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 &~ DATTR_MASK) != (battr &~ DATTR_MASK))
276 while (a->cc_next || b->cc_next) {
277 if (!a->cc_next || !b->cc_next)
278 return FALSE; /* one cc-list ends, other does not */
281 if (a->chr != b->chr)
287 static int termchars_equal(termchar *a, termchar *b)
289 return termchars_equal_override(a, b, b->chr, b->attr);
293 * Copy a character cell. (Requires a pointer to the destination
294 * termline, so as to access its free list.)
296 static void copy_termchar(termline *destline, int x, termchar *src)
298 clear_cc(destline, x);
300 destline->chars[x] = *src; /* copy everything except cc-list */
301 destline->chars[x].cc_next = 0; /* and make sure this is zero */
303 while (src->cc_next) {
305 add_cc(destline, x, src->chr);
308 cc_check(destline); /* XXX-REMOVE-BEFORE-RELEASE */
312 * Move a character cell within its termline.
314 static void move_termchar(termline *line, termchar *dest, termchar *src)
316 /* First clear the cc list from the original char, just in case. */
317 clear_cc(line, dest - line->chars);
319 /* Move the character cell and adjust its cc_next. */
320 *dest = *src; /* copy everything except cc-list */
322 dest->cc_next = src->cc_next - (dest-src);
324 /* Ensure the original cell doesn't have a cc list. */
327 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
331 * Compress and decompress a termline into an RLE-based format for
332 * storing in scrollback. (Since scrollback almost never needs to
333 * be modified and exists in huge quantities, this is a sensible
334 * tradeoff, particularly since it allows us to continue adding
335 * features to the main termchar structure without proportionally
336 * bloating the terminal emulator's memory footprint unless those
337 * features are in constant use.)
343 static void add(struct buf *b, unsigned char c)
345 if (b->len >= b->size) {
346 b->size = (b->len * 3 / 2) + 512;
347 b->data = sresize(b->data, b->size, unsigned char);
349 b->data[b->len++] = c;
351 static int get(struct buf *b)
353 return b->data[b->len++];
355 static void makerle(struct buf *b, termline *ldata,
356 void (*makeliteral)(struct buf *b, termchar *c,
357 unsigned long *state))
359 int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2;
360 termchar *c = ldata->chars;
361 unsigned long state = 0, oldstate;
368 prevlen = prevpos = 0;
373 makeliteral(b, c++, &state);
374 thislen = b->len - thispos;
375 if (thislen == prevlen &&
376 !memcmp(b->data + prevpos, b->data + thispos, thislen)) {
378 * This literal precisely matches the previous one.
379 * Turn it into a run if it's worthwhile.
381 * With one-byte literals, it costs us two bytes to
382 * encode a run, plus another byte to write the header
383 * to resume normal output; so a three-element run is
384 * neutral, and anything beyond that is unconditionally
385 * worthwhile. With two-byte literals or more, even a
388 if (thislen > 1 || prev2) {
392 * It's worth encoding a run. Start at prevpos,
393 * unless hdrsize==0 in which case we can back up
394 * another one and start by overwriting hdrpos.
397 hdrsize--; /* remove the literal at prevpos */
401 prevpos -= prevlen;/* and possibly another one */
405 assert(prevpos == hdrpos + 1);
407 b->len = prevpos+prevlen;
409 memmove(b->data + prevpos+1, b->data + prevpos, prevlen);
411 b->len = prevpos+prevlen+1;
413 * Terminate the previous run of ordinary
416 assert(hdrsize >= 1 && hdrsize <= 128);
417 b->data[hdrpos] = hdrsize - 1;
420 runlen = prev2 ? 3 : 2;
422 while (n > 0 && runlen < 129) {
426 makeliteral(b, c, &state);
427 tmplen = b->len - tmppos;
429 if (tmplen != thislen ||
430 memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) {
432 break; /* run over */
437 assert(runlen >= 2 && runlen <= 129);
438 b->data[runpos] = runlen + 0x80 - 2;
443 /* And ensure this run doesn't interfere with the next. */
444 prevlen = prevpos = 0;
450 * Just flag that the previous two literals were
451 * identical, in case we find a third identical one
452 * we want to turn into a run.
465 * This character isn't (yet) part of a run. Add it to
469 if (hdrsize == 128) {
470 b->data[hdrpos] = hdrsize - 1;
474 prevlen = prevpos = 0;
483 assert(hdrsize <= 128);
484 b->data[hdrpos] = hdrsize - 1;
489 static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state)
492 * My encoding for characters is UTF-8-like, in that it stores
493 * 7-bit ASCII in one byte and uses high-bit-set bytes as
494 * introducers to indicate a longer sequence. However, it's
495 * unlike UTF-8 in that it doesn't need to be able to
496 * resynchronise, and therefore I don't want to waste two bits
497 * per byte on having recognisable continuation characters.
498 * Also I don't want to rule out the possibility that I may one
499 * day use values 0x80000000-0xFFFFFFFF for interesting
500 * purposes, so unlike UTF-8 I need a full 32-bit range.
501 * Accordingly, here is my encoding:
503 * 00000000-0000007F: 0xxxxxxx (but see below)
504 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
505 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
506 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
507 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
509 * (`Z' is like `x' but is always going to be zero since the
510 * values I'm encoding don't go above 2^32. In principle the
511 * five-byte form of the encoding could extend to 2^35, and
512 * there could be six-, seven-, eight- and nine-byte forms as
513 * well to allow up to 64-bit values to be encoded. But that's
514 * completely unnecessary for these purposes!)
516 * The encoding as written above would be very simple, except
517 * that 7-bit ASCII can occur in several different ways in the
518 * terminal data; sometimes it crops up in the D800 page
519 * (CSET_ASCII) but at other times it's in the 0000 page (real
520 * Unicode). Therefore, this encoding is actually _stateful_:
521 * the one-byte encoding of 00-7F actually indicates `reuse the
522 * upper three bytes of the last character', and to encode an
523 * absolute value of 00-7F you need to use the two-byte form
526 if ((c->chr & ~0x7F) == *state) {
527 add(b, (unsigned char)(c->chr & 0x7F));
528 } else if (c->chr < 0x4000) {
529 add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80));
530 add(b, (unsigned char)(c->chr & 0xFF));
531 } else if (c->chr < 0x200000) {
532 add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0));
533 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
534 add(b, (unsigned char)(c->chr & 0xFF));
535 } else if (c->chr < 0x10000000) {
536 add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0));
537 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
538 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
539 add(b, (unsigned char)(c->chr & 0xFF));
542 add(b, (unsigned char)((c->chr >> 24) & 0xFF));
543 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
544 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
545 add(b, (unsigned char)(c->chr & 0xFF));
547 *state = c->chr & ~0xFF;
549 static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state)
552 * My encoding for attributes is 16-bit-granular and assumes
553 * that the top bit of the word is never required. I either
554 * store a two-byte value with the top bit clear (indicating
555 * just that value), or a four-byte value with the top bit set
556 * (indicating the same value with its top bit clear).
558 * However, first I permute the bits of the attribute value, so
559 * that the eight bits of colour (four in each of fg and bg)
560 * which are never non-zero unless xterm 256-colour mode is in
561 * use are placed higher up the word than everything else. This
562 * ensures that attribute values remain 16-bit _unless_ the
563 * user uses extended colour.
565 unsigned attr, colourbits;
569 assert(ATTR_BGSHIFT > ATTR_FGSHIFT);
571 colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF;
573 colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF;
575 attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) |
576 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
577 attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) |
578 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
580 attr |= (colourbits << (32-9));
583 add(b, (unsigned char)((attr >> 8) & 0xFF));
584 add(b, (unsigned char)(attr & 0xFF));
586 add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80));
587 add(b, (unsigned char)((attr >> 16) & 0xFF));
588 add(b, (unsigned char)((attr >> 8) & 0xFF));
589 add(b, (unsigned char)(attr & 0xFF));
592 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
595 * For combining characters, I just encode a bunch of ordinary
596 * chars using makeliteral_chr, and terminate with a \0
597 * character (which I know won't come up as a combining char
600 * I don't use the stateful encoding in makeliteral_chr.
602 unsigned long zstate;
611 makeliteral_chr(b, c, &zstate);
616 makeliteral_chr(b, &z, &zstate);
619 static termline *decompressline(unsigned char *data, int *bytes_used);
621 static unsigned char *compressline(termline *ldata)
623 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
626 * First, store the column count, 7 bits at a time, least
627 * significant `digit' first, with the high bit set on all but
633 add(b, (unsigned char)((n & 0x7F) | 0x80));
636 add(b, (unsigned char)(n));
640 * Next store the lattrs; same principle.
643 int n = ldata->lattr;
645 add(b, (unsigned char)((n & 0x7F) | 0x80));
648 add(b, (unsigned char)(n));
652 * Now we store a sequence of separate run-length encoded
653 * fragments, each containing exactly as many symbols as there
654 * are columns in the ldata.
656 * All of these have a common basic format:
658 * - a byte 00-7F indicates that X+1 literals follow it
659 * - a byte 80-FF indicates that a single literal follows it
660 * and expects to be repeated (X-0x80)+2 times.
662 * The format of the `literals' varies between the fragments.
664 makerle(b, ldata, makeliteral_chr);
665 makerle(b, ldata, makeliteral_attr);
666 makerle(b, ldata, makeliteral_cc);
669 * Diagnostics: ensure that the compressed data really does
670 * decompress to the right thing.
672 * XXX-REMOVE-BEFORE-RELEASE: This is a bit performance-heavy
673 * to be leaving in production code.
675 #ifndef CHECK_SB_COMPRESSION
681 #ifdef DIAGNOSTIC_SB_COMPRESSION
682 for (i = 0; i < b->len; i++) {
683 printf(" %02x ", b->data[i]);
688 dcl = decompressline(b->data, &dused);
689 assert(b->len == dused);
690 assert(ldata->cols == dcl->cols);
691 assert(ldata->lattr == dcl->lattr);
692 for (i = 0; i < ldata->cols; i++)
693 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
695 #ifdef DIAGNOSTIC_SB_COMPRESSION
696 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
697 ldata->cols, 4 * ldata->cols, dused,
698 (double)dused / (4 * ldata->cols));
706 * Trim the allocated memory so we don't waste any, and return.
708 return sresize(b->data, b->len, unsigned char);
711 static void readrle(struct buf *b, termline *ldata,
712 void (*readliteral)(struct buf *b, termchar *c,
713 termline *ldata, unsigned long *state))
716 unsigned long state = 0;
718 while (n < ldata->cols) {
724 int pos = b->len, count = hdr + 2 - 0x80;
726 assert(n < ldata->cols);
728 readliteral(b, ldata->chars + n, ldata, &state);
732 /* Just a sequence of consecutive literals. */
736 assert(n < ldata->cols);
737 readliteral(b, ldata->chars + n, ldata, &state);
743 assert(n == ldata->cols);
745 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
746 unsigned long *state)
751 * 00000000-0000007F: 0xxxxxxx
752 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
753 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
754 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
755 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
760 c->chr = byte | *state;
761 } else if (byte < 0xC0) {
762 c->chr = (byte &~ 0xC0) << 8;
764 } else if (byte < 0xE0) {
765 c->chr = (byte &~ 0xE0) << 16;
766 c->chr |= get(b) << 8;
768 } else if (byte < 0xF0) {
769 c->chr = (byte &~ 0xF0) << 24;
770 c->chr |= get(b) << 16;
771 c->chr |= get(b) << 8;
774 assert(byte == 0xF0);
775 c->chr = get(b) << 24;
776 c->chr |= get(b) << 16;
777 c->chr |= get(b) << 8;
780 *state = c->chr & ~0xFF;
782 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
783 unsigned long *state)
785 unsigned val, attr, colourbits;
797 colourbits = (val >> (32-9)) & 0xFF;
798 attr = (val & ((1<<(32-9))-1));
800 attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) |
801 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
802 attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) |
803 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
805 attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4);
806 attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4);
810 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
811 unsigned long *state)
814 unsigned long zstate;
815 int x = c - ldata->chars;
821 readliteral_chr(b, &n, ldata, &zstate);
824 add_cc(ldata, x, n.chr);
828 static termline *decompressline(unsigned char *data, int *bytes_used)
830 int ncols, byte, shift;
831 struct buf buffer, *b = &buffer;
838 * First read in the column count.
843 ncols |= (byte & 0x7F) << shift;
845 } while (byte & 0x80);
848 * Now create the output termline.
850 ldata = snew(termline);
851 ldata->chars = snewn(ncols, termchar);
852 ldata->cols = ldata->size = ncols;
853 ldata->temporary = TRUE;
857 * We must set all the cc pointers in ldata->chars to 0 right
858 * now, so that cc diagnostics that verify the integrity of the
859 * whole line will make sense while we're in the middle of
864 for (i = 0; i < ldata->cols; i++)
865 ldata->chars[i].cc_next = 0;
869 * Now read in the lattr.
871 ldata->lattr = shift = 0;
874 ldata->lattr |= (byte & 0x7F) << shift;
876 } while (byte & 0x80);
879 * Now we read in each of the RLE streams in turn.
881 readrle(b, ldata, readliteral_chr);
882 readrle(b, ldata, readliteral_attr);
883 readrle(b, ldata, readliteral_cc);
885 /* Return the number of bytes read, for diagnostic purposes. */
887 *bytes_used = b->len;
893 * Resize a line to make it `cols' columns wide.
895 static void resizeline(Terminal *term, termline *line, int cols)
899 if (line->cols != cols) {
901 oldcols = line->cols;
904 * This line is the wrong length, which probably means it
905 * hasn't been accessed since a resize. Resize it now.
907 * First, go through all the characters that will be thrown
908 * out in the resize (if we're shrinking the line) and
909 * return their cc lists to the cc free list.
911 for (i = cols; i < oldcols; i++)
915 * If we're shrinking the line, we now bodily move the
916 * entire cc section from where it started to where it now
917 * needs to be. (We have to do this before the resize, so
918 * that the data we're copying is still there. However, if
919 * we're expanding, we have to wait until _after_ the
920 * resize so that the space we're copying into is there.)
923 memmove(line->chars + cols, line->chars + oldcols,
924 (line->size - line->cols) * TSIZE);
927 * Now do the actual resize, leaving the _same_ amount of
928 * cc space as there was to begin with.
930 line->size += cols - oldcols;
931 line->chars = sresize(line->chars, line->size, TTYPE);
935 * If we're expanding the line, _now_ we move the cc
939 memmove(line->chars + cols, line->chars + oldcols,
940 (line->size - line->cols) * TSIZE);
943 * Go through what's left of the original line, and adjust
944 * the first cc_next pointer in each list. (All the
945 * subsequent ones are still valid because they are
946 * relative offsets within the cc block.) Also do the same
947 * to the head of the cc_free list.
949 for (i = 0; i < oldcols && i < cols; i++)
950 if (line->chars[i].cc_next)
951 line->chars[i].cc_next += cols - oldcols;
953 line->cc_free += cols - oldcols;
956 * And finally fill in the new space with erase chars. (We
957 * don't have to worry about cc lists here, because we
958 * _know_ the erase char doesn't have one.)
960 for (i = oldcols; i < cols; i++)
961 line->chars[i] = term->basic_erase_char;
963 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
968 * Get the number of lines in the scrollback.
970 static int sblines(Terminal *term)
972 int sblines = count234(term->scrollback);
973 if (term->cfg.erase_to_scrollback &&
974 term->alt_which && term->alt_screen) {
975 sblines += term->alt_sblines;
981 * Retrieve a line of the screen or of the scrollback, according to
982 * whether the y coordinate is non-negative or negative
985 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
992 whichtree = term->screen;
999 if (term->cfg.erase_to_scrollback &&
1000 term->alt_which && term->alt_screen) {
1001 altlines = term->alt_sblines;
1003 if (y < -altlines) {
1004 whichtree = term->scrollback;
1005 treeindex = y + altlines + count234(term->scrollback);
1007 whichtree = term->alt_screen;
1008 treeindex = y + term->alt_sblines;
1009 /* treeindex = y + count234(term->alt_screen); */
1012 if (whichtree == term->scrollback) {
1013 unsigned char *cline = index234(whichtree, treeindex);
1014 line = decompressline(cline, NULL);
1016 line = index234(whichtree, treeindex);
1019 /* We assume that we don't screw up and retrieve something out of range. */
1020 assert(line != NULL);
1022 resizeline(term, line, term->cols);
1023 /* FIXME: should we sort the compressed scrollback out here? */
1028 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1029 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1031 static void term_schedule_tblink(Terminal *term);
1032 static void term_schedule_cblink(Terminal *term);
1034 static void term_timer(void *ctx, long now)
1036 Terminal *term = (Terminal *)ctx;
1039 if (term->tblink_pending && now - term->next_tblink >= 0) {
1040 term->tblinker = !term->tblinker;
1041 term->tblink_pending = FALSE;
1042 term_schedule_tblink(term);
1046 if (term->cblink_pending && now - term->next_cblink >= 0) {
1047 term->cblinker = !term->cblinker;
1048 term->cblink_pending = FALSE;
1049 term_schedule_cblink(term);
1053 if (term->in_vbell && now - term->vbell_end >= 0) {
1054 term->in_vbell = FALSE;
1059 (term->window_update_pending && now - term->next_update >= 0))
1063 static void term_schedule_update(Terminal *term)
1065 if (!term->window_update_pending) {
1066 term->window_update_pending = TRUE;
1067 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1072 * Call this whenever the terminal window state changes, to queue
1075 static void seen_disp_event(Terminal *term)
1077 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1078 term_schedule_update(term);
1082 * Call when the terminal's blinking-text settings change, or when
1083 * a text blink has just occurred.
1085 static void term_schedule_tblink(Terminal *term)
1087 if (term->blink_is_real) {
1088 if (!term->tblink_pending)
1089 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1090 term->tblink_pending = TRUE;
1092 term->tblinker = 1; /* reset when not in use */
1093 term->tblink_pending = FALSE;
1098 * Likewise with cursor blinks.
