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. */
1021 fatalbox("line==NULL in terminal.c\n"
1022 "lineno=%d y=%d w=%d h=%d\n"
1023 "count(scrollback=%p)=%d\n"
1024 "count(screen=%p)=%d\n"
1025 "count(alt=%p)=%d alt_sblines=%d\n"
1026 "whichtree=%p treeindex=%d\n\n"
1027 "Please contact <putty@projects.tartarus.org> "
1028 "and pass on the above information.",
1029 lineno, y, term->cols, term->rows,
1030 term->scrollback, count234(term->scrollback),
1031 term->screen, count234(term->screen),
1032 term->alt_screen, count234(term->alt_screen), term->alt_sblines,
1033 whichtree, treeindex);
1035 assert(line != NULL);
1037 resizeline(term, line, term->cols);
1038 /* FIXME: should we sort the compressed scrollback out here? */
1043 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1044 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1046 static void term_schedule_tblink(Terminal *term);
1047 static void term_schedule_cblink(Terminal *term);
1049 static void term_timer(void *ctx, long now)
1051 Terminal *term = (Terminal *)ctx;
1054 if (term->tblink_pending && now - term->next_tblink >= 0) {
1055 term->tblinker = !term->tblinker;
1056 term->tblink_pending = FALSE;
1057 term_schedule_tblink(term);
1061 if (term->cblink_pending && now - term->next_cblink >= 0) {
1062 term->cblinker = !term->cblinker;
1063 term->cblink_pending = FALSE;
1064 term_schedule_cblink(term);
1068 if (term->in_vbell && now - term->vbell_end >= 0) {
1069 term->in_vbell = FALSE;
1074 (term->window_update_pending && now - term->next_update >= 0))
1078 static void term_schedule_update(Terminal *term)
1080 if (!term->window_update_pending) {
1081 term->window_update_pending = TRUE;
1082 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1087 * Call this whenever the terminal window state changes, to queue
1090 static void seen_disp_event(Terminal *term)
1092 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1093 term_schedule_update(term);
1097 * Call when the terminal's blinking-text settings change, or when
1098 * a text blink has just occurred.
1100 static void term_schedule_tblink(Terminal *term)
1102 if (term->blink_is_real) {
1103 if (!term->tblink_pending)
1104 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1105 term->tblink_pending = TRUE;
1107 term->tblinker = 1; /* reset when not in use */
1108 term->tblink_pending = FALSE;
1113 * Likewise with cursor blinks.
1115 static void term_schedule_cblink(Terminal *term)
1117 if (term->cfg.blink_cur && term->has_focus) {
1118 if (!term->cblink_pending)
1119 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1120 term->cblink_pending = TRUE;
1122 term->cblinker = 1; /* reset when not in use */
1123 term->cblink_pending = FALSE;
1128 * Call to reset cursor blinking on new output.
1130 static void term_reset_cblink(Terminal *term)
1132 seen_disp_event(term);
1134 term->cblink_pending = FALSE;
1135 term_schedule_cblink(term);
1139 * Call to begin a visual bell.
1141 static void term_schedule_vbell(Terminal *term, int already_started,
1144 long ticks_already_gone;
1146 if (already_started)
1147 ticks_already_gone = GETTICKCOUNT() - startpoint;
1149 ticks_already_gone = 0;
1151 if (ticks_already_gone < VBELL_DELAY) {
1152 term->in_vbell = TRUE;
1153 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1156 term->in_vbell = FALSE;
1161 * Set up power-on settings for the terminal.
1163 static void power_on(Terminal *term)
1165 term->curs.x = term->curs.y = 0;
1166 term->alt_x = term->alt_y = 0;
1167 term->savecurs.x = term->savecurs.y = 0;
1168 term->alt_t = term->marg_t = 0;
1169 if (term->rows != -1)
1170 term->alt_b = term->marg_b = term->rows - 1;
1172 term->alt_b = term->marg_b = 0;
1173 if (term->cols != -1) {
1175 for (i = 0; i < term->cols; i++)
1176 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1178 term->alt_om = term->dec_om = term->cfg.dec_om;
1179 term->alt_ins = term->insert = FALSE;
1180 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
1181 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1182 term->alt_cset = term->cset = term->save_cset = 0;
1183 term->alt_utf = term->utf = term->save_utf = 0;
1184 term->utf_state = 0;
1185 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
1186 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII;
1188 term->in_vbell = FALSE;
1189 term->cursor_on = 1;
1190 term->big_cursor = 0;
1191 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
1192 term->term_editing = term->term_echoing = FALSE;
1193 term->app_cursor_keys = term->cfg.app_cursor;
1194 term->app_keypad_keys = term->cfg.app_keypad;
1195 term->use_bce = term->cfg.bce;
1196 term->blink_is_real = term->cfg.blinktext;
1197 term->erase_char = term->basic_erase_char;
1198 term->alt_which = 0;
1199 term_print_finish(term);
1202 for (i = 0; i < 256; i++)
1203 term->wordness[i] = term->cfg.wordness[i];
1206 swap_screen(term, 1, FALSE, FALSE);
1207 erase_lots(term, FALSE, TRUE, TRUE);
1208 swap_screen(term, 0, FALSE, FALSE);
1209 erase_lots(term, FALSE, TRUE, TRUE);
1211 term_schedule_tblink(term);
1212 term_schedule_cblink(term);
1216 * Force a screen update.
1218 void term_update(Terminal *term)
1222 term->window_update_pending = FALSE;
1224 ctx = get_ctx(term->frontend);
1226 int need_sbar_update = term->seen_disp_event;
1227 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1228 term->disptop = 0; /* return to main screen */
1229 term->seen_disp_event = 0;
1230 need_sbar_update = TRUE;
1233 if (need_sbar_update)
1235 do_paint(term, ctx, TRUE);
1236 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1242 * Called from front end when a keypress occurs, to trigger
1243 * anything magical that needs to happen in that situation.
1245 void term_seen_key_event(Terminal *term)
1248 * On any keypress, clear the bell overload mechanism
1249 * completely, on the grounds that large numbers of
1250 * beeps coming from deliberate key action are likely
1251 * to be intended (e.g. beeps from filename completion
1252 * blocking repeatedly).
1254 term->beep_overloaded = FALSE;
1255 while (term->beephead) {
1256 struct beeptime *tmp = term->beephead;
1257 term->beephead = tmp->next;
1260 term->beeptail = NULL;
1264 * Reset the scrollback on keypress, if we're doing that.
1266 if (term->cfg.scroll_on_key) {
1267 term->disptop = 0; /* return to main screen */
1268 seen_disp_event(term);
1273 * Same as power_on(), but an external function.
1275 void term_pwron(Terminal *term)
1278 if (term->ldisc) /* cause ldisc to notice changes */
1279 ldisc_send(term->ldisc, NULL, 0, 0);
1285 static void set_erase_char(Terminal *term)
1287 term->erase_char = term->basic_erase_char;
1289 term->erase_char.attr = (term->curr_attr &
1290 (ATTR_FGMASK | ATTR_BGMASK));
1294 * When the user reconfigures us, we need to check the forbidden-
1295 * alternate-screen config option, disable raw mouse mode if the
1296 * user has disabled mouse reporting, and abandon a print job if
1297 * the user has disabled printing.
1299 void term_reconfig(Terminal *term, Config *cfg)
1302 * Before adopting the new config, check all those terminal
1303 * settings which control power-on defaults; and if they've
1304 * changed, we will modify the current state as well as the
1305 * default one. The full list is: Auto wrap mode, DEC Origin
1306 * Mode, BCE, blinking text, character classes.
1308 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1311 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1312 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1313 reset_bce = (term->cfg.bce != cfg->bce);
1314 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1315 reset_charclass = 0;
1316 for (i = 0; i < lenof(term->cfg.wordness); i++)
1317 if (term->cfg.wordness[i] != cfg->wordness[i])
1318 reset_charclass = 1;
1321 * If the bidi or shaping settings have changed, flush the bidi
1324 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1325 term->cfg.bidi != cfg->bidi) {
1326 for (i = 0; i < term->bidi_cache_size; i++) {
1327 sfree(term->pre_bidi_cache[i].chars);
1328 sfree(term->post_bidi_cache[i].chars);
1329 term->pre_bidi_cache[i].width = -1;
1330 term->pre_bidi_cache[i].chars = NULL;
1331 term->post_bidi_cache[i].width = -1;
1332 term->post_bidi_cache[i].chars = NULL;
1336 term->cfg = *cfg; /* STRUCTURE COPY */
1339 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1341 term->alt_om = term->dec_om = term->cfg.dec_om;
1343 term->use_bce = term->cfg.bce;
1344 set_erase_char(term);
1347 term->blink_is_real = term->cfg.blinktext;
1349 if (reset_charclass)
1350 for (i = 0; i < 256; i++)
1351 term->wordness[i] = term->cfg.wordness[i];
1353 if (term->cfg.no_alt_screen)
1354 swap_screen(term, 0, FALSE, FALSE);
1355 if (term->cfg.no_mouse_rep) {
1356 term->xterm_mouse = 0;
1357 set_raw_mouse_mode(term->frontend, 0);
1359 if (term->cfg.no_remote_charset) {
1360 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1361 term->sco_acs = term->alt_sco_acs = 0;
1364 if (!*term->cfg.printer) {
1365 term_print_finish(term);
1367 term_schedule_tblink(term);
1368 term_schedule_cblink(term);
1372 * Clear the scrollback.
1374 void term_clrsb(Terminal *term)
1378 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1379 sfree(line); /* this is compressed data, not a termline */
1381 term->tempsblines = 0;
1382 term->alt_sblines = 0;
1387 * Initialise the terminal.
1389 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1395 * Allocate a new Terminal structure and initialise the fields
1398 term = snew(Terminal);
1399 term->frontend = frontend;
1400 term->ucsdata = ucsdata;
1401 term->cfg = *mycfg; /* STRUCTURE COPY */
1402 term->logctx = NULL;
1403 term->compatibility_level = TM_PUTTY;
1404 strcpy(term->id_string, "\033[?6c");
1405 term->cblink_pending = term->tblink_pending = FALSE;
1406 term->paste_buffer = NULL;
1407 term->paste_len = 0;
1408 term->last_paste = 0;
1409 bufchain_init(&term->inbuf);
1410 bufchain_init(&term->printer_buf);
1411 term->printing = term->only_printing = FALSE;
1412 term->print_job = NULL;
1413 term->vt52_mode = FALSE;
1414 term->cr_lf_return = FALSE;
1415 term->seen_disp_event = FALSE;
1416 term->xterm_mouse = term->mouse_is_down = FALSE;
1417 term->reset_132 = FALSE;
1418 term->cblinker = term->tblinker = 0;
1419 term->has_focus = 1;
1420 term->repeat_off = FALSE;
1421 term->termstate = TOPLEVEL;
1422 term->selstate = NO_SELECTION;
1425 term->screen = term->alt_screen = term->scrollback = NULL;
1426 term->tempsblines = 0;
1427 term->alt_sblines = 0;
1429 term->disptext = NULL;
1430 term->dispcursx = term->dispcursy = -1;
1433 term->rows = term->cols = -1;
1435 term->beephead = term->beeptail = NULL;
1436 #ifdef OPTIMISE_SCROLL
1437 term->scrollhead = term->scrolltail = NULL;
1438 #endif /* OPTIMISE_SCROLL */
1440 term->lastbeep = FALSE;
1441 term->beep_overloaded = FALSE;
1442 term->attr_mask = 0xffffffff;
1443 term->resize_fn = NULL;
1444 term->resize_ctx = NULL;
1445 term->in_term_out = FALSE;
1447 term->ltemp_size = 0;
1448 term->wcFrom = NULL;
1450 term->wcFromTo_size = 0;
1452 term->window_update_pending = FALSE;
1454 term->bidi_cache_size = 0;
1455 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1458 term->basic_erase_char.chr = CSET_ASCII | ' ';
1459 term->basic_erase_char.attr = ATTR_DEFAULT;
1460 term->basic_erase_char.cc_next = 0;
1461 term->erase_char = term->basic_erase_char;
1466 void term_free(Terminal *term)
1469 struct beeptime *beep;
1472 while ((line = delpos234(term->scrollback, 0)) != NULL)
1473 sfree(line); /* compressed data, not a termline */
1474 freetree234(term->scrollback);
1475 while ((line = delpos234(term->screen, 0)) != NULL)
1477 freetree234(term->screen);
1478 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1480 freetree234(term->alt_screen);
1481 if (term->disptext) {
1482 for (i = 0; i < term->rows; i++)
1483 freeline(term->disptext[i]);
1485 sfree(term->disptext);
1486 while (term->beephead) {
1487 beep = term->beephead;
1488 term->beephead = beep->next;
1491 bufchain_clear(&term->inbuf);
1493 printer_finish_job(term->print_job);
1494 bufchain_clear(&term->printer_buf);
1495 sfree(term->paste_buffer);
1497 sfree(term->wcFrom);
1500 for (i = 0; i < term->bidi_cache_size; i++) {
1501 sfree(term->pre_bidi_cache[i].chars);
1502 sfree(term->post_bidi_cache[i].chars);
1504 sfree(term->pre_bidi_cache);
1505 sfree(term->post_bidi_cache);
1507 expire_timer_context(term);
1513 * Set up the terminal for a given size.
1515 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1518 termline **newdisp, *line;
1519 int i, j, oldrows = term->rows;
1521 int save_alt_which = term->alt_which;
1523 if (newrows == term->rows && newcols == term->cols &&
1524 newsavelines == term->savelines)
1525 return; /* nothing to do */
1528 swap_screen(term, 0, FALSE, FALSE);
1530 term->alt_t = term->marg_t = 0;
1531 term->alt_b = term->marg_b = newrows - 1;
1533 if (term->rows == -1) {
1534 term->scrollback = newtree234(NULL);
1535 term->screen = newtree234(NULL);
1536 term->tempsblines = 0;
1541 * Resize the screen and scrollback. We only need to shift
1542 * lines around within our data structures, because lineptr()
1543 * will take care of resizing each individual line if
1546 * - If the new screen is longer, we shunt lines in from temporary
1547 * scrollback if possible, otherwise we add new blank lines at
1550 * - If the new screen is shorter, we remove any blank lines at
1551 * the bottom if possible, otherwise shunt lines above the cursor
1552 * to scrollback if possible, otherwise delete lines below the
1555 * - Then, if the new scrollback length is less than the
1556 * amount of scrollback we actually have, we must throw some
1559 sblen = count234(term->scrollback);
1560 /* Do this loop to expand the screen if newrows > rows */
1561 assert(term->rows == count234(term->screen));
1562 while (term->rows < newrows) {
1563 if (term->tempsblines > 0) {
1564 unsigned char *cline;
1565 /* Insert a line from the scrollback at the top of the screen. */
1566 assert(sblen >= term->tempsblines);
1567 cline = delpos234(term->scrollback, --sblen);
1568 line = decompressline(cline, NULL);
1570 line->temporary = FALSE; /* reconstituted line is now real */
1571 term->tempsblines -= 1;
1572 addpos234(term->screen, line, 0);
1574 term->savecurs.y += 1;
1576 /* Add a new blank line at the bottom of the screen. */
1577 line = newline(term, newcols, FALSE);
1578 addpos234(term->screen, line, count234(term->screen));
1582 /* Do this loop to shrink the screen if newrows < rows */
1583 while (term->rows > newrows) {
1584 if (term->curs.y < term->rows - 1) {
1585 /* delete bottom row, unless it contains the cursor */
1586 sfree(delpos234(term->screen, term->rows - 1));
1588 /* push top row to scrollback */
1589 line = delpos234(term->screen, 0);
1590 addpos234(term->scrollback, compressline(line), sblen++);
1592 term->tempsblines += 1;
1594 term->savecurs.y -= 1;
1598 assert(term->rows == newrows);
1599 assert(count234(term->screen) == newrows);
1601 /* Delete any excess lines from the scrollback. */
1602 while (sblen > newsavelines) {
1603 line = delpos234(term->scrollback, 0);
1607 if (sblen < term->tempsblines)
1608 term->tempsblines = sblen;
1609 assert(count234(term->scrollback) <= newsavelines);
1610 assert(count234(term->scrollback) >= term->tempsblines);
1613 /* Make a new displayed text buffer. */
1614 newdisp = snewn(newrows, termline *);
1615 for (i = 0; i < newrows; i++) {
1616 newdisp[i] = newline(term, newcols, FALSE);
1617 for (j = 0; j < newcols; j++)
1618 newdisp[i]->chars[j].attr = ATTR_INVALID;
1620 if (term->disptext) {
1621 for (i = 0; i < oldrows; i++)
1622 freeline(term->disptext[i]);
1624 sfree(term->disptext);
1625 term->disptext = newdisp;
1626 term->dispcursx = term->dispcursy = -1;
1628 /* Make a new alternate screen. */
1629 newalt = newtree234(NULL);
1630 for (i = 0; i < newrows; i++) {
1631 line = newline(term, newcols, TRUE);
1632 addpos234(newalt, line, i);
1634 if (term->alt_screen) {
1635 while (NULL != (line = delpos234(term->alt_screen, 0)))
1637 freetree234(term->alt_screen);
1639 term->alt_screen = newalt;
1640 term->alt_sblines = 0;
1642 term->tabs = sresize(term->tabs, newcols, unsigned char);
1645 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1646 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1649 /* Check that the cursor positions are still valid. */
1650 if (term->savecurs.y < 0)
1651 term->savecurs.y = 0;
1652 if (term->savecurs.y >= newrows)
1653 term->savecurs.y = newrows - 1;
1654 if (term->curs.y < 0)
1656 if (term->curs.y >= newrows)
1657 term->curs.y = newrows - 1;
1658 if (term->curs.x >= newcols)
1659 term->curs.x = newcols - 1;
1660 term->alt_x = term->alt_y = 0;
1661 term->wrapnext = term->alt_wnext = FALSE;
1663 term->rows = newrows;
1664 term->cols = newcols;
1665 term->savelines = newsavelines;
1667 swap_screen(term, save_alt_which, FALSE, FALSE);
1671 if (term->resize_fn)
1672 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1676 * Hand a function and context pointer to the terminal which it can
1677 * use to notify a back end of resizes.
