14 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
15 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
16 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
17 #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
19 /* Product-order comparisons for rectangular block selection. */
20 #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
21 #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
23 #define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
24 #define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
28 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
29 #define CL_VT100 0x0002 /* VT100 */
30 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
31 #define CL_VT102 0x0008 /* VT102 */
32 #define CL_VT220 0x0010 /* VT220 */
33 #define CL_VT320 0x0020 /* VT320 */
34 #define CL_VT420 0x0040 /* VT420 */
35 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
36 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
37 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
38 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
39 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
41 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
42 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
43 #define TM_VT102 (TM_VT100AVO|CL_VT102)
44 #define TM_VT220 (TM_VT102|CL_VT220)
45 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
46 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
48 #define TM_PUTTY (0xFFFF)
50 #define UPDATE_DELAY ((TICKSPERSEC+49)/50)/* ticks to defer window update */
51 #define TBLINK_DELAY ((TICKSPERSEC*9+19)/20)/* ticks between text blinks*/
52 #define CBLINK_DELAY (CURSORBLINK) /* ticks between cursor blinks */
53 #define VBELL_DELAY (VBELL_TIMEOUT) /* visual bell timeout in ticks */
55 #define compatibility(x) \
56 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
57 term->termstate=TOPLEVEL; \
60 #define compatibility2(x,y) \
61 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
62 term->termstate=TOPLEVEL; \
66 #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
68 const char sco2ansicolour
[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
70 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
71 const wchar_t sel_nl
[] = SEL_NL
;
74 * Fetch the character at a particular position in a line array,
75 * for purposes of `wordtype'. The reason this isn't just a simple
76 * array reference is that if the character we find is UCSWIDE,
77 * then we must look one space further to the left.
79 #define UCSGET(a, x) \
80 ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr )
83 * Detect the various aliases of U+0020 SPACE.
85 #define IS_SPACE_CHR(chr) \
86 ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20))
91 #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0)
94 * Internal prototypes.
96 static void resizeline(Terminal
*, termline
*, int);
97 static termline
*lineptr(Terminal
*, int, int, int);
98 static void unlineptr(termline
*);
99 static void do_paint(Terminal
*, Context
, int);
100 static void erase_lots(Terminal
*, int, int, int);
101 static int find_last_nonempty_line(Terminal
*, tree234
*);
102 static void swap_screen(Terminal
*, int, int, int);
103 static void update_sbar(Terminal
*);
104 static void deselect(Terminal
*);
105 static void term_print_finish(Terminal
*);
106 static void scroll(Terminal
*, int, int, int, int);
107 #ifdef OPTIMISE_SCROLL
108 static void scroll_display(Terminal
*, int, int, int);
109 #endif /* OPTIMISE_SCROLL */
111 static termline
*newline(Terminal
*term
, int cols
, int bce
)
116 line
= snew(termline
);
117 line
->chars
= snewn(cols
, termchar
);
118 for (j
= 0; j
< cols
; j
++)
119 line
->chars
[j
] = (bce ? term
->erase_char
: term
->basic_erase_char
);
120 line
->cols
= line
->size
= cols
;
121 line
->lattr
= LATTR_NORM
;
122 line
->temporary
= FALSE
;
128 static void freeline(termline
*line
)
136 static void unlineptr(termline
*line
)
144 * Diagnostic function: verify that a termline has a correct
145 * combining character structure.
147 * This is a performance-intensive check, so it's no longer enabled
150 static void cc_check(termline
*line
)
152 unsigned char *flags
;
155 assert(line
->size
>= line
->cols
);
157 flags
= snewn(line
->size
, unsigned char);
159 for (i
= 0; i
< line
->size
; i
++)
160 flags
[i
] = (i
< line
->cols
);
162 for (i
= 0; i
< line
->cols
; i
++) {
164 while (line
->chars
[j
].cc_next
) {
165 j
+= line
->chars
[j
].cc_next
;
166 assert(j
>= line
->cols
&& j
< line
->size
);
175 assert(j
>= line
->cols
&& j
< line
->size
);
178 if (line
->chars
[j
].cc_next
)
179 j
+= line
->chars
[j
].cc_next
;
186 for (i
= 0; i
< line
->size
; i
++)
187 j
+= (flags
[i
] != 0);
189 assert(j
== line
->size
);
196 * Add a combining character to a character cell.
198 static void add_cc(termline
*line
, int col
, unsigned long chr
)
202 assert(col
>= 0 && col
< line
->cols
);
205 * Start by extending the cols array if the free list is empty.
207 if (!line
->cc_free
) {
209 line
->size
+= 16 + (line
->size
- line
->cols
) / 2;
210 line
->chars
= sresize(line
->chars
, line
->size
, termchar
);
212 while (n
< line
->size
) {
213 if (n
+1 < line
->size
)
214 line
->chars
[n
].cc_next
= 1;
216 line
->chars
[n
].cc_next
= 0;
222 * Now walk the cc list of the cell in question.
224 while (line
->chars
[col
].cc_next
)
225 col
+= line
->chars
[col
].cc_next
;
228 * `col' now points at the last cc currently in this cell; so
229 * we simply add another one.
231 newcc
= line
->cc_free
;
232 if (line
->chars
[newcc
].cc_next
)
233 line
->cc_free
= newcc
+ line
->chars
[newcc
].cc_next
;
236 line
->chars
[newcc
].cc_next
= 0;
237 line
->chars
[newcc
].chr
= chr
;
238 line
->chars
[col
].cc_next
= newcc
- col
;
246 * Clear the combining character list in a character cell.
248 static void clear_cc(termline
*line
, int col
)
250 int oldfree
, origcol
= col
;
252 assert(col
>= 0 && col
< line
->cols
);
254 if (!line
->chars
[col
].cc_next
)
255 return; /* nothing needs doing */
257 oldfree
= line
->cc_free
;
258 line
->cc_free
= col
+ line
->chars
[col
].cc_next
;
259 while (line
->chars
[col
].cc_next
)
260 col
+= line
->chars
[col
].cc_next
;
262 line
->chars
[col
].cc_next
= oldfree
- col
;
264 line
->chars
[col
].cc_next
= 0;
266 line
->chars
[origcol
].cc_next
= 0;
274 * Compare two character cells for equality. Special case required
275 * in do_paint() where we override what we expect the chr and attr
278 static int termchars_equal_override(termchar
*a
, termchar
*b
,
279 unsigned long bchr
, unsigned long battr
)
284 if ((a
->attr
&~ DATTR_MASK
) != (battr
&~ DATTR_MASK
))
286 while (a
->cc_next
|| b
->cc_next
) {
287 if (!a
->cc_next
|| !b
->cc_next
)
288 return FALSE
; /* one cc-list ends, other does not */
291 if (a
->chr
!= b
->chr
)
297 static int termchars_equal(termchar
*a
, termchar
*b
)
299 return termchars_equal_override(a
, b
, b
->chr
, b
->attr
);
303 * Copy a character cell. (Requires a pointer to the destination
304 * termline, so as to access its free list.)
306 static void copy_termchar(termline
*destline
, int x
, termchar
*src
)
308 clear_cc(destline
, x
);
310 destline
->chars
[x
] = *src
; /* copy everything except cc-list */
311 destline
->chars
[x
].cc_next
= 0; /* and make sure this is zero */
313 while (src
->cc_next
) {
315 add_cc(destline
, x
, src
->chr
);
324 * Move a character cell within its termline.
326 static void move_termchar(termline
*line
, termchar
*dest
, termchar
*src
)
328 /* First clear the cc list from the original char, just in case. */
329 clear_cc(line
, dest
- line
->chars
);
331 /* Move the character cell and adjust its cc_next. */
332 *dest
= *src
; /* copy everything except cc-list */
334 dest
->cc_next
= src
->cc_next
- (dest
-src
);
336 /* Ensure the original cell doesn't have a cc list. */
345 * Compress and decompress a termline into an RLE-based format for
346 * storing in scrollback. (Since scrollback almost never needs to
347 * be modified and exists in huge quantities, this is a sensible
348 * tradeoff, particularly since it allows us to continue adding
349 * features to the main termchar structure without proportionally
350 * bloating the terminal emulator's memory footprint unless those
351 * features are in constant use.)
357 static void add(struct buf
*b
, unsigned char c
)
359 if (b
->len
>= b
->size
) {
360 b
->size
= (b
->len
* 3 / 2) + 512;
361 b
->data
= sresize(b
->data
, b
->size
, unsigned char);
363 b
->data
[b
->len
++] = c
;
365 static int get(struct buf
*b
)
367 return b
->data
[b
->len
++];
369 static void makerle(struct buf
*b
, termline
*ldata
,
370 void (*makeliteral
)(struct buf
*b
, termchar
*c
,
371 unsigned long *state
))
373 int hdrpos
, hdrsize
, n
, prevlen
, prevpos
, thislen
, thispos
, prev2
;
374 termchar
*c
= ldata
->chars
;
375 unsigned long state
= 0, oldstate
;
382 prevlen
= prevpos
= 0;
387 makeliteral(b
, c
++, &state
);
388 thislen
= b
->len
- thispos
;
389 if (thislen
== prevlen
&&
390 !memcmp(b
->data
+ prevpos
, b
->data
+ thispos
, thislen
)) {
392 * This literal precisely matches the previous one.
393 * Turn it into a run if it's worthwhile.
395 * With one-byte literals, it costs us two bytes to
396 * encode a run, plus another byte to write the header
397 * to resume normal output; so a three-element run is
398 * neutral, and anything beyond that is unconditionally
399 * worthwhile. With two-byte literals or more, even a
402 if (thislen
> 1 || prev2
) {
406 * It's worth encoding a run. Start at prevpos,
407 * unless hdrsize==0 in which case we can back up
408 * another one and start by overwriting hdrpos.
411 hdrsize
--; /* remove the literal at prevpos */
415 prevpos
-= prevlen
;/* and possibly another one */
419 assert(prevpos
== hdrpos
+ 1);
421 b
->len
= prevpos
+prevlen
;
423 memmove(b
->data
+ prevpos
+1, b
->data
+ prevpos
, prevlen
);
425 b
->len
= prevpos
+prevlen
+1;
427 * Terminate the previous run of ordinary
430 assert(hdrsize
>= 1 && hdrsize
<= 128);
431 b
->data
[hdrpos
] = hdrsize
- 1;
434 runlen
= prev2 ?
3 : 2;
436 while (n
> 0 && runlen
< 129) {
440 makeliteral(b
, c
, &state
);
441 tmplen
= b
->len
- tmppos
;
443 if (tmplen
!= thislen
||
444 memcmp(b
->data
+ runpos
+1, b
->data
+ tmppos
, tmplen
)) {
446 break; /* run over */
451 assert(runlen
>= 2 && runlen
<= 129);
452 b
->data
[runpos
] = runlen
+ 0x80 - 2;
457 /* And ensure this run doesn't interfere with the next. */
458 prevlen
= prevpos
= 0;
464 * Just flag that the previous two literals were
465 * identical, in case we find a third identical one
466 * we want to turn into a run.
479 * This character isn't (yet) part of a run. Add it to
483 if (hdrsize
== 128) {
484 b
->data
[hdrpos
] = hdrsize
- 1;
488 prevlen
= prevpos
= 0;
497 assert(hdrsize
<= 128);
498 b
->data
[hdrpos
] = hdrsize
- 1;
503 static void makeliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
506 * My encoding for characters is UTF-8-like, in that it stores
507 * 7-bit ASCII in one byte and uses high-bit-set bytes as
508 * introducers to indicate a longer sequence. However, it's
509 * unlike UTF-8 in that it doesn't need to be able to
510 * resynchronise, and therefore I don't want to waste two bits
511 * per byte on having recognisable continuation characters.
512 * Also I don't want to rule out the possibility that I may one
513 * day use values 0x80000000-0xFFFFFFFF for interesting
514 * purposes, so unlike UTF-8 I need a full 32-bit range.
515 * Accordingly, here is my encoding:
517 * 00000000-0000007F: 0xxxxxxx (but see below)
518 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
519 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
520 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
521 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
523 * (`Z' is like `x' but is always going to be zero since the
524 * values I'm encoding don't go above 2^32. In principle the
525 * five-byte form of the encoding could extend to 2^35, and
526 * there could be six-, seven-, eight- and nine-byte forms as
527 * well to allow up to 64-bit values to be encoded. But that's
528 * completely unnecessary for these purposes!)
530 * The encoding as written above would be very simple, except
531 * that 7-bit ASCII can occur in several different ways in the
532 * terminal data; sometimes it crops up in the D800 page
533 * (CSET_ASCII) but at other times it's in the 0000 page (real
534 * Unicode). Therefore, this encoding is actually _stateful_:
535 * the one-byte encoding of 00-7F actually indicates `reuse the
536 * upper three bytes of the last character', and to encode an
537 * absolute value of 00-7F you need to use the two-byte form
540 if ((c
->chr
& ~0x7F) == *state
) {
541 add(b
, (unsigned char)(c
->chr
& 0x7F));
542 } else if (c
->chr
< 0x4000) {
543 add(b
, (unsigned char)(((c
->chr
>> 8) & 0x3F) | 0x80));
544 add(b
, (unsigned char)(c
->chr
& 0xFF));
545 } else if (c
->chr
< 0x200000) {
546 add(b
, (unsigned char)(((c
->chr
>> 16) & 0x1F) | 0xC0));
547 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
548 add(b
, (unsigned char)(c
->chr
& 0xFF));
549 } else if (c
->chr
< 0x10000000) {
550 add(b
, (unsigned char)(((c
->chr
>> 24) & 0x0F) | 0xE0));
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));
556 add(b
, (unsigned char)((c
->chr
>> 24) & 0xFF));
557 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
558 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
559 add(b
, (unsigned char)(c
->chr
& 0xFF));
561 *state
= c
->chr
& ~0xFF;
563 static void makeliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
566 * My encoding for attributes is 16-bit-granular and assumes
567 * that the top bit of the word is never required. I either
568 * store a two-byte value with the top bit clear (indicating
569 * just that value), or a four-byte value with the top bit set
570 * (indicating the same value with its top bit clear).
572 * However, first I permute the bits of the attribute value, so
573 * that the eight bits of colour (four in each of fg and bg)
574 * which are never non-zero unless xterm 256-colour mode is in
575 * use are placed higher up the word than everything else. This
576 * ensures that attribute values remain 16-bit _unless_ the
577 * user uses extended colour.
579 unsigned attr
, colourbits
;
583 assert(ATTR_BGSHIFT
> ATTR_FGSHIFT
);
585 colourbits
= (attr
>> (ATTR_BGSHIFT
+ 4)) & 0xF;
587 colourbits
|= (attr
>> (ATTR_FGSHIFT
+ 4)) & 0xF;
589 attr
= (((attr
>> (ATTR_BGSHIFT
+ 8)) << (ATTR_BGSHIFT
+ 4)) |
590 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
591 attr
= (((attr
>> (ATTR_FGSHIFT
+ 8)) << (ATTR_FGSHIFT
+ 4)) |
592 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
594 attr
|= (colourbits
<< (32-9));
597 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
598 add(b
, (unsigned char)(attr
& 0xFF));
600 add(b
, (unsigned char)(((attr
>> 24) & 0x7F) | 0x80));
601 add(b
, (unsigned char)((attr
>> 16) & 0xFF));
602 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
603 add(b
, (unsigned char)(attr
& 0xFF));
606 static void makeliteral_cc(struct buf
*b
, termchar
*c
, unsigned long *state
)
609 * For combining characters, I just encode a bunch of ordinary
610 * chars using makeliteral_chr, and terminate with a \0
611 * character (which I know won't come up as a combining char
614 * I don't use the stateful encoding in makeliteral_chr.
616 unsigned long zstate
;
625 makeliteral_chr(b
, c
, &zstate
);
630 makeliteral_chr(b
, &z
, &zstate
);
633 static termline
*decompressline(unsigned char *data
, int *bytes_used
);
635 static unsigned char *compressline(termline
*ldata
)
637 struct buf buffer
= { NULL
, 0, 0 }, *b
= &buffer
;
640 * First, store the column count, 7 bits at a time, least
641 * significant `digit' first, with the high bit set on all but
647 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
650 add(b
, (unsigned char)(n
));
654 * Next store the lattrs; same principle.
657 int n
= ldata
->lattr
;
659 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
662 add(b
, (unsigned char)(n
));
666 * Now we store a sequence of separate run-length encoded
667 * fragments, each containing exactly as many symbols as there
668 * are columns in the ldata.
670 * All of these have a common basic format:
672 * - a byte 00-7F indicates that X+1 literals follow it
673 * - a byte 80-FF indicates that a single literal follows it
674 * and expects to be repeated (X-0x80)+2 times.
676 * The format of the `literals' varies between the fragments.
678 makerle(b
, ldata
, makeliteral_chr
);
679 makerle(b
, ldata
, makeliteral_attr
);
680 makerle(b
, ldata
, makeliteral_cc
);
683 * Diagnostics: ensure that the compressed data really does
684 * decompress to the right thing.
686 * This is a bit performance-heavy for production code.
689 #ifndef CHECK_SB_COMPRESSION
695 #ifdef DIAGNOSTIC_SB_COMPRESSION
696 for (i
= 0; i
< b
->len
; i
++) {
697 printf(" %02x ", b
->data
[i
]);
702 dcl
= decompressline(b
->data
, &dused
);
703 assert(b
->len
== dused
);
704 assert(ldata
->cols
== dcl
->cols
);
705 assert(ldata
->lattr
== dcl
->lattr
);
706 for (i
= 0; i
< ldata
->cols
; i
++)
707 assert(termchars_equal(&ldata
->chars
[i
], &dcl
->chars
[i
]));
709 #ifdef DIAGNOSTIC_SB_COMPRESSION
710 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
711 ldata
->cols
, 4 * ldata
->cols
, dused
,
712 (double)dused
/ (4 * ldata
->cols
));
718 #endif /* TERM_CC_DIAGS */
721 * Trim the allocated memory so we don't waste any, and return.
723 return sresize(b
->data
, b
->len
, unsigned char);
726 static void readrle(struct buf
*b
, termline
*ldata
,
727 void (*readliteral
)(struct buf
*b
, termchar
*c
,
728 termline
*ldata
, unsigned long *state
))
731 unsigned long state
= 0;
733 while (n
< ldata
->cols
) {
739 int pos
= b
->len
, count
= hdr
+ 2 - 0x80;
741 assert(n
< ldata
->cols
);
743 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
747 /* Just a sequence of consecutive literals. */
751 assert(n
< ldata
->cols
);
752 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
758 assert(n
== ldata
->cols
);
760 static void readliteral_chr(struct buf
*b
, termchar
*c
, termline
*ldata
,
761 unsigned long *state
)
766 * 00000000-0000007F: 0xxxxxxx
767 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
768 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
769 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
770 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
775 c
->chr
= byte
| *state
;
776 } else if (byte
< 0xC0) {
777 c
->chr
= (byte
&~ 0xC0) << 8;
779 } else if (byte
< 0xE0) {
780 c
->chr
= (byte
&~ 0xE0) << 16;
781 c
->chr
|= get(b
) << 8;
783 } else if (byte
< 0xF0) {
784 c
->chr
= (byte
&~ 0xF0) << 24;
785 c
->chr
|= get(b
) << 16;
786 c
->chr
|= get(b
) << 8;
789 assert(byte
== 0xF0);
790 c
->chr
= get(b
) << 24;
791 c
->chr
|= get(b
) << 16;
792 c
->chr
|= get(b
) << 8;
795 *state
= c
->chr
& ~0xFF;
797 static void readliteral_attr(struct buf
*b
, termchar
*c
, termline
*ldata
,
798 unsigned long *state
)
800 unsigned val
, attr
, colourbits
;
812 colourbits
= (val
>> (32-9)) & 0xFF;
813 attr
= (val
& ((1<<(32-9))-1));
815 attr
= (((attr
>> (ATTR_FGSHIFT
+ 4)) << (ATTR_FGSHIFT
+ 8)) |
816 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
817 attr
= (((attr
>> (ATTR_BGSHIFT
+ 4)) << (ATTR_BGSHIFT
+ 8)) |
818 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
820 attr
|= (colourbits
>> 4) << (ATTR_BGSHIFT
+ 4);
821 attr
|= (colourbits
& 0xF) << (ATTR_FGSHIFT
+ 4);
825 static void readliteral_cc(struct buf
*b
, termchar
*c
, termline
*ldata
,
826 unsigned long *state
)
829 unsigned long zstate
;
830 int x
= c
- ldata
->chars
;
836 readliteral_chr(b
, &n
, ldata
, &zstate
);
839 add_cc(ldata
, x
, n
.chr
);
843 static termline
*decompressline(unsigned char *data
, int *bytes_used
)
845 int ncols
, byte
, shift
;
846 struct buf buffer
, *b
= &buffer
;
853 * First read in the column count.
858 ncols
|= (byte
& 0x7F) << shift
;
860 } while (byte
& 0x80);
863 * Now create the output termline.
865 ldata
= snew(termline
);
866 ldata
->chars
= snewn(ncols
, termchar
);
867 ldata
->cols
= ldata
->size
= ncols
;
868 ldata
->temporary
= TRUE
;
872 * We must set all the cc pointers in ldata->chars to 0 right
873 * now, so that cc diagnostics that verify the integrity of the
874 * whole line will make sense while we're in the middle of
879 for (i
= 0; i
< ldata
->cols
; i
++)
880 ldata
->chars
[i
].cc_next
= 0;
884 * Now read in the lattr.
