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 term
->xterm_extended_mouse
= 0;
1228 term
->urxvt_extended_mouse
= 0;
1229 set_raw_mouse_mode(term
->frontend
, FALSE
);
1230 term
->bracketed_paste
= FALSE
;
1233 for (i
= 0; i
< 256; i
++)
1234 term
->wordness
[i
] = conf_get_int_int(term
->conf
, CONF_wordness
, i
);
1237 swap_screen(term
, 1, FALSE
, FALSE
);
1238 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1239 swap_screen(term
, 0, FALSE
, FALSE
);
1241 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1242 term
->curs
.y
= find_last_nonempty_line(term
, term
->screen
) + 1;
1243 if (term
->curs
.y
== term
->rows
) {
1245 scroll(term
, 0, term
->rows
- 1, 1, TRUE
);
1251 term_schedule_tblink(term
);
1252 term_schedule_cblink(term
);
1256 * Force a screen update.
1258 void term_update(Terminal
*term
)
1262 term
->window_update_pending
= FALSE
;
1264 ctx
= get_ctx(term
->frontend
);
1266 int need_sbar_update
= term
->seen_disp_event
;
1267 if (term
->seen_disp_event
&& term
->scroll_on_disp
) {
1268 term
->disptop
= 0; /* return to main screen */
1269 term
->seen_disp_event
= 0;
1270 need_sbar_update
= TRUE
;
1273 if (need_sbar_update
)
1275 do_paint(term
, ctx
, TRUE
);
1276 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
1282 * Called from front end when a keypress occurs, to trigger
1283 * anything magical that needs to happen in that situation.
1285 void term_seen_key_event(Terminal
*term
)
1288 * On any keypress, clear the bell overload mechanism
1289 * completely, on the grounds that large numbers of
1290 * beeps coming from deliberate key action are likely
1291 * to be intended (e.g. beeps from filename completion
1292 * blocking repeatedly).
1294 term
->beep_overloaded
= FALSE
;
1295 while (term
->beephead
) {
1296 struct beeptime
*tmp
= term
->beephead
;
1297 term
->beephead
= tmp
->next
;
1300 term
->beeptail
= NULL
;
1304 * Reset the scrollback on keypress, if we're doing that.
1306 if (term
->scroll_on_key
) {
1307 term
->disptop
= 0; /* return to main screen */
1308 seen_disp_event(term
);
1313 * Same as power_on(), but an external function.
1315 void term_pwron(Terminal
*term
, int clear
)
1317 power_on(term
, clear
);
1318 if (term
->ldisc
) /* cause ldisc to notice changes */
1319 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1325 static void set_erase_char(Terminal
*term
)
1327 term
->erase_char
= term
->basic_erase_char
;
1329 term
->erase_char
.attr
= (term
->curr_attr
&
1330 (ATTR_FGMASK
| ATTR_BGMASK
));
1334 * We copy a bunch of stuff out of the Conf structure into local
1335 * fields in the Terminal structure, to avoid the repeated tree234
1336 * lookups which would be involved in fetching them from the former
1339 void term_copy_stuff_from_conf(Terminal
*term
)
1341 term
->ansi_colour
= conf_get_int(term
->conf
, CONF_ansi_colour
);
1342 term
->arabicshaping
= conf_get_int(term
->conf
, CONF_arabicshaping
);
1343 term
->beep
= conf_get_int(term
->conf
, CONF_beep
);
1344 term
->bellovl
= conf_get_int(term
->conf
, CONF_bellovl
);
1345 term
->bellovl_n
= conf_get_int(term
->conf
, CONF_bellovl_n
);
1346 term
->bellovl_s
= conf_get_int(term
->conf
, CONF_bellovl_s
);
1347 term
->bellovl_t
= conf_get_int(term
->conf
, CONF_bellovl_t
);
1348 term
->bidi
= conf_get_int(term
->conf
, CONF_bidi
);
1349 term
->bksp_is_delete
= conf_get_int(term
->conf
, CONF_bksp_is_delete
);
1350 term
->blink_cur
= conf_get_int(term
->conf
, CONF_blink_cur
);
1351 term
->blinktext
= conf_get_int(term
->conf
, CONF_blinktext
);
1352 term
->cjk_ambig_wide
= conf_get_int(term
->conf
, CONF_cjk_ambig_wide
);
1353 term
->conf_height
= conf_get_int(term
->conf
, CONF_height
);
1354 term
->conf_width
= conf_get_int(term
->conf
, CONF_width
);
1355 term
->crhaslf
= conf_get_int(term
->conf
, CONF_crhaslf
);
1356 term
->erase_to_scrollback
= conf_get_int(term
->conf
, CONF_erase_to_scrollback
);
1357 term
->funky_type
= conf_get_int(term
->conf
, CONF_funky_type
);
1358 term
->lfhascr
= conf_get_int(term
->conf
, CONF_lfhascr
);
1359 term
->logflush
= conf_get_int(term
->conf
, CONF_logflush
);
1360 term
->logtype
= conf_get_int(term
->conf
, CONF_logtype
);
1361 term
->mouse_override
= conf_get_int(term
->conf
, CONF_mouse_override
);
1362 term
->nethack_keypad
= conf_get_int(term
->conf
, CONF_nethack_keypad
);
1363 term
->no_alt_screen
= conf_get_int(term
->conf
, CONF_no_alt_screen
);
1364 term
->no_applic_c
= conf_get_int(term
->conf
, CONF_no_applic_c
);
1365 term
->no_applic_k
= conf_get_int(term
->conf
, CONF_no_applic_k
);
1366 term
->no_dbackspace
= conf_get_int(term
->conf
, CONF_no_dbackspace
);
1367 term
->no_mouse_rep
= conf_get_int(term
->conf
, CONF_no_mouse_rep
);
1368 term
->no_remote_charset
= conf_get_int(term
->conf
, CONF_no_remote_charset
);
1369 term
->no_remote_resize
= conf_get_int(term
->conf
, CONF_no_remote_resize
);
1370 term
->no_remote_wintitle
= conf_get_int(term
->conf
, CONF_no_remote_wintitle
);
1371 term
->rawcnp
= conf_get_int(term
->conf
, CONF_rawcnp
);
1372 term
->rect_select
= conf_get_int(term
->conf
, CONF_rect_select
);
1373 term
->remote_qtitle_action
= conf_get_int(term
->conf
, CONF_remote_qtitle_action
);
1374 term
->rxvt_homeend
= conf_get_int(term
->conf
, CONF_rxvt_homeend
);
1375 term
->scroll_on_disp
= conf_get_int(term
->conf
, CONF_scroll_on_disp
);
1376 term
->scroll_on_key
= conf_get_int(term
->conf
, CONF_scroll_on_key
);
1377 term
->xterm_256_colour
= conf_get_int(term
->conf
, CONF_xterm_256_colour
);
1380 * Parse the control-character escapes in the configured
1381 * answerback string.
1384 char *answerback
= conf_get_str(term
->conf
, CONF_answerback
);
1385 int maxlen
= strlen(answerback
);
1387 term
->answerback
= snewn(maxlen
, char);
1388 term
->answerbacklen
= 0;
1390 while (*answerback
) {
1392 char c
= ctrlparse(answerback
, &n
);
1394 term
->answerback
[term
->answerbacklen
++] = c
;
1397 term
->answerback
[term
->answerbacklen
++] = *answerback
++;
1404 * When the user reconfigures us, we need to check the forbidden-
1405 * alternate-screen config option, disable raw mouse mode if the
1406 * user has disabled mouse reporting, and abandon a print job if
1407 * the user has disabled printing.
1409 void term_reconfig(Terminal
*term
, Conf
*conf
)
1412 * Before adopting the new config, check all those terminal
1413 * settings which control power-on defaults; and if they've
1414 * changed, we will modify the current state as well as the
1415 * default one. The full list is: Auto wrap mode, DEC Origin
1416 * Mode, BCE, blinking text, character classes.
1418 int reset_wrap
, reset_decom
, reset_bce
, reset_tblink
, reset_charclass
;
1421 reset_wrap
= (conf_get_int(term
->conf
, CONF_wrap_mode
) !=
1422 conf_get_int(conf
, CONF_wrap_mode
));
1423 reset_decom
= (conf_get_int(term
->conf
, CONF_dec_om
) !=
1424 conf_get_int(conf
, CONF_dec_om
));
1425 reset_bce
= (conf_get_int(term
->conf
, CONF_bce
) !=
1426 conf_get_int(conf
, CONF_bce
));
1427 reset_tblink
= (conf_get_int(term
->conf
, CONF_blinktext
) !=
1428 conf_get_int(conf
, CONF_blinktext
));
1429 reset_charclass
= 0;
1430 for (i
= 0; i
< 256; i
++)
1431 if (conf_get_int_int(term
->conf
, CONF_wordness
, i
) !=
1432 conf_get_int_int(conf
, CONF_wordness
, i
))
1433 reset_charclass
= 1;
1436 * If the bidi or shaping settings have changed, flush the bidi
1439 if (conf_get_int(term
->conf
, CONF_arabicshaping
) !=
1440 conf_get_int(conf
, CONF_arabicshaping
) ||
1441 conf_get_int(term
->conf
, CONF_bidi
) !=
1442 conf_get_int(conf
, CONF_bidi
)) {
1443 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1444 sfree(term
->pre_bidi_cache
[i
].chars
);
1445 sfree(term
->post_bidi_cache
[i
].chars
);
1446 term
->pre_bidi_cache
[i
].width
= -1;
1447 term
->pre_bidi_cache
[i
].chars
= NULL
;
1448 term
->post_bidi_cache
[i
].width
= -1;
1449 term
->post_bidi_cache
[i
].chars
= NULL
;
1453 conf_free(term
->conf
);
1454 term
->conf
= conf_copy(conf
);
1457 term
->alt_wrap
= term
->wrap
= conf_get_int(term
->conf
, CONF_wrap_mode
);
1459 term
->alt_om
= term
->dec_om
= conf_get_int(term
->conf
, CONF_dec_om
);
1461 term
->use_bce
= conf_get_int(term
->conf
, CONF_bce
);
1462 set_erase_char(term
);
1465 term
->blink_is_real
= conf_get_int(term
->conf
, CONF_blinktext
);
1467 if (reset_charclass
)
1468 for (i
= 0; i
< 256; i
++)
1469 term
->wordness
[i
] = conf_get_int_int(term
->conf
, CONF_wordness
, i
);
1471 if (conf_get_int(term
->conf
, CONF_no_alt_screen
))
1472 swap_screen(term
, 0, FALSE
, FALSE
);
1473 if (conf_get_int(term
->conf
, CONF_no_mouse_rep
)) {
1474 term
->xterm_mouse
= 0;
1475 set_raw_mouse_mode(term
->frontend
, 0);
1477 if (conf_get_int(term
->conf
, CONF_no_remote_charset
)) {
1478 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
1479 term
->sco_acs
= term
->alt_sco_acs
= 0;
1482 if (!conf_get_str(term
->conf
, CONF_printer
)) {
1483 term_print_finish(term
);
1485 term_schedule_tblink(term
);
1486 term_schedule_cblink(term
);
1487 term_copy_stuff_from_conf(term
);
1491 * Clear the scrollback.
1493 void term_clrsb(Terminal
*term
)
1495 unsigned char *line
;
1497 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
1498 sfree(line
); /* this is compressed data, not a termline */
1500 term
->tempsblines
= 0;
1501 term
->alt_sblines
= 0;
1506 * Initialise the terminal.
1508 Terminal
*term_init(Conf
*myconf
, struct unicode_data
*ucsdata
,
1514 * Allocate a new Terminal structure and initialise the fields
1517 term
= snew(Terminal
);
1518 term
->frontend
= frontend
;
1519 term
->ucsdata
= ucsdata
;
1520 term
->conf
= conf_copy(myconf
);
1521 term
->logctx
= NULL
;
1522 term
->compatibility_level
= TM_PUTTY
;
1523 strcpy(term
->id_string
, "\033[?6c");
1524 term
->cblink_pending
= term
->tblink_pending
= FALSE
;
1525 term
->paste_buffer
= NULL
;
1526 term
->paste_len
= 0;
1527 term
->last_paste
= 0;
1528 bufchain_init(&term
->inbuf
);
1529 bufchain_init(&term
->printer_buf
);
1530 term
->printing
= term
->only_printing
= FALSE
;
1531 term
->print_job
= NULL
;
1532 term
->vt52_mode
= FALSE
;
1533 term
->cr_lf_return
= FALSE
;
1534 term
->seen_disp_event
= FALSE
;
1535 term
->mouse_is_down
= FALSE
;
1536 term
->reset_132
= FALSE
;
1537 term
->cblinker
= term
->tblinker
= 0;
1538 term
->has_focus
= 1;
1539 term
->repeat_off
= FALSE
;
1540 term
->termstate
= TOPLEVEL
;
1541 term
->selstate
= NO_SELECTION
;
1544 term_copy_stuff_from_conf(term
);
1546 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
1547 term
->tempsblines
= 0;
1548 term
->alt_sblines
= 0;
1550 term
->disptext
= NULL
;
1551 term
->dispcursx
= term
->dispcursy
= -1;
1554 term
->rows
= term
->cols
= -1;
1555 power_on(term
, TRUE
);
1556 term
->beephead
= term
->beeptail
= NULL
;
1557 #ifdef OPTIMISE_SCROLL
1558 term
->scrollhead
= term
->scrolltail
= NULL
;
1559 #endif /* OPTIMISE_SCROLL */
1561 term
->lastbeep
= FALSE
;
1562 term
->beep_overloaded
= FALSE
;
1563 term
->attr_mask
= 0xffffffff;
1564 term
->resize_fn
= NULL
;
1565 term
->resize_ctx
= NULL
;
1566 term
->in_term_out
= FALSE
;
1568 term
->ltemp_size
= 0;
1569 term
->wcFrom
= NULL
;
1571 term
->wcFromTo_size
= 0;
1573 term
->window_update_pending
= FALSE
;
1575 term
->bidi_cache_size
= 0;
1576 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
1579 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
1580 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
1581 term
->basic_erase_char
.cc_next
= 0;
1582 term
->erase_char
= term
->basic_erase_char
;
1587 void term_free(Terminal
*term
)
1590 struct beeptime
*beep
;
1593 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
1594 sfree(line
); /* compressed data, not a termline */
1595 freetree234(term
->scrollback
);
1596 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
1598 freetree234(term
->screen
);
1599 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
1601 freetree234(term
->alt_screen
);
1602 if (term
->disptext
) {
1603 for (i
= 0; i
< term
->rows
; i
++)
1604 freeline(term
->disptext
[i
]);
1606 sfree(term
->disptext
);
1607 while (term
->beephead
) {
1608 beep
= term
->beephead
;
1609 term
->beephead
= beep
->next
;
1612 bufchain_clear(&term
->inbuf
);
1614 printer_finish_job(term
->print_job
);
1615 bufchain_clear(&term
->printer_buf
);
1616 sfree(term
->paste_buffer
);
1618 sfree(term
->wcFrom
);
1621 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1622 sfree(term
->pre_bidi_cache
[i
].chars
);
1623 sfree(term
->post_bidi_cache
[i
].chars
);
1624 sfree(term
->post_bidi_cache
[i
].forward
);
1625 sfree(term
->post_bidi_cache
[i
].backward
);
1627 sfree(term
->pre_bidi_cache
);
1628 sfree(term
->post_bidi_cache
);
1632 expire_timer_context(term
);
1634 conf_free(term
->conf
);
1640 * Set up the terminal for a given size.
