, so we notice the time and save it. */
2279 term
->rvbell_startpoint
= GETTICKCOUNT();
2281 term
->rvideo
= state
;
2282 seen_disp_event(term
);
2284 case 6: /* DECOM: DEC origin mode */
2285 term
->dec_om
= state
;
2287 case 7: /* DECAWM: auto wrap */
2290 case 8: /* DECARM: auto key repeat */
2291 term
->repeat_off
= !state
;
2293 case 10: /* DECEDM: set local edit mode */
2294 term
->term_editing
= state
;
2295 if (term
->ldisc
) /* cause ldisc to notice changes */
2296 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2298 case 25: /* DECTCEM: enable/disable cursor */
2299 compatibility2(OTHER
, VT220
);
2300 term
->cursor_on
= state
;
2301 seen_disp_event(term
);
2303 case 47: /* alternate screen */
2304 compatibility(OTHER
);
2306 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
2309 case 1000: /* xterm mouse 1 */
2310 term
->xterm_mouse
= state ?
1 : 0;
2311 set_raw_mouse_mode(term
->frontend
, state
);
2313 case 1002: /* xterm mouse 2 */
2314 term
->xterm_mouse
= state ?
2 : 0;
2315 set_raw_mouse_mode(term
->frontend
, state
);
2317 case 1047: /* alternate screen */
2318 compatibility(OTHER
);
2320 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
2323 case 1048: /* save/restore cursor */
2324 if (!term
->cfg
.no_alt_screen
)
2325 save_cursor(term
, state
);
2326 if (!state
) seen_disp_event(term
);
2328 case 1049: /* cursor & alternate screen */
2329 if (state
&& !term
->cfg
.no_alt_screen
)
2330 save_cursor(term
, state
);
2331 if (!state
) seen_disp_event(term
);
2332 compatibility(OTHER
);
2334 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
2335 if (!state
&& !term
->cfg
.no_alt_screen
)
2336 save_cursor(term
, state
);
2341 case 4: /* IRM: set insert mode */
2342 compatibility(VT102
);
2343 term
->insert
= state
;
2345 case 12: /* SRM: set echo mode */
2346 term
->term_echoing
= !state
;
2347 if (term
->ldisc
) /* cause ldisc to notice changes */
2348 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2350 case 20: /* LNM: Return sends ... */
2351 term
->cr_lf_return
= state
;
2353 case 34: /* WYULCURM: Make cursor BIG */
2354 compatibility2(OTHER
, VT220
);
2355 term
->big_cursor
= !state
;
2360 * Process an OSC sequence: set window title or icon name.
2362 static void do_osc(Terminal
*term
)
2365 while (term
->osc_strlen
--)
2366 term
->wordness
[(unsigned char)
2367 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
2369 term
->osc_string
[term
->osc_strlen
] = '\0';
2370 switch (term
->esc_args
[0]) {
2373 if (!term
->cfg
.no_remote_wintitle
)
2374 set_icon(term
->frontend
, term
->osc_string
);
2375 if (term
->esc_args
[0] == 1)
2377 /* fall through: parameter 0 means set both */
2380 if (!term
->cfg
.no_remote_wintitle
)
2381 set_title(term
->frontend
, term
->osc_string
);
2388 * ANSI printing routines.
2390 static void term_print_setup(Terminal
*term
)
2392 bufchain_clear(&term
->printer_buf
);
2393 term
->print_job
= printer_start_job(term
->cfg
.printer
);
2395 static void term_print_flush(Terminal
*term
)
2400 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
2401 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2404 printer_job_data(term
->print_job
, data
, len
);
2405 bufchain_consume(&term
->printer_buf
, len
);
2408 static void term_print_finish(Terminal
*term
)
2414 if (!term
->printing
&& !term
->only_printing
)
2415 return; /* we need do nothing */
2417 term_print_flush(term
);
2418 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
2419 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2421 if (c
== '\033' || c
== '\233') {
2422 bufchain_consume(&term
->printer_buf
, size
);
2425 printer_job_data(term
->print_job
, &c
, 1);
2426 bufchain_consume(&term
->printer_buf
, 1);
2429 printer_finish_job(term
->print_job
);
2430 term
->print_job
= NULL
;
2431 term
->printing
= term
->only_printing
= FALSE
;
2435 * Remove everything currently in `inbuf' and stick it up on the
2436 * in-memory display. There's a big state machine in here to
2437 * process escape sequences...
2439 static void term_out(Terminal
*term
)
2443 unsigned char localbuf
[256], *chars
;
2448 chars
= NULL
; /* placate compiler warnings */
2449 while (nchars
> 0 || bufchain_size(&term
->inbuf
) > 0) {
2453 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
2454 if (nchars
> sizeof(localbuf
))
2455 nchars
= sizeof(localbuf
);
2456 memcpy(localbuf
, ret
, nchars
);
2457 bufchain_consume(&term
->inbuf
, nchars
);
2459 assert(chars
!= NULL
);
2465 * Optionally log the session traffic to a file. Useful for
2466 * debugging and possibly also useful for actual logging.
2468 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
2469 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
2475 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2476 * be able to display 8-bit characters, but I'll let that go 'cause
2481 * If we're printing, add the character to the printer
2484 if (term
->printing
) {
2485 bufchain_add(&term
->printer_buf
, &c
, 1);
2488 * If we're in print-only mode, we use a much simpler
2489 * state machine designed only to recognise the ESC[4i
2490 * termination sequence.
2492 if (term
->only_printing
) {
2494 term
->print_state
= 1;
2495 else if (c
== (unsigned char)'\233')
2496 term
->print_state
= 2;
2497 else if (c
== '[' && term
->print_state
== 1)
2498 term
->print_state
= 2;
2499 else if (c
== '4' && term
->print_state
== 2)
2500 term
->print_state
= 3;
2501 else if (c
== 'i' && term
->print_state
== 3)
2502 term
->print_state
= 4;
2504 term
->print_state
= 0;
2505 if (term
->print_state
== 4) {
2506 term_print_finish(term
);
2512 /* First see about all those translations. */
2513 if (term
->termstate
== TOPLEVEL
) {
2515 switch (term
->utf_state
) {
2518 /* UTF-8 must be stateless so we ignore iso2022. */
2519 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2520 c
= term
->ucsdata
->unitab_ctrl
[c
];
2521 else c
= ((unsigned char)c
) | CSET_ASCII
;
2523 } else if ((c
& 0xe0) == 0xc0) {
2524 term
->utf_size
= term
->utf_state
= 1;
2525 term
->utf_char
= (c
& 0x1f);
2526 } else if ((c
& 0xf0) == 0xe0) {
2527 term
->utf_size
= term
->utf_state
= 2;
2528 term
->utf_char
= (c
& 0x0f);
2529 } else if ((c
& 0xf8) == 0xf0) {
2530 term
->utf_size
= term
->utf_state
= 3;
2531 term
->utf_char
= (c
& 0x07);
2532 } else if ((c
& 0xfc) == 0xf8) {
2533 term
->utf_size
= term
->utf_state
= 4;
2534 term
->utf_char
= (c
& 0x03);
2535 } else if ((c
& 0xfe) == 0xfc) {
2536 term
->utf_size
= term
->utf_state
= 5;
2537 term
->utf_char
= (c
& 0x01);
2548 if ((c
& 0xC0) != 0x80) {
2551 term
->utf_state
= 0;
2554 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2555 if (--term
->utf_state
)
2560 /* Is somebody trying to be evil! */
2562 (c
< 0x800 && term
->utf_size
>= 2) ||
2563 (c
< 0x10000 && term
->utf_size
>= 3) ||
2564 (c
< 0x200000 && term
->utf_size
>= 4) ||
2565 (c
< 0x4000000 && term
->utf_size
>= 5))
2568 /* Unicode line separator and paragraph separator are CR-LF */
2569 if (c
== 0x2028 || c
== 0x2029)
2572 /* High controls are probably a Baaad idea too. */
2576 /* The UTF-16 surrogates are not nice either. */
2577 /* The standard give the option of decoding these:
2578 * I don't want to! */
2579 if (c
>= 0xD800 && c
< 0xE000)
2582 /* ISO 10646 characters now limited to UTF-16 range. */
2586 /* This is currently a TagPhobic application.. */
2587 if (c
>= 0xE0000 && c
<= 0xE007F)
2590 /* U+FEFF is best seen as a null. */
2593 /* But U+FFFE is an error. */
2594 if (c
== 0xFFFE || c
== 0xFFFF)
2599 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2600 else if(term
->sco_acs
&&
2601 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2603 if (term
->sco_acs
== 2) c
|= 0x80;
2606 switch (term
->cset_attr
[term
->cset
]) {
2608 * Linedraw characters are different from 'ESC ( B'
2609 * only for a small range. For ones outside that
2610 * range, make sure we use the same font as well as
2611 * the same encoding.
2614 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2615 c
= term
->ucsdata
->unitab_ctrl
[c
];
2617 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2621 /* If UK-ASCII, make the '#' a LineDraw Pound */
2623 c
= '}' | CSET_LINEDRW
;
2626 /*FALLTHROUGH*/ case CSET_ASCII
:
2627 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2628 c
= term
->ucsdata
->unitab_ctrl
[c
];
2630 c
= ((unsigned char) c
) | CSET_ASCII
;
2633 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2640 * How about C1 controls?
2641 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2643 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2644 !term
->vt52_mode
&& has_compat(VT220
)) {
2648 term
->termstate
= SEEN_ESC
;
2649 term
->esc_query
= FALSE
;
2650 c
= '@' + (c
& 0x1F);
2654 /* Or the GL control. */
2655 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2656 if (term
->curs
.x
&& !term
->wrapnext
)
2658 term
->wrapnext
= FALSE
;
2659 /* destructive backspace might be disabled */
2660 if (!term
->cfg
.no_dbackspace
) {
2661 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2662 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2663 copy_termchar(scrlineptr(term
->curs
.y
),
2664 term
->curs
.x
, &term
->erase_char
);
2667 /* Or normal C0 controls. */
2668 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2670 case '\005': /* ENQ: terminal type query */
2672 * Strictly speaking this is VT100 but a VT100 defaults to
2673 * no response. Other terminals respond at their option.
2675 * Don't put a CR in the default string as this tends to
2676 * upset some weird software.
2678 compatibility(ANSIMIN
);
2680 char abuf
[lenof(term
->cfg
.answerback
)], *s
, *d
;
2681 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
;) {
2683 char c
= ctrlparse(s
, &n
);
2691 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2695 case '\007': /* BEL: Bell */
2697 struct beeptime
*newbeep
;
2698 unsigned long ticks
;
2700 ticks
= GETTICKCOUNT();
2702 if (!term
->beep_overloaded
) {
2703 newbeep
= snew(struct beeptime
);
2704 newbeep
->ticks
= ticks
;
2705 newbeep
->next
= NULL
;
2706 if (!term
->beephead
)
2707 term
->beephead
= newbeep
;
2709 term
->beeptail
->next
= newbeep
;
2710 term
->beeptail
= newbeep
;
2715 * Throw out any beeps that happened more than
2718 while (term
->beephead
&&
2719 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
2720 struct beeptime
*tmp
= term
->beephead
;
2721 term
->beephead
= tmp
->next
;
2723 if (!term
->beephead
)
2724 term
->beeptail
= NULL
;
2728 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
2729 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
2731 * If we're currently overloaded and the
2732 * last beep was more than s seconds ago,
2733 * leave overload mode.
2735 term
->beep_overloaded
= FALSE
;
2736 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
2737 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
2739 * Now, if we have n or more beeps
2740 * remaining in the queue, go into overload
2743 term
->beep_overloaded
= TRUE
;
2745 term
->lastbeep
= ticks
;
2748 * Perform an actual beep if we're not overloaded.
