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->tblink_pending)
1047 return; /* already well in hand */
1048 if (term->blink_is_real) {
1049 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1050 term->tblink_pending = TRUE;
1052 term->tblinker = 1; /* reset when not in use */
1053 term->tblink_pending = FALSE;
1058 * Likewise with cursor blinks.
1060 static void term_schedule_cblink(Terminal *term)
1062 if (term->cblink_pending)
1063 return; /* already well in hand */
1064 if (term->cfg.blink_cur) {
1065 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1066 term->cblink_pending = TRUE;
1068 term->cblinker = 1; /* reset when not in use */
1069 term->cblink_pending = FALSE;
1074 * Call to reset cursor blinking on new output.
1076 static void term_reset_cblink(Terminal *term)
1078 seen_disp_event(term);
1080 term->cblink_pending = FALSE;
1081 term_schedule_cblink(term);
1085 * Call to begin a visual bell.
1087 static void term_schedule_vbell(Terminal *term, int already_started,
1090 long ticks_already_gone;
1092 if (already_started)
1093 ticks_already_gone = GETTICKCOUNT() - startpoint;
1095 ticks_already_gone = 0;
1097 if (ticks_already_gone < VBELL_DELAY) {
1098 term->in_vbell = TRUE;
1099 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1102 term->in_vbell = FALSE;
1107 * Set up power-on settings for the terminal.
1109 static void power_on(Terminal *term)
1111 term->curs.x = term->curs.y = 0;
1112 term->alt_x = term->alt_y = 0;
1113 term->savecurs.x = term->savecurs.y = 0;
1114 term->alt_t = term->marg_t = 0;
1115 if (term->rows != -1)
1116 term->alt_b = term->marg_b = term->rows - 1;
1118 term->alt_b = term->marg_b = 0;
1119 if (term->cols != -1) {
1121 for (i = 0; i < term->cols; i++)
1122 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1124 term->alt_om = term->dec_om = term->cfg.dec_om;
1125 term->alt_ins = term->insert = FALSE;
1126 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
1127 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1128 term->alt_cset = term->cset = term->save_cset = 0;
1129 term->alt_utf = term->utf = term->save_utf = 0;
1130 term->utf_state = 0;
1131 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
1132 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII;
1134 term->in_vbell = FALSE;
1135 term->cursor_on = 1;
1136 term->big_cursor = 0;
1137 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
1138 term->term_editing = term->term_echoing = FALSE;
1139 term->app_cursor_keys = term->cfg.app_cursor;
1140 term->app_keypad_keys = term->cfg.app_keypad;
1141 term->use_bce = term->cfg.bce;
1142 term->blink_is_real = term->cfg.blinktext;
1143 term->erase_char = term->basic_erase_char;
1144 term->alt_which = 0;
1145 term_print_finish(term);
1148 for (i = 0; i < 256; i++)
1149 term->wordness[i] = term->cfg.wordness[i];
1152 swap_screen(term, 1, FALSE, FALSE);
1153 erase_lots(term, FALSE, TRUE, TRUE);
1154 swap_screen(term, 0, FALSE, FALSE);
1155 erase_lots(term, FALSE, TRUE, TRUE);
1157 term_schedule_tblink(term);
1158 term_schedule_cblink(term);
1162 * Force a screen update.
1164 void term_update(Terminal *term)
1168 term->window_update_pending = FALSE;
1170 ctx = get_ctx(term->frontend);
1172 int need_sbar_update = term->seen_disp_event;
1173 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1174 term->disptop = 0; /* return to main screen */
1175 term->seen_disp_event = 0;
1176 need_sbar_update = TRUE;
1179 if (need_sbar_update)
1181 do_paint(term, ctx, TRUE);
1182 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1188 * Called from front end when a keypress occurs, to trigger
1189 * anything magical that needs to happen in that situation.
1191 void term_seen_key_event(Terminal *term)
1194 * On any keypress, clear the bell overload mechanism
1195 * completely, on the grounds that large numbers of
1196 * beeps coming from deliberate key action are likely
1197 * to be intended (e.g. beeps from filename completion
1198 * blocking repeatedly).
1200 term->beep_overloaded = FALSE;
1201 while (term->beephead) {
1202 struct beeptime *tmp = term->beephead;
1203 term->beephead = tmp->next;
1206 term->beeptail = NULL;
1210 * Reset the scrollback on keypress, if we're doing that.
1212 if (term->cfg.scroll_on_key) {
1213 term->disptop = 0; /* return to main screen */
1214 seen_disp_event(term);
1219 * Same as power_on(), but an external function.
1221 void term_pwron(Terminal *term)
1224 if (term->ldisc) /* cause ldisc to notice changes */
1225 ldisc_send(term->ldisc, NULL, 0, 0);
1231 static void set_erase_char(Terminal *term)
1233 term->erase_char = term->basic_erase_char;
1235 term->erase_char.attr = (term->curr_attr &
1236 (ATTR_FGMASK | ATTR_BGMASK));
1240 * When the user reconfigures us, we need to check the forbidden-
1241 * alternate-screen config option, disable raw mouse mode if the
1242 * user has disabled mouse reporting, and abandon a print job if
1243 * the user has disabled printing.
1245 void term_reconfig(Terminal *term, Config *cfg)
1248 * Before adopting the new config, check all those terminal
1249 * settings which control power-on defaults; and if they've
1250 * changed, we will modify the current state as well as the
1251 * default one. The full list is: Auto wrap mode, DEC Origin
1252 * Mode, BCE, blinking text, character classes.
1254 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1257 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1258 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1259 reset_bce = (term->cfg.bce != cfg->bce);
1260 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1261 reset_charclass = 0;
1262 for (i = 0; i < lenof(term->cfg.wordness); i++)
1263 if (term->cfg.wordness[i] != cfg->wordness[i])
1264 reset_charclass = 1;
1267 * If the bidi or shaping settings have changed, flush the bidi
1270 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1271 term->cfg.bidi != cfg->bidi) {
1272 for (i = 0; i < term->bidi_cache_size; i++) {
1273 sfree(term->pre_bidi_cache[i].chars);
1274 sfree(term->post_bidi_cache[i].chars);
1275 term->pre_bidi_cache[i].width = -1;
1276 term->pre_bidi_cache[i].chars = NULL;
1277 term->post_bidi_cache[i].width = -1;
1278 term->post_bidi_cache[i].chars = NULL;
1282 term->cfg = *cfg; /* STRUCTURE COPY */
1285 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1287 term->alt_om = term->dec_om = term->cfg.dec_om;
1289 term->use_bce = term->cfg.bce;
1290 set_erase_char(term);
1293 term->blink_is_real = term->cfg.blinktext;
1295 if (reset_charclass)
1296 for (i = 0; i < 256; i++)
1297 term->wordness[i] = term->cfg.wordness[i];
1299 if (term->cfg.no_alt_screen)
1300 swap_screen(term, 0, FALSE, FALSE);
1301 if (term->cfg.no_mouse_rep) {
1302 term->xterm_mouse = 0;
1303 set_raw_mouse_mode(term->frontend, 0);
1305 if (term->cfg.no_remote_charset) {
1306 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1307 term->sco_acs = term->alt_sco_acs = 0;
1310 if (!*term->cfg.printer) {
1311 term_print_finish(term);
1313 term_schedule_tblink(term);
1314 term_schedule_cblink(term);
1318 * Clear the scrollback.
1320 void term_clrsb(Terminal *term)
1324 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1325 sfree(line); /* this is compressed data, not a termline */
1327 term->tempsblines = 0;
1328 term->alt_sblines = 0;
1333 * Initialise the terminal.
1335 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1341 * Allocate a new Terminal structure and initialise the fields
1344 term = snew(Terminal);
1345 term->frontend = frontend;
1346 term->ucsdata = ucsdata;
1347 term->cfg = *mycfg; /* STRUCTURE COPY */
1348 term->logctx = NULL;
1349 term->compatibility_level = TM_PUTTY;
1350 strcpy(term->id_string, "\033[?6c");
1351 term->cblink_pending = term->tblink_pending = FALSE;
1352 term->paste_buffer = NULL;
1353 term->paste_len = 0;
1354 term->last_paste = 0;
1355 bufchain_init(&term->inbuf);
1356 bufchain_init(&term->printer_buf);
1357 term->printing = term->only_printing = FALSE;
1358 term->print_job = NULL;
1359 term->vt52_mode = FALSE;
1360 term->cr_lf_return = FALSE;
1361 term->seen_disp_event = FALSE;
1362 term->xterm_mouse = term->mouse_is_down = FALSE;
1363 term->reset_132 = FALSE;
1364 term->cblinker = term->tblinker = 0;
1365 term->has_focus = 1;
1366 term->repeat_off = FALSE;
1367 term->termstate = TOPLEVEL;
1368 term->selstate = NO_SELECTION;
1371 term->screen = term->alt_screen = term->scrollback = NULL;
1372 term->tempsblines = 0;
1373 term->alt_sblines = 0;
1375 term->disptext = NULL;
1376 term->dispcursx = term->dispcursy = -1;
1379 term->rows = term->cols = -1;
1381 term->beephead = term->beeptail = NULL;
1382 #ifdef OPTIMISE_SCROLL
1383 term->scrollhead = term->scrolltail = NULL;
1384 #endif /* OPTIMISE_SCROLL */
1386 term->lastbeep = FALSE;
1387 term->beep_overloaded = FALSE;
1388 term->attr_mask = 0xffffffff;
1389 term->resize_fn = NULL;
1390 term->resize_ctx = NULL;
1391 term->in_term_out = FALSE;
1393 term->ltemp_size = 0;
1394 term->wcFrom = NULL;
1396 term->wcFromTo_size = 0;
1398 term->window_update_pending = FALSE;
1400 term->bidi_cache_size = 0;
1401 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1404 term->basic_erase_char.chr = CSET_ASCII | ' ';
1405 term->basic_erase_char.attr = ATTR_DEFAULT;
1406 term->basic_erase_char.cc_next = 0;
1407 term->erase_char = term->basic_erase_char;
1412 void term_free(Terminal *term)
1415 struct beeptime *beep;
1418 while ((line = delpos234(term->scrollback, 0)) != NULL)
1419 sfree(line); /* compressed data, not a termline */
1420 freetree234(term->scrollback);
1421 while ((line = delpos234(term->screen, 0)) != NULL)
1423 freetree234(term->screen);
1424 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1426 freetree234(term->alt_screen);
1427 if (term->disptext) {
1428 for (i = 0; i < term->rows; i++)
1429 freeline(term->disptext[i]);
1431 sfree(term->disptext);
1432 while (term->beephead) {
1433 beep = term->beephead;
1434 term->beephead = beep->next;
1437 bufchain_clear(&term->inbuf);
1439 printer_finish_job(term->print_job);
1440 bufchain_clear(&term->printer_buf);
1441 sfree(term->paste_buffer);
1443 sfree(term->wcFrom);
1446 for (i = 0; i < term->bidi_cache_size; i++) {
1447 sfree(term->pre_bidi_cache[i].chars);
1448 sfree(term->post_bidi_cache[i].chars);
1450 sfree(term->pre_bidi_cache);
1451 sfree(term->post_bidi_cache);
1453 expire_timer_context(term);
1459 * Set up the terminal for a given size.
1461 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1464 termline **newdisp, *line;
1465 int i, j, oldrows = term->rows;
1467 int save_alt_which = term->alt_which;
1469 if (newrows == term->rows && newcols == term->cols &&
1470 newsavelines == term->savelines)
1471 return; /* nothing to do */
1474 swap_screen(term, 0, FALSE, FALSE);
1476 term->alt_t = term->marg_t = 0;
1477 term->alt_b = term->marg_b = newrows - 1;
1479 if (term->rows == -1) {
1480 term->scrollback = newtree234(NULL);
1481 term->screen = newtree234(NULL);
1482 term->tempsblines = 0;
1487 * Resize the screen and scrollback. We only need to shift
1488 * lines around within our data structures, because lineptr()
1489 * will take care of resizing each individual line if
1492 * - If the new screen is longer, we shunt lines in from temporary
1493 * scrollback if possible, otherwise we add new blank lines at
1496 * - If the new screen is shorter, we remove any blank lines at
1497 * the bottom if possible, otherwise shunt lines above the cursor
1498 * to scrollback if possible, otherwise delete lines below the
1501 * - Then, if the new scrollback length is less than the
1502 * amount of scrollback we actually have, we must throw some
1505 sblen = count234(term->scrollback);
1506 /* Do this loop to expand the screen if newrows > rows */
1507 assert(term->rows == count234(term->screen));
1508 while (term->rows < newrows) {
1509 if (term->tempsblines > 0) {
1510 unsigned char *cline;
1511 /* Insert a line from the scrollback at the top of the screen. */
1512 assert(sblen >= term->tempsblines);
1513 cline = delpos234(term->scrollback, --sblen);
1514 line = decompressline(cline, NULL);
1516 line->temporary = FALSE; /* reconstituted line is now real */
1517 term->tempsblines -= 1;
1518 addpos234(term->screen, line, 0);
1520 term->savecurs.y += 1;
1522 /* Add a new blank line at the bottom of the screen. */
1523 line = newline(term, newcols, FALSE);
1524 addpos234(term->screen, line, count234(term->screen));
1528 /* Do this loop to shrink the screen if newrows < rows */
1529 while (term->rows > newrows) {
1530 if (term->curs.y < term->rows - 1) {
1531 /* delete bottom row, unless it contains the cursor */
1532 sfree(delpos234(term->screen, term->rows - 1));
1534 /* push top row to scrollback */
1535 line = delpos234(term->screen, 0);
1536 addpos234(term->scrollback, compressline(line), sblen++);
1538 term->tempsblines += 1;
1540 term->savecurs.y -= 1;
1544 assert(term->rows == newrows);
1545 assert(count234(term->screen) == newrows);
1547 /* Delete any excess lines from the scrollback. */
1548 while (sblen > newsavelines) {
1549 line = delpos234(term->scrollback, 0);
1553 if (sblen < term->tempsblines)
1554 term->tempsblines = sblen;
1555 assert(count234(term->scrollback) <= newsavelines);
1556 assert(count234(term->scrollback) >= term->tempsblines);
1559 /* Make a new displayed text buffer. */
1560 newdisp = snewn(newrows, termline *);
1561 for (i = 0; i < newrows; i++) {
1562 newdisp[i] = newline(term, newcols, FALSE);
1563 for (j = 0; j < newcols; j++)
1564 newdisp[i]->chars[j].attr = ATTR_INVALID;
1566 if (term->disptext) {
1567 for (i = 0; i < oldrows; i++)
1568 freeline(term->disptext[i]);
1570 sfree(term->disptext);
1571 term->disptext = newdisp;
1572 term->dispcursx = term->dispcursy = -1;
1574 /* Make a new alternate screen. */
1575 newalt = newtree234(NULL);
1576 for (i = 0; i < newrows; i++) {
1577 line = newline(term, newcols, TRUE);
1578 addpos234(newalt, line, i);
1580 if (term->alt_screen) {
1581 while (NULL != (line = delpos234(term->alt_screen, 0)))
1583 freetree234(term->alt_screen);
1585 term->alt_screen = newalt;
1586 term->alt_sblines = 0;
1588 term->tabs = sresize(term->tabs, newcols, unsigned char);
1591 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1592 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1595 /* Check that the cursor positions are still valid. */
1596 if (term->savecurs.y < 0)
1597 term->savecurs.y = 0;
1598 if (term->savecurs.y >= newrows)
1599 term->savecurs.y = newrows - 1;
1600 if (term->curs.y < 0)
1602 if (term->curs.y >= newrows)
1603 term->curs.y = newrows - 1;
1604 if (term->curs.x >= newcols)
1605 term->curs.x = newcols - 1;
1606 term->alt_x = term->alt_y = 0;
1607 term->wrapnext = term->alt_wnext = FALSE;
1609 term->rows = newrows;
1610 term->cols = newcols;
1611 term->savelines = newsavelines;
1613 swap_screen(term, save_alt_which, FALSE, FALSE);
1617 if (term->resize_fn)
1618 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1622 * Hand a function and context pointer to the terminal which it can
1623 * use to notify a back end of resizes.
