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)
138 * Diagnostic function: verify that a termline has a correct
139 * combining character structure.
141 * This is a performance-intensive check, so it's no longer enabled
144 static void cc_check(termline *line)
146 unsigned char *flags;
149 assert(line->size >= line->cols);
151 flags = snewn(line->size, unsigned char);
153 for (i = 0; i < line->size; i++)
154 flags[i] = (i < line->cols);
156 for (i = 0; i < line->cols; i++) {
158 while (line->chars[j].cc_next) {
159 j += line->chars[j].cc_next;
160 assert(j >= line->cols && j < line->size);
169 assert(j >= line->cols && j < line->size);
172 if (line->chars[j].cc_next)
173 j += line->chars[j].cc_next;
180 for (i = 0; i < line->size; i++)
181 j += (flags[i] != 0);
183 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;
240 * Clear the combining character list in a character cell.
242 static void clear_cc(termline *line, int col)
244 int oldfree, origcol = col;
246 assert(col >= 0 && col < line->cols);
248 if (!line->chars[col].cc_next)
249 return; /* nothing needs doing */
251 oldfree = line->cc_free;
252 line->cc_free = col + line->chars[col].cc_next;
253 while (line->chars[col].cc_next)
254 col += line->chars[col].cc_next;
256 line->chars[col].cc_next = oldfree - col;
258 line->chars[col].cc_next = 0;
260 line->chars[origcol].cc_next = 0;
268 * Compare two character cells for equality. Special case required
269 * in do_paint() where we override what we expect the chr and attr
272 static int termchars_equal_override(termchar *a, termchar *b,
273 unsigned long bchr, unsigned long battr)
278 if ((a->attr &~ DATTR_MASK) != (battr &~ DATTR_MASK))
280 while (a->cc_next || b->cc_next) {
281 if (!a->cc_next || !b->cc_next)
282 return FALSE; /* one cc-list ends, other does not */
285 if (a->chr != b->chr)
291 static int termchars_equal(termchar *a, termchar *b)
293 return termchars_equal_override(a, b, b->chr, b->attr);
297 * Copy a character cell. (Requires a pointer to the destination
298 * termline, so as to access its free list.)
300 static void copy_termchar(termline *destline, int x, termchar *src)
302 clear_cc(destline, x);
304 destline->chars[x] = *src; /* copy everything except cc-list */
305 destline->chars[x].cc_next = 0; /* and make sure this is zero */
307 while (src->cc_next) {
309 add_cc(destline, x, src->chr);
318 * Move a character cell within its termline.
320 static void move_termchar(termline *line, termchar *dest, termchar *src)
322 /* First clear the cc list from the original char, just in case. */
323 clear_cc(line, dest - line->chars);
325 /* Move the character cell and adjust its cc_next. */
326 *dest = *src; /* copy everything except cc-list */
328 dest->cc_next = src->cc_next - (dest-src);
330 /* Ensure the original cell doesn't have a cc list. */
339 * Compress and decompress a termline into an RLE-based format for
340 * storing in scrollback. (Since scrollback almost never needs to
341 * be modified and exists in huge quantities, this is a sensible
342 * tradeoff, particularly since it allows us to continue adding
343 * features to the main termchar structure without proportionally
344 * bloating the terminal emulator's memory footprint unless those
345 * features are in constant use.)
351 static void add(struct buf *b, unsigned char c)
353 if (b->len >= b->size) {
354 b->size = (b->len * 3 / 2) + 512;
355 b->data = sresize(b->data, b->size, unsigned char);
357 b->data[b->len++] = c;
359 static int get(struct buf *b)
361 return b->data[b->len++];
363 static void makerle(struct buf *b, termline *ldata,
364 void (*makeliteral)(struct buf *b, termchar *c,
365 unsigned long *state))
367 int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2;
368 termchar *c = ldata->chars;
369 unsigned long state = 0, oldstate;
376 prevlen = prevpos = 0;
381 makeliteral(b, c++, &state);
382 thislen = b->len - thispos;
383 if (thislen == prevlen &&
384 !memcmp(b->data + prevpos, b->data + thispos, thislen)) {
386 * This literal precisely matches the previous one.
387 * Turn it into a run if it's worthwhile.
389 * With one-byte literals, it costs us two bytes to
390 * encode a run, plus another byte to write the header
391 * to resume normal output; so a three-element run is
392 * neutral, and anything beyond that is unconditionally
393 * worthwhile. With two-byte literals or more, even a
396 if (thislen > 1 || prev2) {
400 * It's worth encoding a run. Start at prevpos,
401 * unless hdrsize==0 in which case we can back up
402 * another one and start by overwriting hdrpos.
405 hdrsize--; /* remove the literal at prevpos */
409 prevpos -= prevlen;/* and possibly another one */
413 assert(prevpos == hdrpos + 1);
415 b->len = prevpos+prevlen;
417 memmove(b->data + prevpos+1, b->data + prevpos, prevlen);
419 b->len = prevpos+prevlen+1;
421 * Terminate the previous run of ordinary
424 assert(hdrsize >= 1 && hdrsize <= 128);
425 b->data[hdrpos] = hdrsize - 1;
428 runlen = prev2 ? 3 : 2;
430 while (n > 0 && runlen < 129) {
434 makeliteral(b, c, &state);
435 tmplen = b->len - tmppos;
437 if (tmplen != thislen ||
438 memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) {
440 break; /* run over */
445 assert(runlen >= 2 && runlen <= 129);
446 b->data[runpos] = runlen + 0x80 - 2;
451 /* And ensure this run doesn't interfere with the next. */
452 prevlen = prevpos = 0;
458 * Just flag that the previous two literals were
459 * identical, in case we find a third identical one
460 * we want to turn into a run.
473 * This character isn't (yet) part of a run. Add it to
477 if (hdrsize == 128) {
478 b->data[hdrpos] = hdrsize - 1;
482 prevlen = prevpos = 0;
491 assert(hdrsize <= 128);
492 b->data[hdrpos] = hdrsize - 1;
497 static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state)
500 * My encoding for characters is UTF-8-like, in that it stores
501 * 7-bit ASCII in one byte and uses high-bit-set bytes as
502 * introducers to indicate a longer sequence. However, it's
503 * unlike UTF-8 in that it doesn't need to be able to
504 * resynchronise, and therefore I don't want to waste two bits
505 * per byte on having recognisable continuation characters.
506 * Also I don't want to rule out the possibility that I may one
507 * day use values 0x80000000-0xFFFFFFFF for interesting
508 * purposes, so unlike UTF-8 I need a full 32-bit range.
509 * Accordingly, here is my encoding:
511 * 00000000-0000007F: 0xxxxxxx (but see below)
512 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
513 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
514 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
515 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
517 * (`Z' is like `x' but is always going to be zero since the
518 * values I'm encoding don't go above 2^32. In principle the
519 * five-byte form of the encoding could extend to 2^35, and
520 * there could be six-, seven-, eight- and nine-byte forms as
521 * well to allow up to 64-bit values to be encoded. But that's
522 * completely unnecessary for these purposes!)
524 * The encoding as written above would be very simple, except
525 * that 7-bit ASCII can occur in several different ways in the
526 * terminal data; sometimes it crops up in the D800 page
527 * (CSET_ASCII) but at other times it's in the 0000 page (real
528 * Unicode). Therefore, this encoding is actually _stateful_:
529 * the one-byte encoding of 00-7F actually indicates `reuse the
530 * upper three bytes of the last character', and to encode an
531 * absolute value of 00-7F you need to use the two-byte form
534 if ((c->chr & ~0x7F) == *state) {
535 add(b, (unsigned char)(c->chr & 0x7F));
536 } else if (c->chr < 0x4000) {
537 add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80));
538 add(b, (unsigned char)(c->chr & 0xFF));
539 } else if (c->chr < 0x200000) {
540 add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0));
541 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
542 add(b, (unsigned char)(c->chr & 0xFF));
543 } else if (c->chr < 0x10000000) {
544 add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0));
545 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
546 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
547 add(b, (unsigned char)(c->chr & 0xFF));
550 add(b, (unsigned char)((c->chr >> 24) & 0xFF));
551 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
552 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
553 add(b, (unsigned char)(c->chr & 0xFF));
555 *state = c->chr & ~0xFF;
557 static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state)
560 * My encoding for attributes is 16-bit-granular and assumes
561 * that the top bit of the word is never required. I either
562 * store a two-byte value with the top bit clear (indicating
563 * just that value), or a four-byte value with the top bit set
564 * (indicating the same value with its top bit clear).
566 * However, first I permute the bits of the attribute value, so
567 * that the eight bits of colour (four in each of fg and bg)
568 * which are never non-zero unless xterm 256-colour mode is in
569 * use are placed higher up the word than everything else. This
570 * ensures that attribute values remain 16-bit _unless_ the
571 * user uses extended colour.
573 unsigned attr, colourbits;
577 assert(ATTR_BGSHIFT > ATTR_FGSHIFT);
579 colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF;
581 colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF;
583 attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) |
584 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
585 attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) |
586 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
588 attr |= (colourbits << (32-9));
591 add(b, (unsigned char)((attr >> 8) & 0xFF));
592 add(b, (unsigned char)(attr & 0xFF));
594 add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80));
595 add(b, (unsigned char)((attr >> 16) & 0xFF));
596 add(b, (unsigned char)((attr >> 8) & 0xFF));
597 add(b, (unsigned char)(attr & 0xFF));
600 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
603 * For combining characters, I just encode a bunch of ordinary
604 * chars using makeliteral_chr, and terminate with a \0
605 * character (which I know won't come up as a combining char
608 * I don't use the stateful encoding in makeliteral_chr.
610 unsigned long zstate;
619 makeliteral_chr(b, c, &zstate);
624 makeliteral_chr(b, &z, &zstate);
627 static termline *decompressline(unsigned char *data, int *bytes_used);
629 static unsigned char *compressline(termline *ldata)
631 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
634 * First, store the column count, 7 bits at a time, least
635 * significant `digit' first, with the high bit set on all but
641 add(b, (unsigned char)((n & 0x7F) | 0x80));
644 add(b, (unsigned char)(n));
648 * Next store the lattrs; same principle.
651 int n = ldata->lattr;
653 add(b, (unsigned char)((n & 0x7F) | 0x80));
656 add(b, (unsigned char)(n));
660 * Now we store a sequence of separate run-length encoded
661 * fragments, each containing exactly as many symbols as there
662 * are columns in the ldata.
664 * All of these have a common basic format:
666 * - a byte 00-7F indicates that X+1 literals follow it
667 * - a byte 80-FF indicates that a single literal follows it
668 * and expects to be repeated (X-0x80)+2 times.
670 * The format of the `literals' varies between the fragments.
672 makerle(b, ldata, makeliteral_chr);
673 makerle(b, ldata, makeliteral_attr);
674 makerle(b, ldata, makeliteral_cc);
677 * Diagnostics: ensure that the compressed data really does
678 * decompress to the right thing.
680 * This is a bit performance-heavy for production code.
683 #ifndef CHECK_SB_COMPRESSION
689 #ifdef DIAGNOSTIC_SB_COMPRESSION
690 for (i = 0; i < b->len; i++) {
691 printf(" %02x ", b->data[i]);
696 dcl = decompressline(b->data, &dused);
697 assert(b->len == dused);
698 assert(ldata->cols == dcl->cols);
699 assert(ldata->lattr == dcl->lattr);
700 for (i = 0; i < ldata->cols; i++)
701 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
703 #ifdef DIAGNOSTIC_SB_COMPRESSION
704 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
705 ldata->cols, 4 * ldata->cols, dused,
706 (double)dused / (4 * ldata->cols));
712 #endif /* TERM_CC_DIAGS */
715 * Trim the allocated memory so we don't waste any, and return.
717 return sresize(b->data, b->len, unsigned char);
720 static void readrle(struct buf *b, termline *ldata,
721 void (*readliteral)(struct buf *b, termchar *c,
722 termline *ldata, unsigned long *state))
725 unsigned long state = 0;
727 while (n < ldata->cols) {
733 int pos = b->len, count = hdr + 2 - 0x80;
735 assert(n < ldata->cols);
737 readliteral(b, ldata->chars + n, ldata, &state);
741 /* Just a sequence of consecutive literals. */
745 assert(n < ldata->cols);
746 readliteral(b, ldata->chars + n, ldata, &state);
752 assert(n == ldata->cols);
754 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
755 unsigned long *state)
760 * 00000000-0000007F: 0xxxxxxx
761 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
762 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
763 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
764 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
769 c->chr = byte | *state;
770 } else if (byte < 0xC0) {
771 c->chr = (byte &~ 0xC0) << 8;
773 } else if (byte < 0xE0) {
774 c->chr = (byte &~ 0xE0) << 16;
775 c->chr |= get(b) << 8;
777 } else if (byte < 0xF0) {
778 c->chr = (byte &~ 0xF0) << 24;
779 c->chr |= get(b) << 16;
780 c->chr |= get(b) << 8;
783 assert(byte == 0xF0);
784 c->chr = get(b) << 24;
785 c->chr |= get(b) << 16;
786 c->chr |= get(b) << 8;
789 *state = c->chr & ~0xFF;
791 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
792 unsigned long *state)
794 unsigned val, attr, colourbits;
806 colourbits = (val >> (32-9)) & 0xFF;
807 attr = (val & ((1<<(32-9))-1));
809 attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) |
810 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
811 attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) |
812 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
814 attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4);
815 attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4);
819 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
820 unsigned long *state)
823 unsigned long zstate;
824 int x = c - ldata->chars;
830 readliteral_chr(b, &n, ldata, &zstate);
833 add_cc(ldata, x, n.chr);
837 static termline *decompressline(unsigned char *data, int *bytes_used)
839 int ncols, byte, shift;
840 struct buf buffer, *b = &buffer;
847 * First read in the column count.
852 ncols |= (byte & 0x7F) << shift;
854 } while (byte & 0x80);
857 * Now create the output termline.
859 ldata = snew(termline);
860 ldata->chars = snewn(ncols, termchar);
861 ldata->cols = ldata->size = ncols;
862 ldata->temporary = TRUE;
866 * We must set all the cc pointers in ldata->chars to 0 right
867 * now, so that cc diagnostics that verify the integrity of the
868 * whole line will make sense while we're in the middle of
873 for (i = 0; i < ldata->cols; i++)
874 ldata->chars[i].cc_next = 0;
878 * Now read in the lattr.
880 ldata->lattr = shift = 0;
883 ldata->lattr |= (byte & 0x7F) << shift;
885 } while (byte & 0x80);
888 * Now we read in each of the RLE streams in turn.
890 readrle(b, ldata, readliteral_chr);
891 readrle(b, ldata, readliteral_attr);
892 readrle(b, ldata, readliteral_cc);
894 /* Return the number of bytes read, for diagnostic purposes. */
896 *bytes_used = b->len;
902 * Resize a line to make it `cols' columns wide.
904 static void resizeline(Terminal *term, termline *line, int cols)
908 if (line->cols != cols) {
910 oldcols = line->cols;
913 * This line is the wrong length, which probably means it
914 * hasn't been accessed since a resize. Resize it now.
916 * First, go through all the characters that will be thrown
917 * out in the resize (if we're shrinking the line) and
918 * return their cc lists to the cc free list.
920 for (i = cols; i < oldcols; i++)
924 * If we're shrinking the line, we now bodily move the
925 * entire cc section from where it started to where it now
926 * needs to be. (We have to do this before the resize, so
927 * that the data we're copying is still there. However, if
928 * we're expanding, we have to wait until _after_ the
929 * resize so that the space we're copying into is there.)
932 memmove(line->chars + cols, line->chars + oldcols,
933 (line->size - line->cols) * TSIZE);
936 * Now do the actual resize, leaving the _same_ amount of
937 * cc space as there was to begin with.
939 line->size += cols - oldcols;
940 line->chars = sresize(line->chars, line->size, TTYPE);
944 * If we're expanding the line, _now_ we move the cc
948 memmove(line->chars + cols, line->chars + oldcols,
949 (line->size - line->cols) * TSIZE);
952 * Go through what's left of the original line, and adjust
953 * the first cc_next pointer in each list. (All the
954 * subsequent ones are still valid because they are
955 * relative offsets within the cc block.) Also do the same
956 * to the head of the cc_free list.
958 for (i = 0; i < oldcols && i < cols; i++)
959 if (line->chars[i].cc_next)
960 line->chars[i].cc_next += cols - oldcols;
962 line->cc_free += cols - oldcols;
965 * And finally fill in the new space with erase chars. (We
966 * don't have to worry about cc lists here, because we
967 * _know_ the erase char doesn't have one.)
969 for (i = oldcols; i < cols; i++)
970 line->chars[i] = term->basic_erase_char;
979 * Get the number of lines in the scrollback.
981 static int sblines(Terminal *term)
983 int sblines = count234(term->scrollback);
984 if (term->cfg.erase_to_scrollback &&
985 term->alt_which && term->alt_screen) {
986 sblines += term->alt_sblines;
992 * Retrieve a line of the screen or of the scrollback, according to
993 * whether the y coordinate is non-negative or negative
996 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
1003 whichtree = term->screen;
1010 if (term->cfg.erase_to_scrollback &&
1011 term->alt_which && term->alt_screen) {
1012 altlines = term->alt_sblines;
1014 if (y < -altlines) {
1015 whichtree = term->scrollback;
1016 treeindex = y + altlines + count234(term->scrollback);
1018 whichtree = term->alt_screen;
1019 treeindex = y + term->alt_sblines;
1020 /* treeindex = y + count234(term->alt_screen); */
1023 if (whichtree == term->scrollback) {
1024 unsigned char *cline = index234(whichtree, treeindex);
1025 line = decompressline(cline, NULL);
1027 line = index234(whichtree, treeindex);
1030 /* We assume that we don't screw up and retrieve something out of range. */
1032 fatalbox("line==NULL in terminal.c\n"
1033 "lineno=%d y=%d w=%d h=%d\n"
1034 "count(scrollback=%p)=%d\n"
1035 "count(screen=%p)=%d\n"
1036 "count(alt=%p)=%d alt_sblines=%d\n"
1037 "whichtree=%p treeindex=%d\n\n"
1038 "Please contact <putty@projects.tartarus.org> "
1039 "and pass on the above information.",
1040 lineno, y, term->cols, term->rows,
1041 term->scrollback, count234(term->scrollback),
1042 term->screen, count234(term->screen),
1043 term->alt_screen, count234(term->alt_screen), term->alt_sblines,
1044 whichtree, treeindex);
1046 assert(line != NULL);
1048 resizeline(term, line, term->cols);
1049 /* FIXME: should we sort the compressed scrollback out here? */
1054 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1055 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1057 static void term_schedule_tblink(Terminal *term);
1058 static void term_schedule_cblink(Terminal *term);
1060 static void term_timer(void *ctx, long now)
1062 Terminal *term = (Terminal *)ctx;
1065 if (term->tblink_pending && now - term->next_tblink >= 0) {
1066 term->tblinker = !term->tblinker;
1067 term->tblink_pending = FALSE;
1068 term_schedule_tblink(term);
1072 if (term->cblink_pending && now - term->next_cblink >= 0) {
1073 term->cblinker = !term->cblinker;
1074 term->cblink_pending = FALSE;
1075 term_schedule_cblink(term);
1079 if (term->in_vbell && now - term->vbell_end >= 0) {
1080 term->in_vbell = FALSE;
1085 (term->window_update_pending && now - term->next_update >= 0))
1089 static void term_schedule_update(Terminal *term)
1091 if (!term->window_update_pending) {
1092 term->window_update_pending = TRUE;
1093 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1098 * Call this whenever the terminal window state changes, to queue
1101 static void seen_disp_event(Terminal *term)
1103 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1104 term_schedule_update(term);
1108 * Call when the terminal's blinking-text settings change, or when
1109 * a text blink has just occurred.