1642 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1645 termline
**newdisp
, *line
;
1646 int i
, j
, oldrows
= term
->rows
;
1648 int save_alt_which
= term
->alt_which
;
1650 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1651 newsavelines
== term
->savelines
)
1652 return; /* nothing to do */
1654 /* Behave sensibly if we're given zero (or negative) rows/cols */
1656 if (newrows
< 1) newrows
= 1;
1657 if (newcols
< 1) newcols
= 1;
1660 swap_screen(term
, 0, FALSE
, FALSE
);
1662 term
->alt_t
= term
->marg_t
= 0;
1663 term
->alt_b
= term
->marg_b
= newrows
- 1;
1665 if (term
->rows
== -1) {
1666 term
->scrollback
= newtree234(NULL
);
1667 term
->screen
= newtree234(NULL
);
1668 term
->tempsblines
= 0;
1673 * Resize the screen and scrollback. We only need to shift
1674 * lines around within our data structures, because lineptr()
1675 * will take care of resizing each individual line if
1678 * - If the new screen is longer, we shunt lines in from temporary
1679 * scrollback if possible, otherwise we add new blank lines at
1682 * - If the new screen is shorter, we remove any blank lines at
1683 * the bottom if possible, otherwise shunt lines above the cursor
1684 * to scrollback if possible, otherwise delete lines below the
1687 * - Then, if the new scrollback length is less than the
1688 * amount of scrollback we actually have, we must throw some
1691 sblen
= count234(term
->scrollback
);
1692 /* Do this loop to expand the screen if newrows > rows */
1693 assert(term
->rows
== count234(term
->screen
));
1694 while (term
->rows
< newrows
) {
1695 if (term
->tempsblines
> 0) {
1696 unsigned char *cline
;
1697 /* Insert a line from the scrollback at the top of the screen. */
1698 assert(sblen
>= term
->tempsblines
);
1699 cline
= delpos234(term
->scrollback
, --sblen
);
1700 line
= decompressline(cline
, NULL
);
1702 line
->temporary
= FALSE
; /* reconstituted line is now real */
1703 term
->tempsblines
-= 1;
1704 addpos234(term
->screen
, line
, 0);
1706 term
->savecurs
.y
+= 1;
1708 term
->alt_savecurs
.y
+= 1;
1710 /* Add a new blank line at the bottom of the screen. */
1711 line
= newline(term
, newcols
, FALSE
);
1712 addpos234(term
->screen
, line
, count234(term
->screen
));
1716 /* Do this loop to shrink the screen if newrows < rows */
1717 while (term
->rows
> newrows
) {
1718 if (term
->curs
.y
< term
->rows
- 1) {
1719 /* delete bottom row, unless it contains the cursor */
1720 line
= delpos234(term
->screen
, term
->rows
- 1);
1723 /* push top row to scrollback */
1724 line
= delpos234(term
->screen
, 0);
1725 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1727 term
->tempsblines
+= 1;
1729 term
->savecurs
.y
-= 1;
1731 term
->alt_savecurs
.y
-= 1;
1735 assert(term
->rows
== newrows
);
1736 assert(count234(term
->screen
) == newrows
);
1738 /* Delete any excess lines from the scrollback. */
1739 while (sblen
> newsavelines
) {
1740 line
= delpos234(term
->scrollback
, 0);
1744 if (sblen
< term
->tempsblines
)
1745 term
->tempsblines
= sblen
;
1746 assert(count234(term
->scrollback
) <= newsavelines
);
1747 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1750 /* Make a new displayed text buffer. */
1751 newdisp
= snewn(newrows
, termline
*);
1752 for (i
= 0; i
< newrows
; i
++) {
1753 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1754 for (j
= 0; j
< newcols
; j
++)
1755 newdisp
[i
]->chars
[j
].attr
= ATTR_INVALID
;
1757 if (term
->disptext
) {
1758 for (i
= 0; i
< oldrows
; i
++)
1759 freeline(term
->disptext
[i
]);
1761 sfree(term
->disptext
);
1762 term
->disptext
= newdisp
;
1763 term
->dispcursx
= term
->dispcursy
= -1;
1765 /* Make a new alternate screen. */
1766 newalt
= newtree234(NULL
);
1767 for (i
= 0; i
< newrows
; i
++) {
1768 line
= newline(term
, newcols
, TRUE
);
1769 addpos234(newalt
, line
, i
);
1771 if (term
->alt_screen
) {
1772 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1774 freetree234(term
->alt_screen
);
1776 term
->alt_screen
= newalt
;
1777 term
->alt_sblines
= 0;
1779 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1782 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1783 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1786 /* Check that the cursor positions are still valid. */
1787 if (term
->savecurs
.y
< 0)
1788 term
->savecurs
.y
= 0;
1789 if (term
->savecurs
.y
>= newrows
)
1790 term
->savecurs
.y
= newrows
- 1;
1791 if (term
->savecurs
.x
>= newcols
)
1792 term
->savecurs
.x
= newcols
- 1;
1793 if (term
->alt_savecurs
.y
< 0)
1794 term
->alt_savecurs
.y
= 0;
1795 if (term
->alt_savecurs
.y
>= newrows
)
1796 term
->alt_savecurs
.y
= newrows
- 1;
1797 if (term
->alt_savecurs
.x
>= newcols
)
1798 term
->alt_savecurs
.x
= newcols
- 1;
1799 if (term
->curs
.y
< 0)
1801 if (term
->curs
.y
>= newrows
)
1802 term
->curs
.y
= newrows
- 1;
1803 if (term
->curs
.x
>= newcols
)
1804 term
->curs
.x
= newcols
- 1;
1805 if (term
->alt_y
< 0)
1807 if (term
->alt_y
>= newrows
)
1808 term
->alt_y
= newrows
- 1;
1809 if (term
->alt_x
>= newcols
)
1810 term
->alt_x
= newcols
- 1;
1811 term
->alt_x
= term
->alt_y
= 0;
1812 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1814 term
->rows
= newrows
;
1815 term
->cols
= newcols
;
1816 term
->savelines
= newsavelines
;
1818 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1822 if (term
->resize_fn
)
1823 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1827 * Hand a function and context pointer to the terminal which it can
1828 * use to notify a back end of resizes.
1830 void term_provide_resize_fn(Terminal
*term
,
1831 void (*resize_fn
)(void *, int, int),
1834 term
->resize_fn
= resize_fn
;
1835 term
->resize_ctx
= resize_ctx
;
1836 if (resize_fn
&& term
->cols
> 0 && term
->rows
> 0)
1837 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1840 /* Find the bottom line on the screen that has any content.
1841 * If only the top line has content, returns 0.
1842 * If no lines have content, return -1.
1844 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1847 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1848 termline
*line
= index234(screen
, i
);
1850 for (j
= 0; j
< line
->cols
; j
++)
1851 if (!termchars_equal(&line
->chars
[j
], &term
->erase_char
))
1853 if (j
!= line
->cols
) break;
1859 * Swap screens. If `reset' is TRUE and we have been asked to
1860 * switch to the alternate screen, we must bring most of its
1861 * configuration from the main screen and erase the contents of the
1862 * alternate screen completely. (This is even true if we're already
1863 * on it! Blame xterm.)
1865 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1872 reset
= FALSE
; /* do no weird resetting if which==0 */
1874 if (which
!= term
->alt_which
) {
1875 term
->alt_which
= which
;
1877 ttr
= term
->alt_screen
;
1878 term
->alt_screen
= term
->screen
;
1880 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1882 if (!reset
&& !keep_cur_pos
)
1883 term
->curs
.x
= term
->alt_x
;
1886 if (!reset
&& !keep_cur_pos
)
1887 term
->curs
.y
= term
->alt_y
;
1890 if (!reset
) term
->marg_t
= term
->alt_t
;
1893 if (!reset
) term
->marg_b
= term
->alt_b
;
1896 if (!reset
) term
->dec_om
= term
->alt_om
;
1899 if (!reset
) term
->wrap
= term
->alt_wrap
;
1902 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1903 term
->alt_wnext
= t
;
1905 if (!reset
) term
->insert
= term
->alt_ins
;
1908 if (!reset
) term
->cset
= term
->alt_cset
;
1911 if (!reset
) term
->utf
= term
->alt_utf
;
1914 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1915 term
->alt_sco_acs
= t
;
1917 tp
= term
->savecurs
;
1918 if (!reset
&& !keep_cur_pos
)
1919 term
->savecurs
= term
->alt_savecurs
;
1920 term
->alt_savecurs
= tp
;
1921 t
= term
->save_cset
;
1922 if (!reset
&& !keep_cur_pos
)
1923 term
->save_cset
= term
->alt_save_cset
;
1924 term
->alt_save_cset
= t
;
1925 t
= term
->save_csattr
;
1926 if (!reset
&& !keep_cur_pos
)
1927 term
->save_csattr
= term
->alt_save_csattr
;
1928 term
->alt_save_csattr
= t
;
1929 t
= term
->save_attr
;
1930 if (!reset
&& !keep_cur_pos
)
1931 term
->save_attr
= term
->alt_save_attr
;
1932 term
->alt_save_attr
= t
;
1934 if (!reset
&& !keep_cur_pos
)
1935 term
->save_utf
= term
->alt_save_utf
;
1936 term
->alt_save_utf
= t
;
1937 t
= term
->save_wnext
;
1938 if (!reset
&& !keep_cur_pos
)
1939 term
->save_wnext
= term
->alt_save_wnext
;
1940 term
->alt_save_wnext
= t
;
1941 t
= term
->save_sco_acs
;
1942 if (!reset
&& !keep_cur_pos
)
1943 term
->save_sco_acs
= term
->alt_save_sco_acs
;
1944 term
->alt_save_sco_acs
= t
;
1947 if (reset
&& term
->screen
) {
1949 * Yes, this _is_ supposed to honour background-colour-erase.
1951 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1956 * Update the scroll bar.
1958 static void update_sbar(Terminal
*term
)
1960 int nscroll
= sblines(term
);
1961 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1962 nscroll
+ term
->disptop
, term
->rows
);
1966 * Check whether the region bounded by the two pointers intersects
1967 * the scroll region, and de-select the on-screen selection if so.
1969 static void check_selection(Terminal
*term
, pos from
, pos to
)
1971 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1976 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1977 * for backward.) `sb' is TRUE if the scrolling is permitted to
1978 * affect the scrollback buffer.
1980 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1983 int i
, seltop
, scrollwinsize
;
1984 #ifdef OPTIMISE_SCROLL
1985 int olddisptop
, shift
;
1986 #endif /* OPTIMISE_SCROLL */
1988 if (topline
!= 0 || term
->alt_which
!= 0)
1991 #ifdef OPTIMISE_SCROLL
1992 olddisptop
= term
->disptop
;
1994 #endif /* OPTIMISE_SCROLL */
1996 scrollwinsize
= botline
- topline
+ 1;
2000 if (lines
> scrollwinsize
)
2001 lines
= scrollwinsize
;
2002 while (lines
-- > 0) {
2003 line
= delpos234(term
->screen
, botline
);
2004 resizeline(term
, line
, term
->cols
);
2005 for (i
= 0; i
< term
->cols
; i
++)
2006 copy_termchar(line
, i
, &term
->erase_char
);
2007 line
->lattr
= LATTR_NORM
;
2008 addpos234(term
->screen
, line
, topline
);
2010 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
2012 if (term
->selstart
.y
> botline
) {
2013 term
->selstart
.y
= botline
+ 1;
2014 term
->selstart
.x
= 0;
2017 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
2019 if (term
->selend
.y
> botline
) {
2020 term
->selend
.y
= botline
+ 1;
2026 if (lines
> scrollwinsize
)
2027 lines
= scrollwinsize
;
2028 while (lines
-- > 0) {
2029 line
= delpos234(term
->screen
, topline
);
2030 #ifdef TERM_CC_DIAGS
2033 if (sb
&& term
->savelines
> 0) {
2034 int sblen
= count234(term
->scrollback
);
2036 * We must add this line to the scrollback. We'll
2037 * remove a line from the top of the scrollback if
2038 * the scrollback is full.
2040 if (sblen
== term
->savelines
) {
2041 unsigned char *cline
;
2044 cline
= delpos234(term
->scrollback
, 0);
2047 term
->tempsblines
+= 1;
2049 addpos234(term
->scrollback
, compressline(line
), sblen
);
2051 /* now `line' itself can be reused as the bottom line */
2054 * If the user is currently looking at part of the
2055 * scrollback, and they haven't enabled any options
2056 * that are going to reset the scrollback as a
2057 * result of this movement, then the chances are
2058 * they'd like to keep looking at the same line. So
2059 * we move their viewpoint at the same rate as the
2060 * scroll, at least until their viewpoint hits the
2061 * top end of the scrollback buffer, at which point
2062 * we don't have the choice any more.
2064 * Thanks to Jan Holmen Holsten for the idea and
2065 * initial implementation.
2067 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
2070 resizeline(term
, line
, term
->cols
);
2071 for (i
= 0; i
< term
->cols
; i
++)
2072 copy_termchar(line
, i
, &term
->erase_char
);
2073 line
->lattr
= LATTR_NORM
;
2074 addpos234(term
->screen
, line
, botline
);
2077 * If the selection endpoints move into the scrollback,
2078 * we keep them moving until they hit the top. However,
2079 * of course, if the line _hasn't_ moved into the
2080 * scrollback then we don't do this, and cut them off
2081 * at the top of the scroll region.
2083 * This applies to selstart and selend (for an existing
2084 * selection), and also selanchor (for one being
2085 * selected as we speak).
2087 seltop
= sb ?
-term
->savelines
: topline
;
2089 if (term
->selstate
!= NO_SELECTION
) {
2090 if (term
->selstart
.y
>= seltop
&&
2091 term
->selstart
.y
<= botline
) {
2093 if (term
->selstart
.y
< seltop
) {
2094 term
->selstart
.y
= seltop
;
2095 term
->selstart
.x
= 0;
2098 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
2100 if (term
->selend
.y
< seltop
) {
2101 term
->selend
.y
= seltop
;
2105 if (term
->selanchor
.y
>= seltop
&&
2106 term
->selanchor
.y
<= botline
) {
2107 term
->selanchor
.y
--;
2108 if (term
->selanchor
.y
< seltop
) {
2109 term
->selanchor
.y
= seltop
;
2110 term
->selanchor
.x
= 0;
2116 #ifdef OPTIMISE_SCROLL
2117 shift
+= term
->disptop
- olddisptop
;
2118 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
2119 scroll_display(term
, topline
, botline
, shift
);
2120 #endif /* OPTIMISE_SCROLL */
2123 #ifdef OPTIMISE_SCROLL
2125 * Add a scroll of a region on the screen into the pending scroll list.
2126 * `lines' is +ve for scrolling forward, -ve for backward.
2128 * If the scroll is on the same area as the last scroll in the list,
2131 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
2133 struct scrollregion
*newscroll
;
2134 if (term
->scrolltail
&&
2135 term
->scrolltail
->topline
== topline
&&
2136 term
->scrolltail
->botline
== botline
) {
2137 term
->scrolltail
->lines
+= lines
;
2139 newscroll
= snew(struct scrollregion
);
2140 newscroll
->topline
= topline
;
2141 newscroll
->botline
= botline
;
2142 newscroll
->lines
= lines
;
2143 newscroll
->next
= NULL
;
2145 if (!term
->scrollhead
)
2146 term
->scrollhead
= newscroll
;
2148 term
->scrolltail
->next
= newscroll
;
2149 term
->scrolltail
= newscroll
;
2154 * Scroll the physical display, and our conception of it in disptext.
2156 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
2158 int distance
, nlines
, i
, j
;
2160 distance
= lines
> 0 ? lines
: -lines
;
2161 nlines
= botline
- topline
+ 1 - distance
;
2163 for (i
= 0; i
< nlines
; i
++)
2164 for (j
= 0; j
< term
->cols
; j
++)
2165 copy_termchar(term
->disptext
[i
], j
,
2166 term
->disptext
[i
+distance
]->chars
+j
);
2167 if (term
->dispcursy
>= 0 &&
2168 term
->dispcursy
>= topline
+ distance
&&
2169 term
->dispcursy
< topline
+ distance
+ nlines
)
2170 term
->dispcursy
-= distance
;
2171 for (i
= 0; i
< distance
; i
++)
2172 for (j
= 0; j
< term
->cols
; j
++)
2173 term
->disptext
[nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
2175 for (i
= nlines
; i
-- ;)
2176 for (j
= 0; j
< term
->cols
; j
++)
2177 copy_termchar(term
->disptext
[i
+distance
], j
,
2178 term
->disptext
[i
]->chars
+j
);
2179 if (term
->dispcursy
>= 0 &&
2180 term
->dispcursy
>= topline
&&
2181 term
->dispcursy
< topline
+ nlines
)
2182 term
->dispcursy
+= distance
;
2183 for (i
= 0; i
< distance
; i
++)
2184 for (j
= 0; j
< term
->cols
; j
++)
2185 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
2187 save_scroll(term
, topline
, botline
, lines
);
2189 #endif /* OPTIMISE_SCROLL */
2192 * Move the cursor to a given position, clipping at boundaries. We
2193 * may or may not want to clip at the scroll margin: marg_clip is 0
2194 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2195 * even _being_ outside the margins.
2197 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
2201 if (x
>= term
->cols
)
2204 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
2207 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
2213 if (y
>= term
->rows
)
2217 term
->wrapnext
= FALSE
;
2221 * Save or restore the cursor and SGR mode.
2223 static void save_cursor(Terminal
*term
, int save
)
2226 term
->savecurs
= term
->curs
;
2227 term
->save_attr
= term
->curr_attr
;
2228 term
->save_cset
= term
->cset
;
2229 term
->save_utf
= term
->utf
;
2230 term
->save_wnext
= term
->wrapnext
;
2231 term
->save_csattr
= term
->cset_attr
[term
->cset
];
2232 term
->save_sco_acs
= term
->sco_acs
;
2234 term
->curs
= term
->savecurs
;
2235 /* Make sure the window hasn't shrunk since the save */
2236 if (term
->curs
.x
>= term
->cols
)
2237 term
->curs
.x
= term
->cols
- 1;
2238 if (term
->curs
.y
>= term
->rows
)
2239 term
->curs
.y
= term
->rows
- 1;
2241 term
->curr_attr
= term
->save_attr
;
2242 term
->cset
= term
->save_cset
;
2243 term
->utf
= term
->save_utf
;
2244 term
->wrapnext
= term
->save_wnext
;
2246 * wrapnext might reset to False if the x position is no
2247 * longer at the rightmost edge.
2249 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
2250 term
->wrapnext
= FALSE
;
2251 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
2252 term
->sco_acs
= term
->save_sco_acs
;
2253 set_erase_char(term
);
2258 * This function is called before doing _anything_ which affects
2259 * only part of a line of text. It is used to mark the boundary
2260 * between two character positions, and it indicates that some sort
2261 * of effect is going to happen on only one side of that boundary.
2263 * The effect of this function is to check whether a CJK
2264 * double-width character is straddling the boundary, and to remove
2265 * it and replace it with two spaces if so. (Of course, one or
2266 * other of those spaces is then likely to be replaced with
2267 * something else again, as a result of whatever happens next.)
2269 * Also, if the boundary is at the right-hand _edge_ of the screen,
2270 * it implies something deliberate is being done to the rightmost
2271 * column position; hence we must clear LATTR_WRAPPED2.
