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[lenof(term->cfg.answerback)], *s, *d;
2681 for (s = term->cfg.answerback, d = abuf; *s;) {
2683 char c = ctrlparse(s, &n);
2691 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2695 case '\007': /* BEL: Bell */
2697 struct beeptime *newbeep;
2698 unsigned long ticks;
2700 ticks = GETTICKCOUNT();
2702 if (!term->beep_overloaded) {
2703 newbeep = snew(struct beeptime);
2704 newbeep->ticks = ticks;
2705 newbeep->next = NULL;
2706 if (!term->beephead)
2707 term->beephead = newbeep;
2709 term->beeptail->next = newbeep;
2710 term->beeptail = newbeep;
2715 * Throw out any beeps that happened more than
2718 while (term->beephead &&
2719 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2720 struct beeptime *tmp = term->beephead;
2721 term->beephead = tmp->next;
2723 if (!term->beephead)
2724 term->beeptail = NULL;
2728 if (term->cfg.bellovl && term->beep_overloaded &&
2729 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2731 * If we're currently overloaded and the
2732 * last beep was more than s seconds ago,
2733 * leave overload mode.
2735 term->beep_overloaded = FALSE;
2736 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2737 term->nbeeps >= term->cfg.bellovl_n) {
2739 * Now, if we have n or more beeps
2740 * remaining in the queue, go into overload
2743 term->beep_overloaded = TRUE;
2745 term->lastbeep = ticks;
2748 * Perform an actual beep if we're not overloaded.
2750 if (!term->cfg.bellovl || !term->beep_overloaded) {
2751 beep(term->frontend, term->cfg.beep);
2753 if (term->cfg.beep == BELL_VISUAL) {
2754 term_schedule_vbell(term, FALSE, 0);
2757 seen_disp_event(term);
2760 case '\b': /* BS: Back space */
2761 if (term->curs.x == 0 &&
2762 (term->curs.y == 0 || term->wrap == 0))
2764 else if (term->curs.x == 0 && term->curs.y > 0)
2765 term->curs.x = term->cols - 1, term->curs.y--;
2766 else if (term->wrapnext)
2767 term->wrapnext = FALSE;
2770 seen_disp_event(term);
2772 case '\016': /* LS1: Locking-shift one */
2773 compatibility(VT100);
2776 case '\017': /* LS0: Locking-shift zero */
2777 compatibility(VT100);
2780 case '\033': /* ESC: Escape */
2781 if (term->vt52_mode)
2782 term->termstate = VT52_ESC;
2784 compatibility(ANSIMIN);
2785 term->termstate = SEEN_ESC;
2786 term->esc_query = FALSE;
2789 case '\015': /* CR: Carriage return */
2791 term->wrapnext = FALSE;
2792 seen_disp_event(term);
2793 term->paste_hold = 0;
2795 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2797 case '\014': /* FF: Form feed */
2798 if (has_compat(SCOANSI)) {
2799 move(term, 0, 0, 0);
2800 erase_lots(term, FALSE, FALSE, TRUE);
2802 term->wrapnext = FALSE;
2803 seen_disp_event(term);
2806 case '\013': /* VT: Line tabulation */
2807 compatibility(VT100);
2808 case '\012': /* LF: Line feed */
2809 if (term->curs.y == term->marg_b)
2810 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2811 else if (term->curs.y < term->rows - 1)
2813 if (term->cfg.lfhascr)
2815 term->wrapnext = FALSE;
2816 seen_disp_event(term);
2817 term->paste_hold = 0;
2819 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2821 case '\t': /* HT: Character tabulation */
2823 pos old_curs = term->curs;
2824 termline *ldata = scrlineptr(term->curs.y);
2828 } while (term->curs.x < term->cols - 1 &&
2829 !term->tabs[term->curs.x]);
2831 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2832 if (term->curs.x >= term->cols / 2)
2833 term->curs.x = term->cols / 2 - 1;
2835 if (term->curs.x >= term->cols)
2836 term->curs.x = term->cols - 1;
2839 check_selection(term, old_curs, term->curs);
2841 seen_disp_event(term);
2845 switch (term->termstate) {
2847 /* Only graphic characters get this far;
2848 * ctrls are stripped above */
2850 termline *cline = scrlineptr(term->curs.y);
2855 width = (term->cfg.cjk_ambig_wide ?
2856 mk_wcwidth_cjk((wchar_t) c) :
2857 mk_wcwidth((wchar_t) c));
2859 if (term->wrapnext && term->wrap && width > 0) {
2860 cline->lattr |= LATTR_WRAPPED;
2861 if (term->curs.y == term->marg_b)
2862 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2863 else if (term->curs.y < term->rows - 1)
2866 term->wrapnext = FALSE;
2867 cline = scrlineptr(term->curs.y);
2869 if (term->insert && width > 0)
2871 if (term->selstate != NO_SELECTION) {
2872 pos cursplus = term->curs;
2874 check_selection(term, term->curs, cursplus);
2876 if (((c & CSET_MASK) == CSET_ASCII ||
2877 (c & CSET_MASK) == 0) &&
2879 logtraffic(term->logctx, (unsigned char) c,
2885 * If we're about to display a double-width
2886 * character starting in the rightmost
2887 * column, then we do something special
2888 * instead. We must print a space in the
2889 * last column of the screen, then wrap;
2890 * and we also set LATTR_WRAPPED2 which
2891 * instructs subsequent cut-and-pasting not
2892 * only to splice this line to the one
2893 * after it, but to ignore the space in the
2894 * last character position as well.
2895 * (Because what was actually output to the
2896 * terminal was presumably just a sequence
2897 * of CJK characters, and we don't want a
2898 * space to be pasted in the middle of
2899 * those just because they had the
2900 * misfortune to start in the wrong parity
2901 * column. xterm concurs.)
2903 check_boundary(term, term->curs.x, term->curs.y);
2904 check_boundary(term, term->curs.x+2, term->curs.y);
2905 if (term->curs.x == term->cols-1) {
2906 copy_termchar(cline, term->curs.x,
2908 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2909 if (term->curs.y == term->marg_b)
2910 scroll(term, term->marg_t, term->marg_b,
2912 else if (term->curs.y < term->rows - 1)
2915 cline = scrlineptr(term->curs.y);
2916 /* Now we must check_boundary again, of course. */
2917 check_boundary(term, term->curs.x, term->curs.y);
2918 check_boundary(term, term->curs.x+2, term->curs.y);
2922 clear_cc(cline, term->curs.x);
2923 cline->chars[term->curs.x].chr = c;
2924 cline->chars[term->curs.x].attr = term->curr_attr;
2929 clear_cc(cline, term->curs.x);
2930 cline->chars[term->curs.x].chr = UCSWIDE;
2931 cline->chars[term->curs.x].attr = term->curr_attr;
2935 check_boundary(term, term->curs.x, term->curs.y);
2936 check_boundary(term, term->curs.x+1, term->curs.y);
2939 clear_cc(cline, term->curs.x);
2940 cline->chars[term->curs.x].chr = c;
2941 cline->chars[term->curs.x].attr = term->curr_attr;
2945 if (term->curs.x > 0) {
2946 int x = term->curs.x - 1;
2948 /* If we're in wrapnext state, the character
2949 * to combine with is _here_, not to our left. */
2954 * If the previous character is
2955 * UCSWIDE, back up another one.
2957 if (cline->chars[x].chr == UCSWIDE) {
2962 add_cc(cline, x, c);
2963 seen_disp_event(term);
2970 if (term->curs.x == term->cols) {
2972 term->wrapnext = TRUE;
2973 if (term->wrap && term->vt52_mode) {
2974 cline->lattr |= LATTR_WRAPPED;
2975 if (term->curs.y == term->marg_b)
2976 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2977 else if (term->curs.y < term->rows - 1)
2980 term->wrapnext = FALSE;
2983 seen_disp_event(term);
2989 * This state is virtually identical to SEEN_ESC, with the
2990 * exception that we have an OSC sequence in the pipeline,
2991 * and _if_ we see a backslash, we process it.