1111 static void term_schedule_tblink(Terminal *term)
1113 if (term->blink_is_real) {
1114 if (!term->tblink_pending)
1115 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1116 term->tblink_pending = TRUE;
1118 term->tblinker = 1; /* reset when not in use */
1119 term->tblink_pending = FALSE;
1124 * Likewise with cursor blinks.
1126 static void term_schedule_cblink(Terminal *term)
1128 if (term->cfg.blink_cur && term->has_focus) {
1129 if (!term->cblink_pending)
1130 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1131 term->cblink_pending = TRUE;
1133 term->cblinker = 1; /* reset when not in use */
1134 term->cblink_pending = FALSE;
1139 * Call to reset cursor blinking on new output.
1141 static void term_reset_cblink(Terminal *term)
1143 seen_disp_event(term);
1145 term->cblink_pending = FALSE;
1146 term_schedule_cblink(term);
1150 * Call to begin a visual bell.
1152 static void term_schedule_vbell(Terminal *term, int already_started,
1155 long ticks_already_gone;
1157 if (already_started)
1158 ticks_already_gone = GETTICKCOUNT() - startpoint;
1160 ticks_already_gone = 0;
1162 if (ticks_already_gone < VBELL_DELAY) {
1163 term->in_vbell = TRUE;
1164 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1167 term->in_vbell = FALSE;
1172 * Set up power-on settings for the terminal.
1174 static void power_on(Terminal *term)
1176 term->curs.x = term->curs.y = 0;
1177 term->alt_x = term->alt_y = 0;
1178 term->savecurs.x = term->savecurs.y = 0;
1179 term->alt_t = term->marg_t = 0;
1180 if (term->rows != -1)
1181 term->alt_b = term->marg_b = term->rows - 1;
1183 term->alt_b = term->marg_b = 0;
1184 if (term->cols != -1) {
1186 for (i = 0; i < term->cols; i++)
1187 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1189 term->alt_om = term->dec_om = term->cfg.dec_om;
1190 term->alt_ins = term->insert = FALSE;
1191 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
1192 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1193 term->alt_cset = term->cset = term->save_cset = 0;
1194 term->alt_utf = term->utf = term->save_utf = 0;
1195 term->utf_state = 0;
1196 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
1197 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII;
1199 term->in_vbell = FALSE;
1200 term->cursor_on = 1;
1201 term->big_cursor = 0;
1202 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
1203 term->term_editing = term->term_echoing = FALSE;
1204 term->app_cursor_keys = term->cfg.app_cursor;
1205 term->app_keypad_keys = term->cfg.app_keypad;
1206 term->use_bce = term->cfg.bce;
1207 term->blink_is_real = term->cfg.blinktext;
1208 term->erase_char = term->basic_erase_char;
1209 term->alt_which = 0;
1210 term_print_finish(term);
1213 for (i = 0; i < 256; i++)
1214 term->wordness[i] = term->cfg.wordness[i];
1217 swap_screen(term, 1, FALSE, FALSE);
1218 erase_lots(term, FALSE, TRUE, TRUE);
1219 swap_screen(term, 0, FALSE, FALSE);
1220 erase_lots(term, FALSE, TRUE, TRUE);
1222 term_schedule_tblink(term);
1223 term_schedule_cblink(term);
1227 * Force a screen update.
1229 void term_update(Terminal *term)
1233 term->window_update_pending = FALSE;
1235 ctx = get_ctx(term->frontend);
1237 int need_sbar_update = term->seen_disp_event;
1238 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1239 term->disptop = 0; /* return to main screen */
1240 term->seen_disp_event = 0;
1241 need_sbar_update = TRUE;
1244 if (need_sbar_update)
1246 do_paint(term, ctx, TRUE);
1247 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1253 * Called from front end when a keypress occurs, to trigger
1254 * anything magical that needs to happen in that situation.
1256 void term_seen_key_event(Terminal *term)
1259 * On any keypress, clear the bell overload mechanism
1260 * completely, on the grounds that large numbers of
1261 * beeps coming from deliberate key action are likely
1262 * to be intended (e.g. beeps from filename completion
1263 * blocking repeatedly).
1265 term->beep_overloaded = FALSE;
1266 while (term->beephead) {
1267 struct beeptime *tmp = term->beephead;
1268 term->beephead = tmp->next;
1271 term->beeptail = NULL;
1275 * Reset the scrollback on keypress, if we're doing that.
1277 if (term->cfg.scroll_on_key) {
1278 term->disptop = 0; /* return to main screen */
1279 seen_disp_event(term);
1284 * Same as power_on(), but an external function.
1286 void term_pwron(Terminal *term)
1289 if (term->ldisc) /* cause ldisc to notice changes */
1290 ldisc_send(term->ldisc, NULL, 0, 0);
1296 static void set_erase_char(Terminal *term)
1298 term->erase_char = term->basic_erase_char;
1300 term->erase_char.attr = (term->curr_attr &
1301 (ATTR_FGMASK | ATTR_BGMASK));
1305 * When the user reconfigures us, we need to check the forbidden-
1306 * alternate-screen config option, disable raw mouse mode if the
1307 * user has disabled mouse reporting, and abandon a print job if
1308 * the user has disabled printing.
1310 void term_reconfig(Terminal *term, Config *cfg)
1313 * Before adopting the new config, check all those terminal
1314 * settings which control power-on defaults; and if they've
1315 * changed, we will modify the current state as well as the
1316 * default one. The full list is: Auto wrap mode, DEC Origin
1317 * Mode, BCE, blinking text, character classes.
1319 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1322 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1323 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1324 reset_bce = (term->cfg.bce != cfg->bce);
1325 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1326 reset_charclass = 0;
1327 for (i = 0; i < lenof(term->cfg.wordness); i++)
1328 if (term->cfg.wordness[i] != cfg->wordness[i])
1329 reset_charclass = 1;
1332 * If the bidi or shaping settings have changed, flush the bidi
1335 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1336 term->cfg.bidi != cfg->bidi) {
1337 for (i = 0; i < term->bidi_cache_size; i++) {
1338 sfree(term->pre_bidi_cache[i].chars);
1339 sfree(term->post_bidi_cache[i].chars);
1340 term->pre_bidi_cache[i].width = -1;
1341 term->pre_bidi_cache[i].chars = NULL;
1342 term->post_bidi_cache[i].width = -1;
1343 term->post_bidi_cache[i].chars = NULL;
1347 term->cfg = *cfg; /* STRUCTURE COPY */
1350 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1352 term->alt_om = term->dec_om = term->cfg.dec_om;
1354 term->use_bce = term->cfg.bce;
1355 set_erase_char(term);
1358 term->blink_is_real = term->cfg.blinktext;
1360 if (reset_charclass)
1361 for (i = 0; i < 256; i++)
1362 term->wordness[i] = term->cfg.wordness[i];
1364 if (term->cfg.no_alt_screen)
1365 swap_screen(term, 0, FALSE, FALSE);
1366 if (term->cfg.no_mouse_rep) {
1367 term->xterm_mouse = 0;
1368 set_raw_mouse_mode(term->frontend, 0);
1370 if (term->cfg.no_remote_charset) {
1371 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1372 term->sco_acs = term->alt_sco_acs = 0;
1375 if (!*term->cfg.printer) {
1376 term_print_finish(term);
1378 term_schedule_tblink(term);
1379 term_schedule_cblink(term);
1383 * Clear the scrollback.
1385 void term_clrsb(Terminal *term)
1389 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1390 sfree(line); /* this is compressed data, not a termline */
1392 term->tempsblines = 0;
1393 term->alt_sblines = 0;
1398 * Initialise the terminal.
1400 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1406 * Allocate a new Terminal structure and initialise the fields
1409 term = snew(Terminal);
1410 term->frontend = frontend;
1411 term->ucsdata = ucsdata;
1412 term->cfg = *mycfg; /* STRUCTURE COPY */
1413 term->logctx = NULL;
1414 term->compatibility_level = TM_PUTTY;
1415 strcpy(term->id_string, "\033[?6c");
1416 term->cblink_pending = term->tblink_pending = FALSE;
1417 term->paste_buffer = NULL;
1418 term->paste_len = 0;
1419 term->last_paste = 0;
1420 bufchain_init(&term->inbuf);
1421 bufchain_init(&term->printer_buf);
1422 term->printing = term->only_printing = FALSE;
1423 term->print_job = NULL;
1424 term->vt52_mode = FALSE;
1425 term->cr_lf_return = FALSE;
1426 term->seen_disp_event = FALSE;
1427 term->xterm_mouse = term->mouse_is_down = FALSE;
1428 term->reset_132 = FALSE;
1429 term->cblinker = term->tblinker = 0;
1430 term->has_focus = 1;
1431 term->repeat_off = FALSE;
1432 term->termstate = TOPLEVEL;
1433 term->selstate = NO_SELECTION;
1436 term->screen = term->alt_screen = term->scrollback = NULL;
1437 term->tempsblines = 0;
1438 term->alt_sblines = 0;
1440 term->disptext = NULL;
1441 term->dispcursx = term->dispcursy = -1;
1444 term->rows = term->cols = -1;
1446 term->beephead = term->beeptail = NULL;
1447 #ifdef OPTIMISE_SCROLL
1448 term->scrollhead = term->scrolltail = NULL;
1449 #endif /* OPTIMISE_SCROLL */
1451 term->lastbeep = FALSE;
1452 term->beep_overloaded = FALSE;
1453 term->attr_mask = 0xffffffff;
1454 term->resize_fn = NULL;
1455 term->resize_ctx = NULL;
1456 term->in_term_out = FALSE;
1458 term->ltemp_size = 0;
1459 term->wcFrom = NULL;
1461 term->wcFromTo_size = 0;
1463 term->window_update_pending = FALSE;
1465 term->bidi_cache_size = 0;
1466 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1469 term->basic_erase_char.chr = CSET_ASCII | ' ';
1470 term->basic_erase_char.attr = ATTR_DEFAULT;
1471 term->basic_erase_char.cc_next = 0;
1472 term->erase_char = term->basic_erase_char;
1477 void term_free(Terminal *term)
1480 struct beeptime *beep;
1483 while ((line = delpos234(term->scrollback, 0)) != NULL)
1484 sfree(line); /* compressed data, not a termline */
1485 freetree234(term->scrollback);
1486 while ((line = delpos234(term->screen, 0)) != NULL)
1488 freetree234(term->screen);
1489 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1491 freetree234(term->alt_screen);
1492 if (term->disptext) {
1493 for (i = 0; i < term->rows; i++)
1494 freeline(term->disptext[i]);
1496 sfree(term->disptext);
1497 while (term->beephead) {
1498 beep = term->beephead;
1499 term->beephead = beep->next;
1502 bufchain_clear(&term->inbuf);
1504 printer_finish_job(term->print_job);
1505 bufchain_clear(&term->printer_buf);
1506 sfree(term->paste_buffer);
1508 sfree(term->wcFrom);
1511 for (i = 0; i < term->bidi_cache_size; i++) {
1512 sfree(term->pre_bidi_cache[i].chars);
1513 sfree(term->post_bidi_cache[i].chars);
1515 sfree(term->pre_bidi_cache);
1516 sfree(term->post_bidi_cache);
1518 expire_timer_context(term);
1524 * Set up the terminal for a given size.
1526 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1529 termline **newdisp, *line;
1530 int i, j, oldrows = term->rows;
1532 int save_alt_which = term->alt_which;
1534 if (newrows == term->rows && newcols == term->cols &&
1535 newsavelines == term->savelines)
1536 return; /* nothing to do */
1539 swap_screen(term, 0, FALSE, FALSE);
1541 term->alt_t = term->marg_t = 0;
1542 term->alt_b = term->marg_b = newrows - 1;
1544 if (term->rows == -1) {
1545 term->scrollback = newtree234(NULL);
1546 term->screen = newtree234(NULL);
1547 term->tempsblines = 0;
1552 * Resize the screen and scrollback. We only need to shift
1553 * lines around within our data structures, because lineptr()
1554 * will take care of resizing each individual line if
1557 * - If the new screen is longer, we shunt lines in from temporary
1558 * scrollback if possible, otherwise we add new blank lines at
1561 * - If the new screen is shorter, we remove any blank lines at
1562 * the bottom if possible, otherwise shunt lines above the cursor
1563 * to scrollback if possible, otherwise delete lines below the
1566 * - Then, if the new scrollback length is less than the
1567 * amount of scrollback we actually have, we must throw some
1570 sblen = count234(term->scrollback);
1571 /* Do this loop to expand the screen if newrows > rows */
1572 assert(term->rows == count234(term->screen));
1573 while (term->rows < newrows) {
1574 if (term->tempsblines > 0) {
1575 unsigned char *cline;
1576 /* Insert a line from the scrollback at the top of the screen. */
1577 assert(sblen >= term->tempsblines);
1578 cline = delpos234(term->scrollback, --sblen);
1579 line = decompressline(cline, NULL);
1581 line->temporary = FALSE; /* reconstituted line is now real */
1582 term->tempsblines -= 1;
1583 addpos234(term->screen, line, 0);
1585 term->savecurs.y += 1;
1587 /* Add a new blank line at the bottom of the screen. */
1588 line = newline(term, newcols, FALSE);
1589 addpos234(term->screen, line, count234(term->screen));
1593 /* Do this loop to shrink the screen if newrows < rows */
1594 while (term->rows > newrows) {
1595 if (term->curs.y < term->rows - 1) {
1596 /* delete bottom row, unless it contains the cursor */
1597 sfree(delpos234(term->screen, term->rows - 1));
1599 /* push top row to scrollback */
1600 line = delpos234(term->screen, 0);
1601 addpos234(term->scrollback, compressline(line), sblen++);
1603 term->tempsblines += 1;
1605 term->savecurs.y -= 1;
1609 assert(term->rows == newrows);
1610 assert(count234(term->screen) == newrows);
1612 /* Delete any excess lines from the scrollback. */
1613 while (sblen > newsavelines) {
1614 line = delpos234(term->scrollback, 0);
1618 if (sblen < term->tempsblines)
1619 term->tempsblines = sblen;
1620 assert(count234(term->scrollback) <= newsavelines);
1621 assert(count234(term->scrollback) >= term->tempsblines);
1624 /* Make a new displayed text buffer. */
1625 newdisp = snewn(newrows, termline *);
1626 for (i = 0; i < newrows; i++) {
1627 newdisp[i] = newline(term, newcols, FALSE);
1628 for (j = 0; j < newcols; j++)
1629 newdisp[i]->chars[j].attr = ATTR_INVALID;
1631 if (term->disptext) {
1632 for (i = 0; i < oldrows; i++)
1633 freeline(term->disptext[i]);
1635 sfree(term->disptext);
1636 term->disptext = newdisp;
1637 term->dispcursx = term->dispcursy = -1;
1639 /* Make a new alternate screen. */
1640 newalt = newtree234(NULL);
1641 for (i = 0; i < newrows; i++) {
1642 line = newline(term, newcols, TRUE);
1643 addpos234(newalt, line, i);
1645 if (term->alt_screen) {
1646 while (NULL != (line = delpos234(term->alt_screen, 0)))
1648 freetree234(term->alt_screen);
1650 term->alt_screen = newalt;
1651 term->alt_sblines = 0;
1653 term->tabs = sresize(term->tabs, newcols, unsigned char);
1656 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1657 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1660 /* Check that the cursor positions are still valid. */
1661 if (term->savecurs.y < 0)
1662 term->savecurs.y = 0;
1663 if (term->savecurs.y >= newrows)
1664 term->savecurs.y = newrows - 1;
1665 if (term->curs.y < 0)
1667 if (term->curs.y >= newrows)
1668 term->curs.y = newrows - 1;
1669 if (term->curs.x >= newcols)
1670 term->curs.x = newcols - 1;
1671 term->alt_x = term->alt_y = 0;
1672 term->wrapnext = term->alt_wnext = FALSE;
1674 term->rows = newrows;
1675 term->cols = newcols;
1676 term->savelines = newsavelines;
1678 swap_screen(term, save_alt_which, FALSE, FALSE);
1682 if (term->resize_fn)
1683 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1687 * Hand a function and context pointer to the terminal which it can
1688 * use to notify a back end of resizes.
1690 void term_provide_resize_fn(Terminal *term,
1691 void (*resize_fn)(void *, int, int),
1694 term->resize_fn = resize_fn;
1695 term->resize_ctx = resize_ctx;
1696 if (term->cols > 0 && term->rows > 0)
1697 resize_fn(resize_ctx, term->cols, term->rows);
1700 /* Find the bottom line on the screen that has any content.
1701 * If only the top line has content, returns 0.
1702 * If no lines have content, return -1.
1704 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1707 for (i = count234(screen) - 1; i >= 0; i--) {
1708 termline *line = index234(screen, i);
1710 for (j = 0; j < line->cols; j++)
1711 if (!termchars_equal(&line->chars[j], &term->erase_char))
1713 if (j != line->cols) break;
1719 * Swap screens. If `reset' is TRUE and we have been asked to
1720 * switch to the alternate screen, we must bring most of its
1721 * configuration from the main screen and erase the contents of the
1722 * alternate screen completely. (This is even true if we're already
1723 * on it! Blame xterm.)