1679 void term_provide_resize_fn(Terminal *term,
1680 void (*resize_fn)(void *, int, int),
1683 term->resize_fn = resize_fn;
1684 term->resize_ctx = resize_ctx;
1685 if (term->cols > 0 && term->rows > 0)
1686 resize_fn(resize_ctx, term->cols, term->rows);
1689 /* Find the bottom line on the screen that has any content.
1690 * If only the top line has content, returns 0.
1691 * If no lines have content, return -1.
1693 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1696 for (i = count234(screen) - 1; i >= 0; i--) {
1697 termline *line = index234(screen, i);
1699 for (j = 0; j < line->cols; j++)
1700 if (!termchars_equal(&line->chars[j], &term->erase_char))
1702 if (j != line->cols) break;
1708 * Swap screens. If `reset' is TRUE and we have been asked to
1709 * switch to the alternate screen, we must bring most of its
1710 * configuration from the main screen and erase the contents of the
1711 * alternate screen completely. (This is even true if we're already
1712 * on it! Blame xterm.)
1714 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1720 reset = FALSE; /* do no weird resetting if which==0 */
1722 if (which != term->alt_which) {
1723 term->alt_which = which;
1725 ttr = term->alt_screen;
1726 term->alt_screen = term->screen;
1728 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1730 if (!reset && !keep_cur_pos)
1731 term->curs.x = term->alt_x;
1734 if (!reset && !keep_cur_pos)
1735 term->curs.y = term->alt_y;
1738 if (!reset) term->marg_t = term->alt_t;
1741 if (!reset) term->marg_b = term->alt_b;
1744 if (!reset) term->dec_om = term->alt_om;
1747 if (!reset) term->wrap = term->alt_wrap;
1750 if (!reset) term->wrapnext = term->alt_wnext;
1751 term->alt_wnext = t;
1753 if (!reset) term->insert = term->alt_ins;
1756 if (!reset) term->cset = term->alt_cset;
1759 if (!reset) term->utf = term->alt_utf;
1762 if (!reset) term->sco_acs = term->alt_sco_acs;
1763 term->alt_sco_acs = t;
1766 if (reset && term->screen) {
1768 * Yes, this _is_ supposed to honour background-colour-erase.
1770 erase_lots(term, FALSE, TRUE, TRUE);
1775 * Update the scroll bar.
1777 static void update_sbar(Terminal *term)
1779 int nscroll = sblines(term);
1780 set_sbar(term->frontend, nscroll + term->rows,
1781 nscroll + term->disptop, term->rows);
1785 * Check whether the region bounded by the two pointers intersects
1786 * the scroll region, and de-select the on-screen selection if so.
1788 static void check_selection(Terminal *term, pos from, pos to)
1790 if (poslt(from, term->selend) && poslt(term->selstart, to))
1795 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1796 * for backward.) `sb' is TRUE if the scrolling is permitted to
1797 * affect the scrollback buffer.
1799 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1802 int i, seltop, olddisptop, shift;
1804 if (topline != 0 || term->alt_which != 0)
1807 olddisptop = term->disptop;
1811 line = delpos234(term->screen, botline);
1812 resizeline(term, line, term->cols);
1813 for (i = 0; i < term->cols; i++)
1814 copy_termchar(line, i, &term->erase_char);
1815 line->lattr = LATTR_NORM;
1816 addpos234(term->screen, line, topline);
1818 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1820 if (term->selstart.y > botline) {
1821 term->selstart.y = botline + 1;
1822 term->selstart.x = 0;
1825 if (term->selend.y >= topline && term->selend.y <= botline) {
1827 if (term->selend.y > botline) {
1828 term->selend.y = botline + 1;
1837 line = delpos234(term->screen, topline);
1838 cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */
1839 if (sb && term->savelines > 0) {
1840 int sblen = count234(term->scrollback);
1842 * We must add this line to the scrollback. We'll
1843 * remove a line from the top of the scrollback if
1844 * the scrollback is full.
1846 if (sblen == term->savelines) {
1847 unsigned char *cline;
1850 cline = delpos234(term->scrollback, 0);
1853 term->tempsblines += 1;
1855 addpos234(term->scrollback, compressline(line), sblen);
1857 /* now `line' itself can be reused as the bottom line */
1860 * If the user is currently looking at part of the
1861 * scrollback, and they haven't enabled any options
1862 * that are going to reset the scrollback as a
1863 * result of this movement, then the chances are
1864 * they'd like to keep looking at the same line. So
1865 * we move their viewpoint at the same rate as the
1866 * scroll, at least until their viewpoint hits the
1867 * top end of the scrollback buffer, at which point
1868 * we don't have the choice any more.
1870 * Thanks to Jan Holmen Holsten for the idea and
1871 * initial implementation.
1873 if (term->disptop > -term->savelines && term->disptop < 0)
1876 resizeline(term, line, term->cols);
1877 for (i = 0; i < term->cols; i++)
1878 copy_termchar(line, i, &term->erase_char);
1879 line->lattr = LATTR_NORM;
1880 addpos234(term->screen, line, botline);
1883 * If the selection endpoints move into the scrollback,
1884 * we keep them moving until they hit the top. However,
1885 * of course, if the line _hasn't_ moved into the
1886 * scrollback then we don't do this, and cut them off
1887 * at the top of the scroll region.
1889 * This applies to selstart and selend (for an existing
1890 * selection), and also selanchor (for one being
1891 * selected as we speak).
1893 seltop = sb ? -term->savelines : topline;
1895 if (term->selstate != NO_SELECTION) {
1896 if (term->selstart.y >= seltop &&
1897 term->selstart.y <= botline) {
1899 if (term->selstart.y < seltop) {
1900 term->selstart.y = seltop;
1901 term->selstart.x = 0;
1904 if (term->selend.y >= seltop && term->selend.y <= botline) {
1906 if (term->selend.y < seltop) {
1907 term->selend.y = seltop;
1911 if (term->selanchor.y >= seltop &&
1912 term->selanchor.y <= botline) {
1913 term->selanchor.y--;
1914 if (term->selanchor.y < seltop) {
1915 term->selanchor.y = seltop;
1916 term->selanchor.x = 0;
1924 #ifdef OPTIMISE_SCROLL
1925 shift += term->disptop - olddisptop;
1926 if (shift < term->rows && shift > -term->rows && shift != 0)
1927 scroll_display(term, topline, botline, shift);
1928 #endif /* OPTIMISE_SCROLL */
1931 #ifdef OPTIMISE_SCROLL
1933 * Add a scroll of a region on the screen into the pending scroll list.
1934 * `lines' is +ve for scrolling forward, -ve for backward.
1936 * If the scroll is on the same area as the last scroll in the list,
1939 static void save_scroll(Terminal *term, int topline, int botline, int lines)
1941 struct scrollregion *newscroll;
1942 if (term->scrolltail &&
1943 term->scrolltail->topline == topline &&
1944 term->scrolltail->botline == botline) {
1945 term->scrolltail->lines += lines;
1947 newscroll = snew(struct scrollregion);
1948 newscroll->topline = topline;
1949 newscroll->botline = botline;
1950 newscroll->lines = lines;
1951 newscroll->next = NULL;
1953 if (!term->scrollhead)
1954 term->scrollhead = newscroll;
1956 term->scrolltail->next = newscroll;
1957 term->scrolltail = newscroll;
1962 * Scroll the physical display, and our conception of it in disptext.
1964 static void scroll_display(Terminal *term, int topline, int botline, int lines)
1966 int distance, nlines, i, j;
1968 distance = lines > 0 ? lines : -lines;
1969 nlines = botline - topline + 1 - distance;
1971 for (i = 0; i < nlines; i++)
1972 for (j = 0; j < term->cols; j++)
1973 copy_termchar(term->disptext[i], j,
1974 term->disptext[i+distance]->chars+j);
1975 if (term->dispcursy >= 0 &&
1976 term->dispcursy >= topline + distance &&
1977 term->dispcursy < topline + distance + nlines)
1978 term->dispcursy -= distance;
1979 for (i = 0; i < distance; i++)
1980 for (j = 0; j < term->cols; j++)
1981 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
1983 for (i = nlines; i-- ;)
1984 for (j = 0; j < term->cols; j++)
1985 copy_termchar(term->disptext[i+distance], j,
1986 term->disptext[i]->chars+j);
1987 if (term->dispcursy >= 0 &&
1988 term->dispcursy >= topline &&
1989 term->dispcursy < topline + nlines)
1990 term->dispcursy += distance;
1991 for (i = 0; i < distance; i++)
1992 for (j = 0; j < term->cols; j++)
1993 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
1995 save_scroll(term, topline, botline, lines);
1997 #endif /* OPTIMISE_SCROLL */
2000 * Move the cursor to a given position, clipping at boundaries. We
2001 * may or may not want to clip at the scroll margin: marg_clip is 0
2002 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2003 * even _being_ outside the margins.
2005 static void move(Terminal *term, int x, int y, int marg_clip)
2009 if (x >= term->cols)
2012 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2015 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2021 if (y >= term->rows)
2025 term->wrapnext = FALSE;
2029 * Save or restore the cursor and SGR mode.
2031 static void save_cursor(Terminal *term, int save)
2034 term->savecurs = term->curs;
2035 term->save_attr = term->curr_attr;
2036 term->save_cset = term->cset;
2037 term->save_utf = term->utf;
2038 term->save_wnext = term->wrapnext;
2039 term->save_csattr = term->cset_attr[term->cset];
2040 term->save_sco_acs = term->sco_acs;
2042 term->curs = term->savecurs;
2043 /* Make sure the window hasn't shrunk since the save */
2044 if (term->curs.x >= term->cols)
2045 term->curs.x = term->cols - 1;
2046 if (term->curs.y >= term->rows)
2047 term->curs.y = term->rows - 1;
2049 term->curr_attr = term->save_attr;
2050 term->cset = term->save_cset;
2051 term->utf = term->save_utf;
2052 term->wrapnext = term->save_wnext;
2054 * wrapnext might reset to False if the x position is no
2055 * longer at the rightmost edge.
2057 if (term->wrapnext && term->curs.x < term->cols-1)
2058 term->wrapnext = FALSE;
2059 term->cset_attr[term->cset] = term->save_csattr;
2060 term->sco_acs = term->save_sco_acs;
2061 set_erase_char(term);
2066 * This function is called before doing _anything_ which affects
2067 * only part of a line of text. It is used to mark the boundary
2068 * between two character positions, and it indicates that some sort
2069 * of effect is going to happen on only one side of that boundary.
2071 * The effect of this function is to check whether a CJK
2072 * double-width character is straddling the boundary, and to remove
2073 * it and replace it with two spaces if so. (Of course, one or
2074 * other of those spaces is then likely to be replaced with
2075 * something else again, as a result of whatever happens next.)
2077 * Also, if the boundary is at the right-hand _edge_ of the screen,
2078 * it implies something deliberate is being done to the rightmost
2079 * column position; hence we must clear LATTR_WRAPPED2.
2081 * The input to the function is the coordinates of the _second_
2082 * character of the pair.
2084 static void check_boundary(Terminal *term, int x, int y)
2088 /* Validate input coordinates, just in case. */
2089 if (x == 0 || x > term->cols)
2092 ldata = scrlineptr(y);
2093 if (x == term->cols) {
2094 ldata->lattr &= ~LATTR_WRAPPED2;
2096 if (ldata->chars[x].chr == UCSWIDE) {
2097 clear_cc(ldata, x-1);
2099 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2100 ldata->chars[x] = ldata->chars[x-1];
2106 * Erase a large portion of the screen: the whole screen, or the
2107 * whole line, or parts thereof.
2109 static void erase_lots(Terminal *term,
2110 int line_only, int from_begin, int to_end)
2114 int erasing_lines_from_top = 0;
2117 start.y = term->curs.y;
2119 end.y = term->curs.y + 1;
2121 erase_lattr = FALSE;
2136 if (!from_begin || !to_end)
2137 check_boundary(term, term->curs.x, term->curs.y);
2138 check_selection(term, start, end);
2140 /* Clear screen also forces a full window redraw, just in case. */
2141 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2142 term_invalidate(term);
2144 /* Lines scrolled away shouldn't be brought back on if the terminal
2146 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2147 erasing_lines_from_top = 1;
2149 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2150 /* If it's a whole number of lines, starting at the top, and
2151 * we're fully erasing them, erase by scrolling and keep the
2152 * lines in the scrollback. */
2153 int scrolllines = end.y;
2154 if (end.y == term->rows) {
2155 /* Shrink until we find a non-empty row.*/
2156 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2158 if (scrolllines > 0)
2159 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2161 termline *ldata = scrlineptr(start.y);
2162 while (poslt(start, end)) {
2163 if (start.x == term->cols) {
2165 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2167 ldata->lattr = LATTR_NORM;
2169 copy_termchar(ldata, start.x, &term->erase_char);
2171 if (incpos(start) && start.y < term->rows) {
2172 ldata = scrlineptr(start.y);
2177 /* After an erase of lines from the top of the screen, we shouldn't
2178 * bring the lines back again if the terminal enlarges (since the user or
2179 * application has explictly thrown them away). */
2180 if (erasing_lines_from_top && !(term->alt_which))
2181 term->tempsblines = 0;
2185 * Insert or delete characters within the current line. n is +ve if
2186 * insertion is desired, and -ve for deletion.
2188 static void insch(Terminal *term, int n)
2190 int dir = (n < 0 ? -1 : +1);
2195 n = (n < 0 ? -n : n);
2196 if (n > term->cols - term->curs.x)
2197 n = term->cols - term->curs.x;
2198 m = term->cols - term->curs.x - n;
2199 cursplus.y = term->curs.y;
2200 cursplus.x = term->curs.x + n;
2201 check_selection(term, term->curs, cursplus);
2202 check_boundary(term, term->curs.x, term->curs.y);
2204 check_boundary(term, term->curs.x + n, term->curs.y);
2205 ldata = scrlineptr(term->curs.y);
2207 for (j = 0; j < m; j++)
2208 move_termchar(ldata,
2209 ldata->chars + term->curs.x + j,
2210 ldata->chars + term->curs.x + j + n);
2212 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2215 move_termchar(ldata,
2216 ldata->chars + term->curs.x + j + n,
2217 ldata->chars + term->curs.x + j);
2219 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2224 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2225 * whether the mode is a DEC private one or a normal one.)
