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)
137 * Diagnostic function: verify that a termline has a correct
138 * combining character structure.
140 * XXX-REMOVE-BEFORE-RELEASE: This is a performance-intensive
141 * check. Although it's currently really useful for getting all the
142 * bugs out of the new cc stuff, it will want to be absent when we
143 * make a proper release.
145 static void cc_check(termline *line)
147 unsigned char *flags;
150 assert(line->size >= line->cols);
152 flags = snewn(line->size, unsigned char);
154 for (i = 0; i < line->size; i++)
155 flags[i] = (i < line->cols);
157 for (i = 0; i < line->cols; i++) {
159 while (line->chars[j].cc_next) {
160 j += line->chars[j].cc_next;
161 assert(j >= line->cols && j < line->size);
170 assert(j >= line->cols && j < line->size);
173 if (line->chars[j].cc_next)
174 j += line->chars[j].cc_next;
181 for (i = 0; i < line->size; i++)
182 j += (flags[i] != 0);
184 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;
234 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
238 * Clear the combining character list in a character cell.
240 static void clear_cc(termline *line, int col)
242 int oldfree, origcol = col;
244 assert(col >= 0 && col < line->cols);
246 if (!line->chars[col].cc_next)
247 return; /* nothing needs doing */
249 oldfree = line->cc_free;
250 line->cc_free = col + line->chars[col].cc_next;
251 while (line->chars[col].cc_next)
252 col += line->chars[col].cc_next;
254 line->chars[col].cc_next = oldfree - col;
256 line->chars[col].cc_next = 0;
258 line->chars[origcol].cc_next = 0;
260 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
264 * Compare two character cells for equality. Special case required
265 * in do_paint() where we override what we expect the chr and attr
268 static int termchars_equal_override(termchar *a, termchar *b,
269 unsigned long bchr, unsigned long battr)
274 if (a->attr != battr)
276 while (a->cc_next || b->cc_next) {
277 if (!a->cc_next || !b->cc_next)
278 return FALSE; /* one cc-list ends, other does not */
281 if (a->chr != b->chr)
287 static int termchars_equal(termchar *a, termchar *b)
289 return termchars_equal_override(a, b, b->chr, b->attr);
293 * Copy a character cell. (Requires a pointer to the destination
294 * termline, so as to access its free list.)
296 static void copy_termchar(termline *destline, int x, termchar *src)
298 clear_cc(destline, x);
300 destline->chars[x] = *src; /* copy everything except cc-list */
301 destline->chars[x].cc_next = 0; /* and make sure this is zero */
303 while (src->cc_next) {
305 add_cc(destline, x, src->chr);
308 cc_check(destline); /* XXX-REMOVE-BEFORE-RELEASE */
312 * Move a character cell within its termline.
314 static void move_termchar(termline *line, termchar *dest, termchar *src)
316 /* First clear the cc list from the original char, just in case. */
317 clear_cc(line, dest - line->chars);
319 /* Move the character cell and adjust its cc_next. */
320 *dest = *src; /* copy everything except cc-list */
322 dest->cc_next = src->cc_next - (dest-src);
324 /* Ensure the original cell doesn't have a cc list. */
327 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
331 * Compress and decompress a termline into an RLE-based format for
332 * storing in scrollback. (Since scrollback almost never needs to
333 * be modified and exists in huge quantities, this is a sensible
334 * tradeoff, particularly since it allows us to continue adding
335 * features to the main termchar structure without proportionally
336 * bloating the terminal emulator's memory footprint unless those
337 * features are in constant use.)
343 static void add(struct buf *b, unsigned char c)
345 if (b->len >= b->size) {
346 b->size = (b->len * 3 / 2) + 512;
347 b->data = sresize(b->data, b->size, unsigned char);
349 b->data[b->len++] = c;
351 static int get(struct buf *b)
353 return b->data[b->len++];
355 static void makerle(struct buf *b, termline *ldata,
356 void (*makeliteral)(struct buf *b, termchar *c,
357 unsigned long *state))
359 int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2;
360 termchar *c = ldata->chars;
361 unsigned long state = 0, oldstate;
368 prevlen = prevpos = 0;
373 makeliteral(b, c++, &state);
374 thislen = b->len - thispos;
375 if (thislen == prevlen &&
376 !memcmp(b->data + prevpos, b->data + thispos, thislen)) {
378 * This literal precisely matches the previous one.
379 * Turn it into a run if it's worthwhile.
381 * With one-byte literals, it costs us two bytes to
382 * encode a run, plus another byte to write the header
383 * to resume normal output; so a three-element run is
384 * neutral, and anything beyond that is unconditionally
385 * worthwhile. With two-byte literals or more, even a
388 if (thislen > 1 || prev2) {
392 * It's worth encoding a run. Start at prevpos,
393 * unless hdrsize==0 in which case we can back up
394 * another one and start by overwriting hdrpos.
397 hdrsize--; /* remove the literal at prevpos */
401 prevpos -= prevlen;/* and possibly another one */
405 assert(prevpos == hdrpos + 1);
407 b->len = prevpos+prevlen;
409 memmove(b->data + prevpos+1, b->data + prevpos, prevlen);
411 b->len = prevpos+prevlen+1;
413 * Terminate the previous run of ordinary
416 assert(hdrsize >= 1 && hdrsize <= 128);
417 b->data[hdrpos] = hdrsize - 1;
420 runlen = prev2 ? 3 : 2;
422 while (n > 0 && runlen < 129) {
426 makeliteral(b, c, &state);
427 tmplen = b->len - tmppos;
429 if (tmplen != thislen ||
430 memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) {
432 break; /* run over */
437 assert(runlen >= 2 && runlen <= 129);
438 b->data[runpos] = runlen + 0x80 - 2;
443 /* And ensure this run doesn't interfere with the next. */
444 prevlen = prevpos = 0;
450 * Just flag that the previous two literals were
451 * identical, in case we find a third identical one
452 * we want to turn into a run.
465 * This character isn't (yet) part of a run. Add it to
469 if (hdrsize == 128) {
470 b->data[hdrpos] = hdrsize - 1;
474 prevlen = prevpos = 0;
483 assert(hdrsize <= 128);
484 b->data[hdrpos] = hdrsize - 1;
489 static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state)
492 * My encoding for characters is UTF-8-like, in that it stores
493 * 7-bit ASCII in one byte and uses high-bit-set bytes as
494 * introducers to indicate a longer sequence. However, it's
495 * unlike UTF-8 in that it doesn't need to be able to
496 * resynchronise, and therefore I don't want to waste two bits
497 * per byte on having recognisable continuation characters.
498 * Also I don't want to rule out the possibility that I may one
499 * day use values 0x80000000-0xFFFFFFFF for interesting
500 * purposes, so unlike UTF-8 I need a full 32-bit range.
501 * Accordingly, here is my encoding:
503 * 00000000-0000007F: 0xxxxxxx (but see below)
504 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
505 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
506 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
507 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
509 * (`Z' is like `x' but is always going to be zero since the
510 * values I'm encoding don't go above 2^32. In principle the
511 * five-byte form of the encoding could extend to 2^35, and
512 * there could be six-, seven-, eight- and nine-byte forms as
513 * well to allow up to 64-bit values to be encoded. But that's
514 * completely unnecessary for these purposes!)
516 * The encoding as written above would be very simple, except
517 * that 7-bit ASCII can occur in several different ways in the
518 * terminal data; sometimes it crops up in the D800 page
519 * (CSET_ASCII) but at other times it's in the 0000 page (real
520 * Unicode). Therefore, this encoding is actually _stateful_:
521 * the one-byte encoding of 00-7F actually indicates `reuse the
522 * upper three bytes of the last character', and to encode an
523 * absolute value of 00-7F you need to use the two-byte form
526 if ((c->chr & ~0x7F) == *state) {
527 add(b, (unsigned char)(c->chr & 0x7F));
528 } else if (c->chr < 0x4000) {
529 add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80));
530 add(b, (unsigned char)(c->chr & 0xFF));
531 } else if (c->chr < 0x200000) {
532 add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0));
533 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
534 add(b, (unsigned char)(c->chr & 0xFF));
535 } else if (c->chr < 0x10000000) {
536 add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0));
537 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
538 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
539 add(b, (unsigned char)(c->chr & 0xFF));
542 add(b, (unsigned char)((c->chr >> 24) & 0xFF));
543 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
544 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
545 add(b, (unsigned char)(c->chr & 0xFF));
547 *state = c->chr & ~0xFF;
549 static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state)
552 * My encoding for attributes is 16-bit-granular and assumes
553 * that the top bit of the word is never required. I either
554 * store a two-byte value with the top bit clear (indicating
555 * just that value), or a four-byte value with the top bit set
556 * (indicating the same value with its top bit clear).
558 * However, first I permute the bits of the attribute value, so
559 * that the eight bits of colour (four in each of fg and bg)
560 * which are never non-zero unless xterm 256-colour mode is in
561 * use are placed higher up the word than everything else. This
562 * ensures that attribute values remain 16-bit _unless_ the
563 * user uses extended colour.
565 unsigned attr, colourbits;
569 assert(ATTR_BGSHIFT > ATTR_FGSHIFT);
571 colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF;
573 colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF;
575 attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) |
576 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
577 attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) |
578 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
580 attr |= (colourbits << (32-9));
583 add(b, (unsigned char)((attr >> 8) & 0xFF));
584 add(b, (unsigned char)(attr & 0xFF));
586 add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80));
587 add(b, (unsigned char)((attr >> 16) & 0xFF));
588 add(b, (unsigned char)((attr >> 8) & 0xFF));
589 add(b, (unsigned char)(attr & 0xFF));
592 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
595 * For combining characters, I just encode a bunch of ordinary
596 * chars using makeliteral_chr, and terminate with a \0
597 * character (which I know won't come up as a combining char
600 * I don't use the stateful encoding in makeliteral_chr.
602 unsigned long zstate;
611 makeliteral_chr(b, c, &zstate);
616 makeliteral_chr(b, &z, &zstate);
619 static termline *decompressline(unsigned char *data, int *bytes_used);
621 static unsigned char *compressline(termline *ldata)
623 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
626 * First, store the column count, 7 bits at a time, least
627 * significant `digit' first, with the high bit set on all but
633 add(b, (unsigned char)((n & 0x7F) | 0x80));
636 add(b, (unsigned char)(n));
640 * Next store the lattrs; same principle.
643 int n = ldata->lattr;
645 add(b, (unsigned char)((n & 0x7F) | 0x80));
648 add(b, (unsigned char)(n));
652 * Now we store a sequence of separate run-length encoded
653 * fragments, each containing exactly as many symbols as there
654 * are columns in the ldata.
656 * All of these have a common basic format:
658 * - a byte 00-7F indicates that X+1 literals follow it
659 * - a byte 80-FF indicates that a single literal follows it
660 * and expects to be repeated (X-0x80)+2 times.
662 * The format of the `literals' varies between the fragments.
664 makerle(b, ldata, makeliteral_chr);
665 makerle(b, ldata, makeliteral_attr);
666 makerle(b, ldata, makeliteral_cc);
669 * Diagnostics: ensure that the compressed data really does
670 * decompress to the right thing.
672 * XXX-REMOVE-BEFORE-RELEASE: This is a bit performance-heavy
673 * to be leaving in production code.
675 #ifndef CHECK_SB_COMPRESSION
681 #ifdef DIAGNOSTIC_SB_COMPRESSION
682 for (i = 0; i < b->len; i++) {
683 printf(" %02x ", b->data[i]);
688 dcl = decompressline(b->data, &dused);
689 assert(b->len == dused);
690 assert(ldata->cols == dcl->cols);
691 assert(ldata->lattr == dcl->lattr);
692 for (i = 0; i < ldata->cols; i++)
693 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
695 #ifdef DIAGNOSTIC_SB_COMPRESSION
696 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
697 ldata->cols, 4 * ldata->cols, dused,
698 (double)dused / (4 * ldata->cols));
706 * Trim the allocated memory so we don't waste any, and return.
708 return sresize(b->data, b->len, unsigned char);
711 static void readrle(struct buf *b, termline *ldata,
712 void (*readliteral)(struct buf *b, termchar *c,
713 termline *ldata, unsigned long *state))
716 unsigned long state = 0;
718 while (n < ldata->cols) {
724 int pos = b->len, count = hdr + 2 - 0x80;
726 assert(n < ldata->cols);
728 readliteral(b, ldata->chars + n, ldata, &state);
732 /* Just a sequence of consecutive literals. */
736 assert(n < ldata->cols);
737 readliteral(b, ldata->chars + n, ldata, &state);
743 assert(n == ldata->cols);
745 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
746 unsigned long *state)
751 * 00000000-0000007F: 0xxxxxxx
752 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
753 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
754 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
755 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
760 c->chr = byte | *state;
761 } else if (byte < 0xC0) {
762 c->chr = (byte &~ 0xC0) << 8;
764 } else if (byte < 0xE0) {
765 c->chr = (byte &~ 0xE0) << 16;
766 c->chr |= get(b) << 8;
768 } else if (byte < 0xF0) {
769 c->chr = (byte &~ 0xF0) << 24;
770 c->chr |= get(b) << 16;
771 c->chr |= get(b) << 8;
774 assert(byte == 0xF0);
775 c->chr = get(b) << 24;
776 c->chr |= get(b) << 16;
777 c->chr |= get(b) << 8;
780 *state = c->chr & ~0xFF;
782 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
783 unsigned long *state)
785 unsigned val, attr, colourbits;
797 colourbits = (val >> (32-9)) & 0xFF;
798 attr = (val & ((1<<(32-9))-1));
800 attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) |
801 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
802 attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) |
803 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
805 attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4);
806 attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4);
810 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
811 unsigned long *state)
814 unsigned long zstate;
815 int x = c - ldata->chars;
821 readliteral_chr(b, &n, ldata, &zstate);
824 add_cc(ldata, x, n.chr);
828 static termline *decompressline(unsigned char *data, int *bytes_used)
830 int ncols, byte, shift;
831 struct buf buffer, *b = &buffer;
838 * First read in the column count.
843 ncols |= (byte & 0x7F) << shift;
845 } while (byte & 0x80);
848 * Now create the output termline.
850 ldata = snew(termline);
851 ldata->chars = snewn(ncols, termchar);
852 ldata->cols = ldata->size = ncols;
853 ldata->temporary = TRUE;
857 * We must set all the cc pointers in ldata->chars to 0 right
858 * now, so that cc diagnostics that verify the integrity of the
859 * whole line will make sense while we're in the middle of
864 for (i = 0; i < ldata->cols; i++)
865 ldata->chars[i].cc_next = 0;
869 * Now read in the lattr.
871 ldata->lattr = shift = 0;
874 ldata->lattr |= (byte & 0x7F) << shift;
876 } while (byte & 0x80);
879 * Now we read in each of the RLE streams in turn.
881 readrle(b, ldata, readliteral_chr);
882 readrle(b, ldata, readliteral_attr);
883 readrle(b, ldata, readliteral_cc);
885 /* Return the number of bytes read, for diagnostic purposes. */
887 *bytes_used = b->len;
893 * Resize a line to make it `cols' columns wide.
895 static void resizeline(Terminal *term, termline *line, int cols)
899 if (line->cols != cols) {
901 oldcols = line->cols;
904 * This line is the wrong length, which probably means it
905 * hasn't been accessed since a resize. Resize it now.
907 * First, go through all the characters that will be thrown
908 * out in the resize (if we're shrinking the line) and
909 * return their cc lists to the cc free list.
911 for (i = cols; i < oldcols; i++)
915 * If we're shrinking the line, we now bodily move the
916 * entire cc section from where it started to where it now
917 * needs to be. (We have to do this before the resize, so
918 * that the data we're copying is still there. However, if
919 * we're expanding, we have to wait until _after_ the
920 * resize so that the space we're copying into is there.)
923 memmove(line->chars + cols, line->chars + oldcols,
924 (line->size - line->cols) * TSIZE);
927 * Now do the actual resize, leaving the _same_ amount of
928 * cc space as there was to begin with.
930 line->size += cols - oldcols;
931 line->chars = sresize(line->chars, line->size, TTYPE);
935 * If we're expanding the line, _now_ we move the cc
939 memmove(line->chars + cols, line->chars + oldcols,
940 (line->size - line->cols) * TSIZE);
943 * Go through what's left of the original line, and adjust
944 * the first cc_next pointer in each list. (All the
945 * subsequent ones are still valid because they are
946 * relative offsets within the cc block.) Also do the same
947 * to the head of the cc_free list.
949 for (i = 0; i < oldcols && i < cols; i++)
950 if (line->chars[i].cc_next)
951 line->chars[i].cc_next += cols - oldcols;
953 line->cc_free += cols - oldcols;
956 * And finally fill in the new space with erase chars. (We
957 * don't have to worry about cc lists here, because we
958 * _know_ the erase char doesn't have one.)
960 for (i = oldcols; i < cols; i++)
961 line->chars[i] = term->basic_erase_char;
963 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
968 * Get the number of lines in the scrollback.
970 static int sblines(Terminal *term)
972 int sblines = count234(term->scrollback);
973 if (term->cfg.erase_to_scrollback &&
974 term->alt_which && term->alt_screen) {
975 sblines += term->alt_sblines;
981 * Retrieve a line of the screen or of the scrollback, according to
982 * whether the y coordinate is non-negative or negative
985 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
992 whichtree = term->screen;
999 if (term->cfg.erase_to_scrollback &&
1000 term->alt_which && term->alt_screen) {
1001 altlines = term->alt_sblines;
1003 if (y < -altlines) {
1004 whichtree = term->scrollback;
1005 treeindex = y + altlines + count234(term->scrollback);
1007 whichtree = term->alt_screen;
1008 treeindex = y + term->alt_sblines;
1009 /* treeindex = y + count234(term->alt_screen); */
1012 if (whichtree == term->scrollback) {
1013 unsigned char *cline = index234(whichtree, treeindex);
1014 line = decompressline(cline, NULL);
1016 line = index234(whichtree, treeindex);
1019 /* We assume that we don't screw up and retrieve something out of range. */
1020 assert(line != NULL);
1022 resizeline(term, line, term->cols);
1023 /* FIXME: should we sort the compressed scrollback out here? */
1028 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1029 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1031 static void term_schedule_tblink(Terminal *term);
1032 static void term_schedule_cblink(Terminal *term);
1034 static void term_timer(void *ctx, long now)
1036 Terminal *term = (Terminal *)ctx;
1039 if (term->tblink_pending && now - term->next_tblink >= 0) {
1040 term->tblinker = !term->tblinker;
1041 term->tblink_pending = FALSE;
1042 term_schedule_tblink(term);
1046 if (term->cblink_pending && now - term->next_cblink >= 0) {
1047 term->cblinker = !term->cblinker;
1048 term->cblink_pending = FALSE;
1049 term_schedule_cblink(term);
1053 if (term->in_vbell && now - term->vbell_end >= 0) {
1054 term->in_vbell = FALSE;
1059 (term->window_update_pending && now - term->next_update >= 0))
1063 static void term_schedule_update(Terminal *term)
1065 if (!term->window_update_pending) {
1066 term->window_update_pending = TRUE;
1067 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1072 * Call this whenever the terminal window state changes, to queue
1075 static void seen_disp_event(Terminal *term)
1077 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1078 term_schedule_update(term);
1082 * Call when the terminal's blinking-text settings change, or when
1083 * a text blink has just occurred.