1100 static void term_schedule_cblink(Terminal *term)
1102 if (term->cfg.blink_cur && term->has_focus) {
1103 if (!term->cblink_pending)
1104 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1105 term->cblink_pending = TRUE;
1107 term->cblinker = 1; /* reset when not in use */
1108 term->cblink_pending = FALSE;
1113 * Call to reset cursor blinking on new output.
1115 static void term_reset_cblink(Terminal *term)
1117 seen_disp_event(term);
1119 term->cblink_pending = FALSE;
1120 term_schedule_cblink(term);
1124 * Call to begin a visual bell.
1126 static void term_schedule_vbell(Terminal *term, int already_started,
1129 long ticks_already_gone;
1131 if (already_started)
1132 ticks_already_gone = GETTICKCOUNT() - startpoint;
1134 ticks_already_gone = 0;
1136 if (ticks_already_gone < VBELL_DELAY) {
1137 term->in_vbell = TRUE;
1138 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1141 term->in_vbell = FALSE;
1146 * Set up power-on settings for the terminal.
1148 static void power_on(Terminal *term)
1150 term->curs.x = term->curs.y = 0;
1151 term->alt_x = term->alt_y = 0;
1152 term->savecurs.x = term->savecurs.y = 0;
1153 term->alt_t = term->marg_t = 0;
1154 if (term->rows != -1)
1155 term->alt_b = term->marg_b = term->rows - 1;
1157 term->alt_b = term->marg_b = 0;
1158 if (term->cols != -1) {
1160 for (i = 0; i < term->cols; i++)
1161 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1163 term->alt_om = term->dec_om = term->cfg.dec_om;
1164 term->alt_ins = term->insert = FALSE;
1165 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
1166 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1167 term->alt_cset = term->cset = term->save_cset = 0;
1168 term->alt_utf = term->utf = term->save_utf = 0;
1169 term->utf_state = 0;
1170 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
1171 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII;
1173 term->in_vbell = FALSE;
1174 term->cursor_on = 1;
1175 term->big_cursor = 0;
1176 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
1177 term->term_editing = term->term_echoing = FALSE;
1178 term->app_cursor_keys = term->cfg.app_cursor;
1179 term->app_keypad_keys = term->cfg.app_keypad;
1180 term->use_bce = term->cfg.bce;
1181 term->blink_is_real = term->cfg.blinktext;
1182 term->erase_char = term->basic_erase_char;
1183 term->alt_which = 0;
1184 term_print_finish(term);
1187 for (i = 0; i < 256; i++)
1188 term->wordness[i] = term->cfg.wordness[i];
1191 swap_screen(term, 1, FALSE, FALSE);
1192 erase_lots(term, FALSE, TRUE, TRUE);
1193 swap_screen(term, 0, FALSE, FALSE);
1194 erase_lots(term, FALSE, TRUE, TRUE);
1196 term_schedule_tblink(term);
1197 term_schedule_cblink(term);
1201 * Force a screen update.
1203 void term_update(Terminal *term)
1207 term->window_update_pending = FALSE;
1209 ctx = get_ctx(term->frontend);
1211 int need_sbar_update = term->seen_disp_event;
1212 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1213 term->disptop = 0; /* return to main screen */
1214 term->seen_disp_event = 0;
1215 need_sbar_update = TRUE;
1218 if (need_sbar_update)
1220 do_paint(term, ctx, TRUE);
1221 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1227 * Called from front end when a keypress occurs, to trigger
1228 * anything magical that needs to happen in that situation.
1230 void term_seen_key_event(Terminal *term)
1233 * On any keypress, clear the bell overload mechanism
1234 * completely, on the grounds that large numbers of
1235 * beeps coming from deliberate key action are likely
1236 * to be intended (e.g. beeps from filename completion
1237 * blocking repeatedly).
1239 term->beep_overloaded = FALSE;
1240 while (term->beephead) {
1241 struct beeptime *tmp = term->beephead;
1242 term->beephead = tmp->next;
1245 term->beeptail = NULL;
1249 * Reset the scrollback on keypress, if we're doing that.
1251 if (term->cfg.scroll_on_key) {
1252 term->disptop = 0; /* return to main screen */
1253 seen_disp_event(term);
1258 * Same as power_on(), but an external function.
1260 void term_pwron(Terminal *term)
1263 if (term->ldisc) /* cause ldisc to notice changes */
1264 ldisc_send(term->ldisc, NULL, 0, 0);
1270 static void set_erase_char(Terminal *term)
1272 term->erase_char = term->basic_erase_char;
1274 term->erase_char.attr = (term->curr_attr &
1275 (ATTR_FGMASK | ATTR_BGMASK));
1279 * When the user reconfigures us, we need to check the forbidden-
1280 * alternate-screen config option, disable raw mouse mode if the
1281 * user has disabled mouse reporting, and abandon a print job if
1282 * the user has disabled printing.
1284 void term_reconfig(Terminal *term, Config *cfg)
1287 * Before adopting the new config, check all those terminal
1288 * settings which control power-on defaults; and if they've
1289 * changed, we will modify the current state as well as the
1290 * default one. The full list is: Auto wrap mode, DEC Origin
1291 * Mode, BCE, blinking text, character classes.
1293 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1296 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1297 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1298 reset_bce = (term->cfg.bce != cfg->bce);
1299 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1300 reset_charclass = 0;
1301 for (i = 0; i < lenof(term->cfg.wordness); i++)
1302 if (term->cfg.wordness[i] != cfg->wordness[i])
1303 reset_charclass = 1;
1306 * If the bidi or shaping settings have changed, flush the bidi
1309 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1310 term->cfg.bidi != cfg->bidi) {
1311 for (i = 0; i < term->bidi_cache_size; i++) {
1312 sfree(term->pre_bidi_cache[i].chars);
1313 sfree(term->post_bidi_cache[i].chars);
1314 term->pre_bidi_cache[i].width = -1;
1315 term->pre_bidi_cache[i].chars = NULL;
1316 term->post_bidi_cache[i].width = -1;
1317 term->post_bidi_cache[i].chars = NULL;
1321 term->cfg = *cfg; /* STRUCTURE COPY */
1324 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1326 term->alt_om = term->dec_om = term->cfg.dec_om;
1328 term->use_bce = term->cfg.bce;
1329 set_erase_char(term);
1332 term->blink_is_real = term->cfg.blinktext;
1334 if (reset_charclass)
1335 for (i = 0; i < 256; i++)
1336 term->wordness[i] = term->cfg.wordness[i];
1338 if (term->cfg.no_alt_screen)
1339 swap_screen(term, 0, FALSE, FALSE);
1340 if (term->cfg.no_mouse_rep) {
1341 term->xterm_mouse = 0;
1342 set_raw_mouse_mode(term->frontend, 0);
1344 if (term->cfg.no_remote_charset) {
1345 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1346 term->sco_acs = term->alt_sco_acs = 0;
1349 if (!*term->cfg.printer) {
1350 term_print_finish(term);
1352 term_schedule_tblink(term);
1353 term_schedule_cblink(term);
1357 * Clear the scrollback.
1359 void term_clrsb(Terminal *term)
1363 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1364 sfree(line); /* this is compressed data, not a termline */
1366 term->tempsblines = 0;
1367 term->alt_sblines = 0;
1372 * Initialise the terminal.
1374 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1380 * Allocate a new Terminal structure and initialise the fields
1383 term = snew(Terminal);
1384 term->frontend = frontend;
1385 term->ucsdata = ucsdata;
1386 term->cfg = *mycfg; /* STRUCTURE COPY */
1387 term->logctx = NULL;
1388 term->compatibility_level = TM_PUTTY;
1389 strcpy(term->id_string, "\033[?6c");
1390 term->cblink_pending = term->tblink_pending = FALSE;
1391 term->paste_buffer = NULL;
1392 term->paste_len = 0;
1393 term->last_paste = 0;
1394 bufchain_init(&term->inbuf);
1395 bufchain_init(&term->printer_buf);
1396 term->printing = term->only_printing = FALSE;
1397 term->print_job = NULL;
1398 term->vt52_mode = FALSE;
1399 term->cr_lf_return = FALSE;
1400 term->seen_disp_event = FALSE;
1401 term->xterm_mouse = term->mouse_is_down = FALSE;
1402 term->reset_132 = FALSE;
1403 term->cblinker = term->tblinker = 0;
1404 term->has_focus = 1;
1405 term->repeat_off = FALSE;
1406 term->termstate = TOPLEVEL;
1407 term->selstate = NO_SELECTION;
1410 term->screen = term->alt_screen = term->scrollback = NULL;
1411 term->tempsblines = 0;
1412 term->alt_sblines = 0;
1414 term->disptext = NULL;
1415 term->dispcursx = term->dispcursy = -1;
1418 term->rows = term->cols = -1;
1420 term->beephead = term->beeptail = NULL;
1421 #ifdef OPTIMISE_SCROLL
1422 term->scrollhead = term->scrolltail = NULL;
1423 #endif /* OPTIMISE_SCROLL */
1425 term->lastbeep = FALSE;
1426 term->beep_overloaded = FALSE;
1427 term->attr_mask = 0xffffffff;
1428 term->resize_fn = NULL;
1429 term->resize_ctx = NULL;
1430 term->in_term_out = FALSE;
1432 term->ltemp_size = 0;
1433 term->wcFrom = NULL;
1435 term->wcFromTo_size = 0;
1437 term->window_update_pending = FALSE;
1439 term->bidi_cache_size = 0;
1440 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1443 term->basic_erase_char.chr = CSET_ASCII | ' ';
1444 term->basic_erase_char.attr = ATTR_DEFAULT;
1445 term->basic_erase_char.cc_next = 0;
1446 term->erase_char = term->basic_erase_char;
1451 void term_free(Terminal *term)
1454 struct beeptime *beep;
1457 while ((line = delpos234(term->scrollback, 0)) != NULL)
1458 sfree(line); /* compressed data, not a termline */
1459 freetree234(term->scrollback);
1460 while ((line = delpos234(term->screen, 0)) != NULL)
1462 freetree234(term->screen);
1463 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1465 freetree234(term->alt_screen);
1466 if (term->disptext) {
1467 for (i = 0; i < term->rows; i++)
1468 freeline(term->disptext[i]);
1470 sfree(term->disptext);
1471 while (term->beephead) {
1472 beep = term->beephead;
1473 term->beephead = beep->next;
1476 bufchain_clear(&term->inbuf);
1478 printer_finish_job(term->print_job);
1479 bufchain_clear(&term->printer_buf);
1480 sfree(term->paste_buffer);
1482 sfree(term->wcFrom);
1485 for (i = 0; i < term->bidi_cache_size; i++) {
1486 sfree(term->pre_bidi_cache[i].chars);
1487 sfree(term->post_bidi_cache[i].chars);
1489 sfree(term->pre_bidi_cache);
1490 sfree(term->post_bidi_cache);
1492 expire_timer_context(term);
1498 * Set up the terminal for a given size.
1500 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1503 termline **newdisp, *line;
1504 int i, j, oldrows = term->rows;
1506 int save_alt_which = term->alt_which;
1508 if (newrows == term->rows && newcols == term->cols &&
1509 newsavelines == term->savelines)
1510 return; /* nothing to do */
1513 swap_screen(term, 0, FALSE, FALSE);
1515 term->alt_t = term->marg_t = 0;
1516 term->alt_b = term->marg_b = newrows - 1;
1518 if (term->rows == -1) {
1519 term->scrollback = newtree234(NULL);
1520 term->screen = newtree234(NULL);
1521 term->tempsblines = 0;
1526 * Resize the screen and scrollback. We only need to shift
1527 * lines around within our data structures, because lineptr()
1528 * will take care of resizing each individual line if
1531 * - If the new screen is longer, we shunt lines in from temporary
1532 * scrollback if possible, otherwise we add new blank lines at
1535 * - If the new screen is shorter, we remove any blank lines at
1536 * the bottom if possible, otherwise shunt lines above the cursor
1537 * to scrollback if possible, otherwise delete lines below the
1540 * - Then, if the new scrollback length is less than the
1541 * amount of scrollback we actually have, we must throw some
1544 sblen = count234(term->scrollback);
1545 /* Do this loop to expand the screen if newrows > rows */
1546 assert(term->rows == count234(term->screen));
1547 while (term->rows < newrows) {
1548 if (term->tempsblines > 0) {
1549 unsigned char *cline;
1550 /* Insert a line from the scrollback at the top of the screen. */
1551 assert(sblen >= term->tempsblines);
1552 cline = delpos234(term->scrollback, --sblen);
1553 line = decompressline(cline, NULL);
1555 line->temporary = FALSE; /* reconstituted line is now real */
1556 term->tempsblines -= 1;
1557 addpos234(term->screen, line, 0);
1559 term->savecurs.y += 1;
1561 /* Add a new blank line at the bottom of the screen. */
1562 line = newline(term, newcols, FALSE);
1563 addpos234(term->screen, line, count234(term->screen));
1567 /* Do this loop to shrink the screen if newrows < rows */
1568 while (term->rows > newrows) {
1569 if (term->curs.y < term->rows - 1) {
1570 /* delete bottom row, unless it contains the cursor */
1571 sfree(delpos234(term->screen, term->rows - 1));
1573 /* push top row to scrollback */
1574 line = delpos234(term->screen, 0);
1575 addpos234(term->scrollback, compressline(line), sblen++);
1577 term->tempsblines += 1;
1579 term->savecurs.y -= 1;
1583 assert(term->rows == newrows);
1584 assert(count234(term->screen) == newrows);
1586 /* Delete any excess lines from the scrollback. */
1587 while (sblen > newsavelines) {
1588 line = delpos234(term->scrollback, 0);
1592 if (sblen < term->tempsblines)
1593 term->tempsblines = sblen;
1594 assert(count234(term->scrollback) <= newsavelines);
1595 assert(count234(term->scrollback) >= term->tempsblines);
1598 /* Make a new displayed text buffer. */
1599 newdisp = snewn(newrows, termline *);
1600 for (i = 0; i < newrows; i++) {
1601 newdisp[i] = newline(term, newcols, FALSE);
1602 for (j = 0; j < newcols; j++)
1603 newdisp[i]->chars[j].attr = ATTR_INVALID;
1605 if (term->disptext) {
1606 for (i = 0; i < oldrows; i++)
1607 freeline(term->disptext[i]);
1609 sfree(term->disptext);
1610 term->disptext = newdisp;
1611 term->dispcursx = term->dispcursy = -1;
1613 /* Make a new alternate screen. */
1614 newalt = newtree234(NULL);
1615 for (i = 0; i < newrows; i++) {
1616 line = newline(term, newcols, TRUE);
1617 addpos234(newalt, line, i);
1619 if (term->alt_screen) {
1620 while (NULL != (line = delpos234(term->alt_screen, 0)))
1622 freetree234(term->alt_screen);
1624 term->alt_screen = newalt;
1625 term->alt_sblines = 0;
1627 term->tabs = sresize(term->tabs, newcols, unsigned char);
1630 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1631 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1634 /* Check that the cursor positions are still valid. */
1635 if (term->savecurs.y < 0)
1636 term->savecurs.y = 0;
1637 if (term->savecurs.y >= newrows)
1638 term->savecurs.y = newrows - 1;
1639 if (term->curs.y < 0)
1641 if (term->curs.y >= newrows)
1642 term->curs.y = newrows - 1;
1643 if (term->curs.x >= newcols)
1644 term->curs.x = newcols - 1;
1645 term->alt_x = term->alt_y = 0;
1646 term->wrapnext = term->alt_wnext = FALSE;
1648 term->rows = newrows;
1649 term->cols = newcols;
1650 term->savelines = newsavelines;
1652 swap_screen(term, save_alt_which, FALSE, FALSE);
1656 if (term->resize_fn)
1657 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1661 * Hand a function and context pointer to the terminal which it can
1662 * use to notify a back end of resizes.
1664 void term_provide_resize_fn(Terminal *term,
1665 void (*resize_fn)(void *, int, int),
1668 term->resize_fn = resize_fn;
1669 term->resize_ctx = resize_ctx;
1670 if (term->cols > 0 && term->rows > 0)
1671 resize_fn(resize_ctx, term->cols, term->rows);
1674 /* Find the bottom line on the screen that has any content.
1675 * If only the top line has content, returns 0.
1676 * If no lines have content, return -1.
1678 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1681 for (i = count234(screen) - 1; i >= 0; i--) {
1682 termline *line = index234(screen, i);
1684 for (j = 0; j < line->cols; j++)
1685 if (!termchars_equal(&line->chars[j], &term->erase_char))
1687 if (j != line->cols) break;
1693 * Swap screens. If `reset' is TRUE and we have been asked to
1694 * switch to the alternate screen, we must bring most of its
1695 * configuration from the main screen and erase the contents of the
1696 * alternate screen completely. (This is even true if we're already
1697 * on it! Blame xterm.)
1699 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1705 reset = FALSE; /* do no weird resetting if which==0 */
1707 if (which != term->alt_which) {
1708 term->alt_which = which;
1710 ttr = term->alt_screen;
1711 term->alt_screen = term->screen;
1713 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1715 if (!reset && !keep_cur_pos)
1716 term->curs.x = term->alt_x;
1719 if (!reset && !keep_cur_pos)
1720 term->curs.y = term->alt_y;
1723 if (!reset) term->marg_t = term->alt_t;
1726 if (!reset) term->marg_b = term->alt_b;
1729 if (!reset) term->dec_om = term->alt_om;
1732 if (!reset) term->wrap = term->alt_wrap;
1735 if (!reset) term->wrapnext = term->alt_wnext;
1736 term->alt_wnext = t;
1738 if (!reset) term->insert = term->alt_ins;
1741 if (!reset) term->cset = term->alt_cset;
1744 if (!reset) term->utf = term->alt_utf;
1747 if (!reset) term->sco_acs = term->alt_sco_acs;
1748 term->alt_sco_acs = t;
1751 if (reset && term->screen) {
1753 * Yes, this _is_ supposed to honour background-colour-erase.
1755 erase_lots(term, FALSE, TRUE, TRUE);
1760 * Update the scroll bar.
1762 static void update_sbar(Terminal *term)
1764 int nscroll = sblines(term);
1765 set_sbar(term->frontend, nscroll + term->rows,
1766 nscroll + term->disptop, term->rows);
1770 * Check whether the region bounded by the two pointers intersects
1771 * the scroll region, and de-select the on-screen selection if so.