2227 static void toggle_mode(Terminal *term, int mode, int query, int state)
2231 case 1: /* DECCKM: application cursor keys */
2232 term->app_cursor_keys = state;
2234 case 2: /* DECANM: VT52 mode */
2235 term->vt52_mode = !state;
2236 if (term->vt52_mode) {
2237 term->blink_is_real = FALSE;
2238 term->vt52_bold = FALSE;
2240 term->blink_is_real = term->cfg.blinktext;
2242 term_schedule_tblink(term);
2244 case 3: /* DECCOLM: 80/132 columns */
2246 if (!term->cfg.no_remote_resize)
2247 request_resize(term->frontend, state ? 132 : 80, term->rows);
2248 term->reset_132 = state;
2249 term->alt_t = term->marg_t = 0;
2250 term->alt_b = term->marg_b = term->rows - 1;
2251 move(term, 0, 0, 0);
2252 erase_lots(term, FALSE, TRUE, TRUE);
2254 case 5: /* DECSCNM: reverse video */
2256 * Toggle reverse video. If we receive an OFF within the
2257 * visual bell timeout period after an ON, we trigger an
2258 * effective visual bell, so that ESC[?5hESC[?5l will
2259 * always be an actually _visible_ visual bell.
2261 if (term->rvideo && !state) {
2262 /* This is an OFF, so set up a vbell */
2263 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2264 } else if (!term->rvideo && state) {
2265 /* This is an ON, so we notice the time and save it. */
2266 term->rvbell_startpoint = GETTICKCOUNT();
2268 term->rvideo = state;
2269 seen_disp_event(term);
2271 case 6: /* DECOM: DEC origin mode */
2272 term->dec_om = state;
2274 case 7: /* DECAWM: auto wrap */
2277 case 8: /* DECARM: auto key repeat */
2278 term->repeat_off = !state;
2280 case 10: /* DECEDM: set local edit mode */
2281 term->term_editing = state;
2282 if (term->ldisc) /* cause ldisc to notice changes */
2283 ldisc_send(term->ldisc, NULL, 0, 0);
2285 case 25: /* DECTCEM: enable/disable cursor */
2286 compatibility2(OTHER, VT220);
2287 term->cursor_on = state;
2288 seen_disp_event(term);
2290 case 47: /* alternate screen */
2291 compatibility(OTHER);
2293 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2296 case 1000: /* xterm mouse 1 */
2297 term->xterm_mouse = state ? 1 : 0;
2298 set_raw_mouse_mode(term->frontend, state);
2300 case 1002: /* xterm mouse 2 */
2301 term->xterm_mouse = state ? 2 : 0;
2302 set_raw_mouse_mode(term->frontend, state);
2304 case 1047: /* alternate screen */
2305 compatibility(OTHER);
2307 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2310 case 1048: /* save/restore cursor */
2311 if (!term->cfg.no_alt_screen)
2312 save_cursor(term, state);
2313 if (!state) seen_disp_event(term);
2315 case 1049: /* cursor & alternate screen */
2316 if (state && !term->cfg.no_alt_screen)
2317 save_cursor(term, state);
2318 if (!state) seen_disp_event(term);
2319 compatibility(OTHER);
2321 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2322 if (!state && !term->cfg.no_alt_screen)
2323 save_cursor(term, state);
2328 case 4: /* IRM: set insert mode */
2329 compatibility(VT102);
2330 term->insert = state;
2332 case 12: /* SRM: set echo mode */
2333 term->term_echoing = !state;
2334 if (term->ldisc) /* cause ldisc to notice changes */
2335 ldisc_send(term->ldisc, NULL, 0, 0);
2337 case 20: /* LNM: Return sends ... */
2338 term->cr_lf_return = state;
2340 case 34: /* WYULCURM: Make cursor BIG */
2341 compatibility2(OTHER, VT220);
2342 term->big_cursor = !state;
2347 * Process an OSC sequence: set window title or icon name.
2349 static void do_osc(Terminal *term)
2352 while (term->osc_strlen--)
2353 term->wordness[(unsigned char)
2354 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2356 term->osc_string[term->osc_strlen] = '\0';
2357 switch (term->esc_args[0]) {
2360 if (!term->cfg.no_remote_wintitle)
2361 set_icon(term->frontend, term->osc_string);
2362 if (term->esc_args[0] == 1)
2364 /* fall through: parameter 0 means set both */
2367 if (!term->cfg.no_remote_wintitle)
2368 set_title(term->frontend, term->osc_string);
2375 * ANSI printing routines.
2377 static void term_print_setup(Terminal *term)
2379 bufchain_clear(&term->printer_buf);
2380 term->print_job = printer_start_job(term->cfg.printer);
2382 static void term_print_flush(Terminal *term)
2387 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2388 bufchain_prefix(&term->printer_buf, &data, &len);
2391 printer_job_data(term->print_job, data, len);
2392 bufchain_consume(&term->printer_buf, len);
2395 static void term_print_finish(Terminal *term)
2401 if (!term->printing && !term->only_printing)
2402 return; /* we need do nothing */
2404 term_print_flush(term);
2405 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2406 bufchain_prefix(&term->printer_buf, &data, &len);
2408 if (c == '\033' || c == '\233') {
2409 bufchain_consume(&term->printer_buf, size);
2412 printer_job_data(term->print_job, &c, 1);
2413 bufchain_consume(&term->printer_buf, 1);
2416 printer_finish_job(term->print_job);
2417 term->print_job = NULL;
2418 term->printing = term->only_printing = FALSE;
2422 * Remove everything currently in `inbuf' and stick it up on the
2423 * in-memory display. There's a big state machine in here to
2424 * process escape sequences...
2426 static void term_out(Terminal *term)
2430 unsigned char localbuf[256], *chars;
2435 chars = NULL; /* placate compiler warnings */
2436 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
2440 bufchain_prefix(&term->inbuf, &ret, &nchars);
2441 if (nchars > sizeof(localbuf))
2442 nchars = sizeof(localbuf);
2443 memcpy(localbuf, ret, nchars);
2444 bufchain_consume(&term->inbuf, nchars);
2446 assert(chars != NULL);
2452 * Optionally log the session traffic to a file. Useful for
2453 * debugging and possibly also useful for actual logging.
2455 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2456 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2462 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2463 * be able to display 8-bit characters, but I'll let that go 'cause
2468 * If we're printing, add the character to the printer
2471 if (term->printing) {
2472 bufchain_add(&term->printer_buf, &c, 1);
2475 * If we're in print-only mode, we use a much simpler
2476 * state machine designed only to recognise the ESC[4i
2477 * termination sequence.
2479 if (term->only_printing) {
2481 term->print_state = 1;
2482 else if (c == (unsigned char)'\233')
2483 term->print_state = 2;
2484 else if (c == '[' && term->print_state == 1)
2485 term->print_state = 2;
2486 else if (c == '4' && term->print_state == 2)
2487 term->print_state = 3;
2488 else if (c == 'i' && term->print_state == 3)
2489 term->print_state = 4;
2491 term->print_state = 0;
2492 if (term->print_state == 4) {
2493 term_print_finish(term);
2499 /* First see about all those translations. */
2500 if (term->termstate == TOPLEVEL) {
2502 switch (term->utf_state) {
2505 /* UTF-8 must be stateless so we ignore iso2022. */
2506 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2507 c = term->ucsdata->unitab_ctrl[c];
2508 else c = ((unsigned char)c) | CSET_ASCII;
2510 } else if ((c & 0xe0) == 0xc0) {
2511 term->utf_size = term->utf_state = 1;
2512 term->utf_char = (c & 0x1f);
2513 } else if ((c & 0xf0) == 0xe0) {
2514 term->utf_size = term->utf_state = 2;
2515 term->utf_char = (c & 0x0f);
2516 } else if ((c & 0xf8) == 0xf0) {
2517 term->utf_size = term->utf_state = 3;
2518 term->utf_char = (c & 0x07);
2519 } else if ((c & 0xfc) == 0xf8) {
2520 term->utf_size = term->utf_state = 4;
2521 term->utf_char = (c & 0x03);
2522 } else if ((c & 0xfe) == 0xfc) {
2523 term->utf_size = term->utf_state = 5;
2524 term->utf_char = (c & 0x01);
2535 if ((c & 0xC0) != 0x80) {
2538 term->utf_state = 0;
2541 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2542 if (--term->utf_state)
2547 /* Is somebody trying to be evil! */
2549 (c < 0x800 && term->utf_size >= 2) ||
2550 (c < 0x10000 && term->utf_size >= 3) ||
2551 (c < 0x200000 && term->utf_size >= 4) ||
2552 (c < 0x4000000 && term->utf_size >= 5))
2555 /* Unicode line separator and paragraph separator are CR-LF */
2556 if (c == 0x2028 || c == 0x2029)
2559 /* High controls are probably a Baaad idea too. */
2563 /* The UTF-16 surrogates are not nice either. */
2564 /* The standard give the option of decoding these:
2565 * I don't want to! */
2566 if (c >= 0xD800 && c < 0xE000)
2569 /* ISO 10646 characters now limited to UTF-16 range. */
2573 /* This is currently a TagPhobic application.. */
2574 if (c >= 0xE0000 && c <= 0xE007F)
2577 /* U+FEFF is best seen as a null. */
2580 /* But U+FFFE is an error. */
2581 if (c == 0xFFFE || c == 0xFFFF)
2586 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2587 else if(term->sco_acs &&
2588 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2590 if (term->sco_acs == 2) c |= 0x80;
2593 switch (term->cset_attr[term->cset]) {
2595 * Linedraw characters are different from 'ESC ( B'
2596 * only for a small range. For ones outside that
2597 * range, make sure we use the same font as well as
2598 * the same encoding.
2601 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2602 c = term->ucsdata->unitab_ctrl[c];
2604 c = ((unsigned char) c) | CSET_LINEDRW;
2608 /* If UK-ASCII, make the '#' a LineDraw Pound */
2610 c = '}' | CSET_LINEDRW;
2613 /*FALLTHROUGH*/ case CSET_ASCII:
2614 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2615 c = term->ucsdata->unitab_ctrl[c];
2617 c = ((unsigned char) c) | CSET_ASCII;
2620 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2627 * How about C1 controls?
2628 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2630 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2631 !term->vt52_mode && has_compat(VT220)) {
2635 term->termstate = SEEN_ESC;
2636 term->esc_query = FALSE;
2637 c = '@' + (c & 0x1F);
2641 /* Or the GL control. */
2642 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2643 if (term->curs.x && !term->wrapnext)
2645 term->wrapnext = FALSE;
2646 /* destructive backspace might be disabled */
2647 if (!term->cfg.no_dbackspace) {
2648 check_boundary(term, term->curs.x, term->curs.y);
2649 check_boundary(term, term->curs.x+1, term->curs.y);
2650 copy_termchar(scrlineptr(term->curs.y),
2651 term->curs.x, &term->erase_char);
2654 /* Or normal C0 controls. */
2655 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2657 case '\005': /* ENQ: terminal type query */
2659 * Strictly speaking this is VT100 but a VT100 defaults to
2660 * no response. Other terminals respond at their option.
2662 * Don't put a CR in the default string as this tends to
2663 * upset some weird software.
2665 compatibility(ANSIMIN);
2667 char abuf[256], *s, *d;
2669 for (s = term->cfg.answerback, d = abuf; *s; s++) {
2671 if (*s >= 'a' && *s <= 'z')
2672 *d++ = (*s - ('a' - 1));
2673 else if ((*s >= '@' && *s <= '_') ||
2674 *s == '?' || (*s & 0x80))
2679 } else if (*s == '^') {
2684 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2688 case '\007': /* BEL: Bell */
2690 struct beeptime *newbeep;
2691 unsigned long ticks;
2693 ticks = GETTICKCOUNT();
2695 if (!term->beep_overloaded) {
2696 newbeep = snew(struct beeptime);
2697 newbeep->ticks = ticks;
2698 newbeep->next = NULL;
2699 if (!term->beephead)
2700 term->beephead = newbeep;
2702 term->beeptail->next = newbeep;
2703 term->beeptail = newbeep;
2708 * Throw out any beeps that happened more than
2711 while (term->beephead &&
2712 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2713 struct beeptime *tmp = term->beephead;
2714 term->beephead = tmp->next;
2716 if (!term->beephead)
2717 term->beeptail = NULL;
2721 if (term->cfg.bellovl && term->beep_overloaded &&
2722 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2724 * If we're currently overloaded and the
2725 * last beep was more than s seconds ago,
2726 * leave overload mode.
2728 term->beep_overloaded = FALSE;
2729 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2730 term->nbeeps >= term->cfg.bellovl_n) {
2732 * Now, if we have n or more beeps
2733 * remaining in the queue, go into overload
2736 term->beep_overloaded = TRUE;
2738 term->lastbeep = ticks;
2741 * Perform an actual beep if we're not overloaded.
2743 if (!term->cfg.bellovl || !term->beep_overloaded) {
2744 beep(term->frontend, term->cfg.beep);
2746 if (term->cfg.beep == BELL_VISUAL) {
2747 term_schedule_vbell(term, FALSE, 0);
2750 seen_disp_event(term);
2753 case '\b': /* BS: Back space */
2754 if (term->curs.x == 0 &&
2755 (term->curs.y == 0 || term->wrap == 0))
2757 else if (term->curs.x == 0 && term->curs.y > 0)
2758 term->curs.x = term->cols - 1, term->curs.y--;
2759 else if (term->wrapnext)
2760 term->wrapnext = FALSE;
2763 seen_disp_event(term);
2765 case '\016': /* LS1: Locking-shift one */
2766 compatibility(VT100);
2769 case '\017': /* LS0: Locking-shift zero */
2770 compatibility(VT100);
2773 case '\033': /* ESC: Escape */
2774 if (term->vt52_mode)
2775 term->termstate = VT52_ESC;
2777 compatibility(ANSIMIN);
2778 term->termstate = SEEN_ESC;
2779 term->esc_query = FALSE;
2782 case '\015': /* CR: Carriage return */
2784 term->wrapnext = FALSE;
2785 seen_disp_event(term);
2786 term->paste_hold = 0;
2788 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2790 case '\014': /* FF: Form feed */
2791 if (has_compat(SCOANSI)) {
2792 move(term, 0, 0, 0);
2793 erase_lots(term, FALSE, FALSE, TRUE);
2795 term->wrapnext = FALSE;
2796 seen_disp_event(term);
2799 case '\013': /* VT: Line tabulation */
2800 compatibility(VT100);
2801 case '\012': /* LF: Line feed */
2802 if (term->curs.y == term->marg_b)
2803 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2804 else if (term->curs.y < term->rows - 1)
2806 if (term->cfg.lfhascr)
2808 term->wrapnext = FALSE;
2809 seen_disp_event(term);
2810 term->paste_hold = 0;
2812 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2814 case '\t': /* HT: Character tabulation */
2816 pos old_curs = term->curs;
2817 termline *ldata = scrlineptr(term->curs.y);
2821 } while (term->curs.x < term->cols - 1 &&
2822 !term->tabs[term->curs.x]);
2824 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2825 if (term->curs.x >= term->cols / 2)
2826 term->curs.x = term->cols / 2 - 1;
2828 if (term->curs.x >= term->cols)
2829 term->curs.x = term->cols - 1;
2832 check_selection(term, old_curs, term->curs);
2834 seen_disp_event(term);
2838 switch (term->termstate) {
2840 /* Only graphic characters get this far;
2841 * ctrls are stripped above */
2843 termline *cline = scrlineptr(term->curs.y);
2848 width = (term->cfg.cjk_ambig_wide ?