1085 static void term_schedule_tblink(Terminal *term)
1087 if (term->blink_is_real) {
1088 if (!term->tblink_pending)
1089 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1090 term->tblink_pending = TRUE;
1092 term->tblinker = 1; /* reset when not in use */
1093 term->tblink_pending = FALSE;
1098 * Likewise with cursor blinks.
1100 static void term_schedule_cblink(Terminal *term)
1102 if (term->cfg.blink_cur && term->has_focus) {
1103 if (!term->cblink_pending)
1104 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1105 term->cblink_pending = TRUE;
1107 term->cblinker = 1; /* reset when not in use */
1108 term->cblink_pending = FALSE;
1113 * Call to reset cursor blinking on new output.
1115 static void term_reset_cblink(Terminal *term)
1117 seen_disp_event(term);
1119 term->cblink_pending = FALSE;
1120 term_schedule_cblink(term);
1124 * Call to begin a visual bell.
1126 static void term_schedule_vbell(Terminal *term, int already_started,
1129 long ticks_already_gone;
1131 if (already_started)
1132 ticks_already_gone = GETTICKCOUNT() - startpoint;
1134 ticks_already_gone = 0;
1136 if (ticks_already_gone < VBELL_DELAY) {
1137 term->in_vbell = TRUE;
1138 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1141 term->in_vbell = FALSE;
1146 * Set up power-on settings for the terminal.
1148 static void power_on(Terminal *term)
1150 term->curs.x = term->curs.y = 0;
1151 term->alt_x = term->alt_y = 0;
1152 term->savecurs.x = term->savecurs.y = 0;
1153 term->alt_t = term->marg_t = 0;
1154 if (term->rows != -1)
1155 term->alt_b = term->marg_b = term->rows - 1;
1157 term->alt_b = term->marg_b = 0;
1158 if (term->cols != -1) {
1160 for (i = 0; i < term->cols; i++)
1161 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1163 term->alt_om = term->dec_om = term->cfg.dec_om;
1164 term->alt_ins = term->insert = FALSE;
1165 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
1166 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1167 term->alt_cset = term->cset = term->save_cset = 0;
1168 term->alt_utf = term->utf = term->save_utf = 0;
1169 term->utf_state = 0;
1170 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
1171 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII;
1173 term->in_vbell = FALSE;
1174 term->cursor_on = 1;
1175 term->big_cursor = 0;
1176 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
1177 term->term_editing = term->term_echoing = FALSE;
1178 term->app_cursor_keys = term->cfg.app_cursor;
1179 term->app_keypad_keys = term->cfg.app_keypad;
1180 term->use_bce = term->cfg.bce;
1181 term->blink_is_real = term->cfg.blinktext;
1182 term->erase_char = term->basic_erase_char;
1183 term->alt_which = 0;
1184 term_print_finish(term);
1187 for (i = 0; i < 256; i++)
1188 term->wordness[i] = term->cfg.wordness[i];
1191 swap_screen(term, 1, FALSE, FALSE);
1192 erase_lots(term, FALSE, TRUE, TRUE);
1193 swap_screen(term, 0, FALSE, FALSE);
1194 erase_lots(term, FALSE, TRUE, TRUE);
1196 term_schedule_tblink(term);
1197 term_schedule_cblink(term);
1201 * Force a screen update.
1203 void term_update(Terminal *term)
1207 term->window_update_pending = FALSE;
1209 ctx = get_ctx(term->frontend);
1211 int need_sbar_update = term->seen_disp_event;
1212 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1213 term->disptop = 0; /* return to main screen */
1214 term->seen_disp_event = 0;
1215 need_sbar_update = TRUE;
1218 if (need_sbar_update)
1220 do_paint(term, ctx, TRUE);
1221 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1227 * Called from front end when a keypress occurs, to trigger
1228 * anything magical that needs to happen in that situation.
1230 void term_seen_key_event(Terminal *term)
1233 * On any keypress, clear the bell overload mechanism
1234 * completely, on the grounds that large numbers of
1235 * beeps coming from deliberate key action are likely
1236 * to be intended (e.g. beeps from filename completion
1237 * blocking repeatedly).
1239 term->beep_overloaded = FALSE;
1240 while (term->beephead) {
1241 struct beeptime *tmp = term->beephead;
1242 term->beephead = tmp->next;
1245 term->beeptail = NULL;
1249 * Reset the scrollback on keypress, if we're doing that.
1251 if (term->cfg.scroll_on_key) {
1252 term->disptop = 0; /* return to main screen */
1253 seen_disp_event(term);
1258 * Same as power_on(), but an external function.
1260 void term_pwron(Terminal *term)
1263 if (term->ldisc) /* cause ldisc to notice changes */
1264 ldisc_send(term->ldisc, NULL, 0, 0);
1270 static void set_erase_char(Terminal *term)
1272 term->erase_char = term->basic_erase_char;
1274 term->erase_char.attr = (term->curr_attr &
1275 (ATTR_FGMASK | ATTR_BGMASK));
1279 * When the user reconfigures us, we need to check the forbidden-
1280 * alternate-screen config option, disable raw mouse mode if the
1281 * user has disabled mouse reporting, and abandon a print job if
1282 * the user has disabled printing.
1284 void term_reconfig(Terminal *term, Config *cfg)
1287 * Before adopting the new config, check all those terminal
1288 * settings which control power-on defaults; and if they've
1289 * changed, we will modify the current state as well as the
1290 * default one. The full list is: Auto wrap mode, DEC Origin
1291 * Mode, BCE, blinking text, character classes.
1293 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1296 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1297 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1298 reset_bce = (term->cfg.bce != cfg->bce);
1299 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1300 reset_charclass = 0;
1301 for (i = 0; i < lenof(term->cfg.wordness); i++)
1302 if (term->cfg.wordness[i] != cfg->wordness[i])
1303 reset_charclass = 1;
1306 * If the bidi or shaping settings have changed, flush the bidi
1309 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1310 term->cfg.bidi != cfg->bidi) {
1311 for (i = 0; i < term->bidi_cache_size; i++) {
1312 sfree(term->pre_bidi_cache[i].chars);
1313 sfree(term->post_bidi_cache[i].chars);
1314 term->pre_bidi_cache[i].width = -1;
1315 term->pre_bidi_cache[i].chars = NULL;
1316 term->post_bidi_cache[i].width = -1;
1317 term->post_bidi_cache[i].chars = NULL;
1321 term->cfg = *cfg; /* STRUCTURE COPY */
1324 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1326 term->alt_om = term->dec_om = term->cfg.dec_om;
1328 term->use_bce = term->cfg.bce;
1329 set_erase_char(term);
1332 term->blink_is_real = term->cfg.blinktext;
1334 if (reset_charclass)
1335 for (i = 0; i < 256; i++)
1336 term->wordness[i] = term->cfg.wordness[i];
1338 if (term->cfg.no_alt_screen)
1339 swap_screen(term, 0, FALSE, FALSE);
1340 if (term->cfg.no_mouse_rep) {
1341 term->xterm_mouse = 0;
1342 set_raw_mouse_mode(term->frontend, 0);
1344 if (term->cfg.no_remote_charset) {
1345 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1346 term->sco_acs = term->alt_sco_acs = 0;
1349 if (!*term->cfg.printer) {
1350 term_print_finish(term);
1352 term_schedule_tblink(term);
1353 term_schedule_cblink(term);
1357 * Clear the scrollback.
1359 void term_clrsb(Terminal *term)
1363 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1364 sfree(line); /* this is compressed data, not a termline */
1366 term->tempsblines = 0;
1367 term->alt_sblines = 0;
1372 * Initialise the terminal.
1374 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1380 * Allocate a new Terminal structure and initialise the fields
1383 term = snew(Terminal);
1384 term->frontend = frontend;
1385 term->ucsdata = ucsdata;
1386 term->cfg = *mycfg; /* STRUCTURE COPY */
1387 term->logctx = NULL;
1388 term->compatibility_level = TM_PUTTY;
1389 strcpy(term->id_string, "\033[?6c");
1390 term->cblink_pending = term->tblink_pending = FALSE;
1391 term->paste_buffer = NULL;
1392 term->paste_len = 0;
1393 term->last_paste = 0;
1394 bufchain_init(&term->inbuf);
1395 bufchain_init(&term->printer_buf);
1396 term->printing = term->only_printing = FALSE;
1397 term->print_job = NULL;
1398 term->vt52_mode = FALSE;
1399 term->cr_lf_return = FALSE;
1400 term->seen_disp_event = FALSE;
1401 term->xterm_mouse = term->mouse_is_down = FALSE;
1402 term->reset_132 = FALSE;
1403 term->cblinker = term->tblinker = 0;
1404 term->has_focus = 1;
1405 term->repeat_off = FALSE;
1406 term->termstate = TOPLEVEL;
1407 term->selstate = NO_SELECTION;
1410 term->screen = term->alt_screen = term->scrollback = NULL;
1411 term->tempsblines = 0;
1412 term->alt_sblines = 0;
1414 term->disptext = NULL;
1415 term->dispcursx = term->dispcursy = -1;
1418 term->rows = term->cols = -1;
1420 term->beephead = term->beeptail = NULL;
1421 #ifdef OPTIMISE_SCROLL
1422 term->scrollhead = term->scrolltail = NULL;
1423 #endif /* OPTIMISE_SCROLL */
1425 term->lastbeep = FALSE;
1426 term->beep_overloaded = FALSE;
1427 term->attr_mask = 0xffffffff;
1428 term->resize_fn = NULL;
1429 term->resize_ctx = NULL;
1430 term->in_term_out = FALSE;
1432 term->ltemp_size = 0;
1433 term->wcFrom = NULL;
1435 term->wcFromTo_size = 0;
1437 term->window_update_pending = FALSE;
1439 term->bidi_cache_size = 0;
1440 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1443 term->basic_erase_char.chr = CSET_ASCII | ' ';
1444 term->basic_erase_char.attr = ATTR_DEFAULT;
1445 term->basic_erase_char.cc_next = 0;
1446 term->erase_char = term->basic_erase_char;
1451 void term_free(Terminal *term)
1454 struct beeptime *beep;
1457 while ((line = delpos234(term->scrollback, 0)) != NULL)
1458 sfree(line); /* compressed data, not a termline */
1459 freetree234(term->scrollback);
1460 while ((line = delpos234(term->screen, 0)) != NULL)
1462 freetree234(term->screen);
1463 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1465 freetree234(term->alt_screen);
1466 if (term->disptext) {
1467 for (i = 0; i < term->rows; i++)
1468 freeline(term->disptext[i]);
1470 sfree(term->disptext);
1471 while (term->beephead) {
1472 beep = term->beephead;
1473 term->beephead = beep->next;
1476 bufchain_clear(&term->inbuf);
1478 printer_finish_job(term->print_job);
1479 bufchain_clear(&term->printer_buf);
1480 sfree(term->paste_buffer);
1482 sfree(term->wcFrom);
1485 for (i = 0; i < term->bidi_cache_size; i++) {
1486 sfree(term->pre_bidi_cache[i].chars);
1487 sfree(term->post_bidi_cache[i].chars);
1489 sfree(term->pre_bidi_cache);
1490 sfree(term->post_bidi_cache);
1492 expire_timer_context(term);
1498 * Set up the terminal for a given size.
1500 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1503 termline **newdisp, *line;
1504 int i, j, oldrows = term->rows;
1506 int save_alt_which = term->alt_which;
1508 if (newrows == term->rows && newcols == term->cols &&
1509 newsavelines == term->savelines)
1510 return; /* nothing to do */
1513 swap_screen(term, 0, FALSE, FALSE);
1515 term->alt_t = term->marg_t = 0;
1516 term->alt_b = term->marg_b = newrows - 1;
1518 if (term->rows == -1) {
1519 term->scrollback = newtree234(NULL);
1520 term->screen = newtree234(NULL);
1521 term->tempsblines = 0;
1526 * Resize the screen and scrollback. We only need to shift
1527 * lines around within our data structures, because lineptr()
1528 * will take care of resizing each individual line if
1531 * - If the new screen is longer, we shunt lines in from temporary
1532 * scrollback if possible, otherwise we add new blank lines at
1535 * - If the new screen is shorter, we remove any blank lines at
1536 * the bottom if possible, otherwise shunt lines above the cursor
1537 * to scrollback if possible, otherwise delete lines below the
1540 * - Then, if the new scrollback length is less than the
1541 * amount of scrollback we actually have, we must throw some
1544 sblen = count234(term->scrollback);
1545 /* Do this loop to expand the screen if newrows > rows */
1546 assert(term->rows == count234(term->screen));
1547 while (term->rows < newrows) {
1548 if (term->tempsblines > 0) {
1549 unsigned char *cline;
1550 /* Insert a line from the scrollback at the top of the screen. */
1551 assert(sblen >= term->tempsblines);
1552 cline = delpos234(term->scrollback, --sblen);
1553 line = decompressline(cline, NULL);
1555 line->temporary = FALSE; /* reconstituted line is now real */
1556 term->tempsblines -= 1;
1557 addpos234(term->screen, line, 0);
1559 term->savecurs.y += 1;
1561 /* Add a new blank line at the bottom of the screen. */
1562 line = newline(term, newcols, FALSE);
1563 addpos234(term->screen, line, count234(term->screen));
1567 /* Do this loop to shrink the screen if newrows < rows */
1568 while (term->rows > newrows) {
1569 if (term->curs.y < term->rows - 1) {
1570 /* delete bottom row, unless it contains the cursor */
1571 sfree(delpos234(term->screen, term->rows - 1));
1573 /* push top row to scrollback */
1574 line = delpos234(term->screen, 0);
1575 addpos234(term->scrollback, compressline(line), sblen++);
1577 term->tempsblines += 1;
1579 term->savecurs.y -= 1;
1583 assert(term->rows == newrows);
1584 assert(count234(term->screen) == newrows);
1586 /* Delete any excess lines from the scrollback. */
1587 while (sblen > newsavelines) {
1588 line = delpos234(term->scrollback, 0);
1592 if (sblen < term->tempsblines)
1593 term->tempsblines = sblen;
1594 assert(count234(term->scrollback) <= newsavelines);
1595 assert(count234(term->scrollback) >= term->tempsblines);
1598 /* Make a new displayed text buffer. */
1599 newdisp = snewn(newrows, termline *);
1600 for (i = 0; i < newrows; i++) {
1601 newdisp[i] = newline(term, newcols, FALSE);
1602 for (j = 0; j < newcols; j++)
1603 newdisp[i]->chars[j].attr = ATTR_INVALID;
1605 if (term->disptext) {
1606 for (i = 0; i < oldrows; i++)
1607 freeline(term->disptext[i]);
1609 sfree(term->disptext);
1610 term->disptext = newdisp;
1611 term->dispcursx = term->dispcursy = -1;
1613 /* Make a new alternate screen. */
1614 newalt = newtree234(NULL);
1615 for (i = 0; i < newrows; i++) {
1616 line = newline(term, newcols, TRUE);
1617 addpos234(newalt, line, i);
1619 if (term->alt_screen) {
1620 while (NULL != (line = delpos234(term->alt_screen, 0)))
1622 freetree234(term->alt_screen);
1624 term->alt_screen = newalt;
1625 term->alt_sblines = 0;
1627 term->tabs = sresize(term->tabs, newcols, unsigned char);
1630 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1631 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1634 /* Check that the cursor positions are still valid. */
1635 if (term->savecurs.y < 0)
1636 term->savecurs.y = 0;
1637 if (term->savecurs.y >= newrows)
1638 term->savecurs.y = newrows - 1;
1639 if (term->curs.y < 0)
1641 if (term->curs.y >= newrows)
1642 term->curs.y = newrows - 1;
1643 if (term->curs.x >= newcols)
1644 term->curs.x = newcols - 1;
1645 term->alt_x = term->alt_y = 0;
1646 term->wrapnext = term->alt_wnext = FALSE;
1648 term->rows = newrows;
1649 term->cols = newcols;
1650 term->savelines = newsavelines;
1652 swap_screen(term, save_alt_which, FALSE, FALSE);
1656 if (term->resize_fn)
1657 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1661 * Hand a function and context pointer to the terminal which it can
1662 * use to notify a back end of resizes.
1664 void term_provide_resize_fn(Terminal *term,
1665 void (*resize_fn)(void *, int, int),
1668 term->resize_fn = resize_fn;
1669 term->resize_ctx = resize_ctx;
1670 if (term->cols > 0 && term->rows > 0)
1671 resize_fn(resize_ctx, term->cols, term->rows);
1674 /* Find the bottom line on the screen that has any content.
1675 * If only the top line has content, returns 0.
1676 * If no lines have content, return -1.
1678 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1681 for (i = count234(screen) - 1; i >= 0; i--) {
1682 termline *line = index234(screen, i);
1684 for (j = 0; j < line->cols; j++)
1685 if (!termchars_equal(&line->chars[j], &term->erase_char))
1687 if (j != line->cols) break;
1693 * Swap screens. If `reset' is TRUE and we have been asked to
1694 * switch to the alternate screen, we must bring most of its
1695 * configuration from the main screen and erase the contents of the
1696 * alternate screen completely. (This is even true if we're already
1697 * on it! Blame xterm.)