1725 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1731 reset = FALSE; /* do no weird resetting if which==0 */
1733 if (which != term->alt_which) {
1734 term->alt_which = which;
1736 ttr = term->alt_screen;
1737 term->alt_screen = term->screen;
1739 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1741 if (!reset && !keep_cur_pos)
1742 term->curs.x = term->alt_x;
1745 if (!reset && !keep_cur_pos)
1746 term->curs.y = term->alt_y;
1749 if (!reset) term->marg_t = term->alt_t;
1752 if (!reset) term->marg_b = term->alt_b;
1755 if (!reset) term->dec_om = term->alt_om;
1758 if (!reset) term->wrap = term->alt_wrap;
1761 if (!reset) term->wrapnext = term->alt_wnext;
1762 term->alt_wnext = t;
1764 if (!reset) term->insert = term->alt_ins;
1767 if (!reset) term->cset = term->alt_cset;
1770 if (!reset) term->utf = term->alt_utf;
1773 if (!reset) term->sco_acs = term->alt_sco_acs;
1774 term->alt_sco_acs = t;
1777 if (reset && term->screen) {
1779 * Yes, this _is_ supposed to honour background-colour-erase.
1781 erase_lots(term, FALSE, TRUE, TRUE);
1786 * Update the scroll bar.
1788 static void update_sbar(Terminal *term)
1790 int nscroll = sblines(term);
1791 set_sbar(term->frontend, nscroll + term->rows,
1792 nscroll + term->disptop, term->rows);
1796 * Check whether the region bounded by the two pointers intersects
1797 * the scroll region, and de-select the on-screen selection if so.
1799 static void check_selection(Terminal *term, pos from, pos to)
1801 if (poslt(from, term->selend) && poslt(term->selstart, to))
1806 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1807 * for backward.) `sb' is TRUE if the scrolling is permitted to
1808 * affect the scrollback buffer.
1810 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1813 int i, seltop, olddisptop, shift;
1815 if (topline != 0 || term->alt_which != 0)
1818 olddisptop = term->disptop;
1822 line = delpos234(term->screen, botline);
1823 resizeline(term, line, term->cols);
1824 for (i = 0; i < term->cols; i++)
1825 copy_termchar(line, i, &term->erase_char);
1826 line->lattr = LATTR_NORM;
1827 addpos234(term->screen, line, topline);
1829 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1831 if (term->selstart.y > botline) {
1832 term->selstart.y = botline + 1;
1833 term->selstart.x = 0;
1836 if (term->selend.y >= topline && term->selend.y <= botline) {
1838 if (term->selend.y > botline) {
1839 term->selend.y = botline + 1;
1848 line = delpos234(term->screen, topline);
1849 #ifdef TERM_CC_DIAGS
1852 if (sb && term->savelines > 0) {
1853 int sblen = count234(term->scrollback);
1855 * We must add this line to the scrollback. We'll
1856 * remove a line from the top of the scrollback if
1857 * the scrollback is full.
1859 if (sblen == term->savelines) {
1860 unsigned char *cline;
1863 cline = delpos234(term->scrollback, 0);
1866 term->tempsblines += 1;
1868 addpos234(term->scrollback, compressline(line), sblen);
1870 /* now `line' itself can be reused as the bottom line */
1873 * If the user is currently looking at part of the
1874 * scrollback, and they haven't enabled any options
1875 * that are going to reset the scrollback as a
1876 * result of this movement, then the chances are
1877 * they'd like to keep looking at the same line. So
1878 * we move their viewpoint at the same rate as the
1879 * scroll, at least until their viewpoint hits the
1880 * top end of the scrollback buffer, at which point
1881 * we don't have the choice any more.
1883 * Thanks to Jan Holmen Holsten for the idea and
1884 * initial implementation.
1886 if (term->disptop > -term->savelines && term->disptop < 0)
1889 resizeline(term, line, term->cols);
1890 for (i = 0; i < term->cols; i++)
1891 copy_termchar(line, i, &term->erase_char);
1892 line->lattr = LATTR_NORM;
1893 addpos234(term->screen, line, botline);
1896 * If the selection endpoints move into the scrollback,
1897 * we keep them moving until they hit the top. However,
1898 * of course, if the line _hasn't_ moved into the
1899 * scrollback then we don't do this, and cut them off
1900 * at the top of the scroll region.
1902 * This applies to selstart and selend (for an existing
1903 * selection), and also selanchor (for one being
1904 * selected as we speak).
1906 seltop = sb ? -term->savelines : topline;
1908 if (term->selstate != NO_SELECTION) {
1909 if (term->selstart.y >= seltop &&
1910 term->selstart.y <= botline) {
1912 if (term->selstart.y < seltop) {
1913 term->selstart.y = seltop;
1914 term->selstart.x = 0;
1917 if (term->selend.y >= seltop && term->selend.y <= botline) {
1919 if (term->selend.y < seltop) {
1920 term->selend.y = seltop;
1924 if (term->selanchor.y >= seltop &&
1925 term->selanchor.y <= botline) {
1926 term->selanchor.y--;
1927 if (term->selanchor.y < seltop) {
1928 term->selanchor.y = seltop;
1929 term->selanchor.x = 0;
1937 #ifdef OPTIMISE_SCROLL
1938 shift += term->disptop - olddisptop;
1939 if (shift < term->rows && shift > -term->rows && shift != 0)
1940 scroll_display(term, topline, botline, shift);
1941 #endif /* OPTIMISE_SCROLL */
1944 #ifdef OPTIMISE_SCROLL
1946 * Add a scroll of a region on the screen into the pending scroll list.
1947 * `lines' is +ve for scrolling forward, -ve for backward.
1949 * If the scroll is on the same area as the last scroll in the list,
1952 static void save_scroll(Terminal *term, int topline, int botline, int lines)
1954 struct scrollregion *newscroll;
1955 if (term->scrolltail &&
1956 term->scrolltail->topline == topline &&
1957 term->scrolltail->botline == botline) {
1958 term->scrolltail->lines += lines;
1960 newscroll = snew(struct scrollregion);
1961 newscroll->topline = topline;
1962 newscroll->botline = botline;
1963 newscroll->lines = lines;
1964 newscroll->next = NULL;
1966 if (!term->scrollhead)
1967 term->scrollhead = newscroll;
1969 term->scrolltail->next = newscroll;
1970 term->scrolltail = newscroll;
1975 * Scroll the physical display, and our conception of it in disptext.
1977 static void scroll_display(Terminal *term, int topline, int botline, int lines)
1979 int distance, nlines, i, j;
1981 distance = lines > 0 ? lines : -lines;
1982 nlines = botline - topline + 1 - distance;
1984 for (i = 0; i < nlines; i++)
1985 for (j = 0; j < term->cols; j++)
1986 copy_termchar(term->disptext[i], j,
1987 term->disptext[i+distance]->chars+j);
1988 if (term->dispcursy >= 0 &&
1989 term->dispcursy >= topline + distance &&
1990 term->dispcursy < topline + distance + nlines)
1991 term->dispcursy -= distance;
1992 for (i = 0; i < distance; i++)
1993 for (j = 0; j < term->cols; j++)
1994 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
1996 for (i = nlines; i-- ;)
1997 for (j = 0; j < term->cols; j++)
1998 copy_termchar(term->disptext[i+distance], j,
1999 term->disptext[i]->chars+j);
2000 if (term->dispcursy >= 0 &&
2001 term->dispcursy >= topline &&
2002 term->dispcursy < topline + nlines)
2003 term->dispcursy += distance;
2004 for (i = 0; i < distance; i++)
2005 for (j = 0; j < term->cols; j++)
2006 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
2008 save_scroll(term, topline, botline, lines);
2010 #endif /* OPTIMISE_SCROLL */
2013 * Move the cursor to a given position, clipping at boundaries. We
2014 * may or may not want to clip at the scroll margin: marg_clip is 0
2015 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2016 * even _being_ outside the margins.
2018 static void move(Terminal *term, int x, int y, int marg_clip)
2022 if (x >= term->cols)
2025 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2028 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2034 if (y >= term->rows)
2038 term->wrapnext = FALSE;
2042 * Save or restore the cursor and SGR mode.
2044 static void save_cursor(Terminal *term, int save)
2047 term->savecurs = term->curs;
2048 term->save_attr = term->curr_attr;
2049 term->save_cset = term->cset;
2050 term->save_utf = term->utf;
2051 term->save_wnext = term->wrapnext;
2052 term->save_csattr = term->cset_attr[term->cset];
2053 term->save_sco_acs = term->sco_acs;
2055 term->curs = term->savecurs;
2056 /* Make sure the window hasn't shrunk since the save */
2057 if (term->curs.x >= term->cols)
2058 term->curs.x = term->cols - 1;
2059 if (term->curs.y >= term->rows)
2060 term->curs.y = term->rows - 1;
2062 term->curr_attr = term->save_attr;
2063 term->cset = term->save_cset;
2064 term->utf = term->save_utf;
2065 term->wrapnext = term->save_wnext;
2067 * wrapnext might reset to False if the x position is no
2068 * longer at the rightmost edge.
2070 if (term->wrapnext && term->curs.x < term->cols-1)
2071 term->wrapnext = FALSE;
2072 term->cset_attr[term->cset] = term->save_csattr;
2073 term->sco_acs = term->save_sco_acs;
2074 set_erase_char(term);
2079 * This function is called before doing _anything_ which affects
2080 * only part of a line of text. It is used to mark the boundary
2081 * between two character positions, and it indicates that some sort
2082 * of effect is going to happen on only one side of that boundary.
2084 * The effect of this function is to check whether a CJK
2085 * double-width character is straddling the boundary, and to remove
2086 * it and replace it with two spaces if so. (Of course, one or
2087 * other of those spaces is then likely to be replaced with
2088 * something else again, as a result of whatever happens next.)
2090 * Also, if the boundary is at the right-hand _edge_ of the screen,
2091 * it implies something deliberate is being done to the rightmost
2092 * column position; hence we must clear LATTR_WRAPPED2.
2094 * The input to the function is the coordinates of the _second_
2095 * character of the pair.
2097 static void check_boundary(Terminal *term, int x, int y)
2101 /* Validate input coordinates, just in case. */
2102 if (x == 0 || x > term->cols)
2105 ldata = scrlineptr(y);
2106 if (x == term->cols) {
2107 ldata->lattr &= ~LATTR_WRAPPED2;
2109 if (ldata->chars[x].chr == UCSWIDE) {
2110 clear_cc(ldata, x-1);
2112 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2113 ldata->chars[x] = ldata->chars[x-1];
2119 * Erase a large portion of the screen: the whole screen, or the
2120 * whole line, or parts thereof.
2122 static void erase_lots(Terminal *term,
2123 int line_only, int from_begin, int to_end)
2127 int erasing_lines_from_top = 0;
2130 start.y = term->curs.y;
2132 end.y = term->curs.y + 1;
2134 erase_lattr = FALSE;
2149 if (!from_begin || !to_end)
2150 check_boundary(term, term->curs.x, term->curs.y);
2151 check_selection(term, start, end);
2153 /* Clear screen also forces a full window redraw, just in case. */
2154 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2155 term_invalidate(term);
2157 /* Lines scrolled away shouldn't be brought back on if the terminal
2159 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2160 erasing_lines_from_top = 1;
2162 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2163 /* If it's a whole number of lines, starting at the top, and
2164 * we're fully erasing them, erase by scrolling and keep the
2165 * lines in the scrollback. */
2166 int scrolllines = end.y;
2167 if (end.y == term->rows) {
2168 /* Shrink until we find a non-empty row.*/
2169 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2171 if (scrolllines > 0)
2172 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2174 termline *ldata = scrlineptr(start.y);
2175 while (poslt(start, end)) {
2176 if (start.x == term->cols) {
2178 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2180 ldata->lattr = LATTR_NORM;
2182 copy_termchar(ldata, start.x, &term->erase_char);
2184 if (incpos(start) && start.y < term->rows) {
2185 ldata = scrlineptr(start.y);
2190 /* After an erase of lines from the top of the screen, we shouldn't
2191 * bring the lines back again if the terminal enlarges (since the user or
2192 * application has explictly thrown them away). */
2193 if (erasing_lines_from_top && !(term->alt_which))
2194 term->tempsblines = 0;
2198 * Insert or delete characters within the current line. n is +ve if
2199 * insertion is desired, and -ve for deletion.
2201 static void insch(Terminal *term, int n)
2203 int dir = (n < 0 ? -1 : +1);
2208 n = (n < 0 ? -n : n);
2209 if (n > term->cols - term->curs.x)
2210 n = term->cols - term->curs.x;
2211 m = term->cols - term->curs.x - n;
2212 cursplus.y = term->curs.y;
2213 cursplus.x = term->curs.x + n;
2214 check_selection(term, term->curs, cursplus);
2215 check_boundary(term, term->curs.x, term->curs.y);
2217 check_boundary(term, term->curs.x + n, term->curs.y);
2218 ldata = scrlineptr(term->curs.y);
2220 for (j = 0; j < m; j++)
2221 move_termchar(ldata,
2222 ldata->chars + term->curs.x + j,
2223 ldata->chars + term->curs.x + j + n);
2225 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2228 move_termchar(ldata,
2229 ldata->chars + term->curs.x + j + n,
2230 ldata->chars + term->curs.x + j);
2232 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2237 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2238 * whether the mode is a DEC private one or a normal one.)
2240 static void toggle_mode(Terminal *term, int mode, int query, int state)
2244 case 1: /* DECCKM: application cursor keys */
2245 term->app_cursor_keys = state;
2247 case 2: /* DECANM: VT52 mode */
2248 term->vt52_mode = !state;
2249 if (term->vt52_mode) {
2250 term->blink_is_real = FALSE;
2251 term->vt52_bold = FALSE;
2253 term->blink_is_real = term->cfg.blinktext;
2255 term_schedule_tblink(term);
2257 case 3: /* DECCOLM: 80/132 columns */
2259 if (!term->cfg.no_remote_resize)
2260 request_resize(term->frontend, state ? 132 : 80, term->rows);
2261 term->reset_132 = state;
2262 term->alt_t = term->marg_t = 0;
2263 term->alt_b = term->marg_b = term->rows - 1;
2264 move(term, 0, 0, 0);
2265 erase_lots(term, FALSE, TRUE, TRUE);
2267 case 5: /* DECSCNM: reverse video */
2269 * Toggle reverse video. If we receive an OFF within the
2270 * visual bell timeout period after an ON, we trigger an
2271 * effective visual bell, so that ESC[?5hESC[?5l will
2272 * always be an actually _visible_ visual bell.
2274 if (term->rvideo && !state) {
2275 /* This is an OFF, so set up a vbell */
2276 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2277 } else if (!term->rvideo && state) {
2278 /* This is an ON, so we notice the time and save it. */
2279 term->rvbell_startpoint = GETTICKCOUNT();
2281 term->rvideo = state;
2282 seen_disp_event(term);
2284 case 6: /* DECOM: DEC origin mode */
2285 term->dec_om = state;
2287 case 7: /* DECAWM: auto wrap */
2290 case 8: /* DECARM: auto key repeat */
2291 term->repeat_off = !state;
2293 case 10: /* DECEDM: set local edit mode */
2294 term->term_editing = state;
2295 if (term->ldisc) /* cause ldisc to notice changes */
2296 ldisc_send(term->ldisc, NULL, 0, 0);
2298 case 25: /* DECTCEM: enable/disable cursor */
2299 compatibility2(OTHER, VT220);
2300 term->cursor_on = state;
2301 seen_disp_event(term);
2303 case 47: /* alternate screen */
2304 compatibility(OTHER);
2306 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2309 case 1000: /* xterm mouse 1 */
2310 term->xterm_mouse = state ? 1 : 0;
2311 set_raw_mouse_mode(term->frontend, state);
2313 case 1002: /* xterm mouse 2 */
2314 term->xterm_mouse = state ? 2 : 0;
2315 set_raw_mouse_mode(term->frontend, state);
2317 case 1047: /* alternate screen */
2318 compatibility(OTHER);
2320 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2323 case 1048: /* save/restore cursor */
2324 if (!term->cfg.no_alt_screen)
2325 save_cursor(term, state);
2326 if (!state) seen_disp_event(term);
2328 case 1049: /* cursor & alternate screen */
2329 if (state && !term->cfg.no_alt_screen)
2330 save_cursor(term, state);
2331 if (!state) seen_disp_event(term);
2332 compatibility(OTHER);
2334 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2335 if (!state && !term->cfg.no_alt_screen)
2336 save_cursor(term, state);
2341 case 4: /* IRM: set insert mode */
2342 compatibility(VT102);
2343 term->insert = state;
2345 case 12: /* SRM: set echo mode */
2346 term->term_echoing = !state;
2347 if (term->ldisc) /* cause ldisc to notice changes */
2348 ldisc_send(term->ldisc, NULL, 0, 0);
2350 case 20: /* LNM: Return sends ... */
2351 term->cr_lf_return = state;
2353 case 34: /* WYULCURM: Make cursor BIG */
2354 compatibility2(OTHER, VT220);
2355 term->big_cursor = !state;
2360 * Process an OSC sequence: set window title or icon name.
2362 static void do_osc(Terminal *term)
2365 while (term->osc_strlen--)
2366 term->wordness[(unsigned char)
2367 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2369 term->osc_string[term->osc_strlen] = '\0';
2370 switch (term->esc_args[0]) {
2373 if (!term->cfg.no_remote_wintitle)
2374 set_icon(term->frontend, term->osc_string);
2375 if (term->esc_args[0] == 1)
2377 /* fall through: parameter 0 means set both */
2380 if (!term->cfg.no_remote_wintitle)
2381 set_title(term->frontend, term->osc_string);
2388 * ANSI printing routines.