2995 term->termstate = TOPLEVEL;
2998 /* else fall through */
3000 if (c >= ' ' && c <= '/') {
3001 if (term->esc_query)
3002 term->esc_query = -1;
3004 term->esc_query = c;
3007 term->termstate = TOPLEVEL;
3008 switch (ANSI(c, term->esc_query)) {
3009 case '[': /* enter CSI mode */
3010 term->termstate = SEEN_CSI;
3011 term->esc_nargs = 1;
3012 term->esc_args[0] = ARG_DEFAULT;
3013 term->esc_query = FALSE;
3015 case ']': /* OSC: xterm escape sequences */
3016 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3017 compatibility(OTHER);
3018 term->termstate = SEEN_OSC;
3019 term->esc_args[0] = 0;
3021 case '7': /* DECSC: save cursor */
3022 compatibility(VT100);
3023 save_cursor(term, TRUE);
3025 case '8': /* DECRC: restore cursor */
3026 compatibility(VT100);
3027 save_cursor(term, FALSE);
3028 seen_disp_event(term);
3030 case '=': /* DECKPAM: Keypad application mode */
3031 compatibility(VT100);
3032 term->app_keypad_keys = TRUE;
3034 case '>': /* DECKPNM: Keypad numeric mode */
3035 compatibility(VT100);
3036 term->app_keypad_keys = FALSE;
3038 case 'D': /* IND: exactly equivalent to LF */
3039 compatibility(VT100);
3040 if (term->curs.y == term->marg_b)
3041 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3042 else if (term->curs.y < term->rows - 1)
3044 term->wrapnext = FALSE;
3045 seen_disp_event(term);
3047 case 'E': /* NEL: exactly equivalent to CR-LF */
3048 compatibility(VT100);
3050 if (term->curs.y == term->marg_b)
3051 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3052 else if (term->curs.y < term->rows - 1)
3054 term->wrapnext = FALSE;
3055 seen_disp_event(term);
3057 case 'M': /* RI: reverse index - backwards LF */
3058 compatibility(VT100);
3059 if (term->curs.y == term->marg_t)
3060 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3061 else if (term->curs.y > 0)
3063 term->wrapnext = FALSE;
3064 seen_disp_event(term);
3066 case 'Z': /* DECID: terminal type query */
3067 compatibility(VT100);
3069 ldisc_send(term->ldisc, term->id_string,
3070 strlen(term->id_string), 0);
3072 case 'c': /* RIS: restore power-on settings */
3073 compatibility(VT100);
3075 if (term->ldisc) /* cause ldisc to notice changes */
3076 ldisc_send(term->ldisc, NULL, 0, 0);
3077 if (term->reset_132) {
3078 if (!term->cfg.no_remote_resize)
3079 request_resize(term->frontend, 80, term->rows);
3080 term->reset_132 = 0;
3083 seen_disp_event(term);
3085 case 'H': /* HTS: set a tab */
3086 compatibility(VT100);
3087 term->tabs[term->curs.x] = TRUE;
3090 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3091 compatibility(VT100);
3097 for (i = 0; i < term->rows; i++) {
3098 ldata = scrlineptr(i);
3099 for (j = 0; j < term->cols; j++) {
3100 copy_termchar(ldata, j,
3101 &term->basic_erase_char);
3102 ldata->chars[j].chr = 'E';
3104 ldata->lattr = LATTR_NORM;
3107 seen_disp_event(term);
3108 scrtop.x = scrtop.y = 0;
3110 scrbot.y = term->rows;
3111 check_selection(term, scrtop, scrbot);
3115 case ANSI('3', '#'):
3116 case ANSI('4', '#'):
3117 case ANSI('5', '#'):
3118 case ANSI('6', '#'):
3119 compatibility(VT100);
3123 switch (ANSI(c, term->esc_query)) {
3124 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3127 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3130 case ANSI('5', '#'): /* DECSWL: normal */
3131 nlattr = LATTR_NORM;
3133 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3134 nlattr = LATTR_WIDE;
3137 scrlineptr(term->curs.y)->lattr = nlattr;
3140 /* GZD4: G0 designate 94-set */
3141 case ANSI('A', '('):
3142 compatibility(VT100);
3143 if (!term->cfg.no_remote_charset)
3144 term->cset_attr[0] = CSET_GBCHR;
3146 case ANSI('B', '('):
3147 compatibility(VT100);
3148 if (!term->cfg.no_remote_charset)
3149 term->cset_attr[0] = CSET_ASCII;
3151 case ANSI('0', '('):
3152 compatibility(VT100);
3153 if (!term->cfg.no_remote_charset)
3154 term->cset_attr[0] = CSET_LINEDRW;
3156 case ANSI('U', '('):
3157 compatibility(OTHER);
3158 if (!term->cfg.no_remote_charset)
3159 term->cset_attr[0] = CSET_SCOACS;
3161 /* G1D4: G1-designate 94-set */
3162 case ANSI('A', ')'):
3163 compatibility(VT100);
3164 if (!term->cfg.no_remote_charset)
3165 term->cset_attr[1] = CSET_GBCHR;
3167 case ANSI('B', ')'):
3168 compatibility(VT100);
3169 if (!term->cfg.no_remote_charset)
3170 term->cset_attr[1] = CSET_ASCII;
3172 case ANSI('0', ')'):
3173 compatibility(VT100);
3174 if (!term->cfg.no_remote_charset)
3175 term->cset_attr[1] = CSET_LINEDRW;
3177 case ANSI('U', ')'):
3178 compatibility(OTHER);
3179 if (!term->cfg.no_remote_charset)
3180 term->cset_attr[1] = CSET_SCOACS;
3182 /* DOCS: Designate other coding system */
3183 case ANSI('8', '%'): /* Old Linux code */
3184 case ANSI('G', '%'):
3185 compatibility(OTHER);
3186 if (!term->cfg.no_remote_charset)
3189 case ANSI('@', '%'):
3190 compatibility(OTHER);
3191 if (!term->cfg.no_remote_charset)
3197 term->termstate = TOPLEVEL; /* default */
3199 if (term->esc_nargs <= ARGS_MAX) {
3200 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3201 term->esc_args[term->esc_nargs - 1] = 0;
3202 term->esc_args[term->esc_nargs - 1] =
3203 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3205 term->termstate = SEEN_CSI;
3206 } else if (c == ';') {
3207 if (++term->esc_nargs <= ARGS_MAX)
3208 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3209 term->termstate = SEEN_CSI;
3210 } else if (c < '@') {
3211 if (term->esc_query)
3212 term->esc_query = -1;
3214 term->esc_query = TRUE;
3216 term->esc_query = c;
3217 term->termstate = SEEN_CSI;
3219 switch (ANSI(c, term->esc_query)) {
3220 case 'A': /* CUU: move up N lines */
3221 move(term, term->curs.x,
3222 term->curs.y - def(term->esc_args[0], 1), 1);
3223 seen_disp_event(term);
3225 case 'e': /* VPR: move down N lines */
3226 compatibility(ANSI);
3228 case 'B': /* CUD: Cursor down */
3229 move(term, term->curs.x,
3230 term->curs.y + def(term->esc_args[0], 1), 1);
3231 seen_disp_event(term);
3233 case ANSI('c', '>'): /* DA: report xterm version */
3234 compatibility(OTHER);
3235 /* this reports xterm version 136 so that VIM can
3236 use the drag messages from the mouse reporting */
3238 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3240 case 'a': /* HPR: move right N cols */
3241 compatibility(ANSI);
3243 case 'C': /* CUF: Cursor right */
3244 move(term, term->curs.x + def(term->esc_args[0], 1),
3246 seen_disp_event(term);
3248 case 'D': /* CUB: move left N cols */
3249 move(term, term->curs.x - def(term->esc_args[0], 1),
3251 seen_disp_event(term);
3253 case 'E': /* CNL: move down N lines and CR */
3254 compatibility(ANSI);
3256 term->curs.y + def(term->esc_args[0], 1), 1);
3257 seen_disp_event(term);
3259 case 'F': /* CPL: move up N lines and CR */
3260 compatibility(ANSI);
3262 term->curs.y - def(term->esc_args[0], 1), 1);
3263 seen_disp_event(term);
3266 case '`': /* HPA: set horizontal posn */
3267 compatibility(ANSI);
3268 move(term, def(term->esc_args[0], 1) - 1,
3270 seen_disp_event(term);
3272 case 'd': /* VPA: set vertical posn */
3273 compatibility(ANSI);
3274 move(term, term->curs.x,
3275 ((term->dec_om ? term->marg_t : 0) +
3276 def(term->esc_args[0], 1) - 1),
3277 (term->dec_om ? 2 : 0));
3278 seen_disp_event(term);
3281 case 'f': /* HVP: set horz and vert posns at once */
3282 if (term->esc_nargs < 2)
3283 term->esc_args[1] = ARG_DEFAULT;
3284 move(term, def(term->esc_args[1], 1) - 1,
3285 ((term->dec_om ? term->marg_t : 0) +
3286 def(term->esc_args[0], 1) - 1),
3287 (term->dec_om ? 2 : 0));
3288 seen_disp_event(term);
3290 case 'J': /* ED: erase screen or parts of it */
3292 unsigned int i = def(term->esc_args[0], 0) + 1;
3295 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3298 seen_disp_event(term);
3300 case 'K': /* EL: erase line or parts of it */
3302 unsigned int i = def(term->esc_args[0], 0) + 1;
3305 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3307 seen_disp_event(term);
3309 case 'L': /* IL: insert lines */
3310 compatibility(VT102);
3311 if (term->curs.y <= term->marg_b)
3312 scroll(term, term->curs.y, term->marg_b,
3313 -def(term->esc_args[0], 1), FALSE);
3314 seen_disp_event(term);
3316 case 'M': /* DL: delete lines */
3317 compatibility(VT102);
3318 if (term->curs.y <= term->marg_b)
3319 scroll(term, term->curs.y, term->marg_b,
3320 def(term->esc_args[0], 1),
3322 seen_disp_event(term);
3324 case '@': /* ICH: insert chars */
3325 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3326 compatibility(VT102);
3327 insch(term, def(term->esc_args[0], 1));
3328 seen_disp_event(term);
3330 case 'P': /* DCH: delete chars */
3331 compatibility(VT102);
3332 insch(term, -def(term->esc_args[0], 1));
3333 seen_disp_event(term);
3335 case 'c': /* DA: terminal type query */
3336 compatibility(VT100);
3337 /* This is the response for a VT102 */
3339 ldisc_send(term->ldisc, term->id_string,
3340 strlen(term->id_string), 0);
3342 case 'n': /* DSR: cursor position query */
3344 if (term->esc_args[0] == 6) {
3346 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3348 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3349 } else if (term->esc_args[0] == 5) {
3350 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3354 case 'h': /* SM: toggle modes to high */
3356 compatibility(VT100);
3359 for (i = 0; i < term->esc_nargs; i++)
3360 toggle_mode(term, term->esc_args[i],
3361 term->esc_query, TRUE);
3364 case 'i': /* MC: Media copy */
3366 compatibility(VT100);
3368 if (term->esc_nargs != 1) break;
3369 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3370 term->printing = TRUE;
3371 term->only_printing = !term->esc_query;
3372 term->print_state = 0;
3373 term_print_setup(term);
3374 } else if (term->esc_args[0] == 4 &&
3376 term_print_finish(term);
3380 case 'l': /* RM: toggle modes to low */
3382 compatibility(VT100);
3385 for (i = 0; i < term->esc_nargs; i++)
3386 toggle_mode(term, term->esc_args[i],
3387 term->esc_query, FALSE);
3390 case 'g': /* TBC: clear tabs */
3391 compatibility(VT100);
3392 if (term->esc_nargs == 1) {
3393 if (term->esc_args[0] == 0) {
3394 term->tabs[term->curs.x] = FALSE;
3395 } else if (term->esc_args[0] == 3) {
3397 for (i = 0; i < term->cols; i++)
3398 term->tabs[i] = FALSE;
3402 case 'r': /* DECSTBM: set scroll margins */
3403 compatibility(VT100);
3404 if (term->esc_nargs <= 2) {
3406 top = def(term->esc_args[0], 1) - 1;
3407 bot = (term->esc_nargs <= 1
3408 || term->esc_args[1] == 0 ?