2849 wcwidth_cjk((wchar_t) c) :
2850 wcwidth((wchar_t) c));
2852 if (term->wrapnext && term->wrap && width > 0) {
2853 cline->lattr |= LATTR_WRAPPED;
2854 if (term->curs.y == term->marg_b)
2855 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2856 else if (term->curs.y < term->rows - 1)
2859 term->wrapnext = FALSE;
2860 cline = scrlineptr(term->curs.y);
2862 if (term->insert && width > 0)
2864 if (term->selstate != NO_SELECTION) {
2865 pos cursplus = term->curs;
2867 check_selection(term, term->curs, cursplus);
2869 if (((c & CSET_MASK) == CSET_ASCII ||
2870 (c & CSET_MASK) == 0) &&
2872 logtraffic(term->logctx, (unsigned char) c,
2878 * If we're about to display a double-width
2879 * character starting in the rightmost
2880 * column, then we do something special
2881 * instead. We must print a space in the
2882 * last column of the screen, then wrap;
2883 * and we also set LATTR_WRAPPED2 which
2884 * instructs subsequent cut-and-pasting not
2885 * only to splice this line to the one
2886 * after it, but to ignore the space in the
2887 * last character position as well.
2888 * (Because what was actually output to the
2889 * terminal was presumably just a sequence
2890 * of CJK characters, and we don't want a
2891 * space to be pasted in the middle of
2892 * those just because they had the
2893 * misfortune to start in the wrong parity
2894 * column. xterm concurs.)
2896 check_boundary(term, term->curs.x, term->curs.y);
2897 check_boundary(term, term->curs.x+2, term->curs.y);
2898 if (term->curs.x == term->cols-1) {
2899 copy_termchar(cline, term->curs.x,
2901 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2902 if (term->curs.y == term->marg_b)
2903 scroll(term, term->marg_t, term->marg_b,
2905 else if (term->curs.y < term->rows - 1)
2908 cline = scrlineptr(term->curs.y);
2909 /* Now we must check_boundary again, of course. */
2910 check_boundary(term, term->curs.x, term->curs.y);
2911 check_boundary(term, term->curs.x+2, term->curs.y);
2915 clear_cc(cline, term->curs.x);
2916 cline->chars[term->curs.x].chr = c;
2917 cline->chars[term->curs.x].attr = term->curr_attr;
2922 clear_cc(cline, term->curs.x);
2923 cline->chars[term->curs.x].chr = UCSWIDE;
2924 cline->chars[term->curs.x].attr = term->curr_attr;
2928 check_boundary(term, term->curs.x, term->curs.y);
2929 check_boundary(term, term->curs.x+1, term->curs.y);
2932 clear_cc(cline, term->curs.x);
2933 cline->chars[term->curs.x].chr = c;
2934 cline->chars[term->curs.x].attr = term->curr_attr;
2938 if (term->curs.x > 0) {
2939 int x = term->curs.x - 1;
2941 /* If we're in wrapnext state, the character
2942 * to combine with is _here_, not to our left. */
2947 * If the previous character is
2948 * UCSWIDE, back up another one.
2950 if (cline->chars[x].chr == UCSWIDE) {
2955 add_cc(cline, x, c);
2956 seen_disp_event(term);
2963 if (term->curs.x == term->cols) {
2965 term->wrapnext = TRUE;
2966 if (term->wrap && term->vt52_mode) {
2967 cline->lattr |= LATTR_WRAPPED;
2968 if (term->curs.y == term->marg_b)
2969 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2970 else if (term->curs.y < term->rows - 1)
2973 term->wrapnext = FALSE;
2976 seen_disp_event(term);
2982 * This state is virtually identical to SEEN_ESC, with the
2983 * exception that we have an OSC sequence in the pipeline,
2984 * and _if_ we see a backslash, we process it.
2988 term->termstate = TOPLEVEL;
2991 /* else fall through */
2993 if (c >= ' ' && c <= '/') {
2994 if (term->esc_query)
2995 term->esc_query = -1;
2997 term->esc_query = c;
3000 term->termstate = TOPLEVEL;
3001 switch (ANSI(c, term->esc_query)) {
3002 case '[': /* enter CSI mode */
3003 term->termstate = SEEN_CSI;
3004 term->esc_nargs = 1;
3005 term->esc_args[0] = ARG_DEFAULT;
3006 term->esc_query = FALSE;
3008 case ']': /* OSC: xterm escape sequences */
3009 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3010 compatibility(OTHER);
3011 term->termstate = SEEN_OSC;
3012 term->esc_args[0] = 0;
3014 case '7': /* DECSC: save cursor */
3015 compatibility(VT100);
3016 save_cursor(term, TRUE);
3018 case '8': /* DECRC: restore cursor */
3019 compatibility(VT100);
3020 save_cursor(term, FALSE);
3021 seen_disp_event(term);
3023 case '=': /* DECKPAM: Keypad application mode */
3024 compatibility(VT100);
3025 term->app_keypad_keys = TRUE;
3027 case '>': /* DECKPNM: Keypad numeric mode */
3028 compatibility(VT100);
3029 term->app_keypad_keys = FALSE;
3031 case 'D': /* IND: exactly equivalent to LF */
3032 compatibility(VT100);
3033 if (term->curs.y == term->marg_b)
3034 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3035 else if (term->curs.y < term->rows - 1)
3037 term->wrapnext = FALSE;
3038 seen_disp_event(term);
3040 case 'E': /* NEL: exactly equivalent to CR-LF */
3041 compatibility(VT100);
3043 if (term->curs.y == term->marg_b)
3044 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3045 else if (term->curs.y < term->rows - 1)
3047 term->wrapnext = FALSE;
3048 seen_disp_event(term);
3050 case 'M': /* RI: reverse index - backwards LF */
3051 compatibility(VT100);
3052 if (term->curs.y == term->marg_t)
3053 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3054 else if (term->curs.y > 0)
3056 term->wrapnext = FALSE;
3057 seen_disp_event(term);
3059 case 'Z': /* DECID: terminal type query */
3060 compatibility(VT100);
3062 ldisc_send(term->ldisc, term->id_string,
3063 strlen(term->id_string), 0);
3065 case 'c': /* RIS: restore power-on settings */
3066 compatibility(VT100);
3068 if (term->ldisc) /* cause ldisc to notice changes */
3069 ldisc_send(term->ldisc, NULL, 0, 0);
3070 if (term->reset_132) {
3071 if (!term->cfg.no_remote_resize)
3072 request_resize(term->frontend, 80, term->rows);
3073 term->reset_132 = 0;
3076 seen_disp_event(term);
3078 case 'H': /* HTS: set a tab */
3079 compatibility(VT100);
3080 term->tabs[term->curs.x] = TRUE;
3083 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3084 compatibility(VT100);
3090 for (i = 0; i < term->rows; i++) {
3091 ldata = scrlineptr(i);
3092 for (j = 0; j < term->cols; j++) {
3093 copy_termchar(ldata, j,
3094 &term->basic_erase_char);
3095 ldata->chars[j].chr = 'E';
3097 ldata->lattr = LATTR_NORM;
3100 seen_disp_event(term);
3101 scrtop.x = scrtop.y = 0;
3103 scrbot.y = term->rows;
3104 check_selection(term, scrtop, scrbot);
3108 case ANSI('3', '#'):
3109 case ANSI('4', '#'):
3110 case ANSI('5', '#'):
3111 case ANSI('6', '#'):
3112 compatibility(VT100);
3116 switch (ANSI(c, term->esc_query)) {
3117 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3120 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3123 case ANSI('5', '#'): /* DECSWL: normal */
3124 nlattr = LATTR_NORM;
3126 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3127 nlattr = LATTR_WIDE;
3130 scrlineptr(term->curs.y)->lattr = nlattr;
3133 /* GZD4: G0 designate 94-set */
3134 case ANSI('A', '('):
3135 compatibility(VT100);
3136 if (!term->cfg.no_remote_charset)
3137 term->cset_attr[0] = CSET_GBCHR;
3139 case ANSI('B', '('):
3140 compatibility(VT100);
3141 if (!term->cfg.no_remote_charset)
3142 term->cset_attr[0] = CSET_ASCII;
3144 case ANSI('0', '('):
3145 compatibility(VT100);
3146 if (!term->cfg.no_remote_charset)
3147 term->cset_attr[0] = CSET_LINEDRW;
3149 case ANSI('U', '('):
3150 compatibility(OTHER);
3151 if (!term->cfg.no_remote_charset)
3152 term->cset_attr[0] = CSET_SCOACS;
3154 /* G1D4: G1-designate 94-set */
3155 case ANSI('A', ')'):
3156 compatibility(VT100);
3157 if (!term->cfg.no_remote_charset)
3158 term->cset_attr[1] = CSET_GBCHR;
3160 case ANSI('B', ')'):
3161 compatibility(VT100);
3162 if (!term->cfg.no_remote_charset)
3163 term->cset_attr[1] = CSET_ASCII;
3165 case ANSI('0', ')'):
3166 compatibility(VT100);
3167 if (!term->cfg.no_remote_charset)
3168 term->cset_attr[1] = CSET_LINEDRW;
3170 case ANSI('U', ')'):
3171 compatibility(OTHER);
3172 if (!term->cfg.no_remote_charset)
3173 term->cset_attr[1] = CSET_SCOACS;
3175 /* DOCS: Designate other coding system */
3176 case ANSI('8', '%'): /* Old Linux code */
3177 case ANSI('G', '%'):
3178 compatibility(OTHER);
3179 if (!term->cfg.no_remote_charset)
3182 case ANSI('@', '%'):
3183 compatibility(OTHER);
3184 if (!term->cfg.no_remote_charset)
3190 term->termstate = TOPLEVEL; /* default */
3192 if (term->esc_nargs <= ARGS_MAX) {
3193 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3194 term->esc_args[term->esc_nargs - 1] = 0;
3195 term->esc_args[term->esc_nargs - 1] =
3196 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3198 term->termstate = SEEN_CSI;
3199 } else if (c == ';') {
3200 if (++term->esc_nargs <= ARGS_MAX)
3201 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3202 term->termstate = SEEN_CSI;
3203 } else if (c < '@') {
3204 if (term->esc_query)
3205 term->esc_query = -1;
3207 term->esc_query = TRUE;
3209 term->esc_query = c;
3210 term->termstate = SEEN_CSI;
3212 switch (ANSI(c, term->esc_query)) {
3213 case 'A': /* CUU: move up N lines */
3214 move(term, term->curs.x,
3215 term->curs.y - def(term->esc_args[0], 1), 1);
3216 seen_disp_event(term);
3218 case 'e': /* VPR: move down N lines */
3219 compatibility(ANSI);
3221 case 'B': /* CUD: Cursor down */
3222 move(term, term->curs.x,
3223 term->curs.y + def(term->esc_args[0], 1), 1);
3224 seen_disp_event(term);
3226 case ANSI('c', '>'): /* DA: report xterm version */
3227 compatibility(OTHER);
3228 /* this reports xterm version 136 so that VIM can
3229 use the drag messages from the mouse reporting */
3231 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3233 case 'a': /* HPR: move right N cols */
3234 compatibility(ANSI);
3236 case 'C': /* CUF: Cursor right */
3237 move(term, term->curs.x + def(term->esc_args[0], 1),
3239 seen_disp_event(term);
3241 case 'D': /* CUB: move left N cols */
3242 move(term, term->curs.x - def(term->esc_args[0], 1),
3244 seen_disp_event(term);
3246 case 'E': /* CNL: move down N lines and CR */
3247 compatibility(ANSI);
3249 term->curs.y + def(term->esc_args[0], 1), 1);
3250 seen_disp_event(term);
3252 case 'F': /* CPL: move up N lines and CR */
3253 compatibility(ANSI);
3255 term->curs.y - def(term->esc_args[0], 1), 1);
3256 seen_disp_event(term);
3259 case '`': /* HPA: set horizontal posn */
3260 compatibility(ANSI);
3261 move(term, def(term->esc_args[0], 1) - 1,
3263 seen_disp_event(term);
3265 case 'd': /* VPA: set vertical posn */
3266 compatibility(ANSI);
3267 move(term, term->curs.x,
3268 ((term->dec_om ? term->marg_t : 0) +
3269 def(term->esc_args[0], 1) - 1),
3270 (term->dec_om ? 2 : 0));
3271 seen_disp_event(term);
3274 case 'f': /* HVP: set horz and vert posns at once */
3275 if (term->esc_nargs < 2)
3276 term->esc_args[1] = ARG_DEFAULT;
3277 move(term, def(term->esc_args[1], 1) - 1,
3278 ((term->dec_om ? term->marg_t : 0) +
3279 def(term->esc_args[0], 1) - 1),
3280 (term->dec_om ? 2 : 0));
3281 seen_disp_event(term);
3283 case 'J': /* ED: erase screen or parts of it */
3285 unsigned int i = def(term->esc_args[0], 0) + 1;
3288 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3291 seen_disp_event(term);
3293 case 'K': /* EL: erase line or parts of it */
3295 unsigned int i = def(term->esc_args[0], 0) + 1;
3298 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3300 seen_disp_event(term);
3302 case 'L': /* IL: insert lines */
3303 compatibility(VT102);
3304 if (term->curs.y <= term->marg_b)
3305 scroll(term, term->curs.y, term->marg_b,
3306 -def(term->esc_args[0], 1), FALSE);
3307 seen_disp_event(term);
3309 case 'M': /* DL: delete lines */
3310 compatibility(VT102);
3311 if (term->curs.y <= term->marg_b)
3312 scroll(term, term->curs.y, term->marg_b,
3313 def(term->esc_args[0], 1),
3315 seen_disp_event(term);
3317 case '@': /* ICH: insert chars */
3318 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3319 compatibility(VT102);
3320 insch(term, def(term->esc_args[0], 1));
3321 seen_disp_event(term);
3323 case 'P': /* DCH: delete chars */
3324 compatibility(VT102);
3325 insch(term, -def(term->esc_args[0], 1));
3326 seen_disp_event(term);
3328 case 'c': /* DA: terminal type query */
3329 compatibility(VT100);
3330 /* This is the response for a VT102 */
3332 ldisc_send(term->ldisc, term->id_string,
3333 strlen(term->id_string), 0);
3335 case 'n': /* DSR: cursor position query */
3337 if (term->esc_args[0] == 6) {
3339 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3341 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3342 } else if (term->esc_args[0] == 5) {
3343 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3347 case 'h': /* SM: toggle modes to high */
3349 compatibility(VT100);
3352 for (i = 0; i < term->esc_nargs; i++)
3353 toggle_mode(term, term->esc_args[i],
3354 term->esc_query, TRUE);
3357 case 'i': /* MC: Media copy */
3359 compatibility(VT100);
3361 if (term->esc_nargs != 1) break;
3362 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3363 term->printing = TRUE;
3364 term->only_printing = !term->esc_query;
3365 term->print_state = 0;
3366 term_print_setup(term);
3367 } else if (term->esc_args[0] == 4 &&
3369 term_print_finish(term);
3373 case 'l': /* RM: toggle modes to low */
3375 compatibility(VT100);
3378 for (i = 0; i < term->esc_nargs; i++)
3379 toggle_mode(term, term->esc_args[i],
3380 term->esc_query, FALSE);
3383 case 'g': /* TBC: clear tabs */
3384 compatibility(VT100);
3385 if (term->esc_nargs == 1) {
3386 if (term->esc_args[0] == 0) {
3387 term->tabs[term->curs.x] = FALSE;
3388 } else if (term->esc_args[0] == 3) {
3390 for (i = 0; i < term->cols; i++)
3391 term->tabs[i] = FALSE;
3395 case 'r': /* DECSTBM: set scroll margins */
3396 compatibility(VT100);
3397 if (term->esc_nargs <= 2) {
3399 top = def(term->esc_args[0], 1) - 1;
3400 bot = (term->esc_nargs <= 1
3401 || term->esc_args[1] == 0 ?
3403 def(term->esc_args[1], term->rows)) - 1;
3404 if (bot >= term->rows)
3405 bot = term->rows - 1;
3406 /* VTTEST Bug 9 - if region is less than 2 lines
3407 * don't change region.
3409 if (bot - top > 0) {
3414 * I used to think the cursor should be
3415 * placed at the top of the newly marginned
3416 * area. Apparently not: VMS TPU falls over
3419 * Well actually it should for
3422 term->curs.y = (term->dec_om ?
3424 seen_disp_event(term);
3428 case 'm': /* SGR: set graphics rendition */
3431 * A VT100 without the AVO only had one
3432 * attribute, either underline or
3433 * reverse video depending on the
3434 * cursor type, this was selected by
3438 * This is sometimes DIM, eg on the
3441 * This is sometimes INVIS various ANSI.