2273 * The input to the function is the coordinates of the _second_
2274 * character of the pair.
2276 static void check_boundary(Terminal
*term
, int x
, int y
)
2280 /* Validate input coordinates, just in case. */
2281 if (x
== 0 || x
> term
->cols
)
2284 ldata
= scrlineptr(y
);
2285 if (x
== term
->cols
) {
2286 ldata
->lattr
&= ~LATTR_WRAPPED2
;
2288 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
2289 clear_cc(ldata
, x
-1);
2291 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
2292 ldata
->chars
[x
] = ldata
->chars
[x
-1];
2298 * Erase a large portion of the screen: the whole screen, or the
2299 * whole line, or parts thereof.
2301 static void erase_lots(Terminal
*term
,
2302 int line_only
, int from_begin
, int to_end
)
2306 int erasing_lines_from_top
= 0;
2309 start
.y
= term
->curs
.y
;
2311 end
.y
= term
->curs
.y
+ 1;
2313 erase_lattr
= FALSE
;
2328 if (!from_begin
|| !to_end
)
2329 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2330 check_selection(term
, start
, end
);
2332 /* Clear screen also forces a full window redraw, just in case. */
2333 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
2334 term_invalidate(term
);
2336 /* Lines scrolled away shouldn't be brought back on if the terminal
2338 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
2339 erasing_lines_from_top
= 1;
2341 if (term
->erase_to_scrollback
&& erasing_lines_from_top
) {
2342 /* If it's a whole number of lines, starting at the top, and
2343 * we're fully erasing them, erase by scrolling and keep the
2344 * lines in the scrollback. */
2345 int scrolllines
= end
.y
;
2346 if (end
.y
== term
->rows
) {
2347 /* Shrink until we find a non-empty row.*/
2348 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
2350 if (scrolllines
> 0)
2351 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
2353 termline
*ldata
= scrlineptr(start
.y
);
2354 while (poslt(start
, end
)) {
2355 if (start
.x
== term
->cols
) {
2357 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
2359 ldata
->lattr
= LATTR_NORM
;
2361 copy_termchar(ldata
, start
.x
, &term
->erase_char
);
2363 if (incpos(start
) && start
.y
< term
->rows
) {
2364 ldata
= scrlineptr(start
.y
);
2369 /* After an erase of lines from the top of the screen, we shouldn't
2370 * bring the lines back again if the terminal enlarges (since the user or
2371 * application has explictly thrown them away). */
2372 if (erasing_lines_from_top
&& !(term
->alt_which
))
2373 term
->tempsblines
= 0;
2377 * Insert or delete characters within the current line. n is +ve if
2378 * insertion is desired, and -ve for deletion.
2380 static void insch(Terminal
*term
, int n
)
2382 int dir
= (n
< 0 ?
-1 : +1);
2387 n
= (n
< 0 ?
-n
: n
);
2388 if (n
> term
->cols
- term
->curs
.x
)
2389 n
= term
->cols
- term
->curs
.x
;
2390 m
= term
->cols
- term
->curs
.x
- n
;
2391 cursplus
.y
= term
->curs
.y
;
2392 cursplus
.x
= term
->curs
.x
+ n
;
2393 check_selection(term
, term
->curs
, cursplus
);
2394 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2396 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
2397 ldata
= scrlineptr(term
->curs
.y
);
2399 for (j
= 0; j
< m
; j
++)
2400 move_termchar(ldata
,
2401 ldata
->chars
+ term
->curs
.x
+ j
,
2402 ldata
->chars
+ term
->curs
.x
+ j
+ n
);
2404 copy_termchar(ldata
, term
->curs
.x
+ m
++, &term
->erase_char
);
2407 move_termchar(ldata
,
2408 ldata
->chars
+ term
->curs
.x
+ j
+ n
,
2409 ldata
->chars
+ term
->curs
.x
+ j
);
2411 copy_termchar(ldata
, term
->curs
.x
+ n
, &term
->erase_char
);
2416 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2417 * whether the mode is a DEC private one or a normal one.)
2419 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
2423 case 1: /* DECCKM: application cursor keys */
2424 term
->app_cursor_keys
= state
;
2426 case 2: /* DECANM: VT52 mode */
2427 term
->vt52_mode
= !state
;
2428 if (term
->vt52_mode
) {
2429 term
->blink_is_real
= FALSE
;
2430 term
->vt52_bold
= FALSE
;
2432 term
->blink_is_real
= term
->blinktext
;
2434 term_schedule_tblink(term
);
2436 case 3: /* DECCOLM: 80/132 columns */
2438 if (!term
->no_remote_resize
)
2439 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
2440 term
->reset_132
= state
;
2441 term
->alt_t
= term
->marg_t
= 0;
2442 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
2443 move(term
, 0, 0, 0);
2444 erase_lots(term
, FALSE
, TRUE
, TRUE
);
2446 case 5: /* DECSCNM: reverse video */
2448 * Toggle reverse video. If we receive an OFF within the
2449 * visual bell timeout period after an ON, we trigger an
2450 * effective visual bell, so that ESC[?5hESC[?5l will
2451 * always be an actually _visible_ visual bell.
2453 if (term
->rvideo
&& !state
) {
2454 /* This is an OFF, so set up a vbell */
2455 term_schedule_vbell(term
, TRUE
, term
->rvbell_startpoint
);
2456 } else if (!term
->rvideo
&& state
) {
2457 /* This is an ON, so we notice the time and save it. */
2458 term
->rvbell_startpoint
= GETTICKCOUNT();
2460 term
->rvideo
= state
;
2461 seen_disp_event(term
);
2463 case 6: /* DECOM: DEC origin mode */
2464 term
->dec_om
= state
;
2466 case 7: /* DECAWM: auto wrap */
2469 case 8: /* DECARM: auto key repeat */
2470 term
->repeat_off
= !state
;
2472 case 10: /* DECEDM: set local edit mode */
2473 term
->term_editing
= state
;
2474 if (term
->ldisc
) /* cause ldisc to notice changes */
2475 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2477 case 25: /* DECTCEM: enable/disable cursor */
2478 compatibility2(OTHER
, VT220
);
2479 term
->cursor_on
= state
;
2480 seen_disp_event(term
);
2482 case 47: /* alternate screen */
2483 compatibility(OTHER
);
2485 swap_screen(term
, term
->no_alt_screen ?
0 : state
, FALSE
, FALSE
);
2488 case 1000: /* xterm mouse 1 (normal) */
2489 term
->xterm_mouse
= state ?
1 : 0;
2490 set_raw_mouse_mode(term
->frontend
, state
);
2492 case 1002: /* xterm mouse 2 (inc. button drags) */
2493 term
->xterm_mouse
= state ?
2 : 0;
2494 set_raw_mouse_mode(term
->frontend
, state
);
2496 case 1006: /* xterm extended mouse */
2497 term
->xterm_extended_mouse
= state ?
1 : 0;
2499 case 1015: /* urxvt extended mouse */
2500 term
->urxvt_extended_mouse
= state ?
1 : 0;
2502 case 1047: /* alternate screen */
2503 compatibility(OTHER
);
2505 swap_screen(term
, term
->no_alt_screen ?
0 : state
, TRUE
, TRUE
);
2508 case 1048: /* save/restore cursor */
2509 if (!term
->no_alt_screen
)
2510 save_cursor(term
, state
);
2511 if (!state
) seen_disp_event(term
);
2513 case 1049: /* cursor & alternate screen */
2514 if (state
&& !term
->no_alt_screen
)
2515 save_cursor(term
, state
);
2516 if (!state
) seen_disp_event(term
);
2517 compatibility(OTHER
);
2519 swap_screen(term
, term
->no_alt_screen ?
0 : state
, TRUE
, FALSE
);
2520 if (!state
&& !term
->no_alt_screen
)
2521 save_cursor(term
, state
);
2524 case 2004: /* xterm bracketed paste */
2525 term
->bracketed_paste
= state ? TRUE
: FALSE
;
2529 case 4: /* IRM: set insert mode */
2530 compatibility(VT102
);
2531 term
->insert
= state
;
2533 case 12: /* SRM: set echo mode */
2534 term
->term_echoing
= !state
;
2535 if (term
->ldisc
) /* cause ldisc to notice changes */
2536 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2538 case 20: /* LNM: Return sends ... */
2539 term
->cr_lf_return
= state
;
2541 case 34: /* WYULCURM: Make cursor BIG */
2542 compatibility2(OTHER
, VT220
);
2543 term
->big_cursor
= !state
;
2548 * Process an OSC sequence: set window title or icon name.
2550 static void do_osc(Terminal
*term
)
2553 while (term
->osc_strlen
--)
2554 term
->wordness
[(unsigned char)
2555 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
2557 term
->osc_string
[term
->osc_strlen
] = '\0';
2558 switch (term
->esc_args
[0]) {
2561 if (!term
->no_remote_wintitle
)
2562 set_icon(term
->frontend
, term
->osc_string
);
2563 if (term
->esc_args
[0] == 1)
2565 /* fall through: parameter 0 means set both */
2568 if (!term
->no_remote_wintitle
)
2569 set_title(term
->frontend
, term
->osc_string
);
2576 * ANSI printing routines.
2578 static void term_print_setup(Terminal
*term
, char *printer
)
2580 bufchain_clear(&term
->printer_buf
);
2581 term
->print_job
= printer_start_job(printer
);
2583 static void term_print_flush(Terminal
*term
)
2588 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
2589 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2592 printer_job_data(term
->print_job
, data
, len
);
2593 bufchain_consume(&term
->printer_buf
, len
);
2596 static void term_print_finish(Terminal
*term
)
2602 if (!term
->printing
&& !term
->only_printing
)
2603 return; /* we need do nothing */
2605 term_print_flush(term
);
2606 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
2607 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2609 if (c
== '\033' || c
== '\233') {
2610 bufchain_consume(&term
->printer_buf
, size
);
2613 printer_job_data(term
->print_job
, &c
, 1);
2614 bufchain_consume(&term
->printer_buf
, 1);
2617 printer_finish_job(term
->print_job
);
2618 term
->print_job
= NULL
;
2619 term
->printing
= term
->only_printing
= FALSE
;
2623 * Remove everything currently in `inbuf' and stick it up on the
2624 * in-memory display. There's a big state machine in here to
2625 * process escape sequences...
2627 static void term_out(Terminal
*term
)
2631 unsigned char localbuf
[256], *chars
;
2636 chars
= NULL
; /* placate compiler warnings */
2637 while (nchars
> 0 || unget
!= -1 || bufchain_size(&term
->inbuf
) > 0) {
2641 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
2642 if (nchars
> sizeof(localbuf
))
2643 nchars
= sizeof(localbuf
);
2644 memcpy(localbuf
, ret
, nchars
);
2645 bufchain_consume(&term
->inbuf
, nchars
);
2647 assert(chars
!= NULL
);
2653 * Optionally log the session traffic to a file. Useful for
2654 * debugging and possibly also useful for actual logging.
2656 if (term
->logtype
== LGTYP_DEBUG
&& term
->logctx
)
2657 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
2663 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2664 * be able to display 8-bit characters, but I'll let that go 'cause
2669 * If we're printing, add the character to the printer
2672 if (term
->printing
) {
2673 bufchain_add(&term
->printer_buf
, &c
, 1);
2676 * If we're in print-only mode, we use a much simpler
2677 * state machine designed only to recognise the ESC[4i
2678 * termination sequence.
2680 if (term
->only_printing
) {
2682 term
->print_state
= 1;
2683 else if (c
== (unsigned char)'\233')
2684 term
->print_state
= 2;
2685 else if (c
== '[' && term
->print_state
== 1)
2686 term
->print_state
= 2;
2687 else if (c
== '4' && term
->print_state
== 2)
2688 term
->print_state
= 3;
2689 else if (c
== 'i' && term
->print_state
== 3)
2690 term
->print_state
= 4;
2692 term
->print_state
= 0;
2693 if (term
->print_state
== 4) {
2694 term_print_finish(term
);
2700 /* First see about all those translations. */
2701 if (term
->termstate
== TOPLEVEL
) {
2703 switch (term
->utf_state
) {
2706 /* UTF-8 must be stateless so we ignore iso2022. */
2707 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2708 c
= term
->ucsdata
->unitab_ctrl
[c
];
2709 else c
= ((unsigned char)c
) | CSET_ASCII
;
2711 } else if ((c
& 0xe0) == 0xc0) {
2712 term
->utf_size
= term
->utf_state
= 1;
2713 term
->utf_char
= (c
& 0x1f);
2714 } else if ((c
& 0xf0) == 0xe0) {
2715 term
->utf_size
= term
->utf_state
= 2;
2716 term
->utf_char
= (c
& 0x0f);
2717 } else if ((c
& 0xf8) == 0xf0) {
2718 term
->utf_size
= term
->utf_state
= 3;
2719 term
->utf_char
= (c
& 0x07);
2720 } else if ((c
& 0xfc) == 0xf8) {
2721 term
->utf_size
= term
->utf_state
= 4;
2722 term
->utf_char
= (c
& 0x03);
2723 } else if ((c
& 0xfe) == 0xfc) {
2724 term
->utf_size
= term
->utf_state
= 5;
2725 term
->utf_char
= (c
& 0x01);
2736 if ((c
& 0xC0) != 0x80) {
2739 term
->utf_state
= 0;
2742 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2743 if (--term
->utf_state
)
2748 /* Is somebody trying to be evil! */
2750 (c
< 0x800 && term
->utf_size
>= 2) ||
2751 (c
< 0x10000 && term
->utf_size
>= 3) ||
2752 (c
< 0x200000 && term
->utf_size
>= 4) ||
2753 (c
< 0x4000000 && term
->utf_size
>= 5))
2756 /* Unicode line separator and paragraph separator are CR-LF */
2757 if (c
== 0x2028 || c
== 0x2029)
2760 /* High controls are probably a Baaad idea too. */
2764 /* The UTF-16 surrogates are not nice either. */
2765 /* The standard give the option of decoding these:
2766 * I don't want to! */
2767 if (c
>= 0xD800 && c
< 0xE000)
2770 /* ISO 10646 characters now limited to UTF-16 range. */
2774 /* This is currently a TagPhobic application.. */
2775 if (c
>= 0xE0000 && c
<= 0xE007F)
2778 /* U+FEFF is best seen as a null. */
2781 /* But U+FFFE is an error. */
2782 if (c
== 0xFFFE || c
== 0xFFFF)
2787 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2788 else if(term
->sco_acs
&&
2789 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2791 if (term
->sco_acs
== 2) c
|= 0x80;
2794 switch (term
->cset_attr
[term
->cset
]) {
2796 * Linedraw characters are different from 'ESC ( B'
2797 * only for a small range. For ones outside that
2798 * range, make sure we use the same font as well as
2799 * the same encoding.
2802 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2803 c
= term
->ucsdata
->unitab_ctrl
[c
];
2805 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2809 /* If UK-ASCII, make the '#' a LineDraw Pound */
2811 c
= '}' | CSET_LINEDRW
;
2814 /*FALLTHROUGH*/ case CSET_ASCII
:
2815 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2816 c
= term
->ucsdata
->unitab_ctrl
[c
];
2818 c
= ((unsigned char) c
) | CSET_ASCII
;
2821 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2828 * How about C1 controls?
2829 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2831 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2832 !term
->vt52_mode
&& has_compat(VT220
)) {
2836 term
->termstate
= SEEN_ESC
;
2837 term
->esc_query
= FALSE
;
2838 c
= '@' + (c
& 0x1F);
2842 /* Or the GL control. */
2843 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2844 if (term
->curs
.x
&& !term
->wrapnext
)
2846 term
->wrapnext
= FALSE
;
2847 /* destructive backspace might be disabled */
2848 if (!term
->no_dbackspace
) {
2849 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2850 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2851 copy_termchar(scrlineptr(term
->curs
.y
),
2852 term
->curs
.x
, &term
->erase_char
);
2855 /* Or normal C0 controls. */
2856 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2858 case '\005': /* ENQ: terminal type query */
2860 * Strictly speaking this is VT100 but a VT100 defaults to
2861 * no response. Other terminals respond at their option.
2863 * Don't put a CR in the default string as this tends to
2864 * upset some weird software.
2866 compatibility(ANSIMIN
);
2868 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2869 term
->answerback
, term
->answerbacklen
, 0);
2872 case '\007': /* BEL: Bell */
2874 struct beeptime
*newbeep
;
2875 unsigned long ticks
;
2877 ticks
= GETTICKCOUNT();
2879 if (!term
->beep_overloaded
) {
2880 newbeep
= snew(struct beeptime
);
2881 newbeep
->ticks
= ticks
;
2882 newbeep
->next
= NULL
;
2883 if (!term
->beephead
)
2884 term
->beephead
= newbeep
;
2886 term
->beeptail
->next
= newbeep
;
2887 term
->beeptail
= newbeep
;
2892 * Throw out any beeps that happened more than
2895 while (term
->beephead
&&
2896 term
->beephead
->ticks
< ticks
- term
->bellovl_t
) {
2897 struct beeptime
*tmp
= term
->beephead
;
2898 term
->beephead
= tmp
->next
;
2900 if (!term
->beephead
)
2901 term
->beeptail
= NULL
;
2905 if (term
->bellovl
&& term
->beep_overloaded
&&
2906 ticks
- term
->lastbeep
>= (unsigned)term
->bellovl_s
) {
2908 * If we're currently overloaded and the
2909 * last beep was more than s seconds ago,
2910 * leave overload mode.