3410 def(term->esc_args[1], term->rows)) - 1;
3411 if (bot >= term->rows)
3412 bot = term->rows - 1;
3413 /* VTTEST Bug 9 - if region is less than 2 lines
3414 * don't change region.
3416 if (bot - top > 0) {
3421 * I used to think the cursor should be
3422 * placed at the top of the newly marginned
3423 * area. Apparently not: VMS TPU falls over
3426 * Well actually it should for
3429 term->curs.y = (term->dec_om ?
3431 seen_disp_event(term);
3435 case 'm': /* SGR: set graphics rendition */
3438 * A VT100 without the AVO only had one
3439 * attribute, either underline or
3440 * reverse video depending on the
3441 * cursor type, this was selected by
3445 * This is sometimes DIM, eg on the
3448 * This is sometimes INVIS various ANSI.
3450 * This like 22 disables BOLD, DIM and INVIS
3452 * The ANSI colours appear on any
3453 * terminal that has colour (obviously)
3454 * but the interaction between sgr0 and
3455 * the colours varies but is usually
3456 * related to the background colour
3457 * erase item. The interaction between
3458 * colour attributes and the mono ones
3459 * is also very implementation
3462 * The 39 and 49 attributes are likely
3463 * to be unimplemented.
3466 for (i = 0; i < term->esc_nargs; i++) {
3467 switch (def(term->esc_args[i], 0)) {
3468 case 0: /* restore defaults */
3469 term->curr_attr = term->default_attr;
3471 case 1: /* enable bold */
3472 compatibility(VT100AVO);
3473 term->curr_attr |= ATTR_BOLD;
3475 case 21: /* (enable double underline) */
3476 compatibility(OTHER);
3477 case 4: /* enable underline */
3478 compatibility(VT100AVO);
3479 term->curr_attr |= ATTR_UNDER;
3481 case 5: /* enable blink */
3482 compatibility(VT100AVO);
3483 term->curr_attr |= ATTR_BLINK;
3485 case 6: /* SCO light bkgrd */
3486 compatibility(SCOANSI);
3487 term->blink_is_real = FALSE;
3488 term->curr_attr |= ATTR_BLINK;
3489 term_schedule_tblink(term);
3491 case 7: /* enable reverse video */
3492 term->curr_attr |= ATTR_REVERSE;
3494 case 10: /* SCO acs off */
3495 compatibility(SCOANSI);
3496 if (term->cfg.no_remote_charset) break;
3497 term->sco_acs = 0; break;
3498 case 11: /* SCO acs on */
3499 compatibility(SCOANSI);
3500 if (term->cfg.no_remote_charset) break;
3501 term->sco_acs = 1; break;
3502 case 12: /* SCO acs on, |0x80 */
3503 compatibility(SCOANSI);
3504 if (term->cfg.no_remote_charset) break;
3505 term->sco_acs = 2; break;
3506 case 22: /* disable bold */
3507 compatibility2(OTHER, VT220);
3508 term->curr_attr &= ~ATTR_BOLD;
3510 case 24: /* disable underline */
3511 compatibility2(OTHER, VT220);
3512 term->curr_attr &= ~ATTR_UNDER;
3514 case 25: /* disable blink */
3515 compatibility2(OTHER, VT220);
3516 term->curr_attr &= ~ATTR_BLINK;
3518 case 27: /* disable reverse video */
3519 compatibility2(OTHER, VT220);
3520 term->curr_attr &= ~ATTR_REVERSE;
3531 term->curr_attr &= ~ATTR_FGMASK;
3533 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3543 /* aixterm-style bright foreground */
3544 term->curr_attr &= ~ATTR_FGMASK;
3546 ((term->esc_args[i] - 90 + 8)
3549 case 39: /* default-foreground */
3550 term->curr_attr &= ~ATTR_FGMASK;
3551 term->curr_attr |= ATTR_DEFFG;
3562 term->curr_attr &= ~ATTR_BGMASK;
3564 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3574 /* aixterm-style bright background */
3575 term->curr_attr &= ~ATTR_BGMASK;
3577 ((term->esc_args[i] - 100 + 8)
3580 case 49: /* default-background */
3581 term->curr_attr &= ~ATTR_BGMASK;
3582 term->curr_attr |= ATTR_DEFBG;
3584 case 38: /* xterm 256-colour mode */
3585 if (i+2 < term->esc_nargs &&
3586 term->esc_args[i+1] == 5) {
3587 term->curr_attr &= ~ATTR_FGMASK;
3589 ((term->esc_args[i+2] & 0xFF)
3594 case 48: /* xterm 256-colour mode */
3595 if (i+2 < term->esc_nargs &&
3596 term->esc_args[i+1] == 5) {
3597 term->curr_attr &= ~ATTR_BGMASK;
3599 ((term->esc_args[i+2] & 0xFF)
3606 set_erase_char(term);
3609 case 's': /* save cursor */
3610 save_cursor(term, TRUE);
3612 case 'u': /* restore cursor */
3613 save_cursor(term, FALSE);
3614 seen_disp_event(term);
3616 case 't': /* DECSLPP: set page size - ie window height */
3618 * VT340/VT420 sequence DECSLPP, DEC only allows values
3619 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3620 * illegal values (eg first arg 1..9) for window changing
3623 if (term->esc_nargs <= 1
3624 && (term->esc_args[0] < 1 ||
3625 term->esc_args[0] >= 24)) {
3626 compatibility(VT340TEXT);
3627 if (!term->cfg.no_remote_resize)
3628 request_resize(term->frontend, term->cols,
3629 def(term->esc_args[0], 24));
3631 } else if (term->esc_nargs >= 1 &&
3632 term->esc_args[0] >= 1 &&
3633 term->esc_args[0] < 24) {
3634 compatibility(OTHER);
3636 switch (term->esc_args[0]) {
3640 set_iconic(term->frontend, FALSE);
3643 set_iconic(term->frontend, TRUE);
3646 if (term->esc_nargs >= 3) {
3647 if (!term->cfg.no_remote_resize)
3648 move_window(term->frontend,
3649 def(term->esc_args[1], 0),
3650 def(term->esc_args[2], 0));
3654 /* We should resize the window to a given
3655 * size in pixels here, but currently our
3656 * resizing code isn't healthy enough to
3661 set_zorder(term->frontend, TRUE);
3664 /* move to bottom */
3665 set_zorder(term->frontend, FALSE);
3668 refresh_window(term->frontend);
3671 if (term->esc_nargs >= 3) {
3672 if (!term->cfg.no_remote_resize)
3673 request_resize(term->frontend,
3674 def(term->esc_args[2], term->cfg.width),
3675 def(term->esc_args[1], term->cfg.height));
3679 if (term->esc_nargs >= 2)
3680 set_zoomed(term->frontend,
3686 ldisc_send(term->ldisc,
3687 is_iconic(term->frontend) ?