1699 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1705 reset = FALSE; /* do no weird resetting if which==0 */
1707 if (which != term->alt_which) {
1708 term->alt_which = which;
1710 ttr = term->alt_screen;
1711 term->alt_screen = term->screen;
1713 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1715 if (!reset && !keep_cur_pos)
1716 term->curs.x = term->alt_x;
1719 if (!reset && !keep_cur_pos)
1720 term->curs.y = term->alt_y;
1723 if (!reset) term->marg_t = term->alt_t;
1726 if (!reset) term->marg_b = term->alt_b;
1729 if (!reset) term->dec_om = term->alt_om;
1732 if (!reset) term->wrap = term->alt_wrap;
1735 if (!reset) term->wrapnext = term->alt_wnext;
1736 term->alt_wnext = t;
1738 if (!reset) term->insert = term->alt_ins;
1741 if (!reset) term->cset = term->alt_cset;
1744 if (!reset) term->utf = term->alt_utf;
1747 if (!reset) term->sco_acs = term->alt_sco_acs;
1748 term->alt_sco_acs = t;
1751 if (reset && term->screen) {
1753 * Yes, this _is_ supposed to honour background-colour-erase.
1755 erase_lots(term, FALSE, TRUE, TRUE);
1760 * Update the scroll bar.
1762 static void update_sbar(Terminal *term)
1764 int nscroll = sblines(term);
1765 set_sbar(term->frontend, nscroll + term->rows,
1766 nscroll + term->disptop, term->rows);
1770 * Check whether the region bounded by the two pointers intersects
1771 * the scroll region, and de-select the on-screen selection if so.
1773 static void check_selection(Terminal *term, pos from, pos to)
1775 if (poslt(from, term->selend) && poslt(term->selstart, to))
1780 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1781 * for backward.) `sb' is TRUE if the scrolling is permitted to
1782 * affect the scrollback buffer.
1784 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1787 int i, seltop, olddisptop, shift;
1789 if (topline != 0 || term->alt_which != 0)
1792 olddisptop = term->disptop;
1796 line = delpos234(term->screen, botline);
1797 resizeline(term, line, term->cols);
1798 for (i = 0; i < term->cols; i++)
1799 copy_termchar(line, i, &term->erase_char);
1800 line->lattr = LATTR_NORM;
1801 addpos234(term->screen, line, topline);
1803 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1805 if (term->selstart.y > botline) {
1806 term->selstart.y = botline + 1;
1807 term->selstart.x = 0;
1810 if (term->selend.y >= topline && term->selend.y <= botline) {
1812 if (term->selend.y > botline) {
1813 term->selend.y = botline + 1;
1822 line = delpos234(term->screen, topline);
1823 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
1824 if (sb && term->savelines > 0) {
1825 int sblen = count234(term->scrollback);
1827 * We must add this line to the scrollback. We'll
1828 * remove a line from the top of the scrollback if
1829 * the scrollback is full.
1831 if (sblen == term->savelines) {
1832 unsigned char *cline;
1835 cline = delpos234(term->scrollback, 0);
1838 term->tempsblines += 1;
1840 addpos234(term->scrollback, compressline(line), sblen);
1842 /* now `line' itself can be reused as the bottom line */
1845 * If the user is currently looking at part of the
1846 * scrollback, and they haven't enabled any options
1847 * that are going to reset the scrollback as a
1848 * result of this movement, then the chances are
1849 * they'd like to keep looking at the same line. So
1850 * we move their viewpoint at the same rate as the
1851 * scroll, at least until their viewpoint hits the
1852 * top end of the scrollback buffer, at which point
1853 * we don't have the choice any more.
1855 * Thanks to Jan Holmen Holsten for the idea and
1856 * initial implementation.
1858 if (term->disptop > -term->savelines && term->disptop < 0)
1861 resizeline(term, line, term->cols);
1862 for (i = 0; i < term->cols; i++)
1863 copy_termchar(line, i, &term->erase_char);
1864 line->lattr = LATTR_NORM;
1865 addpos234(term->screen, line, botline);
1868 * If the selection endpoints move into the scrollback,
1869 * we keep them moving until they hit the top. However,
1870 * of course, if the line _hasn't_ moved into the
1871 * scrollback then we don't do this, and cut them off
1872 * at the top of the scroll region.
1874 * This applies to selstart and selend (for an existing
1875 * selection), and also selanchor (for one being
1876 * selected as we speak).
1878 seltop = sb ? -term->savelines : topline;
1880 if (term->selstate != NO_SELECTION) {
1881 if (term->selstart.y >= seltop &&
1882 term->selstart.y <= botline) {
1884 if (term->selstart.y < seltop) {
1885 term->selstart.y = seltop;
1886 term->selstart.x = 0;
1889 if (term->selend.y >= seltop && term->selend.y <= botline) {
1891 if (term->selend.y < seltop) {
1892 term->selend.y = seltop;
1896 if (term->selanchor.y >= seltop &&
1897 term->selanchor.y <= botline) {
1898 term->selanchor.y--;
1899 if (term->selanchor.y < seltop) {
1900 term->selanchor.y = seltop;
1901 term->selanchor.x = 0;
1909 #ifdef OPTIMISE_SCROLL
1910 shift += term->disptop - olddisptop;
1911 if (shift < term->rows && shift > -term->rows && shift != 0)
1912 scroll_display(term, topline, botline, shift);
1913 #endif /* OPTIMISE_SCROLL */
1916 #ifdef OPTIMISE_SCROLL
1918 * Add a scroll of a region on the screen into the pending scroll list.
1919 * `lines' is +ve for scrolling forward, -ve for backward.
1921 * If the scroll is on the same area as the last scroll in the list,
1924 static void save_scroll(Terminal *term, int topline, int botline, int lines)
1926 struct scrollregion *newscroll;
1927 if (term->scrolltail &&
1928 term->scrolltail->topline == topline &&
1929 term->scrolltail->botline == botline) {
1930 term->scrolltail->lines += lines;
1932 newscroll = snew(struct scrollregion);
1933 newscroll->topline = topline;
1934 newscroll->botline = botline;
1935 newscroll->lines = lines;
1936 newscroll->next = NULL;
1938 if (!term->scrollhead)
1939 term->scrollhead = newscroll;
1941 term->scrolltail->next = newscroll;
1942 term->scrolltail = newscroll;
1947 * Scroll the physical display, and our conception of it in disptext.
1949 static void scroll_display(Terminal *term, int topline, int botline, int lines)
1951 int distance, nlines, i, j;
1953 distance = lines > 0 ? lines : -lines;
1954 nlines = botline - topline + 1 - distance;
1956 for (i = 0; i < nlines; i++)
1957 for (j = 0; j < term->cols; j++)
1958 copy_termchar(term->disptext[start+i], j,
1959 term->disptext[start+i+distance]->chars+j);
1960 if (term->dispcursy >= 0 &&
1961 term->dispcursy >= topline + distance &&
1962 term->dispcursy < topline + distance + nlines)
1963 term->dispcursy -= distance;
1964 for (i = 0; i < distance; i++)
1965 for (j = 0; j < term->cols; j++)
1966 term->disptext[start+nlines+i]->chars[j].attr |= ATTR_INVALID;
1968 for (i = nlines; i-- ;)
1969 for (j = 0; j < term->cols; j++)
1970 copy_termchar(term->disptext[start+i+distance], j,
1971 term->disptext[start+i]->chars+j);
1972 if (term->dispcursy >= 0 &&
1973 term->dispcursy >= topline &&
1974 term->dispcursy < topline + nlines)
1975 term->dispcursy += distance;
1976 for (i = 0; i < distance; i++)
1977 for (j = 0; j < term->cols; j++)
1978 term->disptext[start+i]->chars[j].attr |= ATTR_INVALID;
1980 save_scroll(term, topline, botline, lines);
1982 #endif /* OPTIMISE_SCROLL */
1985 * Move the cursor to a given position, clipping at boundaries. We
1986 * may or may not want to clip at the scroll margin: marg_clip is 0
1987 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
1988 * even _being_ outside the margins.
1990 static void move(Terminal *term, int x, int y, int marg_clip)
1994 if (x >= term->cols)
1997 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2000 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2006 if (y >= term->rows)
2010 term->wrapnext = FALSE;
2014 * Save or restore the cursor and SGR mode.
2016 static void save_cursor(Terminal *term, int save)
2019 term->savecurs = term->curs;
2020 term->save_attr = term->curr_attr;
2021 term->save_cset = term->cset;
2022 term->save_utf = term->utf;
2023 term->save_wnext = term->wrapnext;
2024 term->save_csattr = term->cset_attr[term->cset];
2025 term->save_sco_acs = term->sco_acs;
2027 term->curs = term->savecurs;
2028 /* Make sure the window hasn't shrunk since the save */
2029 if (term->curs.x >= term->cols)
2030 term->curs.x = term->cols - 1;
2031 if (term->curs.y >= term->rows)
2032 term->curs.y = term->rows - 1;
2034 term->curr_attr = term->save_attr;
2035 term->cset = term->save_cset;
2036 term->utf = term->save_utf;
2037 term->wrapnext = term->save_wnext;
2039 * wrapnext might reset to False if the x position is no
2040 * longer at the rightmost edge.
2042 if (term->wrapnext && term->curs.x < term->cols-1)
2043 term->wrapnext = FALSE;
2044 term->cset_attr[term->cset] = term->save_csattr;
2045 term->sco_acs = term->save_sco_acs;
2046 set_erase_char(term);
2051 * This function is called before doing _anything_ which affects
2052 * only part of a line of text. It is used to mark the boundary
2053 * between two character positions, and it indicates that some sort
2054 * of effect is going to happen on only one side of that boundary.
2056 * The effect of this function is to check whether a CJK
2057 * double-width character is straddling the boundary, and to remove
2058 * it and replace it with two spaces if so. (Of course, one or
2059 * other of those spaces is then likely to be replaced with
2060 * something else again, as a result of whatever happens next.)
2062 * Also, if the boundary is at the right-hand _edge_ of the screen,
2063 * it implies something deliberate is being done to the rightmost
2064 * column position; hence we must clear LATTR_WRAPPED2.
2066 * The input to the function is the coordinates of the _second_
2067 * character of the pair.
2069 static void check_boundary(Terminal *term, int x, int y)
2073 /* Validate input coordinates, just in case. */
2074 if (x == 0 || x > term->cols)
2077 ldata = scrlineptr(y);
2078 if (x == term->cols) {
2079 ldata->lattr &= ~LATTR_WRAPPED2;
2081 if (ldata->chars[x].chr == UCSWIDE) {
2082 clear_cc(ldata, x-1);
2084 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2085 ldata->chars[x] = ldata->chars[x-1];
2091 * Erase a large portion of the screen: the whole screen, or the
2092 * whole line, or parts thereof.
2094 static void erase_lots(Terminal *term,
2095 int line_only, int from_begin, int to_end)
2099 int erasing_lines_from_top = 0;
2102 start.y = term->curs.y;
2104 end.y = term->curs.y + 1;
2106 erase_lattr = FALSE;
2121 if (!from_begin || !to_end)
2122 check_boundary(term, term->curs.x, term->curs.y);
2123 check_selection(term, start, end);
2125 /* Clear screen also forces a full window redraw, just in case. */
2126 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2127 term_invalidate(term);
2129 /* Lines scrolled away shouldn't be brought back on if the terminal
2131 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2132 erasing_lines_from_top = 1;
2134 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2135 /* If it's a whole number of lines, starting at the top, and
2136 * we're fully erasing them, erase by scrolling and keep the
2137 * lines in the scrollback. */
2138 int scrolllines = end.y;
2139 if (end.y == term->rows) {
2140 /* Shrink until we find a non-empty row.*/
2141 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2143 if (scrolllines > 0)
2144 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2146 termline *ldata = scrlineptr(start.y);
2147 while (poslt(start, end)) {
2148 if (start.x == term->cols) {
2150 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2152 ldata->lattr = LATTR_NORM;
2154 copy_termchar(ldata, start.x, &term->erase_char);
2156 if (incpos(start) && start.y < term->rows) {
2157 ldata = scrlineptr(start.y);
2162 /* After an erase of lines from the top of the screen, we shouldn't
2163 * bring the lines back again if the terminal enlarges (since the user or
2164 * application has explictly thrown them away). */
2165 if (erasing_lines_from_top && !(term->alt_which))
2166 term->tempsblines = 0;
2170 * Insert or delete characters within the current line. n is +ve if
2171 * insertion is desired, and -ve for deletion.
2173 static void insch(Terminal *term, int n)
2175 int dir = (n < 0 ? -1 : +1);
2180 n = (n < 0 ? -n : n);
2181 if (n > term->cols - term->curs.x)
2182 n = term->cols - term->curs.x;
2183 m = term->cols - term->curs.x - n;
2184 cursplus.y = term->curs.y;
2185 cursplus.x = term->curs.x + n;
2186 check_selection(term, term->curs, cursplus);
2187 check_boundary(term, term->curs.x, term->curs.y);
2189 check_boundary(term, term->curs.x + n, term->curs.y);
2190 ldata = scrlineptr(term->curs.y);
2192 for (j = 0; j < m; j++)
2193 move_termchar(ldata,
2194 ldata->chars + term->curs.x + j,
2195 ldata->chars + term->curs.x + j + n);
2197 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2200 move_termchar(ldata,
2201 ldata->chars + term->curs.x + j + n,
2202 ldata->chars + term->curs.x + j);
2204 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2209 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2210 * whether the mode is a DEC private one or a normal one.)
2212 static void toggle_mode(Terminal *term, int mode, int query, int state)
2216 case 1: /* DECCKM: application cursor keys */
2217 term->app_cursor_keys = state;
2219 case 2: /* DECANM: VT52 mode */
2220 term->vt52_mode = !state;
2221 if (term->vt52_mode) {
2222 term->blink_is_real = FALSE;
2223 term->vt52_bold = FALSE;
2225 term->blink_is_real = term->cfg.blinktext;
2227 term_schedule_tblink(term);
2229 case 3: /* DECCOLM: 80/132 columns */
2231 if (!term->cfg.no_remote_resize)
2232 request_resize(term->frontend, state ? 132 : 80, term->rows);
2233 term->reset_132 = state;
2234 term->alt_t = term->marg_t = 0;
2235 term->alt_b = term->marg_b = term->rows - 1;
2236 move(term, 0, 0, 0);
2237 erase_lots(term, FALSE, TRUE, TRUE);
2239 case 5: /* DECSCNM: reverse video */
2241 * Toggle reverse video. If we receive an OFF within the
2242 * visual bell timeout period after an ON, we trigger an
2243 * effective visual bell, so that ESC[?5hESC[?5l will
2244 * always be an actually _visible_ visual bell.
2246 if (term->rvideo && !state) {
2247 /* This is an OFF, so set up a vbell */
2248 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2249 } else if (!term->rvideo && state) {
2250 /* This is an ON, so we notice the time and save it. */
2251 term->rvbell_startpoint = GETTICKCOUNT();
2253 term->rvideo = state;
2254 seen_disp_event(term);
2256 case 6: /* DECOM: DEC origin mode */
2257 term->dec_om = state;
2259 case 7: /* DECAWM: auto wrap */
2262 case 8: /* DECARM: auto key repeat */
2263 term->repeat_off = !state;
2265 case 10: /* DECEDM: set local edit mode */
2266 term->term_editing = state;
2267 if (term->ldisc) /* cause ldisc to notice changes */
2268 ldisc_send(term->ldisc, NULL, 0, 0);
2270 case 25: /* DECTCEM: enable/disable cursor */
2271 compatibility2(OTHER, VT220);
2272 term->cursor_on = state;
2273 seen_disp_event(term);
2275 case 47: /* alternate screen */
2276 compatibility(OTHER);
2278 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2281 case 1000: /* xterm mouse 1 */
2282 term->xterm_mouse = state ? 1 : 0;
2283 set_raw_mouse_mode(term->frontend, state);
2285 case 1002: /* xterm mouse 2 */
2286 term->xterm_mouse = state ? 2 : 0;
2287 set_raw_mouse_mode(term->frontend, state);
2289 case 1047: /* alternate screen */
2290 compatibility(OTHER);
2292 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2295 case 1048: /* save/restore cursor */
2296 if (!term->cfg.no_alt_screen)
2297 save_cursor(term, state);
2298 if (!state) seen_disp_event(term);
2300 case 1049: /* cursor & alternate screen */
2301 if (state && !term->cfg.no_alt_screen)
2302 save_cursor(term, state);
2303 if (!state) seen_disp_event(term);
2304 compatibility(OTHER);
2306 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2307 if (!state && !term->cfg.no_alt_screen)
2308 save_cursor(term, state);
2313 case 4: /* IRM: set insert mode */
2314 compatibility(VT102);
2315 term->insert = state;
2317 case 12: /* SRM: set echo mode */
2318 term->term_echoing = !state;
2319 if (term->ldisc) /* cause ldisc to notice changes */
2320 ldisc_send(term->ldisc, NULL, 0, 0);
2322 case 20: /* LNM: Return sends ... */
2323 term->cr_lf_return = state;
2325 case 34: /* WYULCURM: Make cursor BIG */
2326 compatibility2(OTHER, VT220);
2327 term->big_cursor = !state;
2332 * Process an OSC sequence: set window title or icon name.
2334 static void do_osc(Terminal *term)
2337 while (term->osc_strlen--)
2338 term->wordness[(unsigned char)
2339 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2341 term->osc_string[term->osc_strlen] = '\0';
2342 switch (term->esc_args[0]) {
2345 if (!term->cfg.no_remote_wintitle)
2346 set_icon(term->frontend, term->osc_string);
2347 if (term->esc_args[0] == 1)
2349 /* fall through: parameter 0 means set both */
2352 if (!term->cfg.no_remote_wintitle)
2353 set_title(term->frontend, term->osc_string);
2360 * ANSI printing routines.
2362 static void term_print_setup(Terminal *term)
2364 bufchain_clear(&term->printer_buf);
2365 term->print_job = printer_start_job(term->cfg.printer);
2367 static void term_print_flush(Terminal *term)
2372 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2373 bufchain_prefix(&term->printer_buf, &data, &len);
2376 printer_job_data(term->print_job, data, len);
2377 bufchain_consume(&term->printer_buf, len);
2380 static void term_print_finish(Terminal *term)
2386 if (!term->printing && !term->only_printing)
2387 return; /* we need do nothing */
2389 term_print_flush(term);
2390 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2391 bufchain_prefix(&term->printer_buf, &data, &len);
2393 if (c == '\033' || c == '\233') {
2394 bufchain_consume(&term->printer_buf, size);
2397 printer_job_data(term->print_job, &c, 1);
2398 bufchain_consume(&term->printer_buf, 1);
2401 printer_finish_job(term->print_job);
2402 term->print_job = NULL;
2403 term->printing = term->only_printing = FALSE;
2407 * Remove everything currently in `inbuf' and stick it up on the
2408 * in-memory display. There's a big state machine in here to
2409 * process escape sequences...