3443 * This like 22 disables BOLD, DIM and INVIS
3445 * The ANSI colours appear on any
3446 * terminal that has colour (obviously)
3447 * but the interaction between sgr0 and
3448 * the colours varies but is usually
3449 * related to the background colour
3450 * erase item. The interaction between
3451 * colour attributes and the mono ones
3452 * is also very implementation
3455 * The 39 and 49 attributes are likely
3456 * to be unimplemented.
3459 for (i = 0; i < term->esc_nargs; i++) {
3460 switch (def(term->esc_args[i], 0)) {
3461 case 0: /* restore defaults */
3462 term->curr_attr = term->default_attr;
3464 case 1: /* enable bold */
3465 compatibility(VT100AVO);
3466 term->curr_attr |= ATTR_BOLD;
3468 case 21: /* (enable double underline) */
3469 compatibility(OTHER);
3470 case 4: /* enable underline */
3471 compatibility(VT100AVO);
3472 term->curr_attr |= ATTR_UNDER;
3474 case 5: /* enable blink */
3475 compatibility(VT100AVO);
3476 term->curr_attr |= ATTR_BLINK;
3478 case 6: /* SCO light bkgrd */
3479 compatibility(SCOANSI);
3480 term->blink_is_real = FALSE;
3481 term->curr_attr |= ATTR_BLINK;
3482 term_schedule_tblink(term);
3484 case 7: /* enable reverse video */
3485 term->curr_attr |= ATTR_REVERSE;
3487 case 10: /* SCO acs off */
3488 compatibility(SCOANSI);
3489 if (term->cfg.no_remote_charset) break;
3490 term->sco_acs = 0; break;
3491 case 11: /* SCO acs on */
3492 compatibility(SCOANSI);
3493 if (term->cfg.no_remote_charset) break;
3494 term->sco_acs = 1; break;
3495 case 12: /* SCO acs on, |0x80 */
3496 compatibility(SCOANSI);
3497 if (term->cfg.no_remote_charset) break;
3498 term->sco_acs = 2; break;
3499 case 22: /* disable bold */
3500 compatibility2(OTHER, VT220);
3501 term->curr_attr &= ~ATTR_BOLD;
3503 case 24: /* disable underline */
3504 compatibility2(OTHER, VT220);
3505 term->curr_attr &= ~ATTR_UNDER;
3507 case 25: /* disable blink */
3508 compatibility2(OTHER, VT220);
3509 term->curr_attr &= ~ATTR_BLINK;
3511 case 27: /* disable reverse video */
3512 compatibility2(OTHER, VT220);
3513 term->curr_attr &= ~ATTR_REVERSE;
3524 term->curr_attr &= ~ATTR_FGMASK;
3526 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3536 /* aixterm-style bright foreground */
3537 term->curr_attr &= ~ATTR_FGMASK;
3539 ((term->esc_args[i] - 90 + 8)
3542 case 39: /* default-foreground */
3543 term->curr_attr &= ~ATTR_FGMASK;
3544 term->curr_attr |= ATTR_DEFFG;
3555 term->curr_attr &= ~ATTR_BGMASK;
3557 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3567 /* aixterm-style bright background */
3568 term->curr_attr &= ~ATTR_BGMASK;
3570 ((term->esc_args[i] - 100 + 8)
3573 case 49: /* default-background */
3574 term->curr_attr &= ~ATTR_BGMASK;
3575 term->curr_attr |= ATTR_DEFBG;
3577 case 38: /* xterm 256-colour mode */
3578 if (i+2 < term->esc_nargs &&
3579 term->esc_args[i+1] == 5) {
3580 term->curr_attr &= ~ATTR_FGMASK;
3582 ((term->esc_args[i+2] & 0xFF)
3587 case 48: /* xterm 256-colour mode */
3588 if (i+2 < term->esc_nargs &&
3589 term->esc_args[i+1] == 5) {
3590 term->curr_attr &= ~ATTR_BGMASK;
3592 ((term->esc_args[i+2] & 0xFF)
3599 set_erase_char(term);
3602 case 's': /* save cursor */
3603 save_cursor(term, TRUE);
3605 case 'u': /* restore cursor */
3606 save_cursor(term, FALSE);
3607 seen_disp_event(term);
3609 case 't': /* DECSLPP: set page size - ie window height */
3611 * VT340/VT420 sequence DECSLPP, DEC only allows values
3612 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3613 * illegal values (eg first arg 1..9) for window changing
3616 if (term->esc_nargs <= 1
3617 && (term->esc_args[0] < 1 ||
3618 term->esc_args[0] >= 24)) {
3619 compatibility(VT340TEXT);
3620 if (!term->cfg.no_remote_resize)
3621 request_resize(term->frontend, term->cols,
3622 def(term->esc_args[0], 24));
3624 } else if (term->esc_nargs >= 1 &&
3625 term->esc_args[0] >= 1 &&
3626 term->esc_args[0] < 24) {
3627 compatibility(OTHER);
3629 switch (term->esc_args[0]) {
3633 set_iconic(term->frontend, FALSE);
3636 set_iconic(term->frontend, TRUE);
3639 if (term->esc_nargs >= 3) {
3640 if (!term->cfg.no_remote_resize)
3641 move_window(term->frontend,
3642 def(term->esc_args[1], 0),
3643 def(term->esc_args[2], 0));
3647 /* We should resize the window to a given
3648 * size in pixels here, but currently our
3649 * resizing code isn't healthy enough to
3654 set_zorder(term->frontend, TRUE);
3657 /* move to bottom */
3658 set_zorder(term->frontend, FALSE);
3661 refresh_window(term->frontend);
3664 if (term->esc_nargs >= 3) {
3665 if (!term->cfg.no_remote_resize)
3666 request_resize(term->frontend,
3667 def(term->esc_args[2], term->cfg.width),
3668 def(term->esc_args[1], term->cfg.height));
3672 if (term->esc_nargs >= 2)
3673 set_zoomed(term->frontend,
3679 ldisc_send(term->ldisc,
3680 is_iconic(term->frontend) ?
3681 "\033[1t" : "\033[2t", 4, 0);
3685 get_window_pos(term->frontend, &x, &y);
3686 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3687 ldisc_send(term->ldisc, buf, len, 0);
3692 get_window_pixels(term->frontend, &x, &y);
3693 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3694 ldisc_send(term->ldisc, buf, len, 0);
3699 len = sprintf(buf, "\033[8;%d;%dt",
3700 term->rows, term->cols);
3701 ldisc_send(term->ldisc, buf, len, 0);
3706 * Hmmm. Strictly speaking we
3707 * should return `the size of the
3708 * screen in characters', but
3709 * that's not easy: (a) window
3710 * furniture being what it is it's
3711 * hard to compute, and (b) in
3712 * resize-font mode maximising the
3713 * window wouldn't change the
3714 * number of characters. *shrug*. I
3715 * think we'll ignore it for the
3716 * moment and see if anyone
3717 * complains, and then ask them
3718 * what they would like it to do.
3723 !term->cfg.no_remote_qtitle) {
3724 p = get_window_title(term->frontend, TRUE);
3726 ldisc_send(term->ldisc, "\033]L", 3, 0);
3727 ldisc_send(term->ldisc, p, len, 0);
3728 ldisc_send(term->ldisc, "\033\\", 2, 0);
3733 !term->cfg.no_remote_qtitle) {
3734 p = get_window_title(term->frontend,FALSE);
3736 ldisc_send(term->ldisc, "\033]l", 3, 0);
3737 ldisc_send(term->ldisc, p, len, 0);
3738 ldisc_send(term->ldisc, "\033\\", 2, 0);
3744 case 'S': /* SU: Scroll up */
3745 compatibility(SCOANSI);
3746 scroll(term, term->marg_t, term->marg_b,
3747 def(term->esc_args[0], 1), TRUE);
3748 term->wrapnext = FALSE;
3749 seen_disp_event(term);
3751 case 'T': /* SD: Scroll down */
3752 compatibility(SCOANSI);
3753 scroll(term, term->marg_t, term->marg_b,
3754 -def(term->esc_args[0], 1), TRUE);
3755 term->wrapnext = FALSE;
3756 seen_disp_event(term);
3758 case ANSI('|', '*'): /* DECSNLS */
3760 * Set number of lines on screen
3761 * VT420 uses VGA like hardware and can
3762 * support any size in reasonable range
3763 * (24..49 AIUI) with no default specified.
3765 compatibility(VT420);
3766 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3767 if (!term->cfg.no_remote_resize)
3768 request_resize(term->frontend, term->cols,
3769 def(term->esc_args[0],
3774 case ANSI('|', '$'): /* DECSCPP */
3776 * Set number of columns per page
3777 * Docs imply range is only 80 or 132, but
3780 compatibility(VT340TEXT);
3781 if (term->esc_nargs <= 1) {
3782 if (!term->cfg.no_remote_resize)
3783 request_resize(term->frontend,
3784 def(term->esc_args[0],
3785 term->cfg.width), term->rows);
3789 case 'X': /* ECH: write N spaces w/o moving cursor */
3790 /* XXX VTTEST says this is vt220, vt510 manual
3792 compatibility(ANSIMIN);
3794 int n = def(term->esc_args[0], 1);
3796 int p = term->curs.x;
3797 termline *cline = scrlineptr(term->curs.y);
3799 if (n > term->cols - term->curs.x)
3800 n = term->cols - term->curs.x;
3801 cursplus = term->curs;
3803 check_boundary(term, term->curs.x, term->curs.y);
3804 check_boundary(term, term->curs.x+n, term->curs.y);
3805 check_selection(term, term->curs, cursplus);
3807 copy_termchar(cline, p++,
3809 seen_disp_event(term);
3812 case 'x': /* DECREQTPARM: report terminal characteristics */
3813 compatibility(VT100);
3816 int i = def(term->esc_args[0], 0);
3817 if (i == 0 || i == 1) {
3818 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3820 ldisc_send(term->ldisc, buf, 20, 0);
3825 compatibility(OTHER);
3827 int i = def(term->esc_args[0], 1);
3828 pos old_curs = term->curs;
3830 for(;i>0 && term->curs.x>0; i--) {
3833 } while (term->curs.x >0 &&
3834 !term->tabs[term->curs.x]);
3836 check_selection(term, old_curs, term->curs);
3839 case ANSI('c', '='): /* Hide or Show Cursor */
3840 compatibility(SCOANSI);
3841 switch(term->esc_args[0]) {
3842 case 0: /* hide cursor */
3843 term->cursor_on = FALSE;
3845 case 1: /* restore cursor */
3846 term->big_cursor = FALSE;
3847 term->cursor_on = TRUE;
3849 case 2: /* block cursor */
3850 term->big_cursor = TRUE;
3851 term->cursor_on = TRUE;
3855 case ANSI('C', '='):
3857 * set cursor start on scanline esc_args[0] and
3858 * end on scanline esc_args[1].If you set
3859 * the bottom scan line to a value less than
3860 * the top scan line, the cursor will disappear.
3862 compatibility(SCOANSI);
3863 if (term->esc_nargs >= 2) {
3864 if (term->esc_args[0] > term->esc_args[1])
3865 term->cursor_on = FALSE;
3867 term->cursor_on = TRUE;
3870 case ANSI('D', '='):
3871 compatibility(SCOANSI);
3872 term->blink_is_real = FALSE;
3873 term_schedule_tblink(term);
3874 if (term->esc_args[0]>=1)
3875 term->curr_attr |= ATTR_BLINK;
3877 term->curr_attr &= ~ATTR_BLINK;
3879 case ANSI('E', '='):
3880 compatibility(SCOANSI);
3881 term->blink_is_real = (term->esc_args[0] >= 1);
3882 term_schedule_tblink(term);
3884 case ANSI('F', '='): /* set normal foreground */
3885 compatibility(SCOANSI);
3886 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3888 (sco2ansicolour[term->esc_args[0] & 0x7] |
3889 (term->esc_args[0] & 0x8)) <<
3891 term->curr_attr &= ~ATTR_FGMASK;
3892 term->curr_attr |= colour;
3893 term->default_attr &= ~ATTR_FGMASK;
3894 term->default_attr |= colour;
3897 case ANSI('G', '='): /* set normal background */
3898 compatibility(SCOANSI);
3899 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3901 (sco2ansicolour[term->esc_args[0] & 0x7] |
3902 (term->esc_args[0] & 0x8)) <<
3904 term->curr_attr &= ~ATTR_BGMASK;
3905 term->curr_attr |= colour;
3906 term->default_attr &= ~ATTR_BGMASK;
3907 term->default_attr |= colour;
3910 case ANSI('L', '='):
3911 compatibility(SCOANSI);
3912 term->use_bce = (term->esc_args[0] <= 0);
3913 set_erase_char(term);
3915 case ANSI('p', '"'): /* DECSCL: set compat level */
3917 * Allow the host to make this emulator a
3918 * 'perfect' VT102. This first appeared in
3919 * the VT220, but we do need to get back to
3920 * PuTTY mode so I won't check it.
3922 * The arg in 40..42,50 are a PuTTY extension.
3923 * The 2nd arg, 8bit vs 7bit is not checked.
3925 * Setting VT102 mode should also change
3926 * the Fkeys to generate PF* codes as a
3927 * real VT102 has no Fkeys. The VT220 does
3928 * this, F11..F13 become ESC,BS,LF other
3929 * Fkeys send nothing.
3931 * Note ESC c will NOT change this!
3934 switch (term->esc_args[0]) {
3936 term->compatibility_level &= ~TM_VTXXX;
3937 term->compatibility_level |= TM_VT102;
3940 term->compatibility_level &= ~TM_VTXXX;
3941 term->compatibility_level |= TM_VT220;
3945 if (term->esc_args[0] > 60 &&
3946 term->esc_args[0] < 70)
3947 term->compatibility_level |= TM_VTXXX;
3951 term->compatibility_level &= TM_VTXXX;
3954 term->compatibility_level = TM_PUTTY;
3957 term->compatibility_level = TM_SCOANSI;
3961 term->compatibility_level = TM_PUTTY;
3967 /* Change the response to CSI c */
3968 if (term->esc_args[0] == 50) {
3971 strcpy(term->id_string, "\033[?");
3972 for (i = 1; i < term->esc_nargs; i++) {
3974 strcat(term->id_string, ";");
3975 sprintf(lbuf, "%d", term->esc_args[i]);
3976 strcat(term->id_string, lbuf);
3978 strcat(term->id_string, "c");
3981 /* Is this a good idea ?
3982 * Well we should do a soft reset at this point ...
3984 if (!has_compat(VT420) && has_compat(VT100)) {
3985 if (!term->cfg.no_remote_resize) {
3986 if (term->reset_132)
3987 request_resize(132, 24);
3989 request_resize(80, 24);
3997 term->osc_w = FALSE;
3999 case 'P': /* Linux palette sequence */
4000 term->termstate = SEEN_OSC_P;
4001 term->osc_strlen = 0;
4003 case 'R': /* Linux palette reset */
4004 palette_reset(term->frontend);
4005 term_invalidate(term);
4006 term->termstate = TOPLEVEL;
4008 case 'W': /* word-set */
4009 term->termstate = SEEN_OSC_W;
4022 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4026 * Grotty hack to support xterm and DECterm title
4027 * sequences concurrently.
4029 if (term->esc_args[0] == 2) {
4030 term->esc_args[0] = 1;
4033 /* else fall through */
4035 term->termstate = OSC_STRING;
4036 term->osc_strlen = 0;
4041 * This OSC stuff is EVIL. It takes just one character to get into
4042 * sysline mode and it's not initially obvious how to get out.
4043 * So I've added CR and LF as string aborts.
4044 * This shouldn't effect compatibility as I believe embedded
4045 * control characters are supposed to be interpreted (maybe?)
4046 * and they don't display anything useful anyway.
4050 if (c == '\012' || c == '\015') {
4051 term->termstate = TOPLEVEL;
4052 } else if (c == 0234 || c == '\007') {
4054 * These characters terminate the string; ST and BEL
4055 * terminate the sequence and trigger instant
4056 * processing of it, whereas ESC goes back to SEEN_ESC
4057 * mode unless it is followed by \, in which case it is
4058 * synonymous with ST in the first place.