3688 "\033[1t" : "\033[2t", 4, 0);
3692 get_window_pos(term->frontend, &x, &y);
3693 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3694 ldisc_send(term->ldisc, buf, len, 0);
3699 get_window_pixels(term->frontend, &x, &y);
3700 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3701 ldisc_send(term->ldisc, buf, len, 0);
3706 len = sprintf(buf, "\033[8;%d;%dt",
3707 term->rows, term->cols);
3708 ldisc_send(term->ldisc, buf, len, 0);
3713 * Hmmm. Strictly speaking we
3714 * should return `the size of the
3715 * screen in characters', but
3716 * that's not easy: (a) window
3717 * furniture being what it is it's
3718 * hard to compute, and (b) in
3719 * resize-font mode maximising the
3720 * window wouldn't change the
3721 * number of characters. *shrug*. I
3722 * think we'll ignore it for the
3723 * moment and see if anyone
3724 * complains, and then ask them
3725 * what they would like it to do.
3730 !term->cfg.no_remote_qtitle) {
3731 p = get_window_title(term->frontend, TRUE);
3733 ldisc_send(term->ldisc, "\033]L", 3, 0);
3734 ldisc_send(term->ldisc, p, len, 0);
3735 ldisc_send(term->ldisc, "\033\\", 2, 0);
3740 !term->cfg.no_remote_qtitle) {
3741 p = get_window_title(term->frontend,FALSE);
3743 ldisc_send(term->ldisc, "\033]l", 3, 0);
3744 ldisc_send(term->ldisc, p, len, 0);
3745 ldisc_send(term->ldisc, "\033\\", 2, 0);
3751 case 'S': /* SU: Scroll up */
3752 compatibility(SCOANSI);
3753 scroll(term, term->marg_t, term->marg_b,
3754 def(term->esc_args[0], 1), TRUE);
3755 term->wrapnext = FALSE;
3756 seen_disp_event(term);
3758 case 'T': /* SD: Scroll down */
3759 compatibility(SCOANSI);
3760 scroll(term, term->marg_t, term->marg_b,
3761 -def(term->esc_args[0], 1), TRUE);
3762 term->wrapnext = FALSE;
3763 seen_disp_event(term);
3765 case ANSI('|', '*'): /* DECSNLS */
3767 * Set number of lines on screen
3768 * VT420 uses VGA like hardware and can
3769 * support any size in reasonable range
3770 * (24..49 AIUI) with no default specified.
3772 compatibility(VT420);
3773 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3774 if (!term->cfg.no_remote_resize)
3775 request_resize(term->frontend, term->cols,
3776 def(term->esc_args[0],
3781 case ANSI('|', '$'): /* DECSCPP */
3783 * Set number of columns per page
3784 * Docs imply range is only 80 or 132, but
3787 compatibility(VT340TEXT);
3788 if (term->esc_nargs <= 1) {
3789 if (!term->cfg.no_remote_resize)
3790 request_resize(term->frontend,
3791 def(term->esc_args[0],
3792 term->cfg.width), term->rows);
3796 case 'X': /* ECH: write N spaces w/o moving cursor */
3797 /* XXX VTTEST says this is vt220, vt510 manual
3799 compatibility(ANSIMIN);
3801 int n = def(term->esc_args[0], 1);
3803 int p = term->curs.x;
3804 termline *cline = scrlineptr(term->curs.y);
3806 if (n > term->cols - term->curs.x)
3807 n = term->cols - term->curs.x;
3808 cursplus = term->curs;
3810 check_boundary(term, term->curs.x, term->curs.y);
3811 check_boundary(term, term->curs.x+n, term->curs.y);
3812 check_selection(term, term->curs, cursplus);
3814 copy_termchar(cline, p++,
3816 seen_disp_event(term);
3819 case 'x': /* DECREQTPARM: report terminal characteristics */
3820 compatibility(VT100);
3823 int i = def(term->esc_args[0], 0);
3824 if (i == 0 || i == 1) {
3825 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3827 ldisc_send(term->ldisc, buf, 20, 0);
3832 compatibility(OTHER);
3834 int i = def(term->esc_args[0], 1);
3835 pos old_curs = term->curs;
3837 for(;i>0 && term->curs.x>0; i--) {
3840 } while (term->curs.x >0 &&
3841 !term->tabs[term->curs.x]);
3843 check_selection(term, old_curs, term->curs);
3846 case ANSI('c', '='): /* Hide or Show Cursor */
3847 compatibility(SCOANSI);
3848 switch(term->esc_args[0]) {
3849 case 0: /* hide cursor */
3850 term->cursor_on = FALSE;
3852 case 1: /* restore cursor */
3853 term->big_cursor = FALSE;
3854 term->cursor_on = TRUE;
3856 case 2: /* block cursor */
3857 term->big_cursor = TRUE;
3858 term->cursor_on = TRUE;
3862 case ANSI('C', '='):
3864 * set cursor start on scanline esc_args[0] and
3865 * end on scanline esc_args[1].If you set
3866 * the bottom scan line to a value less than
3867 * the top scan line, the cursor will disappear.
3869 compatibility(SCOANSI);
3870 if (term->esc_nargs >= 2) {
3871 if (term->esc_args[0] > term->esc_args[1])
3872 term->cursor_on = FALSE;
3874 term->cursor_on = TRUE;
3877 case ANSI('D', '='):
3878 compatibility(SCOANSI);
3879 term->blink_is_real = FALSE;
3880 term_schedule_tblink(term);
3881 if (term->esc_args[0]>=1)
3882 term->curr_attr |= ATTR_BLINK;
3884 term->curr_attr &= ~ATTR_BLINK;
3886 case ANSI('E', '='):
3887 compatibility(SCOANSI);
3888 term->blink_is_real = (term->esc_args[0] >= 1);
3889 term_schedule_tblink(term);
3891 case ANSI('F', '='): /* set normal foreground */
3892 compatibility(SCOANSI);
3893 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3895 (sco2ansicolour[term->esc_args[0] & 0x7] |
3896 (term->esc_args[0] & 0x8)) <<
3898 term->curr_attr &= ~ATTR_FGMASK;
3899 term->curr_attr |= colour;
3900 term->default_attr &= ~ATTR_FGMASK;
3901 term->default_attr |= colour;
3904 case ANSI('G', '='): /* set normal background */
3905 compatibility(SCOANSI);
3906 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3908 (sco2ansicolour[term->esc_args[0] & 0x7] |
3909 (term->esc_args[0] & 0x8)) <<
3911 term->curr_attr &= ~ATTR_BGMASK;
3912 term->curr_attr |= colour;
3913 term->default_attr &= ~ATTR_BGMASK;
3914 term->default_attr |= colour;
3917 case ANSI('L', '='):
3918 compatibility(SCOANSI);
3919 term->use_bce = (term->esc_args[0] <= 0);
3920 set_erase_char(term);
3922 case ANSI('p', '"'): /* DECSCL: set compat level */
3924 * Allow the host to make this emulator a
3925 * 'perfect' VT102. This first appeared in
3926 * the VT220, but we do need to get back to
3927 * PuTTY mode so I won't check it.
3929 * The arg in 40..42,50 are a PuTTY extension.
3930 * The 2nd arg, 8bit vs 7bit is not checked.
3932 * Setting VT102 mode should also change
3933 * the Fkeys to generate PF* codes as a
3934 * real VT102 has no Fkeys. The VT220 does
3935 * this, F11..F13 become ESC,BS,LF other
3936 * Fkeys send nothing.
3938 * Note ESC c will NOT change this!
3941 switch (term->esc_args[0]) {
3943 term->compatibility_level &= ~TM_VTXXX;
3944 term->compatibility_level |= TM_VT102;
3947 term->compatibility_level &= ~TM_VTXXX;
3948 term->compatibility_level |= TM_VT220;
3952 if (term->esc_args[0] > 60 &&
3953 term->esc_args[0] < 70)
3954 term->compatibility_level |= TM_VTXXX;
3958 term->compatibility_level &= TM_VTXXX;
3961 term->compatibility_level = TM_PUTTY;
3964 term->compatibility_level = TM_SCOANSI;
3968 term->compatibility_level = TM_PUTTY;
3974 /* Change the response to CSI c */
3975 if (term->esc_args[0] == 50) {
3978 strcpy(term->id_string, "\033[?");
3979 for (i = 1; i < term->esc_nargs; i++) {
3981 strcat(term->id_string, ";");
3982 sprintf(lbuf, "%d", term->esc_args[i]);
3983 strcat(term->id_string, lbuf);
3985 strcat(term->id_string, "c");
3988 /* Is this a good idea ?
3989 * Well we should do a soft reset at this point ...