2411 static void term_out(Terminal *term)
2415 unsigned char localbuf[256], *chars;
2420 chars = NULL; /* placate compiler warnings */
2421 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
2425 bufchain_prefix(&term->inbuf, &ret, &nchars);
2426 if (nchars > sizeof(localbuf))
2427 nchars = sizeof(localbuf);
2428 memcpy(localbuf, ret, nchars);
2429 bufchain_consume(&term->inbuf, nchars);
2431 assert(chars != NULL);
2437 * Optionally log the session traffic to a file. Useful for
2438 * debugging and possibly also useful for actual logging.
2440 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2441 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2447 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2448 * be able to display 8-bit characters, but I'll let that go 'cause
2453 * If we're printing, add the character to the printer
2456 if (term->printing) {
2457 bufchain_add(&term->printer_buf, &c, 1);
2460 * If we're in print-only mode, we use a much simpler
2461 * state machine designed only to recognise the ESC[4i
2462 * termination sequence.
2464 if (term->only_printing) {
2466 term->print_state = 1;
2467 else if (c == (unsigned char)'\233')
2468 term->print_state = 2;
2469 else if (c == '[' && term->print_state == 1)
2470 term->print_state = 2;
2471 else if (c == '4' && term->print_state == 2)
2472 term->print_state = 3;
2473 else if (c == 'i' && term->print_state == 3)
2474 term->print_state = 4;
2476 term->print_state = 0;
2477 if (term->print_state == 4) {
2478 term_print_finish(term);
2484 /* First see about all those translations. */
2485 if (term->termstate == TOPLEVEL) {
2487 switch (term->utf_state) {
2490 /* UTF-8 must be stateless so we ignore iso2022. */
2491 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2492 c = term->ucsdata->unitab_ctrl[c];
2493 else c = ((unsigned char)c) | CSET_ASCII;
2495 } else if ((c & 0xe0) == 0xc0) {
2496 term->utf_size = term->utf_state = 1;
2497 term->utf_char = (c & 0x1f);
2498 } else if ((c & 0xf0) == 0xe0) {
2499 term->utf_size = term->utf_state = 2;
2500 term->utf_char = (c & 0x0f);
2501 } else if ((c & 0xf8) == 0xf0) {
2502 term->utf_size = term->utf_state = 3;
2503 term->utf_char = (c & 0x07);
2504 } else if ((c & 0xfc) == 0xf8) {
2505 term->utf_size = term->utf_state = 4;
2506 term->utf_char = (c & 0x03);
2507 } else if ((c & 0xfe) == 0xfc) {
2508 term->utf_size = term->utf_state = 5;
2509 term->utf_char = (c & 0x01);
2520 if ((c & 0xC0) != 0x80) {
2523 term->utf_state = 0;
2526 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2527 if (--term->utf_state)
2532 /* Is somebody trying to be evil! */
2534 (c < 0x800 && term->utf_size >= 2) ||
2535 (c < 0x10000 && term->utf_size >= 3) ||
2536 (c < 0x200000 && term->utf_size >= 4) ||
2537 (c < 0x4000000 && term->utf_size >= 5))
2540 /* Unicode line separator and paragraph separator are CR-LF */
2541 if (c == 0x2028 || c == 0x2029)
2544 /* High controls are probably a Baaad idea too. */
2548 /* The UTF-16 surrogates are not nice either. */
2549 /* The standard give the option of decoding these:
2550 * I don't want to! */
2551 if (c >= 0xD800 && c < 0xE000)
2554 /* ISO 10646 characters now limited to UTF-16 range. */
2558 /* This is currently a TagPhobic application.. */
2559 if (c >= 0xE0000 && c <= 0xE007F)
2562 /* U+FEFF is best seen as a null. */
2565 /* But U+FFFE is an error. */
2566 if (c == 0xFFFE || c == 0xFFFF)
2571 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2572 else if(term->sco_acs &&
2573 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2575 if (term->sco_acs == 2) c |= 0x80;
2578 switch (term->cset_attr[term->cset]) {
2580 * Linedraw characters are different from 'ESC ( B'
2581 * only for a small range. For ones outside that
2582 * range, make sure we use the same font as well as
2583 * the same encoding.
2586 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2587 c = term->ucsdata->unitab_ctrl[c];
2589 c = ((unsigned char) c) | CSET_LINEDRW;
2593 /* If UK-ASCII, make the '#' a LineDraw Pound */
2595 c = '}' | CSET_LINEDRW;
2598 /*FALLTHROUGH*/ case CSET_ASCII:
2599 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2600 c = term->ucsdata->unitab_ctrl[c];
2602 c = ((unsigned char) c) | CSET_ASCII;
2605 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2611 /* How about C1 controls ? */
2612 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2613 !term->vt52_mode && has_compat(VT220)) {
2614 term->termstate = SEEN_ESC;
2615 term->esc_query = FALSE;
2616 c = '@' + (c & 0x1F);
2619 /* Or the GL control. */
2620 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2621 if (term->curs.x && !term->wrapnext)
2623 term->wrapnext = FALSE;
2624 /* destructive backspace might be disabled */
2625 if (!term->cfg.no_dbackspace) {
2626 check_boundary(term, term->curs.x, term->curs.y);
2627 check_boundary(term, term->curs.x+1, term->curs.y);
2628 copy_termchar(scrlineptr(term->curs.y),
2629 term->curs.x, &term->erase_char);
2632 /* Or normal C0 controls. */
2633 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2635 case '\005': /* ENQ: terminal type query */
2636 /* Strictly speaking this is VT100 but a VT100 defaults to
2637 * no response. Other terminals respond at their option.
2639 * Don't put a CR in the default string as this tends to
2640 * upset some weird software.
2642 * An xterm returns "xterm" (5 characters)
2644 compatibility(ANSIMIN);
2646 char abuf[256], *s, *d;
2648 for (s = term->cfg.answerback, d = abuf; *s; s++) {
2650 if (*s >= 'a' && *s <= 'z')
2651 *d++ = (*s - ('a' - 1));
2652 else if ((*s >= '@' && *s <= '_') ||
2653 *s == '?' || (*s & 0x80))
2658 } else if (*s == '^') {
2663 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2667 case '\007': /* BEL: Bell */
2669 struct beeptime *newbeep;
2670 unsigned long ticks;
2672 ticks = GETTICKCOUNT();
2674 if (!term->beep_overloaded) {
2675 newbeep = snew(struct beeptime);
2676 newbeep->ticks = ticks;
2677 newbeep->next = NULL;
2678 if (!term->beephead)
2679 term->beephead = newbeep;
2681 term->beeptail->next = newbeep;
2682 term->beeptail = newbeep;
2687 * Throw out any beeps that happened more than
2690 while (term->beephead &&
2691 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2692 struct beeptime *tmp = term->beephead;
2693 term->beephead = tmp->next;
2695 if (!term->beephead)
2696 term->beeptail = NULL;
2700 if (term->cfg.bellovl && term->beep_overloaded &&
2701 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2703 * If we're currently overloaded and the
2704 * last beep was more than s seconds ago,
2705 * leave overload mode.
2707 term->beep_overloaded = FALSE;
2708 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2709 term->nbeeps >= term->cfg.bellovl_n) {
2711 * Now, if we have n or more beeps
2712 * remaining in the queue, go into overload
2715 term->beep_overloaded = TRUE;
2717 term->lastbeep = ticks;
2720 * Perform an actual beep if we're not overloaded.
2722 if (!term->cfg.bellovl || !term->beep_overloaded) {
2723 beep(term->frontend, term->cfg.beep);
2725 if (term->cfg.beep == BELL_VISUAL) {
2726 term_schedule_vbell(term, FALSE, 0);
2729 seen_disp_event(term);
2732 case '\b': /* BS: Back space */
2733 if (term->curs.x == 0 &&
2734 (term->curs.y == 0 || term->wrap == 0))
2736 else if (term->curs.x == 0 && term->curs.y > 0)
2737 term->curs.x = term->cols - 1, term->curs.y--;
2738 else if (term->wrapnext)
2739 term->wrapnext = FALSE;
2742 seen_disp_event(term);
2744 case '\016': /* LS1: Locking-shift one */
2745 compatibility(VT100);
2748 case '\017': /* LS0: Locking-shift zero */
2749 compatibility(VT100);
2752 case '\033': /* ESC: Escape */
2753 if (term->vt52_mode)
2754 term->termstate = VT52_ESC;
2756 compatibility(ANSIMIN);
2757 term->termstate = SEEN_ESC;
2758 term->esc_query = FALSE;
2761 case '\015': /* CR: Carriage return */
2763 term->wrapnext = FALSE;
2764 seen_disp_event(term);
2765 term->paste_hold = 0;
2767 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2769 case '\014': /* FF: Form feed */
2770 if (has_compat(SCOANSI)) {
2771 move(term, 0, 0, 0);
2772 erase_lots(term, FALSE, FALSE, TRUE);
2774 term->wrapnext = FALSE;
2775 seen_disp_event(term);
2778 case '\013': /* VT: Line tabulation */
2779 compatibility(VT100);
2780 case '\012': /* LF: Line feed */
2781 if (term->curs.y == term->marg_b)
2782 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2783 else if (term->curs.y < term->rows - 1)
2785 if (term->cfg.lfhascr)
2787 term->wrapnext = FALSE;
2788 seen_disp_event(term);
2789 term->paste_hold = 0;
2791 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2793 case '\t': /* HT: Character tabulation */
2795 pos old_curs = term->curs;
2796 termline *ldata = scrlineptr(term->curs.y);
2800 } while (term->curs.x < term->cols - 1 &&
2801 !term->tabs[term->curs.x]);
2803 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2804 if (term->curs.x >= term->cols / 2)
2805 term->curs.x = term->cols / 2 - 1;
2807 if (term->curs.x >= term->cols)
2808 term->curs.x = term->cols - 1;
2811 check_selection(term, old_curs, term->curs);
2813 seen_disp_event(term);
2817 switch (term->termstate) {
2819 /* Only graphic characters get this far;
2820 * ctrls are stripped above */
2822 termline *cline = scrlineptr(term->curs.y);
2827 width = wcwidth((wchar_t) c);
2829 if (term->wrapnext && term->wrap && width > 0) {
2830 cline->lattr |= LATTR_WRAPPED;
2831 if (term->curs.y == term->marg_b)
2832 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2833 else if (term->curs.y < term->rows - 1)
2836 term->wrapnext = FALSE;
2837 cline = scrlineptr(term->curs.y);
2839 if (term->insert && width > 0)
2841 if (term->selstate != NO_SELECTION) {
2842 pos cursplus = term->curs;
2844 check_selection(term, term->curs, cursplus);
2846 if (((c & CSET_MASK) == CSET_ASCII ||
2847 (c & CSET_MASK) == 0) &&
2849 logtraffic(term->logctx, (unsigned char) c,
2855 * If we're about to display a double-width
2856 * character starting in the rightmost
2857 * column, then we do something special
2858 * instead. We must print a space in the
2859 * last column of the screen, then wrap;
2860 * and we also set LATTR_WRAPPED2 which
2861 * instructs subsequent cut-and-pasting not
2862 * only to splice this line to the one
2863 * after it, but to ignore the space in the
2864 * last character position as well.
2865 * (Because what was actually output to the
2866 * terminal was presumably just a sequence
2867 * of CJK characters, and we don't want a
2868 * space to be pasted in the middle of
2869 * those just because they had the
2870 * misfortune to start in the wrong parity
2871 * column. xterm concurs.)
2873 check_boundary(term, term->curs.x, term->curs.y);
2874 check_boundary(term, term->curs.x+2, term->curs.y);
2875 if (term->curs.x == term->cols-1) {
2876 copy_termchar(cline, term->curs.x,
2878 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2879 if (term->curs.y == term->marg_b)
2880 scroll(term, term->marg_t, term->marg_b,
2882 else if (term->curs.y < term->rows - 1)
2885 /* Now we must check_boundary again, of course. */
2886 check_boundary(term, term->curs.x, term->curs.y);
2887 check_boundary(term, term->curs.x+2, term->curs.y);
2891 clear_cc(cline, term->curs.x);
2892 cline->chars[term->curs.x].chr = c;
2893 cline->chars[term->curs.x].attr = term->curr_attr;
2898 clear_cc(cline, term->curs.x);
2899 cline->chars[term->curs.x].chr = UCSWIDE;
2900 cline->chars[term->curs.x].attr = term->curr_attr;
2904 check_boundary(term, term->curs.x, term->curs.y);
2905 check_boundary(term, term->curs.x+1, term->curs.y);
2908 clear_cc(cline, term->curs.x);
2909 cline->chars[term->curs.x].chr = c;
2910 cline->chars[term->curs.x].attr = term->curr_attr;
2914 if (term->curs.x > 0) {
2915 int x = term->curs.x - 1;
2917 /* If we're in wrapnext state, the character
2918 * to combine with is _here_, not to our left. */
2923 * If the previous character is
2924 * UCSWIDE, back up another one.
2926 if (cline->chars[x].chr == UCSWIDE) {
2931 add_cc(cline, x, c);
2932 seen_disp_event(term);
2939 if (term->curs.x == term->cols) {
2941 term->wrapnext = TRUE;
2942 if (term->wrap && term->vt52_mode) {
2943 cline->lattr |= LATTR_WRAPPED;
2944 if (term->curs.y == term->marg_b)
2945 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2946 else if (term->curs.y < term->rows - 1)
2949 term->wrapnext = FALSE;
2952 seen_disp_event(term);
2958 * This state is virtually identical to SEEN_ESC, with the
2959 * exception that we have an OSC sequence in the pipeline,
2960 * and _if_ we see a backslash, we process it.
