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 char *EMPTY_WINDOW_TITLE
= "";
70 const char sco2ansicolour
[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
72 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
73 const wchar_t sel_nl
[] = SEL_NL
;
76 * Fetch the character at a particular position in a line array,
77 * for purposes of `wordtype'. The reason this isn't just a simple
78 * array reference is that if the character we find is UCSWIDE,
79 * then we must look one space further to the left.
81 #define UCSGET(a, x) \
82 ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr )
85 * Detect the various aliases of U+0020 SPACE.
87 #define IS_SPACE_CHR(chr) \
88 ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20))
93 #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0)
96 * Internal prototypes.
98 static void resizeline(Terminal
*, termline
*, int);
99 static termline
*lineptr(Terminal
*, int, int, int);
100 static void unlineptr(termline
*);
101 static void do_paint(Terminal
*, Context
, int);
102 static void erase_lots(Terminal
*, int, int, int);
103 static int find_last_nonempty_line(Terminal
*, tree234
*);
104 static void swap_screen(Terminal
*, int, int, int);
105 static void update_sbar(Terminal
*);
106 static void deselect(Terminal
*);
107 static void term_print_finish(Terminal
*);
108 static void scroll(Terminal
*, int, int, int, int);
109 #ifdef OPTIMISE_SCROLL
110 static void scroll_display(Terminal
*, int, int, int);
111 #endif /* OPTIMISE_SCROLL */
113 static termline
*newline(Terminal
*term
, int cols
, int bce
)
118 line
= snew(termline
);
119 line
->chars
= snewn(cols
, termchar
);
120 for (j
= 0; j
< cols
; j
++)
121 line
->chars
[j
] = (bce ? term
->erase_char
: term
->basic_erase_char
);
122 line
->cols
= line
->size
= cols
;
123 line
->lattr
= LATTR_NORM
;
124 line
->temporary
= FALSE
;
130 static void freeline(termline
*line
)
138 static void unlineptr(termline
*line
)
146 * Diagnostic function: verify that a termline has a correct
147 * combining character structure.
149 * This is a performance-intensive check, so it's no longer enabled
152 static void cc_check(termline
*line
)
154 unsigned char *flags
;
157 assert(line
->size
>= line
->cols
);
159 flags
= snewn(line
->size
, unsigned char);
161 for (i
= 0; i
< line
->size
; i
++)
162 flags
[i
] = (i
< line
->cols
);
164 for (i
= 0; i
< line
->cols
; i
++) {
166 while (line
->chars
[j
].cc_next
) {
167 j
+= line
->chars
[j
].cc_next
;
168 assert(j
>= line
->cols
&& j
< line
->size
);
177 assert(j
>= line
->cols
&& j
< line
->size
);
180 if (line
->chars
[j
].cc_next
)
181 j
+= line
->chars
[j
].cc_next
;
188 for (i
= 0; i
< line
->size
; i
++)
189 j
+= (flags
[i
] != 0);
191 assert(j
== line
->size
);
198 * Add a combining character to a character cell.
200 static void add_cc(termline
*line
, int col
, unsigned long chr
)
204 assert(col
>= 0 && col
< line
->cols
);
207 * Start by extending the cols array if the free list is empty.
209 if (!line
->cc_free
) {
211 line
->size
+= 16 + (line
->size
- line
->cols
) / 2;
212 line
->chars
= sresize(line
->chars
, line
->size
, termchar
);
214 while (n
< line
->size
) {
215 if (n
+1 < line
->size
)
216 line
->chars
[n
].cc_next
= 1;
218 line
->chars
[n
].cc_next
= 0;
224 * Now walk the cc list of the cell in question.
226 while (line
->chars
[col
].cc_next
)
227 col
+= line
->chars
[col
].cc_next
;
230 * `col' now points at the last cc currently in this cell; so
231 * we simply add another one.
233 newcc
= line
->cc_free
;
234 if (line
->chars
[newcc
].cc_next
)
235 line
->cc_free
= newcc
+ line
->chars
[newcc
].cc_next
;
238 line
->chars
[newcc
].cc_next
= 0;
239 line
->chars
[newcc
].chr
= chr
;
240 line
->chars
[col
].cc_next
= newcc
- col
;
248 * Clear the combining character list in a character cell.
250 static void clear_cc(termline
*line
, int col
)
252 int oldfree
, origcol
= col
;
254 assert(col
>= 0 && col
< line
->cols
);
256 if (!line
->chars
[col
].cc_next
)
257 return; /* nothing needs doing */
259 oldfree
= line
->cc_free
;
260 line
->cc_free
= col
+ line
->chars
[col
].cc_next
;
261 while (line
->chars
[col
].cc_next
)
262 col
+= line
->chars
[col
].cc_next
;
264 line
->chars
[col
].cc_next
= oldfree
- col
;
266 line
->chars
[col
].cc_next
= 0;
268 line
->chars
[origcol
].cc_next
= 0;
276 * Compare two character cells for equality. Special case required
277 * in do_paint() where we override what we expect the chr and attr
280 static int termchars_equal_override(termchar
*a
, termchar
*b
,
281 unsigned long bchr
, unsigned long battr
)
286 if ((a
->attr
&~ DATTR_MASK
) != (battr
&~ DATTR_MASK
))
288 while (a
->cc_next
|| b
->cc_next
) {
289 if (!a
->cc_next
|| !b
->cc_next
)
290 return FALSE
; /* one cc-list ends, other does not */
293 if (a
->chr
!= b
->chr
)
299 static int termchars_equal(termchar
*a
, termchar
*b
)
301 return termchars_equal_override(a
, b
, b
->chr
, b
->attr
);
305 * Copy a character cell. (Requires a pointer to the destination
306 * termline, so as to access its free list.)
308 static void copy_termchar(termline
*destline
, int x
, termchar
*src
)
310 clear_cc(destline
, x
);
312 destline
->chars
[x
] = *src
; /* copy everything except cc-list */
313 destline
->chars
[x
].cc_next
= 0; /* and make sure this is zero */
315 while (src
->cc_next
) {
317 add_cc(destline
, x
, src
->chr
);
326 * Move a character cell within its termline.
328 static void move_termchar(termline
*line
, termchar
*dest
, termchar
*src
)
330 /* First clear the cc list from the original char, just in case. */
331 clear_cc(line
, dest
- line
->chars
);
333 /* Move the character cell and adjust its cc_next. */
334 *dest
= *src
; /* copy everything except cc-list */
336 dest
->cc_next
= src
->cc_next
- (dest
-src
);
338 /* Ensure the original cell doesn't have a cc list. */
347 * Compress and decompress a termline into an RLE-based format for
348 * storing in scrollback. (Since scrollback almost never needs to
349 * be modified and exists in huge quantities, this is a sensible
350 * tradeoff, particularly since it allows us to continue adding
351 * features to the main termchar structure without proportionally
352 * bloating the terminal emulator's memory footprint unless those
353 * features are in constant use.)
359 static void add(struct buf
*b
, unsigned char c
)
361 if (b
->len
>= b
->size
) {
362 b
->size
= (b
->len
* 3 / 2) + 512;
363 b
->data
= sresize(b
->data
, b
->size
, unsigned char);
365 b
->data
[b
->len
++] = c
;
367 static int get(struct buf
*b
)
369 return b
->data
[b
->len
++];
371 static void makerle(struct buf
*b
, termline
*ldata
,
372 void (*makeliteral
)(struct buf
*b
, termchar
*c
,
373 unsigned long *state
))
375 int hdrpos
, hdrsize
, n
, prevlen
, prevpos
, thislen
, thispos
, prev2
;
376 termchar
*c
= ldata
->chars
;
377 unsigned long state
= 0, oldstate
;
384 prevlen
= prevpos
= 0;
389 makeliteral(b
, c
++, &state
);
390 thislen
= b
->len
- thispos
;
391 if (thislen
== prevlen
&&
392 !memcmp(b
->data
+ prevpos
, b
->data
+ thispos
, thislen
)) {
394 * This literal precisely matches the previous one.
395 * Turn it into a run if it's worthwhile.
397 * With one-byte literals, it costs us two bytes to
398 * encode a run, plus another byte to write the header
399 * to resume normal output; so a three-element run is
400 * neutral, and anything beyond that is unconditionally
401 * worthwhile. With two-byte literals or more, even a
404 if (thislen
> 1 || prev2
) {
408 * It's worth encoding a run. Start at prevpos,
409 * unless hdrsize==0 in which case we can back up
410 * another one and start by overwriting hdrpos.
413 hdrsize
--; /* remove the literal at prevpos */
417 prevpos
-= prevlen
;/* and possibly another one */
421 assert(prevpos
== hdrpos
+ 1);
423 b
->len
= prevpos
+prevlen
;
425 memmove(b
->data
+ prevpos
+1, b
->data
+ prevpos
, prevlen
);
427 b
->len
= prevpos
+prevlen
+1;
429 * Terminate the previous run of ordinary
432 assert(hdrsize
>= 1 && hdrsize
<= 128);
433 b
->data
[hdrpos
] = hdrsize
- 1;
436 runlen
= prev2 ?
3 : 2;
438 while (n
> 0 && runlen
< 129) {
442 makeliteral(b
, c
, &state
);
443 tmplen
= b
->len
- tmppos
;
445 if (tmplen
!= thislen
||
446 memcmp(b
->data
+ runpos
+1, b
->data
+ tmppos
, tmplen
)) {
448 break; /* run over */
453 assert(runlen
>= 2 && runlen
<= 129);
454 b
->data
[runpos
] = runlen
+ 0x80 - 2;
459 /* And ensure this run doesn't interfere with the next. */
460 prevlen
= prevpos
= 0;
466 * Just flag that the previous two literals were
467 * identical, in case we find a third identical one
468 * we want to turn into a run.
481 * This character isn't (yet) part of a run. Add it to
485 if (hdrsize
== 128) {
486 b
->data
[hdrpos
] = hdrsize
- 1;
490 prevlen
= prevpos
= 0;
499 assert(hdrsize
<= 128);
500 b
->data
[hdrpos
] = hdrsize
- 1;
505 static void makeliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
508 * My encoding for characters is UTF-8-like, in that it stores
509 * 7-bit ASCII in one byte and uses high-bit-set bytes as
510 * introducers to indicate a longer sequence. However, it's
511 * unlike UTF-8 in that it doesn't need to be able to
512 * resynchronise, and therefore I don't want to waste two bits
513 * per byte on having recognisable continuation characters.
514 * Also I don't want to rule out the possibility that I may one
515 * day use values 0x80000000-0xFFFFFFFF for interesting
516 * purposes, so unlike UTF-8 I need a full 32-bit range.
517 * Accordingly, here is my encoding:
519 * 00000000-0000007F: 0xxxxxxx (but see below)
520 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
521 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
522 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
523 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
525 * (`Z' is like `x' but is always going to be zero since the
526 * values I'm encoding don't go above 2^32. In principle the
527 * five-byte form of the encoding could extend to 2^35, and
528 * there could be six-, seven-, eight- and nine-byte forms as
529 * well to allow up to 64-bit values to be encoded. But that's
530 * completely unnecessary for these purposes!)
532 * The encoding as written above would be very simple, except
533 * that 7-bit ASCII can occur in several different ways in the
534 * terminal data; sometimes it crops up in the D800 page
535 * (CSET_ASCII) but at other times it's in the 0000 page (real
536 * Unicode). Therefore, this encoding is actually _stateful_:
537 * the one-byte encoding of 00-7F actually indicates `reuse the
538 * upper three bytes of the last character', and to encode an
539 * absolute value of 00-7F you need to use the two-byte form
542 if ((c
->chr
& ~0x7F) == *state
) {
543 add(b
, (unsigned char)(c
->chr
& 0x7F));
544 } else if (c
->chr
< 0x4000) {
545 add(b
, (unsigned char)(((c
->chr
>> 8) & 0x3F) | 0x80));
546 add(b
, (unsigned char)(c
->chr
& 0xFF));
547 } else if (c
->chr
< 0x200000) {
548 add(b
, (unsigned char)(((c
->chr
>> 16) & 0x1F) | 0xC0));
549 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
550 add(b
, (unsigned char)(c
->chr
& 0xFF));
551 } else if (c
->chr
< 0x10000000) {
552 add(b
, (unsigned char)(((c
->chr
>> 24) & 0x0F) | 0xE0));
553 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
554 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
555 add(b
, (unsigned char)(c
->chr
& 0xFF));
558 add(b
, (unsigned char)((c
->chr
>> 24) & 0xFF));
559 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
560 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
561 add(b
, (unsigned char)(c
->chr
& 0xFF));
563 *state
= c
->chr
& ~0xFF;
565 static void makeliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
568 * My encoding for attributes is 16-bit-granular and assumes
569 * that the top bit of the word is never required. I either
570 * store a two-byte value with the top bit clear (indicating
571 * just that value), or a four-byte value with the top bit set
572 * (indicating the same value with its top bit clear).
574 * However, first I permute the bits of the attribute value, so
575 * that the eight bits of colour (four in each of fg and bg)
576 * which are never non-zero unless xterm 256-colour mode is in
577 * use are placed higher up the word than everything else. This
578 * ensures that attribute values remain 16-bit _unless_ the
579 * user uses extended colour.
581 unsigned attr
, colourbits
;
585 assert(ATTR_BGSHIFT
> ATTR_FGSHIFT
);
587 colourbits
= (attr
>> (ATTR_BGSHIFT
+ 4)) & 0xF;
589 colourbits
|= (attr
>> (ATTR_FGSHIFT
+ 4)) & 0xF;
591 attr
= (((attr
>> (ATTR_BGSHIFT
+ 8)) << (ATTR_BGSHIFT
+ 4)) |
592 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
593 attr
= (((attr
>> (ATTR_FGSHIFT
+ 8)) << (ATTR_FGSHIFT
+ 4)) |
594 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
596 attr
|= (colourbits
<< (32-9));
599 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
600 add(b
, (unsigned char)(attr
& 0xFF));
602 add(b
, (unsigned char)(((attr
>> 24) & 0x7F) | 0x80));
603 add(b
, (unsigned char)((attr
>> 16) & 0xFF));
604 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
605 add(b
, (unsigned char)(attr
& 0xFF));
608 static void makeliteral_cc(struct buf
*b
, termchar
*c
, unsigned long *state
)
611 * For combining characters, I just encode a bunch of ordinary
612 * chars using makeliteral_chr, and terminate with a \0
613 * character (which I know won't come up as a combining char
616 * I don't use the stateful encoding in makeliteral_chr.
618 unsigned long zstate
;
627 makeliteral_chr(b
, c
, &zstate
);
632 makeliteral_chr(b
, &z
, &zstate
);
635 static termline
*decompressline(unsigned char *data
, int *bytes_used
);
637 static unsigned char *compressline(termline
*ldata
)
639 struct buf buffer
= { NULL
, 0, 0 }, *b
= &buffer
;
642 * First, store the column count, 7 bits at a time, least
643 * significant `digit' first, with the high bit set on all but
649 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
652 add(b
, (unsigned char)(n
));
656 * Next store the lattrs; same principle.
659 int n
= ldata
->lattr
;
661 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
664 add(b
, (unsigned char)(n
));
668 * Now we store a sequence of separate run-length encoded
669 * fragments, each containing exactly as many symbols as there
670 * are columns in the ldata.
672 * All of these have a common basic format:
674 * - a byte 00-7F indicates that X+1 literals follow it
675 * - a byte 80-FF indicates that a single literal follows it
676 * and expects to be repeated (X-0x80)+2 times.
678 * The format of the `literals' varies between the fragments.
680 makerle(b
, ldata
, makeliteral_chr
);
681 makerle(b
, ldata
, makeliteral_attr
);
682 makerle(b
, ldata
, makeliteral_cc
);
685 * Diagnostics: ensure that the compressed data really does
686 * decompress to the right thing.
688 * This is a bit performance-heavy for production code.
691 #ifndef CHECK_SB_COMPRESSION
697 #ifdef DIAGNOSTIC_SB_COMPRESSION
698 for (i
= 0; i
< b
->len
; i
++) {
699 printf(" %02x ", b
->data
[i
]);
704 dcl
= decompressline(b
->data
, &dused
);
705 assert(b
->len
== dused
);
706 assert(ldata
->cols
== dcl
->cols
);
707 assert(ldata
->lattr
== dcl
->lattr
);
708 for (i
= 0; i
< ldata
->cols
; i
++)
709 assert(termchars_equal(&ldata
->chars
[i
], &dcl
->chars
[i
]));
711 #ifdef DIAGNOSTIC_SB_COMPRESSION
712 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
713 ldata
->cols
, 4 * ldata
->cols
, dused
,
714 (double)dused
/ (4 * ldata
->cols
));
720 #endif /* TERM_CC_DIAGS */
723 * Trim the allocated memory so we don't waste any, and return.
725 return sresize(b
->data
, b
->len
, unsigned char);
728 static void readrle(struct buf
*b
, termline
*ldata
,
729 void (*readliteral
)(struct buf
*b
, termchar
*c
,
730 termline
*ldata
, unsigned long *state
))
733 unsigned long state
= 0;
735 while (n
< ldata
->cols
) {
741 int pos
= b
->len
, count
= hdr
+ 2 - 0x80;
743 assert(n
< ldata
->cols
);
745 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
749 /* Just a sequence of consecutive literals. */
753 assert(n
< ldata
->cols
);
754 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
760 assert(n
== ldata
->cols
);
762 static void readliteral_chr(struct buf
*b
, termchar
*c
, termline
*ldata
,
763 unsigned long *state
)
768 * 00000000-0000007F: 0xxxxxxx
769 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
770 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
771 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
772 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
777 c
->chr
= byte
| *state
;
778 } else if (byte
< 0xC0) {
779 c
->chr
= (byte
&~ 0xC0) << 8;
781 } else if (byte
< 0xE0) {
782 c
->chr
= (byte
&~ 0xE0) << 16;
783 c
->chr
|= get(b
) << 8;
785 } else if (byte
< 0xF0) {
786 c
->chr
= (byte
&~ 0xF0) << 24;
787 c
->chr
|= get(b
) << 16;
788 c
->chr
|= get(b
) << 8;
791 assert(byte
== 0xF0);
792 c
->chr
= get(b
) << 24;
793 c
->chr
|= get(b
) << 16;
794 c
->chr
|= get(b
) << 8;
797 *state
= c
->chr
& ~0xFF;
799 static void readliteral_attr(struct buf
*b
, termchar
*c
, termline
*ldata
,
800 unsigned long *state
)
802 unsigned val
, attr
, colourbits
;
814 colourbits
= (val
>> (32-9)) & 0xFF;
815 attr
= (val
& ((1<<(32-9))-1));
817 attr
= (((attr
>> (ATTR_FGSHIFT
+ 4)) << (ATTR_FGSHIFT
+ 8)) |
818 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
819 attr
= (((attr
>> (ATTR_BGSHIFT
+ 4)) << (ATTR_BGSHIFT
+ 8)) |
820 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
822 attr
|= (colourbits
>> 4) << (ATTR_BGSHIFT
+ 4);
823 attr
|= (colourbits
& 0xF) << (ATTR_FGSHIFT
+ 4);
827 static void readliteral_cc(struct buf
*b
, termchar
*c
, termline
*ldata
,
828 unsigned long *state
)
831 unsigned long zstate
;
832 int x
= c
- ldata
->chars
;
838 readliteral_chr(b
, &n
, ldata
, &zstate
);
841 add_cc(ldata
, x
, n
.chr
);
845 static termline
*decompressline(unsigned char *data
, int *bytes_used
)
847 int ncols
, byte
, shift
;
848 struct buf buffer
, *b
= &buffer
;
855 * First read in the column count.
860 ncols
|= (byte
& 0x7F) << shift
;
862 } while (byte
& 0x80);
865 * Now create the output termline.
867 ldata
= snew(termline
);
868 ldata
->chars
= snewn(ncols
, termchar
);
869 ldata
->cols
= ldata
->size
= ncols
;
870 ldata
->temporary
= TRUE
;
874 * We must set all the cc pointers in ldata->chars to 0 right
875 * now, so that cc diagnostics that verify the integrity of the
876 * whole line will make sense while we're in the middle of
881 for (i
= 0; i
< ldata
->cols
; i
++)
882 ldata
->chars
[i
].cc_next
= 0;
886 * Now read in the lattr.
888 ldata
->lattr
= shift
= 0;
891 ldata
->lattr
|= (byte
& 0x7F) << shift
;
893 } while (byte
& 0x80);
896 * Now we read in each of the RLE streams in turn.
898 readrle(b
, ldata
, readliteral_chr
);
899 readrle(b
, ldata
, readliteral_attr
);
900 readrle(b
, ldata
, readliteral_cc
);
902 /* Return the number of bytes read, for diagnostic purposes. */
904 *bytes_used
= b
->len
;
910 * Resize a line to make it `cols' columns wide.
912 static void resizeline(Terminal
*term
, termline
*line
, int cols
)
916 if (line
->cols
!= cols
) {
918 oldcols
= line
->cols
;
921 * This line is the wrong length, which probably means it
922 * hasn't been accessed since a resize. Resize it now.