2912 term
->beep_overloaded
= FALSE
;
2913 } else if (term
->bellovl
&& !term
->beep_overloaded
&&
2914 term
->nbeeps
>= term
->bellovl_n
) {
2916 * Now, if we have n or more beeps
2917 * remaining in the queue, go into overload
2920 term
->beep_overloaded
= TRUE
;
2922 term
->lastbeep
= ticks
;
2925 * Perform an actual beep if we're not overloaded.
2927 if (!term
->bellovl
|| !term
->beep_overloaded
) {
2928 do_beep(term
->frontend
, term
->beep
);
2930 if (term
->beep
== BELL_VISUAL
) {
2931 term_schedule_vbell(term
, FALSE
, 0);
2934 seen_disp_event(term
);
2937 case '\b': /* BS: Back space */
2938 if (term
->curs
.x
== 0 &&
2939 (term
->curs
.y
== 0 || term
->wrap
== 0))
2941 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2942 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2943 else if (term
->wrapnext
)
2944 term
->wrapnext
= FALSE
;
2947 seen_disp_event(term
);
2949 case '\016': /* LS1: Locking-shift one */
2950 compatibility(VT100
);
2953 case '\017': /* LS0: Locking-shift zero */
2954 compatibility(VT100
);
2957 case '\033': /* ESC: Escape */
2958 if (term
->vt52_mode
)
2959 term
->termstate
= VT52_ESC
;
2961 compatibility(ANSIMIN
);
2962 term
->termstate
= SEEN_ESC
;
2963 term
->esc_query
= FALSE
;
2966 case '\015': /* CR: Carriage return */
2968 term
->wrapnext
= FALSE
;
2969 seen_disp_event(term
);
2970 term
->paste_hold
= 0;
2972 if (term
->crhaslf
) {
2973 if (term
->curs
.y
== term
->marg_b
)
2974 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2975 else if (term
->curs
.y
< term
->rows
- 1)
2979 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2981 case '\014': /* FF: Form feed */
2982 if (has_compat(SCOANSI
)) {
2983 move(term
, 0, 0, 0);
2984 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2986 term
->wrapnext
= FALSE
;
2987 seen_disp_event(term
);
2990 case '\013': /* VT: Line tabulation */
2991 compatibility(VT100
);
2992 case '\012': /* LF: Line feed */
2993 if (term
->curs
.y
== term
->marg_b
)
2994 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2995 else if (term
->curs
.y
< term
->rows
- 1)
2999 term
->wrapnext
= FALSE
;
3000 seen_disp_event(term
);
3001 term
->paste_hold
= 0;
3003 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
3005 case '\t': /* HT: Character tabulation */
3007 pos old_curs
= term
->curs
;
3008 termline
*ldata
= scrlineptr(term
->curs
.y
);
3012 } while (term
->curs
.x
< term
->cols
- 1 &&
3013 !term
->tabs
[term
->curs
.x
]);
3015 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
3016 if (term
->curs
.x
>= term
->cols
/ 2)
3017 term
->curs
.x
= term
->cols
/ 2 - 1;
3019 if (term
->curs
.x
>= term
->cols
)
3020 term
->curs
.x
= term
->cols
- 1;
3023 check_selection(term
, old_curs
, term
->curs
);
3025 seen_disp_event(term
);
3029 switch (term
->termstate
) {
3031 /* Only graphic characters get this far;
3032 * ctrls are stripped above */
3034 termline
*cline
= scrlineptr(term
->curs
.y
);
3039 width
= (term
->cjk_ambig_wide ?
3040 mk_wcwidth_cjk((unsigned int) c
) :
3041 mk_wcwidth((unsigned int) c
));
3043 if (term
->wrapnext
&& term
->wrap
&& width
> 0) {
3044 cline
->lattr
|= LATTR_WRAPPED
;
3045 if (term
->curs
.y
== term
->marg_b
)
3046 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3047 else if (term
->curs
.y
< term
->rows
- 1)
3050 term
->wrapnext
= FALSE
;
3051 cline
= scrlineptr(term
->curs
.y
);
3053 if (term
->insert
&& width
> 0)
3055 if (term
->selstate
!= NO_SELECTION
) {
3056 pos cursplus
= term
->curs
;
3058 check_selection(term
, term
->curs
, cursplus
);
3060 if (((c
& CSET_MASK
) == CSET_ASCII
||
3061 (c
& CSET_MASK
) == 0) &&
3063 logtraffic(term
->logctx
, (unsigned char) c
,
3069 * If we're about to display a double-width
3070 * character starting in the rightmost
3071 * column, then we do something special
3072 * instead. We must print a space in the
3073 * last column of the screen, then wrap;
3074 * and we also set LATTR_WRAPPED2 which
3075 * instructs subsequent cut-and-pasting not
3076 * only to splice this line to the one
3077 * after it, but to ignore the space in the
3078 * last character position as well.
3079 * (Because what was actually output to the
3080 * terminal was presumably just a sequence
3081 * of CJK characters, and we don't want a
3082 * space to be pasted in the middle of
3083 * those just because they had the
3084 * misfortune to start in the wrong parity
3085 * column. xterm concurs.)
3087 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3088 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
3089 if (term
->curs
.x
== term
->cols
-1) {
3090 copy_termchar(cline
, term
->curs
.x
,
3092 cline
->lattr
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
3093 if (term
->curs
.y
== term
->marg_b
)
3094 scroll(term
, term
->marg_t
, term
->marg_b
,
3096 else if (term
->curs
.y
< term
->rows
- 1)
3099 cline
= scrlineptr(term
->curs
.y
);
3100 /* Now we must check_boundary again, of course. */
3101 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3102 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
3106 clear_cc(cline
, term
->curs
.x
);
3107 cline
->chars
[term
->curs
.x
].chr
= c
;
3108 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
3113 clear_cc(cline
, term
->curs
.x
);
3114 cline
->chars
[term
->curs
.x
].chr
= UCSWIDE
;
3115 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
3119 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3120 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
3123 clear_cc(cline
, term
->curs
.x
);
3124 cline
->chars
[term
->curs
.x
].chr
= c
;
3125 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
3129 if (term
->curs
.x
> 0) {
3130 int x
= term
->curs
.x
- 1;
3132 /* If we're in wrapnext state, the character
3133 * to combine with is _here_, not to our left. */
3138 * If the previous character is
3139 * UCSWIDE, back up another one.
3141 if (cline
->chars
[x
].chr
== UCSWIDE
) {
3146 add_cc(cline
, x
, c
);
3147 seen_disp_event(term
);
3154 if (term
->curs
.x
== term
->cols
) {
3156 term
->wrapnext
= TRUE
;
3157 if (term
->wrap
&& term
->vt52_mode
) {
3158 cline
->lattr
|= LATTR_WRAPPED
;
3159 if (term
->curs
.y
== term
->marg_b
)
3160 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3161 else if (term
->curs
.y
< term
->rows
- 1)
3164 term
->wrapnext
= FALSE
;
3167 seen_disp_event(term
);
3173 * This state is virtually identical to SEEN_ESC, with the
3174 * exception that we have an OSC sequence in the pipeline,
3175 * and _if_ we see a backslash, we process it.
3179 term
->termstate
= TOPLEVEL
;
3182 /* else fall through */
3184 if (c
>= ' ' && c
<= '/') {
3185 if (term
->esc_query
)
3186 term
->esc_query
= -1;
3188 term
->esc_query
= c
;
3191 term
->termstate
= TOPLEVEL
;
3192 switch (ANSI(c
, term
->esc_query
)) {
3193 case '[': /* enter CSI mode */
3194 term
->termstate
= SEEN_CSI
;
3195 term
->esc_nargs
= 1;
3196 term
->esc_args
[0] = ARG_DEFAULT
;
3197 term
->esc_query
= FALSE
;
3199 case ']': /* OSC: xterm escape sequences */
3200 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3201 compatibility(OTHER
);
3202 term
->termstate
= SEEN_OSC
;
3203 term
->esc_args
[0] = 0;
3205 case '7': /* DECSC: save cursor */
3206 compatibility(VT100
);
3207 save_cursor(term
, TRUE
);
3209 case '8': /* DECRC: restore cursor */
3210 compatibility(VT100
);
3211 save_cursor(term
, FALSE
);
3212 seen_disp_event(term
);
3214 case '=': /* DECKPAM: Keypad application mode */
3215 compatibility(VT100
);
3216 term
->app_keypad_keys
= TRUE
;
3218 case '>': /* DECKPNM: Keypad numeric mode */
3219 compatibility(VT100
);
3220 term
->app_keypad_keys
= FALSE
;
3222 case 'D': /* IND: exactly equivalent to LF */
3223 compatibility(VT100
);
3224 if (term
->curs
.y
== term
->marg_b
)
3225 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3226 else if (term
->curs
.y
< term
->rows
- 1)
3228 term
->wrapnext
= FALSE
;
3229 seen_disp_event(term
);
3231 case 'E': /* NEL: exactly equivalent to CR-LF */
3232 compatibility(VT100
);
3234 if (term
->curs
.y
== term
->marg_b
)
3235 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3236 else if (term
->curs
.y
< term
->rows
- 1)
3238 term
->wrapnext
= FALSE
;
3239 seen_disp_event(term
);
3241 case 'M': /* RI: reverse index - backwards LF */
3242 compatibility(VT100
);
3243 if (term
->curs
.y
== term
->marg_t
)
3244 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
3245 else if (term
->curs
.y
> 0)
3247 term
->wrapnext
= FALSE
;
3248 seen_disp_event(term
);
3250 case 'Z': /* DECID: terminal type query */
3251 compatibility(VT100
);
3253 ldisc_send(term
->ldisc
, term
->id_string
,
3254 strlen(term
->id_string
), 0);
3256 case 'c': /* RIS: restore power-on settings */
3257 compatibility(VT100
);
3258 power_on(term
, TRUE
);
3259 if (term
->ldisc
) /* cause ldisc to notice changes */
3260 ldisc_send(term
->ldisc
, NULL
, 0, 0);
3261 if (term
->reset_132
) {
3262 if (!term
->no_remote_resize
)
3263 request_resize(term
->frontend
, 80, term
->rows
);
3264 term
->reset_132
= 0;
3267 seen_disp_event(term
);
3269 case 'H': /* HTS: set a tab */
3270 compatibility(VT100
);
3271 term
->tabs
[term
->curs
.x
] = TRUE
;
3274 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3275 compatibility(VT100
);
3281 for (i
= 0; i
< term
->rows
; i
++) {
3282 ldata
= scrlineptr(i
);
3283 for (j
= 0; j
< term
->cols
; j
++) {
3284 copy_termchar(ldata
, j
,
3285 &term
->basic_erase_char
);
3286 ldata
->chars
[j
].chr
= 'E';
3288 ldata
->lattr
= LATTR_NORM
;
3291 seen_disp_event(term
);
3292 scrtop
.x
= scrtop
.y
= 0;
3294 scrbot
.y
= term
->rows
;
3295 check_selection(term
, scrtop
, scrbot
);
3299 case ANSI('3', '#'):
3300 case ANSI('4', '#'):
3301 case ANSI('5', '#'):
3302 case ANSI('6', '#'):
3303 compatibility(VT100
);
3307 switch (ANSI(c
, term
->esc_query
)) {
3308 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3311 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3314 case ANSI('5', '#'): /* DECSWL: normal */
3315 nlattr
= LATTR_NORM
;
3317 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3318 nlattr
= LATTR_WIDE
;
3321 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
3324 /* GZD4: G0 designate 94-set */
3325 case ANSI('A', '('):
3326 compatibility(VT100
);
3327 if (!term
->no_remote_charset
)
3328 term
->cset_attr
[0] = CSET_GBCHR
;
3330 case ANSI('B', '('):
3331 compatibility(VT100
);
3332 if (!term
->no_remote_charset
)
3333 term
->cset_attr
[0] = CSET_ASCII
;
3335 case ANSI('0', '('):
3336 compatibility(VT100
);
3337 if (!term
->no_remote_charset
)
3338 term
->cset_attr
[0] = CSET_LINEDRW
;
3340 case ANSI('U', '('):
3341 compatibility(OTHER
);
3342 if (!term
->no_remote_charset
)
3343 term
->cset_attr
[0] = CSET_SCOACS
;
3345 /* G1D4: G1-designate 94-set */
3346 case ANSI('A', ')'):
3347 compatibility(VT100
);
3348 if (!term
->no_remote_charset
)
3349 term
->cset_attr
[1] = CSET_GBCHR
;
3351 case ANSI('B', ')'):
3352 compatibility(VT100
);
3353 if (!term
->no_remote_charset
)
3354 term
->cset_attr
[1] = CSET_ASCII
;
3356 case ANSI('0', ')'):
3357 compatibility(VT100
);
3358 if (!term
->no_remote_charset
)
3359 term
->cset_attr
[1] = CSET_LINEDRW
;
3361 case ANSI('U', ')'):
3362 compatibility(OTHER
);
3363 if (!term
->no_remote_charset
)
3364 term
->cset_attr
[1] = CSET_SCOACS
;
3366 /* DOCS: Designate other coding system */
3367 case ANSI('8', '%'): /* Old Linux code */
3368 case ANSI('G', '%'):
3369 compatibility(OTHER
);
3370 if (!term
->no_remote_charset
)
3373 case ANSI('@', '%'):
3374 compatibility(OTHER
);
3375 if (!term
->no_remote_charset
)
3381 term
->termstate
= TOPLEVEL
; /* default */
3383 if (term
->esc_nargs
<= ARGS_MAX
) {
3384 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
3385 term
->esc_args
[term
->esc_nargs
- 1] = 0;
3386 term
->esc_args
[term
->esc_nargs
- 1] =
3387 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
3389 term
->termstate
= SEEN_CSI
;
3390 } else if (c
== ';') {
3391 if (term
->esc_nargs
< ARGS_MAX
)
3392 term
->esc_args
[term
->esc_nargs
++] = ARG_DEFAULT
;
3393 term
->termstate
= SEEN_CSI
;
3394 } else if (c
< '@') {
3395 if (term
->esc_query
)
3396 term
->esc_query
= -1;
3398 term
->esc_query
= TRUE
;
3400 term
->esc_query
= c
;
3401 term
->termstate
= SEEN_CSI
;
3403 switch (ANSI(c
, term
->esc_query
)) {
3404 case 'A': /* CUU: move up N lines */
3405 move(term
, term
->curs
.x
,
3406 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3407 seen_disp_event(term
);
3409 case 'e': /* VPR: move down N lines */
3410 compatibility(ANSI
);
3412 case 'B': /* CUD: Cursor down */
3413 move(term
, term
->curs
.x
,
3414 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3415 seen_disp_event(term
);
3417 case ANSI('c', '>'): /* DA: report xterm version */
3418 compatibility(OTHER
);
3419 /* this reports xterm version 136 so that VIM can
3420 use the drag messages from the mouse reporting */
3422 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
3424 case 'a': /* HPR: move right N cols */
3425 compatibility(ANSI
);
3427 case 'C': /* CUF: Cursor right */
3428 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
3430 seen_disp_event(term
);
3432 case 'D': /* CUB: move left N cols */
3433 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
3435 seen_disp_event(term
);
3437 case 'E': /* CNL: move down N lines and CR */
3438 compatibility(ANSI
);
3440 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3441 seen_disp_event(term
);
3443 case 'F': /* CPL: move up N lines and CR */
3444 compatibility(ANSI
);
3446 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3447 seen_disp_event(term
);
3450 case '`': /* HPA: set horizontal posn */
3451 compatibility(ANSI
);
3452 move(term
, def(term
->esc_args
[0], 1) - 1,
3454 seen_disp_event(term
);
3456 case 'd': /* VPA: set vertical posn */
3457 compatibility(ANSI
);
3458 move(term
, term
->curs
.x
,
3459 ((term
->dec_om ? term
->marg_t
: 0) +
3460 def(term
->esc_args
[0], 1) - 1),
3461 (term
->dec_om ?
2 : 0));
3462 seen_disp_event(term
);
3465 case 'f': /* HVP: set horz and vert posns at once */
3466 if (term
->esc_nargs
< 2)
3467 term
->esc_args
[1] = ARG_DEFAULT
;
3468 move(term
, def(term
->esc_args
[1], 1) - 1,
3469 ((term
->dec_om ? term
->marg_t
: 0) +
3470 def(term
->esc_args
[0], 1) - 1),
3471 (term
->dec_om ?
