10 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
11 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
12 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
13 #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
15 /* Product-order comparisons for rectangular block selection. */
16 #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
17 #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
19 #define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
20 #define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
24 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
25 #define CL_VT100 0x0002 /* VT100 */
26 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
27 #define CL_VT102 0x0008 /* VT102 */
28 #define CL_VT220 0x0010 /* VT220 */
29 #define CL_VT320 0x0020 /* VT320 */
30 #define CL_VT420 0x0040 /* VT420 */
31 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
32 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
33 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
34 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
35 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
37 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
38 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
39 #define TM_VT102 (TM_VT100AVO|CL_VT102)
40 #define TM_VT220 (TM_VT102|CL_VT220)
41 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
42 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
44 #define TM_PUTTY (0xFFFF)
46 #define UPDATE_DELAY ((TICKSPERSEC+49)/50)/* ticks to defer window update */
47 #define TBLINK_DELAY ((TICKSPERSEC*9+19)/20)/* ticks between text blinks*/
48 #define CBLINK_DELAY (CURSORBLINK) /* ticks between cursor blinks */
49 #define VBELL_DELAY (VBELL_TIMEOUT) /* visual bell timeout in ticks */
51 #define compatibility(x) \
52 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
53 term->termstate=TOPLEVEL; \
56 #define compatibility2(x,y) \
57 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
58 term->termstate=TOPLEVEL; \
62 #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
64 const char sco2ansicolour
[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
66 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
67 const wchar_t sel_nl
[] = SEL_NL
;
70 * Fetch the character at a particular position in a line array,
71 * for purposes of `wordtype'. The reason this isn't just a simple
72 * array reference is that if the character we find is UCSWIDE,
73 * then we must look one space further to the left.
75 #define UCSGET(a, x) \
76 ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr )
79 * Detect the various aliases of U+0020 SPACE.
81 #define IS_SPACE_CHR(chr) \
82 ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20))
87 #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0)
90 * Internal prototypes.
92 static void resizeline(Terminal
*, termline
*, int);
93 static termline
*lineptr(Terminal
*, int, int, int);
94 static void unlineptr(termline
*);
95 static void do_paint(Terminal
*, Context
, int);
96 static void erase_lots(Terminal
*, int, int, int);
97 static void swap_screen(Terminal
*, int, int, int);
98 static void update_sbar(Terminal
*);
99 static void deselect(Terminal
*);
100 static void term_print_finish(Terminal
*);
101 #ifdef OPTIMISE_SCROLL
102 static void scroll_display(Terminal
*, int, int, int);
103 #endif /* OPTIMISE_SCROLL */
105 static termline
*newline(Terminal
*term
, int cols
, int bce
)
110 line
= snew(termline
);
111 line
->chars
= snewn(cols
, termchar
);
112 for (j
= 0; j
< cols
; j
++)
113 line
->chars
[j
] = (bce ? term
->erase_char
: term
->basic_erase_char
);
114 line
->cols
= line
->size
= cols
;
115 line
->lattr
= LATTR_NORM
;
116 line
->temporary
= FALSE
;
122 static void freeline(termline
*line
)
130 static void unlineptr(termline
*line
)
138 * Diagnostic function: verify that a termline has a correct
139 * combining character structure.
141 * This is a performance-intensive check, so it's no longer enabled
144 static void cc_check(termline
*line
)
146 unsigned char *flags
;
149 assert(line
->size
>= line
->cols
);
151 flags
= snewn(line
->size
, unsigned char);
153 for (i
= 0; i
< line
->size
; i
++)
154 flags
[i
] = (i
< line
->cols
);
156 for (i
= 0; i
< line
->cols
; i
++) {
158 while (line
->chars
[j
].cc_next
) {
159 j
+= line
->chars
[j
].cc_next
;
160 assert(j
>= line
->cols
&& j
< line
->size
);
169 assert(j
>= line
->cols
&& j
< line
->size
);
172 if (line
->chars
[j
].cc_next
)
173 j
+= line
->chars
[j
].cc_next
;
180 for (i
= 0; i
< line
->size
; i
++)
181 j
+= (flags
[i
] != 0);
183 assert(j
== line
->size
);
190 * Add a combining character to a character cell.
192 static void add_cc(termline
*line
, int col
, unsigned long chr
)
196 assert(col
>= 0 && col
< line
->cols
);
199 * Start by extending the cols array if the free list is empty.
201 if (!line
->cc_free
) {
203 line
->size
+= 16 + (line
->size
- line
->cols
) / 2;
204 line
->chars
= sresize(line
->chars
, line
->size
, termchar
);
206 while (n
< line
->size
) {
207 if (n
+1 < line
->size
)
208 line
->chars
[n
].cc_next
= 1;
210 line
->chars
[n
].cc_next
= 0;
216 * Now walk the cc list of the cell in question.
218 while (line
->chars
[col
].cc_next
)
219 col
+= line
->chars
[col
].cc_next
;
222 * `col' now points at the last cc currently in this cell; so
223 * we simply add another one.
225 newcc
= line
->cc_free
;
226 if (line
->chars
[newcc
].cc_next
)
227 line
->cc_free
= newcc
+ line
->chars
[newcc
].cc_next
;
230 line
->chars
[newcc
].cc_next
= 0;
231 line
->chars
[newcc
].chr
= chr
;
232 line
->chars
[col
].cc_next
= newcc
- col
;
240 * Clear the combining character list in a character cell.
242 static void clear_cc(termline
*line
, int col
)
244 int oldfree
, origcol
= col
;
246 assert(col
>= 0 && col
< line
->cols
);
248 if (!line
->chars
[col
].cc_next
)
249 return; /* nothing needs doing */
251 oldfree
= line
->cc_free
;
252 line
->cc_free
= col
+ line
->chars
[col
].cc_next
;
253 while (line
->chars
[col
].cc_next
)
254 col
+= line
->chars
[col
].cc_next
;
256 line
->chars
[col
].cc_next
= oldfree
- col
;
258 line
->chars
[col
].cc_next
= 0;
260 line
->chars
[origcol
].cc_next
= 0;
268 * Compare two character cells for equality. Special case required
269 * in do_paint() where we override what we expect the chr and attr
272 static int termchars_equal_override(termchar
*a
, termchar
*b
,
273 unsigned long bchr
, unsigned long battr
)
278 if ((a
->attr
&~ DATTR_MASK
) != (battr
&~ DATTR_MASK
))
280 while (a
->cc_next
|| b
->cc_next
) {
281 if (!a
->cc_next
|| !b
->cc_next
)
282 return FALSE
; /* one cc-list ends, other does not */
285 if (a
->chr
!= b
->chr
)
291 static int termchars_equal(termchar
*a
, termchar
*b
)
293 return termchars_equal_override(a
, b
, b
->chr
, b
->attr
);
297 * Copy a character cell. (Requires a pointer to the destination
298 * termline, so as to access its free list.)
300 static void copy_termchar(termline
*destline
, int x
, termchar
*src
)
302 clear_cc(destline
, x
);
304 destline
->chars
[x
] = *src
; /* copy everything except cc-list */
305 destline
->chars
[x
].cc_next
= 0; /* and make sure this is zero */
307 while (src
->cc_next
) {
309 add_cc(destline
, x
, src
->chr
);
318 * Move a character cell within its termline.
320 static void move_termchar(termline
*line
, termchar
*dest
, termchar
*src
)
322 /* First clear the cc list from the original char, just in case. */
323 clear_cc(line
, dest
- line
->chars
);
325 /* Move the character cell and adjust its cc_next. */
326 *dest
= *src
; /* copy everything except cc-list */
328 dest
->cc_next
= src
->cc_next
- (dest
-src
);
330 /* Ensure the original cell doesn't have a cc list. */
339 * Compress and decompress a termline into an RLE-based format for
340 * storing in scrollback. (Since scrollback almost never needs to
341 * be modified and exists in huge quantities, this is a sensible
342 * tradeoff, particularly since it allows us to continue adding
343 * features to the main termchar structure without proportionally
344 * bloating the terminal emulator's memory footprint unless those
345 * features are in constant use.)
351 static void add(struct buf
*b
, unsigned char c
)
353 if (b
->len
>= b
->size
) {
354 b
->size
= (b
->len
* 3 / 2) + 512;
355 b
->data
= sresize(b
->data
, b
->size
, unsigned char);
357 b
->data
[b
->len
++] = c
;
359 static int get(struct buf
*b
)
361 return b
->data
[b
->len
++];
363 static void makerle(struct buf
*b
, termline
*ldata
,
364 void (*makeliteral
)(struct buf
*b
, termchar
*c
,
365 unsigned long *state
))
367 int hdrpos
, hdrsize
, n
, prevlen
, prevpos
, thislen
, thispos
, prev2
;
368 termchar
*c
= ldata
->chars
;
369 unsigned long state
= 0, oldstate
;
376 prevlen
= prevpos
= 0;
381 makeliteral(b
, c
++, &state
);
382 thislen
= b
->len
- thispos
;
383 if (thislen
== prevlen
&&
384 !memcmp(b
->data
+ prevpos
, b
->data
+ thispos
, thislen
)) {
386 * This literal precisely matches the previous one.
387 * Turn it into a run if it's worthwhile.
389 * With one-byte literals, it costs us two bytes to
390 * encode a run, plus another byte to write the header
391 * to resume normal output; so a three-element run is
392 * neutral, and anything beyond that is unconditionally
393 * worthwhile. With two-byte literals or more, even a
396 if (thislen
> 1 || prev2
) {
400 * It's worth encoding a run. Start at prevpos,
401 * unless hdrsize==0 in which case we can back up
402 * another one and start by overwriting hdrpos.
405 hdrsize
--; /* remove the literal at prevpos */
409 prevpos
-= prevlen
;/* and possibly another one */
413 assert(prevpos
== hdrpos
+ 1);
415 b
->len
= prevpos
+prevlen
;
417 memmove(b
->data
+ prevpos
+1, b
->data
+ prevpos
, prevlen
);
419 b
->len
= prevpos
+prevlen
+1;
421 * Terminate the previous run of ordinary
424 assert(hdrsize
>= 1 && hdrsize
<= 128);
425 b
->data
[hdrpos
] = hdrsize
- 1;
428 runlen
= prev2 ?
3 : 2;
430 while (n
> 0 && runlen
< 129) {
434 makeliteral(b
, c
, &state
);
435 tmplen
= b
->len
- tmppos
;
437 if (tmplen
!= thislen
||
438 memcmp(b
->data
+ runpos
+1, b
->data
+ tmppos
, tmplen
)) {
440 break; /* run over */
445 assert(runlen
>= 2 && runlen
<= 129);
446 b
->data
[runpos
] = runlen
+ 0x80 - 2;
451 /* And ensure this run doesn't interfere with the next. */
452 prevlen
= prevpos
= 0;
458 * Just flag that the previous two literals were
459 * identical, in case we find a third identical one
460 * we want to turn into a run.
473 * This character isn't (yet) part of a run. Add it to
477 if (hdrsize
== 128) {
478 b
->data
[hdrpos
] = hdrsize
- 1;
482 prevlen
= prevpos
= 0;
491 assert(hdrsize
<= 128);
492 b
->data
[hdrpos
] = hdrsize
- 1;
497 static void makeliteral_chr(struct buf
*b
, termchar
*c
, unsigned long *state
)
500 * My encoding for characters is UTF-8-like, in that it stores
501 * 7-bit ASCII in one byte and uses high-bit-set bytes as
502 * introducers to indicate a longer sequence. However, it's
503 * unlike UTF-8 in that it doesn't need to be able to
504 * resynchronise, and therefore I don't want to waste two bits
505 * per byte on having recognisable continuation characters.
506 * Also I don't want to rule out the possibility that I may one
507 * day use values 0x80000000-0xFFFFFFFF for interesting
508 * purposes, so unlike UTF-8 I need a full 32-bit range.
509 * Accordingly, here is my encoding:
511 * 00000000-0000007F: 0xxxxxxx (but see below)
512 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
513 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
514 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
515 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
517 * (`Z' is like `x' but is always going to be zero since the
518 * values I'm encoding don't go above 2^32. In principle the
519 * five-byte form of the encoding could extend to 2^35, and
520 * there could be six-, seven-, eight- and nine-byte forms as
521 * well to allow up to 64-bit values to be encoded. But that's
522 * completely unnecessary for these purposes!)
524 * The encoding as written above would be very simple, except
525 * that 7-bit ASCII can occur in several different ways in the
526 * terminal data; sometimes it crops up in the D800 page
527 * (CSET_ASCII) but at other times it's in the 0000 page (real
528 * Unicode). Therefore, this encoding is actually _stateful_:
529 * the one-byte encoding of 00-7F actually indicates `reuse the
530 * upper three bytes of the last character', and to encode an
531 * absolute value of 00-7F you need to use the two-byte form
534 if ((c
->chr
& ~0x7F) == *state
) {
535 add(b
, (unsigned char)(c
->chr
& 0x7F));
536 } else if (c
->chr
< 0x4000) {
537 add(b
, (unsigned char)(((c
->chr
>> 8) & 0x3F) | 0x80));
538 add(b
, (unsigned char)(c
->chr
& 0xFF));
539 } else if (c
->chr
< 0x200000) {
540 add(b
, (unsigned char)(((c
->chr
>> 16) & 0x1F) | 0xC0));
541 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
542 add(b
, (unsigned char)(c
->chr
& 0xFF));
543 } else if (c
->chr
< 0x10000000) {
544 add(b
, (unsigned char)(((c
->chr
>> 24) & 0x0F) | 0xE0));
545 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
546 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
547 add(b
, (unsigned char)(c
->chr
& 0xFF));
550 add(b
, (unsigned char)((c
->chr
>> 24) & 0xFF));
551 add(b
, (unsigned char)((c
->chr
>> 16) & 0xFF));
552 add(b
, (unsigned char)((c
->chr
>> 8) & 0xFF));
553 add(b
, (unsigned char)(c
->chr
& 0xFF));
555 *state
= c
->chr
& ~0xFF;
557 static void makeliteral_attr(struct buf
*b
, termchar
*c
, unsigned long *state
)
560 * My encoding for attributes is 16-bit-granular and assumes
561 * that the top bit of the word is never required. I either
562 * store a two-byte value with the top bit clear (indicating
563 * just that value), or a four-byte value with the top bit set
564 * (indicating the same value with its top bit clear).
566 * However, first I permute the bits of the attribute value, so
567 * that the eight bits of colour (four in each of fg and bg)
568 * which are never non-zero unless xterm 256-colour mode is in
569 * use are placed higher up the word than everything else. This
570 * ensures that attribute values remain 16-bit _unless_ the
571 * user uses extended colour.
573 unsigned attr
, colourbits
;
577 assert(ATTR_BGSHIFT
> ATTR_FGSHIFT
);
579 colourbits
= (attr
>> (ATTR_BGSHIFT
+ 4)) & 0xF;
581 colourbits
|= (attr
>> (ATTR_FGSHIFT
+ 4)) & 0xF;
583 attr
= (((attr
>> (ATTR_BGSHIFT
+ 8)) << (ATTR_BGSHIFT
+ 4)) |
584 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
585 attr
= (((attr
>> (ATTR_FGSHIFT
+ 8)) << (ATTR_FGSHIFT
+ 4)) |
586 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
588 attr
|= (colourbits
<< (32-9));
591 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
592 add(b
, (unsigned char)(attr
& 0xFF));
594 add(b
, (unsigned char)(((attr
>> 24) & 0x7F) | 0x80));
595 add(b
, (unsigned char)((attr
>> 16) & 0xFF));
596 add(b
, (unsigned char)((attr
>> 8) & 0xFF));
597 add(b
, (unsigned char)(attr
& 0xFF));
600 static void makeliteral_cc(struct buf
*b
, termchar
*c
, unsigned long *state
)
603 * For combining characters, I just encode a bunch of ordinary
604 * chars using makeliteral_chr, and terminate with a \0
605 * character (which I know won't come up as a combining char
608 * I don't use the stateful encoding in makeliteral_chr.
610 unsigned long zstate
;
619 makeliteral_chr(b
, c
, &zstate
);
624 makeliteral_chr(b
, &z
, &zstate
);
627 static termline
*decompressline(unsigned char *data
, int *bytes_used
);
629 static unsigned char *compressline(termline
*ldata
)
631 struct buf buffer
= { NULL
, 0, 0 }, *b
= &buffer
;
634 * First, store the column count, 7 bits at a time, least
635 * significant `digit' first, with the high bit set on all but
641 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
644 add(b
, (unsigned char)(n
));
648 * Next store the lattrs; same principle.
651 int n
= ldata
->lattr
;
653 add(b
, (unsigned char)((n
& 0x7F) | 0x80));
656 add(b
, (unsigned char)(n
));
660 * Now we store a sequence of separate run-length encoded
661 * fragments, each containing exactly as many symbols as there
662 * are columns in the ldata.
664 * All of these have a common basic format:
666 * - a byte 00-7F indicates that X+1 literals follow it
667 * - a byte 80-FF indicates that a single literal follows it
668 * and expects to be repeated (X-0x80)+2 times.
670 * The format of the `literals' varies between the fragments.
672 makerle(b
, ldata
, makeliteral_chr
);
673 makerle(b
, ldata
, makeliteral_attr
);
674 makerle(b
, ldata
, makeliteral_cc
);
677 * Diagnostics: ensure that the compressed data really does
678 * decompress to the right thing.
680 * This is a bit performance-heavy for production code.
683 #ifndef CHECK_SB_COMPRESSION
689 #ifdef DIAGNOSTIC_SB_COMPRESSION
690 for (i
= 0; i
< b
->len
; i
++) {
691 printf(" %02x ", b
->data
[i
]);
696 dcl
= decompressline(b
->data
, &dused
);
697 assert(b
->len
== dused
);
698 assert(ldata
->cols
== dcl
->cols
);
699 assert(ldata
->lattr
== dcl
->lattr
);
700 for (i
= 0; i
< ldata
->cols
; i
++)
701 assert(termchars_equal(&ldata
->chars
[i
], &dcl
->chars
[i
]));
703 #ifdef DIAGNOSTIC_SB_COMPRESSION
704 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
705 ldata
->cols
, 4 * ldata
->cols
, dused
,
706 (double)dused
/ (4 * ldata
->cols
));
712 #endif /* TERM_CC_DIAGS */
715 * Trim the allocated memory so we don't waste any, and return.
717 return sresize(b
->data
, b
->len
, unsigned char);
720 static void readrle(struct buf
*b
, termline
*ldata
,
721 void (*readliteral
)(struct buf
*b
, termchar
*c
,
722 termline
*ldata
, unsigned long *state
))
725 unsigned long state
= 0;
727 while (n
< ldata
->cols
) {
733 int pos
= b
->len
, count
= hdr
+ 2 - 0x80;
735 assert(n
< ldata
->cols
);
737 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
741 /* Just a sequence of consecutive literals. */
745 assert(n
< ldata
->cols
);
746 readliteral(b
, ldata
->chars
+ n
, ldata
, &state
);
752 assert(n
== ldata
->cols
);
754 static void readliteral_chr(struct buf
*b
, termchar
*c
, termline
*ldata
,
755 unsigned long *state
)
760 * 00000000-0000007F: 0xxxxxxx
761 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
762 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
763 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
764 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
769 c
->chr
= byte
| *state
;
770 } else if (byte
< 0xC0) {
771 c
->chr
= (byte
&~ 0xC0) << 8;
773 } else if (byte
< 0xE0) {
774 c
->chr
= (byte
&~ 0xE0) << 16;
775 c
->chr
|= get(b
) << 8;
777 } else if (byte
< 0xF0) {
778 c
->chr
= (byte
&~ 0xF0) << 24;
779 c
->chr
|= get(b
) << 16;
780 c
->chr
|= get(b
) << 8;
783 assert(byte
== 0xF0);
784 c
->chr
= get(b
) << 24;
785 c
->chr
|= get(b
) << 16;
786 c
->chr
|= get(b
) << 8;
789 *state
= c
->chr
& ~0xFF;
791 static void readliteral_attr(struct buf
*b
, termchar
*c
, termline
*ldata
,
792 unsigned long *state
)
794 unsigned val
, attr
, colourbits
;
806 colourbits
= (val
>> (32-9)) & 0xFF;
807 attr
= (val
& ((1<<(32-9))-1));
809 attr
= (((attr
>> (ATTR_FGSHIFT
+ 4)) << (ATTR_FGSHIFT
+ 8)) |
810 (attr
& ((1 << (ATTR_FGSHIFT
+ 4))-1)));
811 attr
= (((attr
>> (ATTR_BGSHIFT
+ 4)) << (ATTR_BGSHIFT
+ 8)) |
812 (attr
& ((1 << (ATTR_BGSHIFT
+ 4))-1)));
814 attr
|= (colourbits
>> 4) << (ATTR_BGSHIFT
+ 4);
815 attr
|= (colourbits
& 0xF) << (ATTR_FGSHIFT
+ 4);
819 static void readliteral_cc(struct buf
*b
, termchar
*c
, termline
*ldata
,
820 unsigned long *state
)
823 unsigned long zstate
;
824 int x
= c
- ldata
->chars
;
830 readliteral_chr(b
, &n
, ldata
, &zstate
);
833 add_cc(ldata
, x
, n
.chr
);
837 static termline
*decompressline(unsigned char *data
, int *bytes_used
)
839 int ncols
, byte
, shift
;
840 struct buf buffer
, *b
= &buffer
;
847 * First read in the column count.
852 ncols
|= (byte
& 0x7F) << shift
;
854 } while (byte
& 0x80);
857 * Now create the output termline.
859 ldata
= snew(termline
);
860 ldata
->chars
= snewn(ncols
, termchar
);
861 ldata
->cols
= ldata
->size
= ncols
;
862 ldata
->temporary
= TRUE
;
866 * We must set all the cc pointers in ldata->chars to 0 right
867 * now, so that cc diagnostics that verify the integrity of the
868 * whole line will make sense while we're in the middle of
873 for (i
= 0; i
< ldata
->cols
; i
++)
874 ldata
->chars
[i
].cc_next
= 0;
878 * Now read in the lattr.
880 ldata
->lattr
= shift
= 0;
883 ldata
->lattr
|= (byte
& 0x7F) << shift
;
885 } while (byte
& 0x80);
888 * Now we read in each of the RLE streams in turn.
890 readrle(b
, ldata
, readliteral_chr
);
891 readrle(b
, ldata
, readliteral_attr
);
892 readrle(b
, ldata
, readliteral_cc
);
894 /* Return the number of bytes read, for diagnostic purposes. */
896 *bytes_used
= b
->len
;
902 * Resize a line to make it `cols' columns wide.
904 static void resizeline(Terminal
*term
, termline
*line
, int cols
)
908 if (line
->cols
!= cols
) {
910 oldcols
= line
->cols
;
913 * This line is the wrong length, which probably means it
914 * hasn't been accessed since a resize. Resize it now.
916 * First, go through all the characters that will be thrown
917 * out in the resize (if we're shrinking the line) and
918 * return their cc lists to the cc free list.
920 for (i
= cols
; i
< oldcols
; i
++)
924 * If we're shrinking the line, we now bodily move the
925 * entire cc section from where it started to where it now
926 * needs to be. (We have to do this before the resize, so
927 * that the data we're copying is still there. However, if
928 * we're expanding, we have to wait until _after_ the
929 * resize so that the space we're copying into is there.)
932 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
933 (line
->size
- line
->cols
) * TSIZE
);
936 * Now do the actual resize, leaving the _same_ amount of
937 * cc space as there was to begin with.
939 line
->size
+= cols
- oldcols
;
940 line
->chars
= sresize(line
->chars
, line
->size
, TTYPE
);
944 * If we're expanding the line, _now_ we move the cc
948 memmove(line
->chars
+ cols
, line
->chars
+ oldcols
,
949 (line
->size
- line
->cols
) * TSIZE
);
952 * Go through what's left of the original line, and adjust
953 * the first cc_next pointer in each list. (All the
954 * subsequent ones are still valid because they are
955 * relative offsets within the cc block.) Also do the same
956 * to the head of the cc_free list.