2964 term->termstate = TOPLEVEL;
2967 /* else fall through */
2969 if (c >= ' ' && c <= '/') {
2970 if (term->esc_query)
2971 term->esc_query = -1;
2973 term->esc_query = c;
2976 term->termstate = TOPLEVEL;
2977 switch (ANSI(c, term->esc_query)) {
2978 case '[': /* enter CSI mode */
2979 term->termstate = SEEN_CSI;
2980 term->esc_nargs = 1;
2981 term->esc_args[0] = ARG_DEFAULT;
2982 term->esc_query = FALSE;
2984 case ']': /* OSC: xterm escape sequences */
2985 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
2986 compatibility(OTHER);
2987 term->termstate = SEEN_OSC;
2988 term->esc_args[0] = 0;
2990 case '7': /* DECSC: save cursor */
2991 compatibility(VT100);
2992 save_cursor(term, TRUE);
2994 case '8': /* DECRC: restore cursor */
2995 compatibility(VT100);
2996 save_cursor(term, FALSE);
2997 seen_disp_event(term);
2999 case '=': /* DECKPAM: Keypad application mode */
3000 compatibility(VT100);
3001 term->app_keypad_keys = TRUE;
3003 case '>': /* DECKPNM: Keypad numeric mode */
3004 compatibility(VT100);
3005 term->app_keypad_keys = FALSE;
3007 case 'D': /* IND: exactly equivalent to LF */
3008 compatibility(VT100);
3009 if (term->curs.y == term->marg_b)
3010 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3011 else if (term->curs.y < term->rows - 1)
3013 term->wrapnext = FALSE;
3014 seen_disp_event(term);
3016 case 'E': /* NEL: exactly equivalent to CR-LF */
3017 compatibility(VT100);
3019 if (term->curs.y == term->marg_b)
3020 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3021 else if (term->curs.y < term->rows - 1)
3023 term->wrapnext = FALSE;
3024 seen_disp_event(term);
3026 case 'M': /* RI: reverse index - backwards LF */
3027 compatibility(VT100);
3028 if (term->curs.y == term->marg_t)
3029 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3030 else if (term->curs.y > 0)
3032 term->wrapnext = FALSE;
3033 seen_disp_event(term);
3035 case 'Z': /* DECID: terminal type query */
3036 compatibility(VT100);
3038 ldisc_send(term->ldisc, term->id_string,
3039 strlen(term->id_string), 0);
3041 case 'c': /* RIS: restore power-on settings */
3042 compatibility(VT100);
3044 if (term->ldisc) /* cause ldisc to notice changes */
3045 ldisc_send(term->ldisc, NULL, 0, 0);
3046 if (term->reset_132) {
3047 if (!term->cfg.no_remote_resize)
3048 request_resize(term->frontend, 80, term->rows);
3049 term->reset_132 = 0;
3052 seen_disp_event(term);
3054 case 'H': /* HTS: set a tab */
3055 compatibility(VT100);
3056 term->tabs[term->curs.x] = TRUE;
3059 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3060 compatibility(VT100);
3066 for (i = 0; i < term->rows; i++) {
3067 ldata = scrlineptr(i);
3068 for (j = 0; j < term->cols; j++) {
3069 copy_termchar(ldata, j,
3070 &term->basic_erase_char);
3071 ldata->chars[j].chr = 'E';
3073 ldata->lattr = LATTR_NORM;
3076 seen_disp_event(term);
3077 scrtop.x = scrtop.y = 0;
3079 scrbot.y = term->rows;
3080 check_selection(term, scrtop, scrbot);
3084 case ANSI('3', '#'):
3085 case ANSI('4', '#'):
3086 case ANSI('5', '#'):
3087 case ANSI('6', '#'):
3088 compatibility(VT100);
3092 switch (ANSI(c, term->esc_query)) {
3093 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3096 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3099 case ANSI('5', '#'): /* DECSWL: normal */
3100 nlattr = LATTR_NORM;
3102 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3103 nlattr = LATTR_WIDE;
3106 scrlineptr(term->curs.y)->lattr = nlattr;
3109 /* GZD4: G0 designate 94-set */
3110 case ANSI('A', '('):
3111 compatibility(VT100);
3112 if (!term->cfg.no_remote_charset)
3113 term->cset_attr[0] = CSET_GBCHR;
3115 case ANSI('B', '('):
3116 compatibility(VT100);
3117 if (!term->cfg.no_remote_charset)
3118 term->cset_attr[0] = CSET_ASCII;
3120 case ANSI('0', '('):
3121 compatibility(VT100);
3122 if (!term->cfg.no_remote_charset)
3123 term->cset_attr[0] = CSET_LINEDRW;
3125 case ANSI('U', '('):
3126 compatibility(OTHER);
3127 if (!term->cfg.no_remote_charset)
3128 term->cset_attr[0] = CSET_SCOACS;
3130 /* G1D4: G1-designate 94-set */
3131 case ANSI('A', ')'):
3132 compatibility(VT100);
3133 if (!term->cfg.no_remote_charset)
3134 term->cset_attr[1] = CSET_GBCHR;
3136 case ANSI('B', ')'):
3137 compatibility(VT100);
3138 if (!term->cfg.no_remote_charset)
3139 term->cset_attr[1] = CSET_ASCII;
3141 case ANSI('0', ')'):
3142 compatibility(VT100);
3143 if (!term->cfg.no_remote_charset)
3144 term->cset_attr[1] = CSET_LINEDRW;
3146 case ANSI('U', ')'):
3147 compatibility(OTHER);
3148 if (!term->cfg.no_remote_charset)
3149 term->cset_attr[1] = CSET_SCOACS;
3151 /* DOCS: Designate other coding system */
3152 case ANSI('8', '%'): /* Old Linux code */
3153 case ANSI('G', '%'):
3154 compatibility(OTHER);
3155 if (!term->cfg.no_remote_charset)
3158 case ANSI('@', '%'):
3159 compatibility(OTHER);
3160 if (!term->cfg.no_remote_charset)
3166 term->termstate = TOPLEVEL; /* default */
3168 if (term->esc_nargs <= ARGS_MAX) {
3169 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3170 term->esc_args[term->esc_nargs - 1] = 0;
3171 term->esc_args[term->esc_nargs - 1] =
3172 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3174 term->termstate = SEEN_CSI;
3175 } else if (c == ';') {
3176 if (++term->esc_nargs <= ARGS_MAX)
3177 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3178 term->termstate = SEEN_CSI;
3179 } else if (c < '@') {
3180 if (term->esc_query)
3181 term->esc_query = -1;
3183 term->esc_query = TRUE;
3185 term->esc_query = c;
3186 term->termstate = SEEN_CSI;
3188 switch (ANSI(c, term->esc_query)) {
3189 case 'A': /* CUU: move up N lines */
3190 move(term, term->curs.x,
3191 term->curs.y - def(term->esc_args[0], 1), 1);
3192 seen_disp_event(term);
3194 case 'e': /* VPR: move down N lines */
3195 compatibility(ANSI);
3197 case 'B': /* CUD: Cursor down */
3198 move(term, term->curs.x,
3199 term->curs.y + def(term->esc_args[0], 1), 1);
3200 seen_disp_event(term);
3202 case ANSI('c', '>'): /* DA: report xterm version */
3203 compatibility(OTHER);
3204 /* this reports xterm version 136 so that VIM can
3205 use the drag messages from the mouse reporting */
3207 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3209 case 'a': /* HPR: move right N cols */
3210 compatibility(ANSI);
3212 case 'C': /* CUF: Cursor right */
3213 move(term, term->curs.x + def(term->esc_args[0], 1),
3215 seen_disp_event(term);
3217 case 'D': /* CUB: move left N cols */
3218 move(term, term->curs.x - def(term->esc_args[0], 1),
3220 seen_disp_event(term);
3222 case 'E': /* CNL: move down N lines and CR */
3223 compatibility(ANSI);
3225 term->curs.y + def(term->esc_args[0], 1), 1);
3226 seen_disp_event(term);
3228 case 'F': /* CPL: move up N lines and CR */
3229 compatibility(ANSI);
3231 term->curs.y - def(term->esc_args[0], 1), 1);
3232 seen_disp_event(term);
3235 case '`': /* HPA: set horizontal posn */
3236 compatibility(ANSI);
3237 move(term, def(term->esc_args[0], 1) - 1,
3239 seen_disp_event(term);
3241 case 'd': /* VPA: set vertical posn */
3242 compatibility(ANSI);
3243 move(term, term->curs.x,
3244 ((term->dec_om ? term->marg_t : 0) +
3245 def(term->esc_args[0], 1) - 1),
3246 (term->dec_om ? 2 : 0));
3247 seen_disp_event(term);
3250 case 'f': /* HVP: set horz and vert posns at once */
3251 if (term->esc_nargs < 2)
3252 term->esc_args[1] = ARG_DEFAULT;
3253 move(term, def(term->esc_args[1], 1) - 1,
3254 ((term->dec_om ? term->marg_t : 0) +
3255 def(term->esc_args[0], 1) - 1),
3256 (term->dec_om ? 2 : 0));
3257 seen_disp_event(term);
3259 case 'J': /* ED: erase screen or parts of it */
3261 unsigned int i = def(term->esc_args[0], 0) + 1;
3264 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3267 seen_disp_event(term);
3269 case 'K': /* EL: erase line or parts of it */
3271 unsigned int i = def(term->esc_args[0], 0) + 1;
3274 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3276 seen_disp_event(term);
3278 case 'L': /* IL: insert lines */
3279 compatibility(VT102);
3280 if (term->curs.y <= term->marg_b)
3281 scroll(term, term->curs.y, term->marg_b,
3282 -def(term->esc_args[0], 1), FALSE);
3283 seen_disp_event(term);
3285 case 'M': /* DL: delete lines */
3286 compatibility(VT102);
3287 if (term->curs.y <= term->marg_b)
3288 scroll(term, term->curs.y, term->marg_b,
3289 def(term->esc_args[0], 1),
3291 seen_disp_event(term);
3293 case '@': /* ICH: insert chars */
3294 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3295 compatibility(VT102);
3296 insch(term, def(term->esc_args[0], 1));
3297 seen_disp_event(term);
3299 case 'P': /* DCH: delete chars */
3300 compatibility(VT102);
3301 insch(term, -def(term->esc_args[0], 1));
3302 seen_disp_event(term);
3304 case 'c': /* DA: terminal type query */
3305 compatibility(VT100);
3306 /* This is the response for a VT102 */
3308 ldisc_send(term->ldisc, term->id_string,
3309 strlen(term->id_string), 0);
3311 case 'n': /* DSR: cursor position query */
3313 if (term->esc_args[0] == 6) {
3315 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3317 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3318 } else if (term->esc_args[0] == 5) {
3319 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3323 case 'h': /* SM: toggle modes to high */
3325 compatibility(VT100);
3328 for (i = 0; i < term->esc_nargs; i++)
3329 toggle_mode(term, term->esc_args[i],
3330 term->esc_query, TRUE);
3333 case 'i': /* MC: Media copy */
3335 compatibility(VT100);
3337 if (term->esc_nargs != 1) break;
3338 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3339 term->printing = TRUE;
3340 term->only_printing = !term->esc_query;
3341 term->print_state = 0;
3342 term_print_setup(term);
3343 } else if (term->esc_args[0] == 4 &&
3345 term_print_finish(term);
3349 case 'l': /* RM: toggle modes to low */
3351 compatibility(VT100);
3354 for (i = 0; i < term->esc_nargs; i++)
3355 toggle_mode(term, term->esc_args[i],
3356 term->esc_query, FALSE);
3359 case 'g': /* TBC: clear tabs */
3360 compatibility(VT100);
3361 if (term->esc_nargs == 1) {
3362 if (term->esc_args[0] == 0) {
3363 term->tabs[term->curs.x] = FALSE;
3364 } else if (term->esc_args[0] == 3) {
3366 for (i = 0; i < term->cols; i++)
3367 term->tabs[i] = FALSE;
3371 case 'r': /* DECSTBM: set scroll margins */
3372 compatibility(VT100);
3373 if (term->esc_nargs <= 2) {
3375 top = def(term->esc_args[0], 1) - 1;
3376 bot = (term->esc_nargs <= 1
3377 || term->esc_args[1] == 0 ?
3379 def(term->esc_args[1], term->rows)) - 1;
3380 if (bot >= term->rows)
3381 bot = term->rows - 1;
3382 /* VTTEST Bug 9 - if region is less than 2 lines
3383 * don't change region.
3385 if (bot - top > 0) {
3390 * I used to think the cursor should be
3391 * placed at the top of the newly marginned
3392 * area. Apparently not: VMS TPU falls over
3395 * Well actually it should for
3398 term->curs.y = (term->dec_om ?
3400 seen_disp_event(term);
3404 case 'm': /* SGR: set graphics rendition */
3407 * A VT100 without the AVO only had one
3408 * attribute, either underline or
3409 * reverse video depending on the
3410 * cursor type, this was selected by
3414 * This is sometimes DIM, eg on the
3417 * This is sometimes INVIS various ANSI.
3419 * This like 22 disables BOLD, DIM and INVIS
3421 * The ANSI colours appear on any
3422 * terminal that has colour (obviously)
3423 * but the interaction between sgr0 and
3424 * the colours varies but is usually
3425 * related to the background colour
3426 * erase item. The interaction between
3427 * colour attributes and the mono ones
3428 * is also very implementation
3431 * The 39 and 49 attributes are likely
3432 * to be unimplemented.
3435 for (i = 0; i < term->esc_nargs; i++) {
3436 switch (def(term->esc_args[i], 0)) {
3437 case 0: /* restore defaults */
3438 term->curr_attr = term->default_attr;
3440 case 1: /* enable bold */
3441 compatibility(VT100AVO);
3442 term->curr_attr |= ATTR_BOLD;
3444 case 21: /* (enable double underline) */
3445 compatibility(OTHER);
3446 case 4: /* enable underline */
3447 compatibility(VT100AVO);
3448 term->curr_attr |= ATTR_UNDER;
3450 case 5: /* enable blink */
3451 compatibility(VT100AVO);
3452 term->curr_attr |= ATTR_BLINK;
3454 case 6: /* SCO light bkgrd */
3455 compatibility(SCOANSI);
3456 term->blink_is_real = FALSE;
3457 term->curr_attr |= ATTR_BLINK;
3458 term_schedule_tblink(term);
3460 case 7: /* enable reverse video */
3461 term->curr_attr |= ATTR_REVERSE;
3463 case 10: /* SCO acs off */
3464 compatibility(SCOANSI);
3465 if (term->cfg.no_remote_charset) break;
3466 term->sco_acs = 0; break;
3467 case 11: /* SCO acs on */
3468 compatibility(SCOANSI);
3469 if (term->cfg.no_remote_charset) break;
3470 term->sco_acs = 1; break;
3471 case 12: /* SCO acs on, |0x80 */
3472 compatibility(SCOANSI);
3473 if (term->cfg.no_remote_charset) break;
3474 term->sco_acs = 2; break;
3475 case 22: /* disable bold */
3476 compatibility2(OTHER, VT220);
3477 term->curr_attr &= ~ATTR_BOLD;
3479 case 24: /* disable underline */
3480 compatibility2(OTHER, VT220);
3481 term->curr_attr &= ~ATTR_UNDER;
3483 case 25: /* disable blink */
3484 compatibility2(OTHER, VT220);
3485 term->curr_attr &= ~ATTR_BLINK;
3487 case 27: /* disable reverse video */
3488 compatibility2(OTHER, VT220);
3489 term->curr_attr &= ~ATTR_REVERSE;
3500 term->curr_attr &= ~ATTR_FGMASK;
3502 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3512 /* xterm-style bright foreground */
3513 term->curr_attr &= ~ATTR_FGMASK;
3515 ((term->esc_args[i] - 90 + 8)
3518 case 39: /* default-foreground */
3519 term->curr_attr &= ~ATTR_FGMASK;
3520 term->curr_attr |= ATTR_DEFFG;
3531 term->curr_attr &= ~ATTR_BGMASK;
3533 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3543 /* xterm-style bright background */
3544 term->curr_attr &= ~ATTR_BGMASK;
3546 ((term->esc_args[i] - 100 + 8)
3549 case 49: /* default-background */
3550 term->curr_attr &= ~ATTR_BGMASK;
3551 term->curr_attr |= ATTR_DEFBG;
3553 case 38: /* xterm 256-colour mode */
3554 if (i+2 < term->esc_nargs &&
3555 term->esc_args[i+1] == 5) {
3556 term->curr_attr &= ~ATTR_FGMASK;
3558 ((term->esc_args[i+2] & 0xFF)
3563 case 48: /* xterm 256-colour mode */
3564 if (i+2 < term->esc_nargs &&
3565 term->esc_args[i+1] == 5) {
3566 term->curr_attr &= ~ATTR_BGMASK;
3568 ((term->esc_args[i+2] & 0xFF)
3575 set_erase_char(term);
3578 case 's': /* save cursor */
3579 save_cursor(term, TRUE);
3581 case 'u': /* restore cursor */
3582 save_cursor(term, FALSE);
3583 seen_disp_event(term);
3585 case 't': /* DECSLPP: set page size - ie window height */
3587 * VT340/VT420 sequence DECSLPP, DEC only allows values
3588 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3589 * illegal values (eg first arg 1..9) for window changing
3592 if (term->esc_nargs <= 1
3593 && (term->esc_args[0] < 1 ||
3594 term->esc_args[0] >= 24)) {
3595 compatibility(VT340TEXT);
3596 if (!term->cfg.no_remote_resize)
3597 request_resize(term->frontend, term->cols,
3598 def(term->esc_args[0], 24));
3600 } else if (term->esc_nargs >= 1 &&
3601 term->esc_args[0] >= 1 &&
3602 term->esc_args[0] < 24) {
3603 compatibility(OTHER);
3605 switch (term->esc_args[0]) {
3609 set_iconic(term->frontend, FALSE);
3612 set_iconic(term->frontend, TRUE);
3615 if (term->esc_nargs >= 3) {
3616 if (!term->cfg.no_remote_resize)
3617 move_window(term->frontend,
3618 def(term->esc_args[1], 0),
3619 def(term->esc_args[2], 0));
3623 /* We should resize the window to a given
3624 * size in pixels here, but currently our
3625 * resizing code isn't healthy enough to
3630 set_zorder(term->frontend, TRUE);
3633 /* move to bottom */
3634 set_zorder(term->frontend, FALSE);
3637 refresh_window(term->frontend);
3640 if (term->esc_nargs >= 3) {
3641 if (!term->cfg.no_remote_resize)
3642 request_resize(term->frontend,
3643 def(term->esc_args[2], term->cfg.width),
3644 def(term->esc_args[1], term->cfg.height));
3648 if (term->esc_nargs >= 2)
3649 set_zoomed(term->frontend,
3655 ldisc_send(term->ldisc,
3656 is_iconic(term->frontend) ?
3657 "\033[1t" : "\033[2t", 4, 0);
3661 get_window_pos(term->frontend, &x, &y);
3662 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3663 ldisc_send(term->ldisc, buf, len, 0);
3668 get_window_pixels(term->frontend, &x, &y);
3669 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3670 ldisc_send(term->ldisc, buf, len, 0);
3675 len = sprintf(buf, "\033[8;%d;%dt",
3676 term->rows, term->cols);
3677 ldisc_send(term->ldisc, buf, len, 0);
3682 * Hmmm. Strictly speaking we
3683 * should return `the size of the
3684 * screen in characters', but
3685 * that's not easy: (a) window
3686 * furniture being what it is it's
3687 * hard to compute, and (b) in
3688 * resize-font mode maximising the
3689 * window wouldn't change the
3690 * number of characters. *shrug*. I
3691 * think we'll ignore it for the
3692 * moment and see if anyone
3693 * complains, and then ask them
3694 * what they would like it to do.
3699 !term->cfg.no_remote_qtitle) {
3700 p = get_window_title(term->frontend, TRUE);
3702 ldisc_send(term->ldisc, "\033]L", 3, 0);
3703 ldisc_send(term->ldisc, p, len, 0);
3704 ldisc_send(term->ldisc, "\033\\", 2, 0);
3709 !term->cfg.no_remote_qtitle) {
3710 p = get_window_title(term->frontend,FALSE);
3712 ldisc_send(term->ldisc, "\033]l", 3, 0);
3713 ldisc_send(term->ldisc, p, len, 0);
3714 ldisc_send(term->ldisc, "\033\\", 2, 0);
3720 case 'S': /* SU: Scroll up */
3721 compatibility(SCOANSI);
3722 scroll(term, term->marg_t, term->marg_b,
3723 def(term->esc_args[0], 1), TRUE);
3724 term->wrapnext = FALSE;
3725 seen_disp_event(term);
3727 case 'T': /* SD: Scroll down */
3728 compatibility(SCOANSI);
3729 scroll(term, term->marg_t, term->marg_b,
3730 -def(term->esc_args[0], 1), TRUE);
3731 term->wrapnext = FALSE;
3732 seen_disp_event(term);
3734 case ANSI('|', '*'): /* DECSNLS */
3736 * Set number of lines on screen
3737 * VT420 uses VGA like hardware and can
3738 * support any size in reasonable range
3739 * (24..49 AIUI) with no default specified.