1625 void term_provide_resize_fn(Terminal *term,
1626 void (*resize_fn)(void *, int, int),
1629 term->resize_fn = resize_fn;
1630 term->resize_ctx = resize_ctx;
1631 if (term->cols > 0 && term->rows > 0)
1632 resize_fn(resize_ctx, term->cols, term->rows);
1635 /* Find the bottom line on the screen that has any content.
1636 * If only the top line has content, returns 0.
1637 * If no lines have content, return -1.
1639 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1642 for (i = count234(screen) - 1; i >= 0; i--) {
1643 termline *line = index234(screen, i);
1645 for (j = 0; j < line->cols; j++)
1646 if (!termchars_equal(&line->chars[j], &term->erase_char))
1648 if (j != line->cols) break;
1654 * Swap screens. If `reset' is TRUE and we have been asked to
1655 * switch to the alternate screen, we must bring most of its
1656 * configuration from the main screen and erase the contents of the
1657 * alternate screen completely. (This is even true if we're already
1658 * on it! Blame xterm.)
1660 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1666 reset = FALSE; /* do no weird resetting if which==0 */
1668 if (which != term->alt_which) {
1669 term->alt_which = which;
1671 ttr = term->alt_screen;
1672 term->alt_screen = term->screen;
1674 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1676 if (!reset && !keep_cur_pos)
1677 term->curs.x = term->alt_x;
1680 if (!reset && !keep_cur_pos)
1681 term->curs.y = term->alt_y;
1684 if (!reset) term->marg_t = term->alt_t;
1687 if (!reset) term->marg_b = term->alt_b;
1690 if (!reset) term->dec_om = term->alt_om;
1693 if (!reset) term->wrap = term->alt_wrap;
1696 if (!reset) term->wrapnext = term->alt_wnext;
1697 term->alt_wnext = t;
1699 if (!reset) term->insert = term->alt_ins;
1702 if (!reset) term->cset = term->alt_cset;
1705 if (!reset) term->utf = term->alt_utf;
1708 if (!reset) term->sco_acs = term->alt_sco_acs;
1709 term->alt_sco_acs = t;
1712 if (reset && term->screen) {
1714 * Yes, this _is_ supposed to honour background-colour-erase.
1716 erase_lots(term, FALSE, TRUE, TRUE);
1721 * Update the scroll bar.
1723 static void update_sbar(Terminal *term)
1725 int nscroll = sblines(term);
1726 set_sbar(term->frontend, nscroll + term->rows,
1727 nscroll + term->disptop, term->rows);
1731 * Check whether the region bounded by the two pointers intersects
1732 * the scroll region, and de-select the on-screen selection if so.
1734 static void check_selection(Terminal *term, pos from, pos to)
1736 if (poslt(from, term->selend) && poslt(term->selstart, to))
1741 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1742 * for backward.) `sb' is TRUE if the scrolling is permitted to
1743 * affect the scrollback buffer.
1745 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1748 int i, seltop, olddisptop, shift;
1750 if (topline != 0 || term->alt_which != 0)
1753 olddisptop = term->disptop;
1757 line = delpos234(term->screen, botline);
1758 resizeline(term, line, term->cols);
1759 for (i = 0; i < term->cols; i++)
1760 copy_termchar(line, i, &term->erase_char);
1761 line->lattr = LATTR_NORM;
1762 addpos234(term->screen, line, topline);
1764 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1766 if (term->selstart.y > botline) {
1767 term->selstart.y = botline + 1;
1768 term->selstart.x = 0;
1771 if (term->selend.y >= topline && term->selend.y <= botline) {
1773 if (term->selend.y > botline) {
1774 term->selend.y = botline + 1;
1783 line = delpos234(term->screen, topline);
1784 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
1785 if (sb && term->savelines > 0) {
1786 int sblen = count234(term->scrollback);
1788 * We must add this line to the scrollback. We'll
1789 * remove a line from the top of the scrollback if
1790 * the scrollback is full.
1792 if (sblen == term->savelines) {
1793 unsigned char *cline;
1796 cline = delpos234(term->scrollback, 0);
1799 term->tempsblines += 1;
1801 addpos234(term->scrollback, compressline(line), sblen);
1803 /* now `line' itself can be reused as the bottom line */
1806 * If the user is currently looking at part of the
1807 * scrollback, and they haven't enabled any options
1808 * that are going to reset the scrollback as a
1809 * result of this movement, then the chances are
1810 * they'd like to keep looking at the same line. So
1811 * we move their viewpoint at the same rate as the
1812 * scroll, at least until their viewpoint hits the
1813 * top end of the scrollback buffer, at which point
1814 * we don't have the choice any more.
1816 * Thanks to Jan Holmen Holsten for the idea and
1817 * initial implementation.
1819 if (term->disptop > -term->savelines && term->disptop < 0)
1822 resizeline(term, line, term->cols);
1823 for (i = 0; i < term->cols; i++)
1824 copy_termchar(line, i, &term->erase_char);
1825 line->lattr = LATTR_NORM;
1826 addpos234(term->screen, line, botline);
1829 * If the selection endpoints move into the scrollback,
1830 * we keep them moving until they hit the top. However,
1831 * of course, if the line _hasn't_ moved into the
1832 * scrollback then we don't do this, and cut them off
1833 * at the top of the scroll region.
1835 * This applies to selstart and selend (for an existing
1836 * selection), and also selanchor (for one being
1837 * selected as we speak).
1839 seltop = sb ? -term->savelines : topline;
1841 if (term->selstate != NO_SELECTION) {
1842 if (term->selstart.y >= seltop &&
1843 term->selstart.y <= botline) {
1845 if (term->selstart.y < seltop) {
1846 term->selstart.y = seltop;
1847 term->selstart.x = 0;
1850 if (term->selend.y >= seltop && term->selend.y <= botline) {
1852 if (term->selend.y < seltop) {
1853 term->selend.y = seltop;
1857 if (term->selanchor.y >= seltop &&
1858 term->selanchor.y <= botline) {
1859 term->selanchor.y--;
1860 if (term->selanchor.y < seltop) {
1861 term->selanchor.y = seltop;
1862 term->selanchor.x = 0;
1870 #ifdef OPTIMISE_SCROLL
1871 shift += term->disptop - olddisptop;
1872 if (shift < term->rows && shift > -term->rows && shift != 0)
1873 scroll_display(term, topline, botline, shift);
1874 #endif /* OPTIMISE_SCROLL */
1877 #ifdef OPTIMISE_SCROLL
1879 * Add a scroll of a region on the screen into the pending scroll list.
1880 * `lines' is +ve for scrolling forward, -ve for backward.
1882 * If the scroll is on the same area as the last scroll in the list,
1885 static void save_scroll(Terminal *term, int topline, int botline, int lines)
1887 struct scrollregion *newscroll;
1888 if (term->scrolltail &&
1889 term->scrolltail->topline == topline &&
1890 term->scrolltail->botline == botline) {
1891 term->scrolltail->lines += lines;
1893 newscroll = snew(struct scrollregion);
1894 newscroll->topline = topline;
1895 newscroll->botline = botline;
1896 newscroll->lines = lines;
1897 newscroll->next = NULL;
1899 if (!term->scrollhead)
1900 term->scrollhead = newscroll;
1902 term->scrolltail->next = newscroll;
1903 term->scrolltail = newscroll;
1908 * Scroll the physical display, and our conception of it in disptext.
1910 static void scroll_display(Terminal *term, int topline, int botline, int lines)
1912 int distance, nlines, i, j;
1914 distance = lines > 0 ? lines : -lines;
1915 nlines = botline - topline + 1 - distance;
1917 for (i = 0; i < nlines; i++)
1918 for (j = 0; j < term->cols; j++)
1919 copy_termchar(term->disptext[start+i], j,
1920 term->disptext[start+i+distance]->chars+j);
1921 if (term->dispcursy >= 0 &&
1922 term->dispcursy >= topline + distance &&
1923 term->dispcursy < topline + distance + nlines)
1924 term->dispcursy -= distance;
1925 for (i = 0; i < distance; i++)
1926 for (j = 0; j < term->cols; j++)
1927 term->disptext[start+nlines+i]->chars[j].attr |= ATTR_INVALID;
1929 for (i = nlines; i-- ;)
1930 for (j = 0; j < term->cols; j++)
1931 copy_termchar(term->disptext[start+i+distance], j,
1932 term->disptext[start+i]->chars+j);
1933 if (term->dispcursy >= 0 &&
1934 term->dispcursy >= topline &&
1935 term->dispcursy < topline + nlines)
1936 term->dispcursy += distance;
1937 for (i = 0; i < distance; i++)
1938 for (j = 0; j < term->cols; j++)
1939 term->disptext[start+i]->chars[j].attr |= ATTR_INVALID;
1941 save_scroll(term, topline, botline, lines);
1943 #endif /* OPTIMISE_SCROLL */
1946 * Move the cursor to a given position, clipping at boundaries. We
1947 * may or may not want to clip at the scroll margin: marg_clip is 0
1948 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
1949 * even _being_ outside the margins.
1951 static void move(Terminal *term, int x, int y, int marg_clip)
1955 if (x >= term->cols)
1958 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
1961 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
1967 if (y >= term->rows)
1971 term->wrapnext = FALSE;
1975 * Save or restore the cursor and SGR mode.
1977 static void save_cursor(Terminal *term, int save)
1980 term->savecurs = term->curs;
1981 term->save_attr = term->curr_attr;
1982 term->save_cset = term->cset;
1983 term->save_utf = term->utf;
1984 term->save_wnext = term->wrapnext;
1985 term->save_csattr = term->cset_attr[term->cset];
1986 term->save_sco_acs = term->sco_acs;
1988 term->curs = term->savecurs;
1989 /* Make sure the window hasn't shrunk since the save */
1990 if (term->curs.x >= term->cols)
1991 term->curs.x = term->cols - 1;
1992 if (term->curs.y >= term->rows)
1993 term->curs.y = term->rows - 1;
1995 term->curr_attr = term->save_attr;
1996 term->cset = term->save_cset;
1997 term->utf = term->save_utf;
1998 term->wrapnext = term->save_wnext;
2000 * wrapnext might reset to False if the x position is no
2001 * longer at the rightmost edge.
2003 if (term->wrapnext && term->curs.x < term->cols-1)
2004 term->wrapnext = FALSE;
2005 term->cset_attr[term->cset] = term->save_csattr;
2006 term->sco_acs = term->save_sco_acs;
2007 set_erase_char(term);
2012 * This function is called before doing _anything_ which affects
2013 * only part of a line of text. It is used to mark the boundary
2014 * between two character positions, and it indicates that some sort
2015 * of effect is going to happen on only one side of that boundary.
2017 * The effect of this function is to check whether a CJK
2018 * double-width character is straddling the boundary, and to remove
2019 * it and replace it with two spaces if so. (Of course, one or
2020 * other of those spaces is then likely to be replaced with
2021 * something else again, as a result of whatever happens next.)
2023 * Also, if the boundary is at the right-hand _edge_ of the screen,
2024 * it implies something deliberate is being done to the rightmost
2025 * column position; hence we must clear LATTR_WRAPPED2.
2027 * The input to the function is the coordinates of the _second_
2028 * character of the pair.
2030 static void check_boundary(Terminal *term, int x, int y)
2034 /* Validate input coordinates, just in case. */
2035 if (x == 0 || x > term->cols)
2038 ldata = scrlineptr(y);
2039 if (x == term->cols) {
2040 ldata->lattr &= ~LATTR_WRAPPED2;
2042 if (ldata->chars[x].chr == UCSWIDE) {
2043 clear_cc(ldata, x-1);
2045 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2046 ldata->chars[x] = ldata->chars[x-1];
2052 * Erase a large portion of the screen: the whole screen, or the
2053 * whole line, or parts thereof.
2055 static void erase_lots(Terminal *term,
2056 int line_only, int from_begin, int to_end)
2060 int erasing_lines_from_top = 0;
2063 start.y = term->curs.y;
2065 end.y = term->curs.y + 1;
2067 erase_lattr = FALSE;
2082 if (!from_begin || !to_end)
2083 check_boundary(term, term->curs.x, term->curs.y);
2084 check_selection(term, start, end);
2086 /* Clear screen also forces a full window redraw, just in case. */
2087 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2088 term_invalidate(term);
2090 /* Lines scrolled away shouldn't be brought back on if the terminal
2092 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2093 erasing_lines_from_top = 1;
2095 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2096 /* If it's a whole number of lines, starting at the top, and
2097 * we're fully erasing them, erase by scrolling and keep the
2098 * lines in the scrollback. */
2099 int scrolllines = end.y;
2100 if (end.y == term->rows) {
2101 /* Shrink until we find a non-empty row.*/
2102 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2104 if (scrolllines > 0)
2105 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2107 termline *ldata = scrlineptr(start.y);
2108 while (poslt(start, end)) {
2109 if (start.x == term->cols) {
2111 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2113 ldata->lattr = LATTR_NORM;
2115 copy_termchar(ldata, start.x, &term->erase_char);
2117 if (incpos(start) && start.y < term->rows) {
2118 ldata = scrlineptr(start.y);
2123 /* After an erase of lines from the top of the screen, we shouldn't
2124 * bring the lines back again if the terminal enlarges (since the user or
2125 * application has explictly thrown them away). */
2126 if (erasing_lines_from_top && !(term->alt_which))
2127 term->tempsblines = 0;
2131 * Insert or delete characters within the current line. n is +ve if
2132 * insertion is desired, and -ve for deletion.
2134 static void insch(Terminal *term, int n)
2136 int dir = (n < 0 ? -1 : +1);
2141 n = (n < 0 ? -n : n);
2142 if (n > term->cols - term->curs.x)
2143 n = term->cols - term->curs.x;
2144 m = term->cols - term->curs.x - n;
2145 cursplus.y = term->curs.y;
2146 cursplus.x = term->curs.x + n;
2147 check_selection(term, term->curs, cursplus);
2148 check_boundary(term, term->curs.x, term->curs.y);
2150 check_boundary(term, term->curs.x + n, term->curs.y);
2151 ldata = scrlineptr(term->curs.y);
2153 for (j = 0; j < m; j++)
2154 move_termchar(ldata,
2155 ldata->chars + term->curs.x + j,
2156 ldata->chars + term->curs.x + j + n);
2158 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2161 move_termchar(ldata,
2162 ldata->chars + term->curs.x + j + n,
2163 ldata->chars + term->curs.x + j);
2165 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2170 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2171 * whether the mode is a DEC private one or a normal one.)
2173 static void toggle_mode(Terminal *term, int mode, int query, int state)
2177 case 1: /* DECCKM: application cursor keys */
2178 term->app_cursor_keys = state;
2180 case 2: /* DECANM: VT52 mode */
2181 term->vt52_mode = !state;
2182 if (term->vt52_mode) {
2183 term->blink_is_real = FALSE;
2184 term->vt52_bold = FALSE;
2186 term->blink_is_real = term->cfg.blinktext;
2188 term_schedule_tblink(term);
2190 case 3: /* DECCOLM: 80/132 columns */
2192 if (!term->cfg.no_remote_resize)
2193 request_resize(term->frontend, state ? 132 : 80, term->rows);
2194 term->reset_132 = state;
2195 term->alt_t = term->marg_t = 0;
2196 term->alt_b = term->marg_b = term->rows - 1;
2197 move(term, 0, 0, 0);
2198 erase_lots(term, FALSE, TRUE, TRUE);
2200 case 5: /* DECSCNM: reverse video */
2202 * Toggle reverse video. If we receive an OFF within the
2203 * visual bell timeout period after an ON, we trigger an
2204 * effective visual bell, so that ESC[?5hESC[?5l will
2205 * always be an actually _visible_ visual bell.