958 for (i
= 0; i
< oldcols
&& i
< cols
; i
++)
959 if (line
->chars
[i
].cc_next
)
960 line
->chars
[i
].cc_next
+= cols
- oldcols
;
962 line
->cc_free
+= cols
- oldcols
;
965 * And finally fill in the new space with erase chars. (We
966 * don't have to worry about cc lists here, because we
967 * _know_ the erase char doesn't have one.)
969 for (i
= oldcols
; i
< cols
; i
++)
970 line
->chars
[i
] = term
->basic_erase_char
;
979 * Get the number of lines in the scrollback.
981 static int sblines(Terminal
*term
)
983 int sblines
= count234(term
->scrollback
);
984 if (term
->cfg
.erase_to_scrollback
&&
985 term
->alt_which
&& term
->alt_screen
) {
986 sblines
+= term
->alt_sblines
;
992 * Retrieve a line of the screen or of the scrollback, according to
993 * whether the y coordinate is non-negative or negative
996 static termline
*lineptr(Terminal
*term
, int y
, int lineno
, int screen
)
1003 whichtree
= term
->screen
;
1010 if (term
->cfg
.erase_to_scrollback
&&
1011 term
->alt_which
&& term
->alt_screen
) {
1012 altlines
= term
->alt_sblines
;
1014 if (y
< -altlines
) {
1015 whichtree
= term
->scrollback
;
1016 treeindex
= y
+ altlines
+ count234(term
->scrollback
);
1018 whichtree
= term
->alt_screen
;
1019 treeindex
= y
+ term
->alt_sblines
;
1020 /* treeindex = y + count234(term->alt_screen); */
1023 if (whichtree
== term
->scrollback
) {
1024 unsigned char *cline
= index234(whichtree
, treeindex
);
1025 line
= decompressline(cline
, NULL
);
1027 line
= index234(whichtree
, treeindex
);
1030 /* We assume that we don't screw up and retrieve something out of range. */
1032 fatalbox("line==NULL in terminal.c\n"
1033 "lineno=%d y=%d w=%d h=%d\n"
1034 "count(scrollback=%p)=%d\n"
1035 "count(screen=%p)=%d\n"
1036 "count(alt=%p)=%d alt_sblines=%d\n"
1037 "whichtree=%p treeindex=%d\n\n"
1038 "Please contact <putty@projects.tartarus.org> "
1039 "and pass on the above information.",
1040 lineno
, y
, term
->cols
, term
->rows
,
1041 term
->scrollback
, count234(term
->scrollback
),
1042 term
->screen
, count234(term
->screen
),
1043 term
->alt_screen
, count234(term
->alt_screen
), term
->alt_sblines
,
1044 whichtree
, treeindex
);
1046 assert(line
!= NULL
);
1048 resizeline(term
, line
, term
->cols
);
1049 /* FIXME: should we sort the compressed scrollback out here? */
1054 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1055 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1057 static void term_schedule_tblink(Terminal
*term
);
1058 static void term_schedule_cblink(Terminal
*term
);
1060 static void term_timer(void *ctx
, long now
)
1062 Terminal
*term
= (Terminal
*)ctx
;
1065 if (term
->tblink_pending
&& now
- term
->next_tblink
>= 0) {
1066 term
->tblinker
= !term
->tblinker
;
1067 term
->tblink_pending
= FALSE
;
1068 term_schedule_tblink(term
);
1072 if (term
->cblink_pending
&& now
- term
->next_cblink
>= 0) {
1073 term
->cblinker
= !term
->cblinker
;
1074 term
->cblink_pending
= FALSE
;
1075 term_schedule_cblink(term
);
1079 if (term
->in_vbell
&& now
- term
->vbell_end
>= 0) {
1080 term
->in_vbell
= FALSE
;
1085 (term
->window_update_pending
&& now
- term
->next_update
>= 0))
1089 static void term_schedule_update(Terminal
*term
)
1091 if (!term
->window_update_pending
) {
1092 term
->window_update_pending
= TRUE
;
1093 term
->next_update
= schedule_timer(UPDATE_DELAY
, term_timer
, term
);
1098 * Call this whenever the terminal window state changes, to queue
1101 static void seen_disp_event(Terminal
*term
)
1103 term
->seen_disp_event
= TRUE
; /* for scrollback-reset-on-activity */
1104 term_schedule_update(term
);
1108 * Call when the terminal's blinking-text settings change, or when
1109 * a text blink has just occurred.
1111 static void term_schedule_tblink(Terminal
*term
)
1113 if (term
->blink_is_real
) {
1114 if (!term
->tblink_pending
)
1115 term
->next_tblink
= schedule_timer(TBLINK_DELAY
, term_timer
, term
);
1116 term
->tblink_pending
= TRUE
;
1118 term
->tblinker
= 1; /* reset when not in use */
1119 term
->tblink_pending
= FALSE
;
1124 * Likewise with cursor blinks.
1126 static void term_schedule_cblink(Terminal
*term
)
1128 if (term
->cfg
.blink_cur
&& term
->has_focus
) {
1129 if (!term
->cblink_pending
)
1130 term
->next_cblink
= schedule_timer(CBLINK_DELAY
, term_timer
, term
);
1131 term
->cblink_pending
= TRUE
;
1133 term
->cblinker
= 1; /* reset when not in use */
1134 term
->cblink_pending
= FALSE
;
1139 * Call to reset cursor blinking on new output.
1141 static void term_reset_cblink(Terminal
*term
)
1143 seen_disp_event(term
);
1145 term
->cblink_pending
= FALSE
;
1146 term_schedule_cblink(term
);
1150 * Call to begin a visual bell.
1152 static void term_schedule_vbell(Terminal
*term
, int already_started
,
1155 long ticks_already_gone
;
1157 if (already_started
)
1158 ticks_already_gone
= GETTICKCOUNT() - startpoint
;
1160 ticks_already_gone
= 0;
1162 if (ticks_already_gone
< VBELL_DELAY
) {
1163 term
->in_vbell
= TRUE
;
1164 term
->vbell_end
= schedule_timer(VBELL_DELAY
- ticks_already_gone
,
1167 term
->in_vbell
= FALSE
;
1172 * Set up power-on settings for the terminal.
1174 static void power_on(Terminal
*term
)
1176 term
->curs
.x
= term
->curs
.y
= 0;
1177 term
->alt_x
= term
->alt_y
= 0;
1178 term
->savecurs
.x
= term
->savecurs
.y
= 0;
1179 term
->alt_t
= term
->marg_t
= 0;
1180 if (term
->rows
!= -1)
1181 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
1183 term
->alt_b
= term
->marg_b
= 0;
1184 if (term
->cols
!= -1) {
1186 for (i
= 0; i
< term
->cols
; i
++)
1187 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1189 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1190 term
->alt_ins
= term
->insert
= FALSE
;
1191 term
->alt_wnext
= term
->wrapnext
= term
->save_wnext
= FALSE
;
1192 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1193 term
->alt_cset
= term
->cset
= term
->save_cset
= 0;
1194 term
->alt_utf
= term
->utf
= term
->save_utf
= 0;
1195 term
->utf_state
= 0;
1196 term
->alt_sco_acs
= term
->sco_acs
= term
->save_sco_acs
= 0;
1197 term
->cset_attr
[0] = term
->cset_attr
[1] = term
->save_csattr
= CSET_ASCII
;
1199 term
->in_vbell
= FALSE
;
1200 term
->cursor_on
= 1;
1201 term
->big_cursor
= 0;
1202 term
->default_attr
= term
->save_attr
= term
->curr_attr
= ATTR_DEFAULT
;
1203 term
->term_editing
= term
->term_echoing
= FALSE
;
1204 term
->app_cursor_keys
= term
->cfg
.app_cursor
;
1205 term
->app_keypad_keys
= term
->cfg
.app_keypad
;
1206 term
->use_bce
= term
->cfg
.bce
;
1207 term
->blink_is_real
= term
->cfg
.blinktext
;
1208 term
->erase_char
= term
->basic_erase_char
;
1209 term
->alt_which
= 0;
1210 term_print_finish(term
);
1213 for (i
= 0; i
< 256; i
++)
1214 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1217 swap_screen(term
, 1, FALSE
, FALSE
);
1218 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1219 swap_screen(term
, 0, FALSE
, FALSE
);
1220 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1222 term_schedule_tblink(term
);
1223 term_schedule_cblink(term
);
1227 * Force a screen update.
1229 void term_update(Terminal
*term
)
1233 term
->window_update_pending
= FALSE
;
1235 ctx
= get_ctx(term
->frontend
);
1237 int need_sbar_update
= term
->seen_disp_event
;
1238 if (term
->seen_disp_event
&& term
->cfg
.scroll_on_disp
) {
1239 term
->disptop
= 0; /* return to main screen */
1240 term
->seen_disp_event
= 0;
1241 need_sbar_update
= TRUE
;
1244 if (need_sbar_update
)
1246 do_paint(term
, ctx
, TRUE
);
1247 sys_cursor(term
->frontend
, term
->curs
.x
, term
->curs
.y
- term
->disptop
);
1253 * Called from front end when a keypress occurs, to trigger
1254 * anything magical that needs to happen in that situation.
1256 void term_seen_key_event(Terminal
*term
)
1259 * On any keypress, clear the bell overload mechanism
1260 * completely, on the grounds that large numbers of
1261 * beeps coming from deliberate key action are likely
1262 * to be intended (e.g. beeps from filename completion
1263 * blocking repeatedly).
1265 term
->beep_overloaded
= FALSE
;
1266 while (term
->beephead
) {
1267 struct beeptime
*tmp
= term
->beephead
;
1268 term
->beephead
= tmp
->next
;
1271 term
->beeptail
= NULL
;
1275 * Reset the scrollback on keypress, if we're doing that.
1277 if (term
->cfg
.scroll_on_key
) {
1278 term
->disptop
= 0; /* return to main screen */
1279 seen_disp_event(term
);
1284 * Same as power_on(), but an external function.
1286 void term_pwron(Terminal
*term
)
1289 if (term
->ldisc
) /* cause ldisc to notice changes */
1290 ldisc_send(term
->ldisc
, NULL
, 0, 0);
1296 static void set_erase_char(Terminal
*term
)
1298 term
->erase_char
= term
->basic_erase_char
;
1300 term
->erase_char
.attr
= (term
->curr_attr
&
1301 (ATTR_FGMASK
| ATTR_BGMASK
));
1305 * When the user reconfigures us, we need to check the forbidden-
1306 * alternate-screen config option, disable raw mouse mode if the
1307 * user has disabled mouse reporting, and abandon a print job if
1308 * the user has disabled printing.
1310 void term_reconfig(Terminal
*term
, Config
*cfg
)
1313 * Before adopting the new config, check all those terminal
1314 * settings which control power-on defaults; and if they've
1315 * changed, we will modify the current state as well as the
1316 * default one. The full list is: Auto wrap mode, DEC Origin
1317 * Mode, BCE, blinking text, character classes.
1319 int reset_wrap
, reset_decom
, reset_bce
, reset_tblink
, reset_charclass
;
1322 reset_wrap
= (term
->cfg
.wrap_mode
!= cfg
->wrap_mode
);
1323 reset_decom
= (term
->cfg
.dec_om
!= cfg
->dec_om
);
1324 reset_bce
= (term
->cfg
.bce
!= cfg
->bce
);
1325 reset_tblink
= (term
->cfg
.blinktext
!= cfg
->blinktext
);
1326 reset_charclass
= 0;
1327 for (i
= 0; i
< lenof(term
->cfg
.wordness
); i
++)
1328 if (term
->cfg
.wordness
[i
] != cfg
->wordness
[i
])
1329 reset_charclass
= 1;
1332 * If the bidi or shaping settings have changed, flush the bidi
1335 if (term
->cfg
.arabicshaping
!= cfg
->arabicshaping
||
1336 term
->cfg
.bidi
!= cfg
->bidi
) {
1337 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1338 sfree(term
->pre_bidi_cache
[i
].chars
);
1339 sfree(term
->post_bidi_cache
[i
].chars
);
1340 term
->pre_bidi_cache
[i
].width
= -1;
1341 term
->pre_bidi_cache
[i
].chars
= NULL
;
1342 term
->post_bidi_cache
[i
].width
= -1;
1343 term
->post_bidi_cache
[i
].chars
= NULL
;
1347 term
->cfg
= *cfg
; /* STRUCTURE COPY */
1350 term
->alt_wrap
= term
->wrap
= term
->cfg
.wrap_mode
;
1352 term
->alt_om
= term
->dec_om
= term
->cfg
.dec_om
;
1354 term
->use_bce
= term
->cfg
.bce
;
1355 set_erase_char(term
);
1358 term
->blink_is_real
= term
->cfg
.blinktext
;
1360 if (reset_charclass
)
1361 for (i
= 0; i
< 256; i
++)
1362 term
->wordness
[i
] = term
->cfg
.wordness
[i
];
1364 if (term
->cfg
.no_alt_screen
)
1365 swap_screen(term
, 0, FALSE
, FALSE
);
1366 if (term
->cfg
.no_mouse_rep
) {
1367 term
->xterm_mouse
= 0;
1368 set_raw_mouse_mode(term
->frontend
, 0);
1370 if (term
->cfg
.no_remote_charset
) {
1371 term
->cset_attr
[0] = term
->cset_attr
[1] = CSET_ASCII
;
1372 term
->sco_acs
= term
->alt_sco_acs
= 0;
1375 if (!*term
->cfg
.printer
) {
1376 term_print_finish(term
);
1378 term_schedule_tblink(term
);
1379 term_schedule_cblink(term
);
1383 * Clear the scrollback.
1385 void term_clrsb(Terminal
*term
)
1387 unsigned char *line
;
1389 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
) {
1390 sfree(line
); /* this is compressed data, not a termline */
1392 term
->tempsblines
= 0;
1393 term
->alt_sblines
= 0;
1398 * Initialise the terminal.
1400 Terminal
*term_init(Config
*mycfg
, struct unicode_data
*ucsdata
,
1406 * Allocate a new Terminal structure and initialise the fields
1409 term
= snew(Terminal
);
1410 term
->frontend
= frontend
;
1411 term
->ucsdata
= ucsdata
;
1412 term
->cfg
= *mycfg
; /* STRUCTURE COPY */
1413 term
->logctx
= NULL
;
1414 term
->compatibility_level
= TM_PUTTY
;
1415 strcpy(term
->id_string
, "\033[?6c");
1416 term
->cblink_pending
= term
->tblink_pending
= FALSE
;
1417 term
->paste_buffer
= NULL
;
1418 term
->paste_len
= 0;
1419 term
->last_paste
= 0;
1420 bufchain_init(&term
->inbuf
);
1421 bufchain_init(&term
->printer_buf
);
1422 term
->printing
= term
->only_printing
= FALSE
;
1423 term
->print_job
= NULL
;
1424 term
->vt52_mode
= FALSE
;
1425 term
->cr_lf_return
= FALSE
;
1426 term
->seen_disp_event
= FALSE
;
1427 term
->xterm_mouse
= term
->mouse_is_down
= FALSE
;
1428 term
->reset_132
= FALSE
;
1429 term
->cblinker
= term
->tblinker
= 0;
1430 term
->has_focus
= 1;
1431 term
->repeat_off
= FALSE
;
1432 term
->termstate
= TOPLEVEL
;
1433 term
->selstate
= NO_SELECTION
;
1436 term
->screen
= term
->alt_screen
= term
->scrollback
= NULL
;
1437 term
->tempsblines
= 0;
1438 term
->alt_sblines
= 0;
1440 term
->disptext
= NULL
;
1441 term
->dispcursx
= term
->dispcursy
= -1;
1444 term
->rows
= term
->cols
= -1;
1446 term
->beephead
= term
->beeptail
= NULL
;
1447 #ifdef OPTIMISE_SCROLL
1448 term
->scrollhead
= term
->scrolltail
= NULL
;
1449 #endif /* OPTIMISE_SCROLL */
1451 term
->lastbeep
= FALSE
;
1452 term
->beep_overloaded
= FALSE
;
1453 term
->attr_mask
= 0xffffffff;
1454 term
->resize_fn
= NULL
;
1455 term
->resize_ctx
= NULL
;
1456 term
->in_term_out
= FALSE
;
1458 term
->ltemp_size
= 0;
1459 term
->wcFrom
= NULL
;
1461 term
->wcFromTo_size
= 0;
1463 term
->window_update_pending
= FALSE
;
1465 term
->bidi_cache_size
= 0;
1466 term
->pre_bidi_cache
= term
->post_bidi_cache
= NULL
;
1469 term
->basic_erase_char
.chr
= CSET_ASCII
| ' ';
1470 term
->basic_erase_char
.attr
= ATTR_DEFAULT
;
1471 term
->basic_erase_char
.cc_next
= 0;
1472 term
->erase_char
= term
->basic_erase_char
;
1477 void term_free(Terminal
*term
)
1480 struct beeptime
*beep
;
1483 while ((line
= delpos234(term
->scrollback
, 0)) != NULL
)
1484 sfree(line
); /* compressed data, not a termline */
1485 freetree234(term
->scrollback
);
1486 while ((line
= delpos234(term
->screen
, 0)) != NULL
)
1488 freetree234(term
->screen
);
1489 while ((line
= delpos234(term
->alt_screen
, 0)) != NULL
)
1491 freetree234(term
->alt_screen
);
1492 if (term
->disptext
) {
1493 for (i
= 0; i
< term
->rows
; i
++)
1494 freeline(term
->disptext
[i
]);
1496 sfree(term
->disptext
);
1497 while (term
->beephead
) {
1498 beep
= term
->beephead
;
1499 term
->beephead
= beep
->next
;
1502 bufchain_clear(&term
->inbuf
);
1504 printer_finish_job(term
->print_job
);
1505 bufchain_clear(&term
->printer_buf
);
1506 sfree(term
->paste_buffer
);
1508 sfree(term
->wcFrom
);
1511 for (i
= 0; i
< term
->bidi_cache_size
; i
++) {
1512 sfree(term
->pre_bidi_cache
[i
].chars
);
1513 sfree(term
->post_bidi_cache
[i
].chars
);
1515 sfree(term
->pre_bidi_cache
);
1516 sfree(term
->post_bidi_cache
);
1518 expire_timer_context(term
);
1524 * Set up the terminal for a given size.
1526 void term_size(Terminal
*term
, int newrows
, int newcols
, int newsavelines
)
1529 termline
**newdisp
, *line
;
1530 int i
, j
, oldrows
= term
->rows
;
1532 int save_alt_which
= term
->alt_which
;
1534 if (newrows
== term
->rows
&& newcols
== term
->cols
&&
1535 newsavelines
== term
->savelines
)
1536 return; /* nothing to do */
1538 /* Behave sensibly if we're given zero (or negative) rows/cols */
1540 if (newrows
< 1) newrows
= 1;
1541 if (newcols
< 1) newcols
= 1;
1544 swap_screen(term
, 0, FALSE
, FALSE
);
1546 term
->alt_t
= term
->marg_t
= 0;
1547 term
->alt_b
= term
->marg_b
= newrows
- 1;
1549 if (term
->rows
== -1) {
1550 term
->scrollback
= newtree234(NULL
);
1551 term
->screen
= newtree234(NULL
);
1552 term
->tempsblines
= 0;
1557 * Resize the screen and scrollback. We only need to shift
1558 * lines around within our data structures, because lineptr()
1559 * will take care of resizing each individual line if
1562 * - If the new screen is longer, we shunt lines in from temporary
1563 * scrollback if possible, otherwise we add new blank lines at
1566 * - If the new screen is shorter, we remove any blank lines at
1567 * the bottom if possible, otherwise shunt lines above the cursor
1568 * to scrollback if possible, otherwise delete lines below the
1571 * - Then, if the new scrollback length is less than the
1572 * amount of scrollback we actually have, we must throw some
1575 sblen
= count234(term
->scrollback
);
1576 /* Do this loop to expand the screen if newrows > rows */
1577 assert(term
->rows
== count234(term
->screen
));
1578 while (term
->rows
< newrows
) {
1579 if (term
->tempsblines
> 0) {
1580 unsigned char *cline
;
1581 /* Insert a line from the scrollback at the top of the screen. */
1582 assert(sblen
>= term
->tempsblines
);
1583 cline
= delpos234(term
->scrollback
, --sblen
);
1584 line
= decompressline(cline
, NULL
);
1586 line
->temporary
= FALSE
; /* reconstituted line is now real */
1587 term
->tempsblines
-= 1;
1588 addpos234(term
->screen
, line
, 0);
1590 term
->savecurs
.y
+= 1;
1592 /* Add a new blank line at the bottom of the screen. */
1593 line
= newline(term
, newcols
, FALSE
);
1594 addpos234(term
->screen
, line
, count234(term
->screen
));
1598 /* Do this loop to shrink the screen if newrows < rows */
1599 while (term
->rows
> newrows
) {
1600 if (term
->curs
.y
< term
->rows
- 1) {
1601 /* delete bottom row, unless it contains the cursor */
1602 sfree(delpos234(term
->screen
, term
->rows
- 1));
1604 /* push top row to scrollback */
1605 line
= delpos234(term
->screen
, 0);
1606 addpos234(term
->scrollback
, compressline(line
), sblen
++);
1608 term
->tempsblines
+= 1;
1610 term
->savecurs
.y
-= 1;
1614 assert(term
->rows
== newrows
);
1615 assert(count234(term
->screen
) == newrows
);
1617 /* Delete any excess lines from the scrollback. */
1618 while (sblen
> newsavelines
) {
1619 line
= delpos234(term
->scrollback
, 0);
1623 if (sblen
< term
->tempsblines
)
1624 term
->tempsblines
= sblen
;
1625 assert(count234(term
->scrollback
) <= newsavelines
);
1626 assert(count234(term
->scrollback
) >= term
->tempsblines
);
1629 /* Make a new displayed text buffer. */
1630 newdisp
= snewn(newrows
, termline
*);
1631 for (i
= 0; i
< newrows
; i
++) {
1632 newdisp
[i
] = newline(term
, newcols
, FALSE
);
1633 for (j
= 0; j
< newcols
; j
++)
1634 newdisp
[i
]->chars
[j
].attr
= ATTR_INVALID
;
1636 if (term
->disptext
) {
1637 for (i
= 0; i
< oldrows
; i
++)
1638 freeline(term
->disptext
[i
]);
1640 sfree(term
->disptext
);
1641 term
->disptext
= newdisp
;
1642 term
->dispcursx
= term
->dispcursy
= -1;
1644 /* Make a new alternate screen. */
1645 newalt
= newtree234(NULL
);
1646 for (i
= 0; i
< newrows
; i
++) {
1647 line
= newline(term
, newcols
, TRUE
);
1648 addpos234(newalt
, line
, i
);
1650 if (term
->alt_screen
) {
1651 while (NULL
!= (line
= delpos234(term
->alt_screen
, 0)))
1653 freetree234(term
->alt_screen
);
1655 term
->alt_screen
= newalt
;
1656 term
->alt_sblines
= 0;
1658 term
->tabs
= sresize(term
->tabs
, newcols
, unsigned char);
1661 for (i
= (term
->cols
> 0 ? term
->cols
: 0); i
< newcols
; i
++)
1662 term
->tabs
[i
] = (i
% 8 == 0 ? TRUE
: FALSE
);
1665 /* Check that the cursor positions are still valid. */
1666 if (term
->savecurs
.y
< 0)
1667 term
->savecurs
.y
= 0;
1668 if (term
->savecurs
.y
>= newrows
)
1669 term
->savecurs
.y
= newrows
- 1;
1670 if (term
->curs
.y
< 0)
1672 if (term
->curs
.y
>= newrows
)
1673 term
->curs
.y
= newrows
- 1;
1674 if (term
->curs
.x
>= newcols
)
1675 term
->curs
.x
= newcols
- 1;
1676 term
->alt_x
= term
->alt_y
= 0;
1677 term
->wrapnext
= term
->alt_wnext
= FALSE
;
1679 term
->rows
= newrows
;
1680 term
->cols
= newcols
;
1681 term
->savelines
= newsavelines
;
1683 swap_screen(term
, save_alt_which
, FALSE
, FALSE
);
1687 if (term
->resize_fn
)
1688 term
->resize_fn(term
->resize_ctx
, term
->cols
, term
->rows
);
1692 * Hand a function and context pointer to the terminal which it can
1693 * use to notify a back end of resizes.