2390 static void term_print_setup(Terminal *term)
2392 bufchain_clear(&term->printer_buf);
2393 term->print_job = printer_start_job(term->cfg.printer);
2395 static void term_print_flush(Terminal *term)
2400 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2401 bufchain_prefix(&term->printer_buf, &data, &len);
2404 printer_job_data(term->print_job, data, len);
2405 bufchain_consume(&term->printer_buf, len);
2408 static void term_print_finish(Terminal *term)
2414 if (!term->printing && !term->only_printing)
2415 return; /* we need do nothing */
2417 term_print_flush(term);
2418 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2419 bufchain_prefix(&term->printer_buf, &data, &len);
2421 if (c == '\033' || c == '\233') {
2422 bufchain_consume(&term->printer_buf, size);
2425 printer_job_data(term->print_job, &c, 1);
2426 bufchain_consume(&term->printer_buf, 1);
2429 printer_finish_job(term->print_job);
2430 term->print_job = NULL;
2431 term->printing = term->only_printing = FALSE;
2435 * Remove everything currently in `inbuf' and stick it up on the
2436 * in-memory display. There's a big state machine in here to
2437 * process escape sequences...
2439 static void term_out(Terminal *term)
2443 unsigned char localbuf[256], *chars;
2448 chars = NULL; /* placate compiler warnings */
2449 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
2453 bufchain_prefix(&term->inbuf, &ret, &nchars);
2454 if (nchars > sizeof(localbuf))
2455 nchars = sizeof(localbuf);
2456 memcpy(localbuf, ret, nchars);
2457 bufchain_consume(&term->inbuf, nchars);
2459 assert(chars != NULL);
2465 * Optionally log the session traffic to a file. Useful for
2466 * debugging and possibly also useful for actual logging.
2468 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2469 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2475 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2476 * be able to display 8-bit characters, but I'll let that go 'cause
2481 * If we're printing, add the character to the printer
2484 if (term->printing) {
2485 bufchain_add(&term->printer_buf, &c, 1);
2488 * If we're in print-only mode, we use a much simpler
2489 * state machine designed only to recognise the ESC[4i
2490 * termination sequence.
2492 if (term->only_printing) {
2494 term->print_state = 1;
2495 else if (c == (unsigned char)'\233')
2496 term->print_state = 2;
2497 else if (c == '[' && term->print_state == 1)
2498 term->print_state = 2;
2499 else if (c == '4' && term->print_state == 2)
2500 term->print_state = 3;
2501 else if (c == 'i' && term->print_state == 3)
2502 term->print_state = 4;
2504 term->print_state = 0;
2505 if (term->print_state == 4) {
2506 term_print_finish(term);
2512 /* First see about all those translations. */
2513 if (term->termstate == TOPLEVEL) {
2515 switch (term->utf_state) {
2518 /* UTF-8 must be stateless so we ignore iso2022. */
2519 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2520 c = term->ucsdata->unitab_ctrl[c];
2521 else c = ((unsigned char)c) | CSET_ASCII;
2523 } else if ((c & 0xe0) == 0xc0) {
2524 term->utf_size = term->utf_state = 1;
2525 term->utf_char = (c & 0x1f);
2526 } else if ((c & 0xf0) == 0xe0) {
2527 term->utf_size = term->utf_state = 2;
2528 term->utf_char = (c & 0x0f);
2529 } else if ((c & 0xf8) == 0xf0) {
2530 term->utf_size = term->utf_state = 3;
2531 term->utf_char = (c & 0x07);
2532 } else if ((c & 0xfc) == 0xf8) {
2533 term->utf_size = term->utf_state = 4;
2534 term->utf_char = (c & 0x03);
2535 } else if ((c & 0xfe) == 0xfc) {
2536 term->utf_size = term->utf_state = 5;
2537 term->utf_char = (c & 0x01);
2548 if ((c & 0xC0) != 0x80) {
2551 term->utf_state = 0;
2554 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2555 if (--term->utf_state)
2560 /* Is somebody trying to be evil! */
2562 (c < 0x800 && term->utf_size >= 2) ||
2563 (c < 0x10000 && term->utf_size >= 3) ||
2564 (c < 0x200000 && term->utf_size >= 4) ||
2565 (c < 0x4000000 && term->utf_size >= 5))
2568 /* Unicode line separator and paragraph separator are CR-LF */
2569 if (c == 0x2028 || c == 0x2029)
2572 /* High controls are probably a Baaad idea too. */
2576 /* The UTF-16 surrogates are not nice either. */
2577 /* The standard give the option of decoding these:
2578 * I don't want to! */
2579 if (c >= 0xD800 && c < 0xE000)
2582 /* ISO 10646 characters now limited to UTF-16 range. */
2586 /* This is currently a TagPhobic application.. */
2587 if (c >= 0xE0000 && c <= 0xE007F)
2590 /* U+FEFF is best seen as a null. */
2593 /* But U+FFFE is an error. */
2594 if (c == 0xFFFE || c == 0xFFFF)
2599 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2600 else if(term->sco_acs &&
2601 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2603 if (term->sco_acs == 2) c |= 0x80;
2606 switch (term->cset_attr[term->cset]) {
2608 * Linedraw characters are different from 'ESC ( B'
2609 * only for a small range. For ones outside that
2610 * range, make sure we use the same font as well as
2611 * the same encoding.
2614 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2615 c = term->ucsdata->unitab_ctrl[c];
2617 c = ((unsigned char) c) | CSET_LINEDRW;
2621 /* If UK-ASCII, make the '#' a LineDraw Pound */
2623 c = '}' | CSET_LINEDRW;
2626 /*FALLTHROUGH*/ case CSET_ASCII:
2627 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2628 c = term->ucsdata->unitab_ctrl[c];
2630 c = ((unsigned char) c) | CSET_ASCII;
2633 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2640 * How about C1 controls?
2641 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2643 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2644 !term->vt52_mode && has_compat(VT220)) {
2648 term->termstate = SEEN_ESC;
2649 term->esc_query = FALSE;
2650 c = '@' + (c & 0x1F);
2654 /* Or the GL control. */
2655 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2656 if (term->curs.x && !term->wrapnext)
2658 term->wrapnext = FALSE;
2659 /* destructive backspace might be disabled */
2660 if (!term->cfg.no_dbackspace) {
2661 check_boundary(term, term->curs.x, term->curs.y);
2662 check_boundary(term, term->curs.x+1, term->curs.y);
2663 copy_termchar(scrlineptr(term->curs.y),
2664 term->curs.x, &term->erase_char);
2667 /* Or normal C0 controls. */
2668 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2670 case '\005': /* ENQ: terminal type query */
2672 * Strictly speaking this is VT100 but a VT100 defaults to
2673 * no response. Other terminals respond at their option.
2675 * Don't put a CR in the default string as this tends to
2676 * upset some weird software.
2678 compatibility(ANSIMIN);
2680 char abuf[256], *s, *d;
2682 for (s = term->cfg.answerback, d = abuf; *s; s++) {
2684 if (*s >= 'a' && *s <= 'z')
2685 *d++ = (*s - ('a' - 1));
2686 else if ((*s >= '@' && *s <= '_') ||
2687 *s == '?' || (*s & 0x80))
2692 } else if (*s == '^') {
2697 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2701 case '\007': /* BEL: Bell */
2703 struct beeptime *newbeep;
2704 unsigned long ticks;
2706 ticks = GETTICKCOUNT();
2708 if (!term->beep_overloaded) {
2709 newbeep = snew(struct beeptime);
2710 newbeep->ticks = ticks;
2711 newbeep->next = NULL;
2712 if (!term->beephead)
2713 term->beephead = newbeep;
2715 term->beeptail->next = newbeep;
2716 term->beeptail = newbeep;
2721 * Throw out any beeps that happened more than
2724 while (term->beephead &&
2725 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2726 struct beeptime *tmp = term->beephead;
2727 term->beephead = tmp->next;
2729 if (!term->beephead)
2730 term->beeptail = NULL;
2734 if (term->cfg.bellovl && term->beep_overloaded &&
2735 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2737 * If we're currently overloaded and the
2738 * last beep was more than s seconds ago,
2739 * leave overload mode.
2741 term->beep_overloaded = FALSE;
2742 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2743 term->nbeeps >= term->cfg.bellovl_n) {
2745 * Now, if we have n or more beeps
2746 * remaining in the queue, go into overload
2749 term->beep_overloaded = TRUE;
2751 term->lastbeep = ticks;
2754 * Perform an actual beep if we're not overloaded.
2756 if (!term->cfg.bellovl || !term->beep_overloaded) {
2757 beep(term->frontend, term->cfg.beep);
2759 if (term->cfg.beep == BELL_VISUAL) {
2760 term_schedule_vbell(term, FALSE, 0);
2763 seen_disp_event(term);
2766 case '\b': /* BS: Back space */
2767 if (term->curs.x == 0 &&
2768 (term->curs.y == 0 || term->wrap == 0))
2770 else if (term->curs.x == 0 && term->curs.y > 0)
2771 term->curs.x = term->cols - 1, term->curs.y--;
2772 else if (term->wrapnext)
2773 term->wrapnext = FALSE;
2776 seen_disp_event(term);
2778 case '\016': /* LS1: Locking-shift one */
2779 compatibility(VT100);
2782 case '\017': /* LS0: Locking-shift zero */
2783 compatibility(VT100);
2786 case '\033': /* ESC: Escape */
2787 if (term->vt52_mode)
2788 term->termstate = VT52_ESC;
2790 compatibility(ANSIMIN);
2791 term->termstate = SEEN_ESC;
2792 term->esc_query = FALSE;
2795 case '\015': /* CR: Carriage return */
2797 term->wrapnext = FALSE;
2798 seen_disp_event(term);
2799 term->paste_hold = 0;
2801 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2803 case '\014': /* FF: Form feed */
2804 if (has_compat(SCOANSI)) {
2805 move(term, 0, 0, 0);
2806 erase_lots(term, FALSE, FALSE, TRUE);
2808 term->wrapnext = FALSE;
2809 seen_disp_event(term);
2812 case '\013': /* VT: Line tabulation */
2813 compatibility(VT100);
2814 case '\012': /* LF: Line feed */
2815 if (term->curs.y == term->marg_b)
2816 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2817 else if (term->curs.y < term->rows - 1)
2819 if (term->cfg.lfhascr)
2821 term->wrapnext = FALSE;
2822 seen_disp_event(term);
2823 term->paste_hold = 0;
2825 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2827 case '\t': /* HT: Character tabulation */
2829 pos old_curs = term->curs;
2830 termline *ldata = scrlineptr(term->curs.y);
2834 } while (term->curs.x < term->cols - 1 &&
2835 !term->tabs[term->curs.x]);
2837 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2838 if (term->curs.x >= term->cols / 2)
2839 term->curs.x = term->cols / 2 - 1;
2841 if (term->curs.x >= term->cols)
2842 term->curs.x = term->cols - 1;
2845 check_selection(term, old_curs, term->curs);
2847 seen_disp_event(term);
2851 switch (term->termstate) {
2853 /* Only graphic characters get this far;
2854 * ctrls are stripped above */
2856 termline *cline = scrlineptr(term->curs.y);
2861 width = (term->cfg.cjk_ambig_wide ?
2862 mk_wcwidth_cjk((wchar_t) c) :
2863 mk_wcwidth((wchar_t) c));
2865 if (term->wrapnext && term->wrap && width > 0) {
2866 cline->lattr |= LATTR_WRAPPED;
2867 if (term->curs.y == term->marg_b)
2868 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2869 else if (term->curs.y < term->rows - 1)
2872 term->wrapnext = FALSE;
2873 cline = scrlineptr(term->curs.y);
2875 if (term->insert && width > 0)
2877 if (term->selstate != NO_SELECTION) {
2878 pos cursplus = term->curs;
2880 check_selection(term, term->curs, cursplus);
2882 if (((c & CSET_MASK) == CSET_ASCII ||
2883 (c & CSET_MASK) == 0) &&
2885 logtraffic(term->logctx, (unsigned char) c,
2891 * If we're about to display a double-width
2892 * character starting in the rightmost
2893 * column, then we do something special
2894 * instead. We must print a space in the
2895 * last column of the screen, then wrap;
2896 * and we also set LATTR_WRAPPED2 which
2897 * instructs subsequent cut-and-pasting not
2898 * only to splice this line to the one
2899 * after it, but to ignore the space in the
2900 * last character position as well.
2901 * (Because what was actually output to the
2902 * terminal was presumably just a sequence
2903 * of CJK characters, and we don't want a
2904 * space to be pasted in the middle of
2905 * those just because they had the
2906 * misfortune to start in the wrong parity
2907 * column. xterm concurs.)
2909 check_boundary(term, term->curs.x, term->curs.y);
2910 check_boundary(term, term->curs.x+2, term->curs.y);
2911 if (term->curs.x == term->cols-1) {
2912 copy_termchar(cline, term->curs.x,
2914 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2915 if (term->curs.y == term->marg_b)
2916 scroll(term, term->marg_t, term->marg_b,
2918 else if (term->curs.y < term->rows - 1)
2921 cline = scrlineptr(term->curs.y);
2922 /* Now we must check_boundary again, of course. */
2923 check_boundary(term, term->curs.x, term->curs.y);
2924 check_boundary(term, term->curs.x+2, term->curs.y);
2928 clear_cc(cline, term->curs.x);
2929 cline->chars[term->curs.x].chr = c;
2930 cline->chars[term->curs.x].attr = term->curr_attr;
2935 clear_cc(cline, term->curs.x);
2936 cline->chars[term->curs.x].chr = UCSWIDE;
2937 cline->chars[term->curs.x].attr = term->curr_attr;
2941 check_boundary(term, term->curs.x, term->curs.y);
2942 check_boundary(term, term->curs.x+1, term->curs.y);
2945 clear_cc(cline, term->curs.x);
2946 cline->chars[term->curs.x].chr = c;
2947 cline->chars[term->curs.x].attr = term->curr_attr;
2951 if (term->curs.x > 0) {
2952 int x = term->curs.x - 1;
2954 /* If we're in wrapnext state, the character
2955 * to combine with is _here_, not to our left. */
2960 * If the previous character is
2961 * UCSWIDE, back up another one.
2963 if (cline->chars[x].chr == UCSWIDE) {
2968 add_cc(cline, x, c);
2969 seen_disp_event(term);
2976 if (term->curs.x == term->cols) {
2978 term->wrapnext = TRUE;
2979 if (term->wrap && term->vt52_mode) {
2980 cline->lattr |= LATTR_WRAPPED;
2981 if (term->curs.y == term->marg_b)
2982 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2983 else if (term->curs.y < term->rows - 1)
2986 term->wrapnext = FALSE;
2989 seen_disp_event(term);
2995 * This state is virtually identical to SEEN_ESC, with the
2996 * exception that we have an OSC sequence in the pipeline,
2997 * and _if_ we see a backslash, we process it.