3741 compatibility(VT420);
3742 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3743 if (!term->cfg.no_remote_resize)
3744 request_resize(term->frontend, term->cols,
3745 def(term->esc_args[0],
3750 case ANSI('|', '$'): /* DECSCPP */
3752 * Set number of columns per page
3753 * Docs imply range is only 80 or 132, but
3756 compatibility(VT340TEXT);
3757 if (term->esc_nargs <= 1) {
3758 if (!term->cfg.no_remote_resize)
3759 request_resize(term->frontend,
3760 def(term->esc_args[0],
3761 term->cfg.width), term->rows);
3765 case 'X': /* ECH: write N spaces w/o moving cursor */
3766 /* XXX VTTEST says this is vt220, vt510 manual
3768 compatibility(ANSIMIN);
3770 int n = def(term->esc_args[0], 1);
3772 int p = term->curs.x;
3773 termline *cline = scrlineptr(term->curs.y);
3775 if (n > term->cols - term->curs.x)
3776 n = term->cols - term->curs.x;
3777 cursplus = term->curs;
3779 check_boundary(term, term->curs.x, term->curs.y);
3780 check_boundary(term, term->curs.x+n, term->curs.y);
3781 check_selection(term, term->curs, cursplus);
3783 copy_termchar(cline, p++,
3785 seen_disp_event(term);
3788 case 'x': /* DECREQTPARM: report terminal characteristics */
3789 compatibility(VT100);
3792 int i = def(term->esc_args[0], 0);
3793 if (i == 0 || i == 1) {
3794 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3796 ldisc_send(term->ldisc, buf, 20, 0);
3800 case 'Z': /* CBT: BackTab for xterm */
3801 compatibility(OTHER);
3803 int i = def(term->esc_args[0], 1);
3804 pos old_curs = term->curs;
3806 for(;i>0 && term->curs.x>0; i--) {
3809 } while (term->curs.x >0 &&
3810 !term->tabs[term->curs.x]);
3812 check_selection(term, old_curs, term->curs);
3815 case ANSI('c', '='): /* Hide or Show Cursor */
3816 compatibility(SCOANSI);
3817 switch(term->esc_args[0]) {
3818 case 0: /* hide cursor */
3819 term->cursor_on = FALSE;
3821 case 1: /* restore cursor */
3822 term->big_cursor = FALSE;
3823 term->cursor_on = TRUE;
3825 case 2: /* block cursor */
3826 term->big_cursor = TRUE;
3827 term->cursor_on = TRUE;
3831 case ANSI('C', '='):
3833 * set cursor start on scanline esc_args[0] and
3834 * end on scanline esc_args[1].If you set
3835 * the bottom scan line to a value less than
3836 * the top scan line, the cursor will disappear.
3838 compatibility(SCOANSI);
3839 if (term->esc_nargs >= 2) {
3840 if (term->esc_args[0] > term->esc_args[1])
3841 term->cursor_on = FALSE;
3843 term->cursor_on = TRUE;
3846 case ANSI('D', '='):
3847 compatibility(SCOANSI);
3848 term->blink_is_real = FALSE;
3849 term_schedule_tblink(term);
3850 if (term->esc_args[0]>=1)
3851 term->curr_attr |= ATTR_BLINK;
3853 term->curr_attr &= ~ATTR_BLINK;
3855 case ANSI('E', '='):
3856 compatibility(SCOANSI);
3857 term->blink_is_real = (term->esc_args[0] >= 1);
3858 term_schedule_tblink(term);
3860 case ANSI('F', '='): /* set normal foreground */
3861 compatibility(SCOANSI);
3862 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3864 (sco2ansicolour[term->esc_args[0] & 0x7] |
3865 (term->esc_args[0] & 0x8)) <<
3867 term->curr_attr &= ~ATTR_FGMASK;
3868 term->curr_attr |= colour;
3869 term->default_attr &= ~ATTR_FGMASK;
3870 term->default_attr |= colour;
3873 case ANSI('G', '='): /* set normal background */
3874 compatibility(SCOANSI);
3875 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3877 (sco2ansicolour[term->esc_args[0] & 0x7] |
3878 (term->esc_args[0] & 0x8)) <<
3880 term->curr_attr &= ~ATTR_BGMASK;
3881 term->curr_attr |= colour;
3882 term->default_attr &= ~ATTR_BGMASK;
3883 term->default_attr |= colour;
3886 case ANSI('L', '='):
3887 compatibility(SCOANSI);
3888 term->use_bce = (term->esc_args[0] <= 0);
3889 set_erase_char(term);
3891 case ANSI('p', '"'): /* DECSCL: set compat level */
3893 * Allow the host to make this emulator a
3894 * 'perfect' VT102. This first appeared in
3895 * the VT220, but we do need to get back to
3896 * PuTTY mode so I won't check it.
3898 * The arg in 40..42,50 are a PuTTY extension.
3899 * The 2nd arg, 8bit vs 7bit is not checked.
3901 * Setting VT102 mode should also change
3902 * the Fkeys to generate PF* codes as a
3903 * real VT102 has no Fkeys. The VT220 does
3904 * this, F11..F13 become ESC,BS,LF other
3905 * Fkeys send nothing.
3907 * Note ESC c will NOT change this!
3910 switch (term->esc_args[0]) {
3912 term->compatibility_level &= ~TM_VTXXX;
3913 term->compatibility_level |= TM_VT102;
3916 term->compatibility_level &= ~TM_VTXXX;
3917 term->compatibility_level |= TM_VT220;
3921 if (term->esc_args[0] > 60 &&
3922 term->esc_args[0] < 70)
3923 term->compatibility_level |= TM_VTXXX;
3927 term->compatibility_level &= TM_VTXXX;
3930 term->compatibility_level = TM_PUTTY;
3933 term->compatibility_level = TM_SCOANSI;
3937 term->compatibility_level = TM_PUTTY;
3943 /* Change the response to CSI c */
3944 if (term->esc_args[0] == 50) {
3947 strcpy(term->id_string, "\033[?");
3948 for (i = 1; i < term->esc_nargs; i++) {
3950 strcat(term->id_string, ";");
3951 sprintf(lbuf, "%d", term->esc_args[i]);
3952 strcat(term->id_string, lbuf);
3954 strcat(term->id_string, "c");
3957 /* Is this a good idea ?
3958 * Well we should do a soft reset at this point ...
3960 if (!has_compat(VT420) && has_compat(VT100)) {
3961 if (!term->cfg.no_remote_resize) {
3962 if (term->reset_132)
3963 request_resize(132, 24);
3965 request_resize(80, 24);
3973 term->osc_w = FALSE;
3975 case 'P': /* Linux palette sequence */
3976 term->termstate = SEEN_OSC_P;
3977 term->osc_strlen = 0;
3979 case 'R': /* Linux palette reset */
3980 palette_reset(term->frontend);
3981 term_invalidate(term);
3982 term->termstate = TOPLEVEL;
3984 case 'W': /* word-set */
3985 term->termstate = SEEN_OSC_W;
3998 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4002 * Grotty hack to support xterm and DECterm title
4003 * sequences concurrently.
4005 if (term->esc_args[0] == 2) {
4006 term->esc_args[0] = 1;
4009 /* else fall through */
4011 term->termstate = OSC_STRING;
4012 term->osc_strlen = 0;
4017 * This OSC stuff is EVIL. It takes just one character to get into
4018 * sysline mode and it's not initially obvious how to get out.
4019 * So I've added CR and LF as string aborts.
4020 * This shouldn't effect compatibility as I believe embedded
4021 * control characters are supposed to be interpreted (maybe?)
4022 * and they don't display anything useful anyway.
4026 if (c == '\012' || c == '\015') {
4027 term->termstate = TOPLEVEL;
4028 } else if (c == 0234 || c == '\007') {
4030 * These characters terminate the string; ST and BEL
4031 * terminate the sequence and trigger instant
4032 * processing of it, whereas ESC goes back to SEEN_ESC
4033 * mode unless it is followed by \, in which case it is
4034 * synonymous with ST in the first place.
4037 term->termstate = TOPLEVEL;
4038 } else if (c == '\033')
4039 term->termstate = OSC_MAYBE_ST;
4040 else if (term->osc_strlen < OSC_STR_MAX)
4041 term->osc_string[term->osc_strlen++] = (char)c;
4045 int max = (term->osc_strlen == 0 ? 21 : 16);
4047 if ((int)c >= '0' && (int)c <= '9')
4049 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4051 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4054 term->termstate = TOPLEVEL;
4057 term->osc_string[term->osc_strlen++] = val;
4058 if (term->osc_strlen >= 7) {
4059 palette_set(term->frontend, term->osc_string[0],
4060 term->osc_string[1] * 16 + term->osc_string[2],
4061 term->osc_string[3] * 16 + term->osc_string[4],
4062 term->osc_string[5] * 16 + term->osc_string[6]);
4063 term_invalidate(term);
4064 term->termstate = TOPLEVEL;
4080 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4083 term->termstate = OSC_STRING;
4084 term->osc_strlen = 0;
4088 term->termstate = TOPLEVEL;
4089 seen_disp_event(term);
4092 move(term, term->curs.x, term->curs.y - 1, 1);
4095 move(term, term->curs.x, term->curs.y + 1, 1);
4098 move(term, term->curs.x + 1, term->curs.y, 1);
4101 move(term, term->curs.x - 1, term->curs.y, 1);
4104 * From the VT100 Manual
4105 * NOTE: The special graphics characters in the VT100
4106 * are different from those in the VT52
4108 * From VT102 manual:
4109 * 137 _ Blank - Same
4110 * 140 ` Reserved - Humm.
4111 * 141 a Solid rectangle - Similar
4112 * 142 b 1/ - Top half of fraction for the
4113 * 143 c 3/ - subscript numbers below.
4116 * 146 f Degrees - Same
4117 * 147 g Plus or minus - Same
4119 * 151 i Ellipsis (dots)
4122 * 154 l Bar at scan 0
4123 * 155 m Bar at scan 1
4124 * 156 n Bar at scan 2
4125 * 157 o Bar at scan 3 - Similar
4126 * 160 p Bar at scan 4 - Similar
4127 * 161 q Bar at scan 5 - Similar
4128 * 162 r Bar at scan 6 - Same
4129 * 163 s Bar at scan 7 - Similar
4144 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4147 term->cset_attr[term->cset = 0] = CSET_ASCII;
4150 move(term, 0, 0, 0);
4153 if (term->curs.y == 0)
4154 scroll(term, 0, term->rows - 1, -1, TRUE);
4155 else if (term->curs.y > 0)
4157 term->wrapnext = FALSE;
4160 erase_lots(term, FALSE, FALSE, TRUE);
4164 erase_lots(term, TRUE, FALSE, TRUE);
4168 /* XXX Print cursor line */
4171 /* XXX Start controller mode */
4174 /* XXX Stop controller mode */
4178 term->termstate = VT52_Y1;
4182 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4185 term->app_keypad_keys = TRUE;
4188 term->app_keypad_keys = FALSE;
4191 /* XXX This should switch to VT100 mode not current or default
4192 * VT mode. But this will only have effect in a VT220+
4195 term->vt52_mode = FALSE;
4196 term->blink_is_real = term->cfg.blinktext;
4197 term_schedule_tblink(term);
4201 /* XXX Enter auto print mode */
4204 /* XXX Exit auto print mode */
4207 /* XXX Print screen */
4213 /* compatibility(ATARI) */
4214 move(term, 0, 0, 0);
4215 erase_lots(term, FALSE, FALSE, TRUE);
4219 /* compatibility(ATARI) */
4220 if (term->curs.y <= term->marg_b)
4221 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4224 /* compatibility(ATARI) */
4225 if (term->curs.y <= term->marg_b)
4226 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4229 /* compatibility(ATARI) */
4230 term->termstate = VT52_FG;
4233 /* compatibility(ATARI) */
4234 term->termstate = VT52_BG;
4237 /* compatibility(ATARI) */
4238 erase_lots(term, FALSE, TRUE, FALSE);
4242 /* compatibility(ATARI) */
4243 term->cursor_on = TRUE;
4246 /* compatibility(ATARI) */
4247 term->cursor_on = FALSE;
4249 /* case 'j': Save cursor position - broken on ST */
4250 /* case 'k': Restore cursor position */
4252 /* compatibility(ATARI) */
4253 erase_lots(term, TRUE, TRUE, TRUE);
4255 term->wrapnext = FALSE;
4258 /* compatibility(ATARI) */
4259 erase_lots(term, TRUE, TRUE, FALSE);
4262 /* compatibility(ATARI) */
4263 term->curr_attr |= ATTR_REVERSE;
4266 /* compatibility(ATARI) */
4267 term->curr_attr &= ~ATTR_REVERSE;
4269 case 'v': /* wrap Autowrap on - Wyse style */
4270 /* compatibility(ATARI) */
4273 case 'w': /* Autowrap off */
4274 /* compatibility(ATARI) */
4279 /* compatibility(OTHER) */
4280 term->vt52_bold = FALSE;
4281 term->curr_attr = ATTR_DEFAULT;
4282 set_erase_char(term);
4285 /* compatibility(VI50) */
4286 term->curr_attr |= ATTR_UNDER;
4289 /* compatibility(VI50) */
4290 term->curr_attr &= ~ATTR_UNDER;
4293 /* compatibility(VI50) */
4294 term->vt52_bold = TRUE;
4295 term->curr_attr |= ATTR_BOLD;
4298 /* compatibility(VI50) */
4299 term->vt52_bold = FALSE;
4300 term->curr_attr &= ~ATTR_BOLD;
4306 term->termstate = VT52_Y2;
4307 move(term, term->curs.x, c - ' ', 0);
4310 term->termstate = TOPLEVEL;
4311 move(term, c - ' ', term->curs.y, 0);
4316 term->termstate = TOPLEVEL;
4317 term->curr_attr &= ~ATTR_FGMASK;
4318 term->curr_attr &= ~ATTR_BOLD;
4319 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4320 set_erase_char(term);
4323 term->termstate = TOPLEVEL;
4324 term->curr_attr &= ~ATTR_BGMASK;
4325 term->curr_attr &= ~ATTR_BLINK;
4326 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4327 set_erase_char(term);
4330 default: break; /* placate gcc warning about enum use */
4332 if (term->selstate != NO_SELECTION) {
4333 pos cursplus = term->curs;
4335 check_selection(term, term->curs, cursplus);
4339 term_print_flush(term);
4340 logflush(term->logctx);
4344 * To prevent having to run the reasonably tricky bidi algorithm
4345 * too many times, we maintain a cache of the last lineful of data
4346 * fed to the algorithm on each line of the display.
4348 static int term_bidi_cache_hit(Terminal *term, int line,
4349 termchar *lbefore, int width)
4353 if (!term->pre_bidi_cache)
4354 return FALSE; /* cache doesn't even exist yet! */
4356 if (line >= term->bidi_cache_size)
4357 return FALSE; /* cache doesn't have this many lines */
4359 if (!term->pre_bidi_cache[line].chars)
4360 return FALSE; /* cache doesn't contain _this_ line */
4362 if (term->pre_bidi_cache[line].width != width)
4363 return FALSE; /* line is wrong width */
4365 for (i = 0; i < width; i++)
4366 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4367 return FALSE; /* line doesn't match cache */
4369 return TRUE; /* it didn't match. */
4372 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4373 termchar *lafter, bidi_char *wcTo,
4374 int width, int size)
4378 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4379 int j = term->bidi_cache_size;
4380 term->bidi_cache_size = line+1;
4381 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4382 term->bidi_cache_size,
4383 struct bidi_cache_entry);
4384 term->post_bidi_cache = sresize(term->post_bidi_cache,
4385 term->bidi_cache_size,
4386 struct bidi_cache_entry);
4387 while (j < term->bidi_cache_size) {
4388 term->pre_bidi_cache[j].chars =
4389 term->post_bidi_cache[j].chars = NULL;
4390 term->pre_bidi_cache[j].width =
4391 term->post_bidi_cache[j].width = -1;
4392 term->pre_bidi_cache[j].forward =
4393 term->post_bidi_cache[j].forward = NULL;
4394 term->pre_bidi_cache[j].backward =
4395 term->post_bidi_cache[j].backward = NULL;
4400 sfree(term->pre_bidi_cache[line].chars);
4401 sfree(term->post_bidi_cache[line].chars);
4402 sfree(term->post_bidi_cache[line].forward);
4403 sfree(term->post_bidi_cache[line].backward);
4405 term->pre_bidi_cache[line].width = width;
4406 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4407 term->post_bidi_cache[line].width = width;
4408 term->post_bidi_cache[line].chars = snewn(size, termchar);
4409 term->post_bidi_cache[line].forward = snewn(width, int);
4410 term->post_bidi_cache[line].backward = snewn(width, int);
4412 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4413 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4414 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4415 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4417 for (i = 0; i < width; i++) {
4418 int p = wcTo[i].index;
4420 assert(0 <= p && p < width);
4422 term->post_bidi_cache[line].backward[i] = p;
4423 term->post_bidi_cache[line].forward[p] = i;
4428 * Prepare the bidi information for a screen line. Returns the
4429 * transformed list of termchars, or NULL if no transformation at
4430 * all took place (because bidi is disabled). If return was
4431 * non-NULL, auxiliary information such as the forward and reverse
4432 * mappings of permutation position are available in
4433 * term->post_bidi_cache[scr_y].*.
4435 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4441 /* Do Arabic shaping and bidi. */
4442 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4444 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4446 if (term->wcFromTo_size < term->cols) {
4447 term->wcFromTo_size = term->cols;
4448 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4450 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4454 for(it=0; it<term->cols ; it++)
4456 unsigned long uc = (ldata->chars[it].chr);
4458 switch (uc & CSET_MASK) {
4460 if (!term->cfg.rawcnp) {
4461 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4465 uc = term->ucsdata->unitab_line[uc & 0xFF];
4468 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4471 switch (uc & CSET_MASK) {
4473 uc = term->ucsdata->unitab_font[uc & 0xFF];
4476 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4480 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4482 term->wcFrom[it].index = it;
4486 do_bidi(term->wcFrom, term->cols);
4488 /* this is saved iff done from inside the shaping */
4489 if(!term->cfg.bidi && term->cfg.arabicshaping)
4490 for(it=0; it<term->cols; it++)
4491 term->wcTo[it] = term->wcFrom[it];
4493 if(!term->cfg.arabicshaping)
4494 do_shape(term->wcFrom, term->wcTo, term->cols);
4496 if (term->ltemp_size < ldata->size) {
4497 term->ltemp_size = ldata->size;
4498 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4502 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4504 for(it=0; it<term->cols ; it++)
4506 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4507 if (term->ltemp[it].cc_next)
4508 term->ltemp[it].cc_next -=
4509 it - term->wcTo[it].index;
4511 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4512 term->ltemp[it].chr = term->wcTo[it].wc;
4514 term_bidi_cache_store(term, scr_y, ldata->chars,
4515 term->ltemp, term->wcTo,
4516 term->cols, ldata->size);
4518 lchars = term->ltemp;
4520 lchars = term->post_bidi_cache[scr_y].chars;
4530 * Given a context, update the window. Out of paranoia, we don't
4531 * allow WM_PAINT responses to do scrolling optimisations.
