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 if (c->attr < 0x8000) {
559 add(b, (unsigned char)((c->attr >> 8) & 0xFF));
560 add(b, (unsigned char)(c->attr & 0xFF));
562 add(b, (unsigned char)(((c->attr >> 24) & 0x7F) | 0x80));
563 add(b, (unsigned char)((c->attr >> 16) & 0xFF));
564 add(b, (unsigned char)((c->attr >> 8) & 0xFF));
565 add(b, (unsigned char)(c->attr & 0xFF));
568 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
571 * For combining characters, I just encode a bunch of ordinary
572 * chars using makeliteral_chr, and terminate with a \0
573 * character (which I know won't come up as a combining char
576 * I don't use the stateful encoding in makeliteral_chr.
578 unsigned long zstate;
587 makeliteral_chr(b, c, &zstate);
592 makeliteral_chr(b, &z, &zstate);
595 static termline *decompressline(unsigned char *data, int *bytes_used);
597 static unsigned char *compressline(termline *ldata)
599 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
602 * First, store the column count, 7 bits at a time, least
603 * significant `digit' first, with the high bit set on all but
609 add(b, (unsigned char)((n & 0x7F) | 0x80));
612 add(b, (unsigned char)(n));
616 * Next store the lattrs; same principle.
619 int n = ldata->lattr;
621 add(b, (unsigned char)((n & 0x7F) | 0x80));
624 add(b, (unsigned char)(n));
628 * Now we store a sequence of separate run-length encoded
629 * fragments, each containing exactly as many symbols as there
630 * are columns in the ldata.
632 * All of these have a common basic format:
634 * - a byte 00-7F indicates that X+1 literals follow it
635 * - a byte 80-FF indicates that a single literal follows it
636 * and expects to be repeated (X-0x80)+2 times.
638 * The format of the `literals' varies between the fragments.
640 makerle(b, ldata, makeliteral_chr);
641 makerle(b, ldata, makeliteral_attr);
642 makerle(b, ldata, makeliteral_cc);
645 * Diagnostics: ensure that the compressed data really does
646 * decompress to the right thing.
648 * XXX-REMOVE-BEFORE-RELEASE: This is a bit performance-heavy
649 * to be leaving in production code.
651 #ifndef CHECK_SB_COMPRESSION
657 #ifdef DIAGNOSTIC_SB_COMPRESSION
658 for (i = 0; i < b->len; i++) {
659 printf(" %02x ", b->data[i]);
664 dcl = decompressline(b->data, &dused);
665 assert(b->len == dused);
666 assert(ldata->cols == dcl->cols);
667 assert(ldata->lattr == dcl->lattr);
668 for (i = 0; i < ldata->cols; i++)
669 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
671 #ifdef DIAGNOSTIC_SB_COMPRESSION
672 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
673 ldata->cols, 4 * ldata->cols, dused,
674 (double)dused / (4 * ldata->cols));
682 * Trim the allocated memory so we don't waste any, and return.
684 return sresize(b->data, b->len, unsigned char);
687 static void readrle(struct buf *b, termline *ldata,
688 void (*readliteral)(struct buf *b, termchar *c,
689 termline *ldata, unsigned long *state))
692 unsigned long state = 0;
694 while (n < ldata->cols) {
700 int pos = b->len, count = hdr + 2 - 0x80;
702 assert(n < ldata->cols);
704 readliteral(b, ldata->chars + n, ldata, &state);
708 /* Just a sequence of consecutive literals. */
712 assert(n < ldata->cols);
713 readliteral(b, ldata->chars + n, ldata, &state);
719 assert(n == ldata->cols);
721 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
722 unsigned long *state)
727 * 00000000-0000007F: 0xxxxxxx
728 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
729 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
730 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
731 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
736 c->chr = byte | *state;
737 } else if (byte < 0xC0) {
738 c->chr = (byte &~ 0xC0) << 8;
740 } else if (byte < 0xE0) {
741 c->chr = (byte &~ 0xE0) << 16;
742 c->chr |= get(b) << 8;
744 } else if (byte < 0xF0) {
745 c->chr = (byte &~ 0xF0) << 24;
746 c->chr |= get(b) << 16;
747 c->chr |= get(b) << 8;
750 assert(byte == 0xF0);
751 c->chr = get(b) << 24;
752 c->chr |= get(b) << 16;
753 c->chr |= get(b) << 8;
756 *state = c->chr & ~0xFF;
758 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
759 unsigned long *state)
774 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
775 unsigned long *state)
778 unsigned long zstate;
779 int x = c - ldata->chars;
785 readliteral_chr(b, &n, ldata, &zstate);
788 add_cc(ldata, x, n.chr);
792 static termline *decompressline(unsigned char *data, int *bytes_used)
794 int ncols, byte, shift;
795 struct buf buffer, *b = &buffer;
802 * First read in the column count.
807 ncols |= (byte & 0x7F) << shift;
809 } while (byte & 0x80);
812 * Now create the output termline.
814 ldata = snew(termline);
815 ldata->chars = snewn(ncols, termchar);
816 ldata->cols = ldata->size = ncols;
817 ldata->temporary = TRUE;
821 * We must set all the cc pointers in ldata->chars to 0 right
822 * now, so that cc diagnostics that verify the integrity of the
823 * whole line will make sense while we're in the middle of
828 for (i = 0; i < ldata->cols; i++)
829 ldata->chars[i].cc_next = 0;
833 * Now read in the lattr.
835 ldata->lattr = shift = 0;
838 ldata->lattr |= (byte & 0x7F) << shift;
840 } while (byte & 0x80);
843 * Now we read in each of the RLE streams in turn.
845 readrle(b, ldata, readliteral_chr);
846 readrle(b, ldata, readliteral_attr);
847 readrle(b, ldata, readliteral_cc);
849 /* Return the number of bytes read, for diagnostic purposes. */
851 *bytes_used = b->len;
857 * Resize a line to make it `cols' columns wide.
859 static void resizeline(Terminal *term, termline *line, int cols)
863 if (line->cols != cols) {
865 oldcols = line->cols;
868 * This line is the wrong length, which probably means it
869 * hasn't been accessed since a resize. Resize it now.
871 * First, go through all the characters that will be thrown
872 * out in the resize (if we're shrinking the line) and
873 * return their cc lists to the cc free list.
875 for (i = cols; i < oldcols; i++)
879 * If we're shrinking the line, we now bodily move the
880 * entire cc section from where it started to where it now
881 * needs to be. (We have to do this before the resize, so
882 * that the data we're copying is still there. However, if
883 * we're expanding, we have to wait until _after_ the
884 * resize so that the space we're copying into is there.)
887 memmove(line->chars + cols, line->chars + oldcols,
888 (line->size - line->cols) * TSIZE);
891 * Now do the actual resize, leaving the _same_ amount of
892 * cc space as there was to begin with.
894 line->size += cols - oldcols;
895 line->chars = sresize(line->chars, line->size, TTYPE);
899 * If we're expanding the line, _now_ we move the cc
903 memmove(line->chars + cols, line->chars + oldcols,
904 (line->size - line->cols) * TSIZE);
907 * Go through what's left of the original line, and adjust
908 * the first cc_next pointer in each list. (All the
909 * subsequent ones are still valid because they are
910 * relative offsets within the cc block.) Also do the same
911 * to the head of the cc_free list.
913 for (i = 0; i < oldcols && i < cols; i++)
914 if (line->chars[i].cc_next)
915 line->chars[i].cc_next += cols - oldcols;
917 line->cc_free += cols - oldcols;
920 * And finally fill in the new space with erase chars. (We
921 * don't have to worry about cc lists here, because we
922 * _know_ the erase char doesn't have one.)
924 for (i = oldcols; i < cols; i++)
925 line->chars[i] = term->basic_erase_char;
927 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
932 * Get the number of lines in the scrollback.
934 static int sblines(Terminal *term)
936 int sblines = count234(term->scrollback);
937 if (term->cfg.erase_to_scrollback &&
938 term->alt_which && term->alt_screen) {
939 sblines += term->alt_sblines;
945 * Retrieve a line of the screen or of the scrollback, according to
946 * whether the y coordinate is non-negative or negative
949 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
956 whichtree = term->screen;
963 if (term->cfg.erase_to_scrollback &&
964 term->alt_which && term->alt_screen) {
965 altlines = term->alt_sblines;
968 whichtree = term->scrollback;
969 treeindex = y + altlines + count234(term->scrollback);
971 whichtree = term->alt_screen;
972 treeindex = y + term->alt_sblines;
973 /* treeindex = y + count234(term->alt_screen); */
976 if (whichtree == term->scrollback) {
977 unsigned char *cline = index234(whichtree, treeindex);
978 line = decompressline(cline, NULL);
980 line = index234(whichtree, treeindex);
983 /* We assume that we don't screw up and retrieve something out of range. */
984 assert(line != NULL);
986 resizeline(term, line, term->cols);
987 /* FIXME: should we sort the compressed scrollback out here? */
992 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
993 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
995 static void term_schedule_tblink(Terminal *term);
996 static void term_schedule_cblink(Terminal *term);
998 static void term_timer(void *ctx, long now)
1000 Terminal *term = (Terminal *)ctx;
1003 if (term->tblink_pending && now - term->next_tblink >= 0) {
1004 term->tblinker = !term->tblinker;
1005 term->tblink_pending = FALSE;
1006 term_schedule_tblink(term);
1010 if (term->cblink_pending && now - term->next_cblink >= 0) {
1011 term->cblinker = !term->cblinker;
1012 term->cblink_pending = FALSE;
1013 term_schedule_cblink(term);
1017 if (term->in_vbell && now - term->vbell_end >= 0) {
1018 term->in_vbell = FALSE;
1023 (term->window_update_pending && now - term->next_update >= 0))
1028 * Call this whenever the terminal window state changes, to queue
1031 static void seen_disp_event(Terminal *term)
1033 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1034 if (!term->window_update_pending) {
1035 term->window_update_pending = TRUE;
1036 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1041 * Call when the terminal's blinking-text settings change, or when
1042 * a text blink has just occurred.
1044 static void term_schedule_tblink(Terminal *term)
1046 if (term->blink_is_real) {
1047 if (!term->tblink_pending)
1048 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1049 term->tblink_pending = TRUE;
1051 term->tblinker = 1; /* reset when not in use */
1052 term->tblink_pending = FALSE;
1057 * Likewise with cursor blinks.
1059 static void term_schedule_cblink(Terminal *term)
1061 if (term->cfg.blink_cur && term->has_focus) {
1062 if (!term->cblink_pending)
1063 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1064 term->cblink_pending = TRUE;
1066 term->cblinker = 1; /* reset when not in use */
1067 term->cblink_pending = FALSE;
1072 * Call to reset cursor blinking on new output.
1074 static void term_reset_cblink(Terminal *term)
1076 seen_disp_event(term);
1078 term->cblink_pending = FALSE;
1079 term_schedule_cblink(term);
1083 * Call to begin a visual bell.
1085 static void term_schedule_vbell(Terminal *term, int already_started,
1088 long ticks_already_gone;
1090 if (already_started)
1091 ticks_already_gone = GETTICKCOUNT() - startpoint;
1093 ticks_already_gone = 0;
1095 if (ticks_already_gone < VBELL_DELAY) {
1096 term->in_vbell = TRUE;
1097 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1100 term->in_vbell = FALSE;
1105 * Set up power-on settings for the terminal.
1107 static void power_on(Terminal *term)
1109 term->curs.x = term->curs.y = 0;
1110 term->alt_x = term->alt_y = 0;
1111 term->savecurs.x = term->savecurs.y = 0;
1112 term->alt_t = term->marg_t = 0;
1113 if (term->rows != -1)
1114 term->alt_b = term->marg_b = term->rows - 1;
1116 term->alt_b = term->marg_b = 0;
1117 if (term->cols != -1) {
1119 for (i = 0; i < term->cols; i++)
1120 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1122 term->alt_om = term->dec_om = term->cfg.dec_om;
1123 term->alt_ins = term->insert = FALSE;
1124 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
1125 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1126 term->alt_cset = term->cset = term->save_cset = 0;
1127 term->alt_utf = term->utf = term->save_utf = 0;
1128 term->utf_state = 0;
1129 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
1130 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII;
1132 term->in_vbell = FALSE;
1133 term->cursor_on = 1;
1134 term->big_cursor = 0;
1135 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
1136 term->term_editing = term->term_echoing = FALSE;
1137 term->app_cursor_keys = term->cfg.app_cursor;
1138 term->app_keypad_keys = term->cfg.app_keypad;
1139 term->use_bce = term->cfg.bce;
1140 term->blink_is_real = term->cfg.blinktext;
1141 term->erase_char = term->basic_erase_char;
1142 term->alt_which = 0;
1143 term_print_finish(term);
1146 for (i = 0; i < 256; i++)
1147 term->wordness[i] = term->cfg.wordness[i];
1150 swap_screen(term, 1, FALSE, FALSE);
1151 erase_lots(term, FALSE, TRUE, TRUE);
1152 swap_screen(term, 0, FALSE, FALSE);
1153 erase_lots(term, FALSE, TRUE, TRUE);
1155 term_schedule_tblink(term);
1156 term_schedule_cblink(term);
1160 * Force a screen update.
1162 void term_update(Terminal *term)
1166 term->window_update_pending = FALSE;
1168 ctx = get_ctx(term->frontend);
1170 int need_sbar_update = term->seen_disp_event;
1171 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1172 term->disptop = 0; /* return to main screen */
1173 term->seen_disp_event = 0;
1174 need_sbar_update = TRUE;
1177 if (need_sbar_update)
1179 do_paint(term, ctx, TRUE);
1180 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1186 * Called from front end when a keypress occurs, to trigger
1187 * anything magical that needs to happen in that situation.
1189 void term_seen_key_event(Terminal *term)
1192 * On any keypress, clear the bell overload mechanism
1193 * completely, on the grounds that large numbers of
1194 * beeps coming from deliberate key action are likely
1195 * to be intended (e.g. beeps from filename completion
1196 * blocking repeatedly).
1198 term->beep_overloaded = FALSE;
1199 while (term->beephead) {
1200 struct beeptime *tmp = term->beephead;
1201 term->beephead = tmp->next;
1204 term->beeptail = NULL;
1208 * Reset the scrollback on keypress, if we're doing that.
1210 if (term->cfg.scroll_on_key) {
1211 term->disptop = 0; /* return to main screen */
1212 seen_disp_event(term);
1217 * Same as power_on(), but an external function.
1219 void term_pwron(Terminal *term)
1222 if (term->ldisc) /* cause ldisc to notice changes */
1223 ldisc_send(term->ldisc, NULL, 0, 0);
1229 static void set_erase_char(Terminal *term)
1231 term->erase_char = term->basic_erase_char;
1233 term->erase_char.attr = (term->curr_attr &
1234 (ATTR_FGMASK | ATTR_BGMASK));
1238 * When the user reconfigures us, we need to check the forbidden-
1239 * alternate-screen config option, disable raw mouse mode if the
1240 * user has disabled mouse reporting, and abandon a print job if
1241 * the user has disabled printing.
1243 void term_reconfig(Terminal *term, Config *cfg)
1246 * Before adopting the new config, check all those terminal
1247 * settings which control power-on defaults; and if they've
1248 * changed, we will modify the current state as well as the
1249 * default one. The full list is: Auto wrap mode, DEC Origin
1250 * Mode, BCE, blinking text, character classes.
1252 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1255 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1256 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1257 reset_bce = (term->cfg.bce != cfg->bce);
1258 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1259 reset_charclass = 0;
1260 for (i = 0; i < lenof(term->cfg.wordness); i++)
1261 if (term->cfg.wordness[i] != cfg->wordness[i])
1262 reset_charclass = 1;
1265 * If the bidi or shaping settings have changed, flush the bidi
1268 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1269 term->cfg.bidi != cfg->bidi) {
1270 for (i = 0; i < term->bidi_cache_size; i++) {
1271 sfree(term->pre_bidi_cache[i].chars);
1272 sfree(term->post_bidi_cache[i].chars);
1273 term->pre_bidi_cache[i].width = -1;
1274 term->pre_bidi_cache[i].chars = NULL;
1275 term->post_bidi_cache[i].width = -1;
1276 term->post_bidi_cache[i].chars = NULL;
1280 term->cfg = *cfg; /* STRUCTURE COPY */
1283 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1285 term->alt_om = term->dec_om = term->cfg.dec_om;
1287 term->use_bce = term->cfg.bce;
1288 set_erase_char(term);
1291 term->blink_is_real = term->cfg.blinktext;
1293 if (reset_charclass)
1294 for (i = 0; i < 256; i++)
1295 term->wordness[i] = term->cfg.wordness[i];
1297 if (term->cfg.no_alt_screen)
1298 swap_screen(term, 0, FALSE, FALSE);
1299 if (term->cfg.no_mouse_rep) {
1300 term->xterm_mouse = 0;
1301 set_raw_mouse_mode(term->frontend, 0);
1303 if (term->cfg.no_remote_charset) {
1304 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1305 term->sco_acs = term->alt_sco_acs = 0;
1308 if (!*term->cfg.printer) {
1309 term_print_finish(term);
1311 term_schedule_tblink(term);
1312 term_schedule_cblink(term);
1316 * Clear the scrollback.