1773 static void check_selection(Terminal *term, pos from, pos to)
1775 if (poslt(from, term->selend) && poslt(term->selstart, to))
1780 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1781 * for backward.) `sb' is TRUE if the scrolling is permitted to
1782 * affect the scrollback buffer.
1784 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1787 int i, seltop, olddisptop, shift;
1789 if (topline != 0 || term->alt_which != 0)
1792 olddisptop = term->disptop;
1796 line = delpos234(term->screen, botline);
1797 resizeline(term, line, term->cols);
1798 for (i = 0; i < term->cols; i++)
1799 copy_termchar(line, i, &term->erase_char);
1800 line->lattr = LATTR_NORM;
1801 addpos234(term->screen, line, topline);
1803 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1805 if (term->selstart.y > botline) {
1806 term->selstart.y = botline + 1;
1807 term->selstart.x = 0;
1810 if (term->selend.y >= topline && term->selend.y <= botline) {
1812 if (term->selend.y > botline) {
1813 term->selend.y = botline + 1;
1822 line = delpos234(term->screen, topline);
1823 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
1824 if (sb && term->savelines > 0) {
1825 int sblen = count234(term->scrollback);
1827 * We must add this line to the scrollback. We'll
1828 * remove a line from the top of the scrollback if
1829 * the scrollback is full.
1831 if (sblen == term->savelines) {
1832 unsigned char *cline;
1835 cline = delpos234(term->scrollback, 0);
1838 term->tempsblines += 1;
1840 addpos234(term->scrollback, compressline(line), sblen);
1842 /* now `line' itself can be reused as the bottom line */
1845 * If the user is currently looking at part of the
1846 * scrollback, and they haven't enabled any options
1847 * that are going to reset the scrollback as a
1848 * result of this movement, then the chances are
1849 * they'd like to keep looking at the same line. So
1850 * we move their viewpoint at the same rate as the
1851 * scroll, at least until their viewpoint hits the
1852 * top end of the scrollback buffer, at which point
1853 * we don't have the choice any more.
1855 * Thanks to Jan Holmen Holsten for the idea and
1856 * initial implementation.
1858 if (term->disptop > -term->savelines && term->disptop < 0)
1861 resizeline(term, line, term->cols);
1862 for (i = 0; i < term->cols; i++)
1863 copy_termchar(line, i, &term->erase_char);
1864 line->lattr = LATTR_NORM;
1865 addpos234(term->screen, line, botline);
1868 * If the selection endpoints move into the scrollback,
1869 * we keep them moving until they hit the top. However,
1870 * of course, if the line _hasn't_ moved into the
1871 * scrollback then we don't do this, and cut them off
1872 * at the top of the scroll region.
1874 * This applies to selstart and selend (for an existing
1875 * selection), and also selanchor (for one being
1876 * selected as we speak).
1878 seltop = sb ? -term->savelines : topline;
1880 if (term->selstate != NO_SELECTION) {
1881 if (term->selstart.y >= seltop &&
1882 term->selstart.y <= botline) {
1884 if (term->selstart.y < seltop) {
1885 term->selstart.y = seltop;
1886 term->selstart.x = 0;
1889 if (term->selend.y >= seltop && term->selend.y <= botline) {
1891 if (term->selend.y < seltop) {
1892 term->selend.y = seltop;
1896 if (term->selanchor.y >= seltop &&
1897 term->selanchor.y <= botline) {
1898 term->selanchor.y--;
1899 if (term->selanchor.y < seltop) {
1900 term->selanchor.y = seltop;
1901 term->selanchor.x = 0;
1909 #ifdef OPTIMISE_SCROLL
1910 shift += term->disptop - olddisptop;
1911 if (shift < term->rows && shift > -term->rows && shift != 0)
1912 scroll_display(term, topline, botline, shift);
1913 #endif /* OPTIMISE_SCROLL */
1916 #ifdef OPTIMISE_SCROLL
1918 * Add a scroll of a region on the screen into the pending scroll list.
1919 * `lines' is +ve for scrolling forward, -ve for backward.
1921 * If the scroll is on the same area as the last scroll in the list,
1924 static void save_scroll(Terminal *term, int topline, int botline, int lines)
1926 struct scrollregion *newscroll;
1927 if (term->scrolltail &&
1928 term->scrolltail->topline == topline &&
1929 term->scrolltail->botline == botline) {
1930 term->scrolltail->lines += lines;
1932 newscroll = snew(struct scrollregion);
1933 newscroll->topline = topline;
1934 newscroll->botline = botline;
1935 newscroll->lines = lines;
1936 newscroll->next = NULL;
1938 if (!term->scrollhead)
1939 term->scrollhead = newscroll;
1941 term->scrolltail->next = newscroll;
1942 term->scrolltail = newscroll;
1947 * Scroll the physical display, and our conception of it in disptext.
1949 static void scroll_display(Terminal *term, int topline, int botline, int lines)
1951 int distance, nlines, i, j;
1953 distance = lines > 0 ? lines : -lines;
1954 nlines = botline - topline + 1 - distance;
1956 for (i = 0; i < nlines; i++)
1957 for (j = 0; j < term->cols; j++)
1958 copy_termchar(term->disptext[i], j,
1959 term->disptext[i+distance]->chars+j);
1960 if (term->dispcursy >= 0 &&
1961 term->dispcursy >= topline + distance &&
1962 term->dispcursy < topline + distance + nlines)
1963 term->dispcursy -= distance;
1964 for (i = 0; i < distance; i++)
1965 for (j = 0; j < term->cols; j++)
1966 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
1968 for (i = nlines; i-- ;)
1969 for (j = 0; j < term->cols; j++)
1970 copy_termchar(term->disptext[i+distance], j,
1971 term->disptext[i]->chars+j);
1972 if (term->dispcursy >= 0 &&
1973 term->dispcursy >= topline &&
1974 term->dispcursy < topline + nlines)
1975 term->dispcursy += distance;
1976 for (i = 0; i < distance; i++)
1977 for (j = 0; j < term->cols; j++)
1978 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
1980 save_scroll(term, topline, botline, lines);
1982 #endif /* OPTIMISE_SCROLL */
1985 * Move the cursor to a given position, clipping at boundaries. We
1986 * may or may not want to clip at the scroll margin: marg_clip is 0
1987 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
1988 * even _being_ outside the margins.
1990 static void move(Terminal *term, int x, int y, int marg_clip)
1994 if (x >= term->cols)
1997 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2000 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2006 if (y >= term->rows)
2010 term->wrapnext = FALSE;
2014 * Save or restore the cursor and SGR mode.
2016 static void save_cursor(Terminal *term, int save)
2019 term->savecurs = term->curs;
2020 term->save_attr = term->curr_attr;
2021 term->save_cset = term->cset;
2022 term->save_utf = term->utf;
2023 term->save_wnext = term->wrapnext;
2024 term->save_csattr = term->cset_attr[term->cset];
2025 term->save_sco_acs = term->sco_acs;
2027 term->curs = term->savecurs;
2028 /* Make sure the window hasn't shrunk since the save */
2029 if (term->curs.x >= term->cols)
2030 term->curs.x = term->cols - 1;
2031 if (term->curs.y >= term->rows)
2032 term->curs.y = term->rows - 1;
2034 term->curr_attr = term->save_attr;
2035 term->cset = term->save_cset;
2036 term->utf = term->save_utf;
2037 term->wrapnext = term->save_wnext;
2039 * wrapnext might reset to False if the x position is no
2040 * longer at the rightmost edge.
2042 if (term->wrapnext && term->curs.x < term->cols-1)
2043 term->wrapnext = FALSE;
2044 term->cset_attr[term->cset] = term->save_csattr;
2045 term->sco_acs = term->save_sco_acs;
2046 set_erase_char(term);
2051 * This function is called before doing _anything_ which affects
2052 * only part of a line of text. It is used to mark the boundary
2053 * between two character positions, and it indicates that some sort
2054 * of effect is going to happen on only one side of that boundary.
2056 * The effect of this function is to check whether a CJK
2057 * double-width character is straddling the boundary, and to remove
2058 * it and replace it with two spaces if so. (Of course, one or
2059 * other of those spaces is then likely to be replaced with
2060 * something else again, as a result of whatever happens next.)
2062 * Also, if the boundary is at the right-hand _edge_ of the screen,
2063 * it implies something deliberate is being done to the rightmost
2064 * column position; hence we must clear LATTR_WRAPPED2.
2066 * The input to the function is the coordinates of the _second_
2067 * character of the pair.
2069 static void check_boundary(Terminal *term, int x, int y)
2073 /* Validate input coordinates, just in case. */
2074 if (x == 0 || x > term->cols)
2077 ldata = scrlineptr(y);
2078 if (x == term->cols) {
2079 ldata->lattr &= ~LATTR_WRAPPED2;
2081 if (ldata->chars[x].chr == UCSWIDE) {
2082 clear_cc(ldata, x-1);
2084 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2085 ldata->chars[x] = ldata->chars[x-1];
2091 * Erase a large portion of the screen: the whole screen, or the
2092 * whole line, or parts thereof.
2094 static void erase_lots(Terminal *term,
2095 int line_only, int from_begin, int to_end)
2099 int erasing_lines_from_top = 0;
2102 start.y = term->curs.y;
2104 end.y = term->curs.y + 1;
2106 erase_lattr = FALSE;
2121 if (!from_begin || !to_end)
2122 check_boundary(term, term->curs.x, term->curs.y);
2123 check_selection(term, start, end);
2125 /* Clear screen also forces a full window redraw, just in case. */
2126 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2127 term_invalidate(term);
2129 /* Lines scrolled away shouldn't be brought back on if the terminal
2131 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2132 erasing_lines_from_top = 1;
2134 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2135 /* If it's a whole number of lines, starting at the top, and
2136 * we're fully erasing them, erase by scrolling and keep the
2137 * lines in the scrollback. */
2138 int scrolllines = end.y;
2139 if (end.y == term->rows) {
2140 /* Shrink until we find a non-empty row.*/
2141 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2143 if (scrolllines > 0)
2144 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2146 termline *ldata = scrlineptr(start.y);
2147 while (poslt(start, end)) {
2148 if (start.x == term->cols) {
2150 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2152 ldata->lattr = LATTR_NORM;
2154 copy_termchar(ldata, start.x, &term->erase_char);
2156 if (incpos(start) && start.y < term->rows) {
2157 ldata = scrlineptr(start.y);
2162 /* After an erase of lines from the top of the screen, we shouldn't
2163 * bring the lines back again if the terminal enlarges (since the user or
2164 * application has explictly thrown them away). */
2165 if (erasing_lines_from_top && !(term->alt_which))
2166 term->tempsblines = 0;
2170 * Insert or delete characters within the current line. n is +ve if
2171 * insertion is desired, and -ve for deletion.
2173 static void insch(Terminal *term, int n)
2175 int dir = (n < 0 ? -1 : +1);
2180 n = (n < 0 ? -n : n);
2181 if (n > term->cols - term->curs.x)
2182 n = term->cols - term->curs.x;
2183 m = term->cols - term->curs.x - n;
2184 cursplus.y = term->curs.y;
2185 cursplus.x = term->curs.x + n;
2186 check_selection(term, term->curs, cursplus);
2187 check_boundary(term, term->curs.x, term->curs.y);
2189 check_boundary(term, term->curs.x + n, term->curs.y);
2190 ldata = scrlineptr(term->curs.y);
2192 for (j = 0; j < m; j++)
2193 move_termchar(ldata,
2194 ldata->chars + term->curs.x + j,
2195 ldata->chars + term->curs.x + j + n);
2197 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2200 move_termchar(ldata,
2201 ldata->chars + term->curs.x + j + n,
2202 ldata->chars + term->curs.x + j);
2204 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2209 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2210 * whether the mode is a DEC private one or a normal one.)
2212 static void toggle_mode(Terminal *term, int mode, int query, int state)
2216 case 1: /* DECCKM: application cursor keys */
2217 term->app_cursor_keys = state;
2219 case 2: /* DECANM: VT52 mode */
2220 term->vt52_mode = !state;
2221 if (term->vt52_mode) {
2222 term->blink_is_real = FALSE;
2223 term->vt52_bold = FALSE;
2225 term->blink_is_real = term->cfg.blinktext;
2227 term_schedule_tblink(term);
2229 case 3: /* DECCOLM: 80/132 columns */
2231 if (!term->cfg.no_remote_resize)
2232 request_resize(term->frontend, state ? 132 : 80, term->rows);
2233 term->reset_132 = state;
2234 term->alt_t = term->marg_t = 0;
2235 term->alt_b = term->marg_b = term->rows - 1;
2236 move(term, 0, 0, 0);
2237 erase_lots(term, FALSE, TRUE, TRUE);
2239 case 5: /* DECSCNM: reverse video */
2241 * Toggle reverse video. If we receive an OFF within the
2242 * visual bell timeout period after an ON, we trigger an
2243 * effective visual bell, so that ESC[?5hESC[?5l will
2244 * always be an actually _visible_ visual bell.
2246 if (term->rvideo && !state) {
2247 /* This is an OFF, so set up a vbell */
2248 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2249 } else if (!term->rvideo && state) {
2250 /* This is an ON, so we notice the time and save it. */
2251 term->rvbell_startpoint = GETTICKCOUNT();
2253 term->rvideo = state;
2254 seen_disp_event(term);
2256 case 6: /* DECOM: DEC origin mode */
2257 term->dec_om = state;
2259 case 7: /* DECAWM: auto wrap */
2262 case 8: /* DECARM: auto key repeat */
2263 term->repeat_off = !state;
2265 case 10: /* DECEDM: set local edit mode */
2266 term->term_editing = state;
2267 if (term->ldisc) /* cause ldisc to notice changes */
2268 ldisc_send(term->ldisc, NULL, 0, 0);
2270 case 25: /* DECTCEM: enable/disable cursor */
2271 compatibility2(OTHER, VT220);
2272 term->cursor_on = state;
2273 seen_disp_event(term);
2275 case 47: /* alternate screen */
2276 compatibility(OTHER);
2278 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2281 case 1000: /* xterm mouse 1 */
2282 term->xterm_mouse = state ? 1 : 0;
2283 set_raw_mouse_mode(term->frontend, state);
2285 case 1002: /* xterm mouse 2 */
2286 term->xterm_mouse = state ? 2 : 0;
2287 set_raw_mouse_mode(term->frontend, state);
2289 case 1047: /* alternate screen */
2290 compatibility(OTHER);
2292 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2295 case 1048: /* save/restore cursor */
2296 if (!term->cfg.no_alt_screen)
2297 save_cursor(term, state);
2298 if (!state) seen_disp_event(term);
2300 case 1049: /* cursor & alternate screen */
2301 if (state && !term->cfg.no_alt_screen)
2302 save_cursor(term, state);
2303 if (!state) seen_disp_event(term);
2304 compatibility(OTHER);
2306 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2307 if (!state && !term->cfg.no_alt_screen)
2308 save_cursor(term, state);
2313 case 4: /* IRM: set insert mode */
2314 compatibility(VT102);
2315 term->insert = state;
2317 case 12: /* SRM: set echo mode */
2318 term->term_echoing = !state;
2319 if (term->ldisc) /* cause ldisc to notice changes */
2320 ldisc_send(term->ldisc, NULL, 0, 0);
2322 case 20: /* LNM: Return sends ... */
2323 term->cr_lf_return = state;
2325 case 34: /* WYULCURM: Make cursor BIG */
2326 compatibility2(OTHER, VT220);
2327 term->big_cursor = !state;
2332 * Process an OSC sequence: set window title or icon name.
2334 static void do_osc(Terminal *term)
2337 while (term->osc_strlen--)
2338 term->wordness[(unsigned char)
2339 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2341 term->osc_string[term->osc_strlen] = '\0';
2342 switch (term->esc_args[0]) {
2345 if (!term->cfg.no_remote_wintitle)
2346 set_icon(term->frontend, term->osc_string);
2347 if (term->esc_args[0] == 1)
2349 /* fall through: parameter 0 means set both */
2352 if (!term->cfg.no_remote_wintitle)
2353 set_title(term->frontend, term->osc_string);
2360 * ANSI printing routines.
2362 static void term_print_setup(Terminal *term)
2364 bufchain_clear(&term->printer_buf);
2365 term->print_job = printer_start_job(term->cfg.printer);
2367 static void term_print_flush(Terminal *term)
2372 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2373 bufchain_prefix(&term->printer_buf, &data, &len);
2376 printer_job_data(term->print_job, data, len);
2377 bufchain_consume(&term->printer_buf, len);
2380 static void term_print_finish(Terminal *term)
2386 if (!term->printing && !term->only_printing)
2387 return; /* we need do nothing */
2389 term_print_flush(term);
2390 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2391 bufchain_prefix(&term->printer_buf, &data, &len);
2393 if (c == '\033' || c == '\233') {
2394 bufchain_consume(&term->printer_buf, size);
2397 printer_job_data(term->print_job, &c, 1);
2398 bufchain_consume(&term->printer_buf, 1);
2401 printer_finish_job(term->print_job);
2402 term->print_job = NULL;
2403 term->printing = term->only_printing = FALSE;
2407 * Remove everything currently in `inbuf' and stick it up on the
2408 * in-memory display. There's a big state machine in here to
2409 * process escape sequences...
2411 static void term_out(Terminal *term)
2415 unsigned char localbuf[256], *chars;
2420 chars = NULL; /* placate compiler warnings */
2421 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
2425 bufchain_prefix(&term->inbuf, &ret, &nchars);
2426 if (nchars > sizeof(localbuf))
2427 nchars = sizeof(localbuf);
2428 memcpy(localbuf, ret, nchars);
2429 bufchain_consume(&term->inbuf, nchars);
2431 assert(chars != NULL);
2437 * Optionally log the session traffic to a file. Useful for
2438 * debugging and possibly also useful for actual logging.
2440 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2441 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2447 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2448 * be able to display 8-bit characters, but I'll let that go 'cause
2453 * If we're printing, add the character to the printer
2456 if (term->printing) {
2457 bufchain_add(&term->printer_buf, &c, 1);
2460 * If we're in print-only mode, we use a much simpler
2461 * state machine designed only to recognise the ESC[4i
2462 * termination sequence.