2207 if (term->rvideo && !state) {
2208 /* This is an OFF, so set up a vbell */
2209 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2210 } else if (!term->rvideo && state) {
2211 /* This is an ON, so we notice the time and save it. */
2212 term->rvbell_startpoint = GETTICKCOUNT();
2214 term->rvideo = state;
2215 seen_disp_event(term);
2217 case 6: /* DECOM: DEC origin mode */
2218 term->dec_om = state;
2220 case 7: /* DECAWM: auto wrap */
2223 case 8: /* DECARM: auto key repeat */
2224 term->repeat_off = !state;
2226 case 10: /* DECEDM: set local edit mode */
2227 term->term_editing = state;
2228 if (term->ldisc) /* cause ldisc to notice changes */
2229 ldisc_send(term->ldisc, NULL, 0, 0);
2231 case 25: /* DECTCEM: enable/disable cursor */
2232 compatibility2(OTHER, VT220);
2233 term->cursor_on = state;
2234 seen_disp_event(term);
2236 case 47: /* alternate screen */
2237 compatibility(OTHER);
2239 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2242 case 1000: /* xterm mouse 1 */
2243 term->xterm_mouse = state ? 1 : 0;
2244 set_raw_mouse_mode(term->frontend, state);
2246 case 1002: /* xterm mouse 2 */
2247 term->xterm_mouse = state ? 2 : 0;
2248 set_raw_mouse_mode(term->frontend, state);
2250 case 1047: /* alternate screen */
2251 compatibility(OTHER);
2253 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2256 case 1048: /* save/restore cursor */
2257 if (!term->cfg.no_alt_screen)
2258 save_cursor(term, state);
2259 if (!state) seen_disp_event(term);
2261 case 1049: /* cursor & alternate screen */
2262 if (state && !term->cfg.no_alt_screen)
2263 save_cursor(term, state);
2264 if (!state) seen_disp_event(term);
2265 compatibility(OTHER);
2267 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2268 if (!state && !term->cfg.no_alt_screen)
2269 save_cursor(term, state);
2274 case 4: /* IRM: set insert mode */
2275 compatibility(VT102);
2276 term->insert = state;
2278 case 12: /* SRM: set echo mode */
2279 term->term_echoing = !state;
2280 if (term->ldisc) /* cause ldisc to notice changes */
2281 ldisc_send(term->ldisc, NULL, 0, 0);
2283 case 20: /* LNM: Return sends ... */
2284 term->cr_lf_return = state;
2286 case 34: /* WYULCURM: Make cursor BIG */
2287 compatibility2(OTHER, VT220);
2288 term->big_cursor = !state;
2293 * Process an OSC sequence: set window title or icon name.
2295 static void do_osc(Terminal *term)
2298 while (term->osc_strlen--)
2299 term->wordness[(unsigned char)
2300 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2302 term->osc_string[term->osc_strlen] = '\0';
2303 switch (term->esc_args[0]) {
2306 if (!term->cfg.no_remote_wintitle)
2307 set_icon(term->frontend, term->osc_string);
2308 if (term->esc_args[0] == 1)
2310 /* fall through: parameter 0 means set both */
2313 if (!term->cfg.no_remote_wintitle)
2314 set_title(term->frontend, term->osc_string);
2321 * ANSI printing routines.
2323 static void term_print_setup(Terminal *term)
2325 bufchain_clear(&term->printer_buf);
2326 term->print_job = printer_start_job(term->cfg.printer);
2328 static void term_print_flush(Terminal *term)
2333 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2334 bufchain_prefix(&term->printer_buf, &data, &len);
2337 printer_job_data(term->print_job, data, len);
2338 bufchain_consume(&term->printer_buf, len);
2341 static void term_print_finish(Terminal *term)
2347 if (!term->printing && !term->only_printing)
2348 return; /* we need do nothing */
2350 term_print_flush(term);
2351 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2352 bufchain_prefix(&term->printer_buf, &data, &len);
2354 if (c == '\033' || c == '\233') {
2355 bufchain_consume(&term->printer_buf, size);
2358 printer_job_data(term->print_job, &c, 1);
2359 bufchain_consume(&term->printer_buf, 1);
2362 printer_finish_job(term->print_job);
2363 term->print_job = NULL;
2364 term->printing = term->only_printing = FALSE;
2368 * Remove everything currently in `inbuf' and stick it up on the
2369 * in-memory display. There's a big state machine in here to
2370 * process escape sequences...
2372 static void term_out(Terminal *term)
2376 unsigned char localbuf[256], *chars;
2381 chars = NULL; /* placate compiler warnings */
2382 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
2386 bufchain_prefix(&term->inbuf, &ret, &nchars);
2387 if (nchars > sizeof(localbuf))
2388 nchars = sizeof(localbuf);
2389 memcpy(localbuf, ret, nchars);
2390 bufchain_consume(&term->inbuf, nchars);
2392 assert(chars != NULL);
2398 * Optionally log the session traffic to a file. Useful for
2399 * debugging and possibly also useful for actual logging.
2401 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2402 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2408 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2409 * be able to display 8-bit characters, but I'll let that go 'cause
2414 * If we're printing, add the character to the printer
2417 if (term->printing) {
2418 bufchain_add(&term->printer_buf, &c, 1);
2421 * If we're in print-only mode, we use a much simpler
2422 * state machine designed only to recognise the ESC[4i
2423 * termination sequence.
2425 if (term->only_printing) {
2427 term->print_state = 1;
2428 else if (c == (unsigned char)'\233')
2429 term->print_state = 2;
2430 else if (c == '[' && term->print_state == 1)
2431 term->print_state = 2;
2432 else if (c == '4' && term->print_state == 2)
2433 term->print_state = 3;
2434 else if (c == 'i' && term->print_state == 3)
2435 term->print_state = 4;
2437 term->print_state = 0;
2438 if (term->print_state == 4) {
2439 term_print_finish(term);
2445 /* First see about all those translations. */
2446 if (term->termstate == TOPLEVEL) {
2448 switch (term->utf_state) {
2451 /* UTF-8 must be stateless so we ignore iso2022. */
2452 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2453 c = term->ucsdata->unitab_ctrl[c];
2454 else c = ((unsigned char)c) | CSET_ASCII;
2456 } else if ((c & 0xe0) == 0xc0) {
2457 term->utf_size = term->utf_state = 1;
2458 term->utf_char = (c & 0x1f);
2459 } else if ((c & 0xf0) == 0xe0) {
2460 term->utf_size = term->utf_state = 2;
2461 term->utf_char = (c & 0x0f);
2462 } else if ((c & 0xf8) == 0xf0) {
2463 term->utf_size = term->utf_state = 3;
2464 term->utf_char = (c & 0x07);
2465 } else if ((c & 0xfc) == 0xf8) {
2466 term->utf_size = term->utf_state = 4;
2467 term->utf_char = (c & 0x03);
2468 } else if ((c & 0xfe) == 0xfc) {
2469 term->utf_size = term->utf_state = 5;
2470 term->utf_char = (c & 0x01);
2481 if ((c & 0xC0) != 0x80) {
2484 term->utf_state = 0;
2487 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2488 if (--term->utf_state)
2493 /* Is somebody trying to be evil! */
2495 (c < 0x800 && term->utf_size >= 2) ||
2496 (c < 0x10000 && term->utf_size >= 3) ||
2497 (c < 0x200000 && term->utf_size >= 4) ||
2498 (c < 0x4000000 && term->utf_size >= 5))
2501 /* Unicode line separator and paragraph separator are CR-LF */
2502 if (c == 0x2028 || c == 0x2029)
2505 /* High controls are probably a Baaad idea too. */
2509 /* The UTF-16 surrogates are not nice either. */
2510 /* The standard give the option of decoding these:
2511 * I don't want to! */
2512 if (c >= 0xD800 && c < 0xE000)
2515 /* ISO 10646 characters now limited to UTF-16 range. */
2519 /* This is currently a TagPhobic application.. */
2520 if (c >= 0xE0000 && c <= 0xE007F)
2523 /* U+FEFF is best seen as a null. */
2526 /* But U+FFFE is an error. */
2527 if (c == 0xFFFE || c == 0xFFFF)
2532 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2533 else if(term->sco_acs &&
2534 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2536 if (term->sco_acs == 2) c |= 0x80;
2539 switch (term->cset_attr[term->cset]) {
2541 * Linedraw characters are different from 'ESC ( B'
2542 * only for a small range. For ones outside that
2543 * range, make sure we use the same font as well as
2544 * the same encoding.
2547 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2548 c = term->ucsdata->unitab_ctrl[c];
2550 c = ((unsigned char) c) | CSET_LINEDRW;
2554 /* If UK-ASCII, make the '#' a LineDraw Pound */
2556 c = '}' | CSET_LINEDRW;
2559 /*FALLTHROUGH*/ case CSET_ASCII:
2560 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2561 c = term->ucsdata->unitab_ctrl[c];
2563 c = ((unsigned char) c) | CSET_ASCII;
2566 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2572 /* How about C1 controls ? */
2573 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2574 !term->vt52_mode && has_compat(VT220)) {
2575 term->termstate = SEEN_ESC;
2576 term->esc_query = FALSE;
2577 c = '@' + (c & 0x1F);
2580 /* Or the GL control. */
2581 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2582 if (term->curs.x && !term->wrapnext)
2584 term->wrapnext = FALSE;
2585 /* destructive backspace might be disabled */
2586 if (!term->cfg.no_dbackspace) {
2587 check_boundary(term, term->curs.x, term->curs.y);
2588 check_boundary(term, term->curs.x+1, term->curs.y);
2589 copy_termchar(scrlineptr(term->curs.y),
2590 term->curs.x, &term->erase_char);
2593 /* Or normal C0 controls. */
2594 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2596 case '\005': /* ENQ: terminal type query */
2597 /* Strictly speaking this is VT100 but a VT100 defaults to
2598 * no response. Other terminals respond at their option.
2600 * Don't put a CR in the default string as this tends to
2601 * upset some weird software.
2603 * An xterm returns "xterm" (5 characters)
2605 compatibility(ANSIMIN);
2607 char abuf[256], *s, *d;
2609 for (s = term->cfg.answerback, d = abuf; *s; s++) {
2611 if (*s >= 'a' && *s <= 'z')
2612 *d++ = (*s - ('a' - 1));
2613 else if ((*s >= '@' && *s <= '_') ||
2614 *s == '?' || (*s & 0x80))
2619 } else if (*s == '^') {
2624 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2628 case '\007': /* BEL: Bell */
2630 struct beeptime *newbeep;
2631 unsigned long ticks;
2633 ticks = GETTICKCOUNT();
2635 if (!term->beep_overloaded) {
2636 newbeep = snew(struct beeptime);
2637 newbeep->ticks = ticks;
2638 newbeep->next = NULL;
2639 if (!term->beephead)
2640 term->beephead = newbeep;
2642 term->beeptail->next = newbeep;
2643 term->beeptail = newbeep;
2648 * Throw out any beeps that happened more than
2651 while (term->beephead &&
2652 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2653 struct beeptime *tmp = term->beephead;
2654 term->beephead = tmp->next;
2656 if (!term->beephead)
2657 term->beeptail = NULL;
2661 if (term->cfg.bellovl && term->beep_overloaded &&
2662 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2664 * If we're currently overloaded and the
2665 * last beep was more than s seconds ago,
2666 * leave overload mode.
2668 term->beep_overloaded = FALSE;
2669 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2670 term->nbeeps >= term->cfg.bellovl_n) {
2672 * Now, if we have n or more beeps
2673 * remaining in the queue, go into overload
2676 term->beep_overloaded = TRUE;
2678 term->lastbeep = ticks;
2681 * Perform an actual beep if we're not overloaded.
2683 if (!term->cfg.bellovl || !term->beep_overloaded) {
2684 beep(term->frontend, term->cfg.beep);
2686 if (term->cfg.beep == BELL_VISUAL) {
2687 term_schedule_vbell(term, FALSE, 0);
2690 seen_disp_event(term);
2693 case '\b': /* BS: Back space */
2694 if (term->curs.x == 0 &&
2695 (term->curs.y == 0 || term->wrap == 0))
2697 else if (term->curs.x == 0 && term->curs.y > 0)
2698 term->curs.x = term->cols - 1, term->curs.y--;
2699 else if (term->wrapnext)
2700 term->wrapnext = FALSE;
2703 seen_disp_event(term);
2705 case '\016': /* LS1: Locking-shift one */
2706 compatibility(VT100);
2709 case '\017': /* LS0: Locking-shift zero */
2710 compatibility(VT100);
2713 case '\033': /* ESC: Escape */
2714 if (term->vt52_mode)
2715 term->termstate = VT52_ESC;
2717 compatibility(ANSIMIN);
2718 term->termstate = SEEN_ESC;
2719 term->esc_query = FALSE;
2722 case '\015': /* CR: Carriage return */
2724 term->wrapnext = FALSE;
2725 seen_disp_event(term);
2726 term->paste_hold = 0;
2728 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2730 case '\014': /* FF: Form feed */
2731 if (has_compat(SCOANSI)) {
2732 move(term, 0, 0, 0);
2733 erase_lots(term, FALSE, FALSE, TRUE);
2735 term->wrapnext = FALSE;
2736 seen_disp_event(term);
2739 case '\013': /* VT: Line tabulation */
2740 compatibility(VT100);
2741 case '\012': /* LF: Line feed */
2742 if (term->curs.y == term->marg_b)
2743 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2744 else if (term->curs.y < term->rows - 1)
2746 if (term->cfg.lfhascr)
2748 term->wrapnext = FALSE;
2749 seen_disp_event(term);
2750 term->paste_hold = 0;
2752 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2754 case '\t': /* HT: Character tabulation */
2756 pos old_curs = term->curs;
2757 termline *ldata = scrlineptr(term->curs.y);
2761 } while (term->curs.x < term->cols - 1 &&
2762 !term->tabs[term->curs.x]);
2764 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2765 if (term->curs.x >= term->cols / 2)
2766 term->curs.x = term->cols / 2 - 1;
2768 if (term->curs.x >= term->cols)
2769 term->curs.x = term->cols - 1;
2772 check_selection(term, old_curs, term->curs);
2774 seen_disp_event(term);
2778 switch (term->termstate) {
2780 /* Only graphic characters get this far;
2781 * ctrls are stripped above */
2783 termline *cline = scrlineptr(term->curs.y);
2788 width = wcwidth((wchar_t) c);
2790 if (term->wrapnext && term->wrap && width > 0) {
2791 cline->lattr |= LATTR_WRAPPED;
2792 if (term->curs.y == term->marg_b)
2793 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2794 else if (term->curs.y < term->rows - 1)
2797 term->wrapnext = FALSE;
2798 cline = scrlineptr(term->curs.y);
2800 if (term->insert && width > 0)
2802 if (term->selstate != NO_SELECTION) {
2803 pos cursplus = term->curs;
2805 check_selection(term, term->curs, cursplus);
2807 if (((c & CSET_MASK) == CSET_ASCII ||
2808 (c & CSET_MASK) == 0) &&
2810 logtraffic(term->logctx, (unsigned char) c,
2816 * If we're about to display a double-width
2817 * character starting in the rightmost
2818 * column, then we do something special
2819 * instead. We must print a space in the
2820 * last column of the screen, then wrap;
2821 * and we also set LATTR_WRAPPED2 which
2822 * instructs subsequent cut-and-pasting not
2823 * only to splice this line to the one
2824 * after it, but to ignore the space in the
2825 * last character position as well.