3991 if (!has_compat(VT420) && has_compat(VT100)) {
3992 if (!term->cfg.no_remote_resize) {
3993 if (term->reset_132)
3994 request_resize(132, 24);
3996 request_resize(80, 24);
4004 term->osc_w = FALSE;
4006 case 'P': /* Linux palette sequence */
4007 term->termstate = SEEN_OSC_P;
4008 term->osc_strlen = 0;
4010 case 'R': /* Linux palette reset */
4011 palette_reset(term->frontend);
4012 term_invalidate(term);
4013 term->termstate = TOPLEVEL;
4015 case 'W': /* word-set */
4016 term->termstate = SEEN_OSC_W;
4029 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4033 * Grotty hack to support xterm and DECterm title
4034 * sequences concurrently.
4036 if (term->esc_args[0] == 2) {
4037 term->esc_args[0] = 1;
4040 /* else fall through */
4042 term->termstate = OSC_STRING;
4043 term->osc_strlen = 0;
4048 * This OSC stuff is EVIL. It takes just one character to get into
4049 * sysline mode and it's not initially obvious how to get out.
4050 * So I've added CR and LF as string aborts.
4051 * This shouldn't effect compatibility as I believe embedded
4052 * control characters are supposed to be interpreted (maybe?)
4053 * and they don't display anything useful anyway.
4057 if (c == '\012' || c == '\015') {
4058 term->termstate = TOPLEVEL;
4059 } else if (c == 0234 || c == '\007') {
4061 * These characters terminate the string; ST and BEL
4062 * terminate the sequence and trigger instant
4063 * processing of it, whereas ESC goes back to SEEN_ESC
4064 * mode unless it is followed by \, in which case it is
4065 * synonymous with ST in the first place.
4068 term->termstate = TOPLEVEL;
4069 } else if (c == '\033')
4070 term->termstate = OSC_MAYBE_ST;
4071 else if (term->osc_strlen < OSC_STR_MAX)
4072 term->osc_string[term->osc_strlen++] = (char)c;
4076 int max = (term->osc_strlen == 0 ? 21 : 16);
4078 if ((int)c >= '0' && (int)c <= '9')
4080 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4082 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4085 term->termstate = TOPLEVEL;
4088 term->osc_string[term->osc_strlen++] = val;
4089 if (term->osc_strlen >= 7) {
4090 palette_set(term->frontend, term->osc_string[0],
4091 term->osc_string[1] * 16 + term->osc_string[2],
4092 term->osc_string[3] * 16 + term->osc_string[4],
4093 term->osc_string[5] * 16 + term->osc_string[6]);
4094 term_invalidate(term);
4095 term->termstate = TOPLEVEL;
4111 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4114 term->termstate = OSC_STRING;
4115 term->osc_strlen = 0;
4119 term->termstate = TOPLEVEL;
4120 seen_disp_event(term);
4123 move(term, term->curs.x, term->curs.y - 1, 1);
4126 move(term, term->curs.x, term->curs.y + 1, 1);
4129 move(term, term->curs.x + 1, term->curs.y, 1);
4132 move(term, term->curs.x - 1, term->curs.y, 1);
4135 * From the VT100 Manual
4136 * NOTE: The special graphics characters in the VT100
4137 * are different from those in the VT52
4139 * From VT102 manual:
4140 * 137 _ Blank - Same
4141 * 140 ` Reserved - Humm.
4142 * 141 a Solid rectangle - Similar
4143 * 142 b 1/ - Top half of fraction for the
4144 * 143 c 3/ - subscript numbers below.
4147 * 146 f Degrees - Same
4148 * 147 g Plus or minus - Same
4150 * 151 i Ellipsis (dots)
4153 * 154 l Bar at scan 0
4154 * 155 m Bar at scan 1
4155 * 156 n Bar at scan 2
4156 * 157 o Bar at scan 3 - Similar
4157 * 160 p Bar at scan 4 - Similar
4158 * 161 q Bar at scan 5 - Similar
4159 * 162 r Bar at scan 6 - Same
4160 * 163 s Bar at scan 7 - Similar
4175 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4178 term->cset_attr[term->cset = 0] = CSET_ASCII;
4181 move(term, 0, 0, 0);
4184 if (term->curs.y == 0)
4185 scroll(term, 0, term->rows - 1, -1, TRUE);
4186 else if (term->curs.y > 0)
4188 term->wrapnext = FALSE;
4191 erase_lots(term, FALSE, FALSE, TRUE);
4195 erase_lots(term, TRUE, FALSE, TRUE);
4199 /* XXX Print cursor line */
4202 /* XXX Start controller mode */
4205 /* XXX Stop controller mode */
4209 term->termstate = VT52_Y1;
4213 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4216 term->app_keypad_keys = TRUE;
4219 term->app_keypad_keys = FALSE;
4222 /* XXX This should switch to VT100 mode not current or default
4223 * VT mode. But this will only have effect in a VT220+
4226 term->vt52_mode = FALSE;
4227 term->blink_is_real = term->cfg.blinktext;
4228 term_schedule_tblink(term);
4232 /* XXX Enter auto print mode */
4235 /* XXX Exit auto print mode */
4238 /* XXX Print screen */
4244 /* compatibility(ATARI) */
4245 move(term, 0, 0, 0);
4246 erase_lots(term, FALSE, FALSE, TRUE);
4250 /* compatibility(ATARI) */
4251 if (term->curs.y <= term->marg_b)
4252 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4255 /* compatibility(ATARI) */
4256 if (term->curs.y <= term->marg_b)
4257 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4260 /* compatibility(ATARI) */
4261 term->termstate = VT52_FG;
4264 /* compatibility(ATARI) */
4265 term->termstate = VT52_BG;
4268 /* compatibility(ATARI) */
4269 erase_lots(term, FALSE, TRUE, FALSE);
4273 /* compatibility(ATARI) */
4274 term->cursor_on = TRUE;
4277 /* compatibility(ATARI) */
4278 term->cursor_on = FALSE;
4280 /* case 'j': Save cursor position - broken on ST */
4281 /* case 'k': Restore cursor position */
4283 /* compatibility(ATARI) */
4284 erase_lots(term, TRUE, TRUE, TRUE);
4286 term->wrapnext = FALSE;
4289 /* compatibility(ATARI) */
4290 erase_lots(term, TRUE, TRUE, FALSE);
4293 /* compatibility(ATARI) */
4294 term->curr_attr |= ATTR_REVERSE;
4297 /* compatibility(ATARI) */
4298 term->curr_attr &= ~ATTR_REVERSE;
4300 case 'v': /* wrap Autowrap on - Wyse style */
4301 /* compatibility(ATARI) */
4304 case 'w': /* Autowrap off */
4305 /* compatibility(ATARI) */
4310 /* compatibility(OTHER) */
4311 term->vt52_bold = FALSE;
4312 term->curr_attr = ATTR_DEFAULT;
4313 set_erase_char(term);
4316 /* compatibility(VI50) */
4317 term->curr_attr |= ATTR_UNDER;
4320 /* compatibility(VI50) */
4321 term->curr_attr &= ~ATTR_UNDER;
4324 /* compatibility(VI50) */
4325 term->vt52_bold = TRUE;
4326 term->curr_attr |= ATTR_BOLD;
4329 /* compatibility(VI50) */
4330 term->vt52_bold = FALSE;
4331 term->curr_attr &= ~ATTR_BOLD;
4337 term->termstate = VT52_Y2;
4338 move(term, term->curs.x, c - ' ', 0);
4341 term->termstate = TOPLEVEL;
4342 move(term, c - ' ', term->curs.y, 0);
4347 term->termstate = TOPLEVEL;
4348 term->curr_attr &= ~ATTR_FGMASK;
4349 term->curr_attr &= ~ATTR_BOLD;
4350 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4351 set_erase_char(term);
4354 term->termstate = TOPLEVEL;
4355 term->curr_attr &= ~ATTR_BGMASK;
4356 term->curr_attr &= ~ATTR_BLINK;
4357 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4358 set_erase_char(term);
4361 default: break; /* placate gcc warning about enum use */
4363 if (term->selstate != NO_SELECTION) {
4364 pos cursplus = term->curs;
4366 check_selection(term, term->curs, cursplus);
4370 term_print_flush(term);
4371 if (term->cfg.logflush)
4372 logflush(term->logctx);
4376 * To prevent having to run the reasonably tricky bidi algorithm
4377 * too many times, we maintain a cache of the last lineful of data
4378 * fed to the algorithm on each line of the display.