2464 if (term->only_printing) {
2466 term->print_state = 1;
2467 else if (c == (unsigned char)'\233')
2468 term->print_state = 2;
2469 else if (c == '[' && term->print_state == 1)
2470 term->print_state = 2;
2471 else if (c == '4' && term->print_state == 2)
2472 term->print_state = 3;
2473 else if (c == 'i' && term->print_state == 3)
2474 term->print_state = 4;
2476 term->print_state = 0;
2477 if (term->print_state == 4) {
2478 term_print_finish(term);
2484 /* First see about all those translations. */
2485 if (term->termstate == TOPLEVEL) {
2487 switch (term->utf_state) {
2490 /* UTF-8 must be stateless so we ignore iso2022. */
2491 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2492 c = term->ucsdata->unitab_ctrl[c];
2493 else c = ((unsigned char)c) | CSET_ASCII;
2495 } else if ((c & 0xe0) == 0xc0) {
2496 term->utf_size = term->utf_state = 1;
2497 term->utf_char = (c & 0x1f);
2498 } else if ((c & 0xf0) == 0xe0) {
2499 term->utf_size = term->utf_state = 2;
2500 term->utf_char = (c & 0x0f);
2501 } else if ((c & 0xf8) == 0xf0) {
2502 term->utf_size = term->utf_state = 3;
2503 term->utf_char = (c & 0x07);
2504 } else if ((c & 0xfc) == 0xf8) {
2505 term->utf_size = term->utf_state = 4;
2506 term->utf_char = (c & 0x03);
2507 } else if ((c & 0xfe) == 0xfc) {
2508 term->utf_size = term->utf_state = 5;
2509 term->utf_char = (c & 0x01);
2520 if ((c & 0xC0) != 0x80) {
2523 term->utf_state = 0;
2526 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2527 if (--term->utf_state)
2532 /* Is somebody trying to be evil! */
2534 (c < 0x800 && term->utf_size >= 2) ||
2535 (c < 0x10000 && term->utf_size >= 3) ||
2536 (c < 0x200000 && term->utf_size >= 4) ||
2537 (c < 0x4000000 && term->utf_size >= 5))
2540 /* Unicode line separator and paragraph separator are CR-LF */
2541 if (c == 0x2028 || c == 0x2029)
2544 /* High controls are probably a Baaad idea too. */
2548 /* The UTF-16 surrogates are not nice either. */
2549 /* The standard give the option of decoding these:
2550 * I don't want to! */
2551 if (c >= 0xD800 && c < 0xE000)
2554 /* ISO 10646 characters now limited to UTF-16 range. */
2558 /* This is currently a TagPhobic application.. */
2559 if (c >= 0xE0000 && c <= 0xE007F)
2562 /* U+FEFF is best seen as a null. */
2565 /* But U+FFFE is an error. */
2566 if (c == 0xFFFE || c == 0xFFFF)
2571 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2572 else if(term->sco_acs &&
2573 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2575 if (term->sco_acs == 2) c |= 0x80;
2578 switch (term->cset_attr[term->cset]) {
2580 * Linedraw characters are different from 'ESC ( B'
2581 * only for a small range. For ones outside that
2582 * range, make sure we use the same font as well as
2583 * the same encoding.
2586 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2587 c = term->ucsdata->unitab_ctrl[c];
2589 c = ((unsigned char) c) | CSET_LINEDRW;
2593 /* If UK-ASCII, make the '#' a LineDraw Pound */
2595 c = '}' | CSET_LINEDRW;
2598 /*FALLTHROUGH*/ case CSET_ASCII:
2599 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2600 c = term->ucsdata->unitab_ctrl[c];
2602 c = ((unsigned char) c) | CSET_ASCII;
2605 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2612 * How about C1 controls?
2613 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2615 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2616 !term->vt52_mode && has_compat(VT220)) {
2620 term->termstate = SEEN_ESC;
2621 term->esc_query = FALSE;
2622 c = '@' + (c & 0x1F);
2626 /* Or the GL control. */
2627 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2628 if (term->curs.x && !term->wrapnext)
2630 term->wrapnext = FALSE;
2631 /* destructive backspace might be disabled */
2632 if (!term->cfg.no_dbackspace) {
2633 check_boundary(term, term->curs.x, term->curs.y);
2634 check_boundary(term, term->curs.x+1, term->curs.y);
2635 copy_termchar(scrlineptr(term->curs.y),
2636 term->curs.x, &term->erase_char);
2639 /* Or normal C0 controls. */
2640 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2642 case '\005': /* ENQ: terminal type query */
2643 /* Strictly speaking this is VT100 but a VT100 defaults to
2644 * no response. Other terminals respond at their option.
2646 * Don't put a CR in the default string as this tends to
2647 * upset some weird software.
2649 * An xterm returns "xterm" (5 characters)
2651 compatibility(ANSIMIN);
2653 char abuf[256], *s, *d;
2655 for (s = term->cfg.answerback, d = abuf; *s; s++) {
2657 if (*s >= 'a' && *s <= 'z')
2658 *d++ = (*s - ('a' - 1));
2659 else if ((*s >= '@' && *s <= '_') ||
2660 *s == '?' || (*s & 0x80))
2665 } else if (*s == '^') {
2670 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2674 case '\007': /* BEL: Bell */
2676 struct beeptime *newbeep;
2677 unsigned long ticks;
2679 ticks = GETTICKCOUNT();
2681 if (!term->beep_overloaded) {
2682 newbeep = snew(struct beeptime);
2683 newbeep->ticks = ticks;
2684 newbeep->next = NULL;
2685 if (!term->beephead)
2686 term->beephead = newbeep;
2688 term->beeptail->next = newbeep;
2689 term->beeptail = newbeep;
2694 * Throw out any beeps that happened more than
2697 while (term->beephead &&
2698 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2699 struct beeptime *tmp = term->beephead;
2700 term->beephead = tmp->next;
2702 if (!term->beephead)
2703 term->beeptail = NULL;
2707 if (term->cfg.bellovl && term->beep_overloaded &&
2708 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2710 * If we're currently overloaded and the
2711 * last beep was more than s seconds ago,
2712 * leave overload mode.
2714 term->beep_overloaded = FALSE;
2715 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2716 term->nbeeps >= term->cfg.bellovl_n) {
2718 * Now, if we have n or more beeps
2719 * remaining in the queue, go into overload
2722 term->beep_overloaded = TRUE;
2724 term->lastbeep = ticks;
2727 * Perform an actual beep if we're not overloaded.
2729 if (!term->cfg.bellovl || !term->beep_overloaded) {
2730 beep(term->frontend, term->cfg.beep);
2732 if (term->cfg.beep == BELL_VISUAL) {
2733 term_schedule_vbell(term, FALSE, 0);
2736 seen_disp_event(term);
2739 case '\b': /* BS: Back space */
2740 if (term->curs.x == 0 &&
2741 (term->curs.y == 0 || term->wrap == 0))
2743 else if (term->curs.x == 0 && term->curs.y > 0)
2744 term->curs.x = term->cols - 1, term->curs.y--;
2745 else if (term->wrapnext)
2746 term->wrapnext = FALSE;
2749 seen_disp_event(term);
2751 case '\016': /* LS1: Locking-shift one */
2752 compatibility(VT100);
2755 case '\017': /* LS0: Locking-shift zero */
2756 compatibility(VT100);
2759 case '\033': /* ESC: Escape */
2760 if (term->vt52_mode)
2761 term->termstate = VT52_ESC;
2763 compatibility(ANSIMIN);
2764 term->termstate = SEEN_ESC;
2765 term->esc_query = FALSE;
2768 case '\015': /* CR: Carriage return */
2770 term->wrapnext = FALSE;
2771 seen_disp_event(term);
2772 term->paste_hold = 0;
2774 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2776 case '\014': /* FF: Form feed */
2777 if (has_compat(SCOANSI)) {
2778 move(term, 0, 0, 0);
2779 erase_lots(term, FALSE, FALSE, TRUE);
2781 term->wrapnext = FALSE;
2782 seen_disp_event(term);
2785 case '\013': /* VT: Line tabulation */
2786 compatibility(VT100);
2787 case '\012': /* LF: Line feed */
2788 if (term->curs.y == term->marg_b)
2789 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2790 else if (term->curs.y < term->rows - 1)
2792 if (term->cfg.lfhascr)
2794 term->wrapnext = FALSE;
2795 seen_disp_event(term);
2796 term->paste_hold = 0;
2798 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2800 case '\t': /* HT: Character tabulation */
2802 pos old_curs = term->curs;
2803 termline *ldata = scrlineptr(term->curs.y);
2807 } while (term->curs.x < term->cols - 1 &&
2808 !term->tabs[term->curs.x]);
2810 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2811 if (term->curs.x >= term->cols / 2)
2812 term->curs.x = term->cols / 2 - 1;
2814 if (term->curs.x >= term->cols)
2815 term->curs.x = term->cols - 1;
2818 check_selection(term, old_curs, term->curs);
2820 seen_disp_event(term);
2824 switch (term->termstate) {
2826 /* Only graphic characters get this far;
2827 * ctrls are stripped above */
2829 termline *cline = scrlineptr(term->curs.y);
2834 width = wcwidth((wchar_t) c);
2836 if (term->wrapnext && term->wrap && width > 0) {
2837 cline->lattr |= LATTR_WRAPPED;
2838 if (term->curs.y == term->marg_b)
2839 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2840 else if (term->curs.y < term->rows - 1)
2843 term->wrapnext = FALSE;
2844 cline = scrlineptr(term->curs.y);
2846 if (term->insert && width > 0)
2848 if (term->selstate != NO_SELECTION) {
2849 pos cursplus = term->curs;
2851 check_selection(term, term->curs, cursplus);
2853 if (((c & CSET_MASK) == CSET_ASCII ||
2854 (c & CSET_MASK) == 0) &&
2856 logtraffic(term->logctx, (unsigned char) c,
2862 * If we're about to display a double-width
2863 * character starting in the rightmost
2864 * column, then we do something special
2865 * instead. We must print a space in the
2866 * last column of the screen, then wrap;
2867 * and we also set LATTR_WRAPPED2 which
2868 * instructs subsequent cut-and-pasting not
2869 * only to splice this line to the one
2870 * after it, but to ignore the space in the
2871 * last character position as well.
2872 * (Because what was actually output to the
2873 * terminal was presumably just a sequence
2874 * of CJK characters, and we don't want a
2875 * space to be pasted in the middle of
2876 * those just because they had the
2877 * misfortune to start in the wrong parity
2878 * column. xterm concurs.)
2880 check_boundary(term, term->curs.x, term->curs.y);
2881 check_boundary(term, term->curs.x+2, term->curs.y);
2882 if (term->curs.x == term->cols-1) {
2883 copy_termchar(cline, term->curs.x,
2885 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2886 if (term->curs.y == term->marg_b)
2887 scroll(term, term->marg_t, term->marg_b,
2889 else if (term->curs.y < term->rows - 1)
2892 cline = scrlineptr(term->curs.y);
2893 /* Now we must check_boundary again, of course. */
2894 check_boundary(term, term->curs.x, term->curs.y);
2895 check_boundary(term, term->curs.x+2, term->curs.y);
2899 clear_cc(cline, term->curs.x);
2900 cline->chars[term->curs.x].chr = c;
2901 cline->chars[term->curs.x].attr = term->curr_attr;
2906 clear_cc(cline, term->curs.x);
2907 cline->chars[term->curs.x].chr = UCSWIDE;
2908 cline->chars[term->curs.x].attr = term->curr_attr;
2912 check_boundary(term, term->curs.x, term->curs.y);
2913 check_boundary(term, term->curs.x+1, term->curs.y);
2916 clear_cc(cline, term->curs.x);
2917 cline->chars[term->curs.x].chr = c;
2918 cline->chars[term->curs.x].attr = term->curr_attr;
2922 if (term->curs.x > 0) {
2923 int x = term->curs.x - 1;
2925 /* If we're in wrapnext state, the character
2926 * to combine with is _here_, not to our left. */
2931 * If the previous character is
2932 * UCSWIDE, back up another one.
2934 if (cline->chars[x].chr == UCSWIDE) {
2939 add_cc(cline, x, c);
2940 seen_disp_event(term);
2947 if (term->curs.x == term->cols) {
2949 term->wrapnext = TRUE;
2950 if (term->wrap && term->vt52_mode) {
2951 cline->lattr |= LATTR_WRAPPED;
2952 if (term->curs.y == term->marg_b)
2953 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2954 else if (term->curs.y < term->rows - 1)
2957 term->wrapnext = FALSE;
2960 seen_disp_event(term);
2966 * This state is virtually identical to SEEN_ESC, with the
2967 * exception that we have an OSC sequence in the pipeline,
2968 * and _if_ we see a backslash, we process it.