1318 void term_clrsb(Terminal *term)
1322 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1323 sfree(line); /* this is compressed data, not a termline */
1325 term->tempsblines = 0;
1326 term->alt_sblines = 0;
1331 * Initialise the terminal.
1333 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1339 * Allocate a new Terminal structure and initialise the fields
1342 term = snew(Terminal);
1343 term->frontend = frontend;
1344 term->ucsdata = ucsdata;
1345 term->cfg = *mycfg; /* STRUCTURE COPY */
1346 term->logctx = NULL;
1347 term->compatibility_level = TM_PUTTY;
1348 strcpy(term->id_string, "\033[?6c");
1349 term->cblink_pending = term->tblink_pending = FALSE;
1350 term->paste_buffer = NULL;
1351 term->paste_len = 0;
1352 term->last_paste = 0;
1353 bufchain_init(&term->inbuf);
1354 bufchain_init(&term->printer_buf);
1355 term->printing = term->only_printing = FALSE;
1356 term->print_job = NULL;
1357 term->vt52_mode = FALSE;
1358 term->cr_lf_return = FALSE;
1359 term->seen_disp_event = FALSE;
1360 term->xterm_mouse = term->mouse_is_down = FALSE;
1361 term->reset_132 = FALSE;
1362 term->cblinker = term->tblinker = 0;
1363 term->has_focus = 1;
1364 term->repeat_off = FALSE;
1365 term->termstate = TOPLEVEL;
1366 term->selstate = NO_SELECTION;
1369 term->screen = term->alt_screen = term->scrollback = NULL;
1370 term->tempsblines = 0;
1371 term->alt_sblines = 0;
1373 term->disptext = NULL;
1374 term->dispcursx = term->dispcursy = -1;
1377 term->rows = term->cols = -1;
1379 term->beephead = term->beeptail = NULL;
1380 #ifdef OPTIMISE_SCROLL
1381 term->scrollhead = term->scrolltail = NULL;
1382 #endif /* OPTIMISE_SCROLL */
1384 term->lastbeep = FALSE;
1385 term->beep_overloaded = FALSE;
1386 term->attr_mask = 0xffffffff;
1387 term->resize_fn = NULL;
1388 term->resize_ctx = NULL;
1389 term->in_term_out = FALSE;
1391 term->ltemp_size = 0;
1392 term->wcFrom = NULL;
1394 term->wcFromTo_size = 0;
1396 term->window_update_pending = FALSE;
1398 term->bidi_cache_size = 0;
1399 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1402 term->basic_erase_char.chr = CSET_ASCII | ' ';
1403 term->basic_erase_char.attr = ATTR_DEFAULT;
1404 term->basic_erase_char.cc_next = 0;
1405 term->erase_char = term->basic_erase_char;
1410 void term_free(Terminal *term)
1413 struct beeptime *beep;
1416 while ((line = delpos234(term->scrollback, 0)) != NULL)
1417 sfree(line); /* compressed data, not a termline */
1418 freetree234(term->scrollback);
1419 while ((line = delpos234(term->screen, 0)) != NULL)
1421 freetree234(term->screen);
1422 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1424 freetree234(term->alt_screen);
1425 if (term->disptext) {
1426 for (i = 0; i < term->rows; i++)
1427 freeline(term->disptext[i]);
1429 sfree(term->disptext);
1430 while (term->beephead) {
1431 beep = term->beephead;
1432 term->beephead = beep->next;
1435 bufchain_clear(&term->inbuf);
1437 printer_finish_job(term->print_job);
1438 bufchain_clear(&term->printer_buf);
1439 sfree(term->paste_buffer);
1441 sfree(term->wcFrom);
1444 for (i = 0; i < term->bidi_cache_size; i++) {
1445 sfree(term->pre_bidi_cache[i].chars);
1446 sfree(term->post_bidi_cache[i].chars);
1448 sfree(term->pre_bidi_cache);
1449 sfree(term->post_bidi_cache);
1451 expire_timer_context(term);
1457 * Set up the terminal for a given size.
1459 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1462 termline **newdisp, *line;
1463 int i, j, oldrows = term->rows;
1465 int save_alt_which = term->alt_which;
1467 if (newrows == term->rows && newcols == term->cols &&
1468 newsavelines == term->savelines)
1469 return; /* nothing to do */
1472 swap_screen(term, 0, FALSE, FALSE);
1474 term->alt_t = term->marg_t = 0;
1475 term->alt_b = term->marg_b = newrows - 1;
1477 if (term->rows == -1) {
1478 term->scrollback = newtree234(NULL);
1479 term->screen = newtree234(NULL);
1480 term->tempsblines = 0;
1485 * Resize the screen and scrollback. We only need to shift
1486 * lines around within our data structures, because lineptr()
1487 * will take care of resizing each individual line if
1490 * - If the new screen is longer, we shunt lines in from temporary
1491 * scrollback if possible, otherwise we add new blank lines at
1494 * - If the new screen is shorter, we remove any blank lines at
1495 * the bottom if possible, otherwise shunt lines above the cursor
1496 * to scrollback if possible, otherwise delete lines below the
1499 * - Then, if the new scrollback length is less than the
1500 * amount of scrollback we actually have, we must throw some
1503 sblen = count234(term->scrollback);
1504 /* Do this loop to expand the screen if newrows > rows */
1505 assert(term->rows == count234(term->screen));
1506 while (term->rows < newrows) {
1507 if (term->tempsblines > 0) {
1508 unsigned char *cline;
1509 /* Insert a line from the scrollback at the top of the screen. */
1510 assert(sblen >= term->tempsblines);
1511 cline = delpos234(term->scrollback, --sblen);
1512 line = decompressline(cline, NULL);
1514 line->temporary = FALSE; /* reconstituted line is now real */
1515 term->tempsblines -= 1;
1516 addpos234(term->screen, line, 0);
1518 term->savecurs.y += 1;
1520 /* Add a new blank line at the bottom of the screen. */
1521 line = newline(term, newcols, FALSE);
1522 addpos234(term->screen, line, count234(term->screen));
1526 /* Do this loop to shrink the screen if newrows < rows */
1527 while (term->rows > newrows) {
1528 if (term->curs.y < term->rows - 1) {
1529 /* delete bottom row, unless it contains the cursor */
1530 sfree(delpos234(term->screen, term->rows - 1));
1532 /* push top row to scrollback */
1533 line = delpos234(term->screen, 0);
1534 addpos234(term->scrollback, compressline(line), sblen++);
1536 term->tempsblines += 1;
1538 term->savecurs.y -= 1;
1542 assert(term->rows == newrows);
1543 assert(count234(term->screen) == newrows);
1545 /* Delete any excess lines from the scrollback. */
1546 while (sblen > newsavelines) {
1547 line = delpos234(term->scrollback, 0);
1551 if (sblen < term->tempsblines)
1552 term->tempsblines = sblen;
1553 assert(count234(term->scrollback) <= newsavelines);
1554 assert(count234(term->scrollback) >= term->tempsblines);
1557 /* Make a new displayed text buffer. */
1558 newdisp = snewn(newrows, termline *);
1559 for (i = 0; i < newrows; i++) {
1560 newdisp[i] = newline(term, newcols, FALSE);
1561 for (j = 0; j < newcols; j++)
1562 newdisp[i]->chars[j].attr = ATTR_INVALID;
1564 if (term->disptext) {
1565 for (i = 0; i < oldrows; i++)
1566 freeline(term->disptext[i]);
1568 sfree(term->disptext);
1569 term->disptext = newdisp;
1570 term->dispcursx = term->dispcursy = -1;
1572 /* Make a new alternate screen. */
1573 newalt = newtree234(NULL);
1574 for (i = 0; i < newrows; i++) {
1575 line = newline(term, newcols, TRUE);
1576 addpos234(newalt, line, i);
1578 if (term->alt_screen) {
1579 while (NULL != (line = delpos234(term->alt_screen, 0)))
1581 freetree234(term->alt_screen);
1583 term->alt_screen = newalt;
1584 term->alt_sblines = 0;
1586 term->tabs = sresize(term->tabs, newcols, unsigned char);
1589 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1590 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1593 /* Check that the cursor positions are still valid. */
1594 if (term->savecurs.y < 0)
1595 term->savecurs.y = 0;
1596 if (term->savecurs.y >= newrows)
1597 term->savecurs.y = newrows - 1;
1598 if (term->curs.y < 0)
1600 if (term->curs.y >= newrows)
1601 term->curs.y = newrows - 1;
1602 if (term->curs.x >= newcols)
1603 term->curs.x = newcols - 1;
1604 term->alt_x = term->alt_y = 0;
1605 term->wrapnext = term->alt_wnext = FALSE;
1607 term->rows = newrows;
1608 term->cols = newcols;
1609 term->savelines = newsavelines;
1611 swap_screen(term, save_alt_which, FALSE, FALSE);
1615 if (term->resize_fn)
1616 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1620 * Hand a function and context pointer to the terminal which it can
1621 * use to notify a back end of resizes.
1623 void term_provide_resize_fn(Terminal *term,
1624 void (*resize_fn)(void *, int, int),
1627 term->resize_fn = resize_fn;
1628 term->resize_ctx = resize_ctx;
1629 if (term->cols > 0 && term->rows > 0)
1630 resize_fn(resize_ctx, term->cols, term->rows);
1633 /* Find the bottom line on the screen that has any content.
1634 * If only the top line has content, returns 0.
1635 * If no lines have content, return -1.
1637 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1640 for (i = count234(screen) - 1; i >= 0; i--) {
1641 termline *line = index234(screen, i);
1643 for (j = 0; j < line->cols; j++)
1644 if (!termchars_equal(&line->chars[j], &term->erase_char))
1646 if (j != line->cols) break;
1652 * Swap screens. If `reset' is TRUE and we have been asked to
1653 * switch to the alternate screen, we must bring most of its
1654 * configuration from the main screen and erase the contents of the
1655 * alternate screen completely. (This is even true if we're already
1656 * on it! Blame xterm.)
1658 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1664 reset = FALSE; /* do no weird resetting if which==0 */
1666 if (which != term->alt_which) {
1667 term->alt_which = which;
1669 ttr = term->alt_screen;
1670 term->alt_screen = term->screen;
1672 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1674 if (!reset && !keep_cur_pos)
1675 term->curs.x = term->alt_x;
1678 if (!reset && !keep_cur_pos)
1679 term->curs.y = term->alt_y;
1682 if (!reset) term->marg_t = term->alt_t;
1685 if (!reset) term->marg_b = term->alt_b;
1688 if (!reset) term->dec_om = term->alt_om;
1691 if (!reset) term->wrap = term->alt_wrap;
1694 if (!reset) term->wrapnext = term->alt_wnext;
1695 term->alt_wnext = t;
1697 if (!reset) term->insert = term->alt_ins;
1700 if (!reset) term->cset = term->alt_cset;
1703 if (!reset) term->utf = term->alt_utf;
1706 if (!reset) term->sco_acs = term->alt_sco_acs;
1707 term->alt_sco_acs = t;
1710 if (reset && term->screen) {
1712 * Yes, this _is_ supposed to honour background-colour-erase.
1714 erase_lots(term, FALSE, TRUE, TRUE);
1719 * Update the scroll bar.
1721 static void update_sbar(Terminal *term)
1723 int nscroll = sblines(term);
1724 set_sbar(term->frontend, nscroll + term->rows,
1725 nscroll + term->disptop, term->rows);
1729 * Check whether the region bounded by the two pointers intersects
1730 * the scroll region, and de-select the on-screen selection if so.
1732 static void check_selection(Terminal *term, pos from, pos to)
1734 if (poslt(from, term->selend) && poslt(term->selstart, to))
1739 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1740 * for backward.) `sb' is TRUE if the scrolling is permitted to
1741 * affect the scrollback buffer.
1743 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1746 int i, seltop, olddisptop, shift;
1748 if (topline != 0 || term->alt_which != 0)
1751 olddisptop = term->disptop;
1755 line = delpos234(term->screen, botline);
1756 resizeline(term, line, term->cols);
1757 for (i = 0; i < term->cols; i++)
1758 copy_termchar(line, i, &term->erase_char);
1759 line->lattr = LATTR_NORM;
1760 addpos234(term->screen, line, topline);
1762 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1764 if (term->selstart.y > botline) {
1765 term->selstart.y = botline + 1;
1766 term->selstart.x = 0;
1769 if (term->selend.y >= topline && term->selend.y <= botline) {
1771 if (term->selend.y > botline) {
1772 term->selend.y = botline + 1;
1781 line = delpos234(term->screen, topline);
1782 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
1783 if (sb && term->savelines > 0) {
1784 int sblen = count234(term->scrollback);
1786 * We must add this line to the scrollback. We'll
1787 * remove a line from the top of the scrollback if
1788 * the scrollback is full.
1790 if (sblen == term->savelines) {
1791 unsigned char *cline;
1794 cline = delpos234(term->scrollback, 0);
1797 term->tempsblines += 1;
1799 addpos234(term->scrollback, compressline(line), sblen);
1801 /* now `line' itself can be reused as the bottom line */
1804 * If the user is currently looking at part of the
1805 * scrollback, and they haven't enabled any options
1806 * that are going to reset the scrollback as a
1807 * result of this movement, then the chances are
1808 * they'd like to keep looking at the same line. So
1809 * we move their viewpoint at the same rate as the
1810 * scroll, at least until their viewpoint hits the
1811 * top end of the scrollback buffer, at which point
1812 * we don't have the choice any more.
1814 * Thanks to Jan Holmen Holsten for the idea and
1815 * initial implementation.
1817 if (term->disptop > -term->savelines && term->disptop < 0)
1820 resizeline(term, line, term->cols);
1821 for (i = 0; i < term->cols; i++)
1822 copy_termchar(line, i, &term->erase_char);
1823 line->lattr = LATTR_NORM;
1824 addpos234(term->screen, line, botline);
1827 * If the selection endpoints move into the scrollback,
1828 * we keep them moving until they hit the top. However,
1829 * of course, if the line _hasn't_ moved into the
1830 * scrollback then we don't do this, and cut them off
1831 * at the top of the scroll region.
1833 * This applies to selstart and selend (for an existing
1834 * selection), and also selanchor (for one being
1835 * selected as we speak).
1837 seltop = sb ? -term->savelines : topline;
1839 if (term->selstate != NO_SELECTION) {
1840 if (term->selstart.y >= seltop &&
1841 term->selstart.y <= botline) {
1843 if (term->selstart.y < seltop) {
1844 term->selstart.y = seltop;
1845 term->selstart.x = 0;
1848 if (term->selend.y >= seltop && term->selend.y <= botline) {
1850 if (term->selend.y < seltop) {
1851 term->selend.y = seltop;
1855 if (term->selanchor.y >= seltop &&
1856 term->selanchor.y <= botline) {
1857 term->selanchor.y--;
1858 if (term->selanchor.y < seltop) {
1859 term->selanchor.y = seltop;
1860 term->selanchor.x = 0;
1868 #ifdef OPTIMISE_SCROLL
1869 shift += term->disptop - olddisptop;
1870 if (shift < term->rows && shift > -term->rows && shift != 0)
1871 scroll_display(term, topline, botline, shift);
1872 #endif /* OPTIMISE_SCROLL */
1875 #ifdef OPTIMISE_SCROLL
1877 * Add a scroll of a region on the screen into the pending scroll list.
1878 * `lines' is +ve for scrolling forward, -ve for backward.
1880 * If the scroll is on the same area as the last scroll in the list,
1883 static void save_scroll(Terminal *term, int topline, int botline, int lines)
1885 struct scrollregion *newscroll;
1886 if (term->scrolltail &&
1887 term->scrolltail->topline == topline &&
1888 term->scrolltail->botline == botline) {
1889 term->scrolltail->lines += lines;
1891 newscroll = snew(struct scrollregion);
1892 newscroll->topline = topline;
1893 newscroll->botline = botline;
1894 newscroll->lines = lines;
1895 newscroll->next = NULL;
1897 if (!term->scrollhead)
1898 term->scrollhead = newscroll;
1900 term->scrolltail->next = newscroll;
1901 term->scrolltail = newscroll;
1906 * Scroll the physical display, and our conception of it in disptext.