2826 * (Because what was actually output to the
2827 * terminal was presumably just a sequence
2828 * of CJK characters, and we don't want a
2829 * space to be pasted in the middle of
2830 * those just because they had the
2831 * misfortune to start in the wrong parity
2832 * column. xterm concurs.)
2834 check_boundary(term, term->curs.x, term->curs.y);
2835 check_boundary(term, term->curs.x+2, term->curs.y);
2836 if (term->curs.x == term->cols-1) {
2837 copy_termchar(cline, term->curs.x,
2839 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2840 if (term->curs.y == term->marg_b)
2841 scroll(term, term->marg_t, term->marg_b,
2843 else if (term->curs.y < term->rows - 1)
2846 /* Now we must check_boundary again, of course. */
2847 check_boundary(term, term->curs.x, term->curs.y);
2848 check_boundary(term, term->curs.x+2, term->curs.y);
2852 clear_cc(cline, term->curs.x);
2853 cline->chars[term->curs.x].chr = c;
2854 cline->chars[term->curs.x].attr = term->curr_attr;
2859 clear_cc(cline, term->curs.x);
2860 cline->chars[term->curs.x].chr = UCSWIDE;
2861 cline->chars[term->curs.x].attr = term->curr_attr;
2865 check_boundary(term, term->curs.x, term->curs.y);
2866 check_boundary(term, term->curs.x+1, term->curs.y);
2869 clear_cc(cline, term->curs.x);
2870 cline->chars[term->curs.x].chr = c;
2871 cline->chars[term->curs.x].attr = term->curr_attr;
2875 if (term->curs.x > 0) {
2876 int x = term->curs.x - 1;
2878 /* If we're in wrapnext state, the character
2879 * to combine with is _here_, not to our left. */
2884 * If the previous character is
2885 * UCSWIDE, back up another one.
2887 if (cline->chars[x].chr == UCSWIDE) {
2892 add_cc(cline, x, c);
2893 seen_disp_event(term);
2900 if (term->curs.x == term->cols) {
2902 term->wrapnext = TRUE;
2903 if (term->wrap && term->vt52_mode) {
2904 cline->lattr |= LATTR_WRAPPED;
2905 if (term->curs.y == term->marg_b)
2906 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2907 else if (term->curs.y < term->rows - 1)
2910 term->wrapnext = FALSE;
2913 seen_disp_event(term);
2919 * This state is virtually identical to SEEN_ESC, with the
2920 * exception that we have an OSC sequence in the pipeline,
2921 * and _if_ we see a backslash, we process it.
2925 term->termstate = TOPLEVEL;
2928 /* else fall through */
2930 if (c >= ' ' && c <= '/') {
2931 if (term->esc_query)
2932 term->esc_query = -1;
2934 term->esc_query = c;
2937 term->termstate = TOPLEVEL;
2938 switch (ANSI(c, term->esc_query)) {
2939 case '[': /* enter CSI mode */
2940 term->termstate = SEEN_CSI;
2941 term->esc_nargs = 1;
2942 term->esc_args[0] = ARG_DEFAULT;
2943 term->esc_query = FALSE;
2945 case ']': /* OSC: xterm escape sequences */
2946 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
2947 compatibility(OTHER);
2948 term->termstate = SEEN_OSC;
2949 term->esc_args[0] = 0;
2951 case '7': /* DECSC: save cursor */
2952 compatibility(VT100);
2953 save_cursor(term, TRUE);
2955 case '8': /* DECRC: restore cursor */
2956 compatibility(VT100);
2957 save_cursor(term, FALSE);
2958 seen_disp_event(term);
2960 case '=': /* DECKPAM: Keypad application mode */
2961 compatibility(VT100);
2962 term->app_keypad_keys = TRUE;
2964 case '>': /* DECKPNM: Keypad numeric mode */
2965 compatibility(VT100);
2966 term->app_keypad_keys = FALSE;
2968 case 'D': /* IND: exactly equivalent to LF */
2969 compatibility(VT100);
2970 if (term->curs.y == term->marg_b)
2971 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2972 else if (term->curs.y < term->rows - 1)
2974 term->wrapnext = FALSE;
2975 seen_disp_event(term);
2977 case 'E': /* NEL: exactly equivalent to CR-LF */
2978 compatibility(VT100);
2980 if (term->curs.y == term->marg_b)
2981 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2982 else if (term->curs.y < term->rows - 1)
2984 term->wrapnext = FALSE;
2985 seen_disp_event(term);
2987 case 'M': /* RI: reverse index - backwards LF */
2988 compatibility(VT100);
2989 if (term->curs.y == term->marg_t)
2990 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
2991 else if (term->curs.y > 0)
2993 term->wrapnext = FALSE;
2994 seen_disp_event(term);
2996 case 'Z': /* DECID: terminal type query */
2997 compatibility(VT100);
2999 ldisc_send(term->ldisc, term->id_string,
3000 strlen(term->id_string), 0);
3002 case 'c': /* RIS: restore power-on settings */
3003 compatibility(VT100);
3005 if (term->ldisc) /* cause ldisc to notice changes */
3006 ldisc_send(term->ldisc, NULL, 0, 0);
3007 if (term->reset_132) {
3008 if (!term->cfg.no_remote_resize)
3009 request_resize(term->frontend, 80, term->rows);
3010 term->reset_132 = 0;
3013 seen_disp_event(term);
3015 case 'H': /* HTS: set a tab */
3016 compatibility(VT100);
3017 term->tabs[term->curs.x] = TRUE;
3020 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3021 compatibility(VT100);
3027 for (i = 0; i < term->rows; i++) {
3028 ldata = scrlineptr(i);
3029 for (j = 0; j < term->cols; j++) {
3030 copy_termchar(ldata, j,
3031 &term->basic_erase_char);
3032 ldata->chars[j].chr = 'E';
3034 ldata->lattr = LATTR_NORM;
3037 seen_disp_event(term);
3038 scrtop.x = scrtop.y = 0;
3040 scrbot.y = term->rows;
3041 check_selection(term, scrtop, scrbot);
3045 case ANSI('3', '#'):
3046 case ANSI('4', '#'):
3047 case ANSI('5', '#'):
3048 case ANSI('6', '#'):
3049 compatibility(VT100);
3053 switch (ANSI(c, term->esc_query)) {
3054 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3057 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3060 case ANSI('5', '#'): /* DECSWL: normal */
3061 nlattr = LATTR_NORM;
3063 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3064 nlattr = LATTR_WIDE;
3067 scrlineptr(term->curs.y)->lattr = nlattr;
3070 /* GZD4: G0 designate 94-set */
3071 case ANSI('A', '('):
3072 compatibility(VT100);
3073 if (!term->cfg.no_remote_charset)
3074 term->cset_attr[0] = CSET_GBCHR;
3076 case ANSI('B', '('):
3077 compatibility(VT100);
3078 if (!term->cfg.no_remote_charset)
3079 term->cset_attr[0] = CSET_ASCII;
3081 case ANSI('0', '('):
3082 compatibility(VT100);
3083 if (!term->cfg.no_remote_charset)
3084 term->cset_attr[0] = CSET_LINEDRW;
3086 case ANSI('U', '('):
3087 compatibility(OTHER);
3088 if (!term->cfg.no_remote_charset)
3089 term->cset_attr[0] = CSET_SCOACS;
3091 /* G1D4: G1-designate 94-set */
3092 case ANSI('A', ')'):
3093 compatibility(VT100);
3094 if (!term->cfg.no_remote_charset)
3095 term->cset_attr[1] = CSET_GBCHR;
3097 case ANSI('B', ')'):
3098 compatibility(VT100);
3099 if (!term->cfg.no_remote_charset)
3100 term->cset_attr[1] = CSET_ASCII;
3102 case ANSI('0', ')'):
3103 compatibility(VT100);
3104 if (!term->cfg.no_remote_charset)
3105 term->cset_attr[1] = CSET_LINEDRW;
3107 case ANSI('U', ')'):
3108 compatibility(OTHER);
3109 if (!term->cfg.no_remote_charset)
3110 term->cset_attr[1] = CSET_SCOACS;
3112 /* DOCS: Designate other coding system */
3113 case ANSI('8', '%'): /* Old Linux code */
3114 case ANSI('G', '%'):
3115 compatibility(OTHER);
3116 if (!term->cfg.no_remote_charset)
3119 case ANSI('@', '%'):
3120 compatibility(OTHER);
3121 if (!term->cfg.no_remote_charset)
3127 term->termstate = TOPLEVEL; /* default */
3129 if (term->esc_nargs <= ARGS_MAX) {
3130 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3131 term->esc_args[term->esc_nargs - 1] = 0;
3132 term->esc_args[term->esc_nargs - 1] =
3133 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3135 term->termstate = SEEN_CSI;
3136 } else if (c == ';') {
3137 if (++term->esc_nargs <= ARGS_MAX)
3138 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3139 term->termstate = SEEN_CSI;
3140 } else if (c < '@') {
3141 if (term->esc_query)
3142 term->esc_query = -1;
3144 term->esc_query = TRUE;
3146 term->esc_query = c;
3147 term->termstate = SEEN_CSI;
3149 switch (ANSI(c, term->esc_query)) {
3150 case 'A': /* CUU: move up N lines */
3151 move(term, term->curs.x,
3152 term->curs.y - def(term->esc_args[0], 1), 1);
3153 seen_disp_event(term);
3155 case 'e': /* VPR: move down N lines */
3156 compatibility(ANSI);
3158 case 'B': /* CUD: Cursor down */
3159 move(term, term->curs.x,
3160 term->curs.y + def(term->esc_args[0], 1), 1);
3161 seen_disp_event(term);
3163 case ANSI('c', '>'): /* DA: report xterm version */
3164 compatibility(OTHER);
3165 /* this reports xterm version 136 so that VIM can
3166 use the drag messages from the mouse reporting */
3168 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3170 case 'a': /* HPR: move right N cols */
3171 compatibility(ANSI);
3173 case 'C': /* CUF: Cursor right */
3174 move(term, term->curs.x + def(term->esc_args[0], 1),
3176 seen_disp_event(term);
3178 case 'D': /* CUB: move left N cols */
3179 move(term, term->curs.x - def(term->esc_args[0], 1),
3181 seen_disp_event(term);
3183 case 'E': /* CNL: move down N lines and CR */
3184 compatibility(ANSI);
3186 term->curs.y + def(term->esc_args[0], 1), 1);
3187 seen_disp_event(term);
3189 case 'F': /* CPL: move up N lines and CR */
3190 compatibility(ANSI);
3192 term->curs.y - def(term->esc_args[0], 1), 1);
3193 seen_disp_event(term);
3196 case '`': /* HPA: set horizontal posn */
3197 compatibility(ANSI);
3198 move(term, def(term->esc_args[0], 1) - 1,
3200 seen_disp_event(term);
3202 case 'd': /* VPA: set vertical posn */
3203 compatibility(ANSI);
3204 move(term, term->curs.x,
3205 ((term->dec_om ? term->marg_t : 0) +
3206 def(term->esc_args[0], 1) - 1),
3207 (term->dec_om ? 2 : 0));
3208 seen_disp_event(term);
3211 case 'f': /* HVP: set horz and vert posns at once */
3212 if (term->esc_nargs < 2)
3213 term->esc_args[1] = ARG_DEFAULT;
3214 move(term, def(term->esc_args[1], 1) - 1,
3215 ((term->dec_om ? term->marg_t : 0) +
3216 def(term->esc_args[0], 1) - 1),
3217 (term->dec_om ? 2 : 0));
3218 seen_disp_event(term);
3220 case 'J': /* ED: erase screen or parts of it */
3222 unsigned int i = def(term->esc_args[0], 0) + 1;
3225 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3228 seen_disp_event(term);
3230 case 'K': /* EL: erase line or parts of it */
3232 unsigned int i = def(term->esc_args[0], 0) + 1;
3235 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3237 seen_disp_event(term);
3239 case 'L': /* IL: insert lines */
3240 compatibility(VT102);
3241 if (term->curs.y <= term->marg_b)
3242 scroll(term, term->curs.y, term->marg_b,
3243 -def(term->esc_args[0], 1), FALSE);
3244 seen_disp_event(term);
3246 case 'M': /* DL: delete lines */
3247 compatibility(VT102);
3248 if (term->curs.y <= term->marg_b)
3249 scroll(term, term->curs.y, term->marg_b,
3250 def(term->esc_args[0], 1),
3252 seen_disp_event(term);
3254 case '@': /* ICH: insert chars */
3255 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3256 compatibility(VT102);
3257 insch(term, def(term->esc_args[0], 1));
3258 seen_disp_event(term);
3260 case 'P': /* DCH: delete chars */
3261 compatibility(VT102);
3262 insch(term, -def(term->esc_args[0], 1));
3263 seen_disp_event(term);
3265 case 'c': /* DA: terminal type query */
3266 compatibility(VT100);
3267 /* This is the response for a VT102 */
3269 ldisc_send(term->ldisc, term->id_string,
3270 strlen(term->id_string), 0);
3272 case 'n': /* DSR: cursor position query */
3274 if (term->esc_args[0] == 6) {
3276 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3278 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3279 } else if (term->esc_args[0] == 5) {
3280 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3284 case 'h': /* SM: toggle modes to high */
3286 compatibility(VT100);
3289 for (i = 0; i < term->esc_nargs; i++)
3290 toggle_mode(term, term->esc_args[i],
3291 term->esc_query, TRUE);
3294 case 'i': /* MC: Media copy */
3296 compatibility(VT100);
3298 if (term->esc_nargs != 1) break;
3299 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3300 term->printing = TRUE;
3301 term->only_printing = !term->esc_query;
3302 term->print_state = 0;
3303 term_print_setup(term);
3304 } else if (term->esc_args[0] == 4 &&
3306 term_print_finish(term);
3310 case 'l': /* RM: toggle modes to low */
3312 compatibility(VT100);
3315 for (i = 0; i < term->esc_nargs; i++)
3316 toggle_mode(term, term->esc_args[i],
3317 term->esc_query, FALSE);
3320 case 'g': /* TBC: clear tabs */
3321 compatibility(VT100);
3322 if (term->esc_nargs == 1) {
3323 if (term->esc_args[0] == 0) {
3324 term->tabs[term->curs.x] = FALSE;
3325 } else if (term->esc_args[0] == 3) {
3327 for (i = 0; i < term->cols; i++)
3328 term->tabs[i] = FALSE;
3332 case 'r': /* DECSTBM: set scroll margins */
3333 compatibility(VT100);
3334 if (term->esc_nargs <= 2) {
3336 top = def(term->esc_args[0], 1) - 1;
3337 bot = (term->esc_nargs <= 1
3338 || term->esc_args[1] == 0 ?
3340 def(term->esc_args[1], term->rows)) - 1;
3341 if (bot >= term->rows)
3342 bot = term->rows - 1;
3343 /* VTTEST Bug 9 - if region is less than 2 lines
3344 * don't change region.
3346 if (bot - top > 0) {
3351 * I used to think the cursor should be
3352 * placed at the top of the newly marginned
3353 * area. Apparently not: VMS TPU falls over
3356 * Well actually it should for
3359 term->curs.y = (term->dec_om ?
3361 seen_disp_event(term);
3365 case 'm': /* SGR: set graphics rendition */
3368 * A VT100 without the AVO only had one
3369 * attribute, either underline or
3370 * reverse video depending on the
3371 * cursor type, this was selected by
3375 * This is sometimes DIM, eg on the
3378 * This is sometimes INVIS various ANSI.