2750 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
2751 beep(term
->frontend
, term
->cfg
.beep
);
2753 if (term
->cfg
.beep
== BELL_VISUAL
) {
2754 term_schedule_vbell(term
, FALSE
, 0);
2757 seen_disp_event(term
);
2760 case '\b': /* BS: Back space */
2761 if (term
->curs
.x
== 0 &&
2762 (term
->curs
.y
== 0 || term
->wrap
== 0))
2764 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2765 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2766 else if (term
->wrapnext
)
2767 term
->wrapnext
= FALSE
;
2770 seen_disp_event(term
);
2772 case '\016': /* LS1: Locking-shift one */
2773 compatibility(VT100
);
2776 case '\017': /* LS0: Locking-shift zero */
2777 compatibility(VT100
);
2780 case '\033': /* ESC: Escape */
2781 if (term
->vt52_mode
)
2782 term
->termstate
= VT52_ESC
;
2784 compatibility(ANSIMIN
);
2785 term
->termstate
= SEEN_ESC
;
2786 term
->esc_query
= FALSE
;
2789 case '\015': /* CR: Carriage return */
2791 term
->wrapnext
= FALSE
;
2792 seen_disp_event(term
);
2793 term
->paste_hold
= 0;
2795 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2797 case '\014': /* FF: Form feed */
2798 if (has_compat(SCOANSI
)) {
2799 move(term
, 0, 0, 0);
2800 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2802 term
->wrapnext
= FALSE
;
2803 seen_disp_event(term
);
2806 case '\013': /* VT: Line tabulation */
2807 compatibility(VT100
);
2808 case '\012': /* LF: Line feed */
2809 if (term
->curs
.y
== term
->marg_b
)
2810 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2811 else if (term
->curs
.y
< term
->rows
- 1)
2813 if (term
->cfg
.lfhascr
)
2815 term
->wrapnext
= FALSE
;
2816 seen_disp_event(term
);
2817 term
->paste_hold
= 0;
2819 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2821 case '\t': /* HT: Character tabulation */
2823 pos old_curs
= term
->curs
;
2824 termline
*ldata
= scrlineptr(term
->curs
.y
);
2828 } while (term
->curs
.x
< term
->cols
- 1 &&
2829 !term
->tabs
[term
->curs
.x
]);
2831 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
2832 if (term
->curs
.x
>= term
->cols
/ 2)
2833 term
->curs
.x
= term
->cols
/ 2 - 1;
2835 if (term
->curs
.x
>= term
->cols
)
2836 term
->curs
.x
= term
->cols
- 1;
2839 check_selection(term
, old_curs
, term
->curs
);
2841 seen_disp_event(term
);
2845 switch (term
->termstate
) {
2847 /* Only graphic characters get this far;
2848 * ctrls are stripped above */
2850 termline
*cline
= scrlineptr(term
->curs
.y
);
2855 width
= (term
->cfg
.cjk_ambig_wide ?
2856 mk_wcwidth_cjk((wchar_t) c
) :
2857 mk_wcwidth((wchar_t) c
));
2859 if (term
->wrapnext
&& term
->wrap
&& width
> 0) {
2860 cline
->lattr
|= LATTR_WRAPPED
;
2861 if (term
->curs
.y
== term
->marg_b
)
2862 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2863 else if (term
->curs
.y
< term
->rows
- 1)
2866 term
->wrapnext
= FALSE
;
2867 cline
= scrlineptr(term
->curs
.y
);
2869 if (term
->insert
&& width
> 0)
2871 if (term
->selstate
!= NO_SELECTION
) {
2872 pos cursplus
= term
->curs
;
2874 check_selection(term
, term
->curs
, cursplus
);
2876 if (((c
& CSET_MASK
) == CSET_ASCII
||
2877 (c
& CSET_MASK
) == 0) &&
2879 logtraffic(term
->logctx
, (unsigned char) c
,
2885 * If we're about to display a double-width
2886 * character starting in the rightmost
2887 * column, then we do something special
2888 * instead. We must print a space in the
2889 * last column of the screen, then wrap;
2890 * and we also set LATTR_WRAPPED2 which
2891 * instructs subsequent cut-and-pasting not
2892 * only to splice this line to the one
2893 * after it, but to ignore the space in the
2894 * last character position as well.
2895 * (Because what was actually output to the
2896 * terminal was presumably just a sequence
2897 * of CJK characters, and we don't want a
2898 * space to be pasted in the middle of
2899 * those just because they had the
2900 * misfortune to start in the wrong parity
2901 * column. xterm concurs.)
2903 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2904 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2905 if (term
->curs
.x
== term
->cols
-1) {
2906 copy_termchar(cline
, term
->curs
.x
,
2908 cline
->lattr
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
2909 if (term
->curs
.y
== term
->marg_b
)
2910 scroll(term
, term
->marg_t
, term
->marg_b
,
2912 else if (term
->curs
.y
< term
->rows
- 1)
2915 cline
= scrlineptr(term
->curs
.y
);
2916 /* Now we must check_boundary again, of course. */
2917 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2918 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2922 clear_cc(cline
, term
->curs
.x
);
2923 cline
->chars
[term
->curs
.x
].chr
= c
;
2924 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2929 clear_cc(cline
, term
->curs
.x
);
2930 cline
->chars
[term
->curs
.x
].chr
= UCSWIDE
;
2931 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2935 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2936 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2939 clear_cc(cline
, term
->curs
.x
);
2940 cline
->chars
[term
->curs
.x
].chr
= c
;
2941 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2945 if (term
->curs
.x
> 0) {
2946 int x
= term
->curs
.x
- 1;
2948 /* If we're in wrapnext state, the character
2949 * to combine with is _here_, not to our left. */
2954 * If the previous character is
2955 * UCSWIDE, back up another one.
2957 if (cline
->chars
[x
].chr
== UCSWIDE
) {
2962 add_cc(cline
, x
, c
);
2963 seen_disp_event(term
);
2970 if (term
->curs
.x
== term
->cols
) {
2972 term
->wrapnext
= TRUE
;
2973 if (term
->wrap
&& term
->vt52_mode
) {
2974 cline
->lattr
|= LATTR_WRAPPED
;
2975 if (term
->curs
.y
== term
->marg_b
)
2976 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2977 else if (term
->curs
.y
< term
->rows
- 1)
2980 term
->wrapnext
= FALSE
;
2983 seen_disp_event(term
);
2989 * This state is virtually identical to SEEN_ESC, with the
2990 * exception that we have an OSC sequence in the pipeline,
2991 * and _if_ we see a backslash, we process it.
2995 term
->termstate
= TOPLEVEL
;
2998 /* else fall through */
3000 if (c
>= ' ' && c
<= '/') {
3001 if (term
->esc_query
)
3002 term
->esc_query
= -1;
3004 term
->esc_query
= c
;
3007 term
->termstate
= TOPLEVEL
;
3008 switch (ANSI(c
, term
->esc_query
)) {
3009 case '[': /* enter CSI mode */
3010 term
->termstate
= SEEN_CSI
;
3011 term
->esc_nargs
= 1;
3012 term
->esc_args
[0] = ARG_DEFAULT
;
3013 term
->esc_query
= FALSE
;
3015 case ']': /* OSC: xterm escape sequences */
3016 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3017 compatibility(OTHER
);
3018 term
->termstate
= SEEN_OSC
;
3019 term
->esc_args
[0] = 0;
3021 case '7': /* DECSC: save cursor */
3022 compatibility(VT100
);
3023 save_cursor(term
, TRUE
);
3025 case '8': /* DECRC: restore cursor */
3026 compatibility(VT100
);
3027 save_cursor(term
, FALSE
);
3028 seen_disp_event(term
);
3030 case '=': /* DECKPAM: Keypad application mode */
3031 compatibility(VT100
);
3032 term
->app_keypad_keys
= TRUE
;
3034 case '>': /* DECKPNM: Keypad numeric mode */
3035 compatibility(VT100
);
3036 term
->app_keypad_keys
= FALSE
;
3038 case 'D': /* IND: exactly equivalent to LF */
3039 compatibility(VT100
);
3040 if (term
->curs
.y
== term
->marg_b
)
3041 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3042 else if (term
->curs
.y
< term
->rows
- 1)
3044 term
->wrapnext
= FALSE
;
3045 seen_disp_event(term
);
3047 case 'E': /* NEL: exactly equivalent to CR-LF */
3048 compatibility(VT100
);
3050 if (term
->curs
.y
== term
->marg_b
)
3051 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3052 else if (term
->curs
.y
< term
->rows
- 1)
3054 term
->wrapnext
= FALSE
;
3055 seen_disp_event(term
);
3057 case 'M': /* RI: reverse index - backwards LF */
3058 compatibility(VT100
);
3059 if (term
->curs
.y
== term
->marg_t
)
3060 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
3061 else if (term
->curs
.y
> 0)
3063 term
->wrapnext
= FALSE
;
3064 seen_disp_event(term
);
3066 case 'Z': /* DECID: terminal type query */
3067 compatibility(VT100
);
3069 ldisc_send(term
->ldisc
, term
->id_string
,
3070 strlen(term
->id_string
), 0);
3072 case 'c': /* RIS: restore power-on settings */
3073 compatibility(VT100
);
3075 if (term
->ldisc
) /* cause ldisc to notice changes */
3076 ldisc_send(term
->ldisc
, NULL
, 0, 0);
3077 if (term
->reset_132
) {
3078 if (!term
->cfg
.no_remote_resize
)
3079 request_resize(term
->frontend
, 80, term
->rows
);
3080 term
->reset_132
= 0;
3083 seen_disp_event(term
);
3085 case 'H': /* HTS: set a tab */
3086 compatibility(VT100
);
3087 term
->tabs
[term
->curs
.x
] = TRUE
;
3090 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3091 compatibility(VT100
);
3097 for (i
= 0; i
< term
->rows
; i
++) {
3098 ldata
= scrlineptr(i
);
3099 for (j
= 0; j
< term
->cols
; j
++) {
3100 copy_termchar(ldata
, j
,
3101 &term
->basic_erase_char
);
3102 ldata
->chars
[j
].chr
= 'E';
3104 ldata
->lattr
= LATTR_NORM
;
3107 seen_disp_event(term
);
3108 scrtop
.x
= scrtop
.y
= 0;
3110 scrbot
.y
= term
->rows
;
3111 check_selection(term
, scrtop
, scrbot
);
3115 case ANSI('3', '#'):
3116 case ANSI('4', '#'):
3117 case ANSI('5', '#'):
3118 case ANSI('6', '#'):
3119 compatibility(VT100
);
3123 switch (ANSI(c
, term
->esc_query
)) {
3124 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3127 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3130 case ANSI('5', '#'): /* DECSWL: normal */
3131 nlattr
= LATTR_NORM
;
3133 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3134 nlattr
= LATTR_WIDE
;
3137 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
3140 /* GZD4: G0 designate 94-set */
3141 case ANSI('A', '('):
3142 compatibility(VT100
);
3143 if (!term
->cfg
.no_remote_charset
)
3144 term
->cset_attr
[0] = CSET_GBCHR
;
3146 case ANSI('B', '('):
3147 compatibility(VT100
);
3148 if (!term
->cfg
.no_remote_charset
)
3149 term
->cset_attr
[0] = CSET_ASCII
;
3151 case ANSI('0', '('):
3152 compatibility(VT100
);
3153 if (!term
->cfg
.no_remote_charset
)
3154 term
->cset_attr
[0] = CSET_LINEDRW
;
3156 case ANSI('U', '('):
3157 compatibility(OTHER
);
3158 if (!term
->cfg
.no_remote_charset
)
3159 term
->cset_attr
[0] = CSET_SCOACS
;
3161 /* G1D4: G1-designate 94-set */
3162 case ANSI('A', ')'):
3163 compatibility(VT100
);
3164 if (!term
->cfg
.no_remote_charset
)
3165 term
->cset_attr
[1] = CSET_GBCHR
;
3167 case ANSI('B', ')'):
3168 compatibility(VT100
);
3169 if (!term
->cfg
.no_remote_charset
)
3170 term
->cset_attr
[1] = CSET_ASCII
;
3172 case ANSI('0', ')'):
3173 compatibility(VT100
);
3174 if (!term
->cfg
.no_remote_charset
)
3175 term
->cset_attr
[1] = CSET_LINEDRW
;
3177 case ANSI('U', ')'):
3178 compatibility(OTHER
);
3179 if (!term
->cfg
.no_remote_charset
)
3180 term
->cset_attr
[1] = CSET_SCOACS
;
3182 /* DOCS: Designate other coding system */
3183 case ANSI('8', '%'): /* Old Linux code */
3184 case ANSI('G', '%'):
3185 compatibility(OTHER
);
3186 if (!term
->cfg
.no_remote_charset
)
3189 case ANSI('@', '%'):
3190 compatibility(OTHER
);
3191 if (!term
->cfg
.no_remote_charset
)
3197 term
->termstate
= TOPLEVEL
; /* default */
3199 if (term
->esc_nargs
<= ARGS_MAX
) {
3200 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
3201 term
->esc_args
[term
->esc_nargs
- 1] = 0;
3202 term
->esc_args
[term
->esc_nargs
- 1] =
3203 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
3205 term
->termstate
= SEEN_CSI
;
3206 } else if (c
== ';') {
3207 if (++term
->esc_nargs
<= ARGS_MAX
)
3208 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
3209 term
->termstate
= SEEN_CSI
;
3210 } else if (c
< '@') {
3211 if (term
->esc_query
)
3212 term
->esc_query
= -1;
3214 term
->esc_query
= TRUE
;
3216 term
->esc_query
= c
;
3217 term
->termstate
= SEEN_CSI
;
3219 switch (ANSI(c
, term
->esc_query
)) {
3220 case 'A': /* CUU: move up N lines */
3221 move(term
, term
->curs
.x
,
3222 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3223 seen_disp_event(term
);
3225 case 'e': /* VPR: move down N lines */
3226 compatibility(ANSI
);
3228 case 'B': /* CUD: Cursor down */
3229 move(term
, term
->curs
.x
,
3230 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3231 seen_disp_event(term
);
3233 case ANSI('c', '>'): /* DA: report xterm version */
3234 compatibility(OTHER
);
3235 /* this reports xterm version 136 so that VIM can
3236 use the drag messages from the mouse reporting */
3238 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
3240 case 'a': /* HPR: move right N cols */
3241 compatibility(ANSI
);
3243 case 'C': /* CUF: Cursor right */
3244 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
3246 seen_disp_event(term
);
3248 case 'D': /* CUB: move left N cols */
3249 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
3251 seen_disp_event(term
);
3253 case 'E': /* CNL: move down N lines and CR */
3254 compatibility(ANSI
);
3256 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3257 seen_disp_event(term
);
3259 case 'F': /* CPL: move up N lines and CR */
3260 compatibility(ANSI
);
3262 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3263 seen_disp_event(term
);
3266 case '`': /* HPA: set horizontal posn */
3267 compatibility(ANSI
);
3268 move(term
, def(term
->esc_args
[0], 1) - 1,
3270 seen_disp_event(term
);
3272 case 'd': /* VPA: set vertical posn */
3273 compatibility(ANSI
);
3274 move(term
, term
->curs
.x
,
3275 ((term
->dec_om ? term
->marg_t
: 0) +
3276 def(term
->esc_args
[0], 1) - 1),
3277 (term
->dec_om ?