1695 void term_provide_resize_fn(Terminal
*term
,
1696 void (*resize_fn
)(void *, int, int),
1699 term
->resize_fn
= resize_fn
;
1700 term
->resize_ctx
= resize_ctx
;
1701 if (term
->cols
> 0 && term
->rows
> 0)
1702 resize_fn(resize_ctx
, term
->cols
, term
->rows
);
1705 /* Find the bottom line on the screen that has any content.
1706 * If only the top line has content, returns 0.
1707 * If no lines have content, return -1.
1709 static int find_last_nonempty_line(Terminal
* term
, tree234
* screen
)
1712 for (i
= count234(screen
) - 1; i
>= 0; i
--) {
1713 termline
*line
= index234(screen
, i
);
1715 for (j
= 0; j
< line
->cols
; j
++)
1716 if (!termchars_equal(&line
->chars
[j
], &term
->erase_char
))
1718 if (j
!= line
->cols
) break;
1724 * Swap screens. If `reset' is TRUE and we have been asked to
1725 * switch to the alternate screen, we must bring most of its
1726 * configuration from the main screen and erase the contents of the
1727 * alternate screen completely. (This is even true if we're already
1728 * on it! Blame xterm.)
1730 static void swap_screen(Terminal
*term
, int which
, int reset
, int keep_cur_pos
)
1736 reset
= FALSE
; /* do no weird resetting if which==0 */
1738 if (which
!= term
->alt_which
) {
1739 term
->alt_which
= which
;
1741 ttr
= term
->alt_screen
;
1742 term
->alt_screen
= term
->screen
;
1744 term
->alt_sblines
= find_last_nonempty_line(term
, term
->alt_screen
) + 1;
1746 if (!reset
&& !keep_cur_pos
)
1747 term
->curs
.x
= term
->alt_x
;
1750 if (!reset
&& !keep_cur_pos
)
1751 term
->curs
.y
= term
->alt_y
;
1754 if (!reset
) term
->marg_t
= term
->alt_t
;
1757 if (!reset
) term
->marg_b
= term
->alt_b
;
1760 if (!reset
) term
->dec_om
= term
->alt_om
;
1763 if (!reset
) term
->wrap
= term
->alt_wrap
;
1766 if (!reset
) term
->wrapnext
= term
->alt_wnext
;
1767 term
->alt_wnext
= t
;
1769 if (!reset
) term
->insert
= term
->alt_ins
;
1772 if (!reset
) term
->cset
= term
->alt_cset
;
1775 if (!reset
) term
->utf
= term
->alt_utf
;
1778 if (!reset
) term
->sco_acs
= term
->alt_sco_acs
;
1779 term
->alt_sco_acs
= t
;
1782 if (reset
&& term
->screen
) {
1784 * Yes, this _is_ supposed to honour background-colour-erase.
1786 erase_lots(term
, FALSE
, TRUE
, TRUE
);
1791 * Update the scroll bar.
1793 static void update_sbar(Terminal
*term
)
1795 int nscroll
= sblines(term
);
1796 set_sbar(term
->frontend
, nscroll
+ term
->rows
,
1797 nscroll
+ term
->disptop
, term
->rows
);
1801 * Check whether the region bounded by the two pointers intersects
1802 * the scroll region, and de-select the on-screen selection if so.
1804 static void check_selection(Terminal
*term
, pos from
, pos to
)
1806 if (poslt(from
, term
->selend
) && poslt(term
->selstart
, to
))
1811 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1812 * for backward.) `sb' is TRUE if the scrolling is permitted to
1813 * affect the scrollback buffer.
1815 static void scroll(Terminal
*term
, int topline
, int botline
, int lines
, int sb
)
1818 int i
, seltop
, olddisptop
, shift
;
1820 if (topline
!= 0 || term
->alt_which
!= 0)
1823 olddisptop
= term
->disptop
;
1827 line
= delpos234(term
->screen
, botline
);
1828 resizeline(term
, line
, term
->cols
);
1829 for (i
= 0; i
< term
->cols
; i
++)
1830 copy_termchar(line
, i
, &term
->erase_char
);
1831 line
->lattr
= LATTR_NORM
;
1832 addpos234(term
->screen
, line
, topline
);
1834 if (term
->selstart
.y
>= topline
&& term
->selstart
.y
<= botline
) {
1836 if (term
->selstart
.y
> botline
) {
1837 term
->selstart
.y
= botline
+ 1;
1838 term
->selstart
.x
= 0;
1841 if (term
->selend
.y
>= topline
&& term
->selend
.y
<= botline
) {
1843 if (term
->selend
.y
> botline
) {
1844 term
->selend
.y
= botline
+ 1;
1853 line
= delpos234(term
->screen
, topline
);
1854 #ifdef TERM_CC_DIAGS
1857 if (sb
&& term
->savelines
> 0) {
1858 int sblen
= count234(term
->scrollback
);
1860 * We must add this line to the scrollback. We'll
1861 * remove a line from the top of the scrollback if
1862 * the scrollback is full.
1864 if (sblen
== term
->savelines
) {
1865 unsigned char *cline
;
1868 cline
= delpos234(term
->scrollback
, 0);
1871 term
->tempsblines
+= 1;
1873 addpos234(term
->scrollback
, compressline(line
), sblen
);
1875 /* now `line' itself can be reused as the bottom line */
1878 * If the user is currently looking at part of the
1879 * scrollback, and they haven't enabled any options
1880 * that are going to reset the scrollback as a
1881 * result of this movement, then the chances are
1882 * they'd like to keep looking at the same line. So
1883 * we move their viewpoint at the same rate as the
1884 * scroll, at least until their viewpoint hits the
1885 * top end of the scrollback buffer, at which point
1886 * we don't have the choice any more.
1888 * Thanks to Jan Holmen Holsten for the idea and
1889 * initial implementation.
1891 if (term
->disptop
> -term
->savelines
&& term
->disptop
< 0)
1894 resizeline(term
, line
, term
->cols
);
1895 for (i
= 0; i
< term
->cols
; i
++)
1896 copy_termchar(line
, i
, &term
->erase_char
);
1897 line
->lattr
= LATTR_NORM
;
1898 addpos234(term
->screen
, line
, botline
);
1901 * If the selection endpoints move into the scrollback,
1902 * we keep them moving until they hit the top. However,
1903 * of course, if the line _hasn't_ moved into the
1904 * scrollback then we don't do this, and cut them off
1905 * at the top of the scroll region.
1907 * This applies to selstart and selend (for an existing
1908 * selection), and also selanchor (for one being
1909 * selected as we speak).
1911 seltop
= sb ?
-term
->savelines
: topline
;
1913 if (term
->selstate
!= NO_SELECTION
) {
1914 if (term
->selstart
.y
>= seltop
&&
1915 term
->selstart
.y
<= botline
) {
1917 if (term
->selstart
.y
< seltop
) {
1918 term
->selstart
.y
= seltop
;
1919 term
->selstart
.x
= 0;
1922 if (term
->selend
.y
>= seltop
&& term
->selend
.y
<= botline
) {
1924 if (term
->selend
.y
< seltop
) {
1925 term
->selend
.y
= seltop
;
1929 if (term
->selanchor
.y
>= seltop
&&
1930 term
->selanchor
.y
<= botline
) {
1931 term
->selanchor
.y
--;
1932 if (term
->selanchor
.y
< seltop
) {
1933 term
->selanchor
.y
= seltop
;
1934 term
->selanchor
.x
= 0;
1942 #ifdef OPTIMISE_SCROLL
1943 shift
+= term
->disptop
- olddisptop
;
1944 if (shift
< term
->rows
&& shift
> -term
->rows
&& shift
!= 0)
1945 scroll_display(term
, topline
, botline
, shift
);
1946 #endif /* OPTIMISE_SCROLL */
1949 #ifdef OPTIMISE_SCROLL
1951 * Add a scroll of a region on the screen into the pending scroll list.
1952 * `lines' is +ve for scrolling forward, -ve for backward.
1954 * If the scroll is on the same area as the last scroll in the list,
1957 static void save_scroll(Terminal
*term
, int topline
, int botline
, int lines
)
1959 struct scrollregion
*newscroll
;
1960 if (term
->scrolltail
&&
1961 term
->scrolltail
->topline
== topline
&&
1962 term
->scrolltail
->botline
== botline
) {
1963 term
->scrolltail
->lines
+= lines
;
1965 newscroll
= snew(struct scrollregion
);
1966 newscroll
->topline
= topline
;
1967 newscroll
->botline
= botline
;
1968 newscroll
->lines
= lines
;
1969 newscroll
->next
= NULL
;
1971 if (!term
->scrollhead
)
1972 term
->scrollhead
= newscroll
;
1974 term
->scrolltail
->next
= newscroll
;
1975 term
->scrolltail
= newscroll
;
1980 * Scroll the physical display, and our conception of it in disptext.
1982 static void scroll_display(Terminal
*term
, int topline
, int botline
, int lines
)
1984 int distance
, nlines
, i
, j
;
1986 distance
= lines
> 0 ? lines
: -lines
;
1987 nlines
= botline
- topline
+ 1 - distance
;
1989 for (i
= 0; i
< nlines
; i
++)
1990 for (j
= 0; j
< term
->cols
; j
++)
1991 copy_termchar(term
->disptext
[i
], j
,
1992 term
->disptext
[i
+distance
]->chars
+j
);
1993 if (term
->dispcursy
>= 0 &&
1994 term
->dispcursy
>= topline
+ distance
&&
1995 term
->dispcursy
< topline
+ distance
+ nlines
)
1996 term
->dispcursy
-= distance
;
1997 for (i
= 0; i
< distance
; i
++)
1998 for (j
= 0; j
< term
->cols
; j
++)
1999 term
->disptext
[nlines
+i
]->chars
[j
].attr
|= ATTR_INVALID
;
2001 for (i
= nlines
; i
-- ;)
2002 for (j
= 0; j
< term
->cols
; j
++)
2003 copy_termchar(term
->disptext
[i
+distance
], j
,
2004 term
->disptext
[i
]->chars
+j
);
2005 if (term
->dispcursy
>= 0 &&
2006 term
->dispcursy
>= topline
&&
2007 term
->dispcursy
< topline
+ nlines
)
2008 term
->dispcursy
+= distance
;
2009 for (i
= 0; i
< distance
; i
++)
2010 for (j
= 0; j
< term
->cols
; j
++)
2011 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
2013 save_scroll(term
, topline
, botline
, lines
);
2015 #endif /* OPTIMISE_SCROLL */
2018 * Move the cursor to a given position, clipping at boundaries. We
2019 * may or may not want to clip at the scroll margin: marg_clip is 0
2020 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2021 * even _being_ outside the margins.
2023 static void move(Terminal
*term
, int x
, int y
, int marg_clip
)
2027 if (x
>= term
->cols
)
2030 if ((term
->curs
.y
>= term
->marg_t
|| marg_clip
== 2) &&
2033 if ((term
->curs
.y
<= term
->marg_b
|| marg_clip
== 2) &&
2039 if (y
>= term
->rows
)
2043 term
->wrapnext
= FALSE
;
2047 * Save or restore the cursor and SGR mode.
2049 static void save_cursor(Terminal
*term
, int save
)
2052 term
->savecurs
= term
->curs
;
2053 term
->save_attr
= term
->curr_attr
;
2054 term
->save_cset
= term
->cset
;
2055 term
->save_utf
= term
->utf
;
2056 term
->save_wnext
= term
->wrapnext
;
2057 term
->save_csattr
= term
->cset_attr
[term
->cset
];
2058 term
->save_sco_acs
= term
->sco_acs
;
2060 term
->curs
= term
->savecurs
;
2061 /* Make sure the window hasn't shrunk since the save */
2062 if (term
->curs
.x
>= term
->cols
)
2063 term
->curs
.x
= term
->cols
- 1;
2064 if (term
->curs
.y
>= term
->rows
)
2065 term
->curs
.y
= term
->rows
- 1;
2067 term
->curr_attr
= term
->save_attr
;
2068 term
->cset
= term
->save_cset
;
2069 term
->utf
= term
->save_utf
;
2070 term
->wrapnext
= term
->save_wnext
;
2072 * wrapnext might reset to False if the x position is no
2073 * longer at the rightmost edge.
2075 if (term
->wrapnext
&& term
->curs
.x
< term
->cols
-1)
2076 term
->wrapnext
= FALSE
;
2077 term
->cset_attr
[term
->cset
] = term
->save_csattr
;
2078 term
->sco_acs
= term
->save_sco_acs
;
2079 set_erase_char(term
);
2084 * This function is called before doing _anything_ which affects
2085 * only part of a line of text. It is used to mark the boundary
2086 * between two character positions, and it indicates that some sort
2087 * of effect is going to happen on only one side of that boundary.
2089 * The effect of this function is to check whether a CJK
2090 * double-width character is straddling the boundary, and to remove
2091 * it and replace it with two spaces if so. (Of course, one or
2092 * other of those spaces is then likely to be replaced with
2093 * something else again, as a result of whatever happens next.)
2095 * Also, if the boundary is at the right-hand _edge_ of the screen,
2096 * it implies something deliberate is being done to the rightmost
2097 * column position; hence we must clear LATTR_WRAPPED2.
2099 * The input to the function is the coordinates of the _second_
2100 * character of the pair.
2102 static void check_boundary(Terminal
*term
, int x
, int y
)
2106 /* Validate input coordinates, just in case. */
2107 if (x
== 0 || x
> term
->cols
)
2110 ldata
= scrlineptr(y
);
2111 if (x
== term
->cols
) {
2112 ldata
->lattr
&= ~LATTR_WRAPPED2
;
2114 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
2115 clear_cc(ldata
, x
-1);
2117 ldata
->chars
[x
-1].chr
= ' ' | CSET_ASCII
;
2118 ldata
->chars
[x
] = ldata
->chars
[x
-1];
2124 * Erase a large portion of the screen: the whole screen, or the
2125 * whole line, or parts thereof.
2127 static void erase_lots(Terminal
*term
,
2128 int line_only
, int from_begin
, int to_end
)
2132 int erasing_lines_from_top
= 0;
2135 start
.y
= term
->curs
.y
;
2137 end
.y
= term
->curs
.y
+ 1;
2139 erase_lattr
= FALSE
;
2154 if (!from_begin
|| !to_end
)
2155 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2156 check_selection(term
, start
, end
);
2158 /* Clear screen also forces a full window redraw, just in case. */
2159 if (start
.y
== 0 && start
.x
== 0 && end
.y
== term
->rows
)
2160 term_invalidate(term
);
2162 /* Lines scrolled away shouldn't be brought back on if the terminal
2164 if (start
.y
== 0 && start
.x
== 0 && end
.x
== 0 && erase_lattr
)
2165 erasing_lines_from_top
= 1;
2167 if (term
->cfg
.erase_to_scrollback
&& erasing_lines_from_top
) {
2168 /* If it's a whole number of lines, starting at the top, and
2169 * we're fully erasing them, erase by scrolling and keep the
2170 * lines in the scrollback. */
2171 int scrolllines
= end
.y
;
2172 if (end
.y
== term
->rows
) {
2173 /* Shrink until we find a non-empty row.*/
2174 scrolllines
= find_last_nonempty_line(term
, term
->screen
) + 1;
2176 if (scrolllines
> 0)
2177 scroll(term
, 0, scrolllines
- 1, scrolllines
, TRUE
);
2179 termline
*ldata
= scrlineptr(start
.y
);
2180 while (poslt(start
, end
)) {
2181 if (start
.x
== term
->cols
) {
2183 ldata
->lattr
&= ~(LATTR_WRAPPED
| LATTR_WRAPPED2
);
2185 ldata
->lattr
= LATTR_NORM
;
2187 copy_termchar(ldata
, start
.x
, &term
->erase_char
);
2189 if (incpos(start
) && start
.y
< term
->rows
) {
2190 ldata
= scrlineptr(start
.y
);
2195 /* After an erase of lines from the top of the screen, we shouldn't
2196 * bring the lines back again if the terminal enlarges (since the user or
2197 * application has explictly thrown them away). */
2198 if (erasing_lines_from_top
&& !(term
->alt_which
))
2199 term
->tempsblines
= 0;
2203 * Insert or delete characters within the current line. n is +ve if
2204 * insertion is desired, and -ve for deletion.
2206 static void insch(Terminal
*term
, int n
)
2208 int dir
= (n
< 0 ?
-1 : +1);
2213 n
= (n
< 0 ?
-n
: n
);
2214 if (n
> term
->cols
- term
->curs
.x
)
2215 n
= term
->cols
- term
->curs
.x
;
2216 m
= term
->cols
- term
->curs
.x
- n
;
2217 cursplus
.y
= term
->curs
.y
;
2218 cursplus
.x
= term
->curs
.x
+ n
;
2219 check_selection(term
, term
->curs
, cursplus
);
2220 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2222 check_boundary(term
, term
->curs
.x
+ n
, term
->curs
.y
);
2223 ldata
= scrlineptr(term
->curs
.y
);
2225 for (j
= 0; j
< m
; j
++)
2226 move_termchar(ldata
,
2227 ldata
->chars
+ term
->curs
.x
+ j
,
2228 ldata
->chars
+ term
->curs
.x
+ j
+ n
);
2230 copy_termchar(ldata
, term
->curs
.x
+ m
++, &term
->erase_char
);
2233 move_termchar(ldata
,
2234 ldata
->chars
+ term
->curs
.x
+ j
+ n
,
2235 ldata
->chars
+ term
->curs
.x
+ j
);
2237 copy_termchar(ldata
, term
->curs
.x
+ n
, &term
->erase_char
);
2242 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2243 * whether the mode is a DEC private one or a normal one.)
2245 static void toggle_mode(Terminal
*term
, int mode
, int query
, int state
)
2249 case 1: /* DECCKM: application cursor keys */
2250 term
->app_cursor_keys
= state
;
2252 case 2: /* DECANM: VT52 mode */
2253 term
->vt52_mode
= !state
;
2254 if (term
->vt52_mode
) {
2255 term
->blink_is_real
= FALSE
;
2256 term
->vt52_bold
= FALSE
;
2258 term
->blink_is_real
= term
->cfg
.blinktext
;
2260 term_schedule_tblink(term
);
2262 case 3: /* DECCOLM: 80/132 columns */
2264 if (!term
->cfg
.no_remote_resize
)
2265 request_resize(term
->frontend
, state ?
132 : 80, term
->rows
);
2266 term
->reset_132
= state
;
2267 term
->alt_t
= term
->marg_t
= 0;
2268 term
->alt_b
= term
->marg_b
= term
->rows
- 1;
2269 move(term
, 0, 0, 0);
2270 erase_lots(term
, FALSE
, TRUE
, TRUE
);
2272 case 5: /* DECSCNM: reverse video */
2274 * Toggle reverse video. If we receive an OFF within the
2275 * visual bell timeout period after an ON, we trigger an
2276 * effective visual bell, so that ESC[?5hESC[?5l will
2277 * always be an actually _visible_ visual bell.
2279 if (term
->rvideo
&& !state
) {
2280 /* This is an OFF, so set up a vbell */
2281 term_schedule_vbell(term
, TRUE
, term
->rvbell_startpoint
);
2282 } else if (!term
->rvideo
&& state
) {
2283 /* This is an ON, so we notice the time and save it. */
2284 term
->rvbell_startpoint
= GETTICKCOUNT();
2286 term
->rvideo
= state
;
2287 seen_disp_event(term
);
2289 case 6: /* DECOM: DEC origin mode */
2290 term
->dec_om
= state
;
2292 case 7: /* DECAWM: auto wrap */
2295 case 8: /* DECARM: auto key repeat */
2296 term
->repeat_off
= !state
;
2298 case 10: /* DECEDM: set local edit mode */
2299 term
->term_editing
= state
;
2300 if (term
->ldisc
) /* cause ldisc to notice changes */
2301 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2303 case 25: /* DECTCEM: enable/disable cursor */
2304 compatibility2(OTHER
, VT220
);
2305 term
->cursor_on
= state
;
2306 seen_disp_event(term
);
2308 case 47: /* alternate screen */
2309 compatibility(OTHER
);
2311 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, FALSE
, FALSE
);
2314 case 1000: /* xterm mouse 1 */
2315 term
->xterm_mouse
= state ?
1 : 0;
2316 set_raw_mouse_mode(term
->frontend
, state
);
2318 case 1002: /* xterm mouse 2 */
2319 term
->xterm_mouse
= state ?
2 : 0;
2320 set_raw_mouse_mode(term
->frontend
, state
);
2322 case 1047: /* alternate screen */
2323 compatibility(OTHER
);
2325 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, TRUE
);
2328 case 1048: /* save/restore cursor */
2329 if (!term
->cfg
.no_alt_screen
)
2330 save_cursor(term
, state
);
2331 if (!state
) seen_disp_event(term
);
2333 case 1049: /* cursor & alternate screen */
2334 if (state
&& !term
->cfg
.no_alt_screen
)
2335 save_cursor(term
, state
);
2336 if (!state
) seen_disp_event(term
);
2337 compatibility(OTHER
);
2339 swap_screen(term
, term
->cfg
.no_alt_screen ?
0 : state
, TRUE
, FALSE
);
2340 if (!state
&& !term
->cfg
.no_alt_screen
)
2341 save_cursor(term
, state
);
2346 case 4: /* IRM: set insert mode */
2347 compatibility(VT102
);
2348 term
->insert
= state
;
2350 case 12: /* SRM: set echo mode */
2351 term
->term_echoing
= !state
;
2352 if (term
->ldisc
) /* cause ldisc to notice changes */
2353 ldisc_send(term
->ldisc
, NULL
, 0, 0);
2355 case 20: /* LNM: Return sends ... */
2356 term
->cr_lf_return
= state
;
2358 case 34: /* WYULCURM: Make cursor BIG */
2359 compatibility2(OTHER
, VT220
);
2360 term
->big_cursor
= !state
;
2365 * Process an OSC sequence: set window title or icon name.
2367 static void do_osc(Terminal
*term
)
2370 while (term
->osc_strlen
--)
2371 term
->wordness
[(unsigned char)
2372 term
->osc_string
[term
->osc_strlen
]] = term
->esc_args
[0];
2374 term
->osc_string
[term
->osc_strlen
] = '\0';
2375 switch (term
->esc_args
[0]) {
2378 if (!term
->cfg
.no_remote_wintitle
)
2379 set_icon(term
->frontend
, term
->osc_string
);
2380 if (term
->esc_args
[0] == 1)
2382 /* fall through: parameter 0 means set both */
2385 if (!term
->cfg
.no_remote_wintitle
)
2386 set_title(term
->frontend
, term
->osc_string
);
2393 * ANSI printing routines.