1908 static void scroll_display(Terminal *term, int topline, int botline, int lines)
1910 int distance, nlines, i, j;
1912 distance = lines > 0 ? lines : -lines;
1913 nlines = botline - topline + 1 - distance;
1915 for (i = 0; i < nlines; i++)
1916 for (j = 0; j < term->cols; j++)
1917 copy_termchar(term->disptext[start+i], j,
1918 term->disptext[start+i+distance]->chars+j);
1919 if (term->dispcursy >= 0 &&
1920 term->dispcursy >= topline + distance &&
1921 term->dispcursy < topline + distance + nlines)
1922 term->dispcursy -= distance;
1923 for (i = 0; i < distance; i++)
1924 for (j = 0; j < term->cols; j++)
1925 term->disptext[start+nlines+i]->chars[j].attr |= ATTR_INVALID;
1927 for (i = nlines; i-- ;)
1928 for (j = 0; j < term->cols; j++)
1929 copy_termchar(term->disptext[start+i+distance], j,
1930 term->disptext[start+i]->chars+j);
1931 if (term->dispcursy >= 0 &&
1932 term->dispcursy >= topline &&
1933 term->dispcursy < topline + nlines)
1934 term->dispcursy += distance;
1935 for (i = 0; i < distance; i++)
1936 for (j = 0; j < term->cols; j++)
1937 term->disptext[start+i]->chars[j].attr |= ATTR_INVALID;
1939 save_scroll(term, topline, botline, lines);
1941 #endif /* OPTIMISE_SCROLL */
1944 * Move the cursor to a given position, clipping at boundaries. We
1945 * may or may not want to clip at the scroll margin: marg_clip is 0
1946 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
1947 * even _being_ outside the margins.
1949 static void move(Terminal *term, int x, int y, int marg_clip)
1953 if (x >= term->cols)
1956 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
1959 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
1965 if (y >= term->rows)
1969 term->wrapnext = FALSE;
1973 * Save or restore the cursor and SGR mode.
1975 static void save_cursor(Terminal *term, int save)
1978 term->savecurs = term->curs;
1979 term->save_attr = term->curr_attr;
1980 term->save_cset = term->cset;
1981 term->save_utf = term->utf;
1982 term->save_wnext = term->wrapnext;
1983 term->save_csattr = term->cset_attr[term->cset];
1984 term->save_sco_acs = term->sco_acs;
1986 term->curs = term->savecurs;
1987 /* Make sure the window hasn't shrunk since the save */
1988 if (term->curs.x >= term->cols)
1989 term->curs.x = term->cols - 1;
1990 if (term->curs.y >= term->rows)
1991 term->curs.y = term->rows - 1;
1993 term->curr_attr = term->save_attr;
1994 term->cset = term->save_cset;
1995 term->utf = term->save_utf;
1996 term->wrapnext = term->save_wnext;
1998 * wrapnext might reset to False if the x position is no
1999 * longer at the rightmost edge.
2001 if (term->wrapnext && term->curs.x < term->cols-1)
2002 term->wrapnext = FALSE;
2003 term->cset_attr[term->cset] = term->save_csattr;
2004 term->sco_acs = term->save_sco_acs;
2005 set_erase_char(term);
2010 * This function is called before doing _anything_ which affects
2011 * only part of a line of text. It is used to mark the boundary
2012 * between two character positions, and it indicates that some sort
2013 * of effect is going to happen on only one side of that boundary.
2015 * The effect of this function is to check whether a CJK
2016 * double-width character is straddling the boundary, and to remove
2017 * it and replace it with two spaces if so. (Of course, one or
2018 * other of those spaces is then likely to be replaced with
2019 * something else again, as a result of whatever happens next.)
2021 * Also, if the boundary is at the right-hand _edge_ of the screen,
2022 * it implies something deliberate is being done to the rightmost
2023 * column position; hence we must clear LATTR_WRAPPED2.
2025 * The input to the function is the coordinates of the _second_
2026 * character of the pair.
2028 static void check_boundary(Terminal *term, int x, int y)
2032 /* Validate input coordinates, just in case. */
2033 if (x == 0 || x > term->cols)
2036 ldata = scrlineptr(y);
2037 if (x == term->cols) {
2038 ldata->lattr &= ~LATTR_WRAPPED2;
2040 if (ldata->chars[x].chr == UCSWIDE) {
2041 clear_cc(ldata, x-1);
2043 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2044 ldata->chars[x] = ldata->chars[x-1];
2050 * Erase a large portion of the screen: the whole screen, or the
2051 * whole line, or parts thereof.
2053 static void erase_lots(Terminal *term,
2054 int line_only, int from_begin, int to_end)
2058 int erasing_lines_from_top = 0;
2061 start.y = term->curs.y;
2063 end.y = term->curs.y + 1;
2065 erase_lattr = FALSE;
2080 if (!from_begin || !to_end)
2081 check_boundary(term, term->curs.x, term->curs.y);
2082 check_selection(term, start, end);
2084 /* Clear screen also forces a full window redraw, just in case. */
2085 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2086 term_invalidate(term);
2088 /* Lines scrolled away shouldn't be brought back on if the terminal
2090 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2091 erasing_lines_from_top = 1;
2093 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2094 /* If it's a whole number of lines, starting at the top, and
2095 * we're fully erasing them, erase by scrolling and keep the
2096 * lines in the scrollback. */
2097 int scrolllines = end.y;
2098 if (end.y == term->rows) {
2099 /* Shrink until we find a non-empty row.*/
2100 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2102 if (scrolllines > 0)
2103 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2105 termline *ldata = scrlineptr(start.y);
2106 while (poslt(start, end)) {
2107 if (start.x == term->cols) {
2109 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2111 ldata->lattr = LATTR_NORM;
2113 copy_termchar(ldata, start.x, &term->erase_char);
2115 if (incpos(start) && start.y < term->rows) {
2116 ldata = scrlineptr(start.y);
2121 /* After an erase of lines from the top of the screen, we shouldn't
2122 * bring the lines back again if the terminal enlarges (since the user or
2123 * application has explictly thrown them away). */
2124 if (erasing_lines_from_top && !(term->alt_which))
2125 term->tempsblines = 0;
2129 * Insert or delete characters within the current line. n is +ve if
2130 * insertion is desired, and -ve for deletion.
2132 static void insch(Terminal *term, int n)
2134 int dir = (n < 0 ? -1 : +1);
2139 n = (n < 0 ? -n : n);
2140 if (n > term->cols - term->curs.x)
2141 n = term->cols - term->curs.x;
2142 m = term->cols - term->curs.x - n;
2143 cursplus.y = term->curs.y;
2144 cursplus.x = term->curs.x + n;
2145 check_selection(term, term->curs, cursplus);
2146 check_boundary(term, term->curs.x, term->curs.y);
2148 check_boundary(term, term->curs.x + n, term->curs.y);
2149 ldata = scrlineptr(term->curs.y);
2151 for (j = 0; j < m; j++)
2152 move_termchar(ldata,
2153 ldata->chars + term->curs.x + j,
2154 ldata->chars + term->curs.x + j + n);
2156 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2159 move_termchar(ldata,
2160 ldata->chars + term->curs.x + j + n,
2161 ldata->chars + term->curs.x + j);
2163 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2168 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2169 * whether the mode is a DEC private one or a normal one.)
2171 static void toggle_mode(Terminal *term, int mode, int query, int state)
2175 case 1: /* DECCKM: application cursor keys */
2176 term->app_cursor_keys = state;
2178 case 2: /* DECANM: VT52 mode */
2179 term->vt52_mode = !state;
2180 if (term->vt52_mode) {
2181 term->blink_is_real = FALSE;
2182 term->vt52_bold = FALSE;
2184 term->blink_is_real = term->cfg.blinktext;
2186 term_schedule_tblink(term);
2188 case 3: /* DECCOLM: 80/132 columns */
2190 if (!term->cfg.no_remote_resize)
2191 request_resize(term->frontend, state ? 132 : 80, term->rows);
2192 term->reset_132 = state;
2193 term->alt_t = term->marg_t = 0;
2194 term->alt_b = term->marg_b = term->rows - 1;
2195 move(term, 0, 0, 0);
2196 erase_lots(term, FALSE, TRUE, TRUE);
2198 case 5: /* DECSCNM: reverse video */
2200 * Toggle reverse video. If we receive an OFF within the
2201 * visual bell timeout period after an ON, we trigger an
2202 * effective visual bell, so that ESC[?5hESC[?5l will
2203 * always be an actually _visible_ visual bell.
2205 if (term->rvideo && !state) {
2206 /* This is an OFF, so set up a vbell */
2207 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2208 } else if (!term->rvideo && state) {
2209 /* This is an ON, so we notice the time and save it. */
2210 term->rvbell_startpoint = GETTICKCOUNT();
2212 term->rvideo = state;
2213 seen_disp_event(term);
2215 case 6: /* DECOM: DEC origin mode */
2216 term->dec_om = state;
2218 case 7: /* DECAWM: auto wrap */
2221 case 8: /* DECARM: auto key repeat */
2222 term->repeat_off = !state;
2224 case 10: /* DECEDM: set local edit mode */
2225 term->term_editing = state;
2226 if (term->ldisc) /* cause ldisc to notice changes */
2227 ldisc_send(term->ldisc, NULL, 0, 0);
2229 case 25: /* DECTCEM: enable/disable cursor */
2230 compatibility2(OTHER, VT220);
2231 term->cursor_on = state;
2232 seen_disp_event(term);
2234 case 47: /* alternate screen */
2235 compatibility(OTHER);
2237 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2240 case 1000: /* xterm mouse 1 */
2241 term->xterm_mouse = state ? 1 : 0;
2242 set_raw_mouse_mode(term->frontend, state);
2244 case 1002: /* xterm mouse 2 */
2245 term->xterm_mouse = state ? 2 : 0;
2246 set_raw_mouse_mode(term->frontend, state);
2248 case 1047: /* alternate screen */
2249 compatibility(OTHER);
2251 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2254 case 1048: /* save/restore cursor */
2255 if (!term->cfg.no_alt_screen)
2256 save_cursor(term, state);
2257 if (!state) seen_disp_event(term);
2259 case 1049: /* cursor & alternate screen */
2260 if (state && !term->cfg.no_alt_screen)
2261 save_cursor(term, state);
2262 if (!state) seen_disp_event(term);
2263 compatibility(OTHER);
2265 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2266 if (!state && !term->cfg.no_alt_screen)
2267 save_cursor(term, state);
2272 case 4: /* IRM: set insert mode */
2273 compatibility(VT102);
2274 term->insert = state;
2276 case 12: /* SRM: set echo mode */
2277 term->term_echoing = !state;
2278 if (term->ldisc) /* cause ldisc to notice changes */
2279 ldisc_send(term->ldisc, NULL, 0, 0);
2281 case 20: /* LNM: Return sends ... */
2282 term->cr_lf_return = state;
2284 case 34: /* WYULCURM: Make cursor BIG */
2285 compatibility2(OTHER, VT220);
2286 term->big_cursor = !state;
2291 * Process an OSC sequence: set window title or icon name.
2293 static void do_osc(Terminal *term)
2296 while (term->osc_strlen--)
2297 term->wordness[(unsigned char)
2298 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2300 term->osc_string[term->osc_strlen] = '\0';
2301 switch (term->esc_args[0]) {
2304 if (!term->cfg.no_remote_wintitle)
2305 set_icon(term->frontend, term->osc_string);
2306 if (term->esc_args[0] == 1)
2308 /* fall through: parameter 0 means set both */
2311 if (!term->cfg.no_remote_wintitle)
2312 set_title(term->frontend, term->osc_string);
2319 * ANSI printing routines.
2321 static void term_print_setup(Terminal *term)
2323 bufchain_clear(&term->printer_buf);
2324 term->print_job = printer_start_job(term->cfg.printer);
2326 static void term_print_flush(Terminal *term)
2331 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2332 bufchain_prefix(&term->printer_buf, &data, &len);
2335 printer_job_data(term->print_job, data, len);
2336 bufchain_consume(&term->printer_buf, len);
2339 static void term_print_finish(Terminal *term)
2345 if (!term->printing && !term->only_printing)
2346 return; /* we need do nothing */
2348 term_print_flush(term);
2349 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2350 bufchain_prefix(&term->printer_buf, &data, &len);
2352 if (c == '\033' || c == '\233') {
2353 bufchain_consume(&term->printer_buf, size);
2356 printer_job_data(term->print_job, &c, 1);
2357 bufchain_consume(&term->printer_buf, 1);
2360 printer_finish_job(term->print_job);
2361 term->print_job = NULL;
2362 term->printing = term->only_printing = FALSE;
2366 * Remove everything currently in `inbuf' and stick it up on the
2367 * in-memory display. There's a big state machine in here to
2368 * process escape sequences...
2370 static void term_out(Terminal *term)
2374 unsigned char localbuf[256], *chars;
2379 chars = NULL; /* placate compiler warnings */
2380 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
2384 bufchain_prefix(&term->inbuf, &ret, &nchars);
2385 if (nchars > sizeof(localbuf))
2386 nchars = sizeof(localbuf);
2387 memcpy(localbuf, ret, nchars);
2388 bufchain_consume(&term->inbuf, nchars);
2390 assert(chars != NULL);
2396 * Optionally log the session traffic to a file. Useful for
2397 * debugging and possibly also useful for actual logging.
2399 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2400 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2406 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2407 * be able to display 8-bit characters, but I'll let that go 'cause
2412 * If we're printing, add the character to the printer
2415 if (term->printing) {
2416 bufchain_add(&term->printer_buf, &c, 1);
2419 * If we're in print-only mode, we use a much simpler
2420 * state machine designed only to recognise the ESC[4i
2421 * termination sequence.
2423 if (term->only_printing) {
2425 term->print_state = 1;
2426 else if (c == (unsigned char)'\233')
2427 term->print_state = 2;
2428 else if (c == '[' && term->print_state == 1)
2429 term->print_state = 2;
2430 else if (c == '4' && term->print_state == 2)
2431 term->print_state = 3;
2432 else if (c == 'i' && term->print_state == 3)
2433 term->print_state = 4;
2435 term->print_state = 0;
2436 if (term->print_state == 4) {
2437 term_print_finish(term);
2443 /* First see about all those translations. */
2444 if (term->termstate == TOPLEVEL) {
2446 switch (term->utf_state) {
2449 /* UTF-8 must be stateless so we ignore iso2022. */
2450 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2451 c = term->ucsdata->unitab_ctrl[c];
2452 else c = ((unsigned char)c) | CSET_ASCII;
2454 } else if ((c & 0xe0) == 0xc0) {
2455 term->utf_size = term->utf_state = 1;
2456 term->utf_char = (c & 0x1f);
2457 } else if ((c & 0xf0) == 0xe0) {
2458 term->utf_size = term->utf_state = 2;
2459 term->utf_char = (c & 0x0f);
2460 } else if ((c & 0xf8) == 0xf0) {
2461 term->utf_size = term->utf_state = 3;
2462 term->utf_char = (c & 0x07);
2463 } else if ((c & 0xfc) == 0xf8) {
2464 term->utf_size = term->utf_state = 4;
2465 term->utf_char = (c & 0x03);
2466 } else if ((c & 0xfe) == 0xfc) {
2467 term->utf_size = term->utf_state = 5;
2468 term->utf_char = (c & 0x01);
2479 if ((c & 0xC0) != 0x80) {
2482 term->utf_state = 0;
2485 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2486 if (--term->utf_state)
2491 /* Is somebody trying to be evil! */
2493 (c < 0x800 && term->utf_size >= 2) ||
2494 (c < 0x10000 && term->utf_size >= 3) ||
2495 (c < 0x200000 && term->utf_size >= 4) ||
2496 (c < 0x4000000 && term->utf_size >= 5))
2499 /* Unicode line separator and paragraph separator are CR-LF */
2500 if (c == 0x2028 || c == 0x2029)
2503 /* High controls are probably a Baaad idea too. */
2507 /* The UTF-16 surrogates are not nice either. */
2508 /* The standard give the option of decoding these:
2509 * I don't want to! */
2510 if (c >= 0xD800 && c < 0xE000)
2513 /* ISO 10646 characters now limited to UTF-16 range. */
2517 /* This is currently a TagPhobic application.. */
2518 if (c >= 0xE0000 && c <= 0xE007F)
2521 /* U+FEFF is best seen as a null. */
2524 /* But U+FFFE is an error. */
2525 if (c == 0xFFFE || c == 0xFFFF)
2530 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2531 else if(term->sco_acs &&
2532 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2534 if (term->sco_acs == 2) c |= 0x80;
2537 switch (term->cset_attr[term->cset]) {
2539 * Linedraw characters are different from 'ESC ( B'
2540 * only for a small range. For ones outside that
2541 * range, make sure we use the same font as well as
2542 * the same encoding.