4061 term->termstate = TOPLEVEL;
4062 } else if (c == '\033')
4063 term->termstate = OSC_MAYBE_ST;
4064 else if (term->osc_strlen < OSC_STR_MAX)
4065 term->osc_string[term->osc_strlen++] = (char)c;
4069 int max = (term->osc_strlen == 0 ? 21 : 16);
4071 if ((int)c >= '0' && (int)c <= '9')
4073 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4075 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4078 term->termstate = TOPLEVEL;
4081 term->osc_string[term->osc_strlen++] = val;
4082 if (term->osc_strlen >= 7) {
4083 palette_set(term->frontend, term->osc_string[0],
4084 term->osc_string[1] * 16 + term->osc_string[2],
4085 term->osc_string[3] * 16 + term->osc_string[4],
4086 term->osc_string[5] * 16 + term->osc_string[6]);
4087 term_invalidate(term);
4088 term->termstate = TOPLEVEL;
4104 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4107 term->termstate = OSC_STRING;
4108 term->osc_strlen = 0;
4112 term->termstate = TOPLEVEL;
4113 seen_disp_event(term);
4116 move(term, term->curs.x, term->curs.y - 1, 1);
4119 move(term, term->curs.x, term->curs.y + 1, 1);
4122 move(term, term->curs.x + 1, term->curs.y, 1);
4125 move(term, term->curs.x - 1, term->curs.y, 1);
4128 * From the VT100 Manual
4129 * NOTE: The special graphics characters in the VT100
4130 * are different from those in the VT52
4132 * From VT102 manual:
4133 * 137 _ Blank - Same
4134 * 140 ` Reserved - Humm.
4135 * 141 a Solid rectangle - Similar
4136 * 142 b 1/ - Top half of fraction for the
4137 * 143 c 3/ - subscript numbers below.
4140 * 146 f Degrees - Same
4141 * 147 g Plus or minus - Same
4143 * 151 i Ellipsis (dots)
4146 * 154 l Bar at scan 0
4147 * 155 m Bar at scan 1
4148 * 156 n Bar at scan 2
4149 * 157 o Bar at scan 3 - Similar
4150 * 160 p Bar at scan 4 - Similar
4151 * 161 q Bar at scan 5 - Similar
4152 * 162 r Bar at scan 6 - Same
4153 * 163 s Bar at scan 7 - Similar
4168 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4171 term->cset_attr[term->cset = 0] = CSET_ASCII;
4174 move(term, 0, 0, 0);
4177 if (term->curs.y == 0)
4178 scroll(term, 0, term->rows - 1, -1, TRUE);
4179 else if (term->curs.y > 0)
4181 term->wrapnext = FALSE;
4184 erase_lots(term, FALSE, FALSE, TRUE);
4188 erase_lots(term, TRUE, FALSE, TRUE);
4192 /* XXX Print cursor line */
4195 /* XXX Start controller mode */
4198 /* XXX Stop controller mode */
4202 term->termstate = VT52_Y1;
4206 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4209 term->app_keypad_keys = TRUE;
4212 term->app_keypad_keys = FALSE;
4215 /* XXX This should switch to VT100 mode not current or default
4216 * VT mode. But this will only have effect in a VT220+
4219 term->vt52_mode = FALSE;
4220 term->blink_is_real = term->cfg.blinktext;
4221 term_schedule_tblink(term);
4225 /* XXX Enter auto print mode */
4228 /* XXX Exit auto print mode */
4231 /* XXX Print screen */
4237 /* compatibility(ATARI) */
4238 move(term, 0, 0, 0);
4239 erase_lots(term, FALSE, FALSE, TRUE);
4243 /* compatibility(ATARI) */
4244 if (term->curs.y <= term->marg_b)
4245 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4248 /* compatibility(ATARI) */
4249 if (term->curs.y <= term->marg_b)
4250 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4253 /* compatibility(ATARI) */
4254 term->termstate = VT52_FG;
4257 /* compatibility(ATARI) */
4258 term->termstate = VT52_BG;
4261 /* compatibility(ATARI) */
4262 erase_lots(term, FALSE, TRUE, FALSE);
4266 /* compatibility(ATARI) */
4267 term->cursor_on = TRUE;
4270 /* compatibility(ATARI) */
4271 term->cursor_on = FALSE;
4273 /* case 'j': Save cursor position - broken on ST */
4274 /* case 'k': Restore cursor position */
4276 /* compatibility(ATARI) */
4277 erase_lots(term, TRUE, TRUE, TRUE);
4279 term->wrapnext = FALSE;
4282 /* compatibility(ATARI) */
4283 erase_lots(term, TRUE, TRUE, FALSE);
4286 /* compatibility(ATARI) */
4287 term->curr_attr |= ATTR_REVERSE;
4290 /* compatibility(ATARI) */
4291 term->curr_attr &= ~ATTR_REVERSE;
4293 case 'v': /* wrap Autowrap on - Wyse style */
4294 /* compatibility(ATARI) */
4297 case 'w': /* Autowrap off */
4298 /* compatibility(ATARI) */
4303 /* compatibility(OTHER) */
4304 term->vt52_bold = FALSE;
4305 term->curr_attr = ATTR_DEFAULT;
4306 set_erase_char(term);
4309 /* compatibility(VI50) */
4310 term->curr_attr |= ATTR_UNDER;
4313 /* compatibility(VI50) */
4314 term->curr_attr &= ~ATTR_UNDER;
4317 /* compatibility(VI50) */
4318 term->vt52_bold = TRUE;
4319 term->curr_attr |= ATTR_BOLD;
4322 /* compatibility(VI50) */
4323 term->vt52_bold = FALSE;
4324 term->curr_attr &= ~ATTR_BOLD;
4330 term->termstate = VT52_Y2;
4331 move(term, term->curs.x, c - ' ', 0);
4334 term->termstate = TOPLEVEL;
4335 move(term, c - ' ', term->curs.y, 0);
4340 term->termstate = TOPLEVEL;
4341 term->curr_attr &= ~ATTR_FGMASK;
4342 term->curr_attr &= ~ATTR_BOLD;
4343 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4344 set_erase_char(term);
4347 term->termstate = TOPLEVEL;
4348 term->curr_attr &= ~ATTR_BGMASK;
4349 term->curr_attr &= ~ATTR_BLINK;
4350 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4351 set_erase_char(term);
4354 default: break; /* placate gcc warning about enum use */
4356 if (term->selstate != NO_SELECTION) {
4357 pos cursplus = term->curs;
4359 check_selection(term, term->curs, cursplus);
4363 term_print_flush(term);
4364 if (term->cfg.logflush)
4365 logflush(term->logctx);
4369 * To prevent having to run the reasonably tricky bidi algorithm
4370 * too many times, we maintain a cache of the last lineful of data
4371 * fed to the algorithm on each line of the display.
4373 static int term_bidi_cache_hit(Terminal *term, int line,
4374 termchar *lbefore, int width)
4378 if (!term->pre_bidi_cache)
4379 return FALSE; /* cache doesn't even exist yet! */
4381 if (line >= term->bidi_cache_size)
4382 return FALSE; /* cache doesn't have this many lines */
4384 if (!term->pre_bidi_cache[line].chars)
4385 return FALSE; /* cache doesn't contain _this_ line */
4387 if (term->pre_bidi_cache[line].width != width)
4388 return FALSE; /* line is wrong width */
4390 for (i = 0; i < width; i++)
4391 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4392 return FALSE; /* line doesn't match cache */
4394 return TRUE; /* it didn't match. */
4397 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4398 termchar *lafter, bidi_char *wcTo,
4399 int width, int size)
4403 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4404 int j = term->bidi_cache_size;
4405 term->bidi_cache_size = line+1;
4406 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4407 term->bidi_cache_size,
4408 struct bidi_cache_entry);
4409 term->post_bidi_cache = sresize(term->post_bidi_cache,
4410 term->bidi_cache_size,
4411 struct bidi_cache_entry);
4412 while (j < term->bidi_cache_size) {
4413 term->pre_bidi_cache[j].chars =
4414 term->post_bidi_cache[j].chars = NULL;
4415 term->pre_bidi_cache[j].width =
4416 term->post_bidi_cache[j].width = -1;
4417 term->pre_bidi_cache[j].forward =
4418 term->post_bidi_cache[j].forward = NULL;
4419 term->pre_bidi_cache[j].backward =
4420 term->post_bidi_cache[j].backward = NULL;
4425 sfree(term->pre_bidi_cache[line].chars);
4426 sfree(term->post_bidi_cache[line].chars);
4427 sfree(term->post_bidi_cache[line].forward);
4428 sfree(term->post_bidi_cache[line].backward);
4430 term->pre_bidi_cache[line].width = width;
4431 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4432 term->post_bidi_cache[line].width = width;
4433 term->post_bidi_cache[line].chars = snewn(size, termchar);
4434 term->post_bidi_cache[line].forward = snewn(width, int);
4435 term->post_bidi_cache[line].backward = snewn(width, int);
4437 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4438 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4439 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4440 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4442 for (i = 0; i < width; i++) {
4443 int p = wcTo[i].index;
4445 assert(0 <= p && p < width);
4447 term->post_bidi_cache[line].backward[i] = p;
4448 term->post_bidi_cache[line].forward[p] = i;
4453 * Prepare the bidi information for a screen line. Returns the
4454 * transformed list of termchars, or NULL if no transformation at
4455 * all took place (because bidi is disabled). If return was
4456 * non-NULL, auxiliary information such as the forward and reverse
4457 * mappings of permutation position are available in
4458 * term->post_bidi_cache[scr_y].*.
4460 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4466 /* Do Arabic shaping and bidi. */
4467 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4469 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4471 if (term->wcFromTo_size < term->cols) {
4472 term->wcFromTo_size = term->cols;
4473 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4475 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4479 for(it=0; it<term->cols ; it++)
4481 unsigned long uc = (ldata->chars[it].chr);
4483 switch (uc & CSET_MASK) {
4485 if (!term->cfg.rawcnp) {
4486 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4490 uc = term->ucsdata->unitab_line[uc & 0xFF];
4493 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4496 switch (uc & CSET_MASK) {
4498 uc = term->ucsdata->unitab_font[uc & 0xFF];
4501 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4505 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4507 term->wcFrom[it].index = it;
4511 do_bidi(term->wcFrom, term->cols);
4513 /* this is saved iff done from inside the shaping */
4514 if(!term->cfg.bidi && term->cfg.arabicshaping)
4515 for(it=0; it<term->cols; it++)
4516 term->wcTo[it] = term->wcFrom[it];
4518 if(!term->cfg.arabicshaping)
4519 do_shape(term->wcFrom, term->wcTo, term->cols);
4521 if (term->ltemp_size < ldata->size) {
4522 term->ltemp_size = ldata->size;
4523 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4527 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4529 for(it=0; it<term->cols ; it++)
4531 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4532 if (term->ltemp[it].cc_next)
4533 term->ltemp[it].cc_next -=
4534 it - term->wcTo[it].index;
4536 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4537 term->ltemp[it].chr = term->wcTo[it].wc;
4539 term_bidi_cache_store(term, scr_y, ldata->chars,
4540 term->ltemp, term->wcTo,
4541 term->cols, ldata->size);
4543 lchars = term->ltemp;
4545 lchars = term->post_bidi_cache[scr_y].chars;
4555 * Given a context, update the window. Out of paranoia, we don't
4556 * allow WM_PAINT responses to do scrolling optimisations.
4558 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4560 int i, j, our_curs_y, our_curs_x;
4565 #ifdef OPTIMISE_SCROLL
4566 struct scrollregion *sr;
4567 #endif /* OPTIMISE_SCROLL */
4571 ch = snewn(chlen, wchar_t);
4573 newline = snewn(term->cols, termchar);
4575 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4578 * screen array, disptop, scrtop,
4580 * cfg.blinkpc, blink_is_real, tblinker,
4581 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4584 /* Has the cursor position or type changed ? */
4585 if (term->cursor_on) {
4586 if (term->has_focus) {
4587 if (term->cblinker || !term->cfg.blink_cur)
4588 cursor = TATTR_ACTCURS;
4592 cursor = TATTR_PASCURS;
4594 cursor |= TATTR_RIGHTCURS;
4597 our_curs_y = term->curs.y - term->disptop;
4600 * Adjust the cursor position:
4602 * - in the case where it's resting on the right-hand half
4603 * of a CJK wide character. xterm's behaviour here,
4604 * which seems adequate to me, is to display the cursor
4605 * covering the _whole_ character, exactly as if it were
4606 * one space to the left.
4608 termline *ldata = lineptr(term->curs.y);
4611 our_curs_x = term->curs.x;
4613 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4614 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4616 lchars = ldata->chars;
4618 if (our_curs_x > 0 &&
4619 lchars[our_curs_x].chr == UCSWIDE)
4626 * If the cursor is not where it was last time we painted, and
4627 * its previous position is visible on screen, invalidate its
4628 * previous position.
4630 if (term->dispcursy >= 0 &&
4631 (term->curstype != cursor ||
4632 term->dispcursy != our_curs_y ||
4633 term->dispcursx != our_curs_x)) {
4634 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4637 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4638 dispcurs[-1].attr |= ATTR_INVALID;
4639 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4640 dispcurs[1].attr |= ATTR_INVALID;
4641 dispcurs->attr |= ATTR_INVALID;
4645 term->dispcursx = term->dispcursy = -1;
4647 #ifdef OPTIMISE_SCROLL
4649 sr = term->scrollhead;
4651 struct scrollregion *next = sr->next;
4652 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4656 term->scrollhead = term->scrolltail = NULL;
4657 #endif /* OPTIMISE_SCROLL */
4659 /* The normal screen data */
4660 for (i = 0; i < term->rows; i++) {
4663 int dirty_line, dirty_run, selected;
4664 unsigned long attr = 0, cset = 0;
4665 int updated_line = 0;
4668 int last_run_dirty = 0;
4669 int laststart, dirtyrect;
4672 scrpos.y = i + term->disptop;
4673 ldata = lineptr(scrpos.y);
4675 /* Do Arabic shaping and bidi. */
4676 lchars = term_bidi_line(term, ldata, i);
4678 backward = term->post_bidi_cache[i].backward;
4680 lchars = ldata->chars;
4685 * First loop: work along the line deciding what we want
4686 * each character cell to look like.
4688 for (j = 0; j < term->cols; j++) {
4689 unsigned long tattr, tchar;
4690 termchar *d = lchars + j;
4691 scrpos.x = backward ? backward[j] : j;
4696 if (!term->cfg.ansi_colour)
4697 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4698 ATTR_DEFFG | ATTR_DEFBG;
4700 if (!term->cfg.xterm_256_colour) {
4702 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4703 if (colour >= 16 && colour < 256)
4704 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4705 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4706 if (colour >= 16 && colour < 256)
4707 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4710 switch (tchar & CSET_MASK) {
4712 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4715 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4718 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4721 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4724 /* Video reversing things */
4725 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4726 if (term->seltype == LEXICOGRAPHIC)
4727 selected = (posle(term->selstart, scrpos) &&
4728 poslt(scrpos, term->selend));
4730 selected = (posPle(term->selstart, scrpos) &&
4731 posPlt(scrpos, term->selend));
4735 ^ (selected ? ATTR_REVERSE : 0));
4737 /* 'Real' blinking ? */
4738 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4739 if (term->has_focus && term->tblinker) {
4740 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4742 tattr &= ~ATTR_BLINK;
4746 * Check the font we'll _probably_ be using to see if
4747 * the character is wide when we don't want it to be.
4749 if (tchar != term->disptext[i]->chars[j].chr ||
4750 tattr != (term->disptext[i]->chars[j].attr &~
4751 (ATTR_NARROW | DATTR_MASK))) {
4752 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4753 tattr |= ATTR_NARROW;
4754 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4755 tattr |= ATTR_NARROW;
4757 if (i == our_curs_y && j == our_curs_x) {
4759 term->curstype = cursor;
4760 term->dispcursx = j;
4761 term->dispcursy = i;
4765 newline[j].attr = tattr;
4766 newline[j].chr = tchar;
4767 /* Combining characters are still read from lchars */
4768 newline[j].cc_next = 0;
4772 * Now loop over the line again, noting where things have
4775 * During this loop, we keep track of where we last saw
4776 * DATTR_STARTRUN. Any mismatch automatically invalidates
4777 * _all_ of the containing run that was last printed: that
4778 * is, any rectangle that was drawn in one go in the
4779 * previous update should be either left completely alone
4780 * or overwritten in its entirety. This, along with the
4781 * expectation that front ends clip all text runs to their
4782 * bounding rectangle, should solve any possible problems
4783 * with fonts that overflow their character cells.