886 ldata
->lattr
= shift
= 0;
889 ldata
->lattr
|= (byte
& 0x7F) << shift
;
891 } while (byte
& 0x80);
894 * Now we read in each of the RLE streams in turn.
896 readrle(b
, ldata
, readliteral_chr
);
897 readrle(b
, ldata
, readliteral_attr
);
898 readrle(b
, ldata
, readliteral_cc
);
900 /* Return the number of bytes read, for diagnostic purposes. */
902 *bytes_used
= b
->len
;
908 * Resize a line to make it `cols' columns wide.
910 static void resizeline(Terminal
*term
, termline
*line
, int cols
)
914 if (line
->cols
!= cols
) {
916 oldcols
= line
->cols
;
919 * This line is the wrong length, which probably means it
920 * hasn't been accessed since a resize. Resize it now.
922 * First, go through all the characters that will be thrown
923 * out in the resize (if we're shrinking the line) and
924 * return their cc lists to the cc free list.
926 for (i
= cols
; i
< oldcols
; i
++)
930 * If we're shrinking the line, we now bodily move the
931 * entire cc section from where it started to where it now
932 * needs to be. (We have to do this before the resize, so
933 * that the data we're copying is still there. However, if
934 * we're expanding, we have to wait until _after_ the
935 * resize so that the space we're copying into is there.)
938 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
939 (line
->size
- line
->cols
) * TSIZE
);
942 * Now do the actual resize, leaving the _same_ amount of
943 * cc space as there was to begin with.
945 line
->size
+= cols
- oldcols
;
946 line
->chars
= sresize(line
->chars
, line
->size
, TTYPE
);
950 * If we're expanding the line, _now_ we move the cc
954 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
955 (line
->size
- line
->cols
) * TSIZE
);
958 * Go through what's left of the original line, and adjust
959 * the first cc_next pointer in each list. (All the
960 * subsequent ones are still valid because they are
961 * relative offsets within the cc block.) Also do the same
962 * to the head of the cc_free list.
964 for (i
= 0; i
< oldcols
&& i
< cols
; i
++)
965 if (line
->chars
[i
].cc_next
)
966 line
->chars
[i
].cc_next
+= cols
- oldcols
;
968 line
->cc_free
+= cols
- oldcols
;
971 * And finally fill in the new space with erase chars. (We
972 * don't have to worry about cc lists here, because we
973 * _know_ the erase char doesn't have one.)
975 for (i
= oldcols
; i
< cols
; i
++)
976 line
->chars
[i
] = term
->basic_erase_char
;
985 * Get the number of lines in the scrollback.
987 static int sblines(Terminal
*term
)
989 int sblines
= count234(term
->scrollback
);
990 if (term
->cfg
.erase_to_scrollback
&&
991 term
->alt_which
&& term
->alt_screen
) {
992 sblines
+= term
->alt_sblines
;
998 * Retrieve a line of the screen or of the scrollback, according to
999 * whether the y coordinate is non-negative or negative
1002 static termline
*lineptr(Terminal
*term
, int y
, int lineno
, int screen
)
1009 whichtree
= term
->screen
;
1016 if (term
->cfg
.erase_to_scrollback
&&
1017 term
->alt_which
&& term
->alt_screen
) {
1018 altlines
= term
->alt_sblines
;
1020 if (y
< -altlines
) {
1021 whichtree
= term
->scrollback
;
1022 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
1024 whichtree
= term
->alt_screen
;
1025 treeindex
= y
+ term
->alt_sblines
;
1026 /* treeindex = y + count234(term->alt_screen); */
1029 if (whichtree
== term
->scrollback
) {
1030 unsigned char *cline
= index234(whichtree
, treeindex
);
1031 line
= decompressline(cline
, NULL
);
1033 line
= index234(whichtree
, treeindex
);
1036 /* We assume that we don't screw up and retrieve something out of range. */
1038 fatalbox("line==NULL in terminal.c\n"
1039 "lineno=%d y=%d w=%d h=%d\n"
1040 "count(scrollback=%p)=%d\n"
1041 "count(screen=%p)=%d\n"
1042 "count(alt=%p)=%d alt_sblines=%d\n"
1043 "whichtree=%p treeindex=%d\n\n"
1044 "Please contact <putty@projects.tartarus.org> "
1045 "and pass on the above information.",
1046 lineno
, y
, term
->cols
, term
->rows
,
1047 term
->scrollback
, count234(term
->scrollback
),
1048 term
->screen
, count234(term
->screen
),
1049 term
->alt_screen
, count234(term
->alt_screen
), term
->alt_sblines
,
1050 whichtree
, treeindex
);
1052 assert(line
!= NULL
);
1054 resizeline(term
, line
, term
->cols
);
1055 /* FIXME: should we sort the compressed scrollback out here? */
1060 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1061 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1063 static void term_schedule_tblink(Terminal
*term
);
1064 static void term_schedule_cblink(Terminal
*term
);
1066 static void term_timer(void *ctx
, long now
)
1068 Terminal
*term
= (Terminal
*)ctx
;
1071 if (term
->tblink_pending
&& now
- term
->next_tblink
>= 0) {
1072 term
->tblinker
= !term
->tblinker
;
1073 term
->tblink_pending
= FALSE
;
1074 term_schedule_tblink(term
);
1078 if (term
->cblink_pending
&& now
- term
->next_cblink
>= 0) {
1079 term
->cblinker
= !term
->cblinker
;
1080 term
->cblink_pending
= FALSE
;
1081 term_schedule_cblink(term
);
1085 if (term
->in_vbell
&& now
- term
->vbell_end
>= 0) {
1086 term
->in_vbell
= FALSE
;
1091 (term
->window_update_pending
&& now
- term
->next_update
>= 0))
1095 static void term_schedule_update(Terminal
*term
)
1097 if (!term
->window_update_pending
) {
1098 term
->window_update_pending
= TRUE
;
1099 term
->next_update
= schedule_timer(UPDATE_DELAY
, term_timer
, term
);
1104 * Call this whenever the terminal window state changes, to queue
1107 static void seen_disp_event(Terminal
*term
)
1109 term
->seen_disp_event
= TRUE
; /* for scrollback-reset-on-activity */
1110 term_schedule_update(term
);
1114 * Call when the terminal's blinking-text settings change, or when
1115 * a text blink has just occurred.
1117 static void term_schedule_tblink(Terminal
*term
)
1119 if (term
->blink_is_real
) {
1120 if (!term
->tblink_pending
)
1121 term
->next_tblink
= schedule_timer(TBLINK_DELAY
, term_timer
, term
);
1122 term
->tblink_pending
= TRUE
;
1124 term
->tblinker
= 1; /* reset when not in use */
1125 term
->tblink_pending
= FALSE
;
1130 * Likewise with cursor blinks.
1132 static void term_schedule_cblink(Terminal
*term
)
1134 if (term
->cfg
.blink_cur
&& term
->has_focus
) {
1135 if (!term
->cblink_pending
)
1136 term
->next_cblink
= schedule_timer(CBLINK_DELAY
, term_timer
, term
);
1137 term
->cblink_pending
= TRUE
;
1139 term
->cblinker
= 1; /* reset when not in use */
1140 term
->cblink_pending
= FALSE
;
1145 * Call to reset cursor blinking on new output.
1147 static void term_reset_cblink(Terminal
*term
)
1149 seen_disp_event(term
);
1151 term
->cblink_pending
= FALSE
;
1152 term_schedule_cblink(term
);
1156 * Call to begin a visual bell.
1158 static void term_schedule_vbell(Terminal
*term
, int already_started
,
1161 long ticks_already_gone
;
1163 if (already_started
)
1164 ticks_already_gone
= GETTICKCOUNT() - startpoint
;
1166 ticks_already_gone
= 0;
1168 if (ticks_already_gone
< VBELL_DELAY
) {
1169 term
->in_vbell
= TRUE
;
1170 term
->vbell_end
= schedule_timer(VBELL_DELAY
- ticks_already_gone
,
1173 term
->in_vbell
= FALSE
;
1178 * Set up power-on settings for the terminal.
1179 * If 'clear' is false, don't actually clear the primary screen, and
1180 * position the cursor below the last non-blank line (scrolling if
1183 static void power_on(Terminal
*term
, int clear
)
1185 term
->alt_x
= term
->alt_y
= 0;
1186 term
->savecurs
.x
= term
->savecurs
.y
= 0;
1187 term
->alt_savecurs
.x
= term
->alt_savecurs
.y
= 0;
1188 term
->alt_t
= term
->marg_t
= 0;
1189 if (term
->rows
!= -1)
1190 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1192 term
->alt_b
= term
->marg_b
= 0;
1193 if (term
->cols
!= -1) {
1195 for (i
= 0; i
< term
->cols
; i
++)
1196 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1198 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1199 term
->alt_ins
= term
->insert
= FALSE
;
1200 term
->alt_wnext
= term
->wrapnext
=
1201 term
->save_wnext
= term
->alt_save_wnext
= FALSE
;
1202 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1203 term
->alt_cset
= term
->cset
= term
->save_cset
= term
->alt_save_cset
= 0;
1204 term
->alt_utf
= term
->utf
= term
->save_utf
= term
->alt_save_utf
= 0;
1205 term
->utf_state
= 0;
1206 term
->alt_sco_acs
= term
->sco_acs
=
1207 term
->save_sco_acs
= term
->alt_save_sco_acs
= 0;
1208 term
->cset_attr
[0] = term
->cset_attr
[1] =
1209 term
->save_csattr
= term
->alt_save_csattr
= CSET_ASCII
;
1211 term
->in_vbell
= FALSE
;
1212 term
->cursor_on
= 1;
1213 term
->big_cursor
= 0;
1214 term
->default_attr
= term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
1215 term
->term_editing
= term
->term_echoing
= FALSE
;
1216 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
1217 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
1218 term
->use_bce
= term
->cfg
.bce
;
1219 term
->blink_is_real
= term
->cfg
.blinktext
;
1220 term
->erase_char
= term
->basic_erase_char
;
1221 term
->alt_which
= 0;
1222 term_print_finish(term
);
1225 for (i
= 0; i
< 256; i
++)
1226 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1229 swap_screen(term
, 1, FALSE
, FALSE
);
1230 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1231 swap_screen(term
, 0, FALSE
, FALSE
);
1233 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1234 term
->curs
.y
= find_last_nonempty_line(term
, term
->screen
) + 1;
1235 if (term
->curs
.y
== term
->rows
) {
1237 scroll(term
, 0, term
->rows
- 1, 1, TRUE
);
1243 term_schedule_tblink(term
);
1244 term_schedule_cblink(term
);
1248 * Force a screen update.
1250 void term_update(Terminal
*term
)
1254 term
->window_update_pending
= FALSE
;
1256 ctx
= get_ctx(term
->frontend
);
1258 int need_sbar_update
= term
->seen_disp_event
;
1259 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
1260 term
->disptop
= 0; /* return to main screen */
1261 term
->seen_disp_event
= 0;
1262 need_sbar_update
= TRUE
;
1265 if (need_sbar_update
)
1267 do_paint(term
, ctx
, TRUE
);
1268 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
1274 * Called from front end when a keypress occurs, to trigger
1275 * anything magical that needs to happen in that situation.
1277 void term_seen_key_event(Terminal
*term
)
1280 * On any keypress, clear the bell overload mechanism
1281 * completely, on the grounds that large numbers of
1282 * beeps coming from deliberate key action are likely
1283 * to be intended (e.g. beeps from filename completion
1284 * blocking repeatedly).
1286 term
->beep_overloaded
= FALSE
;
1287 while (term
->beephead
) {
1288 struct beeptime
*tmp
= term
->beephead
;
1289 term
->beephead
= tmp
->next
;
1292 term
->beeptail
= NULL
;
1296 * Reset the scrollback on keypress, if we're doing that.
1298 if (term
->cfg
.scroll_on_key
) {
1299 term
->disptop
= 0; /* return to main screen */
1300 seen_disp_event(term
);
1305 * Same as power_on(), but an external function.
1307 void term_pwron(Terminal
*term
, int clear
)
1309 power_on(term
, clear
);
1310 if (term
->ldisc
) /* cause ldisc to notice changes */
1311 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1317 static void set_erase_char(Terminal
*term
)
1319 term
->erase_char
= term
->basic_erase_char
;
1321 term
->erase_char
.attr
= (term
->curr_attr
&
1322 (ATTR_FGMASK
| ATTR_BGMASK
));
1326 * When the user reconfigures us, we need to check the forbidden-
1327 * alternate-screen config option, disable raw mouse mode if the
1328 * user has disabled mouse reporting, and abandon a print job if
1329 * the user has disabled printing.
1331 void term_reconfig(Terminal
*term
, Config
*cfg
)
1334 * Before adopting the new config, check all those terminal
1335 * settings which control power-on defaults; and if they've
1336 * changed, we will modify the current state as well as the
1337 * default one. The full list is: Auto wrap mode, DEC Origin
1338 * Mode, BCE, blinking text, character classes.
1340 int reset_wrap
, reset_decom
, reset_bce
, reset_tblink
, reset_charclass
;
1343 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
1344 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
1345 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
1346 reset_tblink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
1347 reset_charclass
= 0;
1348 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
1349 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
1350 reset_charclass
= 1;
1353 * If the bidi or shaping settings have changed, flush the bidi
1356 if (term
->cfg
.arabicshaping
!= cfg
->arabicshaping
||
1357 term
->cfg
.bidi
!= cfg
->bidi
) {
1358 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1359 sfree(term
->pre_bidi_cache
[i
].chars
);
1360 sfree(term
->post_bidi_cache
[i
].chars
);
1361 term
->pre_bidi_cache
[i
].width
= -1;
1362 term
->pre_bidi_cache
[i
].chars
= NULL
;
1363 term
->post_bidi_cache
[i
].width
= -1;
1364 term
->post_bidi_cache
[i
].chars
= NULL
;
1368 term
->cfg
= *cfg
; /* STRUCTURE COPY */
1371 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1373 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1375 term
->use_bce
= term
->cfg
.bce
;
1376 set_erase_char(term
);
1379 term
->blink_is_real
= term
->cfg
.blinktext
;
1381 if (reset_charclass
)
1382 for (i
= 0; i
< 256; i
++)
1383 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1385 if (term
->cfg
.no_alt_screen
)
1386 swap_screen(term
, 0, FALSE
, FALSE
);
1387 if (term
->cfg
.no_mouse_rep
) {
1388 term
->xterm_mouse
= 0;
1389 set_raw_mouse_mode(term
->frontend
, 0);
1391 if (term
->cfg
.no_remote_charset
) {
1392 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
1393 term
->sco_acs
= term
->alt_sco_acs
= 0;
1396 if (!*term
->cfg
.printer
) {
1397 term_print_finish(term
);
1399 term_schedule_tblink(term
);
1400 term_schedule_cblink(term
);
1404 * Clear the scrollback.
1406 void term_clrsb(Terminal
*term
)
1408 unsigned char *line
;
1410 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
1411 sfree(line
); /* this is compressed data, not a termline */
1413 term
->tempsblines
= 0;
1414 term
->alt_sblines
= 0;
1419 * Initialise the terminal.
1421 Terminal
*term_init(Config
*mycfg
, struct unicode_data
*ucsdata
,
1427 * Allocate a new Terminal structure and initialise the fields
1430 term
= snew(Terminal
);
1431 term
->frontend
= frontend
;
1432 term
->ucsdata
= ucsdata
;
1433 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
1434 term
->logctx
= NULL
;
1435 term
->compatibility_level
= TM_PUTTY
;
1436 strcpy(term
->id_string
, "\033[?6c");
1437 term
->cblink_pending
= term
->tblink_pending
= FALSE
;
1438 term
->paste_buffer
= NULL
;
1439 term
->paste_len
= 0;
1440 term
->last_paste
= 0;
1441 bufchain_init(&term
->inbuf
);
1442 bufchain_init(&term
->printer_buf
);
1443 term
->printing
= term
->only_printing
= FALSE
;
1444 term
->print_job
= NULL
;
1445 term
->vt52_mode
= FALSE
;
1446 term
->cr_lf_return
= FALSE
;
1447 term
->seen_disp_event
= FALSE
;
1448 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
1449 term
->reset_132
= FALSE
;
1450 term
->cblinker
= term
->tblinker
= 0;
1451 term
->has_focus
= 1;
1452 term
->repeat_off
= FALSE
;
1453 term
->termstate
= TOPLEVEL
;
1454 term
->selstate
= NO_SELECTION
;
1457 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
1458 term
->tempsblines
= 0;
1459 term
->alt_sblines
= 0;
1461 term
->disptext
= NULL
;
1462 term
->dispcursx
= term
->dispcursy
= -1;
1465 term
->rows
= term
->cols
= -1;
1466 power_on(term
, TRUE
);
1467 term
->beephead
= term
->beeptail
= NULL
;
1468 #ifdef OPTIMISE_SCROLL
1469 term
->scrollhead
= term
->scrolltail
= NULL
;
1470 #endif /* OPTIMISE_SCROLL */
1472 term
->lastbeep
= FALSE
;
1473 term
->beep_overloaded
= FALSE
;
1474 term
->attr_mask
= 0xffffffff;
1475 term
->resize_fn
= NULL
;
1476 term
->resize_ctx
= NULL
;
1477 term
->in_term_out
= FALSE
;
1479 term
->ltemp_size
= 0;
1480 term
->wcFrom
= NULL
;
1482 term
->wcFromTo_size
= 0;
1484 term
->window_update_pending
= FALSE
;
1486 term
->bidi_cache_size
= 0;
1487 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
1490 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
1491 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
1492 term
->basic_erase_char
.cc_next
= 0;
1493 term
->erase_char
= term
->basic_erase_char
;
1498 void term_free(Terminal
*term
)
1501 struct beeptime
*beep
;
1504 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
1505 sfree(line
); /* compressed data, not a termline */
1506 freetree234(term
->scrollback
);
1507 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
1509 freetree234(term
->screen
);
1510 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
1512 freetree234(term
->alt_screen
);
1513 if (term
->disptext
) {
1514 for (i
= 0; i
< term
->rows
; i
++)
1515 freeline(term
->disptext
[i
]);
1517 sfree(term
->disptext
);
1518 while (term
->beephead
) {
1519 beep
= term
->beephead
;
1520 term
->beephead
= beep
->next
;
1523 bufchain_clear(&term
->inbuf
);
1525 printer_finish_job(term
->print_job
);
1526 bufchain_clear(&term
->printer_buf
);
1527 sfree(term
->paste_buffer
);
1529 sfree(term
->wcFrom
);
1532 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1533 sfree(term
->pre_bidi_cache
[i
].chars
);
1534 sfree(term
->post_bidi_cache
[i
].chars
);
1536 sfree(term
->pre_bidi_cache
);
1537 sfree(term
->post_bidi_cache
);
1539 expire_timer_context(term
);
1545 * Set up the terminal for a given size.
1547 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1550 termline
**newdisp
, *line
;
1551 int i
, j
, oldrows
= term
->rows
;
1553 int save_alt_which
= term
->alt_which
;
1555 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1556 newsavelines
== term
->savelines
)
1557 return; /* nothing to do */
1559 /* Behave sensibly if we're given zero (or negative) rows/cols */
1561 if (newrows
< 1) newrows
= 1;
1562 if (newcols
< 1) newcols
= 1;
1565 swap_screen(term
, 0, FALSE
, FALSE
);
1567 term
->alt_t
= term
->marg_t
= 0;
1568 term
->alt_b
= term
->marg_b
= newrows
- 1;
1570 if (term
->rows
== -1) {
1571 term
->scrollback
= newtree234(NULL
);
1572 term
->screen
= newtree234(NULL
);
1573 term
->tempsblines
= 0;
1578 * Resize the screen and scrollback. We only need to shift
1579 * lines around within our data structures, because lineptr()
1580 * will take care of resizing each individual line if
1583 * - If the new screen is longer, we shunt lines in from temporary
1584 * scrollback if possible, otherwise we add new blank lines at
1587 * - If the new screen is shorter, we remove any blank lines at
1588 * the bottom if possible, otherwise shunt lines above the cursor
1589 * to scrollback if possible, otherwise delete lines below the
1592 * - Then, if the new scrollback length is less than the
1593 * amount of scrollback we actually have, we must throw some
1596 sblen
= count234(term
->scrollback
);
1597 /* Do this loop to expand the screen if newrows > rows */
1598 assert(term
->rows
== count234(term
->screen
));
1599 while (term
->rows
< newrows
) {
1600 if (term
->tempsblines
> 0) {
1601 unsigned char *cline
;
1602 /* Insert a line from the scrollback at the top of the screen. */
1603 assert(sblen
>= term
->tempsblines
);
1604 cline
= delpos234(term
->scrollback
, --sblen
);
1605 line
= decompressline(cline
, NULL
);
1607 line
->temporary
= FALSE
; /* reconstituted line is now real */
1608 term
->tempsblines
-= 1;
1609 addpos234(term
->screen
, line
, 0);
1611 term
->savecurs
.y
+= 1;
1613 /* Add a new blank line at the bottom of the screen. */
1614 line
= newline(term
, newcols
, FALSE
);
1615 addpos234(term
->screen
, line
, count234(term
->screen
));
1619 /* Do this loop to shrink the screen if newrows < rows */
1620 while (term
->rows
> newrows
) {
1621 if (term
->curs
.y
< term
->rows
- 1) {
1622 /* delete bottom row, unless it contains the cursor */
1623 sfree(delpos234(term
->screen
, term
->rows
- 1));
1625 /* push top row to scrollback */
1626 line
= delpos234(term
->screen
, 0);
1627 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1629 term
->tempsblines
+= 1;
1631 term
->savecurs
.y
-= 1;
1635 assert(term
->rows
== newrows
);
1636 assert(count234(term
->screen
) == newrows
);
1638 /* Delete any excess lines from the scrollback. */
1639 while (sblen
> newsavelines
) {
1640 line
= delpos234(term
->scrollback
, 0);
1644 if (sblen
< term
->tempsblines
)
1645 term
->tempsblines
= sblen
;
1646 assert(count234(term
->scrollback
) <= newsavelines
);
1647 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1650 /* Make a new displayed text buffer. */
1651 newdisp
= snewn(newrows
, termline
*);
1652 for (i
= 0; i
< newrows
; i
++) {
1653 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1654 for (j
= 0; j
< newcols
; j
++)
1655 newdisp
[i
]->chars
[j
].attr
= ATTR_INVALID
;
1657 if (term
->disptext
) {
1658 for (i
= 0; i
< oldrows
; i
++)
1659 freeline(term
->disptext
[i
]);
1661 sfree(term
->disptext
);
1662 term
->disptext
= newdisp
;
1663 term
->dispcursx
= term
->dispcursy
= -1;
1665 /* Make a new alternate screen. */
1666 newalt
= newtree234(NULL
);
1667 for (i
= 0; i
< newrows
; i
++) {
1668 line
= newline(term
, newcols
, TRUE
);
1669 addpos234(newalt
, line
, i
);
1671 if (term
->alt_screen
) {
1672 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1674 freetree234(term
->alt_screen
);
1676 term
->alt_screen
= newalt
;
1677 term
->alt_sblines
= 0;
1679 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1682 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1683 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1686 /* Check that the cursor positions are still valid. */
1687 if (term
->savecurs
.y
< 0)
1688 term
->savecurs
.y
= 0;
1689 if (term
->savecurs
.y
>= newrows
)
1690 term
->savecurs
.y
= newrows
- 1;
1691 if (term
->curs
.y
< 0)
1693 if (term
->curs
.y
>= newrows
)
1694 term
->curs
.y
= newrows
- 1;
1695 if (term
->curs
.x
>= newcols
)
1696 term
->curs
.x
= newcols
- 1;
1697 term
->alt_x
= term
->alt_y
= 0;
1698 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1700 term
->rows
= newrows
;
1701 term
->cols
= newcols
;
1702 term
->savelines
= newsavelines
;
1704 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1708 if (term
->resize_fn
)
1709 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1713 * Hand a function and context pointer to the terminal which it can
1714 * use to notify a back end of resizes.