2545 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2546 c = term->ucsdata->unitab_ctrl[c];
2548 c = ((unsigned char) c) | CSET_LINEDRW;
2552 /* If UK-ASCII, make the '#' a LineDraw Pound */
2554 c = '}' | CSET_LINEDRW;
2557 /*FALLTHROUGH*/ case CSET_ASCII:
2558 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2559 c = term->ucsdata->unitab_ctrl[c];
2561 c = ((unsigned char) c) | CSET_ASCII;
2564 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2570 /* How about C1 controls ? */
2571 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2572 !term->vt52_mode && has_compat(VT220)) {
2573 term->termstate = SEEN_ESC;
2574 term->esc_query = FALSE;
2575 c = '@' + (c & 0x1F);
2578 /* Or the GL control. */
2579 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2580 if (term->curs.x && !term->wrapnext)
2582 term->wrapnext = FALSE;
2583 /* destructive backspace might be disabled */
2584 if (!term->cfg.no_dbackspace) {
2585 check_boundary(term, term->curs.x, term->curs.y);
2586 check_boundary(term, term->curs.x+1, term->curs.y);
2587 copy_termchar(scrlineptr(term->curs.y),
2588 term->curs.x, &term->erase_char);
2591 /* Or normal C0 controls. */
2592 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2594 case '\005': /* ENQ: terminal type query */
2595 /* Strictly speaking this is VT100 but a VT100 defaults to
2596 * no response. Other terminals respond at their option.
2598 * Don't put a CR in the default string as this tends to
2599 * upset some weird software.
2601 * An xterm returns "xterm" (5 characters)
2603 compatibility(ANSIMIN);
2605 char abuf[256], *s, *d;
2607 for (s = term->cfg.answerback, d = abuf; *s; s++) {
2609 if (*s >= 'a' && *s <= 'z')
2610 *d++ = (*s - ('a' - 1));
2611 else if ((*s >= '@' && *s <= '_') ||
2612 *s == '?' || (*s & 0x80))
2617 } else if (*s == '^') {
2622 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2626 case '\007': /* BEL: Bell */
2628 struct beeptime *newbeep;
2629 unsigned long ticks;
2631 ticks = GETTICKCOUNT();
2633 if (!term->beep_overloaded) {
2634 newbeep = snew(struct beeptime);
2635 newbeep->ticks = ticks;
2636 newbeep->next = NULL;
2637 if (!term->beephead)
2638 term->beephead = newbeep;
2640 term->beeptail->next = newbeep;
2641 term->beeptail = newbeep;
2646 * Throw out any beeps that happened more than
2649 while (term->beephead &&
2650 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2651 struct beeptime *tmp = term->beephead;
2652 term->beephead = tmp->next;
2654 if (!term->beephead)
2655 term->beeptail = NULL;
2659 if (term->cfg.bellovl && term->beep_overloaded &&
2660 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2662 * If we're currently overloaded and the
2663 * last beep was more than s seconds ago,
2664 * leave overload mode.
2666 term->beep_overloaded = FALSE;
2667 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2668 term->nbeeps >= term->cfg.bellovl_n) {
2670 * Now, if we have n or more beeps
2671 * remaining in the queue, go into overload
2674 term->beep_overloaded = TRUE;
2676 term->lastbeep = ticks;
2679 * Perform an actual beep if we're not overloaded.
2681 if (!term->cfg.bellovl || !term->beep_overloaded) {
2682 beep(term->frontend, term->cfg.beep);
2684 if (term->cfg.beep == BELL_VISUAL) {
2685 term_schedule_vbell(term, FALSE, 0);
2688 seen_disp_event(term);
2691 case '\b': /* BS: Back space */
2692 if (term->curs.x == 0 &&
2693 (term->curs.y == 0 || term->wrap == 0))
2695 else if (term->curs.x == 0 && term->curs.y > 0)
2696 term->curs.x = term->cols - 1, term->curs.y--;
2697 else if (term->wrapnext)
2698 term->wrapnext = FALSE;
2701 seen_disp_event(term);
2703 case '\016': /* LS1: Locking-shift one */
2704 compatibility(VT100);
2707 case '\017': /* LS0: Locking-shift zero */
2708 compatibility(VT100);
2711 case '\033': /* ESC: Escape */
2712 if (term->vt52_mode)
2713 term->termstate = VT52_ESC;
2715 compatibility(ANSIMIN);
2716 term->termstate = SEEN_ESC;
2717 term->esc_query = FALSE;
2720 case '\015': /* CR: Carriage return */
2722 term->wrapnext = FALSE;
2723 seen_disp_event(term);
2724 term->paste_hold = 0;
2726 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2728 case '\014': /* FF: Form feed */
2729 if (has_compat(SCOANSI)) {
2730 move(term, 0, 0, 0);
2731 erase_lots(term, FALSE, FALSE, TRUE);
2733 term->wrapnext = FALSE;
2734 seen_disp_event(term);
2737 case '\013': /* VT: Line tabulation */
2738 compatibility(VT100);
2739 case '\012': /* LF: Line feed */
2740 if (term->curs.y == term->marg_b)
2741 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2742 else if (term->curs.y < term->rows - 1)
2744 if (term->cfg.lfhascr)
2746 term->wrapnext = FALSE;
2747 seen_disp_event(term);
2748 term->paste_hold = 0;
2750 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2752 case '\t': /* HT: Character tabulation */
2754 pos old_curs = term->curs;
2755 termline *ldata = scrlineptr(term->curs.y);
2759 } while (term->curs.x < term->cols - 1 &&
2760 !term->tabs[term->curs.x]);
2762 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2763 if (term->curs.x >= term->cols / 2)
2764 term->curs.x = term->cols / 2 - 1;
2766 if (term->curs.x >= term->cols)
2767 term->curs.x = term->cols - 1;
2770 check_selection(term, old_curs, term->curs);
2772 seen_disp_event(term);
2776 switch (term->termstate) {
2778 /* Only graphic characters get this far;
2779 * ctrls are stripped above */
2781 termline *cline = scrlineptr(term->curs.y);
2786 width = wcwidth((wchar_t) c);
2788 if (term->wrapnext && term->wrap && width > 0) {
2789 cline->lattr |= LATTR_WRAPPED;
2790 if (term->curs.y == term->marg_b)
2791 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2792 else if (term->curs.y < term->rows - 1)
2795 term->wrapnext = FALSE;
2796 cline = scrlineptr(term->curs.y);
2798 if (term->insert && width > 0)
2800 if (term->selstate != NO_SELECTION) {
2801 pos cursplus = term->curs;
2803 check_selection(term, term->curs, cursplus);
2805 if (((c & CSET_MASK) == CSET_ASCII ||
2806 (c & CSET_MASK) == 0) &&
2808 logtraffic(term->logctx, (unsigned char) c,
2814 * If we're about to display a double-width
2815 * character starting in the rightmost
2816 * column, then we do something special
2817 * instead. We must print a space in the
2818 * last column of the screen, then wrap;
2819 * and we also set LATTR_WRAPPED2 which
2820 * instructs subsequent cut-and-pasting not
2821 * only to splice this line to the one
2822 * after it, but to ignore the space in the
2823 * last character position as well.
2824 * (Because what was actually output to the
2825 * terminal was presumably just a sequence
2826 * of CJK characters, and we don't want a
2827 * space to be pasted in the middle of
2828 * those just because they had the
2829 * misfortune to start in the wrong parity
2830 * column. xterm concurs.)
2832 check_boundary(term, term->curs.x, term->curs.y);
2833 check_boundary(term, term->curs.x+2, term->curs.y);
2834 if (term->curs.x == term->cols-1) {
2835 copy_termchar(cline, term->curs.x,
2837 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2838 if (term->curs.y == term->marg_b)
2839 scroll(term, term->marg_t, term->marg_b,
2841 else if (term->curs.y < term->rows - 1)
2844 /* Now we must check_boundary again, of course. */
2845 check_boundary(term, term->curs.x, term->curs.y);
2846 check_boundary(term, term->curs.x+2, term->curs.y);
2850 clear_cc(cline, term->curs.x);
2851 cline->chars[term->curs.x].chr = c;
2852 cline->chars[term->curs.x].attr = term->curr_attr;
2857 clear_cc(cline, term->curs.x);
2858 cline->chars[term->curs.x].chr = UCSWIDE;
2859 cline->chars[term->curs.x].attr = term->curr_attr;
2863 check_boundary(term, term->curs.x, term->curs.y);
2864 check_boundary(term, term->curs.x+1, term->curs.y);
2867 clear_cc(cline, term->curs.x);
2868 cline->chars[term->curs.x].chr = c;
2869 cline->chars[term->curs.x].attr = term->curr_attr;
2873 if (term->curs.x > 0) {
2874 int x = term->curs.x - 1;
2876 /* If we're in wrapnext state, the character
2877 * to combine with is _here_, not to our left. */
2882 * If the previous character is
2883 * UCSWIDE, back up another one.
2885 if (cline->chars[x].chr == UCSWIDE) {
2890 add_cc(cline, x, c);
2891 seen_disp_event(term);
2898 if (term->curs.x == term->cols) {
2900 term->wrapnext = TRUE;
2901 if (term->wrap && term->vt52_mode) {
2902 cline->lattr |= LATTR_WRAPPED;
2903 if (term->curs.y == term->marg_b)
2904 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2905 else if (term->curs.y < term->rows - 1)
2908 term->wrapnext = FALSE;
2911 seen_disp_event(term);
2917 * This state is virtually identical to SEEN_ESC, with the
2918 * exception that we have an OSC sequence in the pipeline,
2919 * and _if_ we see a backslash, we process it.
2923 term->termstate = TOPLEVEL;
2926 /* else fall through */
2928 if (c >= ' ' && c <= '/') {
2929 if (term->esc_query)
2930 term->esc_query = -1;
2932 term->esc_query = c;
2935 term->termstate = TOPLEVEL;
2936 switch (ANSI(c, term->esc_query)) {
2937 case '[': /* enter CSI mode */
2938 term->termstate = SEEN_CSI;
2939 term->esc_nargs = 1;
2940 term->esc_args[0] = ARG_DEFAULT;
2941 term->esc_query = FALSE;
2943 case ']': /* OSC: xterm escape sequences */
2944 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
2945 compatibility(OTHER);
2946 term->termstate = SEEN_OSC;
2947 term->esc_args[0] = 0;
2949 case '7': /* DECSC: save cursor */
2950 compatibility(VT100);
2951 save_cursor(term, TRUE);
2953 case '8': /* DECRC: restore cursor */
2954 compatibility(VT100);
2955 save_cursor(term, FALSE);
2956 seen_disp_event(term);
2958 case '=': /* DECKPAM: Keypad application mode */
2959 compatibility(VT100);
2960 term->app_keypad_keys = TRUE;
2962 case '>': /* DECKPNM: Keypad numeric mode */
2963 compatibility(VT100);
2964 term->app_keypad_keys = FALSE;
2966 case 'D': /* IND: exactly equivalent to LF */
2967 compatibility(VT100);
2968 if (term->curs.y == term->marg_b)
2969 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2970 else if (term->curs.y < term->rows - 1)
2972 term->wrapnext = FALSE;
2973 seen_disp_event(term);
2975 case 'E': /* NEL: exactly equivalent to CR-LF */
2976 compatibility(VT100);
2978 if (term->curs.y == term->marg_b)
2979 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2980 else if (term->curs.y < term->rows - 1)
2982 term->wrapnext = FALSE;
2983 seen_disp_event(term);
2985 case 'M': /* RI: reverse index - backwards LF */
2986 compatibility(VT100);
2987 if (term->curs.y == term->marg_t)
2988 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
2989 else if (term->curs.y > 0)
2991 term->wrapnext = FALSE;
2992 seen_disp_event(term);
2994 case 'Z': /* DECID: terminal type query */
2995 compatibility(VT100);
2997 ldisc_send(term->ldisc, term->id_string,
2998 strlen(term->id_string), 0);
3000 case 'c': /* RIS: restore power-on settings */
3001 compatibility(VT100);
3003 if (term->ldisc) /* cause ldisc to notice changes */
3004 ldisc_send(term->ldisc, NULL, 0, 0);
3005 if (term->reset_132) {
3006 if (!term->cfg.no_remote_resize)
3007 request_resize(term->frontend, 80, term->rows);
3008 term->reset_132 = 0;
3011 seen_disp_event(term);
3013 case 'H': /* HTS: set a tab */
3014 compatibility(VT100);
3015 term->tabs[term->curs.x] = TRUE;
3018 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3019 compatibility(VT100);
3025 for (i = 0; i < term->rows; i++) {
3026 ldata = scrlineptr(i);
3027 for (j = 0; j < term->cols; j++) {
3028 copy_termchar(ldata, j,
3029 &term->basic_erase_char);
3030 ldata->chars[j].chr = 'E';
3032 ldata->lattr = LATTR_NORM;
3035 seen_disp_event(term);
3036 scrtop.x = scrtop.y = 0;
3038 scrbot.y = term->rows;
3039 check_selection(term, scrtop, scrbot);
3043 case ANSI('3', '#'):
3044 case ANSI('4', '#'):
3045 case ANSI('5', '#'):
3046 case ANSI('6', '#'):
3047 compatibility(VT100);
3051 switch (ANSI(c, term->esc_query)) {
3052 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3055 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3058 case ANSI('5', '#'): /* DECSWL: normal */
3059 nlattr = LATTR_NORM;
3061 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3062 nlattr = LATTR_WIDE;
3065 scrlineptr(term->curs.y)->lattr = nlattr;
3068 /* GZD4: G0 designate 94-set */
3069 case ANSI('A', '('):
3070 compatibility(VT100);
3071 if (!term->cfg.no_remote_charset)
3072 term->cset_attr[0] = CSET_GBCHR;
3074 case ANSI('B', '('):
3075 compatibility(VT100);
3076 if (!term->cfg.no_remote_charset)
3077 term->cset_attr[0] = CSET_ASCII;
3079 case ANSI('0', '('):
3080 compatibility(VT100);
3081 if (!term->cfg.no_remote_charset)
3082 term->cset_attr[0] = CSET_LINEDRW;
3084 case ANSI('U', '('):
3085 compatibility(OTHER);
3086 if (!term->cfg.no_remote_charset)
3087 term->cset_attr[0] = CSET_SCOACS;
3089 /* G1D4: G1-designate 94-set */
3090 case ANSI('A', ')'):
3091 compatibility(VT100);
3092 if (!term->cfg.no_remote_charset)
3093 term->cset_attr[1] = CSET_GBCHR;
3095 case ANSI('B', ')'):
3096 compatibility(VT100);
3097 if (!term->cfg.no_remote_charset)
3098 term->cset_attr[1] = CSET_ASCII;
3100 case ANSI('0', ')'):
3101 compatibility(VT100);
3102 if (!term->cfg.no_remote_charset)
3103 term->cset_attr[1] = CSET_LINEDRW;
3105 case ANSI('U', ')'):
3106 compatibility(OTHER);
3107 if (!term->cfg.no_remote_charset)
3108 term->cset_attr[1] = CSET_SCOACS;
3110 /* DOCS: Designate other coding system */
3111 case ANSI('8', '%'): /* Old Linux code */
3112 case ANSI('G', '%'):
3113 compatibility(OTHER);
3114 if (!term->cfg.no_remote_charset)
3117 case ANSI('@', '%'):
3118 compatibility(OTHER);
3119 if (!term->cfg.no_remote_charset)
3125 term->termstate = TOPLEVEL; /* default */
3127 if (term->esc_nargs <= ARGS_MAX) {
3128 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3129 term->esc_args[term->esc_nargs - 1] = 0;
3130 term->esc_args[term->esc_nargs - 1] =
3131 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3133 term->termstate = SEEN_CSI;
3134 } else if (c == ';') {
3135 if (++term->esc_nargs <= ARGS_MAX)
3136 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3137 term->termstate = SEEN_CSI;
3138 } else if (c < '@') {
3139 if (term->esc_query)
3140 term->esc_query = -1;
3142 term->esc_query = TRUE;
3144 term->esc_query = c;
3145 term->termstate = SEEN_CSI;
3147 switch (ANSI(c, term->esc_query)) {
3148 case 'A': /* CUU: move up N lines */
3149 move(term, term->curs.x,
3150 term->curs.y - def(term->esc_args[0], 1), 1);
3151 seen_disp_event(term);
3153 case 'e': /* VPR: move down N lines */
3154 compatibility(ANSI);
3156 case 'B': /* CUD: Cursor down */
3157 move(term, term->curs.x,
3158 term->curs.y + def(term->esc_args[0], 1), 1);
3159 seen_disp_event(term);
3161 case ANSI('c', '>'): /* DA: report xterm version */
3162 compatibility(OTHER);
3163 /* this reports xterm version 136 so that VIM can
3164 use the drag messages from the mouse reporting */
3166 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3168 case 'a': /* HPR: move right N cols */
3169 compatibility(ANSI);
3171 case 'C': /* CUF: Cursor right */
3172 move(term, term->curs.x + def(term->esc_args[0], 1),
3174 seen_disp_event(term);
3176 case 'D': /* CUB: move left N cols */
3177 move(term, term->curs.x - def(term->esc_args[0], 1),
3179 seen_disp_event(term);
3181 case 'E': /* CNL: move down N lines and CR */
3182 compatibility(ANSI);
3184 term->curs.y + def(term->esc_args[0], 1), 1);
3185 seen_disp_event(term);
3187 case 'F': /* CPL: move up N lines and CR */
3188 compatibility(ANSI);
3190 term->curs.y - def(term->esc_args[0], 1), 1);
3191 seen_disp_event(term);
3194 case '`': /* HPA: set horizontal posn */
3195 compatibility(ANSI);
3196 move(term, def(term->esc_args[0], 1) - 1,
3198 seen_disp_event(term);
3200 case 'd': /* VPA: set vertical posn */
3201 compatibility(ANSI);
3202 move(term, term->curs.x,
3203 ((term->dec_om ? term->marg_t : 0) +
3204 def(term->esc_args[0], 1) - 1),
3205 (term->dec_om ? 2 : 0));
3206 seen_disp_event(term);
3209 case 'f': /* HVP: set horz and vert posns at once */
3210 if (term->esc_nargs < 2)
3211 term->esc_args[1] = ARG_DEFAULT;
3212 move(term, def(term->esc_args[1], 1) - 1,
3213 ((term->dec_om ? term->marg_t : 0) +
3214 def(term->esc_args[0], 1) - 1),
3215 (term->dec_om ? 2 : 0));
3216 seen_disp_event(term);
3218 case 'J': /* ED: erase screen or parts of it */
3220 unsigned int i = def(term->esc_args[0], 0) + 1;
3223 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3226 seen_disp_event(term);
3228 case 'K': /* EL: erase line or parts of it */
3230 unsigned int i = def(term->esc_args[0], 0) + 1;
3233 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3235 seen_disp_event(term);
3237 case 'L': /* IL: insert lines */
3238 compatibility(VT102);
3239 if (term->curs.y <= term->marg_b)
3240 scroll(term, term->curs.y, term->marg_b,
3241 -def(term->esc_args[0], 1), FALSE);
3242 seen_disp_event(term);
3244 case 'M': /* DL: delete lines */
3245 compatibility(VT102);
3246 if (term->curs.y <= term->marg_b)
3247 scroll(term, term->curs.y, term->marg_b,
3248 def(term->esc_args[0], 1),
3250 seen_disp_event(term);
3252 case '@': /* ICH: insert chars */
3253 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3254 compatibility(VT102);
3255 insch(term, def(term->esc_args[0], 1));
3256 seen_disp_event(term);
3258 case 'P': /* DCH: delete chars */
3259 compatibility(VT102);
3260 insch(term, -def(term->esc_args[0], 1));
3261 seen_disp_event(term);
3263 case 'c': /* DA: terminal type query */
3264 compatibility(VT100);
3265 /* This is the response for a VT102 */
3267 ldisc_send(term->ldisc, term->id_string,
3268 strlen(term->id_string), 0);
3270 case 'n': /* DSR: cursor position query */
3272 if (term->esc_args[0] == 6) {
3274 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3276 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3277 } else if (term->esc_args[0] == 5) {
3278 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3282 case 'h': /* SM: toggle modes to high */
3284 compatibility(VT100);
3287 for (i = 0; i < term->esc_nargs; i++)
3288 toggle_mode(term, term->esc_args[i],
3289 term->esc_query, TRUE);
3292 case 'i': /* MC: Media copy */
3294 compatibility(VT100);
3296 if (term->esc_nargs != 1) break;
3297 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3298 term->printing = TRUE;
3299 term->only_printing = !term->esc_query;
3300 term->print_state = 0;
3301 term_print_setup(term);
3302 } else if (term->esc_args[0] == 4 &&
3304 term_print_finish(term);
3308 case 'l': /* RM: toggle modes to low */
3310 compatibility(VT100);
3313 for (i = 0; i < term->esc_nargs; i++)
3314 toggle_mode(term, term->esc_args[i],
3315 term->esc_query, FALSE);
3318 case 'g': /* TBC: clear tabs */
3319 compatibility(VT100);
3320 if (term->esc_nargs == 1) {
3321 if (term->esc_args[0] == 0) {
3322 term->tabs[term->curs.x] = FALSE;
3323 } else if (term->esc_args[0] == 3) {
3325 for (i = 0; i < term->cols; i++)
3326 term->tabs[i] = FALSE;
3330 case 'r': /* DECSTBM: set scroll margins */
3331 compatibility(VT100);
3332 if (term->esc_nargs <= 2) {
3334 top = def(term->esc_args[0], 1) - 1;
3335 bot = (term->esc_nargs <= 1
3336 || term->esc_args[1] == 0 ?