2395 static void term_print_setup(Terminal
*term
)
2397 bufchain_clear(&term
->printer_buf
);
2398 term
->print_job
= printer_start_job(term
->cfg
.printer
);
2400 static void term_print_flush(Terminal
*term
)
2405 while ((size
= bufchain_size(&term
->printer_buf
)) > 5) {
2406 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2409 printer_job_data(term
->print_job
, data
, len
);
2410 bufchain_consume(&term
->printer_buf
, len
);
2413 static void term_print_finish(Terminal
*term
)
2419 if (!term
->printing
&& !term
->only_printing
)
2420 return; /* we need do nothing */
2422 term_print_flush(term
);
2423 while ((size
= bufchain_size(&term
->printer_buf
)) > 0) {
2424 bufchain_prefix(&term
->printer_buf
, &data
, &len
);
2426 if (c
== '\033' || c
== '\233') {
2427 bufchain_consume(&term
->printer_buf
, size
);
2430 printer_job_data(term
->print_job
, &c
, 1);
2431 bufchain_consume(&term
->printer_buf
, 1);
2434 printer_finish_job(term
->print_job
);
2435 term
->print_job
= NULL
;
2436 term
->printing
= term
->only_printing
= FALSE
;
2440 * Remove everything currently in `inbuf' and stick it up on the
2441 * in-memory display. There's a big state machine in here to
2442 * process escape sequences...
2444 static void term_out(Terminal
*term
)
2448 unsigned char localbuf
[256], *chars
;
2453 chars
= NULL
; /* placate compiler warnings */
2454 while (nchars
> 0 || unget
!= -1 || bufchain_size(&term
->inbuf
) > 0) {
2458 bufchain_prefix(&term
->inbuf
, &ret
, &nchars
);
2459 if (nchars
> sizeof(localbuf
))
2460 nchars
= sizeof(localbuf
);
2461 memcpy(localbuf
, ret
, nchars
);
2462 bufchain_consume(&term
->inbuf
, nchars
);
2464 assert(chars
!= NULL
);
2470 * Optionally log the session traffic to a file. Useful for
2471 * debugging and possibly also useful for actual logging.
2473 if (term
->cfg
.logtype
== LGTYP_DEBUG
&& term
->logctx
)
2474 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_DEBUG
);
2480 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2481 * be able to display 8-bit characters, but I'll let that go 'cause
2486 * If we're printing, add the character to the printer
2489 if (term
->printing
) {
2490 bufchain_add(&term
->printer_buf
, &c
, 1);
2493 * If we're in print-only mode, we use a much simpler
2494 * state machine designed only to recognise the ESC[4i
2495 * termination sequence.
2497 if (term
->only_printing
) {
2499 term
->print_state
= 1;
2500 else if (c
== (unsigned char)'\233')
2501 term
->print_state
= 2;
2502 else if (c
== '[' && term
->print_state
== 1)
2503 term
->print_state
= 2;
2504 else if (c
== '4' && term
->print_state
== 2)
2505 term
->print_state
= 3;
2506 else if (c
== 'i' && term
->print_state
== 3)
2507 term
->print_state
= 4;
2509 term
->print_state
= 0;
2510 if (term
->print_state
== 4) {
2511 term_print_finish(term
);
2517 /* First see about all those translations. */
2518 if (term
->termstate
== TOPLEVEL
) {
2520 switch (term
->utf_state
) {
2523 /* UTF-8 must be stateless so we ignore iso2022. */
2524 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2525 c
= term
->ucsdata
->unitab_ctrl
[c
];
2526 else c
= ((unsigned char)c
) | CSET_ASCII
;
2528 } else if ((c
& 0xe0) == 0xc0) {
2529 term
->utf_size
= term
->utf_state
= 1;
2530 term
->utf_char
= (c
& 0x1f);
2531 } else if ((c
& 0xf0) == 0xe0) {
2532 term
->utf_size
= term
->utf_state
= 2;
2533 term
->utf_char
= (c
& 0x0f);
2534 } else if ((c
& 0xf8) == 0xf0) {
2535 term
->utf_size
= term
->utf_state
= 3;
2536 term
->utf_char
= (c
& 0x07);
2537 } else if ((c
& 0xfc) == 0xf8) {
2538 term
->utf_size
= term
->utf_state
= 4;
2539 term
->utf_char
= (c
& 0x03);
2540 } else if ((c
& 0xfe) == 0xfc) {
2541 term
->utf_size
= term
->utf_state
= 5;
2542 term
->utf_char
= (c
& 0x01);
2553 if ((c
& 0xC0) != 0x80) {
2556 term
->utf_state
= 0;
2559 term
->utf_char
= (term
->utf_char
<< 6) | (c
& 0x3f);
2560 if (--term
->utf_state
)
2565 /* Is somebody trying to be evil! */
2567 (c
< 0x800 && term
->utf_size
>= 2) ||
2568 (c
< 0x10000 && term
->utf_size
>= 3) ||
2569 (c
< 0x200000 && term
->utf_size
>= 4) ||
2570 (c
< 0x4000000 && term
->utf_size
>= 5))
2573 /* Unicode line separator and paragraph separator are CR-LF */
2574 if (c
== 0x2028 || c
== 0x2029)
2577 /* High controls are probably a Baaad idea too. */
2581 /* The UTF-16 surrogates are not nice either. */
2582 /* The standard give the option of decoding these:
2583 * I don't want to! */
2584 if (c
>= 0xD800 && c
< 0xE000)
2587 /* ISO 10646 characters now limited to UTF-16 range. */
2591 /* This is currently a TagPhobic application.. */
2592 if (c
>= 0xE0000 && c
<= 0xE007F)
2595 /* U+FEFF is best seen as a null. */
2598 /* But U+FFFE is an error. */
2599 if (c
== 0xFFFE || c
== 0xFFFF)
2604 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2605 else if(term
->sco_acs
&&
2606 (c
!='\033' && c
!='\012' && c
!='\015' && c
!='\b'))
2608 if (term
->sco_acs
== 2) c
|= 0x80;
2611 switch (term
->cset_attr
[term
->cset
]) {
2613 * Linedraw characters are different from 'ESC ( B'
2614 * only for a small range. For ones outside that
2615 * range, make sure we use the same font as well as
2616 * the same encoding.
2619 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2620 c
= term
->ucsdata
->unitab_ctrl
[c
];
2622 c
= ((unsigned char) c
) | CSET_LINEDRW
;
2626 /* If UK-ASCII, make the '#' a LineDraw Pound */
2628 c
= '}' | CSET_LINEDRW
;
2631 /*FALLTHROUGH*/ case CSET_ASCII
:
2632 if (term
->ucsdata
->unitab_ctrl
[c
] != 0xFF)
2633 c
= term
->ucsdata
->unitab_ctrl
[c
];
2635 c
= ((unsigned char) c
) | CSET_ASCII
;
2638 if (c
>=' ') c
= ((unsigned char)c
) | CSET_SCOACS
;
2645 * How about C1 controls?
2646 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2648 if ((c
& -32) == 0x80 && term
->termstate
< DO_CTRLS
&&
2649 !term
->vt52_mode
&& has_compat(VT220
)) {
2653 term
->termstate
= SEEN_ESC
;
2654 term
->esc_query
= FALSE
;
2655 c
= '@' + (c
& 0x1F);
2659 /* Or the GL control. */
2660 if (c
== '\177' && term
->termstate
< DO_CTRLS
&& has_compat(OTHER
)) {
2661 if (term
->curs
.x
&& !term
->wrapnext
)
2663 term
->wrapnext
= FALSE
;
2664 /* destructive backspace might be disabled */
2665 if (!term
->cfg
.no_dbackspace
) {
2666 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2667 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2668 copy_termchar(scrlineptr(term
->curs
.y
),
2669 term
->curs
.x
, &term
->erase_char
);
2672 /* Or normal C0 controls. */
2673 if ((c
& ~0x1F) == 0 && term
->termstate
< DO_CTRLS
) {
2675 case '\005': /* ENQ: terminal type query */
2677 * Strictly speaking this is VT100 but a VT100 defaults to
2678 * no response. Other terminals respond at their option.
2680 * Don't put a CR in the default string as this tends to
2681 * upset some weird software.
2683 compatibility(ANSIMIN
);
2685 char abuf
[lenof(term
->cfg
.answerback
)], *s
, *d
;
2686 for (s
= term
->cfg
.answerback
, d
= abuf
; *s
;) {
2688 char c
= ctrlparse(s
, &n
);
2696 lpage_send(term
->ldisc
, DEFAULT_CODEPAGE
,
2700 case '\007': /* BEL: Bell */
2702 struct beeptime
*newbeep
;
2703 unsigned long ticks
;
2705 ticks
= GETTICKCOUNT();
2707 if (!term
->beep_overloaded
) {
2708 newbeep
= snew(struct beeptime
);
2709 newbeep
->ticks
= ticks
;
2710 newbeep
->next
= NULL
;
2711 if (!term
->beephead
)
2712 term
->beephead
= newbeep
;
2714 term
->beeptail
->next
= newbeep
;
2715 term
->beeptail
= newbeep
;
2720 * Throw out any beeps that happened more than
2723 while (term
->beephead
&&
2724 term
->beephead
->ticks
< ticks
- term
->cfg
.bellovl_t
) {
2725 struct beeptime
*tmp
= term
->beephead
;
2726 term
->beephead
= tmp
->next
;
2728 if (!term
->beephead
)
2729 term
->beeptail
= NULL
;
2733 if (term
->cfg
.bellovl
&& term
->beep_overloaded
&&
2734 ticks
- term
->lastbeep
>= (unsigned)term
->cfg
.bellovl_s
) {
2736 * If we're currently overloaded and the
2737 * last beep was more than s seconds ago,
2738 * leave overload mode.
2740 term
->beep_overloaded
= FALSE
;
2741 } else if (term
->cfg
.bellovl
&& !term
->beep_overloaded
&&
2742 term
->nbeeps
>= term
->cfg
.bellovl_n
) {
2744 * Now, if we have n or more beeps
2745 * remaining in the queue, go into overload
2748 term
->beep_overloaded
= TRUE
;
2750 term
->lastbeep
= ticks
;
2753 * Perform an actual beep if we're not overloaded.
2755 if (!term
->cfg
.bellovl
|| !term
->beep_overloaded
) {
2756 do_beep(term
->frontend
, term
->cfg
.beep
);
2758 if (term
->cfg
.beep
== BELL_VISUAL
) {
2759 term_schedule_vbell(term
, FALSE
, 0);
2762 seen_disp_event(term
);
2765 case '\b': /* BS: Back space */
2766 if (term
->curs
.x
== 0 &&
2767 (term
->curs
.y
== 0 || term
->wrap
== 0))
2769 else if (term
->curs
.x
== 0 && term
->curs
.y
> 0)
2770 term
->curs
.x
= term
->cols
- 1, term
->curs
.y
--;
2771 else if (term
->wrapnext
)
2772 term
->wrapnext
= FALSE
;
2775 seen_disp_event(term
);
2777 case '\016': /* LS1: Locking-shift one */
2778 compatibility(VT100
);
2781 case '\017': /* LS0: Locking-shift zero */
2782 compatibility(VT100
);
2785 case '\033': /* ESC: Escape */
2786 if (term
->vt52_mode
)
2787 term
->termstate
= VT52_ESC
;
2789 compatibility(ANSIMIN
);
2790 term
->termstate
= SEEN_ESC
;
2791 term
->esc_query
= FALSE
;
2794 case '\015': /* CR: Carriage return */
2796 term
->wrapnext
= FALSE
;
2797 seen_disp_event(term
);
2798 term
->paste_hold
= 0;
2800 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2802 case '\014': /* FF: Form feed */
2803 if (has_compat(SCOANSI
)) {
2804 move(term
, 0, 0, 0);
2805 erase_lots(term
, FALSE
, FALSE
, TRUE
);
2807 term
->wrapnext
= FALSE
;
2808 seen_disp_event(term
);
2811 case '\013': /* VT: Line tabulation */
2812 compatibility(VT100
);
2813 case '\012': /* LF: Line feed */
2814 if (term
->curs
.y
== term
->marg_b
)
2815 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2816 else if (term
->curs
.y
< term
->rows
- 1)
2818 if (term
->cfg
.lfhascr
)
2820 term
->wrapnext
= FALSE
;
2821 seen_disp_event(term
);
2822 term
->paste_hold
= 0;
2824 logtraffic(term
->logctx
, (unsigned char) c
, LGTYP_ASCII
);
2826 case '\t': /* HT: Character tabulation */
2828 pos old_curs
= term
->curs
;
2829 termline
*ldata
= scrlineptr(term
->curs
.y
);
2833 } while (term
->curs
.x
< term
->cols
- 1 &&
2834 !term
->tabs
[term
->curs
.x
]);
2836 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
) {
2837 if (term
->curs
.x
>= term
->cols
/ 2)
2838 term
->curs
.x
= term
->cols
/ 2 - 1;
2840 if (term
->curs
.x
>= term
->cols
)
2841 term
->curs
.x
= term
->cols
- 1;
2844 check_selection(term
, old_curs
, term
->curs
);
2846 seen_disp_event(term
);
2850 switch (term
->termstate
) {
2852 /* Only graphic characters get this far;
2853 * ctrls are stripped above */
2855 termline
*cline
= scrlineptr(term
->curs
.y
);
2860 width
= (term
->cfg
.cjk_ambig_wide ?
2861 mk_wcwidth_cjk((wchar_t) c
) :
2862 mk_wcwidth((wchar_t) c
));
2864 if (term
->wrapnext
&& term
->wrap
&& width
> 0) {
2865 cline
->lattr
|= LATTR_WRAPPED
;
2866 if (term
->curs
.y
== term
->marg_b
)
2867 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2868 else if (term
->curs
.y
< term
->rows
- 1)
2871 term
->wrapnext
= FALSE
;
2872 cline
= scrlineptr(term
->curs
.y
);
2874 if (term
->insert
&& width
> 0)
2876 if (term
->selstate
!= NO_SELECTION
) {
2877 pos cursplus
= term
->curs
;
2879 check_selection(term
, term
->curs
, cursplus
);
2881 if (((c
& CSET_MASK
) == CSET_ASCII
||
2882 (c
& CSET_MASK
) == 0) &&
2884 logtraffic(term
->logctx
, (unsigned char) c
,
2890 * If we're about to display a double-width
2891 * character starting in the rightmost
2892 * column, then we do something special
2893 * instead. We must print a space in the
2894 * last column of the screen, then wrap;
2895 * and we also set LATTR_WRAPPED2 which
2896 * instructs subsequent cut-and-pasting not
2897 * only to splice this line to the one
2898 * after it, but to ignore the space in the
2899 * last character position as well.
2900 * (Because what was actually output to the
2901 * terminal was presumably just a sequence
2902 * of CJK characters, and we don't want a
2903 * space to be pasted in the middle of
2904 * those just because they had the
2905 * misfortune to start in the wrong parity
2906 * column. xterm concurs.)
2908 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2909 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2910 if (term
->curs
.x
== term
->cols
-1) {
2911 copy_termchar(cline
, term
->curs
.x
,
2913 cline
->lattr
|= LATTR_WRAPPED
| LATTR_WRAPPED2
;
2914 if (term
->curs
.y
== term
->marg_b
)
2915 scroll(term
, term
->marg_t
, term
->marg_b
,
2917 else if (term
->curs
.y
< term
->rows
- 1)
2920 cline
= scrlineptr(term
->curs
.y
);
2921 /* Now we must check_boundary again, of course. */
2922 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2923 check_boundary(term
, term
->curs
.x
+2, term
->curs
.y
);
2927 clear_cc(cline
, term
->curs
.x
);
2928 cline
->chars
[term
->curs
.x
].chr
= c
;
2929 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2934 clear_cc(cline
, term
->curs
.x
);
2935 cline
->chars
[term
->curs
.x
].chr
= UCSWIDE
;
2936 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2940 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
2941 check_boundary(term
, term
->curs
.x
+1, term
->curs
.y
);
2944 clear_cc(cline
, term
->curs
.x
);
2945 cline
->chars
[term
->curs
.x
].chr
= c
;
2946 cline
->chars
[term
->curs
.x
].attr
= term
->curr_attr
;
2950 if (term
->curs
.x
> 0) {
2951 int x
= term
->curs
.x
- 1;
2953 /* If we're in wrapnext state, the character
2954 * to combine with is _here_, not to our left. */
2959 * If the previous character is
2960 * UCSWIDE, back up another one.
2962 if (cline
->chars
[x
].chr
== UCSWIDE
) {
2967 add_cc(cline
, x
, c
);
2968 seen_disp_event(term
);
2975 if (term
->curs
.x
== term
->cols
) {
2977 term
->wrapnext
= TRUE
;
2978 if (term
->wrap
&& term
->vt52_mode
) {
2979 cline
->lattr
|= LATTR_WRAPPED
;
2980 if (term
->curs
.y
== term
->marg_b
)
2981 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
2982 else if (term
->curs
.y
< term
->rows
- 1)
2985 term
->wrapnext
= FALSE
;
2988 seen_disp_event(term
);
2994 * This state is virtually identical to SEEN_ESC, with the
2995 * exception that we have an OSC sequence in the pipeline,
2996 * and _if_ we see a backslash, we process it.
3000 term
->termstate
= TOPLEVEL
;
3003 /* else fall through */
3005 if (c
>= ' ' && c
<= '/') {
3006 if (term
->esc_query
)
3007 term
->esc_query
= -1;
3009 term
->esc_query
= c
;
3012 term
->termstate
= TOPLEVEL
;
3013 switch (ANSI(c
, term
->esc_query
)) {
3014 case '[': /* enter CSI mode */
3015 term
->termstate
= SEEN_CSI
;
3016 term
->esc_nargs
= 1;
3017 term
->esc_args
[0] = ARG_DEFAULT
;
3018 term
->esc_query
= FALSE
;
3020 case ']': /* OSC: xterm escape sequences */
3021 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3022 compatibility(OTHER
);
3023 term
->termstate
= SEEN_OSC
;
3024 term
->esc_args
[0] = 0;
3026 case '7': /* DECSC: save cursor */
3027 compatibility(VT100
);
3028 save_cursor(term
, TRUE
);
3030 case '8': /* DECRC: restore cursor */
3031 compatibility(VT100
);
3032 save_cursor(term
, FALSE
);
3033 seen_disp_event(term
);
3035 case '=': /* DECKPAM: Keypad application mode */
3036 compatibility(VT100
);
3037 term
->app_keypad_keys
= TRUE
;
3039 case '>': /* DECKPNM: Keypad numeric mode */
3040 compatibility(VT100
);
3041 term
->app_keypad_keys
= FALSE
;
3043 case 'D': /* IND: exactly equivalent to LF */
3044 compatibility(VT100
);
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)
3049 term
->wrapnext
= FALSE
;
3050 seen_disp_event(term
);
3052 case 'E': /* NEL: exactly equivalent to CR-LF */
3053 compatibility(VT100
);
3055 if (term
->curs
.y
== term
->marg_b
)
3056 scroll(term
, term
->marg_t
, term
->marg_b
, 1, TRUE
);
3057 else if (term
->curs
.y
< term
->rows
- 1)
3059 term
->wrapnext
= FALSE
;
3060 seen_disp_event(term
);
3062 case 'M': /* RI: reverse index - backwards LF */
3063 compatibility(VT100
);
3064 if (term
->curs
.y
== term
->marg_t
)
3065 scroll(term
, term
->marg_t
, term
->marg_b
, -1, TRUE
);
3066 else if (term
->curs
.y
> 0)
3068 term
->wrapnext
= FALSE
;
3069 seen_disp_event(term
);
3071 case 'Z': /* DECID: terminal type query */
3072 compatibility(VT100
);
3074 ldisc_send(term
->ldisc
, term
->id_string
,
3075 strlen(term
->id_string
), 0);
3077 case 'c': /* RIS: restore power-on settings */
3078 compatibility(VT100
);
3080 if (term
->ldisc
) /* cause ldisc to notice changes */
3081 ldisc_send(term
->ldisc
, NULL
, 0, 0);
3082 if (term
->reset_132
) {
3083 if (!term
->cfg
.no_remote_resize
)
3084 request_resize(term
->frontend
, 80, term
->rows
);
3085 term
->reset_132
= 0;
3088 seen_disp_event(term
);
3090 case 'H': /* HTS: set a tab */
3091 compatibility(VT100
);
3092 term
->tabs
[term
->curs
.x
] = TRUE
;
3095 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3096 compatibility(VT100
);
3102 for (i
= 0; i
< term
->rows
; i
++) {
3103 ldata
= scrlineptr(i
);
3104 for (j
= 0; j
< term
->cols
; j
++) {
3105 copy_termchar(ldata
, j
,
3106 &term
->basic_erase_char
);
3107 ldata
->chars
[j
].chr
= 'E';
3109 ldata
->lattr
= LATTR_NORM
;
3112 seen_disp_event(term
);
3113 scrtop
.x
= scrtop
.y
= 0;
3115 scrbot
.y
= term
->rows
;
3116 check_selection(term
, scrtop
, scrbot
);
3120 case ANSI('3', '#'):
3121 case ANSI('4', '#'):
3122 case ANSI('5', '#'):
3123 case ANSI('6', '#'):
3124 compatibility(VT100
);
3128 switch (ANSI(c
, term
->esc_query
)) {
3129 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3132 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3135 case ANSI('5', '#'): /* DECSWL: normal */
3136 nlattr
= LATTR_NORM
;
3138 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3139 nlattr
= LATTR_WIDE
;
3142 scrlineptr(term
->curs
.y
)->lattr
= nlattr
;
3145 /* GZD4: G0 designate 94-set */
3146 case ANSI('A', '('):
3147 compatibility(VT100
);
3148 if (!term
->cfg
.no_remote_charset
)
3149 term
->cset_attr
[0] = CSET_GBCHR
;
3151 case ANSI('B', '('):
3152 compatibility(VT100
);
3153 if (!term
->cfg
.no_remote_charset
)
3154 term
->cset_attr
[0] = CSET_ASCII
;
3156 case ANSI('0', '('):
3157 compatibility(VT100
);
3158 if (!term
->cfg
.no_remote_charset
)
3159 term
->cset_attr
[0] = CSET_LINEDRW
;
3161 case ANSI('U', '('):
3162 compatibility(OTHER
);
3163 if (!term
->cfg
.no_remote_charset
)
3164 term
->cset_attr
[0] = CSET_SCOACS
;
3166 /* G1D4: G1-designate 94-set */
3167 case ANSI('A', ')'):
3168 compatibility(VT100
);
3169 if (!term
->cfg
.no_remote_charset
)
3170 term
->cset_attr
[1] = CSET_GBCHR
;
3172 case ANSI('B', ')'):
3173 compatibility(VT100
);
3174 if (!term
->cfg
.no_remote_charset
)
3175 term
->cset_attr
[1] = CSET_ASCII
;
3177 case ANSI('0', ')'):
3178 compatibility(VT100
);
3179 if (!term
->cfg
.no_remote_charset
)
3180 term
->cset_attr
[1] = CSET_LINEDRW
;
3182 case ANSI('U', ')'):
3183 compatibility(OTHER
);
3184 if (!term
->cfg
.no_remote_charset
)
3185 term
->cset_attr
[1] = CSET_SCOACS
;
3187 /* DOCS: Designate other coding system */
3188 case ANSI('8', '%'): /* Old Linux code */
3189 case ANSI('G', '%'):
3190 compatibility(OTHER
);
3191 if (!term
->cfg
.no_remote_charset
)
3194 case ANSI('@', '%'):
3195 compatibility(OTHER
);
3196 if (!term
->cfg
.no_remote_charset
)
3202 term
->termstate
= TOPLEVEL
; /* default */
3204 if (term
->esc_nargs
<= ARGS_MAX
) {
3205 if (term
->esc_args
[term
->esc_nargs
- 1] == ARG_DEFAULT
)
3206 term
->esc_args
[term
->esc_nargs
- 1] = 0;
3207 term
->esc_args
[term
->esc_nargs
- 1] =
3208 10 * term
->esc_args
[term
->esc_nargs
- 1] + c
- '0';
3210 term
->termstate
= SEEN_CSI
;
3211 } else if (c
== ';') {
3212 if (++term
->esc_nargs
<= ARGS_MAX
)
3213 term
->esc_args
[term
->esc_nargs
- 1] = ARG_DEFAULT
;
3214 term
->termstate
= SEEN_CSI
;
3215 } else if (c
< '@') {
3216 if (term
->esc_query
)
3217 term
->esc_query
= -1;
3219 term
->esc_query
= TRUE
;
3221 term
->esc_query
= c
;
3222 term
->termstate
= SEEN_CSI
;
3224 switch (ANSI(c
, term
->esc_query
)) {
3225 case 'A': /* CUU: move up N lines */
3226 move(term
, term
->curs
.x
,
3227 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3228 seen_disp_event(term
);
3230 case 'e': /* VPR: move down N lines */
3231 compatibility(ANSI
);
3233 case 'B': /* CUD: Cursor down */
3234 move(term
, term
->curs
.x
,
3235 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3236 seen_disp_event(term
);
3238 case ANSI('c', '>'): /* DA: report xterm version */
3239 compatibility(OTHER
);
3240 /* this reports xterm version 136 so that VIM can
3241 use the drag messages from the mouse reporting */
3243 ldisc_send(term
->ldisc
, "\033[>0;136;0c", 11, 0);
3245 case 'a': /* HPR: move right N cols */
3246 compatibility(ANSI
);
3248 case 'C': /* CUF: Cursor right */
3249 move(term
, term
->curs
.x
+ def(term
->esc_args
[0], 1),
3251 seen_disp_event(term
);
3253 case 'D': /* CUB: move left N cols */
3254 move(term
, term
->curs
.x
- def(term
->esc_args
[0], 1),
3256 seen_disp_event(term
);
3258 case 'E': /* CNL: move down N lines and CR */
3259 compatibility(ANSI
);
3261 term
->curs
.y
+ def(term
->esc_args
[0], 1), 1);
3262 seen_disp_event(term
);
3264 case 'F': /* CPL: move up N lines and CR */
3265 compatibility(ANSI
);
3267 term
->curs
.y
- def(term
->esc_args
[0], 1), 1);
3268 seen_disp_event(term
);
3271 case '`': /* HPA: set horizontal posn */
3272 compatibility(ANSI
);
3273 move(term
, def(term
->esc_args
[0], 1) - 1,
3275 seen_disp_event(term
);
3277 case 'd': /* VPA: set vertical posn */
3278 compatibility(ANSI
);
3279 move(term
, term
->curs
.x
,
3280 ((term
->dec_om ? term
->marg_t
: 0) +
3281 def(term
->esc_args
[0], 1) - 1),
3282 (term
->dec_om ?