924 * First, go through all the characters that will be thrown
925 * out in the resize (if we're shrinking the line) and
926 * return their cc lists to the cc free list.
928 for (i
= cols
; i
< oldcols
; i
++)
932 * If we're shrinking the line, we now bodily move the
933 * entire cc section from where it started to where it now
934 * needs to be. (We have to do this before the resize, so
935 * that the data we're copying is still there. However, if
936 * we're expanding, we have to wait until _after_ the
937 * resize so that the space we're copying into is there.)
940 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
941 (line
->size
- line
->cols
) * TSIZE
);
944 * Now do the actual resize, leaving the _same_ amount of
945 * cc space as there was to begin with.
947 line
->size
+= cols
- oldcols
;
948 line
->chars
= sresize(line
->chars
, line
->size
, TTYPE
);
952 * If we're expanding the line, _now_ we move the cc
956 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
957 (line
->size
- line
->cols
) * TSIZE
);
960 * Go through what's left of the original line, and adjust
961 * the first cc_next pointer in each list. (All the
962 * subsequent ones are still valid because they are
963 * relative offsets within the cc block.) Also do the same
964 * to the head of the cc_free list.
966 for (i
= 0; i
< oldcols
&& i
< cols
; i
++)
967 if (line
->chars
[i
].cc_next
)
968 line
->chars
[i
].cc_next
+= cols
- oldcols
;
970 line
->cc_free
+= cols
- oldcols
;
973 * And finally fill in the new space with erase chars. (We
974 * don't have to worry about cc lists here, because we
975 * _know_ the erase char doesn't have one.)
977 for (i
= oldcols
; i
< cols
; i
++)
978 line
->chars
[i
] = term
->basic_erase_char
;
987 * Get the number of lines in the scrollback.
989 static int sblines(Terminal
*term
)
991 int sblines
= count234(term
->scrollback
);
992 if (term
->erase_to_scrollback
&&
993 term
->alt_which
&& term
->alt_screen
) {
994 sblines
+= term
->alt_sblines
;
1000 * Retrieve a line of the screen or of the scrollback, according to
1001 * whether the y coordinate is non-negative or negative
1004 static termline
*lineptr(Terminal
*term
, int y
, int lineno
, int screen
)
1011 whichtree
= term
->screen
;
1018 if (term
->erase_to_scrollback
&&
1019 term
->alt_which
&& term
->alt_screen
) {
1020 altlines
= term
->alt_sblines
;
1022 if (y
< -altlines
) {
1023 whichtree
= term
->scrollback
;
1024 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
1026 whichtree
= term
->alt_screen
;
1027 treeindex
= y
+ term
->alt_sblines
;
1028 /* treeindex = y + count234(term->alt_screen); */
1031 if (whichtree
== term
->scrollback
) {
1032 unsigned char *cline
= index234(whichtree
, treeindex
);
1033 line
= decompressline(cline
, NULL
);
1035 line
= index234(whichtree
, treeindex
);
1038 /* We assume that we don't screw up and retrieve something out of range. */
1040 fatalbox("line==NULL in terminal.c\n"
1041 "lineno=%d y=%d w=%d h=%d\n"
1042 "count(scrollback=%p)=%d\n"
1043 "count(screen=%p)=%d\n"
1044 "count(alt=%p)=%d alt_sblines=%d\n"
1045 "whichtree=%p treeindex=%d\n\n"
1046 "Please contact <putty@projects.tartarus.org> "
1047 "and pass on the above information.",
1048 lineno
, y
, term
->cols
, term
->rows
,
1049 term
->scrollback
, count234(term
->scrollback
),
1050 term
->screen
, count234(term
->screen
),
1051 term
->alt_screen
, count234(term
->alt_screen
), term
->alt_sblines
,
1052 whichtree
, treeindex
);
1054 assert(line
!= NULL
);
1056 resizeline(term
, line
, term
->cols
);
1057 /* FIXME: should we sort the compressed scrollback out here? */
1062 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1063 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1065 static void term_schedule_tblink(Terminal
*term
);
1066 static void term_schedule_cblink(Terminal
*term
);
1068 static void term_timer(void *ctx
, unsigned long now
)
1070 Terminal
*term
= (Terminal
*)ctx
;
1073 if (term
->tblink_pending
&& now
== term
->next_tblink
) {
1074 term
->tblinker
= !term
->tblinker
;
1075 term
->tblink_pending
= FALSE
;
1076 term_schedule_tblink(term
);
1080 if (term
->cblink_pending
&& now
== term
->next_cblink
) {
1081 term
->cblinker
= !term
->cblinker
;
1082 term
->cblink_pending
= FALSE
;
1083 term_schedule_cblink(term
);
1087 if (term
->in_vbell
&& now
== term
->vbell_end
) {
1088 term
->in_vbell
= FALSE
;
1093 (term
->window_update_pending
&& now
== term
->next_update
))
1097 static void term_schedule_update(Terminal
*term
)
1099 if (!term
->window_update_pending
) {
1100 term
->window_update_pending
= TRUE
;
1101 term
->next_update
= schedule_timer(UPDATE_DELAY
, term_timer
, term
);
1106 * Call this whenever the terminal window state changes, to queue
1109 static void seen_disp_event(Terminal
*term
)
1111 term
->seen_disp_event
= TRUE
; /* for scrollback-reset-on-activity */
1112 term_schedule_update(term
);
1116 * Call when the terminal's blinking-text settings change, or when
1117 * a text blink has just occurred.
1119 static void term_schedule_tblink(Terminal
*term
)
1121 if (term
->blink_is_real
) {
1122 if (!term
->tblink_pending
)
1123 term
->next_tblink
= schedule_timer(TBLINK_DELAY
, term_timer
, term
);
1124 term
->tblink_pending
= TRUE
;
1126 term
->tblinker
= 1; /* reset when not in use */
1127 term
->tblink_pending
= FALSE
;
1132 * Likewise with cursor blinks.
1134 static void term_schedule_cblink(Terminal
*term
)
1136 if (term
->blink_cur
&& term
->has_focus
) {
1137 if (!term
->cblink_pending
)
1138 term
->next_cblink
= schedule_timer(CBLINK_DELAY
, term_timer
, term
);
1139 term
->cblink_pending
= TRUE
;
1141 term
->cblinker
= 1; /* reset when not in use */
1142 term
->cblink_pending
= FALSE
;
1147 * Call to reset cursor blinking on new output.
1149 static void term_reset_cblink(Terminal
*term
)
1151 seen_disp_event(term
);
1153 term
->cblink_pending
= FALSE
;
1154 term_schedule_cblink(term
);
1158 * Call to begin a visual bell.
1160 static void term_schedule_vbell(Terminal
*term
, int already_started
,
1163 long ticks_already_gone
;
1165 if (already_started
)
1166 ticks_already_gone
= GETTICKCOUNT() - startpoint
;
1168 ticks_already_gone
= 0;
1170 if (ticks_already_gone
< VBELL_DELAY
) {
1171 term
->in_vbell
= TRUE
;
1172 term
->vbell_end
= schedule_timer(VBELL_DELAY
- ticks_already_gone
,
1175 term
->in_vbell
= FALSE
;
1180 * Set up power-on settings for the terminal.
1181 * If 'clear' is false, don't actually clear the primary screen, and
1182 * position the cursor below the last non-blank line (scrolling if
1185 static void power_on(Terminal
*term
, int clear
)
1187 term
->alt_x
= term
->alt_y
= 0;
1188 term
->savecurs
.x
= term
->savecurs
.y
= 0;
1189 term
->alt_savecurs
.x
= term
->alt_savecurs
.y
= 0;
1190 term
->alt_t
= term
->marg_t
= 0;
1191 if (term
->rows
!= -1)
1192 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1194 term
->alt_b
= term
->marg_b
= 0;
1195 if (term
->cols
!= -1) {
1197 for (i
= 0; i
< term
->cols
; i
++)
1198 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1200 term
->alt_om
= term
->dec_om
= conf_get_int(term
->conf
, CONF_dec_om
);
1201 term
->alt_ins
= term
->insert
= FALSE
;
1202 term
->alt_wnext
= term
->wrapnext
=
1203 term
->save_wnext
= term
->alt_save_wnext
= FALSE
;
1204 term
->alt_wrap
= term
->wrap
= conf_get_int(term
->conf
, CONF_wrap_mode
);
1205 term
->alt_cset
= term
->cset
= term
->save_cset
= term
->alt_save_cset
= 0;
1206 term
->alt_utf
= term
->utf
= term
->save_utf
= term
->alt_save_utf
= 0;
1207 term
->utf_state
= 0;
1208 term
->alt_sco_acs
= term
->sco_acs
=
1209 term
->save_sco_acs
= term
->alt_save_sco_acs
= 0;
1210 term
->cset_attr
[0] = term
->cset_attr
[1] =
1211 term
->save_csattr
= term
->alt_save_csattr
= CSET_ASCII
;
1213 term
->in_vbell
= FALSE
;
1214 term
->cursor_on
= 1;
1215 term
->big_cursor
= 0;
1216 term
->default_attr
= term
->save_attr
=
1217 term
->alt_save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
1218 term
->term_editing
= term
->term_echoing
= FALSE
;
1219 term
->app_cursor_keys
= conf_get_int(term
->conf
, CONF_app_cursor
);
1220 term
->app_keypad_keys
= conf_get_int(term
->conf
, CONF_app_keypad
);
1221 term
->use_bce
= conf_get_int(term
->conf
, CONF_bce
);
1222 term
->blink_is_real
= conf_get_int(term
->conf
, CONF_blinktext
);
1223 term
->erase_char
= term
->basic_erase_char
;
1224 term
->alt_which
= 0;
1225 term_print_finish(term
);
1226 term
->xterm_mouse
= 0;
1227 set_raw_mouse_mode(term
->frontend
, FALSE
);
1228 term
->bracketed_paste
= FALSE
;
1231 for (i
= 0; i
< 256; i
++)
1232 term
->wordness
[i
] = conf_get_int_int(term
->conf
, CONF_wordness
, i
);
1235 swap_screen(term
, 1, FALSE
, FALSE
);
1236 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1237 swap_screen(term
, 0, FALSE
, FALSE
);
1239 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1240 term
->curs
.y
= find_last_nonempty_line(term
, term
->screen
) + 1;
1241 if (term
->curs
.y
== term
->rows
) {
1243 scroll(term
, 0, term
->rows
- 1, 1, TRUE
);
1249 term_schedule_tblink(term
);
1250 term_schedule_cblink(term
);
1254 * Force a screen update.
1256 void term_update(Terminal
*term
)
1260 term
->window_update_pending
= FALSE
;
1262 ctx
= get_ctx(term
->frontend
);
1264 int need_sbar_update
= term
->seen_disp_event
;
1265 if (term
->seen_disp_event
&& term
->scroll_on_disp
) {
1266 term
->disptop
= 0; /* return to main screen */
1267 term
->seen_disp_event
= 0;
1268 need_sbar_update
= TRUE
;
1271 if (need_sbar_update
)
1273 do_paint(term
, ctx
, TRUE
);
1274 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
1280 * Called from front end when a keypress occurs, to trigger
1281 * anything magical that needs to happen in that situation.
1283 void term_seen_key_event(Terminal
*term
)
1286 * On any keypress, clear the bell overload mechanism
1287 * completely, on the grounds that large numbers of
1288 * beeps coming from deliberate key action are likely
1289 * to be intended (e.g. beeps from filename completion
1290 * blocking repeatedly).
1292 term
->beep_overloaded
= FALSE
;
1293 while (term
->beephead
) {
1294 struct beeptime
*tmp
= term
->beephead
;
1295 term
->beephead
= tmp
->next
;
1298 term
->beeptail
= NULL
;
1302 * Reset the scrollback on keypress, if we're doing that.
1304 if (term
->scroll_on_key
) {
1305 term
->disptop
= 0; /* return to main screen */
1306 seen_disp_event(term
);
1311 * Same as power_on(), but an external function.
1313 void term_pwron(Terminal
*term
, int clear
)
1315 power_on(term
, clear
);
1316 if (term
->ldisc
) /* cause ldisc to notice changes */
1317 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1323 static void set_erase_char(Terminal
*term
)
1325 term
->erase_char
= term
->basic_erase_char
;
1327 term
->erase_char
.attr
= (term
->curr_attr
&
1328 (ATTR_FGMASK
| ATTR_BGMASK
));
1332 * We copy a bunch of stuff out of the Conf structure into local
1333 * fields in the Terminal structure, to avoid the repeated tree234
1334 * lookups which would be involved in fetching them from the former
1337 void term_copy_stuff_from_conf(Terminal
*term
)
1339 term
->ansi_colour
= conf_get_int(term
->conf
, CONF_ansi_colour
);
1340 term
->arabicshaping
= conf_get_int(term
->conf
, CONF_arabicshaping
);
1341 term
->beep
= conf_get_int(term
->conf
, CONF_beep
);
1342 term
->bellovl
= conf_get_int(term
->conf
, CONF_bellovl
);
1343 term
->bellovl_n
= conf_get_int(term
->conf
, CONF_bellovl_n
);
1344 term
->bellovl_s
= conf_get_int(term
->conf
, CONF_bellovl_s
);
1345 term
->bellovl_t
= conf_get_int(term
->conf
, CONF_bellovl_t
);
1346 term
->bidi
= conf_get_int(term
->conf
, CONF_bidi
);
1347 term
->bksp_is_delete
= conf_get_int(term
->conf
, CONF_bksp_is_delete
);
1348 term
->blink_cur
= conf_get_int(term
->conf
, CONF_blink_cur
);
1349 term
->blinktext
= conf_get_int(term
->conf
, CONF_blinktext
);
1350 term
->cjk_ambig_wide
= conf_get_int(term
->conf
, CONF_cjk_ambig_wide
);
1351 term
->conf_height
= conf_get_int(term
->conf
, CONF_height
);
1352 term
->conf_width
= conf_get_int(term
->conf
, CONF_width
);
1353 term
->crhaslf
= conf_get_int(term
->conf
, CONF_crhaslf
);
1354 term
->erase_to_scrollback
= conf_get_int(term
->conf
, CONF_erase_to_scrollback
);
1355 term
->funky_type
= conf_get_int(term
->conf
, CONF_funky_type
);
1356 term
->lfhascr
= conf_get_int(term
->conf
, CONF_lfhascr
);
1357 term
->logflush
= conf_get_int(term
->conf
, CONF_logflush
);
1358 term
->logtype
= conf_get_int(term
->conf
, CONF_logtype
);
1359 term
->mouse_override
= conf_get_int(term
->conf
, CONF_mouse_override
);
1360 term
->nethack_keypad
= conf_get_int(term
->conf
, CONF_nethack_keypad
);
1361 term
->no_alt_screen
= conf_get_int(term
->conf
, CONF_no_alt_screen
);
1362 term
->no_applic_c
= conf_get_int(term
->conf
, CONF_no_applic_c
);
1363 term
->no_applic_k
= conf_get_int(term
->conf
, CONF_no_applic_k
);
1364 term
->no_dbackspace
= conf_get_int(term
->conf
, CONF_no_dbackspace
);
1365 term
->no_mouse_rep
= conf_get_int(term
->conf
, CONF_no_mouse_rep
);
1366 term
->no_remote_charset
= conf_get_int(term
->conf
, CONF_no_remote_charset
);
1367 term
->no_remote_resize
= conf_get_int(term
->conf
, CONF_no_remote_resize
);
1368 term
->no_remote_wintitle
= conf_get_int(term
->conf
, CONF_no_remote_wintitle
);
1369 term
->rawcnp
= conf_get_int(term
->conf
, CONF_rawcnp
);
1370 term
->rect_select
= conf_get_int(term
->conf
, CONF_rect_select
);
1371 term
->remote_qtitle_action
= conf_get_int(term
->conf
, CONF_remote_qtitle_action
);
1372 term
->rxvt_homeend
= conf_get_int(term
->conf
, CONF_rxvt_homeend
);
1373 term
->scroll_on_disp
= conf_get_int(term
->conf
, CONF_scroll_on_disp
);
1374 term
->scroll_on_key
= conf_get_int(term
->conf
, CONF_scroll_on_key
);
1375 term
->xterm_256_colour
= conf_get_int(term
->conf
, CONF_xterm_256_colour
);
1378 * Parse the control-character escapes in the configured
1379 * answerback string.
1382 char *answerback
= conf_get_str(term
->conf
, CONF_answerback
);
1383 int maxlen
= strlen(answerback
);
1385 term
->answerback
= snewn(maxlen
, char);
1386 term
->answerbacklen
= 0;
1388 while (*answerback
) {
1390 char c
= ctrlparse(answerback
, &n
);
1392 term
->answerback
[term
->answerbacklen
++] = c
;
1395 term
->answerback
[term
->answerbacklen
++] = *answerback
++;
1402 * When the user reconfigures us, we need to check the forbidden-
1403 * alternate-screen config option, disable raw mouse mode if the
1404 * user has disabled mouse reporting, and abandon a print job if
1405 * the user has disabled printing.
1407 void term_reconfig(Terminal
*term
, Conf
*conf
)
1410 * Before adopting the new config, check all those terminal
1411 * settings which control power-on defaults; and if they've
1412 * changed, we will modify the current state as well as the
1413 * default one. The full list is: Auto wrap mode, DEC Origin
1414 * Mode, BCE, blinking text, character classes.
1416 int reset_wrap
, reset_decom
, reset_bce
, reset_tblink
, reset_charclass
;
1419 reset_wrap
= (conf_get_int(term
->conf
, CONF_wrap_mode
) !=
1420 conf_get_int(conf
, CONF_wrap_mode
));
1421 reset_decom
= (conf_get_int(term
->conf
, CONF_dec_om
) !=
1422 conf_get_int(conf
, CONF_dec_om
));
1423 reset_bce
= (conf_get_int(term
->conf
, CONF_bce
) !=
1424 conf_get_int(conf
, CONF_bce
));
1425 reset_tblink
= (conf_get_int(term
->conf
, CONF_blinktext
) !=
1426 conf_get_int(conf
, CONF_blinktext
));
1427 reset_charclass
= 0;
1428 for (i
= 0; i
< 256; i
++)
1429 if (conf_get_int_int(term
->conf
, CONF_wordness
, i
) !=
1430 conf_get_int_int(conf
, CONF_wordness
, i
))
1431 reset_charclass
= 1;
1434 * If the bidi or shaping settings have changed, flush the bidi
1437 if (conf_get_int(term
->conf
, CONF_arabicshaping
) !=
1438 conf_get_int(conf
, CONF_arabicshaping
) ||
1439 conf_get_int(term
->conf
, CONF_bidi
) !=
1440 conf_get_int(conf
, CONF_bidi
)) {
1441 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1442 sfree(term
->pre_bidi_cache
[i
].chars
);
1443 sfree(term
->post_bidi_cache
[i
].chars
);
1444 term
->pre_bidi_cache
[i
].width
= -1;
1445 term
->pre_bidi_cache
[i
].chars
= NULL
;
1446 term
->post_bidi_cache
[i
].width
= -1;
1447 term
->post_bidi_cache
[i
].chars
= NULL
;
1451 conf_free(term
->conf
);
1452 term
->conf
= conf_copy(conf
);
1455 term
->alt_wrap
= term
->wrap
= conf_get_int(term
->conf
, CONF_wrap_mode
);
1457 term
->alt_om
= term
->dec_om
= conf_get_int(term
->conf
, CONF_dec_om
);
1459 term
->use_bce
= conf_get_int(term
->conf
, CONF_bce
);
1460 set_erase_char(term
);
1463 term
->blink_is_real
= conf_get_int(term
->conf
, CONF_blinktext
);
1465 if (reset_charclass
)
1466 for (i
= 0; i
< 256; i
++)
1467 term
->wordness
[i
] = conf_get_int_int(term
->conf
, CONF_wordness
, i
);
1469 if (conf_get_int(term
->conf
, CONF_no_alt_screen
))
1470 swap_screen(term
, 0, FALSE
, FALSE
);
1471 if (conf_get_int(term
->conf
, CONF_no_mouse_rep
)) {
1472 term
->xterm_mouse
= 0;
1473 set_raw_mouse_mode(term
->frontend
, 0);
1475 if (conf_get_int(term
->conf
, CONF_no_remote_charset
)) {
1476 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
1477 term
->sco_acs
= term
->alt_sco_acs
= 0;
1480 if (!conf_get_str(term
->conf
, CONF_printer
)) {
1481 term_print_finish(term
);
1483 term_schedule_tblink(term
);
1484 term_schedule_cblink(term
);
1485 term_copy_stuff_from_conf(term
);
1489 * Clear the scrollback.
1491 void term_clrsb(Terminal
*term
)
1493 unsigned char *line
;
1495 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
1496 sfree(line
); /* this is compressed data, not a termline */
1498 term
->tempsblines
= 0;
1499 term
->alt_sblines
= 0;
1504 * Initialise the terminal.