3001 term->termstate = TOPLEVEL;
3004 /* else fall through */
3006 if (c >= ' ' && c <= '/') {
3007 if (term->esc_query)
3008 term->esc_query = -1;
3010 term->esc_query = c;
3013 term->termstate = TOPLEVEL;
3014 switch (ANSI(c, term->esc_query)) {
3015 case '[': /* enter CSI mode */
3016 term->termstate = SEEN_CSI;
3017 term->esc_nargs = 1;
3018 term->esc_args[0] = ARG_DEFAULT;
3019 term->esc_query = FALSE;
3021 case ']': /* OSC: xterm escape sequences */
3022 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3023 compatibility(OTHER);
3024 term->termstate = SEEN_OSC;
3025 term->esc_args[0] = 0;
3027 case '7': /* DECSC: save cursor */
3028 compatibility(VT100);
3029 save_cursor(term, TRUE);
3031 case '8': /* DECRC: restore cursor */
3032 compatibility(VT100);
3033 save_cursor(term, FALSE);
3034 seen_disp_event(term);
3036 case '=': /* DECKPAM: Keypad application mode */
3037 compatibility(VT100);
3038 term->app_keypad_keys = TRUE;
3040 case '>': /* DECKPNM: Keypad numeric mode */
3041 compatibility(VT100);
3042 term->app_keypad_keys = FALSE;
3044 case 'D': /* IND: exactly equivalent to LF */
3045 compatibility(VT100);
3046 if (term->curs.y == term->marg_b)
3047 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3048 else if (term->curs.y < term->rows - 1)
3050 term->wrapnext = FALSE;
3051 seen_disp_event(term);
3053 case 'E': /* NEL: exactly equivalent to CR-LF */
3054 compatibility(VT100);
3056 if (term->curs.y == term->marg_b)
3057 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3058 else if (term->curs.y < term->rows - 1)
3060 term->wrapnext = FALSE;
3061 seen_disp_event(term);
3063 case 'M': /* RI: reverse index - backwards LF */
3064 compatibility(VT100);
3065 if (term->curs.y == term->marg_t)
3066 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3067 else if (term->curs.y > 0)
3069 term->wrapnext = FALSE;
3070 seen_disp_event(term);
3072 case 'Z': /* DECID: terminal type query */
3073 compatibility(VT100);
3075 ldisc_send(term->ldisc, term->id_string,
3076 strlen(term->id_string), 0);
3078 case 'c': /* RIS: restore power-on settings */
3079 compatibility(VT100);
3081 if (term->ldisc) /* cause ldisc to notice changes */
3082 ldisc_send(term->ldisc, NULL, 0, 0);
3083 if (term->reset_132) {
3084 if (!term->cfg.no_remote_resize)
3085 request_resize(term->frontend, 80, term->rows);
3086 term->reset_132 = 0;
3089 seen_disp_event(term);
3091 case 'H': /* HTS: set a tab */
3092 compatibility(VT100);
3093 term->tabs[term->curs.x] = TRUE;
3096 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3097 compatibility(VT100);
3103 for (i = 0; i < term->rows; i++) {
3104 ldata = scrlineptr(i);
3105 for (j = 0; j < term->cols; j++) {
3106 copy_termchar(ldata, j,
3107 &term->basic_erase_char);
3108 ldata->chars[j].chr = 'E';
3110 ldata->lattr = LATTR_NORM;
3113 seen_disp_event(term);
3114 scrtop.x = scrtop.y = 0;
3116 scrbot.y = term->rows;
3117 check_selection(term, scrtop, scrbot);
3121 case ANSI('3', '#'):
3122 case ANSI('4', '#'):
3123 case ANSI('5', '#'):
3124 case ANSI('6', '#'):
3125 compatibility(VT100);
3129 switch (ANSI(c, term->esc_query)) {
3130 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3133 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3136 case ANSI('5', '#'): /* DECSWL: normal */
3137 nlattr = LATTR_NORM;
3139 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3140 nlattr = LATTR_WIDE;
3143 scrlineptr(term->curs.y)->lattr = nlattr;
3146 /* GZD4: G0 designate 94-set */
3147 case ANSI('A', '('):
3148 compatibility(VT100);
3149 if (!term->cfg.no_remote_charset)
3150 term->cset_attr[0] = CSET_GBCHR;
3152 case ANSI('B', '('):
3153 compatibility(VT100);
3154 if (!term->cfg.no_remote_charset)
3155 term->cset_attr[0] = CSET_ASCII;
3157 case ANSI('0', '('):
3158 compatibility(VT100);
3159 if (!term->cfg.no_remote_charset)
3160 term->cset_attr[0] = CSET_LINEDRW;
3162 case ANSI('U', '('):
3163 compatibility(OTHER);
3164 if (!term->cfg.no_remote_charset)
3165 term->cset_attr[0] = CSET_SCOACS;
3167 /* G1D4: G1-designate 94-set */
3168 case ANSI('A', ')'):
3169 compatibility(VT100);
3170 if (!term->cfg.no_remote_charset)
3171 term->cset_attr[1] = CSET_GBCHR;
3173 case ANSI('B', ')'):
3174 compatibility(VT100);
3175 if (!term->cfg.no_remote_charset)
3176 term->cset_attr[1] = CSET_ASCII;
3178 case ANSI('0', ')'):
3179 compatibility(VT100);
3180 if (!term->cfg.no_remote_charset)
3181 term->cset_attr[1] = CSET_LINEDRW;
3183 case ANSI('U', ')'):
3184 compatibility(OTHER);
3185 if (!term->cfg.no_remote_charset)
3186 term->cset_attr[1] = CSET_SCOACS;
3188 /* DOCS: Designate other coding system */
3189 case ANSI('8', '%'): /* Old Linux code */
3190 case ANSI('G', '%'):
3191 compatibility(OTHER);
3192 if (!term->cfg.no_remote_charset)
3195 case ANSI('@', '%'):
3196 compatibility(OTHER);
3197 if (!term->cfg.no_remote_charset)
3203 term->termstate = TOPLEVEL; /* default */
3205 if (term->esc_nargs <= ARGS_MAX) {
3206 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3207 term->esc_args[term->esc_nargs - 1] = 0;
3208 term->esc_args[term->esc_nargs - 1] =
3209 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3211 term->termstate = SEEN_CSI;
3212 } else if (c == ';') {
3213 if (++term->esc_nargs <= ARGS_MAX)
3214 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3215 term->termstate = SEEN_CSI;
3216 } else if (c < '@') {
3217 if (term->esc_query)
3218 term->esc_query = -1;
3220 term->esc_query = TRUE;
3222 term->esc_query = c;
3223 term->termstate = SEEN_CSI;
3225 switch (ANSI(c, term->esc_query)) {
3226 case 'A': /* CUU: move up N lines */
3227 move(term, term->curs.x,
3228 term->curs.y - def(term->esc_args[0], 1), 1);
3229 seen_disp_event(term);
3231 case 'e': /* VPR: move down N lines */
3232 compatibility(ANSI);
3234 case 'B': /* CUD: Cursor down */
3235 move(term, term->curs.x,
3236 term->curs.y + def(term->esc_args[0], 1), 1);
3237 seen_disp_event(term);
3239 case ANSI('c', '>'): /* DA: report xterm version */
3240 compatibility(OTHER);
3241 /* this reports xterm version 136 so that VIM can
3242 use the drag messages from the mouse reporting */
3244 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3246 case 'a': /* HPR: move right N cols */
3247 compatibility(ANSI);
3249 case 'C': /* CUF: Cursor right */
3250 move(term, term->curs.x + def(term->esc_args[0], 1),
3252 seen_disp_event(term);
3254 case 'D': /* CUB: move left N cols */
3255 move(term, term->curs.x - def(term->esc_args[0], 1),
3257 seen_disp_event(term);
3259 case 'E': /* CNL: move down N lines and CR */
3260 compatibility(ANSI);
3262 term->curs.y + def(term->esc_args[0], 1), 1);
3263 seen_disp_event(term);
3265 case 'F': /* CPL: move up N lines and CR */
3266 compatibility(ANSI);
3268 term->curs.y - def(term->esc_args[0], 1), 1);
3269 seen_disp_event(term);
3272 case '`': /* HPA: set horizontal posn */
3273 compatibility(ANSI);
3274 move(term, def(term->esc_args[0], 1) - 1,
3276 seen_disp_event(term);
3278 case 'd': /* VPA: set vertical posn */
3279 compatibility(ANSI);
3280 move(term, term->curs.x,
3281 ((term->dec_om ? term->marg_t : 0) +
3282 def(term->esc_args[0], 1) - 1),
3283 (term->dec_om ? 2 : 0));
3284 seen_disp_event(term);
3287 case 'f': /* HVP: set horz and vert posns at once */
3288 if (term->esc_nargs < 2)
3289 term->esc_args[1] = ARG_DEFAULT;
3290 move(term, def(term->esc_args[1], 1) - 1,
3291 ((term->dec_om ? term->marg_t : 0) +
3292 def(term->esc_args[0], 1) - 1),
3293 (term->dec_om ? 2 : 0));
3294 seen_disp_event(term);
3296 case 'J': /* ED: erase screen or parts of it */
3298 unsigned int i = def(term->esc_args[0], 0) + 1;
3301 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3304 seen_disp_event(term);
3306 case 'K': /* EL: erase line or parts of it */
3308 unsigned int i = def(term->esc_args[0], 0) + 1;
3311 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3313 seen_disp_event(term);
3315 case 'L': /* IL: insert lines */
3316 compatibility(VT102);
3317 if (term->curs.y <= term->marg_b)
3318 scroll(term, term->curs.y, term->marg_b,
3319 -def(term->esc_args[0], 1), FALSE);
3320 seen_disp_event(term);
3322 case 'M': /* DL: delete lines */
3323 compatibility(VT102);
3324 if (term->curs.y <= term->marg_b)
3325 scroll(term, term->curs.y, term->marg_b,
3326 def(term->esc_args[0], 1),
3328 seen_disp_event(term);
3330 case '@': /* ICH: insert chars */
3331 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3332 compatibility(VT102);
3333 insch(term, def(term->esc_args[0], 1));
3334 seen_disp_event(term);
3336 case 'P': /* DCH: delete chars */
3337 compatibility(VT102);
3338 insch(term, -def(term->esc_args[0], 1));
3339 seen_disp_event(term);
3341 case 'c': /* DA: terminal type query */
3342 compatibility(VT100);
3343 /* This is the response for a VT102 */
3345 ldisc_send(term->ldisc, term->id_string,
3346 strlen(term->id_string), 0);
3348 case 'n': /* DSR: cursor position query */
3350 if (term->esc_args[0] == 6) {
3352 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3354 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3355 } else if (term->esc_args[0] == 5) {
3356 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3360 case 'h': /* SM: toggle modes to high */
3362 compatibility(VT100);
3365 for (i = 0; i < term->esc_nargs; i++)
3366 toggle_mode(term, term->esc_args[i],
3367 term->esc_query, TRUE);
3370 case 'i': /* MC: Media copy */
3372 compatibility(VT100);
3374 if (term->esc_nargs != 1) break;
3375 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3376 term->printing = TRUE;
3377 term->only_printing = !term->esc_query;
3378 term->print_state = 0;
3379 term_print_setup(term);
3380 } else if (term->esc_args[0] == 4 &&
3382 term_print_finish(term);
3386 case 'l': /* RM: toggle modes to low */
3388 compatibility(VT100);
3391 for (i = 0; i < term->esc_nargs; i++)
3392 toggle_mode(term, term->esc_args[i],
3393 term->esc_query, FALSE);
3396 case 'g': /* TBC: clear tabs */
3397 compatibility(VT100);
3398 if (term->esc_nargs == 1) {
3399 if (term->esc_args[0] == 0) {
3400 term->tabs[term->curs.x] = FALSE;
3401 } else if (term->esc_args[0] == 3) {
3403 for (i = 0; i < term->cols; i++)
3404 term->tabs[i] = FALSE;
3408 case 'r': /* DECSTBM: set scroll margins */
3409 compatibility(VT100);
3410 if (term->esc_nargs <= 2) {
3412 top = def(term->esc_args[0], 1) - 1;
3413 bot = (term->esc_nargs <= 1
3414 || term->esc_args[1] == 0 ?
3416 def(term->esc_args[1], term->rows)) - 1;
3417 if (bot >= term->rows)
3418 bot = term->rows - 1;
3419 /* VTTEST Bug 9 - if region is less than 2 lines
3420 * don't change region.
3422 if (bot - top > 0) {
3427 * I used to think the cursor should be
3428 * placed at the top of the newly marginned
3429 * area. Apparently not: VMS TPU falls over
3432 * Well actually it should for
3435 term->curs.y = (term->dec_om ?
3437 seen_disp_event(term);
3441 case 'm': /* SGR: set graphics rendition */
3444 * A VT100 without the AVO only had one
3445 * attribute, either underline or
3446 * reverse video depending on the
3447 * cursor type, this was selected by
3451 * This is sometimes DIM, eg on the
3454 * This is sometimes INVIS various ANSI.
3456 * This like 22 disables BOLD, DIM and INVIS
3458 * The ANSI colours appear on any
3459 * terminal that has colour (obviously)
3460 * but the interaction between sgr0 and
3461 * the colours varies but is usually
3462 * related to the background colour
3463 * erase item. The interaction between
3464 * colour attributes and the mono ones
3465 * is also very implementation
3468 * The 39 and 49 attributes are likely
3469 * to be unimplemented.
3472 for (i = 0; i < term->esc_nargs; i++) {
3473 switch (def(term->esc_args[i], 0)) {
3474 case 0: /* restore defaults */
3475 term->curr_attr = term->default_attr;
3477 case 1: /* enable bold */
3478 compatibility(VT100AVO);
3479 term->curr_attr |= ATTR_BOLD;
3481 case 21: /* (enable double underline) */
3482 compatibility(OTHER);
3483 case 4: /* enable underline */
3484 compatibility(VT100AVO);
3485 term->curr_attr |= ATTR_UNDER;
3487 case 5: /* enable blink */
3488 compatibility(VT100AVO);
3489 term->curr_attr |= ATTR_BLINK;
3491 case 6: /* SCO light bkgrd */
3492 compatibility(SCOANSI);
3493 term->blink_is_real = FALSE;
3494 term->curr_attr |= ATTR_BLINK;
3495 term_schedule_tblink(term);
3497 case 7: /* enable reverse video */
3498 term->curr_attr |= ATTR_REVERSE;
3500 case 10: /* SCO acs off */
3501 compatibility(SCOANSI);
3502 if (term->cfg.no_remote_charset) break;
3503 term->sco_acs = 0; break;
3504 case 11: /* SCO acs on */
3505 compatibility(SCOANSI);
3506 if (term->cfg.no_remote_charset) break;
3507 term->sco_acs = 1; break;
3508 case 12: /* SCO acs on, |0x80 */
3509 compatibility(SCOANSI);
3510 if (term->cfg.no_remote_charset) break;
3511 term->sco_acs = 2; break;
3512 case 22: /* disable bold */
3513 compatibility2(OTHER, VT220);
3514 term->curr_attr &= ~ATTR_BOLD;
3516 case 24: /* disable underline */
3517 compatibility2(OTHER, VT220);
3518 term->curr_attr &= ~ATTR_UNDER;
3520 case 25: /* disable blink */
3521 compatibility2(OTHER, VT220);
3522 term->curr_attr &= ~ATTR_BLINK;
3524 case 27: /* disable reverse video */
3525 compatibility2(OTHER, VT220);
3526 term->curr_attr &= ~ATTR_REVERSE;
3537 term->curr_attr &= ~ATTR_FGMASK;
3539 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3549 /* aixterm-style bright foreground */
3550 term->curr_attr &= ~ATTR_FGMASK;
3552 ((term->esc_args[i] - 90 + 8)
3555 case 39: /* default-foreground */
3556 term->curr_attr &= ~ATTR_FGMASK;
3557 term->curr_attr |= ATTR_DEFFG;
3568 term->curr_attr &= ~ATTR_BGMASK;
3570 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3580 /* aixterm-style bright background */
3581 term->curr_attr &= ~ATTR_BGMASK;
3583 ((term->esc_args[i] - 100 + 8)
3586 case 49: /* default-background */
3587 term->curr_attr &= ~ATTR_BGMASK;
3588 term->curr_attr |= ATTR_DEFBG;
3590 case 38: /* xterm 256-colour mode */
3591 if (i+2 < term->esc_nargs &&
3592 term->esc_args[i+1] == 5) {
3593 term->curr_attr &= ~ATTR_FGMASK;
3595 ((term->esc_args[i+2] & 0xFF)
3600 case 48: /* xterm 256-colour mode */
3601 if (i+2 < term->esc_nargs &&
3602 term->esc_args[i+1] == 5) {
3603 term->curr_attr &= ~ATTR_BGMASK;
3605 ((term->esc_args[i+2] & 0xFF)
3612 set_erase_char(term);
3615 case 's': /* save cursor */
3616 save_cursor(term, TRUE);
3618 case 'u': /* restore cursor */
3619 save_cursor(term, FALSE);
3620 seen_disp_event(term);
3622 case 't': /* DECSLPP: set page size - ie window height */
3624 * VT340/VT420 sequence DECSLPP, DEC only allows values
3625 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3626 * illegal values (eg first arg 1..9) for window changing
3629 if (term->esc_nargs <= 1
3630 && (term->esc_args[0] < 1 ||
3631 term->esc_args[0] >= 24)) {
3632 compatibility(VT340TEXT);
3633 if (!term->cfg.no_remote_resize)
3634 request_resize(term->frontend, term->cols,
3635 def(term->esc_args[0], 24));
3637 } else if (term->esc_nargs >= 1 &&
3638 term->esc_args[0] >= 1 &&
3639 term->esc_args[0] < 24) {
3640 compatibility(OTHER);
3642 switch (term->esc_args[0]) {
3646 set_iconic(term->frontend, FALSE);
3649 set_iconic(term->frontend, TRUE);
3652 if (term->esc_nargs >= 3) {
3653 if (!term->cfg.no_remote_resize)
3654 move_window(term->frontend,
3655 def(term->esc_args[1], 0),
3656 def(term->esc_args[2], 0));
3660 /* We should resize the window to a given
3661 * size in pixels here, but currently our
3662 * resizing code isn't healthy enough to
3667 set_zorder(term->frontend, TRUE);
3670 /* move to bottom */
3671 set_zorder(term->frontend, FALSE);
3674 refresh_window(term->frontend);
3677 if (term->esc_nargs >= 3) {
3678 if (!term->cfg.no_remote_resize)
3679 request_resize(term->frontend,
3680 def(term->esc_args[2], term->cfg.width),
3681 def(term->esc_args[1], term->cfg.height));
3685 if (term->esc_nargs >= 2)
3686 set_zoomed(term->frontend,
3692 ldisc_send(term->ldisc,
3693 is_iconic(term->frontend) ?
3694 "\033[1t" : "\033[2t", 4, 0);
3698 get_window_pos(term->frontend, &x, &y);
3699 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3700 ldisc_send(term->ldisc, buf, len, 0);
3705 get_window_pixels(term->frontend, &x, &y);
3706 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3707 ldisc_send(term->ldisc, buf, len, 0);
3712 len = sprintf(buf, "\033[8;%d;%dt",
3713 term->rows, term->cols);
3714 ldisc_send(term->ldisc, buf, len, 0);
3719 * Hmmm. Strictly speaking we
3720 * should return `the size of the
3721 * screen in characters', but
3722 * that's not easy: (a) window
3723 * furniture being what it is it's
3724 * hard to compute, and (b) in
3725 * resize-font mode maximising the
3726 * window wouldn't change the
3727 * number of characters. *shrug*. I
3728 * think we'll ignore it for the
3729 * moment and see if anyone
3730 * complains, and then ask them
3731 * what they would like it to do.
3736 !term->cfg.no_remote_qtitle) {
3737 p = get_window_title(term->frontend, TRUE);
3739 ldisc_send(term->ldisc, "\033]L", 3, 0);
3740 ldisc_send(term->ldisc, p, len, 0);
3741 ldisc_send(term->ldisc, "\033\\", 2, 0);
3746 !term->cfg.no_remote_qtitle) {
3747 p = get_window_title(term->frontend,FALSE);
3749 ldisc_send(term->ldisc, "\033]l", 3, 0);
3750 ldisc_send(term->ldisc, p, len, 0);
3751 ldisc_send(term->ldisc, "\033\\", 2, 0);
3757 case 'S': /* SU: Scroll up */
3758 compatibility(SCOANSI);
3759 scroll(term, term->marg_t, term->marg_b,
3760 def(term->esc_args[0], 1), TRUE);
3761 term->wrapnext = FALSE;
3762 seen_disp_event(term);
3764 case 'T': /* SD: Scroll down */
3765 compatibility(SCOANSI);
3766 scroll(term, term->marg_t, term->marg_b,
3767 -def(term->esc_args[0], 1), TRUE);
3768 term->wrapnext = FALSE;
3769 seen_disp_event(term);
3771 case ANSI('|', '*'): /* DECSNLS */
3773 * Set number of lines on screen
3774 * VT420 uses VGA like hardware and can
3775 * support any size in reasonable range
3776 * (24..49 AIUI) with no default specified.