3338 def(term->esc_args[1], term->rows)) - 1;
3339 if (bot >= term->rows)
3340 bot = term->rows - 1;
3341 /* VTTEST Bug 9 - if region is less than 2 lines
3342 * don't change region.
3344 if (bot - top > 0) {
3349 * I used to think the cursor should be
3350 * placed at the top of the newly marginned
3351 * area. Apparently not: VMS TPU falls over
3354 * Well actually it should for
3357 term->curs.y = (term->dec_om ?
3359 seen_disp_event(term);
3363 case 'm': /* SGR: set graphics rendition */
3366 * A VT100 without the AVO only had one
3367 * attribute, either underline or
3368 * reverse video depending on the
3369 * cursor type, this was selected by
3373 * This is sometimes DIM, eg on the
3376 * This is sometimes INVIS various ANSI.
3378 * This like 22 disables BOLD, DIM and INVIS
3380 * The ANSI colours appear on any
3381 * terminal that has colour (obviously)
3382 * but the interaction between sgr0 and
3383 * the colours varies but is usually
3384 * related to the background colour
3385 * erase item. The interaction between
3386 * colour attributes and the mono ones
3387 * is also very implementation
3390 * The 39 and 49 attributes are likely
3391 * to be unimplemented.
3394 for (i = 0; i < term->esc_nargs; i++) {
3395 switch (def(term->esc_args[i], 0)) {
3396 case 0: /* restore defaults */
3397 term->curr_attr = term->default_attr;
3399 case 1: /* enable bold */
3400 compatibility(VT100AVO);
3401 term->curr_attr |= ATTR_BOLD;
3403 case 21: /* (enable double underline) */
3404 compatibility(OTHER);
3405 case 4: /* enable underline */
3406 compatibility(VT100AVO);
3407 term->curr_attr |= ATTR_UNDER;
3409 case 5: /* enable blink */
3410 compatibility(VT100AVO);
3411 term->curr_attr |= ATTR_BLINK;
3413 case 6: /* SCO light bkgrd */
3414 compatibility(SCOANSI);
3415 term->blink_is_real = FALSE;
3416 term->curr_attr |= ATTR_BLINK;
3417 term_schedule_tblink(term);
3419 case 7: /* enable reverse video */
3420 term->curr_attr |= ATTR_REVERSE;
3422 case 10: /* SCO acs off */
3423 compatibility(SCOANSI);
3424 if (term->cfg.no_remote_charset) break;
3425 term->sco_acs = 0; break;
3426 case 11: /* SCO acs on */
3427 compatibility(SCOANSI);
3428 if (term->cfg.no_remote_charset) break;
3429 term->sco_acs = 1; break;
3430 case 12: /* SCO acs on, |0x80 */
3431 compatibility(SCOANSI);
3432 if (term->cfg.no_remote_charset) break;
3433 term->sco_acs = 2; break;
3434 case 22: /* disable bold */
3435 compatibility2(OTHER, VT220);
3436 term->curr_attr &= ~ATTR_BOLD;
3438 case 24: /* disable underline */
3439 compatibility2(OTHER, VT220);
3440 term->curr_attr &= ~ATTR_UNDER;
3442 case 25: /* disable blink */
3443 compatibility2(OTHER, VT220);
3444 term->curr_attr &= ~ATTR_BLINK;
3446 case 27: /* disable reverse video */
3447 compatibility2(OTHER, VT220);
3448 term->curr_attr &= ~ATTR_REVERSE;
3459 term->curr_attr &= ~ATTR_FGMASK;
3461 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3471 /* xterm-style bright foreground */
3472 term->curr_attr &= ~ATTR_FGMASK;
3474 ((term->esc_args[i] - 90 + 16)
3477 case 39: /* default-foreground */
3478 term->curr_attr &= ~ATTR_FGMASK;
3479 term->curr_attr |= ATTR_DEFFG;
3490 term->curr_attr &= ~ATTR_BGMASK;
3492 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3502 /* xterm-style bright background */
3503 term->curr_attr &= ~ATTR_BGMASK;
3505 ((term->esc_args[i] - 100 + 16)
3508 case 49: /* default-background */
3509 term->curr_attr &= ~ATTR_BGMASK;
3510 term->curr_attr |= ATTR_DEFBG;
3514 set_erase_char(term);
3517 case 's': /* save cursor */
3518 save_cursor(term, TRUE);
3520 case 'u': /* restore cursor */
3521 save_cursor(term, FALSE);
3522 seen_disp_event(term);
3524 case 't': /* DECSLPP: set page size - ie window height */
3526 * VT340/VT420 sequence DECSLPP, DEC only allows values
3527 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3528 * illegal values (eg first arg 1..9) for window changing
3531 if (term->esc_nargs <= 1
3532 && (term->esc_args[0] < 1 ||
3533 term->esc_args[0] >= 24)) {
3534 compatibility(VT340TEXT);
3535 if (!term->cfg.no_remote_resize)
3536 request_resize(term->frontend, term->cols,
3537 def(term->esc_args[0], 24));
3539 } else if (term->esc_nargs >= 1 &&
3540 term->esc_args[0] >= 1 &&
3541 term->esc_args[0] < 24) {
3542 compatibility(OTHER);
3544 switch (term->esc_args[0]) {
3548 set_iconic(term->frontend, FALSE);
3551 set_iconic(term->frontend, TRUE);
3554 if (term->esc_nargs >= 3) {
3555 if (!term->cfg.no_remote_resize)
3556 move_window(term->frontend,
3557 def(term->esc_args[1], 0),
3558 def(term->esc_args[2], 0));
3562 /* We should resize the window to a given
3563 * size in pixels here, but currently our
3564 * resizing code isn't healthy enough to
3569 set_zorder(term->frontend, TRUE);
3572 /* move to bottom */
3573 set_zorder(term->frontend, FALSE);
3576 refresh_window(term->frontend);
3579 if (term->esc_nargs >= 3) {
3580 if (!term->cfg.no_remote_resize)
3581 request_resize(term->frontend,
3582 def(term->esc_args[2], term->cfg.width),
3583 def(term->esc_args[1], term->cfg.height));
3587 if (term->esc_nargs >= 2)
3588 set_zoomed(term->frontend,
3594 ldisc_send(term->ldisc,
3595 is_iconic(term->frontend) ?
3596 "\033[1t" : "\033[2t", 4, 0);
3600 get_window_pos(term->frontend, &x, &y);
3601 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3602 ldisc_send(term->ldisc, buf, len, 0);
3607 get_window_pixels(term->frontend, &x, &y);
3608 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3609 ldisc_send(term->ldisc, buf, len, 0);
3614 len = sprintf(buf, "\033[8;%d;%dt",
3615 term->rows, term->cols);
3616 ldisc_send(term->ldisc, buf, len, 0);
3621 * Hmmm. Strictly speaking we
3622 * should return `the size of the
3623 * screen in characters', but
3624 * that's not easy: (a) window
3625 * furniture being what it is it's
3626 * hard to compute, and (b) in
3627 * resize-font mode maximising the
3628 * window wouldn't change the
3629 * number of characters. *shrug*. I
3630 * think we'll ignore it for the
3631 * moment and see if anyone
3632 * complains, and then ask them
3633 * what they would like it to do.
3638 !term->cfg.no_remote_qtitle) {
3639 p = get_window_title(term->frontend, TRUE);
3641 ldisc_send(term->ldisc, "\033]L", 3, 0);
3642 ldisc_send(term->ldisc, p, len, 0);
3643 ldisc_send(term->ldisc, "\033\\", 2, 0);
3648 !term->cfg.no_remote_qtitle) {
3649 p = get_window_title(term->frontend,FALSE);
3651 ldisc_send(term->ldisc, "\033]l", 3, 0);
3652 ldisc_send(term->ldisc, p, len, 0);
3653 ldisc_send(term->ldisc, "\033\\", 2, 0);
3659 case 'S': /* SU: Scroll up */
3660 compatibility(SCOANSI);
3661 scroll(term, term->marg_t, term->marg_b,
3662 def(term->esc_args[0], 1), TRUE);
3663 term->wrapnext = FALSE;
3664 seen_disp_event(term);
3666 case 'T': /* SD: Scroll down */
3667 compatibility(SCOANSI);
3668 scroll(term, term->marg_t, term->marg_b,
3669 -def(term->esc_args[0], 1), TRUE);
3670 term->wrapnext = FALSE;
3671 seen_disp_event(term);
3673 case ANSI('|', '*'): /* DECSNLS */
3675 * Set number of lines on screen
3676 * VT420 uses VGA like hardware and can
3677 * support any size in reasonable range
3678 * (24..49 AIUI) with no default specified.
3680 compatibility(VT420);
3681 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3682 if (!term->cfg.no_remote_resize)
3683 request_resize(term->frontend, term->cols,
3684 def(term->esc_args[0],
3689 case ANSI('|', '$'): /* DECSCPP */
3691 * Set number of columns per page
3692 * Docs imply range is only 80 or 132, but
3695 compatibility(VT340TEXT);
3696 if (term->esc_nargs <= 1) {
3697 if (!term->cfg.no_remote_resize)
3698 request_resize(term->frontend,
3699 def(term->esc_args[0],
3700 term->cfg.width), term->rows);
3704 case 'X': /* ECH: write N spaces w/o moving cursor */
3705 /* XXX VTTEST says this is vt220, vt510 manual
3707 compatibility(ANSIMIN);
3709 int n = def(term->esc_args[0], 1);
3711 int p = term->curs.x;
3712 termline *cline = scrlineptr(term->curs.y);
3714 if (n > term->cols - term->curs.x)
3715 n = term->cols - term->curs.x;
3716 cursplus = term->curs;
3718 check_boundary(term, term->curs.x, term->curs.y);
3719 check_boundary(term, term->curs.x+n, term->curs.y);
3720 check_selection(term, term->curs, cursplus);
3722 copy_termchar(cline, p++,
3724 seen_disp_event(term);
3727 case 'x': /* DECREQTPARM: report terminal characteristics */
3728 compatibility(VT100);
3731 int i = def(term->esc_args[0], 0);
3732 if (i == 0 || i == 1) {
3733 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3735 ldisc_send(term->ldisc, buf, 20, 0);
3739 case 'Z': /* CBT: BackTab for xterm */
3740 compatibility(OTHER);
3742 int i = def(term->esc_args[0], 1);
3743 pos old_curs = term->curs;
3745 for(;i>0 && term->curs.x>0; i--) {
3748 } while (term->curs.x >0 &&
3749 !term->tabs[term->curs.x]);
3751 check_selection(term, old_curs, term->curs);
3754 case ANSI('c', '='): /* Hide or Show Cursor */
3755 compatibility(SCOANSI);
3756 switch(term->esc_args[0]) {
3757 case 0: /* hide cursor */
3758 term->cursor_on = FALSE;
3760 case 1: /* restore cursor */
3761 term->big_cursor = FALSE;
3762 term->cursor_on = TRUE;
3764 case 2: /* block cursor */
3765 term->big_cursor = TRUE;
3766 term->cursor_on = TRUE;
3770 case ANSI('C', '='):
3772 * set cursor start on scanline esc_args[0] and
3773 * end on scanline esc_args[1].If you set
3774 * the bottom scan line to a value less than
3775 * the top scan line, the cursor will disappear.
3777 compatibility(SCOANSI);
3778 if (term->esc_nargs >= 2) {
3779 if (term->esc_args[0] > term->esc_args[1])
3780 term->cursor_on = FALSE;
3782 term->cursor_on = TRUE;
3785 case ANSI('D', '='):
3786 compatibility(SCOANSI);
3787 term->blink_is_real = FALSE;
3788 term_schedule_tblink(term);
3789 if (term->esc_args[0]>=1)
3790 term->curr_attr |= ATTR_BLINK;
3792 term->curr_attr &= ~ATTR_BLINK;
3794 case ANSI('E', '='):
3795 compatibility(SCOANSI);
3796 term->blink_is_real = (term->esc_args[0] >= 1);
3797 term_schedule_tblink(term);
3799 case ANSI('F', '='): /* set normal foreground */
3800 compatibility(SCOANSI);
3801 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3803 (sco2ansicolour[term->esc_args[0] & 0x7] |
3804 ((term->esc_args[0] & 0x8) << 1)) <<
3806 term->curr_attr &= ~ATTR_FGMASK;
3807 term->curr_attr |= colour;
3808 term->default_attr &= ~ATTR_FGMASK;
3809 term->default_attr |= colour;
3812 case ANSI('G', '='): /* set normal background */
3813 compatibility(SCOANSI);
3814 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3816 (sco2ansicolour[term->esc_args[0] & 0x7] |
3817 ((term->esc_args[0] & 0x8) << 1)) <<
3819 term->curr_attr &= ~ATTR_BGMASK;
3820 term->curr_attr |= colour;
3821 term->default_attr &= ~ATTR_BGMASK;
3822 term->default_attr |= colour;
3825 case ANSI('L', '='):
3826 compatibility(SCOANSI);
3827 term->use_bce = (term->esc_args[0] <= 0);
3828 set_erase_char(term);
3830 case ANSI('p', '"'): /* DECSCL: set compat level */
3832 * Allow the host to make this emulator a
3833 * 'perfect' VT102. This first appeared in
3834 * the VT220, but we do need to get back to
3835 * PuTTY mode so I won't check it.