1716 void term_provide_resize_fn(Terminal
*term
,
1717 void (*resize_fn
)(void *, int, int),
1720 term
->resize_fn
= resize_fn
;
1721 term
->resize_ctx
= resize_ctx
;
1722 if (term
->cols
> 0 && term
->rows
> 0)
1723 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1726 /* Find the bottom line on the screen that has any content.
1727 * If only the top line has content, returns 0.
1728 * If no lines have content, return -1.
1730 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1733 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1734 termline
*line
= index234(screen
, i
);
1736 for (j
= 0; j
< line
->cols
; j
++)
1737 if (!termchars_equal(&line
->chars
[j
], &term
->erase_char
))
1739 if (j
!= line
->cols
) break;
1745 * Swap screens. If `reset' is TRUE and we have been asked to
1746 * switch to the alternate screen, we must bring most of its
1747 * configuration from the main screen and erase the contents of the
1748 * alternate screen completely. (This is even true if we're already
1749 * on it! Blame xterm.)
1751 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1758 reset
= FALSE
; /* do no weird resetting if which==0 */
1760 if (which
!= term
->alt_which
) {
1761 term
->alt_which
= which
;
1763 ttr
= term
->alt_screen
;
1764 term
->alt_screen
= term
->screen
;
1766 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1768 if (!reset
&& !keep_cur_pos
)
1769 term
->curs
.x
= term
->alt_x
;
1772 if (!reset
&& !keep_cur_pos
)
1773 term
->curs
.y
= term
->alt_y
;
1776 if (!reset
) term
->marg_t
= term
->alt_t
;
1779 if (!reset
) term
->marg_b
= term
->alt_b
;
1782 if (!reset
) term
->dec_om
= term
->alt_om
;
1785 if (!reset
) term
->wrap
= term
->alt_wrap
;
1788 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1789 term
->alt_wnext
= t
;
1791 if (!reset
) term
->insert
= term
->alt_ins
;
1794 if (!reset
) term
->cset
= term
->alt_cset
;
1797 if (!reset
) term
->utf
= term
->alt_utf
;
1800 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1801 term
->alt_sco_acs
= t
;
1803 tp
= term
->savecurs
;
1804 if (!reset
&& !keep_cur_pos
)
1805 term
->savecurs
= term
->alt_savecurs
;
1806 term
->alt_savecurs
= tp
;
1807 t
= term
->save_cset
;
1808 if (!reset
&& !keep_cur_pos
)
1809 term
->save_cset
= term
->alt_save_cset
;
1810 term
->alt_save_cset
= t
;
1811 t
= term
->save_csattr
;
1812 if (!reset
&& !keep_cur_pos
)
1813 term
->save_csattr
= term
->alt_save_csattr
;
1814 term
->alt_save_csattr
= t
;
1816 if (!reset
&& !keep_cur_pos
)
1817 term
->save_utf
= term
->alt_save_utf
;
1818 term
->alt_save_utf
= t
;
1819 t
= term
->save_wnext
;
1820 if (!reset
&& !keep_cur_pos
)
1821 term
->save_wnext
= term
->alt_save_wnext
;
1822 term
->alt_save_wnext
= t
;
1823 t
= term
->save_sco_acs
;
1824 if (!reset
&& !keep_cur_pos
)
1825 term
->save_sco_acs
= term
->alt_save_sco_acs
;
1826 term
->alt_save_sco_acs
= t
;
1829 if (reset
&& term
->screen
) {
1831 * Yes, this _is_ supposed to honour background-colour-erase.
1833 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1838 * Update the scroll bar.
1840 static void update_sbar(Terminal
*term
)
1842 int nscroll
= sblines(term
);
1843 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1844 nscroll
+ term
->disptop
, term
->rows
);
1848 * Check whether the region bounded by the two pointers intersects
1849 * the scroll region, and de-select the on-screen selection if so.
1851 static void check_selection(Terminal
*term
, pos from
, pos to
)
1853 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1858 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1859 * for backward.) `sb' is TRUE if the scrolling is permitted to
1860 * affect the scrollback buffer.
1862 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1865 int i
, seltop
, olddisptop
, shift
;
1867 if (topline
!= 0 || term
->alt_which
!= 0)
1870 olddisptop
= term
->disptop
;
1874 line
= delpos234(term
->screen
, botline
);
1875 resizeline(term
, line
, term
->cols
);
1876 for (i
= 0; i
< term
->cols
; i
++)
1877 copy_termchar(line
, i
, &term
->erase_char
);
1878 line
->lattr
= LATTR_NORM
;
1879 addpos234(term
->screen
, line
, topline
);
1881 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
1883 if (term
->selstart
.y
> botline
) {
1884 term
->selstart
.y
= botline
+ 1;
1885 term
->selstart
.x
= 0;
1888 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
1890 if (term
->selend
.y
> botline
) {
1891 term
->selend
.y
= botline
+ 1;
1900 line
= delpos234(term
->screen
, topline
);
1901 #ifdef TERM_CC_DIAGS
1904 if (sb
&& term
->savelines
> 0) {
1905 int sblen
= count234(term
->scrollback
);
1907 * We must add this line to the scrollback. We'll
1908 * remove a line from the top of the scrollback if
1909 * the scrollback is full.
1911 if (sblen
== term
->savelines
) {
1912 unsigned char *cline
;
1915 cline
= delpos234(term
->scrollback
, 0);
1918 term
->tempsblines
+= 1;
1920 addpos234(term
->scrollback
, compressline(line
), sblen
);
1922 /* now `line' itself can be reused as the bottom line */
1925 * If the user is currently looking at part of the
1926 * scrollback, and they haven't enabled any options
1927 * that are going to reset the scrollback as a
1928 * result of this movement, then the chances are
1929 * they'd like to keep looking at the same line. So
1930 * we move their viewpoint at the same rate as the
1931 * scroll, at least until their viewpoint hits the
1932 * top end of the scrollback buffer, at which point
1933 * we don't have the choice any more.
1935 * Thanks to Jan Holmen Holsten for the idea and
1936 * initial implementation.
1938 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
1941 resizeline(term
, line
, term
->cols
);
1942 for (i
= 0; i
< term
->cols
; i
++)
1943 copy_termchar(line
, i
, &term
->erase_char
);
1944 line
->lattr
= LATTR_NORM
;
1945 addpos234(term
->screen
, line
, botline
);
1948 * If the selection endpoints move into the scrollback,
1949 * we keep them moving until they hit the top. However,
1950 * of course, if the line _hasn't_ moved into the
1951 * scrollback then we don't do this, and cut them off
1952 * at the top of the scroll region.
1954 * This applies to selstart and selend (for an existing
1955 * selection), and also selanchor (for one being
1956 * selected as we speak).
1958 seltop
= sb ?
-term
->savelines
: topline
;
1960 if (term
->selstate
!= NO_SELECTION
) {
1961 if (term
->selstart
.y
>= seltop
&&
1962 term
->selstart
.y
<= botline
) {
1964 if (term
->selstart
.y
< seltop
) {
1965 term
->selstart
.y
= seltop
;
1966 term
->selstart
.x
= 0;
1969 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
1971 if (term
->selend
.y
< seltop
) {
1972 term
->selend
.y
= seltop
;
1976 if (term
->selanchor
.y
>= seltop
&&
1977 term
->selanchor
.y
<= botline
) {
1978 term
->selanchor
.y
--;
1979 if (term
->selanchor
.y
< seltop
) {
1980 term
->selanchor
.y
= seltop
;
1981 term
->selanchor
.x
= 0;
1989 #ifdef OPTIMISE_SCROLL
1990 shift
+= term
->disptop
- olddisptop
;
1991 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
1992 scroll_display(term
, topline
, botline
, shift
);
1993 #endif /* OPTIMISE_SCROLL */
1996 #ifdef OPTIMISE_SCROLL
1998 * Add a scroll of a region on the screen into the pending scroll list.
1999 * `lines' is +ve for scrolling forward, -ve for backward.
2001 * If the scroll is on the same area as the last scroll in the list,
2004 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
2006 struct scrollregion
*newscroll
;
2007 if (term
->scrolltail
&&
2008 term
->scrolltail
->topline
== topline
&&
2009 term
->scrolltail
->botline
== botline
) {
2010 term
->scrolltail
->lines
+= lines
;
2012 newscroll
= snew(struct scrollregion
);
2013 newscroll
->topline
= topline
;
2014 newscroll
->botline
= botline
;
2015 newscroll
->lines
= lines
;
2016 newscroll
->next
= NULL
;
2018 if (!term
->scrollhead
)
2019 term
->scrollhead
= newscroll
;
2021 term
->scrolltail
->next
= newscroll
;
2022 term
->scrolltail
= newscroll
;
2027 * Scroll the physical display, and our conception of it in disptext.
2029 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
2031 int distance
, nlines
, i
, j
;
2033 distance
= lines
> 0 ? lines
: -lines
;
2034 nlines
= botline
- topline
+ 1 - distance
;
2036 for (i
= 0; i
< nlines
; i
++)
2037 for (j
= 0; j
< term
->cols
; j
++)
2038 copy_termchar(term
->disptext
[i
], j
,
2039 term
->disptext
[i
+distance
]->chars
+j
);
2040 if (term
->dispcursy
>= 0 &&
2041 term
->dispcursy
>= topline
+ distance
&&
2042 term
->dispcursy
< topline
+ distance
+ nlines
)
2043 term
->dispcursy
-= distance
;
2044 for (i
= 0; i
< distance
; i
++)
2045 for (j
= 0; j
< term
->cols
; j
++)
2046 term
->disptext
[nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
2048 for (i
= nlines
; i
-- ;)
2049 for (j
= 0; j
< term
->cols
; j
++)
2050 copy_termchar(term
->disptext
[i
+distance
], j
,
2051 term
->disptext
[i
]->chars
+j
);
2052 if (term
->dispcursy
>= 0 &&
2053 term
->dispcursy
>= topline
&&
2054 term
->dispcursy
< topline
+ nlines
)
2055 term
->dispcursy
+= distance
;
2056 for (i
= 0; i
< distance
; i
++)
2057 for (j
= 0; j
< term
->cols
; j
++)
2058 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
2060 save_scroll(term
, topline
, botline
, lines
);
2062 #endif /* OPTIMISE_SCROLL */
2065 * Move the cursor to a given position, clipping at boundaries. We
2066 * may or may not want to clip at the scroll margin: marg_clip is 0
2067 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2068 * even _being_ outside the margins.
2070 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
2074 if (x
>= term
->cols
)
2077 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
2080 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
2086 if (y
>= term
->rows
)
2090 term
->wrapnext
= FALSE
;
2094 * Save or restore the cursor and SGR mode.
2096 static void save_cursor(Terminal
*term
, int save
)
2099 term
->savecurs
= term
->curs
;
2100 term
->save_attr
= term
->curr_attr
;
2101 term
->save_cset
= term
->cset
;
2102 term
->save_utf
= term
->utf
;
2103 term
->save_wnext
= term
->wrapnext
;
2104 term
->save_csattr
= term
->cset_attr
[term
->cset
];
2105 term
->save_sco_acs
= term
->sco_acs
;
2107 term
->curs
= term
->savecurs
;
2108 /* Make sure the window hasn't shrunk since the save */
2109 if (term
->curs
.x
>= term
->cols
)
2110 term
->curs
.x
= term
->cols
- 1;
2111 if (term
->curs
.y
>= term
->rows
)
2112 term
->curs
.y
= term
->rows
- 1;
2114 term
->curr_attr
= term
->save_attr
;
2115 term
->cset
= term
->save_cset
;
2116 term
->utf
= term
->save_utf
;
2117 term
->wrapnext
= term
->save_wnext
;
2119 * wrapnext might reset to False if the x position is no
2120 * longer at the rightmost edge.
2122 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
2123 term
->wrapnext
= FALSE
;
2124 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
2125 term
->sco_acs
= term
->save_sco_acs
;
2126 set_erase_char(term
);
2131 * This function is called before doing _anything_ which affects
2132 * only part of a line of text. It is used to mark the boundary
2133 * between two character positions, and it indicates that some sort
2134 * of effect is going to happen on only one side of that boundary.
2136 * The effect of this function is to check whether a CJK
2137 * double-width character is straddling the boundary, and to remove
2138 * it and replace it with two spaces if so. (Of course, one or
2139 * other of those spaces is then likely to be replaced with
2140 * something else again, as a result of whatever happens next.)
2142 * Also, if the boundary is at the right-hand _edge_ of the screen,
2143 * it implies something deliberate is being done to the rightmost
2144 * column position; hence we must clear LATTR_WRAPPED2.
2146 * The input to the function is the coordinates of the _second_
2147 * character of the pair.
2149 static void check_boundary(Terminal
*term
, int x
, int y
)
2153 /* Validate input coordinates, just in case. */
2154 if (x
== 0 || x
> term
->cols
)
2157 ldata
= scrlineptr(y
);
2158 if (x
== term
->cols
) {
2159 ldata
->lattr
&= ~LATTR_WRAPPED2
;
2161 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
2162 clear_cc(ldata
, x
-1);
2164 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
2165 ldata
->chars
[x
] = ldata
->chars
[x
-1];
2171 * Erase a large portion of the screen: the whole screen, or the
2172 * whole line, or parts thereof.
2174 static void erase_lots(Terminal
*term
,
2175 int line_only
, int from_begin
, int to_end
)
2179 int erasing_lines_from_top
= 0;
2182 start
.y
= term
->curs
.y
;
2184 end
.y
= term
->curs
.y
+ 1;
2186 erase_lattr
= FALSE
;
2201 if (!from_begin
|| !to_end
)
2202 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2203 check_selection(term
, start
, end
);
2205 /* Clear screen also forces a full window redraw, just in case. */
2206 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
2207 term_invalidate(term
);
2209 /* Lines scrolled away shouldn't be brought back on if the terminal
2211 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
2212 erasing_lines_from_top
= 1;
2214 if (term
->cfg
.erase_to_scrollback
&& erasing_lines_from_top
) {
2215 /* If it's a whole number of lines, starting at the top, and
2216 * we're fully erasing them, erase by scrolling and keep the
2217 * lines in the scrollback. */
2218 int scrolllines
= end
.y
;
2219 if (end
.y
== term
->rows
) {
2220 /* Shrink until we find a non-empty row.*/
2221 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
2223 if (scrolllines
> 0)
2224 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
2226 termline
*ldata
= scrlineptr(start
.y
);
2227 while (poslt(start
, end
)) {
2228 if (start
.x
== term
->cols
) {
2230 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
2232 ldata
->lattr
= LATTR_NORM
;
2234 copy_termchar(ldata
, start
.x
, &term
->erase_char
);
2236 if (incpos(start
) && start
.y
< term
->rows
) {
2237 ldata
= scrlineptr(start
.y
);
2242 /* After an erase of lines from the top of the screen, we shouldn't
2243 * bring the lines back again if the terminal enlarges (since the user or
2244 * application has explictly thrown them away). */
2245 if (erasing_lines_from_top
&& !(term
->alt_which
))
2246 term
->tempsblines
= 0;
2250 * Insert or delete characters within the current line. n is +ve if
2251 * insertion is desired, and -ve for deletion.
2253 static void insch(Terminal
*term
, int n
)
2255 int dir
= (n
< 0 ?
-1 : +1);
2260 n
= (n
< 0 ?
-n
: n
);
2261 if (n
> term
->cols
- term
->curs
.x
)
2262 n
= term
->cols
- term
->curs
.x
;
2263 m
= term
->cols
- term
->curs
.x
- n
;
2264 cursplus
.y
= term
->curs
.y
;
2265 cursplus
.x
= term
->curs
.x
+ n
;
2266 check_selection(term
, term
->curs
, cursplus
);
2267 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2269 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
2270 ldata
= scrlineptr(term
->curs
.y
);
2272 for (j
= 0; j
< m
; j
++)
2273 move_termchar(ldata
,
2274 ldata
->chars
+ term
->curs
.x
+ j
,
2275 ldata
->chars
+ term
->curs
.x
+ j
+ n
);
2277 copy_termchar(ldata
, term
->curs
.x
+ m
++, &term
->erase_char
);
2280 move_termchar(ldata
,
2281 ldata
->chars
+ term
->curs
.x
+ j
+ n
,
2282 ldata
->chars
+ term
->curs
.x
+ j
);
2284 copy_termchar(ldata
, term
->curs
.x
+ n
, &term
->erase_char
);
2289 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2290 * whether the mode is a DEC private one or a normal one.)
2292 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
2296 case 1: /* DECCKM: application cursor keys */
2297 term
->app_cursor_keys
= state
;
2299 case 2: /* DECANM: VT52 mode */
2300 term
->vt52_mode
= !state
;
2301 if (term
->vt52_mode
) {
2302 term
->blink_is_real
= FALSE
;
2303 term
->vt52_bold
= FALSE
;
2305 term
->blink_is_real
= term
->cfg
.blinktext
;
2307 term_schedule_tblink(term
);
2309 case 3: /* DECCOLM: 80/132 columns */
2311 if (!term
->cfg
.no_remote_resize
)
2312 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
2313 term
->reset_132
= state
;
2314 term
->alt_t
= term
->marg_t
= 0;
2315 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
2316 move(term
, 0, 0, 0);
2317 erase_lots(term
, FALSE
, TRUE
, TRUE
);
2319 case 5: /* DECSCNM: reverse video */
2321 * Toggle reverse video. If we receive an OFF within the
2322 * visual bell timeout period after an ON, we trigger an
2323 * effective visual bell, so that ESC[?5hESC[?5l will
2324 * always be an actually _visible_ visual bell.
2326 if (term
->rvideo
&& !state
) {
2327 /* This is an OFF, so set up a vbell */
2328 term_schedule_vbell(term
, TRUE
, term
->rvbell_startpoint
);
2329 } else if (!term
->rvideo
&& state
) {
2330 /* This is an ON, so we notice the time and save it. */
2331 term
->rvbell_startpoint
= GETTICKCOUNT();
2333 term
->rvideo
= state
;
2334 seen_disp_event(term
);
2336 case 6: /* DECOM: DEC origin mode */
2337 term
->dec_om
= state
;
2339 case 7: /* DECAWM: auto wrap */
2342 case 8: /* DECARM: auto key repeat */
2343 term
->repeat_off
= !state
;
2345 case 10: /* DECEDM: set local edit mode */
2346 term
->term_editing
= state
;
2347 if (term
->ldisc
) /* cause ldisc to notice changes */
2348 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2350 case 25: /* DECTCEM: enable/disable cursor */
2351 compatibility2(OTHER
, VT220
);
2352 term
->cursor_on
= state
;
2353 seen_disp_event(term
);
2355 case 47: /* alternate screen */
2356 compatibility(OTHER
);
2358 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
2361 case 1000: /* xterm mouse 1 */
2362 term
->xterm_mouse
= state ?
1 : 0;
2363 set_raw_mouse_mode(term
->frontend
, state
);
2365 case 1002: /* xterm mouse 2 */
2366 term
->xterm_mouse
= state ?