3778 compatibility(VT420);
3779 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3780 if (!term->cfg.no_remote_resize)
3781 request_resize(term->frontend, term->cols,
3782 def(term->esc_args[0],
3787 case ANSI('|', '$'): /* DECSCPP */
3789 * Set number of columns per page
3790 * Docs imply range is only 80 or 132, but
3793 compatibility(VT340TEXT);
3794 if (term->esc_nargs <= 1) {
3795 if (!term->cfg.no_remote_resize)
3796 request_resize(term->frontend,
3797 def(term->esc_args[0],
3798 term->cfg.width), term->rows);
3802 case 'X': /* ECH: write N spaces w/o moving cursor */
3803 /* XXX VTTEST says this is vt220, vt510 manual
3805 compatibility(ANSIMIN);
3807 int n = def(term->esc_args[0], 1);
3809 int p = term->curs.x;
3810 termline *cline = scrlineptr(term->curs.y);
3812 if (n > term->cols - term->curs.x)
3813 n = term->cols - term->curs.x;
3814 cursplus = term->curs;
3816 check_boundary(term, term->curs.x, term->curs.y);
3817 check_boundary(term, term->curs.x+n, term->curs.y);
3818 check_selection(term, term->curs, cursplus);
3820 copy_termchar(cline, p++,
3822 seen_disp_event(term);
3825 case 'x': /* DECREQTPARM: report terminal characteristics */
3826 compatibility(VT100);
3829 int i = def(term->esc_args[0], 0);
3830 if (i == 0 || i == 1) {
3831 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3833 ldisc_send(term->ldisc, buf, 20, 0);
3838 compatibility(OTHER);
3840 int i = def(term->esc_args[0], 1);
3841 pos old_curs = term->curs;
3843 for(;i>0 && term->curs.x>0; i--) {
3846 } while (term->curs.x >0 &&
3847 !term->tabs[term->curs.x]);
3849 check_selection(term, old_curs, term->curs);
3852 case ANSI('c', '='): /* Hide or Show Cursor */
3853 compatibility(SCOANSI);
3854 switch(term->esc_args[0]) {
3855 case 0: /* hide cursor */
3856 term->cursor_on = FALSE;
3858 case 1: /* restore cursor */
3859 term->big_cursor = FALSE;
3860 term->cursor_on = TRUE;
3862 case 2: /* block cursor */
3863 term->big_cursor = TRUE;
3864 term->cursor_on = TRUE;
3868 case ANSI('C', '='):
3870 * set cursor start on scanline esc_args[0] and
3871 * end on scanline esc_args[1].If you set
3872 * the bottom scan line to a value less than
3873 * the top scan line, the cursor will disappear.
3875 compatibility(SCOANSI);
3876 if (term->esc_nargs >= 2) {
3877 if (term->esc_args[0] > term->esc_args[1])
3878 term->cursor_on = FALSE;
3880 term->cursor_on = TRUE;
3883 case ANSI('D', '='):
3884 compatibility(SCOANSI);
3885 term->blink_is_real = FALSE;
3886 term_schedule_tblink(term);
3887 if (term->esc_args[0]>=1)
3888 term->curr_attr |= ATTR_BLINK;
3890 term->curr_attr &= ~ATTR_BLINK;
3892 case ANSI('E', '='):
3893 compatibility(SCOANSI);
3894 term->blink_is_real = (term->esc_args[0] >= 1);
3895 term_schedule_tblink(term);
3897 case ANSI('F', '='): /* set normal foreground */
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_FGMASK;
3905 term->curr_attr |= colour;
3906 term->default_attr &= ~ATTR_FGMASK;
3907 term->default_attr |= colour;
3910 case ANSI('G', '='): /* set normal background */
3911 compatibility(SCOANSI);
3912 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3914 (sco2ansicolour[term->esc_args[0] & 0x7] |
3915 (term->esc_args[0] & 0x8)) <<
3917 term->curr_attr &= ~ATTR_BGMASK;
3918 term->curr_attr |= colour;
3919 term->default_attr &= ~ATTR_BGMASK;
3920 term->default_attr |= colour;
3923 case ANSI('L', '='):
3924 compatibility(SCOANSI);
3925 term->use_bce = (term->esc_args[0] <= 0);
3926 set_erase_char(term);
3928 case ANSI('p', '"'): /* DECSCL: set compat level */
3930 * Allow the host to make this emulator a
3931 * 'perfect' VT102. This first appeared in
3932 * the VT220, but we do need to get back to
3933 * PuTTY mode so I won't check it.
3935 * The arg in 40..42,50 are a PuTTY extension.
3936 * The 2nd arg, 8bit vs 7bit is not checked.
3938 * Setting VT102 mode should also change
3939 * the Fkeys to generate PF* codes as a
3940 * real VT102 has no Fkeys. The VT220 does
3941 * this, F11..F13 become ESC,BS,LF other
3942 * Fkeys send nothing.
3944 * Note ESC c will NOT change this!
3947 switch (term->esc_args[0]) {
3949 term->compatibility_level &= ~TM_VTXXX;
3950 term->compatibility_level |= TM_VT102;
3953 term->compatibility_level &= ~TM_VTXXX;
3954 term->compatibility_level |= TM_VT220;
3958 if (term->esc_args[0] > 60 &&
3959 term->esc_args[0] < 70)
3960 term->compatibility_level |= TM_VTXXX;
3964 term->compatibility_level &= TM_VTXXX;
3967 term->compatibility_level = TM_PUTTY;
3970 term->compatibility_level = TM_SCOANSI;
3974 term->compatibility_level = TM_PUTTY;
3980 /* Change the response to CSI c */
3981 if (term->esc_args[0] == 50) {
3984 strcpy(term->id_string, "\033[?");
3985 for (i = 1; i < term->esc_nargs; i++) {
3987 strcat(term->id_string, ";");
3988 sprintf(lbuf, "%d", term->esc_args[i]);
3989 strcat(term->id_string, lbuf);
3991 strcat(term->id_string, "c");
3994 /* Is this a good idea ?
3995 * Well we should do a soft reset at this point ...
3997 if (!has_compat(VT420) && has_compat(VT100)) {
3998 if (!term->cfg.no_remote_resize) {
3999 if (term->reset_132)
4000 request_resize(132, 24);
4002 request_resize(80, 24);
4010 term->osc_w = FALSE;
4012 case 'P': /* Linux palette sequence */
4013 term->termstate = SEEN_OSC_P;
4014 term->osc_strlen = 0;
4016 case 'R': /* Linux palette reset */
4017 palette_reset(term->frontend);
4018 term_invalidate(term);
4019 term->termstate = TOPLEVEL;
4021 case 'W': /* word-set */
4022 term->termstate = SEEN_OSC_W;
4035 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4039 * Grotty hack to support xterm and DECterm title
4040 * sequences concurrently.
4042 if (term->esc_args[0] == 2) {
4043 term->esc_args[0] = 1;
4046 /* else fall through */
4048 term->termstate = OSC_STRING;
4049 term->osc_strlen = 0;
4054 * This OSC stuff is EVIL. It takes just one character to get into
4055 * sysline mode and it's not initially obvious how to get out.
4056 * So I've added CR and LF as string aborts.
4057 * This shouldn't effect compatibility as I believe embedded
4058 * control characters are supposed to be interpreted (maybe?)
4059 * and they don't display anything useful anyway.
4063 if (c == '\012' || c == '\015') {
4064 term->termstate = TOPLEVEL;
4065 } else if (c == 0234 || c == '\007') {
4067 * These characters terminate the string; ST and BEL
4068 * terminate the sequence and trigger instant
4069 * processing of it, whereas ESC goes back to SEEN_ESC
4070 * mode unless it is followed by \, in which case it is
4071 * synonymous with ST in the first place.
4074 term->termstate = TOPLEVEL;
4075 } else if (c == '\033')
4076 term->termstate = OSC_MAYBE_ST;
4077 else if (term->osc_strlen < OSC_STR_MAX)
4078 term->osc_string[term->osc_strlen++] = (char)c;
4082 int max = (term->osc_strlen == 0 ? 21 : 16);
4084 if ((int)c >= '0' && (int)c <= '9')
4086 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4088 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4091 term->termstate = TOPLEVEL;
4094 term->osc_string[term->osc_strlen++] = val;
4095 if (term->osc_strlen >= 7) {
4096 palette_set(term->frontend, term->osc_string[0],
4097 term->osc_string[1] * 16 + term->osc_string[2],
4098 term->osc_string[3] * 16 + term->osc_string[4],
4099 term->osc_string[5] * 16 + term->osc_string[6]);
4100 term_invalidate(term);
4101 term->termstate = TOPLEVEL;
4117 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4120 term->termstate = OSC_STRING;
4121 term->osc_strlen = 0;
4125 term->termstate = TOPLEVEL;
4126 seen_disp_event(term);
4129 move(term, term->curs.x, term->curs.y - 1, 1);
4132 move(term, term->curs.x, term->curs.y + 1, 1);
4135 move(term, term->curs.x + 1, term->curs.y, 1);
4138 move(term, term->curs.x - 1, term->curs.y, 1);
4141 * From the VT100 Manual
4142 * NOTE: The special graphics characters in the VT100
4143 * are different from those in the VT52
4145 * From VT102 manual:
4146 * 137 _ Blank - Same
4147 * 140 ` Reserved - Humm.
4148 * 141 a Solid rectangle - Similar
4149 * 142 b 1/ - Top half of fraction for the
4150 * 143 c 3/ - subscript numbers below.
4153 * 146 f Degrees - Same
4154 * 147 g Plus or minus - Same
4156 * 151 i Ellipsis (dots)
4159 * 154 l Bar at scan 0
4160 * 155 m Bar at scan 1
4161 * 156 n Bar at scan 2
4162 * 157 o Bar at scan 3 - Similar
4163 * 160 p Bar at scan 4 - Similar
4164 * 161 q Bar at scan 5 - Similar
4165 * 162 r Bar at scan 6 - Same
4166 * 163 s Bar at scan 7 - Similar
4181 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4184 term->cset_attr[term->cset = 0] = CSET_ASCII;
4187 move(term, 0, 0, 0);
4190 if (term->curs.y == 0)
4191 scroll(term, 0, term->rows - 1, -1, TRUE);
4192 else if (term->curs.y > 0)
4194 term->wrapnext = FALSE;
4197 erase_lots(term, FALSE, FALSE, TRUE);
4201 erase_lots(term, TRUE, FALSE, TRUE);
4205 /* XXX Print cursor line */
4208 /* XXX Start controller mode */
4211 /* XXX Stop controller mode */
4215 term->termstate = VT52_Y1;
4219 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4222 term->app_keypad_keys = TRUE;
4225 term->app_keypad_keys = FALSE;
4228 /* XXX This should switch to VT100 mode not current or default
4229 * VT mode. But this will only have effect in a VT220+
4232 term->vt52_mode = FALSE;
4233 term->blink_is_real = term->cfg.blinktext;
4234 term_schedule_tblink(term);
4238 /* XXX Enter auto print mode */
4241 /* XXX Exit auto print mode */
4244 /* XXX Print screen */
4250 /* compatibility(ATARI) */
4251 move(term, 0, 0, 0);
4252 erase_lots(term, FALSE, FALSE, TRUE);
4256 /* compatibility(ATARI) */
4257 if (term->curs.y <= term->marg_b)
4258 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4261 /* compatibility(ATARI) */
4262 if (term->curs.y <= term->marg_b)
4263 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4266 /* compatibility(ATARI) */
4267 term->termstate = VT52_FG;
4270 /* compatibility(ATARI) */
4271 term->termstate = VT52_BG;
4274 /* compatibility(ATARI) */
4275 erase_lots(term, FALSE, TRUE, FALSE);
4279 /* compatibility(ATARI) */
4280 term->cursor_on = TRUE;
4283 /* compatibility(ATARI) */
4284 term->cursor_on = FALSE;
4286 /* case 'j': Save cursor position - broken on ST */
4287 /* case 'k': Restore cursor position */
4289 /* compatibility(ATARI) */
4290 erase_lots(term, TRUE, TRUE, TRUE);
4292 term->wrapnext = FALSE;
4295 /* compatibility(ATARI) */
4296 erase_lots(term, TRUE, TRUE, FALSE);
4299 /* compatibility(ATARI) */
4300 term->curr_attr |= ATTR_REVERSE;
4303 /* compatibility(ATARI) */
4304 term->curr_attr &= ~ATTR_REVERSE;
4306 case 'v': /* wrap Autowrap on - Wyse style */
4307 /* compatibility(ATARI) */
4310 case 'w': /* Autowrap off */
4311 /* compatibility(ATARI) */
4316 /* compatibility(OTHER) */
4317 term->vt52_bold = FALSE;
4318 term->curr_attr = ATTR_DEFAULT;
4319 set_erase_char(term);
4322 /* compatibility(VI50) */
4323 term->curr_attr |= ATTR_UNDER;
4326 /* compatibility(VI50) */
4327 term->curr_attr &= ~ATTR_UNDER;
4330 /* compatibility(VI50) */
4331 term->vt52_bold = TRUE;
4332 term->curr_attr |= ATTR_BOLD;
4335 /* compatibility(VI50) */
4336 term->vt52_bold = FALSE;
4337 term->curr_attr &= ~ATTR_BOLD;
4343 term->termstate = VT52_Y2;
4344 move(term, term->curs.x, c - ' ', 0);
4347 term->termstate = TOPLEVEL;
4348 move(term, c - ' ', term->curs.y, 0);
4353 term->termstate = TOPLEVEL;
4354 term->curr_attr &= ~ATTR_FGMASK;
4355 term->curr_attr &= ~ATTR_BOLD;
4356 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4357 set_erase_char(term);
4360 term->termstate = TOPLEVEL;
4361 term->curr_attr &= ~ATTR_BGMASK;
4362 term->curr_attr &= ~ATTR_BLINK;
4363 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4364 set_erase_char(term);
4367 default: break; /* placate gcc warning about enum use */
4369 if (term->selstate != NO_SELECTION) {
4370 pos cursplus = term->curs;
4372 check_selection(term, term->curs, cursplus);
4376 term_print_flush(term);
4377 if (term->cfg.logflush)
4378 logflush(term->logctx);
4382 * To prevent having to run the reasonably tricky bidi algorithm
4383 * too many times, we maintain a cache of the last lineful of data
4384 * fed to the algorithm on each line of the display.
4386 static int term_bidi_cache_hit(Terminal *term, int line,
4387 termchar *lbefore, int width)
4391 if (!term->pre_bidi_cache)
4392 return FALSE; /* cache doesn't even exist yet! */
4394 if (line >= term->bidi_cache_size)
4395 return FALSE; /* cache doesn't have this many lines */
4397 if (!term->pre_bidi_cache[line].chars)
4398 return FALSE; /* cache doesn't contain _this_ line */
4400 if (term->pre_bidi_cache[line].width != width)
4401 return FALSE; /* line is wrong width */
4403 for (i = 0; i < width; i++)
4404 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4405 return FALSE; /* line doesn't match cache */
4407 return TRUE; /* it didn't match. */
4410 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4411 termchar *lafter, bidi_char *wcTo,
4412 int width, int size)
4416 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4417 int j = term->bidi_cache_size;
4418 term->bidi_cache_size = line+1;
4419 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4420 term->bidi_cache_size,
4421 struct bidi_cache_entry);
4422 term->post_bidi_cache = sresize(term->post_bidi_cache,
4423 term->bidi_cache_size,
4424 struct bidi_cache_entry);
4425 while (j < term->bidi_cache_size) {
4426 term->pre_bidi_cache[j].chars =
4427 term->post_bidi_cache[j].chars = NULL;
4428 term->pre_bidi_cache[j].width =
4429 term->post_bidi_cache[j].width = -1;
4430 term->pre_bidi_cache[j].forward =
4431 term->post_bidi_cache[j].forward = NULL;
4432 term->pre_bidi_cache[j].backward =
4433 term->post_bidi_cache[j].backward = NULL;
4438 sfree(term->pre_bidi_cache[line].chars);
4439 sfree(term->post_bidi_cache[line].chars);
4440 sfree(term->post_bidi_cache[line].forward);
4441 sfree(term->post_bidi_cache[line].backward);
4443 term->pre_bidi_cache[line].width = width;
4444 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4445 term->post_bidi_cache[line].width = width;
4446 term->post_bidi_cache[line].chars = snewn(size, termchar);
4447 term->post_bidi_cache[line].forward = snewn(width, int);
4448 term->post_bidi_cache[line].backward = snewn(width, int);
4450 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4451 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4452 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4453 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4455 for (i = 0; i < width; i++) {
4456 int p = wcTo[i].index;
4458 assert(0 <= p && p < width);
4460 term->post_bidi_cache[line].backward[i] = p;
4461 term->post_bidi_cache[line].forward[p] = i;
4466 * Prepare the bidi information for a screen line. Returns the
4467 * transformed list of termchars, or NULL if no transformation at
4468 * all took place (because bidi is disabled). If return was
4469 * non-NULL, auxiliary information such as the forward and reverse
4470 * mappings of permutation position are available in
4471 * term->post_bidi_cache[scr_y].*.
4473 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4479 /* Do Arabic shaping and bidi. */
4480 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4482 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4484 if (term->wcFromTo_size < term->cols) {
4485 term->wcFromTo_size = term->cols;
4486 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4488 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4492 for(it=0; it<term->cols ; it++)
4494 unsigned long uc = (ldata->chars[it].chr);
4496 switch (uc & CSET_MASK) {
4498 if (!term->cfg.rawcnp) {
4499 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4503 uc = term->ucsdata->unitab_line[uc & 0xFF];
4506 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4509 switch (uc & CSET_MASK) {
4511 uc = term->ucsdata->unitab_font[uc & 0xFF];
4514 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4518 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4520 term->wcFrom[it].index = it;
4524 do_bidi(term->wcFrom, term->cols);
4526 /* this is saved iff done from inside the shaping */
4527 if(!term->cfg.bidi && term->cfg.arabicshaping)
4528 for(it=0; it<term->cols; it++)
4529 term->wcTo[it] = term->wcFrom[it];
4531 if(!term->cfg.arabicshaping)
4532 do_shape(term->wcFrom, term->wcTo, term->cols);
4534 if (term->ltemp_size < ldata->size) {
4535 term->ltemp_size = ldata->size;
4536 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4540 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4542 for(it=0; it<term->cols ; it++)
4544 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4545 if (term->ltemp[it].cc_next)
4546 term->ltemp[it].cc_next -=
4547 it - term->wcTo[it].index;
4549 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4550 term->ltemp[it].chr = term->wcTo[it].wc;
4552 term_bidi_cache_store(term, scr_y, ldata->chars,
4553 term->ltemp, term->wcTo,
4554 term->cols, ldata->size);
4556 lchars = term->ltemp;
4558 lchars = term->post_bidi_cache[scr_y].chars;
4568 * Given a context, update the window. Out of paranoia, we don't
4569 * allow WM_PAINT responses to do scrolling optimisations.
4571 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4573 int i, j, our_curs_y, our_curs_x;
4578 #ifdef OPTIMISE_SCROLL
4579 struct scrollregion *sr;
4580 #endif /* OPTIMISE_SCROLL */
4584 ch = snewn(chlen, wchar_t);
4586 newline = snewn(term->cols, termchar);
4588 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4591 * screen array, disptop, scrtop,
4593 * cfg.blinkpc, blink_is_real, tblinker,
4594 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4597 /* Has the cursor position or type changed ? */
4598 if (term->cursor_on) {
4599 if (term->has_focus) {
4600 if (term->cblinker || !term->cfg.blink_cur)
4601 cursor = TATTR_ACTCURS;
4605 cursor = TATTR_PASCURS;
4607 cursor |= TATTR_RIGHTCURS;
4610 our_curs_y = term->curs.y - term->disptop;
4613 * Adjust the cursor position:
4615 * - in the case where it's resting on the right-hand half
4616 * of a CJK wide character. xterm's behaviour here,
4617 * which seems adequate to me, is to display the cursor
4618 * covering the _whole_ character, exactly as if it were
4619 * one space to the left.