3837 * The arg in 40..42,50 are a PuTTY extension.
3838 * The 2nd arg, 8bit vs 7bit is not checked.
3840 * Setting VT102 mode should also change
3841 * the Fkeys to generate PF* codes as a
3842 * real VT102 has no Fkeys. The VT220 does
3843 * this, F11..F13 become ESC,BS,LF other
3844 * Fkeys send nothing.
3846 * Note ESC c will NOT change this!
3849 switch (term->esc_args[0]) {
3851 term->compatibility_level &= ~TM_VTXXX;
3852 term->compatibility_level |= TM_VT102;
3855 term->compatibility_level &= ~TM_VTXXX;
3856 term->compatibility_level |= TM_VT220;
3860 if (term->esc_args[0] > 60 &&
3861 term->esc_args[0] < 70)
3862 term->compatibility_level |= TM_VTXXX;
3866 term->compatibility_level &= TM_VTXXX;
3869 term->compatibility_level = TM_PUTTY;
3872 term->compatibility_level = TM_SCOANSI;
3876 term->compatibility_level = TM_PUTTY;
3882 /* Change the response to CSI c */
3883 if (term->esc_args[0] == 50) {
3886 strcpy(term->id_string, "\033[?");
3887 for (i = 1; i < term->esc_nargs; i++) {
3889 strcat(term->id_string, ";");
3890 sprintf(lbuf, "%d", term->esc_args[i]);
3891 strcat(term->id_string, lbuf);
3893 strcat(term->id_string, "c");
3896 /* Is this a good idea ?
3897 * Well we should do a soft reset at this point ...
3899 if (!has_compat(VT420) && has_compat(VT100)) {
3900 if (!term->cfg.no_remote_resize) {
3901 if (term->reset_132)
3902 request_resize(132, 24);
3904 request_resize(80, 24);
3912 term->osc_w = FALSE;
3914 case 'P': /* Linux palette sequence */
3915 term->termstate = SEEN_OSC_P;
3916 term->osc_strlen = 0;
3918 case 'R': /* Linux palette reset */
3919 palette_reset(term->frontend);
3920 term_invalidate(term);
3921 term->termstate = TOPLEVEL;
3923 case 'W': /* word-set */
3924 term->termstate = SEEN_OSC_W;
3937 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
3941 * Grotty hack to support xterm and DECterm title
3942 * sequences concurrently.
3944 if (term->esc_args[0] == 2) {
3945 term->esc_args[0] = 1;
3948 /* else fall through */
3950 term->termstate = OSC_STRING;
3951 term->osc_strlen = 0;
3956 * This OSC stuff is EVIL. It takes just one character to get into
3957 * sysline mode and it's not initially obvious how to get out.
3958 * So I've added CR and LF as string aborts.
3959 * This shouldn't effect compatibility as I believe embedded
3960 * control characters are supposed to be interpreted (maybe?)
3961 * and they don't display anything useful anyway.
3965 if (c == '\012' || c == '\015') {
3966 term->termstate = TOPLEVEL;
3967 } else if (c == 0234 || c == '\007') {
3969 * These characters terminate the string; ST and BEL
3970 * terminate the sequence and trigger instant
3971 * processing of it, whereas ESC goes back to SEEN_ESC
3972 * mode unless it is followed by \, in which case it is
3973 * synonymous with ST in the first place.
3976 term->termstate = TOPLEVEL;
3977 } else if (c == '\033')
3978 term->termstate = OSC_MAYBE_ST;
3979 else if (term->osc_strlen < OSC_STR_MAX)
3980 term->osc_string[term->osc_strlen++] = (char)c;
3984 int max = (term->osc_strlen == 0 ? 21 : 16);
3986 if ((int)c >= '0' && (int)c <= '9')
3988 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
3990 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
3993 term->termstate = TOPLEVEL;
3996 term->osc_string[term->osc_strlen++] = val;
3997 if (term->osc_strlen >= 7) {
3998 palette_set(term->frontend, term->osc_string[0],
3999 term->osc_string[1] * 16 + term->osc_string[2],
4000 term->osc_string[3] * 16 + term->osc_string[4],
4001 term->osc_string[5] * 16 + term->osc_string[6]);
4002 term_invalidate(term);
4003 term->termstate = TOPLEVEL;
4019 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4022 term->termstate = OSC_STRING;
4023 term->osc_strlen = 0;
4027 term->termstate = TOPLEVEL;
4028 seen_disp_event(term);
4031 move(term, term->curs.x, term->curs.y - 1, 1);
4034 move(term, term->curs.x, term->curs.y + 1, 1);
4037 move(term, term->curs.x + 1, term->curs.y, 1);
4040 move(term, term->curs.x - 1, term->curs.y, 1);
4043 * From the VT100 Manual
4044 * NOTE: The special graphics characters in the VT100
4045 * are different from those in the VT52
4047 * From VT102 manual:
4048 * 137 _ Blank - Same
4049 * 140 ` Reserved - Humm.
4050 * 141 a Solid rectangle - Similar
4051 * 142 b 1/ - Top half of fraction for the
4052 * 143 c 3/ - subscript numbers below.
4055 * 146 f Degrees - Same
4056 * 147 g Plus or minus - Same
4058 * 151 i Ellipsis (dots)
4061 * 154 l Bar at scan 0
4062 * 155 m Bar at scan 1
4063 * 156 n Bar at scan 2
4064 * 157 o Bar at scan 3 - Similar
4065 * 160 p Bar at scan 4 - Similar
4066 * 161 q Bar at scan 5 - Similar
4067 * 162 r Bar at scan 6 - Same
4068 * 163 s Bar at scan 7 - Similar
4083 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4086 term->cset_attr[term->cset = 0] = CSET_ASCII;
4089 move(term, 0, 0, 0);
4092 if (term->curs.y == 0)
4093 scroll(term, 0, term->rows - 1, -1, TRUE);
4094 else if (term->curs.y > 0)
4096 term->wrapnext = FALSE;
4099 erase_lots(term, FALSE, FALSE, TRUE);
4103 erase_lots(term, TRUE, FALSE, TRUE);
4107 /* XXX Print cursor line */
4110 /* XXX Start controller mode */
4113 /* XXX Stop controller mode */
4117 term->termstate = VT52_Y1;
4121 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4124 term->app_keypad_keys = TRUE;
4127 term->app_keypad_keys = FALSE;
4130 /* XXX This should switch to VT100 mode not current or default
4131 * VT mode. But this will only have effect in a VT220+
4134 term->vt52_mode = FALSE;
4135 term->blink_is_real = term->cfg.blinktext;
4136 term_schedule_tblink(term);
4140 /* XXX Enter auto print mode */
4143 /* XXX Exit auto print mode */
4146 /* XXX Print screen */
4152 /* compatibility(ATARI) */
4153 move(term, 0, 0, 0);
4154 erase_lots(term, FALSE, FALSE, TRUE);
4158 /* compatibility(ATARI) */
4159 if (term->curs.y <= term->marg_b)
4160 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4163 /* compatibility(ATARI) */
4164 if (term->curs.y <= term->marg_b)
4165 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4168 /* compatibility(ATARI) */
4169 term->termstate = VT52_FG;
4172 /* compatibility(ATARI) */
4173 term->termstate = VT52_BG;
4176 /* compatibility(ATARI) */
4177 erase_lots(term, FALSE, TRUE, FALSE);
4181 /* compatibility(ATARI) */
4182 term->cursor_on = TRUE;
4185 /* compatibility(ATARI) */
4186 term->cursor_on = FALSE;
4188 /* case 'j': Save cursor position - broken on ST */
4189 /* case 'k': Restore cursor position */
4191 /* compatibility(ATARI) */
4192 erase_lots(term, TRUE, TRUE, TRUE);
4194 term->wrapnext = FALSE;
4197 /* compatibility(ATARI) */
4198 erase_lots(term, TRUE, TRUE, FALSE);
4201 /* compatibility(ATARI) */
4202 term->curr_attr |= ATTR_REVERSE;
4205 /* compatibility(ATARI) */
4206 term->curr_attr &= ~ATTR_REVERSE;
4208 case 'v': /* wrap Autowrap on - Wyse style */
4209 /* compatibility(ATARI) */
4212 case 'w': /* Autowrap off */
4213 /* compatibility(ATARI) */
4218 /* compatibility(OTHER) */
4219 term->vt52_bold = FALSE;
4220 term->curr_attr = ATTR_DEFAULT;
4221 set_erase_char(term);
4224 /* compatibility(VI50) */
4225 term->curr_attr |= ATTR_UNDER;
4228 /* compatibility(VI50) */
4229 term->curr_attr &= ~ATTR_UNDER;
4232 /* compatibility(VI50) */
4233 term->vt52_bold = TRUE;
4234 term->curr_attr |= ATTR_BOLD;
4237 /* compatibility(VI50) */
4238 term->vt52_bold = FALSE;
4239 term->curr_attr &= ~ATTR_BOLD;
4245 term->termstate = VT52_Y2;
4246 move(term, term->curs.x, c - ' ', 0);
4249 term->termstate = TOPLEVEL;
4250 move(term, c - ' ', term->curs.y, 0);
4255 term->termstate = TOPLEVEL;
4256 term->curr_attr &= ~ATTR_FGMASK;
4257 term->curr_attr &= ~ATTR_BOLD;
4258 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
4259 if ((c & 0x8) || term->vt52_bold)
4260 term->curr_attr |= ATTR_BOLD;
4262 set_erase_char(term);
4265 term->termstate = TOPLEVEL;
4266 term->curr_attr &= ~ATTR_BGMASK;
4267 term->curr_attr &= ~ATTR_BLINK;
4268 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
4270 /* Note: bold background */
4272 term->curr_attr |= ATTR_BLINK;
4274 set_erase_char(term);
4277 default: break; /* placate gcc warning about enum use */
4279 if (term->selstate != NO_SELECTION) {
4280 pos cursplus = term->curs;
4282 check_selection(term, term->curs, cursplus);
4286 term_print_flush(term);
4287 logflush(term->logctx);
4291 * To prevent having to run the reasonably tricky bidi algorithm
4292 * too many times, we maintain a cache of the last lineful of data
4293 * fed to the algorithm on each line of the display.
4295 static int term_bidi_cache_hit(Terminal *term, int line,
4296 termchar *lbefore, int width)
4300 if (!term->pre_bidi_cache)
4301 return FALSE; /* cache doesn't even exist yet! */
4303 if (line >= term->bidi_cache_size)
4304 return FALSE; /* cache doesn't have this many lines */
4306 if (!term->pre_bidi_cache[line].chars)
4307 return FALSE; /* cache doesn't contain _this_ line */
4309 if (term->pre_bidi_cache[line].width != width)
4310 return FALSE; /* line is wrong width */
4312 for (i = 0; i < width; i++)
4313 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4314 return FALSE; /* line doesn't match cache */
4316 return TRUE; /* it didn't match. */
4319 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4320 termchar *lafter, int width)
4322 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4323 int j = term->bidi_cache_size;
4324 term->bidi_cache_size = line+1;
4325 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4326 term->bidi_cache_size,
4327 struct bidi_cache_entry);
4328 term->post_bidi_cache = sresize(term->post_bidi_cache,
4329 term->bidi_cache_size,
4330 struct bidi_cache_entry);
4331 while (j < term->bidi_cache_size) {
4332 term->pre_bidi_cache[j].chars =
4333 term->post_bidi_cache[j].chars = NULL;
4334 term->pre_bidi_cache[j].width =
4335 term->post_bidi_cache[j].width = -1;
4340 sfree(term->pre_bidi_cache[line].chars);
4341 sfree(term->post_bidi_cache[line].chars);
4343 term->pre_bidi_cache[line].width = width;
4344 term->pre_bidi_cache[line].chars = snewn(width, termchar);
4345 term->post_bidi_cache[line].width = width;
4346 term->post_bidi_cache[line].chars = snewn(width, termchar);
4348 memcpy(term->pre_bidi_cache[line].chars, lbefore, width * TSIZE);
4349 memcpy(term->post_bidi_cache[line].chars, lafter, width * TSIZE);
4353 * Given a context, update the window. Out of paranoia, we don't
4354 * allow WM_PAINT responses to do scrolling optimisations.
4356 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4358 int i, it, j, our_curs_y, our_curs_x;
4363 termchar cursor_background;
4364 #ifdef OPTIMISE_SCROLL
4365 struct scrollregion *sr;
4366 #endif /* OPTIMISE_SCROLL */
4368 cursor_background = term->basic_erase_char;
4371 ch = snewn(chlen, wchar_t);
4373 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4376 * screen array, disptop, scrtop,
4378 * cfg.blinkpc, blink_is_real, tblinker,
4379 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4382 /* Has the cursor position or type changed ? */
4383 if (term->cursor_on) {
4384 if (term->has_focus) {
4385 if (term->cblinker || !term->cfg.blink_cur)
4386 cursor = TATTR_ACTCURS;
4390 cursor = TATTR_PASCURS;
4392 cursor |= TATTR_RIGHTCURS;
4395 our_curs_y = term->curs.y - term->disptop;
4398 * Adjust the cursor position in the case where it's
4399 * resting on the right-hand half of a CJK wide character.
4400 * xterm's behaviour here, which seems adequate to me, is
4401 * to display the cursor covering the _whole_ character,
4402 * exactly as if it were one space to the left.
4404 termline *ldata = lineptr(term->curs.y);
4405 our_curs_x = term->curs.x;
4406 if (our_curs_x > 0 &&
4407 ldata->chars[our_curs_x].chr == UCSWIDE)
4413 * If the cursor is not where it was last time we painted, and
4414 * its previous position is visible on screen, invalidate its
4415 * previous position.
4417 if (term->dispcursy >= 0 &&
4418 (term->curstype != cursor ||
4419 term->dispcursy != our_curs_y ||
4420 term->dispcursx != our_curs_x)) {
4421 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4424 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4425 dispcurs[-1].attr |= ATTR_INVALID;
4426 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4427 dispcurs[1].attr |= ATTR_INVALID;
4428 dispcurs->attr |= ATTR_INVALID;
4432 term->dispcursx = term->dispcursy = -1;
4434 #ifdef OPTIMISE_SCROLL
4436 sr = term->scrollhead;
4438 struct scrollregion *next = sr->next;
4439 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4443 term->scrollhead = term->scrolltail = NULL;
4444 #endif /* OPTIMISE_SCROLL */
4446 /* The normal screen data */
4447 for (i = 0; i < term->rows; i++) {
4450 int dirty_line, dirty_run, selected;
4451 unsigned long attr = 0, cset = 0;
4452 int updated_line = 0;
4455 int last_run_dirty = 0;
4457 scrpos.y = i + term->disptop;
4458 ldata = lineptr(scrpos.y);
4460 dirty_run = dirty_line = (ldata->lattr !=
4461 term->disptext[i]->lattr);
4462 term->disptext[i]->lattr = ldata->lattr;
4464 /* Do Arabic shaping and bidi. */
4465 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4467 if (!term_bidi_cache_hit(term, i, ldata->chars, term->cols)) {
4469 if (term->wcFromTo_size < term->cols) {
4470 term->wcFromTo_size = term->cols;
4471 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4473 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4477 for(it=0; it<term->cols ; it++)
4479 unsigned long uc = (ldata->chars[it].chr);
4481 switch (uc & CSET_MASK) {
4483 if (!term->cfg.rawcnp) {
4484 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4488 uc = term->ucsdata->unitab_line[uc & 0xFF];
4491 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4494 switch (uc & CSET_MASK) {
4496 uc = term->ucsdata->unitab_font[uc & 0xFF];
4499 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4503 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4505 term->wcFrom[it].index = it;
4509 do_bidi(term->wcFrom, term->cols);
4511 /* this is saved iff done from inside the shaping */
4512 if(!term->cfg.bidi && term->cfg.arabicshaping)
4513 for(it=0; it<term->cols; it++)
4514 term->wcTo[it] = term->wcFrom[it];
4516 if(!term->cfg.arabicshaping)
4517 do_shape(term->wcFrom, term->wcTo, term->cols);
4519 if (term->ltemp_size < ldata->size) {
4520 term->ltemp_size = ldata->size;
4521 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4525 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4527 for(it=0; it<term->cols ; it++)
4529 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4530 if (term->ltemp[it].cc_next)
4531 term->ltemp[it].cc_next -=
4532 it - term->wcTo[it].index;
4534 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4535 term->ltemp[it].chr = term->wcTo[it].wc;
4537 term_bidi_cache_store(term, i, ldata->chars,
4538 term->ltemp, ldata->size);
4540 lchars = term->ltemp;
4542 lchars = term->post_bidi_cache[i].chars;
4545 lchars = ldata->chars;
4547 for (j = 0; j < term->cols; j++) {
4548 unsigned long tattr, tchar;
4549 termchar *d = lchars + j;
4550 int break_run, do_copy;
4556 if (!term->cfg.ansi_colour)
4557 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4558 ATTR_DEFFG | ATTR_DEFBG;
4560 switch (tchar & CSET_MASK) {
4562 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4565 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4568 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4571 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4574 /* Video reversing things */
4575 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4576 if (term->seltype == LEXICOGRAPHIC)
4577 selected = (posle(term->selstart, scrpos) &&
4578 poslt(scrpos, term->selend));
4580 selected = (posPle(term->selstart, scrpos) &&
4581 posPlt(scrpos, term->selend));
4585 ^ (selected ? ATTR_REVERSE : 0));
4587 /* 'Real' blinking ? */
4588 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4589 if (term->has_focus && term->tblinker) {
4590 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4592 tattr &= ~ATTR_BLINK;
4596 * Check the font we'll _probably_ be using to see if
4597 * the character is wide when we don't want it to be.