2 : 0));
3283 seen_disp_event(term
);
3286 case 'f': /* HVP: set horz and vert posns at once */
3287 if (term
->esc_nargs
< 2)
3288 term
->esc_args
[1] = ARG_DEFAULT
;
3289 move(term
, def(term
->esc_args
[1], 1) - 1,
3290 ((term
->dec_om ? term
->marg_t
: 0) +
3291 def(term
->esc_args
[0], 1) - 1),
3292 (term
->dec_om ?
2 : 0));
3293 seen_disp_event(term
);
3295 case 'J': /* ED: erase screen or parts of it */
3297 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3300 erase_lots(term
, FALSE
, !!(i
& 2), !!(i
& 1));
3303 seen_disp_event(term
);
3305 case 'K': /* EL: erase line or parts of it */
3307 unsigned int i
= def(term
->esc_args
[0], 0) + 1;
3310 erase_lots(term
, TRUE
, !!(i
& 2), !!(i
& 1));
3312 seen_disp_event(term
);
3314 case 'L': /* IL: insert lines */
3315 compatibility(VT102
);
3316 if (term
->curs
.y
<= term
->marg_b
)
3317 scroll(term
, term
->curs
.y
, term
->marg_b
,
3318 -def(term
->esc_args
[0], 1), FALSE
);
3319 seen_disp_event(term
);
3321 case 'M': /* DL: delete lines */
3322 compatibility(VT102
);
3323 if (term
->curs
.y
<= term
->marg_b
)
3324 scroll(term
, term
->curs
.y
, term
->marg_b
,
3325 def(term
->esc_args
[0], 1),
3327 seen_disp_event(term
);
3329 case '@': /* ICH: insert chars */
3330 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3331 compatibility(VT102
);
3332 insch(term
, def(term
->esc_args
[0], 1));
3333 seen_disp_event(term
);
3335 case 'P': /* DCH: delete chars */
3336 compatibility(VT102
);
3337 insch(term
, -def(term
->esc_args
[0], 1));
3338 seen_disp_event(term
);
3340 case 'c': /* DA: terminal type query */
3341 compatibility(VT100
);
3342 /* This is the response for a VT102 */
3344 ldisc_send(term
->ldisc
, term
->id_string
,
3345 strlen(term
->id_string
), 0);
3347 case 'n': /* DSR: cursor position query */
3349 if (term
->esc_args
[0] == 6) {
3351 sprintf(buf
, "\033[%d;%dR", term
->curs
.y
+ 1,
3353 ldisc_send(term
->ldisc
, buf
, strlen(buf
), 0);
3354 } else if (term
->esc_args
[0] == 5) {
3355 ldisc_send(term
->ldisc
, "\033[0n", 4, 0);
3359 case 'h': /* SM: toggle modes to high */
3361 compatibility(VT100
);
3364 for (i
= 0; i
< term
->esc_nargs
; i
++)
3365 toggle_mode(term
, term
->esc_args
[i
],
3366 term
->esc_query
, TRUE
);
3369 case 'i': /* MC: Media copy */
3371 compatibility(VT100
);
3373 if (term
->esc_nargs
!= 1) break;
3374 if (term
->esc_args
[0] == 5 && *term
->cfg
.printer
) {
3375 term
->printing
= TRUE
;
3376 term
->only_printing
= !term
->esc_query
;
3377 term
->print_state
= 0;
3378 term_print_setup(term
);
3379 } else if (term
->esc_args
[0] == 4 &&
3381 term_print_finish(term
);
3385 case 'l': /* RM: toggle modes to low */
3387 compatibility(VT100
);
3390 for (i
= 0; i
< term
->esc_nargs
; i
++)
3391 toggle_mode(term
, term
->esc_args
[i
],
3392 term
->esc_query
, FALSE
);
3395 case 'g': /* TBC: clear tabs */
3396 compatibility(VT100
);
3397 if (term
->esc_nargs
== 1) {
3398 if (term
->esc_args
[0] == 0) {
3399 term
->tabs
[term
->curs
.x
] = FALSE
;
3400 } else if (term
->esc_args
[0] == 3) {
3402 for (i
= 0; i
< term
->cols
; i
++)
3403 term
->tabs
[i
] = FALSE
;
3407 case 'r': /* DECSTBM: set scroll margins */
3408 compatibility(VT100
);
3409 if (term
->esc_nargs
<= 2) {
3411 top
= def(term
->esc_args
[0], 1) - 1;
3412 bot
= (term
->esc_nargs
<= 1
3413 || term
->esc_args
[1] == 0 ?
3415 def(term
->esc_args
[1], term
->rows
)) - 1;
3416 if (bot
>= term
->rows
)
3417 bot
= term
->rows
- 1;
3418 /* VTTEST Bug 9 - if region is less than 2 lines
3419 * don't change region.
3421 if (bot
- top
> 0) {
3426 * I used to think the cursor should be
3427 * placed at the top of the newly marginned
3428 * area. Apparently not: VMS TPU falls over
3431 * Well actually it should for
3434 term
->curs
.y
= (term
->dec_om ?
3436 seen_disp_event(term
);
3440 case 'm': /* SGR: set graphics rendition */
3443 * A VT100 without the AVO only had one
3444 * attribute, either underline or
3445 * reverse video depending on the
3446 * cursor type, this was selected by
3450 * This is sometimes DIM, eg on the
3453 * This is sometimes INVIS various ANSI.
3455 * This like 22 disables BOLD, DIM and INVIS
3457 * The ANSI colours appear on any
3458 * terminal that has colour (obviously)
3459 * but the interaction between sgr0 and
3460 * the colours varies but is usually
3461 * related to the background colour
3462 * erase item. The interaction between
3463 * colour attributes and the mono ones
3464 * is also very implementation
3467 * The 39 and 49 attributes are likely
3468 * to be unimplemented.
3471 for (i
= 0; i
< term
->esc_nargs
; i
++) {
3472 switch (def(term
->esc_args
[i
], 0)) {
3473 case 0: /* restore defaults */
3474 term
->curr_attr
= term
->default_attr
;
3476 case 1: /* enable bold */
3477 compatibility(VT100AVO
);
3478 term
->curr_attr
|= ATTR_BOLD
;
3480 case 21: /* (enable double underline) */
3481 compatibility(OTHER
);
3482 case 4: /* enable underline */
3483 compatibility(VT100AVO
);
3484 term
->curr_attr
|= ATTR_UNDER
;
3486 case 5: /* enable blink */
3487 compatibility(VT100AVO
);
3488 term
->curr_attr
|= ATTR_BLINK
;
3490 case 6: /* SCO light bkgrd */
3491 compatibility(SCOANSI
);
3492 term
->blink_is_real
= FALSE
;
3493 term
->curr_attr
|= ATTR_BLINK
;
3494 term_schedule_tblink(term
);
3496 case 7: /* enable reverse video */
3497 term
->curr_attr
|= ATTR_REVERSE
;
3499 case 10: /* SCO acs off */
3500 compatibility(SCOANSI
);
3501 if (term
->cfg
.no_remote_charset
) break;
3502 term
->sco_acs
= 0; break;
3503 case 11: /* SCO acs on */
3504 compatibility(SCOANSI
);
3505 if (term
->cfg
.no_remote_charset
) break;
3506 term
->sco_acs
= 1; break;
3507 case 12: /* SCO acs on, |0x80 */
3508 compatibility(SCOANSI
);
3509 if (term
->cfg
.no_remote_charset
) break;
3510 term
->sco_acs
= 2; break;
3511 case 22: /* disable bold */
3512 compatibility2(OTHER
, VT220
);
3513 term
->curr_attr
&= ~ATTR_BOLD
;
3515 case 24: /* disable underline */
3516 compatibility2(OTHER
, VT220
);
3517 term
->curr_attr
&= ~ATTR_UNDER
;
3519 case 25: /* disable blink */
3520 compatibility2(OTHER
, VT220
);
3521 term
->curr_attr
&= ~ATTR_BLINK
;
3523 case 27: /* disable reverse video */
3524 compatibility2(OTHER
, VT220
);
3525 term
->curr_attr
&= ~ATTR_REVERSE
;
3536 term
->curr_attr
&= ~ATTR_FGMASK
;
3538 (term
->esc_args
[i
] - 30)<<ATTR_FGSHIFT
;
3548 /* aixterm-style bright foreground */
3549 term
->curr_attr
&= ~ATTR_FGMASK
;
3551 ((term
->esc_args
[i
] - 90 + 8)
3554 case 39: /* default-foreground */
3555 term
->curr_attr
&= ~ATTR_FGMASK
;
3556 term
->curr_attr
|= ATTR_DEFFG
;
3567 term
->curr_attr
&= ~ATTR_BGMASK
;
3569 (term
->esc_args
[i
] - 40)<<ATTR_BGSHIFT
;
3579 /* aixterm-style bright background */
3580 term
->curr_attr
&= ~ATTR_BGMASK
;
3582 ((term
->esc_args
[i
] - 100 + 8)
3585 case 49: /* default-background */
3586 term
->curr_attr
&= ~ATTR_BGMASK
;
3587 term
->curr_attr
|= ATTR_DEFBG
;
3589 case 38: /* xterm 256-colour mode */
3590 if (i
+2 < term
->esc_nargs
&&
3591 term
->esc_args
[i
+1] == 5) {
3592 term
->curr_attr
&= ~ATTR_FGMASK
;
3594 ((term
->esc_args
[i
+2] & 0xFF)
3599 case 48: /* xterm 256-colour mode */
3600 if (i
+2 < term
->esc_nargs
&&
3601 term
->esc_args
[i
+1] == 5) {
3602 term
->curr_attr
&= ~ATTR_BGMASK
;
3604 ((term
->esc_args
[i
+2] & 0xFF)
3611 set_erase_char(term
);
3614 case 's': /* save cursor */
3615 save_cursor(term
, TRUE
);
3617 case 'u': /* restore cursor */
3618 save_cursor(term
, FALSE
);
3619 seen_disp_event(term
);
3621 case 't': /* DECSLPP: set page size - ie window height */
3623 * VT340/VT420 sequence DECSLPP, DEC only allows values
3624 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3625 * illegal values (eg first arg 1..9) for window changing
3628 if (term
->esc_nargs
<= 1
3629 && (term
->esc_args
[0] < 1 ||
3630 term
->esc_args
[0] >= 24)) {
3631 compatibility(VT340TEXT
);
3632 if (!term
->cfg
.no_remote_resize
)
3633 request_resize(term
->frontend
, term
->cols
,
3634 def(term
->esc_args
[0], 24));
3636 } else if (term
->esc_nargs
>= 1 &&
3637 term
->esc_args
[0] >= 1 &&
3638 term
->esc_args
[0] < 24) {
3639 compatibility(OTHER
);
3641 switch (term
->esc_args
[0]) {
3645 set_iconic(term
->frontend
, FALSE
);
3648 set_iconic(term
->frontend
, TRUE
);
3651 if (term
->esc_nargs
>= 3) {
3652 if (!term
->cfg
.no_remote_resize
)
3653 move_window(term
->frontend
,
3654 def(term
->esc_args
[1], 0),
3655 def(term
->esc_args
[2], 0));
3659 /* We should resize the window to a given
3660 * size in pixels here, but currently our
3661 * resizing code isn't healthy enough to
3666 set_zorder(term
->frontend
, TRUE
);
3669 /* move to bottom */
3670 set_zorder(term
->frontend
, FALSE
);
3673 refresh_window(term
->frontend
);
3676 if (term
->esc_nargs
>= 3) {
3677 if (!term
->cfg
.no_remote_resize
)
3678 request_resize(term
->frontend
,
3679 def(term
->esc_args
[2], term
->cfg
.width
),
3680 def(term
->esc_args
[1], term
->cfg
.height
));
3684 if (term
->esc_nargs
>= 2)
3685 set_zoomed(term
->frontend
,
3691 ldisc_send(term
->ldisc
,
3692 is_iconic(term
->frontend
) ?
3693 "\033[1t" : "\033[2t", 4, 0);
3697 get_window_pos(term
->frontend
, &x
, &y
);
3698 len
= sprintf(buf
, "\033[3;%d;%dt", x
, y
);
3699 ldisc_send(term
->ldisc
, buf
, len
, 0);
3704 get_window_pixels(term
->frontend
, &x
, &y
);
3705 len
= sprintf(buf
, "\033[4;%d;%dt", x
, y
);
3706 ldisc_send(term
->ldisc
, buf
, len
, 0);
3711 len
= sprintf(buf
, "\033[8;%d;%dt",
3712 term
->rows
, term
->cols
);
3713 ldisc_send(term
->ldisc
, buf
, len
, 0);
3718 * Hmmm. Strictly speaking we
3719 * should return `the size of the
3720 * screen in characters', but
3721 * that's not easy: (a) window
3722 * furniture being what it is it's
3723 * hard to compute, and (b) in
3724 * resize-font mode maximising the
3725 * window wouldn't change the
3726 * number of characters. *shrug*. I
3727 * think we'll ignore it for the
3728 * moment and see if anyone
3729 * complains, and then ask them
3730 * what they would like it to do.
3735 !term
->cfg
.no_remote_qtitle
) {
3736 p
= get_window_title(term
->frontend
, TRUE
);
3738 ldisc_send(term
->ldisc
, "\033]L", 3, 0);
3739 ldisc_send(term
->ldisc
, p
, len
, 0);
3740 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3745 !term
->cfg
.no_remote_qtitle
) {
3746 p
= get_window_title(term
->frontend
,FALSE
);
3748 ldisc_send(term
->ldisc
, "\033]l", 3, 0);
3749 ldisc_send(term
->ldisc
, p
, len
, 0);
3750 ldisc_send(term
->ldisc
, "\033\\", 2, 0);
3756 case 'S': /* SU: Scroll up */
3757 compatibility(SCOANSI
);
3758 scroll(term
, term
->marg_t
, term
->marg_b
,
3759 def(term
->esc_args
[0], 1), TRUE
);
3760 term
->wrapnext
= FALSE
;
3761 seen_disp_event(term
);
3763 case 'T': /* SD: Scroll down */
3764 compatibility(SCOANSI
);
3765 scroll(term
, term
->marg_t
, term
->marg_b
,
3766 -def(term
->esc_args
[0], 1), TRUE
);
3767 term
->wrapnext
= FALSE
;
3768 seen_disp_event(term
);
3770 case ANSI('|', '*'): /* DECSNLS */
3772 * Set number of lines on screen
3773 * VT420 uses VGA like hardware and can
3774 * support any size in reasonable range
3775 * (24..49 AIUI) with no default specified.
3777 compatibility(VT420
);
3778 if (term
->esc_nargs
== 1 && term
->esc_args
[0] > 0) {
3779 if (!term
->cfg
.no_remote_resize
)
3780 request_resize(term
->frontend
, term
->cols
,
3781 def(term
->esc_args
[0],
3786 case ANSI('|', '$'): /* DECSCPP */
3788 * Set number of columns per page
3789 * Docs imply range is only 80 or 132, but
3792 compatibility(VT340TEXT
);
3793 if (term
->esc_nargs
<= 1) {
3794 if (!term
->cfg
.no_remote_resize
)
3795 request_resize(term
->frontend
,
3796 def(term
->esc_args
[0],
3797 term
->cfg
.width
), term
->rows
);
3801 case 'X': /* ECH: write N spaces w/o moving cursor */
3802 /* XXX VTTEST says this is vt220, vt510 manual
3804 compatibility(ANSIMIN
);
3806 int n
= def(term
->esc_args
[0], 1);
3808 int p
= term
->curs
.x
;
3809 termline
*cline
= scrlineptr(term
->curs
.y
);
3811 if (n
> term
->cols
- term
->curs
.x
)
3812 n
= term
->cols
- term
->curs
.x
;
3813 cursplus
= term
->curs
;
3815 check_boundary(term
, term
->curs
.x
, term
->curs
.y
);
3816 check_boundary(term
, term
->curs
.x
+n
, term
->curs
.y
);
3817 check_selection(term
, term
->curs
, cursplus
);
3819 copy_termchar(cline
, p
++,
3821 seen_disp_event(term
);
3824 case 'x': /* DECREQTPARM: report terminal characteristics */
3825 compatibility(VT100
);
3828 int i
= def(term
->esc_args
[0], 0);
3829 if (i
== 0 || i
== 1) {
3830 strcpy(buf
, "\033[2;1;1;112;112;1;0x");
3832 ldisc_send(term
->ldisc
, buf
, 20, 0);
3837 compatibility(OTHER
);
3839 int i
= def(term
->esc_args
[0], 1);
3840 pos old_curs
= term
->curs
;
3842 for(;i
>0 && term
->curs
.x
>0; i
--) {
3845 } while (term
->curs
.x
>0 &&
3846 !term
->tabs
[term
->curs
.x
]);
3848 check_selection(term
, old_curs
, term
->curs
);
3851 case ANSI('c', '='): /* Hide or Show Cursor */
3852 compatibility(SCOANSI
);
3853 switch(term
->esc_args
[0]) {
3854 case 0: /* hide cursor */
3855 term
->cursor_on
= FALSE
;
3857 case 1: /* restore cursor */
3858 term
->big_cursor
= FALSE
;
3859 term
->cursor_on
= TRUE
;
3861 case 2: /* block cursor */
3862 term
->big_cursor
= TRUE
;
3863 term
->cursor_on
= TRUE
;
3867 case ANSI('C', '='):
3869 * set cursor start on scanline esc_args[0] and
3870 * end on scanline esc_args[1].If you set
3871 * the bottom scan line to a value less than
3872 * the top scan line, the cursor will disappear.
3874 compatibility(SCOANSI
);
3875 if (term
->esc_nargs
>= 2) {
3876 if (term
->esc_args
[0] > term
->esc_args
[1])
3877 term
->cursor_on
= FALSE
;
3879 term
->cursor_on
= TRUE
;
3882 case ANSI('D', '='):
3883 compatibility(SCOANSI
);
3884 term
->blink_is_real
= FALSE
;
3885 term_schedule_tblink(term
);
3886 if (term
->esc_args
[0]>=1)
3887 term
->curr_attr
|= ATTR_BLINK
;
3889 term
->curr_attr
&= ~ATTR_BLINK
;
3891 case ANSI('E', '='):
3892 compatibility(SCOANSI
);
3893 term
->blink_is_real
= (term
->esc_args
[0] >= 1);
3894 term_schedule_tblink(term
);
3896 case ANSI('F', '='): /* set normal foreground */
3897 compatibility(SCOANSI
);
3898 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3900 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3901 (term
->esc_args
[0] & 0x8)) <<
3903 term
->curr_attr
&= ~ATTR_FGMASK
;
3904 term
->curr_attr
|= colour
;
3905 term
->default_attr
&= ~ATTR_FGMASK
;
3906 term
->default_attr
|= colour
;
3907 set_erase_char(term
);
3910 case ANSI('G', '='): /* set normal background */
3911 compatibility(SCOANSI
);
3912 if (term
->esc_args
[0] >= 0 && term
->esc_args
[0] < 16) {
3914 (sco2ansicolour
[term
->esc_args
[0] & 0x7] |
3915 (term
->esc_args
[0] & 0x8)) <<
3917 term
->curr_attr
&= ~ATTR_BGMASK
;
3918 term
->curr_attr
|= colour
;
3919 term
->default_attr
&= ~ATTR_BGMASK
;
3920 term
->default_attr
|= colour
;
3921 set_erase_char(term
);
3924 case ANSI('L', '='):
3925 compatibility(SCOANSI
);
3926 term
->use_bce
= (term
->esc_args
[0] <= 0);
3927 set_erase_char(term
);
3929 case ANSI('p', '"'): /* DECSCL: set compat level */
3931 * Allow the host to make this emulator a
3932 * 'perfect' VT102. This first appeared in
3933 * the VT220, but we do need to get back to
3934 * PuTTY mode so I won't check it.
3936 * The arg in 40..42,50 are a PuTTY extension.
3937 * The 2nd arg, 8bit vs 7bit is not checked.
3939 * Setting VT102 mode should also change
3940 * the Fkeys to generate PF* codes as a
3941 * real VT102 has no Fkeys. The VT220 does
3942 * this, F11..F13 become ESC,BS,LF other
3943 * Fkeys send nothing.
3945 * Note ESC c will NOT change this!
3948 switch (term
->esc_args
[0]) {
3950 term
->compatibility_level
&= ~TM_VTXXX
;
3951 term
->compatibility_level
|= TM_VT102
;
3954 term
->compatibility_level
&= ~TM_VTXXX
;
3955 term
->compatibility_level
|= TM_VT220
;
3959 if (term
->esc_args
[0] > 60 &&
3960 term
->esc_args
[0] < 70)
3961 term
->compatibility_level
|= TM_VTXXX
;
3965 term
->compatibility_level
&= TM_VTXXX
;
3968 term
->compatibility_level
= TM_PUTTY
;
3971 term
->compatibility_level
= TM_SCOANSI
;
3975 term
->compatibility_level
= TM_PUTTY
;
3981 /* Change the response to CSI c */
3982 if (term
->esc_args
[0] == 50) {
3985 strcpy(term
->id_string
, "\033[?");
3986 for (i
= 1; i
< term
->esc_nargs
; i
++) {
3988 strcat(term
->id_string
, ";");
3989 sprintf(lbuf
, "%d", term
->esc_args
[i
]);
3990 strcat(term
->id_string
, lbuf
);
3992 strcat(term
->id_string
, "c");
3995 /* Is this a good idea ?