1506 Terminal
*term_init(Conf
*myconf
, struct unicode_data
*ucsdata
,
1512 * Allocate a new Terminal structure and initialise the fields
1515 term
= snew(Terminal
);
1516 term
->frontend
= frontend
;
1517 term
->ucsdata
= ucsdata
;
1518 term
->conf
= conf_copy(myconf
);
1519 term
->logctx
= NULL
;
1520 term
->compatibility_level
= TM_PUTTY
;
1521 strcpy(term
->id_string
, "\033[?6c");
1522 term
->cblink_pending
= term
->tblink_pending
= FALSE
;
1523 term
->paste_buffer
= NULL
;
1524 term
->paste_len
= 0;
1525 term
->last_paste
= 0;
1526 bufchain_init(&term
->inbuf
);
1527 bufchain_init(&term
->printer_buf
);
1528 term
->printing
= term
->only_printing
= FALSE
;
1529 term
->print_job
= NULL
;
1530 term
->vt52_mode
= FALSE
;
1531 term
->cr_lf_return
= FALSE
;
1532 term
->seen_disp_event
= FALSE
;
1533 term
->mouse_is_down
= FALSE
;
1534 term
->reset_132
= FALSE
;
1535 term
->cblinker
= term
->tblinker
= 0;
1536 term
->has_focus
= 1;
1537 term
->repeat_off
= FALSE
;
1538 term
->termstate
= TOPLEVEL
;
1539 term
->selstate
= NO_SELECTION
;
1542 term_copy_stuff_from_conf(term
);
1544 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
1545 term
->tempsblines
= 0;
1546 term
->alt_sblines
= 0;
1548 term
->disptext
= NULL
;
1549 term
->dispcursx
= term
->dispcursy
= -1;
1552 term
->rows
= term
->cols
= -1;
1553 power_on(term
, TRUE
);
1554 term
->beephead
= term
->beeptail
= NULL
;
1555 #ifdef OPTIMISE_SCROLL
1556 term
->scrollhead
= term
->scrolltail
= NULL
;
1557 #endif /* OPTIMISE_SCROLL */
1559 term
->lastbeep
= FALSE
;
1560 term
->beep_overloaded
= FALSE
;
1561 term
->attr_mask
= 0xffffffff;
1562 term
->resize_fn
= NULL
;
1563 term
->resize_ctx
= NULL
;
1564 term
->in_term_out
= FALSE
;
1566 term
->ltemp_size
= 0;
1567 term
->wcFrom
= NULL
;
1569 term
->wcFromTo_size
= 0;
1571 term
->window_update_pending
= FALSE
;
1573 term
->bidi_cache_size
= 0;
1574 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
1577 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
1578 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
1579 term
->basic_erase_char
.cc_next
= 0;
1580 term
->erase_char
= term
->basic_erase_char
;
1585 void term_free(Terminal
*term
)
1588 struct beeptime
*beep
;
1591 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
1592 sfree(line
); /* compressed data, not a termline */
1593 freetree234(term
->scrollback
);
1594 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
1596 freetree234(term
->screen
);
1597 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
1599 freetree234(term
->alt_screen
);
1600 if (term
->disptext
) {
1601 for (i
= 0; i
< term
->rows
; i
++)
1602 freeline(term
->disptext
[i
]);
1604 sfree(term
->disptext
);
1605 while (term
->beephead
) {
1606 beep
= term
->beephead
;
1607 term
->beephead
= beep
->next
;
1610 bufchain_clear(&term
->inbuf
);
1612 printer_finish_job(term
->print_job
);
1613 bufchain_clear(&term
->printer_buf
);
1614 sfree(term
->paste_buffer
);
1616 sfree(term
->wcFrom
);
1619 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1620 sfree(term
->pre_bidi_cache
[i
].chars
);
1621 sfree(term
->post_bidi_cache
[i
].chars
);
1622 sfree(term
->post_bidi_cache
[i
].forward
);
1623 sfree(term
->post_bidi_cache
[i
].backward
);
1625 sfree(term
->pre_bidi_cache
);
1626 sfree(term
->post_bidi_cache
);
1630 expire_timer_context(term
);
1632 conf_free(term
->conf
);
1638 * Set up the terminal for a given size.
1640 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1643 termline
**newdisp
, *line
;
1644 int i
, j
, oldrows
= term
->rows
;
1646 int save_alt_which
= term
->alt_which
;
1648 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1649 newsavelines
== term
->savelines
)
1650 return; /* nothing to do */
1652 /* Behave sensibly if we're given zero (or negative) rows/cols */
1654 if (newrows
< 1) newrows
= 1;
1655 if (newcols
< 1) newcols
= 1;
1658 swap_screen(term
, 0, FALSE
, FALSE
);
1660 term
->alt_t
= term
->marg_t
= 0;
1661 term
->alt_b
= term
->marg_b
= newrows
- 1;
1663 if (term
->rows
== -1) {
1664 term
->scrollback
= newtree234(NULL
);
1665 term
->screen
= newtree234(NULL
);
1666 term
->tempsblines
= 0;
1671 * Resize the screen and scrollback. We only need to shift
1672 * lines around within our data structures, because lineptr()
1673 * will take care of resizing each individual line if
1676 * - If the new screen is longer, we shunt lines in from temporary
1677 * scrollback if possible, otherwise we add new blank lines at
1680 * - If the new screen is shorter, we remove any blank lines at
1681 * the bottom if possible, otherwise shunt lines above the cursor
1682 * to scrollback if possible, otherwise delete lines below the
1685 * - Then, if the new scrollback length is less than the
1686 * amount of scrollback we actually have, we must throw some
1689 sblen
= count234(term
->scrollback
);
1690 /* Do this loop to expand the screen if newrows > rows */
1691 assert(term
->rows
== count234(term
->screen
));
1692 while (term
->rows
< newrows
) {
1693 if (term
->tempsblines
> 0) {
1694 unsigned char *cline
;
1695 /* Insert a line from the scrollback at the top of the screen. */
1696 assert(sblen
>= term
->tempsblines
);
1697 cline
= delpos234(term
->scrollback
, --sblen
);
1698 line
= decompressline(cline
, NULL
);
1700 line
->temporary
= FALSE
; /* reconstituted line is now real */
1701 term
->tempsblines
-= 1;
1702 addpos234(term
->screen
, line
, 0);
1704 term
->savecurs
.y
+= 1;
1706 term
->alt_savecurs
.y
+= 1;
1708 /* Add a new blank line at the bottom of the screen. */
1709 line
= newline(term
, newcols
, FALSE
);
1710 addpos234(term
->screen
, line
, count234(term
->screen
));
1714 /* Do this loop to shrink the screen if newrows < rows */
1715 while (term
->rows
> newrows
) {
1716 if (term
->curs
.y
< term
->rows
- 1) {
1717 /* delete bottom row, unless it contains the cursor */
1718 line
= delpos234(term
->screen
, term
->rows
- 1);
1721 /* push top row to scrollback */
1722 line
= delpos234(term
->screen
, 0);
1723 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1725 term
->tempsblines
+= 1;
1727 term
->savecurs
.y
-= 1;
1729 term
->alt_savecurs
.y
-= 1;
1733 assert(term
->rows
== newrows
);
1734 assert(count234(term
->screen
) == newrows
);
1736 /* Delete any excess lines from the scrollback. */
1737 while (sblen
> newsavelines
) {
1738 line
= delpos234(term
->scrollback
, 0);
1742 if (sblen
< term
->tempsblines
)
1743 term
->tempsblines
= sblen
;
1744 assert(count234(term
->scrollback
) <= newsavelines
);
1745 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1748 /* Make a new displayed text buffer. */
1749 newdisp
= snewn(newrows
, termline
*);
1750 for (i
= 0; i
< newrows
; i
++) {
1751 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1752 for (j
= 0; j
< newcols
; j
++)
1753 newdisp
[i
]->chars
[j
].attr
= ATTR_INVALID
;
1755 if (term
->disptext
) {
1756 for (i
= 0; i
< oldrows
; i
++)
1757 freeline(term
->disptext
[i
]);
1759 sfree(term
->disptext
);
1760 term
->disptext
= newdisp
;
1761 term
->dispcursx
= term
->dispcursy
= -1;
1763 /* Make a new alternate screen. */
1764 newalt
= newtree234(NULL
);
1765 for (i
= 0; i
< newrows
; i
++) {
1766 line
= newline(term
, newcols
, TRUE
);
1767 addpos234(newalt
, line
, i
);
1769 if (term
->alt_screen
) {
1770 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1772 freetree234(term
->alt_screen
);
1774 term
->alt_screen
= newalt
;
1775 term
->alt_sblines
= 0;
1777 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1780 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1781 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1784 /* Check that the cursor positions are still valid. */
1785 if (term
->savecurs
.y
< 0)
1786 term
->savecurs
.y
= 0;
1787 if (term
->savecurs
.y
>= newrows
)
1788 term
->savecurs
.y
= newrows
- 1;
1789 if (term
->savecurs
.x
>= newcols
)
1790 term
->savecurs
.x
= newcols
- 1;
1791 if (term
->alt_savecurs
.y
< 0)
1792 term
->alt_savecurs
.y
= 0;
1793 if (term
->alt_savecurs
.y
>= newrows
)
1794 term
->alt_savecurs
.y
= newrows
- 1;
1795 if (term
->alt_savecurs
.x
>= newcols
)
1796 term
->alt_savecurs
.x
= newcols
- 1;
1797 if (term
->curs
.y
< 0)
1799 if (term
->curs
.y
>= newrows
)
1800 term
->curs
.y
= newrows
- 1;
1801 if (term
->curs
.x
>= newcols
)
1802 term
->curs
.x
= newcols
- 1;
1803 if (term
->alt_y
< 0)
1805 if (term
->alt_y
>= newrows
)
1806 term
->alt_y
= newrows
- 1;
1807 if (term
->alt_x
>= newcols
)
1808 term
->alt_x
= newcols
- 1;
1809 term
->alt_x
= term
->alt_y
= 0;
1810 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1812 term
->rows
= newrows
;
1813 term
->cols
= newcols
;
1814 term
->savelines
= newsavelines
;
1816 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1820 if (term
->resize_fn
)
1821 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1825 * Hand a function and context pointer to the terminal which it can
1826 * use to notify a back end of resizes.
1828 void term_provide_resize_fn(Terminal
*term
,
1829 void (*resize_fn
)(void *, int, int),
1832 term
->resize_fn
= resize_fn
;
1833 term
->resize_ctx
= resize_ctx
;
1834 if (resize_fn
&& term
->cols
> 0 && term
->rows
> 0)
1835 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1838 /* Find the bottom line on the screen that has any content.
1839 * If only the top line has content, returns 0.
1840 * If no lines have content, return -1.
1842 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1845 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1846 termline
*line
= index234(screen
, i
);
1848 for (j
= 0; j
< line
->cols
; j
++)
1849 if (!termchars_equal(&line
->chars
[j
], &term
->erase_char
))
1851 if (j
!= line
->cols
) break;
1857 * Swap screens. If `reset' is TRUE and we have been asked to
1858 * switch to the alternate screen, we must bring most of its
1859 * configuration from the main screen and erase the contents of the
1860 * alternate screen completely. (This is even true if we're already
1861 * on it! Blame xterm.)
1863 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1870 reset
= FALSE
; /* do no weird resetting if which==0 */
1872 if (which
!= term
->alt_which
) {
1873 term
->alt_which
= which
;
1875 ttr
= term
->alt_screen
;
1876 term
->alt_screen
= term
->screen
;
1878 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1880 if (!reset
&& !keep_cur_pos
)
1881 term
->curs
.x
= term
->alt_x
;
1884 if (!reset
&& !keep_cur_pos
)
1885 term
->curs
.y
= term
->alt_y
;
1888 if (!reset
) term
->marg_t
= term
->alt_t
;
1891 if (!reset
) term
->marg_b
= term
->alt_b
;
1894 if (!reset
) term
->dec_om
= term
->alt_om
;
1897 if (!reset
) term
->wrap
= term
->alt_wrap
;
1900 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1901 term
->alt_wnext
= t
;
1903 if (!reset
) term
->insert
= term
->alt_ins
;
1906 if (!reset
) term
->cset
= term
->alt_cset
;
1909 if (!reset
) term
->utf
= term
->alt_utf
;
1912 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1913 term
->alt_sco_acs
= t
;
1915 tp
= term
->savecurs
;
1916 if (!reset
&& !keep_cur_pos
)
1917 term
->savecurs
= term
->alt_savecurs
;
1918 term
->alt_savecurs
= tp
;
1919 t
= term
->save_cset
;
1920 if (!reset
&& !keep_cur_pos
)
1921 term
->save_cset
= term
->alt_save_cset
;
1922 term
->alt_save_cset
= t
;
1923 t
= term
->save_csattr
;
1924 if (!reset
&& !keep_cur_pos
)
1925 term
->save_csattr
= term
->alt_save_csattr
;
1926 term
->alt_save_csattr
= t
;
1927 t
= term
->save_attr
;
1928 if (!reset
&& !keep_cur_pos
)
1929 term
->save_attr
= term
->alt_save_attr
;
1930 term
->alt_save_attr
= t
;
1932 if (!reset
&& !keep_cur_pos
)
1933 term
->save_utf
= term
->alt_save_utf
;
1934 term
->alt_save_utf
= t
;
1935 t
= term
->save_wnext
;
1936 if (!reset
&& !keep_cur_pos
)
1937 term
->save_wnext
= term
->alt_save_wnext
;
1938 term
->alt_save_wnext
= t
;
1939 t
= term
->save_sco_acs
;
1940 if (!reset
&& !keep_cur_pos
)
1941 term
->save_sco_acs
= term
->alt_save_sco_acs
;
1942 term
->alt_save_sco_acs
= t
;
1945 if (reset
&& term
->screen
) {
1947 * Yes, this _is_ supposed to honour background-colour-erase.
1949 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1954 * Update the scroll bar.
1956 static void update_sbar(Terminal
*term
)
1958 int nscroll
= sblines(term
);
1959 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1960 nscroll
+ term
->disptop
, term
->rows
);
1964 * Check whether the region bounded by the two pointers intersects
1965 * the scroll region, and de-select the on-screen selection if so.
1967 static void check_selection(Terminal
*term
, pos from
, pos to
)
1969 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1974 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1975 * for backward.) `sb' is TRUE if the scrolling is permitted to
1976 * affect the scrollback buffer.
1978 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1981 int i
, seltop
, scrollwinsize
;
1982 #ifdef OPTIMISE_SCROLL
1983 int olddisptop
, shift
;
1984 #endif /* OPTIMISE_SCROLL */
1986 if (topline
!= 0 || term
->alt_which
!= 0)
1989 #ifdef OPTIMISE_SCROLL
1990 olddisptop
= term
->disptop
;
1992 #endif /* OPTIMISE_SCROLL */
1994 scrollwinsize
= botline
- topline
+ 1;
1998 if (lines
> scrollwinsize
)
1999 lines
= scrollwinsize
;
2000 while (lines
-- > 0) {
2001 line
= delpos234(term
->screen
, botline
);
2002 resizeline(term
, line
, term
->cols
);
2003 for (i
= 0; i
< term
->cols
; i
++)
2004 copy_termchar(line
, i
, &term
->erase_char
);
2005 line
->lattr
= LATTR_NORM
;
2006 addpos234(term
->screen
, line
, topline
);
2008 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
2010 if (term
->selstart
.y
> botline
) {
2011 term
->selstart
.y
= botline
+ 1;
2012 term
->selstart
.x
= 0;
2015 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
2017 if (term
->selend
.y
> botline
) {
2018 term
->selend
.y
= botline
+ 1;
2024 if (lines
> scrollwinsize
)
2025 lines
= scrollwinsize
;
2026 while (lines
-- > 0) {
2027 line
= delpos234(term
->screen
, topline
);
2028 #ifdef TERM_CC_DIAGS
2031 if (sb
&& term
->savelines
> 0) {
2032 int sblen
= count234(term
->scrollback
);
2034 * We must add this line to the scrollback. We'll
2035 * remove a line from the top of the scrollback if
2036 * the scrollback is full.
2038 if (sblen
== term
->savelines
) {
2039 unsigned char *cline
;
2042 cline
= delpos234(term
->scrollback
, 0);
2045 term
->tempsblines
+= 1;
2047 addpos234(term
->scrollback
, compressline(line
), sblen
);
2049 /* now `line' itself can be reused as the bottom line */
2052 * If the user is currently looking at part of the
2053 * scrollback, and they haven't enabled any options
2054 * that are going to reset the scrollback as a
2055 * result of this movement, then the chances are
2056 * they'd like to keep looking at the same line. So
2057 * we move their viewpoint at the same rate as the
2058 * scroll, at least until their viewpoint hits the
2059 * top end of the scrollback buffer, at which point
2060 * we don't have the choice any more.
2062 * Thanks to Jan Holmen Holsten for the idea and
2063 * initial implementation.
2065 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
2068 resizeline(term
, line
, term
->cols
);
2069 for (i
= 0; i
< term
->cols
; i
++)
2070 copy_termchar(line
, i
, &term
->erase_char
);
2071 line
->lattr
= LATTR_NORM
;
2072 addpos234(term
->screen
, line
, botline
);
2075 * If the selection endpoints move into the scrollback,
2076 * we keep them moving until they hit the top. However,
2077 * of course, if the line _hasn't_ moved into the
2078 * scrollback then we don't do this, and cut them off
2079 * at the top of the scroll region.
2081 * This applies to selstart and selend (for an existing
2082 * selection), and also selanchor (for one being
2083 * selected as we speak).
2085 seltop
= sb ?
-term
->savelines
: topline
;
2087 if (term
->selstate
!= NO_SELECTION
) {
2088 if (term
->selstart
.y
>= seltop
&&
2089 term
->selstart
.y
<= botline
) {
2091 if (term
->selstart
.y
< seltop
) {
2092 term
->selstart
.y
= seltop
;
2093 term
->selstart
.x
= 0;
2096 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
2098 if (term
->selend
.y
< seltop
) {
2099 term
->selend
.y
= seltop
;
2103 if (term
->selanchor
.y
>= seltop
&&
2104 term
->selanchor
.y
<= botline
) {
2105 term
->selanchor
.y
--;
2106 if (term
->selanchor
.y
< seltop
) {
2107 term
->selanchor
.y
= seltop
;
2108 term
->selanchor
.x
= 0;
2114 #ifdef OPTIMISE_SCROLL
2115 shift
+= term
->disptop
- olddisptop
;
2116 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
2117 scroll_display(term
, topline
, botline
, shift
);
2118 #endif /* OPTIMISE_SCROLL */
2121 #ifdef OPTIMISE_SCROLL
2123 * Add a scroll of a region on the screen into the pending scroll list.
2124 * `lines' is +ve for scrolling forward, -ve for backward.
2126 * If the scroll is on the same area as the last scroll in the list,
2129 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
2131 struct scrollregion
*newscroll
;
2132 if (term
->scrolltail
&&
2133 term
->scrolltail
->topline
== topline
&&
2134 term
->scrolltail
->botline
== botline
) {
2135 term
->scrolltail
->lines
+= lines
;
2137 newscroll
= snew(struct scrollregion
);
2138 newscroll
->topline
= topline
;
2139 newscroll
->botline
= botline
;
2140 newscroll
->lines
= lines
;
2141 newscroll
->next
= NULL
;
2143 if (!term
->scrollhead
)
2144 term
->scrollhead
= newscroll
;
2146 term
->scrolltail
->next
= newscroll
;
2147 term
->scrolltail
= newscroll
;
2152 * Scroll the physical display, and our conception of it in disptext.
2154 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
2156 int distance
, nlines
, i
, j
;
2158 distance
= lines
> 0 ? lines
: -lines
;
2159 nlines
= botline
- topline
+ 1 - distance
;
2161 for (i
= 0; i
< nlines
; i
++)
2162 for (j
= 0; j
< term
->cols
; j
++)
2163 copy_termchar(term
->disptext
[i
], j
,
2164 term
->disptext
[i
+distance
]->chars
+j
);
2165 if (term
->dispcursy
>= 0 &&
2166 term
->dispcursy
>= topline
+ distance
&&
2167 term
->dispcursy
< topline
+ distance
+ nlines
)
2168 term
->dispcursy
-= distance
;
2169 for (i
= 0; i
< distance
; i
++)
2170 for (j
= 0; j
< term
->cols
; j
++)
2171 term
->disptext
[nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
2173 for (i
= nlines
; i
-- ;)
2174 for (j
= 0; j
< term
->cols
; j
++)
2175 copy_termchar(term
->disptext
[i
+distance
], j
,
2176 term
->disptext
[i
]->chars
+j
);
2177 if (term
->dispcursy
>= 0 &&
2178 term
->dispcursy
>= topline
&&
2179 term
->dispcursy
< topline
+ nlines
)
2180 term
->dispcursy
+= distance
;
2181 for (i
= 0; i
< distance
; i
++)
2182 for (j
= 0; j
< term
->cols
; j
++)
2183 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
2185 save_scroll(term
, topline
, botline
, lines
);
2187 #endif /* OPTIMISE_SCROLL */
2190 * Move the cursor to a given position, clipping at boundaries. We
2191 * may or may not want to clip at the scroll margin: marg_clip is 0
2192 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2193 * even _being_ outside the margins.