2 : 0));
3278 seen_disp_event(term
);
3281 case 'f': /* HVP: set horz and vert posns at once */
3282 if (term
->esc_nargs
< 2)
3283 term
->esc_args
[1] = ARG_DEFAULT
;
3284 move(term
, def(term
->esc_args
[1], 1) - 1,
3285 ((term
->dec_om ? term
->marg_t
: 0) +
3286 def(term
->esc_args
[0], 1) - 1),
3287 (term
->dec_om ?
2 : 0));
3288 seen_disp_event(term
);
3290 case 'J': /* ED: erase screen or parts of it */
3292 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3295 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
3298 seen_disp_event(term
);
3300 case 'K': /* EL: erase line or parts of it */
3302 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3305 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
3307 seen_disp_event(term
);
3309 case 'L': /* IL: insert lines */
3310 compatibility(VT102
);
3311 if (term
->curs
.y
<= term
->marg_b
)
3312 scroll(term
, term
->curs
.y
, term
->marg_b
,
3313 -def(term
->esc_args
[0], 1), FALSE
);
3314 seen_disp_event(term
);
3316 case 'M': /* DL: delete lines */
3317 compatibility(VT102
);
3318 if (term
->curs
.y
<= term
->marg_b
)
3319 scroll(term
, term
->curs
.y
, term
->marg_b
,
3320 def(term
->esc_args
[0], 1),
3322 seen_disp_event(term
);
3324 case '@': /* ICH: insert chars */
3325 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3326 compatibility(VT102
);
3327 insch(term
, def(term
->esc_args
[0], 1));
3328 seen_disp_event(term
);
3330 case 'P': /* DCH: delete chars */
3331 compatibility(VT102
);
3332 insch(term
, -def(term
->esc_args
[0], 1));
3333 seen_disp_event(term
);
3335 case 'c': /* DA: terminal type query */
3336 compatibility(VT100
);
3337 /* This is the response for a VT102 */
3339 ldisc_send(term
->ldisc
, term
->id_string
,
3340 strlen(term
->id_string
), 0);
3342 case 'n': /* DSR: cursor position query */
3344 if (term
->esc_args
[0] == 6) {
3346 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
3348 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
3349 } else if (term
->esc_args
[0] == 5) {
3350 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
3354 case 'h': /* SM: toggle modes to high */
3356 compatibility(VT100
);
3359 for (i
= 0; i
< term
->esc_nargs
; i
++)
3360 toggle_mode(term
, term
->esc_args
[i
],
3361 term
->esc_query
, TRUE
);
3364 case 'i': /* MC: Media copy */
3366 compatibility(VT100
);
3368 if (term
->esc_nargs
!= 1) break;
3369 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
3370 term
->printing
= TRUE
;
3371 term
->only_printing
= !term
->esc_query
;
3372 term
->print_state
= 0;
3373 term_print_setup(term
);
3374 } else if (term
->esc_args
[0] == 4 &&
3376 term_print_finish(term
);
3380 case 'l': /* RM: toggle modes to low */
3382 compatibility(VT100
);
3385 for (i
= 0; i
< term
->esc_nargs
; i
++)
3386 toggle_mode(term
, term
->esc_args
[i
],
3387 term
->esc_query
, FALSE
);
3390 case 'g': /* TBC: clear tabs */
3391 compatibility(VT100
);
3392 if (term
->esc_nargs
== 1) {
3393 if (term
->esc_args
[0] == 0) {
3394 term
->tabs
[term
->curs
.x
] = FALSE
;
3395 } else if (term
->esc_args
[0] == 3) {
3397 for (i
= 0; i
< term
->cols
; i
++)
3398 term
->tabs
[i
] = FALSE
;
3402 case 'r': /* DECSTBM: set scroll margins */
3403 compatibility(VT100
);
3404 if (term
->esc_nargs
<= 2) {
3406 top
= def(term
->esc_args
[0], 1) - 1;
3407 bot
= (term
->esc_nargs
<= 1
3408 || term
->esc_args
[1] == 0 ?
3410 def(term
->esc_args
[1], term
->rows
)) - 1;
3411 if (bot
>= term
->rows
)
3412 bot
= term
->rows
- 1;
3413 /* VTTEST Bug 9 - if region is less than 2 lines
3414 * don't change region.
3416 if (bot
- top
> 0) {
3421 * I used to think the cursor should be
3422 * placed at the top of the newly marginned
3423 * area. Apparently not: VMS TPU falls over
3426 * Well actually it should for
3429 term
->curs
.y
= (term
->dec_om ?
3431 seen_disp_event(term
);
3435 case 'm': /* SGR: set graphics rendition */
3438 * A VT100 without the AVO only had one
3439 * attribute, either underline or
3440 * reverse video depending on the
3441 * cursor type, this was selected by
3445 * This is sometimes DIM, eg on the
3448 * This is sometimes INVIS various ANSI.
3450 * This like 22 disables BOLD, DIM and INVIS
3452 * The ANSI colours appear on any
3453 * terminal that has colour (obviously)
3454 * but the interaction between sgr0 and
3455 * the colours varies but is usually
3456 * related to the background colour
3457 * erase item. The interaction between
3458 * colour attributes and the mono ones
3459 * is also very implementation
3462 * The 39 and 49 attributes are likely
3463 * to be unimplemented.
3466 for (i
= 0; i
< term
->esc_nargs
; i
++) {
3467 switch (def(term
->esc_args
[i
], 0)) {
3468 case 0: /* restore defaults */
3469 term
->curr_attr
= term
->default_attr
;
3471 case 1: /* enable bold */
3472 compatibility(VT100AVO
);
3473 term
->curr_attr
|= ATTR_BOLD
;
3475 case 21: /* (enable double underline) */
3476 compatibility(OTHER
);
3477 case 4: /* enable underline */
3478 compatibility(VT100AVO
);
3479 term
->curr_attr
|= ATTR_UNDER
;
3481 case 5: /* enable blink */
3482 compatibility(VT100AVO
);
3483 term
->curr_attr
|= ATTR_BLINK
;
3485 case 6: /* SCO light bkgrd */
3486 compatibility(SCOANSI
);
3487 term
->blink_is_real
= FALSE
;
3488 term
->curr_attr
|= ATTR_BLINK
;
3489 term_schedule_tblink(term
);
3491 case 7: /* enable reverse video */
3492 term
->curr_attr
|= ATTR_REVERSE
;
3494 case 10: /* SCO acs off */
3495 compatibility(SCOANSI
);
3496 if (term
->cfg
.no_remote_charset
) break;
3497 term
->sco_acs
= 0; break;
3498 case 11: /* SCO acs on */
3499 compatibility(SCOANSI
);
3500 if (term
->cfg
.no_remote_charset
) break;
3501 term
->sco_acs
= 1; break;
3502 case 12: /* SCO acs on, |0x80 */
3503 compatibility(SCOANSI
);
3504 if (term
->cfg
.no_remote_charset
) break;
3505 term
->sco_acs
= 2; break;
3506 case 22: /* disable bold */
3507 compatibility2(OTHER
, VT220
);
3508 term
->curr_attr
&= ~ATTR_BOLD
;
3510 case 24: /* disable underline */
3511 compatibility2(OTHER
, VT220
);
3512 term
->curr_attr
&= ~ATTR_UNDER
;
3514 case 25: /* disable blink */
3515 compatibility2(OTHER
, VT220
);
3516 term
->curr_attr
&= ~ATTR_BLINK
;
3518 case 27: /* disable reverse video */
3519 compatibility2(OTHER
, VT220
);
3520 term
->curr_attr
&= ~ATTR_REVERSE
;
3531 term
->curr_attr
&= ~ATTR_FGMASK
;
3533 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3543 /* aixterm-style bright foreground */
3544 term
->curr_attr
&= ~ATTR_FGMASK
;
3546 ((term
->esc_args
[i
] - 90 + 8)
3549 case 39: /* default-foreground */
3550 term
->curr_attr
&= ~ATTR_FGMASK
;
3551 term
->curr_attr
|= ATTR_DEFFG
;
3562 term
->curr_attr
&= ~ATTR_BGMASK
;
3564 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3574 /* aixterm-style bright background */
3575 term
->curr_attr
&= ~ATTR_BGMASK
;
3577 ((term
->esc_args
[i
] - 100 + 8)
3580 case 49: /* default-background */
3581 term
->curr_attr
&= ~ATTR_BGMASK
;
3582 term
->curr_attr
|= ATTR_DEFBG
;
3584 case 38: /* xterm 256-colour mode */
3585 if (i
+2 < term
->esc_nargs
&&
3586 term
->esc_args
[i
+1] == 5) {
3587 term
->curr_attr
&= ~ATTR_FGMASK
;
3589 ((term
->esc_args
[i
+2] & 0xFF)
3594 case 48: /* xterm 256-colour mode */
3595 if (i
+2 < term
->esc_nargs
&&
3596 term
->esc_args
[i
+1] == 5) {
3597 term
->curr_attr
&= ~ATTR_BGMASK
;
3599 ((term
->esc_args
[i
+2] & 0xFF)
3606 set_erase_char(term
);
3609 case 's': /* save cursor */
3610 save_cursor(term
, TRUE
);
3612 case 'u': /* restore cursor */
3613 save_cursor(term
, FALSE
);
3614 seen_disp_event(term
);
3616 case 't': /* DECSLPP: set page size - ie window height */
3618 * VT340/VT420 sequence DECSLPP, DEC only allows values
3619 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3620 * illegal values (eg first arg 1..9) for window changing
3623 if (term
->esc_nargs
<= 1
3624 && (term
->esc_args
[0] < 1 ||
3625 term
->esc_args
[0] >= 24)) {
3626 compatibility(VT340TEXT
);
3627 if (!term
->cfg
.no_remote_resize
)
3628 request_resize(term
->frontend
, term
->cols
,
3629 def(term
->esc_args
[0], 24));
3631 } else if (term
->esc_nargs
>= 1 &&
3632 term
->esc_args
[0] >= 1 &&
3633 term
->esc_args
[0] < 24) {
3634 compatibility(OTHER
);
3636 switch (term
->esc_args
[0]) {
3640 set_iconic(term
->frontend
, FALSE
);
3643 set_iconic(term
->frontend
, TRUE
);
3646 if (term
->esc_nargs
>= 3) {
3647 if (!term
->cfg
.no_remote_resize
)
3648 move_window(term
->frontend
,
3649 def(term
->esc_args
[1], 0),
3650 def(term
->esc_args
[2], 0));
3654 /* We should resize the window to a given
3655 * size in pixels here, but currently our
3656 * resizing code isn't healthy enough to
3661 set_zorder(term
->frontend
, TRUE
);
3664 /* move to bottom */
3665 set_zorder(term
->frontend
, FALSE
);
3668 refresh_window(term
->frontend
);
3671 if (term
->esc_nargs
>= 3) {
3672 if (!term
->cfg
.no_remote_resize
)
3673 request_resize(term
->frontend
,
3674 def(term
->esc_args
[2], term
->cfg
.width
),
3675 def(term
->esc_args
[1], term
->cfg
.height
));
3679 if (term
->esc_nargs
>= 2)
3680 set_zoomed(term
->frontend
,
3686 ldisc_send(term
->ldisc
,
3687 is_iconic(term
->frontend
) ?
3688 "\033[1t" : "\033[2t", 4, 0);
3692 get_window_pos(term
->frontend
, &x
, &y
);
3693 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3694 ldisc_send(term
->ldisc
, buf
, len
, 0);
3699 get_window_pixels(term
->frontend
, &x
, &y
);
3700 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
3701 ldisc_send(term
->ldisc
, buf
, len
, 0);
3706 len
= sprintf(buf
, "\033[8;%d;%dt",
3707 term
->rows
, term
->cols
);
3708 ldisc_send(term
->ldisc
, buf
, len
, 0);
3713 * Hmmm. Strictly speaking we
3714 * should return `the size of the
3715 * screen in characters', but
3716 * that's not easy: (a) window
3717 * furniture being what it is it's
3718 * hard to compute, and (b) in
3719 * resize-font mode maximising the
3720 * window wouldn't change the
3721 * number of characters. *shrug*. I
3722 * think we'll ignore it for the
3723 * moment and see if anyone
3724 * complains, and then ask them
3725 * what they would like it to do.