2 : 0;
2367 set_raw_mouse_mode(term
->frontend
, state
);
2369 case 1047: /* alternate screen */
2370 compatibility(OTHER
);
2372 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
2375 case 1048: /* save/restore cursor */
2376 if (!term
->cfg
.no_alt_screen
)
2377 save_cursor(term
, state
);
2378 if (!state
) seen_disp_event(term
);
2380 case 1049: /* cursor & alternate screen */
2381 if (state
&& !term
->cfg
.no_alt_screen
)
2382 save_cursor(term
, state
);
2383 if (!state
) seen_disp_event(term
);
2384 compatibility(OTHER
);
2386 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
2387 if (!state
&& !term
->cfg
.no_alt_screen
)
2388 save_cursor(term
, state
);
2393 case 4: /* IRM: set insert mode */
2394 compatibility(VT102
);
2395 term
->insert
= state
;
2397 case 12: /* SRM: set echo mode */
2398 term
->term_echoing
= !state
;
2399 if (term
->ldisc
) /* cause ldisc to notice changes */
2400 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2402 case 20: /* LNM: Return sends ... */
2403 term
->cr_lf_return
= state
;
2405 case 34: /* WYULCURM: Make cursor BIG */
2406 compatibility2(OTHER
, VT220
);
2407 term
->big_cursor
= !state
;
2412 * Process an OSC sequence: set window title or icon name.
2414 static void do_osc(Terminal
*term
)
2417 while (term
->osc_strlen
--)
2418 term
->wordness
[(unsigned char)
2419 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
2421 term
->osc_string
[term
->osc_strlen
] = '\0';
2422 switch (term
->esc_args
[0]) {
2425 if (!term
->cfg
.no_remote_wintitle
)
2426 set_icon(term
->frontend
, term
->osc_string
);
2427 if (term
->esc_args
[0] == 1)
2429 /* fall through: parameter 0 means set both */
2432 if (!term
->cfg
.no_remote_wintitle
)
2433 set_title(term
->frontend
, term
->osc_string
);
2440 * ANSI printing routines.
2442 static void term_print_setup(Terminal
*term
)
2444 bufchain_clear(&term
->printer_buf
);
2445 term
->print_job
= printer_start_job(term
->cfg
.printer
);
2447 static void term_print_flush(Terminal
*term
)
2452 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
2453 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2456 printer_job_data(term
->print_job
, data
, len
);
2457 bufchain_consume(&term
->printer_buf
, len
);
2460 static void term_print_finish(Terminal
*term
)
2466 if (!term
->printing
&& !term
->only_printing
)
2467 return; /* we need do nothing */
2469 term_print_flush(term
);
2470 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
2471 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2473 if (c
== '\033' || c
== '\233') {
2474 bufchain_consume(&term
->printer_buf
, size
);
2477 printer_job_data(term
->print_job
, &c
, 1);
2478 bufchain_consume(&term
->printer_buf
, 1);
2481 printer_finish_job(term
->print_job
);
2482 term
->print_job
= NULL
;
2483 term
->printing
= term
->only_printing
= FALSE
;
2487 * Remove everything currently in `inbuf' and stick it up on the
2488 * in-memory display. There's a big state machine in here to
2489 * process escape sequences...
2491 static void term_out(Terminal
*term
)
2495 unsigned char localbuf
[256], *chars
;
2500 chars
= NULL
; /* placate compiler warnings */
2501 while (nchars
> 0 || unget
!= -1 || bufchain_size(&term
->inbuf
) > 0) {
2505 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
2506 if (nchars
> sizeof(localbuf
))
2507 nchars
= sizeof(localbuf
);
2508 memcpy(localbuf
, ret
, nchars
);
2509 bufchain_consume(&term
->inbuf
, nchars
);
2511 assert(chars
!= NULL
);
2517 * Optionally log the session traffic to a file. Useful for
2518 * debugging and possibly also useful for actual logging.
2520 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
2521 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
2527 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2528 * be able to display 8-bit characters, but I'll let that go 'cause
2533 * If we're printing, add the character to the printer
2536 if (term
->printing
) {
2537 bufchain_add(&term
->printer_buf
, &c
, 1);
2540 * If we're in print-only mode, we use a much simpler
2541 * state machine designed only to recognise the ESC[4i
2542 * termination sequence.
2544 if (term
->only_printing
) {
2546 term
->print_state
= 1;
2547 else if (c
== (unsigned char)'\233')
2548 term
->print_state
= 2;
2549 else if (c
== '[' && term
->print_state
== 1)
2550 term
->print_state
= 2;
2551 else if (c
== '4' && term
->print_state
== 2)
2552 term
->print_state
= 3;
2553 else if (c
== 'i' && term
->print_state
== 3)
2554 term
->print_state
= 4;
2556 term
->print_state
= 0;
2557 if (term
->print_state
== 4) {
2558 term_print_finish(term
);
2564 /* First see about all those translations. */
2565 if (term
->termstate
== TOPLEVEL
) {
2567 switch (term
->utf_state
) {
2570 /* UTF-8 must be stateless so we ignore iso2022. */
2571 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2572 c
= term
->ucsdata
->unitab_ctrl
[c
];
2573 else c
= ((unsigned char)c
) | CSET_ASCII
;
2575 } else if ((c
& 0xe0) == 0xc0) {
2576 term
->utf_size
= term
->utf_state
= 1;
2577 term
->utf_char
= (c
& 0x1f);
2578 } else if ((c
& 0xf0) == 0xe0) {
2579 term
->utf_size
= term
->utf_state
= 2;
2580 term
->utf_char
= (c
& 0x0f);
2581 } else if ((c
& 0xf8) == 0xf0) {
2582 term
->utf_size
= term
->utf_state
= 3;
2583 term
->utf_char
= (c
& 0x07);
2584 } else if ((c
& 0xfc) == 0xf8) {
2585 term
->utf_size
= term
->utf_state
= 4;
2586 term
->utf_char
= (c
& 0x03);
2587 } else if ((c
& 0xfe) == 0xfc) {
2588 term
->utf_size
= term
->utf_state
= 5;
2589 term
->utf_char
= (c
& 0x01);
2600 if ((c
& 0xC0) != 0x80) {
2603 term
->utf_state
= 0;
2606 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2607 if (--term
->utf_state
)
2612 /* Is somebody trying to be evil! */
2614 (c
< 0x800 && term
->utf_size
>= 2) ||
2615 (c
< 0x10000 && term
->utf_size
>= 3) ||
2616 (c
< 0x200000 && term
->utf_size
>= 4) ||
2617 (c
< 0x4000000 && term
->utf_size
>= 5))
2620 /* Unicode line separator and paragraph separator are CR-LF */
2621 if (c
== 0x2028 || c
== 0x2029)
2624 /* High controls are probably a Baaad idea too. */
2628 /* The UTF-16 surrogates are not nice either. */
2629 /* The standard give the option of decoding these:
2630 * I don't want to! */
2631 if (c
>= 0xD800 && c
< 0xE000)
2634 /* ISO 10646 characters now limited to UTF-16 range. */
2638 /* This is currently a TagPhobic application.. */
2639 if (c
>= 0xE0000 && c
<= 0xE007F)
2642 /* U+FEFF is best seen as a null. */
2645 /* But U+FFFE is an error. */
2646 if (c
== 0xFFFE || c
== 0xFFFF)
2651 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2652 else if(term
->sco_acs
&&
2653 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2655 if (term
->sco_acs
== 2) c
|= 0x80;
2658 switch (term
->cset_attr
[term
->cset
]) {
2660 * Linedraw characters are different from 'ESC ( B'
2661 * only for a small range. For ones outside that
2662 * range, make sure we use the same font as well as
2663 * the same encoding.
2666 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2667 c
= term
->ucsdata
->unitab_ctrl
[c
];
2669 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2673 /* If UK-ASCII, make the '#' a LineDraw Pound */
2675 c
= '}' | CSET_LINEDRW
;
2678 /*FALLTHROUGH*/ case CSET_ASCII
:
2679 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2680 c
= term
->ucsdata
->unitab_ctrl
[c
];
2682 c
= ((unsigned char) c
) | CSET_ASCII
;
2685 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2692 * How about C1 controls?
2693 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2695 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2696 !term
->vt52_mode
&& has_compat(VT220
)) {
2700 term
->termstate
= SEEN_ESC
;
2701 term
->esc_query
= FALSE
;
2702 c
= '@' + (c
& 0x1F);
2706 /* Or the GL control. */
2707 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2708 if (term
->curs
.x
&& !term
->wrapnext
)
2710 term
->wrapnext
= FALSE
;
2711 /* destructive backspace might be disabled */
2712 if (!term
->cfg
.no_dbackspace
) {
2713 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2714 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2715 copy_termchar(scrlineptr(term
->curs
.y
),
2716 term
->curs
.x
, &term
->erase_char
);
2719 /* Or normal C0 controls. */
2720 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2722 case '\005': /* ENQ: terminal type query */
2724 * Strictly speaking this is VT100 but a VT100 defaults to
2725 * no response. Other terminals respond at their option.
2727 * Don't put a CR in the default string as this tends to
2728 * upset some weird software.
2730 compatibility(ANSIMIN
);
2732 char abuf
[lenof(term
->cfg
.answerback
)], *s
, *d
;
2733 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
;) {
2735 char c
= ctrlparse(s
, &n
);
2743 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2747 case '\007': /* BEL: Bell */
2749 struct beeptime
*newbeep
;
2750 unsigned long ticks
;
2752 ticks
= GETTICKCOUNT();
2754 if (!term
->beep_overloaded
) {
2755 newbeep
= snew(struct beeptime
);
2756 newbeep
->ticks
= ticks
;
2757 newbeep
->next
= NULL
;
2758 if (!term
->beephead
)
2759 term
->beephead
= newbeep
;
2761 term
->beeptail
->next
= newbeep
;
2762 term
->beeptail
= newbeep
;
2767 * Throw out any beeps that happened more than
2770 while (term
->beephead
&&
2771 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
2772 struct beeptime
*tmp
= term
->beephead
;
2773 term
->beephead
= tmp
->next
;
2775 if (!term
->beephead
)
2776 term
->beeptail
= NULL
;
2780 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
2781 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
2783 * If we're currently overloaded and the
2784 * last beep was more than s seconds ago,
2785 * leave overload mode.
2787 term
->beep_overloaded
= FALSE
;
2788 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
2789 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
2791 * Now, if we have n or more beeps
2792 * remaining in the queue, go into overload
2795 term
->beep_overloaded
= TRUE
;
2797 term
->lastbeep
= ticks
;
2800 * Perform an actual beep if we're not overloaded.
2802 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
2803 do_beep(term
->frontend
, term
->cfg
.beep
);
2805 if (term
->cfg
.beep
== BELL_VISUAL
) {
2806 term_schedule_vbell(term
, FALSE
, 0);
2809 seen_disp_event(term
);
2812 case '\b': /* BS: Back space */
2813 if (term
->curs
.x
== 0 &&
2814 (term
->curs
.y
== 0 || term
->wrap
== 0))
2816 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2817 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2818 else if (term
->wrapnext
)
2819 term
->wrapnext
= FALSE
;
2822 seen_disp_event(term
);
2824 case '\016': /* LS1: Locking-shift one */
2825 compatibility(VT100
);
2828 case '\017': /* LS0: Locking-shift zero */
2829 compatibility(VT100
);
2832 case '\033': /* ESC: Escape */
2833 if (term
->vt52_mode
)
2834 term
->termstate
= VT52_ESC
;
2836 compatibility(ANSIMIN
);
2837 term
->termstate
= SEEN_ESC
;
2838 term
->esc_query
= FALSE
;
2841 case '\015': /* CR: Carriage return */
2843 term
->wrapnext
= FALSE
;
2844 seen_disp_event(term
);
2845 term
->paste_hold
= 0;
2847 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2849 case '\014': /* FF: Form feed */
2850 if (has_compat(SCOANSI
)) {
2851 move(term
, 0, 0, 0);
2852 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2854 term
->wrapnext
= FALSE
;
2855 seen_disp_event(term
);
2858 case '\013': /* VT: Line tabulation */
2859 compatibility(VT100
);
2860 case '\012': /* LF: Line feed */
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)
2865 if (term
->cfg
.lfhascr
)
2867 term
->wrapnext
= FALSE
;
2868 seen_disp_event(term
);
2869 term
->paste_hold
= 0;
2871 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2873 case '\t': /* HT: Character tabulation */
2875 pos old_curs
= term
->curs
;
2876 termline
*ldata
= scrlineptr(term
->curs
.y
);
2880 } while (term
->curs
.x
< term
->cols
- 1 &&
2881 !term
->tabs
[term
->curs
.x
]);
2883 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
2884 if (term
->curs
.x
>= term
->cols
/ 2)
2885 term
->curs
.x
= term
->cols
/ 2 - 1;
2887 if (term
->curs
.x
>= term
->cols
)
2888 term
->curs
.x
= term
->cols
- 1;
2891 check_selection(term
, old_curs
, term
->curs
);
2893 seen_disp_event(term
);
2897 switch (term
->termstate
) {
2899 /* Only graphic characters get this far;
2900 * ctrls are stripped above */
2902 termline
*cline
= scrlineptr(term
->curs
.y
);
2907 width
= (term
->cfg
.cjk_ambig_wide ?
2908 mk_wcwidth_cjk((wchar_t) c
) :
2909 mk_wcwidth((wchar_t) c
));
2911 if (term
->wrapnext
&& term
->wrap
&& width
> 0) {
2912 cline
->lattr
|= LATTR_WRAPPED
;
2913 if (term
->curs
.y
== term
->marg_b
)
2914 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2915 else if (term
->curs
.y
< term
->rows
- 1)
2918 term
->wrapnext
= FALSE
;
2919 cline
= scrlineptr(term
->curs
.y
);
2921 if (term
->insert
&& width
> 0)
2923 if (term
->selstate
!= NO_SELECTION
) {
2924 pos cursplus
= term
->curs
;
2926 check_selection(term
, term
->curs
, cursplus
);
2928 if (((c
& CSET_MASK
) == CSET_ASCII
||
2929 (c
& CSET_MASK
) == 0) &&
2931 logtraffic(term
->logctx
, (unsigned char) c
,
2937 * If we're about to display a double-width
2938 * character starting in the rightmost
2939 * column, then we do something special
2940 * instead. We must print a space in the
2941 * last column of the screen, then wrap;
2942 * and we also set LATTR_WRAPPED2 which
2943 * instructs subsequent cut-and-pasting not
2944 * only to splice this line to the one
2945 * after it, but to ignore the space in the
2946 * last character position as well.
2947 * (Because what was actually output to the
2948 * terminal was presumably just a sequence
2949 * of CJK characters, and we don't want a
2950 * space to be pasted in the middle of
2951 * those just because they had the
2952 * misfortune to start in the wrong parity
2953 * column. xterm concurs.)
2955 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2956 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2957 if (term
->curs
.x
== term
->cols
-1) {
2958 copy_termchar(cline
, term
->curs
.x
,
2960 cline
->lattr
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
2961 if (term
->curs
.y
== term
->marg_b
)
2962 scroll(term
, term
->marg_t
, term
->marg_b
,
2964 else if (term
->curs
.y
< term
->rows
- 1)
2967 cline
= scrlineptr(term
->curs
.y
);
2968 /* Now we must check_boundary again, of course. */
2969 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2970 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2974 clear_cc(cline
, term
->curs
.x
);
2975 cline
->chars
[term
->curs
.x
].chr
= c
;
2976 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2981 clear_cc(cline
, term
->curs
.x
);
2982 cline
->chars
[term
->curs
.x
].chr
= UCSWIDE
;
2983 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2987 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2988 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2991 clear_cc(cline
, term
->curs
.x
);
2992 cline
->chars
[term
->curs
.x
].chr
= c
;
2993 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2997 if (term
->curs
.x
> 0) {
2998 int x
= term
->curs
.x
- 1;
3000 /* If we're in wrapnext state, the character
3001 * to combine with is _here_, not to our left. */
3006 * If the previous character is
3007 * UCSWIDE, back up another one.
3009 if (cline
->chars
[x
].chr
== UCSWIDE
) {
3014 add_cc(cline
, x
, c
);
3015 seen_disp_event(term
);
3022 if (term
->curs
.x
== term
->cols
) {
3024 term
->wrapnext
= TRUE
;
3025 if (term
->wrap
&& term
->vt52_mode
) {
3026 cline
->lattr
|= LATTR_WRAPPED
;
3027 if (term
->curs
.y
== term
->marg_b
)
3028 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3029 else if (term
->curs
.y
< term
->rows
- 1)
3032 term
->wrapnext
= FALSE
;
3035 seen_disp_event(term
);
3041 * This state is virtually identical to SEEN_ESC, with the
3042 * exception that we have an OSC sequence in the pipeline,
3043 * and _if_ we see a backslash, we process it.
3047 term
->termstate
= TOPLEVEL
;
3050 /* else fall through */
3052 if (c
>= ' ' && c
<= '/') {
3053 if (term
->esc_query
)
3054 term
->esc_query
= -1;
3056 term
->esc_query
= c
;
3059 term
->termstate
= TOPLEVEL
;
3060 switch (ANSI(c
, term
->esc_query
)) {
3061 case '[': /* enter CSI mode */
3062 term
->termstate
= SEEN_CSI
;
3063 term
->esc_nargs
= 1;
3064 term
->esc_args
[0] = ARG_DEFAULT
;
3065 term
->esc_query
= FALSE
;
3067 case ']': /* OSC: xterm escape sequences */
3068 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3069 compatibility(OTHER
);
3070 term
->termstate
= SEEN_OSC
;
3071 term
->esc_args
[0] = 0;
3073 case '7': /* DECSC: save cursor */
3074 compatibility(VT100
);
3075 save_cursor(term
, TRUE
);
3077 case '8': /* DECRC: restore cursor */
3078 compatibility(VT100
);
3079 save_cursor(term
, FALSE
);
3080 seen_disp_event(term
);
3082 case '=': /* DECKPAM: Keypad application mode */
3083 compatibility(VT100
);
3084 term
->app_keypad_keys
= TRUE
;
3086 case '>': /* DECKPNM: Keypad numeric mode */
3087 compatibility(VT100
);
3088 term
->app_keypad_keys
= FALSE
;
3090 case 'D': /* IND: exactly equivalent to LF */
3091 compatibility(VT100
);
3092 if (term
->curs
.y
== term
->marg_b
)
3093 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3094 else if (term
->curs
.y
< term
->rows
- 1)
3096 term
->wrapnext
= FALSE
;
3097 seen_disp_event(term
);
3099 case 'E': /* NEL: exactly equivalent to CR-LF */
3100 compatibility(VT100
);
3102 if (term
->curs
.y
== term
->marg_b
)
3103 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3104 else if (term
->curs
.y
< term
->rows
- 1)
3106 term
->wrapnext
= FALSE
;
3107 seen_disp_event(term
);
3109 case 'M': /* RI: reverse index - backwards LF */
3110 compatibility(VT100
);
3111 if (term
->curs
.y
== term
->marg_t
)
3112 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
3113 else if (term
->curs
.y
> 0)
3115 term
->wrapnext
= FALSE
;
3116 seen_disp_event(term
);
3118 case 'Z': /* DECID: terminal type query */
3119 compatibility(VT100
);
3121 ldisc_send(term
->ldisc
, term
->id_string
,
3122 strlen(term
->id_string
), 0);
3124 case 'c': /* RIS: restore power-on settings */
3125 compatibility(VT100
);
3126 power_on(term
, TRUE
);
3127 if (term
->ldisc
) /* cause ldisc to notice changes */
3128 ldisc_send(term
->ldisc
, NULL
, 0, 0);
3129 if (term
->reset_132
) {
3130 if (!term
->cfg
.no_remote_resize
)
3131 request_resize(term
->frontend
, 80, term
->rows
);
3132 term
->reset_132
= 0;
3135 seen_disp_event(term
);
3137 case 'H': /* HTS: set a tab */
3138 compatibility(VT100
);
3139 term
->tabs
[term
->curs
.x
] = TRUE
;
3142 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3143 compatibility(VT100
);
3149 for (i
= 0; i
< term
->rows
; i
++) {
3150 ldata
= scrlineptr(i
);
3151 for (j
= 0; j
< term
->cols
; j
++) {
3152 copy_termchar(ldata
, j
,
3153 &term
->basic_erase_char
);
3154 ldata
->chars
[j
].chr
= 'E';
3156 ldata
->lattr
= LATTR_NORM
;
3159 seen_disp_event(term
);
3160 scrtop
.x
= scrtop
.y
= 0;
3162 scrbot
.y
= term
->rows
;
3163 check_selection(term
, scrtop
, scrbot
);
3167 case ANSI('3', '#'):
3168 case ANSI('4', '#'):
3169 case ANSI('5', '#'):
3170 case ANSI('6', '#'):
3171 compatibility(VT100
);
3175 switch (ANSI(c
, term
->esc_query
)) {
3176 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3179 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3182 case ANSI('5', '#'): /* DECSWL: normal */
3183 nlattr
= LATTR_NORM
;
3185 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3186 nlattr
= LATTR_WIDE
;
3189 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
3192 /* GZD4: G0 designate 94-set */
3193 case ANSI('A', '('):
3194 compatibility(VT100
);
3195 if (!term
->cfg
.no_remote_charset
)
3196 term
->cset_attr
[0] = CSET_GBCHR
;
3198 case ANSI('B', '('):
3199 compatibility(VT100
);
3200 if (!term
->cfg
.no_remote_charset
)
3201 term
->cset_attr
[0] = CSET_ASCII
;
3203 case ANSI('0', '('):
3204 compatibility(VT100
);
3205 if (!term
->cfg
.no_remote_charset
)
3206 term
->cset_attr
[0] = CSET_LINEDRW
;
3208 case ANSI('U', '('):
3209 compatibility(OTHER
);
3210 if (!term
->cfg
.no_remote_charset
)
3211 term
->cset_attr
[0] = CSET_SCOACS
;
3213 /* G1D4: G1-designate 94-set */
3214 case ANSI('A', ')'):
3215 compatibility(VT100
);
3216 if (!term
->cfg
.no_remote_charset
)
3217 term
->cset_attr
[1] = CSET_GBCHR
;
3219 case ANSI('B', ')'):
3220 compatibility(VT100
);
3221 if (!term
->cfg
.no_remote_charset
)
3222 term
->cset_attr
[1] = CSET_ASCII
;
3224 case ANSI('0', ')'):
3225 compatibility(VT100
);
3226 if (!term
->cfg
.no_remote_charset
)
3227 term
->cset_attr
[1] = CSET_LINEDRW
;
3229 case ANSI('U', ')'):
3230 compatibility(OTHER
);
3231 if (!term
->cfg
.no_remote_charset
)
3232 term
->cset_attr
[1] = CSET_SCOACS
;
3234 /* DOCS: Designate other coding system */
3235 case ANSI('8', '%'): /* Old Linux code */
3236 case ANSI('G', '%'):
3237 compatibility(OTHER
);
3238 if (!term
->cfg
.no_remote_charset
)
3241 case ANSI('@', '%'):
3242 compatibility(OTHER
);
3243 if (!term
->cfg
.no_remote_charset
)
3249 term
->termstate
= TOPLEVEL
; /* default */
3251 if (term
->esc_nargs
<= ARGS_MAX
) {
3252 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
3253 term
->esc_args
[term
->esc_nargs
- 1] = 0;
3254 term
->esc_args
[term
->esc_nargs
- 1] =
3255 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
3257 term
->termstate
= SEEN_CSI
;
3258 } else if (c
== ';') {
3259 if (++term
->esc_nargs
<= ARGS_MAX
)
3260 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
3261 term
->termstate
= SEEN_CSI
;
3262 } else if (c
< '@') {
3263 if (term
->esc_query
)
3264 term
->esc_query
= -1;
3266 term
->esc_query
= TRUE
;
3268 term
->esc_query
= c
;
3269 term
->termstate
= SEEN_CSI
;
3271 switch (ANSI(c
, term
->esc_query
)) {
3272 case 'A': /* CUU: move up N lines */
3273 move(term
, term
->curs
.x
,
3274 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3275 seen_disp_event(term
);
3277 case 'e': /* VPR: move down N lines */
3278 compatibility(ANSI
);
3280 case 'B': /* CUD: Cursor down */
3281 move(term
, term
->curs
.x
,
3282 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3283 seen_disp_event(term
);
3285 case ANSI('c', '>'): /* DA: report xterm version */
3286 compatibility(OTHER
);
3287 /* this reports xterm version 136 so that VIM can
3288 use the drag messages from the mouse reporting */
3290 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
3292 case 'a': /* HPR: move right N cols */
3293 compatibility(ANSI
);
3295 case 'C': /* CUF: Cursor right */
3296 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
3298 seen_disp_event(term
);
3300 case 'D': /* CUB: move left N cols */
3301 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
3303 seen_disp_event(term
);
3305 case 'E': /* CNL: move down N lines and CR */
3306 compatibility(ANSI
);
3308 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3309 seen_disp_event(term
);
3311 case 'F': /* CPL: move up N lines and CR */
3312 compatibility(ANSI
);
3314 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3315 seen_disp_event(term
);
3318 case '`': /* HPA: set horizontal posn */
3319 compatibility(ANSI
);
3320 move(term
, def(term
->esc_args
[0], 1) - 1,
3322 seen_disp_event(term
);
3324 case 'd': /* VPA: set vertical posn */
3325 compatibility(ANSI
);
3326 move(term
, term
->curs
.x
,
3327 ((term
->dec_om ? term
->marg_t
: 0) +
3328 def(term
->esc_args
[0], 1) - 1),
3329 (term
->dec_om ?