2195 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
2199 if (x
>= term
->cols
)
2202 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
2205 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
2211 if (y
>= term
->rows
)
2215 term
->wrapnext
= FALSE
;
2219 * Save or restore the cursor and SGR mode.
2221 static void save_cursor(Terminal
*term
, int save
)
2224 term
->savecurs
= term
->curs
;
2225 term
->save_attr
= term
->curr_attr
;
2226 term
->save_cset
= term
->cset
;
2227 term
->save_utf
= term
->utf
;
2228 term
->save_wnext
= term
->wrapnext
;
2229 term
->save_csattr
= term
->cset_attr
[term
->cset
];
2230 term
->save_sco_acs
= term
->sco_acs
;
2232 term
->curs
= term
->savecurs
;
2233 /* Make sure the window hasn't shrunk since the save */
2234 if (term
->curs
.x
>= term
->cols
)
2235 term
->curs
.x
= term
->cols
- 1;
2236 if (term
->curs
.y
>= term
->rows
)
2237 term
->curs
.y
= term
->rows
- 1;
2239 term
->curr_attr
= term
->save_attr
;
2240 term
->cset
= term
->save_cset
;
2241 term
->utf
= term
->save_utf
;
2242 term
->wrapnext
= term
->save_wnext
;
2244 * wrapnext might reset to False if the x position is no
2245 * longer at the rightmost edge.
2247 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
2248 term
->wrapnext
= FALSE
;
2249 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
2250 term
->sco_acs
= term
->save_sco_acs
;
2251 set_erase_char(term
);
2256 * This function is called before doing _anything_ which affects
2257 * only part of a line of text. It is used to mark the boundary
2258 * between two character positions, and it indicates that some sort
2259 * of effect is going to happen on only one side of that boundary.
2261 * The effect of this function is to check whether a CJK
2262 * double-width character is straddling the boundary, and to remove
2263 * it and replace it with two spaces if so. (Of course, one or
2264 * other of those spaces is then likely to be replaced with
2265 * something else again, as a result of whatever happens next.)
2267 * Also, if the boundary is at the right-hand _edge_ of the screen,
2268 * it implies something deliberate is being done to the rightmost
2269 * column position; hence we must clear LATTR_WRAPPED2.
2271 * The input to the function is the coordinates of the _second_
2272 * character of the pair.
2274 static void check_boundary(Terminal
*term
, int x
, int y
)
2278 /* Validate input coordinates, just in case. */
2279 if (x
== 0 || x
> term
->cols
)
2282 ldata
= scrlineptr(y
);
2283 if (x
== term
->cols
) {
2284 ldata
->lattr
&= ~LATTR_WRAPPED2
;
2286 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
2287 clear_cc(ldata
, x
-1);
2289 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
2290 ldata
->chars
[x
] = ldata
->chars
[x
-1];
2296 * Erase a large portion of the screen: the whole screen, or the
2297 * whole line, or parts thereof.
2299 static void erase_lots(Terminal
*term
,
2300 int line_only
, int from_begin
, int to_end
)
2304 int erasing_lines_from_top
= 0;
2307 start
.y
= term
->curs
.y
;
2309 end
.y
= term
->curs
.y
+ 1;
2311 erase_lattr
= FALSE
;
2326 if (!from_begin
|| !to_end
)
2327 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2328 check_selection(term
, start
, end
);
2330 /* Clear screen also forces a full window redraw, just in case. */
2331 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
2332 term_invalidate(term
);
2334 /* Lines scrolled away shouldn't be brought back on if the terminal
2336 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
2337 erasing_lines_from_top
= 1;
2339 if (term
->erase_to_scrollback
&& erasing_lines_from_top
) {
2340 /* If it's a whole number of lines, starting at the top, and
2341 * we're fully erasing them, erase by scrolling and keep the
2342 * lines in the scrollback. */
2343 int scrolllines
= end
.y
;
2344 if (end
.y
== term
->rows
) {
2345 /* Shrink until we find a non-empty row.*/
2346 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
2348 if (scrolllines
> 0)
2349 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
2351 termline
*ldata
= scrlineptr(start
.y
);
2352 while (poslt(start
, end
)) {
2353 if (start
.x
== term
->cols
) {
2355 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
2357 ldata
->lattr
= LATTR_NORM
;
2359 copy_termchar(ldata
, start
.x
, &term
->erase_char
);
2361 if (incpos(start
) && start
.y
< term
->rows
) {
2362 ldata
= scrlineptr(start
.y
);
2367 /* After an erase of lines from the top of the screen, we shouldn't
2368 * bring the lines back again if the terminal enlarges (since the user or
2369 * application has explictly thrown them away). */
2370 if (erasing_lines_from_top
&& !(term
->alt_which
))
2371 term
->tempsblines
= 0;
2375 * Insert or delete characters within the current line. n is +ve if
2376 * insertion is desired, and -ve for deletion.
2378 static void insch(Terminal
*term
, int n
)
2380 int dir
= (n
< 0 ?
-1 : +1);
2385 n
= (n
< 0 ?
-n
: n
);
2386 if (n
> term
->cols
- term
->curs
.x
)
2387 n
= term
->cols
- term
->curs
.x
;
2388 m
= term
->cols
- term
->curs
.x
- n
;
2389 cursplus
.y
= term
->curs
.y
;
2390 cursplus
.x
= term
->curs
.x
+ n
;
2391 check_selection(term
, term
->curs
, cursplus
);
2392 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2394 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
2395 ldata
= scrlineptr(term
->curs
.y
);
2397 for (j
= 0; j
< m
; j
++)
2398 move_termchar(ldata
,
2399 ldata
->chars
+ term
->curs
.x
+ j
,
2400 ldata
->chars
+ term
->curs
.x
+ j
+ n
);
2402 copy_termchar(ldata
, term
->curs
.x
+ m
++, &term
->erase_char
);
2405 move_termchar(ldata
,
2406 ldata
->chars
+ term
->curs
.x
+ j
+ n
,
2407 ldata
->chars
+ term
->curs
.x
+ j
);
2409 copy_termchar(ldata
, term
->curs
.x
+ n
, &term
->erase_char
);
2414 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2415 * whether the mode is a DEC private one or a normal one.)
2417 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
2421 case 1: /* DECCKM: application cursor keys */
2422 term
->app_cursor_keys
= state
;
2424 case 2: /* DECANM: VT52 mode */
2425 term
->vt52_mode
= !state
;
2426 if (term
->vt52_mode
) {
2427 term
->blink_is_real
= FALSE
;
2428 term
->vt52_bold
= FALSE
;
2430 term
->blink_is_real
= term
->blinktext
;
2432 term_schedule_tblink(term
);
2434 case 3: /* DECCOLM: 80/132 columns */
2436 if (!term
->no_remote_resize
)
2437 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
2438 term
->reset_132
= state
;
2439 term
->alt_t
= term
->marg_t
= 0;
2440 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
2441 move(term
, 0, 0, 0);
2442 erase_lots(term
, FALSE
, TRUE
, TRUE
);
2444 case 5: /* DECSCNM: reverse video */
2446 * Toggle reverse video. If we receive an OFF within the
2447 * visual bell timeout period after an ON, we trigger an
2448 * effective visual bell, so that ESC[?5hESC[?5l will
2449 * always be an actually _visible_ visual bell.
2451 if (term
->rvideo
&& !state
) {
2452 /* This is an OFF, so set up a vbell */
2453 term_schedule_vbell(term
, TRUE
, term
->rvbell_startpoint
);
2454 } else if (!term
->rvideo
&& state
) {
2455 /* This is an ON, so we notice the time and save it. */
2456 term
->rvbell_startpoint
= GETTICKCOUNT();
2458 term
->rvideo
= state
;
2459 seen_disp_event(term
);
2461 case 6: /* DECOM: DEC origin mode */
2462 term
->dec_om
= state
;
2464 case 7: /* DECAWM: auto wrap */
2467 case 8: /* DECARM: auto key repeat */
2468 term
->repeat_off
= !state
;
2470 case 10: /* DECEDM: set local edit mode */
2471 term
->term_editing
= state
;
2472 if (term
->ldisc
) /* cause ldisc to notice changes */
2473 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2475 case 25: /* DECTCEM: enable/disable cursor */
2476 compatibility2(OTHER
, VT220
);
2477 term
->cursor_on
= state
;
2478 seen_disp_event(term
);
2480 case 47: /* alternate screen */
2481 compatibility(OTHER
);
2483 swap_screen(term
, term
->no_alt_screen ?
0 : state
, FALSE
, FALSE
);
2486 case 1000: /* xterm mouse 1 (normal) */
2487 term
->xterm_mouse
= state ?
1 : 0;
2488 set_raw_mouse_mode(term
->frontend
, state
);
2490 case 1002: /* xterm mouse 2 (inc. button drags) */
2491 term
->xterm_mouse
= state ?
2 : 0;
2492 set_raw_mouse_mode(term
->frontend
, state
);
2494 case 1047: /* alternate screen */
2495 compatibility(OTHER
);
2497 swap_screen(term
, term
->no_alt_screen ?
0 : state
, TRUE
, TRUE
);
2500 case 1048: /* save/restore cursor */
2501 if (!term
->no_alt_screen
)
2502 save_cursor(term
, state
);
2503 if (!state
) seen_disp_event(term
);
2505 case 1049: /* cursor & alternate screen */
2506 if (state
&& !term
->no_alt_screen
)
2507 save_cursor(term
, state
);
2508 if (!state
) seen_disp_event(term
);
2509 compatibility(OTHER
);
2511 swap_screen(term
, term
->no_alt_screen ?
0 : state
, TRUE
, FALSE
);
2512 if (!state
&& !term
->no_alt_screen
)
2513 save_cursor(term
, state
);
2516 case 2004: /* xterm bracketed paste */
2517 term
->bracketed_paste
= state ? TRUE
: FALSE
;
2521 case 4: /* IRM: set insert mode */
2522 compatibility(VT102
);
2523 term
->insert
= state
;
2525 case 12: /* SRM: set echo mode */
2526 term
->term_echoing
= !state
;
2527 if (term
->ldisc
) /* cause ldisc to notice changes */
2528 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2530 case 20: /* LNM: Return sends ... */
2531 term
->cr_lf_return
= state
;
2533 case 34: /* WYULCURM: Make cursor BIG */
2534 compatibility2(OTHER
, VT220
);
2535 term
->big_cursor
= !state
;
2540 * Process an OSC sequence: set window title or icon name.
2542 static void do_osc(Terminal
*term
)
2545 while (term
->osc_strlen
--)
2546 term
->wordness
[(unsigned char)
2547 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
2549 term
->osc_string
[term
->osc_strlen
] = '\0';
2550 switch (term
->esc_args
[0]) {
2553 if (!term
->no_remote_wintitle
)
2554 set_icon(term
->frontend
, term
->osc_string
);
2555 if (term
->esc_args
[0] == 1)
2557 /* fall through: parameter 0 means set both */
2560 if (!term
->no_remote_wintitle
)
2561 set_title(term
->frontend
, term
->osc_string
);
2568 * ANSI printing routines.
2570 static void term_print_setup(Terminal
*term
, char *printer
)
2572 bufchain_clear(&term
->printer_buf
);
2573 term
->print_job
= printer_start_job(printer
);
2575 static void term_print_flush(Terminal
*term
)
2580 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
2581 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2584 printer_job_data(term
->print_job
, data
, len
);
2585 bufchain_consume(&term
->printer_buf
, len
);
2588 static void term_print_finish(Terminal
*term
)
2594 if (!term
->printing
&& !term
->only_printing
)
2595 return; /* we need do nothing */
2597 term_print_flush(term
);
2598 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
2599 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2601 if (c
== '\033' || c
== '\233') {
2602 bufchain_consume(&term
->printer_buf
, size
);
2605 printer_job_data(term
->print_job
, &c
, 1);
2606 bufchain_consume(&term
->printer_buf
, 1);
2609 printer_finish_job(term
->print_job
);
2610 term
->print_job
= NULL
;
2611 term
->printing
= term
->only_printing
= FALSE
;
2615 * Remove everything currently in `inbuf' and stick it up on the
2616 * in-memory display. There's a big state machine in here to
2617 * process escape sequences...
2619 static void term_out(Terminal
*term
)
2623 unsigned char localbuf
[256], *chars
;
2628 chars
= NULL
; /* placate compiler warnings */
2629 while (nchars
> 0 || unget
!= -1 || bufchain_size(&term
->inbuf
) > 0) {
2633 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
2634 if (nchars
> sizeof(localbuf
))
2635 nchars
= sizeof(localbuf
);
2636 memcpy(localbuf
, ret
, nchars
);
2637 bufchain_consume(&term
->inbuf
, nchars
);
2639 assert(chars
!= NULL
);
2645 * Optionally log the session traffic to a file. Useful for
2646 * debugging and possibly also useful for actual logging.
2648 if (term
->logtype
== LGTYP_DEBUG
&& term
->logctx
)
2649 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
2655 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2656 * be able to display 8-bit characters, but I'll let that go 'cause
2661 * If we're printing, add the character to the printer
2664 if (term
->printing
) {
2665 bufchain_add(&term
->printer_buf
, &c
, 1);
2668 * If we're in print-only mode, we use a much simpler
2669 * state machine designed only to recognise the ESC[4i
2670 * termination sequence.
2672 if (term
->only_printing
) {
2674 term
->print_state
= 1;
2675 else if (c
== (unsigned char)'\233')
2676 term
->print_state
= 2;
2677 else if (c
== '[' && term
->print_state
== 1)
2678 term
->print_state
= 2;
2679 else if (c
== '4' && term
->print_state
== 2)
2680 term
->print_state
= 3;
2681 else if (c
== 'i' && term
->print_state
== 3)
2682 term
->print_state
= 4;
2684 term
->print_state
= 0;
2685 if (term
->print_state
== 4) {
2686 term_print_finish(term
);
2692 /* First see about all those translations. */
2693 if (term
->termstate
== TOPLEVEL
) {
2695 switch (term
->utf_state
) {
2698 /* UTF-8 must be stateless so we ignore iso2022. */
2699 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2700 c
= term
->ucsdata
->unitab_ctrl
[c
];
2701 else c
= ((unsigned char)c
) | CSET_ASCII
;
2703 } else if ((c
& 0xe0) == 0xc0) {
2704 term
->utf_size
= term
->utf_state
= 1;
2705 term
->utf_char
= (c
& 0x1f);
2706 } else if ((c
& 0xf0) == 0xe0) {
2707 term
->utf_size
= term
->utf_state
= 2;
2708 term
->utf_char
= (c
& 0x0f);
2709 } else if ((c
& 0xf8) == 0xf0) {
2710 term
->utf_size
= term
->utf_state
= 3;
2711 term
->utf_char
= (c
& 0x07);
2712 } else if ((c
& 0xfc) == 0xf8) {
2713 term
->utf_size
= term
->utf_state
= 4;
2714 term
->utf_char
= (c
& 0x03);
2715 } else if ((c
& 0xfe) == 0xfc) {
2716 term
->utf_size
= term
->utf_state
= 5;
2717 term
->utf_char
= (c
& 0x01);
2728 if ((c
& 0xC0) != 0x80) {
2731 term
->utf_state
= 0;
2734 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2735 if (--term
->utf_state
)
2740 /* Is somebody trying to be evil! */
2742 (c
< 0x800 && term
->utf_size
>= 2) ||
2743 (c
< 0x10000 && term
->utf_size
>= 3) ||
2744 (c
< 0x200000 && term
->utf_size
>= 4) ||
2745 (c
< 0x4000000 && term
->utf_size
>= 5))
2748 /* Unicode line separator and paragraph separator are CR-LF */
2749 if (c
== 0x2028 || c
== 0x2029)
2752 /* High controls are probably a Baaad idea too. */
2756 /* The UTF-16 surrogates are not nice either. */
2757 /* The standard give the option of decoding these:
2758 * I don't want to! */
2759 if (c
>= 0xD800 && c
< 0xE000)
2762 /* ISO 10646 characters now limited to UTF-16 range. */
2766 /* This is currently a TagPhobic application.. */
2767 if (c
>= 0xE0000 && c
<= 0xE007F)
2770 /* U+FEFF is best seen as a null. */
2773 /* But U+FFFE is an error. */
2774 if (c
== 0xFFFE || c
== 0xFFFF)
2779 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2780 else if(term
->sco_acs
&&
2781 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2783 if (term
->sco_acs
== 2) c
|= 0x80;
2786 switch (term
->cset_attr
[term
->cset
]) {
2788 * Linedraw characters are different from 'ESC ( B'
2789 * only for a small range. For ones outside that
2790 * range, make sure we use the same font as well as
2791 * the same encoding.
2794 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2795 c
= term
->ucsdata
->unitab_ctrl
[c
];
2797 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2801 /* If UK-ASCII, make the '#' a LineDraw Pound */
2803 c
= '}' | CSET_LINEDRW
;
2806 /*FALLTHROUGH*/ case CSET_ASCII
:
2807 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2808 c
= term
->ucsdata
->unitab_ctrl
[c
];
2810 c
= ((unsigned char) c
) | CSET_ASCII
;
2813 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2820 * How about C1 controls?
2821 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2823 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2824 !term
->vt52_mode
&& has_compat(VT220
)) {
2828 term
->termstate
= SEEN_ESC
;
2829 term
->esc_query
= FALSE
;
2830 c
= '@' + (c
& 0x1F);
2834 /* Or the GL control. */
2835 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2836 if (term
->curs
.x
&& !term
->wrapnext
)
2838 term
->wrapnext
= FALSE
;
2839 /* destructive backspace might be disabled */
2840 if (!term
->no_dbackspace
) {
2841 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2842 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2843 copy_termchar(scrlineptr(term
->curs
.y
),
2844 term
->curs
.x
, &term
->erase_char
);
2847 /* Or normal C0 controls. */
2848 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2850 case '\005': /* ENQ: terminal type query */
2852 * Strictly speaking this is VT100 but a VT100 defaults to
2853 * no response. Other terminals respond at their option.
2855 * Don't put a CR in the default string as this tends to
2856 * upset some weird software.
2858 compatibility(ANSIMIN
);
2860 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2861 term
->answerback
, term
->answerbacklen
, 0);
2864 case '\007': /* BEL: Bell */
2866 struct beeptime
*newbeep
;
2867 unsigned long ticks
;
2869 ticks
= GETTICKCOUNT();
2871 if (!term
->beep_overloaded
) {
2872 newbeep
= snew(struct beeptime
);
2873 newbeep
->ticks
= ticks
;
2874 newbeep
->next
= NULL
;
2875 if (!term
->beephead
)
2876 term
->beephead
= newbeep
;
2878 term
->beeptail
->next
= newbeep
;
2879 term
->beeptail
= newbeep
;
2884 * Throw out any beeps that happened more than
2887 while (term
->beephead
&&
2888 term
->beephead
->ticks
< ticks
- term
->bellovl_t
) {
2889 struct beeptime
*tmp
= term
->beephead
;
2890 term
->beephead
= tmp
->next
;
2892 if (!term
->beephead
)
2893 term
->beeptail
= NULL
;
2897 if (term
->bellovl
&& term
->beep_overloaded
&&
2898 ticks
- term
->lastbeep
>= (unsigned)term
->bellovl_s
) {
2900 * If we're currently overloaded and the
2901 * last beep was more than s seconds ago,
2902 * leave overload mode.
2904 term
->beep_overloaded
= FALSE
;
2905 } else if (term
->bellovl
&& !term
->beep_overloaded
&&
2906 term
->nbeeps
>= term
->bellovl_n
) {
2908 * Now, if we have n or more beeps
2909 * remaining in the queue, go into overload
2912 term
->beep_overloaded
= TRUE
;
2914 term
->lastbeep
= ticks
;
2917 * Perform an actual beep if we're not overloaded.