3380 * This like 22 disables BOLD, DIM and INVIS
3382 * The ANSI colours appear on any
3383 * terminal that has colour (obviously)
3384 * but the interaction between sgr0 and
3385 * the colours varies but is usually
3386 * related to the background colour
3387 * erase item. The interaction between
3388 * colour attributes and the mono ones
3389 * is also very implementation
3392 * The 39 and 49 attributes are likely
3393 * to be unimplemented.
3396 for (i = 0; i < term->esc_nargs; i++) {
3397 switch (def(term->esc_args[i], 0)) {
3398 case 0: /* restore defaults */
3399 term->curr_attr = term->default_attr;
3401 case 1: /* enable bold */
3402 compatibility(VT100AVO);
3403 term->curr_attr |= ATTR_BOLD;
3405 case 21: /* (enable double underline) */
3406 compatibility(OTHER);
3407 case 4: /* enable underline */
3408 compatibility(VT100AVO);
3409 term->curr_attr |= ATTR_UNDER;
3411 case 5: /* enable blink */
3412 compatibility(VT100AVO);
3413 term->curr_attr |= ATTR_BLINK;
3415 case 6: /* SCO light bkgrd */
3416 compatibility(SCOANSI);
3417 term->blink_is_real = FALSE;
3418 term->curr_attr |= ATTR_BLINK;
3419 term_schedule_tblink(term);
3421 case 7: /* enable reverse video */
3422 term->curr_attr |= ATTR_REVERSE;
3424 case 10: /* SCO acs off */
3425 compatibility(SCOANSI);
3426 if (term->cfg.no_remote_charset) break;
3427 term->sco_acs = 0; break;
3428 case 11: /* SCO acs on */
3429 compatibility(SCOANSI);
3430 if (term->cfg.no_remote_charset) break;
3431 term->sco_acs = 1; break;
3432 case 12: /* SCO acs on, |0x80 */
3433 compatibility(SCOANSI);
3434 if (term->cfg.no_remote_charset) break;
3435 term->sco_acs = 2; break;
3436 case 22: /* disable bold */
3437 compatibility2(OTHER, VT220);
3438 term->curr_attr &= ~ATTR_BOLD;
3440 case 24: /* disable underline */
3441 compatibility2(OTHER, VT220);
3442 term->curr_attr &= ~ATTR_UNDER;
3444 case 25: /* disable blink */
3445 compatibility2(OTHER, VT220);
3446 term->curr_attr &= ~ATTR_BLINK;
3448 case 27: /* disable reverse video */
3449 compatibility2(OTHER, VT220);
3450 term->curr_attr &= ~ATTR_REVERSE;
3461 term->curr_attr &= ~ATTR_FGMASK;
3463 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3473 /* xterm-style bright foreground */
3474 term->curr_attr &= ~ATTR_FGMASK;
3476 ((term->esc_args[i] - 90 + 16)
3479 case 39: /* default-foreground */
3480 term->curr_attr &= ~ATTR_FGMASK;
3481 term->curr_attr |= ATTR_DEFFG;
3492 term->curr_attr &= ~ATTR_BGMASK;
3494 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3504 /* xterm-style bright background */
3505 term->curr_attr &= ~ATTR_BGMASK;
3507 ((term->esc_args[i] - 100 + 16)
3510 case 49: /* default-background */
3511 term->curr_attr &= ~ATTR_BGMASK;
3512 term->curr_attr |= ATTR_DEFBG;
3516 set_erase_char(term);
3519 case 's': /* save cursor */
3520 save_cursor(term, TRUE);
3522 case 'u': /* restore cursor */
3523 save_cursor(term, FALSE);
3524 seen_disp_event(term);
3526 case 't': /* DECSLPP: set page size - ie window height */
3528 * VT340/VT420 sequence DECSLPP, DEC only allows values
3529 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3530 * illegal values (eg first arg 1..9) for window changing
3533 if (term->esc_nargs <= 1
3534 && (term->esc_args[0] < 1 ||
3535 term->esc_args[0] >= 24)) {
3536 compatibility(VT340TEXT);
3537 if (!term->cfg.no_remote_resize)
3538 request_resize(term->frontend, term->cols,
3539 def(term->esc_args[0], 24));
3541 } else if (term->esc_nargs >= 1 &&
3542 term->esc_args[0] >= 1 &&
3543 term->esc_args[0] < 24) {
3544 compatibility(OTHER);
3546 switch (term->esc_args[0]) {
3550 set_iconic(term->frontend, FALSE);
3553 set_iconic(term->frontend, TRUE);
3556 if (term->esc_nargs >= 3) {
3557 if (!term->cfg.no_remote_resize)
3558 move_window(term->frontend,
3559 def(term->esc_args[1], 0),
3560 def(term->esc_args[2], 0));
3564 /* We should resize the window to a given
3565 * size in pixels here, but currently our
3566 * resizing code isn't healthy enough to
3571 set_zorder(term->frontend, TRUE);
3574 /* move to bottom */
3575 set_zorder(term->frontend, FALSE);
3578 refresh_window(term->frontend);
3581 if (term->esc_nargs >= 3) {
3582 if (!term->cfg.no_remote_resize)
3583 request_resize(term->frontend,
3584 def(term->esc_args[2], term->cfg.width),
3585 def(term->esc_args[1], term->cfg.height));
3589 if (term->esc_nargs >= 2)
3590 set_zoomed(term->frontend,
3596 ldisc_send(term->ldisc,
3597 is_iconic(term->frontend) ?
3598 "\033[1t" : "\033[2t", 4, 0);
3602 get_window_pos(term->frontend, &x, &y);
3603 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3604 ldisc_send(term->ldisc, buf, len, 0);
3609 get_window_pixels(term->frontend, &x, &y);
3610 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3611 ldisc_send(term->ldisc, buf, len, 0);
3616 len = sprintf(buf, "\033[8;%d;%dt",
3617 term->rows, term->cols);
3618 ldisc_send(term->ldisc, buf, len, 0);
3623 * Hmmm. Strictly speaking we
3624 * should return `the size of the
3625 * screen in characters', but
3626 * that's not easy: (a) window
3627 * furniture being what it is it's
3628 * hard to compute, and (b) in
3629 * resize-font mode maximising the
3630 * window wouldn't change the
3631 * number of characters. *shrug*. I
3632 * think we'll ignore it for the
3633 * moment and see if anyone
3634 * complains, and then ask them
3635 * what they would like it to do.
3640 !term->cfg.no_remote_qtitle) {
3641 p = get_window_title(term->frontend, TRUE);
3643 ldisc_send(term->ldisc, "\033]L", 3, 0);
3644 ldisc_send(term->ldisc, p, len, 0);
3645 ldisc_send(term->ldisc, "\033\\", 2, 0);
3650 !term->cfg.no_remote_qtitle) {
3651 p = get_window_title(term->frontend,FALSE);
3653 ldisc_send(term->ldisc, "\033]l", 3, 0);
3654 ldisc_send(term->ldisc, p, len, 0);
3655 ldisc_send(term->ldisc, "\033\\", 2, 0);
3661 case 'S': /* SU: Scroll up */
3662 compatibility(SCOANSI);
3663 scroll(term, term->marg_t, term->marg_b,
3664 def(term->esc_args[0], 1), TRUE);
3665 term->wrapnext = FALSE;
3666 seen_disp_event(term);
3668 case 'T': /* SD: Scroll down */
3669 compatibility(SCOANSI);
3670 scroll(term, term->marg_t, term->marg_b,
3671 -def(term->esc_args[0], 1), TRUE);
3672 term->wrapnext = FALSE;
3673 seen_disp_event(term);
3675 case ANSI('|', '*'): /* DECSNLS */
3677 * Set number of lines on screen
3678 * VT420 uses VGA like hardware and can
3679 * support any size in reasonable range
3680 * (24..49 AIUI) with no default specified.
3682 compatibility(VT420);
3683 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3684 if (!term->cfg.no_remote_resize)
3685 request_resize(term->frontend, term->cols,
3686 def(term->esc_args[0],
3691 case ANSI('|', '$'): /* DECSCPP */
3693 * Set number of columns per page
3694 * Docs imply range is only 80 or 132, but
3697 compatibility(VT340TEXT);
3698 if (term->esc_nargs <= 1) {
3699 if (!term->cfg.no_remote_resize)
3700 request_resize(term->frontend,
3701 def(term->esc_args[0],
3702 term->cfg.width), term->rows);
3706 case 'X': /* ECH: write N spaces w/o moving cursor */
3707 /* XXX VTTEST says this is vt220, vt510 manual
3709 compatibility(ANSIMIN);
3711 int n = def(term->esc_args[0], 1);
3713 int p = term->curs.x;
3714 termline *cline = scrlineptr(term->curs.y);
3716 if (n > term->cols - term->curs.x)
3717 n = term->cols - term->curs.x;
3718 cursplus = term->curs;
3720 check_boundary(term, term->curs.x, term->curs.y);
3721 check_boundary(term, term->curs.x+n, term->curs.y);
3722 check_selection(term, term->curs, cursplus);
3724 copy_termchar(cline, p++,
3726 seen_disp_event(term);
3729 case 'x': /* DECREQTPARM: report terminal characteristics */
3730 compatibility(VT100);
3733 int i = def(term->esc_args[0], 0);
3734 if (i == 0 || i == 1) {
3735 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3737 ldisc_send(term->ldisc, buf, 20, 0);
3741 case 'Z': /* CBT: BackTab for xterm */
3742 compatibility(OTHER);
3744 int i = def(term->esc_args[0], 1);
3745 pos old_curs = term->curs;
3747 for(;i>0 && term->curs.x>0; i--) {
3750 } while (term->curs.x >0 &&
3751 !term->tabs[term->curs.x]);
3753 check_selection(term, old_curs, term->curs);
3756 case ANSI('c', '='): /* Hide or Show Cursor */
3757 compatibility(SCOANSI);
3758 switch(term->esc_args[0]) {
3759 case 0: /* hide cursor */
3760 term->cursor_on = FALSE;
3762 case 1: /* restore cursor */
3763 term->big_cursor = FALSE;
3764 term->cursor_on = TRUE;
3766 case 2: /* block cursor */
3767 term->big_cursor = TRUE;
3768 term->cursor_on = TRUE;
3772 case ANSI('C', '='):
3774 * set cursor start on scanline esc_args[0] and
3775 * end on scanline esc_args[1].If you set
3776 * the bottom scan line to a value less than
3777 * the top scan line, the cursor will disappear.
3779 compatibility(SCOANSI);
3780 if (term->esc_nargs >= 2) {
3781 if (term->esc_args[0] > term->esc_args[1])
3782 term->cursor_on = FALSE;
3784 term->cursor_on = TRUE;
3787 case ANSI('D', '='):
3788 compatibility(SCOANSI);
3789 term->blink_is_real = FALSE;
3790 term_schedule_tblink(term);
3791 if (term->esc_args[0]>=1)
3792 term->curr_attr |= ATTR_BLINK;
3794 term->curr_attr &= ~ATTR_BLINK;
3796 case ANSI('E', '='):
3797 compatibility(SCOANSI);
3798 term->blink_is_real = (term->esc_args[0] >= 1);
3799 term_schedule_tblink(term);
3801 case ANSI('F', '='): /* set normal foreground */
3802 compatibility(SCOANSI);
3803 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3805 (sco2ansicolour[term->esc_args[0] & 0x7] |
3806 ((term->esc_args[0] & 0x8) << 1)) <<
3808 term->curr_attr &= ~ATTR_FGMASK;
3809 term->curr_attr |= colour;
3810 term->default_attr &= ~ATTR_FGMASK;
3811 term->default_attr |= colour;
3814 case ANSI('G', '='): /* set normal background */
3815 compatibility(SCOANSI);
3816 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3818 (sco2ansicolour[term->esc_args[0] & 0x7] |
3819 ((term->esc_args[0] & 0x8) << 1)) <<
3821 term->curr_attr &= ~ATTR_BGMASK;
3822 term->curr_attr |= colour;
3823 term->default_attr &= ~ATTR_BGMASK;
3824 term->default_attr |= colour;
3827 case ANSI('L', '='):
3828 compatibility(SCOANSI);
3829 term->use_bce = (term->esc_args[0] <= 0);
3830 set_erase_char(term);
3832 case ANSI('p', '"'): /* DECSCL: set compat level */
3834 * Allow the host to make this emulator a
3835 * 'perfect' VT102. This first appeared in
3836 * the VT220, but we do need to get back to
3837 * PuTTY mode so I won't check it.
3839 * The arg in 40..42,50 are a PuTTY extension.
3840 * The 2nd arg, 8bit vs 7bit is not checked.
3842 * Setting VT102 mode should also change
3843 * the Fkeys to generate PF* codes as a
3844 * real VT102 has no Fkeys. The VT220 does
3845 * this, F11..F13 become ESC,BS,LF other
3846 * Fkeys send nothing.
3848 * Note ESC c will NOT change this!
3851 switch (term->esc_args[0]) {
3853 term->compatibility_level &= ~TM_VTXXX;
3854 term->compatibility_level |= TM_VT102;
3857 term->compatibility_level &= ~TM_VTXXX;
3858 term->compatibility_level |= TM_VT220;
3862 if (term->esc_args[0] > 60 &&
3863 term->esc_args[0] < 70)
3864 term->compatibility_level |= TM_VTXXX;
3868 term->compatibility_level &= TM_VTXXX;
3871 term->compatibility_level = TM_PUTTY;
3874 term->compatibility_level = TM_SCOANSI;
3878 term->compatibility_level = TM_PUTTY;
3884 /* Change the response to CSI c */
3885 if (term->esc_args[0] == 50) {
3888 strcpy(term->id_string, "\033[?");
3889 for (i = 1; i < term->esc_nargs; i++) {
3891 strcat(term->id_string, ";");
3892 sprintf(lbuf, "%d", term->esc_args[i]);
3893 strcat(term->id_string, lbuf);
3895 strcat(term->id_string, "c");
3898 /* Is this a good idea ?
3899 * Well we should do a soft reset at this point ...
3901 if (!has_compat(VT420) && has_compat(VT100)) {
3902 if (!term->cfg.no_remote_resize) {
3903 if (term->reset_132)
3904 request_resize(132, 24);
3906 request_resize(80, 24);
3914 term->osc_w = FALSE;
3916 case 'P': /* Linux palette sequence */
3917 term->termstate = SEEN_OSC_P;
3918 term->osc_strlen = 0;
3920 case 'R': /* Linux palette reset */
3921 palette_reset(term->frontend);
3922 term_invalidate(term);
3923 term->termstate = TOPLEVEL;
3925 case 'W': /* word-set */
3926 term->termstate = SEEN_OSC_W;
3939 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
3943 * Grotty hack to support xterm and DECterm title
3944 * sequences concurrently.
3946 if (term->esc_args[0] == 2) {
3947 term->esc_args[0] = 1;
3950 /* else fall through */
3952 term->termstate = OSC_STRING;
3953 term->osc_strlen = 0;
3958 * This OSC stuff is EVIL. It takes just one character to get into
3959 * sysline mode and it's not initially obvious how to get out.
3960 * So I've added CR and LF as string aborts.
3961 * This shouldn't effect compatibility as I believe embedded
3962 * control characters are supposed to be interpreted (maybe?)
3963 * and they don't display anything useful anyway.
3967 if (c == '\012' || c == '\015') {
3968 term->termstate = TOPLEVEL;
3969 } else if (c == 0234 || c == '\007') {
3971 * These characters terminate the string; ST and BEL
3972 * terminate the sequence and trigger instant
3973 * processing of it, whereas ESC goes back to SEEN_ESC
3974 * mode unless it is followed by \, in which case it is
3975 * synonymous with ST in the first place.