3730 !term
->cfg
.no_remote_qtitle
) {
3731 p
= get_window_title(term
->frontend
, TRUE
);
3733 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3734 ldisc_send(term
->ldisc
, p
, len
, 0);
3735 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3740 !term
->cfg
.no_remote_qtitle
) {
3741 p
= get_window_title(term
->frontend
,FALSE
);
3743 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3744 ldisc_send(term
->ldisc
, p
, len
, 0);
3745 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3751 case 'S': /* SU: Scroll up */
3752 compatibility(SCOANSI
);
3753 scroll(term
, term
->marg_t
, term
->marg_b
,
3754 def(term
->esc_args
[0], 1), TRUE
);
3755 term
->wrapnext
= FALSE
;
3756 seen_disp_event(term
);
3758 case 'T': /* SD: Scroll down */
3759 compatibility(SCOANSI
);
3760 scroll(term
, term
->marg_t
, term
->marg_b
,
3761 -def(term
->esc_args
[0], 1), TRUE
);
3762 term
->wrapnext
= FALSE
;
3763 seen_disp_event(term
);
3765 case ANSI('|', '*'): /* DECSNLS */
3767 * Set number of lines on screen
3768 * VT420 uses VGA like hardware and can
3769 * support any size in reasonable range
3770 * (24..49 AIUI) with no default specified.
3772 compatibility(VT420
);
3773 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3774 if (!term
->cfg
.no_remote_resize
)
3775 request_resize(term
->frontend
, term
->cols
,
3776 def(term
->esc_args
[0],
3781 case ANSI('|', '$'): /* DECSCPP */
3783 * Set number of columns per page
3784 * Docs imply range is only 80 or 132, but
3787 compatibility(VT340TEXT
);
3788 if (term
->esc_nargs
<= 1) {
3789 if (!term
->cfg
.no_remote_resize
)
3790 request_resize(term
->frontend
,
3791 def(term
->esc_args
[0],
3792 term
->cfg
.width
), term
->rows
);
3796 case 'X': /* ECH: write N spaces w/o moving cursor */
3797 /* XXX VTTEST says this is vt220, vt510 manual
3799 compatibility(ANSIMIN
);
3801 int n
= def(term
->esc_args
[0], 1);
3803 int p
= term
->curs
.x
;
3804 termline
*cline
= scrlineptr(term
->curs
.y
);
3806 if (n
> term
->cols
- term
->curs
.x
)
3807 n
= term
->cols
- term
->curs
.x
;
3808 cursplus
= term
->curs
;
3810 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3811 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
3812 check_selection(term
, term
->curs
, cursplus
);
3814 copy_termchar(cline
, p
++,
3816 seen_disp_event(term
);
3819 case 'x': /* DECREQTPARM: report terminal characteristics */
3820 compatibility(VT100
);
3823 int i
= def(term
->esc_args
[0], 0);
3824 if (i
== 0 || i
== 1) {
3825 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
3827 ldisc_send(term
->ldisc
, buf
, 20, 0);
3832 compatibility(OTHER
);
3834 int i
= def(term
->esc_args
[0], 1);
3835 pos old_curs
= term
->curs
;
3837 for(;i
>0 && term
->curs
.x
>0; i
--) {
3840 } while (term
->curs
.x
>0 &&
3841 !term
->tabs
[term
->curs
.x
]);
3843 check_selection(term
, old_curs
, term
->curs
);
3846 case ANSI('c', '='): /* Hide or Show Cursor */
3847 compatibility(SCOANSI
);
3848 switch(term
->esc_args
[0]) {
3849 case 0: /* hide cursor */
3850 term
->cursor_on
= FALSE
;
3852 case 1: /* restore cursor */
3853 term
->big_cursor
= FALSE
;
3854 term
->cursor_on
= TRUE
;
3856 case 2: /* block cursor */
3857 term
->big_cursor
= TRUE
;
3858 term
->cursor_on
= TRUE
;
3862 case ANSI('C', '='):
3864 * set cursor start on scanline esc_args[0] and
3865 * end on scanline esc_args[1].If you set
3866 * the bottom scan line to a value less than
3867 * the top scan line, the cursor will disappear.
3869 compatibility(SCOANSI
);
3870 if (term
->esc_nargs
>= 2) {
3871 if (term
->esc_args
[0] > term
->esc_args
[1])
3872 term
->cursor_on
= FALSE
;
3874 term
->cursor_on
= TRUE
;
3877 case ANSI('D', '='):
3878 compatibility(SCOANSI
);
3879 term
->blink_is_real
= FALSE
;
3880 term_schedule_tblink(term
);
3881 if (term
->esc_args
[0]>=1)
3882 term
->curr_attr
|= ATTR_BLINK
;
3884 term
->curr_attr
&= ~ATTR_BLINK
;
3886 case ANSI('E', '='):
3887 compatibility(SCOANSI
);
3888 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
3889 term_schedule_tblink(term
);
3891 case ANSI('F', '='): /* set normal foreground */
3892 compatibility(SCOANSI
);
3893 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3895 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3896 (term
->esc_args
[0] & 0x8)) <<
3898 term
->curr_attr
&= ~ATTR_FGMASK
;
3899 term
->curr_attr
|= colour
;
3900 term
->default_attr
&= ~ATTR_FGMASK
;
3901 term
->default_attr
|= colour
;
3904 case ANSI('G', '='): /* set normal background */
3905 compatibility(SCOANSI
);
3906 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3908 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3909 (term
->esc_args
[0] & 0x8)) <<
3911 term
->curr_attr
&= ~ATTR_BGMASK
;
3912 term
->curr_attr
|= colour
;
3913 term
->default_attr
&= ~ATTR_BGMASK
;
3914 term
->default_attr
|= colour
;
3917 case ANSI('L', '='):
3918 compatibility(SCOANSI
);
3919 term
->use_bce
= (term
->esc_args
[0] <= 0);
3920 set_erase_char(term
);
3922 case ANSI('p', '"'): /* DECSCL: set compat level */
3924 * Allow the host to make this emulator a
3925 * 'perfect' VT102. This first appeared in
3926 * the VT220, but we do need to get back to
3927 * PuTTY mode so I won't check it.
3929 * The arg in 40..42,50 are a PuTTY extension.
3930 * The 2nd arg, 8bit vs 7bit is not checked.
3932 * Setting VT102 mode should also change
3933 * the Fkeys to generate PF* codes as a
3934 * real VT102 has no Fkeys. The VT220 does
3935 * this, F11..F13 become ESC,BS,LF other
3936 * Fkeys send nothing.
3938 * Note ESC c will NOT change this!
3941 switch (term
->esc_args
[0]) {
3943 term
->compatibility_level
&= ~TM_VTXXX
;
3944 term
->compatibility_level
|= TM_VT102
;
3947 term
->compatibility_level
&= ~TM_VTXXX
;
3948 term
->compatibility_level
|= TM_VT220
;
3952 if (term
->esc_args
[0] > 60 &&
3953 term
->esc_args
[0] < 70)
3954 term
->compatibility_level
|= TM_VTXXX
;
3958 term
->compatibility_level
&= TM_VTXXX
;
3961 term
->compatibility_level
= TM_PUTTY
;
3964 term
->compatibility_level
= TM_SCOANSI
;
3968 term
->compatibility_level
= TM_PUTTY
;
3974 /* Change the response to CSI c */
3975 if (term
->esc_args
[0] == 50) {
3978 strcpy(term
->id_string
, "\033[?");
3979 for (i
= 1; i
< term
->esc_nargs
; i
++) {
3981 strcat(term
->id_string
, ";");
3982 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
3983 strcat(term
->id_string
, lbuf
);
3985 strcat(term
->id_string
, "c");
3988 /* Is this a good idea ?
3989 * Well we should do a soft reset at this point ...
3991 if (!has_compat(VT420
) && has_compat(VT100
)) {
3992 if (!term
->cfg
.no_remote_resize
) {
3993 if (term
->reset_132
)
3994 request_resize(132, 24);
3996 request_resize(80, 24);
4004 term
->osc_w
= FALSE
;
4006 case 'P': /* Linux palette sequence */
4007 term
->termstate
= SEEN_OSC_P
;
4008 term
->osc_strlen
= 0;
4010 case 'R': /* Linux palette reset */
4011 palette_reset(term
->frontend
);
4012 term_invalidate(term
);
4013 term
->termstate
= TOPLEVEL
;
4015 case 'W': /* word-set */
4016 term
->termstate
= SEEN_OSC_W
;
4029 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4033 * Grotty hack to support xterm and DECterm title
4034 * sequences concurrently.
4036 if (term
->esc_args
[0] == 2) {
4037 term
->esc_args
[0] = 1;
4040 /* else fall through */
4042 term
->termstate
= OSC_STRING
;
4043 term
->osc_strlen
= 0;
4048 * This OSC stuff is EVIL. It takes just one character to get into
4049 * sysline mode and it's not initially obvious how to get out.
4050 * So I've added CR and LF as string aborts.
4051 * This shouldn't effect compatibility as I believe embedded
4052 * control characters are supposed to be interpreted (maybe?)
4053 * and they don't display anything useful anyway.
4057 if (c
== '\012' || c
== '\015') {
4058 term
->termstate
= TOPLEVEL
;
4059 } else if (c
== 0234 || c
== '\007') {
4061 * These characters terminate the string; ST and BEL
4062 * terminate the sequence and trigger instant
4063 * processing of it, whereas ESC goes back to SEEN_ESC
4064 * mode unless it is followed by \, in which case it is
4065 * synonymous with ST in the first place.
4068 term
->termstate
= TOPLEVEL
;
4069 } else if (c
== '\033')
4070 term
->termstate
= OSC_MAYBE_ST
;
4071 else if (term
->osc_strlen
< OSC_STR_MAX
)
4072 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
4076 int max
= (term
->osc_strlen
== 0 ?
21 : 16);
4078 if ((int)c
>= '0' && (int)c
<= '9')
4080 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
4082 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
4085 term
->termstate
= TOPLEVEL
;
4088 term
->osc_string
[term
->osc_strlen
++] = val
;
4089 if (term
->osc_strlen
>= 7) {
4090 palette_set(term
->frontend
, term
->osc_string
[0],
4091 term
->osc_string
[1] * 16 + term
->osc_string
[2],
4092 term
->osc_string
[3] * 16 + term
->osc_string
[4],
4093 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
4094 term_invalidate(term
);
4095 term
->termstate
= TOPLEVEL
;
4111 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4114 term
->termstate
= OSC_STRING
;
4115 term
->osc_strlen
= 0;
4119 term
->termstate
= TOPLEVEL
;
4120 seen_disp_event(term
);
4123 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
4126 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
4129 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
4132 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
4135 * From the VT100 Manual
4136 * NOTE: The special graphics characters in the VT100
4137 * are different from those in the VT52
4139 * From VT102 manual:
4140 * 137 _ Blank - Same
4141 * 140 ` Reserved - Humm.
4142 * 141 a Solid rectangle - Similar
4143 * 142 b 1/ - Top half of fraction for the
4144 * 143 c 3/ - subscript numbers below.