2 : 0));
3472 seen_disp_event(term
);
3474 case 'J': /* ED: erase screen or parts of it */
3476 unsigned int i
= def(term
->esc_args
[0], 0);
3478 /* Erase Saved Lines (xterm)
3479 * This follows Thomas Dickey's xterm. */
3485 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
3489 seen_disp_event(term
);
3491 case 'K': /* EL: erase line or parts of it */
3493 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3496 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
3498 seen_disp_event(term
);
3500 case 'L': /* IL: insert lines */
3501 compatibility(VT102
);
3502 if (term
->curs
.y
<= term
->marg_b
)
3503 scroll(term
, term
->curs
.y
, term
->marg_b
,
3504 -def(term
->esc_args
[0], 1), FALSE
);
3505 seen_disp_event(term
);
3507 case 'M': /* DL: delete lines */
3508 compatibility(VT102
);
3509 if (term
->curs
.y
<= term
->marg_b
)
3510 scroll(term
, term
->curs
.y
, term
->marg_b
,
3511 def(term
->esc_args
[0], 1),
3513 seen_disp_event(term
);
3515 case '@': /* ICH: insert chars */
3516 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3517 compatibility(VT102
);
3518 insch(term
, def(term
->esc_args
[0], 1));
3519 seen_disp_event(term
);
3521 case 'P': /* DCH: delete chars */
3522 compatibility(VT102
);
3523 insch(term
, -def(term
->esc_args
[0], 1));
3524 seen_disp_event(term
);
3526 case 'c': /* DA: terminal type query */
3527 compatibility(VT100
);
3528 /* This is the response for a VT102 */
3530 ldisc_send(term
->ldisc
, term
->id_string
,
3531 strlen(term
->id_string
), 0);
3533 case 'n': /* DSR: cursor position query */
3535 if (term
->esc_args
[0] == 6) {
3537 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
3539 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
3540 } else if (term
->esc_args
[0] == 5) {
3541 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
3545 case 'h': /* SM: toggle modes to high */
3547 compatibility(VT100
);
3550 for (i
= 0; i
< term
->esc_nargs
; i
++)
3551 toggle_mode(term
, term
->esc_args
[i
],
3552 term
->esc_query
, TRUE
);
3555 case 'i': /* MC: Media copy */
3557 compatibility(VT100
);
3560 if (term
->esc_nargs
!= 1) break;
3561 if (term
->esc_args
[0] == 5 &&
3562 (printer
= conf_get_str(term
->conf
,
3563 CONF_printer
))[0]) {
3564 term
->printing
= TRUE
;
3565 term
->only_printing
= !term
->esc_query
;
3566 term
->print_state
= 0;
3567 term_print_setup(term
, printer
);
3568 } else if (term
->esc_args
[0] == 4 &&
3570 term_print_finish(term
);
3574 case 'l': /* RM: toggle modes to low */
3576 compatibility(VT100
);
3579 for (i
= 0; i
< term
->esc_nargs
; i
++)
3580 toggle_mode(term
, term
->esc_args
[i
],
3581 term
->esc_query
, FALSE
);
3584 case 'g': /* TBC: clear tabs */
3585 compatibility(VT100
);
3586 if (term
->esc_nargs
== 1) {
3587 if (term
->esc_args
[0] == 0) {
3588 term
->tabs
[term
->curs
.x
] = FALSE
;
3589 } else if (term
->esc_args
[0] == 3) {
3591 for (i
= 0; i
< term
->cols
; i
++)
3592 term
->tabs
[i
] = FALSE
;
3596 case 'r': /* DECSTBM: set scroll margins */
3597 compatibility(VT100
);
3598 if (term
->esc_nargs
<= 2) {
3600 top
= def(term
->esc_args
[0], 1) - 1;
3601 bot
= (term
->esc_nargs
<= 1
3602 || term
->esc_args
[1] == 0 ?
3604 def(term
->esc_args
[1], term
->rows
)) - 1;
3605 if (bot
>= term
->rows
)
3606 bot
= term
->rows
- 1;
3607 /* VTTEST Bug 9 - if region is less than 2 lines
3608 * don't change region.
3610 if (bot
- top
> 0) {
3615 * I used to think the cursor should be
3616 * placed at the top of the newly marginned
3617 * area. Apparently not: VMS TPU falls over
3620 * Well actually it should for
3623 term
->curs
.y
= (term
->dec_om ?
3625 seen_disp_event(term
);
3629 case 'm': /* SGR: set graphics rendition */
3632 * A VT100 without the AVO only had one
3633 * attribute, either underline or
3634 * reverse video depending on the
3635 * cursor type, this was selected by
3639 * This is sometimes DIM, eg on the
3642 * This is sometimes INVIS various ANSI.
3644 * This like 22 disables BOLD, DIM and INVIS
3646 * The ANSI colours appear on any
3647 * terminal that has colour (obviously)
3648 * but the interaction between sgr0 and
3649 * the colours varies but is usually
3650 * related to the background colour
3651 * erase item. The interaction between
3652 * colour attributes and the mono ones
3653 * is also very implementation
3656 * The 39 and 49 attributes are likely
3657 * to be unimplemented.
3660 for (i
= 0; i
< term
->esc_nargs
; i
++) {
3661 switch (def(term
->esc_args
[i
], 0)) {
3662 case 0: /* restore defaults */
3663 term
->curr_attr
= term
->default_attr
;
3665 case 1: /* enable bold */
3666 compatibility(VT100AVO
);
3667 term
->curr_attr
|= ATTR_BOLD
;
3669 case 21: /* (enable double underline) */
3670 compatibility(OTHER
);
3671 case 4: /* enable underline */
3672 compatibility(VT100AVO
);
3673 term
->curr_attr
|= ATTR_UNDER
;
3675 case 5: /* enable blink */
3676 compatibility(VT100AVO
);
3677 term
->curr_attr
|= ATTR_BLINK
;
3679 case 6: /* SCO light bkgrd */
3680 compatibility(SCOANSI
);
3681 term
->blink_is_real
= FALSE
;
3682 term
->curr_attr
|= ATTR_BLINK
;
3683 term_schedule_tblink(term
);
3685 case 7: /* enable reverse video */
3686 term
->curr_attr
|= ATTR_REVERSE
;
3688 case 10: /* SCO acs off */
3689 compatibility(SCOANSI
);
3690 if (term
->no_remote_charset
) break;
3691 term
->sco_acs
= 0; break;
3692 case 11: /* SCO acs on */
3693 compatibility(SCOANSI
);
3694 if (term
->no_remote_charset
) break;
3695 term
->sco_acs
= 1; break;
3696 case 12: /* SCO acs on, |0x80 */
3697 compatibility(SCOANSI
);
3698 if (term
->no_remote_charset
) break;
3699 term
->sco_acs
= 2; break;
3700 case 22: /* disable bold */
3701 compatibility2(OTHER
, VT220
);
3702 term
->curr_attr
&= ~ATTR_BOLD
;
3704 case 24: /* disable underline */
3705 compatibility2(OTHER
, VT220
);
3706 term
->curr_attr
&= ~ATTR_UNDER
;
3708 case 25: /* disable blink */
3709 compatibility2(OTHER
, VT220
);
3710 term
->curr_attr
&= ~ATTR_BLINK
;
3712 case 27: /* disable reverse video */
3713 compatibility2(OTHER
, VT220
);
3714 term
->curr_attr
&= ~ATTR_REVERSE
;
3725 term
->curr_attr
&= ~ATTR_FGMASK
;
3727 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3737 /* aixterm-style bright foreground */
3738 term
->curr_attr
&= ~ATTR_FGMASK
;
3740 ((term
->esc_args
[i
] - 90 + 8)
3743 case 39: /* default-foreground */
3744 term
->curr_attr
&= ~ATTR_FGMASK
;
3745 term
->curr_attr
|= ATTR_DEFFG
;
3756 term
->curr_attr
&= ~ATTR_BGMASK
;
3758 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3768 /* aixterm-style bright background */
3769 term
->curr_attr
&= ~ATTR_BGMASK
;
3771 ((term
->esc_args
[i
] - 100 + 8)
3774 case 49: /* default-background */
3775 term
->curr_attr
&= ~ATTR_BGMASK
;
3776 term
->curr_attr
|= ATTR_DEFBG
;
3778 case 38: /* xterm 256-colour mode */
3779 if (i
+2 < term
->esc_nargs
&&
3780 term
->esc_args
[i
+1] == 5) {
3781 term
->curr_attr
&= ~ATTR_FGMASK
;
3783 ((term
->esc_args
[i
+2] & 0xFF)
3788 case 48: /* xterm 256-colour mode */
3789 if (i
+2 < term
->esc_nargs
&&
3790 term
->esc_args
[i
+1] == 5) {
3791 term
->curr_attr
&= ~ATTR_BGMASK
;
3793 ((term
->esc_args
[i
+2] & 0xFF)
3800 set_erase_char(term
);
3803 case 's': /* save cursor */
3804 save_cursor(term
, TRUE
);
3806 case 'u': /* restore cursor */
3807 save_cursor(term
, FALSE
);
3808 seen_disp_event(term
);
3810 case 't': /* DECSLPP: set page size - ie window height */
3812 * VT340/VT420 sequence DECSLPP, DEC only allows values
3813 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3814 * illegal values (eg first arg 1..9) for window changing
3817 if (term
->esc_nargs
<= 1
3818 && (term
->esc_args
[0] < 1 ||
3819 term
->esc_args
[0] >= 24)) {
3820 compatibility(VT340TEXT
);
3821 if (!term
->no_remote_resize
)
3822 request_resize(term
->frontend
, term
->cols
,
3823 def(term
->esc_args
[0], 24));
3825 } else if (term
->esc_nargs
>= 1 &&
3826 term
->esc_args
[0] >= 1 &&
3827 term
->esc_args
[0] < 24) {
3828 compatibility(OTHER
);
3830 switch (term
->esc_args
[0]) {
3834 set_iconic(term
->frontend
, FALSE
);
3837 set_iconic(term
->frontend
, TRUE
);
3840 if (term
->esc_nargs
>= 3) {
3841 if (!term
->no_remote_resize
)
3842 move_window(term
->frontend
,
3843 def(term
->esc_args
[1], 0),
3844 def(term
->esc_args
[2], 0));
3848 /* We should resize the window to a given
3849 * size in pixels here, but currently our
3850 * resizing code isn't healthy enough to
3855 set_zorder(term
->frontend
, TRUE
);
3858 /* move to bottom */
3859 set_zorder(term
->frontend
, FALSE
);
3862 refresh_window(term
->frontend
);
3865 if (term
->esc_nargs
>= 3) {
3866 if (!term
->no_remote_resize
)
3867 request_resize(term
->frontend
,
3868 def(term
->esc_args
[2], term
->conf_width
),
3869 def(term
->esc_args
[1], term
->conf_height
));
3873 if (term
->esc_nargs
>= 2)
3874 set_zoomed(term
->frontend
,
3880 ldisc_send(term
->ldisc
,
3881 is_iconic(term
->frontend
) ?
3882 "\033[2t" : "\033[1t", 4, 0);
3886 get_window_pos(term
->frontend
, &x
, &y
);
3887 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3888 ldisc_send(term
->ldisc
, buf
, len
, 0);
3893 get_window_pixels(term
->frontend
, &x
, &y
);
3894 len
= sprintf(buf
, "\033[4;%d;%dt", y
, x
);
3895 ldisc_send(term
->ldisc
, buf
, len
, 0);
3900 len
= sprintf(buf
, "\033[8;%d;%dt",
3901 term
->rows
, term
->cols
);
3902 ldisc_send(term
->ldisc
, buf
, len
, 0);
3907 * Hmmm. Strictly speaking we
3908 * should return `the size of the
3909 * screen in characters', but
3910 * that's not easy: (a) window
3911 * furniture being what it is it's
3912 * hard to compute, and (b) in
3913 * resize-font mode maximising the
3914 * window wouldn't change the
3915 * number of characters. *shrug*. I
3916 * think we'll ignore it for the
3917 * moment and see if anyone
3918 * complains, and then ask them
3919 * what they would like it to do.
3924 term
->remote_qtitle_action
!= TITLE_NONE
) {
3925 if(term
->remote_qtitle_action
== TITLE_REAL
)
3926 p
= get_window_title(term
->frontend
, TRUE
);
3928 p
= EMPTY_WINDOW_TITLE
;
3930 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3931 ldisc_send(term
->ldisc
, p
, len
, 0);
3932 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3937 term
->remote_qtitle_action
!= TITLE_NONE
) {
3938 if(term
->remote_qtitle_action
== TITLE_REAL
)
3939 p
= get_window_title(term
->frontend
, FALSE
);
3941 p
= EMPTY_WINDOW_TITLE
;
3943 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3944 ldisc_send(term
->ldisc
, p
, len
, 0);
3945 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3951 case 'S': /* SU: Scroll up */
3952 compatibility(SCOANSI
);
3953 scroll(term
, term
->marg_t
, term
->marg_b
,
3954 def(term
->esc_args
[0], 1), TRUE
);
3955 term
->wrapnext
= FALSE
;
3956 seen_disp_event(term
);
3958 case 'T': /* SD: Scroll down */
3959 compatibility(SCOANSI
);
3960 scroll(term
, term
->marg_t
, term
->marg_b
,
3961 -def(term
->esc_args
[0], 1), TRUE
);
3962 term
->wrapnext
= FALSE
;
3963 seen_disp_event(term
);
3965 case ANSI('|', '*'): /* DECSNLS */
3967 * Set number of lines on screen
3968 * VT420 uses VGA like hardware and can
3969 * support any size in reasonable range
3970 * (24..49 AIUI) with no default specified.
3972 compatibility(VT420
);
3973 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3974 if (!term
->no_remote_resize
)
3975 request_resize(term
->frontend
, term
->cols
,
3976 def(term
->esc_args
[0],
3977 term
->conf_height
));
3981 case ANSI('|', '$'): /* DECSCPP */
3983 * Set number of columns per page
3984 * Docs imply range is only 80 or 132, but
3987 compatibility(VT340TEXT
);
3988 if (term
->esc_nargs
<= 1) {
3989 if (!term
->no_remote_resize
)
3990 request_resize(term
->frontend
,
3991 def(term
->esc_args
[0],
3997 case 'X': /* ECH: write N spaces w/o moving cursor */
3998 /* XXX VTTEST says this is vt220, vt510 manual
4000 compatibility(ANSIMIN
);
4002 int n
= def(term
->esc_args
[0], 1);
4004 int p
= term
->curs
.x
;
4005 termline
*cline
= scrlineptr(term
->curs
.y
);
4007 if (n
> term
->cols
- term
->curs
.x
)
4008 n
= term
->cols
- term
->curs
.x
;
4009 cursplus
= term
->curs
;
4011 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
4012 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
4013 check_selection(term
, term
->curs
, cursplus
);
4015 copy_termchar(cline
, p
++,
4017 seen_disp_event(term
);
4020 case 'x': /* DECREQTPARM: report terminal characteristics */
4021 compatibility(VT100
);
4024 int i
= def(term
->esc_args
[0], 0);
4025 if (i
== 0 || i
== 1) {
4026 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
4028 ldisc_send(term
->ldisc
, buf
, 20, 0);
4033 compatibility(OTHER
);
4035 int i
= def(term
->esc_args
[0], 1);
4036 pos old_curs
= term
->curs
;
4038 for(;i
>0 && term
->curs
.x
>0; i
--) {
4041 } while (term
->curs
.x
>0 &&
4042 !term
->tabs
[term
->curs
.x
]);
4044 check_selection(term
, old_curs
, term
->curs
);
4047 case ANSI('c', '='): /* Hide or Show Cursor */
4048 compatibility(SCOANSI
);
4049 switch(term
->esc_args
[0]) {
4050 case 0: /* hide cursor */
4051 term
->cursor_on
= FALSE
;
4053 case 1: /* restore cursor */
4054 term
->big_cursor
= FALSE
;
4055 term
->cursor_on
= TRUE
;
4057 case 2: /* block cursor */
4058 term
->big_cursor
= TRUE
;
4059 term
->cursor_on
= TRUE
;
4063 case ANSI('C', '='):
4065 * set cursor start on scanline esc_args[0] and
4066 * end on scanline esc_args[1].If you set
4067 * the bottom scan line to a value less than
4068 * the top scan line, the cursor will disappear.
4070 compatibility(SCOANSI
);
4071 if (term
->esc_nargs
>= 2) {
4072 if (term
->esc_args
[0] > term
->esc_args
[1])
4073 term
->cursor_on
= FALSE
;
4075 term
->cursor_on
= TRUE
;
4078 case ANSI('D', '='):
4079 compatibility(SCOANSI
);
4080 term
->blink_is_real
= FALSE
;
4081 term_schedule_tblink(term
);
4082 if (term
->esc_args
[0]>=1)
4083 term
->curr_attr
|= ATTR_BLINK
;
4085 term
->curr_attr
&= ~ATTR_BLINK
;
4087 case ANSI('E', '='):
4088 compatibility(SCOANSI
);
4089 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
4090 term_schedule_tblink(term
);
4092 case ANSI('F', '='): /* set normal foreground */
4093 compatibility(SCOANSI
);
4094 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
4096 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
4097 (term
->esc_args
[0] & 0x8)) <<
4099 term
->curr_attr
&= ~ATTR_FGMASK
;
4100 term
->curr_attr
|= colour
;
4101 term
->default_attr
&= ~ATTR_FGMASK
;
4102 term
->default_attr
|= colour
;
4103 set_erase_char(term
);
4106 case ANSI('G', '='): /* set normal background */
4107 compatibility(SCOANSI
);
4108 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
4110 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
4111 (term
->esc_args
[0] & 0x8)) <<
4113 term
->curr_attr
&= ~ATTR_BGMASK
;
4114 term
->curr_attr
|= colour
;
4115 term
->default_attr
&= ~ATTR_BGMASK
;
4116 term
->default_attr
|= colour
;
4117 set_erase_char(term
);
4120 case ANSI('L', '='):
4121 compatibility(SCOANSI
);
4122 term
->use_bce
= (term
->esc_args
[0] <= 0);
4123 set_erase_char(term
);
4125 case ANSI('p', '"'): /* DECSCL: set compat level */
4127 * Allow the host to make this emulator a
4128 * 'perfect' VT102. This first appeared in
4129 * the VT220, but we do need to get back to
4130 * PuTTY mode so I won't check it.
4132 * The arg in 40..42,50 are a PuTTY extension.
4133 * The 2nd arg, 8bit vs 7bit is not checked.