3978 term->termstate = TOPLEVEL;
3979 } else if (c == '\033')
3980 term->termstate = OSC_MAYBE_ST;
3981 else if (term->osc_strlen < OSC_STR_MAX)
3982 term->osc_string[term->osc_strlen++] = (char)c;
3986 int max = (term->osc_strlen == 0 ? 21 : 16);
3988 if ((int)c >= '0' && (int)c <= '9')
3990 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
3992 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
3995 term->termstate = TOPLEVEL;
3998 term->osc_string[term->osc_strlen++] = val;
3999 if (term->osc_strlen >= 7) {
4000 palette_set(term->frontend, term->osc_string[0],
4001 term->osc_string[1] * 16 + term->osc_string[2],
4002 term->osc_string[3] * 16 + term->osc_string[4],
4003 term->osc_string[5] * 16 + term->osc_string[6]);
4004 term_invalidate(term);
4005 term->termstate = TOPLEVEL;
4021 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4024 term->termstate = OSC_STRING;
4025 term->osc_strlen = 0;
4029 term->termstate = TOPLEVEL;
4030 seen_disp_event(term);
4033 move(term, term->curs.x, term->curs.y - 1, 1);
4036 move(term, term->curs.x, term->curs.y + 1, 1);
4039 move(term, term->curs.x + 1, term->curs.y, 1);
4042 move(term, term->curs.x - 1, term->curs.y, 1);
4045 * From the VT100 Manual
4046 * NOTE: The special graphics characters in the VT100
4047 * are different from those in the VT52
4049 * From VT102 manual:
4050 * 137 _ Blank - Same
4051 * 140 ` Reserved - Humm.
4052 * 141 a Solid rectangle - Similar
4053 * 142 b 1/ - Top half of fraction for the
4054 * 143 c 3/ - subscript numbers below.
4057 * 146 f Degrees - Same
4058 * 147 g Plus or minus - Same
4060 * 151 i Ellipsis (dots)
4063 * 154 l Bar at scan 0
4064 * 155 m Bar at scan 1
4065 * 156 n Bar at scan 2
4066 * 157 o Bar at scan 3 - Similar
4067 * 160 p Bar at scan 4 - Similar
4068 * 161 q Bar at scan 5 - Similar
4069 * 162 r Bar at scan 6 - Same
4070 * 163 s Bar at scan 7 - Similar
4085 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4088 term->cset_attr[term->cset = 0] = CSET_ASCII;
4091 move(term, 0, 0, 0);
4094 if (term->curs.y == 0)
4095 scroll(term, 0, term->rows - 1, -1, TRUE);
4096 else if (term->curs.y > 0)
4098 term->wrapnext = FALSE;
4101 erase_lots(term, FALSE, FALSE, TRUE);
4105 erase_lots(term, TRUE, FALSE, TRUE);
4109 /* XXX Print cursor line */
4112 /* XXX Start controller mode */
4115 /* XXX Stop controller mode */
4119 term->termstate = VT52_Y1;
4123 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4126 term->app_keypad_keys = TRUE;
4129 term->app_keypad_keys = FALSE;
4132 /* XXX This should switch to VT100 mode not current or default
4133 * VT mode. But this will only have effect in a VT220+
4136 term->vt52_mode = FALSE;
4137 term->blink_is_real = term->cfg.blinktext;
4138 term_schedule_tblink(term);
4142 /* XXX Enter auto print mode */
4145 /* XXX Exit auto print mode */
4148 /* XXX Print screen */
4154 /* compatibility(ATARI) */
4155 move(term, 0, 0, 0);
4156 erase_lots(term, FALSE, FALSE, TRUE);
4160 /* compatibility(ATARI) */
4161 if (term->curs.y <= term->marg_b)
4162 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4165 /* compatibility(ATARI) */
4166 if (term->curs.y <= term->marg_b)
4167 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4170 /* compatibility(ATARI) */
4171 term->termstate = VT52_FG;
4174 /* compatibility(ATARI) */
4175 term->termstate = VT52_BG;
4178 /* compatibility(ATARI) */
4179 erase_lots(term, FALSE, TRUE, FALSE);
4183 /* compatibility(ATARI) */
4184 term->cursor_on = TRUE;
4187 /* compatibility(ATARI) */
4188 term->cursor_on = FALSE;
4190 /* case 'j': Save cursor position - broken on ST */
4191 /* case 'k': Restore cursor position */
4193 /* compatibility(ATARI) */
4194 erase_lots(term, TRUE, TRUE, TRUE);
4196 term->wrapnext = FALSE;
4199 /* compatibility(ATARI) */
4200 erase_lots(term, TRUE, TRUE, FALSE);
4203 /* compatibility(ATARI) */
4204 term->curr_attr |= ATTR_REVERSE;
4207 /* compatibility(ATARI) */
4208 term->curr_attr &= ~ATTR_REVERSE;
4210 case 'v': /* wrap Autowrap on - Wyse style */
4211 /* compatibility(ATARI) */
4214 case 'w': /* Autowrap off */
4215 /* compatibility(ATARI) */
4220 /* compatibility(OTHER) */
4221 term->vt52_bold = FALSE;
4222 term->curr_attr = ATTR_DEFAULT;
4223 set_erase_char(term);
4226 /* compatibility(VI50) */
4227 term->curr_attr |= ATTR_UNDER;
4230 /* compatibility(VI50) */
4231 term->curr_attr &= ~ATTR_UNDER;
4234 /* compatibility(VI50) */
4235 term->vt52_bold = TRUE;
4236 term->curr_attr |= ATTR_BOLD;
4239 /* compatibility(VI50) */
4240 term->vt52_bold = FALSE;
4241 term->curr_attr &= ~ATTR_BOLD;
4247 term->termstate = VT52_Y2;
4248 move(term, term->curs.x, c - ' ', 0);
4251 term->termstate = TOPLEVEL;
4252 move(term, c - ' ', term->curs.y, 0);
4257 term->termstate = TOPLEVEL;
4258 term->curr_attr &= ~ATTR_FGMASK;
4259 term->curr_attr &= ~ATTR_BOLD;
4260 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
4261 if ((c & 0x8) || term->vt52_bold)
4262 term->curr_attr |= ATTR_BOLD;
4264 set_erase_char(term);
4267 term->termstate = TOPLEVEL;
4268 term->curr_attr &= ~ATTR_BGMASK;
4269 term->curr_attr &= ~ATTR_BLINK;
4270 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
4272 /* Note: bold background */
4274 term->curr_attr |= ATTR_BLINK;
4276 set_erase_char(term);
4279 default: break; /* placate gcc warning about enum use */
4281 if (term->selstate != NO_SELECTION) {
4282 pos cursplus = term->curs;
4284 check_selection(term, term->curs, cursplus);
4288 term_print_flush(term);
4289 logflush(term->logctx);
4293 * To prevent having to run the reasonably tricky bidi algorithm
4294 * too many times, we maintain a cache of the last lineful of data
4295 * fed to the algorithm on each line of the display.
4297 static int term_bidi_cache_hit(Terminal *term, int line,
4298 termchar *lbefore, int width)
4302 if (!term->pre_bidi_cache)
4303 return FALSE; /* cache doesn't even exist yet! */
4305 if (line >= term->bidi_cache_size)
4306 return FALSE; /* cache doesn't have this many lines */
4308 if (!term->pre_bidi_cache[line].chars)
4309 return FALSE; /* cache doesn't contain _this_ line */
4311 if (term->pre_bidi_cache[line].width != width)
4312 return FALSE; /* line is wrong width */
4314 for (i = 0; i < width; i++)
4315 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4316 return FALSE; /* line doesn't match cache */
4318 return TRUE; /* it didn't match. */
4321 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4322 termchar *lafter, int width)
4324 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4325 int j = term->bidi_cache_size;
4326 term->bidi_cache_size = line+1;
4327 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4328 term->bidi_cache_size,
4329 struct bidi_cache_entry);
4330 term->post_bidi_cache = sresize(term->post_bidi_cache,
4331 term->bidi_cache_size,
4332 struct bidi_cache_entry);
4333 while (j < term->bidi_cache_size) {
4334 term->pre_bidi_cache[j].chars =
4335 term->post_bidi_cache[j].chars = NULL;
4336 term->pre_bidi_cache[j].width =
4337 term->post_bidi_cache[j].width = -1;
4342 sfree(term->pre_bidi_cache[line].chars);
4343 sfree(term->post_bidi_cache[line].chars);
4345 term->pre_bidi_cache[line].width = width;
4346 term->pre_bidi_cache[line].chars = snewn(width, termchar);
4347 term->post_bidi_cache[line].width = width;
4348 term->post_bidi_cache[line].chars = snewn(width, termchar);
4350 memcpy(term->pre_bidi_cache[line].chars, lbefore, width * TSIZE);
4351 memcpy(term->post_bidi_cache[line].chars, lafter, width * TSIZE);
4355 * Given a context, update the window. Out of paranoia, we don't
4356 * allow WM_PAINT responses to do scrolling optimisations.
4358 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4360 int i, it, j, our_curs_y, our_curs_x;
4365 termchar cursor_background;
4366 #ifdef OPTIMISE_SCROLL
4367 struct scrollregion *sr;
4368 #endif /* OPTIMISE_SCROLL */
4370 cursor_background = term->basic_erase_char;
4373 ch = snewn(chlen, wchar_t);
4375 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4378 * screen array, disptop, scrtop,
4380 * cfg.blinkpc, blink_is_real, tblinker,
4381 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4384 /* Has the cursor position or type changed ? */
4385 if (term->cursor_on) {
4386 if (term->has_focus) {
4387 if (term->cblinker || !term->cfg.blink_cur)
4388 cursor = TATTR_ACTCURS;
4392 cursor = TATTR_PASCURS;
4394 cursor |= TATTR_RIGHTCURS;
4397 our_curs_y = term->curs.y - term->disptop;
4400 * Adjust the cursor position in the case where it's
4401 * resting on the right-hand half of a CJK wide character.
4402 * xterm's behaviour here, which seems adequate to me, is
4403 * to display the cursor covering the _whole_ character,
4404 * exactly as if it were one space to the left.
4406 termline *ldata = lineptr(term->curs.y);
4407 our_curs_x = term->curs.x;
4408 if (our_curs_x > 0 &&
4409 ldata->chars[our_curs_x].chr == UCSWIDE)
4415 * If the cursor is not where it was last time we painted, and
4416 * its previous position is visible on screen, invalidate its
4417 * previous position.
4419 if (term->dispcursy >= 0 &&
4420 (term->curstype != cursor ||
4421 term->dispcursy != our_curs_y ||
4422 term->dispcursx != our_curs_x)) {
4423 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4426 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4427 dispcurs[-1].attr |= ATTR_INVALID;
4428 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4429 dispcurs[1].attr |= ATTR_INVALID;
4430 dispcurs->attr |= ATTR_INVALID;
4434 term->dispcursx = term->dispcursy = -1;
4436 #ifdef OPTIMISE_SCROLL
4438 sr = term->scrollhead;
4440 struct scrollregion *next = sr->next;
4441 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4445 term->scrollhead = term->scrolltail = NULL;
4446 #endif /* OPTIMISE_SCROLL */
4448 /* The normal screen data */
4449 for (i = 0; i < term->rows; i++) {
4452 int dirty_line, dirty_run, selected;
4453 unsigned long attr = 0, cset = 0;
4454 int updated_line = 0;
4457 int last_run_dirty = 0;
4459 scrpos.y = i + term->disptop;
4460 ldata = lineptr(scrpos.y);
4462 dirty_run = dirty_line = (ldata->lattr !=
4463 term->disptext[i]->lattr);
4464 term->disptext[i]->lattr = ldata->lattr;
4466 /* Do Arabic shaping and bidi. */
4467 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4469 if (!term_bidi_cache_hit(term, i, ldata->chars, term->cols)) {
4471 if (term->wcFromTo_size < term->cols) {
4472 term->wcFromTo_size = term->cols;
4473 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4475 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4479 for(it=0; it<term->cols ; it++)
4481 unsigned long uc = (ldata->chars[it].chr);
4483 switch (uc & CSET_MASK) {
4485 if (!term->cfg.rawcnp) {
4486 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4490 uc = term->ucsdata->unitab_line[uc & 0xFF];
4493 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4496 switch (uc & CSET_MASK) {
4498 uc = term->ucsdata->unitab_font[uc & 0xFF];
4501 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4505 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4507 term->wcFrom[it].index = it;
4511 do_bidi(term->wcFrom, term->cols);
4513 /* this is saved iff done from inside the shaping */
4514 if(!term->cfg.bidi && term->cfg.arabicshaping)
4515 for(it=0; it<term->cols; it++)
4516 term->wcTo[it] = term->wcFrom[it];
4518 if(!term->cfg.arabicshaping)
4519 do_shape(term->wcFrom, term->wcTo, term->cols);
4521 if (term->ltemp_size < ldata->size) {
4522 term->ltemp_size = ldata->size;
4523 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4527 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4529 for(it=0; it<term->cols ; it++)
4531 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4532 if (term->ltemp[it].cc_next)
4533 term->ltemp[it].cc_next -=
4534 it - term->wcTo[it].index;
4536 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4537 term->ltemp[it].chr = term->wcTo[it].wc;
4539 term_bidi_cache_store(term, i, ldata->chars,
4540 term->ltemp, ldata->size);
4542 lchars = term->ltemp;
4544 lchars = term->post_bidi_cache[i].chars;
4547 lchars = ldata->chars;
4549 for (j = 0; j < term->cols; j++) {
4550 unsigned long tattr, tchar;
4551 termchar *d = lchars + j;
4552 int break_run, do_copy;
4558 if (!term->cfg.ansi_colour)
4559 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4560 ATTR_DEFFG | ATTR_DEFBG;
4562 switch (tchar & CSET_MASK) {
4564 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4567 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4570 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4573 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4576 /* Video reversing things */
4577 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4578 if (term->seltype == LEXICOGRAPHIC)
4579 selected = (posle(term->selstart, scrpos) &&
4580 poslt(scrpos, term->selend));
4582 selected = (posPle(term->selstart, scrpos) &&
4583 posPlt(scrpos, term->selend));
4587 ^ (selected ? ATTR_REVERSE : 0));
4589 /* 'Real' blinking ? */
4590 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4591 if (term->has_focus && term->tblinker) {
4592 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4594 tattr &= ~ATTR_BLINK;
4598 * Check the font we'll _probably_ be using to see if
4599 * the character is wide when we don't want it to be.
4601 if (tchar != term->disptext[i]->chars[j].chr ||
4602 tattr != (term->disptext[i]->chars[j].attr &~
4604 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4605 tattr |= ATTR_NARROW;
4606 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4607 tattr |= ATTR_NARROW;
4609 /* Cursor here ? Save the 'background' */
4610 if (i == our_curs_y && j == our_curs_x) {
4612 cursor_background.chr = tchar;
4613 cursor_background.attr = tattr;
4614 /* For once, this cc_next field is an absolute index in lchars */
4616 cursor_background.cc_next = d->cc_next + j;
4618 cursor_background.cc_next = 0;
4619 term->dispcursx = j;
4620 term->dispcursy = i;
4623 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4626 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4628 /* Special hack for VT100 Linedraw glyphs */
4629 if (tchar >= 0x23BA && tchar <= 0x23BD)
4633 * Separate out sequences of characters that have the
4634 * same CSET, if that CSET is a magic one.
4636 if (CSET_OF(tchar) != cset)
4640 * Break on both sides of any combined-character cell.