2972 term->termstate = TOPLEVEL;
2975 /* else fall through */
2977 if (c >= ' ' && c <= '/') {
2978 if (term->esc_query)
2979 term->esc_query = -1;
2981 term->esc_query = c;
2984 term->termstate = TOPLEVEL;
2985 switch (ANSI(c, term->esc_query)) {
2986 case '[': /* enter CSI mode */
2987 term->termstate = SEEN_CSI;
2988 term->esc_nargs = 1;
2989 term->esc_args[0] = ARG_DEFAULT;
2990 term->esc_query = FALSE;
2992 case ']': /* OSC: xterm escape sequences */
2993 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
2994 compatibility(OTHER);
2995 term->termstate = SEEN_OSC;
2996 term->esc_args[0] = 0;
2998 case '7': /* DECSC: save cursor */
2999 compatibility(VT100);
3000 save_cursor(term, TRUE);
3002 case '8': /* DECRC: restore cursor */
3003 compatibility(VT100);
3004 save_cursor(term, FALSE);
3005 seen_disp_event(term);
3007 case '=': /* DECKPAM: Keypad application mode */
3008 compatibility(VT100);
3009 term->app_keypad_keys = TRUE;
3011 case '>': /* DECKPNM: Keypad numeric mode */
3012 compatibility(VT100);
3013 term->app_keypad_keys = FALSE;
3015 case 'D': /* IND: exactly equivalent to LF */
3016 compatibility(VT100);
3017 if (term->curs.y == term->marg_b)
3018 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3019 else if (term->curs.y < term->rows - 1)
3021 term->wrapnext = FALSE;
3022 seen_disp_event(term);
3024 case 'E': /* NEL: exactly equivalent to CR-LF */
3025 compatibility(VT100);
3027 if (term->curs.y == term->marg_b)
3028 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3029 else if (term->curs.y < term->rows - 1)
3031 term->wrapnext = FALSE;
3032 seen_disp_event(term);
3034 case 'M': /* RI: reverse index - backwards LF */
3035 compatibility(VT100);
3036 if (term->curs.y == term->marg_t)
3037 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3038 else if (term->curs.y > 0)
3040 term->wrapnext = FALSE;
3041 seen_disp_event(term);
3043 case 'Z': /* DECID: terminal type query */
3044 compatibility(VT100);
3046 ldisc_send(term->ldisc, term->id_string,
3047 strlen(term->id_string), 0);
3049 case 'c': /* RIS: restore power-on settings */
3050 compatibility(VT100);
3052 if (term->ldisc) /* cause ldisc to notice changes */
3053 ldisc_send(term->ldisc, NULL, 0, 0);
3054 if (term->reset_132) {
3055 if (!term->cfg.no_remote_resize)
3056 request_resize(term->frontend, 80, term->rows);
3057 term->reset_132 = 0;
3060 seen_disp_event(term);
3062 case 'H': /* HTS: set a tab */
3063 compatibility(VT100);
3064 term->tabs[term->curs.x] = TRUE;
3067 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3068 compatibility(VT100);
3074 for (i = 0; i < term->rows; i++) {
3075 ldata = scrlineptr(i);
3076 for (j = 0; j < term->cols; j++) {
3077 copy_termchar(ldata, j,
3078 &term->basic_erase_char);
3079 ldata->chars[j].chr = 'E';
3081 ldata->lattr = LATTR_NORM;
3084 seen_disp_event(term);
3085 scrtop.x = scrtop.y = 0;
3087 scrbot.y = term->rows;
3088 check_selection(term, scrtop, scrbot);
3092 case ANSI('3', '#'):
3093 case ANSI('4', '#'):
3094 case ANSI('5', '#'):
3095 case ANSI('6', '#'):
3096 compatibility(VT100);
3100 switch (ANSI(c, term->esc_query)) {
3101 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3104 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3107 case ANSI('5', '#'): /* DECSWL: normal */
3108 nlattr = LATTR_NORM;
3110 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3111 nlattr = LATTR_WIDE;
3114 scrlineptr(term->curs.y)->lattr = nlattr;
3117 /* GZD4: G0 designate 94-set */
3118 case ANSI('A', '('):
3119 compatibility(VT100);
3120 if (!term->cfg.no_remote_charset)
3121 term->cset_attr[0] = CSET_GBCHR;
3123 case ANSI('B', '('):
3124 compatibility(VT100);
3125 if (!term->cfg.no_remote_charset)
3126 term->cset_attr[0] = CSET_ASCII;
3128 case ANSI('0', '('):
3129 compatibility(VT100);
3130 if (!term->cfg.no_remote_charset)
3131 term->cset_attr[0] = CSET_LINEDRW;
3133 case ANSI('U', '('):
3134 compatibility(OTHER);
3135 if (!term->cfg.no_remote_charset)
3136 term->cset_attr[0] = CSET_SCOACS;
3138 /* G1D4: G1-designate 94-set */
3139 case ANSI('A', ')'):
3140 compatibility(VT100);
3141 if (!term->cfg.no_remote_charset)
3142 term->cset_attr[1] = CSET_GBCHR;
3144 case ANSI('B', ')'):
3145 compatibility(VT100);
3146 if (!term->cfg.no_remote_charset)
3147 term->cset_attr[1] = CSET_ASCII;
3149 case ANSI('0', ')'):
3150 compatibility(VT100);
3151 if (!term->cfg.no_remote_charset)
3152 term->cset_attr[1] = CSET_LINEDRW;
3154 case ANSI('U', ')'):
3155 compatibility(OTHER);
3156 if (!term->cfg.no_remote_charset)
3157 term->cset_attr[1] = CSET_SCOACS;
3159 /* DOCS: Designate other coding system */
3160 case ANSI('8', '%'): /* Old Linux code */
3161 case ANSI('G', '%'):
3162 compatibility(OTHER);
3163 if (!term->cfg.no_remote_charset)
3166 case ANSI('@', '%'):
3167 compatibility(OTHER);
3168 if (!term->cfg.no_remote_charset)
3174 term->termstate = TOPLEVEL; /* default */
3176 if (term->esc_nargs <= ARGS_MAX) {
3177 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3178 term->esc_args[term->esc_nargs - 1] = 0;
3179 term->esc_args[term->esc_nargs - 1] =
3180 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3182 term->termstate = SEEN_CSI;
3183 } else if (c == ';') {
3184 if (++term->esc_nargs <= ARGS_MAX)
3185 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3186 term->termstate = SEEN_CSI;
3187 } else if (c < '@') {
3188 if (term->esc_query)
3189 term->esc_query = -1;
3191 term->esc_query = TRUE;
3193 term->esc_query = c;
3194 term->termstate = SEEN_CSI;
3196 switch (ANSI(c, term->esc_query)) {
3197 case 'A': /* CUU: move up N lines */
3198 move(term, term->curs.x,
3199 term->curs.y - def(term->esc_args[0], 1), 1);
3200 seen_disp_event(term);
3202 case 'e': /* VPR: move down N lines */
3203 compatibility(ANSI);
3205 case 'B': /* CUD: Cursor down */
3206 move(term, term->curs.x,
3207 term->curs.y + def(term->esc_args[0], 1), 1);
3208 seen_disp_event(term);
3210 case ANSI('c', '>'): /* DA: report xterm version */
3211 compatibility(OTHER);
3212 /* this reports xterm version 136 so that VIM can
3213 use the drag messages from the mouse reporting */
3215 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3217 case 'a': /* HPR: move right N cols */
3218 compatibility(ANSI);
3220 case 'C': /* CUF: Cursor right */
3221 move(term, term->curs.x + def(term->esc_args[0], 1),
3223 seen_disp_event(term);
3225 case 'D': /* CUB: move left N cols */
3226 move(term, term->curs.x - def(term->esc_args[0], 1),
3228 seen_disp_event(term);
3230 case 'E': /* CNL: move down N lines and CR */
3231 compatibility(ANSI);
3233 term->curs.y + def(term->esc_args[0], 1), 1);
3234 seen_disp_event(term);
3236 case 'F': /* CPL: move up N lines and CR */
3237 compatibility(ANSI);
3239 term->curs.y - def(term->esc_args[0], 1), 1);
3240 seen_disp_event(term);
3243 case '`': /* HPA: set horizontal posn */
3244 compatibility(ANSI);
3245 move(term, def(term->esc_args[0], 1) - 1,
3247 seen_disp_event(term);
3249 case 'd': /* VPA: set vertical posn */
3250 compatibility(ANSI);
3251 move(term, term->curs.x,
3252 ((term->dec_om ? term->marg_t : 0) +
3253 def(term->esc_args[0], 1) - 1),
3254 (term->dec_om ? 2 : 0));
3255 seen_disp_event(term);
3258 case 'f': /* HVP: set horz and vert posns at once */
3259 if (term->esc_nargs < 2)
3260 term->esc_args[1] = ARG_DEFAULT;
3261 move(term, def(term->esc_args[1], 1) - 1,
3262 ((term->dec_om ? term->marg_t : 0) +
3263 def(term->esc_args[0], 1) - 1),
3264 (term->dec_om ? 2 : 0));
3265 seen_disp_event(term);
3267 case 'J': /* ED: erase screen or parts of it */
3269 unsigned int i = def(term->esc_args[0], 0) + 1;
3272 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3275 seen_disp_event(term);
3277 case 'K': /* EL: erase line or parts of it */
3279 unsigned int i = def(term->esc_args[0], 0) + 1;
3282 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3284 seen_disp_event(term);
3286 case 'L': /* IL: insert lines */
3287 compatibility(VT102);
3288 if (term->curs.y <= term->marg_b)
3289 scroll(term, term->curs.y, term->marg_b,
3290 -def(term->esc_args[0], 1), FALSE);
3291 seen_disp_event(term);
3293 case 'M': /* DL: delete lines */
3294 compatibility(VT102);
3295 if (term->curs.y <= term->marg_b)
3296 scroll(term, term->curs.y, term->marg_b,
3297 def(term->esc_args[0], 1),
3299 seen_disp_event(term);
3301 case '@': /* ICH: insert chars */
3302 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3303 compatibility(VT102);
3304 insch(term, def(term->esc_args[0], 1));
3305 seen_disp_event(term);
3307 case 'P': /* DCH: delete chars */
3308 compatibility(VT102);
3309 insch(term, -def(term->esc_args[0], 1));
3310 seen_disp_event(term);
3312 case 'c': /* DA: terminal type query */
3313 compatibility(VT100);
3314 /* This is the response for a VT102 */
3316 ldisc_send(term->ldisc, term->id_string,
3317 strlen(term->id_string), 0);
3319 case 'n': /* DSR: cursor position query */
3321 if (term->esc_args[0] == 6) {
3323 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3325 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3326 } else if (term->esc_args[0] == 5) {
3327 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3331 case 'h': /* SM: toggle modes to high */
3333 compatibility(VT100);
3336 for (i = 0; i < term->esc_nargs; i++)
3337 toggle_mode(term, term->esc_args[i],
3338 term->esc_query, TRUE);
3341 case 'i': /* MC: Media copy */
3343 compatibility(VT100);
3345 if (term->esc_nargs != 1) break;
3346 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3347 term->printing = TRUE;
3348 term->only_printing = !term->esc_query;
3349 term->print_state = 0;
3350 term_print_setup(term);
3351 } else if (term->esc_args[0] == 4 &&
3353 term_print_finish(term);
3357 case 'l': /* RM: toggle modes to low */
3359 compatibility(VT100);
3362 for (i = 0; i < term->esc_nargs; i++)
3363 toggle_mode(term, term->esc_args[i],
3364 term->esc_query, FALSE);
3367 case 'g': /* TBC: clear tabs */
3368 compatibility(VT100);
3369 if (term->esc_nargs == 1) {
3370 if (term->esc_args[0] == 0) {
3371 term->tabs[term->curs.x] = FALSE;
3372 } else if (term->esc_args[0] == 3) {
3374 for (i = 0; i < term->cols; i++)
3375 term->tabs[i] = FALSE;
3379 case 'r': /* DECSTBM: set scroll margins */
3380 compatibility(VT100);
3381 if (term->esc_nargs <= 2) {
3383 top = def(term->esc_args[0], 1) - 1;
3384 bot = (term->esc_nargs <= 1
3385 || term->esc_args[1] == 0 ?
3387 def(term->esc_args[1], term->rows)) - 1;
3388 if (bot >= term->rows)
3389 bot = term->rows - 1;
3390 /* VTTEST Bug 9 - if region is less than 2 lines
3391 * don't change region.
3393 if (bot - top > 0) {
3398 * I used to think the cursor should be
3399 * placed at the top of the newly marginned
3400 * area. Apparently not: VMS TPU falls over
3403 * Well actually it should for
3406 term->curs.y = (term->dec_om ?
3408 seen_disp_event(term);
3412 case 'm': /* SGR: set graphics rendition */
3415 * A VT100 without the AVO only had one
3416 * attribute, either underline or
3417 * reverse video depending on the
3418 * cursor type, this was selected by
3422 * This is sometimes DIM, eg on the
3425 * This is sometimes INVIS various ANSI.
3427 * This like 22 disables BOLD, DIM and INVIS
3429 * The ANSI colours appear on any
3430 * terminal that has colour (obviously)
3431 * but the interaction between sgr0 and
3432 * the colours varies but is usually
3433 * related to the background colour
3434 * erase item. The interaction between
3435 * colour attributes and the mono ones
3436 * is also very implementation
3439 * The 39 and 49 attributes are likely
3440 * to be unimplemented.
3443 for (i = 0; i < term->esc_nargs; i++) {
3444 switch (def(term->esc_args[i], 0)) {
3445 case 0: /* restore defaults */
3446 term->curr_attr = term->default_attr;
3448 case 1: /* enable bold */
3449 compatibility(VT100AVO);
3450 term->curr_attr |= ATTR_BOLD;
3452 case 21: /* (enable double underline) */
3453 compatibility(OTHER);
3454 case 4: /* enable underline */
3455 compatibility(VT100AVO);
3456 term->curr_attr |= ATTR_UNDER;
3458 case 5: /* enable blink */
3459 compatibility(VT100AVO);
3460 term->curr_attr |= ATTR_BLINK;
3462 case 6: /* SCO light bkgrd */
3463 compatibility(SCOANSI);
3464 term->blink_is_real = FALSE;
3465 term->curr_attr |= ATTR_BLINK;
3466 term_schedule_tblink(term);
3468 case 7: /* enable reverse video */
3469 term->curr_attr |= ATTR_REVERSE;
3471 case 10: /* SCO acs off */
3472 compatibility(SCOANSI);
3473 if (term->cfg.no_remote_charset) break;
3474 term->sco_acs = 0; break;
3475 case 11: /* SCO acs on */
3476 compatibility(SCOANSI);
3477 if (term->cfg.no_remote_charset) break;
3478 term->sco_acs = 1; break;
3479 case 12: /* SCO acs on, |0x80 */
3480 compatibility(SCOANSI);
3481 if (term->cfg.no_remote_charset) break;
3482 term->sco_acs = 2; break;
3483 case 22: /* disable bold */
3484 compatibility2(OTHER, VT220);
3485 term->curr_attr &= ~ATTR_BOLD;
3487 case 24: /* disable underline */
3488 compatibility2(OTHER, VT220);
3489 term->curr_attr &= ~ATTR_UNDER;
3491 case 25: /* disable blink */
3492 compatibility2(OTHER, VT220);
3493 term->curr_attr &= ~ATTR_BLINK;
3495 case 27: /* disable reverse video */
3496 compatibility2(OTHER, VT220);
3497 term->curr_attr &= ~ATTR_REVERSE;
3508 term->curr_attr &= ~ATTR_FGMASK;
3510 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3520 /* xterm-style bright foreground */
3521 term->curr_attr &= ~ATTR_FGMASK;
3523 ((term->esc_args[i] - 90 + 8)
3526 case 39: /* default-foreground */
3527 term->curr_attr &= ~ATTR_FGMASK;
3528 term->curr_attr |= ATTR_DEFFG;
3539 term->curr_attr &= ~ATTR_BGMASK;
3541 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3551 /* xterm-style bright background */
3552 term->curr_attr &= ~ATTR_BGMASK;
3554 ((term->esc_args[i] - 100 + 8)
3557 case 49: /* default-background */
3558 term->curr_attr &= ~ATTR_BGMASK;
3559 term->curr_attr |= ATTR_DEFBG;
3561 case 38: /* xterm 256-colour mode */
3562 if (i+2 < term->esc_nargs &&
3563 term->esc_args[i+1] == 5) {
3564 term->curr_attr &= ~ATTR_FGMASK;
3566 ((term->esc_args[i+2] & 0xFF)
3571 case 48: /* xterm 256-colour mode */
3572 if (i+2 < term->esc_nargs &&
3573 term->esc_args[i+1] == 5) {
3574 term->curr_attr &= ~ATTR_BGMASK;
3576 ((term->esc_args[i+2] & 0xFF)
3583 set_erase_char(term);
3586 case 's': /* save cursor */
3587 save_cursor(term, TRUE);
3589 case 'u': /* restore cursor */
3590 save_cursor(term, FALSE);
3591 seen_disp_event(term);
3593 case 't': /* DECSLPP: set page size - ie window height */
3595 * VT340/VT420 sequence DECSLPP, DEC only allows values
3596 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3597 * illegal values (eg first arg 1..9) for window changing
3600 if (term->esc_nargs <= 1
3601 && (term->esc_args[0] < 1 ||
3602 term->esc_args[0] >= 24)) {
3603 compatibility(VT340TEXT);
3604 if (!term->cfg.no_remote_resize)
3605 request_resize(term->frontend, term->cols,
3606 def(term->esc_args[0], 24));
3608 } else if (term->esc_nargs >= 1 &&
3609 term->esc_args[0] >= 1 &&
3610 term->esc_args[0] < 24) {
3611 compatibility(OTHER);
3613 switch (term->esc_args[0]) {
3617 set_iconic(term->frontend, FALSE);
3620 set_iconic(term->frontend, TRUE);
3623 if (term->esc_nargs >= 3) {
3624 if (!term->cfg.no_remote_resize)
3625 move_window(term->frontend,
3626 def(term->esc_args[1], 0),
3627 def(term->esc_args[2], 0));
3631 /* We should resize the window to a given
3632 * size in pixels here, but currently our
3633 * resizing code isn't healthy enough to
3638 set_zorder(term->frontend, TRUE);
3641 /* move to bottom */
3642 set_zorder(term->frontend, FALSE);
3645 refresh_window(term->frontend);
3648 if (term->esc_nargs >= 3) {
3649 if (!term->cfg.no_remote_resize)
3650 request_resize(term->frontend,
3651 def(term->esc_args[2], term->cfg.width),
3652 def(term->esc_args[1], term->cfg.height));
3656 if (term->esc_nargs >= 2)
3657 set_zoomed(term->frontend,
3663 ldisc_send(term->ldisc,
3664 is_iconic(term->frontend) ?
3665 "\033[1t" : "\033[2t", 4, 0);
3669 get_window_pos(term->frontend, &x, &y);
3670 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3671 ldisc_send(term->ldisc, buf, len, 0);
3676 get_window_pixels(term->frontend, &x, &y);
3677 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3678 ldisc_send(term->ldisc, buf, len, 0);
3683 len = sprintf(buf, "\033[8;%d;%dt",
3684 term->rows, term->cols);
3685 ldisc_send(term->ldisc, buf, len, 0);
3690 * Hmmm. Strictly speaking we
3691 * should return `the size of the
3692 * screen in characters', but
3693 * that's not easy: (a) window
3694 * furniture being what it is it's
3695 * hard to compute, and (b) in
3696 * resize-font mode maximising the
3697 * window wouldn't change the
3698 * number of characters. *shrug*. I
3699 * think we'll ignore it for the
3700 * moment and see if anyone
3701 * complains, and then ask them
3702 * what they would like it to do.
3707 !term->cfg.no_remote_qtitle) {
3708 p = get_window_title(term->frontend, TRUE);
3710 ldisc_send(term->ldisc, "\033]L", 3, 0);
3711 ldisc_send(term->ldisc, p, len, 0);
3712 ldisc_send(term->ldisc, "\033\\", 2, 0);
3717 !term->cfg.no_remote_qtitle) {
3718 p = get_window_title(term->frontend,FALSE);
3720 ldisc_send(term->ldisc, "\033]l", 3, 0);
3721 ldisc_send(term->ldisc, p, len, 0);
3722 ldisc_send(term->ldisc, "\033\\", 2, 0);
3728 case 'S': /* SU: Scroll up */
3729 compatibility(SCOANSI);
3730 scroll(term, term->marg_t, term->marg_b,
3731 def(term->esc_args[0], 1), TRUE);
3732 term->wrapnext = FALSE;
3733 seen_disp_event(term);
3735 case 'T': /* SD: Scroll down */
3736 compatibility(SCOANSI);
3737 scroll(term, term->marg_t, term->marg_b,
3738 -def(term->esc_args[0], 1), TRUE);
3739 term->wrapnext = FALSE;
3740 seen_disp_event(term);
3742 case ANSI('|', '*'): /* DECSNLS */
3744 * Set number of lines on screen
3745 * VT420 uses VGA like hardware and can
3746 * support any size in reasonable range
3747 * (24..49 AIUI) with no default specified.
3749 compatibility(VT420);
3750 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3751 if (!term->cfg.no_remote_resize)
3752 request_resize(term->frontend, term->cols,
3753 def(term->esc_args[0],
3758 case ANSI('|', '$'): /* DECSCPP */
3760 * Set number of columns per page
3761 * Docs imply range is only 80 or 132, but
3764 compatibility(VT340TEXT);
3765 if (term->esc_nargs <= 1) {
3766 if (!term->cfg.no_remote_resize)
3767 request_resize(term->frontend,
3768 def(term->esc_args[0],
3769 term->cfg.width), term->rows);
3773 case 'X': /* ECH: write N spaces w/o moving cursor */
3774 /* XXX VTTEST says this is vt220, vt510 manual
3776 compatibility(ANSIMIN);
3778 int n = def(term->esc_args[0], 1);
3780 int p = term->curs.x;
3781 termline *cline = scrlineptr(term->curs.y);
3783 if (n > term->cols - term->curs.x)
3784 n = term->cols - term->curs.x;
3785 cursplus = term->curs;
3787 check_boundary(term, term->curs.x, term->curs.y);
3788 check_boundary(term, term->curs.x+n, term->curs.y);
3789 check_selection(term, term->curs, cursplus);
3791 copy_termchar(cline, p++,
3793 seen_disp_event(term);
3796 case 'x': /* DECREQTPARM: report terminal characteristics */
3797 compatibility(VT100);
3800 int i = def(term->esc_args[0], 0);
3801 if (i == 0 || i == 1) {
3802 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3804 ldisc_send(term->ldisc, buf, 20, 0);
3808 case 'Z': /* CBT: BackTab for xterm */
3809 compatibility(OTHER);
3811 int i = def(term->esc_args[0], 1);
3812 pos old_curs = term->curs;
3814 for(;i>0 && term->curs.x>0; i--) {
3817 } while (term->curs.x >0 &&
3818 !term->tabs[term->curs.x]);
3820 check_selection(term, old_curs, term->curs);
3823 case ANSI('c', '='): /* Hide or Show Cursor */
3824 compatibility(SCOANSI);
3825 switch(term->esc_args[0]) {
3826 case 0: /* hide cursor */
3827 term->cursor_on = FALSE;
3829 case 1: /* restore cursor */
3830 term->big_cursor = FALSE;
3831 term->cursor_on = TRUE;
3833 case 2: /* block cursor */
3834 term->big_cursor = TRUE;
3835 term->cursor_on = TRUE;
3839 case ANSI('C', '='):
3841 * set cursor start on scanline esc_args[0] and
3842 * end on scanline esc_args[1].If you set
3843 * the bottom scan line to a value less than
3844 * the top scan line, the cursor will disappear.