2919 if (!term
->bellovl
|| !term
->beep_overloaded
) {
2920 do_beep(term
->frontend
, term
->beep
);
2922 if (term
->beep
== BELL_VISUAL
) {
2923 term_schedule_vbell(term
, FALSE
, 0);
2926 seen_disp_event(term
);
2929 case '\b': /* BS: Back space */
2930 if (term
->curs
.x
== 0 &&
2931 (term
->curs
.y
== 0 || term
->wrap
== 0))
2933 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2934 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2935 else if (term
->wrapnext
)
2936 term
->wrapnext
= FALSE
;
2939 seen_disp_event(term
);
2941 case '\016': /* LS1: Locking-shift one */
2942 compatibility(VT100
);
2945 case '\017': /* LS0: Locking-shift zero */
2946 compatibility(VT100
);
2949 case '\033': /* ESC: Escape */
2950 if (term
->vt52_mode
)
2951 term
->termstate
= VT52_ESC
;
2953 compatibility(ANSIMIN
);
2954 term
->termstate
= SEEN_ESC
;
2955 term
->esc_query
= FALSE
;
2958 case '\015': /* CR: Carriage return */
2960 term
->wrapnext
= FALSE
;
2961 seen_disp_event(term
);
2962 term
->paste_hold
= 0;
2964 if (term
->crhaslf
) {
2965 if (term
->curs
.y
== term
->marg_b
)
2966 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2967 else if (term
->curs
.y
< term
->rows
- 1)
2971 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2973 case '\014': /* FF: Form feed */
2974 if (has_compat(SCOANSI
)) {
2975 move(term
, 0, 0, 0);
2976 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2978 term
->wrapnext
= FALSE
;
2979 seen_disp_event(term
);
2982 case '\013': /* VT: Line tabulation */
2983 compatibility(VT100
);
2984 case '\012': /* LF: Line feed */
2985 if (term
->curs
.y
== term
->marg_b
)
2986 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2987 else if (term
->curs
.y
< term
->rows
- 1)
2991 term
->wrapnext
= FALSE
;
2992 seen_disp_event(term
);
2993 term
->paste_hold
= 0;
2995 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2997 case '\t': /* HT: Character tabulation */
2999 pos old_curs
= term
->curs
;
3000 termline
*ldata
= scrlineptr(term
->curs
.y
);
3004 } while (term
->curs
.x
< term
->cols
- 1 &&
3005 !term
->tabs
[term
->curs
.x
]);
3007 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
3008 if (term
->curs
.x
>= term
->cols
/ 2)
3009 term
->curs
.x
= term
->cols
/ 2 - 1;
3011 if (term
->curs
.x
>= term
->cols
)
3012 term
->curs
.x
= term
->cols
- 1;
3015 check_selection(term
, old_curs
, term
->curs
);
3017 seen_disp_event(term
);
3021 switch (term
->termstate
) {
3023 /* Only graphic characters get this far;
3024 * ctrls are stripped above */
3026 termline
*cline
= scrlineptr(term
->curs
.y
);
3031 width
= (term
->cjk_ambig_wide ?
3032 mk_wcwidth_cjk((unsigned int) c
) :
3033 mk_wcwidth((unsigned int) c
));
3035 if (term
->wrapnext
&& term
->wrap
&& width
> 0) {
3036 cline
->lattr
|= LATTR_WRAPPED
;
3037 if (term
->curs
.y
== term
->marg_b
)
3038 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3039 else if (term
->curs
.y
< term
->rows
- 1)
3042 term
->wrapnext
= FALSE
;
3043 cline
= scrlineptr(term
->curs
.y
);
3045 if (term
->insert
&& width
> 0)
3047 if (term
->selstate
!= NO_SELECTION
) {
3048 pos cursplus
= term
->curs
;
3050 check_selection(term
, term
->curs
, cursplus
);
3052 if (((c
& CSET_MASK
) == CSET_ASCII
||
3053 (c
& CSET_MASK
) == 0) &&
3055 logtraffic(term
->logctx
, (unsigned char) c
,
3061 * If we're about to display a double-width
3062 * character starting in the rightmost
3063 * column, then we do something special
3064 * instead. We must print a space in the
3065 * last column of the screen, then wrap;
3066 * and we also set LATTR_WRAPPED2 which
3067 * instructs subsequent cut-and-pasting not
3068 * only to splice this line to the one
3069 * after it, but to ignore the space in the
3070 * last character position as well.
3071 * (Because what was actually output to the
3072 * terminal was presumably just a sequence
3073 * of CJK characters, and we don't want a
3074 * space to be pasted in the middle of
3075 * those just because they had the
3076 * misfortune to start in the wrong parity
3077 * column. xterm concurs.)
3079 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3080 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
3081 if (term
->curs
.x
== term
->cols
-1) {
3082 copy_termchar(cline
, term
->curs
.x
,
3084 cline
->lattr
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
3085 if (term
->curs
.y
== term
->marg_b
)
3086 scroll(term
, term
->marg_t
, term
->marg_b
,
3088 else if (term
->curs
.y
< term
->rows
- 1)
3091 cline
= scrlineptr(term
->curs
.y
);
3092 /* Now we must check_boundary again, of course. */
3093 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3094 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
3098 clear_cc(cline
, term
->curs
.x
);
3099 cline
->chars
[term
->curs
.x
].chr
= c
;
3100 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
3105 clear_cc(cline
, term
->curs
.x
);
3106 cline
->chars
[term
->curs
.x
].chr
= UCSWIDE
;
3107 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
3111 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3112 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
3115 clear_cc(cline
, term
->curs
.x
);
3116 cline
->chars
[term
->curs
.x
].chr
= c
;
3117 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
3121 if (term
->curs
.x
> 0) {
3122 int x
= term
->curs
.x
- 1;
3124 /* If we're in wrapnext state, the character
3125 * to combine with is _here_, not to our left. */
3130 * If the previous character is
3131 * UCSWIDE, back up another one.
3133 if (cline
->chars
[x
].chr
== UCSWIDE
) {
3138 add_cc(cline
, x
, c
);
3139 seen_disp_event(term
);
3146 if (term
->curs
.x
== term
->cols
) {
3148 term
->wrapnext
= TRUE
;
3149 if (term
->wrap
&& term
->vt52_mode
) {
3150 cline
->lattr
|= LATTR_WRAPPED
;
3151 if (term
->curs
.y
== term
->marg_b
)
3152 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3153 else if (term
->curs
.y
< term
->rows
- 1)
3156 term
->wrapnext
= FALSE
;
3159 seen_disp_event(term
);
3165 * This state is virtually identical to SEEN_ESC, with the
3166 * exception that we have an OSC sequence in the pipeline,
3167 * and _if_ we see a backslash, we process it.
3171 term
->termstate
= TOPLEVEL
;
3174 /* else fall through */
3176 if (c
>= ' ' && c
<= '/') {
3177 if (term
->esc_query
)
3178 term
->esc_query
= -1;
3180 term
->esc_query
= c
;
3183 term
->termstate
= TOPLEVEL
;
3184 switch (ANSI(c
, term
->esc_query
)) {
3185 case '[': /* enter CSI mode */
3186 term
->termstate
= SEEN_CSI
;
3187 term
->esc_nargs
= 1;
3188 term
->esc_args
[0] = ARG_DEFAULT
;
3189 term
->esc_query
= FALSE
;
3191 case ']': /* OSC: xterm escape sequences */
3192 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3193 compatibility(OTHER
);
3194 term
->termstate
= SEEN_OSC
;
3195 term
->esc_args
[0] = 0;
3197 case '7': /* DECSC: save cursor */
3198 compatibility(VT100
);
3199 save_cursor(term
, TRUE
);
3201 case '8': /* DECRC: restore cursor */
3202 compatibility(VT100
);
3203 save_cursor(term
, FALSE
);
3204 seen_disp_event(term
);
3206 case '=': /* DECKPAM: Keypad application mode */
3207 compatibility(VT100
);
3208 term
->app_keypad_keys
= TRUE
;
3210 case '>': /* DECKPNM: Keypad numeric mode */
3211 compatibility(VT100
);
3212 term
->app_keypad_keys
= FALSE
;
3214 case 'D': /* IND: exactly equivalent to LF */
3215 compatibility(VT100
);
3216 if (term
->curs
.y
== term
->marg_b
)
3217 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3218 else if (term
->curs
.y
< term
->rows
- 1)
3220 term
->wrapnext
= FALSE
;
3221 seen_disp_event(term
);
3223 case 'E': /* NEL: exactly equivalent to CR-LF */
3224 compatibility(VT100
);
3226 if (term
->curs
.y
== term
->marg_b
)
3227 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3228 else if (term
->curs
.y
< term
->rows
- 1)
3230 term
->wrapnext
= FALSE
;
3231 seen_disp_event(term
);
3233 case 'M': /* RI: reverse index - backwards LF */
3234 compatibility(VT100
);
3235 if (term
->curs
.y
== term
->marg_t
)
3236 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
3237 else if (term
->curs
.y
> 0)
3239 term
->wrapnext
= FALSE
;
3240 seen_disp_event(term
);
3242 case 'Z': /* DECID: terminal type query */
3243 compatibility(VT100
);
3245 ldisc_send(term
->ldisc
, term
->id_string
,
3246 strlen(term
->id_string
), 0);
3248 case 'c': /* RIS: restore power-on settings */
3249 compatibility(VT100
);
3250 power_on(term
, TRUE
);
3251 if (term
->ldisc
) /* cause ldisc to notice changes */
3252 ldisc_send(term
->ldisc
, NULL
, 0, 0);
3253 if (term
->reset_132
) {
3254 if (!term
->no_remote_resize
)
3255 request_resize(term
->frontend
, 80, term
->rows
);
3256 term
->reset_132
= 0;
3259 seen_disp_event(term
);
3261 case 'H': /* HTS: set a tab */
3262 compatibility(VT100
);
3263 term
->tabs
[term
->curs
.x
] = TRUE
;
3266 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3267 compatibility(VT100
);
3273 for (i
= 0; i
< term
->rows
; i
++) {
3274 ldata
= scrlineptr(i
);
3275 for (j
= 0; j
< term
->cols
; j
++) {
3276 copy_termchar(ldata
, j
,
3277 &term
->basic_erase_char
);
3278 ldata
->chars
[j
].chr
= 'E';
3280 ldata
->lattr
= LATTR_NORM
;
3283 seen_disp_event(term
);
3284 scrtop
.x
= scrtop
.y
= 0;
3286 scrbot
.y
= term
->rows
;
3287 check_selection(term
, scrtop
, scrbot
);
3291 case ANSI('3', '#'):
3292 case ANSI('4', '#'):
3293 case ANSI('5', '#'):
3294 case ANSI('6', '#'):
3295 compatibility(VT100
);
3299 switch (ANSI(c
, term
->esc_query
)) {
3300 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3303 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3306 case ANSI('5', '#'): /* DECSWL: normal */
3307 nlattr
= LATTR_NORM
;
3309 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3310 nlattr
= LATTR_WIDE
;
3313 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
3316 /* GZD4: G0 designate 94-set */
3317 case ANSI('A', '('):
3318 compatibility(VT100
);
3319 if (!term
->no_remote_charset
)
3320 term
->cset_attr
[0] = CSET_GBCHR
;
3322 case ANSI('B', '('):
3323 compatibility(VT100
);
3324 if (!term
->no_remote_charset
)
3325 term
->cset_attr
[0] = CSET_ASCII
;
3327 case ANSI('0', '('):
3328 compatibility(VT100
);
3329 if (!term
->no_remote_charset
)
3330 term
->cset_attr
[0] = CSET_LINEDRW
;
3332 case ANSI('U', '('):
3333 compatibility(OTHER
);
3334 if (!term
->no_remote_charset
)
3335 term
->cset_attr
[0] = CSET_SCOACS
;
3337 /* G1D4: G1-designate 94-set */
3338 case ANSI('A', ')'):
3339 compatibility(VT100
);
3340 if (!term
->no_remote_charset
)
3341 term
->cset_attr
[1] = CSET_GBCHR
;
3343 case ANSI('B', ')'):
3344 compatibility(VT100
);
3345 if (!term
->no_remote_charset
)
3346 term
->cset_attr
[1] = CSET_ASCII
;
3348 case ANSI('0', ')'):
3349 compatibility(VT100
);
3350 if (!term
->no_remote_charset
)
3351 term
->cset_attr
[1] = CSET_LINEDRW
;
3353 case ANSI('U', ')'):
3354 compatibility(OTHER
);
3355 if (!term
->no_remote_charset
)
3356 term
->cset_attr
[1] = CSET_SCOACS
;
3358 /* DOCS: Designate other coding system */
3359 case ANSI('8', '%'): /* Old Linux code */
3360 case ANSI('G', '%'):
3361 compatibility(OTHER
);
3362 if (!term
->no_remote_charset
)
3365 case ANSI('@', '%'):
3366 compatibility(OTHER
);
3367 if (!term
->no_remote_charset
)
3373 term
->termstate
= TOPLEVEL
; /* default */
3375 if (term
->esc_nargs
<= ARGS_MAX
) {
3376 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
3377 term
->esc_args
[term
->esc_nargs
- 1] = 0;
3378 term
->esc_args
[term
->esc_nargs
- 1] =
3379 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
3381 term
->termstate
= SEEN_CSI
;
3382 } else if (c
== ';') {
3383 if (term
->esc_nargs
< ARGS_MAX
)
3384 term
->esc_args
[term
->esc_nargs
++] = ARG_DEFAULT
;
3385 term
->termstate
= SEEN_CSI
;
3386 } else if (c
< '@') {
3387 if (term
->esc_query
)
3388 term
->esc_query
= -1;
3390 term
->esc_query
= TRUE
;
3392 term
->esc_query
= c
;
3393 term
->termstate
= SEEN_CSI
;
3395 switch (ANSI(c
, term
->esc_query
)) {
3396 case 'A': /* CUU: move up N lines */
3397 move(term
, term
->curs
.x
,
3398 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3399 seen_disp_event(term
);
3401 case 'e': /* VPR: move down N lines */
3402 compatibility(ANSI
);
3404 case 'B': /* CUD: Cursor down */
3405 move(term
, term
->curs
.x
,
3406 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3407 seen_disp_event(term
);
3409 case ANSI('c', '>'): /* DA: report xterm version */
3410 compatibility(OTHER
);
3411 /* this reports xterm version 136 so that VIM can
3412 use the drag messages from the mouse reporting */
3414 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
3416 case 'a': /* HPR: move right N cols */
3417 compatibility(ANSI
);
3419 case 'C': /* CUF: Cursor right */
3420 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
3422 seen_disp_event(term
);
3424 case 'D': /* CUB: move left N cols */
3425 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
3427 seen_disp_event(term
);
3429 case 'E': /* CNL: move down N lines and CR */
3430 compatibility(ANSI
);
3432 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3433 seen_disp_event(term
);
3435 case 'F': /* CPL: move up N lines and CR */
3436 compatibility(ANSI
);
3438 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3439 seen_disp_event(term
);
3442 case '`': /* HPA: set horizontal posn */
3443 compatibility(ANSI
);
3444 move(term
, def(term
->esc_args
[0], 1) - 1,
3446 seen_disp_event(term
);
3448 case 'd': /* VPA: set vertical posn */
3449 compatibility(ANSI
);
3450 move(term
, term
->curs
.x
,
3451 ((term
->dec_om ? term
->marg_t
: 0) +
3452 def(term
->esc_args
[0], 1) - 1),
3453 (term
->dec_om ?
2 : 0));
3454 seen_disp_event(term
);
3457 case 'f': /* HVP: set horz and vert posns at once */
3458 if (term
->esc_nargs
< 2)
3459 term
->esc_args
[1] = ARG_DEFAULT
;
3460 move(term
, def(term
->esc_args
[1], 1) - 1,
3461 ((term
->dec_om ? term
->marg_t
: 0) +
3462 def(term
->esc_args
[0], 1) - 1),
3463 (term
->dec_om ?
2 : 0));
3464 seen_disp_event(term
);
3466 case 'J': /* ED: erase screen or parts of it */
3468 unsigned int i
= def(term
->esc_args
[0], 0);
3470 /* Erase Saved Lines (xterm)
3471 * This follows Thomas Dickey's xterm. */
3477 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
3481 seen_disp_event(term
);
3483 case 'K': /* EL: erase line or parts of it */
3485 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3488 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
3490 seen_disp_event(term
);
3492 case 'L': /* IL: insert lines */
3493 compatibility(VT102
);
3494 if (term
->curs
.y
<= term
->marg_b
)
3495 scroll(term
, term
->curs
.y
, term
->marg_b
,
3496 -def(term
->esc_args
[0], 1), FALSE
);
3497 seen_disp_event(term
);
3499 case 'M': /* DL: delete lines */
3500 compatibility(VT102
);
3501 if (term
->curs
.y
<= term
->marg_b
)
3502 scroll(term
, term
->curs
.y
, term
->marg_b
,
3503 def(term
->esc_args
[0], 1),
3505 seen_disp_event(term
);
3507 case '@': /* ICH: insert chars */
3508 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3509 compatibility(VT102
);
3510 insch(term
, def(term
->esc_args
[0], 1));
3511 seen_disp_event(term
);
3513 case 'P': /* DCH: delete chars */
3514 compatibility(VT102
);
3515 insch(term
, -def(term
->esc_args
[0], 1));
3516 seen_disp_event(term
);
3518 case 'c': /* DA: terminal type query */
3519 compatibility(VT100
);
3520 /* This is the response for a VT102 */
3522 ldisc_send(term
->ldisc
, term
->id_string
,
3523 strlen(term
->id_string
), 0);
3525 case 'n': /* DSR: cursor position query */
3527 if (term
->esc_args
[0] == 6) {
3529 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
3531 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
3532 } else if (term
->esc_args
[0] == 5) {
3533 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
3537 case 'h': /* SM: toggle modes to high */
3539 compatibility(VT100
);
3542 for (i
= 0; i
< term
->esc_nargs
; i
++)
3543 toggle_mode(term
, term
->esc_args
[i
],
3544 term
->esc_query
, TRUE
);
3547 case 'i': /* MC: Media copy */
3549 compatibility(VT100
);
3552 if (term
->esc_nargs
!= 1) break;
3553 if (term
->esc_args
[0] == 5 &&
3554 (printer
= conf_get_str(term
->conf
,
3555 CONF_printer
))[0]) {
3556 term
->printing
= TRUE
;
3557 term
->only_printing
= !term
->esc_query
;
3558 term
->print_state
= 0;
3559 term_print_setup(term
, printer
);
3560 } else if (term
->esc_args
[0] == 4 &&
3562 term_print_finish(term
);
3566 case 'l': /* RM: toggle modes to low */
3568 compatibility(VT100
);
3571 for (i
= 0; i
< term
->esc_nargs
; i
++)
3572 toggle_mode(term
, term
->esc_args
[i
],
3573 term
->esc_query
, FALSE
);
3576 case 'g': /* TBC: clear tabs */
3577 compatibility(VT100
);
3578 if (term
->esc_nargs
== 1) {
3579 if (term
->esc_args
[0] == 0) {
3580 term
->tabs
[term
->curs
.x
] = FALSE
;
3581 } else if (term
->esc_args
[0] == 3) {
3583 for (i
= 0; i
< term
->cols
; i
++)
3584 term
->tabs
[i
] = FALSE
;
3588 case 'r': /* DECSTBM: set scroll margins */
3589 compatibility(VT100
);
3590 if (term
->esc_nargs
<= 2) {
3592 top
= def(term
->esc_args
[0], 1) - 1;
3593 bot
= (term
->esc_nargs
<= 1
3594 || term
->esc_args
[1] == 0 ?
3596 def(term
->esc_args
[1], term
->rows
)) - 1;
3597 if (bot
>= term
->rows
)
3598 bot
= term
->rows
- 1;
3599 /* VTTEST Bug 9 - if region is less than 2 lines
3600 * don't change region.
3602 if (bot
- top
> 0) {
3607 * I used to think the cursor should be
3608 * placed at the top of the newly marginned
3609 * area. Apparently not: VMS TPU falls over
3612 * Well actually it should for
3615 term
->curs
.y
= (term
->dec_om ?
3617 seen_disp_event(term
);
3621 case 'm': /* SGR: set graphics rendition */
3624 * A VT100 without the AVO only had one
3625 * attribute, either underline or
3626 * reverse video depending on the
3627 * cursor type, this was selected by
3631 * This is sometimes DIM, eg on the
3634 * This is sometimes INVIS various ANSI.
3636 * This like 22 disables BOLD, DIM and INVIS
3638 * The ANSI colours appear on any
3639 * terminal that has colour (obviously)
3640 * but the interaction between sgr0 and
3641 * the colours varies but is usually
3642 * related to the background colour
3643 * erase item. The interaction between
3644 * colour attributes and the mono ones
3645 * is also very implementation
3648 * The 39 and 49 attributes are likely
3649 * to be unimplemented.