4147 * 146 f Degrees - Same
4148 * 147 g Plus or minus - Same
4150 * 151 i Ellipsis (dots)
4153 * 154 l Bar at scan 0
4154 * 155 m Bar at scan 1
4155 * 156 n Bar at scan 2
4156 * 157 o Bar at scan 3 - Similar
4157 * 160 p Bar at scan 4 - Similar
4158 * 161 q Bar at scan 5 - Similar
4159 * 162 r Bar at scan 6 - Same
4160 * 163 s Bar at scan 7 - Similar
4175 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
4178 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
4181 move(term
, 0, 0, 0);
4184 if (term
->curs
.y
== 0)
4185 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
4186 else if (term
->curs
.y
> 0)
4188 term
->wrapnext
= FALSE
;
4191 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4195 erase_lots(term
, TRUE
, FALSE
, TRUE
);
4199 /* XXX Print cursor line */
4202 /* XXX Start controller mode */
4205 /* XXX Stop controller mode */
4209 term
->termstate
= VT52_Y1
;
4213 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
4216 term
->app_keypad_keys
= TRUE
;
4219 term
->app_keypad_keys
= FALSE
;
4222 /* XXX This should switch to VT100 mode not current or default
4223 * VT mode. But this will only have effect in a VT220+
4226 term
->vt52_mode
= FALSE
;
4227 term
->blink_is_real
= term
->cfg
.blinktext
;
4228 term_schedule_tblink(term
);
4232 /* XXX Enter auto print mode */
4235 /* XXX Exit auto print mode */
4238 /* XXX Print screen */
4244 /* compatibility(ATARI) */
4245 move(term
, 0, 0, 0);
4246 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4250 /* compatibility(ATARI) */
4251 if (term
->curs
.y
<= term
->marg_b
)
4252 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
4255 /* compatibility(ATARI) */
4256 if (term
->curs
.y
<= term
->marg_b
)
4257 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
4260 /* compatibility(ATARI) */
4261 term
->termstate
= VT52_FG
;
4264 /* compatibility(ATARI) */
4265 term
->termstate
= VT52_BG
;
4268 /* compatibility(ATARI) */
4269 erase_lots(term
, FALSE
, TRUE
, FALSE
);
4273 /* compatibility(ATARI) */
4274 term
->cursor_on
= TRUE
;
4277 /* compatibility(ATARI) */
4278 term
->cursor_on
= FALSE
;
4280 /* case 'j': Save cursor position - broken on ST */
4281 /* case 'k': Restore cursor position */
4283 /* compatibility(ATARI) */
4284 erase_lots(term
, TRUE
, TRUE
, TRUE
);
4286 term
->wrapnext
= FALSE
;
4289 /* compatibility(ATARI) */
4290 erase_lots(term
, TRUE
, TRUE
, FALSE
);
4293 /* compatibility(ATARI) */
4294 term
->curr_attr
|= ATTR_REVERSE
;
4297 /* compatibility(ATARI) */
4298 term
->curr_attr
&= ~ATTR_REVERSE
;
4300 case 'v': /* wrap Autowrap on - Wyse style */
4301 /* compatibility(ATARI) */
4304 case 'w': /* Autowrap off */
4305 /* compatibility(ATARI) */
4310 /* compatibility(OTHER) */
4311 term
->vt52_bold
= FALSE
;
4312 term
->curr_attr
= ATTR_DEFAULT
;
4313 set_erase_char(term
);
4316 /* compatibility(VI50) */
4317 term
->curr_attr
|= ATTR_UNDER
;
4320 /* compatibility(VI50) */
4321 term
->curr_attr
&= ~ATTR_UNDER
;
4324 /* compatibility(VI50) */
4325 term
->vt52_bold
= TRUE
;
4326 term
->curr_attr
|= ATTR_BOLD
;
4329 /* compatibility(VI50) */
4330 term
->vt52_bold
= FALSE
;
4331 term
->curr_attr
&= ~ATTR_BOLD
;
4337 term
->termstate
= VT52_Y2
;
4338 move(term
, term
->curs
.x
, c
- ' ', 0);
4341 term
->termstate
= TOPLEVEL
;
4342 move(term
, c
- ' ', term
->curs
.y
, 0);
4347 term
->termstate
= TOPLEVEL
;
4348 term
->curr_attr
&= ~ATTR_FGMASK
;
4349 term
->curr_attr
&= ~ATTR_BOLD
;
4350 term
->curr_attr
|= (c
& 0xF) << ATTR_FGSHIFT
;
4351 set_erase_char(term
);
4354 term
->termstate
= TOPLEVEL
;
4355 term
->curr_attr
&= ~ATTR_BGMASK
;
4356 term
->curr_attr
&= ~ATTR_BLINK
;
4357 term
->curr_attr
|= (c
& 0xF) << ATTR_BGSHIFT
;
4358 set_erase_char(term
);
4361 default: break; /* placate gcc warning about enum use */
4363 if (term
->selstate
!= NO_SELECTION
) {
4364 pos cursplus
= term
->curs
;
4366 check_selection(term
, term
->curs
, cursplus
);
4370 term_print_flush(term
);
4371 if (term
->cfg
.logflush
)
4372 logflush(term
->logctx
);
4376 * To prevent having to run the reasonably tricky bidi algorithm
4377 * too many times, we maintain a cache of the last lineful of data
4378 * fed to the algorithm on each line of the display.
4380 static int term_bidi_cache_hit(Terminal
*term
, int line
,
4381 termchar
*lbefore
, int width
)
4385 if (!term
->pre_bidi_cache
)
4386 return FALSE
; /* cache doesn't even exist yet! */
4388 if (line
>= term
->bidi_cache_size
)
4389 return FALSE
; /* cache doesn't have this many lines */
4391 if (!term
->pre_bidi_cache
[line
].chars
)
4392 return FALSE
; /* cache doesn't contain _this_ line */
4394 if (term
->pre_bidi_cache
[line
].width
!= width
)
4395 return FALSE
; /* line is wrong width */
4397 for (i
= 0; i
< width
; i
++)
4398 if (!termchars_equal(term
->pre_bidi_cache
[line
].chars
+i
, lbefore
+i
))
4399 return FALSE
; /* line doesn't match cache */
4401 return TRUE
; /* it didn't match. */
4404 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
4405 termchar
*lafter
, bidi_char
*wcTo
,
4406 int width
, int size
)
4410 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
4411 int j
= term
->bidi_cache_size
;
4412 term
->bidi_cache_size
= line
+1;
4413 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
4414 term
->bidi_cache_size
,
4415 struct bidi_cache_entry
);
4416 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
4417 term
->bidi_cache_size
,
4418 struct bidi_cache_entry
);
4419 while (j
< term
->bidi_cache_size
) {
4420 term
->pre_bidi_cache
[j
].chars
=
4421 term
->post_bidi_cache
[j
].chars
= NULL
;
4422 term
->pre_bidi_cache
[j
].width
=
4423 term
->post_bidi_cache
[j
].width
= -1;
4424 term
->pre_bidi_cache
[j
].forward
=
4425 term
->post_bidi_cache
[j
].forward
= NULL
;
4426 term
->pre_bidi_cache
[j
].backward
=
4427 term
->post_bidi_cache
[j
].backward
= NULL
;
4432 sfree(term
->pre_bidi_cache
[line
].chars
);
4433 sfree(term
->post_bidi_cache
[line
].chars
);
4434 sfree(term
->post_bidi_cache
[line
].forward
);
4435 sfree(term
->post_bidi_cache
[line
].backward
);
4437 term
->pre_bidi_cache
[line
].width
= width
;
4438 term
->pre_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4439 term
->post_bidi_cache
[line
].width
= width
;
4440 term
->post_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4441 term
->post_bidi_cache
[line
].forward
= snewn(width
, int);
4442 term
->post_bidi_cache
[line
].backward
= snewn(width
, int);
4444 memcpy(term
->pre_bidi_cache
[line
].chars
, lbefore
, size
* TSIZE
);
4445 memcpy(term
->post_bidi_cache
[line
].chars
, lafter
, size
* TSIZE
);
4446 memset(term
->post_bidi_cache
[line
].forward
, 0, width
* sizeof(int));
4447 memset(term
->post_bidi_cache
[line
].backward
, 0, width
* sizeof(int));
4449 for (i
= 0; i
< width
; i
++) {
4450 int p
= wcTo
[i
].index
;
4452 assert(0 <= p
&& p
< width
);
4454 term
->post_bidi_cache
[line
].backward
[i
] = p
;
4455 term
->post_bidi_cache
[line
].forward
[p
] = i
;
4460 * Prepare the bidi information for a screen line. Returns the
4461 * transformed list of termchars, or NULL if no transformation at
4462 * all took place (because bidi is disabled). If return was
4463 * non-NULL, auxiliary information such as the forward and reverse
4464 * mappings of permutation position are available in
4465 * term->post_bidi_cache[scr_y].*.
4467 static termchar
*term_bidi_line(Terminal
*term
, struct termline
*ldata
,
4473 /* Do Arabic shaping and bidi. */
4474 if(!term
->cfg
.bidi
|| !term
->cfg
.arabicshaping
) {
4476 if (!term_bidi_cache_hit(term
, scr_y
, ldata
->chars
, term
->cols
)) {
4478 if (term
->wcFromTo_size
< term
->cols
) {
4479 term
->wcFromTo_size
= term
->cols
;
4480 term
->wcFrom
= sresize(term
->wcFrom
, term
->wcFromTo_size
,
4482 term
->wcTo
= sresize(term
->wcTo
, term
->wcFromTo_size
,
4486 for(it
=0; it
<term
->cols
; it
++)
4488 unsigned long uc
= (ldata
->chars
[it
].chr
);
4490 switch (uc
& CSET_MASK
) {
4492 if (!term
->cfg
.rawcnp
) {
4493 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4497 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4500 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4503 switch (uc
& CSET_MASK
) {
4505 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4508 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4512 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4514 term
->wcFrom
[it
].index
= it
;
4518 do_bidi(term
->wcFrom
, term
->cols
);
4520 /* this is saved iff done from inside the shaping */
4521 if(!term
->cfg
.bidi
&& term
->cfg
.arabicshaping
)
4522 for(it
=0; it
<term
->cols
; it
++)
4523 term
->wcTo
[it
] = term
->wcFrom
[it
];
4525 if(!term
->cfg
.arabicshaping
)
4526 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4528 if (term
->ltemp_size
< ldata
->size
) {
4529 term
->ltemp_size
= ldata
->size
;
4530 term
->ltemp
= sresize(term
->ltemp
, term
->ltemp_size
,
4534 memcpy(term
->ltemp
, ldata
->chars
, ldata
->size
* TSIZE
);
4536 for(it
=0; it
<term
->cols
; it
++)
4538 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4539 if (term
->ltemp
[it
].cc_next
)
4540 term
->ltemp
[it
].cc_next
-=
4541 it
- term
->wcTo
[it
].index
;
4543 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4544 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4546 term_bidi_cache_store(term
, scr_y
, ldata
->chars
,
4547 term
->ltemp
, term
->wcTo
,
4548 term
->cols
, ldata
->size
);
4550 lchars
= term
->ltemp
;
4552 lchars
= term
->post_bidi_cache
[scr_y
].chars
;
4562 * Given a context, update the window. Out of paranoia, we don't
4563 * allow WM_PAINT responses to do scrolling optimisations.
4565 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
4567 int i
, j
, our_curs_y
, our_curs_x
;
4572 #ifdef OPTIMISE_SCROLL
4573 struct scrollregion
*sr
;
4574 #endif /* OPTIMISE_SCROLL */
4578 ch
= snewn(chlen
, wchar_t);
4580 newline
= snewn(term
->cols
, termchar
);
4582 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
4585 * screen array, disptop, scrtop,
4587 * cfg.blinkpc, blink_is_real, tblinker,
4588 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4591 /* Has the cursor position or type changed ? */
4592 if (term
->cursor_on
) {
4593 if (term
->has_focus
) {
4594 if (term
->cblinker
|| !term
->cfg
.blink_cur
)
4595 cursor
= TATTR_ACTCURS
;
4599 cursor
= TATTR_PASCURS
;
4601 cursor
|= TATTR_RIGHTCURS
;
4604 our_curs_y
= term
->curs
.y
- term
->disptop
;
4607 * Adjust the cursor position:
4609 * - in the case where it's resting on the right-hand half
4610 * of a CJK wide character. xterm's behaviour here,
4611 * which seems adequate to me, is to display the cursor
4612 * covering the _whole_ character, exactly as if it were
4613 * one space to the left.
4615 termline
*ldata
= lineptr(term
->curs
.y
);
4618 our_curs_x
= term
->curs
.x
;
4620 if ( (lchars
= term_bidi_line(term
, ldata
, our_curs_y
)) != NULL
) {
4621 our_curs_x
= term
->post_bidi_cache
[our_curs_y
].forward
[our_curs_x
];
4623 lchars
= ldata
->chars
;
4625 if (our_curs_x
> 0 &&
4626 lchars
[our_curs_x
].chr
== UCSWIDE
)
4633 * If the cursor is not where it was last time we painted, and
4634 * its previous position is visible on screen, invalidate its
4635 * previous position.
4637 if (term
->dispcursy
>= 0 &&
4638 (term
->curstype
!= cursor
||
4639 term
->dispcursy
!= our_curs_y
||
4640 term
->dispcursx
!= our_curs_x
)) {
4641 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
4644 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
4645 dispcurs
[-1].attr
|= ATTR_INVALID
;
4646 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
4647 dispcurs
[1].attr
|= ATTR_INVALID
;
4648 dispcurs
->attr
|= ATTR_INVALID
;
4652 term
->dispcursx
= term
->dispcursy
= -1;
4654 #ifdef OPTIMISE_SCROLL
4656 sr
= term
->scrollhead
;
4658 struct scrollregion
*next
= sr
->next
;
4659 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
4663 term
->scrollhead
= term
->scrolltail
= NULL
;
4664 #endif /* OPTIMISE_SCROLL */
4666 /* The normal screen data */
4667 for (i
= 0; i
< term
->rows
; i
++) {
4670 int dirty_line
, dirty_run
, selected
;
4671 unsigned long attr
= 0, cset
= 0;
4672 int updated_line
= 0;
4675 int last_run_dirty
= 0;
4676 int laststart
, dirtyrect
;
4679 scrpos
.y
= i
+ term
->disptop
;
4680 ldata
= lineptr(scrpos
.y
);
4682 /* Do Arabic shaping and bidi. */
4683 lchars
= term_bidi_line(term
, ldata
, i
);
4685 backward
= term
->post_bidi_cache
[i
].backward
;
4687 lchars
= ldata
->chars
;
4692 * First loop: work along the line deciding what we want
4693 * each character cell to look like.