4621 termline *ldata = lineptr(term->curs.y);
4624 our_curs_x = term->curs.x;
4626 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4627 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4629 lchars = ldata->chars;
4631 if (our_curs_x > 0 &&
4632 lchars[our_curs_x].chr == UCSWIDE)
4639 * If the cursor is not where it was last time we painted, and
4640 * its previous position is visible on screen, invalidate its
4641 * previous position.
4643 if (term->dispcursy >= 0 &&
4644 (term->curstype != cursor ||
4645 term->dispcursy != our_curs_y ||
4646 term->dispcursx != our_curs_x)) {
4647 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4650 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4651 dispcurs[-1].attr |= ATTR_INVALID;
4652 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4653 dispcurs[1].attr |= ATTR_INVALID;
4654 dispcurs->attr |= ATTR_INVALID;
4658 term->dispcursx = term->dispcursy = -1;
4660 #ifdef OPTIMISE_SCROLL
4662 sr = term->scrollhead;
4664 struct scrollregion *next = sr->next;
4665 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4669 term->scrollhead = term->scrolltail = NULL;
4670 #endif /* OPTIMISE_SCROLL */
4672 /* The normal screen data */
4673 for (i = 0; i < term->rows; i++) {
4676 int dirty_line, dirty_run, selected;
4677 unsigned long attr = 0, cset = 0;
4678 int updated_line = 0;
4681 int last_run_dirty = 0;
4682 int laststart, dirtyrect;
4685 scrpos.y = i + term->disptop;
4686 ldata = lineptr(scrpos.y);
4688 /* Do Arabic shaping and bidi. */
4689 lchars = term_bidi_line(term, ldata, i);
4691 backward = term->post_bidi_cache[i].backward;
4693 lchars = ldata->chars;
4698 * First loop: work along the line deciding what we want
4699 * each character cell to look like.
4701 for (j = 0; j < term->cols; j++) {
4702 unsigned long tattr, tchar;
4703 termchar *d = lchars + j;
4704 scrpos.x = backward ? backward[j] : j;
4709 if (!term->cfg.ansi_colour)
4710 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4711 ATTR_DEFFG | ATTR_DEFBG;
4713 if (!term->cfg.xterm_256_colour) {
4715 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4716 if (colour >= 16 && colour < 256)
4717 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4718 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4719 if (colour >= 16 && colour < 256)
4720 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4723 switch (tchar & CSET_MASK) {
4725 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4728 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4731 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4734 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4737 /* Video reversing things */
4738 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4739 if (term->seltype == LEXICOGRAPHIC)
4740 selected = (posle(term->selstart, scrpos) &&
4741 poslt(scrpos, term->selend));
4743 selected = (posPle(term->selstart, scrpos) &&
4744 posPlt(scrpos, term->selend));
4748 ^ (selected ? ATTR_REVERSE : 0));
4750 /* 'Real' blinking ? */
4751 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4752 if (term->has_focus && term->tblinker) {
4753 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4755 tattr &= ~ATTR_BLINK;
4759 * Check the font we'll _probably_ be using to see if
4760 * the character is wide when we don't want it to be.
4762 if (tchar != term->disptext[i]->chars[j].chr ||
4763 tattr != (term->disptext[i]->chars[j].attr &~
4764 (ATTR_NARROW | DATTR_MASK))) {
4765 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4766 tattr |= ATTR_NARROW;
4767 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4768 tattr |= ATTR_NARROW;
4770 if (i == our_curs_y && j == our_curs_x) {
4772 term->curstype = cursor;
4773 term->dispcursx = j;
4774 term->dispcursy = i;
4778 newline[j].attr = tattr;
4779 newline[j].chr = tchar;
4780 /* Combining characters are still read from lchars */
4781 newline[j].cc_next = 0;
4785 * Now loop over the line again, noting where things have
4788 * During this loop, we keep track of where we last saw
4789 * DATTR_STARTRUN. Any mismatch automatically invalidates
4790 * _all_ of the containing run that was last printed: that
4791 * is, any rectangle that was drawn in one go in the
4792 * previous update should be either left completely alone
4793 * or overwritten in its entirety. This, along with the
4794 * expectation that front ends clip all text runs to their
4795 * bounding rectangle, should solve any possible problems
4796 * with fonts that overflow their character cells.
4800 for (j = 0; j < term->cols; j++) {
4801 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
4806 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
4807 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
4808 != newline[j].attr) {
4811 for (k = laststart; k < j; k++)
4812 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
4818 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4822 * Finally, loop once more and actually do the drawing.
4824 dirty_run = dirty_line = (ldata->lattr !=
4825 term->disptext[i]->lattr);
4826 term->disptext[i]->lattr = ldata->lattr;
4828 for (j = 0; j < term->cols; j++) {
4829 unsigned long tattr, tchar;
4830 int break_run, do_copy;
4831 termchar *d = lchars + j;
4833 tattr = newline[j].attr;
4834 tchar = newline[j].chr;
4836 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4839 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4841 /* Special hack for VT100 Linedraw glyphs */
4842 if (tchar >= 0x23BA && tchar <= 0x23BD)
4846 * Separate out sequences of characters that have the
4847 * same CSET, if that CSET is a magic one.
4849 if (CSET_OF(tchar) != cset)
4853 * Break on both sides of any combined-character cell.
4855 if (d->cc_next != 0 ||
4856 (j > 0 && d[-1].cc_next != 0))
4859 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4860 if (term->disptext[i]->chars[j].chr == tchar &&
4861 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
4863 else if (!dirty_run && ccount == 1)
4868 if ((dirty_run || last_run_dirty) && ccount > 0) {
4869 do_text(ctx, start, i, ch, ccount, attr,
4871 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4872 do_cursor(ctx, start, i, ch, ccount, attr,
4880 cset = CSET_OF(tchar);
4881 if (term->ucsdata->dbcs_screenfont)
4882 last_run_dirty = dirty_run;
4883 dirty_run = dirty_line;
4887 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4893 if (ccount >= chlen) {
4894 chlen = ccount + 256;
4895 ch = sresize(ch, chlen, wchar_t);
4897 ch[ccount++] = (wchar_t) tchar;
4902 while (dd->cc_next) {
4903 unsigned long schar;
4908 switch (schar & CSET_MASK) {
4910 schar = term->ucsdata->unitab_line[schar & 0xFF];
4913 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4916 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4920 if (ccount >= chlen) {
4921 chlen = ccount + 256;
4922 ch = sresize(ch, chlen, wchar_t);
4924 ch[ccount++] = (wchar_t) schar;
4927 attr |= TATTR_COMBINING;
4931 copy_termchar(term->disptext[i], j, d);
4932 term->disptext[i]->chars[j].chr = tchar;
4933 term->disptext[i]->chars[j].attr = tattr;
4935 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
4938 /* If it's a wide char step along to the next one. */
4939 if (tattr & ATTR_WIDE) {
4940 if (++j < term->cols) {
4943 * By construction above, the cursor should not
4944 * be on the right-hand half of this character.
4947 assert(!(i == our_curs_y && j == our_curs_x));
4948 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4950 copy_termchar(term->disptext[i], j, d);
4954 if (dirty_run && ccount > 0) {
4955 do_text(ctx, start, i, ch, ccount, attr,
4957 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4958 do_cursor(ctx, start, i, ch, ccount, attr,
4972 * Invalidate the whole screen so it will be repainted in full.
4974 void term_invalidate(Terminal *term)
4978 for (i = 0; i < term->rows; i++)
4979 for (j = 0; j < term->cols; j++)
4980 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4982 term_schedule_update(term);
4986 * Paint the window in response to a WM_PAINT message.
4988 void term_paint(Terminal *term, Context ctx,
4989 int left, int top, int right, int bottom, int immediately)
4992 if (left < 0) left = 0;
4993 if (top < 0) top = 0;
4994 if (right >= term->cols) right = term->cols-1;
4995 if (bottom >= term->rows) bottom = term->rows-1;
4997 for (i = top; i <= bottom && i < term->rows; i++) {
4998 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
4999 for (j = left; j <= right && j < term->cols; j++)
5000 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5002 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
5003 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5007 do_paint (term, ctx, FALSE);
5009 term_schedule_update(term);
5014 * Attempt to scroll the scrollback. The second parameter gives the
5015 * position we want to scroll to; the first is +1 to denote that
5016 * this position is relative to the beginning of the scrollback, -1
5017 * to denote it is relative to the end, and 0 to denote that it is
5018 * relative to the current position.
5020 void term_scroll(Terminal *term, int rel, int where)
5022 int sbtop = -sblines(term);
5023 #ifdef OPTIMISE_SCROLL
5024 int olddisptop = term->disptop;
5026 #endif /* OPTIMISE_SCROLL */
5028 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5029 if (term->disptop < sbtop)
5030 term->disptop = sbtop;
5031 if (term->disptop > 0)
5034 #ifdef OPTIMISE_SCROLL
5035 shift = (term->disptop - olddisptop);
5036 if (shift < term->rows && shift > -term->rows)
5037 scroll_display(term, 0, term->rows - 1, shift);
5038 #endif /* OPTIMISE_SCROLL */
5042 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5045 wchar_t *wbptr; /* where next char goes within workbuf */
5047 int wblen = 0; /* workbuf len */
5048 int buflen; /* amount of memory allocated to workbuf */
5050 buflen = 5120; /* Default size */
5051 workbuf = snewn(buflen, wchar_t);
5052 wbptr = workbuf; /* start filling here */
5053 old_top_x = top.x; /* needed for rect==1 */
5055 while (poslt(top, bottom)) {
5057 termline *ldata = lineptr(top.y);
5061 * nlpos will point at the maximum position on this line we
5062 * should copy up to. So we start it at the end of the
5066 nlpos.x = term->cols;
5069 * ... move it backwards if there's unused space at the end
5070 * of the line (and also set `nl' if this is the case,
5071 * because in normal selection mode this means we need a
5072 * newline at the end)...
5074 if (!(ldata->lattr & LATTR_WRAPPED)) {
5075 while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5076 !ldata->chars[nlpos.x - 1].cc_next &&
5079 if (poslt(nlpos, bottom))
5081 } else if (ldata->lattr & LATTR_WRAPPED2) {
5082 /* Ignore the last char on the line in a WRAPPED2 line. */
5087 * ... and then clip it to the terminal x coordinate if
5088 * we're doing rectangular selection. (In this case we
5089 * still did the above, so that copying e.g. the right-hand
5090 * column from a table doesn't fill with spaces on the
5094 if (nlpos.x > bottom.x)
5096 nl = (top.y < bottom.y);
5099 while (poslt(top, bottom) && poslt(top, nlpos)) {
5102 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5104 wchar_t cbuf[16], *p;
5108 if (ldata->chars[x].chr == UCSWIDE) {
5114 int uc = ldata->chars[x].chr;
5116 switch (uc & CSET_MASK) {
5118 if (!term->cfg.rawcnp) {
5119 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5123 uc = term->ucsdata->unitab_line[uc & 0xFF];
5126 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5129 switch (uc & CSET_MASK) {
5131 uc = term->ucsdata->unitab_font[uc & 0xFF];
5134 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5138 set = (uc & CSET_MASK);
5139 c = (uc & ~CSET_MASK);
5143 if (DIRECT_FONT(uc)) {
5144 if (c >= ' ' && c != 0x7F) {
5148 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5150 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5151 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5155 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5159 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5166 for (p = cbuf; *p; p++) {
5167 /* Enough overhead for trailing NL and nul */
5168 if (wblen >= buflen - 16) {
5170 workbuf = sresize(workbuf, buflen, wchar_t);
5171 wbptr = workbuf + wblen;
5177 if (ldata->chars[x].cc_next)
5178 x += ldata->chars[x].cc_next;
5186 for (i = 0; i < sel_nl_sz; i++) {
5188 *wbptr++ = sel_nl[i];
5192 top.x = rect ? old_top_x : 0;
5196 #if SELECTION_NUL_TERMINATED
5200 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
5201 if (buflen > 0) /* indicates we allocated this buffer */
5205 void term_copyall(Terminal *term)
5209 tree234 *screen = term->screen;
5210 top.y = -sblines(term);
5212 bottom.y = find_last_nonempty_line(term, screen);
5213 bottom.x = term->cols;
5214 clipme(term, top, bottom, 0, TRUE);
5218 * The wordness array is mainly for deciding the disposition of the
5219 * US-ASCII characters.
5221 static int wordtype(Terminal *term, int uc)
5224 int start, end, ctype;
5226 static const struct ucsword ucs_words[] = {
5232 0x037e, 0x037e, 1}, /* Greek question mark */
5234 0x0387, 0x0387, 1}, /* Greek ano teleia */
5236 0x055a, 0x055f, 1}, /* Armenian punctuation */
5238 0x0589, 0x0589, 1}, /* Armenian full stop */
5240 0x0700, 0x070d, 1}, /* Syriac punctuation */
5242 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5244 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5246 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5248 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5250 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5252 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5254 0x2000, 0x200a, 0}, /* Various spaces */
5256 0x2070, 0x207f, 2}, /* superscript */
5258 0x2080, 0x208f, 2}, /* subscript */
5260 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5262 0x3000, 0x3000, 0}, /* ideographic space */
5264 0x3001, 0x3020, 1}, /* ideographic punctuation */
5266 0x303f, 0x309f, 3}, /* Hiragana */
5268 0x30a0, 0x30ff, 3}, /* Katakana */
5270 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5272 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5274 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5276 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5278 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5280 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5282 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5284 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5286 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5290 const struct ucsword *wptr;
5292 switch (uc & CSET_MASK) {
5294 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5297 uc = term->ucsdata->unitab_line[uc & 0xFF];
5300 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5303 switch (uc & CSET_MASK) {
5305 uc = term->ucsdata->unitab_font[uc & 0xFF];
5308 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5312 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5313 * fail as there's such a thing as a double width space. :-(
5315 if (term->ucsdata->dbcs_screenfont &&
5316 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5320 return term->wordness[uc];
5322 for (wptr = ucs_words; wptr->start; wptr++) {
5323 if (uc >= wptr->start && uc <= wptr->end)
5331 * Spread the selection outwards according to the selection mode.
5333 static pos sel_spread_half(Terminal *term, pos p, int dir)
5337 int topy = -sblines(term);
5339 ldata = lineptr(p.y);
5341 switch (term->selmode) {
5344 * In this mode, every character is a separate unit, except
5345 * for runs of spaces at the end of a non-wrapping line.
5347 if (!(ldata->lattr & LATTR_WRAPPED)) {
5348 termchar *q = ldata->chars + term->cols;
5349 while (q > ldata->chars &&
5350 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5352 if (q == ldata->chars + term->cols)
5354 if (p.x >= q - ldata->chars)
5355 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5360 * In this mode, the units are maximal runs of characters
5361 * whose `wordness' has the same value.
5363 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5366 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5367 term->cols-1 : term->cols);
5368 if (p.x < maxcols-1) {
5369 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5374 if (ldata->lattr & LATTR_WRAPPED) {
5376 ldata2 = lineptr(p.y+1);
5377 if (wordtype(term, UCSGET(ldata2->chars, 0))
5394 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5403 ldata2 = lineptr(p.y-1);
5404 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5405 term->cols-1 : term->cols);
5406 if (ldata2->lattr & LATTR_WRAPPED) {
5407 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5425 * In this mode, every line is a unit.
5427 p.x = (dir == -1 ? 0 : term->cols - 1);
5435 static void sel_spread(Terminal *term)
5437 if (term->seltype == LEXICOGRAPHIC) {
5438 term->selstart = sel_spread_half(term, term->selstart, -1);
5439 decpos(term->selend);
5440 term->selend = sel_spread_half(term, term->selend, +1);
5441 incpos(term->selend);
5445 void term_do_paste(Terminal *term)
5450 get_clip(term->frontend, &data, &len);
5451 if (data && len > 0) {
5454 term_seen_key_event(term); /* pasted data counts */
5456 if (term->paste_buffer)
5457 sfree(term->paste_buffer);
5458 term->paste_pos = term->paste_hold = term->paste_len = 0;
5459 term->paste_buffer = snewn(len, wchar_t);
5462 while (p < data + len) {
5463 while (p < data + len &&
5464 !(p <= data + len - sel_nl_sz &&
5465 !memcmp(p, sel_nl, sizeof(sel_nl))))
5470 for (i = 0; i < p - q; i++) {
5471 term->paste_buffer[term->paste_len++] = q[i];
5475 if (p <= data + len - sel_nl_sz &&
5476 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5477 term->paste_buffer[term->paste_len++] = '\015';
5483 /* Assume a small paste will be OK in one go. */
5484 if (term->paste_len < 256) {
5486 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5487 if (term->paste_buffer)
5488 sfree(term->paste_buffer);
5489 term->paste_buffer = 0;
5490 term->paste_pos = term->paste_hold = term->paste_len = 0;
5493 get_clip(term->frontend, NULL, NULL);
5496 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5497 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5501 int raw_mouse = (term->xterm_mouse &&
5502 !term->cfg.no_mouse_rep &&
5503 !(term->cfg.mouse_override && shift));
5504 int default_seltype;
5508 if (a == MA_DRAG && !raw_mouse)
5509 term_scroll(term, 0, -1);
5511 if (y >= term->rows) {
5513 if (a == MA_DRAG && !raw_mouse)
5514 term_scroll(term, 0, +1);
5523 if (x >= term->cols)
5526 selpoint.y = y + term->disptop;
5527 ldata = lineptr(selpoint.y);
5529 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5533 * Transform x through the bidi algorithm to find the _logical_
5534 * click point from the physical one.