2 : 0));
3330 seen_disp_event(term
);
3333 case 'f': /* HVP: set horz and vert posns at once */
3334 if (term
->esc_nargs
< 2)
3335 term
->esc_args
[1] = ARG_DEFAULT
;
3336 move(term
, def(term
->esc_args
[1], 1) - 1,
3337 ((term
->dec_om ? term
->marg_t
: 0) +
3338 def(term
->esc_args
[0], 1) - 1),
3339 (term
->dec_om ?
2 : 0));
3340 seen_disp_event(term
);
3342 case 'J': /* ED: erase screen or parts of it */
3344 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3347 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
3350 seen_disp_event(term
);
3352 case 'K': /* EL: erase line or parts of it */
3354 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3357 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
3359 seen_disp_event(term
);
3361 case 'L': /* IL: insert lines */
3362 compatibility(VT102
);
3363 if (term
->curs
.y
<= term
->marg_b
)
3364 scroll(term
, term
->curs
.y
, term
->marg_b
,
3365 -def(term
->esc_args
[0], 1), FALSE
);
3366 seen_disp_event(term
);
3368 case 'M': /* DL: delete lines */
3369 compatibility(VT102
);
3370 if (term
->curs
.y
<= term
->marg_b
)
3371 scroll(term
, term
->curs
.y
, term
->marg_b
,
3372 def(term
->esc_args
[0], 1),
3374 seen_disp_event(term
);
3376 case '@': /* ICH: insert chars */
3377 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3378 compatibility(VT102
);
3379 insch(term
, def(term
->esc_args
[0], 1));
3380 seen_disp_event(term
);
3382 case 'P': /* DCH: delete chars */
3383 compatibility(VT102
);
3384 insch(term
, -def(term
->esc_args
[0], 1));
3385 seen_disp_event(term
);
3387 case 'c': /* DA: terminal type query */
3388 compatibility(VT100
);
3389 /* This is the response for a VT102 */
3391 ldisc_send(term
->ldisc
, term
->id_string
,
3392 strlen(term
->id_string
), 0);
3394 case 'n': /* DSR: cursor position query */
3396 if (term
->esc_args
[0] == 6) {
3398 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
3400 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
3401 } else if (term
->esc_args
[0] == 5) {
3402 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
3406 case 'h': /* SM: toggle modes to high */
3408 compatibility(VT100
);
3411 for (i
= 0; i
< term
->esc_nargs
; i
++)
3412 toggle_mode(term
, term
->esc_args
[i
],
3413 term
->esc_query
, TRUE
);
3416 case 'i': /* MC: Media copy */
3418 compatibility(VT100
);
3420 if (term
->esc_nargs
!= 1) break;
3421 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
3422 term
->printing
= TRUE
;
3423 term
->only_printing
= !term
->esc_query
;
3424 term
->print_state
= 0;
3425 term_print_setup(term
);
3426 } else if (term
->esc_args
[0] == 4 &&
3428 term_print_finish(term
);
3432 case 'l': /* RM: toggle modes to low */
3434 compatibility(VT100
);
3437 for (i
= 0; i
< term
->esc_nargs
; i
++)
3438 toggle_mode(term
, term
->esc_args
[i
],
3439 term
->esc_query
, FALSE
);
3442 case 'g': /* TBC: clear tabs */
3443 compatibility(VT100
);
3444 if (term
->esc_nargs
== 1) {
3445 if (term
->esc_args
[0] == 0) {
3446 term
->tabs
[term
->curs
.x
] = FALSE
;
3447 } else if (term
->esc_args
[0] == 3) {
3449 for (i
= 0; i
< term
->cols
; i
++)
3450 term
->tabs
[i
] = FALSE
;
3454 case 'r': /* DECSTBM: set scroll margins */
3455 compatibility(VT100
);
3456 if (term
->esc_nargs
<= 2) {
3458 top
= def(term
->esc_args
[0], 1) - 1;
3459 bot
= (term
->esc_nargs
<= 1
3460 || term
->esc_args
[1] == 0 ?
3462 def(term
->esc_args
[1], term
->rows
)) - 1;
3463 if (bot
>= term
->rows
)
3464 bot
= term
->rows
- 1;
3465 /* VTTEST Bug 9 - if region is less than 2 lines
3466 * don't change region.
3468 if (bot
- top
> 0) {
3473 * I used to think the cursor should be
3474 * placed at the top of the newly marginned
3475 * area. Apparently not: VMS TPU falls over
3478 * Well actually it should for
3481 term
->curs
.y
= (term
->dec_om ?
3483 seen_disp_event(term
);
3487 case 'm': /* SGR: set graphics rendition */
3490 * A VT100 without the AVO only had one
3491 * attribute, either underline or
3492 * reverse video depending on the
3493 * cursor type, this was selected by
3497 * This is sometimes DIM, eg on the
3500 * This is sometimes INVIS various ANSI.
3502 * This like 22 disables BOLD, DIM and INVIS
3504 * The ANSI colours appear on any
3505 * terminal that has colour (obviously)
3506 * but the interaction between sgr0 and
3507 * the colours varies but is usually
3508 * related to the background colour
3509 * erase item. The interaction between
3510 * colour attributes and the mono ones
3511 * is also very implementation
3514 * The 39 and 49 attributes are likely
3515 * to be unimplemented.
3518 for (i
= 0; i
< term
->esc_nargs
; i
++) {
3519 switch (def(term
->esc_args
[i
], 0)) {
3520 case 0: /* restore defaults */
3521 term
->curr_attr
= term
->default_attr
;
3523 case 1: /* enable bold */
3524 compatibility(VT100AVO
);
3525 term
->curr_attr
|= ATTR_BOLD
;
3527 case 21: /* (enable double underline) */
3528 compatibility(OTHER
);
3529 case 4: /* enable underline */
3530 compatibility(VT100AVO
);
3531 term
->curr_attr
|= ATTR_UNDER
;
3533 case 5: /* enable blink */
3534 compatibility(VT100AVO
);
3535 term
->curr_attr
|= ATTR_BLINK
;
3537 case 6: /* SCO light bkgrd */
3538 compatibility(SCOANSI
);
3539 term
->blink_is_real
= FALSE
;
3540 term
->curr_attr
|= ATTR_BLINK
;
3541 term_schedule_tblink(term
);
3543 case 7: /* enable reverse video */
3544 term
->curr_attr
|= ATTR_REVERSE
;
3546 case 10: /* SCO acs off */
3547 compatibility(SCOANSI
);
3548 if (term
->cfg
.no_remote_charset
) break;
3549 term
->sco_acs
= 0; break;
3550 case 11: /* SCO acs on */
3551 compatibility(SCOANSI
);
3552 if (term
->cfg
.no_remote_charset
) break;
3553 term
->sco_acs
= 1; break;
3554 case 12: /* SCO acs on, |0x80 */
3555 compatibility(SCOANSI
);
3556 if (term
->cfg
.no_remote_charset
) break;
3557 term
->sco_acs
= 2; break;
3558 case 22: /* disable bold */
3559 compatibility2(OTHER
, VT220
);
3560 term
->curr_attr
&= ~ATTR_BOLD
;
3562 case 24: /* disable underline */
3563 compatibility2(OTHER
, VT220
);
3564 term
->curr_attr
&= ~ATTR_UNDER
;
3566 case 25: /* disable blink */
3567 compatibility2(OTHER
, VT220
);
3568 term
->curr_attr
&= ~ATTR_BLINK
;
3570 case 27: /* disable reverse video */
3571 compatibility2(OTHER
, VT220
);
3572 term
->curr_attr
&= ~ATTR_REVERSE
;
3583 term
->curr_attr
&= ~ATTR_FGMASK
;
3585 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3595 /* aixterm-style bright foreground */
3596 term
->curr_attr
&= ~ATTR_FGMASK
;
3598 ((term
->esc_args
[i
] - 90 + 8)
3601 case 39: /* default-foreground */
3602 term
->curr_attr
&= ~ATTR_FGMASK
;
3603 term
->curr_attr
|= ATTR_DEFFG
;
3614 term
->curr_attr
&= ~ATTR_BGMASK
;
3616 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3626 /* aixterm-style bright background */
3627 term
->curr_attr
&= ~ATTR_BGMASK
;
3629 ((term
->esc_args
[i
] - 100 + 8)
3632 case 49: /* default-background */
3633 term
->curr_attr
&= ~ATTR_BGMASK
;
3634 term
->curr_attr
|= ATTR_DEFBG
;
3636 case 38: /* xterm 256-colour mode */
3637 if (i
+2 < term
->esc_nargs
&&
3638 term
->esc_args
[i
+1] == 5) {
3639 term
->curr_attr
&= ~ATTR_FGMASK
;
3641 ((term
->esc_args
[i
+2] & 0xFF)
3646 case 48: /* xterm 256-colour mode */
3647 if (i
+2 < term
->esc_nargs
&&
3648 term
->esc_args
[i
+1] == 5) {
3649 term
->curr_attr
&= ~ATTR_BGMASK
;
3651 ((term
->esc_args
[i
+2] & 0xFF)
3658 set_erase_char(term
);
3661 case 's': /* save cursor */
3662 save_cursor(term
, TRUE
);
3664 case 'u': /* restore cursor */
3665 save_cursor(term
, FALSE
);
3666 seen_disp_event(term
);
3668 case 't': /* DECSLPP: set page size - ie window height */
3670 * VT340/VT420 sequence DECSLPP, DEC only allows values
3671 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3672 * illegal values (eg first arg 1..9) for window changing
3675 if (term
->esc_nargs
<= 1
3676 && (term
->esc_args
[0] < 1 ||
3677 term
->esc_args
[0] >= 24)) {
3678 compatibility(VT340TEXT
);
3679 if (!term
->cfg
.no_remote_resize
)
3680 request_resize(term
->frontend
, term
->cols
,
3681 def(term
->esc_args
[0], 24));
3683 } else if (term
->esc_nargs
>= 1 &&
3684 term
->esc_args
[0] >= 1 &&
3685 term
->esc_args
[0] < 24) {
3686 compatibility(OTHER
);
3688 switch (term
->esc_args
[0]) {
3692 set_iconic(term
->frontend
, FALSE
);
3695 set_iconic(term
->frontend
, TRUE
);
3698 if (term
->esc_nargs
>= 3) {
3699 if (!term
->cfg
.no_remote_resize
)
3700 move_window(term
->frontend
,
3701 def(term
->esc_args
[1], 0),
3702 def(term
->esc_args
[2], 0));
3706 /* We should resize the window to a given
3707 * size in pixels here, but currently our
3708 * resizing code isn't healthy enough to
3713 set_zorder(term
->frontend
, TRUE
);
3716 /* move to bottom */
3717 set_zorder(term
->frontend
, FALSE
);
3720 refresh_window(term
->frontend
);
3723 if (term
->esc_nargs
>= 3) {
3724 if (!term
->cfg
.no_remote_resize
)
3725 request_resize(term
->frontend
,
3726 def(term
->esc_args
[2], term
->cfg
.width
),
3727 def(term
->esc_args
[1], term
->cfg
.height
));
3731 if (term
->esc_nargs
>= 2)
3732 set_zoomed(term
->frontend
,
3738 ldisc_send(term
->ldisc
,
3739 is_iconic(term
->frontend
) ?
3740 "\033[1t" : "\033[2t", 4, 0);
3744 get_window_pos(term
->frontend
, &x
, &y
);
3745 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3746 ldisc_send(term
->ldisc
, buf
, len
, 0);
3751 get_window_pixels(term
->frontend
, &x
, &y
);
3752 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
3753 ldisc_send(term
->ldisc
, buf
, len
, 0);
3758 len
= sprintf(buf
, "\033[8;%d;%dt",
3759 term
->rows
, term
->cols
);
3760 ldisc_send(term
->ldisc
, buf
, len
, 0);
3765 * Hmmm. Strictly speaking we
3766 * should return `the size of the
3767 * screen in characters', but
3768 * that's not easy: (a) window
3769 * furniture being what it is it's
3770 * hard to compute, and (b) in
3771 * resize-font mode maximising the
3772 * window wouldn't change the
3773 * number of characters. *shrug*. I
3774 * think we'll ignore it for the
3775 * moment and see if anyone
3776 * complains, and then ask them
3777 * what they would like it to do.
3782 !term
->cfg
.no_remote_qtitle
) {
3783 p
= get_window_title(term
->frontend
, TRUE
);
3785 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3786 ldisc_send(term
->ldisc
, p
, len
, 0);
3787 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3792 !term
->cfg
.no_remote_qtitle
) {
3793 p
= get_window_title(term
->frontend
,FALSE
);
3795 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3796 ldisc_send(term
->ldisc
, p
, len
, 0);
3797 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3803 case 'S': /* SU: Scroll up */
3804 compatibility(SCOANSI
);
3805 scroll(term
, term
->marg_t
, term
->marg_b
,
3806 def(term
->esc_args
[0], 1), TRUE
);
3807 term
->wrapnext
= FALSE
;
3808 seen_disp_event(term
);
3810 case 'T': /* SD: Scroll down */
3811 compatibility(SCOANSI
);
3812 scroll(term
, term
->marg_t
, term
->marg_b
,
3813 -def(term
->esc_args
[0], 1), TRUE
);
3814 term
->wrapnext
= FALSE
;
3815 seen_disp_event(term
);
3817 case ANSI('|', '*'): /* DECSNLS */
3819 * Set number of lines on screen
3820 * VT420 uses VGA like hardware and can
3821 * support any size in reasonable range
3822 * (24..49 AIUI) with no default specified.
3824 compatibility(VT420
);
3825 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3826 if (!term
->cfg
.no_remote_resize
)
3827 request_resize(term
->frontend
, term
->cols
,
3828 def(term
->esc_args
[0],
3833 case ANSI('|', '$'): /* DECSCPP */
3835 * Set number of columns per page
3836 * Docs imply range is only 80 or 132, but
3839 compatibility(VT340TEXT
);
3840 if (term
->esc_nargs
<= 1) {
3841 if (!term
->cfg
.no_remote_resize
)
3842 request_resize(term
->frontend
,
3843 def(term
->esc_args
[0],
3844 term
->cfg
.width
), term
->rows
);
3848 case 'X': /* ECH: write N spaces w/o moving cursor */
3849 /* XXX VTTEST says this is vt220, vt510 manual
3851 compatibility(ANSIMIN
);
3853 int n
= def(term
->esc_args
[0], 1);
3855 int p
= term
->curs
.x
;
3856 termline
*cline
= scrlineptr(term
->curs
.y
);
3858 if (n
> term
->cols
- term
->curs
.x
)
3859 n
= term
->cols
- term
->curs
.x
;
3860 cursplus
= term
->curs
;
3862 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3863 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
3864 check_selection(term
, term
->curs
, cursplus
);
3866 copy_termchar(cline
, p
++,
3868 seen_disp_event(term
);
3871 case 'x': /* DECREQTPARM: report terminal characteristics */
3872 compatibility(VT100
);
3875 int i
= def(term
->esc_args
[0], 0);
3876 if (i
== 0 || i
== 1) {
3877 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
3879 ldisc_send(term
->ldisc
, buf
, 20, 0);
3884 compatibility(OTHER
);
3886 int i
= def(term
->esc_args
[0], 1);
3887 pos old_curs
= term
->curs
;
3889 for(;i
>0 && term
->curs
.x
>0; i
--) {
3892 } while (term
->curs
.x
>0 &&
3893 !term
->tabs
[term
->curs
.x
]);
3895 check_selection(term
, old_curs
, term
->curs
);
3898 case ANSI('c', '='): /* Hide or Show Cursor */
3899 compatibility(SCOANSI
);
3900 switch(term
->esc_args
[0]) {
3901 case 0: /* hide cursor */
3902 term
->cursor_on
= FALSE
;
3904 case 1: /* restore cursor */
3905 term
->big_cursor
= FALSE
;
3906 term
->cursor_on
= TRUE
;
3908 case 2: /* block cursor */
3909 term
->big_cursor
= TRUE
;
3910 term
->cursor_on
= TRUE
;
3914 case ANSI('C', '='):
3916 * set cursor start on scanline esc_args[0] and
3917 * end on scanline esc_args[1].If you set
3918 * the bottom scan line to a value less than
3919 * the top scan line, the cursor will disappear.