3846 compatibility(SCOANSI);
3847 if (term->esc_nargs >= 2) {
3848 if (term->esc_args[0] > term->esc_args[1])
3849 term->cursor_on = FALSE;
3851 term->cursor_on = TRUE;
3854 case ANSI('D', '='):
3855 compatibility(SCOANSI);
3856 term->blink_is_real = FALSE;
3857 term_schedule_tblink(term);
3858 if (term->esc_args[0]>=1)
3859 term->curr_attr |= ATTR_BLINK;
3861 term->curr_attr &= ~ATTR_BLINK;
3863 case ANSI('E', '='):
3864 compatibility(SCOANSI);
3865 term->blink_is_real = (term->esc_args[0] >= 1);
3866 term_schedule_tblink(term);
3868 case ANSI('F', '='): /* set normal foreground */
3869 compatibility(SCOANSI);
3870 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3872 (sco2ansicolour[term->esc_args[0] & 0x7] |
3873 (term->esc_args[0] & 0x8)) <<
3875 term->curr_attr &= ~ATTR_FGMASK;
3876 term->curr_attr |= colour;
3877 term->default_attr &= ~ATTR_FGMASK;
3878 term->default_attr |= colour;
3881 case ANSI('G', '='): /* set normal background */
3882 compatibility(SCOANSI);
3883 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3885 (sco2ansicolour[term->esc_args[0] & 0x7] |
3886 (term->esc_args[0] & 0x8)) <<
3888 term->curr_attr &= ~ATTR_BGMASK;
3889 term->curr_attr |= colour;
3890 term->default_attr &= ~ATTR_BGMASK;
3891 term->default_attr |= colour;
3894 case ANSI('L', '='):
3895 compatibility(SCOANSI);
3896 term->use_bce = (term->esc_args[0] <= 0);
3897 set_erase_char(term);
3899 case ANSI('p', '"'): /* DECSCL: set compat level */
3901 * Allow the host to make this emulator a
3902 * 'perfect' VT102. This first appeared in
3903 * the VT220, but we do need to get back to
3904 * PuTTY mode so I won't check it.
3906 * The arg in 40..42,50 are a PuTTY extension.
3907 * The 2nd arg, 8bit vs 7bit is not checked.
3909 * Setting VT102 mode should also change
3910 * the Fkeys to generate PF* codes as a
3911 * real VT102 has no Fkeys. The VT220 does
3912 * this, F11..F13 become ESC,BS,LF other
3913 * Fkeys send nothing.
3915 * Note ESC c will NOT change this!
3918 switch (term->esc_args[0]) {
3920 term->compatibility_level &= ~TM_VTXXX;
3921 term->compatibility_level |= TM_VT102;
3924 term->compatibility_level &= ~TM_VTXXX;
3925 term->compatibility_level |= TM_VT220;
3929 if (term->esc_args[0] > 60 &&
3930 term->esc_args[0] < 70)
3931 term->compatibility_level |= TM_VTXXX;
3935 term->compatibility_level &= TM_VTXXX;
3938 term->compatibility_level = TM_PUTTY;
3941 term->compatibility_level = TM_SCOANSI;
3945 term->compatibility_level = TM_PUTTY;
3951 /* Change the response to CSI c */
3952 if (term->esc_args[0] == 50) {
3955 strcpy(term->id_string, "\033[?");
3956 for (i = 1; i < term->esc_nargs; i++) {
3958 strcat(term->id_string, ";");
3959 sprintf(lbuf, "%d", term->esc_args[i]);
3960 strcat(term->id_string, lbuf);
3962 strcat(term->id_string, "c");
3965 /* Is this a good idea ?
3966 * Well we should do a soft reset at this point ...
3968 if (!has_compat(VT420) && has_compat(VT100)) {
3969 if (!term->cfg.no_remote_resize) {
3970 if (term->reset_132)
3971 request_resize(132, 24);
3973 request_resize(80, 24);
3981 term->osc_w = FALSE;
3983 case 'P': /* Linux palette sequence */
3984 term->termstate = SEEN_OSC_P;
3985 term->osc_strlen = 0;
3987 case 'R': /* Linux palette reset */
3988 palette_reset(term->frontend);
3989 term_invalidate(term);
3990 term->termstate = TOPLEVEL;
3992 case 'W': /* word-set */
3993 term->termstate = SEEN_OSC_W;
4006 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4010 * Grotty hack to support xterm and DECterm title
4011 * sequences concurrently.
4013 if (term->esc_args[0] == 2) {
4014 term->esc_args[0] = 1;
4017 /* else fall through */
4019 term->termstate = OSC_STRING;
4020 term->osc_strlen = 0;
4025 * This OSC stuff is EVIL. It takes just one character to get into
4026 * sysline mode and it's not initially obvious how to get out.
4027 * So I've added CR and LF as string aborts.
4028 * This shouldn't effect compatibility as I believe embedded
4029 * control characters are supposed to be interpreted (maybe?)
4030 * and they don't display anything useful anyway.
4034 if (c == '\012' || c == '\015') {
4035 term->termstate = TOPLEVEL;
4036 } else if (c == 0234 || c == '\007') {
4038 * These characters terminate the string; ST and BEL
4039 * terminate the sequence and trigger instant
4040 * processing of it, whereas ESC goes back to SEEN_ESC
4041 * mode unless it is followed by \, in which case it is
4042 * synonymous with ST in the first place.
4045 term->termstate = TOPLEVEL;
4046 } else if (c == '\033')
4047 term->termstate = OSC_MAYBE_ST;
4048 else if (term->osc_strlen < OSC_STR_MAX)
4049 term->osc_string[term->osc_strlen++] = (char)c;
4053 int max = (term->osc_strlen == 0 ? 21 : 16);
4055 if ((int)c >= '0' && (int)c <= '9')
4057 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4059 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4062 term->termstate = TOPLEVEL;
4065 term->osc_string[term->osc_strlen++] = val;
4066 if (term->osc_strlen >= 7) {
4067 palette_set(term->frontend, term->osc_string[0],
4068 term->osc_string[1] * 16 + term->osc_string[2],
4069 term->osc_string[3] * 16 + term->osc_string[4],
4070 term->osc_string[5] * 16 + term->osc_string[6]);
4071 term_invalidate(term);
4072 term->termstate = TOPLEVEL;
4088 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4091 term->termstate = OSC_STRING;
4092 term->osc_strlen = 0;
4096 term->termstate = TOPLEVEL;
4097 seen_disp_event(term);
4100 move(term, term->curs.x, term->curs.y - 1, 1);
4103 move(term, term->curs.x, term->curs.y + 1, 1);
4106 move(term, term->curs.x + 1, term->curs.y, 1);
4109 move(term, term->curs.x - 1, term->curs.y, 1);
4112 * From the VT100 Manual
4113 * NOTE: The special graphics characters in the VT100
4114 * are different from those in the VT52
4116 * From VT102 manual:
4117 * 137 _ Blank - Same
4118 * 140 ` Reserved - Humm.
4119 * 141 a Solid rectangle - Similar
4120 * 142 b 1/ - Top half of fraction for the
4121 * 143 c 3/ - subscript numbers below.
4124 * 146 f Degrees - Same
4125 * 147 g Plus or minus - Same
4127 * 151 i Ellipsis (dots)
4130 * 154 l Bar at scan 0
4131 * 155 m Bar at scan 1
4132 * 156 n Bar at scan 2
4133 * 157 o Bar at scan 3 - Similar
4134 * 160 p Bar at scan 4 - Similar
4135 * 161 q Bar at scan 5 - Similar
4136 * 162 r Bar at scan 6 - Same
4137 * 163 s Bar at scan 7 - Similar
4152 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4155 term->cset_attr[term->cset = 0] = CSET_ASCII;
4158 move(term, 0, 0, 0);
4161 if (term->curs.y == 0)
4162 scroll(term, 0, term->rows - 1, -1, TRUE);
4163 else if (term->curs.y > 0)
4165 term->wrapnext = FALSE;
4168 erase_lots(term, FALSE, FALSE, TRUE);
4172 erase_lots(term, TRUE, FALSE, TRUE);
4176 /* XXX Print cursor line */
4179 /* XXX Start controller mode */
4182 /* XXX Stop controller mode */
4186 term->termstate = VT52_Y1;
4190 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4193 term->app_keypad_keys = TRUE;
4196 term->app_keypad_keys = FALSE;
4199 /* XXX This should switch to VT100 mode not current or default
4200 * VT mode. But this will only have effect in a VT220+
4203 term->vt52_mode = FALSE;
4204 term->blink_is_real = term->cfg.blinktext;
4205 term_schedule_tblink(term);
4209 /* XXX Enter auto print mode */
4212 /* XXX Exit auto print mode */
4215 /* XXX Print screen */
4221 /* compatibility(ATARI) */
4222 move(term, 0, 0, 0);
4223 erase_lots(term, FALSE, FALSE, TRUE);
4227 /* compatibility(ATARI) */
4228 if (term->curs.y <= term->marg_b)
4229 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4232 /* compatibility(ATARI) */
4233 if (term->curs.y <= term->marg_b)
4234 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4237 /* compatibility(ATARI) */
4238 term->termstate = VT52_FG;
4241 /* compatibility(ATARI) */
4242 term->termstate = VT52_BG;
4245 /* compatibility(ATARI) */
4246 erase_lots(term, FALSE, TRUE, FALSE);
4250 /* compatibility(ATARI) */
4251 term->cursor_on = TRUE;
4254 /* compatibility(ATARI) */
4255 term->cursor_on = FALSE;
4257 /* case 'j': Save cursor position - broken on ST */
4258 /* case 'k': Restore cursor position */
4260 /* compatibility(ATARI) */
4261 erase_lots(term, TRUE, TRUE, TRUE);
4263 term->wrapnext = FALSE;
4266 /* compatibility(ATARI) */
4267 erase_lots(term, TRUE, TRUE, FALSE);
4270 /* compatibility(ATARI) */
4271 term->curr_attr |= ATTR_REVERSE;
4274 /* compatibility(ATARI) */
4275 term->curr_attr &= ~ATTR_REVERSE;
4277 case 'v': /* wrap Autowrap on - Wyse style */
4278 /* compatibility(ATARI) */
4281 case 'w': /* Autowrap off */
4282 /* compatibility(ATARI) */
4287 /* compatibility(OTHER) */
4288 term->vt52_bold = FALSE;
4289 term->curr_attr = ATTR_DEFAULT;
4290 set_erase_char(term);
4293 /* compatibility(VI50) */
4294 term->curr_attr |= ATTR_UNDER;
4297 /* compatibility(VI50) */
4298 term->curr_attr &= ~ATTR_UNDER;
4301 /* compatibility(VI50) */
4302 term->vt52_bold = TRUE;
4303 term->curr_attr |= ATTR_BOLD;
4306 /* compatibility(VI50) */
4307 term->vt52_bold = FALSE;
4308 term->curr_attr &= ~ATTR_BOLD;
4314 term->termstate = VT52_Y2;
4315 move(term, term->curs.x, c - ' ', 0);
4318 term->termstate = TOPLEVEL;
4319 move(term, c - ' ', term->curs.y, 0);
4324 term->termstate = TOPLEVEL;
4325 term->curr_attr &= ~ATTR_FGMASK;
4326 term->curr_attr &= ~ATTR_BOLD;
4327 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4328 set_erase_char(term);
4331 term->termstate = TOPLEVEL;
4332 term->curr_attr &= ~ATTR_BGMASK;
4333 term->curr_attr &= ~ATTR_BLINK;
4334 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4335 set_erase_char(term);
4338 default: break; /* placate gcc warning about enum use */
4340 if (term->selstate != NO_SELECTION) {
4341 pos cursplus = term->curs;
4343 check_selection(term, term->curs, cursplus);
4347 term_print_flush(term);
4348 if (term->cfg.logflush)
4349 logflush(term->logctx);
4353 * To prevent having to run the reasonably tricky bidi algorithm
4354 * too many times, we maintain a cache of the last lineful of data
4355 * fed to the algorithm on each line of the display.
4357 static int term_bidi_cache_hit(Terminal *term, int line,
4358 termchar *lbefore, int width)
4362 if (!term->pre_bidi_cache)
4363 return FALSE; /* cache doesn't even exist yet! */
4365 if (line >= term->bidi_cache_size)
4366 return FALSE; /* cache doesn't have this many lines */
4368 if (!term->pre_bidi_cache[line].chars)
4369 return FALSE; /* cache doesn't contain _this_ line */
4371 if (term->pre_bidi_cache[line].width != width)
4372 return FALSE; /* line is wrong width */
4374 for (i = 0; i < width; i++)
4375 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4376 return FALSE; /* line doesn't match cache */
4378 return TRUE; /* it didn't match. */
4381 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4382 termchar *lafter, bidi_char *wcTo,
4383 int width, int size)
4387 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4388 int j = term->bidi_cache_size;
4389 term->bidi_cache_size = line+1;
4390 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4391 term->bidi_cache_size,
4392 struct bidi_cache_entry);
4393 term->post_bidi_cache = sresize(term->post_bidi_cache,
4394 term->bidi_cache_size,
4395 struct bidi_cache_entry);
4396 while (j < term->bidi_cache_size) {
4397 term->pre_bidi_cache[j].chars =
4398 term->post_bidi_cache[j].chars = NULL;
4399 term->pre_bidi_cache[j].width =
4400 term->post_bidi_cache[j].width = -1;
4401 term->pre_bidi_cache[j].forward =
4402 term->post_bidi_cache[j].forward = NULL;
4403 term->pre_bidi_cache[j].backward =
4404 term->post_bidi_cache[j].backward = NULL;
4409 sfree(term->pre_bidi_cache[line].chars);
4410 sfree(term->post_bidi_cache[line].chars);
4411 sfree(term->post_bidi_cache[line].forward);
4412 sfree(term->post_bidi_cache[line].backward);
4414 term->pre_bidi_cache[line].width = width;
4415 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4416 term->post_bidi_cache[line].width = width;
4417 term->post_bidi_cache[line].chars = snewn(size, termchar);
4418 term->post_bidi_cache[line].forward = snewn(width, int);
4419 term->post_bidi_cache[line].backward = snewn(width, int);
4421 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4422 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4423 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4424 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4426 for (i = 0; i < width; i++) {
4427 int p = wcTo[i].index;
4429 assert(0 <= p && p < width);
4431 term->post_bidi_cache[line].backward[i] = p;
4432 term->post_bidi_cache[line].forward[p] = i;
4437 * Prepare the bidi information for a screen line. Returns the
4438 * transformed list of termchars, or NULL if no transformation at
4439 * all took place (because bidi is disabled). If return was
4440 * non-NULL, auxiliary information such as the forward and reverse
4441 * mappings of permutation position are available in
4442 * term->post_bidi_cache[scr_y].*.
4444 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4450 /* Do Arabic shaping and bidi. */
4451 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4453 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4455 if (term->wcFromTo_size < term->cols) {
4456 term->wcFromTo_size = term->cols;
4457 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4459 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4463 for(it=0; it<term->cols ; it++)
4465 unsigned long uc = (ldata->chars[it].chr);
4467 switch (uc & CSET_MASK) {
4469 if (!term->cfg.rawcnp) {
4470 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4474 uc = term->ucsdata->unitab_line[uc & 0xFF];
4477 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4480 switch (uc & CSET_MASK) {
4482 uc = term->ucsdata->unitab_font[uc & 0xFF];
4485 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4489 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4491 term->wcFrom[it].index = it;
4495 do_bidi(term->wcFrom, term->cols);
4497 /* this is saved iff done from inside the shaping */
4498 if(!term->cfg.bidi && term->cfg.arabicshaping)
4499 for(it=0; it<term->cols; it++)
4500 term->wcTo[it] = term->wcFrom[it];
4502 if(!term->cfg.arabicshaping)
4503 do_shape(term->wcFrom, term->wcTo, term->cols);
4505 if (term->ltemp_size < ldata->size) {
4506 term->ltemp_size = ldata->size;
4507 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4511 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4513 for(it=0; it<term->cols ; it++)
4515 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4516 if (term->ltemp[it].cc_next)
4517 term->ltemp[it].cc_next -=
4518 it - term->wcTo[it].index;
4520 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4521 term->ltemp[it].chr = term->wcTo[it].wc;
4523 term_bidi_cache_store(term, scr_y, ldata->chars,
4524 term->ltemp, term->wcTo,
4525 term->cols, ldata->size);
4527 lchars = term->ltemp;
4529 lchars = term->post_bidi_cache[scr_y].chars;
4539 * Given a context, update the window. Out of paranoia, we don't
4540 * allow WM_PAINT responses to do scrolling optimisations.
4542 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4544 int i, j, our_curs_y, our_curs_x;
4549 #ifdef OPTIMISE_SCROLL
4550 struct scrollregion *sr;
4551 #endif /* OPTIMISE_SCROLL */
4555 ch = snewn(chlen, wchar_t);
4557 newline = snewn(term->cols, termchar);
4559 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4562 * screen array, disptop, scrtop,
4564 * cfg.blinkpc, blink_is_real, tblinker,
4565 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4568 /* Has the cursor position or type changed ? */
4569 if (term->cursor_on) {
4570 if (term->has_focus) {
4571 if (term->cblinker || !term->cfg.blink_cur)
4572 cursor = TATTR_ACTCURS;
4576 cursor = TATTR_PASCURS;
4578 cursor |= TATTR_RIGHTCURS;
4581 our_curs_y = term->curs.y - term->disptop;
4584 * Adjust the cursor position:
4586 * - in the case where it's resting on the right-hand half
4587 * of a CJK wide character. xterm's behaviour here,
4588 * which seems adequate to me, is to display the cursor
4589 * covering the _whole_ character, exactly as if it were
4590 * one space to the left.