3652 for (i
= 0; i
< term
->esc_nargs
; i
++) {
3653 switch (def(term
->esc_args
[i
], 0)) {
3654 case 0: /* restore defaults */
3655 term
->curr_attr
= term
->default_attr
;
3657 case 1: /* enable bold */
3658 compatibility(VT100AVO
);
3659 term
->curr_attr
|= ATTR_BOLD
;
3661 case 21: /* (enable double underline) */
3662 compatibility(OTHER
);
3663 case 4: /* enable underline */
3664 compatibility(VT100AVO
);
3665 term
->curr_attr
|= ATTR_UNDER
;
3667 case 5: /* enable blink */
3668 compatibility(VT100AVO
);
3669 term
->curr_attr
|= ATTR_BLINK
;
3671 case 6: /* SCO light bkgrd */
3672 compatibility(SCOANSI
);
3673 term
->blink_is_real
= FALSE
;
3674 term
->curr_attr
|= ATTR_BLINK
;
3675 term_schedule_tblink(term
);
3677 case 7: /* enable reverse video */
3678 term
->curr_attr
|= ATTR_REVERSE
;
3680 case 10: /* SCO acs off */
3681 compatibility(SCOANSI
);
3682 if (term
->no_remote_charset
) break;
3683 term
->sco_acs
= 0; break;
3684 case 11: /* SCO acs on */
3685 compatibility(SCOANSI
);
3686 if (term
->no_remote_charset
) break;
3687 term
->sco_acs
= 1; break;
3688 case 12: /* SCO acs on, |0x80 */
3689 compatibility(SCOANSI
);
3690 if (term
->no_remote_charset
) break;
3691 term
->sco_acs
= 2; break;
3692 case 22: /* disable bold */
3693 compatibility2(OTHER
, VT220
);
3694 term
->curr_attr
&= ~ATTR_BOLD
;
3696 case 24: /* disable underline */
3697 compatibility2(OTHER
, VT220
);
3698 term
->curr_attr
&= ~ATTR_UNDER
;
3700 case 25: /* disable blink */
3701 compatibility2(OTHER
, VT220
);
3702 term
->curr_attr
&= ~ATTR_BLINK
;
3704 case 27: /* disable reverse video */
3705 compatibility2(OTHER
, VT220
);
3706 term
->curr_attr
&= ~ATTR_REVERSE
;
3717 term
->curr_attr
&= ~ATTR_FGMASK
;
3719 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3729 /* aixterm-style bright foreground */
3730 term
->curr_attr
&= ~ATTR_FGMASK
;
3732 ((term
->esc_args
[i
] - 90 + 8)
3735 case 39: /* default-foreground */
3736 term
->curr_attr
&= ~ATTR_FGMASK
;
3737 term
->curr_attr
|= ATTR_DEFFG
;
3748 term
->curr_attr
&= ~ATTR_BGMASK
;
3750 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3760 /* aixterm-style bright background */
3761 term
->curr_attr
&= ~ATTR_BGMASK
;
3763 ((term
->esc_args
[i
] - 100 + 8)
3766 case 49: /* default-background */
3767 term
->curr_attr
&= ~ATTR_BGMASK
;
3768 term
->curr_attr
|= ATTR_DEFBG
;
3770 case 38: /* xterm 256-colour mode */
3771 if (i
+2 < term
->esc_nargs
&&
3772 term
->esc_args
[i
+1] == 5) {
3773 term
->curr_attr
&= ~ATTR_FGMASK
;
3775 ((term
->esc_args
[i
+2] & 0xFF)
3780 case 48: /* xterm 256-colour mode */
3781 if (i
+2 < term
->esc_nargs
&&
3782 term
->esc_args
[i
+1] == 5) {
3783 term
->curr_attr
&= ~ATTR_BGMASK
;
3785 ((term
->esc_args
[i
+2] & 0xFF)
3792 set_erase_char(term
);
3795 case 's': /* save cursor */
3796 save_cursor(term
, TRUE
);
3798 case 'u': /* restore cursor */
3799 save_cursor(term
, FALSE
);
3800 seen_disp_event(term
);
3802 case 't': /* DECSLPP: set page size - ie window height */
3804 * VT340/VT420 sequence DECSLPP, DEC only allows values
3805 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3806 * illegal values (eg first arg 1..9) for window changing
3809 if (term
->esc_nargs
<= 1
3810 && (term
->esc_args
[0] < 1 ||
3811 term
->esc_args
[0] >= 24)) {
3812 compatibility(VT340TEXT
);
3813 if (!term
->no_remote_resize
)
3814 request_resize(term
->frontend
, term
->cols
,
3815 def(term
->esc_args
[0], 24));
3817 } else if (term
->esc_nargs
>= 1 &&
3818 term
->esc_args
[0] >= 1 &&
3819 term
->esc_args
[0] < 24) {
3820 compatibility(OTHER
);
3822 switch (term
->esc_args
[0]) {
3826 set_iconic(term
->frontend
, FALSE
);
3829 set_iconic(term
->frontend
, TRUE
);
3832 if (term
->esc_nargs
>= 3) {
3833 if (!term
->no_remote_resize
)
3834 move_window(term
->frontend
,
3835 def(term
->esc_args
[1], 0),
3836 def(term
->esc_args
[2], 0));
3840 /* We should resize the window to a given
3841 * size in pixels here, but currently our
3842 * resizing code isn't healthy enough to
3847 set_zorder(term
->frontend
, TRUE
);
3850 /* move to bottom */
3851 set_zorder(term
->frontend
, FALSE
);
3854 refresh_window(term
->frontend
);
3857 if (term
->esc_nargs
>= 3) {
3858 if (!term
->no_remote_resize
)
3859 request_resize(term
->frontend
,
3860 def(term
->esc_args
[2], term
->conf_width
),
3861 def(term
->esc_args
[1], term
->conf_height
));
3865 if (term
->esc_nargs
>= 2)
3866 set_zoomed(term
->frontend
,
3872 ldisc_send(term
->ldisc
,
3873 is_iconic(term
->frontend
) ?
3874 "\033[2t" : "\033[1t", 4, 0);
3878 get_window_pos(term
->frontend
, &x
, &y
);
3879 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3880 ldisc_send(term
->ldisc
, buf
, len
, 0);
3885 get_window_pixels(term
->frontend
, &x
, &y
);
3886 len
= sprintf(buf
, "\033[4;%d;%dt", y
, x
);
3887 ldisc_send(term
->ldisc
, buf
, len
, 0);
3892 len
= sprintf(buf
, "\033[8;%d;%dt",
3893 term
->rows
, term
->cols
);
3894 ldisc_send(term
->ldisc
, buf
, len
, 0);
3899 * Hmmm. Strictly speaking we
3900 * should return `the size of the
3901 * screen in characters', but
3902 * that's not easy: (a) window
3903 * furniture being what it is it's
3904 * hard to compute, and (b) in
3905 * resize-font mode maximising the
3906 * window wouldn't change the
3907 * number of characters. *shrug*. I
3908 * think we'll ignore it for the
3909 * moment and see if anyone
3910 * complains, and then ask them
3911 * what they would like it to do.
3916 term
->remote_qtitle_action
!= TITLE_NONE
) {
3917 if(term
->remote_qtitle_action
== TITLE_REAL
)
3918 p
= get_window_title(term
->frontend
, TRUE
);
3920 p
= EMPTY_WINDOW_TITLE
;
3922 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3923 ldisc_send(term
->ldisc
, p
, len
, 0);
3924 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3929 term
->remote_qtitle_action
!= TITLE_NONE
) {
3930 if(term
->remote_qtitle_action
== TITLE_REAL
)
3931 p
= get_window_title(term
->frontend
, FALSE
);
3933 p
= EMPTY_WINDOW_TITLE
;
3935 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3936 ldisc_send(term
->ldisc
, p
, len
, 0);
3937 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3943 case 'S': /* SU: Scroll up */
3944 compatibility(SCOANSI
);
3945 scroll(term
, term
->marg_t
, term
->marg_b
,
3946 def(term
->esc_args
[0], 1), TRUE
);
3947 term
->wrapnext
= FALSE
;
3948 seen_disp_event(term
);
3950 case 'T': /* SD: Scroll down */
3951 compatibility(SCOANSI
);
3952 scroll(term
, term
->marg_t
, term
->marg_b
,
3953 -def(term
->esc_args
[0], 1), TRUE
);
3954 term
->wrapnext
= FALSE
;
3955 seen_disp_event(term
);
3957 case ANSI('|', '*'): /* DECSNLS */
3959 * Set number of lines on screen
3960 * VT420 uses VGA like hardware and can
3961 * support any size in reasonable range
3962 * (24..49 AIUI) with no default specified.
3964 compatibility(VT420
);
3965 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3966 if (!term
->no_remote_resize
)
3967 request_resize(term
->frontend
, term
->cols
,
3968 def(term
->esc_args
[0],
3969 term
->conf_height
));
3973 case ANSI('|', '$'): /* DECSCPP */
3975 * Set number of columns per page
3976 * Docs imply range is only 80 or 132, but
3979 compatibility(VT340TEXT
);
3980 if (term
->esc_nargs
<= 1) {
3981 if (!term
->no_remote_resize
)
3982 request_resize(term
->frontend
,
3983 def(term
->esc_args
[0],
3989 case 'X': /* ECH: write N spaces w/o moving cursor */
3990 /* XXX VTTEST says this is vt220, vt510 manual
3992 compatibility(ANSIMIN
);
3994 int n
= def(term
->esc_args
[0], 1);
3996 int p
= term
->curs
.x
;
3997 termline
*cline
= scrlineptr(term
->curs
.y
);
3999 if (n
> term
->cols
- term
->curs
.x
)
4000 n
= term
->cols
- term
->curs
.x
;
4001 cursplus
= term
->curs
;
4003 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
4004 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
4005 check_selection(term
, term
->curs
, cursplus
);
4007 copy_termchar(cline
, p
++,
4009 seen_disp_event(term
);
4012 case 'x': /* DECREQTPARM: report terminal characteristics */
4013 compatibility(VT100
);
4016 int i
= def(term
->esc_args
[0], 0);
4017 if (i
== 0 || i
== 1) {
4018 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
4020 ldisc_send(term
->ldisc
, buf
, 20, 0);
4025 compatibility(OTHER
);
4027 int i
= def(term
->esc_args
[0], 1);
4028 pos old_curs
= term
->curs
;
4030 for(;i
>0 && term
->curs
.x
>0; i
--) {
4033 } while (term
->curs
.x
>0 &&
4034 !term
->tabs
[term
->curs
.x
]);
4036 check_selection(term
, old_curs
, term
->curs
);
4039 case ANSI('c', '='): /* Hide or Show Cursor */
4040 compatibility(SCOANSI
);
4041 switch(term
->esc_args
[0]) {
4042 case 0: /* hide cursor */
4043 term
->cursor_on
= FALSE
;
4045 case 1: /* restore cursor */
4046 term
->big_cursor
= FALSE
;
4047 term
->cursor_on
= TRUE
;
4049 case 2: /* block cursor */
4050 term
->big_cursor
= TRUE
;
4051 term
->cursor_on
= TRUE
;
4055 case ANSI('C', '='):
4057 * set cursor start on scanline esc_args[0] and
4058 * end on scanline esc_args[1].If you set
4059 * the bottom scan line to a value less than
4060 * the top scan line, the cursor will disappear.
4062 compatibility(SCOANSI
);
4063 if (term
->esc_nargs
>= 2) {
4064 if (term
->esc_args
[0] > term
->esc_args
[1])
4065 term
->cursor_on
= FALSE
;
4067 term
->cursor_on
= TRUE
;
4070 case ANSI('D', '='):
4071 compatibility(SCOANSI
);
4072 term
->blink_is_real
= FALSE
;
4073 term_schedule_tblink(term
);
4074 if (term
->esc_args
[0]>=1)
4075 term
->curr_attr
|= ATTR_BLINK
;
4077 term
->curr_attr
&= ~ATTR_BLINK
;
4079 case ANSI('E', '='):
4080 compatibility(SCOANSI
);
4081 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
4082 term_schedule_tblink(term
);
4084 case ANSI('F', '='): /* set normal foreground */
4085 compatibility(SCOANSI
);
4086 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
4088 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
4089 (term
->esc_args
[0] & 0x8)) <<
4091 term
->curr_attr
&= ~ATTR_FGMASK
;
4092 term
->curr_attr
|= colour
;
4093 term
->default_attr
&= ~ATTR_FGMASK
;
4094 term
->default_attr
|= colour
;
4095 set_erase_char(term
);
4098 case ANSI('G', '='): /* set normal background */
4099 compatibility(SCOANSI
);
4100 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
4102 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
4103 (term
->esc_args
[0] & 0x8)) <<
4105 term
->curr_attr
&= ~ATTR_BGMASK
;
4106 term
->curr_attr
|= colour
;
4107 term
->default_attr
&= ~ATTR_BGMASK
;
4108 term
->default_attr
|= colour
;
4109 set_erase_char(term
);
4112 case ANSI('L', '='):
4113 compatibility(SCOANSI
);
4114 term
->use_bce
= (term
->esc_args
[0] <= 0);
4115 set_erase_char(term
);
4117 case ANSI('p', '"'): /* DECSCL: set compat level */
4119 * Allow the host to make this emulator a
4120 * 'perfect' VT102. This first appeared in
4121 * the VT220, but we do need to get back to
4122 * PuTTY mode so I won't check it.
4124 * The arg in 40..42,50 are a PuTTY extension.
4125 * The 2nd arg, 8bit vs 7bit is not checked.
4127 * Setting VT102 mode should also change
4128 * the Fkeys to generate PF* codes as a
4129 * real VT102 has no Fkeys. The VT220 does
4130 * this, F11..F13 become ESC,BS,LF other
4131 * Fkeys send nothing.
4133 * Note ESC c will NOT change this!
4136 switch (term
->esc_args
[0]) {
4138 term
->compatibility_level
&= ~TM_VTXXX
;
4139 term
->compatibility_level
|= TM_VT102
;
4142 term
->compatibility_level
&= ~TM_VTXXX
;
4143 term
->compatibility_level
|= TM_VT220
;
4147 if (term
->esc_args
[0] > 60 &&
4148 term
->esc_args
[0] < 70)
4149 term
->compatibility_level
|= TM_VTXXX
;
4153 term
->compatibility_level
&= TM_VTXXX
;
4156 term
->compatibility_level
= TM_PUTTY
;
4159 term
->compatibility_level
= TM_SCOANSI
;
4163 term
->compatibility_level
= TM_PUTTY
;
4169 /* Change the response to CSI c */
4170 if (term
->esc_args
[0] == 50) {
4173 strcpy(term
->id_string
, "\033[?");
4174 for (i
= 1; i
< term
->esc_nargs
; i
++) {
4176 strcat(term
->id_string
, ";");
4177 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
4178 strcat(term
->id_string
, lbuf
);
4180 strcat(term
->id_string
, "c");
4183 /* Is this a good idea ?
4184 * Well we should do a soft reset at this point ...
4186 if (!has_compat(VT420
) && has_compat(VT100
)) {
4187 if (!term
->no_remote_resize
) {
4188 if (term
->reset_132
)
4189 request_resize(132, 24);
4191 request_resize(80, 24);
4199 term
->osc_w
= FALSE
;
4201 case 'P': /* Linux palette sequence */
4202 term
->termstate
= SEEN_OSC_P
;
4203 term
->osc_strlen
= 0;
4205 case 'R': /* Linux palette reset */
4206 palette_reset(term
->frontend
);
4207 term_invalidate(term
);
4208 term
->termstate
= TOPLEVEL
;
4210 case 'W': /* word-set */
4211 term
->termstate
= SEEN_OSC_W
;
4224 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4228 * Grotty hack to support xterm and DECterm title
4229 * sequences concurrently.
4231 if (term
->esc_args
[0] == 2) {
4232 term
->esc_args
[0] = 1;
4235 /* else fall through */
4237 term
->termstate
= OSC_STRING
;
4238 term
->osc_strlen
= 0;
4243 * This OSC stuff is EVIL. It takes just one character to get into
4244 * sysline mode and it's not initially obvious how to get out.
4245 * So I've added CR and LF as string aborts.
4246 * This shouldn't effect compatibility as I believe embedded
4247 * control characters are supposed to be interpreted (maybe?)
4248 * and they don't display anything useful anyway.
4252 if (c
== '\012' || c
== '\015') {
4253 term
->termstate
= TOPLEVEL
;
4254 } else if (c
== 0234 || c
== '\007') {
4256 * These characters terminate the string; ST and BEL
4257 * terminate the sequence and trigger instant
4258 * processing of it, whereas ESC goes back to SEEN_ESC
4259 * mode unless it is followed by \, in which case it is
4260 * synonymous with ST in the first place.
4263 term
->termstate
= TOPLEVEL
;
4264 } else if (c
== '\033')
4265 term
->termstate
= OSC_MAYBE_ST
;
4266 else if (term
->osc_strlen
< OSC_STR_MAX
)
4267 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
4271 int max
= (term
->osc_strlen
== 0 ?
21 : 15);
4273 if ((int)c
>= '0' && (int)c
<= '9')
4275 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
4277 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
4280 term
->termstate
= TOPLEVEL
;
4283 term
->osc_string
[term
->osc_strlen
++] = val
;
4284 if (term
->osc_strlen
>= 7) {
4285 palette_set(term
->frontend
, term
->osc_string
[0],
4286 term
->osc_string
[1] * 16 + term
->osc_string
[2],
4287 term
->osc_string
[3] * 16 + term
->osc_string
[4],
4288 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
4289 term_invalidate(term
);
4290 term
->termstate
= TOPLEVEL
;
4306 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4309 term
->termstate
= OSC_STRING
;
4310 term
->osc_strlen
= 0;
4314 term
->termstate
= TOPLEVEL
;
4315 seen_disp_event(term
);
4318 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
4321 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
4324 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
4327 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
4330 * From the VT100 Manual
4331 * NOTE: The special graphics characters in the VT100
4332 * are different from those in the VT52
4334 * From VT102 manual:
4335 * 137 _ Blank - Same
4336 * 140 ` Reserved - Humm.
4337 * 141 a Solid rectangle - Similar
4338 * 142 b 1/ - Top half of fraction for the
4339 * 143 c 3/ - subscript numbers below.
4342 * 146 f Degrees - Same
4343 * 147 g Plus or minus - Same
4345 * 151 i Ellipsis (dots)
4348 * 154 l Bar at scan 0
4349 * 155 m Bar at scan 1
4350 * 156 n Bar at scan 2
4351 * 157 o Bar at scan 3 - Similar
4352 * 160 p Bar at scan 4 - Similar
4353 * 161 q Bar at scan 5 - Similar
4354 * 162 r Bar at scan 6 - Same
4355 * 163 s Bar at scan 7 - Similar
4370 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
4373 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
4376 move(term
, 0, 0, 0);
4379 if (term
->curs
.y
== 0)
4380 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
4381 else if (term
->curs
.y
> 0)
4383 term
->wrapnext
= FALSE
;
4386 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4390 erase_lots(term
, TRUE
, FALSE
, TRUE
);
4394 /* XXX Print cursor line */
4397 /* XXX Start controller mode */
4400 /* XXX Stop controller mode */
4404 term
->termstate
= VT52_Y1
;
4408 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
4411 term
->app_keypad_keys
= TRUE
;
4414 term
->app_keypad_keys
= FALSE
;
4417 /* XXX This should switch to VT100 mode not current or default
4418 * VT mode. But this will only have effect in a VT220+
4421 term
->vt52_mode
= FALSE
;
4422 term
->blink_is_real
= term
->blinktext
;
4423 term_schedule_tblink(term
);
4427 /* XXX Enter auto print mode */
4430 /* XXX Exit auto print mode */
4433 /* XXX Print screen */
4439 /* compatibility(ATARI) */
4440 move(term
, 0, 0, 0);
4441 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4445 /* compatibility(ATARI) */
4446 if (term
->curs
.y
<= term
->marg_b
)
4447 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
4450 /* compatibility(ATARI) */
4451 if (term
->curs
.y
<= term
->marg_b
)
4452 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
4455 /* compatibility(ATARI) */
4456 term
->termstate
= VT52_FG
;
4459 /* compatibility(ATARI) */
4460 term
->termstate
= VT52_BG
;
4463 /* compatibility(ATARI) */
4464 erase_lots(term
, FALSE
, TRUE
, FALSE
);
4468 /* compatibility(ATARI) */
4469 term
->cursor_on
= TRUE
;
4472 /* compatibility(ATARI) */
4473 term
->cursor_on
= FALSE
;
4475 /* case 'j': Save cursor position - broken on ST */
4476 /* case 'k': Restore cursor position */
4478 /* compatibility(ATARI) */
4479 erase_lots(term
, TRUE
, TRUE
, TRUE
);
4481 term
->wrapnext
= FALSE
;
4484 /* compatibility(ATARI) */
4485 erase_lots(term
, TRUE
, TRUE
, FALSE
);
4488 /* compatibility(ATARI) */
4489 term
->curr_attr
|= ATTR_REVERSE
;
4492 /* compatibility(ATARI) */
4493 term
->curr_attr
&= ~ATTR_REVERSE
;
4495 case 'v': /* wrap Autowrap on - Wyse style */
4496 /* compatibility(ATARI) */
4499 case 'w': /* Autowrap off */
4500 /* compatibility(ATARI) */
4505 /* compatibility(OTHER) */
4506 term
->vt52_bold
= FALSE
;
4507 term
->curr_attr
= ATTR_DEFAULT
;
4508 set_erase_char(term
);
4511 /* compatibility(VI50) */
4512 term
->curr_attr
|= ATTR_UNDER
;
4515 /* compatibility(VI50) */
4516 term
->curr_attr
&= ~ATTR_UNDER
;
4519 /* compatibility(VI50) */
4520 term
->vt52_bold
= TRUE
;
4521 term
->curr_attr
|= ATTR_BOLD
;
4524 /* compatibility(VI50) */
4525 term
->vt52_bold
= FALSE
;
4526 term
->curr_attr
&= ~ATTR_BOLD
;
4532 term
->termstate
= VT52_Y2
;
4533 move(term
, term
->curs
.x
, c
- ' ', 0);
4536 term
->termstate
= TOPLEVEL
;
4537 move(term
, c
- ' ', term
->curs
.y
, 0);
4542 term
->termstate
= TOPLEVEL
;
4543 term
->curr_attr
&= ~ATTR_FGMASK
;
4544 term
->curr_attr
&= ~ATTR_BOLD
;
4545 term
->curr_attr
|= (c
& 0xF) << ATTR_FGSHIFT
;
4546 set_erase_char(term
);
4549 term
->termstate
= TOPLEVEL
;
4550 term
->curr_attr
&= ~ATTR_BGMASK
;
4551 term
->curr_attr
&= ~ATTR_BLINK
;
4552 term
->curr_attr
|= (c
& 0xF) << ATTR_BGSHIFT
;
4553 set_erase_char(term
);
4556 default: break; /* placate gcc warning about enum use */
4558 if (term
->selstate
!= NO_SELECTION
) {
4559 pos cursplus
= term
->curs
;
4561 check_selection(term
, term
->curs
, cursplus
);
4565 term_print_flush(term
);
4567 logflush(term
->logctx
);
4571 * To prevent having to run the reasonably tricky bidi algorithm
4572 * too many times, we maintain a cache of the last lineful of data
4573 * fed to the algorithm on each line of the display.