4135 * Setting VT102 mode should also change
4136 * the Fkeys to generate PF* codes as a
4137 * real VT102 has no Fkeys. The VT220 does
4138 * this, F11..F13 become ESC,BS,LF other
4139 * Fkeys send nothing.
4141 * Note ESC c will NOT change this!
4144 switch (term
->esc_args
[0]) {
4146 term
->compatibility_level
&= ~TM_VTXXX
;
4147 term
->compatibility_level
|= TM_VT102
;
4150 term
->compatibility_level
&= ~TM_VTXXX
;
4151 term
->compatibility_level
|= TM_VT220
;
4155 if (term
->esc_args
[0] > 60 &&
4156 term
->esc_args
[0] < 70)
4157 term
->compatibility_level
|= TM_VTXXX
;
4161 term
->compatibility_level
&= TM_VTXXX
;
4164 term
->compatibility_level
= TM_PUTTY
;
4167 term
->compatibility_level
= TM_SCOANSI
;
4171 term
->compatibility_level
= TM_PUTTY
;
4177 /* Change the response to CSI c */
4178 if (term
->esc_args
[0] == 50) {
4181 strcpy(term
->id_string
, "\033[?");
4182 for (i
= 1; i
< term
->esc_nargs
; i
++) {
4184 strcat(term
->id_string
, ";");
4185 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
4186 strcat(term
->id_string
, lbuf
);
4188 strcat(term
->id_string
, "c");
4191 /* Is this a good idea ?
4192 * Well we should do a soft reset at this point ...
4194 if (!has_compat(VT420
) && has_compat(VT100
)) {
4195 if (!term
->no_remote_resize
) {
4196 if (term
->reset_132
)
4197 request_resize(132, 24);
4199 request_resize(80, 24);
4207 term
->osc_w
= FALSE
;
4209 case 'P': /* Linux palette sequence */
4210 term
->termstate
= SEEN_OSC_P
;
4211 term
->osc_strlen
= 0;
4213 case 'R': /* Linux palette reset */
4214 palette_reset(term
->frontend
);
4215 term_invalidate(term
);
4216 term
->termstate
= TOPLEVEL
;
4218 case 'W': /* word-set */
4219 term
->termstate
= SEEN_OSC_W
;
4232 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4236 * Grotty hack to support xterm and DECterm title
4237 * sequences concurrently.
4239 if (term
->esc_args
[0] == 2) {
4240 term
->esc_args
[0] = 1;
4243 /* else fall through */
4245 term
->termstate
= OSC_STRING
;
4246 term
->osc_strlen
= 0;
4251 * This OSC stuff is EVIL. It takes just one character to get into
4252 * sysline mode and it's not initially obvious how to get out.
4253 * So I've added CR and LF as string aborts.
4254 * This shouldn't effect compatibility as I believe embedded
4255 * control characters are supposed to be interpreted (maybe?)
4256 * and they don't display anything useful anyway.
4260 if (c
== '\012' || c
== '\015') {
4261 term
->termstate
= TOPLEVEL
;
4262 } else if (c
== 0234 || c
== '\007') {
4264 * These characters terminate the string; ST and BEL
4265 * terminate the sequence and trigger instant
4266 * processing of it, whereas ESC goes back to SEEN_ESC
4267 * mode unless it is followed by \, in which case it is
4268 * synonymous with ST in the first place.
4271 term
->termstate
= TOPLEVEL
;
4272 } else if (c
== '\033')
4273 term
->termstate
= OSC_MAYBE_ST
;
4274 else if (term
->osc_strlen
< OSC_STR_MAX
)
4275 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
4279 int max
= (term
->osc_strlen
== 0 ?
21 : 15);
4281 if ((int)c
>= '0' && (int)c
<= '9')
4283 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
4285 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
4288 term
->termstate
= TOPLEVEL
;
4291 term
->osc_string
[term
->osc_strlen
++] = val
;
4292 if (term
->osc_strlen
>= 7) {
4293 palette_set(term
->frontend
, term
->osc_string
[0],
4294 term
->osc_string
[1] * 16 + term
->osc_string
[2],
4295 term
->osc_string
[3] * 16 + term
->osc_string
[4],
4296 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
4297 term_invalidate(term
);
4298 term
->termstate
= TOPLEVEL
;
4314 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4317 term
->termstate
= OSC_STRING
;
4318 term
->osc_strlen
= 0;
4322 term
->termstate
= TOPLEVEL
;
4323 seen_disp_event(term
);
4326 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
4329 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
4332 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
4335 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
4338 * From the VT100 Manual
4339 * NOTE: The special graphics characters in the VT100
4340 * are different from those in the VT52
4342 * From VT102 manual:
4343 * 137 _ Blank - Same
4344 * 140 ` Reserved - Humm.
4345 * 141 a Solid rectangle - Similar
4346 * 142 b 1/ - Top half of fraction for the
4347 * 143 c 3/ - subscript numbers below.
4350 * 146 f Degrees - Same
4351 * 147 g Plus or minus - Same
4353 * 151 i Ellipsis (dots)
4356 * 154 l Bar at scan 0
4357 * 155 m Bar at scan 1
4358 * 156 n Bar at scan 2
4359 * 157 o Bar at scan 3 - Similar
4360 * 160 p Bar at scan 4 - Similar
4361 * 161 q Bar at scan 5 - Similar
4362 * 162 r Bar at scan 6 - Same
4363 * 163 s Bar at scan 7 - Similar
4378 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
4381 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
4384 move(term
, 0, 0, 0);
4387 if (term
->curs
.y
== 0)
4388 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
4389 else if (term
->curs
.y
> 0)
4391 term
->wrapnext
= FALSE
;
4394 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4398 erase_lots(term
, TRUE
, FALSE
, TRUE
);
4402 /* XXX Print cursor line */
4405 /* XXX Start controller mode */
4408 /* XXX Stop controller mode */
4412 term
->termstate
= VT52_Y1
;
4416 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
4419 term
->app_keypad_keys
= TRUE
;
4422 term
->app_keypad_keys
= FALSE
;
4425 /* XXX This should switch to VT100 mode not current or default
4426 * VT mode. But this will only have effect in a VT220+
4429 term
->vt52_mode
= FALSE
;
4430 term
->blink_is_real
= term
->blinktext
;
4431 term_schedule_tblink(term
);
4435 /* XXX Enter auto print mode */
4438 /* XXX Exit auto print mode */
4441 /* XXX Print screen */
4447 /* compatibility(ATARI) */
4448 move(term
, 0, 0, 0);
4449 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4453 /* compatibility(ATARI) */
4454 if (term
->curs
.y
<= term
->marg_b
)
4455 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
4458 /* compatibility(ATARI) */
4459 if (term
->curs
.y
<= term
->marg_b
)
4460 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
4463 /* compatibility(ATARI) */
4464 term
->termstate
= VT52_FG
;
4467 /* compatibility(ATARI) */
4468 term
->termstate
= VT52_BG
;
4471 /* compatibility(ATARI) */
4472 erase_lots(term
, FALSE
, TRUE
, FALSE
);
4476 /* compatibility(ATARI) */
4477 term
->cursor_on
= TRUE
;
4480 /* compatibility(ATARI) */
4481 term
->cursor_on
= FALSE
;
4483 /* case 'j': Save cursor position - broken on ST */
4484 /* case 'k': Restore cursor position */
4486 /* compatibility(ATARI) */
4487 erase_lots(term
, TRUE
, TRUE
, TRUE
);
4489 term
->wrapnext
= FALSE
;
4492 /* compatibility(ATARI) */
4493 erase_lots(term
, TRUE
, TRUE
, FALSE
);
4496 /* compatibility(ATARI) */
4497 term
->curr_attr
|= ATTR_REVERSE
;
4500 /* compatibility(ATARI) */
4501 term
->curr_attr
&= ~ATTR_REVERSE
;
4503 case 'v': /* wrap Autowrap on - Wyse style */
4504 /* compatibility(ATARI) */
4507 case 'w': /* Autowrap off */
4508 /* compatibility(ATARI) */
4513 /* compatibility(OTHER) */
4514 term
->vt52_bold
= FALSE
;
4515 term
->curr_attr
= ATTR_DEFAULT
;
4516 set_erase_char(term
);
4519 /* compatibility(VI50) */
4520 term
->curr_attr
|= ATTR_UNDER
;
4523 /* compatibility(VI50) */
4524 term
->curr_attr
&= ~ATTR_UNDER
;
4527 /* compatibility(VI50) */
4528 term
->vt52_bold
= TRUE
;
4529 term
->curr_attr
|= ATTR_BOLD
;
4532 /* compatibility(VI50) */
4533 term
->vt52_bold
= FALSE
;
4534 term
->curr_attr
&= ~ATTR_BOLD
;
4540 term
->termstate
= VT52_Y2
;
4541 move(term
, term
->curs
.x
, c
- ' ', 0);
4544 term
->termstate
= TOPLEVEL
;
4545 move(term
, c
- ' ', term
->curs
.y
, 0);
4550 term
->termstate
= TOPLEVEL
;
4551 term
->curr_attr
&= ~ATTR_FGMASK
;
4552 term
->curr_attr
&= ~ATTR_BOLD
;
4553 term
->curr_attr
|= (c
& 0xF) << ATTR_FGSHIFT
;
4554 set_erase_char(term
);
4557 term
->termstate
= TOPLEVEL
;
4558 term
->curr_attr
&= ~ATTR_BGMASK
;
4559 term
->curr_attr
&= ~ATTR_BLINK
;
4560 term
->curr_attr
|= (c
& 0xF) << ATTR_BGSHIFT
;
4561 set_erase_char(term
);
4564 default: break; /* placate gcc warning about enum use */
4566 if (term
->selstate
!= NO_SELECTION
) {
4567 pos cursplus
= term
->curs
;
4569 check_selection(term
, term
->curs
, cursplus
);
4573 term_print_flush(term
);
4575 logflush(term
->logctx
);
4579 * To prevent having to run the reasonably tricky bidi algorithm
4580 * too many times, we maintain a cache of the last lineful of data
4581 * fed to the algorithm on each line of the display.
4583 static int term_bidi_cache_hit(Terminal
*term
, int line
,
4584 termchar
*lbefore
, int width
)
4588 if (!term
->pre_bidi_cache
)
4589 return FALSE
; /* cache doesn't even exist yet! */
4591 if (line
>= term
->bidi_cache_size
)
4592 return FALSE
; /* cache doesn't have this many lines */
4594 if (!term
->pre_bidi_cache
[line
].chars
)
4595 return FALSE
; /* cache doesn't contain _this_ line */
4597 if (term
->pre_bidi_cache
[line
].width
!= width
)
4598 return FALSE
; /* line is wrong width */
4600 for (i
= 0; i
< width
; i
++)
4601 if (!termchars_equal(term
->pre_bidi_cache
[line
].chars
+i
, lbefore
+i
))
4602 return FALSE
; /* line doesn't match cache */
4604 return TRUE
; /* it didn't match. */
4607 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
4608 termchar
*lafter
, bidi_char
*wcTo
,
4609 int width
, int size
)
4613 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
4614 int j
= term
->bidi_cache_size
;
4615 term
->bidi_cache_size
= line
+1;
4616 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
4617 term
->bidi_cache_size
,
4618 struct bidi_cache_entry
);
4619 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
4620 term
->bidi_cache_size
,
4621 struct bidi_cache_entry
);
4622 while (j
< term
->bidi_cache_size
) {
4623 term
->pre_bidi_cache
[j
].chars
=
4624 term
->post_bidi_cache
[j
].chars
= NULL
;
4625 term
->pre_bidi_cache
[j
].width
=
4626 term
->post_bidi_cache
[j
].width
= -1;
4627 term
->pre_bidi_cache
[j
].forward
=
4628 term
->post_bidi_cache
[j
].forward
= NULL
;
4629 term
->pre_bidi_cache
[j
].backward
=
4630 term
->post_bidi_cache
[j
].backward
= NULL
;
4635 sfree(term
->pre_bidi_cache
[line
].chars
);
4636 sfree(term
->post_bidi_cache
[line
].chars
);
4637 sfree(term
->post_bidi_cache
[line
].forward
);
4638 sfree(term
->post_bidi_cache
[line
].backward
);
4640 term
->pre_bidi_cache
[line
].width
= width
;
4641 term
->pre_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4642 term
->post_bidi_cache
[line
].width
= width
;
4643 term
->post_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4644 term
->post_bidi_cache
[line
].forward
= snewn(width
, int);
4645 term
->post_bidi_cache
[line
].backward
= snewn(width
, int);
4647 memcpy(term
->pre_bidi_cache
[line
].chars
, lbefore
, size
* TSIZE
);
4648 memcpy(term
->post_bidi_cache
[line
].chars
, lafter
, size
* TSIZE
);
4649 memset(term
->post_bidi_cache
[line
].forward
, 0, width
* sizeof(int));
4650 memset(term
->post_bidi_cache
[line
].backward
, 0, width
* sizeof(int));
4652 for (i
= 0; i
< width
; i
++) {
4653 int p
= wcTo
[i
].index
;
4655 assert(0 <= p
&& p
< width
);
4657 term
->post_bidi_cache
[line
].backward
[i
] = p
;
4658 term
->post_bidi_cache
[line
].forward
[p
] = i
;
4663 * Prepare the bidi information for a screen line. Returns the
4664 * transformed list of termchars, or NULL if no transformation at
4665 * all took place (because bidi is disabled). If return was
4666 * non-NULL, auxiliary information such as the forward and reverse
4667 * mappings of permutation position are available in
4668 * term->post_bidi_cache[scr_y].*.
4670 static termchar
*term_bidi_line(Terminal
*term
, struct termline
*ldata
,
4676 /* Do Arabic shaping and bidi. */
4677 if(!term
->bidi
|| !term
->arabicshaping
) {
4679 if (!term_bidi_cache_hit(term
, scr_y
, ldata
->chars
, term
->cols
)) {
4681 if (term
->wcFromTo_size
< term
->cols
) {
4682 term
->wcFromTo_size
= term
->cols
;
4683 term
->wcFrom
= sresize(term
->wcFrom
, term
->wcFromTo_size
,
4685 term
->wcTo
= sresize(term
->wcTo
, term
->wcFromTo_size
,
4689 for(it
=0; it
<term
->cols
; it
++)
4691 unsigned long uc
= (ldata
->chars
[it
].chr
);
4693 switch (uc
& CSET_MASK
) {
4695 if (!term
->rawcnp
) {
4696 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4700 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4703 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4706 switch (uc
& CSET_MASK
) {
4708 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4711 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4715 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4717 term
->wcFrom
[it
].index
= it
;
4721 do_bidi(term
->wcFrom
, term
->cols
);
4723 /* this is saved iff done from inside the shaping */
4724 if(!term
->bidi
&& term
->arabicshaping
)
4725 for(it
=0; it
<term
->cols
; it
++)
4726 term
->wcTo
[it
] = term
->wcFrom
[it
];
4728 if(!term
->arabicshaping
)
4729 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4731 if (term
->ltemp_size
< ldata
->size
) {
4732 term
->ltemp_size
= ldata
->size
;
4733 term
->ltemp
= sresize(term
->ltemp
, term
->ltemp_size
,
4737 memcpy(term
->ltemp
, ldata
->chars
, ldata
->size
* TSIZE
);
4739 for(it
=0; it
<term
->cols
; it
++)
4741 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4742 if (term
->ltemp
[it
].cc_next
)
4743 term
->ltemp
[it
].cc_next
-=
4744 it
- term
->wcTo
[it
].index
;
4746 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4747 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4749 term_bidi_cache_store(term
, scr_y
, ldata
->chars
,
4750 term
->ltemp
, term
->wcTo
,
4751 term
->cols
, ldata
->size
);
4753 lchars
= term
->ltemp
;
4755 lchars
= term
->post_bidi_cache
[scr_y
].chars
;
4765 * Given a context, update the window. Out of paranoia, we don't
4766 * allow WM_PAINT responses to do scrolling optimisations.
4768 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
4770 int i
, j
, our_curs_y
, our_curs_x
;
4775 #ifdef OPTIMISE_SCROLL
4776 struct scrollregion
*sr
;
4777 #endif /* OPTIMISE_SCROLL */
4781 ch
= snewn(chlen
, wchar_t);
4783 newline
= snewn(term
->cols
, termchar
);
4785 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
4788 * screen array, disptop, scrtop,
4790 * blinkpc, blink_is_real, tblinker,
4791 * curs.y, curs.x, cblinker, blink_cur, cursor_on, has_focus, wrapnext
4794 /* Has the cursor position or type changed ? */
4795 if (term
->cursor_on
) {
4796 if (term
->has_focus
) {
4797 if (term
->cblinker
|| !term
->blink_cur
)
4798 cursor
= TATTR_ACTCURS
;
4802 cursor
= TATTR_PASCURS
;
4804 cursor
|= TATTR_RIGHTCURS
;
4807 our_curs_y
= term
->curs
.y
- term
->disptop
;
4810 * Adjust the cursor position:
4812 * - in the case where it's resting on the right-hand half
4813 * of a CJK wide character. xterm's behaviour here,
4814 * which seems adequate to me, is to display the cursor
4815 * covering the _whole_ character, exactly as if it were
4816 * one space to the left.
4818 termline
*ldata
= lineptr(term
->curs
.y
);
4821 our_curs_x
= term
->curs
.x
;
4823 if ( (lchars
= term_bidi_line(term
, ldata
, our_curs_y
)) != NULL
) {
4824 our_curs_x
= term
->post_bidi_cache
[our_curs_y
].forward
[our_curs_x
];
4826 lchars
= ldata
->chars
;
4828 if (our_curs_x
> 0 &&
4829 lchars
[our_curs_x
].chr
== UCSWIDE
)
4836 * If the cursor is not where it was last time we painted, and
4837 * its previous position is visible on screen, invalidate its
4838 * previous position.