4592 termline *ldata = lineptr(term->curs.y);
4595 our_curs_x = term->curs.x;
4597 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4598 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4600 lchars = ldata->chars;
4602 if (our_curs_x > 0 &&
4603 lchars[our_curs_x].chr == UCSWIDE)
4610 * If the cursor is not where it was last time we painted, and
4611 * its previous position is visible on screen, invalidate its
4612 * previous position.
4614 if (term->dispcursy >= 0 &&
4615 (term->curstype != cursor ||
4616 term->dispcursy != our_curs_y ||
4617 term->dispcursx != our_curs_x)) {
4618 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4621 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4622 dispcurs[-1].attr |= ATTR_INVALID;
4623 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4624 dispcurs[1].attr |= ATTR_INVALID;
4625 dispcurs->attr |= ATTR_INVALID;
4629 term->dispcursx = term->dispcursy = -1;
4631 #ifdef OPTIMISE_SCROLL
4633 sr = term->scrollhead;
4635 struct scrollregion *next = sr->next;
4636 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4640 term->scrollhead = term->scrolltail = NULL;
4641 #endif /* OPTIMISE_SCROLL */
4643 /* The normal screen data */
4644 for (i = 0; i < term->rows; i++) {
4647 int dirty_line, dirty_run, selected;
4648 unsigned long attr = 0, cset = 0;
4649 int updated_line = 0;
4652 int last_run_dirty = 0;
4653 int laststart, dirtyrect;
4656 scrpos.y = i + term->disptop;
4657 ldata = lineptr(scrpos.y);
4659 /* Do Arabic shaping and bidi. */
4660 lchars = term_bidi_line(term, ldata, i);
4662 backward = term->post_bidi_cache[i].backward;
4664 lchars = ldata->chars;
4669 * First loop: work along the line deciding what we want
4670 * each character cell to look like.
4672 for (j = 0; j < term->cols; j++) {
4673 unsigned long tattr, tchar;
4674 termchar *d = lchars + j;
4675 scrpos.x = backward ? backward[j] : j;
4680 if (!term->cfg.ansi_colour)
4681 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4682 ATTR_DEFFG | ATTR_DEFBG;
4684 if (!term->cfg.xterm_256_colour) {
4686 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4687 if (colour >= 16 && colour < 256)
4688 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4689 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4690 if (colour >= 16 && colour < 256)
4691 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4694 switch (tchar & CSET_MASK) {
4696 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4699 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4702 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4705 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4708 /* Video reversing things */
4709 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4710 if (term->seltype == LEXICOGRAPHIC)
4711 selected = (posle(term->selstart, scrpos) &&
4712 poslt(scrpos, term->selend));
4714 selected = (posPle(term->selstart, scrpos) &&
4715 posPlt(scrpos, term->selend));
4719 ^ (selected ? ATTR_REVERSE : 0));
4721 /* 'Real' blinking ? */
4722 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4723 if (term->has_focus && term->tblinker) {
4724 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4726 tattr &= ~ATTR_BLINK;
4730 * Check the font we'll _probably_ be using to see if
4731 * the character is wide when we don't want it to be.
4733 if (tchar != term->disptext[i]->chars[j].chr ||
4734 tattr != (term->disptext[i]->chars[j].attr &~
4735 (ATTR_NARROW | DATTR_MASK))) {
4736 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4737 tattr |= ATTR_NARROW;
4738 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4739 tattr |= ATTR_NARROW;
4741 if (i == our_curs_y && j == our_curs_x) {
4743 term->curstype = cursor;
4744 term->dispcursx = j;
4745 term->dispcursy = i;
4749 newline[j].attr = tattr;
4750 newline[j].chr = tchar;
4751 /* Combining characters are still read from lchars */
4752 newline[j].cc_next = 0;
4756 * Now loop over the line again, noting where things have
4759 * During this loop, we keep track of where we last saw
4760 * DATTR_STARTRUN. Any mismatch automatically invalidates
4761 * _all_ of the containing run that was last printed: that
4762 * is, any rectangle that was drawn in one go in the
4763 * previous update should be either left completely alone
4764 * or overwritten in its entirety. This, along with the
4765 * expectation that front ends clip all text runs to their
4766 * bounding rectangle, should solve any possible problems
4767 * with fonts that overflow their character cells.
4771 for (j = 0; j < term->cols; j++) {
4772 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
4777 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
4778 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
4779 != newline[j].attr) {
4782 for (k = laststart; k < j; k++)
4783 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
4789 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4793 * Finally, loop once more and actually do the drawing.
4795 dirty_run = dirty_line = (ldata->lattr !=
4796 term->disptext[i]->lattr);
4797 term->disptext[i]->lattr = ldata->lattr;
4799 for (j = 0; j < term->cols; j++) {
4800 unsigned long tattr, tchar;
4801 int break_run, do_copy;
4802 termchar *d = lchars + j;
4804 tattr = newline[j].attr;
4805 tchar = newline[j].chr;
4807 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4810 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4812 /* Special hack for VT100 Linedraw glyphs */
4813 if (tchar >= 0x23BA && tchar <= 0x23BD)
4817 * Separate out sequences of characters that have the
4818 * same CSET, if that CSET is a magic one.
4820 if (CSET_OF(tchar) != cset)
4824 * Break on both sides of any combined-character cell.
4826 if (d->cc_next != 0 ||
4827 (j > 0 && d[-1].cc_next != 0))
4830 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4831 if (term->disptext[i]->chars[j].chr == tchar &&
4832 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
4834 else if (!dirty_run && ccount == 1)
4839 if ((dirty_run || last_run_dirty) && ccount > 0) {
4840 do_text(ctx, start, i, ch, ccount, attr,
4842 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4843 do_cursor(ctx, start, i, ch, ccount, attr,
4851 cset = CSET_OF(tchar);
4852 if (term->ucsdata->dbcs_screenfont)
4853 last_run_dirty = dirty_run;
4854 dirty_run = dirty_line;
4858 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4864 if (ccount >= chlen) {
4865 chlen = ccount + 256;
4866 ch = sresize(ch, chlen, wchar_t);
4868 ch[ccount++] = (wchar_t) tchar;
4873 while (dd->cc_next) {
4874 unsigned long schar;
4879 switch (schar & CSET_MASK) {
4881 schar = term->ucsdata->unitab_line[schar & 0xFF];
4884 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4887 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4891 if (ccount >= chlen) {
4892 chlen = ccount + 256;
4893 ch = sresize(ch, chlen, wchar_t);
4895 ch[ccount++] = (wchar_t) schar;
4898 attr |= TATTR_COMBINING;
4902 copy_termchar(term->disptext[i], j, d);
4903 term->disptext[i]->chars[j].chr = tchar;
4904 term->disptext[i]->chars[j].attr = tattr;
4906 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
4909 /* If it's a wide char step along to the next one. */
4910 if (tattr & ATTR_WIDE) {
4911 if (++j < term->cols) {
4914 * By construction above, the cursor should not
4915 * be on the right-hand half of this character.
4918 assert(!(i == our_curs_y && j == our_curs_x));
4919 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4921 copy_termchar(term->disptext[i], j, d);
4925 if (dirty_run && ccount > 0) {
4926 do_text(ctx, start, i, ch, ccount, attr,
4928 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4929 do_cursor(ctx, start, i, ch, ccount, attr,
4943 * Invalidate the whole screen so it will be repainted in full.
4945 void term_invalidate(Terminal *term)
4949 for (i = 0; i < term->rows; i++)
4950 for (j = 0; j < term->cols; j++)
4951 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4953 term_schedule_update(term);
4957 * Paint the window in response to a WM_PAINT message.
4959 void term_paint(Terminal *term, Context ctx,
4960 int left, int top, int right, int bottom, int immediately)
4963 if (left < 0) left = 0;
4964 if (top < 0) top = 0;
4965 if (right >= term->cols) right = term->cols-1;
4966 if (bottom >= term->rows) bottom = term->rows-1;
4968 for (i = top; i <= bottom && i < term->rows; i++) {
4969 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
4970 for (j = left; j <= right && j < term->cols; j++)
4971 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4973 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
4974 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4978 do_paint (term, ctx, FALSE);
4980 term_schedule_update(term);
4985 * Attempt to scroll the scrollback. The second parameter gives the
4986 * position we want to scroll to; the first is +1 to denote that
4987 * this position is relative to the beginning of the scrollback, -1
4988 * to denote it is relative to the end, and 0 to denote that it is
4989 * relative to the current position.
4991 void term_scroll(Terminal *term, int rel, int where)
4993 int sbtop = -sblines(term);
4994 #ifdef OPTIMISE_SCROLL
4995 int olddisptop = term->disptop;
4997 #endif /* OPTIMISE_SCROLL */
4999 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5000 if (term->disptop < sbtop)
5001 term->disptop = sbtop;
5002 if (term->disptop > 0)
5005 #ifdef OPTIMISE_SCROLL
5006 shift = (term->disptop - olddisptop);
5007 if (shift < term->rows && shift > -term->rows)
5008 scroll_display(term, 0, term->rows - 1, shift);
5009 #endif /* OPTIMISE_SCROLL */
5013 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5016 wchar_t *wbptr; /* where next char goes within workbuf */
5018 int wblen = 0; /* workbuf len */
5019 int buflen; /* amount of memory allocated to workbuf */
5021 buflen = 5120; /* Default size */
5022 workbuf = snewn(buflen, wchar_t);
5023 wbptr = workbuf; /* start filling here */
5024 old_top_x = top.x; /* needed for rect==1 */
5026 while (poslt(top, bottom)) {
5028 termline *ldata = lineptr(top.y);
5032 * nlpos will point at the maximum position on this line we
5033 * should copy up to. So we start it at the end of the
5037 nlpos.x = term->cols;
5040 * ... move it backwards if there's unused space at the end
5041 * of the line (and also set `nl' if this is the case,
5042 * because in normal selection mode this means we need a
5043 * newline at the end)...
5045 if (!(ldata->lattr & LATTR_WRAPPED)) {
5046 while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5047 !ldata->chars[nlpos.x - 1].cc_next &&
5050 if (poslt(nlpos, bottom))
5052 } else if (ldata->lattr & LATTR_WRAPPED2) {
5053 /* Ignore the last char on the line in a WRAPPED2 line. */
5058 * ... and then clip it to the terminal x coordinate if
5059 * we're doing rectangular selection. (In this case we
5060 * still did the above, so that copying e.g. the right-hand
5061 * column from a table doesn't fill with spaces on the
5065 if (nlpos.x > bottom.x)
5067 nl = (top.y < bottom.y);
5070 while (poslt(top, bottom) && poslt(top, nlpos)) {
5073 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5075 wchar_t cbuf[16], *p;
5079 if (ldata->chars[x].chr == UCSWIDE) {
5085 int uc = ldata->chars[x].chr;
5087 switch (uc & CSET_MASK) {
5089 if (!term->cfg.rawcnp) {
5090 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5094 uc = term->ucsdata->unitab_line[uc & 0xFF];
5097 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5100 switch (uc & CSET_MASK) {
5102 uc = term->ucsdata->unitab_font[uc & 0xFF];
5105 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5109 set = (uc & CSET_MASK);
5110 c = (uc & ~CSET_MASK);
5114 if (DIRECT_FONT(uc)) {
5115 if (c >= ' ' && c != 0x7F) {
5119 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5121 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5122 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5126 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5130 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5137 for (p = cbuf; *p; p++) {
5138 /* Enough overhead for trailing NL and nul */
5139 if (wblen >= buflen - 16) {
5141 workbuf = sresize(workbuf, buflen, wchar_t);
5142 wbptr = workbuf + wblen;
5148 if (ldata->chars[x].cc_next)
5149 x += ldata->chars[x].cc_next;
5157 for (i = 0; i < sel_nl_sz; i++) {
5159 *wbptr++ = sel_nl[i];
5163 top.x = rect ? old_top_x : 0;
5167 #if SELECTION_NUL_TERMINATED
5171 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
5172 if (buflen > 0) /* indicates we allocated this buffer */
5176 void term_copyall(Terminal *term)
5180 tree234 *screen = term->screen;
5181 top.y = -sblines(term);
5183 bottom.y = find_last_nonempty_line(term, screen);
5184 bottom.x = term->cols;
5185 clipme(term, top, bottom, 0, TRUE);
5189 * The wordness array is mainly for deciding the disposition of the
5190 * US-ASCII characters.
5192 static int wordtype(Terminal *term, int uc)
5195 int start, end, ctype;
5197 static const struct ucsword ucs_words[] = {
5203 0x037e, 0x037e, 1}, /* Greek question mark */
5205 0x0387, 0x0387, 1}, /* Greek ano teleia */
5207 0x055a, 0x055f, 1}, /* Armenian punctuation */
5209 0x0589, 0x0589, 1}, /* Armenian full stop */
5211 0x0700, 0x070d, 1}, /* Syriac punctuation */
5213 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5215 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5217 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5219 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5221 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5223 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5225 0x2000, 0x200a, 0}, /* Various spaces */
5227 0x2070, 0x207f, 2}, /* superscript */
5229 0x2080, 0x208f, 2}, /* subscript */
5231 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5233 0x3000, 0x3000, 0}, /* ideographic space */
5235 0x3001, 0x3020, 1}, /* ideographic punctuation */
5237 0x303f, 0x309f, 3}, /* Hiragana */
5239 0x30a0, 0x30ff, 3}, /* Katakana */
5241 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5243 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5245 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5247 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5249 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5251 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5253 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5255 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5257 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5261 const struct ucsword *wptr;
5263 switch (uc & CSET_MASK) {
5265 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5268 uc = term->ucsdata->unitab_line[uc & 0xFF];
5271 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5274 switch (uc & CSET_MASK) {
5276 uc = term->ucsdata->unitab_font[uc & 0xFF];
5279 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5283 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5284 * fail as there's such a thing as a double width space. :-(
5286 if (term->ucsdata->dbcs_screenfont &&
5287 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5291 return term->wordness[uc];
5293 for (wptr = ucs_words; wptr->start; wptr++) {
5294 if (uc >= wptr->start && uc <= wptr->end)
5302 * Spread the selection outwards according to the selection mode.
5304 static pos sel_spread_half(Terminal *term, pos p, int dir)
5308 int topy = -sblines(term);
5310 ldata = lineptr(p.y);
5312 switch (term->selmode) {
5315 * In this mode, every character is a separate unit, except
5316 * for runs of spaces at the end of a non-wrapping line.
5318 if (!(ldata->lattr & LATTR_WRAPPED)) {
5319 termchar *q = ldata->chars + term->cols;
5320 while (q > ldata->chars &&
5321 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5323 if (q == ldata->chars + term->cols)
5325 if (p.x >= q - ldata->chars)
5326 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5331 * In this mode, the units are maximal runs of characters
5332 * whose `wordness' has the same value.
5334 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5337 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5338 term->cols-1 : term->cols);
5339 if (p.x < maxcols-1) {
5340 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5345 if (ldata->lattr & LATTR_WRAPPED) {
5347 ldata2 = lineptr(p.y+1);
5348 if (wordtype(term, UCSGET(ldata2->chars, 0))
5365 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5374 ldata2 = lineptr(p.y-1);
5375 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5376 term->cols-1 : term->cols);
5377 if (ldata2->lattr & LATTR_WRAPPED) {
5378 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5396 * In this mode, every line is a unit.
5398 p.x = (dir == -1 ? 0 : term->cols - 1);
5406 static void sel_spread(Terminal *term)
5408 if (term->seltype == LEXICOGRAPHIC) {
5409 term->selstart = sel_spread_half(term, term->selstart, -1);
5410 decpos(term->selend);
5411 term->selend = sel_spread_half(term, term->selend, +1);
5412 incpos(term->selend);
5416 void term_do_paste(Terminal *term)
5421 get_clip(term->frontend, &data, &len);
5422 if (data && len > 0) {
5425 term_seen_key_event(term); /* pasted data counts */
5427 if (term->paste_buffer)
5428 sfree(term->paste_buffer);
5429 term->paste_pos = term->paste_hold = term->paste_len = 0;
5430 term->paste_buffer = snewn(len, wchar_t);
5433 while (p < data + len) {
5434 while (p < data + len &&
5435 !(p <= data + len - sel_nl_sz &&
5436 !memcmp(p, sel_nl, sizeof(sel_nl))))
5441 for (i = 0; i < p - q; i++) {
5442 term->paste_buffer[term->paste_len++] = q[i];
5446 if (p <= data + len - sel_nl_sz &&
5447 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5448 term->paste_buffer[term->paste_len++] = '\015';
5454 /* Assume a small paste will be OK in one go. */
5455 if (term->paste_len < 256) {
5457 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5458 if (term->paste_buffer)
5459 sfree(term->paste_buffer);
5460 term->paste_buffer = 0;
5461 term->paste_pos = term->paste_hold = term->paste_len = 0;
5464 get_clip(term->frontend, NULL, NULL);
5467 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5468 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5472 int raw_mouse = (term->xterm_mouse &&
5473 !term->cfg.no_mouse_rep &&
5474 !(term->cfg.mouse_override && shift));
5475 int default_seltype;
5479 if (a == MA_DRAG && !raw_mouse)
5480 term_scroll(term, 0, -1);
5482 if (y >= term->rows) {
5484 if (a == MA_DRAG && !raw_mouse)
5485 term_scroll(term, 0, +1);
5494 if (x >= term->cols)
5497 selpoint.y = y + term->disptop;
5498 ldata = lineptr(selpoint.y);
5500 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5504 * Transform x through the bidi algorithm to find the _logical_
5505 * click point from the physical one.
5507 if (term_bidi_line(term, ldata, y) != NULL) {
5508 x = term->post_bidi_cache[y].backward[x];
5515 int encstate = 0, r, c;
5522 encstate = 0x20; /* left button down */
5533 case MBT_WHEEL_DOWN:
5536 default: break; /* placate gcc warning about enum use */
5540 if (term->xterm_mouse == 1)
5546 term->mouse_is_down = 0;
5549 if (term->mouse_is_down == braw)
5551 term->mouse_is_down = braw;
5553 default: break; /* placate gcc warning about enum use */
5562 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5563 ldisc_send(term->ldisc, abuf, 6, 0);
5569 * Set the selection type (rectangular or normal) at the start
5570 * of a selection attempt, from the state of Alt.