4695 for (j
= 0; j
< term
->cols
; j
++) {
4696 unsigned long tattr
, tchar
;
4697 termchar
*d
= lchars
+ j
;
4698 scrpos
.x
= backward ? backward
[j
] : j
;
4703 if (!term
->cfg
.ansi_colour
)
4704 tattr
= (tattr
& ~(ATTR_FGMASK
| ATTR_BGMASK
)) |
4705 ATTR_DEFFG
| ATTR_DEFBG
;
4707 if (!term
->cfg
.xterm_256_colour
) {
4709 colour
= (tattr
& ATTR_FGMASK
) >> ATTR_FGSHIFT
;
4710 if (colour
>= 16 && colour
< 256)
4711 tattr
= (tattr
&~ ATTR_FGMASK
) | ATTR_DEFFG
;
4712 colour
= (tattr
& ATTR_BGMASK
) >> ATTR_BGSHIFT
;
4713 if (colour
>= 16 && colour
< 256)
4714 tattr
= (tattr
&~ ATTR_BGMASK
) | ATTR_DEFBG
;
4717 switch (tchar
& CSET_MASK
) {
4719 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4722 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4725 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4728 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4731 /* Video reversing things */
4732 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4733 if (term
->seltype
== LEXICOGRAPHIC
)
4734 selected
= (posle(term
->selstart
, scrpos
) &&
4735 poslt(scrpos
, term
->selend
));
4737 selected
= (posPle(term
->selstart
, scrpos
) &&
4738 posPlt(scrpos
, term
->selend
));
4742 ^ (selected ? ATTR_REVERSE
: 0));
4744 /* 'Real' blinking ? */
4745 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4746 if (term
->has_focus
&& term
->tblinker
) {
4747 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4749 tattr
&= ~ATTR_BLINK
;
4753 * Check the font we'll _probably_ be using to see if
4754 * the character is wide when we don't want it to be.
4756 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4757 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4758 (ATTR_NARROW
| DATTR_MASK
))) {
4759 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4760 tattr
|= ATTR_NARROW
;
4761 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4762 tattr
|= ATTR_NARROW
;
4764 if (i
== our_curs_y
&& j
== our_curs_x
) {
4766 term
->curstype
= cursor
;
4767 term
->dispcursx
= j
;
4768 term
->dispcursy
= i
;
4772 newline
[j
].attr
= tattr
;
4773 newline
[j
].chr
= tchar
;
4774 /* Combining characters are still read from lchars */
4775 newline
[j
].cc_next
= 0;
4779 * Now loop over the line again, noting where things have
4782 * During this loop, we keep track of where we last saw
4783 * DATTR_STARTRUN. Any mismatch automatically invalidates
4784 * _all_ of the containing run that was last printed: that
4785 * is, any rectangle that was drawn in one go in the
4786 * previous update should be either left completely alone
4787 * or overwritten in its entirety. This, along with the
4788 * expectation that front ends clip all text runs to their
4789 * bounding rectangle, should solve any possible problems
4790 * with fonts that overflow their character cells.
4794 for (j
= 0; j
< term
->cols
; j
++) {
4795 if (term
->disptext
[i
]->chars
[j
].attr
& DATTR_STARTRUN
) {
4800 if (term
->disptext
[i
]->chars
[j
].chr
!= newline
[j
].chr
||
4801 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
)
4802 != newline
[j
].attr
) {
4805 for (k
= laststart
; k
< j
; k
++)
4806 term
->disptext
[i
]->chars
[k
].attr
|= ATTR_INVALID
;
4812 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
4816 * Finally, loop once more and actually do the drawing.
4818 dirty_run
= dirty_line
= (ldata
->lattr
!=
4819 term
->disptext
[i
]->lattr
);
4820 term
->disptext
[i
]->lattr
= ldata
->lattr
;
4822 for (j
= 0; j
< term
->cols
; j
++) {
4823 unsigned long tattr
, tchar
;
4824 int break_run
, do_copy
;
4825 termchar
*d
= lchars
+ j
;
4827 tattr
= newline
[j
].attr
;
4828 tchar
= newline
[j
].chr
;
4830 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
4833 break_run
= ((tattr
^ attr
) & term
->attr_mask
) != 0;
4835 /* Special hack for VT100 Linedraw glyphs */
4836 if (tchar
>= 0x23BA && tchar
<= 0x23BD)
4840 * Separate out sequences of characters that have the
4841 * same CSET, if that CSET is a magic one.
4843 if (CSET_OF(tchar
) != cset
)
4847 * Break on both sides of any combined-character cell.
4849 if (d
->cc_next
!= 0 ||
4850 (j
> 0 && d
[-1].cc_next
!= 0))
4853 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
4854 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
4855 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
) == tattr
)
4857 else if (!dirty_run
&& ccount
== 1)
4862 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
4863 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
4865 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
4866 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
4874 cset
= CSET_OF(tchar
);
4875 if (term
->ucsdata
->dbcs_screenfont
)
4876 last_run_dirty
= dirty_run
;
4877 dirty_run
= dirty_line
;
4881 if (!termchars_equal_override(&term
->disptext
[i
]->chars
[j
],
4887 if (ccount
>= chlen
) {
4888 chlen
= ccount
+ 256;
4889 ch
= sresize(ch
, chlen
, wchar_t);
4891 ch
[ccount
++] = (wchar_t) tchar
;
4896 while (dd
->cc_next
) {
4897 unsigned long schar
;
4902 switch (schar
& CSET_MASK
) {
4904 schar
= term
->ucsdata
->unitab_line
[schar
& 0xFF];
4907 schar
= term
->ucsdata
->unitab_xterm
[schar
& 0xFF];
4910 schar
= term
->ucsdata
->unitab_scoacs
[schar
&0xFF];
4914 if (ccount
>= chlen
) {
4915 chlen
= ccount
+ 256;
4916 ch
= sresize(ch
, chlen
, wchar_t);
4918 ch
[ccount
++] = (wchar_t) schar
;
4921 attr
|= TATTR_COMBINING
;
4925 copy_termchar(term
->disptext
[i
], j
, d
);
4926 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
4927 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
4929 term
->disptext
[i
]->chars
[j
].attr
|= DATTR_STARTRUN
;
4932 /* If it's a wide char step along to the next one. */
4933 if (tattr
& ATTR_WIDE
) {
4934 if (++j
< term
->cols
) {
4937 * By construction above, the cursor should not
4938 * be on the right-hand half of this character.
4941 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
4942 if (!termchars_equal(&term
->disptext
[i
]->chars
[j
], d
))
4944 copy_termchar(term
->disptext
[i
], j
, d
);
4948 if (dirty_run
&& ccount
> 0) {
4949 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
4951 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
4952 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
4966 * Invalidate the whole screen so it will be repainted in full.
4968 void term_invalidate(Terminal
*term
)
4972 for (i
= 0; i
< term
->rows
; i
++)
4973 for (j
= 0; j
< term
->cols
; j
++)
4974 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
4976 term_schedule_update(term
);
4980 * Paint the window in response to a WM_PAINT message.
4982 void term_paint(Terminal
*term
, Context ctx
,
4983 int left
, int top
, int right
, int bottom
, int immediately
)
4986 if (left
< 0) left
= 0;
4987 if (top
< 0) top
= 0;
4988 if (right
>= term
->cols
) right
= term
->cols
-1;
4989 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
4991 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
4992 if ((term
->disptext
[i
]->lattr
& LATTR_MODE
) == LATTR_NORM
)
4993 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
4994 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
4996 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
4997 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5001 do_paint (term
, ctx
, FALSE
);
5003 term_schedule_update(term
);
5008 * Attempt to scroll the scrollback. The second parameter gives the
5009 * position we want to scroll to; the first is +1 to denote that
5010 * this position is relative to the beginning of the scrollback, -1
5011 * to denote it is relative to the end, and 0 to denote that it is
5012 * relative to the current position.
5014 void term_scroll(Terminal
*term
, int rel
, int where
)
5016 int sbtop
= -sblines(term
);
5017 #ifdef OPTIMISE_SCROLL
5018 int olddisptop
= term
->disptop
;
5020 #endif /* OPTIMISE_SCROLL */
5022 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
5023 if (term
->disptop
< sbtop
)
5024 term
->disptop
= sbtop
;
5025 if (term
->disptop
> 0)
5028 #ifdef OPTIMISE_SCROLL
5029 shift
= (term
->disptop
- olddisptop
);
5030 if (shift
< term
->rows
&& shift
> -term
->rows
)
5031 scroll_display(term
, 0, term
->rows
- 1, shift
);
5032 #endif /* OPTIMISE_SCROLL */
5036 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
5039 wchar_t *wbptr
; /* where next char goes within workbuf */
5041 int wblen
= 0; /* workbuf len */
5042 int buflen
; /* amount of memory allocated to workbuf */
5044 buflen
= 5120; /* Default size */
5045 workbuf
= snewn(buflen
, wchar_t);
5046 wbptr
= workbuf
; /* start filling here */
5047 old_top_x
= top
.x
; /* needed for rect==1 */
5049 while (poslt(top
, bottom
)) {
5051 termline
*ldata
= lineptr(top
.y
);
5055 * nlpos will point at the maximum position on this line we
5056 * should copy up to. So we start it at the end of the
5060 nlpos
.x
= term
->cols
;
5063 * ... move it backwards if there's unused space at the end
5064 * of the line (and also set `nl' if this is the case,
5065 * because in normal selection mode this means we need a
5066 * newline at the end)...
5068 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5069 while (IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
5070 !ldata
->chars
[nlpos
.x
- 1].cc_next
&&
5073 if (poslt(nlpos
, bottom
))
5075 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
5076 /* Ignore the last char on the line in a WRAPPED2 line. */
5081 * ... and then clip it to the terminal x coordinate if
5082 * we're doing rectangular selection. (In this case we
5083 * still did the above, so that copying e.g. the right-hand
5084 * column from a table doesn't fill with spaces on the
5088 if (nlpos
.x
> bottom
.x
)
5090 nl
= (top
.y
< bottom
.y
);
5093 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
5096 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
5098 wchar_t cbuf
[16], *p
;
5102 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
5108 int uc
= ldata
->chars
[x
].chr
;
5110 switch (uc
& CSET_MASK
) {
5112 if (!term
->cfg
.rawcnp
) {
5113 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5117 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5120 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5123 switch (uc
& CSET_MASK
) {
5125 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5128 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5132 set
= (uc
& CSET_MASK
);
5133 c
= (uc
& ~CSET_MASK
);
5137 if (DIRECT_FONT(uc
)) {
5138 if (c
>= ' ' && c
!= 0x7F) {
5142 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
5144 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
5145 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
5149 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
5153 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
5160 for (p
= cbuf
; *p
; p
++) {
5161 /* Enough overhead for trailing NL and nul */
5162 if (wblen
>= buflen
- 16) {
5164 workbuf
= sresize(workbuf
, buflen
, wchar_t);
5165 wbptr
= workbuf
+ wblen
;
5171 if (ldata
->chars
[x
].cc_next
)
5172 x
+= ldata
->chars
[x
].cc_next
;
5180 for (i
= 0; i
< sel_nl_sz
; i
++) {
5182 *wbptr
++ = sel_nl
[i
];
5186 top
.x
= rect ? old_top_x
: 0;
5190 #if SELECTION_NUL_TERMINATED
5194 write_clip(term
->frontend
, workbuf
, wblen
, desel
); /* transfer to clipbd */
5195 if (buflen
> 0) /* indicates we allocated this buffer */
5199 void term_copyall(Terminal
*term
)
5203 tree234
*screen
= term
->screen
;
5204 top
.y
= -sblines(term
);
5206 bottom
.y
= find_last_nonempty_line(term
, screen
);
5207 bottom
.x
= term
->cols
;
5208 clipme(term
, top
, bottom
, 0, TRUE
);
5212 * The wordness array is mainly for deciding the disposition of the
5213 * US-ASCII characters.
5215 static int wordtype(Terminal
*term
, int uc
)
5218 int start
, end
, ctype
;
5220 static const struct ucsword ucs_words
[] = {
5226 0x037e, 0x037e, 1}, /* Greek question mark */
5228 0x0387, 0x0387, 1}, /* Greek ano teleia */
5230 0x055a, 0x055f, 1}, /* Armenian punctuation */
5232 0x0589, 0x0589, 1}, /* Armenian full stop */
5234 0x0700, 0x070d, 1}, /* Syriac punctuation */
5236 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5238 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5240 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5242 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5244 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5246 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5248 0x2000, 0x200a, 0}, /* Various spaces */
5250 0x2070, 0x207f, 2}, /* superscript */
5252 0x2080, 0x208f, 2}, /* subscript */
5254 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5256 0x3000, 0x3000, 0}, /* ideographic space */
5258 0x3001, 0x3020, 1}, /* ideographic punctuation */
5260 0x303f, 0x309f, 3}, /* Hiragana */
5262 0x30a0, 0x30ff, 3}, /* Katakana */
5264 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5266 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5268 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5270 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5272 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5274 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5276 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5278 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5280 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5284 const struct ucsword
*wptr
;
5286 switch (uc
& CSET_MASK
) {
5288 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5291 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5294 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5297 switch (uc
& CSET_MASK
) {
5299 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5302 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5306 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5307 * fail as there's such a thing as a double width space. :-(
5309 if (term
->ucsdata
->dbcs_screenfont
&&
5310 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
5314 return term
->wordness
[uc
];
5316 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
5317 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
5325 * Spread the selection outwards according to the selection mode.