4533 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4535 int i, j, our_curs_y, our_curs_x;
4540 termchar cursor_background;
4541 #ifdef OPTIMISE_SCROLL
4542 struct scrollregion *sr;
4543 #endif /* OPTIMISE_SCROLL */
4545 cursor_background = term->basic_erase_char;
4548 ch = snewn(chlen, wchar_t);
4550 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4553 * screen array, disptop, scrtop,
4555 * cfg.blinkpc, blink_is_real, tblinker,
4556 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4559 /* Has the cursor position or type changed ? */
4560 if (term->cursor_on) {
4561 if (term->has_focus) {
4562 if (term->cblinker || !term->cfg.blink_cur)
4563 cursor = TATTR_ACTCURS;
4567 cursor = TATTR_PASCURS;
4569 cursor |= TATTR_RIGHTCURS;
4572 our_curs_y = term->curs.y - term->disptop;
4575 * Adjust the cursor position:
4577 * - in the case where it's resting on the right-hand half
4578 * of a CJK wide character. xterm's behaviour here,
4579 * which seems adequate to me, is to display the cursor
4580 * covering the _whole_ character, exactly as if it were
4581 * one space to the left.
4583 termline *ldata = lineptr(term->curs.y);
4586 our_curs_x = term->curs.x;
4588 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4589 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4591 lchars = ldata->chars;
4593 if (our_curs_x > 0 &&
4594 lchars[our_curs_x].chr == UCSWIDE)
4601 * If the cursor is not where it was last time we painted, and
4602 * its previous position is visible on screen, invalidate its
4603 * previous position.
4605 if (term->dispcursy >= 0 &&
4606 (term->curstype != cursor ||
4607 term->dispcursy != our_curs_y ||
4608 term->dispcursx != our_curs_x)) {
4609 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4612 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4613 dispcurs[-1].attr |= ATTR_INVALID;
4614 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4615 dispcurs[1].attr |= ATTR_INVALID;
4616 dispcurs->attr |= ATTR_INVALID;
4620 term->dispcursx = term->dispcursy = -1;
4622 #ifdef OPTIMISE_SCROLL
4624 sr = term->scrollhead;
4626 struct scrollregion *next = sr->next;
4627 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4631 term->scrollhead = term->scrolltail = NULL;
4632 #endif /* OPTIMISE_SCROLL */
4634 /* The normal screen data */
4635 for (i = 0; i < term->rows; i++) {
4638 int dirty_line, dirty_run, selected;
4639 unsigned long attr = 0, cset = 0;
4640 int updated_line = 0;
4643 int last_run_dirty = 0;
4646 scrpos.y = i + term->disptop;
4647 ldata = lineptr(scrpos.y);
4649 dirty_run = dirty_line = (ldata->lattr !=
4650 term->disptext[i]->lattr);
4651 term->disptext[i]->lattr = ldata->lattr;
4653 /* Do Arabic shaping and bidi. */
4654 lchars = term_bidi_line(term, ldata, i);
4656 backward = term->post_bidi_cache[i].backward;
4658 lchars = ldata->chars;
4662 for (j = 0; j < term->cols; j++) {
4663 unsigned long tattr, tchar;
4664 termchar *d = lchars + j;
4665 int break_run, do_copy;
4666 scrpos.x = backward ? backward[j] : j;
4671 if (!term->cfg.ansi_colour)
4672 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4673 ATTR_DEFFG | ATTR_DEFBG;
4675 if (!term->cfg.xterm_256_colour) {
4677 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4678 if (colour >= 16 && colour < 256)
4679 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4680 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4681 if (colour >= 16 && colour < 256)
4682 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4685 switch (tchar & CSET_MASK) {
4687 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4690 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4693 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4696 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4699 /* Video reversing things */
4700 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4701 if (term->seltype == LEXICOGRAPHIC)
4702 selected = (posle(term->selstart, scrpos) &&
4703 poslt(scrpos, term->selend));
4705 selected = (posPle(term->selstart, scrpos) &&
4706 posPlt(scrpos, term->selend));
4710 ^ (selected ? ATTR_REVERSE : 0));
4712 /* 'Real' blinking ? */
4713 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4714 if (term->has_focus && term->tblinker) {
4715 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4717 tattr &= ~ATTR_BLINK;
4721 * Check the font we'll _probably_ be using to see if
4722 * the character is wide when we don't want it to be.
4724 if (tchar != term->disptext[i]->chars[j].chr ||
4725 tattr != (term->disptext[i]->chars[j].attr &~
4727 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4728 tattr |= ATTR_NARROW;
4729 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4730 tattr |= ATTR_NARROW;
4732 /* Cursor here ? Save the 'background' */
4733 if (i == our_curs_y && j == our_curs_x) {
4735 cursor_background.chr = tchar;
4736 cursor_background.attr = tattr;
4737 /* For once, this cc_next field is an absolute index in lchars */
4739 cursor_background.cc_next = d->cc_next + j;
4741 cursor_background.cc_next = 0;
4742 term->dispcursx = j;
4743 term->dispcursy = i;
4746 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4749 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4751 /* Special hack for VT100 Linedraw glyphs */
4752 if (tchar >= 0x23BA && tchar <= 0x23BD)
4756 * Separate out sequences of characters that have the
4757 * same CSET, if that CSET is a magic one.
4759 if (CSET_OF(tchar) != cset)
4763 * Break on both sides of any combined-character cell.
4765 if (d->cc_next != 0 ||
4766 (j > 0 && d[-1].cc_next != 0))
4769 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4770 if (term->disptext[i]->chars[j].chr == tchar &&
4771 term->disptext[i]->chars[j].attr == tattr)
4773 else if (!dirty_run && ccount == 1)
4778 if ((dirty_run || last_run_dirty) && ccount > 0) {
4779 do_text(ctx, start, i, ch, ccount, attr, ldata->lattr);
4785 cset = CSET_OF(tchar);
4786 if (term->ucsdata->dbcs_screenfont)
4787 last_run_dirty = dirty_run;
4788 dirty_run = dirty_line;
4792 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4798 if (ccount >= chlen) {
4799 chlen = ccount + 256;
4800 ch = sresize(ch, chlen, wchar_t);
4802 ch[ccount++] = (wchar_t) tchar;
4807 while (dd->cc_next) {
4808 unsigned long schar;
4813 switch (schar & CSET_MASK) {
4815 schar = term->ucsdata->unitab_line[schar & 0xFF];
4818 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4821 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4825 if (ccount >= chlen) {
4826 chlen = ccount + 256;
4827 ch = sresize(ch, chlen, wchar_t);
4829 ch[ccount++] = (wchar_t) schar;
4832 attr |= TATTR_COMBINING;
4836 copy_termchar(term->disptext[i], j, d);
4837 term->disptext[i]->chars[j].chr = tchar;
4838 term->disptext[i]->chars[j].attr = tattr;
4841 /* If it's a wide char step along to the next one. */
4842 if (tattr & ATTR_WIDE) {
4843 if (++j < term->cols) {
4846 * By construction above, the cursor should not
4847 * be on the right-hand half of this character.
4850 assert(!(i == our_curs_y && j == our_curs_x));
4851 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4853 copy_termchar(term->disptext[i], j, d);
4857 if (dirty_run && ccount > 0) {
4858 do_text(ctx, start, i, ch, ccount, attr, ldata->lattr);
4862 /* Cursor on this line ? (and changed) */
4863 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
4864 ch[0] = (wchar_t) cursor_background.chr;
4865 attr = cursor_background.attr | cursor;
4868 if (cursor_background.cc_next) {
4869 termchar *dd = ldata->chars + cursor_background.cc_next;
4872 unsigned long schar;
4875 switch (schar & CSET_MASK) {
4877 schar = term->ucsdata->unitab_line[schar & 0xFF];
4880 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4883 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4887 if (ccount >= chlen) {
4888 chlen = ccount + 256;
4889 ch = sresize(ch, chlen, wchar_t);
4891 ch[ccount++] = (wchar_t) schar;
4899 attr |= TATTR_COMBINING;
4902 do_cursor(ctx, our_curs_x, i, ch, ccount, attr, ldata->lattr);
4903 term->curstype = cursor;
4913 * Invalidate the whole screen so it will be repainted in full.
4915 void term_invalidate(Terminal *term)
4919 for (i = 0; i < term->rows; i++)
4920 for (j = 0; j < term->cols; j++)
4921 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4923 term_schedule_update(term);
4927 * Paint the window in response to a WM_PAINT message.
4929 void term_paint(Terminal *term, Context ctx,
4930 int left, int top, int right, int bottom, int immediately)
4933 if (left < 0) left = 0;
4934 if (top < 0) top = 0;
4935 if (right >= term->cols) right = term->cols-1;
4936 if (bottom >= term->rows) bottom = term->rows-1;
4938 for (i = top; i <= bottom && i < term->rows; i++) {
4939 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
4940 for (j = left; j <= right && j < term->cols; j++)
4941 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4943 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
4944 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4948 do_paint (term, ctx, FALSE);
4950 term_schedule_update(term);
4955 * Attempt to scroll the scrollback. The second parameter gives the
4956 * position we want to scroll to; the first is +1 to denote that
4957 * this position is relative to the beginning of the scrollback, -1
4958 * to denote it is relative to the end, and 0 to denote that it is
4959 * relative to the current position.
4961 void term_scroll(Terminal *term, int rel, int where)
4963 int sbtop = -sblines(term);
4964 #ifdef OPTIMISE_SCROLL
4965 int olddisptop = term->disptop;
4967 #endif /* OPTIMISE_SCROLL */
4969 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
4970 if (term->disptop < sbtop)
4971 term->disptop = sbtop;
4972 if (term->disptop > 0)
4975 #ifdef OPTIMISE_SCROLL
4976 shift = (term->disptop - olddisptop);
4977 if (shift < term->rows && shift > -term->rows)
4978 scroll_display(term, 0, term->rows - 1, shift);
4979 #endif /* OPTIMISE_SCROLL */
4983 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
4986 wchar_t *wbptr; /* where next char goes within workbuf */
4988 int wblen = 0; /* workbuf len */
4989 int buflen; /* amount of memory allocated to workbuf */
4991 buflen = 5120; /* Default size */
4992 workbuf = snewn(buflen, wchar_t);
4993 wbptr = workbuf; /* start filling here */
4994 old_top_x = top.x; /* needed for rect==1 */
4996 while (poslt(top, bottom)) {
4998 termline *ldata = lineptr(top.y);
5002 * nlpos will point at the maximum position on this line we
5003 * should copy up to. So we start it at the end of the
5007 nlpos.x = term->cols;
5010 * ... move it backwards if there's unused space at the end
5011 * of the line (and also set `nl' if this is the case,
5012 * because in normal selection mode this means we need a
5013 * newline at the end)...
5015 if (!(ldata->lattr & LATTR_WRAPPED)) {
5016 while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5017 !ldata->chars[nlpos.x - 1].cc_next &&
5020 if (poslt(nlpos, bottom))
5022 } else if (ldata->lattr & LATTR_WRAPPED2) {
5023 /* Ignore the last char on the line in a WRAPPED2 line. */
5028 * ... and then clip it to the terminal x coordinate if
5029 * we're doing rectangular selection. (In this case we
5030 * still did the above, so that copying e.g. the right-hand
5031 * column from a table doesn't fill with spaces on the
5035 if (nlpos.x > bottom.x)
5037 nl = (top.y < bottom.y);
5040 while (poslt(top, bottom) && poslt(top, nlpos)) {
5043 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5045 wchar_t cbuf[16], *p;
5049 if (ldata->chars[x].chr == UCSWIDE) {
5055 int uc = ldata->chars[x].chr;
5057 switch (uc & CSET_MASK) {
5059 if (!term->cfg.rawcnp) {
5060 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5064 uc = term->ucsdata->unitab_line[uc & 0xFF];
5067 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5070 switch (uc & CSET_MASK) {
5072 uc = term->ucsdata->unitab_font[uc & 0xFF];
5075 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5079 set = (uc & CSET_MASK);
5080 c = (uc & ~CSET_MASK);
5084 if (DIRECT_FONT(uc)) {
5085 if (c >= ' ' && c != 0x7F) {
5089 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5091 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5092 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5096 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5100 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5107 for (p = cbuf; *p; p++) {
5108 /* Enough overhead for trailing NL and nul */
5109 if (wblen >= buflen - 16) {
5111 workbuf = sresize(workbuf, buflen, wchar_t);
5112 wbptr = workbuf + wblen;
5118 if (ldata->chars[x].cc_next)
5119 x += ldata->chars[x].cc_next;
5127 for (i = 0; i < sel_nl_sz; i++) {
5129 *wbptr++ = sel_nl[i];
5133 top.x = rect ? old_top_x : 0;
5137 #if SELECTION_NUL_TERMINATED
5141 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
5142 if (buflen > 0) /* indicates we allocated this buffer */
5146 void term_copyall(Terminal *term)
5150 tree234 *screen = term->screen;
5151 top.y = -sblines(term);
5153 bottom.y = find_last_nonempty_line(term, screen);
5154 bottom.x = term->cols;
5155 clipme(term, top, bottom, 0, TRUE);
5159 * The wordness array is mainly for deciding the disposition of the
5160 * US-ASCII characters.
5162 static int wordtype(Terminal *term, int uc)
5165 int start, end, ctype;
5167 static const struct ucsword ucs_words[] = {
5173 0x037e, 0x037e, 1}, /* Greek question mark */
5175 0x0387, 0x0387, 1}, /* Greek ano teleia */
5177 0x055a, 0x055f, 1}, /* Armenian punctuation */
5179 0x0589, 0x0589, 1}, /* Armenian full stop */
5181 0x0700, 0x070d, 1}, /* Syriac punctuation */
5183 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5185 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5187 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5189 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5191 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5193 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5195 0x2000, 0x200a, 0}, /* Various spaces */
5197 0x2070, 0x207f, 2}, /* superscript */
5199 0x2080, 0x208f, 2}, /* subscript */
5201 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5203 0x3000, 0x3000, 0}, /* ideographic space */
5205 0x3001, 0x3020, 1}, /* ideographic punctuation */
5207 0x303f, 0x309f, 3}, /* Hiragana */
5209 0x30a0, 0x30ff, 3}, /* Katakana */
5211 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5213 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5215 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5217 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5219 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5221 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5223 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5225 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5227 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5231 const struct ucsword *wptr;
5233 switch (uc & CSET_MASK) {
5235 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5238 uc = term->ucsdata->unitab_line[uc & 0xFF];
5241 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5244 switch (uc & CSET_MASK) {
5246 uc = term->ucsdata->unitab_font[uc & 0xFF];
5249 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5253 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5254 * fail as there's such a thing as a double width space. :-(
5256 if (term->ucsdata->dbcs_screenfont &&
5257 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5261 return term->wordness[uc];
5263 for (wptr = ucs_words; wptr->start; wptr++) {
5264 if (uc >= wptr->start && uc <= wptr->end)
5272 * Spread the selection outwards according to the selection mode.
5274 static pos sel_spread_half(Terminal *term, pos p, int dir)
5278 int topy = -sblines(term);
5280 ldata = lineptr(p.y);
5282 switch (term->selmode) {
5285 * In this mode, every character is a separate unit, except
5286 * for runs of spaces at the end of a non-wrapping line.
5288 if (!(ldata->lattr & LATTR_WRAPPED)) {
5289 termchar *q = ldata->chars + term->cols;
5290 while (q > ldata->chars &&
5291 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5293 if (q == ldata->chars + term->cols)
5295 if (p.x >= q - ldata->chars)
5296 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5301 * In this mode, the units are maximal runs of characters
5302 * whose `wordness' has the same value.
5304 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5307 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5308 term->cols-1 : term->cols);
5309 if (p.x < maxcols-1) {
5310 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5315 if (ldata->lattr & LATTR_WRAPPED) {
5317 ldata2 = lineptr(p.y+1);
5318 if (wordtype(term, UCSGET(ldata2->chars, 0))
5335 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5344 ldata2 = lineptr(p.y-1);
5345 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5346 term->cols-1 : term->cols);
5347 if (ldata2->lattr & LATTR_WRAPPED) {
5348 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5366 * In this mode, every line is a unit.
5368 p.x = (dir == -1 ? 0 : term->cols - 1);
5376 static void sel_spread(Terminal *term)
5378 if (term->seltype == LEXICOGRAPHIC) {
5379 term->selstart = sel_spread_half(term, term->selstart, -1);
5380 decpos(term->selend);
5381 term->selend = sel_spread_half(term, term->selend, +1);
5382 incpos(term->selend);
5386 void term_do_paste(Terminal *term)
5391 get_clip(term->frontend, &data, &len);
5392 if (data && len > 0) {
5395 term_seen_key_event(term); /* pasted data counts */
5397 if (term->paste_buffer)
5398 sfree(term->paste_buffer);
5399 term->paste_pos = term->paste_hold = term->paste_len = 0;
5400 term->paste_buffer = snewn(len, wchar_t);
5403 while (p < data + len) {
5404 while (p < data + len &&
5405 !(p <= data + len - sel_nl_sz &&
5406 !memcmp(p, sel_nl, sizeof(sel_nl))))
5411 for (i = 0; i < p - q; i++) {
5412 term->paste_buffer[term->paste_len++] = q[i];
5416 if (p <= data + len - sel_nl_sz &&
5417 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5418 term->paste_buffer[term->paste_len++] = '\015';
5424 /* Assume a small paste will be OK in one go. */
5425 if (term->paste_len < 256) {
5427 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5428 if (term->paste_buffer)
5429 sfree(term->paste_buffer);
5430 term->paste_buffer = 0;
5431 term->paste_pos = term->paste_hold = term->paste_len = 0;
5434 get_clip(term->frontend, NULL, NULL);
5437 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5438 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5442 int raw_mouse = (term->xterm_mouse &&
5443 !term->cfg.no_mouse_rep &&
5444 !(term->cfg.mouse_override && shift));
5445 int default_seltype;
5449 if (a == MA_DRAG && !raw_mouse)
5450 term_scroll(term, 0, -1);
5452 if (y >= term->rows) {
5454 if (a == MA_DRAG && !raw_mouse)
5455 term_scroll(term, 0, +1);
5464 if (x >= term->cols)
5467 selpoint.y = y + term->disptop;
5468 ldata = lineptr(selpoint.y);
5470 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5474 * Transform x through the bidi algorithm to find the _logical_
5475 * click point from the physical one.
5477 if (term_bidi_line(term, ldata, y) != NULL) {
5478 x = term->post_bidi_cache[y].backward[x];
5485 int encstate = 0, r, c;
5492 encstate = 0x20; /* left button down */
5503 case MBT_WHEEL_DOWN:
5506 default: break; /* placate gcc warning about enum use */
5510 if (term->xterm_mouse == 1)
5516 term->mouse_is_down = 0;
5519 if (term->mouse_is_down == braw)
5521 term->mouse_is_down = braw;
5523 default: break; /* placate gcc warning about enum use */
5532 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5533 ldisc_send(term->ldisc, abuf, 6, 0);
5539 * Set the selection type (rectangular or normal) at the start
5540 * of a selection attempt, from the state of Alt.