5572 if (!alt ^ !term->cfg.rect_select)
5573 default_seltype = RECTANGULAR;
5575 default_seltype = LEXICOGRAPHIC;
5577 if (term->selstate == NO_SELECTION) {
5578 term->seltype = default_seltype;
5581 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5583 term->selstate = ABOUT_TO;
5584 term->seltype = default_seltype;
5585 term->selanchor = selpoint;
5586 term->selmode = SM_CHAR;
5587 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5589 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5590 term->selstate = DRAGGING;
5591 term->selstart = term->selanchor = selpoint;
5592 term->selend = term->selstart;
5593 incpos(term->selend);
5595 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5596 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5597 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5599 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5600 term->selstate == SELECTED) {
5601 if (term->seltype == LEXICOGRAPHIC) {
5603 * For normal selection, we extend by moving
5604 * whichever end of the current selection is closer
5607 if (posdiff(selpoint, term->selstart) <
5608 posdiff(term->selend, term->selstart) / 2) {
5609 term->selanchor = term->selend;
5610 decpos(term->selanchor);
5612 term->selanchor = term->selstart;
5616 * For rectangular selection, we have a choice of
5617 * _four_ places to put selanchor and selpoint: the
5618 * four corners of the selection.
5620 if (2*selpoint.x < term->selstart.x + term->selend.x)
5621 term->selanchor.x = term->selend.x-1;
5623 term->selanchor.x = term->selstart.x;
5625 if (2*selpoint.y < term->selstart.y + term->selend.y)
5626 term->selanchor.y = term->selend.y;
5628 term->selanchor.y = term->selstart.y;
5630 term->selstate = DRAGGING;
5632 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5633 term->selanchor = selpoint;
5634 term->selstate = DRAGGING;
5635 if (term->seltype == LEXICOGRAPHIC) {
5637 * For normal selection, we set (selstart,selend) to
5638 * (selpoint,selanchor) in some order.
5640 if (poslt(selpoint, term->selanchor)) {
5641 term->selstart = selpoint;
5642 term->selend = term->selanchor;
5643 incpos(term->selend);
5645 term->selstart = term->selanchor;
5646 term->selend = selpoint;
5647 incpos(term->selend);
5651 * For rectangular selection, we may need to
5652 * interchange x and y coordinates (if the user has
5653 * dragged in the -x and +y directions, or vice versa).
5655 term->selstart.x = min(term->selanchor.x, selpoint.x);
5656 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5657 term->selstart.y = min(term->selanchor.y, selpoint.y);
5658 term->selend.y = max(term->selanchor.y, selpoint.y);
5661 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5663 if (term->selstate == DRAGGING) {
5665 * We've completed a selection. We now transfer the
5666 * data to the clipboard.
5668 clipme(term, term->selstart, term->selend,
5669 (term->seltype == RECTANGULAR), FALSE);
5670 term->selstate = SELECTED;
5672 term->selstate = NO_SELECTION;
5673 } else if (bcooked == MBT_PASTE
5675 #if MULTICLICK_ONLY_EVENT
5676 || a == MA_2CLK || a == MA_3CLK
5679 request_paste(term->frontend);
5685 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5686 unsigned int modifiers, unsigned int flags)
5690 int prependesc = FALSE;
5694 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5695 for (i = 0; i < tlen; i++)
5696 fprintf(stderr, " %04x", (unsigned)text[i]);
5697 fprintf(stderr, "\n");
5701 if ((flags & PKF_REPEAT) && term->repeat_off)
5704 /* Currently, Meta always just prefixes everything with ESC. */
5705 if (modifiers & PKM_META)
5707 modifiers &= ~PKM_META;
5710 * Alt is only used for Alt+keypad, which isn't supported yet, so
5713 modifiers &= ~PKM_ALT;
5715 /* Standard local function keys */
5716 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5718 if (keysym == PK_PAGEUP)
5719 /* scroll up one page */;
5720 if (keysym == PK_PAGEDOWN)
5721 /* scroll down on page */;
5722 if (keysym == PK_INSERT)
5723 term_do_paste(term);
5726 if (keysym == PK_PAGEUP)
5727 /* scroll up one line */;
5728 if (keysym == PK_PAGEDOWN)
5729 /* scroll down one line */;
5730 /* Control-Numlock for app-keypad mode switch */
5731 if (keysym == PK_PF1)
5732 term->app_keypad_keys ^= 1;
5736 if (modifiers & PKM_ALT) {
5737 /* Alt+F4 (close) */
5738 /* Alt+Return (full screen) */
5739 /* Alt+Space (system menu) */
5742 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5743 text[0] >= 0x20 && text[0] <= 0x7e) {
5744 /* ASCII chars + Control */
5745 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5746 (text[0] >= 0x61 && text[0] <= 0x7a))
5750 * Control-2 should return ^@ (0x00), Control-6 should return
5751 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5752 * the DOS keyboard handling did it, and we have nothing better
5753 * to do with the key combo in question, we'll also map
5754 * Control-Backquote to ^\ (0x1C).
5757 case ' ': text[0] = 0x00; break;
5758 case '-': text[0] = 0x1f; break;
5759 case '/': text[0] = 0x1f; break;
5760 case '2': text[0] = 0x00; break;
5761 case '3': text[0] = 0x1b; break;
5762 case '4': text[0] = 0x1c; break;
5763 case '5': text[0] = 0x1d; break;
5764 case '6': text[0] = 0x1e; break;
5765 case '7': text[0] = 0x1f; break;
5766 case '8': text[0] = 0x7f; break;
5767 case '`': text[0] = 0x1c; break;
5772 /* Nethack keypad */
5773 if (term->cfg.nethack_keypad) {
5776 case PK_KP1: c = 'b'; break;
5777 case PK_KP2: c = 'j'; break;
5778 case PK_KP3: c = 'n'; break;
5779 case PK_KP4: c = 'h'; break;
5780 case PK_KP5: c = '.'; break;
5781 case PK_KP6: c = 'l'; break;
5782 case PK_KP7: c = 'y'; break;
5783 case PK_KP8: c = 'k'; break;
5784 case PK_KP9: c = 'u'; break;
5785 default: break; /* else gcc warns `enum value not used' */
5789 if (modifiers & PKM_CONTROL)
5791 else if (modifiers & PKM_SHIFT)
5799 /* Numeric Keypad */
5800 if (PK_ISKEYPAD(keysym)) {
5804 * In VT400 mode, PFn always emits an escape sequence. In
5805 * Linux and tilde modes, this only happens in app keypad mode.
5807 if (term->cfg.funky_type == FUNKY_VT400 ||
5808 ((term->cfg.funky_type == FUNKY_LINUX ||
5809 term->cfg.funky_type == FUNKY_TILDE) &&
5810 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5812 case PK_PF1: xkey = 'P'; break;
5813 case PK_PF2: xkey = 'Q'; break;
5814 case PK_PF3: xkey = 'R'; break;
5815 case PK_PF4: xkey = 'S'; break;
5816 default: break; /* else gcc warns `enum value not used' */
5819 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5821 case PK_KP0: xkey = 'p'; break;
5822 case PK_KP1: xkey = 'q'; break;
5823 case PK_KP2: xkey = 'r'; break;
5824 case PK_KP3: xkey = 's'; break;
5825 case PK_KP4: xkey = 't'; break;
5826 case PK_KP5: xkey = 'u'; break;
5827 case PK_KP6: xkey = 'v'; break;
5828 case PK_KP7: xkey = 'w'; break;
5829 case PK_KP8: xkey = 'x'; break;
5830 case PK_KP9: xkey = 'y'; break;
5831 case PK_KPDECIMAL: xkey = 'n'; break;
5832 case PK_KPENTER: xkey = 'M'; break;
5833 default: break; /* else gcc warns `enum value not used' */
5835 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5837 * xterm can't see the layout of the keypad, so it has
5838 * to rely on the X keysyms returned by the keys.
5839 * Hence, we look at the strings here, not the PuTTY
5840 * keysyms (which describe the layout).
5844 if (modifiers & PKM_SHIFT)
5849 case '/': xkey = 'o'; break;
5850 case '*': xkey = 'j'; break;
5851 case '-': xkey = 'm'; break;
5855 * In all other modes, we try to retain the layout of
5856 * the DEC keypad in application mode.
5860 /* This key covers the '-' and ',' keys on a VT220 */
5861 if (modifiers & PKM_SHIFT)
5862 xkey = 'm'; /* VT220 '-' */
5864 xkey = 'l'; /* VT220 ',' */
5866 case PK_KPMINUS: xkey = 'm'; break;
5867 case PK_KPCOMMA: xkey = 'l'; break;
5868 default: break; /* else gcc warns `enum value not used' */
5873 if (term->vt52_mode) {
5874 if (xkey >= 'P' && xkey <= 'S')
5875 p += sprintf((char *) p, "\x1B%c", xkey);
5877 p += sprintf((char *) p, "\x1B?%c", xkey);
5879 p += sprintf((char *) p, "\x1BO%c", xkey);
5882 /* Not in application mode -- treat the number pad as arrow keys? */
5883 if ((flags & PKF_NUMLOCK) == 0) {
5885 case PK_KP0: keysym = PK_INSERT; break;
5886 case PK_KP1: keysym = PK_END; break;
5887 case PK_KP2: keysym = PK_DOWN; break;
5888 case PK_KP3: keysym = PK_PAGEDOWN; break;
5889 case PK_KP4: keysym = PK_LEFT; break;
5890 case PK_KP5: keysym = PK_REST; break;
5891 case PK_KP6: keysym = PK_RIGHT; break;
5892 case PK_KP7: keysym = PK_HOME; break;
5893 case PK_KP8: keysym = PK_UP; break;
5894 case PK_KP9: keysym = PK_PAGEUP; break;
5895 default: break; /* else gcc warns `enum value not used' */
5900 /* Miscellaneous keys */
5907 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5908 else if (modifiers == PKM_SHIFT)
5909 /* We do the opposite of what is configured */
5910 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5916 else if (modifiers == PKM_SHIFT)
5917 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5920 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5922 if (modifiers == PKM_CONTROL)
5927 case PK_KPENTER: /* Odd keypad modes handled above */
5928 if (modifiers == 0) {
5930 if (term->cr_lf_return)
5934 default: break; /* else gcc warns `enum value not used' */
5937 /* SCO function keys and editing keys */
5938 if (term->cfg.funky_type == FUNKY_SCO) {
5939 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
5940 static char const codes[] =
5941 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5942 int index = keysym - PK_F1;
5944 if (modifiers & PKM_SHIFT) index += 12;
5945 if (modifiers & PKM_CONTROL) index += 24;
5946 p += sprintf((char *) p, "\x1B[%c", codes[index]);
5949 if (PK_ISEDITING(keysym)) {
5953 case PK_DELETE: *p++ = 0x7f; goto done;
5954 case PK_HOME: xkey = 'H'; break;
5955 case PK_INSERT: xkey = 'L'; break;
5956 case PK_END: xkey = 'F'; break;
5957 case PK_PAGEUP: xkey = 'I'; break;
5958 case PK_PAGEDOWN: xkey = 'G'; break;
5959 default: break; /* else gcc warns `enum value not used' */
5961 p += sprintf((char *) p, "\x1B[%c", xkey);
5965 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
5968 if (term->cfg.funky_type == FUNKY_XTERM) {
5969 /* Xterm shuffles these keys, apparently. */
5971 case PK_HOME: keysym = PK_INSERT; break;
5972 case PK_INSERT: keysym = PK_HOME; break;
5973 case PK_DELETE: keysym = PK_END; break;
5974 case PK_END: keysym = PK_PAGEUP; break;
5975 case PK_PAGEUP: keysym = PK_DELETE; break;
5976 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
5977 default: break; /* else gcc warns `enum value not used' */
5982 if (term->cfg.rxvt_homeend &&
5983 (keysym == PK_HOME || keysym == PK_END)) {
5984 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
5988 if (term->vt52_mode) {
5992 * A real VT52 doesn't have these, and a VT220 doesn't
5993 * send anything for them in VT52 mode.
5996 case PK_HOME: xkey = 'H'; break;
5997 case PK_INSERT: xkey = 'L'; break;
5998 case PK_DELETE: xkey = 'M'; break;
5999 case PK_END: xkey = 'E'; break;
6000 case PK_PAGEUP: xkey = 'I'; break;
6001 case PK_PAGEDOWN: xkey = 'G'; break;
6002 default: xkey=0; break; /* else gcc warns `enum value not used'*/
6004 p += sprintf((char *) p, "\x1B%c", xkey);
6009 case PK_HOME: code = 1; break;
6010 case PK_INSERT: code = 2; break;
6011 case PK_DELETE: code = 3; break;
6012 case PK_END: code = 4; break;
6013 case PK_PAGEUP: code = 5; break;
6014 case PK_PAGEDOWN: code = 6; break;
6015 default: code = 0; break; /* else gcc warns `enum value not used' */
6017 p += sprintf((char *) p, "\x1B[%d~", code);
6021 if (PK_ISFKEY(keysym)) {
6022 /* Map Shift+F1-F10 to F11-F20 */
6023 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
6025 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
6027 /* XXX This overrides the XTERM/VT52 mode below */
6029 if (keysym >= PK_F6) offt++;
6030 if (keysym >= PK_F12) offt++;
6031 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6032 'P' + keysym - PK_F1 - offt);
6035 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6036 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6039 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6040 if (term->vt52_mode)
6041 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6043 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6046 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6050 if (PK_ISCURSOR(keysym)) {
6054 case PK_UP: xkey = 'A'; break;
6055 case PK_DOWN: xkey = 'B'; break;
6056 case PK_RIGHT: xkey = 'C'; break;
6057 case PK_LEFT: xkey = 'D'; break;
6058 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6059 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6061 if (term->vt52_mode)
6062 p += sprintf((char *) p, "\x1B%c", xkey);
6064 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
6066 /* Useful mapping of Ctrl-arrows */
6067 if (modifiers == PKM_CONTROL)
6071 p += sprintf((char *) p, "\x1BO%c", xkey);
6073 p += sprintf((char *) p, "\x1B[%c", xkey);
6079 if (p > output || tlen > 0) {
6081 * Interrupt an ongoing paste. I'm not sure
6082 * this is sensible, but for the moment it's
6083 * preferable to having to faff about buffering
6089 * We need not bother about stdin backlogs
6090 * here, because in GUI PuTTY we can't do
6091 * anything about it anyway; there's no means
6092 * of asking Windows to hold off on KEYDOWN
6093 * messages. We _have_ to buffer everything
6096 term_seen_key_event(term);
6100 fprintf(stderr, "sending ESC\n");
6102 ldisc_send(term->ldisc, "\x1b", 1, 1);
6107 fprintf(stderr, "sending %d bytes:", p - output);
6108 for (i = 0; i < p - output; i++)
6109 fprintf(stderr, " %02x", output[i]);
6110 fprintf(stderr, "\n");
6112 ldisc_send(term->ldisc, output, p - output, 1);
6113 } else if (tlen > 0) {
6115 fprintf(stderr, "sending %d unichars:", tlen);
6116 for (i = 0; i < tlen; i++)
6117 fprintf(stderr, " %04x", (unsigned) text[i]);
6118 fprintf(stderr, "\n");
6120 luni_send(term->ldisc, text, tlen, 1);
6125 void term_nopaste(Terminal *term)
6127 if (term->paste_len == 0)
6129 sfree(term->paste_buffer);
6130 term->paste_buffer = NULL;
6131 term->paste_len = 0;
6134 int term_paste_pending(Terminal *term)
6136 return term->paste_len != 0;
6139 void term_paste(Terminal *term)
6141 long now, paste_diff;
6143 if (term->paste_len == 0)
6146 /* Don't wait forever to paste */
6147 if (term->paste_hold) {
6148 now = GETTICKCOUNT();
6149 paste_diff = now - term->last_paste;
6150 if (paste_diff >= 0 && paste_diff < 450)
6153 term->paste_hold = 0;
6155 while (term->paste_pos < term->paste_len) {
6157 while (n + term->paste_pos < term->paste_len) {
6158 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6162 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6163 term->paste_pos += n;
6165 if (term->paste_pos < term->paste_len) {
6166 term->paste_hold = 1;
6170 sfree(term->paste_buffer);
6171 term->paste_buffer = NULL;
6172 term->paste_len = 0;
6175 static void deselect(Terminal *term)
6177 term->selstate = NO_SELECTION;
6178 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6181 void term_deselect(Terminal *term)
6187 int term_ldisc(Terminal *term, int option)
6189 if (option == LD_ECHO)
6190 return term->term_echoing;
6191 if (option == LD_EDIT)
6192 return term->term_editing;
6196 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6198 bufchain_add(&term->inbuf, data, len);
6200 if (!term->in_term_out) {
6201 term->in_term_out = TRUE;
6202 term_reset_cblink(term);
6204 * During drag-selects, we do not process terminal input,
6205 * because the user will want the screen to hold still to
6208 if (term->selstate != DRAGGING)
6210 term->in_term_out = FALSE;
6214 * term_out() always completely empties inbuf. Therefore,
6215 * there's no reason at all to return anything other than zero
6216 * from this function, because there _can't_ be a question of
6217 * the remote side needing to wait until term_out() has cleared
6220 * This is a slightly suboptimal way to deal with SSH2 - in
6221 * principle, the window mechanism would allow us to continue
6222 * to accept data on forwarded ports and X connections even
6223 * while the terminal processing was going slowly - but we
6224 * can't do the 100% right thing without moving the terminal
6225 * processing into a separate thread, and that might hurt
6226 * portability. So we manage stdout buffering the old SSH1 way:
6227 * if the terminal processing goes slowly, the whole SSH
6228 * connection stops accepting data until it's ready.
6230 * In practice, I can't imagine this causing serious trouble.
6235 void term_provide_logctx(Terminal *term, void *logctx)
6237 term->logctx = logctx;
6240 void term_set_focus(Terminal *term, int has_focus)
6242 term->has_focus = has_focus;
6243 term_schedule_cblink(term);