4380 static int term_bidi_cache_hit(Terminal *term, int line,
4381 termchar *lbefore, int width)
4385 if (!term->pre_bidi_cache)
4386 return FALSE; /* cache doesn't even exist yet! */
4388 if (line >= term->bidi_cache_size)
4389 return FALSE; /* cache doesn't have this many lines */
4391 if (!term->pre_bidi_cache[line].chars)
4392 return FALSE; /* cache doesn't contain _this_ line */
4394 if (term->pre_bidi_cache[line].width != width)
4395 return FALSE; /* line is wrong width */
4397 for (i = 0; i < width; i++)
4398 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4399 return FALSE; /* line doesn't match cache */
4401 return TRUE; /* it didn't match. */
4404 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4405 termchar *lafter, bidi_char *wcTo,
4406 int width, int size)
4410 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4411 int j = term->bidi_cache_size;
4412 term->bidi_cache_size = line+1;
4413 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4414 term->bidi_cache_size,
4415 struct bidi_cache_entry);
4416 term->post_bidi_cache = sresize(term->post_bidi_cache,
4417 term->bidi_cache_size,
4418 struct bidi_cache_entry);
4419 while (j < term->bidi_cache_size) {
4420 term->pre_bidi_cache[j].chars =
4421 term->post_bidi_cache[j].chars = NULL;
4422 term->pre_bidi_cache[j].width =
4423 term->post_bidi_cache[j].width = -1;
4424 term->pre_bidi_cache[j].forward =
4425 term->post_bidi_cache[j].forward = NULL;
4426 term->pre_bidi_cache[j].backward =
4427 term->post_bidi_cache[j].backward = NULL;
4432 sfree(term->pre_bidi_cache[line].chars);
4433 sfree(term->post_bidi_cache[line].chars);
4434 sfree(term->post_bidi_cache[line].forward);
4435 sfree(term->post_bidi_cache[line].backward);
4437 term->pre_bidi_cache[line].width = width;
4438 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4439 term->post_bidi_cache[line].width = width;
4440 term->post_bidi_cache[line].chars = snewn(size, termchar);
4441 term->post_bidi_cache[line].forward = snewn(width, int);
4442 term->post_bidi_cache[line].backward = snewn(width, int);
4444 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4445 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4446 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4447 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4449 for (i = 0; i < width; i++) {
4450 int p = wcTo[i].index;
4452 assert(0 <= p && p < width);
4454 term->post_bidi_cache[line].backward[i] = p;
4455 term->post_bidi_cache[line].forward[p] = i;
4460 * Prepare the bidi information for a screen line. Returns the
4461 * transformed list of termchars, or NULL if no transformation at
4462 * all took place (because bidi is disabled). If return was
4463 * non-NULL, auxiliary information such as the forward and reverse
4464 * mappings of permutation position are available in
4465 * term->post_bidi_cache[scr_y].*.
4467 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4473 /* Do Arabic shaping and bidi. */
4474 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4476 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4478 if (term->wcFromTo_size < term->cols) {
4479 term->wcFromTo_size = term->cols;
4480 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4482 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4486 for(it=0; it<term->cols ; it++)
4488 unsigned long uc = (ldata->chars[it].chr);
4490 switch (uc & CSET_MASK) {
4492 if (!term->cfg.rawcnp) {
4493 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4497 uc = term->ucsdata->unitab_line[uc & 0xFF];
4500 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4503 switch (uc & CSET_MASK) {
4505 uc = term->ucsdata->unitab_font[uc & 0xFF];
4508 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4512 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4514 term->wcFrom[it].index = it;
4518 do_bidi(term->wcFrom, term->cols);
4520 /* this is saved iff done from inside the shaping */
4521 if(!term->cfg.bidi && term->cfg.arabicshaping)
4522 for(it=0; it<term->cols; it++)
4523 term->wcTo[it] = term->wcFrom[it];
4525 if(!term->cfg.arabicshaping)
4526 do_shape(term->wcFrom, term->wcTo, term->cols);
4528 if (term->ltemp_size < ldata->size) {
4529 term->ltemp_size = ldata->size;
4530 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4534 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4536 for(it=0; it<term->cols ; it++)
4538 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4539 if (term->ltemp[it].cc_next)
4540 term->ltemp[it].cc_next -=
4541 it - term->wcTo[it].index;
4543 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4544 term->ltemp[it].chr = term->wcTo[it].wc;
4546 term_bidi_cache_store(term, scr_y, ldata->chars,
4547 term->ltemp, term->wcTo,
4548 term->cols, ldata->size);
4550 lchars = term->ltemp;
4552 lchars = term->post_bidi_cache[scr_y].chars;
4562 * Given a context, update the window. Out of paranoia, we don't
4563 * allow WM_PAINT responses to do scrolling optimisations.
4565 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4567 int i, j, our_curs_y, our_curs_x;
4572 #ifdef OPTIMISE_SCROLL
4573 struct scrollregion *sr;
4574 #endif /* OPTIMISE_SCROLL */
4578 ch = snewn(chlen, wchar_t);
4580 newline = snewn(term->cols, termchar);
4582 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4585 * screen array, disptop, scrtop,
4587 * cfg.blinkpc, blink_is_real, tblinker,
4588 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4591 /* Has the cursor position or type changed ? */
4592 if (term->cursor_on) {
4593 if (term->has_focus) {
4594 if (term->cblinker || !term->cfg.blink_cur)
4595 cursor = TATTR_ACTCURS;
4599 cursor = TATTR_PASCURS;
4601 cursor |= TATTR_RIGHTCURS;
4604 our_curs_y = term->curs.y - term->disptop;
4607 * Adjust the cursor position:
4609 * - in the case where it's resting on the right-hand half
4610 * of a CJK wide character. xterm's behaviour here,
4611 * which seems adequate to me, is to display the cursor
4612 * covering the _whole_ character, exactly as if it were
4613 * one space to the left.
4615 termline *ldata = lineptr(term->curs.y);
4618 our_curs_x = term->curs.x;
4620 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4621 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4623 lchars = ldata->chars;
4625 if (our_curs_x > 0 &&
4626 lchars[our_curs_x].chr == UCSWIDE)
4633 * If the cursor is not where it was last time we painted, and
4634 * its previous position is visible on screen, invalidate its
4635 * previous position.
4637 if (term->dispcursy >= 0 &&
4638 (term->curstype != cursor ||
4639 term->dispcursy != our_curs_y ||
4640 term->dispcursx != our_curs_x)) {
4641 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4644 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4645 dispcurs[-1].attr |= ATTR_INVALID;
4646 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4647 dispcurs[1].attr |= ATTR_INVALID;
4648 dispcurs->attr |= ATTR_INVALID;
4652 term->dispcursx = term->dispcursy = -1;
4654 #ifdef OPTIMISE_SCROLL
4656 sr = term->scrollhead;
4658 struct scrollregion *next = sr->next;
4659 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4663 term->scrollhead = term->scrolltail = NULL;
4664 #endif /* OPTIMISE_SCROLL */
4666 /* The normal screen data */
4667 for (i = 0; i < term->rows; i++) {
4670 int dirty_line, dirty_run, selected;
4671 unsigned long attr = 0, cset = 0;
4672 int updated_line = 0;
4675 int last_run_dirty = 0;
4676 int laststart, dirtyrect;
4679 scrpos.y = i + term->disptop;
4680 ldata = lineptr(scrpos.y);
4682 /* Do Arabic shaping and bidi. */
4683 lchars = term_bidi_line(term, ldata, i);
4685 backward = term->post_bidi_cache[i].backward;
4687 lchars = ldata->chars;
4692 * First loop: work along the line deciding what we want
4693 * each character cell to look like.
4695 for (j = 0; j < term->cols; j++) {
4696 unsigned long tattr, tchar;
4697 termchar *d = lchars + j;
4698 scrpos.x = backward ? backward[j] : j;
4703 if (!term->cfg.ansi_colour)
4704 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4705 ATTR_DEFFG | ATTR_DEFBG;
4707 if (!term->cfg.xterm_256_colour) {
4709 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4710 if (colour >= 16 && colour < 256)
4711 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4712 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4713 if (colour >= 16 && colour < 256)
4714 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4717 switch (tchar & CSET_MASK) {
4719 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4722 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4725 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4728 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4731 /* Video reversing things */
4732 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4733 if (term->seltype == LEXICOGRAPHIC)
4734 selected = (posle(term->selstart, scrpos) &&
4735 poslt(scrpos, term->selend));
4737 selected = (posPle(term->selstart, scrpos) &&
4738 posPlt(scrpos, term->selend));
4742 ^ (selected ? ATTR_REVERSE : 0));
4744 /* 'Real' blinking ? */
4745 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4746 if (term->has_focus && term->tblinker) {
4747 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4749 tattr &= ~ATTR_BLINK;
4753 * Check the font we'll _probably_ be using to see if
4754 * the character is wide when we don't want it to be.
4756 if (tchar != term->disptext[i]->chars[j].chr ||
4757 tattr != (term->disptext[i]->chars[j].attr &~
4758 (ATTR_NARROW | DATTR_MASK))) {
4759 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4760 tattr |= ATTR_NARROW;
4761 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4762 tattr |= ATTR_NARROW;
4764 if (i == our_curs_y && j == our_curs_x) {
4766 term->curstype = cursor;
4767 term->dispcursx = j;
4768 term->dispcursy = i;
4772 newline[j].attr = tattr;
4773 newline[j].chr = tchar;
4774 /* Combining characters are still read from lchars */
4775 newline[j].cc_next = 0;
4779 * Now loop over the line again, noting where things have
4782 * During this loop, we keep track of where we last saw
4783 * DATTR_STARTRUN. Any mismatch automatically invalidates
4784 * _all_ of the containing run that was last printed: that
4785 * is, any rectangle that was drawn in one go in the
4786 * previous update should be either left completely alone
4787 * or overwritten in its entirety. This, along with the
4788 * expectation that front ends clip all text runs to their
4789 * bounding rectangle, should solve any possible problems
4790 * with fonts that overflow their character cells.