4575 static int term_bidi_cache_hit(Terminal
*term
, int line
,
4576 termchar
*lbefore
, int width
)
4580 if (!term
->pre_bidi_cache
)
4581 return FALSE
; /* cache doesn't even exist yet! */
4583 if (line
>= term
->bidi_cache_size
)
4584 return FALSE
; /* cache doesn't have this many lines */
4586 if (!term
->pre_bidi_cache
[line
].chars
)
4587 return FALSE
; /* cache doesn't contain _this_ line */
4589 if (term
->pre_bidi_cache
[line
].width
!= width
)
4590 return FALSE
; /* line is wrong width */
4592 for (i
= 0; i
< width
; i
++)
4593 if (!termchars_equal(term
->pre_bidi_cache
[line
].chars
+i
, lbefore
+i
))
4594 return FALSE
; /* line doesn't match cache */
4596 return TRUE
; /* it didn't match. */
4599 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
4600 termchar
*lafter
, bidi_char
*wcTo
,
4601 int width
, int size
)
4605 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
4606 int j
= term
->bidi_cache_size
;
4607 term
->bidi_cache_size
= line
+1;
4608 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
4609 term
->bidi_cache_size
,
4610 struct bidi_cache_entry
);
4611 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
4612 term
->bidi_cache_size
,
4613 struct bidi_cache_entry
);
4614 while (j
< term
->bidi_cache_size
) {
4615 term
->pre_bidi_cache
[j
].chars
=
4616 term
->post_bidi_cache
[j
].chars
= NULL
;
4617 term
->pre_bidi_cache
[j
].width
=
4618 term
->post_bidi_cache
[j
].width
= -1;
4619 term
->pre_bidi_cache
[j
].forward
=
4620 term
->post_bidi_cache
[j
].forward
= NULL
;
4621 term
->pre_bidi_cache
[j
].backward
=
4622 term
->post_bidi_cache
[j
].backward
= NULL
;
4627 sfree(term
->pre_bidi_cache
[line
].chars
);
4628 sfree(term
->post_bidi_cache
[line
].chars
);
4629 sfree(term
->post_bidi_cache
[line
].forward
);
4630 sfree(term
->post_bidi_cache
[line
].backward
);
4632 term
->pre_bidi_cache
[line
].width
= width
;
4633 term
->pre_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4634 term
->post_bidi_cache
[line
].width
= width
;
4635 term
->post_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4636 term
->post_bidi_cache
[line
].forward
= snewn(width
, int);
4637 term
->post_bidi_cache
[line
].backward
= snewn(width
, int);
4639 memcpy(term
->pre_bidi_cache
[line
].chars
, lbefore
, size
* TSIZE
);
4640 memcpy(term
->post_bidi_cache
[line
].chars
, lafter
, size
* TSIZE
);
4641 memset(term
->post_bidi_cache
[line
].forward
, 0, width
* sizeof(int));
4642 memset(term
->post_bidi_cache
[line
].backward
, 0, width
* sizeof(int));
4644 for (i
= 0; i
< width
; i
++) {
4645 int p
= wcTo
[i
].index
;
4647 assert(0 <= p
&& p
< width
);
4649 term
->post_bidi_cache
[line
].backward
[i
] = p
;
4650 term
->post_bidi_cache
[line
].forward
[p
] = i
;
4655 * Prepare the bidi information for a screen line. Returns the
4656 * transformed list of termchars, or NULL if no transformation at
4657 * all took place (because bidi is disabled). If return was
4658 * non-NULL, auxiliary information such as the forward and reverse
4659 * mappings of permutation position are available in
4660 * term->post_bidi_cache[scr_y].*.
4662 static termchar
*term_bidi_line(Terminal
*term
, struct termline
*ldata
,
4668 /* Do Arabic shaping and bidi. */
4669 if(!term
->bidi
|| !term
->arabicshaping
) {
4671 if (!term_bidi_cache_hit(term
, scr_y
, ldata
->chars
, term
->cols
)) {
4673 if (term
->wcFromTo_size
< term
->cols
) {
4674 term
->wcFromTo_size
= term
->cols
;
4675 term
->wcFrom
= sresize(term
->wcFrom
, term
->wcFromTo_size
,
4677 term
->wcTo
= sresize(term
->wcTo
, term
->wcFromTo_size
,
4681 for(it
=0; it
<term
->cols
; it
++)
4683 unsigned long uc
= (ldata
->chars
[it
].chr
);
4685 switch (uc
& CSET_MASK
) {
4687 if (!term
->rawcnp
) {
4688 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4692 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4695 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4698 switch (uc
& CSET_MASK
) {
4700 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4703 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4707 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4709 term
->wcFrom
[it
].index
= it
;
4713 do_bidi(term
->wcFrom
, term
->cols
);
4715 /* this is saved iff done from inside the shaping */
4716 if(!term
->bidi
&& term
->arabicshaping
)
4717 for(it
=0; it
<term
->cols
; it
++)
4718 term
->wcTo
[it
] = term
->wcFrom
[it
];
4720 if(!term
->arabicshaping
)
4721 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4723 if (term
->ltemp_size
< ldata
->size
) {
4724 term
->ltemp_size
= ldata
->size
;
4725 term
->ltemp
= sresize(term
->ltemp
, term
->ltemp_size
,
4729 memcpy(term
->ltemp
, ldata
->chars
, ldata
->size
* TSIZE
);
4731 for(it
=0; it
<term
->cols
; it
++)
4733 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4734 if (term
->ltemp
[it
].cc_next
)
4735 term
->ltemp
[it
].cc_next
-=
4736 it
- term
->wcTo
[it
].index
;
4738 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4739 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4741 term_bidi_cache_store(term
, scr_y
, ldata
->chars
,
4742 term
->ltemp
, term
->wcTo
,
4743 term
->cols
, ldata
->size
);
4745 lchars
= term
->ltemp
;
4747 lchars
= term
->post_bidi_cache
[scr_y
].chars
;
4757 * Given a context, update the window. Out of paranoia, we don't
4758 * allow WM_PAINT responses to do scrolling optimisations.
4760 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
4762 int i
, j
, our_curs_y
, our_curs_x
;
4767 #ifdef OPTIMISE_SCROLL
4768 struct scrollregion
*sr
;
4769 #endif /* OPTIMISE_SCROLL */
4773 ch
= snewn(chlen
, wchar_t);
4775 newline
= snewn(term
->cols
, termchar
);
4777 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
4780 * screen array, disptop, scrtop,
4782 * blinkpc, blink_is_real, tblinker,
4783 * curs.y, curs.x, cblinker, blink_cur, cursor_on, has_focus, wrapnext
4786 /* Has the cursor position or type changed ? */
4787 if (term
->cursor_on
) {
4788 if (term
->has_focus
) {
4789 if (term
->cblinker
|| !term
->blink_cur
)
4790 cursor
= TATTR_ACTCURS
;
4794 cursor
= TATTR_PASCURS
;
4796 cursor
|= TATTR_RIGHTCURS
;
4799 our_curs_y
= term
->curs
.y
- term
->disptop
;
4802 * Adjust the cursor position:
4804 * - in the case where it's resting on the right-hand half
4805 * of a CJK wide character. xterm's behaviour here,
4806 * which seems adequate to me, is to display the cursor
4807 * covering the _whole_ character, exactly as if it were
4808 * one space to the left.
4810 termline
*ldata
= lineptr(term
->curs
.y
);
4813 our_curs_x
= term
->curs
.x
;
4815 if ( (lchars
= term_bidi_line(term
, ldata
, our_curs_y
)) != NULL
) {
4816 our_curs_x
= term
->post_bidi_cache
[our_curs_y
].forward
[our_curs_x
];
4818 lchars
= ldata
->chars
;
4820 if (our_curs_x
> 0 &&
4821 lchars
[our_curs_x
].chr
== UCSWIDE
)
4828 * If the cursor is not where it was last time we painted, and
4829 * its previous position is visible on screen, invalidate its
4830 * previous position.
4832 if (term
->dispcursy
>= 0 &&
4833 (term
->curstype
!= cursor
||
4834 term
->dispcursy
!= our_curs_y
||
4835 term
->dispcursx
!= our_curs_x
)) {
4836 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
4839 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
4840 dispcurs
[-1].attr
|= ATTR_INVALID
;
4841 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
4842 dispcurs
[1].attr
|= ATTR_INVALID
;
4843 dispcurs
->attr
|= ATTR_INVALID
;
4847 term
->dispcursx
= term
->dispcursy
= -1;
4849 #ifdef OPTIMISE_SCROLL
4851 sr
= term
->scrollhead
;
4853 struct scrollregion
*next
= sr
->next
;
4854 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
4858 term
->scrollhead
= term
->scrolltail
= NULL
;
4859 #endif /* OPTIMISE_SCROLL */
4861 /* The normal screen data */
4862 for (i
= 0; i
< term
->rows
; i
++) {
4865 int dirty_line
, dirty_run
, selected
;
4866 unsigned long attr
= 0, cset
= 0;
4869 int last_run_dirty
= 0;
4870 int laststart
, dirtyrect
;
4873 scrpos
.y
= i
+ term
->disptop
;
4874 ldata
= lineptr(scrpos
.y
);
4876 /* Do Arabic shaping and bidi. */
4877 lchars
= term_bidi_line(term
, ldata
, i
);
4879 backward
= term
->post_bidi_cache
[i
].backward
;
4881 lchars
= ldata
->chars
;
4886 * First loop: work along the line deciding what we want
4887 * each character cell to look like.
4889 for (j
= 0; j
< term
->cols
; j
++) {
4890 unsigned long tattr
, tchar
;
4891 termchar
*d
= lchars
+ j
;
4892 scrpos
.x
= backward ? backward
[j
] : j
;
4897 if (!term
->ansi_colour
)
4898 tattr
= (tattr
& ~(ATTR_FGMASK
| ATTR_BGMASK
)) |
4899 ATTR_DEFFG
| ATTR_DEFBG
;
4901 if (!term
->xterm_256_colour
) {
4903 colour
= (tattr
& ATTR_FGMASK
) >> ATTR_FGSHIFT
;
4904 if (colour
>= 16 && colour
< 256)
4905 tattr
= (tattr
&~ ATTR_FGMASK
) | ATTR_DEFFG
;
4906 colour
= (tattr
& ATTR_BGMASK
) >> ATTR_BGSHIFT
;
4907 if (colour
>= 16 && colour
< 256)
4908 tattr
= (tattr
&~ ATTR_BGMASK
) | ATTR_DEFBG
;
4911 switch (tchar
& CSET_MASK
) {
4913 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4916 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4919 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4922 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4925 /* Video reversing things */
4926 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4927 if (term
->seltype
== LEXICOGRAPHIC
)
4928 selected
= (posle(term
->selstart
, scrpos
) &&
4929 poslt(scrpos
, term
->selend
));
4931 selected
= (posPle(term
->selstart
, scrpos
) &&
4932 posPlt(scrpos
, term
->selend
));
4936 ^ (selected ? ATTR_REVERSE
: 0));
4938 /* 'Real' blinking ? */
4939 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4940 if (term
->has_focus
&& term
->tblinker
) {
4941 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4943 tattr
&= ~ATTR_BLINK
;
4947 * Check the font we'll _probably_ be using to see if
4948 * the character is wide when we don't want it to be.
4950 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4951 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4952 (ATTR_NARROW
| DATTR_MASK
))) {
4953 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4954 tattr
|= ATTR_NARROW
;
4955 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4956 tattr
|= ATTR_NARROW
;
4958 if (i
== our_curs_y
&& j
== our_curs_x
) {
4960 term
->curstype
= cursor
;
4961 term
->dispcursx
= j
;
4962 term
->dispcursy
= i
;
4966 newline
[j
].attr
= tattr
;
4967 newline
[j
].chr
= tchar
;
4968 /* Combining characters are still read from lchars */
4969 newline
[j
].cc_next
= 0;
4973 * Now loop over the line again, noting where things have
4976 * During this loop, we keep track of where we last saw
4977 * DATTR_STARTRUN. Any mismatch automatically invalidates
4978 * _all_ of the containing run that was last printed: that
4979 * is, any rectangle that was drawn in one go in the
4980 * previous update should be either left completely alone
4981 * or overwritten in its entirety. This, along with the
4982 * expectation that front ends clip all text runs to their
4983 * bounding rectangle, should solve any possible problems
4984 * with fonts that overflow their character cells.
4988 for (j
= 0; j
< term
->cols
; j
++) {
4989 if (term
->disptext
[i
]->chars
[j
].attr
& DATTR_STARTRUN
) {
4994 if (term
->disptext
[i
]->chars
[j
].chr
!= newline
[j
].chr
||
4995 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
)
4996 != newline
[j
].attr
) {
5000 for (k
= laststart
; k
< j
; k
++)
5001 term
->disptext
[i
]->chars
[k
].attr
|= ATTR_INVALID
;
5008 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5012 * Finally, loop once more and actually do the drawing.
5014 dirty_run
= dirty_line
= (ldata
->lattr
!=
5015 term
->disptext
[i
]->lattr
);
5016 term
->disptext
[i
]->lattr
= ldata
->lattr
;
5018 for (j
= 0; j
< term
->cols
; j
++) {
5019 unsigned long tattr
, tchar
;
5020 int break_run
, do_copy
;
5021 termchar
*d
= lchars
+ j
;
5023 tattr
= newline
[j
].attr
;
5024 tchar
= newline
[j
].chr
;
5026 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
5029 break_run
= ((tattr
^ attr
) & term
->attr_mask
) != 0;
5031 #ifdef USES_VTLINE_HACK
5032 /* Special hack for VT100 Linedraw glyphs */
5033 if ((tchar
>= 0x23BA && tchar
<= 0x23BD) ||
5034 (j
> 0 && (newline
[j
-1].chr
>= 0x23BA &&
5035 newline
[j
-1].chr
<= 0x23BD)))
5040 * Separate out sequences of characters that have the
5041 * same CSET, if that CSET is a magic one.
5043 if (CSET_OF(tchar
) != cset
)
5047 * Break on both sides of any combined-character cell.
5049 if (d
->cc_next
!= 0 ||
5050 (j
> 0 && d
[-1].cc_next
!= 0))
5053 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
5054 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
5055 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
) == tattr
)
5057 else if (!dirty_run
&& ccount
== 1)
5062 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
5063 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
5065 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
5066 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
5072 cset
= CSET_OF(tchar
);
5073 if (term
->ucsdata
->dbcs_screenfont
)
5074 last_run_dirty
= dirty_run
;
5075 dirty_run
= dirty_line
;
5079 if (!termchars_equal_override(&term
->disptext
[i
]->chars
[j
],
5085 if (ccount
+2 > chlen
) {
5086 chlen
= ccount
+ 256;
5087 ch
= sresize(ch
, chlen
, wchar_t);
5090 #ifdef PLATFORM_IS_UTF16
5091 if (tchar
> 0x10000 && tchar
< 0x110000) {
5092 ch
[ccount
++] = (wchar_t) HIGH_SURROGATE_OF(tchar
);
5093 ch
[ccount
++] = (wchar_t) LOW_SURROGATE_OF(tchar
);
5095 #endif /* PLATFORM_IS_UTF16 */
5096 ch
[ccount
++] = (wchar_t) tchar
;
5101 while (dd
->cc_next
) {
5102 unsigned long schar
;
5107 switch (schar
& CSET_MASK
) {
5109 schar
= term
->ucsdata
->unitab_line
[schar
& 0xFF];
5112 schar
= term
->ucsdata
->unitab_xterm
[schar
& 0xFF];
5115 schar
= term
->ucsdata
->unitab_scoacs
[schar
&0xFF];
5119 if (ccount
+2 > chlen
) {
5120 chlen
= ccount
+ 256;
5121 ch
= sresize(ch
, chlen
, wchar_t);
5124 #ifdef PLATFORM_IS_UTF16
5125 if (schar
> 0x10000 && schar
< 0x110000) {
5126 ch
[ccount
++] = (wchar_t) HIGH_SURROGATE_OF(schar
);
5127 ch
[ccount
++] = (wchar_t) LOW_SURROGATE_OF(schar
);
5129 #endif /* PLATFORM_IS_UTF16 */
5130 ch
[ccount
++] = (wchar_t) schar
;
5133 attr
|= TATTR_COMBINING
;
5137 copy_termchar(term
->disptext
[i
], j
, d
);
5138 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
5139 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
5141 term
->disptext
[i
]->chars
[j
].attr
|= DATTR_STARTRUN
;
5144 /* If it's a wide char step along to the next one. */
5145 if (tattr
& ATTR_WIDE
) {
5146 if (++j
< term
->cols
) {
5149 * By construction above, the cursor should not
5150 * be on the right-hand half of this character.
5153 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
5154 if (!termchars_equal(&term
->disptext
[i
]->chars
[j
], d
))
5156 copy_termchar(term
->disptext
[i
], j
, d
);
5160 if (dirty_run
&& ccount
> 0) {
5161 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
5163 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
5164 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
5176 * Invalidate the whole screen so it will be repainted in full.
5178 void term_invalidate(Terminal
*term
)
5182 for (i
= 0; i
< term
->rows
; i
++)
5183 for (j
= 0; j
< term
->cols
; j
++)
5184 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5186 term_schedule_update(term
);
5190 * Paint the window in response to a WM_PAINT message.
5192 void term_paint(Terminal
*term
, Context ctx
,
5193 int left
, int top
, int right
, int bottom
, int immediately
)
5196 if (left
< 0) left
= 0;
5197 if (top
< 0) top
= 0;
5198 if (right
>= term
->cols
) right
= term
->cols
-1;
5199 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
5201 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
5202 if ((term
->disptext
[i
]->lattr
& LATTR_MODE
) == LATTR_NORM
)
5203 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
5204 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5206 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
5207 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5211 do_paint (term
, ctx
, FALSE
);
5213 term_schedule_update(term
);
5218 * Attempt to scroll the scrollback. The second parameter gives the
5219 * position we want to scroll to; the first is +1 to denote that
5220 * this position is relative to the beginning of the scrollback, -1
5221 * to denote it is relative to the end, and 0 to denote that it is
5222 * relative to the current position.
5224 void term_scroll(Terminal
*term
, int rel
, int where
)
5226 int sbtop
= -sblines(term
);
5227 #ifdef OPTIMISE_SCROLL
5228 int olddisptop
= term
->disptop
;
5230 #endif /* OPTIMISE_SCROLL */
5232 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
5233 if (term
->disptop
< sbtop
)
5234 term
->disptop
= sbtop
;
5235 if (term
->disptop
> 0)
5238 #ifdef OPTIMISE_SCROLL
5239 shift
= (term
->disptop
- olddisptop
);
5240 if (shift
< term
->rows
&& shift
> -term
->rows
)
5241 scroll_display(term
, 0, term
->rows
- 1, shift
);
5242 #endif /* OPTIMISE_SCROLL */
5247 * Scroll the scrollback to centre it on the beginning or end of the
5248 * current selection, if any.
5250 void term_scroll_to_selection(Terminal
*term
, int which_end
)
5254 int sbtop
= -sblines(term
);
5256 if (term
->selstate
!= SELECTED
)
5259 target
= term
->selend
;
5261 target
= term
->selstart
;
5263 y
= target
.y
- term
->rows
/2;
5268 term_scroll(term
, -1, y
);
5272 * Helper routine for clipme(): growing buffer.