4840 if (term
->dispcursy
>= 0 &&
4841 (term
->curstype
!= cursor
||
4842 term
->dispcursy
!= our_curs_y
||
4843 term
->dispcursx
!= our_curs_x
)) {
4844 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
4847 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
4848 dispcurs
[-1].attr
|= ATTR_INVALID
;
4849 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
4850 dispcurs
[1].attr
|= ATTR_INVALID
;
4851 dispcurs
->attr
|= ATTR_INVALID
;
4855 term
->dispcursx
= term
->dispcursy
= -1;
4857 #ifdef OPTIMISE_SCROLL
4859 sr
= term
->scrollhead
;
4861 struct scrollregion
*next
= sr
->next
;
4862 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
4866 term
->scrollhead
= term
->scrolltail
= NULL
;
4867 #endif /* OPTIMISE_SCROLL */
4869 /* The normal screen data */
4870 for (i
= 0; i
< term
->rows
; i
++) {
4873 int dirty_line
, dirty_run
, selected
;
4874 unsigned long attr
= 0, cset
= 0;
4877 int last_run_dirty
= 0;
4878 int laststart
, dirtyrect
;
4881 scrpos
.y
= i
+ term
->disptop
;
4882 ldata
= lineptr(scrpos
.y
);
4884 /* Do Arabic shaping and bidi. */
4885 lchars
= term_bidi_line(term
, ldata
, i
);
4887 backward
= term
->post_bidi_cache
[i
].backward
;
4889 lchars
= ldata
->chars
;
4894 * First loop: work along the line deciding what we want
4895 * each character cell to look like.
4897 for (j
= 0; j
< term
->cols
; j
++) {
4898 unsigned long tattr
, tchar
;
4899 termchar
*d
= lchars
+ j
;
4900 scrpos
.x
= backward ? backward
[j
] : j
;
4905 if (!term
->ansi_colour
)
4906 tattr
= (tattr
& ~(ATTR_FGMASK
| ATTR_BGMASK
)) |
4907 ATTR_DEFFG
| ATTR_DEFBG
;
4909 if (!term
->xterm_256_colour
) {
4911 colour
= (tattr
& ATTR_FGMASK
) >> ATTR_FGSHIFT
;
4912 if (colour
>= 16 && colour
< 256)
4913 tattr
= (tattr
&~ ATTR_FGMASK
) | ATTR_DEFFG
;
4914 colour
= (tattr
& ATTR_BGMASK
) >> ATTR_BGSHIFT
;
4915 if (colour
>= 16 && colour
< 256)
4916 tattr
= (tattr
&~ ATTR_BGMASK
) | ATTR_DEFBG
;
4919 switch (tchar
& CSET_MASK
) {
4921 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4924 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4927 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4930 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4933 /* Video reversing things */
4934 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4935 if (term
->seltype
== LEXICOGRAPHIC
)
4936 selected
= (posle(term
->selstart
, scrpos
) &&
4937 poslt(scrpos
, term
->selend
));
4939 selected
= (posPle(term
->selstart
, scrpos
) &&
4940 posPlt(scrpos
, term
->selend
));
4944 ^ (selected ? ATTR_REVERSE
: 0));
4946 /* 'Real' blinking ? */
4947 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4948 if (term
->has_focus
&& term
->tblinker
) {
4949 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4951 tattr
&= ~ATTR_BLINK
;
4955 * Check the font we'll _probably_ be using to see if
4956 * the character is wide when we don't want it to be.
4958 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4959 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4960 (ATTR_NARROW
| DATTR_MASK
))) {
4961 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4962 tattr
|= ATTR_NARROW
;
4963 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4964 tattr
|= ATTR_NARROW
;
4966 if (i
== our_curs_y
&& j
== our_curs_x
) {
4968 term
->curstype
= cursor
;
4969 term
->dispcursx
= j
;
4970 term
->dispcursy
= i
;
4974 newline
[j
].attr
= tattr
;
4975 newline
[j
].chr
= tchar
;
4976 /* Combining characters are still read from lchars */
4977 newline
[j
].cc_next
= 0;
4981 * Now loop over the line again, noting where things have
4984 * During this loop, we keep track of where we last saw
4985 * DATTR_STARTRUN. Any mismatch automatically invalidates
4986 * _all_ of the containing run that was last printed: that
4987 * is, any rectangle that was drawn in one go in the
4988 * previous update should be either left completely alone
4989 * or overwritten in its entirety. This, along with the
4990 * expectation that front ends clip all text runs to their
4991 * bounding rectangle, should solve any possible problems
4992 * with fonts that overflow their character cells.
4996 for (j
= 0; j
< term
->cols
; j
++) {
4997 if (term
->disptext
[i
]->chars
[j
].attr
& DATTR_STARTRUN
) {
5002 if (term
->disptext
[i
]->chars
[j
].chr
!= newline
[j
].chr
||
5003 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
)
5004 != newline
[j
].attr
) {
5008 for (k
= laststart
; k
< j
; k
++)
5009 term
->disptext
[i
]->chars
[k
].attr
|= ATTR_INVALID
;
5016 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5020 * Finally, loop once more and actually do the drawing.
5022 dirty_run
= dirty_line
= (ldata
->lattr
!=
5023 term
->disptext
[i
]->lattr
);
5024 term
->disptext
[i
]->lattr
= ldata
->lattr
;
5026 for (j
= 0; j
< term
->cols
; j
++) {
5027 unsigned long tattr
, tchar
;
5028 int break_run
, do_copy
;
5029 termchar
*d
= lchars
+ j
;
5031 tattr
= newline
[j
].attr
;
5032 tchar
= newline
[j
].chr
;
5034 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
5037 break_run
= ((tattr
^ attr
) & term
->attr_mask
) != 0;
5039 #ifdef USES_VTLINE_HACK
5040 /* Special hack for VT100 Linedraw glyphs */
5041 if ((tchar
>= 0x23BA && tchar
<= 0x23BD) ||
5042 (j
> 0 && (newline
[j
-1].chr
>= 0x23BA &&
5043 newline
[j
-1].chr
<= 0x23BD)))
5048 * Separate out sequences of characters that have the
5049 * same CSET, if that CSET is a magic one.
5051 if (CSET_OF(tchar
) != cset
)
5055 * Break on both sides of any combined-character cell.
5057 if (d
->cc_next
!= 0 ||
5058 (j
> 0 && d
[-1].cc_next
!= 0))
5061 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
5062 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
5063 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
) == tattr
)
5065 else if (!dirty_run
&& ccount
== 1)
5070 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
5071 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
5073 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
5074 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
5080 cset
= CSET_OF(tchar
);
5081 if (term
->ucsdata
->dbcs_screenfont
)
5082 last_run_dirty
= dirty_run
;
5083 dirty_run
= dirty_line
;
5087 if (!termchars_equal_override(&term
->disptext
[i
]->chars
[j
],
5093 if (ccount
+2 > chlen
) {
5094 chlen
= ccount
+ 256;
5095 ch
= sresize(ch
, chlen
, wchar_t);
5098 #ifdef PLATFORM_IS_UTF16
5099 if (tchar
> 0x10000 && tchar
< 0x110000) {
5100 ch
[ccount
++] = (wchar_t) HIGH_SURROGATE_OF(tchar
);
5101 ch
[ccount
++] = (wchar_t) LOW_SURROGATE_OF(tchar
);
5103 #endif /* PLATFORM_IS_UTF16 */
5104 ch
[ccount
++] = (wchar_t) tchar
;
5109 while (dd
->cc_next
) {
5110 unsigned long schar
;
5115 switch (schar
& CSET_MASK
) {
5117 schar
= term
->ucsdata
->unitab_line
[schar
& 0xFF];
5120 schar
= term
->ucsdata
->unitab_xterm
[schar
& 0xFF];
5123 schar
= term
->ucsdata
->unitab_scoacs
[schar
&0xFF];
5127 if (ccount
+2 > chlen
) {
5128 chlen
= ccount
+ 256;
5129 ch
= sresize(ch
, chlen
, wchar_t);
5132 #ifdef PLATFORM_IS_UTF16
5133 if (schar
> 0x10000 && schar
< 0x110000) {
5134 ch
[ccount
++] = (wchar_t) HIGH_SURROGATE_OF(schar
);
5135 ch
[ccount
++] = (wchar_t) LOW_SURROGATE_OF(schar
);
5137 #endif /* PLATFORM_IS_UTF16 */
5138 ch
[ccount
++] = (wchar_t) schar
;
5141 attr
|= TATTR_COMBINING
;
5145 copy_termchar(term
->disptext
[i
], j
, d
);
5146 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
5147 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
5149 term
->disptext
[i
]->chars
[j
].attr
|= DATTR_STARTRUN
;
5152 /* If it's a wide char step along to the next one. */
5153 if (tattr
& ATTR_WIDE
) {
5154 if (++j
< term
->cols
) {
5157 * By construction above, the cursor should not
5158 * be on the right-hand half of this character.
5161 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
5162 if (!termchars_equal(&term
->disptext
[i
]->chars
[j
], d
))
5164 copy_termchar(term
->disptext
[i
], j
, d
);
5168 if (dirty_run
&& ccount
> 0) {
5169 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
5171 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
5172 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
5184 * Invalidate the whole screen so it will be repainted in full.
5186 void term_invalidate(Terminal
*term
)
5190 for (i
= 0; i
< term
->rows
; i
++)
5191 for (j
= 0; j
< term
->cols
; j
++)
5192 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5194 term_schedule_update(term
);
5198 * Paint the window in response to a WM_PAINT message.
5200 void term_paint(Terminal
*term
, Context ctx
,
5201 int left
, int top
, int right
, int bottom
, int immediately
)
5204 if (left
< 0) left
= 0;
5205 if (top
< 0) top
= 0;
5206 if (right
>= term
->cols
) right
= term
->cols
-1;
5207 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
5209 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
5210 if ((term
->disptext
[i
]->lattr
& LATTR_MODE
) == LATTR_NORM
)
5211 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
5212 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5214 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
5215 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5219 do_paint (term
, ctx
, FALSE
);
5221 term_schedule_update(term
);
5226 * Attempt to scroll the scrollback. The second parameter gives the
5227 * position we want to scroll to; the first is +1 to denote that
5228 * this position is relative to the beginning of the scrollback, -1
5229 * to denote it is relative to the end, and 0 to denote that it is
5230 * relative to the current position.
5232 void term_scroll(Terminal
*term
, int rel
, int where
)
5234 int sbtop
= -sblines(term
);
5235 #ifdef OPTIMISE_SCROLL
5236 int olddisptop
= term
->disptop
;
5238 #endif /* OPTIMISE_SCROLL */
5240 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
5241 if (term
->disptop
< sbtop
)
5242 term
->disptop
= sbtop
;
5243 if (term
->disptop
> 0)
5246 #ifdef OPTIMISE_SCROLL
5247 shift
= (term
->disptop
- olddisptop
);
5248 if (shift
< term
->rows
&& shift
> -term
->rows
)
5249 scroll_display(term
, 0, term
->rows
- 1, shift
);
5250 #endif /* OPTIMISE_SCROLL */
5255 * Scroll the scrollback to centre it on the beginning or end of the
5256 * current selection, if any.
5258 void term_scroll_to_selection(Terminal
*term
, int which_end
)
5262 int sbtop
= -sblines(term
);
5264 if (term
->selstate
!= SELECTED
)
5267 target
= term
->selend
;
5269 target
= term
->selstart
;
5271 y
= target
.y
- term
->rows
/2;
5276 term_scroll(term
, -1, y
);
5280 * Helper routine for clipme(): growing buffer.
5283 int buflen
; /* amount of allocated space in textbuf/attrbuf */
5284 int bufpos
; /* amount of actual data */
5285 wchar_t *textbuf
; /* buffer for copied text */
5286 wchar_t *textptr
; /* = textbuf + bufpos (current insertion point) */
5287 int *attrbuf
; /* buffer for copied attributes */
5288 int *attrptr
; /* = attrbuf + bufpos */
5291 static void clip_addchar(clip_workbuf
*b
, wchar_t chr
, int attr
)
5293 if (b
->bufpos
>= b
->buflen
) {
5295 b
->textbuf
= sresize(b
->textbuf
, b
->buflen
, wchar_t);
5296 b
->textptr
= b
->textbuf
+ b
->bufpos
;
5297 b
->attrbuf
= sresize(b
->attrbuf
, b
->buflen
, int);
5298 b
->attrptr
= b
->attrbuf
+ b
->bufpos
;
5300 *b
->textptr
++ = chr
;
5301 *b
->attrptr
++ = attr
;
5305 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
5313 buf
.textptr
= buf
.textbuf
= snewn(buf
.buflen
, wchar_t);
5314 buf
.attrptr
= buf
.attrbuf
= snewn(buf
.buflen
, int);
5316 old_top_x
= top
.x
; /* needed for rect==1 */
5318 while (poslt(top
, bottom
)) {
5320 termline
*ldata
= lineptr(top
.y
);
5324 * nlpos will point at the maximum position on this line we
5325 * should copy up to. So we start it at the end of the
5329 nlpos
.x
= term
->cols
;
5332 * ... move it backwards if there's unused space at the end
5333 * of the line (and also set `nl' if this is the case,
5334 * because in normal selection mode this means we need a
5335 * newline at the end)...
5337 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5339 IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
5340 !ldata
->chars
[nlpos
.x
- 1].cc_next
&&
5343 if (poslt(nlpos
, bottom
))
5345 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
5346 /* Ignore the last char on the line in a WRAPPED2 line. */
5351 * ... and then clip it to the terminal x coordinate if
5352 * we're doing rectangular selection. (In this case we
5353 * still did the above, so that copying e.g. the right-hand
5354 * column from a table doesn't fill with spaces on the
5358 if (nlpos
.x
> bottom
.x
)
5360 nl
= (top
.y
< bottom
.y
);
5363 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
5366 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
5368 wchar_t cbuf
[16], *p
;
5372 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
5378 int uc
= ldata
->chars
[x
].chr
;
5379 attr
= ldata
->chars
[x
].attr
;
5381 switch (uc
& CSET_MASK
) {
5383 if (!term
->rawcnp
) {
5384 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5388 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5391 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5394 switch (uc
& CSET_MASK
) {
5396 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5399 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5403 c
= (uc
& ~CSET_MASK
);
5404 #ifdef PLATFORM_IS_UTF16
5405 if (uc
> 0x10000 && uc
< 0x110000) {
5406 cbuf
[0] = 0xD800 | ((uc
- 0x10000) >> 10);
5407 cbuf
[1] = 0xDC00 | ((uc
- 0x10000) & 0x3FF);
5416 if (DIRECT_FONT(uc
)) {
5417 if (c
>= ' ' && c
!= 0x7F) {
5421 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
5423 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
5424 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
5428 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
5432 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
5439 for (p
= cbuf
; *p
; p
++)
5440 clip_addchar(&buf
, *p
, attr
);
5442 if (ldata
->chars
[x
].cc_next
)
5443 x
+= ldata
->chars
[x
].cc_next
;
5451 for (i
= 0; i
< sel_nl_sz
; i
++)
5452 clip_addchar(&buf
, sel_nl
[i
], 0);
5455 top
.x
= rect ? old_top_x
: 0;
5459 #if SELECTION_NUL_TERMINATED
5460 clip_addchar(&buf
, 0, 0);
5462 /* Finally, transfer all that to the clipboard. */
5463 write_clip(term
->frontend
, buf
.textbuf
, buf
.attrbuf
, buf
.bufpos
, desel
);
5468 void term_copyall(Terminal
*term
)
5472 tree234
*screen
= term
->screen
;
5473 top
.y
= -sblines(term
);
5475 bottom
.y
= find_last_nonempty_line(term
, screen
);
5476 bottom
.x
= term
->cols
;
5477 clipme(term
, top
, bottom
, 0, TRUE
);
5481 * The wordness array is mainly for deciding the disposition of the
5482 * US-ASCII characters.
5484 static int wordtype(Terminal
*term
, int uc
)
5487 int start
, end
, ctype
;
5489 static const struct ucsword ucs_words
[] = {
5495 0x037e, 0x037e, 1}, /* Greek question mark */
5497 0x0387, 0x0387, 1}, /* Greek ano teleia */
5499 0x055a, 0x055f, 1}, /* Armenian punctuation */
5501 0x0589, 0x0589, 1}, /* Armenian full stop */
5503 0x0700, 0x070d, 1}, /* Syriac punctuation */
5505 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5507 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5509 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5511 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5513 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5515 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5517 0x2000, 0x200a, 0}, /* Various spaces */
5519 0x2070, 0x207f, 2}, /* superscript */
5521 0x2080, 0x208f, 2}, /* subscript */
5523 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5525 0x3000, 0x3000, 0}, /* ideographic space */
5527 0x3001, 0x3020, 1}, /* ideographic punctuation */
5529 0x303f, 0x309f, 3}, /* Hiragana */
5531 0x30a0, 0x30ff, 3}, /* Katakana */
5533 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5535 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5537 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5539 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5541 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5543 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5545 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5547 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5549 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5553 const struct ucsword
*wptr
;
5555 switch (uc
& CSET_MASK
) {
5557 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5560 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5563 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5566 switch (uc
& CSET_MASK
) {
5568 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5571 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5575 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5576 * fail as there's such a thing as a double width space. :-(
5578 if (term
->ucsdata
->dbcs_screenfont
&&
5579 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
5583 return term
->wordness
[uc
];
5585 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
5586 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
5594 * Spread the selection outwards according to the selection mode.