4787 for (j = 0; j < term->cols; j++) {
4788 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
4793 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
4794 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
4795 != newline[j].attr) {
4798 for (k = laststart; k < j; k++)
4799 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
4805 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4809 * Finally, loop once more and actually do the drawing.
4811 dirty_run = dirty_line = (ldata->lattr !=
4812 term->disptext[i]->lattr);
4813 term->disptext[i]->lattr = ldata->lattr;
4815 for (j = 0; j < term->cols; j++) {
4816 unsigned long tattr, tchar;
4817 int break_run, do_copy;
4818 termchar *d = lchars + j;
4820 tattr = newline[j].attr;
4821 tchar = newline[j].chr;
4823 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4826 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4828 /* Special hack for VT100 Linedraw glyphs */
4829 if (tchar >= 0x23BA && tchar <= 0x23BD)
4833 * Separate out sequences of characters that have the
4834 * same CSET, if that CSET is a magic one.
4836 if (CSET_OF(tchar) != cset)
4840 * Break on both sides of any combined-character cell.
4842 if (d->cc_next != 0 ||
4843 (j > 0 && d[-1].cc_next != 0))
4846 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4847 if (term->disptext[i]->chars[j].chr == tchar &&
4848 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
4850 else if (!dirty_run && ccount == 1)
4855 if ((dirty_run || last_run_dirty) && ccount > 0) {
4856 do_text(ctx, start, i, ch, ccount, attr,
4858 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4859 do_cursor(ctx, start, i, ch, ccount, attr,
4867 cset = CSET_OF(tchar);
4868 if (term->ucsdata->dbcs_screenfont)
4869 last_run_dirty = dirty_run;
4870 dirty_run = dirty_line;
4874 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4880 if (ccount >= chlen) {
4881 chlen = ccount + 256;
4882 ch = sresize(ch, chlen, wchar_t);
4884 ch[ccount++] = (wchar_t) tchar;
4889 while (dd->cc_next) {
4890 unsigned long schar;
4895 switch (schar & CSET_MASK) {
4897 schar = term->ucsdata->unitab_line[schar & 0xFF];
4900 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4903 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4907 if (ccount >= chlen) {
4908 chlen = ccount + 256;
4909 ch = sresize(ch, chlen, wchar_t);
4911 ch[ccount++] = (wchar_t) schar;
4914 attr |= TATTR_COMBINING;
4918 copy_termchar(term->disptext[i], j, d);
4919 term->disptext[i]->chars[j].chr = tchar;
4920 term->disptext[i]->chars[j].attr = tattr;
4922 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
4925 /* If it's a wide char step along to the next one. */
4926 if (tattr & ATTR_WIDE) {
4927 if (++j < term->cols) {
4930 * By construction above, the cursor should not
4931 * be on the right-hand half of this character.
4934 assert(!(i == our_curs_y && j == our_curs_x));
4935 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4937 copy_termchar(term->disptext[i], j, d);
4941 if (dirty_run && ccount > 0) {
4942 do_text(ctx, start, i, ch, ccount, attr,
4944 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4945 do_cursor(ctx, start, i, ch, ccount, attr,
4959 * Invalidate the whole screen so it will be repainted in full.
4961 void term_invalidate(Terminal *term)
4965 for (i = 0; i < term->rows; i++)
4966 for (j = 0; j < term->cols; j++)
4967 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4969 term_schedule_update(term);
4973 * Paint the window in response to a WM_PAINT message.
4975 void term_paint(Terminal *term, Context ctx,
4976 int left, int top, int right, int bottom, int immediately)
4979 if (left < 0) left = 0;
4980 if (top < 0) top = 0;
4981 if (right >= term->cols) right = term->cols-1;
4982 if (bottom >= term->rows) bottom = term->rows-1;
4984 for (i = top; i <= bottom && i < term->rows; i++) {
4985 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
4986 for (j = left; j <= right && j < term->cols; j++)
4987 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4989 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
4990 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4994 do_paint (term, ctx, FALSE);
4996 term_schedule_update(term);
5001 * Attempt to scroll the scrollback. The second parameter gives the
5002 * position we want to scroll to; the first is +1 to denote that
5003 * this position is relative to the beginning of the scrollback, -1
5004 * to denote it is relative to the end, and 0 to denote that it is
5005 * relative to the current position.
5007 void term_scroll(Terminal *term, int rel, int where)
5009 int sbtop = -sblines(term);
5010 #ifdef OPTIMISE_SCROLL
5011 int olddisptop = term->disptop;
5013 #endif /* OPTIMISE_SCROLL */
5015 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5016 if (term->disptop < sbtop)
5017 term->disptop = sbtop;
5018 if (term->disptop > 0)
5021 #ifdef OPTIMISE_SCROLL
5022 shift = (term->disptop - olddisptop);
5023 if (shift < term->rows && shift > -term->rows)
5024 scroll_display(term, 0, term->rows - 1, shift);
5025 #endif /* OPTIMISE_SCROLL */
5029 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5032 wchar_t *wbptr; /* where next char goes within workbuf */
5034 int wblen = 0; /* workbuf len */
5035 int buflen; /* amount of memory allocated to workbuf */
5037 buflen = 5120; /* Default size */
5038 workbuf = snewn(buflen, wchar_t);
5039 wbptr = workbuf; /* start filling here */
5040 old_top_x = top.x; /* needed for rect==1 */
5042 while (poslt(top, bottom)) {
5044 termline *ldata = lineptr(top.y);
5048 * nlpos will point at the maximum position on this line we
5049 * should copy up to. So we start it at the end of the
5053 nlpos.x = term->cols;
5056 * ... move it backwards if there's unused space at the end
5057 * of the line (and also set `nl' if this is the case,
5058 * because in normal selection mode this means we need a
5059 * newline at the end)...
5061 if (!(ldata->lattr & LATTR_WRAPPED)) {
5062 while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5063 !ldata->chars[nlpos.x - 1].cc_next &&
5066 if (poslt(nlpos, bottom))
5068 } else if (ldata->lattr & LATTR_WRAPPED2) {
5069 /* Ignore the last char on the line in a WRAPPED2 line. */
5074 * ... and then clip it to the terminal x coordinate if
5075 * we're doing rectangular selection. (In this case we
5076 * still did the above, so that copying e.g. the right-hand
5077 * column from a table doesn't fill with spaces on the
5081 if (nlpos.x > bottom.x)
5083 nl = (top.y < bottom.y);
5086 while (poslt(top, bottom) && poslt(top, nlpos)) {
5089 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5091 wchar_t cbuf[16], *p;
5095 if (ldata->chars[x].chr == UCSWIDE) {
5101 int uc = ldata->chars[x].chr;
5103 switch (uc & CSET_MASK) {
5105 if (!term->cfg.rawcnp) {
5106 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5110 uc = term->ucsdata->unitab_line[uc & 0xFF];
5113 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5116 switch (uc & CSET_MASK) {
5118 uc = term->ucsdata->unitab_font[uc & 0xFF];
5121 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5125 set = (uc & CSET_MASK);
5126 c = (uc & ~CSET_MASK);
5130 if (DIRECT_FONT(uc)) {
5131 if (c >= ' ' && c != 0x7F) {
5135 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5137 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5138 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5142 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5146 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5153 for (p = cbuf; *p; p++) {
5154 /* Enough overhead for trailing NL and nul */
5155 if (wblen >= buflen - 16) {
5157 workbuf = sresize(workbuf, buflen, wchar_t);
5158 wbptr = workbuf + wblen;
5164 if (ldata->chars[x].cc_next)
5165 x += ldata->chars[x].cc_next;
5173 for (i = 0; i < sel_nl_sz; i++) {
5175 *wbptr++ = sel_nl[i];
5179 top.x = rect ? old_top_x : 0;
5183 #if SELECTION_NUL_TERMINATED
5187 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
5188 if (buflen > 0) /* indicates we allocated this buffer */
5192 void term_copyall(Terminal *term)
5196 tree234 *screen = term->screen;
5197 top.y = -sblines(term);
5199 bottom.y = find_last_nonempty_line(term, screen);
5200 bottom.x = term->cols;
5201 clipme(term, top, bottom, 0, TRUE);
5205 * The wordness array is mainly for deciding the disposition of the
5206 * US-ASCII characters.
5208 static int wordtype(Terminal *term, int uc)
5211 int start, end, ctype;
5213 static const struct ucsword ucs_words[] = {
5219 0x037e, 0x037e, 1}, /* Greek question mark */
5221 0x0387, 0x0387, 1}, /* Greek ano teleia */
5223 0x055a, 0x055f, 1}, /* Armenian punctuation */
5225 0x0589, 0x0589, 1}, /* Armenian full stop */
5227 0x0700, 0x070d, 1}, /* Syriac punctuation */
5229 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5231 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5233 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5235 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5237 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5239 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5241 0x2000, 0x200a, 0}, /* Various spaces */
5243 0x2070, 0x207f, 2}, /* superscript */
5245 0x2080, 0x208f, 2}, /* subscript */
5247 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5249 0x3000, 0x3000, 0}, /* ideographic space */
5251 0x3001, 0x3020, 1}, /* ideographic punctuation */
5253 0x303f, 0x309f, 3}, /* Hiragana */
5255 0x30a0, 0x30ff, 3}, /* Katakana */
5257 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5259 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5261 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5263 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5265 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5267 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5269 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5271 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5273 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5277 const struct ucsword *wptr;
5279 switch (uc & CSET_MASK) {
5281 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5284 uc = term->ucsdata->unitab_line[uc & 0xFF];
5287 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5290 switch (uc & CSET_MASK) {
5292 uc = term->ucsdata->unitab_font[uc & 0xFF];
5295 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5299 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5300 * fail as there's such a thing as a double width space. :-(
5302 if (term->ucsdata->dbcs_screenfont &&
5303 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5307 return term->wordness[uc];
5309 for (wptr = ucs_words; wptr->start; wptr++) {
5310 if (uc >= wptr->start && uc <= wptr->end)
5318 * Spread the selection outwards according to the selection mode.
5320 static pos sel_spread_half(Terminal *term, pos p, int dir)
5324 int topy = -sblines(term);
5326 ldata = lineptr(p.y);
5328 switch (term->selmode) {
5331 * In this mode, every character is a separate unit, except
5332 * for runs of spaces at the end of a non-wrapping line.
5334 if (!(ldata->lattr & LATTR_WRAPPED)) {
5335 termchar *q = ldata->chars + term->cols;
5336 while (q > ldata->chars &&
5337 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5339 if (q == ldata->chars + term->cols)
5341 if (p.x >= q - ldata->chars)
5342 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5347 * In this mode, the units are maximal runs of characters
5348 * whose `wordness' has the same value.
5350 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5353 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5354 term->cols-1 : term->cols);
5355 if (p.x < maxcols-1) {
5356 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5361 if (ldata->lattr & LATTR_WRAPPED) {
5363 ldata2 = lineptr(p.y+1);
5364 if (wordtype(term, UCSGET(ldata2->chars, 0))
5381 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5390 ldata2 = lineptr(p.y-1);
5391 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5392 term->cols-1 : term->cols);
5393 if (ldata2->lattr & LATTR_WRAPPED) {
5394 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5412 * In this mode, every line is a unit.
5414 p.x = (dir == -1 ? 0 : term->cols - 1);
5422 static void sel_spread(Terminal *term)
5424 if (term->seltype == LEXICOGRAPHIC) {
5425 term->selstart = sel_spread_half(term, term->selstart, -1);
5426 decpos(term->selend);
5427 term->selend = sel_spread_half(term, term->selend, +1);
5428 incpos(term->selend);
5432 void term_do_paste(Terminal *term)
5437 get_clip(term->frontend, &data, &len);
5438 if (data && len > 0) {
5441 term_seen_key_event(term); /* pasted data counts */
5443 if (term->paste_buffer)
5444 sfree(term->paste_buffer);
5445 term->paste_pos = term->paste_hold = term->paste_len = 0;
5446 term->paste_buffer = snewn(len, wchar_t);
5449 while (p < data + len) {
5450 while (p < data + len &&
5451 !(p <= data + len - sel_nl_sz &&
5452 !memcmp(p, sel_nl, sizeof(sel_nl))))
5457 for (i = 0; i < p - q; i++) {
5458 term->paste_buffer[term->paste_len++] = q[i];
5462 if (p <= data + len - sel_nl_sz &&
5463 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5464 term->paste_buffer[term->paste_len++] = '\015';
5470 /* Assume a small paste will be OK in one go. */
5471 if (term->paste_len < 256) {
5473 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5474 if (term->paste_buffer)
5475 sfree(term->paste_buffer);
5476 term->paste_buffer = 0;
5477 term->paste_pos = term->paste_hold = term->paste_len = 0;
5480 get_clip(term->frontend, NULL, NULL);
5483 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5484 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5488 int raw_mouse = (term->xterm_mouse &&
5489 !term->cfg.no_mouse_rep &&
5490 !(term->cfg.mouse_override && shift));
5491 int default_seltype;
5495 if (a == MA_DRAG && !raw_mouse)
5496 term_scroll(term, 0, -1);
5498 if (y >= term->rows) {
5500 if (a == MA_DRAG && !raw_mouse)
5501 term_scroll(term, 0, +1);
5510 if (x >= term->cols)
5513 selpoint.y = y + term->disptop;
5514 ldata = lineptr(selpoint.y);
5516 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5520 * Transform x through the bidi algorithm to find the _logical_
5521 * click point from the physical one.
5523 if (term_bidi_line(term, ldata, y) != NULL) {
5524 x = term->post_bidi_cache[y].backward[x];
5531 int encstate = 0, r, c;
5538 encstate = 0x20; /* left button down */
5549 case MBT_WHEEL_DOWN:
5552 default: break; /* placate gcc warning about enum use */
5556 if (term->xterm_mouse == 1)
5562 term->mouse_is_down = 0;
5565 if (term->mouse_is_down == braw)
5567 term->mouse_is_down = braw;
5569 default: break; /* placate gcc warning about enum use */
5578 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5579 ldisc_send(term->ldisc, abuf, 6, 0);
5585 * Set the selection type (rectangular or normal) at the start
5586 * of a selection attempt, from the state of Alt.
5588 if (!alt ^ !term->cfg.rect_select)
5589 default_seltype = RECTANGULAR;
5591 default_seltype = LEXICOGRAPHIC;
5593 if (term->selstate == NO_SELECTION) {
5594 term->seltype = default_seltype;
5597 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5599 term->selstate = ABOUT_TO;
5600 term->seltype = default_seltype;
5601 term->selanchor = selpoint;
5602 term->selmode = SM_CHAR;
5603 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5605 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5606 term->selstate = DRAGGING;
5607 term->selstart = term->selanchor = selpoint;
5608 term->selend = term->selstart;
5609 incpos(term->selend);
5611 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5612 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5613 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5615 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5616 term->selstate == SELECTED) {
5617 if (term->seltype == LEXICOGRAPHIC) {
5619 * For normal selection, we extend by moving
5620 * whichever end of the current selection is closer
5623 if (posdiff(selpoint, term->selstart) <
5624 posdiff(term->selend, term->selstart) / 2) {
5625 term->selanchor = term->selend;
5626 decpos(term->selanchor);
5628 term->selanchor = term->selstart;
5632 * For rectangular selection, we have a choice of
5633 * _four_ places to put selanchor and selpoint: the
5634 * four corners of the selection.
5636 if (2*selpoint.x < term->selstart.x + term->selend.x)
5637 term->selanchor.x = term->selend.x-1;
5639 term->selanchor.x = term->selstart.x;
5641 if (2*selpoint.y < term->selstart.y + term->selend.y)
5642 term->selanchor.y = term->selend.y;
5644 term->selanchor.y = term->selstart.y;
5646 term->selstate = DRAGGING;
5648 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5649 term->selanchor = selpoint;
5650 term->selstate = DRAGGING;
5651 if (term->seltype == LEXICOGRAPHIC) {
5653 * For normal selection, we set (selstart,selend) to
5654 * (selpoint,selanchor) in some order.