4794 for (j = 0; j < term->cols; j++) {
4795 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
4800 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
4801 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
4802 != newline[j].attr) {
4805 for (k = laststart; k < j; k++)
4806 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
4812 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4816 * Finally, loop once more and actually do the drawing.
4818 dirty_run = dirty_line = (ldata->lattr !=
4819 term->disptext[i]->lattr);
4820 term->disptext[i]->lattr = ldata->lattr;
4822 for (j = 0; j < term->cols; j++) {
4823 unsigned long tattr, tchar;
4824 int break_run, do_copy;
4825 termchar *d = lchars + j;
4827 tattr = newline[j].attr;
4828 tchar = newline[j].chr;
4830 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4833 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4835 /* Special hack for VT100 Linedraw glyphs */
4836 if (tchar >= 0x23BA && tchar <= 0x23BD)
4840 * Separate out sequences of characters that have the
4841 * same CSET, if that CSET is a magic one.
4843 if (CSET_OF(tchar) != cset)
4847 * Break on both sides of any combined-character cell.
4849 if (d->cc_next != 0 ||
4850 (j > 0 && d[-1].cc_next != 0))
4853 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4854 if (term->disptext[i]->chars[j].chr == tchar &&
4855 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
4857 else if (!dirty_run && ccount == 1)
4862 if ((dirty_run || last_run_dirty) && ccount > 0) {
4863 do_text(ctx, start, i, ch, ccount, attr,
4865 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4866 do_cursor(ctx, start, i, ch, ccount, attr,
4874 cset = CSET_OF(tchar);
4875 if (term->ucsdata->dbcs_screenfont)
4876 last_run_dirty = dirty_run;
4877 dirty_run = dirty_line;
4881 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4887 if (ccount >= chlen) {
4888 chlen = ccount + 256;
4889 ch = sresize(ch, chlen, wchar_t);
4891 ch[ccount++] = (wchar_t) tchar;
4896 while (dd->cc_next) {
4897 unsigned long schar;
4902 switch (schar & CSET_MASK) {
4904 schar = term->ucsdata->unitab_line[schar & 0xFF];
4907 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4910 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4914 if (ccount >= chlen) {
4915 chlen = ccount + 256;
4916 ch = sresize(ch, chlen, wchar_t);
4918 ch[ccount++] = (wchar_t) schar;
4921 attr |= TATTR_COMBINING;
4925 copy_termchar(term->disptext[i], j, d);
4926 term->disptext[i]->chars[j].chr = tchar;
4927 term->disptext[i]->chars[j].attr = tattr;
4929 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
4932 /* If it's a wide char step along to the next one. */
4933 if (tattr & ATTR_WIDE) {
4934 if (++j < term->cols) {
4937 * By construction above, the cursor should not
4938 * be on the right-hand half of this character.
4941 assert(!(i == our_curs_y && j == our_curs_x));
4942 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4944 copy_termchar(term->disptext[i], j, d);
4948 if (dirty_run && ccount > 0) {
4949 do_text(ctx, start, i, ch, ccount, attr,
4951 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4952 do_cursor(ctx, start, i, ch, ccount, attr,
4966 * Invalidate the whole screen so it will be repainted in full.
4968 void term_invalidate(Terminal *term)
4972 for (i = 0; i < term->rows; i++)
4973 for (j = 0; j < term->cols; j++)
4974 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4976 term_schedule_update(term);
4980 * Paint the window in response to a WM_PAINT message.
4982 void term_paint(Terminal *term, Context ctx,
4983 int left, int top, int right, int bottom, int immediately)
4986 if (left < 0) left = 0;
4987 if (top < 0) top = 0;
4988 if (right >= term->cols) right = term->cols-1;
4989 if (bottom >= term->rows) bottom = term->rows-1;
4991 for (i = top; i <= bottom && i < term->rows; i++) {
4992 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
4993 for (j = left; j <= right && j < term->cols; j++)
4994 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4996 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
4997 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5001 do_paint (term, ctx, FALSE);
5003 term_schedule_update(term);
5008 * Attempt to scroll the scrollback. The second parameter gives the
5009 * position we want to scroll to; the first is +1 to denote that
5010 * this position is relative to the beginning of the scrollback, -1
5011 * to denote it is relative to the end, and 0 to denote that it is
5012 * relative to the current position.
5014 void term_scroll(Terminal *term, int rel, int where)
5016 int sbtop = -sblines(term);
5017 #ifdef OPTIMISE_SCROLL
5018 int olddisptop = term->disptop;
5020 #endif /* OPTIMISE_SCROLL */
5022 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5023 if (term->disptop < sbtop)
5024 term->disptop = sbtop;
5025 if (term->disptop > 0)
5028 #ifdef OPTIMISE_SCROLL
5029 shift = (term->disptop - olddisptop);
5030 if (shift < term->rows && shift > -term->rows)
5031 scroll_display(term, 0, term->rows - 1, shift);
5032 #endif /* OPTIMISE_SCROLL */
5036 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5039 wchar_t *wbptr; /* where next char goes within workbuf */
5041 int wblen = 0; /* workbuf len */
5042 int buflen; /* amount of memory allocated to workbuf */
5044 buflen = 5120; /* Default size */
5045 workbuf = snewn(buflen, wchar_t);
5046 wbptr = workbuf; /* start filling here */
5047 old_top_x = top.x; /* needed for rect==1 */
5049 while (poslt(top, bottom)) {
5051 termline *ldata = lineptr(top.y);
5055 * nlpos will point at the maximum position on this line we
5056 * should copy up to. So we start it at the end of the
5060 nlpos.x = term->cols;
5063 * ... move it backwards if there's unused space at the end
5064 * of the line (and also set `nl' if this is the case,
5065 * because in normal selection mode this means we need a
5066 * newline at the end)...
5068 if (!(ldata->lattr & LATTR_WRAPPED)) {
5069 while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5070 !ldata->chars[nlpos.x - 1].cc_next &&
5073 if (poslt(nlpos, bottom))
5075 } else if (ldata->lattr & LATTR_WRAPPED2) {
5076 /* Ignore the last char on the line in a WRAPPED2 line. */
5081 * ... and then clip it to the terminal x coordinate if
5082 * we're doing rectangular selection. (In this case we
5083 * still did the above, so that copying e.g. the right-hand
5084 * column from a table doesn't fill with spaces on the
5088 if (nlpos.x > bottom.x)
5090 nl = (top.y < bottom.y);
5093 while (poslt(top, bottom) && poslt(top, nlpos)) {
5096 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5098 wchar_t cbuf[16], *p;
5102 if (ldata->chars[x].chr == UCSWIDE) {
5108 int uc = ldata->chars[x].chr;
5110 switch (uc & CSET_MASK) {
5112 if (!term->cfg.rawcnp) {
5113 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5117 uc = term->ucsdata->unitab_line[uc & 0xFF];
5120 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5123 switch (uc & CSET_MASK) {
5125 uc = term->ucsdata->unitab_font[uc & 0xFF];
5128 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5132 set = (uc & CSET_MASK);
5133 c = (uc & ~CSET_MASK);
5137 if (DIRECT_FONT(uc)) {
5138 if (c >= ' ' && c != 0x7F) {
5142 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5144 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5145 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5149 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5153 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5160 for (p = cbuf; *p; p++) {
5161 /* Enough overhead for trailing NL and nul */
5162 if (wblen >= buflen - 16) {
5164 workbuf = sresize(workbuf, buflen, wchar_t);
5165 wbptr = workbuf + wblen;
5171 if (ldata->chars[x].cc_next)
5172 x += ldata->chars[x].cc_next;
5180 for (i = 0; i < sel_nl_sz; i++) {
5182 *wbptr++ = sel_nl[i];
5186 top.x = rect ? old_top_x : 0;
5190 #if SELECTION_NUL_TERMINATED
5194 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
5195 if (buflen > 0) /* indicates we allocated this buffer */
5199 void term_copyall(Terminal *term)
5203 tree234 *screen = term->screen;
5204 top.y = -sblines(term);
5206 bottom.y = find_last_nonempty_line(term, screen);
5207 bottom.x = term->cols;
5208 clipme(term, top, bottom, 0, TRUE);
5212 * The wordness array is mainly for deciding the disposition of the
5213 * US-ASCII characters.