5536 if (term_bidi_line(term, ldata, y) != NULL) {
5537 x = term->post_bidi_cache[y].backward[x];
5544 int encstate = 0, r, c;
5551 encstate = 0x20; /* left button down */
5562 case MBT_WHEEL_DOWN:
5565 default: break; /* placate gcc warning about enum use */
5569 if (term->xterm_mouse == 1)
5575 term->mouse_is_down = 0;
5578 if (term->mouse_is_down == braw)
5580 term->mouse_is_down = braw;
5582 default: break; /* placate gcc warning about enum use */
5591 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5592 ldisc_send(term->ldisc, abuf, 6, 0);
5598 * Set the selection type (rectangular or normal) at the start
5599 * of a selection attempt, from the state of Alt.
5601 if (!alt ^ !term->cfg.rect_select)
5602 default_seltype = RECTANGULAR;
5604 default_seltype = LEXICOGRAPHIC;
5606 if (term->selstate == NO_SELECTION) {
5607 term->seltype = default_seltype;
5610 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5612 term->selstate = ABOUT_TO;
5613 term->seltype = default_seltype;
5614 term->selanchor = selpoint;
5615 term->selmode = SM_CHAR;
5616 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5618 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5619 term->selstate = DRAGGING;
5620 term->selstart = term->selanchor = selpoint;
5621 term->selend = term->selstart;
5622 incpos(term->selend);
5624 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5625 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5626 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5628 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5629 term->selstate == SELECTED) {
5630 if (term->seltype == LEXICOGRAPHIC) {
5632 * For normal selection, we extend by moving
5633 * whichever end of the current selection is closer
5636 if (posdiff(selpoint, term->selstart) <
5637 posdiff(term->selend, term->selstart) / 2) {
5638 term->selanchor = term->selend;
5639 decpos(term->selanchor);
5641 term->selanchor = term->selstart;
5645 * For rectangular selection, we have a choice of
5646 * _four_ places to put selanchor and selpoint: the
5647 * four corners of the selection.
5649 if (2*selpoint.x < term->selstart.x + term->selend.x)
5650 term->selanchor.x = term->selend.x-1;
5652 term->selanchor.x = term->selstart.x;
5654 if (2*selpoint.y < term->selstart.y + term->selend.y)
5655 term->selanchor.y = term->selend.y;
5657 term->selanchor.y = term->selstart.y;
5659 term->selstate = DRAGGING;
5661 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5662 term->selanchor = selpoint;
5663 term->selstate = DRAGGING;
5664 if (term->seltype == LEXICOGRAPHIC) {
5666 * For normal selection, we set (selstart,selend) to
5667 * (selpoint,selanchor) in some order.
5669 if (poslt(selpoint, term->selanchor)) {
5670 term->selstart = selpoint;
5671 term->selend = term->selanchor;
5672 incpos(term->selend);
5674 term->selstart = term->selanchor;
5675 term->selend = selpoint;
5676 incpos(term->selend);
5680 * For rectangular selection, we may need to
5681 * interchange x and y coordinates (if the user has
5682 * dragged in the -x and +y directions, or vice versa).
5684 term->selstart.x = min(term->selanchor.x, selpoint.x);
5685 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5686 term->selstart.y = min(term->selanchor.y, selpoint.y);
5687 term->selend.y = max(term->selanchor.y, selpoint.y);
5690 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5692 if (term->selstate == DRAGGING) {
5694 * We've completed a selection. We now transfer the
5695 * data to the clipboard.
5697 clipme(term, term->selstart, term->selend,
5698 (term->seltype == RECTANGULAR), FALSE);
5699 term->selstate = SELECTED;
5701 term->selstate = NO_SELECTION;
5702 } else if (bcooked == MBT_PASTE
5704 #if MULTICLICK_ONLY_EVENT
5705 || a == MA_2CLK || a == MA_3CLK
5708 request_paste(term->frontend);
5714 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5715 unsigned int modifiers, unsigned int flags)
5719 int prependesc = FALSE;
5723 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5724 for (i = 0; i < tlen; i++)
5725 fprintf(stderr, " %04x", (unsigned)text[i]);
5726 fprintf(stderr, "\n");
5730 if ((flags & PKF_REPEAT) && term->repeat_off)
5733 /* Currently, Meta always just prefixes everything with ESC. */
5734 if (modifiers & PKM_META)
5736 modifiers &= ~PKM_META;
5739 * Alt is only used for Alt+keypad, which isn't supported yet, so
5742 modifiers &= ~PKM_ALT;
5744 /* Standard local function keys */
5745 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5747 if (keysym == PK_PAGEUP)
5748 /* scroll up one page */;
5749 if (keysym == PK_PAGEDOWN)
5750 /* scroll down on page */;
5751 if (keysym == PK_INSERT)
5752 term_do_paste(term);
5755 if (keysym == PK_PAGEUP)
5756 /* scroll up one line */;
5757 if (keysym == PK_PAGEDOWN)
5758 /* scroll down one line */;
5759 /* Control-Numlock for app-keypad mode switch */
5760 if (keysym == PK_PF1)
5761 term->app_keypad_keys ^= 1;
5765 if (modifiers & PKM_ALT) {
5766 /* Alt+F4 (close) */
5767 /* Alt+Return (full screen) */
5768 /* Alt+Space (system menu) */
5771 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5772 text[0] >= 0x20 && text[0] <= 0x7e) {
5773 /* ASCII chars + Control */
5774 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5775 (text[0] >= 0x61 && text[0] <= 0x7a))
5779 * Control-2 should return ^@ (0x00), Control-6 should return
5780 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5781 * the DOS keyboard handling did it, and we have nothing better
5782 * to do with the key combo in question, we'll also map
5783 * Control-Backquote to ^\ (0x1C).
5786 case ' ': text[0] = 0x00; break;
5787 case '-': text[0] = 0x1f; break;
5788 case '/': text[0] = 0x1f; break;
5789 case '2': text[0] = 0x00; break;
5790 case '3': text[0] = 0x1b; break;
5791 case '4': text[0] = 0x1c; break;
5792 case '5': text[0] = 0x1d; break;
5793 case '6': text[0] = 0x1e; break;
5794 case '7': text[0] = 0x1f; break;
5795 case '8': text[0] = 0x7f; break;
5796 case '`': text[0] = 0x1c; break;
5801 /* Nethack keypad */
5802 if (term->cfg.nethack_keypad) {
5805 case PK_KP1: c = 'b'; break;
5806 case PK_KP2: c = 'j'; break;
5807 case PK_KP3: c = 'n'; break;
5808 case PK_KP4: c = 'h'; break;
5809 case PK_KP5: c = '.'; break;
5810 case PK_KP6: c = 'l'; break;
5811 case PK_KP7: c = 'y'; break;
5812 case PK_KP8: c = 'k'; break;
5813 case PK_KP9: c = 'u'; break;
5814 default: break; /* else gcc warns `enum value not used' */
5818 if (modifiers & PKM_CONTROL)
5820 else if (modifiers & PKM_SHIFT)
5828 /* Numeric Keypad */
5829 if (PK_ISKEYPAD(keysym)) {
5833 * In VT400 mode, PFn always emits an escape sequence. In
5834 * Linux and tilde modes, this only happens in app keypad mode.
5836 if (term->cfg.funky_type == FUNKY_VT400 ||
5837 ((term->cfg.funky_type == FUNKY_LINUX ||
5838 term->cfg.funky_type == FUNKY_TILDE) &&
5839 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5841 case PK_PF1: xkey = 'P'; break;
5842 case PK_PF2: xkey = 'Q'; break;
5843 case PK_PF3: xkey = 'R'; break;
5844 case PK_PF4: xkey = 'S'; break;
5845 default: break; /* else gcc warns `enum value not used' */
5848 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5850 case PK_KP0: xkey = 'p'; break;
5851 case PK_KP1: xkey = 'q'; break;
5852 case PK_KP2: xkey = 'r'; break;
5853 case PK_KP3: xkey = 's'; break;
5854 case PK_KP4: xkey = 't'; break;
5855 case PK_KP5: xkey = 'u'; break;
5856 case PK_KP6: xkey = 'v'; break;
5857 case PK_KP7: xkey = 'w'; break;
5858 case PK_KP8: xkey = 'x'; break;
5859 case PK_KP9: xkey = 'y'; break;
5860 case PK_KPDECIMAL: xkey = 'n'; break;
5861 case PK_KPENTER: xkey = 'M'; break;
5862 default: break; /* else gcc warns `enum value not used' */
5864 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5866 * xterm can't see the layout of the keypad, so it has
5867 * to rely on the X keysyms returned by the keys.
5868 * Hence, we look at the strings here, not the PuTTY
5869 * keysyms (which describe the layout).
5873 if (modifiers & PKM_SHIFT)
5878 case '/': xkey = 'o'; break;
5879 case '*': xkey = 'j'; break;
5880 case '-': xkey = 'm'; break;
5884 * In all other modes, we try to retain the layout of
5885 * the DEC keypad in application mode.
5889 /* This key covers the '-' and ',' keys on a VT220 */
5890 if (modifiers & PKM_SHIFT)
5891 xkey = 'm'; /* VT220 '-' */
5893 xkey = 'l'; /* VT220 ',' */
5895 case PK_KPMINUS: xkey = 'm'; break;
5896 case PK_KPCOMMA: xkey = 'l'; break;
5897 default: break; /* else gcc warns `enum value not used' */
5902 if (term->vt52_mode) {
5903 if (xkey >= 'P' && xkey <= 'S')
5904 p += sprintf((char *) p, "\x1B%c", xkey);
5906 p += sprintf((char *) p, "\x1B?%c", xkey);
5908 p += sprintf((char *) p, "\x1BO%c", xkey);
5911 /* Not in application mode -- treat the number pad as arrow keys? */
5912 if ((flags & PKF_NUMLOCK) == 0) {
5914 case PK_KP0: keysym = PK_INSERT; break;
5915 case PK_KP1: keysym = PK_END; break;
5916 case PK_KP2: keysym = PK_DOWN; break;
5917 case PK_KP3: keysym = PK_PAGEDOWN; break;
5918 case PK_KP4: keysym = PK_LEFT; break;
5919 case PK_KP5: keysym = PK_REST; break;
5920 case PK_KP6: keysym = PK_RIGHT; break;
5921 case PK_KP7: keysym = PK_HOME; break;
5922 case PK_KP8: keysym = PK_UP; break;
5923 case PK_KP9: keysym = PK_PAGEUP; break;
5924 default: break; /* else gcc warns `enum value not used' */
5929 /* Miscellaneous keys */
5936 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5937 else if (modifiers == PKM_SHIFT)
5938 /* We do the opposite of what is configured */
5939 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5945 else if (modifiers == PKM_SHIFT)
5946 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5949 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5951 if (modifiers == PKM_CONTROL)
5956 case PK_KPENTER: /* Odd keypad modes handled above */
5957 if (modifiers == 0) {
5959 if (term->cr_lf_return)
5963 default: break; /* else gcc warns `enum value not used' */
5966 /* SCO function keys and editing keys */
5967 if (term->cfg.funky_type == FUNKY_SCO) {
5968 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
5969 static char const codes[] =
5970 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5971 int index = keysym - PK_F1;
5973 if (modifiers & PKM_SHIFT) index += 12;
5974 if (modifiers & PKM_CONTROL) index += 24;
5975 p += sprintf((char *) p, "\x1B[%c", codes[index]);
5978 if (PK_ISEDITING(keysym)) {
5982 case PK_DELETE: *p++ = 0x7f; goto done;
5983 case PK_HOME: xkey = 'H'; break;
5984 case PK_INSERT: xkey = 'L'; break;
5985 case PK_END: xkey = 'F'; break;
5986 case PK_PAGEUP: xkey = 'I'; break;
5987 case PK_PAGEDOWN: xkey = 'G'; break;
5988 default: break; /* else gcc warns `enum value not used' */
5990 p += sprintf((char *) p, "\x1B[%c", xkey);
5994 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
5997 if (term->cfg.funky_type == FUNKY_XTERM) {
5998 /* Xterm shuffles these keys, apparently. */
6000 case PK_HOME: keysym = PK_INSERT; break;
6001 case PK_INSERT: keysym = PK_HOME; break;
6002 case PK_DELETE: keysym = PK_END; break;
6003 case PK_END: keysym = PK_PAGEUP; break;
6004 case PK_PAGEUP: keysym = PK_DELETE; break;
6005 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
6006 default: break; /* else gcc warns `enum value not used' */
6011 if (term->cfg.rxvt_homeend &&
6012 (keysym == PK_HOME || keysym == PK_END)) {
6013 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
6017 if (term->vt52_mode) {
6021 * A real VT52 doesn't have these, and a VT220 doesn't
6022 * send anything for them in VT52 mode.
6025 case PK_HOME: xkey = 'H'; break;
6026 case PK_INSERT: xkey = 'L'; break;
6027 case PK_DELETE: xkey = 'M'; break;
6028 case PK_END: xkey = 'E'; break;
6029 case PK_PAGEUP: xkey = 'I'; break;
6030 case PK_PAGEDOWN: xkey = 'G'; break;
6031 default: xkey=0; break; /* else gcc warns `enum value not used'*/
6033 p += sprintf((char *) p, "\x1B%c", xkey);
6038 case PK_HOME: code = 1; break;
6039 case PK_INSERT: code = 2; break;
6040 case PK_DELETE: code = 3; break;
6041 case PK_END: code = 4; break;
6042 case PK_PAGEUP: code = 5; break;
6043 case PK_PAGEDOWN: code = 6; break;
6044 default: code = 0; break; /* else gcc warns `enum value not used' */
6046 p += sprintf((char *) p, "\x1B[%d~", code);
6050 if (PK_ISFKEY(keysym)) {
6051 /* Map Shift+F1-F10 to F11-F20 */
6052 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
6054 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
6056 /* XXX This overrides the XTERM/VT52 mode below */
6058 if (keysym >= PK_F6) offt++;
6059 if (keysym >= PK_F12) offt++;
6060 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6061 'P' + keysym - PK_F1 - offt);
6064 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6065 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6068 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6069 if (term->vt52_mode)
6070 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6072 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6075 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6079 if (PK_ISCURSOR(keysym)) {
6083 case PK_UP: xkey = 'A'; break;
6084 case PK_DOWN: xkey = 'B'; break;
6085 case PK_RIGHT: xkey = 'C'; break;
6086 case PK_LEFT: xkey = 'D'; break;
6087 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6088 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6090 if (term->vt52_mode)
6091 p += sprintf((char *) p, "\x1B%c", xkey);
6093 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
6095 /* Useful mapping of Ctrl-arrows */
6096 if (modifiers == PKM_CONTROL)
6100 p += sprintf((char *) p, "\x1BO%c", xkey);
6102 p += sprintf((char *) p, "\x1B[%c", xkey);
6108 if (p > output || tlen > 0) {
6110 * Interrupt an ongoing paste. I'm not sure
6111 * this is sensible, but for the moment it's
6112 * preferable to having to faff about buffering
6118 * We need not bother about stdin backlogs
6119 * here, because in GUI PuTTY we can't do
6120 * anything about it anyway; there's no means
6121 * of asking Windows to hold off on KEYDOWN
6122 * messages. We _have_ to buffer everything
6125 term_seen_key_event(term);
6129 fprintf(stderr, "sending ESC\n");
6131 ldisc_send(term->ldisc, "\x1b", 1, 1);
6136 fprintf(stderr, "sending %d bytes:", p - output);
6137 for (i = 0; i < p - output; i++)
6138 fprintf(stderr, " %02x", output[i]);
6139 fprintf(stderr, "\n");
6141 ldisc_send(term->ldisc, output, p - output, 1);
6142 } else if (tlen > 0) {
6144 fprintf(stderr, "sending %d unichars:", tlen);
6145 for (i = 0; i < tlen; i++)
6146 fprintf(stderr, " %04x", (unsigned) text[i]);
6147 fprintf(stderr, "\n");
6149 luni_send(term->ldisc, text, tlen, 1);
6154 void term_nopaste(Terminal *term)
6156 if (term->paste_len == 0)
6158 sfree(term->paste_buffer);
6159 term->paste_buffer = NULL;
6160 term->paste_len = 0;
6163 int term_paste_pending(Terminal *term)
6165 return term->paste_len != 0;
6168 void term_paste(Terminal *term)
6170 long now, paste_diff;
6172 if (term->paste_len == 0)
6175 /* Don't wait forever to paste */
6176 if (term->paste_hold) {
6177 now = GETTICKCOUNT();
6178 paste_diff = now - term->last_paste;
6179 if (paste_diff >= 0 && paste_diff < 450)
6182 term->paste_hold = 0;
6184 while (term->paste_pos < term->paste_len) {
6186 while (n + term->paste_pos < term->paste_len) {
6187 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6191 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6192 term->paste_pos += n;
6194 if (term->paste_pos < term->paste_len) {
6195 term->paste_hold = 1;
6199 sfree(term->paste_buffer);
6200 term->paste_buffer = NULL;
6201 term->paste_len = 0;
6204 static void deselect(Terminal *term)
6206 term->selstate = NO_SELECTION;
6207 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6210 void term_deselect(Terminal *term)
6216 int term_ldisc(Terminal *term, int option)
6218 if (option == LD_ECHO)
6219 return term->term_echoing;
6220 if (option == LD_EDIT)
6221 return term->term_editing;
6225 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6227 bufchain_add(&term->inbuf, data, len);
6229 if (!term->in_term_out) {
6230 term->in_term_out = TRUE;
6231 term_reset_cblink(term);
6233 * During drag-selects, we do not process terminal input,
6234 * because the user will want the screen to hold still to
6237 if (term->selstate != DRAGGING)
6239 term->in_term_out = FALSE;
6243 * term_out() always completely empties inbuf. Therefore,
6244 * there's no reason at all to return anything other than zero
6245 * from this function, because there _can't_ be a question of
6246 * the remote side needing to wait until term_out() has cleared
6249 * This is a slightly suboptimal way to deal with SSH-2 - in
6250 * principle, the window mechanism would allow us to continue
6251 * to accept data on forwarded ports and X connections even
6252 * while the terminal processing was going slowly - but we
6253 * can't do the 100% right thing without moving the terminal
6254 * processing into a separate thread, and that might hurt
6255 * portability. So we manage stdout buffering the old SSH-1 way:
6256 * if the terminal processing goes slowly, the whole SSH
6257 * connection stops accepting data until it's ready.
6259 * In practice, I can't imagine this causing serious trouble.
6264 void term_provide_logctx(Terminal *term, void *logctx)
6266 term->logctx = logctx;
6269 void term_set_focus(Terminal *term, int has_focus)
6271 term->has_focus = has_focus;
6272 term_schedule_cblink(term);