4642 if (d->cc_next != 0 ||
4643 (j > 0 && d[-1].cc_next != 0))
4646 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4647 if (term->disptext[i]->chars[j].chr == tchar &&
4648 term->disptext[i]->chars[j].attr == tattr)
4650 else if (!dirty_run && ccount == 1)
4655 if ((dirty_run || last_run_dirty) && ccount > 0) {
4656 do_text(ctx, start, i, ch, ccount, attr, ldata->lattr);
4662 cset = CSET_OF(tchar);
4663 if (term->ucsdata->dbcs_screenfont)
4664 last_run_dirty = dirty_run;
4665 dirty_run = dirty_line;
4669 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4675 if (ccount >= chlen) {
4676 chlen = ccount + 256;
4677 ch = sresize(ch, chlen, wchar_t);
4679 ch[ccount++] = (wchar_t) tchar;
4684 while (dd->cc_next) {
4685 unsigned long schar;
4690 switch (schar & CSET_MASK) {
4692 schar = term->ucsdata->unitab_line[schar & 0xFF];
4695 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4698 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4702 if (ccount >= chlen) {
4703 chlen = ccount + 256;
4704 ch = sresize(ch, chlen, wchar_t);
4706 ch[ccount++] = (wchar_t) schar;
4709 attr |= TATTR_COMBINING;
4713 copy_termchar(term->disptext[i], j, d);
4714 term->disptext[i]->chars[j].chr = tchar;
4715 term->disptext[i]->chars[j].attr = tattr;
4718 /* If it's a wide char step along to the next one. */
4719 if (tattr & ATTR_WIDE) {
4720 if (++j < term->cols) {
4723 * By construction above, the cursor should not
4724 * be on the right-hand half of this character.
4727 assert(!(i == our_curs_y && j == our_curs_x));
4728 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4730 copy_termchar(term->disptext[i], j, d);
4734 if (dirty_run && ccount > 0) {
4735 do_text(ctx, start, i, ch, ccount, attr, ldata->lattr);
4739 /* Cursor on this line ? (and changed) */
4740 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
4741 ch[0] = (wchar_t) cursor_background.chr;
4742 attr = cursor_background.attr | cursor;
4745 if (cursor_background.cc_next) {
4746 termchar *dd = ldata->chars + cursor_background.cc_next;
4749 unsigned long schar;
4752 switch (schar & CSET_MASK) {
4754 schar = term->ucsdata->unitab_line[schar & 0xFF];
4757 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4760 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4764 if (ccount >= chlen) {
4765 chlen = ccount + 256;
4766 ch = sresize(ch, chlen, wchar_t);
4768 ch[ccount++] = (wchar_t) schar;
4776 attr |= TATTR_COMBINING;
4779 do_cursor(ctx, our_curs_x, i, ch, ccount, attr, ldata->lattr);
4780 term->curstype = cursor;
4790 * Invalidate the whole screen so it will be repainted in full.
4792 void term_invalidate(Terminal *term)
4796 for (i = 0; i < term->rows; i++)
4797 for (j = 0; j < term->cols; j++)
4798 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4802 * Paint the window in response to a WM_PAINT message.
4804 void term_paint(Terminal *term, Context ctx,
4805 int left, int top, int right, int bottom, int immediately)
4808 if (left < 0) left = 0;
4809 if (top < 0) top = 0;
4810 if (right >= term->cols) right = term->cols-1;
4811 if (bottom >= term->rows) bottom = term->rows-1;
4813 for (i = top; i <= bottom && i < term->rows; i++) {
4814 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
4815 for (j = left; j <= right && j < term->cols; j++)
4816 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4818 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
4819 term->disptext[i]->chars[j].attr = ATTR_INVALID;
4823 do_paint (term, ctx, FALSE);
4825 if (!term->window_update_pending) {
4826 term->window_update_pending = TRUE;
4827 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
4833 * Attempt to scroll the scrollback. The second parameter gives the
4834 * position we want to scroll to; the first is +1 to denote that
4835 * this position is relative to the beginning of the scrollback, -1
4836 * to denote it is relative to the end, and 0 to denote that it is
4837 * relative to the current position.
4839 void term_scroll(Terminal *term, int rel, int where)
4841 int sbtop = -sblines(term);
4842 #ifdef OPTIMISE_SCROLL
4843 int olddisptop = term->disptop;
4845 #endif /* OPTIMISE_SCROLL */
4847 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
4848 if (term->disptop < sbtop)
4849 term->disptop = sbtop;
4850 if (term->disptop > 0)
4853 #ifdef OPTIMISE_SCROLL
4854 shift = (term->disptop - olddisptop);
4855 if (shift < term->rows && shift > -term->rows)
4856 scroll_display(term, 0, term->rows - 1, shift);
4857 #endif /* OPTIMISE_SCROLL */
4861 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
4864 wchar_t *wbptr; /* where next char goes within workbuf */
4866 int wblen = 0; /* workbuf len */
4867 int buflen; /* amount of memory allocated to workbuf */
4869 buflen = 5120; /* Default size */
4870 workbuf = snewn(buflen, wchar_t);
4871 wbptr = workbuf; /* start filling here */
4872 old_top_x = top.x; /* needed for rect==1 */
4874 while (poslt(top, bottom)) {
4876 termline *ldata = lineptr(top.y);
4880 * nlpos will point at the maximum position on this line we
4881 * should copy up to. So we start it at the end of the
4885 nlpos.x = term->cols;
4888 * ... move it backwards if there's unused space at the end
4889 * of the line (and also set `nl' if this is the case,
4890 * because in normal selection mode this means we need a
4891 * newline at the end)...
4893 if (!(ldata->lattr & LATTR_WRAPPED)) {
4894 while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
4895 !ldata->chars[nlpos.x - 1].cc_next &&
4898 if (poslt(nlpos, bottom))
4900 } else if (ldata->lattr & LATTR_WRAPPED2) {
4901 /* Ignore the last char on the line in a WRAPPED2 line. */
4906 * ... and then clip it to the terminal x coordinate if
4907 * we're doing rectangular selection. (In this case we
4908 * still did the above, so that copying e.g. the right-hand
4909 * column from a table doesn't fill with spaces on the
4913 if (nlpos.x > bottom.x)
4915 nl = (top.y < bottom.y);
4918 while (poslt(top, bottom) && poslt(top, nlpos)) {
4921 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
4923 wchar_t cbuf[16], *p;
4927 if (ldata->chars[x].chr == UCSWIDE) {
4933 int uc = ldata->chars[x].chr;
4935 switch (uc & CSET_MASK) {
4937 if (!term->cfg.rawcnp) {
4938 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4942 uc = term->ucsdata->unitab_line[uc & 0xFF];
4945 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4948 switch (uc & CSET_MASK) {
4950 uc = term->ucsdata->unitab_font[uc & 0xFF];
4953 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4957 set = (uc & CSET_MASK);
4958 c = (uc & ~CSET_MASK);
4962 if (DIRECT_FONT(uc)) {
4963 if (c >= ' ' && c != 0x7F) {
4967 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
4969 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
4970 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
4974 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
4978 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
4985 for (p = cbuf; *p; p++) {
4986 /* Enough overhead for trailing NL and nul */
4987 if (wblen >= buflen - 16) {
4989 workbuf = sresize(workbuf, buflen, wchar_t);
4990 wbptr = workbuf + wblen;
4996 if (ldata->chars[x].cc_next)
4997 x += ldata->chars[x].cc_next;
5005 for (i = 0; i < sel_nl_sz; i++) {
5007 *wbptr++ = sel_nl[i];
5011 top.x = rect ? old_top_x : 0;
5015 #if SELECTION_NUL_TERMINATED
5019 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
5020 if (buflen > 0) /* indicates we allocated this buffer */
5024 void term_copyall(Terminal *term)
5028 tree234 *screen = term->screen;
5029 top.y = -sblines(term);
5031 bottom.y = find_last_nonempty_line(term, screen);
5032 bottom.x = term->cols;
5033 clipme(term, top, bottom, 0, TRUE);
5037 * The wordness array is mainly for deciding the disposition of the
5038 * US-ASCII characters.
5040 static int wordtype(Terminal *term, int uc)
5043 int start, end, ctype;
5045 static const struct ucsword ucs_words[] = {
5051 0x037e, 0x037e, 1}, /* Greek question mark */
5053 0x0387, 0x0387, 1}, /* Greek ano teleia */
5055 0x055a, 0x055f, 1}, /* Armenian punctuation */
5057 0x0589, 0x0589, 1}, /* Armenian full stop */
5059 0x0700, 0x070d, 1}, /* Syriac punctuation */
5061 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5063 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5065 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5067 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5069 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5071 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5073 0x2000, 0x200a, 0}, /* Various spaces */
5075 0x2070, 0x207f, 2}, /* superscript */
5077 0x2080, 0x208f, 2}, /* subscript */
5079 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5081 0x3000, 0x3000, 0}, /* ideographic space */
5083 0x3001, 0x3020, 1}, /* ideographic punctuation */
5085 0x303f, 0x309f, 3}, /* Hiragana */
5087 0x30a0, 0x30ff, 3}, /* Katakana */
5089 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5091 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5093 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5095 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5097 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5099 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5101 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5103 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5105 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5109 const struct ucsword *wptr;
5111 switch (uc & CSET_MASK) {
5113 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5116 uc = term->ucsdata->unitab_line[uc & 0xFF];
5119 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5122 switch (uc & CSET_MASK) {
5124 uc = term->ucsdata->unitab_font[uc & 0xFF];
5127 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5131 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5132 * fail as there's such a thing as a double width space. :-(
5134 if (term->ucsdata->dbcs_screenfont &&
5135 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5139 return term->wordness[uc];
5141 for (wptr = ucs_words; wptr->start; wptr++) {
5142 if (uc >= wptr->start && uc <= wptr->end)
5150 * Spread the selection outwards according to the selection mode.
5152 static pos sel_spread_half(Terminal *term, pos p, int dir)
5156 int topy = -sblines(term);
5158 ldata = lineptr(p.y);
5160 switch (term->selmode) {
5163 * In this mode, every character is a separate unit, except
5164 * for runs of spaces at the end of a non-wrapping line.
5166 if (!(ldata->lattr & LATTR_WRAPPED)) {
5167 termchar *q = ldata->chars + term->cols;
5168 while (q > ldata->chars &&
5169 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5171 if (q == ldata->chars + term->cols)
5173 if (p.x >= q - ldata->chars)
5174 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5179 * In this mode, the units are maximal runs of characters
5180 * whose `wordness' has the same value.
5182 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5185 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5186 term->cols-1 : term->cols);
5187 if (p.x < maxcols-1) {
5188 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5193 if (ldata->lattr & LATTR_WRAPPED) {
5195 ldata2 = lineptr(p.y+1);
5196 if (wordtype(term, UCSGET(ldata2->chars, 0))
5213 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5222 ldata2 = lineptr(p.y-1);
5223 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5224 term->cols-1 : term->cols);
5225 if (ldata2->lattr & LATTR_WRAPPED) {
5226 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5244 * In this mode, every line is a unit.
5246 p.x = (dir == -1 ? 0 : term->cols - 1);
5254 static void sel_spread(Terminal *term)
5256 if (term->seltype == LEXICOGRAPHIC) {
5257 term->selstart = sel_spread_half(term, term->selstart, -1);
5258 decpos(term->selend);
5259 term->selend = sel_spread_half(term, term->selend, +1);
5260 incpos(term->selend);
5264 void term_do_paste(Terminal *term)
5269 get_clip(term->frontend, &data, &len);
5270 if (data && len > 0) {
5273 term_seen_key_event(term); /* pasted data counts */
5275 if (term->paste_buffer)
5276 sfree(term->paste_buffer);
5277 term->paste_pos = term->paste_hold = term->paste_len = 0;
5278 term->paste_buffer = snewn(len, wchar_t);
5281 while (p < data + len) {
5282 while (p < data + len &&
5283 !(p <= data + len - sel_nl_sz &&
5284 !memcmp(p, sel_nl, sizeof(sel_nl))))
5289 for (i = 0; i < p - q; i++) {
5290 term->paste_buffer[term->paste_len++] = q[i];
5294 if (p <= data + len - sel_nl_sz &&
5295 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5296 term->paste_buffer[term->paste_len++] = '\015';
5302 /* Assume a small paste will be OK in one go. */
5303 if (term->paste_len < 256) {
5305 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5306 if (term->paste_buffer)
5307 sfree(term->paste_buffer);
5308 term->paste_buffer = 0;
5309 term->paste_pos = term->paste_hold = term->paste_len = 0;
5312 get_clip(term->frontend, NULL, NULL);
5315 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5316 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5320 int raw_mouse = (term->xterm_mouse &&
5321 !term->cfg.no_mouse_rep &&
5322 !(term->cfg.mouse_override && shift));
5323 int default_seltype;
5327 if (a == MA_DRAG && !raw_mouse)
5328 term_scroll(term, 0, -1);
5330 if (y >= term->rows) {
5332 if (a == MA_DRAG && !raw_mouse)
5333 term_scroll(term, 0, +1);
5342 if (x >= term->cols)
5345 selpoint.y = y + term->disptop;
5347 ldata = lineptr(selpoint.y);
5348 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5353 int encstate = 0, r, c;
5360 encstate = 0x20; /* left button down */
5371 case MBT_WHEEL_DOWN:
5374 default: break; /* placate gcc warning about enum use */
5378 if (term->xterm_mouse == 1)
5384 term->mouse_is_down = 0;
5387 if (term->mouse_is_down == braw)
5389 term->mouse_is_down = braw;
5391 default: break; /* placate gcc warning about enum use */
5400 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5401 ldisc_send(term->ldisc, abuf, 6, 0);
5407 * Set the selection type (rectangular or normal) at the start
5408 * of a selection attempt, from the state of Alt.
5410 if (!alt ^ !term->cfg.rect_select)
5411 default_seltype = RECTANGULAR;
5413 default_seltype = LEXICOGRAPHIC;
5415 if (term->selstate == NO_SELECTION) {
5416 term->seltype = default_seltype;
5419 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5421 term->selstate = ABOUT_TO;
5422 term->seltype = default_seltype;
5423 term->selanchor = selpoint;
5424 term->selmode = SM_CHAR;
5425 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5427 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5428 term->selstate = DRAGGING;
5429 term->selstart = term->selanchor = selpoint;
5430 term->selend = term->selstart;
5431 incpos(term->selend);
5433 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5434 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5435 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5437 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5438 term->selstate == SELECTED) {
5439 if (term->seltype == LEXICOGRAPHIC) {
5441 * For normal selection, we extend by moving
5442 * whichever end of the current selection is closer
5445 if (posdiff(selpoint, term->selstart) <
5446 posdiff(term->selend, term->selstart) / 2) {
5447 term->selanchor = term->selend;
5448 decpos(term->selanchor);
5450 term->selanchor = term->selstart;
5454 * For rectangular selection, we have a choice of
5455 * _four_ places to put selanchor and selpoint: the
5456 * four corners of the selection.
5458 if (2*selpoint.x < term->selstart.x + term->selend.x)
5459 term->selanchor.x = term->selend.x-1;
5461 term->selanchor.x = term->selstart.x;
5463 if (2*selpoint.y < term->selstart.y + term->selend.y)
5464 term->selanchor.y = term->selend.y;
5466 term->selanchor.y = term->selstart.y;
5468 term->selstate = DRAGGING;
5470 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5471 term->selanchor = selpoint;
5472 term->selstate = DRAGGING;
5473 if (term->seltype == LEXICOGRAPHIC) {
5475 * For normal selection, we set (selstart,selend) to
5476 * (selpoint,selanchor) in some order.
5478 if (poslt(selpoint, term->selanchor)) {
5479 term->selstart = selpoint;
5480 term->selend = term->selanchor;
5481 incpos(term->selend);
5483 term->selstart = term->selanchor;
5484 term->selend = selpoint;
5485 incpos(term->selend);
5489 * For rectangular selection, we may need to
5490 * interchange x and y coordinates (if the user has
5491 * dragged in the -x and +y directions, or vice versa).