5327 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
5331 int topy
= -sblines(term
);
5333 ldata
= lineptr(p
.y
);
5335 switch (term
->selmode
) {
5338 * In this mode, every character is a separate unit, except
5339 * for runs of spaces at the end of a non-wrapping line.
5341 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5342 termchar
*q
= ldata
->chars
+ term
->cols
;
5343 while (q
> ldata
->chars
&&
5344 IS_SPACE_CHR(q
[-1].chr
) && !q
[-1].cc_next
)
5346 if (q
== ldata
->chars
+ term
->cols
)
5348 if (p
.x
>= q
- ldata
->chars
)
5349 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
5354 * In this mode, the units are maximal runs of characters
5355 * whose `wordness' has the same value.
5357 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
5360 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
5361 term
->cols
-1 : term
->cols
);
5362 if (p
.x
< maxcols
-1) {
5363 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
5368 if (ldata
->lattr
& LATTR_WRAPPED
) {
5370 ldata2
= lineptr(p
.y
+1);
5371 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
5388 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
5397 ldata2
= lineptr(p
.y
-1);
5398 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
5399 term
->cols
-1 : term
->cols
);
5400 if (ldata2
->lattr
& LATTR_WRAPPED
) {
5401 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
5419 * In this mode, every line is a unit.
5421 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
5429 static void sel_spread(Terminal
*term
)
5431 if (term
->seltype
== LEXICOGRAPHIC
) {
5432 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
5433 decpos(term
->selend
);
5434 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
5435 incpos(term
->selend
);
5439 void term_do_paste(Terminal
*term
)
5444 get_clip(term
->frontend
, &data
, &len
);
5445 if (data
&& len
> 0) {
5448 term_seen_key_event(term
); /* pasted data counts */
5450 if (term
->paste_buffer
)
5451 sfree(term
->paste_buffer
);
5452 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5453 term
->paste_buffer
= snewn(len
, wchar_t);
5456 while (p
< data
+ len
) {
5457 while (p
< data
+ len
&&
5458 !(p
<= data
+ len
- sel_nl_sz
&&
5459 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
5464 for (i
= 0; i
< p
- q
; i
++) {
5465 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
5469 if (p
<= data
+ len
- sel_nl_sz
&&
5470 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
5471 term
->paste_buffer
[term
->paste_len
++] = '\015';
5477 /* Assume a small paste will be OK in one go. */
5478 if (term
->paste_len
< 256) {
5480 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
5481 if (term
->paste_buffer
)
5482 sfree(term
->paste_buffer
);
5483 term
->paste_buffer
= 0;
5484 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5487 get_clip(term
->frontend
, NULL
, NULL
);
5490 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
5491 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
5495 int raw_mouse
= (term
->xterm_mouse
&&
5496 !term
->cfg
.no_mouse_rep
&&
5497 !(term
->cfg
.mouse_override
&& shift
));
5498 int default_seltype
;
5502 if (a
== MA_DRAG
&& !raw_mouse
)
5503 term_scroll(term
, 0, -1);
5505 if (y
>= term
->rows
) {
5507 if (a
== MA_DRAG
&& !raw_mouse
)
5508 term_scroll(term
, 0, +1);
5517 if (x
>= term
->cols
)
5520 selpoint
.y
= y
+ term
->disptop
;
5521 ldata
= lineptr(selpoint
.y
);
5523 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
5527 * Transform x through the bidi algorithm to find the _logical_
5528 * click point from the physical one.
5530 if (term_bidi_line(term
, ldata
, y
) != NULL
) {
5531 x
= term
->post_bidi_cache
[y
].backward
[x
];
5538 int encstate
= 0, r
, c
;
5545 encstate
= 0x20; /* left button down */
5556 case MBT_WHEEL_DOWN
:
5559 default: break; /* placate gcc warning about enum use */
5563 if (term
->xterm_mouse
== 1)
5569 term
->mouse_is_down
= 0;
5572 if (term
->mouse_is_down
== braw
)
5574 term
->mouse_is_down
= braw
;
5576 default: break; /* placate gcc warning about enum use */
5585 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
5586 ldisc_send(term
->ldisc
, abuf
, 6, 0);
5592 * Set the selection type (rectangular or normal) at the start
5593 * of a selection attempt, from the state of Alt.
5595 if (!alt
^ !term
->cfg
.rect_select
)
5596 default_seltype
= RECTANGULAR
;
5598 default_seltype
= LEXICOGRAPHIC
;
5600 if (term
->selstate
== NO_SELECTION
) {
5601 term
->seltype
= default_seltype
;
5604 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
5606 term
->selstate
= ABOUT_TO
;
5607 term
->seltype
= default_seltype
;
5608 term
->selanchor
= selpoint
;
5609 term
->selmode
= SM_CHAR
;
5610 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
5612 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
5613 term
->selstate
= DRAGGING
;
5614 term
->selstart
= term
->selanchor
= selpoint
;
5615 term
->selend
= term
->selstart
;
5616 incpos(term
->selend
);
5618 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
5619 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
5620 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
5622 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
5623 term
->selstate
== SELECTED
) {
5624 if (term
->seltype
== LEXICOGRAPHIC
) {
5626 * For normal selection, we extend by moving
5627 * whichever end of the current selection is closer
5630 if (posdiff(selpoint
, term
->selstart
) <
5631 posdiff(term
->selend
, term
->selstart
) / 2) {
5632 term
->selanchor
= term
->selend
;
5633 decpos(term
->selanchor
);
5635 term
->selanchor
= term
->selstart
;
5639 * For rectangular selection, we have a choice of
5640 * _four_ places to put selanchor and selpoint: the
5641 * four corners of the selection.
5643 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
5644 term
->selanchor
.x
= term
->selend
.x
-1;
5646 term
->selanchor
.x
= term
->selstart
.x
;
5648 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
5649 term
->selanchor
.y
= term
->selend
.y
;
5651 term
->selanchor
.y
= term
->selstart
.y
;
5653 term
->selstate
= DRAGGING
;
5655 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
5656 term
->selanchor
= selpoint
;
5657 term
->selstate
= DRAGGING
;
5658 if (term
->seltype
== LEXICOGRAPHIC
) {
5660 * For normal selection, we set (selstart,selend) to
5661 * (selpoint,selanchor) in some order.
5663 if (poslt(selpoint
, term
->selanchor
)) {
5664 term
->selstart
= selpoint
;
5665 term
->selend
= term
->selanchor
;
5666 incpos(term
->selend
);
5668 term
->selstart
= term
->selanchor
;
5669 term
->selend
= selpoint
;
5670 incpos(term
->selend
);
5674 * For rectangular selection, we may need to
5675 * interchange x and y coordinates (if the user has
5676 * dragged in the -x and +y directions, or vice versa).
5678 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
5679 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
5680 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
5681 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
5684 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
5686 if (term
->selstate
== DRAGGING
) {
5688 * We've completed a selection. We now transfer the
5689 * data to the clipboard.
5691 clipme(term
, term
->selstart
, term
->selend
,
5692 (term
->seltype
== RECTANGULAR
), FALSE
);
5693 term
->selstate
= SELECTED
;
5695 term
->selstate
= NO_SELECTION
;
5696 } else if (bcooked
== MBT_PASTE
5698 #if MULTICLICK_ONLY_EVENT
5699 || a
== MA_2CLK
|| a
== MA_3CLK
5702 request_paste(term
->frontend
);
5708 void term_key(Terminal
*term
, Key_Sym keysym
, wchar_t *text
, size_t tlen
,
5709 unsigned int modifiers
, unsigned int flags
)
5713 int prependesc
= FALSE
;
5717 fprintf(stderr
, "keysym = %d, %d chars:", keysym
, tlen
);
5718 for (i
= 0; i
< tlen
; i
++)
5719 fprintf(stderr
, " %04x", (unsigned)text
[i
]);
5720 fprintf(stderr
, "\n");
5724 if ((flags
& PKF_REPEAT
) && term
->repeat_off
)
5727 /* Currently, Meta always just prefixes everything with ESC. */
5728 if (modifiers
& PKM_META
)
5730 modifiers
&= ~PKM_META
;
5733 * Alt is only used for Alt+keypad, which isn't supported yet, so
5736 modifiers
&= ~PKM_ALT
;
5738 /* Standard local function keys */
5739 switch (modifiers
& (PKM_SHIFT
| PKM_CONTROL
)) {
5741 if (keysym
== PK_PAGEUP
)
5742 /* scroll up one page */;
5743 if (keysym
== PK_PAGEDOWN
)
5744 /* scroll down on page */;
5745 if (keysym
== PK_INSERT
)
5746 term_do_paste(term
);
5749 if (keysym
== PK_PAGEUP
)
5750 /* scroll up one line */;
5751 if (keysym
== PK_PAGEDOWN
)
5752 /* scroll down one line */;
5753 /* Control-Numlock for app-keypad mode switch */
5754 if (keysym
== PK_PF1
)
5755 term
->app_keypad_keys
^= 1;
5759 if (modifiers
& PKM_ALT
) {
5760 /* Alt+F4 (close) */
5761 /* Alt+Return (full screen) */
5762 /* Alt+Space (system menu) */
5765 if (keysym
== PK_NULL
&& (modifiers
& PKM_CONTROL
) && tlen
== 1 &&
5766 text
[0] >= 0x20 && text
[0] <= 0x7e) {
5767 /* ASCII chars + Control */
5768 if ((text
[0] >= 0x40 && text
[0] <= 0x5f) ||
5769 (text
[0] >= 0x61 && text
[0] <= 0x7a))
5773 * Control-2 should return ^@ (0x00), Control-6 should return
5774 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5775 * the DOS keyboard handling did it, and we have nothing better
5776 * to do with the key combo in question, we'll also map
5777 * Control-Backquote to ^\ (0x1C).
5780 case ' ': text
[0] = 0x00; break;
5781 case '-': text
[0] = 0x1f; break;
5782 case '/': text
[0] = 0x1f; break;
5783 case '2': text
[0] = 0x00; break;
5784 case '3': text
[0] = 0x1b; break;
5785 case '4': text
[0] = 0x1c; break;
5786 case '5': text
[0] = 0x1d; break;
5787 case '6': text
[0] = 0x1e; break;
5788 case '7': text
[0] = 0x1f; break;
5789 case '8': text
[0] = 0x7f; break;
5790 case '`': text
[0] = 0x1c; break;
5795 /* Nethack keypad */
5796 if (term
->cfg
.nethack_keypad
) {
5799 case PK_KP1
: c
= 'b'; break;
5800 case PK_KP2
: c
= 'j'; break;
5801 case PK_KP3
: c
= 'n'; break;
5802 case PK_KP4
: c
= 'h'; break;
5803 case PK_KP5
: c
= '.'; break;
5804 case PK_KP6
: c
= 'l'; break;
5805 case PK_KP7
: c
= 'y'; break;
5806 case PK_KP8
: c
= 'k'; break;
5807 case PK_KP9
: c
= 'u'; break;
5808 default: break; /* else gcc warns `enum value not used' */
5812 if (modifiers
& PKM_CONTROL
)
5814 else if (modifiers
& PKM_SHIFT
)
5822 /* Numeric Keypad */
5823 if (PK_ISKEYPAD(keysym
)) {
5827 * In VT400 mode, PFn always emits an escape sequence. In
5828 * Linux and tilde modes, this only happens in app keypad mode.
5830 if (term
->cfg
.funky_type
== FUNKY_VT400
||
5831 ((term
->cfg
.funky_type
== FUNKY_LINUX
||
5832 term
->cfg
.funky_type
== FUNKY_TILDE
) &&
5833 term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
)) {
5835 case PK_PF1
: xkey
= 'P'; break;
5836 case PK_PF2
: xkey
= 'Q'; break;
5837 case PK_PF3
: xkey
= 'R'; break;
5838 case PK_PF4
: xkey
= 'S'; break;
5839 default: break; /* else gcc warns `enum value not used' */
5842 if (term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
) {
5844 case PK_KP0
: xkey
= 'p'; break;
5845 case PK_KP1
: xkey
= 'q'; break;
5846 case PK_KP2
: xkey
= 'r'; break;
5847 case PK_KP3
: xkey
= 's'; break;
5848 case PK_KP4
: xkey
= 't'; break;
5849 case PK_KP5
: xkey
= 'u'; break;
5850 case PK_KP6
: xkey
= 'v'; break;
5851 case PK_KP7
: xkey
= 'w'; break;
5852 case PK_KP8
: xkey
= 'x'; break;
5853 case PK_KP9
: xkey
= 'y'; break;
5854 case PK_KPDECIMAL
: xkey
= 'n'; break;
5855 case PK_KPENTER
: xkey
= 'M'; break;
5856 default: break; /* else gcc warns `enum value not used' */
5858 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& tlen
> 0) {
5860 * xterm can't see the layout of the keypad, so it has
5861 * to rely on the X keysyms returned by the keys.