3996 * Well we should do a soft reset at this point ...
3998 if (!has_compat(VT420
) && has_compat(VT100
)) {
3999 if (!term
->cfg
.no_remote_resize
) {
4000 if (term
->reset_132
)
4001 request_resize(132, 24);
4003 request_resize(80, 24);
4011 term
->osc_w
= FALSE
;
4013 case 'P': /* Linux palette sequence */
4014 term
->termstate
= SEEN_OSC_P
;
4015 term
->osc_strlen
= 0;
4017 case 'R': /* Linux palette reset */
4018 palette_reset(term
->frontend
);
4019 term_invalidate(term
);
4020 term
->termstate
= TOPLEVEL
;
4022 case 'W': /* word-set */
4023 term
->termstate
= SEEN_OSC_W
;
4036 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4040 * Grotty hack to support xterm and DECterm title
4041 * sequences concurrently.
4043 if (term
->esc_args
[0] == 2) {
4044 term
->esc_args
[0] = 1;
4047 /* else fall through */
4049 term
->termstate
= OSC_STRING
;
4050 term
->osc_strlen
= 0;
4055 * This OSC stuff is EVIL. It takes just one character to get into
4056 * sysline mode and it's not initially obvious how to get out.
4057 * So I've added CR and LF as string aborts.
4058 * This shouldn't effect compatibility as I believe embedded
4059 * control characters are supposed to be interpreted (maybe?)
4060 * and they don't display anything useful anyway.
4064 if (c
== '\012' || c
== '\015') {
4065 term
->termstate
= TOPLEVEL
;
4066 } else if (c
== 0234 || c
== '\007') {
4068 * These characters terminate the string; ST and BEL
4069 * terminate the sequence and trigger instant
4070 * processing of it, whereas ESC goes back to SEEN_ESC
4071 * mode unless it is followed by \, in which case it is
4072 * synonymous with ST in the first place.
4075 term
->termstate
= TOPLEVEL
;
4076 } else if (c
== '\033')
4077 term
->termstate
= OSC_MAYBE_ST
;
4078 else if (term
->osc_strlen
< OSC_STR_MAX
)
4079 term
->osc_string
[term
->osc_strlen
++] = (char)c
;
4083 int max
= (term
->osc_strlen
== 0 ?
21 : 16);
4085 if ((int)c
>= '0' && (int)c
<= '9')
4087 else if ((int)c
>= 'A' && (int)c
<= 'A' + max
- 10)
4089 else if ((int)c
>= 'a' && (int)c
<= 'a' + max
- 10)
4092 term
->termstate
= TOPLEVEL
;
4095 term
->osc_string
[term
->osc_strlen
++] = val
;
4096 if (term
->osc_strlen
>= 7) {
4097 palette_set(term
->frontend
, term
->osc_string
[0],
4098 term
->osc_string
[1] * 16 + term
->osc_string
[2],
4099 term
->osc_string
[3] * 16 + term
->osc_string
[4],
4100 term
->osc_string
[5] * 16 + term
->osc_string
[6]);
4101 term_invalidate(term
);
4102 term
->termstate
= TOPLEVEL
;
4118 term
->esc_args
[0] = 10 * term
->esc_args
[0] + c
- '0';
4121 term
->termstate
= OSC_STRING
;
4122 term
->osc_strlen
= 0;
4126 term
->termstate
= TOPLEVEL
;
4127 seen_disp_event(term
);
4130 move(term
, term
->curs
.x
, term
->curs
.y
- 1, 1);
4133 move(term
, term
->curs
.x
, term
->curs
.y
+ 1, 1);
4136 move(term
, term
->curs
.x
+ 1, term
->curs
.y
, 1);
4139 move(term
, term
->curs
.x
- 1, term
->curs
.y
, 1);
4142 * From the VT100 Manual
4143 * NOTE: The special graphics characters in the VT100
4144 * are different from those in the VT52
4146 * From VT102 manual:
4147 * 137 _ Blank - Same
4148 * 140 ` Reserved - Humm.
4149 * 141 a Solid rectangle - Similar
4150 * 142 b 1/ - Top half of fraction for the
4151 * 143 c 3/ - subscript numbers below.
4154 * 146 f Degrees - Same
4155 * 147 g Plus or minus - Same
4157 * 151 i Ellipsis (dots)
4160 * 154 l Bar at scan 0
4161 * 155 m Bar at scan 1
4162 * 156 n Bar at scan 2
4163 * 157 o Bar at scan 3 - Similar
4164 * 160 p Bar at scan 4 - Similar
4165 * 161 q Bar at scan 5 - Similar
4166 * 162 r Bar at scan 6 - Same
4167 * 163 s Bar at scan 7 - Similar
4182 term
->cset_attr
[term
->cset
= 0] = CSET_LINEDRW
;
4185 term
->cset_attr
[term
->cset
= 0] = CSET_ASCII
;
4188 move(term
, 0, 0, 0);
4191 if (term
->curs
.y
== 0)
4192 scroll(term
, 0, term
->rows
- 1, -1, TRUE
);
4193 else if (term
->curs
.y
> 0)
4195 term
->wrapnext
= FALSE
;
4198 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4202 erase_lots(term
, TRUE
, FALSE
, TRUE
);
4206 /* XXX Print cursor line */
4209 /* XXX Start controller mode */
4212 /* XXX Stop controller mode */
4216 term
->termstate
= VT52_Y1
;
4220 ldisc_send(term
->ldisc
, "\033/Z", 3, 0);
4223 term
->app_keypad_keys
= TRUE
;
4226 term
->app_keypad_keys
= FALSE
;
4229 /* XXX This should switch to VT100 mode not current or default
4230 * VT mode. But this will only have effect in a VT220+
4233 term
->vt52_mode
= FALSE
;
4234 term
->blink_is_real
= term
->cfg
.blinktext
;
4235 term_schedule_tblink(term
);
4239 /* XXX Enter auto print mode */
4242 /* XXX Exit auto print mode */
4245 /* XXX Print screen */
4251 /* compatibility(ATARI) */
4252 move(term
, 0, 0, 0);
4253 erase_lots(term
, FALSE
, FALSE
, TRUE
);
4257 /* compatibility(ATARI) */
4258 if (term
->curs
.y
<= term
->marg_b
)
4259 scroll(term
, term
->curs
.y
, term
->marg_b
, -1, FALSE
);
4262 /* compatibility(ATARI) */
4263 if (term
->curs
.y
<= term
->marg_b
)
4264 scroll(term
, term
->curs
.y
, term
->marg_b
, 1, TRUE
);
4267 /* compatibility(ATARI) */
4268 term
->termstate
= VT52_FG
;
4271 /* compatibility(ATARI) */
4272 term
->termstate
= VT52_BG
;
4275 /* compatibility(ATARI) */
4276 erase_lots(term
, FALSE
, TRUE
, FALSE
);
4280 /* compatibility(ATARI) */
4281 term
->cursor_on
= TRUE
;
4284 /* compatibility(ATARI) */
4285 term
->cursor_on
= FALSE
;
4287 /* case 'j': Save cursor position - broken on ST */
4288 /* case 'k': Restore cursor position */
4290 /* compatibility(ATARI) */
4291 erase_lots(term
, TRUE
, TRUE
, TRUE
);
4293 term
->wrapnext
= FALSE
;
4296 /* compatibility(ATARI) */
4297 erase_lots(term
, TRUE
, TRUE
, FALSE
);
4300 /* compatibility(ATARI) */
4301 term
->curr_attr
|= ATTR_REVERSE
;
4304 /* compatibility(ATARI) */
4305 term
->curr_attr
&= ~ATTR_REVERSE
;
4307 case 'v': /* wrap Autowrap on - Wyse style */
4308 /* compatibility(ATARI) */
4311 case 'w': /* Autowrap off */
4312 /* compatibility(ATARI) */
4317 /* compatibility(OTHER) */
4318 term
->vt52_bold
= FALSE
;
4319 term
->curr_attr
= ATTR_DEFAULT
;
4320 set_erase_char(term
);
4323 /* compatibility(VI50) */
4324 term
->curr_attr
|= ATTR_UNDER
;
4327 /* compatibility(VI50) */
4328 term
->curr_attr
&= ~ATTR_UNDER
;
4331 /* compatibility(VI50) */
4332 term
->vt52_bold
= TRUE
;
4333 term
->curr_attr
|= ATTR_BOLD
;
4336 /* compatibility(VI50) */
4337 term
->vt52_bold
= FALSE
;
4338 term
->curr_attr
&= ~ATTR_BOLD
;
4344 term
->termstate
= VT52_Y2
;
4345 move(term
, term
->curs
.x
, c
- ' ', 0);
4348 term
->termstate
= TOPLEVEL
;
4349 move(term
, c
- ' ', term
->curs
.y
, 0);
4354 term
->termstate
= TOPLEVEL
;
4355 term
->curr_attr
&= ~ATTR_FGMASK
;
4356 term
->curr_attr
&= ~ATTR_BOLD
;
4357 term
->curr_attr
|= (c
& 0xF) << ATTR_FGSHIFT
;
4358 set_erase_char(term
);
4361 term
->termstate
= TOPLEVEL
;
4362 term
->curr_attr
&= ~ATTR_BGMASK
;
4363 term
->curr_attr
&= ~ATTR_BLINK
;
4364 term
->curr_attr
|= (c
& 0xF) << ATTR_BGSHIFT
;
4365 set_erase_char(term
);
4368 default: break; /* placate gcc warning about enum use */
4370 if (term
->selstate
!= NO_SELECTION
) {
4371 pos cursplus
= term
->curs
;
4373 check_selection(term
, term
->curs
, cursplus
);
4377 term_print_flush(term
);
4378 if (term
->cfg
.logflush
)
4379 logflush(term
->logctx
);
4383 * To prevent having to run the reasonably tricky bidi algorithm
4384 * too many times, we maintain a cache of the last lineful of data
4385 * fed to the algorithm on each line of the display.
4387 static int term_bidi_cache_hit(Terminal
*term
, int line
,
4388 termchar
*lbefore
, int width
)
4392 if (!term
->pre_bidi_cache
)
4393 return FALSE
; /* cache doesn't even exist yet! */
4395 if (line
>= term
->bidi_cache_size
)
4396 return FALSE
; /* cache doesn't have this many lines */
4398 if (!term
->pre_bidi_cache
[line
].chars
)
4399 return FALSE
; /* cache doesn't contain _this_ line */
4401 if (term
->pre_bidi_cache
[line
].width
!= width
)
4402 return FALSE
; /* line is wrong width */
4404 for (i
= 0; i
< width
; i
++)
4405 if (!termchars_equal(term
->pre_bidi_cache
[line
].chars
+i
, lbefore
+i
))
4406 return FALSE
; /* line doesn't match cache */
4408 return TRUE
; /* it didn't match. */
4411 static void term_bidi_cache_store(Terminal
*term
, int line
, termchar
*lbefore
,
4412 termchar
*lafter
, bidi_char
*wcTo
,
4413 int width
, int size
)
4417 if (!term
->pre_bidi_cache
|| term
->bidi_cache_size
<= line
) {
4418 int j
= term
->bidi_cache_size
;
4419 term
->bidi_cache_size
= line
+1;
4420 term
->pre_bidi_cache
= sresize(term
->pre_bidi_cache
,
4421 term
->bidi_cache_size
,
4422 struct bidi_cache_entry
);
4423 term
->post_bidi_cache
= sresize(term
->post_bidi_cache
,
4424 term
->bidi_cache_size
,
4425 struct bidi_cache_entry
);
4426 while (j
< term
->bidi_cache_size
) {
4427 term
->pre_bidi_cache
[j
].chars
=
4428 term
->post_bidi_cache
[j
].chars
= NULL
;
4429 term
->pre_bidi_cache
[j
].width
=
4430 term
->post_bidi_cache
[j
].width
= -1;
4431 term
->pre_bidi_cache
[j
].forward
=
4432 term
->post_bidi_cache
[j
].forward
= NULL
;
4433 term
->pre_bidi_cache
[j
].backward
=
4434 term
->post_bidi_cache
[j
].backward
= NULL
;
4439 sfree(term
->pre_bidi_cache
[line
].chars
);
4440 sfree(term
->post_bidi_cache
[line
].chars
);
4441 sfree(term
->post_bidi_cache
[line
].forward
);
4442 sfree(term
->post_bidi_cache
[line
].backward
);
4444 term
->pre_bidi_cache
[line
].width
= width
;
4445 term
->pre_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4446 term
->post_bidi_cache
[line
].width
= width
;
4447 term
->post_bidi_cache
[line
].chars
= snewn(size
, termchar
);
4448 term
->post_bidi_cache
[line
].forward
= snewn(width
, int);
4449 term
->post_bidi_cache
[line
].backward
= snewn(width
, int);
4451 memcpy(term
->pre_bidi_cache
[line
].chars
, lbefore
, size
* TSIZE
);
4452 memcpy(term
->post_bidi_cache
[line
].chars
, lafter
, size
* TSIZE
);
4453 memset(term
->post_bidi_cache
[line
].forward
, 0, width
* sizeof(int));
4454 memset(term
->post_bidi_cache
[line
].backward
, 0, width
* sizeof(int));
4456 for (i
= 0; i
< width
; i
++) {
4457 int p
= wcTo
[i
].index
;
4459 assert(0 <= p
&& p
< width
);
4461 term
->post_bidi_cache
[line
].backward
[i
] = p
;
4462 term
->post_bidi_cache
[line
].forward
[p
] = i
;
4467 * Prepare the bidi information for a screen line. Returns the
4468 * transformed list of termchars, or NULL if no transformation at
4469 * all took place (because bidi is disabled). If return was
4470 * non-NULL, auxiliary information such as the forward and reverse
4471 * mappings of permutation position are available in
4472 * term->post_bidi_cache[scr_y].*.
4474 static termchar
*term_bidi_line(Terminal
*term
, struct termline
*ldata
,
4480 /* Do Arabic shaping and bidi. */
4481 if(!term
->cfg
.bidi
|| !term
->cfg
.arabicshaping
) {
4483 if (!term_bidi_cache_hit(term
, scr_y
, ldata
->chars
, term
->cols
)) {
4485 if (term
->wcFromTo_size
< term
->cols
) {
4486 term
->wcFromTo_size
= term
->cols
;
4487 term
->wcFrom
= sresize(term
->wcFrom
, term
->wcFromTo_size
,
4489 term
->wcTo
= sresize(term
->wcTo
, term
->wcFromTo_size
,
4493 for(it
=0; it
<term
->cols
; it
++)
4495 unsigned long uc
= (ldata
->chars
[it
].chr
);
4497 switch (uc
& CSET_MASK
) {
4499 if (!term
->cfg
.rawcnp
) {
4500 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
4504 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
4507 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
4510 switch (uc
& CSET_MASK
) {
4512 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
4515 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
4519 term
->wcFrom
[it
].origwc
= term
->wcFrom
[it
].wc
=
4521 term
->wcFrom
[it
].index
= it
;
4525 do_bidi(term
->wcFrom
, term
->cols
);
4527 /* this is saved iff done from inside the shaping */
4528 if(!term
->cfg
.bidi
&& term
->cfg
.arabicshaping
)
4529 for(it
=0; it
<term
->cols
; it
++)
4530 term
->wcTo
[it
] = term
->wcFrom
[it
];
4532 if(!term
->cfg
.arabicshaping
)
4533 do_shape(term
->wcFrom
, term
->wcTo
, term
->cols
);
4535 if (term
->ltemp_size
< ldata
->size
) {
4536 term
->ltemp_size
= ldata
->size
;
4537 term
->ltemp
= sresize(term
->ltemp
, term
->ltemp_size
,
4541 memcpy(term
->ltemp
, ldata
->chars
, ldata
->size
* TSIZE
);
4543 for(it
=0; it
<term
->cols
; it
++)
4545 term
->ltemp
[it
] = ldata
->chars
[term
->wcTo
[it
].index
];
4546 if (term
->ltemp
[it
].cc_next
)
4547 term
->ltemp
[it
].cc_next
-=
4548 it
- term
->wcTo
[it
].index
;
4550 if (term
->wcTo
[it
].origwc
!= term
->wcTo
[it
].wc
)
4551 term
->ltemp
[it
].chr
= term
->wcTo
[it
].wc
;
4553 term_bidi_cache_store(term
, scr_y
, ldata
->chars
,
4554 term
->ltemp
, term
->wcTo
,
4555 term
->cols
, ldata
->size
);
4557 lchars
= term
->ltemp
;
4559 lchars
= term
->post_bidi_cache
[scr_y
].chars
;
4569 * Given a context, update the window. Out of paranoia, we don't
4570 * allow WM_PAINT responses to do scrolling optimisations.
4572 static void do_paint(Terminal
*term
, Context ctx
, int may_optimise
)
4574 int i
, j
, our_curs_y
, our_curs_x
;
4579 #ifdef OPTIMISE_SCROLL
4580 struct scrollregion
*sr
;
4581 #endif /* OPTIMISE_SCROLL */
4585 ch
= snewn(chlen
, wchar_t);
4587 newline
= snewn(term
->cols
, termchar
);
4589 rv
= (!term
->rvideo
^ !term
->in_vbell ? ATTR_REVERSE
: 0);
4592 * screen array, disptop, scrtop,
4594 * cfg.blinkpc, blink_is_real, tblinker,
4595 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4598 /* Has the cursor position or type changed ? */
4599 if (term
->cursor_on
) {
4600 if (term
->has_focus
) {
4601 if (term
->cblinker
|| !term
->cfg
.blink_cur
)
4602 cursor
= TATTR_ACTCURS
;
4606 cursor
= TATTR_PASCURS
;
4608 cursor
|= TATTR_RIGHTCURS
;
4611 our_curs_y
= term
->curs
.y
- term
->disptop
;
4614 * Adjust the cursor position:
4616 * - in the case where it's resting on the right-hand half
4617 * of a CJK wide character. xterm's behaviour here,
4618 * which seems adequate to me, is to display the cursor
4619 * covering the _whole_ character, exactly as if it were
4620 * one space to the left.
4622 termline
*ldata
= lineptr(term
->curs
.y
);
4625 our_curs_x
= term
->curs
.x
;
4627 if ( (lchars
= term_bidi_line(term
, ldata
, our_curs_y
)) != NULL
) {
4628 our_curs_x
= term
->post_bidi_cache
[our_curs_y
].forward
[our_curs_x
];
4630 lchars
= ldata
->chars
;
4632 if (our_curs_x
> 0 &&
4633 lchars
[our_curs_x
].chr
== UCSWIDE
)
4640 * If the cursor is not where it was last time we painted, and
4641 * its previous position is visible on screen, invalidate its
4642 * previous position.
4644 if (term
->dispcursy
>= 0 &&
4645 (term
->curstype
!= cursor
||
4646 term
->dispcursy
!= our_curs_y
||
4647 term
->dispcursx
!= our_curs_x
)) {
4648 termchar
*dispcurs
= term
->disptext
[term
->dispcursy
]->chars
+
4651 if (term
->dispcursx
> 0 && dispcurs
->chr
== UCSWIDE
)
4652 dispcurs
[-1].attr
|= ATTR_INVALID
;
4653 if (term
->dispcursx
< term
->cols
-1 && dispcurs
[1].chr
== UCSWIDE
)
4654 dispcurs
[1].attr
|= ATTR_INVALID
;
4655 dispcurs
->attr
|= ATTR_INVALID
;
4659 term
->dispcursx
= term
->dispcursy
= -1;
4661 #ifdef OPTIMISE_SCROLL
4663 sr
= term
->scrollhead
;
4665 struct scrollregion
*next
= sr
->next
;
4666 do_scroll(ctx
, sr
->topline
, sr
->botline
, sr
->lines
);
4670 term
->scrollhead
= term
->scrolltail
= NULL
;
4671 #endif /* OPTIMISE_SCROLL */
4673 /* The normal screen data */
4674 for (i
= 0; i
< term
->rows
; i
++) {
4677 int dirty_line
, dirty_run
, selected
;
4678 unsigned long attr
= 0, cset
= 0;
4679 int updated_line
= 0;
4682 int last_run_dirty
= 0;
4683 int laststart
, dirtyrect
;
4686 scrpos
.y
= i
+ term
->disptop
;
4687 ldata
= lineptr(scrpos
.y
);
4689 /* Do Arabic shaping and bidi. */
4690 lchars
= term_bidi_line(term
, ldata
, i
);
4692 backward
= term
->post_bidi_cache
[i
].backward
;
4694 lchars
= ldata
->chars
;
4699 * First loop: work along the line deciding what we want
4700 * each character cell to look like.
4702 for (j
= 0; j
< term
->cols
; j
++) {
4703 unsigned long tattr
, tchar
;
4704 termchar
*d
= lchars
+ j
;
4705 scrpos
.x
= backward ? backward
[j
] : j
;
4710 if (!term
->cfg
.ansi_colour
)
4711 tattr
= (tattr
& ~(ATTR_FGMASK
| ATTR_BGMASK
)) |
4712 ATTR_DEFFG
| ATTR_DEFBG
;
4714 if (!term
->cfg
.xterm_256_colour
) {
4716 colour
= (tattr
& ATTR_FGMASK
) >> ATTR_FGSHIFT
;
4717 if (colour
>= 16 && colour
< 256)
4718 tattr
= (tattr
&~ ATTR_FGMASK
) | ATTR_DEFFG
;
4719 colour
= (tattr
& ATTR_BGMASK
) >> ATTR_BGSHIFT
;
4720 if (colour
>= 16 && colour
< 256)
4721 tattr
= (tattr
&~ ATTR_BGMASK
) | ATTR_DEFBG
;
4724 switch (tchar
& CSET_MASK
) {
4726 tchar
= term
->ucsdata
->unitab_line
[tchar
& 0xFF];
4729 tchar
= term
->ucsdata
->unitab_xterm
[tchar
& 0xFF];
4732 tchar
= term
->ucsdata
->unitab_scoacs
[tchar
&0xFF];
4735 if (j
< term
->cols
-1 && d
[1].chr
== UCSWIDE
)
4738 /* Video reversing things */
4739 if (term
->selstate
== DRAGGING
|| term
->selstate
== SELECTED
) {
4740 if (term
->seltype
== LEXICOGRAPHIC
)
4741 selected
= (posle(term
->selstart
, scrpos
) &&
4742 poslt(scrpos
, term
->selend
));
4744 selected
= (posPle(term
->selstart
, scrpos
) &&
4745 posPlt(scrpos
, term
->selend
));
4749 ^ (selected ? ATTR_REVERSE
: 0));
4751 /* 'Real' blinking ? */
4752 if (term
->blink_is_real
&& (tattr
& ATTR_BLINK
)) {
4753 if (term
->has_focus
&& term
->tblinker
) {
4754 tchar
= term
->ucsdata
->unitab_line
[(unsigned char)' '];
4756 tattr
&= ~ATTR_BLINK
;
4760 * Check the font we'll _probably_ be using to see if
4761 * the character is wide when we don't want it to be.