3921 compatibility(SCOANSI
);
3922 if (term
->esc_nargs
>= 2) {
3923 if (term
->esc_args
[0] > term
->esc_args
[1])
3924 term
->cursor_on
= FALSE
;
3926 term
->cursor_on
= TRUE
;
3929 case ANSI('D', '='):
3930 compatibility(SCOANSI
);
3931 term
->blink_is_real
= FALSE
;
3932 term_schedule_tblink(term
);
3933 if (term
->esc_args
[0]>=1)
3934 term
->curr_attr
|= ATTR_BLINK
;
3936 term
->curr_attr
&= ~ATTR_BLINK
;
3938 case ANSI('E', '='):
3939 compatibility(SCOANSI
);
3940 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
3941 term_schedule_tblink(term
);
3943 case ANSI('F', '='): /* set normal foreground */
3944 compatibility(SCOANSI
);
3945 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3947 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3948 (term
->esc_args
[0] & 0x8)) <<
3950 term
->curr_attr
&= ~ATTR_FGMASK
;
3951 term
->curr_attr
|= colour
;
3952 term
->default_attr
&= ~ATTR_FGMASK
;
3953 term
->default_attr
|= colour
;
3954 set_erase_char(term
);
3957 case ANSI('G', '='): /* set normal background */
3958 compatibility(SCOANSI
);
3959 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3961 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3962 (term
->esc_args
[0] & 0x8)) <<
3964 term
->curr_attr
&= ~ATTR_BGMASK
;
3965 term
->curr_attr
|= colour
;
3966 term
->default_attr
&= ~ATTR_BGMASK
;
3967 term
->default_attr
|= colour
;
3968 set_erase_char(term
);
3971 case ANSI('L', '='):
3972 compatibility(SCOANSI
);
3973 term
->use_bce
= (term
->esc_args
[0] <= 0);
3974 set_erase_char(term
);
3976 case ANSI('p', '"'): /* DECSCL: set compat level */
3978 * Allow the host to make this emulator a
3979 * 'perfect' VT102. This first appeared in
3980 * the VT220, but we do need to get back to
3981 * PuTTY mode so I won't check it.
3983 * The arg in 40..42,50 are a PuTTY extension.
3984 * The 2nd arg, 8bit vs 7bit is not checked.
3986 * Setting VT102 mode should also change
3987 * the Fkeys to generate PF* codes as a
3988 * real VT102 has no Fkeys. The VT220 does
3989 * this, F11..F13 become ESC,BS,LF other
3990 * Fkeys send nothing.
3992 * Note ESC c will NOT change this!
3995 switch (term
->esc_args
[0]) {
3997 term
->compatibility_level
&= ~TM_VTXXX
;
3998 term
->compatibility_level
|= TM_VT102
;
4001 term
->compatibility_level
&= ~TM_VTXXX
;
4002 term
->compatibility_level
|= TM_VT220
;
4006 if (term
->esc_args
[0] > 60 &&
4007 term
->esc_args
[0] < 70)
4008 term
->compatibility_level
|= TM_VTXXX
;
4012 term
->compatibility_level
&= TM_VTXXX
;
4015 term
->compatibility_level
= TM_PUTTY
;
4018 term
->compatibility_level
= TM_SCOANSI
;
4022 term
->compatibility_level
= TM_PUTTY
;
4028 /* Change the response to CSI c */
4029 if (term
->esc_args
[0] == 50) {
4032 strcpy(term
->id_string
, "\033[?");
4033 for (i
= 1; i
< term
->esc_nargs
; i
++) {
4035 strcat(term
->id_string
, ";");
4036 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
4037 strcat(term
->id_string
, lbuf
);
4039 strcat(term
->id_string
, "c");
4042 /* Is this a good idea ?
4043 * Well we should do a soft reset at this point ...
4045 if (!has_compat(VT420
) && has_compat(VT100
)) {
4046 if (!term
->cfg
.no_remote_resize
) {
4047 if (term
->reset_132
)
4048 request_resize(132, 24);
4050 request_resize(80, 24);
4058 term
->osc_w
= FALSE
;
4060 case 'P': /* Linux palette sequence */
4061 term
->termstate
= SEEN_OSC_P
;
4062 term
->osc_strlen
= 0;
4064 case 'R': /* Linux palette reset */
4065 palette_reset(term
->frontend
);
4066 term_invalidate(term
);
4067 term
->termstate
= TOPLEVEL
;
4069 case 'W': /* word-set */
4070 term
->termstate
= SEEN_OSC_W
;
4083 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4087 * Grotty hack to support xterm and DECterm title
4088 * sequences concurrently.
4090 if (term
->esc_args
[0] == 2) {
4091 term
->esc_args
[0] = 1;
4094 /* else fall through */
4096 term
->termstate
= OSC_STRING
;
4097 term
->osc_strlen
= 0;
4102 * This OSC stuff is EVIL. It takes just one character to get into
4103 * sysline mode and it's not initially obvious how to get out.
4104 * So I've added CR and LF as string aborts.
4105 * This shouldn't effect compatibility as I believe embedded
4106 * control characters are supposed to be interpreted (maybe?)
4107 * and they don't display anything useful anyway.
4111 if (c
== '\012' || c
== '\015') {
4112 term
->termstate
= TOPLEVEL
;
4113 } else if (c
== 0234 || c
== '\007') {
4115 * These characters terminate the string; ST and BEL
4116 * terminate the sequence and trigger instant
4117 * processing of it, whereas ESC goes back to SEEN_ESC
4118 * mode unless it is followed by \, in which case it is
4119 * synonymous with ST in the first place.
4122 term
->termstate
= TOPLEVEL
;
4123 } else if (c
== '\033')
4124 term
->termstate
= OSC_MAYBE_ST
;
4125 else if (term
->osc_strlen
< OSC_STR_MAX
)
4126 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
4130 int max
= (term
->osc_strlen
== 0 ?
21 : 15);
4132 if ((int)c
>= '0' && (int)c
<= '9')
4134 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
4136 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
4139 term
->termstate
= TOPLEVEL
;
4142 term
->osc_string
[term
->osc_strlen
++] = val
;
4143 if (term
->osc_strlen
>= 7) {
4144 palette_set(term
->frontend
, term
->osc_string
[0],
4145 term
->osc_string
[1] * 16 + term
->osc_string
[2],
4146 term
->osc_string
[3] * 16 + term
->osc_string
[4],
4147 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
4148 term_invalidate(term
);
4149 term
->termstate
= TOPLEVEL
;
4165 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4168 term
->termstate
= OSC_STRING
;
4169 term
->osc_strlen
= 0;
4173 term
->termstate
= TOPLEVEL
;
4174 seen_disp_event(term
);
4177 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
4180 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
4183 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
4186 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
4189 * From the VT100 Manual
4190 * NOTE: The special graphics characters in the VT100
4191 * are different from those in the VT52
4193 * From VT102 manual:
4194 * 137 _ Blank - Same
4195 * 140 ` Reserved - Humm.
4196 * 141 a Solid rectangle - Similar
4197 * 142 b 1/ - Top half of fraction for the
4198 * 143 c 3/ - subscript numbers below.
4201 * 146 f Degrees - Same
4202 * 147 g Plus or minus - Same
4204 * 151 i Ellipsis (dots)
4207 * 154 l Bar at scan 0
4208 * 155 m Bar at scan 1
4209 * 156 n Bar at scan 2
4210 * 157 o Bar at scan 3 - Similar
4211 * 160 p Bar at scan 4 - Similar
4212 * 161 q Bar at scan 5 - Similar
4213 * 162 r Bar at scan 6 - Same
4214 * 163 s Bar at scan 7 - Similar
4229 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
4232 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
4235 move(term
, 0, 0, 0);
4238 if (term
->curs
.y
== 0)
4239 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
4240 else if (term
->curs
.y
> 0)
4242 term
->wrapnext
= FALSE
;
4245 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4249 erase_lots(term
, TRUE
, FALSE
, TRUE
);
4253 /* XXX Print cursor line */
4256 /* XXX Start controller mode */
4259 /* XXX Stop controller mode */
4263 term
->termstate
= VT52_Y1
;
4267 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
4270 term
->app_keypad_keys
= TRUE
;
4273 term
->app_keypad_keys
= FALSE
;
4276 /* XXX This should switch to VT100 mode not current or default
4277 * VT mode. But this will only have effect in a VT220+
4280 term
->vt52_mode
= FALSE
;
4281 term
->blink_is_real
= term
->cfg
.blinktext
;
4282 term_schedule_tblink(term
);
4286 /* XXX Enter auto print mode */
4289 /* XXX Exit auto print mode */
4292 /* XXX Print screen */
4298 /* compatibility(ATARI) */
4299 move(term
, 0, 0, 0);
4300 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4304 /* compatibility(ATARI) */
4305 if (term
->curs
.y
<= term
->marg_b
)
4306 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
4309 /* compatibility(ATARI) */
4310 if (term
->curs
.y
<= term
->marg_b
)
4311 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
4314 /* compatibility(ATARI) */
4315 term
->termstate
= VT52_FG
;
4318 /* compatibility(ATARI) */
4319 term
->termstate
= VT52_BG
;
4322 /* compatibility(ATARI) */
4323 erase_lots(term
, FALSE
, TRUE
, FALSE
);
4327 /* compatibility(ATARI) */
4328 term
->cursor_on
= TRUE
;
4331 /* compatibility(ATARI) */
4332 term
->cursor_on
= FALSE
;
4334 /* case 'j': Save cursor position - broken on ST */
4335 /* case 'k': Restore cursor position */
4337 /* compatibility(ATARI) */
4338 erase_lots(term
, TRUE
, TRUE
, TRUE
);
4340 term
->wrapnext
= FALSE
;
4343 /* compatibility(ATARI) */
4344 erase_lots(term
, TRUE
, TRUE
, FALSE
);
4347 /* compatibility(ATARI) */
4348 term
->curr_attr
|= ATTR_REVERSE
;
4351 /* compatibility(ATARI) */
4352 term
->curr_attr
&= ~ATTR_REVERSE
;
4354 case 'v': /* wrap Autowrap on - Wyse style */
4355 /* compatibility(ATARI) */
4358 case 'w': /* Autowrap off */
4359 /* compatibility(ATARI) */
4364 /* compatibility(OTHER) */
4365 term
->vt52_bold
= FALSE
;
4366 term
->curr_attr
= ATTR_DEFAULT
;
4367 set_erase_char(term
);
4370 /* compatibility(VI50) */
4371 term
->curr_attr
|= ATTR_UNDER
;
4374 /* compatibility(VI50) */
4375 term
->curr_attr
&= ~ATTR_UNDER
;
4378 /* compatibility(VI50) */
4379 term
->vt52_bold
= TRUE
;
4380 term
->curr_attr
|= ATTR_BOLD
;
4383 /* compatibility(VI50) */
4384 term
->vt52_bold
= FALSE
;
4385 term
->curr_attr
&= ~ATTR_BOLD
;
4391 term
->termstate
= VT52_Y2
;
4392 move(term
, term
->curs
.x
, c
- ' ', 0);
4395 term
->termstate
= TOPLEVEL
;
4396 move(term
, c
- ' ', term
->curs
.y
, 0);
4401 term
->termstate
= TOPLEVEL
;
4402 term
->curr_attr
&= ~ATTR_FGMASK
;
4403 term
->curr_attr
&= ~ATTR_BOLD
;
4404 term
->curr_attr
|= (c
& 0xF) << ATTR_FGSHIFT
;
4405 set_erase_char(term
);
4408 term
->termstate
= TOPLEVEL
;
4409 term
->curr_attr
&= ~ATTR_BGMASK
;
4410 term
->curr_attr
&= ~ATTR_BLINK
;
4411 term
->curr_attr
|= (c
& 0xF) << ATTR_BGSHIFT
;
4412 set_erase_char(term
);
4415 default: break; /* placate gcc warning about enum use */
4417 if (term
->selstate
!= NO_SELECTION
) {
4418 pos cursplus
= term
->curs
;
4420 check_selection(term
, term
->curs
, cursplus
);
4424 term_print_flush(term
);
4425 if (term
->cfg
.logflush
)
4426 logflush(term
->logctx
);
4430 * To prevent having to run the reasonably tricky bidi algorithm
4431 * too many times, we maintain a cache of the last lineful of data
4432 * fed to the algorithm on each line of the display.
4434 static int term_bidi_cache_hit(Terminal
*term
, int line
,
4435 termchar
*lbefore
, int width
)
4439 if (!term
->pre_bidi_cache
)
4440 return FALSE
; /* cache doesn't even exist yet! */
4442 if (line
>= term
->bidi_cache_size
)
4443 return FALSE
; /* cache doesn't have this many lines */
4445 if (!term
->pre_bidi_cache
[line
].chars
)
4446 return FALSE
; /* cache doesn't contain _this_ line */
4448 if (term
->pre_bidi_cache
[line
].width
!= width
)
4449 return FALSE
; /* line is wrong width */
4451 for (i
= 0; i
< width
; i
++)
4452 if (!termchars_equal(term
->pre_bidi_cache
[line
].chars
+i
, lbefore
+i
))
4453 return FALSE
; /* line doesn't match cache */
4455 return TRUE
; /* it didn't match. */
4458 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
4459 termchar
*lafter
, bidi_char
*wcTo
,
4460 int width
, int size
)
4464 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
4465 int j
= term
->bidi_cache_size
;
4466 term
->bidi_cache_size
= line
+1;
4467 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
4468 term
->bidi_cache_size
,
4469 struct bidi_cache_entry
);
4470 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
4471 term
->bidi_cache_size
,
4472 struct bidi_cache_entry
);
4473 while (j
< term
->bidi_cache_size
) {
4474 term
->pre_bidi_cache
[j
].chars
=
4475 term
->post_bidi_cache
[j
].chars
= NULL
;
4476 term
->pre_bidi_cache
[j
].width
=
4477 term
->post_bidi_cache
[j
].width
= -1;
4478 term
->pre_bidi_cache
[j
].forward
=
4479 term
->post_bidi_cache
[j
].forward
= NULL
;
4480 term
->pre_bidi_cache
[j
].backward
=
4481 term
->post_bidi_cache
[j
].backward
= NULL
;
4486 sfree(term
->pre_bidi_cache
[line
].chars
);
4487 sfree(term
->post_bidi_cache
[line
].chars
);
4488 sfree(term
->post_bidi_cache
[line
].forward
);
4489 sfree(term
->post_bidi_cache
[line
].backward
);
4491 term
->pre_bidi_cache
[line
].width
= width
;
4492 term
->pre_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4493 term
->post_bidi_cache
[line
].width
= width
;
4494 term
->post_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4495 term
->post_bidi_cache
[line
].forward
= snewn(width
, int);
4496 term
->post_bidi_cache
[line
].backward
= snewn(width
, int);
4498 memcpy(term
->pre_bidi_cache
[line
].chars
, lbefore
, size
* TSIZE
);
4499 memcpy(term
->post_bidi_cache
[line
].chars
, lafter
, size
* TSIZE
);
4500 memset(term
->post_bidi_cache
[line
].forward
, 0, width
* sizeof(int));
4501 memset(term
->post_bidi_cache
[line
].backward
, 0, width
* sizeof(int));
4503 for (i
= 0; i
< width
; i
++) {
4504 int p
= wcTo
[i
].index
;
4506 assert(0 <= p
&& p
< width
);
4508 term
->post_bidi_cache
[line
].backward
[i
] = p
;
4509 term
->post_bidi_cache
[line
].forward
[p
] = i
;
4514 * Prepare the bidi information for a screen line. Returns the
4515 * transformed list of termchars, or NULL if no transformation at
4516 * all took place (because bidi is disabled). If return was
4517 * non-NULL, auxiliary information such as the forward and reverse
4518 * mappings of permutation position are available in
4519 * term->post_bidi_cache[scr_y].*.
4521 static termchar
*term_bidi_line(Terminal
*term
, struct termline
*ldata
,
4527 /* Do Arabic shaping and bidi. */
4528 if(!term
->cfg
.bidi
|| !term
->cfg
.arabicshaping
) {
4530 if (!term_bidi_cache_hit(term
, scr_y
, ldata
->chars
, term
->cols
)) {
4532 if (term
->wcFromTo_size
< term
->cols
) {
4533 term
->wcFromTo_size
= term
->cols
;
4534 term
->wcFrom
= sresize(term
->wcFrom
, term
->wcFromTo_size
,
4536 term
->wcTo
= sresize(term
->wcTo
, term
->wcFromTo_size
,
4540 for(it
=0; it
<term
->cols
; it
++)
4542 unsigned long uc
= (ldata
->chars
[it
].chr
);
4544 switch (uc
& CSET_MASK
) {
4546 if (!term
->cfg
.rawcnp
) {
4547 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4551 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4554 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4557 switch (uc
& CSET_MASK
) {
4559 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4562 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4566 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4568 term
->wcFrom
[it
].index
= it
;
4572 do_bidi(term
->wcFrom
, term
->cols
);
4574 /* this is saved iff done from inside the shaping */
4575 if(!term
->cfg
.bidi
&& term
->cfg
.arabicshaping
)
4576 for(it
=0; it
<term
->cols
; it
++)
4577 term
->wcTo
[it
] = term
->wcFrom
[it
];
4579 if(!term
->cfg
.arabicshaping
)
4580 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4582 if (term
->ltemp_size
< ldata
->size
) {
4583 term
->ltemp_size
= ldata
->size
;
4584 term
->ltemp
= sresize(term
->ltemp
, term
->ltemp_size
,
4588 memcpy(term
->ltemp
, ldata
->chars
, ldata
->size
* TSIZE
);
4590 for(it
=0; it
<term
->cols
; it
++)
4592 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4593 if (term
->ltemp
[it
].cc_next
)
4594 term
->ltemp
[it
].cc_next
-=
4595 it
- term
->wcTo
[it
].index
;
4597 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4598 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4600 term_bidi_cache_store(term
, scr_y
, ldata
->chars
,
4601 term
->ltemp
, term
->wcTo
,
4602 term
->cols
, ldata
->size
);
4604 lchars
= term
->ltemp
;
4606 lchars
= term
->post_bidi_cache
[scr_y
].chars
;
4616 * Given a context, update the window. Out of paranoia, we don't
4617 * allow WM_PAINT responses to do scrolling optimisations.
4619 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
4621 int i
, j
, our_curs_y
, our_curs_x
;
4626 #ifdef OPTIMISE_SCROLL
4627 struct scrollregion
*sr
;
4628 #endif /* OPTIMISE_SCROLL */
4632 ch
= snewn(chlen
, wchar_t);
4634 newline
= snewn(term
->cols
, termchar
);
4636 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
4639 * screen array, disptop, scrtop,
4641 * cfg.blinkpc, blink_is_real, tblinker,
4642 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4645 /* Has the cursor position or type changed ? */
4646 if (term
->cursor_on
) {
4647 if (term
->has_focus
) {
4648 if (term
->cblinker
|| !term
->cfg
.blink_cur
)
4649 cursor
= TATTR_ACTCURS
;
4653 cursor
= TATTR_PASCURS
;
4655 cursor
|= TATTR_RIGHTCURS
;
4658 our_curs_y
= term
->curs
.y
- term
->disptop
;
4661 * Adjust the cursor position:
4663 * - in the case where it's resting on the right-hand half
4664 * of a CJK wide character. xterm's behaviour here,
4665 * which seems adequate to me, is to display the cursor
4666 * covering the _whole_ character, exactly as if it were
4667 * one space to the left.
4669 termline
*ldata
= lineptr(term
->curs
.y
);
4672 our_curs_x
= term
->curs
.x
;
4674 if ( (lchars
= term_bidi_line(term
, ldata
, our_curs_y
)) != NULL
) {
4675 our_curs_x
= term
->post_bidi_cache
[our_curs_y
].forward
[our_curs_x
];
4677 lchars
= ldata
->chars
;
4679 if (our_curs_x
> 0 &&
4680 lchars
[our_curs_x
].chr
== UCSWIDE
)
4687 * If the cursor is not where it was last time we painted, and
4688 * its previous position is visible on screen, invalidate its
4689 * previous position.
4691 if (term
->dispcursy
>= 0 &&
4692 (term
->curstype
!= cursor
||
4693 term
->dispcursy
!= our_curs_y
||
4694 term
->dispcursx
!= our_curs_x
)) {
4695 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
4698 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
4699 dispcurs
[-1].attr
|= ATTR_INVALID
;
4700 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
4701 dispcurs
[1].attr
|= ATTR_INVALID
;
4702 dispcurs
->attr
|= ATTR_INVALID
;
4706 term
->dispcursx
= term
->dispcursy
= -1;
4708 #ifdef OPTIMISE_SCROLL
4710 sr
= term
->scrollhead
;
4712 struct scrollregion
*next
= sr
->next
;
4713 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
4717 term
->scrollhead
= term
->scrolltail
= NULL
;
4718 #endif /* OPTIMISE_SCROLL */
4720 /* The normal screen data */
4721 for (i
= 0; i
< term
->rows
; i
++) {
4724 int dirty_line
, dirty_run
, selected
;
4725 unsigned long attr
= 0, cset
= 0;
4726 int updated_line
= 0;
4729 int last_run_dirty
= 0;
4730 int laststart
, dirtyrect
;
4733 scrpos
.y
= i
+ term
->disptop
;
4734 ldata
= lineptr(scrpos
.y
);
4736 /* Do Arabic shaping and bidi. */
4737 lchars
= term_bidi_line(term
, ldata
, i
);
4739 backward
= term
->post_bidi_cache
[i
].backward
;
4741 lchars
= ldata
->chars
;
4746 * First loop: work along the line deciding what we want
4747 * each character cell to look like.