5596 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
5600 int topy
= -sblines(term
);
5602 ldata
= lineptr(p
.y
);
5604 switch (term
->selmode
) {
5607 * In this mode, every character is a separate unit, except
5608 * for runs of spaces at the end of a non-wrapping line.
5610 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5611 termchar
*q
= ldata
->chars
+ term
->cols
;
5612 while (q
> ldata
->chars
&&
5613 IS_SPACE_CHR(q
[-1].chr
) && !q
[-1].cc_next
)
5615 if (q
== ldata
->chars
+ term
->cols
)
5617 if (p
.x
>= q
- ldata
->chars
)
5618 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
5623 * In this mode, the units are maximal runs of characters
5624 * whose `wordness' has the same value.
5626 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
5629 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
5630 term
->cols
-1 : term
->cols
);
5631 if (p
.x
< maxcols
-1) {
5632 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
5637 if (p
.y
+1 < term
->rows
&&
5638 (ldata
->lattr
& LATTR_WRAPPED
)) {
5640 ldata2
= lineptr(p
.y
+1);
5641 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
5658 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
5667 ldata2
= lineptr(p
.y
-1);
5668 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
5669 term
->cols
-1 : term
->cols
);
5670 if (ldata2
->lattr
& LATTR_WRAPPED
) {
5671 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
5689 * In this mode, every line is a unit.
5691 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
5699 static void sel_spread(Terminal
*term
)
5701 if (term
->seltype
== LEXICOGRAPHIC
) {
5702 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
5703 decpos(term
->selend
);
5704 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
5705 incpos(term
->selend
);
5709 void term_do_paste(Terminal
*term
)
5714 get_clip(term
->frontend
, &data
, &len
);
5715 if (data
&& len
> 0) {
5718 term_seen_key_event(term
); /* pasted data counts */
5720 if (term
->paste_buffer
)
5721 sfree(term
->paste_buffer
);
5722 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5723 term
->paste_buffer
= snewn(len
+ 12, wchar_t);
5725 if (term
->bracketed_paste
) {
5726 memcpy(term
->paste_buffer
, L
"\033[200~", 6 * sizeof(wchar_t));
5727 term
->paste_len
+= 6;
5731 while (p
< data
+ len
) {
5732 while (p
< data
+ len
&&
5733 !(p
<= data
+ len
- sel_nl_sz
&&
5734 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
5739 for (i
= 0; i
< p
- q
; i
++) {
5740 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
5744 if (p
<= data
+ len
- sel_nl_sz
&&
5745 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
5746 term
->paste_buffer
[term
->paste_len
++] = '\015';
5752 if (term
->bracketed_paste
) {
5753 memcpy(term
->paste_buffer
+ term
->paste_len
,
5754 L
"\033[201~", 6 * sizeof(wchar_t));
5755 term
->paste_len
+= 6;
5758 /* Assume a small paste will be OK in one go. */
5759 if (term
->paste_len
< 256) {
5761 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
5762 if (term
->paste_buffer
)
5763 sfree(term
->paste_buffer
);
5764 term
->paste_buffer
= 0;
5765 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5768 get_clip(term
->frontend
, NULL
, NULL
);
5771 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
5772 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
5776 int raw_mouse
= (term
->xterm_mouse
&&
5777 !term
->no_mouse_rep
&&
5778 !(term
->mouse_override
&& shift
));
5779 int default_seltype
;
5783 if (a
== MA_DRAG
&& !raw_mouse
)
5784 term_scroll(term
, 0, -1);
5786 if (y
>= term
->rows
) {
5788 if (a
== MA_DRAG
&& !raw_mouse
)
5789 term_scroll(term
, 0, +1);
5798 if (x
>= term
->cols
)
5801 selpoint
.y
= y
+ term
->disptop
;
5802 ldata
= lineptr(selpoint
.y
);
5804 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
5808 * Transform x through the bidi algorithm to find the _logical_
5809 * click point from the physical one.
5811 if (term_bidi_line(term
, ldata
, y
) != NULL
) {
5812 x
= term
->post_bidi_cache
[y
].backward
[x
];
5819 * If we're in the middle of a selection operation, we ignore raw
5820 * mouse mode until it's done (we must have been not in raw mouse
5821 * mode when it started).
5822 * This makes use of Shift for selection reliable, and avoids the
5823 * host seeing mouse releases for which they never saw corresponding
5827 (term
->selstate
!= ABOUT_TO
) && (term
->selstate
!= DRAGGING
)) {
5828 int encstate
= 0, r
, c
;
5836 encstate
= 0x00; /* left button down */
5847 case MBT_WHEEL_DOWN
:
5850 default: break; /* placate gcc warning about enum use */
5854 if (term
->xterm_mouse
== 1)
5859 /* If multiple extensions are enabled, the xterm 1006 is used, so it's okay to check for only that */
5860 if (!term
->xterm_extended_mouse
)
5862 term
->mouse_is_down
= 0;
5865 if (term
->mouse_is_down
== braw
)
5867 term
->mouse_is_down
= braw
;
5869 default: break; /* placate gcc warning about enum use */
5878 /* Check the extensions in decreasing order of preference. Encoding the release event above assumes that 1006 comes first. */
5879 if (term
->xterm_extended_mouse
) {
5880 len
= sprintf(abuf
, "\033[<%d;%d;%d%c", encstate
, c
, r
, a
== MA_RELEASE ?
'm' : 'M');
5881 } else if (term
->urxvt_extended_mouse
) {
5882 len
= sprintf(abuf
, "\033[%d;%d;%dM", encstate
+ 32, c
, r
);
5883 } else if (c
<= 223 && r
<= 223) {
5884 len
= sprintf(abuf
, "\033[M%c%c%c", encstate
+ 32, c
+ 32, r
+ 32);
5886 ldisc_send(term
->ldisc
, abuf
, len
, 0);
5892 * Set the selection type (rectangular or normal) at the start
5893 * of a selection attempt, from the state of Alt.
5895 if (!alt
^ !term
->rect_select
)
5896 default_seltype
= RECTANGULAR
;
5898 default_seltype
= LEXICOGRAPHIC
;
5900 if (term
->selstate
== NO_SELECTION
) {
5901 term
->seltype
= default_seltype
;
5904 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
5906 term
->selstate
= ABOUT_TO
;
5907 term
->seltype
= default_seltype
;
5908 term
->selanchor
= selpoint
;
5909 term
->selmode
= SM_CHAR
;
5910 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
5912 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
5913 term
->selstate
= DRAGGING
;
5914 term
->selstart
= term
->selanchor
= selpoint
;
5915 term
->selend
= term
->selstart
;
5916 incpos(term
->selend
);
5918 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
5919 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
5920 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
5922 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
5923 term
->selstate
== SELECTED
) {
5924 if (term
->seltype
== LEXICOGRAPHIC
) {
5926 * For normal selection, we extend by moving
5927 * whichever end of the current selection is closer
5930 if (posdiff(selpoint
, term
->selstart
) <
5931 posdiff(term
->selend
, term
->selstart
) / 2) {
5932 term
->selanchor
= term
->selend
;
5933 decpos(term
->selanchor
);
5935 term
->selanchor
= term
->selstart
;
5939 * For rectangular selection, we have a choice of
5940 * _four_ places to put selanchor and selpoint: the
5941 * four corners of the selection.
5943 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
5944 term
->selanchor
.x
= term
->selend
.x
-1;
5946 term
->selanchor
.x
= term
->selstart
.x
;
5948 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
5949 term
->selanchor
.y
= term
->selend
.y
;
5951 term
->selanchor
.y
= term
->selstart
.y
;
5953 term
->selstate
= DRAGGING
;
5955 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
5956 term
->selanchor
= selpoint
;
5957 term
->selstate
= DRAGGING
;
5958 if (term
->seltype
== LEXICOGRAPHIC
) {
5960 * For normal selection, we set (selstart,selend) to
5961 * (selpoint,selanchor) in some order.
5963 if (poslt(selpoint
, term
->selanchor
)) {
5964 term
->selstart
= selpoint
;
5965 term
->selend
= term
->selanchor
;
5966 incpos(term
->selend
);
5968 term
->selstart
= term
->selanchor
;
5969 term
->selend
= selpoint
;
5970 incpos(term
->selend
);
5974 * For rectangular selection, we may need to
5975 * interchange x and y coordinates (if the user has
5976 * dragged in the -x and +y directions, or vice versa).
5978 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
5979 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
5980 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
5981 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
5984 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
5986 if (term
->selstate
== DRAGGING
) {
5988 * We've completed a selection. We now transfer the
5989 * data to the clipboard.
5991 clipme(term
, term
->selstart
, term
->selend
,
5992 (term
->seltype
== RECTANGULAR
), FALSE
);
5993 term
->selstate
= SELECTED
;
5995 term
->selstate
= NO_SELECTION
;
5996 } else if (bcooked
== MBT_PASTE
5998 #if MULTICLICK_ONLY_EVENT
5999 || a
== MA_2CLK
|| a
== MA_3CLK
6002 request_paste(term
->frontend
);
6006 * Since terminal output is suppressed during drag-selects, we
6007 * should make sure to write any pending output if one has just
6010 if (term
->selstate
!= DRAGGING
)
6015 int format_arrow_key(char *buf
, Terminal
*term
, int xkey
, int ctrl
)
6019 if (term
->vt52_mode
)
6020 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6022 int app_flg
= (term
->app_cursor_keys
&& !term
->no_applic_c
);
6025 * RDB: VT100 & VT102 manuals both state the app cursor
6026 * keys only work if the app keypad is on.
6028 * SGT: That may well be true, but xterm disagrees and so
6029 * does at least one application, so I've #if'ed this out
6030 * and the behaviour is back to PuTTY's original: app
6031 * cursor and app keypad are independently switchable
6032 * modes. If anyone complains about _this_ I'll have to
6033 * put in a configurable option.
6035 if (!term
->app_keypad_keys
)
6038 /* Useful mapping of Ctrl-arrows */
6043 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
6045 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6051 void term_nopaste(Terminal
*term
)
6053 if (term
->paste_len
== 0)
6055 sfree(term
->paste_buffer
);
6056 term
->paste_buffer
= NULL
;
6057 term
->paste_len
= 0;
6060 int term_paste_pending(Terminal
*term
)
6062 return term
->paste_len
!= 0;
6065 void term_paste(Terminal
*term
)
6067 long now
, paste_diff
;
6069 if (term
->paste_len
== 0)
6072 /* Don't wait forever to paste */
6073 if (term
->paste_hold
) {
6074 now
= GETTICKCOUNT();
6075 paste_diff
= now
- term
->last_paste
;
6076 if (paste_diff
>= 0 && paste_diff
< 450)
6079 term
->paste_hold
= 0;
6081 while (term
->paste_pos
< term
->paste_len
) {
6083 while (n
+ term
->paste_pos
< term
->paste_len
) {
6084 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
6088 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
6089 term
->paste_pos
+= n
;
6091 if (term
->paste_pos
< term
->paste_len
) {
6092 term
->paste_hold
= 1;
6096 sfree(term
->paste_buffer
);
6097 term
->paste_buffer
= NULL
;
6098 term
->paste_len
= 0;
6101 static void deselect(Terminal
*term
)
6103 term
->selstate
= NO_SELECTION
;
6104 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
6107 void term_deselect(Terminal
*term
)
6113 * Since terminal output is suppressed during drag-selects, we
6114 * should make sure to write any pending output if one has just
6117 if (term
->selstate
!= DRAGGING
)
6121 int term_ldisc(Terminal
*term
, int option
)
6123 if (option
== LD_ECHO
)
6124 return term
->term_echoing
;
6125 if (option
== LD_EDIT
)
6126 return term
->term_editing
;
6130 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
6132 bufchain_add(&term
->inbuf
, data
, len
);
6134 if (!term
->in_term_out
) {
6135 term
->in_term_out
= TRUE
;
6136 term_reset_cblink(term
);
6138 * During drag-selects, we do not process terminal input,
6139 * because the user will want the screen to hold still to
6142 if (term
->selstate
!= DRAGGING
)
6144 term
->in_term_out
= FALSE
;
6148 * term_out() always completely empties inbuf. Therefore,
6149 * there's no reason at all to return anything other than zero
6150 * from this function, because there _can't_ be a question of
6151 * the remote side needing to wait until term_out() has cleared
6154 * This is a slightly suboptimal way to deal with SSH-2 - in
6155 * principle, the window mechanism would allow us to continue
6156 * to accept data on forwarded ports and X connections even
6157 * while the terminal processing was going slowly - but we
6158 * can't do the 100% right thing without moving the terminal
6159 * processing into a separate thread, and that might hurt
6160 * portability. So we manage stdout buffering the old SSH-1 way:
6161 * if the terminal processing goes slowly, the whole SSH
6162 * connection stops accepting data until it's ready.
6164 * In practice, I can't imagine this causing serious trouble.
6170 * Write untrusted data to the terminal.
6171 * The only control character that should be honoured is \n (which
6172 * will behave as a CRLF).
6174 int term_data_untrusted(Terminal
*term
, const char *data
, int len
)
6177 /* FIXME: more sophisticated checking? */
6178 for (i
= 0; i
< len
; i
++) {
6179 if (data
[i
] == '\n')
6180 term_data(term
, 1, "\r\n", 2);
6181 else if (data
[i
] & 0x60)
6182 term_data(term
, 1, data
+ i
, 1);
6184 return 0; /* assumes that term_data() always returns 0 */
6187 void term_provide_logctx(Terminal
*term
, void *logctx
)
6189 term
->logctx
= logctx
;
6192 void term_set_focus(Terminal
*term
, int has_focus
)
6194 term
->has_focus
= has_focus
;
6195 term_schedule_cblink(term
);
6199 * Provide "auto" settings for remote tty modes, suitable for an
6200 * application with a terminal window.
6202 char *term_get_ttymode(Terminal
*term
, const char *mode
)
6205 if (strcmp(mode
, "ERASE") == 0) {
6206 val
= term
->bksp_is_delete ?
"^?" : "^H";
6208 /* FIXME: perhaps we should set ONLCR based on lfhascr as well? */
6209 /* FIXME: or ECHO and friends based on local echo state? */
6213 struct term_userpass_state
{
6215 int done_prompt
; /* printed out prompt yet? */
6216 size_t pos
; /* cursor position */
6220 * Process some terminal data in the course of username/password
6223 int term_get_userpass_input(Terminal
*term
, prompts_t
*p
,
6224 unsigned char *in
, int inlen
)
6226 struct term_userpass_state
*s
= (struct term_userpass_state
*)p
->data
;
6229 * First call. Set some stuff up.
6231 p
->data
= s
= snew(struct term_userpass_state
);
6234 /* We only print the `name' caption if we have to... */
6235 if (p
->name_reqd
&& p
->name
) {
6236 size_t l
= strlen(p
->name
);
6237 term_data_untrusted(term
, p
->name
, l
);
6238 if (p
->name
[l
-1] != '\n')
6239 term_data_untrusted(term
, "\n", 1);
6241 /* ...but we always print any `instruction'. */
6242 if (p
->instruction
) {
6243 size_t l
= strlen(p
->instruction
);
6244 term_data_untrusted(term
, p
->instruction
, l
);
6245 if (p
->instruction
[l
-1] != '\n')
6246 term_data_untrusted(term
, "\n", 1);
6249 * Zero all the results, in case we abort half-way through.
6253 for (i
= 0; i
< (int)p
->n_prompts
; i
++)
6254 prompt_set_result(p
->prompts
[i
], "");
6258 while (s
->curr_prompt
< p
->n_prompts
) {
6260 prompt_t
*pr
= p
->prompts
[s
->curr_prompt
];
6261 int finished_prompt
= 0;
6263 if (!s
->done_prompt
) {
6264 term_data_untrusted(term
, pr
->prompt
, strlen(pr
->prompt
));
6269 /* Breaking out here ensures that the prompt is printed even
6270 * if we're now waiting for user data. */
6271 if (!in
|| !inlen
) break;
6273 /* FIXME: should we be using local-line-editing code instead? */
6274 while (!finished_prompt
&& inlen
) {
6280 term_data(term
, 0, "\r\n", 2);
6281 prompt_ensure_result_size(pr
, s
->pos
+ 1);
6282 pr
->result
[s
->pos
] = '\0';
6283 /* go to next prompt, if any */
6286 finished_prompt
= 1; /* break out */
6292 term_data(term
, 0, "\b \b", 3);
6298 while (s
->pos
> 0) {
6300 term_data(term
, 0, "\b \b", 3);
6306 /* Immediate abort. */
6307 term_data(term
, 0, "\r\n", 2);
6310 return 0; /* user abort */
6313 * This simplistic check for printability is disabled
6314 * when we're doing password input, because some people
6315 * have control characters in their passwords.
6317 if (!pr
->echo
|| (c
>= ' ' && c
<= '~') ||
6318 ((unsigned char) c
>= 160)) {
6319 prompt_ensure_result_size(pr
, s
->pos
+ 1);
6320 pr
->result
[s
->pos
++] = c
;
6322 term_data(term
, 0, &c
, 1);
6330 if (s
->curr_prompt
< p
->n_prompts
) {
6331 return -1; /* more data required */
6335 return +1; /* all done */