4763 if (tchar
!= term
->disptext
[i
]->chars
[j
].chr
||
4764 tattr
!= (term
->disptext
[i
]->chars
[j
].attr
&~
4765 (ATTR_NARROW
| DATTR_MASK
))) {
4766 if ((tattr
& ATTR_WIDE
) == 0 && char_width(ctx
, tchar
) == 2)
4767 tattr
|= ATTR_NARROW
;
4768 } else if (term
->disptext
[i
]->chars
[j
].attr
& ATTR_NARROW
)
4769 tattr
|= ATTR_NARROW
;
4771 if (i
== our_curs_y
&& j
== our_curs_x
) {
4773 term
->curstype
= cursor
;
4774 term
->dispcursx
= j
;
4775 term
->dispcursy
= i
;
4779 newline
[j
].attr
= tattr
;
4780 newline
[j
].chr
= tchar
;
4781 /* Combining characters are still read from lchars */
4782 newline
[j
].cc_next
= 0;
4786 * Now loop over the line again, noting where things have
4789 * During this loop, we keep track of where we last saw
4790 * DATTR_STARTRUN. Any mismatch automatically invalidates
4791 * _all_ of the containing run that was last printed: that
4792 * is, any rectangle that was drawn in one go in the
4793 * previous update should be either left completely alone
4794 * or overwritten in its entirety. This, along with the
4795 * expectation that front ends clip all text runs to their
4796 * bounding rectangle, should solve any possible problems
4797 * with fonts that overflow their character cells.
4801 for (j
= 0; j
< term
->cols
; j
++) {
4802 if (term
->disptext
[i
]->chars
[j
].attr
& DATTR_STARTRUN
) {
4807 if (term
->disptext
[i
]->chars
[j
].chr
!= newline
[j
].chr
||
4808 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
)
4809 != newline
[j
].attr
) {
4812 for (k
= laststart
; k
< j
; k
++)
4813 term
->disptext
[i
]->chars
[k
].attr
|= ATTR_INVALID
;
4819 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
4823 * Finally, loop once more and actually do the drawing.
4825 dirty_run
= dirty_line
= (ldata
->lattr
!=
4826 term
->disptext
[i
]->lattr
);
4827 term
->disptext
[i
]->lattr
= ldata
->lattr
;
4829 for (j
= 0; j
< term
->cols
; j
++) {
4830 unsigned long tattr
, tchar
;
4831 int break_run
, do_copy
;
4832 termchar
*d
= lchars
+ j
;
4834 tattr
= newline
[j
].attr
;
4835 tchar
= newline
[j
].chr
;
4837 if ((term
->disptext
[i
]->chars
[j
].attr
^ tattr
) & ATTR_WIDE
)
4840 break_run
= ((tattr
^ attr
) & term
->attr_mask
) != 0;
4842 /* Special hack for VT100 Linedraw glyphs */
4843 if (tchar
>= 0x23BA && tchar
<= 0x23BD)
4847 * Separate out sequences of characters that have the
4848 * same CSET, if that CSET is a magic one.
4850 if (CSET_OF(tchar
) != cset
)
4854 * Break on both sides of any combined-character cell.
4856 if (d
->cc_next
!= 0 ||
4857 (j
> 0 && d
[-1].cc_next
!= 0))
4860 if (!term
->ucsdata
->dbcs_screenfont
&& !dirty_line
) {
4861 if (term
->disptext
[i
]->chars
[j
].chr
== tchar
&&
4862 (term
->disptext
[i
]->chars
[j
].attr
&~ DATTR_MASK
) == tattr
)
4864 else if (!dirty_run
&& ccount
== 1)
4869 if ((dirty_run
|| last_run_dirty
) && ccount
> 0) {
4870 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
4872 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
4873 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
4881 cset
= CSET_OF(tchar
);
4882 if (term
->ucsdata
->dbcs_screenfont
)
4883 last_run_dirty
= dirty_run
;
4884 dirty_run
= dirty_line
;
4888 if (!termchars_equal_override(&term
->disptext
[i
]->chars
[j
],
4894 if (ccount
>= chlen
) {
4895 chlen
= ccount
+ 256;
4896 ch
= sresize(ch
, chlen
, wchar_t);
4898 ch
[ccount
++] = (wchar_t) tchar
;
4903 while (dd
->cc_next
) {
4904 unsigned long schar
;
4909 switch (schar
& CSET_MASK
) {
4911 schar
= term
->ucsdata
->unitab_line
[schar
& 0xFF];
4914 schar
= term
->ucsdata
->unitab_xterm
[schar
& 0xFF];
4917 schar
= term
->ucsdata
->unitab_scoacs
[schar
&0xFF];
4921 if (ccount
>= chlen
) {
4922 chlen
= ccount
+ 256;
4923 ch
= sresize(ch
, chlen
, wchar_t);
4925 ch
[ccount
++] = (wchar_t) schar
;
4928 attr
|= TATTR_COMBINING
;
4932 copy_termchar(term
->disptext
[i
], j
, d
);
4933 term
->disptext
[i
]->chars
[j
].chr
= tchar
;
4934 term
->disptext
[i
]->chars
[j
].attr
= tattr
;
4936 term
->disptext
[i
]->chars
[j
].attr
|= DATTR_STARTRUN
;
4939 /* If it's a wide char step along to the next one. */
4940 if (tattr
& ATTR_WIDE
) {
4941 if (++j
< term
->cols
) {
4944 * By construction above, the cursor should not
4945 * be on the right-hand half of this character.
4948 assert(!(i
== our_curs_y
&& j
== our_curs_x
));
4949 if (!termchars_equal(&term
->disptext
[i
]->chars
[j
], d
))
4951 copy_termchar(term
->disptext
[i
], j
, d
);
4955 if (dirty_run
&& ccount
> 0) {
4956 do_text(ctx
, start
, i
, ch
, ccount
, attr
,
4958 if (attr
& (TATTR_ACTCURS
| TATTR_PASCURS
))
4959 do_cursor(ctx
, start
, i
, ch
, ccount
, attr
,
4973 * Invalidate the whole screen so it will be repainted in full.
4975 void term_invalidate(Terminal
*term
)
4979 for (i
= 0; i
< term
->rows
; i
++)
4980 for (j
= 0; j
< term
->cols
; j
++)
4981 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
4983 term_schedule_update(term
);
4987 * Paint the window in response to a WM_PAINT message.
4989 void term_paint(Terminal
*term
, Context ctx
,
4990 int left
, int top
, int right
, int bottom
, int immediately
)
4993 if (left
< 0) left
= 0;
4994 if (top
< 0) top
= 0;
4995 if (right
>= term
->cols
) right
= term
->cols
-1;
4996 if (bottom
>= term
->rows
) bottom
= term
->rows
-1;
4998 for (i
= top
; i
<= bottom
&& i
< term
->rows
; i
++) {
4999 if ((term
->disptext
[i
]->lattr
& LATTR_MODE
) == LATTR_NORM
)
5000 for (j
= left
; j
<= right
&& j
< term
->cols
; j
++)
5001 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5003 for (j
= left
/ 2; j
<= right
/ 2 + 1 && j
< term
->cols
; j
++)
5004 term
->disptext
[i
]->chars
[j
].attr
|= ATTR_INVALID
;
5008 do_paint (term
, ctx
, FALSE
);
5010 term_schedule_update(term
);
5015 * Attempt to scroll the scrollback. The second parameter gives the
5016 * position we want to scroll to; the first is +1 to denote that
5017 * this position is relative to the beginning of the scrollback, -1
5018 * to denote it is relative to the end, and 0 to denote that it is
5019 * relative to the current position.
5021 void term_scroll(Terminal
*term
, int rel
, int where
)
5023 int sbtop
= -sblines(term
);
5024 #ifdef OPTIMISE_SCROLL
5025 int olddisptop
= term
->disptop
;
5027 #endif /* OPTIMISE_SCROLL */
5029 term
->disptop
= (rel
< 0 ?
0 : rel
> 0 ? sbtop
: term
->disptop
) + where
;
5030 if (term
->disptop
< sbtop
)
5031 term
->disptop
= sbtop
;
5032 if (term
->disptop
> 0)
5035 #ifdef OPTIMISE_SCROLL
5036 shift
= (term
->disptop
- olddisptop
);
5037 if (shift
< term
->rows
&& shift
> -term
->rows
)
5038 scroll_display(term
, 0, term
->rows
- 1, shift
);
5039 #endif /* OPTIMISE_SCROLL */
5044 * Helper routine for clipme(): growing buffer.
5047 int buflen
; /* amount of allocated space in textbuf/attrbuf */
5048 int bufpos
; /* amount of actual data */
5049 wchar_t *textbuf
; /* buffer for copied text */
5050 wchar_t *textptr
; /* = textbuf + bufpos (current insertion point) */
5051 int *attrbuf
; /* buffer for copied attributes */
5052 int *attrptr
; /* = attrbuf + bufpos */
5055 static void clip_addchar(clip_workbuf
*b
, wchar_t chr
, int attr
)
5057 if (b
->bufpos
>= b
->buflen
) {
5059 b
->textbuf
= sresize(b
->textbuf
, b
->buflen
, wchar_t);
5060 b
->textptr
= b
->textbuf
+ b
->bufpos
;
5061 b
->attrbuf
= sresize(b
->attrbuf
, b
->buflen
, int);
5062 b
->attrptr
= b
->attrbuf
+ b
->bufpos
;
5064 *b
->textptr
++ = chr
;
5065 *b
->attrptr
++ = attr
;
5069 static void clipme(Terminal
*term
, pos top
, pos bottom
, int rect
, int desel
)
5077 buf
.textptr
= buf
.textbuf
= snewn(buf
.buflen
, wchar_t);
5078 buf
.attrptr
= buf
.attrbuf
= snewn(buf
.buflen
, int);
5080 old_top_x
= top
.x
; /* needed for rect==1 */
5082 while (poslt(top
, bottom
)) {
5084 termline
*ldata
= lineptr(top
.y
);
5088 * nlpos will point at the maximum position on this line we
5089 * should copy up to. So we start it at the end of the
5093 nlpos
.x
= term
->cols
;
5096 * ... move it backwards if there's unused space at the end
5097 * of the line (and also set `nl' if this is the case,
5098 * because in normal selection mode this means we need a
5099 * newline at the end)...
5101 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5103 IS_SPACE_CHR(ldata
->chars
[nlpos
.x
- 1].chr
) &&
5104 !ldata
->chars
[nlpos
.x
- 1].cc_next
&&
5107 if (poslt(nlpos
, bottom
))
5109 } else if (ldata
->lattr
& LATTR_WRAPPED2
) {
5110 /* Ignore the last char on the line in a WRAPPED2 line. */
5115 * ... and then clip it to the terminal x coordinate if
5116 * we're doing rectangular selection. (In this case we
5117 * still did the above, so that copying e.g. the right-hand
5118 * column from a table doesn't fill with spaces on the
5122 if (nlpos
.x
> bottom
.x
)
5124 nl
= (top
.y
< bottom
.y
);
5127 while (poslt(top
, bottom
) && poslt(top
, nlpos
)) {
5130 sprintf(cbuf
, "<U+%04x>", (ldata
[top
.x
] & 0xFFFF));
5132 wchar_t cbuf
[16], *p
;
5136 if (ldata
->chars
[x
].chr
== UCSWIDE
) {
5142 int uc
= ldata
->chars
[x
].chr
;
5143 attr
= ldata
->chars
[x
].attr
;
5145 switch (uc
& CSET_MASK
) {
5147 if (!term
->cfg
.rawcnp
) {
5148 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5152 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5155 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5158 switch (uc
& CSET_MASK
) {
5160 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5163 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5167 set
= (uc
& CSET_MASK
);
5168 c
= (uc
& ~CSET_MASK
);
5172 if (DIRECT_FONT(uc
)) {
5173 if (c
>= ' ' && c
!= 0x7F) {
5177 if (is_dbcs_leadbyte(term
->ucsdata
->font_codepage
, (BYTE
) c
)) {
5179 buf
[1] = (char) (0xFF & ldata
->chars
[top
.x
+ 1].chr
);
5180 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 2, wbuf
, 4);
5184 rv
= mb_to_wc(term
->ucsdata
->font_codepage
, 0, buf
, 1, wbuf
, 4);
5188 memcpy(cbuf
, wbuf
, rv
* sizeof(wchar_t));
5195 for (p
= cbuf
; *p
; p
++)
5196 clip_addchar(&buf
, *p
, attr
);
5198 if (ldata
->chars
[x
].cc_next
)
5199 x
+= ldata
->chars
[x
].cc_next
;
5207 for (i
= 0; i
< sel_nl_sz
; i
++)
5208 clip_addchar(&buf
, sel_nl
[i
], 0);
5211 top
.x
= rect ? old_top_x
: 0;
5215 #if SELECTION_NUL_TERMINATED
5216 clip_addchar(&buf
, 0, 0);
5218 /* Finally, transfer all that to the clipboard. */
5219 write_clip(term
->frontend
, buf
.textbuf
, buf
.attrbuf
, buf
.bufpos
, desel
);
5224 void term_copyall(Terminal
*term
)
5228 tree234
*screen
= term
->screen
;
5229 top
.y
= -sblines(term
);
5231 bottom
.y
= find_last_nonempty_line(term
, screen
);
5232 bottom
.x
= term
->cols
;
5233 clipme(term
, top
, bottom
, 0, TRUE
);
5237 * The wordness array is mainly for deciding the disposition of the
5238 * US-ASCII characters.
5240 static int wordtype(Terminal
*term
, int uc
)
5243 int start
, end
, ctype
;
5245 static const struct ucsword ucs_words
[] = {
5251 0x037e, 0x037e, 1}, /* Greek question mark */
5253 0x0387, 0x0387, 1}, /* Greek ano teleia */
5255 0x055a, 0x055f, 1}, /* Armenian punctuation */
5257 0x0589, 0x0589, 1}, /* Armenian full stop */
5259 0x0700, 0x070d, 1}, /* Syriac punctuation */
5261 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5263 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5265 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5267 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5269 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5271 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5273 0x2000, 0x200a, 0}, /* Various spaces */
5275 0x2070, 0x207f, 2}, /* superscript */
5277 0x2080, 0x208f, 2}, /* subscript */
5279 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5281 0x3000, 0x3000, 0}, /* ideographic space */
5283 0x3001, 0x3020, 1}, /* ideographic punctuation */
5285 0x303f, 0x309f, 3}, /* Hiragana */
5287 0x30a0, 0x30ff, 3}, /* Katakana */
5289 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5291 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5293 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5295 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5297 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5299 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5301 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5303 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5305 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5309 const struct ucsword
*wptr
;
5311 switch (uc
& CSET_MASK
) {
5313 uc
= term
->ucsdata
->unitab_xterm
[uc
& 0xFF];
5316 uc
= term
->ucsdata
->unitab_line
[uc
& 0xFF];
5319 uc
= term
->ucsdata
->unitab_scoacs
[uc
&0xFF];
5322 switch (uc
& CSET_MASK
) {
5324 uc
= term
->ucsdata
->unitab_font
[uc
& 0xFF];
5327 uc
= term
->ucsdata
->unitab_oemcp
[uc
& 0xFF];
5331 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5332 * fail as there's such a thing as a double width space. :-(
5334 if (term
->ucsdata
->dbcs_screenfont
&&
5335 term
->ucsdata
->font_codepage
== term
->ucsdata
->line_codepage
)
5339 return term
->wordness
[uc
];
5341 for (wptr
= ucs_words
; wptr
->start
; wptr
++) {
5342 if (uc
>= wptr
->start
&& uc
<= wptr
->end
)
5350 * Spread the selection outwards according to the selection mode.
5352 static pos
sel_spread_half(Terminal
*term
, pos p
, int dir
)
5356 int topy
= -sblines(term
);
5358 ldata
= lineptr(p
.y
);
5360 switch (term
->selmode
) {
5363 * In this mode, every character is a separate unit, except
5364 * for runs of spaces at the end of a non-wrapping line.
5366 if (!(ldata
->lattr
& LATTR_WRAPPED
)) {
5367 termchar
*q
= ldata
->chars
+ term
->cols
;
5368 while (q
> ldata
->chars
&&
5369 IS_SPACE_CHR(q
[-1].chr
) && !q
[-1].cc_next
)
5371 if (q
== ldata
->chars
+ term
->cols
)
5373 if (p
.x
>= q
- ldata
->chars
)
5374 p
.x
= (dir
== -1 ? q
- ldata
->chars
: term
->cols
- 1);
5379 * In this mode, the units are maximal runs of characters
5380 * whose `wordness' has the same value.
5382 wvalue
= wordtype(term
, UCSGET(ldata
->chars
, p
.x
));
5385 int maxcols
= (ldata
->lattr
& LATTR_WRAPPED2 ?
5386 term
->cols
-1 : term
->cols
);
5387 if (p
.x
< maxcols
-1) {
5388 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
+1)) == wvalue
)
5393 if (ldata
->lattr
& LATTR_WRAPPED
) {
5395 ldata2
= lineptr(p
.y
+1);
5396 if (wordtype(term
, UCSGET(ldata2
->chars
, 0))
5413 if (wordtype(term
, UCSGET(ldata
->chars
, p
.x
-1)) == wvalue
)
5422 ldata2
= lineptr(p
.y
-1);
5423 maxcols
= (ldata2
->lattr
& LATTR_WRAPPED2 ?
5424 term
->cols
-1 : term
->cols
);
5425 if (ldata2
->lattr
& LATTR_WRAPPED
) {
5426 if (wordtype(term
, UCSGET(ldata2
->chars
, maxcols
-1))
5444 * In this mode, every line is a unit.
5446 p
.x
= (dir
== -1 ?
0 : term
->cols
- 1);
5454 static void sel_spread(Terminal
*term
)
5456 if (term
->seltype
== LEXICOGRAPHIC
) {
5457 term
->selstart
= sel_spread_half(term
, term
->selstart
, -1);
5458 decpos(term
->selend
);
5459 term
->selend
= sel_spread_half(term
, term
->selend
, +1);
5460 incpos(term
->selend
);
5464 void term_do_paste(Terminal
*term
)
5469 get_clip(term
->frontend
, &data
, &len
);
5470 if (data
&& len
> 0) {
5473 term_seen_key_event(term
); /* pasted data counts */
5475 if (term
->paste_buffer
)
5476 sfree(term
->paste_buffer
);
5477 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5478 term
->paste_buffer
= snewn(len
, wchar_t);
5481 while (p
< data
+ len
) {
5482 while (p
< data
+ len
&&
5483 !(p
<= data
+ len
- sel_nl_sz
&&
5484 !memcmp(p
, sel_nl
, sizeof(sel_nl
))))
5489 for (i
= 0; i
< p
- q
; i
++) {
5490 term
->paste_buffer
[term
->paste_len
++] = q
[i
];
5494 if (p
<= data
+ len
- sel_nl_sz
&&
5495 !memcmp(p
, sel_nl
, sizeof(sel_nl
))) {
5496 term
->paste_buffer
[term
->paste_len
++] = '\015';
5502 /* Assume a small paste will be OK in one go. */
5503 if (term
->paste_len
< 256) {
5505 luni_send(term
->ldisc
, term
->paste_buffer
, term
->paste_len
, 0);
5506 if (term
->paste_buffer
)
5507 sfree(term
->paste_buffer
);
5508 term
->paste_buffer
= 0;
5509 term
->paste_pos
= term
->paste_hold
= term
->paste_len
= 0;
5512 get_clip(term
->frontend
, NULL
, NULL
);
5515 void term_mouse(Terminal
*term
, Mouse_Button braw
, Mouse_Button bcooked
,
5516 Mouse_Action a
, int x
, int y
, int shift
, int ctrl
, int alt
)
5520 int raw_mouse
= (term
->xterm_mouse
&&
5521 !term
->cfg
.no_mouse_rep
&&
5522 !(term
->cfg
.mouse_override
&& shift
));
5523 int default_seltype
;
5527 if (a
== MA_DRAG
&& !raw_mouse
)
5528 term_scroll(term
, 0, -1);
5530 if (y
>= term
->rows
) {
5532 if (a
== MA_DRAG
&& !raw_mouse
)
5533 term_scroll(term
, 0, +1);
5542 if (x
>= term
->cols
)
5545 selpoint
.y
= y
+ term
->disptop
;
5546 ldata
= lineptr(selpoint
.y
);
5548 if ((ldata
->lattr
& LATTR_MODE
) != LATTR_NORM
)
5552 * Transform x through the bidi algorithm to find the _logical_
5553 * click point from the physical one.
5555 if (term_bidi_line(term
, ldata
, y
) != NULL
) {
5556 x
= term
->post_bidi_cache
[y
].backward
[x
];
5563 int encstate
= 0, r
, c
;
5570 encstate
= 0x20; /* left button down */
5581 case MBT_WHEEL_DOWN
:
5584 default: break; /* placate gcc warning about enum use */
5588 if (term
->xterm_mouse
== 1)
5594 term
->mouse_is_down
= 0;
5597 if (term
->mouse_is_down
== braw
)
5599 term
->mouse_is_down
= braw
;
5601 default: break; /* placate gcc warning about enum use */
5610 sprintf(abuf
, "\033[M%c%c%c", encstate
, c
, r
);
5611 ldisc_send(term
->ldisc
, abuf
, 6, 0);
5617 * Set the selection type (rectangular or normal) at the start
5618 * of a selection attempt, from the state of Alt.
5620 if (!alt
^ !term
->cfg
.rect_select
)
5621 default_seltype
= RECTANGULAR
;
5623 default_seltype
= LEXICOGRAPHIC
;
5625 if (term
->selstate
== NO_SELECTION
) {
5626 term
->seltype
= default_seltype
;
5629 if (bcooked
== MBT_SELECT
&& a
== MA_CLICK
) {
5631 term
->selstate
= ABOUT_TO
;
5632 term
->seltype
= default_seltype
;
5633 term
->selanchor
= selpoint
;
5634 term
->selmode
= SM_CHAR
;
5635 } else if (bcooked
== MBT_SELECT
&& (a
== MA_2CLK
|| a
== MA_3CLK
)) {
5637 term
->selmode
= (a
== MA_2CLK ? SM_WORD
: SM_LINE
);
5638 term
->selstate
= DRAGGING
;
5639 term
->selstart
= term
->selanchor
= selpoint
;
5640 term
->selend
= term
->selstart
;
5641 incpos(term
->selend
);
5643 } else if ((bcooked
== MBT_SELECT
&& a
== MA_DRAG
) ||
5644 (bcooked
== MBT_EXTEND
&& a
!= MA_RELEASE
)) {
5645 if (term
->selstate
== ABOUT_TO
&& poseq(term
->selanchor
, selpoint
))
5647 if (bcooked
== MBT_EXTEND
&& a
!= MA_DRAG
&&
5648 term
->selstate
== SELECTED
) {
5649 if (term
->seltype
== LEXICOGRAPHIC
) {
5651 * For normal selection, we extend by moving
5652 * whichever end of the current selection is closer
5655 if (posdiff(selpoint
, term
->selstart
) <
5656 posdiff(term
->selend
, term
->selstart
) / 2) {
5657 term
->selanchor
= term
->selend
;
5658 decpos(term
->selanchor
);
5660 term
->selanchor
= term
->selstart
;
5664 * For rectangular selection, we have a choice of
5665 * _four_ places to put selanchor and selpoint: the
5666 * four corners of the selection.
5668 if (2*selpoint
.x
< term
->selstart
.x
+ term
->selend
.x
)
5669 term
->selanchor
.x
= term
->selend
.x
-1;
5671 term
->selanchor
.x
= term
->selstart
.x
;
5673 if (2*selpoint
.y
< term
->selstart
.y
+ term
->selend
.y
)
5674 term
->selanchor
.y
= term
->selend
.y
;
5676 term
->selanchor
.y
= term
->selstart
.y
;
5678 term
->selstate
= DRAGGING
;
5680 if (term
->selstate
!= ABOUT_TO
&& term
->selstate
!= DRAGGING
)
5681 term
->selanchor
= selpoint
;
5682 term
->selstate
= DRAGGING
;
5683 if (term
->seltype
== LEXICOGRAPHIC
) {
5685 * For normal selection, we set (selstart,selend) to
5686 * (selpoint,selanchor) in some order.
5688 if (poslt(selpoint
, term
->selanchor
)) {
5689 term
->selstart
= selpoint
;
5690 term
->selend
= term
->selanchor
;
5691 incpos(term
->selend
);
5693 term
->selstart
= term
->selanchor
;
5694 term
->selend
= selpoint
;
5695 incpos(term
->selend
);
5699 * For rectangular selection, we may need to
5700 * interchange x and y coordinates (if the user has
5701 * dragged in the -x and +y directions, or vice versa).