4749 for (j
= 0; j
< term
->cols
; j
++) {
4750 unsigned long tattr
, tchar
;
4751 termchar
*d
= lchars
+ j
;
4752 scrpos
.x
= backward ? backward
[j
] : j
;
4757 if (!term
->cfg
.ansi_colour
)
4758 tattr
= (tattr
& ~(ATTR_FGMASK
| ATTR_BGMASK
)) |
4759 ATTR_DEFFG
| ATTR_DEFBG
;
4761 if (!term
->cfg
.xterm_256_colour
) {
4763 colour
= (tattr
& ATTR_FGMASK
) >> ATTR_FGSHIFT
;
4764 if (colour
>= 16 && colour
< 256)
4765 tattr
= (tattr
&~ ATTR_FGMASK
) | ATTR_DEFFG
;
4766 colour
= (tattr
& ATTR_BGMASK
) >> ATTR_BGSHIFT
;
4767 if (colour
>= 16 && colour
< 256)
4768 tattr
= (tattr
&~ ATTR_BGMASK
) | ATTR_DEFBG
;
4771 switch (tchar
& CSET_MASK
) {
4773 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4776 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4779 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4782 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4785 /* Video reversing things */
4786 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4787 if (term
->seltype
== LEXICOGRAPHIC
)
4788 selected
= (posle(term
->selstart
, scrpos
) &&
4789 poslt(scrpos
, term
->selend
));
4791 selected
= (posPle(term
->selstart
, scrpos
) &&
4792 posPlt(scrpos
, term
->selend
));
4796 ^ (selected ? ATTR_REVERSE
: 0));
4798 /* 'Real' blinking ? */
4799 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4800 if (term
->has_focus
&& term
->tblinker
) {
4801 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4803 tattr
&= ~ATTR_BLINK
;
4807 * Check the font we'll _probably_ be using to see if
4808 * the character is wide when we don't want it to be.
4810 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4811 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4812 (ATTR_NARROW
| DATTR_MASK
))) {
4813 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4814 tattr
|= ATTR_NARROW
;
4815 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4816 tattr
|= ATTR_NARROW
;
4818 if (i
== our_curs_y
&& j
== our_curs_x
) {
4820 term
->curstype
= cursor
;
4821 term
->dispcursx
= j
;
4822 term
->dispcursy
= i
;
4826 newline
[j
].attr
= tattr
;
4827 newline
[j
].chr
= tchar
;
4828 /* Combining characters are still read from lchars */
4829 newline
[j
].cc_next
= 0;
4833 * Now loop over the line again, noting where things have
4836 * During this loop, we keep track of where we last saw
4837 * DATTR_STARTRUN. Any mismatch automatically invalidates
4838 * _all_ of the containing run that was last printed: that
4839 * is, any rectangle that was drawn in one go in the
4840 * previous update should be either left completely alone
4841 * or overwritten in its entirety. This, along with the
4842 * expectation that front ends clip all text runs to their
4843 * bounding rectangle, should solve any possible problems
4844 * with fonts that overflow their character cells.
4848 for (j
= 0; j
< term
->cols
; j
++) {
4849 if (term
->disptext
[i
]->chars
[j
].attr
& DATTR_STARTRUN
) {
4854 if (term
->disptext
[i
]->chars
[j
].chr
!= newline
[j
].chr
||
4855 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
)
4856 != newline
[j
].attr
) {
4860 for (k
= laststart
; k
< j
; k
++)
4861 term
->disptext
[i
]->chars
[k
].attr
|= ATTR_INVALID
;
4868 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
4872 * Finally, loop once more and actually do the drawing.
4874 dirty_run
= dirty_line
= (ldata
->lattr
!=
4875 term
->disptext
[i
]->lattr
);
4876 term
->disptext
[i
]->lattr
= ldata
->lattr
;
4878 for (j
= 0; j
< term
->cols
; j
++) {
4879 unsigned long tattr
, tchar
;
4880 int break_run
, do_copy
;
4881 termchar
*d
= lchars
+ j
;
4883 tattr
= newline
[j
].attr
;
4884 tchar
= newline
[j
].chr
;
4886 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
4889 break_run
= ((tattr
^ attr
) & term
->attr_mask
) != 0;
4891 /* Special hack for VT100 Linedraw glyphs */
4892 if (tchar
>= 0x23BA && tchar
<= 0x23BD)
4896 * Separate out sequences of characters that have the
4897 * same CSET, if that CSET is a magic one.
4899 if (CSET_OF(tchar
) != cset
)
4903 * Break on both sides of any combined-character cell.
4905 if (d
->cc_next
!= 0 ||
4906 (j
> 0 && d
[-1].cc_next
!= 0))
4909 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
4910 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
4911 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
) == tattr
)
4913 else if (!dirty_run
&& ccount
== 1)
4918 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
4919 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
4921 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
4922 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
4930 cset
= CSET_OF(tchar
);
4931 if (term
->ucsdata
->dbcs_screenfont
)
4932 last_run_dirty
= dirty_run
;
4933 dirty_run
= dirty_line
;
4937 if (!termchars_equal_override(&term
->disptext
[i
]->chars
[j
],
4943 if (ccount
>= chlen
) {
4944 chlen
= ccount
+ 256;
4945 ch
= sresize(ch
, chlen
, wchar_t);
4947 ch
[ccount
++] = (wchar_t) tchar
;
4952 while (dd
->cc_next
) {
4953 unsigned long schar
;
4958 switch (schar
& CSET_MASK
) {
4960 schar
= term
->ucsdata
->unitab_line
[schar
& 0xFF];
4963 schar
= term
->ucsdata
->unitab_xterm
[schar
& 0xFF];
4966 schar
= term
->ucsdata
->unitab_scoacs
[schar
&0xFF];
4970 if (ccount
>= chlen
) {
4971 chlen
= ccount
+ 256;
4972 ch
= sresize(ch
, chlen
, wchar_t);
4974 ch
[ccount
++] = (wchar_t) schar
;
4977 attr
|= TATTR_COMBINING
;
4981 copy_termchar(term
->disptext
[i
], j
, d
);
4982 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
4983 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
4985 term
->disptext
[i
]->chars
[j
].attr
|= DATTR_STARTRUN
;
4988 /* If it's a wide char step along to the next one. */
4989 if (tattr
& ATTR_WIDE
) {
4990 if (++j
< term
->cols
) {
4993 * By construction above, the cursor should not
4994 * be on the right-hand half of this character.
4997 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
4998 if (!termchars_equal(&term
->disptext
[i
]->chars
[j
], d
))
5000 copy_termchar(term
->disptext
[i
], j
, d
);
5004 if (dirty_run
&& ccount
> 0) {
5005 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
5007 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
5008 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
5022 * Invalidate the whole screen so it will be repainted in full.
5024 void term_invalidate(Terminal
*term
)
5028 for (i
= 0; i
< term
->rows
; i
++)
5029 for (j
= 0; j
< term
->cols
; j
++)
5030 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5032 term_schedule_update(term
);
5036 * Paint the window in response to a WM_PAINT message.
5038 void term_paint(Terminal
*term
, Context ctx
,
5039 int left
, int top
, int right
, int bottom
, int immediately
)
5042 if (left
< 0) left
= 0;
5043 if (top
< 0) top
= 0;
5044 if (right
>= term
->cols
) right
= term
->cols
-1;
5045 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
5047 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
5048 if ((term
->disptext
[i
]->lattr
& LATTR_MODE
) == LATTR_NORM
)
5049 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
5050 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5052 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
5053 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5057 do_paint (term
, ctx
, FALSE
);
5059 term_schedule_update(term
);
5064 * Attempt to scroll the scrollback. The second parameter gives the
5065 * position we want to scroll to; the first is +1 to denote that
5066 * this position is relative to the beginning of the scrollback, -1
5067 * to denote it is relative to the end, and 0 to denote that it is
5068 * relative to the current position.
5070 void term_scroll(Terminal
*term
, int rel
, int where
)
5072 int sbtop
= -sblines(term
);
5073 #ifdef OPTIMISE_SCROLL
5074 int olddisptop
= term
->disptop
;
5076 #endif /* OPTIMISE_SCROLL */
5078 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
5079 if (term
->disptop
< sbtop
)
5080 term
->disptop
= sbtop
;
5081 if (term
->disptop
> 0)
5084 #ifdef OPTIMISE_SCROLL
5085 shift
= (term
->disptop
- olddisptop
);
5086 if (shift
< term
->rows
&& shift
> -term
->rows
)
5087 scroll_display(term
, 0, term
->rows
- 1, shift
);
5088 #endif /* OPTIMISE_SCROLL */
5093 * Helper routine for clipme(): growing buffer.
5096 int buflen
; /* amount of allocated space in textbuf/attrbuf */
5097 int bufpos
; /* amount of actual data */
5098 wchar_t *textbuf
; /* buffer for copied text */
5099 wchar_t *textptr
; /* = textbuf + bufpos (current insertion point) */
5100 int *attrbuf
; /* buffer for copied attributes */
5101 int *attrptr
; /* = attrbuf + bufpos */
5104 static void clip_addchar(clip_workbuf
*b
, wchar_t chr
, int attr
)
5106 if (b
->bufpos
>= b
->buflen
) {
5108 b
->textbuf
= sresize(b
->textbuf
, b
->buflen
, wchar_t);
5109 b
->textptr
= b
->textbuf
+ b
->bufpos
;
5110 b
->attrbuf
= sresize(b
->attrbuf
, b
->buflen
, int);
5111 b
->attrptr
= b
->attrbuf
+ b
->bufpos
;
5113 *b
->textptr
++ = chr
;
5114 *b
->attrptr
++ = attr
;
5118 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
5126 buf
.textptr
= buf
.textbuf
= snewn(buf
.buflen
, wchar_t);
5127 buf
.attrptr
= buf
.attrbuf
= snewn(buf
.buflen
, int);
5129 old_top_x
= top
.x
; /* needed for rect==1 */
5131 while (poslt(top
, bottom
)) {
5133 termline
*ldata
= lineptr(top
.y
);
5137 * nlpos will point at the maximum position on this line we
5138 * should copy up to. So we start it at the end of the
5142 nlpos
.x
= term
->cols
;
5145 * ... move it backwards if there's unused space at the end
5146 * of the line (and also set `nl' if this is the case,
5147 * because in normal selection mode this means we need a
5148 * newline at the end)...
5150 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5152 IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
5153 !ldata
->chars
[nlpos
.x
- 1].cc_next
&&
5156 if (poslt(nlpos
, bottom
))
5158 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
5159 /* Ignore the last char on the line in a WRAPPED2 line. */
5164 * ... and then clip it to the terminal x coordinate if
5165 * we're doing rectangular selection. (In this case we
5166 * still did the above, so that copying e.g. the right-hand
5167 * column from a table doesn't fill with spaces on the
5171 if (nlpos
.x
> bottom
.x
)
5173 nl
= (top
.y
< bottom
.y
);
5176 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
5179 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
5181 wchar_t cbuf
[16], *p
;
5185 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
5191 int uc
= ldata
->chars
[x
].chr
;
5192 attr
= ldata
->chars
[x
].attr
;
5194 switch (uc
& CSET_MASK
) {
5196 if (!term
->cfg
.rawcnp
) {
5197 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5201 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5204 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5207 switch (uc
& CSET_MASK
) {
5209 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5212 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5216 set
= (uc
& CSET_MASK
);
5217 c
= (uc
& ~CSET_MASK
);
5221 if (DIRECT_FONT(uc
)) {
5222 if (c
>= ' ' && c
!= 0x7F) {
5226 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
5228 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
5229 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
5233 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
5237 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
5244 for (p
= cbuf
; *p
; p
++)
5245 clip_addchar(&buf
, *p
, attr
);
5247 if (ldata
->chars
[x
].cc_next
)
5248 x
+= ldata
->chars
[x
].cc_next
;
5256 for (i
= 0; i
< sel_nl_sz
; i
++)
5257 clip_addchar(&buf
, sel_nl
[i
], 0);
5260 top
.x
= rect ? old_top_x
: 0;
5264 #if SELECTION_NUL_TERMINATED
5265 clip_addchar(&buf
, 0, 0);
5267 /* Finally, transfer all that to the clipboard. */
5268 write_clip(term
->frontend
, buf
.textbuf
, buf
.attrbuf
, buf
.bufpos
, desel
);
5273 void term_copyall(Terminal
*term
)
5277 tree234
*screen
= term
->screen
;
5278 top
.y
= -sblines(term
);
5280 bottom
.y
= find_last_nonempty_line(term
, screen
);
5281 bottom
.x
= term
->cols
;
5282 clipme(term
, top
, bottom
, 0, TRUE
);
5286 * The wordness array is mainly for deciding the disposition of the
5287 * US-ASCII characters.
5289 static int wordtype(Terminal
*term
, int uc
)
5292 int start
, end
, ctype
;
5294 static const struct ucsword ucs_words
[] = {
5300 0x037e, 0x037e, 1}, /* Greek question mark */
5302 0x0387, 0x0387, 1}, /* Greek ano teleia */
5304 0x055a, 0x055f, 1}, /* Armenian punctuation */
5306 0x0589, 0x0589, 1}, /* Armenian full stop */
5308 0x0700, 0x070d, 1}, /* Syriac punctuation */
5310 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5312 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5314 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5316 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5318 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5320 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5322 0x2000, 0x200a, 0}, /* Various spaces */
5324 0x2070, 0x207f, 2}, /* superscript */
5326 0x2080, 0x208f, 2}, /* subscript */
5328 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5330 0x3000, 0x3000, 0}, /* ideographic space */
5332 0x3001, 0x3020, 1}, /* ideographic punctuation */
5334 0x303f, 0x309f, 3}, /* Hiragana */
5336 0x30a0, 0x30ff, 3}, /* Katakana */
5338 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5340 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5342 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5344 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5346 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5348 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5350 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5352 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5354 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5358 const struct ucsword
*wptr
;
5360 switch (uc
& CSET_MASK
) {
5362 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5365 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5368 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5371 switch (uc
& CSET_MASK
) {
5373 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5376 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5380 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5381 * fail as there's such a thing as a double width space. :-(
5383 if (term
->ucsdata
->dbcs_screenfont
&&
5384 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
5388 return term
->wordness
[uc
];
5390 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
5391 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
5399 * Spread the selection outwards according to the selection mode.
5401 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
5405 int topy
= -sblines(term
);
5407 ldata
= lineptr(p
.y
);
5409 switch (term
->selmode
) {
5412 * In this mode, every character is a separate unit, except
5413 * for runs of spaces at the end of a non-wrapping line.
5415 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5416 termchar
*q
= ldata
->chars
+ term
->cols
;
5417 while (q
> ldata
->chars
&&
5418 IS_SPACE_CHR(q
[-1].chr
) && !q
[-1].cc_next
)
5420 if (q
== ldata
->chars
+ term
->cols
)
5422 if (p
.x
>= q
- ldata
->chars
)
5423 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
5428 * In this mode, the units are maximal runs of characters
5429 * whose `wordness' has the same value.
5431 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
5434 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
5435 term
->cols
-1 : term
->cols
);
5436 if (p
.x
< maxcols
-1) {
5437 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
5442 if (ldata
->lattr
& LATTR_WRAPPED
) {
5444 ldata2
= lineptr(p
.y
+1);
5445 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
5462 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
5471 ldata2
= lineptr(p
.y
-1);
5472 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
5473 term
->cols
-1 : term
->cols
);
5474 if (ldata2
->lattr
& LATTR_WRAPPED
) {
5475 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
5493 * In this mode, every line is a unit.
5495 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
5503 static void sel_spread(Terminal
*term
)
5505 if (term
->seltype
== LEXICOGRAPHIC
) {
5506 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
5507 decpos(term
->selend
);
5508 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
5509 incpos(term
->selend
);
5513 void term_do_paste(Terminal
*term
)
5518 get_clip(term
->frontend
, &data
, &len
);
5519 if (data
&& len
> 0) {
5522 term_seen_key_event(term
); /* pasted data counts */
5524 if (term
->paste_buffer
)
5525 sfree(term
->paste_buffer
);
5526 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5527 term
->paste_buffer
= snewn(len
, wchar_t);
5530 while (p
< data
+ len
) {
5531 while (p
< data
+ len
&&
5532 !(p
<= data
+ len
- sel_nl_sz
&&
5533 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
5538 for (i
= 0; i
< p
- q
; i
++) {
5539 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
5543 if (p
<= data
+ len
- sel_nl_sz
&&
5544 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
5545 term
->paste_buffer
[term
->paste_len
++] = '\015';
5551 /* Assume a small paste will be OK in one go. */
5552 if (term
->paste_len
< 256) {
5554 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
5555 if (term
->paste_buffer
)
5556 sfree(term
->paste_buffer
);
5557 term
->paste_buffer
= 0;
5558 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5561 get_clip(term
->frontend
, NULL
, NULL
);
5564 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
5565 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
5569 int raw_mouse
= (term
->xterm_mouse
&&
5570 !term
->cfg
.no_mouse_rep
&&
5571 !(term
->cfg
.mouse_override
&& shift
));
5572 int default_seltype
;
5576 if (a
== MA_DRAG
&& !raw_mouse
)
5577 term_scroll(term
, 0, -1);
5579 if (y
>= term
->rows
) {
5581 if (a
== MA_DRAG
&& !raw_mouse
)
5582 term_scroll(term
, 0, +1);
5591 if (x
>= term
->cols
)
5594 selpoint
.y
= y
+ term
->disptop
;
5595 ldata
= lineptr(selpoint
.y
);
5597 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
5601 * Transform x through the bidi algorithm to find the _logical_
5602 * click point from the physical one.
5604 if (term_bidi_line(term
, ldata
, y
) != NULL
) {
5605 x
= term
->post_bidi_cache
[y
].backward
[x
];
5612 * If we're in the middle of a selection operation, we ignore raw
5613 * mouse mode until it's done (we must have been not in raw mouse
5614 * mode when it started).
5615 * This makes use of Shift for selection reliable, and avoids the
5616 * host seeing mouse releases for which they never saw corresponding
5620 (term
->selstate
!= ABOUT_TO
) && (term
->selstate
!= DRAGGING
)) {
5621 int encstate
= 0, r
, c
;
5628 encstate
= 0x20; /* left button down */
5639 case MBT_WHEEL_DOWN
:
5642 default: break; /* placate gcc warning about enum use */
5646 if (term
->xterm_mouse
== 1)
5652 term
->mouse_is_down
= 0;
5655 if (term
->mouse_is_down
== braw
)
5657 term
->mouse_is_down
= braw
;
5659 default: break; /* placate gcc warning about enum use */
5668 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
5669 ldisc_send(term
->ldisc
, abuf
, 6, 0);
5675 * Set the selection type (rectangular or normal) at the start
5676 * of a selection attempt, from the state of Alt.
5678 if (!alt
^ !term
->cfg
.rect_select
)
5679 default_seltype
= RECTANGULAR
;
5681 default_seltype
= LEXICOGRAPHIC
;
5683 if (term
->selstate
== NO_SELECTION
) {
5684 term
->seltype
= default_seltype
;
5687 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
5689 term
->selstate
= ABOUT_TO
;
5690 term
->seltype
= default_seltype
;
5691 term
->selanchor
= selpoint
;
5692 term
->selmode
= SM_CHAR
;
5693 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
5695 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
5696 term
->selstate
= DRAGGING
;
5697 term
->selstart
= term
->selanchor
= selpoint
;
5698 term
->selend
= term
->selstart
;
5699 incpos(term
->selend
);
5701 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
5702 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
5703 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
5705 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
5706 term
->selstate
== SELECTED
) {
5707 if (term
->seltype
== LEXICOGRAPHIC
) {
5709 * For normal selection, we extend by moving
5710 * whichever end of the current selection is closer
5713 if (posdiff(selpoint
, term
->selstart
) <
5714 posdiff(term
->selend
, term
->selstart
) / 2) {
5715 term
->selanchor
= term
->selend
;
5716 decpos(term
->selanchor
);
5718 term
->selanchor
= term
->selstart
;
5722 * For rectangular selection, we have a choice of
5723 * _four_ places to put selanchor and selpoint: the
5724 * four corners of the selection.
5726 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
5727 term
->selanchor
.x
= term
->selend
.x
-1;
5729 term
->selanchor
.x
= term
->selstart
.x
;
5731 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
5732 term
->selanchor
.y
= term
->selend
.y
;
5734 term
->selanchor
.y
= term
->selstart
.y
;
5736 term
->selstate
= DRAGGING
;
5738 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
5739 term
->selanchor
= selpoint
;
5740 term
->selstate
= DRAGGING
;
5741 if (term
->seltype
== LEXICOGRAPHIC
) {
5743 * For normal selection, we set (selstart,selend) to
5744 * (selpoint,selanchor) in some order.
5746 if (poslt(selpoint
, term
->selanchor
)) {
5747 term
->selstart
= selpoint
;
5748 term
->selend
= term
->selanchor
;
5749 incpos(term
->selend
);
5751 term
->selstart
= term
->selanchor
;
5752 term
->selend
= selpoint
;
5753 incpos(term
->selend
);
5757 * For rectangular selection, we may need to
5758 * interchange x and y coordinates (if the user has
5759 * dragged in the -x and +y directions, or vice versa).
5761 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
5762 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
5763 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
5764 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
5767 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
5769 if (term
->selstate
== DRAGGING
) {
5771 * We've completed a selection. We now transfer the
5772 * data to the clipboard.