5493 term->selstart.x = min(term->selanchor.x, selpoint.x);
5494 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5495 term->selstart.y = min(term->selanchor.y, selpoint.y);
5496 term->selend.y = max(term->selanchor.y, selpoint.y);
5499 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5501 if (term->selstate == DRAGGING) {
5503 * We've completed a selection. We now transfer the
5504 * data to the clipboard.
5506 clipme(term, term->selstart, term->selend,
5507 (term->seltype == RECTANGULAR), FALSE);
5508 term->selstate = SELECTED;
5510 term->selstate = NO_SELECTION;
5511 } else if (bcooked == MBT_PASTE
5513 #if MULTICLICK_ONLY_EVENT
5514 || a == MA_2CLK || a == MA_3CLK
5517 request_paste(term->frontend);
5523 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5524 unsigned int modifiers, unsigned int flags)
5528 int prependesc = FALSE;
5532 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5533 for (i = 0; i < tlen; i++)
5534 fprintf(stderr, " %04x", (unsigned)text[i]);
5535 fprintf(stderr, "\n");
5539 if ((flags & PKF_REPEAT) && term->repeat_off)
5542 /* Currently, Meta always just prefixes everything with ESC. */
5543 if (modifiers & PKM_META)
5545 modifiers &= ~PKM_META;
5548 * Alt is only used for Alt+keypad, which isn't supported yet, so
5551 modifiers &= ~PKM_ALT;
5553 /* Standard local function keys */
5554 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5556 if (keysym == PK_PAGEUP)
5557 /* scroll up one page */;
5558 if (keysym == PK_PAGEDOWN)
5559 /* scroll down on page */;
5560 if (keysym == PK_INSERT)
5561 term_do_paste(term);
5564 if (keysym == PK_PAGEUP)
5565 /* scroll up one line */;
5566 if (keysym == PK_PAGEDOWN)
5567 /* scroll down one line */;
5568 /* Control-Numlock for app-keypad mode switch */
5569 if (keysym == PK_PF1)
5570 term->app_keypad_keys ^= 1;
5574 if (modifiers & PKM_ALT) {
5575 /* Alt+F4 (close) */
5576 /* Alt+Return (full screen) */
5577 /* Alt+Space (system menu) */
5580 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5581 text[0] >= 0x20 && text[0] <= 0x7e) {
5582 /* ASCII chars + Control */
5583 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5584 (text[0] >= 0x61 && text[0] <= 0x7a))
5588 * Control-2 should return ^@ (0x00), Control-6 should return
5589 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5590 * the DOS keyboard handling did it, and we have nothing better
5591 * to do with the key combo in question, we'll also map
5592 * Control-Backquote to ^\ (0x1C).
5595 case ' ': text[0] = 0x00; break;
5596 case '-': text[0] = 0x1f; break;
5597 case '/': text[0] = 0x1f; break;
5598 case '2': text[0] = 0x00; break;
5599 case '3': text[0] = 0x1b; break;
5600 case '4': text[0] = 0x1c; break;
5601 case '5': text[0] = 0x1d; break;
5602 case '6': text[0] = 0x1e; break;
5603 case '7': text[0] = 0x1f; break;
5604 case '8': text[0] = 0x7f; break;
5605 case '`': text[0] = 0x1c; break;
5610 /* Nethack keypad */
5611 if (term->cfg.nethack_keypad) {
5614 case PK_KP1: c = 'b'; break;
5615 case PK_KP2: c = 'j'; break;
5616 case PK_KP3: c = 'n'; break;
5617 case PK_KP4: c = 'h'; break;
5618 case PK_KP5: c = '.'; break;
5619 case PK_KP6: c = 'l'; break;
5620 case PK_KP7: c = 'y'; break;
5621 case PK_KP8: c = 'k'; break;
5622 case PK_KP9: c = 'u'; break;
5623 default: break; /* else gcc warns `enum value not used' */
5627 if (modifiers & PKM_CONTROL)
5629 else if (modifiers & PKM_SHIFT)
5637 /* Numeric Keypad */
5638 if (PK_ISKEYPAD(keysym)) {
5642 * In VT400 mode, PFn always emits an escape sequence. In
5643 * Linux and tilde modes, this only happens in app keypad mode.
5645 if (term->cfg.funky_type == FUNKY_VT400 ||
5646 ((term->cfg.funky_type == FUNKY_LINUX ||
5647 term->cfg.funky_type == FUNKY_TILDE) &&
5648 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5650 case PK_PF1: xkey = 'P'; break;
5651 case PK_PF2: xkey = 'Q'; break;
5652 case PK_PF3: xkey = 'R'; break;
5653 case PK_PF4: xkey = 'S'; break;
5654 default: break; /* else gcc warns `enum value not used' */
5657 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5659 case PK_KP0: xkey = 'p'; break;
5660 case PK_KP1: xkey = 'q'; break;
5661 case PK_KP2: xkey = 'r'; break;
5662 case PK_KP3: xkey = 's'; break;
5663 case PK_KP4: xkey = 't'; break;
5664 case PK_KP5: xkey = 'u'; break;
5665 case PK_KP6: xkey = 'v'; break;
5666 case PK_KP7: xkey = 'w'; break;
5667 case PK_KP8: xkey = 'x'; break;
5668 case PK_KP9: xkey = 'y'; break;
5669 case PK_KPDECIMAL: xkey = 'n'; break;
5670 case PK_KPENTER: xkey = 'M'; break;
5671 default: break; /* else gcc warns `enum value not used' */
5673 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5675 * xterm can't see the layout of the keypad, so it has
5676 * to rely on the X keysyms returned by the keys.
5677 * Hence, we look at the strings here, not the PuTTY
5678 * keysyms (which describe the layout).
5682 if (modifiers & PKM_SHIFT)
5687 case '/': xkey = 'o'; break;
5688 case '*': xkey = 'j'; break;
5689 case '-': xkey = 'm'; break;
5693 * In all other modes, we try to retain the layout of
5694 * the DEC keypad in application mode.
5698 /* This key covers the '-' and ',' keys on a VT220 */
5699 if (modifiers & PKM_SHIFT)
5700 xkey = 'm'; /* VT220 '-' */
5702 xkey = 'l'; /* VT220 ',' */
5704 case PK_KPMINUS: xkey = 'm'; break;
5705 case PK_KPCOMMA: xkey = 'l'; break;
5706 default: break; /* else gcc warns `enum value not used' */
5711 if (term->vt52_mode) {
5712 if (xkey >= 'P' && xkey <= 'S')
5713 p += sprintf((char *) p, "\x1B%c", xkey);
5715 p += sprintf((char *) p, "\x1B?%c", xkey);
5717 p += sprintf((char *) p, "\x1BO%c", xkey);
5720 /* Not in application mode -- treat the number pad as arrow keys? */
5721 if ((flags & PKF_NUMLOCK) == 0) {
5723 case PK_KP0: keysym = PK_INSERT; break;
5724 case PK_KP1: keysym = PK_END; break;
5725 case PK_KP2: keysym = PK_DOWN; break;
5726 case PK_KP3: keysym = PK_PAGEDOWN; break;
5727 case PK_KP4: keysym = PK_LEFT; break;
5728 case PK_KP5: keysym = PK_REST; break;
5729 case PK_KP6: keysym = PK_RIGHT; break;
5730 case PK_KP7: keysym = PK_HOME; break;
5731 case PK_KP8: keysym = PK_UP; break;
5732 case PK_KP9: keysym = PK_PAGEUP; break;
5733 default: break; /* else gcc warns `enum value not used' */
5738 /* Miscellaneous keys */
5745 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5746 else if (modifiers == PKM_SHIFT)
5747 /* We do the opposite of what is configured */
5748 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5754 else if (modifiers == PKM_SHIFT)
5755 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5758 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5760 if (modifiers == PKM_CONTROL)
5765 case PK_KPENTER: /* Odd keypad modes handled above */
5766 if (modifiers == 0) {
5768 if (term->cr_lf_return)
5772 default: break; /* else gcc warns `enum value not used' */
5775 /* SCO function keys and editing keys */
5776 if (term->cfg.funky_type == FUNKY_SCO) {
5777 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
5778 static char const codes[] =
5779 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5780 int index = keysym - PK_F1;
5782 if (modifiers & PKM_SHIFT) index += 12;
5783 if (modifiers & PKM_CONTROL) index += 24;
5784 p += sprintf((char *) p, "\x1B[%c", codes[index]);
5787 if (PK_ISEDITING(keysym)) {
5791 case PK_DELETE: *p++ = 0x7f; goto done;
5792 case PK_HOME: xkey = 'H'; break;
5793 case PK_INSERT: xkey = 'L'; break;
5794 case PK_END: xkey = 'F'; break;
5795 case PK_PAGEUP: xkey = 'I'; break;
5796 case PK_PAGEDOWN: xkey = 'G'; break;
5797 default: break; /* else gcc warns `enum value not used' */
5799 p += sprintf((char *) p, "\x1B[%c", xkey);
5803 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
5806 if (term->cfg.funky_type == FUNKY_XTERM) {
5807 /* Xterm shuffles these keys, apparently. */
5809 case PK_HOME: keysym = PK_INSERT; break;
5810 case PK_INSERT: keysym = PK_HOME; break;
5811 case PK_DELETE: keysym = PK_END; break;
5812 case PK_END: keysym = PK_PAGEUP; break;
5813 case PK_PAGEUP: keysym = PK_DELETE; break;
5814 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
5815 default: break; /* else gcc warns `enum value not used' */
5820 if (term->cfg.rxvt_homeend &&
5821 (keysym == PK_HOME || keysym == PK_END)) {
5822 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
5826 if (term->vt52_mode) {
5830 * A real VT52 doesn't have these, and a VT220 doesn't
5831 * send anything for them in VT52 mode.
5834 case PK_HOME: xkey = 'H'; break;
5835 case PK_INSERT: xkey = 'L'; break;
5836 case PK_DELETE: xkey = 'M'; break;
5837 case PK_END: xkey = 'E'; break;
5838 case PK_PAGEUP: xkey = 'I'; break;
5839 case PK_PAGEDOWN: xkey = 'G'; break;
5840 default: xkey=0; break; /* else gcc warns `enum value not used'*/
5842 p += sprintf((char *) p, "\x1B%c", xkey);
5847 case PK_HOME: code = 1; break;
5848 case PK_INSERT: code = 2; break;
5849 case PK_DELETE: code = 3; break;
5850 case PK_END: code = 4; break;
5851 case PK_PAGEUP: code = 5; break;
5852 case PK_PAGEDOWN: code = 6; break;
5853 default: code = 0; break; /* else gcc warns `enum value not used' */
5855 p += sprintf((char *) p, "\x1B[%d~", code);
5859 if (PK_ISFKEY(keysym)) {
5860 /* Map Shift+F1-F10 to F11-F20 */
5861 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
5863 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
5865 /* XXX This overrides the XTERM/VT52 mode below */
5867 if (keysym >= PK_F6) offt++;
5868 if (keysym >= PK_F12) offt++;
5869 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
5870 'P' + keysym - PK_F1 - offt);
5873 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
5874 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
5877 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
5878 if (term->vt52_mode)
5879 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
5881 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
5884 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
5888 if (PK_ISCURSOR(keysym)) {
5892 case PK_UP: xkey = 'A'; break;
5893 case PK_DOWN: xkey = 'B'; break;
5894 case PK_RIGHT: xkey = 'C'; break;
5895 case PK_LEFT: xkey = 'D'; break;
5896 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
5897 default: xkey = 0; break; /* else gcc warns `enum value not used' */
5899 if (term->vt52_mode)
5900 p += sprintf((char *) p, "\x1B%c", xkey);
5902 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
5904 /* Useful mapping of Ctrl-arrows */
5905 if (modifiers == PKM_CONTROL)
5909 p += sprintf((char *) p, "\x1BO%c", xkey);
5911 p += sprintf((char *) p, "\x1B[%c", xkey);
5917 if (p > output || tlen > 0) {
5919 * Interrupt an ongoing paste. I'm not sure
5920 * this is sensible, but for the moment it's
5921 * preferable to having to faff about buffering
5927 * We need not bother about stdin backlogs
5928 * here, because in GUI PuTTY we can't do
5929 * anything about it anyway; there's no means
5930 * of asking Windows to hold off on KEYDOWN
5931 * messages. We _have_ to buffer everything
5934 term_seen_key_event(term);
5938 fprintf(stderr, "sending ESC\n");
5940 ldisc_send(term->ldisc, "\x1b", 1, 1);
5945 fprintf(stderr, "sending %d bytes:", p - output);
5946 for (i = 0; i < p - output; i++)
5947 fprintf(stderr, " %02x", output[i]);
5948 fprintf(stderr, "\n");
5950 ldisc_send(term->ldisc, output, p - output, 1);
5951 } else if (tlen > 0) {
5953 fprintf(stderr, "sending %d unichars:", tlen);
5954 for (i = 0; i < tlen; i++)
5955 fprintf(stderr, " %04x", (unsigned) text[i]);
5956 fprintf(stderr, "\n");
5958 luni_send(term->ldisc, text, tlen, 1);
5963 void term_nopaste(Terminal *term)
5965 if (term->paste_len == 0)
5967 sfree(term->paste_buffer);
5968 term->paste_buffer = NULL;
5969 term->paste_len = 0;
5972 int term_paste_pending(Terminal *term)
5974 return term->paste_len != 0;
5977 void term_paste(Terminal *term)
5979 long now, paste_diff;
5981 if (term->paste_len == 0)
5984 /* Don't wait forever to paste */
5985 if (term->paste_hold) {
5986 now = GETTICKCOUNT();
5987 paste_diff = now - term->last_paste;
5988 if (paste_diff >= 0 && paste_diff < 450)
5991 term->paste_hold = 0;
5993 while (term->paste_pos < term->paste_len) {
5995 while (n + term->paste_pos < term->paste_len) {
5996 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6000 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6001 term->paste_pos += n;
6003 if (term->paste_pos < term->paste_len) {
6004 term->paste_hold = 1;
6008 sfree(term->paste_buffer);
6009 term->paste_buffer = NULL;
6010 term->paste_len = 0;
6013 static void deselect(Terminal *term)
6015 term->selstate = NO_SELECTION;
6016 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6019 void term_deselect(Terminal *term)
6025 int term_ldisc(Terminal *term, int option)
6027 if (option == LD_ECHO)
6028 return term->term_echoing;
6029 if (option == LD_EDIT)
6030 return term->term_editing;
6034 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6036 bufchain_add(&term->inbuf, data, len);
6038 if (!term->in_term_out) {
6039 term->in_term_out = TRUE;
6040 term_reset_cblink(term);
6042 * During drag-selects, we do not process terminal input,
6043 * because the user will want the screen to hold still to
6046 if (term->selstate != DRAGGING)
6048 term->in_term_out = FALSE;
6052 * term_out() always completely empties inbuf. Therefore,
6053 * there's no reason at all to return anything other than zero
6054 * from this function, because there _can't_ be a question of
6055 * the remote side needing to wait until term_out() has cleared
6058 * This is a slightly suboptimal way to deal with SSH2 - in
6059 * principle, the window mechanism would allow us to continue
6060 * to accept data on forwarded ports and X connections even
6061 * while the terminal processing was going slowly - but we
6062 * can't do the 100% right thing without moving the terminal
6063 * processing into a separate thread, and that might hurt
6064 * portability. So we manage stdout buffering the old SSH1 way:
6065 * if the terminal processing goes slowly, the whole SSH
6066 * connection stops accepting data until it's ready.
6068 * In practice, I can't imagine this causing serious trouble.
6073 void term_provide_logctx(Terminal *term, void *logctx)
6075 term->logctx = logctx;