5275 int buflen
; /* amount of allocated space in textbuf/attrbuf */
5276 int bufpos
; /* amount of actual data */
5277 wchar_t *textbuf
; /* buffer for copied text */
5278 wchar_t *textptr
; /* = textbuf + bufpos (current insertion point) */
5279 int *attrbuf
; /* buffer for copied attributes */
5280 int *attrptr
; /* = attrbuf + bufpos */
5283 static void clip_addchar(clip_workbuf
*b
, wchar_t chr
, int attr
)
5285 if (b
->bufpos
>= b
->buflen
) {
5287 b
->textbuf
= sresize(b
->textbuf
, b
->buflen
, wchar_t);
5288 b
->textptr
= b
->textbuf
+ b
->bufpos
;
5289 b
->attrbuf
= sresize(b
->attrbuf
, b
->buflen
, int);
5290 b
->attrptr
= b
->attrbuf
+ b
->bufpos
;
5292 *b
->textptr
++ = chr
;
5293 *b
->attrptr
++ = attr
;
5297 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
5305 buf
.textptr
= buf
.textbuf
= snewn(buf
.buflen
, wchar_t);
5306 buf
.attrptr
= buf
.attrbuf
= snewn(buf
.buflen
, int);
5308 old_top_x
= top
.x
; /* needed for rect==1 */
5310 while (poslt(top
, bottom
)) {
5312 termline
*ldata
= lineptr(top
.y
);
5316 * nlpos will point at the maximum position on this line we
5317 * should copy up to. So we start it at the end of the
5321 nlpos
.x
= term
->cols
;
5324 * ... move it backwards if there's unused space at the end
5325 * of the line (and also set `nl' if this is the case,
5326 * because in normal selection mode this means we need a
5327 * newline at the end)...
5329 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5331 IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
5332 !ldata
->chars
[nlpos
.x
- 1].cc_next
&&
5335 if (poslt(nlpos
, bottom
))
5337 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
5338 /* Ignore the last char on the line in a WRAPPED2 line. */
5343 * ... and then clip it to the terminal x coordinate if
5344 * we're doing rectangular selection. (In this case we
5345 * still did the above, so that copying e.g. the right-hand
5346 * column from a table doesn't fill with spaces on the
5350 if (nlpos
.x
> bottom
.x
)
5352 nl
= (top
.y
< bottom
.y
);
5355 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
5358 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
5360 wchar_t cbuf
[16], *p
;
5364 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
5370 int uc
= ldata
->chars
[x
].chr
;
5371 attr
= ldata
->chars
[x
].attr
;
5373 switch (uc
& CSET_MASK
) {
5375 if (!term
->rawcnp
) {
5376 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5380 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5383 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5386 switch (uc
& CSET_MASK
) {
5388 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5391 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5395 c
= (uc
& ~CSET_MASK
);
5396 #ifdef PLATFORM_IS_UTF16
5397 if (uc
> 0x10000 && uc
< 0x110000) {
5398 cbuf
[0] = 0xD800 | ((uc
- 0x10000) >> 10);
5399 cbuf
[1] = 0xDC00 | ((uc
- 0x10000) & 0x3FF);
5408 if (DIRECT_FONT(uc
)) {
5409 if (c
>= ' ' && c
!= 0x7F) {
5413 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
5415 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
5416 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
5420 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
5424 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
5431 for (p
= cbuf
; *p
; p
++)
5432 clip_addchar(&buf
, *p
, attr
);
5434 if (ldata
->chars
[x
].cc_next
)
5435 x
+= ldata
->chars
[x
].cc_next
;
5443 for (i
= 0; i
< sel_nl_sz
; i
++)
5444 clip_addchar(&buf
, sel_nl
[i
], 0);
5447 top
.x
= rect ? old_top_x
: 0;
5451 #if SELECTION_NUL_TERMINATED
5452 clip_addchar(&buf
, 0, 0);
5454 /* Finally, transfer all that to the clipboard. */
5455 write_clip(term
->frontend
, buf
.textbuf
, buf
.attrbuf
, buf
.bufpos
, desel
);
5460 void term_copyall(Terminal
*term
)
5464 tree234
*screen
= term
->screen
;
5465 top
.y
= -sblines(term
);
5467 bottom
.y
= find_last_nonempty_line(term
, screen
);
5468 bottom
.x
= term
->cols
;
5469 clipme(term
, top
, bottom
, 0, TRUE
);
5473 * The wordness array is mainly for deciding the disposition of the
5474 * US-ASCII characters.
5476 static int wordtype(Terminal
*term
, int uc
)
5479 int start
, end
, ctype
;
5481 static const struct ucsword ucs_words
[] = {
5487 0x037e, 0x037e, 1}, /* Greek question mark */
5489 0x0387, 0x0387, 1}, /* Greek ano teleia */
5491 0x055a, 0x055f, 1}, /* Armenian punctuation */
5493 0x0589, 0x0589, 1}, /* Armenian full stop */
5495 0x0700, 0x070d, 1}, /* Syriac punctuation */
5497 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5499 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5501 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5503 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5505 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5507 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5509 0x2000, 0x200a, 0}, /* Various spaces */
5511 0x2070, 0x207f, 2}, /* superscript */
5513 0x2080, 0x208f, 2}, /* subscript */
5515 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5517 0x3000, 0x3000, 0}, /* ideographic space */
5519 0x3001, 0x3020, 1}, /* ideographic punctuation */
5521 0x303f, 0x309f, 3}, /* Hiragana */
5523 0x30a0, 0x30ff, 3}, /* Katakana */
5525 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5527 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5529 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5531 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5533 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5535 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5537 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5539 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5541 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5545 const struct ucsword
*wptr
;
5547 switch (uc
& CSET_MASK
) {
5549 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5552 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5555 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5558 switch (uc
& CSET_MASK
) {
5560 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5563 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5567 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5568 * fail as there's such a thing as a double width space. :-(
5570 if (term
->ucsdata
->dbcs_screenfont
&&
5571 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
5575 return term
->wordness
[uc
];
5577 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
5578 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
5586 * Spread the selection outwards according to the selection mode.
5588 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
5592 int topy
= -sblines(term
);
5594 ldata
= lineptr(p
.y
);
5596 switch (term
->selmode
) {
5599 * In this mode, every character is a separate unit, except
5600 * for runs of spaces at the end of a non-wrapping line.
5602 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5603 termchar
*q
= ldata
->chars
+ term
->cols
;
5604 while (q
> ldata
->chars
&&
5605 IS_SPACE_CHR(q
[-1].chr
) && !q
[-1].cc_next
)
5607 if (q
== ldata
->chars
+ term
->cols
)
5609 if (p
.x
>= q
- ldata
->chars
)
5610 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
5615 * In this mode, the units are maximal runs of characters
5616 * whose `wordness' has the same value.
5618 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
5621 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
5622 term
->cols
-1 : term
->cols
);
5623 if (p
.x
< maxcols
-1) {
5624 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
5629 if (ldata
->lattr
& LATTR_WRAPPED
) {
5631 ldata2
= lineptr(p
.y
+1);
5632 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
5649 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
5658 ldata2
= lineptr(p
.y
-1);
5659 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
5660 term
->cols
-1 : term
->cols
);
5661 if (ldata2
->lattr
& LATTR_WRAPPED
) {
5662 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
5680 * In this mode, every line is a unit.
5682 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
5690 static void sel_spread(Terminal
*term
)
5692 if (term
->seltype
== LEXICOGRAPHIC
) {
5693 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
5694 decpos(term
->selend
);
5695 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
5696 incpos(term
->selend
);
5700 void term_do_paste(Terminal
*term
)
5705 get_clip(term
->frontend
, &data
, &len
);
5706 if (data
&& len
> 0) {
5709 term_seen_key_event(term
); /* pasted data counts */
5711 if (term
->paste_buffer
)
5712 sfree(term
->paste_buffer
);
5713 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5714 term
->paste_buffer
= snewn(len
+ 12, wchar_t);
5716 if (term
->bracketed_paste
) {
5717 memcpy(term
->paste_buffer
, L
"\033[200~", 6 * sizeof(wchar_t));
5718 term
->paste_len
+= 6;
5722 while (p
< data
+ len
) {
5723 while (p
< data
+ len
&&
5724 !(p
<= data
+ len
- sel_nl_sz
&&
5725 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
5730 for (i
= 0; i
< p
- q
; i
++) {
5731 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
5735 if (p
<= data
+ len
- sel_nl_sz
&&
5736 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
5737 term
->paste_buffer
[term
->paste_len
++] = '\015';
5743 if (term
->bracketed_paste
) {
5744 memcpy(term
->paste_buffer
+ term
->paste_len
,
5745 L
"\033[201~", 6 * sizeof(wchar_t));
5746 term
->paste_len
+= 6;
5749 /* Assume a small paste will be OK in one go. */
5750 if (term
->paste_len
< 256) {
5752 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
5753 if (term
->paste_buffer
)
5754 sfree(term
->paste_buffer
);
5755 term
->paste_buffer
= 0;
5756 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5759 get_clip(term
->frontend
, NULL
, NULL
);
5762 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
5763 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
5767 int raw_mouse
= (term
->xterm_mouse
&&
5768 !term
->no_mouse_rep
&&
5769 !(term
->mouse_override
&& shift
));
5770 int default_seltype
;
5774 if (a
== MA_DRAG
&& !raw_mouse
)
5775 term_scroll(term
, 0, -1);
5777 if (y
>= term
->rows
) {
5779 if (a
== MA_DRAG
&& !raw_mouse
)
5780 term_scroll(term
, 0, +1);
5789 if (x
>= term
->cols
)
5792 selpoint
.y
= y
+ term
->disptop
;
5793 ldata
= lineptr(selpoint
.y
);
5795 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
5799 * Transform x through the bidi algorithm to find the _logical_
5800 * click point from the physical one.
5802 if (term_bidi_line(term
, ldata
, y
) != NULL
) {
5803 x
= term
->post_bidi_cache
[y
].backward
[x
];
5810 * If we're in the middle of a selection operation, we ignore raw
5811 * mouse mode until it's done (we must have been not in raw mouse
5812 * mode when it started).
5813 * This makes use of Shift for selection reliable, and avoids the
5814 * host seeing mouse releases for which they never saw corresponding
5818 (term
->selstate
!= ABOUT_TO
) && (term
->selstate
!= DRAGGING
)) {
5819 int encstate
= 0, r
, c
;
5826 encstate
= 0x20; /* left button down */
5837 case MBT_WHEEL_DOWN
:
5840 default: break; /* placate gcc warning about enum use */
5844 if (term
->xterm_mouse
== 1)
5850 term
->mouse_is_down
= 0;
5853 if (term
->mouse_is_down
== braw
)
5855 term
->mouse_is_down
= braw
;
5857 default: break; /* placate gcc warning about enum use */
5866 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
5867 ldisc_send(term
->ldisc
, abuf
, 6, 0);
5873 * Set the selection type (rectangular or normal) at the start
5874 * of a selection attempt, from the state of Alt.
5876 if (!alt
^ !term
->rect_select
)
5877 default_seltype
= RECTANGULAR
;
5879 default_seltype
= LEXICOGRAPHIC
;
5881 if (term
->selstate
== NO_SELECTION
) {
5882 term
->seltype
= default_seltype
;
5885 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
5887 term
->selstate
= ABOUT_TO
;
5888 term
->seltype
= default_seltype
;
5889 term
->selanchor
= selpoint
;
5890 term
->selmode
= SM_CHAR
;
5891 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
5893 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
5894 term
->selstate
= DRAGGING
;
5895 term
->selstart
= term
->selanchor
= selpoint
;
5896 term
->selend
= term
->selstart
;
5897 incpos(term
->selend
);
5899 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
5900 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
5901 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
5903 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
5904 term
->selstate
== SELECTED
) {
5905 if (term
->seltype
== LEXICOGRAPHIC
) {
5907 * For normal selection, we extend by moving
5908 * whichever end of the current selection is closer
5911 if (posdiff(selpoint
, term
->selstart
) <
5912 posdiff(term
->selend
, term
->selstart
) / 2) {
5913 term
->selanchor
= term
->selend
;
5914 decpos(term
->selanchor
);
5916 term
->selanchor
= term
->selstart
;
5920 * For rectangular selection, we have a choice of
5921 * _four_ places to put selanchor and selpoint: the
5922 * four corners of the selection.
5924 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
5925 term
->selanchor
.x
= term
->selend
.x
-1;
5927 term
->selanchor
.x
= term
->selstart
.x
;
5929 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
5930 term
->selanchor
.y
= term
->selend
.y
;
5932 term
->selanchor
.y
= term
->selstart
.y
;
5934 term
->selstate
= DRAGGING
;
5936 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
5937 term
->selanchor
= selpoint
;
5938 term
->selstate
= DRAGGING
;
5939 if (term
->seltype
== LEXICOGRAPHIC
) {
5941 * For normal selection, we set (selstart,selend) to
5942 * (selpoint,selanchor) in some order.
5944 if (poslt(selpoint
, term
->selanchor
)) {
5945 term
->selstart
= selpoint
;
5946 term
->selend
= term
->selanchor
;
5947 incpos(term
->selend
);
5949 term
->selstart
= term
->selanchor
;
5950 term
->selend
= selpoint
;
5951 incpos(term
->selend
);
5955 * For rectangular selection, we may need to
5956 * interchange x and y coordinates (if the user has
5957 * dragged in the -x and +y directions, or vice versa).
5959 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
5960 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
5961 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
5962 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
5965 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
5967 if (term
->selstate
== DRAGGING
) {
5969 * We've completed a selection. We now transfer the
5970 * data to the clipboard.
5972 clipme(term
, term
->selstart
, term
->selend
,
5973 (term
->seltype
== RECTANGULAR
), FALSE
);
5974 term
->selstate
= SELECTED
;
5976 term
->selstate
= NO_SELECTION
;
5977 } else if (bcooked
== MBT_PASTE
5979 #if MULTICLICK_ONLY_EVENT
5980 || a
== MA_2CLK
|| a
== MA_3CLK
5983 request_paste(term
->frontend
);
5989 int format_arrow_key(char *buf
, Terminal
*term
, int xkey
, int ctrl
)
5993 if (term
->vt52_mode
)
5994 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5996 int app_flg
= (term
->app_cursor_keys
&& !term
->no_applic_c
);
5999 * RDB: VT100 & VT102 manuals both state the app cursor
6000 * keys only work if the app keypad is on.
6002 * SGT: That may well be true, but xterm disagrees and so
6003 * does at least one application, so I've #if'ed this out
6004 * and the behaviour is back to PuTTY's original: app
6005 * cursor and app keypad are independently switchable
6006 * modes. If anyone complains about _this_ I'll have to
6007 * put in a configurable option.
6009 if (!term
->app_keypad_keys
)
6012 /* Useful mapping of Ctrl-arrows */
6017 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
6019 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6025 void term_nopaste(Terminal
*term
)
6027 if (term
->paste_len
== 0)
6029 sfree(term
->paste_buffer
);
6030 term
->paste_buffer
= NULL
;
6031 term
->paste_len
= 0;
6034 int term_paste_pending(Terminal
*term
)
6036 return term
->paste_len
!= 0;
6039 void term_paste(Terminal
*term
)
6041 long now
, paste_diff
;
6043 if (term
->paste_len
== 0)
6046 /* Don't wait forever to paste */
6047 if (term
->paste_hold
) {
6048 now
= GETTICKCOUNT();
6049 paste_diff
= now
- term
->last_paste
;
6050 if (paste_diff
>= 0 && paste_diff
< 450)
6053 term
->paste_hold
= 0;
6055 while (term
->paste_pos
< term
->paste_len
) {
6057 while (n
+ term
->paste_pos
< term
->paste_len
) {
6058 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
6062 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
6063 term
->paste_pos
+= n
;
6065 if (term
->paste_pos
< term
->paste_len
) {
6066 term
->paste_hold
= 1;
6070 sfree(term
->paste_buffer
);
6071 term
->paste_buffer
= NULL
;
6072 term
->paste_len
= 0;
6075 static void deselect(Terminal
*term
)
6077 term
->selstate
= NO_SELECTION
;
6078 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
6081 void term_deselect(Terminal
*term
)
6087 int term_ldisc(Terminal
*term
, int option
)
6089 if (option
== LD_ECHO
)
6090 return term
->term_echoing
;
6091 if (option
== LD_EDIT
)
6092 return term
->term_editing
;
6096 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
6098 bufchain_add(&term
->inbuf
, data
, len
);
6100 if (!term
->in_term_out
) {
6101 term
->in_term_out
= TRUE
;
6102 term_reset_cblink(term
);
6104 * During drag-selects, we do not process terminal input,
6105 * because the user will want the screen to hold still to
6108 if (term
->selstate
!= DRAGGING
)
6110 term
->in_term_out
= FALSE
;
6114 * term_out() always completely empties inbuf. Therefore,
6115 * there's no reason at all to return anything other than zero
6116 * from this function, because there _can't_ be a question of
6117 * the remote side needing to wait until term_out() has cleared
6120 * This is a slightly suboptimal way to deal with SSH-2 - in
6121 * principle, the window mechanism would allow us to continue
6122 * to accept data on forwarded ports and X connections even
6123 * while the terminal processing was going slowly - but we
6124 * can't do the 100% right thing without moving the terminal
6125 * processing into a separate thread, and that might hurt
6126 * portability. So we manage stdout buffering the old SSH-1 way:
6127 * if the terminal processing goes slowly, the whole SSH
6128 * connection stops accepting data until it's ready.
6130 * In practice, I can't imagine this causing serious trouble.
6136 * Write untrusted data to the terminal.
6137 * The only control character that should be honoured is \n (which
6138 * will behave as a CRLF).
6140 int term_data_untrusted(Terminal
*term
, const char *data
, int len
)
6143 /* FIXME: more sophisticated checking? */
6144 for (i
= 0; i
< len
; i
++) {
6145 if (data
[i
] == '\n')
6146 term_data(term
, 1, "\r\n", 2);
6147 else if (data
[i
] & 0x60)
6148 term_data(term
, 1, data
+ i
, 1);
6150 return 0; /* assumes that term_data() always returns 0 */
6153 void term_provide_logctx(Terminal
*term
, void *logctx
)
6155 term
->logctx
= logctx
;
6158 void term_set_focus(Terminal
*term
, int has_focus
)
6160 term
->has_focus
= has_focus
;
6161 term_schedule_cblink(term
);
6165 * Provide "auto" settings for remote tty modes, suitable for an
6166 * application with a terminal window.
6168 char *term_get_ttymode(Terminal
*term
, const char *mode
)
6171 if (strcmp(mode
, "ERASE") == 0) {
6172 val
= term
->bksp_is_delete ?
"^?" : "^H";
6174 /* FIXME: perhaps we should set ONLCR based on lfhascr as well? */
6175 /* FIXME: or ECHO and friends based on local echo state? */
6179 struct term_userpass_state
{
6181 int done_prompt
; /* printed out prompt yet? */
6182 size_t pos
; /* cursor position */
6186 * Process some terminal data in the course of username/password
6189 int term_get_userpass_input(Terminal
*term
, prompts_t
*p
,
6190 unsigned char *in
, int inlen
)
6192 struct term_userpass_state
*s
= (struct term_userpass_state
*)p
->data
;
6195 * First call. Set some stuff up.
6197 p
->data
= s
= snew(struct term_userpass_state
);
6200 /* We only print the `name' caption if we have to... */
6201 if (p
->name_reqd
&& p
->name
) {
6202 size_t l
= strlen(p
->name
);
6203 term_data_untrusted(term
, p
->name
, l
);
6204 if (p
->name
[l
-1] != '\n')
6205 term_data_untrusted(term
, "\n", 1);
6207 /* ...but we always print any `instruction'. */
6208 if (p
->instruction
) {
6209 size_t l
= strlen(p
->instruction
);
6210 term_data_untrusted(term
, p
->instruction
, l
);
6211 if (p
->instruction
[l
-1] != '\n')
6212 term_data_untrusted(term
, "\n", 1);
6215 * Zero all the results, in case we abort half-way through.
6219 for (i
= 0; i
< (int)p
->n_prompts
; i
++)
6220 prompt_set_result(p
->prompts
[i
], "");
6224 while (s
->curr_prompt
< p
->n_prompts
) {
6226 prompt_t
*pr
= p
->prompts
[s
->curr_prompt
];
6227 int finished_prompt
= 0;
6229 if (!s
->done_prompt
) {
6230 term_data_untrusted(term
, pr
->prompt
, strlen(pr
->prompt
));
6235 /* Breaking out here ensures that the prompt is printed even
6236 * if we're now waiting for user data. */
6237 if (!in
|| !inlen
) break;
6239 /* FIXME: should we be using local-line-editing code instead? */
6240 while (!finished_prompt
&& inlen
) {
6246 term_data(term
, 0, "\r\n", 2);
6247 prompt_ensure_result_size(pr
, s
->pos
+ 1);
6248 pr
->result
[s
->pos
] = '\0';
6249 /* go to next prompt, if any */
6252 finished_prompt
= 1; /* break out */
6258 term_data(term
, 0, "\b \b", 3);
6264 while (s
->pos
> 0) {
6266 term_data(term
, 0, "\b \b", 3);
6272 /* Immediate abort. */
6273 term_data(term
, 0, "\r\n", 2);
6276 return 0; /* user abort */
6279 * This simplistic check for printability is disabled
6280 * when we're doing password input, because some people
6281 * have control characters in their passwords.
6283 if (!pr
->echo
|| (c
>= ' ' && c
<= '~') ||
6284 ((unsigned char) c
>= 160)) {
6285 prompt_ensure_result_size(pr
, s
->pos
+ 1);
6286 pr
->result
[s
->pos
++] = c
;
6288 term_data(term
, 0, &c
, 1);
6296 if (s
->curr_prompt
< p
->n_prompts
) {
6297 return -1; /* more data required */
6301 return +1; /* all done */