5774 clipme(term
, term
->selstart
, term
->selend
,
5775 (term
->seltype
== RECTANGULAR
), FALSE
);
5776 term
->selstate
= SELECTED
;
5778 term
->selstate
= NO_SELECTION
;
5779 } else if (bcooked
== MBT_PASTE
5781 #if MULTICLICK_ONLY_EVENT
5782 || a
== MA_2CLK
|| a
== MA_3CLK
5785 request_paste(term
->frontend
);
5791 void term_key(Terminal
*term
, Key_Sym keysym
, wchar_t *text
, size_t tlen
,
5792 unsigned int modifiers
, unsigned int flags
)
5796 int prependesc
= FALSE
;
5800 fprintf(stderr
, "keysym = %d, %d chars:", keysym
, tlen
);
5801 for (i
= 0; i
< tlen
; i
++)
5802 fprintf(stderr
, " %04x", (unsigned)text
[i
]);
5803 fprintf(stderr
, "\n");
5807 if ((flags
& PKF_REPEAT
) && term
->repeat_off
)
5810 /* Currently, Meta always just prefixes everything with ESC. */
5811 if (modifiers
& PKM_META
)
5813 modifiers
&= ~PKM_META
;
5816 * Alt is only used for Alt+keypad, which isn't supported yet, so
5819 modifiers
&= ~PKM_ALT
;
5821 /* Standard local function keys */
5822 switch (modifiers
& (PKM_SHIFT
| PKM_CONTROL
)) {
5824 if (keysym
== PK_PAGEUP
)
5825 /* scroll up one page */;
5826 if (keysym
== PK_PAGEDOWN
)
5827 /* scroll down on page */;
5828 if (keysym
== PK_INSERT
)
5829 term_do_paste(term
);
5832 if (keysym
== PK_PAGEUP
)
5833 /* scroll up one line */;
5834 if (keysym
== PK_PAGEDOWN
)
5835 /* scroll down one line */;
5836 /* Control-Numlock for app-keypad mode switch */
5837 if (keysym
== PK_PF1
)
5838 term
->app_keypad_keys
^= 1;
5842 if (modifiers
& PKM_ALT
) {
5843 /* Alt+F4 (close) */
5844 /* Alt+Return (full screen) */
5845 /* Alt+Space (system menu) */
5848 if (keysym
== PK_NULL
&& (modifiers
& PKM_CONTROL
) && tlen
== 1 &&
5849 text
[0] >= 0x20 && text
[0] <= 0x7e) {
5850 /* ASCII chars + Control */
5851 if ((text
[0] >= 0x40 && text
[0] <= 0x5f) ||
5852 (text
[0] >= 0x61 && text
[0] <= 0x7a))
5856 * Control-2 should return ^@ (0x00), Control-6 should return
5857 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5858 * the DOS keyboard handling did it, and we have nothing better
5859 * to do with the key combo in question, we'll also map
5860 * Control-Backquote to ^\ (0x1C).
5863 case ' ': text
[0] = 0x00; break;
5864 case '-': text
[0] = 0x1f; break;
5865 case '/': text
[0] = 0x1f; break;
5866 case '2': text
[0] = 0x00; break;
5867 case '3': text
[0] = 0x1b; break;
5868 case '4': text
[0] = 0x1c; break;
5869 case '5': text
[0] = 0x1d; break;
5870 case '6': text
[0] = 0x1e; break;
5871 case '7': text
[0] = 0x1f; break;
5872 case '8': text
[0] = 0x7f; break;
5873 case '`': text
[0] = 0x1c; break;
5878 /* Nethack keypad */
5879 if (term
->cfg
.nethack_keypad
) {
5882 case PK_KP1
: c
= 'b'; break;
5883 case PK_KP2
: c
= 'j'; break;
5884 case PK_KP3
: c
= 'n'; break;
5885 case PK_KP4
: c
= 'h'; break;
5886 case PK_KP5
: c
= '.'; break;
5887 case PK_KP6
: c
= 'l'; break;
5888 case PK_KP7
: c
= 'y'; break;
5889 case PK_KP8
: c
= 'k'; break;
5890 case PK_KP9
: c
= 'u'; break;
5891 default: break; /* else gcc warns `enum value not used' */
5895 if (modifiers
& PKM_CONTROL
)
5897 else if (modifiers
& PKM_SHIFT
)
5905 /* Numeric Keypad */
5906 if (PK_ISKEYPAD(keysym
)) {
5910 * In VT400 mode, PFn always emits an escape sequence. In
5911 * Linux and tilde modes, this only happens in app keypad mode.
5913 if (term
->cfg
.funky_type
== FUNKY_VT400
||
5914 ((term
->cfg
.funky_type
== FUNKY_LINUX
||
5915 term
->cfg
.funky_type
== FUNKY_TILDE
) &&
5916 term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
)) {
5918 case PK_PF1
: xkey
= 'P'; break;
5919 case PK_PF2
: xkey
= 'Q'; break;
5920 case PK_PF3
: xkey
= 'R'; break;
5921 case PK_PF4
: xkey
= 'S'; break;
5922 default: break; /* else gcc warns `enum value not used' */
5925 if (term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
) {
5927 case PK_KP0
: xkey
= 'p'; break;
5928 case PK_KP1
: xkey
= 'q'; break;
5929 case PK_KP2
: xkey
= 'r'; break;
5930 case PK_KP3
: xkey
= 's'; break;
5931 case PK_KP4
: xkey
= 't'; break;
5932 case PK_KP5
: xkey
= 'u'; break;
5933 case PK_KP6
: xkey
= 'v'; break;
5934 case PK_KP7
: xkey
= 'w'; break;
5935 case PK_KP8
: xkey
= 'x'; break;
5936 case PK_KP9
: xkey
= 'y'; break;
5937 case PK_KPDECIMAL
: xkey
= 'n'; break;
5938 case PK_KPENTER
: xkey
= 'M'; break;
5939 default: break; /* else gcc warns `enum value not used' */
5941 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& tlen
> 0) {
5943 * xterm can't see the layout of the keypad, so it has
5944 * to rely on the X keysyms returned by the keys.
5945 * Hence, we look at the strings here, not the PuTTY
5946 * keysyms (which describe the layout).
5950 if (modifiers
& PKM_SHIFT
)
5955 case '/': xkey
= 'o'; break;
5956 case '*': xkey
= 'j'; break;
5957 case '-': xkey
= 'm'; break;
5961 * In all other modes, we try to retain the layout of
5962 * the DEC keypad in application mode.
5966 /* This key covers the '-' and ',' keys on a VT220 */
5967 if (modifiers
& PKM_SHIFT
)
5968 xkey
= 'm'; /* VT220 '-' */
5970 xkey
= 'l'; /* VT220 ',' */
5972 case PK_KPMINUS
: xkey
= 'm'; break;
5973 case PK_KPCOMMA
: xkey
= 'l'; break;
5974 default: break; /* else gcc warns `enum value not used' */
5979 if (term
->vt52_mode
) {
5980 if (xkey
>= 'P' && xkey
<= 'S')
5981 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5983 p
+= sprintf((char *) p
, "\x1B?%c", xkey
);
5985 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5988 /* Not in application mode -- treat the number pad as arrow keys? */
5989 if ((flags
& PKF_NUMLOCK
) == 0) {
5991 case PK_KP0
: keysym
= PK_INSERT
; break;
5992 case PK_KP1
: keysym
= PK_END
; break;
5993 case PK_KP2
: keysym
= PK_DOWN
; break;
5994 case PK_KP3
: keysym
= PK_PAGEDOWN
; break;
5995 case PK_KP4
: keysym
= PK_LEFT
; break;
5996 case PK_KP5
: keysym
= PK_REST
; break;
5997 case PK_KP6
: keysym
= PK_RIGHT
; break;
5998 case PK_KP7
: keysym
= PK_HOME
; break;
5999 case PK_KP8
: keysym
= PK_UP
; break;
6000 case PK_KP9
: keysym
= PK_PAGEUP
; break;
6001 default: break; /* else gcc warns `enum value not used' */
6006 /* Miscellaneous keys */
6013 *p
++ = (term
->cfg
.bksp_is_delete ?
0x7F : 0x08);
6014 else if (modifiers
== PKM_SHIFT
)
6015 /* We do the opposite of what is configured */
6016 *p
++ = (term
->cfg
.bksp_is_delete ?
0x08 : 0x7F);
6022 else if (modifiers
== PKM_SHIFT
)
6023 *p
++ = 0x1B, *p
++ = '[', *p
++ = 'Z';
6026 /* XXX window.c has ctrl+shift+space sending 0xa0 */
6028 if (modifiers
== PKM_CONTROL
)
6033 case PK_KPENTER
: /* Odd keypad modes handled above */
6034 if (modifiers
== 0) {
6036 if (term
->cr_lf_return
)
6040 default: break; /* else gcc warns `enum value not used' */
6043 /* SCO function keys and editing keys */
6044 if (term
->cfg
.funky_type
== FUNKY_SCO
) {
6045 if (PK_ISFKEY(keysym
) && keysym
<= PK_F12
) {
6046 static char const codes
[] =
6047 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
6048 int index
= keysym
- PK_F1
;
6050 if (modifiers
& PKM_SHIFT
) index
+= 12;
6051 if (modifiers
& PKM_CONTROL
) index
+= 24;
6052 p
+= sprintf((char *) p
, "\x1B[%c", codes
[index
]);
6055 if (PK_ISEDITING(keysym
)) {
6059 case PK_DELETE
: *p
++ = 0x7f; goto done
;
6060 case PK_HOME
: xkey
= 'H'; break;
6061 case PK_INSERT
: xkey
= 'L'; break;
6062 case PK_END
: xkey
= 'F'; break;
6063 case PK_PAGEUP
: xkey
= 'I'; break;
6064 case PK_PAGEDOWN
: xkey
= 'G'; break;
6065 default: break; /* else gcc warns `enum value not used' */
6067 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6071 if (PK_ISEDITING(keysym
) && (modifiers
& PKM_SHIFT
) == 0) {
6074 if (term
->cfg
.funky_type
== FUNKY_XTERM
) {
6075 /* Xterm shuffles these keys, apparently. */
6077 case PK_HOME
: keysym
= PK_INSERT
; break;
6078 case PK_INSERT
: keysym
= PK_HOME
; break;
6079 case PK_DELETE
: keysym
= PK_END
; break;
6080 case PK_END
: keysym
= PK_PAGEUP
; break;
6081 case PK_PAGEUP
: keysym
= PK_DELETE
; break;
6082 case PK_PAGEDOWN
: keysym
= PK_PAGEDOWN
; break;
6083 default: break; /* else gcc warns `enum value not used' */
6088 if (term
->cfg
.rxvt_homeend
&&
6089 (keysym
== PK_HOME
|| keysym
== PK_END
)) {
6090 p
+= sprintf((char *) p
, keysym
== PK_HOME ?
"\x1B[H" : "\x1BOw");
6094 if (term
->vt52_mode
) {
6098 * A real VT52 doesn't have these, and a VT220 doesn't
6099 * send anything for them in VT52 mode.
6102 case PK_HOME
: xkey
= 'H'; break;
6103 case PK_INSERT
: xkey
= 'L'; break;
6104 case PK_DELETE
: xkey
= 'M'; break;
6105 case PK_END
: xkey
= 'E'; break;
6106 case PK_PAGEUP
: xkey
= 'I'; break;
6107 case PK_PAGEDOWN
: xkey
= 'G'; break;
6108 default: xkey
=0; break; /* else gcc warns `enum value not used'*/
6110 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6115 case PK_HOME
: code
= 1; break;
6116 case PK_INSERT
: code
= 2; break;
6117 case PK_DELETE
: code
= 3; break;
6118 case PK_END
: code
= 4; break;
6119 case PK_PAGEUP
: code
= 5; break;
6120 case PK_PAGEDOWN
: code
= 6; break;
6121 default: code
= 0; break; /* else gcc warns `enum value not used' */
6123 p
+= sprintf((char *) p
, "\x1B[%d~", code
);
6127 if (PK_ISFKEY(keysym
)) {
6128 /* Map Shift+F1-F10 to F11-F20 */
6129 if (keysym
>= PK_F1
&& keysym
<= PK_F10
&& (modifiers
& PKM_SHIFT
))
6131 if ((term
->vt52_mode
|| term
->cfg
.funky_type
== FUNKY_VT100P
) &&
6133 /* XXX This overrides the XTERM/VT52 mode below */
6135 if (keysym
>= PK_F6
) offt
++;
6136 if (keysym
>= PK_F12
) offt
++;
6137 p
+= sprintf((char *) p
, term
->vt52_mode ?
"\x1B%c" : "\x1BO%c",
6138 'P' + keysym
- PK_F1
- offt
);
6141 if (term
->cfg
.funky_type
== FUNKY_LINUX
&& keysym
<= PK_F5
) {
6142 p
+= sprintf((char *) p
, "\x1B[[%c", 'A' + keysym
- PK_F1
);
6145 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& keysym
<= PK_F4
) {
6146 if (term
->vt52_mode
)
6147 p
+= sprintf((char *) p
, "\x1B%c", 'P' + keysym
- PK_F1
);
6149 p
+= sprintf((char *) p
, "\x1BO%c", 'P' + keysym
- PK_F1
);
6152 p
+= sprintf((char *) p
, "\x1B[%d~", 11 + keysym
- PK_F1
);
6156 if (PK_ISCURSOR(keysym
)) {
6160 case PK_UP
: xkey
= 'A'; break;
6161 case PK_DOWN
: xkey
= 'B'; break;
6162 case PK_RIGHT
: xkey
= 'C'; break;
6163 case PK_LEFT
: xkey
= 'D'; break;
6164 case PK_REST
: xkey
= 'G'; break; /* centre key on number pad */
6165 default: xkey
= 0; break; /* else gcc warns `enum value not used' */
6167 if (term
->vt52_mode
)
6168 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6170 int app_flg
= (term
->app_cursor_keys
&& !term
->cfg
.no_applic_c
);
6172 /* Useful mapping of Ctrl-arrows */
6173 if (modifiers
== PKM_CONTROL
)
6177 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
6179 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6185 if (p
> output
|| tlen
> 0) {
6187 * Interrupt an ongoing paste. I'm not sure
6188 * this is sensible, but for the moment it's
6189 * preferable to having to faff about buffering
6195 * We need not bother about stdin backlogs
6196 * here, because in GUI PuTTY we can't do
6197 * anything about it anyway; there's no means
6198 * of asking Windows to hold off on KEYDOWN
6199 * messages. We _have_ to buffer everything
6202 term_seen_key_event(term
);
6206 fprintf(stderr
, "sending ESC\n");
6208 ldisc_send(term
->ldisc
, "\x1b", 1, 1);
6213 fprintf(stderr
, "sending %d bytes:", p
- output
);
6214 for (i
= 0; i
< p
- output
; i
++)
6215 fprintf(stderr
, " %02x", output
[i
]);
6216 fprintf(stderr
, "\n");
6218 ldisc_send(term
->ldisc
, output
, p
- output
, 1);
6219 } else if (tlen
> 0) {
6221 fprintf(stderr
, "sending %d unichars:", tlen
);
6222 for (i
= 0; i
< tlen
; i
++)
6223 fprintf(stderr
, " %04x", (unsigned) text
[i
]);
6224 fprintf(stderr
, "\n");
6226 luni_send(term
->ldisc
, text
, tlen
, 1);
6231 void term_nopaste(Terminal
*term
)
6233 if (term
->paste_len
== 0)
6235 sfree(term
->paste_buffer
);
6236 term
->paste_buffer
= NULL
;
6237 term
->paste_len
= 0;
6240 int term_paste_pending(Terminal
*term
)
6242 return term
->paste_len
!= 0;
6245 void term_paste(Terminal
*term
)
6247 long now
, paste_diff
;
6249 if (term
->paste_len
== 0)
6252 /* Don't wait forever to paste */
6253 if (term
->paste_hold
) {
6254 now
= GETTICKCOUNT();
6255 paste_diff
= now
- term
->last_paste
;
6256 if (paste_diff
>= 0 && paste_diff
< 450)
6259 term
->paste_hold
= 0;
6261 while (term
->paste_pos
< term
->paste_len
) {
6263 while (n
+ term
->paste_pos
< term
->paste_len
) {
6264 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
6268 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
6269 term
->paste_pos
+= n
;
6271 if (term
->paste_pos
< term
->paste_len
) {
6272 term
->paste_hold
= 1;
6276 sfree(term
->paste_buffer
);
6277 term
->paste_buffer
= NULL
;
6278 term
->paste_len
= 0;
6281 static void deselect(Terminal
*term
)
6283 term
->selstate
= NO_SELECTION
;
6284 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
6287 void term_deselect(Terminal
*term
)
6293 int term_ldisc(Terminal
*term
, int option
)
6295 if (option
== LD_ECHO
)
6296 return term
->term_echoing
;
6297 if (option
== LD_EDIT
)
6298 return term
->term_editing
;
6302 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
6304 bufchain_add(&term
->inbuf
, data
, len
);
6306 if (!term
->in_term_out
) {
6307 term
->in_term_out
= TRUE
;
6308 term_reset_cblink(term
);
6310 * During drag-selects, we do not process terminal input,
6311 * because the user will want the screen to hold still to
6314 if (term
->selstate
!= DRAGGING
)
6316 term
->in_term_out
= FALSE
;
6320 * term_out() always completely empties inbuf. Therefore,
6321 * there's no reason at all to return anything other than zero
6322 * from this function, because there _can't_ be a question of
6323 * the remote side needing to wait until term_out() has cleared
6326 * This is a slightly suboptimal way to deal with SSH-2 - in
6327 * principle, the window mechanism would allow us to continue
6328 * to accept data on forwarded ports and X connections even
6329 * while the terminal processing was going slowly - but we
6330 * can't do the 100% right thing without moving the terminal
6331 * processing into a separate thread, and that might hurt
6332 * portability. So we manage stdout buffering the old SSH-1 way:
6333 * if the terminal processing goes slowly, the whole SSH
6334 * connection stops accepting data until it's ready.
6336 * In practice, I can't imagine this causing serious trouble.
6342 * Write untrusted data to the terminal.
6343 * The only control character that should be honoured is \n (which
6344 * will behave as a CRLF).
6346 int term_data_untrusted(Terminal
*term
, const char *data
, int len
)
6349 /* FIXME: more sophisticated checking? */
6350 for (i
= 0; i
< len
; i
++) {
6351 if (data
[i
] == '\n')
6352 term_data(term
, 1, "\r\n", 2);
6353 else if (data
[i
] & 0x60)
6354 term_data(term
, 1, data
+ i
, 1);
6356 return 0; /* assumes that term_data() always returns 0 */
6359 void term_provide_logctx(Terminal
*term
, void *logctx
)
6361 term
->logctx
= logctx
;
6364 void term_set_focus(Terminal
*term
, int has_focus
)
6366 term
->has_focus
= has_focus
;
6367 term_schedule_cblink(term
);
6371 * Provide "auto" settings for remote tty modes, suitable for an
6372 * application with a terminal window.
6374 char *term_get_ttymode(Terminal
*term
, const char *mode
)
6377 if (strcmp(mode
, "ERASE") == 0) {
6378 val
= term
->cfg
.bksp_is_delete ?
"^?" : "^H";
6380 /* FIXME: perhaps we should set ONLCR based on cfg.lfhascr as well? */
6384 struct term_userpass_state
{
6386 int done_prompt
; /* printed out prompt yet? */
6387 size_t pos
; /* cursor position */
6391 * Process some terminal data in the course of username/password
6394 int term_get_userpass_input(Terminal
*term
, prompts_t
*p
,
6395 unsigned char *in
, int inlen
)
6397 struct term_userpass_state
*s
= (struct term_userpass_state
*)p
->data
;
6400 * First call. Set some stuff up.
6402 p
->data
= s
= snew(struct term_userpass_state
);
6405 /* We only print the `name' caption if we have to... */
6406 if (p
->name_reqd
&& p
->name
) {
6407 size_t l
= strlen(p
->name
);
6408 term_data_untrusted(term
, p
->name
, l
);
6409 if (p
->name
[l
-1] != '\n')
6410 term_data_untrusted(term
, "\n", 1);
6412 /* ...but we always print any `instruction'. */
6413 if (p
->instruction
) {
6414 size_t l
= strlen(p
->instruction
);
6415 term_data_untrusted(term
, p
->instruction
, l
);
6416 if (p
->instruction
[l
-1] != '\n')
6417 term_data_untrusted(term
, "\n", 1);
6420 * Zero all the results, in case we abort half-way through.
6424 for (i
= 0; i
< p
->n_prompts
; i
++)
6425 memset(p
->prompts
[i
]->result
, 0, p
->prompts
[i
]->result_len
);
6429 while (s
->curr_prompt
< p
->n_prompts
) {
6431 prompt_t
*pr
= p
->prompts
[s
->curr_prompt
];
6432 int finished_prompt
= 0;
6434 if (!s
->done_prompt
) {
6435 term_data_untrusted(term
, pr
->prompt
, strlen(pr
->prompt
));
6440 /* Breaking out here ensures that the prompt is printed even
6441 * if we're now waiting for user data. */
6442 if (!in
|| !inlen
) break;
6444 /* FIXME: should we be using local-line-editing code instead? */
6445 while (!finished_prompt
&& inlen
) {
6451 term_data(term
, 0, "\r\n", 2);
6452 pr
->result
[s
->pos
] = '\0';
6453 pr
->result
[pr
->result_len
- 1] = '\0';
6454 /* go to next prompt, if any */
6457 finished_prompt
= 1; /* break out */
6463 term_data(term
, 0, "\b \b", 3);
6469 while (s
->pos
> 0) {
6471 term_data(term
, 0, "\b \b", 3);
6477 /* Immediate abort. */
6478 term_data(term
, 0, "\r\n", 2);
6481 return 0; /* user abort */
6484 * This simplistic check for printability is disabled
6485 * when we're doing password input, because some people
6486 * have control characters in their passwords.
6489 (c
>= ' ' && c
<= '~') ||
6490 ((unsigned char) c
>= 160))
6491 && s
->pos
< pr
->result_len
- 1) {
6492 pr
->result
[s
->pos
++] = c
;
6494 term_data(term
, 0, &c
, 1);
6502 if (s
->curr_prompt
< p
->n_prompts
) {
6503 return -1; /* more data required */
6507 return +1; /* all done */