5703 term
->selstart
.x
= min(term
->selanchor
.x
, selpoint
.x
);
5704 term
->selend
.x
= 1+max(term
->selanchor
.x
, selpoint
.x
);
5705 term
->selstart
.y
= min(term
->selanchor
.y
, selpoint
.y
);
5706 term
->selend
.y
= max(term
->selanchor
.y
, selpoint
.y
);
5709 } else if ((bcooked
== MBT_SELECT
|| bcooked
== MBT_EXTEND
) &&
5711 if (term
->selstate
== DRAGGING
) {
5713 * We've completed a selection. We now transfer the
5714 * data to the clipboard.
5716 clipme(term
, term
->selstart
, term
->selend
,
5717 (term
->seltype
== RECTANGULAR
), FALSE
);
5718 term
->selstate
= SELECTED
;
5720 term
->selstate
= NO_SELECTION
;
5721 } else if (bcooked
== MBT_PASTE
5723 #if MULTICLICK_ONLY_EVENT
5724 || a
== MA_2CLK
|| a
== MA_3CLK
5727 request_paste(term
->frontend
);
5733 void term_key(Terminal
*term
, Key_Sym keysym
, wchar_t *text
, size_t tlen
,
5734 unsigned int modifiers
, unsigned int flags
)
5738 int prependesc
= FALSE
;
5742 fprintf(stderr
, "keysym = %d, %d chars:", keysym
, tlen
);
5743 for (i
= 0; i
< tlen
; i
++)
5744 fprintf(stderr
, " %04x", (unsigned)text
[i
]);
5745 fprintf(stderr
, "\n");
5749 if ((flags
& PKF_REPEAT
) && term
->repeat_off
)
5752 /* Currently, Meta always just prefixes everything with ESC. */
5753 if (modifiers
& PKM_META
)
5755 modifiers
&= ~PKM_META
;
5758 * Alt is only used for Alt+keypad, which isn't supported yet, so
5761 modifiers
&= ~PKM_ALT
;
5763 /* Standard local function keys */
5764 switch (modifiers
& (PKM_SHIFT
| PKM_CONTROL
)) {
5766 if (keysym
== PK_PAGEUP
)
5767 /* scroll up one page */;
5768 if (keysym
== PK_PAGEDOWN
)
5769 /* scroll down on page */;
5770 if (keysym
== PK_INSERT
)
5771 term_do_paste(term
);
5774 if (keysym
== PK_PAGEUP
)
5775 /* scroll up one line */;
5776 if (keysym
== PK_PAGEDOWN
)
5777 /* scroll down one line */;
5778 /* Control-Numlock for app-keypad mode switch */
5779 if (keysym
== PK_PF1
)
5780 term
->app_keypad_keys
^= 1;
5784 if (modifiers
& PKM_ALT
) {
5785 /* Alt+F4 (close) */
5786 /* Alt+Return (full screen) */
5787 /* Alt+Space (system menu) */
5790 if (keysym
== PK_NULL
&& (modifiers
& PKM_CONTROL
) && tlen
== 1 &&
5791 text
[0] >= 0x20 && text
[0] <= 0x7e) {
5792 /* ASCII chars + Control */
5793 if ((text
[0] >= 0x40 && text
[0] <= 0x5f) ||
5794 (text
[0] >= 0x61 && text
[0] <= 0x7a))
5798 * Control-2 should return ^@ (0x00), Control-6 should return
5799 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5800 * the DOS keyboard handling did it, and we have nothing better
5801 * to do with the key combo in question, we'll also map
5802 * Control-Backquote to ^\ (0x1C).
5805 case ' ': text
[0] = 0x00; break;
5806 case '-': text
[0] = 0x1f; break;
5807 case '/': text
[0] = 0x1f; break;
5808 case '2': text
[0] = 0x00; break;
5809 case '3': text
[0] = 0x1b; break;
5810 case '4': text
[0] = 0x1c; break;
5811 case '5': text
[0] = 0x1d; break;
5812 case '6': text
[0] = 0x1e; break;
5813 case '7': text
[0] = 0x1f; break;
5814 case '8': text
[0] = 0x7f; break;
5815 case '`': text
[0] = 0x1c; break;
5820 /* Nethack keypad */
5821 if (term
->cfg
.nethack_keypad
) {
5824 case PK_KP1
: c
= 'b'; break;
5825 case PK_KP2
: c
= 'j'; break;
5826 case PK_KP3
: c
= 'n'; break;
5827 case PK_KP4
: c
= 'h'; break;
5828 case PK_KP5
: c
= '.'; break;
5829 case PK_KP6
: c
= 'l'; break;
5830 case PK_KP7
: c
= 'y'; break;
5831 case PK_KP8
: c
= 'k'; break;
5832 case PK_KP9
: c
= 'u'; break;
5833 default: break; /* else gcc warns `enum value not used' */
5837 if (modifiers
& PKM_CONTROL
)
5839 else if (modifiers
& PKM_SHIFT
)
5847 /* Numeric Keypad */
5848 if (PK_ISKEYPAD(keysym
)) {
5852 * In VT400 mode, PFn always emits an escape sequence. In
5853 * Linux and tilde modes, this only happens in app keypad mode.
5855 if (term
->cfg
.funky_type
== FUNKY_VT400
||
5856 ((term
->cfg
.funky_type
== FUNKY_LINUX
||
5857 term
->cfg
.funky_type
== FUNKY_TILDE
) &&
5858 term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
)) {
5860 case PK_PF1
: xkey
= 'P'; break;
5861 case PK_PF2
: xkey
= 'Q'; break;
5862 case PK_PF3
: xkey
= 'R'; break;
5863 case PK_PF4
: xkey
= 'S'; break;
5864 default: break; /* else gcc warns `enum value not used' */
5867 if (term
->app_keypad_keys
&& !term
->cfg
.no_applic_k
) {
5869 case PK_KP0
: xkey
= 'p'; break;
5870 case PK_KP1
: xkey
= 'q'; break;
5871 case PK_KP2
: xkey
= 'r'; break;
5872 case PK_KP3
: xkey
= 's'; break;
5873 case PK_KP4
: xkey
= 't'; break;
5874 case PK_KP5
: xkey
= 'u'; break;
5875 case PK_KP6
: xkey
= 'v'; break;
5876 case PK_KP7
: xkey
= 'w'; break;
5877 case PK_KP8
: xkey
= 'x'; break;
5878 case PK_KP9
: xkey
= 'y'; break;
5879 case PK_KPDECIMAL
: xkey
= 'n'; break;
5880 case PK_KPENTER
: xkey
= 'M'; break;
5881 default: break; /* else gcc warns `enum value not used' */
5883 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& tlen
> 0) {
5885 * xterm can't see the layout of the keypad, so it has
5886 * to rely on the X keysyms returned by the keys.
5887 * Hence, we look at the strings here, not the PuTTY
5888 * keysyms (which describe the layout).
5892 if (modifiers
& PKM_SHIFT
)
5897 case '/': xkey
= 'o'; break;
5898 case '*': xkey
= 'j'; break;
5899 case '-': xkey
= 'm'; break;
5903 * In all other modes, we try to retain the layout of
5904 * the DEC keypad in application mode.
5908 /* This key covers the '-' and ',' keys on a VT220 */
5909 if (modifiers
& PKM_SHIFT
)
5910 xkey
= 'm'; /* VT220 '-' */
5912 xkey
= 'l'; /* VT220 ',' */
5914 case PK_KPMINUS
: xkey
= 'm'; break;
5915 case PK_KPCOMMA
: xkey
= 'l'; break;
5916 default: break; /* else gcc warns `enum value not used' */
5921 if (term
->vt52_mode
) {
5922 if (xkey
>= 'P' && xkey
<= 'S')
5923 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
5925 p
+= sprintf((char *) p
, "\x1B?%c", xkey
);
5927 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
5930 /* Not in application mode -- treat the number pad as arrow keys? */
5931 if ((flags
& PKF_NUMLOCK
) == 0) {
5933 case PK_KP0
: keysym
= PK_INSERT
; break;
5934 case PK_KP1
: keysym
= PK_END
; break;
5935 case PK_KP2
: keysym
= PK_DOWN
; break;
5936 case PK_KP3
: keysym
= PK_PAGEDOWN
; break;
5937 case PK_KP4
: keysym
= PK_LEFT
; break;
5938 case PK_KP5
: keysym
= PK_REST
; break;
5939 case PK_KP6
: keysym
= PK_RIGHT
; break;
5940 case PK_KP7
: keysym
= PK_HOME
; break;
5941 case PK_KP8
: keysym
= PK_UP
; break;
5942 case PK_KP9
: keysym
= PK_PAGEUP
; break;
5943 default: break; /* else gcc warns `enum value not used' */
5948 /* Miscellaneous keys */
5955 *p
++ = (term
->cfg
.bksp_is_delete ?
0x7F : 0x08);
5956 else if (modifiers
== PKM_SHIFT
)
5957 /* We do the opposite of what is configured */
5958 *p
++ = (term
->cfg
.bksp_is_delete ?
0x08 : 0x7F);
5964 else if (modifiers
== PKM_SHIFT
)
5965 *p
++ = 0x1B, *p
++ = '[', *p
++ = 'Z';
5968 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5970 if (modifiers
== PKM_CONTROL
)
5975 case PK_KPENTER
: /* Odd keypad modes handled above */
5976 if (modifiers
== 0) {
5978 if (term
->cr_lf_return
)
5982 default: break; /* else gcc warns `enum value not used' */
5985 /* SCO function keys and editing keys */
5986 if (term
->cfg
.funky_type
== FUNKY_SCO
) {
5987 if (PK_ISFKEY(keysym
) && keysym
<= PK_F12
) {
5988 static char const codes
[] =
5989 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5990 int index
= keysym
- PK_F1
;
5992 if (modifiers
& PKM_SHIFT
) index
+= 12;
5993 if (modifiers
& PKM_CONTROL
) index
+= 24;
5994 p
+= sprintf((char *) p
, "\x1B[%c", codes
[index
]);
5997 if (PK_ISEDITING(keysym
)) {
6001 case PK_DELETE
: *p
++ = 0x7f; goto done
;
6002 case PK_HOME
: xkey
= 'H'; break;
6003 case PK_INSERT
: xkey
= 'L'; break;
6004 case PK_END
: xkey
= 'F'; break;
6005 case PK_PAGEUP
: xkey
= 'I'; break;
6006 case PK_PAGEDOWN
: xkey
= 'G'; break;
6007 default: break; /* else gcc warns `enum value not used' */
6009 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6013 if (PK_ISEDITING(keysym
) && (modifiers
& PKM_SHIFT
) == 0) {
6016 if (term
->cfg
.funky_type
== FUNKY_XTERM
) {
6017 /* Xterm shuffles these keys, apparently. */
6019 case PK_HOME
: keysym
= PK_INSERT
; break;
6020 case PK_INSERT
: keysym
= PK_HOME
; break;
6021 case PK_DELETE
: keysym
= PK_END
; break;
6022 case PK_END
: keysym
= PK_PAGEUP
; break;
6023 case PK_PAGEUP
: keysym
= PK_DELETE
; break;
6024 case PK_PAGEDOWN
: keysym
= PK_PAGEDOWN
; break;
6025 default: break; /* else gcc warns `enum value not used' */
6030 if (term
->cfg
.rxvt_homeend
&&
6031 (keysym
== PK_HOME
|| keysym
== PK_END
)) {
6032 p
+= sprintf((char *) p
, keysym
== PK_HOME ?
"\x1B[H" : "\x1BOw");
6036 if (term
->vt52_mode
) {
6040 * A real VT52 doesn't have these, and a VT220 doesn't
6041 * send anything for them in VT52 mode.
6044 case PK_HOME
: xkey
= 'H'; break;
6045 case PK_INSERT
: xkey
= 'L'; break;
6046 case PK_DELETE
: xkey
= 'M'; break;
6047 case PK_END
: xkey
= 'E'; break;
6048 case PK_PAGEUP
: xkey
= 'I'; break;
6049 case PK_PAGEDOWN
: xkey
= 'G'; break;
6050 default: xkey
=0; break; /* else gcc warns `enum value not used'*/
6052 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6057 case PK_HOME
: code
= 1; break;
6058 case PK_INSERT
: code
= 2; break;
6059 case PK_DELETE
: code
= 3; break;
6060 case PK_END
: code
= 4; break;
6061 case PK_PAGEUP
: code
= 5; break;
6062 case PK_PAGEDOWN
: code
= 6; break;
6063 default: code
= 0; break; /* else gcc warns `enum value not used' */
6065 p
+= sprintf((char *) p
, "\x1B[%d~", code
);
6069 if (PK_ISFKEY(keysym
)) {
6070 /* Map Shift+F1-F10 to F11-F20 */
6071 if (keysym
>= PK_F1
&& keysym
<= PK_F10
&& (modifiers
& PKM_SHIFT
))
6073 if ((term
->vt52_mode
|| term
->cfg
.funky_type
== FUNKY_VT100P
) &&
6075 /* XXX This overrides the XTERM/VT52 mode below */
6077 if (keysym
>= PK_F6
) offt
++;
6078 if (keysym
>= PK_F12
) offt
++;
6079 p
+= sprintf((char *) p
, term
->vt52_mode ?
"\x1B%c" : "\x1BO%c",
6080 'P' + keysym
- PK_F1
- offt
);
6083 if (term
->cfg
.funky_type
== FUNKY_LINUX
&& keysym
<= PK_F5
) {
6084 p
+= sprintf((char *) p
, "\x1B[[%c", 'A' + keysym
- PK_F1
);
6087 if (term
->cfg
.funky_type
== FUNKY_XTERM
&& keysym
<= PK_F4
) {
6088 if (term
->vt52_mode
)
6089 p
+= sprintf((char *) p
, "\x1B%c", 'P' + keysym
- PK_F1
);
6091 p
+= sprintf((char *) p
, "\x1BO%c", 'P' + keysym
- PK_F1
);
6094 p
+= sprintf((char *) p
, "\x1B[%d~", 11 + keysym
- PK_F1
);
6098 if (PK_ISCURSOR(keysym
)) {
6102 case PK_UP
: xkey
= 'A'; break;
6103 case PK_DOWN
: xkey
= 'B'; break;
6104 case PK_RIGHT
: xkey
= 'C'; break;
6105 case PK_LEFT
: xkey
= 'D'; break;
6106 case PK_REST
: xkey
= 'G'; break; /* centre key on number pad */
6107 default: xkey
= 0; break; /* else gcc warns `enum value not used' */
6109 if (term
->vt52_mode
)
6110 p
+= sprintf((char *) p
, "\x1B%c", xkey
);
6112 int app_flg
= (term
->app_cursor_keys
&& !term
->cfg
.no_applic_c
);
6114 /* Useful mapping of Ctrl-arrows */
6115 if (modifiers
== PKM_CONTROL
)
6119 p
+= sprintf((char *) p
, "\x1BO%c", xkey
);
6121 p
+= sprintf((char *) p
, "\x1B[%c", xkey
);
6127 if (p
> output
|| tlen
> 0) {
6129 * Interrupt an ongoing paste. I'm not sure
6130 * this is sensible, but for the moment it's
6131 * preferable to having to faff about buffering
6137 * We need not bother about stdin backlogs
6138 * here, because in GUI PuTTY we can't do
6139 * anything about it anyway; there's no means
6140 * of asking Windows to hold off on KEYDOWN
6141 * messages. We _have_ to buffer everything
6144 term_seen_key_event(term
);
6148 fprintf(stderr
, "sending ESC\n");
6150 ldisc_send(term
->ldisc
, "\x1b", 1, 1);
6155 fprintf(stderr
, "sending %d bytes:", p
- output
);
6156 for (i
= 0; i
< p
- output
; i
++)
6157 fprintf(stderr
, " %02x", output
[i
]);
6158 fprintf(stderr
, "\n");
6160 ldisc_send(term
->ldisc
, output
, p
- output
, 1);
6161 } else if (tlen
> 0) {
6163 fprintf(stderr
, "sending %d unichars:", tlen
);
6164 for (i
= 0; i
< tlen
; i
++)
6165 fprintf(stderr
, " %04x", (unsigned) text
[i
]);
6166 fprintf(stderr
, "\n");
6168 luni_send(term
->ldisc
, text
, tlen
, 1);
6173 void term_nopaste(Terminal
*term
)
6175 if (term
->paste_len
== 0)
6177 sfree(term
->paste_buffer
);
6178 term
->paste_buffer
= NULL
;
6179 term
->paste_len
= 0;
6182 int term_paste_pending(Terminal
*term
)
6184 return term
->paste_len
!= 0;
6187 void term_paste(Terminal
*term
)
6189 long now
, paste_diff
;
6191 if (term
->paste_len
== 0)
6194 /* Don't wait forever to paste */
6195 if (term
->paste_hold
) {
6196 now
= GETTICKCOUNT();
6197 paste_diff
= now
- term
->last_paste
;
6198 if (paste_diff
>= 0 && paste_diff
< 450)
6201 term
->paste_hold
= 0;
6203 while (term
->paste_pos
< term
->paste_len
) {
6205 while (n
+ term
->paste_pos
< term
->paste_len
) {
6206 if (term
->paste_buffer
[term
->paste_pos
+ n
++] == '\015')
6210 luni_send(term
->ldisc
, term
->paste_buffer
+ term
->paste_pos
, n
, 0);
6211 term
->paste_pos
+= n
;
6213 if (term
->paste_pos
< term
->paste_len
) {
6214 term
->paste_hold
= 1;
6218 sfree(term
->paste_buffer
);
6219 term
->paste_buffer
= NULL
;
6220 term
->paste_len
= 0;
6223 static void deselect(Terminal
*term
)
6225 term
->selstate
= NO_SELECTION
;
6226 term
->selstart
.x
= term
->selstart
.y
= term
->selend
.x
= term
->selend
.y
= 0;
6229 void term_deselect(Terminal
*term
)
6235 int term_ldisc(Terminal
*term
, int option
)
6237 if (option
== LD_ECHO
)
6238 return term
->term_echoing
;
6239 if (option
== LD_EDIT
)
6240 return term
->term_editing
;
6244 int term_data(Terminal
*term
, int is_stderr
, const char *data
, int len
)
6246 bufchain_add(&term
->inbuf
, data
, len
);
6248 if (!term
->in_term_out
) {
6249 term
->in_term_out
= TRUE
;
6250 term_reset_cblink(term
);
6252 * During drag-selects, we do not process terminal input,
6253 * because the user will want the screen to hold still to
6256 if (term
->selstate
!= DRAGGING
)
6258 term
->in_term_out
= FALSE
;
6262 * term_out() always completely empties inbuf. Therefore,
6263 * there's no reason at all to return anything other than zero
6264 * from this function, because there _can't_ be a question of
6265 * the remote side needing to wait until term_out() has cleared
6268 * This is a slightly suboptimal way to deal with SSH-2 - in
6269 * principle, the window mechanism would allow us to continue
6270 * to accept data on forwarded ports and X connections even
6271 * while the terminal processing was going slowly - but we
6272 * can't do the 100% right thing without moving the terminal
6273 * processing into a separate thread, and that might hurt
6274 * portability. So we manage stdout buffering the old SSH-1 way:
6275 * if the terminal processing goes slowly, the whole SSH
6276 * connection stops accepting data until it's ready.
6278 * In practice, I can't imagine this causing serious trouble.
6284 * Write untrusted data to the terminal.
6285 * The only control character that should be honoured is \n (which
6286 * will behave as a CRLF).
6288 int term_data_untrusted(Terminal
*term
, const char *data
, int len
)
6291 /* FIXME: more sophisticated checking? */
6292 for (i
= 0; i
< len
; i
++) {
6293 if (data
[i
] == '\n')
6294 term_data(term
, 1, "\r\n", 2);
6295 else if (data
[i
] & 0x60)
6296 term_data(term
, 1, data
+ i
, 1);
6298 return 0; /* assumes that term_data() always returns 0 */
6301 void term_provide_logctx(Terminal
*term
, void *logctx
)
6303 term
->logctx
= logctx
;
6306 void term_set_focus(Terminal
*term
, int has_focus
)
6308 term
->has_focus
= has_focus
;
6309 term_schedule_cblink(term
);
6313 * Provide "auto" settings for remote tty modes, suitable for an
6314 * application with a terminal window.
6316 char *term_get_ttymode(Terminal
*term
, const char *mode
)
6319 if (strcmp(mode
, "ERASE") == 0) {
6320 val
= term
->cfg
.bksp_is_delete ?
"^?" : "^H";
6322 /* FIXME: perhaps we should set ONLCR based on cfg.lfhascr as well? */
6326 struct term_userpass_state
{
6328 int done_prompt
; /* printed out prompt yet? */
6329 size_t pos
; /* cursor position */
6333 * Process some terminal data in the course of username/password
6336 int term_get_userpass_input(Terminal
*term
, prompts_t
*p
,
6337 unsigned char *in
, int inlen
)
6339 struct term_userpass_state
*s
= (struct term_userpass_state
*)p
->data
;
6342 * First call. Set some stuff up.
6344 p
->data
= s
= snew(struct term_userpass_state
);
6347 /* We only print the `name' caption if we have to... */
6348 if (p
->name_reqd
&& p
->name
) {
6349 size_t l
= strlen(p
->name
);
6350 term_data_untrusted(term
, p
->name
, l
);
6351 if (p
->name
[l
-1] != '\n')
6352 term_data_untrusted(term
, "\n", 1);
6354 /* ...but we always print any `instruction'. */
6355 if (p
->instruction
) {
6356 size_t l
= strlen(p
->instruction
);
6357 term_data_untrusted(term
, p
->instruction
, l
);
6358 if (p
->instruction
[l
-1] != '\n')
6359 term_data_untrusted(term
, "\n", 1);
6362 * Zero all the results, in case we abort half-way through.
6366 for (i
= 0; i
< p
->n_prompts
; i
++)
6367 memset(p
->prompts
[i
]->result
, 0, p
->prompts
[i
]->result_len
);
6371 while (s
->curr_prompt
< p
->n_prompts
) {
6373 prompt_t
*pr
= p
->prompts
[s
->curr_prompt
];
6374 int finished_prompt
= 0;
6376 if (!s
->done_prompt
) {
6377 term_data_untrusted(term
, pr
->prompt
, strlen(pr
->prompt
));
6382 /* Breaking out here ensures that the prompt is printed even
6383 * if we're now waiting for user data. */
6384 if (!in
|| !inlen
) break;
6386 /* FIXME: should we be using local-line-editing code instead? */
6387 while (!finished_prompt
&& inlen
) {
6393 term_data(term
, 0, "\r\n", 2);
6394 pr
->result
[s
->pos
] = '\0';
6395 pr
->result
[pr
->result_len
- 1] = '\0';
6396 /* go to next prompt, if any */
6399 finished_prompt
= 1; /* break out */
6405 term_data(term
, 0, "\b \b", 3);
6411 while (s
->pos
> 0) {
6413 term_data(term
, 0, "\b \b", 3);
6419 /* Immediate abort. */
6420 term_data(term
, 0, "\r\n", 2);
6423 return 0; /* user abort */
6426 * This simplistic check for printability is disabled
6427 * when we're doing password input, because some people
6428 * have control characters in their passwords.
6431 (c
>= ' ' && c
<= '~') ||
6432 ((unsigned char) c
>= 160))
6433 && s
->pos
< pr
->result_len
- 1) {
6434 pr
->result
[s
->pos
++] = c
;
6436 term_data(term
, 0, &c
, 1);
6444 if (s
->curr_prompt
< p
->n_prompts
) {
6445 return -1; /* more data required */
6449 return +1; /* all done */