5862 * Hence, we look at the strings here, not the PuTTY
5863 * keysyms (which describe the layout).
5867 if (modifiers
& PKM_SHIFT
)
5872 case '/': xkey
= 'o'; break;
5873 case '*': xkey
= 'j'; break;
5874 case '-': xkey
= 'm'; break;
5878 * In all other modes, we try to retain the layout of
5879 * the DEC keypad in application mode.
5883 /* This key covers the '-' and ',' keys on a VT220 */
5884 if (modifiers
& PKM_SHIFT
)
5885 xkey
= 'm'; /* VT220 '-' */
5887 xkey
= 'l'; /* VT220 ',' */
5889 case PK_KPMINUS
: xkey
= 'm'; break;
5890 case PK_KPCOMMA
: xkey
= 'l'; break;
5891 default: break; /* else gcc warns `enum value not used' */
5896 if (term
->vt52_mode
) {
5897 if (xkey
>= 'P' && xkey
<= 'S')
5898 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5900 p
+= sprintf((char *) p
, "\x1B?%c", xkey
);
5902 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5905 /* Not in application mode -- treat the number pad as arrow keys? */
5906 if ((flags
& PKF_NUMLOCK
) == 0) {
5908 case PK_KP0
: keysym
= PK_INSERT
; break;
5909 case PK_KP1
: keysym
= PK_END
; break;
5910 case PK_KP2
: keysym
= PK_DOWN
; break;
5911 case PK_KP3
: keysym
= PK_PAGEDOWN
; break;
5912 case PK_KP4
: keysym
= PK_LEFT
; break;
5913 case PK_KP5
: keysym
= PK_REST
; break;
5914 case PK_KP6
: keysym
= PK_RIGHT
; break;
5915 case PK_KP7
: keysym
= PK_HOME
; break;
5916 case PK_KP8
: keysym
= PK_UP
; break;
5917 case PK_KP9
: keysym
= PK_PAGEUP
; break;
5918 default: break; /* else gcc warns `enum value not used' */
5923 /* Miscellaneous keys */
5930 *p
++ = (term
->cfg
.bksp_is_delete ?
0x7F : 0x08);
5931 else if (modifiers
== PKM_SHIFT
)
5932 /* We do the opposite of what is configured */
5933 *p
++ = (term
->cfg
.bksp_is_delete ?
0x08 : 0x7F);
5939 else if (modifiers
== PKM_SHIFT
)
5940 *p
++ = 0x1B, *p
++ = '[', *p
++ = 'Z';
5943 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5945 if (modifiers
== PKM_CONTROL
)
5950 case PK_KPENTER
: /* Odd keypad modes handled above */
5951 if (modifiers
== 0) {
5953 if (term
->cr_lf_return
)
5957 default: break; /* else gcc warns `enum value not used' */
5960 /* SCO function keys and editing keys */
5961 if (term
->cfg
.funky_type
== FUNKY_SCO
) {
5962 if (PK_ISFKEY(keysym
) && keysym
<= PK_F12
) {
5963 static char const codes
[] =
5964 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5965 int index
= keysym
- PK_F1
;
5967 if (modifiers
& PKM_SHIFT
) index
+= 12;
5968 if (modifiers
& PKM_CONTROL
) index
+= 24;
5969 p
+= sprintf((char *) p
, "\x1B[%c", codes
[index
]);
5972 if (PK_ISEDITING(keysym
)) {
5976 case PK_DELETE
: *p
++ = 0x7f; goto done
;
5977 case PK_HOME
: xkey
= 'H'; break;
5978 case PK_INSERT
: xkey
= 'L'; break;
5979 case PK_END
: xkey
= 'F'; break;
5980 case PK_PAGEUP
: xkey
= 'I'; break;
5981 case PK_PAGEDOWN
: xkey
= 'G'; break;
5982 default: break; /* else gcc warns `enum value not used' */
5984 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
5988 if (PK_ISEDITING(keysym
) && (modifiers
& PKM_SHIFT
) == 0) {
5991 if (term
->cfg
.funky_type
== FUNKY_XTERM
) {
5992 /* Xterm shuffles these keys, apparently. */
5994 case PK_HOME
: keysym
= PK_INSERT
; break;
5995 case PK_INSERT
: keysym
= PK_HOME
; break;
5996 case PK_DELETE
: keysym
= PK_END
; break;
5997 case PK_END
: keysym
= PK_PAGEUP
; break;
5998 case PK_PAGEUP
: keysym
= PK_DELETE
; break;
5999 case PK_PAGEDOWN
: keysym
= PK_PAGEDOWN
; break;
6000 default: break; /* else gcc warns `enum value not used' */
6005 if (term
->cfg
.rxvt_homeend
&&
6006 (keysym
== PK_HOME
|| keysym
== PK_END
)) {
6007 p
+= sprintf((char *) p
, keysym
== PK_HOME ?
"\x1B[H" : "\x1BOw");
6011 if (term
->vt52_mode
) {
6015 * A real VT52 doesn't have these, and a VT220 doesn't
6016 * send anything for them in VT52 mode.
6019 case PK_HOME
: xkey
= 'H'; break;
6020 case PK_INSERT
: xkey
= 'L'; break;
6021 case PK_DELETE
: xkey
= 'M'; break;
6022 case PK_END
: xkey
= 'E'; break;
6023 case PK_PAGEUP
: xkey
= 'I'; break;
6024 case PK_PAGEDOWN
: xkey
= 'G'; break;
6025 default: xkey
=0; break; /* else gcc warns `enum value not used'*/
6027 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6032 case PK_HOME
: code
= 1; break;
6033 case PK_INSERT
: code
= 2; break;
6034 case PK_DELETE
: code
= 3; break;
6035 case PK_END
: code
= 4; break;
6036 case PK_PAGEUP
: code
= 5; break;
6037 case PK_PAGEDOWN
: code
= 6; break;
6038 default: code
= 0; break; /* else gcc warns `enum value not used' */
6040 p
+= sprintf((char *) p
, "\x1B[%d~", code
);
6044 if (PK_ISFKEY(keysym
)) {
6045 /* Map Shift+F1-F10 to F11-F20 */
6046 if (keysym
>= PK_F1
&& keysym
<= PK_F10
&& (modifiers
& PKM_SHIFT
))
6048 if ((term
->vt52_mode
|| term
->cfg
.funky_type
== FUNKY_VT100P
) &&
6050 /* XXX This overrides the XTERM/VT52 mode below */
6052 if (keysym
>= PK_F6
) offt
++;
6053 if (keysym
>= PK_F12
) offt
++;
6054 p
+= sprintf((char *) p
, term
->vt52_mode ?
"\x1B%c" : "\x1BO%c",
6055 'P' + keysym
- PK_F1
- offt
);
6058 if (term
->cfg
.funky_type
== FUNKY_LINUX
&& keysym
<= PK_F5
) {
6059 p
+= sprintf((char *) p
, "\x1B[[%c", 'A' + keysym
- PK_F1
);
6062 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& keysym
<= PK_F4
) {
6063 if (term
->vt52_mode
)
6064 p
+= sprintf((char *) p
, "\x1B%c", 'P' + keysym
- PK_F1
);
6066 p
+= sprintf((char *) p
, "\x1BO%c", 'P' + keysym
- PK_F1
);
6069 p
+= sprintf((char *) p
, "\x1B[%d~", 11 + keysym
- PK_F1
);
6073 if (PK_ISCURSOR(keysym
)) {
6077 case PK_UP
: xkey
= 'A'; break;
6078 case PK_DOWN
: xkey
= 'B'; break;
6079 case PK_RIGHT
: xkey
= 'C'; break;
6080 case PK_LEFT
: xkey
= 'D'; break;
6081 case PK_REST
: xkey
= 'G'; break; /* centre key on number pad */
6082 default: xkey
= 0; break; /* else gcc warns `enum value not used' */
6084 if (term
->vt52_mode
)
6085 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6087 int app_flg
= (term
->app_cursor_keys
&& !term
->cfg
.no_applic_c
);
6089 /* Useful mapping of Ctrl-arrows */
6090 if (modifiers
== PKM_CONTROL
)
6094 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
6096 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6102 if (p
> output
|| tlen
> 0) {
6104 * Interrupt an ongoing paste. I'm not sure
6105 * this is sensible, but for the moment it's
6106 * preferable to having to faff about buffering
6112 * We need not bother about stdin backlogs
6113 * here, because in GUI PuTTY we can't do
6114 * anything about it anyway; there's no means
6115 * of asking Windows to hold off on KEYDOWN
6116 * messages. We _have_ to buffer everything
6119 term_seen_key_event(term
);
6123 fprintf(stderr
, "sending ESC\n");
6125 ldisc_send(term
->ldisc
, "\x1b", 1, 1);
6130 fprintf(stderr
, "sending %d bytes:", p
- output
);
6131 for (i
= 0; i
< p
- output
; i
++)
6132 fprintf(stderr
, " %02x", output
[i
]);
6133 fprintf(stderr
, "\n");
6135 ldisc_send(term
->ldisc
, output
, p
- output
, 1);
6136 } else if (tlen
> 0) {
6138 fprintf(stderr
, "sending %d unichars:", tlen
);
6139 for (i
= 0; i
< tlen
; i
++)
6140 fprintf(stderr
, " %04x", (unsigned) text
[i
]);
6141 fprintf(stderr
, "\n");
6143 luni_send(term
->ldisc
, text
, tlen
, 1);
6148 void term_nopaste(Terminal
*term
)
6150 if (term
->paste_len
== 0)
6152 sfree(term
->paste_buffer
);
6153 term
->paste_buffer
= NULL
;
6154 term
->paste_len
= 0;
6157 int term_paste_pending(Terminal
*term
)
6159 return term
->paste_len
!= 0;
6162 void term_paste(Terminal
*term
)
6164 long now
, paste_diff
;
6166 if (term
->paste_len
== 0)
6169 /* Don't wait forever to paste */
6170 if (term
->paste_hold
) {
6171 now
= GETTICKCOUNT();
6172 paste_diff
= now
- term
->last_paste
;
6173 if (paste_diff
>= 0 && paste_diff
< 450)
6176 term
->paste_hold
= 0;
6178 while (term
->paste_pos
< term
->paste_len
) {
6180 while (n
+ term
->paste_pos
< term
->paste_len
) {
6181 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
6185 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
6186 term
->paste_pos
+= n
;
6188 if (term
->paste_pos
< term
->paste_len
) {
6189 term
->paste_hold
= 1;
6193 sfree(term
->paste_buffer
);
6194 term
->paste_buffer
= NULL
;
6195 term
->paste_len
= 0;
6198 static void deselect(Terminal
*term
)
6200 term
->selstate
= NO_SELECTION
;
6201 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
6204 void term_deselect(Terminal
*term
)
6210 int term_ldisc(Terminal
*term
, int option
)
6212 if (option
== LD_ECHO
)
6213 return term
->term_echoing
;
6214 if (option
== LD_EDIT
)
6215 return term
->term_editing
;
6219 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
6221 bufchain_add(&term
->inbuf
, data
, len
);
6223 if (!term
->in_term_out
) {
6224 term
->in_term_out
= TRUE
;
6225 term_reset_cblink(term
);
6227 * During drag-selects, we do not process terminal input,
6228 * because the user will want the screen to hold still to
6231 if (term
->selstate
!= DRAGGING
)
6233 term
->in_term_out
= FALSE
;
6237 * term_out() always completely empties inbuf. Therefore,
6238 * there's no reason at all to return anything other than zero
6239 * from this function, because there _can't_ be a question of
6240 * the remote side needing to wait until term_out() has cleared
6243 * This is a slightly suboptimal way to deal with SSH-2 - in
6244 * principle, the window mechanism would allow us to continue
6245 * to accept data on forwarded ports and X connections even
6246 * while the terminal processing was going slowly - but we
6247 * can't do the 100% right thing without moving the terminal
6248 * processing into a separate thread, and that might hurt
6249 * portability. So we manage stdout buffering the old SSH-1 way:
6250 * if the terminal processing goes slowly, the whole SSH
6251 * connection stops accepting data until it's ready.
6253 * In practice, I can't imagine this causing serious trouble.
6258 void term_provide_logctx(Terminal
*term
, void *logctx
)
6260 term
->logctx
= logctx
;
6263 void term_set_focus(Terminal
*term
, int has_focus
)
6265 term
->has_focus
= has_focus
;
6266 term_schedule_cblink(term
);
6270 * Provide "auto" settings for remote tty modes, suitable for an
6271 * application with a terminal window.
6273 char *term_get_ttymode(Terminal
*term
, const char *mode
)
6276 if (strcmp(mode
, "ERASE") == 0) {
6277 val
= term
->cfg
.bksp_is_delete ?
"^?" : "^H";
6279 /* FIXME: perhaps we should set ONLCR based on cfg.lfhascr as well? */