4599 if (tchar != term->disptext[i]->chars[j].chr ||
4600 tattr != (term->disptext[i]->chars[j].attr &~
4602 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4603 tattr |= ATTR_NARROW;
4604 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4605 tattr |= ATTR_NARROW;
4607 /* Cursor here ? Save the 'background' */
4608 if (i == our_curs_y && j == our_curs_x) {
4610 cursor_background.chr = tchar;
4611 cursor_background.attr = tattr;
4612 /* For once, this cc_next field is an absolute index in lchars */
4614 cursor_background.cc_next = d->cc_next + j;
4616 cursor_background.cc_next = 0;
4617 term->dispcursx = j;
4618 term->dispcursy = i;
4621 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4624 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4626 /* Special hack for VT100 Linedraw glyphs */
4627 if (tchar >= 0x23BA && tchar <= 0x23BD)
4631 * Separate out sequences of characters that have the
4632 * same CSET, if that CSET is a magic one.
4634 if (CSET_OF(tchar) != cset)
4638 * Break on both sides of any combined-character cell.
4640 if (d->cc_next != 0 ||
4641 (j > 0 && d[-1].cc_next != 0))
4644 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4645 if (term->disptext[i]->chars[j].chr == tchar &&
4646 term->disptext[i]->chars[j].attr == tattr)
4648 else if (!dirty_run && ccount == 1)
4653 if ((dirty_run || last_run_dirty) && ccount > 0) {
4654 do_text(ctx, start, i, ch, ccount, attr, ldata->lattr);
4660 cset = CSET_OF(tchar);
4661 if (term->ucsdata->dbcs_screenfont)
4662 last_run_dirty = dirty_run;
4663 dirty_run = dirty_line;
4667 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4673 if (ccount >= chlen) {
4674 chlen = ccount + 256;
4675 ch = sresize(ch, chlen, wchar_t);
4677 ch[ccount++] = (wchar_t) tchar;
4682 while (dd->cc_next) {
4683 unsigned long schar;
4688 switch (schar & CSET_MASK) {
4690 schar = term->ucsdata->unitab_line[schar & 0xFF];
4693 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4696 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4700 if (ccount >= chlen) {
4701 chlen = ccount + 256;
4702 ch = sresize(ch, chlen, wchar_t);
4704 ch[ccount++] = (wchar_t) schar;
4707 attr |= TATTR_COMBINING;
4711 copy_termchar(term->disptext[i], j, d);
4712 term->disptext[i]->chars[j].chr = tchar;
4713 term->disptext[i]->chars[j].attr = tattr;
4716 /* If it's a wide char step along to the next one. */
4717 if (tattr & ATTR_WIDE) {
4718 if (++j < term->cols) {
4721 * By construction above, the cursor should not
4722 * be on the right-hand half of this character.
4725 assert(!(i == our_curs_y && j == our_curs_x));
4726 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4728 copy_termchar(term->disptext[i], j, d);
4732 if (dirty_run && ccount > 0) {
4733 do_text(ctx, start, i, ch, ccount, attr, ldata->lattr);
4737 /* Cursor on this line ? (and changed) */
4738 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
4739 ch[0] = (wchar_t) cursor_background.chr;
4740 attr = cursor_background.attr | cursor;
4743 if (cursor_background.cc_next) {
4744 termchar *dd = ldata->chars + cursor_background.cc_next;
4747 unsigned long schar;
4750 switch (schar & CSET_MASK) {
4752 schar = term->ucsdata->unitab_line[schar & 0xFF];
4755 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4758 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4762 if (ccount >= chlen) {
4763 chlen = ccount + 256;
4764 ch = sresize(ch, chlen, wchar_t);
4766 ch[ccount++] = (wchar_t) schar;
4774 attr |= TATTR_COMBINING;
4777 do_cursor(ctx, our_curs_x, i, ch, ccount, attr, ldata->lattr);
4778 term->curstype = cursor;
4788 * Invalidate the whole screen so it will be repainted in full.
4790 void term_invalidate(Terminal *term)
4794 for (i = 0; i < term->rows; i++)
4795 for (j = 0; j < term->cols; j++)
4796 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4800 * Paint the window in response to a WM_PAINT message.
4802 void term_paint(Terminal *term, Context ctx,
4803 int left, int top, int right, int bottom, int immediately)
4806 if (left < 0) left = 0;
4807 if (top < 0) top = 0;
4808 if (right >= term->cols) right = term->cols-1;
4809 if (bottom >= term->rows) bottom = term->rows-1;
4811 for (i = top; i <= bottom && i < term->rows; i++) {
4812 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
4813 for (j = left; j <= right && j < term->cols; j++)
4814 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4816 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
4817 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4821 do_paint (term, ctx, FALSE);
4823 if (!term->window_update_pending) {
4824 term->window_update_pending = TRUE;
4825 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
4831 * Attempt to scroll the scrollback. The second parameter gives the
4832 * position we want to scroll to; the first is +1 to denote that
4833 * this position is relative to the beginning of the scrollback, -1
4834 * to denote it is relative to the end, and 0 to denote that it is
4835 * relative to the current position.
4837 void term_scroll(Terminal *term, int rel, int where)
4839 int sbtop = -sblines(term);
4840 #ifdef OPTIMISE_SCROLL
4841 int olddisptop = term->disptop;
4843 #endif /* OPTIMISE_SCROLL */
4845 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
4846 if (term->disptop < sbtop)
4847 term->disptop = sbtop;
4848 if (term->disptop > 0)
4851 #ifdef OPTIMISE_SCROLL
4852 shift = (term->disptop - olddisptop);
4853 if (shift < term->rows && shift > -term->rows)
4854 scroll_display(term, 0, term->rows - 1, shift);
4855 #endif /* OPTIMISE_SCROLL */
4859 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
4862 wchar_t *wbptr; /* where next char goes within workbuf */
4864 int wblen = 0; /* workbuf len */
4865 int buflen; /* amount of memory allocated to workbuf */
4867 buflen = 5120; /* Default size */
4868 workbuf = snewn(buflen, wchar_t);
4869 wbptr = workbuf; /* start filling here */
4870 old_top_x = top.x; /* needed for rect==1 */
4872 while (poslt(top, bottom)) {
4874 termline *ldata = lineptr(top.y);
4878 * nlpos will point at the maximum position on this line we
4879 * should copy up to. So we start it at the end of the
4883 nlpos.x = term->cols;
4886 * ... move it backwards if there's unused space at the end
4887 * of the line (and also set `nl' if this is the case,
4888 * because in normal selection mode this means we need a
4889 * newline at the end)...
4891 if (!(ldata->lattr & LATTR_WRAPPED)) {
4892 while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
4893 !ldata->chars[nlpos.x - 1].cc_next &&
4896 if (poslt(nlpos, bottom))
4898 } else if (ldata->lattr & LATTR_WRAPPED2) {
4899 /* Ignore the last char on the line in a WRAPPED2 line. */
4904 * ... and then clip it to the terminal x coordinate if
4905 * we're doing rectangular selection. (In this case we
4906 * still did the above, so that copying e.g. the right-hand
4907 * column from a table doesn't fill with spaces on the
4911 if (nlpos.x > bottom.x)
4913 nl = (top.y < bottom.y);
4916 while (poslt(top, bottom) && poslt(top, nlpos)) {
4919 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
4921 wchar_t cbuf[16], *p;
4925 if (ldata->chars[x].chr == UCSWIDE) {
4931 int uc = ldata->chars[x].chr;
4933 switch (uc & CSET_MASK) {
4935 if (!term->cfg.rawcnp) {
4936 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4940 uc = term->ucsdata->unitab_line[uc & 0xFF];
4943 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4946 switch (uc & CSET_MASK) {
4948 uc = term->ucsdata->unitab_font[uc & 0xFF];
4951 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4955 set = (uc & CSET_MASK);
4956 c = (uc & ~CSET_MASK);
4960 if (DIRECT_FONT(uc)) {
4961 if (c >= ' ' && c != 0x7F) {
4965 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
4967 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
4968 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
4972 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
4976 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
4983 for (p = cbuf; *p; p++) {
4984 /* Enough overhead for trailing NL and nul */
4985 if (wblen >= buflen - 16) {
4987 workbuf = sresize(workbuf, buflen, wchar_t);
4988 wbptr = workbuf + wblen;
4994 if (ldata->chars[x].cc_next)
4995 x += ldata->chars[x].cc_next;
5003 for (i = 0; i < sel_nl_sz; i++) {
5005 *wbptr++ = sel_nl[i];
5009 top.x = rect ? old_top_x : 0;
5013 #if SELECTION_NUL_TERMINATED
5017 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
5018 if (buflen > 0) /* indicates we allocated this buffer */
5022 void term_copyall(Terminal *term)
5026 tree234 *screen = term->screen;
5027 top.y = -sblines(term);
5029 bottom.y = find_last_nonempty_line(term, screen);
5030 bottom.x = term->cols;
5031 clipme(term, top, bottom, 0, TRUE);
5035 * The wordness array is mainly for deciding the disposition of the
5036 * US-ASCII characters.
5038 static int wordtype(Terminal *term, int uc)
5041 int start, end, ctype;
5043 static const struct ucsword ucs_words[] = {
5049 0x037e, 0x037e, 1}, /* Greek question mark */
5051 0x0387, 0x0387, 1}, /* Greek ano teleia */
5053 0x055a, 0x055f, 1}, /* Armenian punctuation */
5055 0x0589, 0x0589, 1}, /* Armenian full stop */
5057 0x0700, 0x070d, 1}, /* Syriac punctuation */
5059 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5061 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5063 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5065 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5067 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5069 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5071 0x2000, 0x200a, 0}, /* Various spaces */
5073 0x2070, 0x207f, 2}, /* superscript */
5075 0x2080, 0x208f, 2}, /* subscript */
5077 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5079 0x3000, 0x3000, 0}, /* ideographic space */
5081 0x3001, 0x3020, 1}, /* ideographic punctuation */
5083 0x303f, 0x309f, 3}, /* Hiragana */
5085 0x30a0, 0x30ff, 3}, /* Katakana */
5087 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5089 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5091 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5093 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5095 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5097 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5099 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5101 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5103 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5107 const struct ucsword *wptr;
5109 switch (uc & CSET_MASK) {
5111 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5114 uc = term->ucsdata->unitab_line[uc & 0xFF];
5117 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5120 switch (uc & CSET_MASK) {
5122 uc = term->ucsdata->unitab_font[uc & 0xFF];
5125 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5129 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5130 * fail as there's such a thing as a double width space. :-(
5132 if (term->ucsdata->dbcs_screenfont &&
5133 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5137 return term->wordness[uc];
5139 for (wptr = ucs_words; wptr->start; wptr++) {
5140 if (uc >= wptr->start && uc <= wptr->end)
5148 * Spread the selection outwards according to the selection mode.
5150 static pos sel_spread_half(Terminal *term, pos p, int dir)
5154 int topy = -sblines(term);
5156 ldata = lineptr(p.y);
5158 switch (term->selmode) {
5161 * In this mode, every character is a separate unit, except
5162 * for runs of spaces at the end of a non-wrapping line.
5164 if (!(ldata->lattr & LATTR_WRAPPED)) {
5165 termchar *q = ldata->chars + term->cols;
5166 while (q > ldata->chars &&
5167 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5169 if (q == ldata->chars + term->cols)
5171 if (p.x >= q - ldata->chars)
5172 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5177 * In this mode, the units are maximal runs of characters
5178 * whose `wordness' has the same value.
5180 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5183 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5184 term->cols-1 : term->cols);
5185 if (p.x < maxcols-1) {
5186 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5191 if (ldata->lattr & LATTR_WRAPPED) {
5193 ldata2 = lineptr(p.y+1);
5194 if (wordtype(term, UCSGET(ldata2->chars, 0))
5211 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5220 ldata2 = lineptr(p.y-1);
5221 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5222 term->cols-1 : term->cols);
5223 if (ldata2->lattr & LATTR_WRAPPED) {
5224 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5242 * In this mode, every line is a unit.
5244 p.x = (dir == -1 ? 0 : term->cols - 1);
5252 static void sel_spread(Terminal *term)
5254 if (term->seltype == LEXICOGRAPHIC) {
5255 term->selstart = sel_spread_half(term, term->selstart, -1);
5256 decpos(term->selend);
5257 term->selend = sel_spread_half(term, term->selend, +1);
5258 incpos(term->selend);
5262 void term_do_paste(Terminal *term)
5267 get_clip(term->frontend, &data, &len);
5268 if (data && len > 0) {
5271 term_seen_key_event(term); /* pasted data counts */
5273 if (term->paste_buffer)
5274 sfree(term->paste_buffer);
5275 term->paste_pos = term->paste_hold = term->paste_len = 0;
5276 term->paste_buffer = snewn(len, wchar_t);
5279 while (p < data + len) {
5280 while (p < data + len &&
5281 !(p <= data + len - sel_nl_sz &&
5282 !memcmp(p, sel_nl, sizeof(sel_nl))))
5287 for (i = 0; i < p - q; i++) {
5288 term->paste_buffer[term->paste_len++] = q[i];
5292 if (p <= data + len - sel_nl_sz &&
5293 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5294 term->paste_buffer[term->paste_len++] = '\015';
5300 /* Assume a small paste will be OK in one go. */
5301 if (term->paste_len < 256) {
5303 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5304 if (term->paste_buffer)
5305 sfree(term->paste_buffer);
5306 term->paste_buffer = 0;
5307 term->paste_pos = term->paste_hold = term->paste_len = 0;
5310 get_clip(term->frontend, NULL, NULL);
5313 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5314 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5318 int raw_mouse = (term->xterm_mouse &&
5319 !term->cfg.no_mouse_rep &&
5320 !(term->cfg.mouse_override && shift));
5321 int default_seltype;
5325 if (a == MA_DRAG && !raw_mouse)
5326 term_scroll(term, 0, -1);
5328 if (y >= term->rows) {
5330 if (a == MA_DRAG && !raw_mouse)
5331 term_scroll(term, 0, +1);
5340 if (x >= term->cols)
5343 selpoint.y = y + term->disptop;
5345 ldata = lineptr(selpoint.y);
5346 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5351 int encstate = 0, r, c;
5358 encstate = 0x20; /* left button down */
5369 case MBT_WHEEL_DOWN:
5372 default: break; /* placate gcc warning about enum use */
5376 if (term->xterm_mouse == 1)
5382 term->mouse_is_down = 0;
5385 if (term->mouse_is_down == braw)
5387 term->mouse_is_down = braw;
5389 default: break; /* placate gcc warning about enum use */
5398 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5399 ldisc_send(term->ldisc, abuf, 6, 0);
5405 * Set the selection type (rectangular or normal) at the start
5406 * of a selection attempt, from the state of Alt.
5408 if (!alt ^ !term->cfg.rect_select)
5409 default_seltype = RECTANGULAR;
5411 default_seltype = LEXICOGRAPHIC;
5413 if (term->selstate == NO_SELECTION) {
5414 term->seltype = default_seltype;
5417 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5419 term->selstate = ABOUT_TO;
5420 term->seltype = default_seltype;
5421 term->selanchor = selpoint;
5422 term->selmode = SM_CHAR;
5423 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5425 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5426 term->selstate = DRAGGING;
5427 term->selstart = term->selanchor = selpoint;
5428 term->selend = term->selstart;
5429 incpos(term->selend);
5431 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5432 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5433 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5435 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5436 term->selstate == SELECTED) {
5437 if (term->seltype == LEXICOGRAPHIC) {
5439 * For normal selection, we extend by moving
5440 * whichever end of the current selection is closer
5443 if (posdiff(selpoint, term->selstart) <
5444 posdiff(term->selend, term->selstart) / 2) {
5445 term->selanchor = term->selend;
5446 decpos(term->selanchor);
5448 term->selanchor = term->selstart;
5452 * For rectangular selection, we have a choice of
5453 * _four_ places to put selanchor and selpoint: the
5454 * four corners of the selection.