5656 if (poslt(selpoint, term->selanchor)) {
5657 term->selstart = selpoint;
5658 term->selend = term->selanchor;
5659 incpos(term->selend);
5661 term->selstart = term->selanchor;
5662 term->selend = selpoint;
5663 incpos(term->selend);
5667 * For rectangular selection, we may need to
5668 * interchange x and y coordinates (if the user has
5669 * dragged in the -x and +y directions, or vice versa).
5671 term->selstart.x = min(term->selanchor.x, selpoint.x);
5672 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5673 term->selstart.y = min(term->selanchor.y, selpoint.y);
5674 term->selend.y = max(term->selanchor.y, selpoint.y);
5677 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5679 if (term->selstate == DRAGGING) {
5681 * We've completed a selection. We now transfer the
5682 * data to the clipboard.
5684 clipme(term, term->selstart, term->selend,
5685 (term->seltype == RECTANGULAR), FALSE);
5686 term->selstate = SELECTED;
5688 term->selstate = NO_SELECTION;
5689 } else if (bcooked == MBT_PASTE
5691 #if MULTICLICK_ONLY_EVENT
5692 || a == MA_2CLK || a == MA_3CLK
5695 request_paste(term->frontend);
5701 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5702 unsigned int modifiers, unsigned int flags)
5706 int prependesc = FALSE;
5710 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5711 for (i = 0; i < tlen; i++)
5712 fprintf(stderr, " %04x", (unsigned)text[i]);
5713 fprintf(stderr, "\n");
5717 if ((flags & PKF_REPEAT) && term->repeat_off)
5720 /* Currently, Meta always just prefixes everything with ESC. */
5721 if (modifiers & PKM_META)
5723 modifiers &= ~PKM_META;
5726 * Alt is only used for Alt+keypad, which isn't supported yet, so
5729 modifiers &= ~PKM_ALT;
5731 /* Standard local function keys */
5732 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5734 if (keysym == PK_PAGEUP)
5735 /* scroll up one page */;
5736 if (keysym == PK_PAGEDOWN)
5737 /* scroll down on page */;
5738 if (keysym == PK_INSERT)
5739 term_do_paste(term);
5742 if (keysym == PK_PAGEUP)
5743 /* scroll up one line */;
5744 if (keysym == PK_PAGEDOWN)
5745 /* scroll down one line */;
5746 /* Control-Numlock for app-keypad mode switch */
5747 if (keysym == PK_PF1)
5748 term->app_keypad_keys ^= 1;
5752 if (modifiers & PKM_ALT) {
5753 /* Alt+F4 (close) */
5754 /* Alt+Return (full screen) */
5755 /* Alt+Space (system menu) */
5758 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5759 text[0] >= 0x20 && text[0] <= 0x7e) {
5760 /* ASCII chars + Control */
5761 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5762 (text[0] >= 0x61 && text[0] <= 0x7a))
5766 * Control-2 should return ^@ (0x00), Control-6 should return
5767 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5768 * the DOS keyboard handling did it, and we have nothing better
5769 * to do with the key combo in question, we'll also map
5770 * Control-Backquote to ^\ (0x1C).
5773 case ' ': text[0] = 0x00; break;
5774 case '-': text[0] = 0x1f; break;
5775 case '/': text[0] = 0x1f; break;
5776 case '2': text[0] = 0x00; break;
5777 case '3': text[0] = 0x1b; break;
5778 case '4': text[0] = 0x1c; break;
5779 case '5': text[0] = 0x1d; break;
5780 case '6': text[0] = 0x1e; break;
5781 case '7': text[0] = 0x1f; break;
5782 case '8': text[0] = 0x7f; break;
5783 case '`': text[0] = 0x1c; break;
5788 /* Nethack keypad */
5789 if (term->cfg.nethack_keypad) {
5792 case PK_KP1: c = 'b'; break;
5793 case PK_KP2: c = 'j'; break;
5794 case PK_KP3: c = 'n'; break;
5795 case PK_KP4: c = 'h'; break;
5796 case PK_KP5: c = '.'; break;
5797 case PK_KP6: c = 'l'; break;
5798 case PK_KP7: c = 'y'; break;
5799 case PK_KP8: c = 'k'; break;
5800 case PK_KP9: c = 'u'; break;
5801 default: break; /* else gcc warns `enum value not used' */
5805 if (modifiers & PKM_CONTROL)
5807 else if (modifiers & PKM_SHIFT)
5815 /* Numeric Keypad */
5816 if (PK_ISKEYPAD(keysym)) {
5820 * In VT400 mode, PFn always emits an escape sequence. In
5821 * Linux and tilde modes, this only happens in app keypad mode.
5823 if (term->cfg.funky_type == FUNKY_VT400 ||
5824 ((term->cfg.funky_type == FUNKY_LINUX ||
5825 term->cfg.funky_type == FUNKY_TILDE) &&
5826 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5828 case PK_PF1: xkey = 'P'; break;
5829 case PK_PF2: xkey = 'Q'; break;
5830 case PK_PF3: xkey = 'R'; break;
5831 case PK_PF4: xkey = 'S'; break;
5832 default: break; /* else gcc warns `enum value not used' */
5835 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5837 case PK_KP0: xkey = 'p'; break;
5838 case PK_KP1: xkey = 'q'; break;
5839 case PK_KP2: xkey = 'r'; break;
5840 case PK_KP3: xkey = 's'; break;
5841 case PK_KP4: xkey = 't'; break;
5842 case PK_KP5: xkey = 'u'; break;
5843 case PK_KP6: xkey = 'v'; break;
5844 case PK_KP7: xkey = 'w'; break;
5845 case PK_KP8: xkey = 'x'; break;
5846 case PK_KP9: xkey = 'y'; break;
5847 case PK_KPDECIMAL: xkey = 'n'; break;
5848 case PK_KPENTER: xkey = 'M'; break;
5849 default: break; /* else gcc warns `enum value not used' */
5851 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5853 * xterm can't see the layout of the keypad, so it has
5854 * to rely on the X keysyms returned by the keys.
5855 * Hence, we look at the strings here, not the PuTTY
5856 * keysyms (which describe the layout).
5860 if (modifiers & PKM_SHIFT)
5865 case '/': xkey = 'o'; break;
5866 case '*': xkey = 'j'; break;
5867 case '-': xkey = 'm'; break;
5871 * In all other modes, we try to retain the layout of
5872 * the DEC keypad in application mode.
5876 /* This key covers the '-' and ',' keys on a VT220 */
5877 if (modifiers & PKM_SHIFT)
5878 xkey = 'm'; /* VT220 '-' */
5880 xkey = 'l'; /* VT220 ',' */
5882 case PK_KPMINUS: xkey = 'm'; break;
5883 case PK_KPCOMMA: xkey = 'l'; break;
5884 default: break; /* else gcc warns `enum value not used' */
5889 if (term->vt52_mode) {
5890 if (xkey >= 'P' && xkey <= 'S')
5891 p += sprintf((char *) p, "\x1B%c", xkey);
5893 p += sprintf((char *) p, "\x1B?%c", xkey);
5895 p += sprintf((char *) p, "\x1BO%c", xkey);
5898 /* Not in application mode -- treat the number pad as arrow keys? */
5899 if ((flags & PKF_NUMLOCK) == 0) {
5901 case PK_KP0: keysym = PK_INSERT; break;
5902 case PK_KP1: keysym = PK_END; break;
5903 case PK_KP2: keysym = PK_DOWN; break;
5904 case PK_KP3: keysym = PK_PAGEDOWN; break;
5905 case PK_KP4: keysym = PK_LEFT; break;
5906 case PK_KP5: keysym = PK_REST; break;
5907 case PK_KP6: keysym = PK_RIGHT; break;
5908 case PK_KP7: keysym = PK_HOME; break;
5909 case PK_KP8: keysym = PK_UP; break;
5910 case PK_KP9: keysym = PK_PAGEUP; break;
5911 default: break; /* else gcc warns `enum value not used' */
5916 /* Miscellaneous keys */
5923 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5924 else if (modifiers == PKM_SHIFT)
5925 /* We do the opposite of what is configured */
5926 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5932 else if (modifiers == PKM_SHIFT)
5933 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5936 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5938 if (modifiers == PKM_CONTROL)
5943 case PK_KPENTER: /* Odd keypad modes handled above */
5944 if (modifiers == 0) {
5946 if (term->cr_lf_return)
5950 default: break; /* else gcc warns `enum value not used' */
5953 /* SCO function keys and editing keys */
5954 if (term->cfg.funky_type == FUNKY_SCO) {
5955 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
5956 static char const codes[] =
5957 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5958 int index = keysym - PK_F1;
5960 if (modifiers & PKM_SHIFT) index += 12;
5961 if (modifiers & PKM_CONTROL) index += 24;
5962 p += sprintf((char *) p, "\x1B[%c", codes[index]);
5965 if (PK_ISEDITING(keysym)) {
5969 case PK_DELETE: *p++ = 0x7f; goto done;
5970 case PK_HOME: xkey = 'H'; break;
5971 case PK_INSERT: xkey = 'L'; break;
5972 case PK_END: xkey = 'F'; break;
5973 case PK_PAGEUP: xkey = 'I'; break;
5974 case PK_PAGEDOWN: xkey = 'G'; break;
5975 default: break; /* else gcc warns `enum value not used' */
5977 p += sprintf((char *) p, "\x1B[%c", xkey);
5981 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
5984 if (term->cfg.funky_type == FUNKY_XTERM) {
5985 /* Xterm shuffles these keys, apparently. */
5987 case PK_HOME: keysym = PK_INSERT; break;
5988 case PK_INSERT: keysym = PK_HOME; break;
5989 case PK_DELETE: keysym = PK_END; break;
5990 case PK_END: keysym = PK_PAGEUP; break;
5991 case PK_PAGEUP: keysym = PK_DELETE; break;
5992 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
5993 default: break; /* else gcc warns `enum value not used' */
5998 if (term->cfg.rxvt_homeend &&
5999 (keysym == PK_HOME || keysym == PK_END)) {
6000 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
6004 if (term->vt52_mode) {
6008 * A real VT52 doesn't have these, and a VT220 doesn't
6009 * send anything for them in VT52 mode.
6012 case PK_HOME: xkey = 'H'; break;
6013 case PK_INSERT: xkey = 'L'; break;
6014 case PK_DELETE: xkey = 'M'; break;
6015 case PK_END: xkey = 'E'; break;
6016 case PK_PAGEUP: xkey = 'I'; break;
6017 case PK_PAGEDOWN: xkey = 'G'; break;
6018 default: xkey=0; break; /* else gcc warns `enum value not used'*/
6020 p += sprintf((char *) p, "\x1B%c", xkey);
6025 case PK_HOME: code = 1; break;
6026 case PK_INSERT: code = 2; break;
6027 case PK_DELETE: code = 3; break;
6028 case PK_END: code = 4; break;
6029 case PK_PAGEUP: code = 5; break;
6030 case PK_PAGEDOWN: code = 6; break;
6031 default: code = 0; break; /* else gcc warns `enum value not used' */
6033 p += sprintf((char *) p, "\x1B[%d~", code);
6037 if (PK_ISFKEY(keysym)) {
6038 /* Map Shift+F1-F10 to F11-F20 */
6039 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
6041 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
6043 /* XXX This overrides the XTERM/VT52 mode below */
6045 if (keysym >= PK_F6) offt++;
6046 if (keysym >= PK_F12) offt++;
6047 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6048 'P' + keysym - PK_F1 - offt);
6051 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6052 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6055 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6056 if (term->vt52_mode)
6057 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6059 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6062 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6066 if (PK_ISCURSOR(keysym)) {
6070 case PK_UP: xkey = 'A'; break;
6071 case PK_DOWN: xkey = 'B'; break;
6072 case PK_RIGHT: xkey = 'C'; break;
6073 case PK_LEFT: xkey = 'D'; break;
6074 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6075 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6077 if (term->vt52_mode)
6078 p += sprintf((char *) p, "\x1B%c", xkey);
6080 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
6082 /* Useful mapping of Ctrl-arrows */
6083 if (modifiers == PKM_CONTROL)
6087 p += sprintf((char *) p, "\x1BO%c", xkey);
6089 p += sprintf((char *) p, "\x1B[%c", xkey);
6095 if (p > output || tlen > 0) {
6097 * Interrupt an ongoing paste. I'm not sure
6098 * this is sensible, but for the moment it's
6099 * preferable to having to faff about buffering
6105 * We need not bother about stdin backlogs
6106 * here, because in GUI PuTTY we can't do
6107 * anything about it anyway; there's no means
6108 * of asking Windows to hold off on KEYDOWN
6109 * messages. We _have_ to buffer everything
6112 term_seen_key_event(term);
6116 fprintf(stderr, "sending ESC\n");
6118 ldisc_send(term->ldisc, "\x1b", 1, 1);
6123 fprintf(stderr, "sending %d bytes:", p - output);
6124 for (i = 0; i < p - output; i++)
6125 fprintf(stderr, " %02x", output[i]);
6126 fprintf(stderr, "\n");
6128 ldisc_send(term->ldisc, output, p - output, 1);
6129 } else if (tlen > 0) {
6131 fprintf(stderr, "sending %d unichars:", tlen);
6132 for (i = 0; i < tlen; i++)
6133 fprintf(stderr, " %04x", (unsigned) text[i]);
6134 fprintf(stderr, "\n");
6136 luni_send(term->ldisc, text, tlen, 1);
6141 void term_nopaste(Terminal *term)
6143 if (term->paste_len == 0)
6145 sfree(term->paste_buffer);
6146 term->paste_buffer = NULL;
6147 term->paste_len = 0;
6150 int term_paste_pending(Terminal *term)
6152 return term->paste_len != 0;
6155 void term_paste(Terminal *term)
6157 long now, paste_diff;
6159 if (term->paste_len == 0)
6162 /* Don't wait forever to paste */
6163 if (term->paste_hold) {
6164 now = GETTICKCOUNT();
6165 paste_diff = now - term->last_paste;
6166 if (paste_diff >= 0 && paste_diff < 450)
6169 term->paste_hold = 0;
6171 while (term->paste_pos < term->paste_len) {
6173 while (n + term->paste_pos < term->paste_len) {
6174 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6178 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6179 term->paste_pos += n;
6181 if (term->paste_pos < term->paste_len) {
6182 term->paste_hold = 1;
6186 sfree(term->paste_buffer);
6187 term->paste_buffer = NULL;
6188 term->paste_len = 0;
6191 static void deselect(Terminal *term)
6193 term->selstate = NO_SELECTION;
6194 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6197 void term_deselect(Terminal *term)
6203 int term_ldisc(Terminal *term, int option)
6205 if (option == LD_ECHO)
6206 return term->term_echoing;
6207 if (option == LD_EDIT)
6208 return term->term_editing;
6212 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6214 bufchain_add(&term->inbuf, data, len);
6216 if (!term->in_term_out) {
6217 term->in_term_out = TRUE;
6218 term_reset_cblink(term);
6220 * During drag-selects, we do not process terminal input,
6221 * because the user will want the screen to hold still to
6224 if (term->selstate != DRAGGING)
6226 term->in_term_out = FALSE;
6230 * term_out() always completely empties inbuf. Therefore,
6231 * there's no reason at all to return anything other than zero
6232 * from this function, because there _can't_ be a question of
6233 * the remote side needing to wait until term_out() has cleared
6236 * This is a slightly suboptimal way to deal with SSH-2 - in
6237 * principle, the window mechanism would allow us to continue
6238 * to accept data on forwarded ports and X connections even
6239 * while the terminal processing was going slowly - but we
6240 * can't do the 100% right thing without moving the terminal
6241 * processing into a separate thread, and that might hurt
6242 * portability. So we manage stdout buffering the old SSH-1 way:
6243 * if the terminal processing goes slowly, the whole SSH
6244 * connection stops accepting data until it's ready.
6246 * In practice, I can't imagine this causing serious trouble.
6251 void term_provide_logctx(Terminal *term, void *logctx)
6253 term->logctx = logctx;
6256 void term_set_focus(Terminal *term, int has_focus)
6258 term->has_focus = has_focus;
6259 term_schedule_cblink(term);