5542 if (!alt ^ !term->cfg.rect_select)
5543 default_seltype = RECTANGULAR;
5545 default_seltype = LEXICOGRAPHIC;
5547 if (term->selstate == NO_SELECTION) {
5548 term->seltype = default_seltype;
5551 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5553 term->selstate = ABOUT_TO;
5554 term->seltype = default_seltype;
5555 term->selanchor = selpoint;
5556 term->selmode = SM_CHAR;
5557 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5559 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5560 term->selstate = DRAGGING;
5561 term->selstart = term->selanchor = selpoint;
5562 term->selend = term->selstart;
5563 incpos(term->selend);
5565 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5566 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5567 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5569 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5570 term->selstate == SELECTED) {
5571 if (term->seltype == LEXICOGRAPHIC) {
5573 * For normal selection, we extend by moving
5574 * whichever end of the current selection is closer
5577 if (posdiff(selpoint, term->selstart) <
5578 posdiff(term->selend, term->selstart) / 2) {
5579 term->selanchor = term->selend;
5580 decpos(term->selanchor);
5582 term->selanchor = term->selstart;
5586 * For rectangular selection, we have a choice of
5587 * _four_ places to put selanchor and selpoint: the
5588 * four corners of the selection.
5590 if (2*selpoint.x < term->selstart.x + term->selend.x)
5591 term->selanchor.x = term->selend.x-1;
5593 term->selanchor.x = term->selstart.x;
5595 if (2*selpoint.y < term->selstart.y + term->selend.y)
5596 term->selanchor.y = term->selend.y;
5598 term->selanchor.y = term->selstart.y;
5600 term->selstate = DRAGGING;
5602 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5603 term->selanchor = selpoint;
5604 term->selstate = DRAGGING;
5605 if (term->seltype == LEXICOGRAPHIC) {
5607 * For normal selection, we set (selstart,selend) to
5608 * (selpoint,selanchor) in some order.
5610 if (poslt(selpoint, term->selanchor)) {
5611 term->selstart = selpoint;
5612 term->selend = term->selanchor;
5613 incpos(term->selend);
5615 term->selstart = term->selanchor;
5616 term->selend = selpoint;
5617 incpos(term->selend);
5621 * For rectangular selection, we may need to
5622 * interchange x and y coordinates (if the user has
5623 * dragged in the -x and +y directions, or vice versa).
5625 term->selstart.x = min(term->selanchor.x, selpoint.x);
5626 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5627 term->selstart.y = min(term->selanchor.y, selpoint.y);
5628 term->selend.y = max(term->selanchor.y, selpoint.y);
5631 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5633 if (term->selstate == DRAGGING) {
5635 * We've completed a selection. We now transfer the
5636 * data to the clipboard.
5638 clipme(term, term->selstart, term->selend,
5639 (term->seltype == RECTANGULAR), FALSE);
5640 term->selstate = SELECTED;
5642 term->selstate = NO_SELECTION;
5643 } else if (bcooked == MBT_PASTE
5645 #if MULTICLICK_ONLY_EVENT
5646 || a == MA_2CLK || a == MA_3CLK
5649 request_paste(term->frontend);
5655 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5656 unsigned int modifiers, unsigned int flags)
5660 int prependesc = FALSE;
5664 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5665 for (i = 0; i < tlen; i++)
5666 fprintf(stderr, " %04x", (unsigned)text[i]);
5667 fprintf(stderr, "\n");
5671 if ((flags & PKF_REPEAT) && term->repeat_off)
5674 /* Currently, Meta always just prefixes everything with ESC. */
5675 if (modifiers & PKM_META)
5677 modifiers &= ~PKM_META;
5680 * Alt is only used for Alt+keypad, which isn't supported yet, so
5683 modifiers &= ~PKM_ALT;
5685 /* Standard local function keys */
5686 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5688 if (keysym == PK_PAGEUP)
5689 /* scroll up one page */;
5690 if (keysym == PK_PAGEDOWN)
5691 /* scroll down on page */;
5692 if (keysym == PK_INSERT)
5693 term_do_paste(term);
5696 if (keysym == PK_PAGEUP)
5697 /* scroll up one line */;
5698 if (keysym == PK_PAGEDOWN)
5699 /* scroll down one line */;
5700 /* Control-Numlock for app-keypad mode switch */
5701 if (keysym == PK_PF1)
5702 term->app_keypad_keys ^= 1;
5706 if (modifiers & PKM_ALT) {
5707 /* Alt+F4 (close) */
5708 /* Alt+Return (full screen) */
5709 /* Alt+Space (system menu) */
5712 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5713 text[0] >= 0x20 && text[0] <= 0x7e) {
5714 /* ASCII chars + Control */
5715 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5716 (text[0] >= 0x61 && text[0] <= 0x7a))
5720 * Control-2 should return ^@ (0x00), Control-6 should return
5721 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5722 * the DOS keyboard handling did it, and we have nothing better
5723 * to do with the key combo in question, we'll also map
5724 * Control-Backquote to ^\ (0x1C).
5727 case ' ': text[0] = 0x00; break;
5728 case '-': text[0] = 0x1f; break;
5729 case '/': text[0] = 0x1f; break;
5730 case '2': text[0] = 0x00; break;
5731 case '3': text[0] = 0x1b; break;
5732 case '4': text[0] = 0x1c; break;
5733 case '5': text[0] = 0x1d; break;
5734 case '6': text[0] = 0x1e; break;
5735 case '7': text[0] = 0x1f; break;
5736 case '8': text[0] = 0x7f; break;
5737 case '`': text[0] = 0x1c; break;
5742 /* Nethack keypad */
5743 if (term->cfg.nethack_keypad) {
5746 case PK_KP1: c = 'b'; break;
5747 case PK_KP2: c = 'j'; break;
5748 case PK_KP3: c = 'n'; break;
5749 case PK_KP4: c = 'h'; break;
5750 case PK_KP5: c = '.'; break;
5751 case PK_KP6: c = 'l'; break;
5752 case PK_KP7: c = 'y'; break;
5753 case PK_KP8: c = 'k'; break;
5754 case PK_KP9: c = 'u'; break;
5755 default: break; /* else gcc warns `enum value not used' */
5759 if (modifiers & PKM_CONTROL)
5761 else if (modifiers & PKM_SHIFT)
5769 /* Numeric Keypad */
5770 if (PK_ISKEYPAD(keysym)) {
5774 * In VT400 mode, PFn always emits an escape sequence. In
5775 * Linux and tilde modes, this only happens in app keypad mode.
5777 if (term->cfg.funky_type == FUNKY_VT400 ||
5778 ((term->cfg.funky_type == FUNKY_LINUX ||
5779 term->cfg.funky_type == FUNKY_TILDE) &&
5780 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5782 case PK_PF1: xkey = 'P'; break;
5783 case PK_PF2: xkey = 'Q'; break;
5784 case PK_PF3: xkey = 'R'; break;
5785 case PK_PF4: xkey = 'S'; break;
5786 default: break; /* else gcc warns `enum value not used' */
5789 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5791 case PK_KP0: xkey = 'p'; break;
5792 case PK_KP1: xkey = 'q'; break;
5793 case PK_KP2: xkey = 'r'; break;
5794 case PK_KP3: xkey = 's'; break;
5795 case PK_KP4: xkey = 't'; break;
5796 case PK_KP5: xkey = 'u'; break;
5797 case PK_KP6: xkey = 'v'; break;
5798 case PK_KP7: xkey = 'w'; break;
5799 case PK_KP8: xkey = 'x'; break;
5800 case PK_KP9: xkey = 'y'; break;
5801 case PK_KPDECIMAL: xkey = 'n'; break;
5802 case PK_KPENTER: xkey = 'M'; break;
5803 default: break; /* else gcc warns `enum value not used' */
5805 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5807 * xterm can't see the layout of the keypad, so it has
5808 * to rely on the X keysyms returned by the keys.
5809 * Hence, we look at the strings here, not the PuTTY
5810 * keysyms (which describe the layout).
5814 if (modifiers & PKM_SHIFT)
5819 case '/': xkey = 'o'; break;
5820 case '*': xkey = 'j'; break;
5821 case '-': xkey = 'm'; break;
5825 * In all other modes, we try to retain the layout of
5826 * the DEC keypad in application mode.
5830 /* This key covers the '-' and ',' keys on a VT220 */
5831 if (modifiers & PKM_SHIFT)
5832 xkey = 'm'; /* VT220 '-' */
5834 xkey = 'l'; /* VT220 ',' */
5836 case PK_KPMINUS: xkey = 'm'; break;
5837 case PK_KPCOMMA: xkey = 'l'; break;
5838 default: break; /* else gcc warns `enum value not used' */
5843 if (term->vt52_mode) {
5844 if (xkey >= 'P' && xkey <= 'S')
5845 p += sprintf((char *) p, "\x1B%c", xkey);
5847 p += sprintf((char *) p, "\x1B?%c", xkey);
5849 p += sprintf((char *) p, "\x1BO%c", xkey);
5852 /* Not in application mode -- treat the number pad as arrow keys? */
5853 if ((flags & PKF_NUMLOCK) == 0) {
5855 case PK_KP0: keysym = PK_INSERT; break;
5856 case PK_KP1: keysym = PK_END; break;
5857 case PK_KP2: keysym = PK_DOWN; break;
5858 case PK_KP3: keysym = PK_PAGEDOWN; break;
5859 case PK_KP4: keysym = PK_LEFT; break;
5860 case PK_KP5: keysym = PK_REST; break;
5861 case PK_KP6: keysym = PK_RIGHT; break;
5862 case PK_KP7: keysym = PK_HOME; break;
5863 case PK_KP8: keysym = PK_UP; break;
5864 case PK_KP9: keysym = PK_PAGEUP; break;
5865 default: break; /* else gcc warns `enum value not used' */
5870 /* Miscellaneous keys */
5877 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5878 else if (modifiers == PKM_SHIFT)
5879 /* We do the opposite of what is configured */
5880 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5886 else if (modifiers == PKM_SHIFT)
5887 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5890 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5892 if (modifiers == PKM_CONTROL)
5897 case PK_KPENTER: /* Odd keypad modes handled above */
5898 if (modifiers == 0) {
5900 if (term->cr_lf_return)
5904 default: break; /* else gcc warns `enum value not used' */
5907 /* SCO function keys and editing keys */
5908 if (term->cfg.funky_type == FUNKY_SCO) {
5909 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
5910 static char const codes[] =
5911 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5912 int index = keysym - PK_F1;
5914 if (modifiers & PKM_SHIFT) index += 12;
5915 if (modifiers & PKM_CONTROL) index += 24;
5916 p += sprintf((char *) p, "\x1B[%c", codes[index]);
5919 if (PK_ISEDITING(keysym)) {
5923 case PK_DELETE: *p++ = 0x7f; goto done;
5924 case PK_HOME: xkey = 'H'; break;
5925 case PK_INSERT: xkey = 'L'; break;
5926 case PK_END: xkey = 'F'; break;
5927 case PK_PAGEUP: xkey = 'I'; break;
5928 case PK_PAGEDOWN: xkey = 'G'; break;
5929 default: break; /* else gcc warns `enum value not used' */
5931 p += sprintf((char *) p, "\x1B[%c", xkey);
5935 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
5938 if (term->cfg.funky_type == FUNKY_XTERM) {
5939 /* Xterm shuffles these keys, apparently. */
5941 case PK_HOME: keysym = PK_INSERT; break;
5942 case PK_INSERT: keysym = PK_HOME; break;
5943 case PK_DELETE: keysym = PK_END; break;
5944 case PK_END: keysym = PK_PAGEUP; break;
5945 case PK_PAGEUP: keysym = PK_DELETE; break;
5946 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
5947 default: break; /* else gcc warns `enum value not used' */
5952 if (term->cfg.rxvt_homeend &&
5953 (keysym == PK_HOME || keysym == PK_END)) {
5954 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
5958 if (term->vt52_mode) {
5962 * A real VT52 doesn't have these, and a VT220 doesn't
5963 * send anything for them in VT52 mode.
5966 case PK_HOME: xkey = 'H'; break;
5967 case PK_INSERT: xkey = 'L'; break;
5968 case PK_DELETE: xkey = 'M'; break;
5969 case PK_END: xkey = 'E'; break;
5970 case PK_PAGEUP: xkey = 'I'; break;
5971 case PK_PAGEDOWN: xkey = 'G'; break;
5972 default: xkey=0; break; /* else gcc warns `enum value not used'*/
5974 p += sprintf((char *) p, "\x1B%c", xkey);
5979 case PK_HOME: code = 1; break;
5980 case PK_INSERT: code = 2; break;
5981 case PK_DELETE: code = 3; break;
5982 case PK_END: code = 4; break;
5983 case PK_PAGEUP: code = 5; break;
5984 case PK_PAGEDOWN: code = 6; break;
5985 default: code = 0; break; /* else gcc warns `enum value not used' */
5987 p += sprintf((char *) p, "\x1B[%d~", code);
5991 if (PK_ISFKEY(keysym)) {
5992 /* Map Shift+F1-F10 to F11-F20 */
5993 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
5995 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
5997 /* XXX This overrides the XTERM/VT52 mode below */
5999 if (keysym >= PK_F6) offt++;
6000 if (keysym >= PK_F12) offt++;
6001 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6002 'P' + keysym - PK_F1 - offt);
6005 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6006 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6009 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6010 if (term->vt52_mode)
6011 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6013 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6016 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6020 if (PK_ISCURSOR(keysym)) {
6024 case PK_UP: xkey = 'A'; break;
6025 case PK_DOWN: xkey = 'B'; break;
6026 case PK_RIGHT: xkey = 'C'; break;
6027 case PK_LEFT: xkey = 'D'; break;
6028 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6029 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6031 if (term->vt52_mode)
6032 p += sprintf((char *) p, "\x1B%c", xkey);
6034 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
6036 /* Useful mapping of Ctrl-arrows */
6037 if (modifiers == PKM_CONTROL)
6041 p += sprintf((char *) p, "\x1BO%c", xkey);
6043 p += sprintf((char *) p, "\x1B[%c", xkey);
6049 if (p > output || tlen > 0) {
6051 * Interrupt an ongoing paste. I'm not sure
6052 * this is sensible, but for the moment it's
6053 * preferable to having to faff about buffering
6059 * We need not bother about stdin backlogs
6060 * here, because in GUI PuTTY we can't do
6061 * anything about it anyway; there's no means
6062 * of asking Windows to hold off on KEYDOWN
6063 * messages. We _have_ to buffer everything
6066 term_seen_key_event(term);
6070 fprintf(stderr, "sending ESC\n");
6072 ldisc_send(term->ldisc, "\x1b", 1, 1);
6077 fprintf(stderr, "sending %d bytes:", p - output);
6078 for (i = 0; i < p - output; i++)
6079 fprintf(stderr, " %02x", output[i]);
6080 fprintf(stderr, "\n");
6082 ldisc_send(term->ldisc, output, p - output, 1);
6083 } else if (tlen > 0) {
6085 fprintf(stderr, "sending %d unichars:", tlen);
6086 for (i = 0; i < tlen; i++)
6087 fprintf(stderr, " %04x", (unsigned) text[i]);
6088 fprintf(stderr, "\n");
6090 luni_send(term->ldisc, text, tlen, 1);
6095 void term_nopaste(Terminal *term)
6097 if (term->paste_len == 0)
6099 sfree(term->paste_buffer);
6100 term->paste_buffer = NULL;
6101 term->paste_len = 0;
6104 int term_paste_pending(Terminal *term)
6106 return term->paste_len != 0;
6109 void term_paste(Terminal *term)
6111 long now, paste_diff;
6113 if (term->paste_len == 0)
6116 /* Don't wait forever to paste */
6117 if (term->paste_hold) {
6118 now = GETTICKCOUNT();
6119 paste_diff = now - term->last_paste;
6120 if (paste_diff >= 0 && paste_diff < 450)
6123 term->paste_hold = 0;
6125 while (term->paste_pos < term->paste_len) {
6127 while (n + term->paste_pos < term->paste_len) {
6128 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6132 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6133 term->paste_pos += n;
6135 if (term->paste_pos < term->paste_len) {
6136 term->paste_hold = 1;
6140 sfree(term->paste_buffer);
6141 term->paste_buffer = NULL;
6142 term->paste_len = 0;
6145 static void deselect(Terminal *term)
6147 term->selstate = NO_SELECTION;
6148 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6151 void term_deselect(Terminal *term)
6157 int term_ldisc(Terminal *term, int option)
6159 if (option == LD_ECHO)
6160 return term->term_echoing;
6161 if (option == LD_EDIT)
6162 return term->term_editing;
6166 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6168 bufchain_add(&term->inbuf, data, len);
6170 if (!term->in_term_out) {
6171 term->in_term_out = TRUE;
6172 term_reset_cblink(term);
6174 * During drag-selects, we do not process terminal input,
6175 * because the user will want the screen to hold still to
6178 if (term->selstate != DRAGGING)
6180 term->in_term_out = FALSE;
6184 * term_out() always completely empties inbuf. Therefore,
6185 * there's no reason at all to return anything other than zero
6186 * from this function, because there _can't_ be a question of
6187 * the remote side needing to wait until term_out() has cleared
6190 * This is a slightly suboptimal way to deal with SSH2 - in
6191 * principle, the window mechanism would allow us to continue
6192 * to accept data on forwarded ports and X connections even
6193 * while the terminal processing was going slowly - but we
6194 * can't do the 100% right thing without moving the terminal
6195 * processing into a separate thread, and that might hurt
6196 * portability. So we manage stdout buffering the old SSH1 way:
6197 * if the terminal processing goes slowly, the whole SSH
6198 * connection stops accepting data until it's ready.
6200 * In practice, I can't imagine this causing serious trouble.
6205 void term_provide_logctx(Terminal *term, void *logctx)
6207 term->logctx = logctx;
6210 void term_set_focus(Terminal *term, int has_focus)
6212 term->has_focus = has_focus;
6213 term_schedule_cblink(term);