5456 if (2*selpoint.x < term->selstart.x + term->selend.x)
5457 term->selanchor.x = term->selend.x-1;
5459 term->selanchor.x = term->selstart.x;
5461 if (2*selpoint.y < term->selstart.y + term->selend.y)
5462 term->selanchor.y = term->selend.y;
5464 term->selanchor.y = term->selstart.y;
5466 term->selstate = DRAGGING;
5468 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5469 term->selanchor = selpoint;
5470 term->selstate = DRAGGING;
5471 if (term->seltype == LEXICOGRAPHIC) {
5473 * For normal selection, we set (selstart,selend) to
5474 * (selpoint,selanchor) in some order.
5476 if (poslt(selpoint, term->selanchor)) {
5477 term->selstart = selpoint;
5478 term->selend = term->selanchor;
5479 incpos(term->selend);
5481 term->selstart = term->selanchor;
5482 term->selend = selpoint;
5483 incpos(term->selend);
5487 * For rectangular selection, we may need to
5488 * interchange x and y coordinates (if the user has
5489 * dragged in the -x and +y directions, or vice versa).
5491 term->selstart.x = min(term->selanchor.x, selpoint.x);
5492 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5493 term->selstart.y = min(term->selanchor.y, selpoint.y);
5494 term->selend.y = max(term->selanchor.y, selpoint.y);
5497 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5499 if (term->selstate == DRAGGING) {
5501 * We've completed a selection. We now transfer the
5502 * data to the clipboard.
5504 clipme(term, term->selstart, term->selend,
5505 (term->seltype == RECTANGULAR), FALSE);
5506 term->selstate = SELECTED;
5508 term->selstate = NO_SELECTION;
5509 } else if (bcooked == MBT_PASTE
5511 #if MULTICLICK_ONLY_EVENT
5512 || a == MA_2CLK || a == MA_3CLK
5515 request_paste(term->frontend);
5521 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5522 unsigned int modifiers, unsigned int flags)
5526 int prependesc = FALSE;
5530 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5531 for (i = 0; i < tlen; i++)
5532 fprintf(stderr, " %04x", (unsigned)text[i]);
5533 fprintf(stderr, "\n");
5537 if ((flags & PKF_REPEAT) && term->repeat_off)
5540 /* Currently, Meta always just prefixes everything with ESC. */
5541 if (modifiers & PKM_META)
5543 modifiers &= ~PKM_META;
5546 * Alt is only used for Alt+keypad, which isn't supported yet, so
5549 modifiers &= ~PKM_ALT;
5551 /* Standard local function keys */
5552 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5554 if (keysym == PK_PAGEUP)
5555 /* scroll up one page */;
5556 if (keysym == PK_PAGEDOWN)
5557 /* scroll down on page */;
5558 if (keysym == PK_INSERT)
5559 term_do_paste(term);
5562 if (keysym == PK_PAGEUP)
5563 /* scroll up one line */;
5564 if (keysym == PK_PAGEDOWN)
5565 /* scroll down one line */;
5566 /* Control-Numlock for app-keypad mode switch */
5567 if (keysym == PK_PF1)
5568 term->app_keypad_keys ^= 1;
5572 if (modifiers & PKM_ALT) {
5573 /* Alt+F4 (close) */
5574 /* Alt+Return (full screen) */
5575 /* Alt+Space (system menu) */
5578 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5579 text[0] >= 0x20 && text[0] <= 0x7e) {
5580 /* ASCII chars + Control */
5581 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5582 (text[0] >= 0x61 && text[0] <= 0x7a))
5586 * Control-2 should return ^@ (0x00), Control-6 should return
5587 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5588 * the DOS keyboard handling did it, and we have nothing better
5589 * to do with the key combo in question, we'll also map
5590 * Control-Backquote to ^\ (0x1C).
5593 case ' ': text[0] = 0x00; break;
5594 case '-': text[0] = 0x1f; break;
5595 case '/': text[0] = 0x1f; break;
5596 case '2': text[0] = 0x00; break;
5597 case '3': text[0] = 0x1b; break;
5598 case '4': text[0] = 0x1c; break;
5599 case '5': text[0] = 0x1d; break;
5600 case '6': text[0] = 0x1e; break;
5601 case '7': text[0] = 0x1f; break;
5602 case '8': text[0] = 0x7f; break;
5603 case '`': text[0] = 0x1c; break;
5608 /* Nethack keypad */
5609 if (term->cfg.nethack_keypad) {
5612 case PK_KP1: c = 'b'; break;
5613 case PK_KP2: c = 'j'; break;
5614 case PK_KP3: c = 'n'; break;
5615 case PK_KP4: c = 'h'; break;
5616 case PK_KP5: c = '.'; break;
5617 case PK_KP6: c = 'l'; break;
5618 case PK_KP7: c = 'y'; break;
5619 case PK_KP8: c = 'k'; break;
5620 case PK_KP9: c = 'u'; break;
5621 default: break; /* else gcc warns `enum value not used' */
5625 if (modifiers & PKM_CONTROL)
5627 else if (modifiers & PKM_SHIFT)
5635 /* Numeric Keypad */
5636 if (PK_ISKEYPAD(keysym)) {
5640 * In VT400 mode, PFn always emits an escape sequence. In
5641 * Linux and tilde modes, this only happens in app keypad mode.
5643 if (term->cfg.funky_type == FUNKY_VT400 ||
5644 ((term->cfg.funky_type == FUNKY_LINUX ||
5645 term->cfg.funky_type == FUNKY_TILDE) &&
5646 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5648 case PK_PF1: xkey = 'P'; break;
5649 case PK_PF2: xkey = 'Q'; break;
5650 case PK_PF3: xkey = 'R'; break;
5651 case PK_PF4: xkey = 'S'; break;
5652 default: break; /* else gcc warns `enum value not used' */
5655 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5657 case PK_KP0: xkey = 'p'; break;
5658 case PK_KP1: xkey = 'q'; break;
5659 case PK_KP2: xkey = 'r'; break;
5660 case PK_KP3: xkey = 's'; break;
5661 case PK_KP4: xkey = 't'; break;
5662 case PK_KP5: xkey = 'u'; break;
5663 case PK_KP6: xkey = 'v'; break;
5664 case PK_KP7: xkey = 'w'; break;
5665 case PK_KP8: xkey = 'x'; break;
5666 case PK_KP9: xkey = 'y'; break;
5667 case PK_KPDECIMAL: xkey = 'n'; break;
5668 case PK_KPENTER: xkey = 'M'; break;
5669 default: break; /* else gcc warns `enum value not used' */
5671 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5673 * xterm can't see the layout of the keypad, so it has
5674 * to rely on the X keysyms returned by the keys.
5675 * Hence, we look at the strings here, not the PuTTY
5676 * keysyms (which describe the layout).
5680 if (modifiers & PKM_SHIFT)
5685 case '/': xkey = 'o'; break;
5686 case '*': xkey = 'j'; break;
5687 case '-': xkey = 'm'; break;
5691 * In all other modes, we try to retain the layout of
5692 * the DEC keypad in application mode.
5696 /* This key covers the '-' and ',' keys on a VT220 */
5697 if (modifiers & PKM_SHIFT)
5698 xkey = 'm'; /* VT220 '-' */
5700 xkey = 'l'; /* VT220 ',' */
5702 case PK_KPMINUS: xkey = 'm'; break;
5703 case PK_KPCOMMA: xkey = 'l'; break;
5704 default: break; /* else gcc warns `enum value not used' */
5709 if (term->vt52_mode) {
5710 if (xkey >= 'P' && xkey <= 'S')
5711 p += sprintf((char *) p, "\x1B%c", xkey);
5713 p += sprintf((char *) p, "\x1B?%c", xkey);
5715 p += sprintf((char *) p, "\x1BO%c", xkey);
5718 /* Not in application mode -- treat the number pad as arrow keys? */
5719 if ((flags & PKF_NUMLOCK) == 0) {
5721 case PK_KP0: keysym = PK_INSERT; break;
5722 case PK_KP1: keysym = PK_END; break;
5723 case PK_KP2: keysym = PK_DOWN; break;
5724 case PK_KP3: keysym = PK_PAGEDOWN; break;
5725 case PK_KP4: keysym = PK_LEFT; break;
5726 case PK_KP5: keysym = PK_REST; break;
5727 case PK_KP6: keysym = PK_RIGHT; break;
5728 case PK_KP7: keysym = PK_HOME; break;
5729 case PK_KP8: keysym = PK_UP; break;
5730 case PK_KP9: keysym = PK_PAGEUP; break;
5731 default: break; /* else gcc warns `enum value not used' */
5736 /* Miscellaneous keys */
5743 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5744 else if (modifiers == PKM_SHIFT)
5745 /* We do the opposite of what is configured */
5746 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5752 else if (modifiers == PKM_SHIFT)
5753 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5756 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5758 if (modifiers == PKM_CONTROL)
5763 case PK_KPENTER: /* Odd keypad modes handled above */
5764 if (modifiers == 0) {
5766 if (term->cr_lf_return)
5770 default: break; /* else gcc warns `enum value not used' */
5773 /* SCO function keys and editing keys */
5774 if (term->cfg.funky_type == FUNKY_SCO) {
5775 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
5776 static char const codes[] =
5777 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5778 int index = keysym - PK_F1;
5780 if (modifiers & PKM_SHIFT) index += 12;
5781 if (modifiers & PKM_CONTROL) index += 24;
5782 p += sprintf((char *) p, "\x1B[%c", codes[index]);
5785 if (PK_ISEDITING(keysym)) {
5789 case PK_DELETE: *p++ = 0x7f; goto done;
5790 case PK_HOME: xkey = 'H'; break;
5791 case PK_INSERT: xkey = 'L'; break;
5792 case PK_END: xkey = 'F'; break;
5793 case PK_PAGEUP: xkey = 'I'; break;
5794 case PK_PAGEDOWN: xkey = 'G'; break;
5795 default: break; /* else gcc warns `enum value not used' */
5797 p += sprintf((char *) p, "\x1B[%c", xkey);
5801 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
5804 if (term->cfg.funky_type == FUNKY_XTERM) {
5805 /* Xterm shuffles these keys, apparently. */
5807 case PK_HOME: keysym = PK_INSERT; break;
5808 case PK_INSERT: keysym = PK_HOME; break;
5809 case PK_DELETE: keysym = PK_END; break;
5810 case PK_END: keysym = PK_PAGEUP; break;
5811 case PK_PAGEUP: keysym = PK_DELETE; break;
5812 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
5813 default: break; /* else gcc warns `enum value not used' */
5818 if (term->cfg.rxvt_homeend &&
5819 (keysym == PK_HOME || keysym == PK_END)) {
5820 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
5824 if (term->vt52_mode) {
5828 * A real VT52 doesn't have these, and a VT220 doesn't
5829 * send anything for them in VT52 mode.
5832 case PK_HOME: xkey = 'H'; break;
5833 case PK_INSERT: xkey = 'L'; break;
5834 case PK_DELETE: xkey = 'M'; break;
5835 case PK_END: xkey = 'E'; break;
5836 case PK_PAGEUP: xkey = 'I'; break;
5837 case PK_PAGEDOWN: xkey = 'G'; break;
5838 default: xkey=0; break; /* else gcc warns `enum value not used'*/
5840 p += sprintf((char *) p, "\x1B%c", xkey);
5845 case PK_HOME: code = 1; break;
5846 case PK_INSERT: code = 2; break;
5847 case PK_DELETE: code = 3; break;
5848 case PK_END: code = 4; break;
5849 case PK_PAGEUP: code = 5; break;
5850 case PK_PAGEDOWN: code = 6; break;
5851 default: code = 0; break; /* else gcc warns `enum value not used' */
5853 p += sprintf((char *) p, "\x1B[%d~", code);
5857 if (PK_ISFKEY(keysym)) {
5858 /* Map Shift+F1-F10 to F11-F20 */
5859 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
5861 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
5863 /* XXX This overrides the XTERM/VT52 mode below */
5865 if (keysym >= PK_F6) offt++;
5866 if (keysym >= PK_F12) offt++;
5867 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
5868 'P' + keysym - PK_F1 - offt);
5871 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
5872 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
5875 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
5876 if (term->vt52_mode)
5877 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
5879 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
5882 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
5886 if (PK_ISCURSOR(keysym)) {
5890 case PK_UP: xkey = 'A'; break;
5891 case PK_DOWN: xkey = 'B'; break;
5892 case PK_RIGHT: xkey = 'C'; break;
5893 case PK_LEFT: xkey = 'D'; break;
5894 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
5895 default: xkey = 0; break; /* else gcc warns `enum value not used' */
5897 if (term->vt52_mode)
5898 p += sprintf((char *) p, "\x1B%c", xkey);
5900 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
5902 /* Useful mapping of Ctrl-arrows */
5903 if (modifiers == PKM_CONTROL)
5907 p += sprintf((char *) p, "\x1BO%c", xkey);
5909 p += sprintf((char *) p, "\x1B[%c", xkey);
5915 if (p > output || tlen > 0) {
5917 * Interrupt an ongoing paste. I'm not sure
5918 * this is sensible, but for the moment it's
5919 * preferable to having to faff about buffering
5925 * We need not bother about stdin backlogs
5926 * here, because in GUI PuTTY we can't do
5927 * anything about it anyway; there's no means
5928 * of asking Windows to hold off on KEYDOWN
5929 * messages. We _have_ to buffer everything
5932 term_seen_key_event(term);
5936 fprintf(stderr, "sending ESC\n");
5938 ldisc_send(term->ldisc, "\x1b", 1, 1);
5943 fprintf(stderr, "sending %d bytes:", p - output);
5944 for (i = 0; i < p - output; i++)
5945 fprintf(stderr, " %02x", output[i]);
5946 fprintf(stderr, "\n");
5948 ldisc_send(term->ldisc, output, p - output, 1);
5949 } else if (tlen > 0) {
5951 fprintf(stderr, "sending %d unichars:", tlen);
5952 for (i = 0; i < tlen; i++)
5953 fprintf(stderr, " %04x", (unsigned) text[i]);
5954 fprintf(stderr, "\n");
5956 luni_send(term->ldisc, text, tlen, 1);
5961 void term_nopaste(Terminal *term)
5963 if (term->paste_len == 0)
5965 sfree(term->paste_buffer);
5966 term->paste_buffer = NULL;
5967 term->paste_len = 0;
5970 int term_paste_pending(Terminal *term)
5972 return term->paste_len != 0;
5975 void term_paste(Terminal *term)
5977 long now, paste_diff;
5979 if (term->paste_len == 0)
5982 /* Don't wait forever to paste */
5983 if (term->paste_hold) {
5984 now = GETTICKCOUNT();
5985 paste_diff = now - term->last_paste;
5986 if (paste_diff >= 0 && paste_diff < 450)
5989 term->paste_hold = 0;
5991 while (term->paste_pos < term->paste_len) {
5993 while (n + term->paste_pos < term->paste_len) {
5994 if (term->paste_buffer[term->paste_pos + n++] == '\015')
5998 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
5999 term->paste_pos += n;
6001 if (term->paste_pos < term->paste_len) {
6002 term->paste_hold = 1;
6006 sfree(term->paste_buffer);
6007 term->paste_buffer = NULL;
6008 term->paste_len = 0;
6011 static void deselect(Terminal *term)
6013 term->selstate = NO_SELECTION;
6014 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6017 void term_deselect(Terminal *term)
6023 int term_ldisc(Terminal *term, int option)
6025 if (option == LD_ECHO)
6026 return term->term_echoing;
6027 if (option == LD_EDIT)
6028 return term->term_editing;
6032 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6034 bufchain_add(&term->inbuf, data, len);
6036 if (!term->in_term_out) {
6037 term->in_term_out = TRUE;
6038 term_reset_cblink(term);
6040 * During drag-selects, we do not process terminal input,
6041 * because the user will want the screen to hold still to
6044 if (term->selstate != DRAGGING)
6046 term->in_term_out = FALSE;
6050 * term_out() always completely empties inbuf. Therefore,
6051 * there's no reason at all to return anything other than zero
6052 * from this function, because there _can't_ be a question of
6053 * the remote side needing to wait until term_out() has cleared
6056 * This is a slightly suboptimal way to deal with SSH2 - in
6057 * principle, the window mechanism would allow us to continue
6058 * to accept data on forwarded ports and X connections even
6059 * while the terminal processing was going slowly - but we
6060 * can't do the 100% right thing without moving the terminal
6061 * processing into a separate thread, and that might hurt
6062 * portability. So we manage stdout buffering the old SSH1 way:
6063 * if the terminal processing goes slowly, the whole SSH
6064 * connection stops accepting data until it's ready.
6066 * In practice, I can't imagine this causing serious trouble.
6071 void term_provide_logctx(Terminal *term, void *logctx)
6073 term->logctx = logctx;
6076 void term_set_focus(Terminal *term, int has_focus)
6078 term->has_focus = has_focus;
6079 term_schedule_cblink(term);