5215 static int wordtype(Terminal *term, int uc)
5218 int start, end, ctype;
5220 static const struct ucsword ucs_words[] = {
5226 0x037e, 0x037e, 1}, /* Greek question mark */
5228 0x0387, 0x0387, 1}, /* Greek ano teleia */
5230 0x055a, 0x055f, 1}, /* Armenian punctuation */
5232 0x0589, 0x0589, 1}, /* Armenian full stop */
5234 0x0700, 0x070d, 1}, /* Syriac punctuation */
5236 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5238 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5240 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5242 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5244 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5246 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5248 0x2000, 0x200a, 0}, /* Various spaces */
5250 0x2070, 0x207f, 2}, /* superscript */
5252 0x2080, 0x208f, 2}, /* subscript */
5254 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5256 0x3000, 0x3000, 0}, /* ideographic space */
5258 0x3001, 0x3020, 1}, /* ideographic punctuation */
5260 0x303f, 0x309f, 3}, /* Hiragana */
5262 0x30a0, 0x30ff, 3}, /* Katakana */
5264 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5266 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5268 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5270 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5272 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5274 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5276 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5278 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5280 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5284 const struct ucsword *wptr;
5286 switch (uc & CSET_MASK) {
5288 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5291 uc = term->ucsdata->unitab_line[uc & 0xFF];
5294 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5297 switch (uc & CSET_MASK) {
5299 uc = term->ucsdata->unitab_font[uc & 0xFF];
5302 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5306 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5307 * fail as there's such a thing as a double width space. :-(
5309 if (term->ucsdata->dbcs_screenfont &&
5310 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5314 return term->wordness[uc];
5316 for (wptr = ucs_words; wptr->start; wptr++) {
5317 if (uc >= wptr->start && uc <= wptr->end)
5325 * Spread the selection outwards according to the selection mode.
5327 static pos sel_spread_half(Terminal *term, pos p, int dir)
5331 int topy = -sblines(term);
5333 ldata = lineptr(p.y);
5335 switch (term->selmode) {
5338 * In this mode, every character is a separate unit, except
5339 * for runs of spaces at the end of a non-wrapping line.
5341 if (!(ldata->lattr & LATTR_WRAPPED)) {
5342 termchar *q = ldata->chars + term->cols;
5343 while (q > ldata->chars &&
5344 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5346 if (q == ldata->chars + term->cols)
5348 if (p.x >= q - ldata->chars)
5349 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5354 * In this mode, the units are maximal runs of characters
5355 * whose `wordness' has the same value.
5357 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5360 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5361 term->cols-1 : term->cols);
5362 if (p.x < maxcols-1) {
5363 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5368 if (ldata->lattr & LATTR_WRAPPED) {
5370 ldata2 = lineptr(p.y+1);
5371 if (wordtype(term, UCSGET(ldata2->chars, 0))
5388 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5397 ldata2 = lineptr(p.y-1);
5398 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5399 term->cols-1 : term->cols);
5400 if (ldata2->lattr & LATTR_WRAPPED) {
5401 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5419 * In this mode, every line is a unit.
5421 p.x = (dir == -1 ? 0 : term->cols - 1);
5429 static void sel_spread(Terminal *term)
5431 if (term->seltype == LEXICOGRAPHIC) {
5432 term->selstart = sel_spread_half(term, term->selstart, -1);
5433 decpos(term->selend);
5434 term->selend = sel_spread_half(term, term->selend, +1);
5435 incpos(term->selend);
5439 void term_do_paste(Terminal *term)
5444 get_clip(term->frontend, &data, &len);
5445 if (data && len > 0) {
5448 term_seen_key_event(term); /* pasted data counts */
5450 if (term->paste_buffer)
5451 sfree(term->paste_buffer);
5452 term->paste_pos = term->paste_hold = term->paste_len = 0;
5453 term->paste_buffer = snewn(len, wchar_t);
5456 while (p < data + len) {
5457 while (p < data + len &&
5458 !(p <= data + len - sel_nl_sz &&
5459 !memcmp(p, sel_nl, sizeof(sel_nl))))
5464 for (i = 0; i < p - q; i++) {
5465 term->paste_buffer[term->paste_len++] = q[i];
5469 if (p <= data + len - sel_nl_sz &&
5470 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5471 term->paste_buffer[term->paste_len++] = '\015';
5477 /* Assume a small paste will be OK in one go. */
5478 if (term->paste_len < 256) {
5480 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5481 if (term->paste_buffer)
5482 sfree(term->paste_buffer);
5483 term->paste_buffer = 0;
5484 term->paste_pos = term->paste_hold = term->paste_len = 0;
5487 get_clip(term->frontend, NULL, NULL);
5490 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5491 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5495 int raw_mouse = (term->xterm_mouse &&
5496 !term->cfg.no_mouse_rep &&
5497 !(term->cfg.mouse_override && shift));
5498 int default_seltype;
5502 if (a == MA_DRAG && !raw_mouse)
5503 term_scroll(term, 0, -1);
5505 if (y >= term->rows) {
5507 if (a == MA_DRAG && !raw_mouse)
5508 term_scroll(term, 0, +1);
5517 if (x >= term->cols)
5520 selpoint.y = y + term->disptop;
5521 ldata = lineptr(selpoint.y);
5523 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5527 * Transform x through the bidi algorithm to find the _logical_
5528 * click point from the physical one.
5530 if (term_bidi_line(term, ldata, y) != NULL) {
5531 x = term->post_bidi_cache[y].backward[x];
5538 int encstate = 0, r, c;
5545 encstate = 0x20; /* left button down */
5556 case MBT_WHEEL_DOWN:
5559 default: break; /* placate gcc warning about enum use */
5563 if (term->xterm_mouse == 1)
5569 term->mouse_is_down = 0;
5572 if (term->mouse_is_down == braw)
5574 term->mouse_is_down = braw;
5576 default: break; /* placate gcc warning about enum use */
5585 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5586 ldisc_send(term->ldisc, abuf, 6, 0);
5592 * Set the selection type (rectangular or normal) at the start
5593 * of a selection attempt, from the state of Alt.
5595 if (!alt ^ !term->cfg.rect_select)
5596 default_seltype = RECTANGULAR;
5598 default_seltype = LEXICOGRAPHIC;
5600 if (term->selstate == NO_SELECTION) {
5601 term->seltype = default_seltype;
5604 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5606 term->selstate = ABOUT_TO;
5607 term->seltype = default_seltype;
5608 term->selanchor = selpoint;
5609 term->selmode = SM_CHAR;
5610 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5612 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5613 term->selstate = DRAGGING;
5614 term->selstart = term->selanchor = selpoint;
5615 term->selend = term->selstart;
5616 incpos(term->selend);
5618 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5619 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5620 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5622 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5623 term->selstate == SELECTED) {
5624 if (term->seltype == LEXICOGRAPHIC) {
5626 * For normal selection, we extend by moving
5627 * whichever end of the current selection is closer
5630 if (posdiff(selpoint, term->selstart) <
5631 posdiff(term->selend, term->selstart) / 2) {
5632 term->selanchor = term->selend;
5633 decpos(term->selanchor);
5635 term->selanchor = term->selstart;
5639 * For rectangular selection, we have a choice of
5640 * _four_ places to put selanchor and selpoint: the
5641 * four corners of the selection.
5643 if (2*selpoint.x < term->selstart.x + term->selend.x)
5644 term->selanchor.x = term->selend.x-1;
5646 term->selanchor.x = term->selstart.x;
5648 if (2*selpoint.y < term->selstart.y + term->selend.y)
5649 term->selanchor.y = term->selend.y;
5651 term->selanchor.y = term->selstart.y;
5653 term->selstate = DRAGGING;
5655 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5656 term->selanchor = selpoint;
5657 term->selstate = DRAGGING;
5658 if (term->seltype == LEXICOGRAPHIC) {
5660 * For normal selection, we set (selstart,selend) to
5661 * (selpoint,selanchor) in some order.
5663 if (poslt(selpoint, term->selanchor)) {
5664 term->selstart = selpoint;
5665 term->selend = term->selanchor;
5666 incpos(term->selend);
5668 term->selstart = term->selanchor;
5669 term->selend = selpoint;
5670 incpos(term->selend);
5674 * For rectangular selection, we may need to
5675 * interchange x and y coordinates (if the user has
5676 * dragged in the -x and +y directions, or vice versa).
5678 term->selstart.x = min(term->selanchor.x, selpoint.x);
5679 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5680 term->selstart.y = min(term->selanchor.y, selpoint.y);
5681 term->selend.y = max(term->selanchor.y, selpoint.y);
5684 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5686 if (term->selstate == DRAGGING) {
5688 * We've completed a selection. We now transfer the
5689 * data to the clipboard.
5691 clipme(term, term->selstart, term->selend,
5692 (term->seltype == RECTANGULAR), FALSE);
5693 term->selstate = SELECTED;
5695 term->selstate = NO_SELECTION;
5696 } else if (bcooked == MBT_PASTE
5698 #if MULTICLICK_ONLY_EVENT
5699 || a == MA_2CLK || a == MA_3CLK
5702 request_paste(term->frontend);
5708 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5709 unsigned int modifiers, unsigned int flags)
5713 int prependesc = FALSE;
5717 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5718 for (i = 0; i < tlen; i++)
5719 fprintf(stderr, " %04x", (unsigned)text[i]);
5720 fprintf(stderr, "\n");
5724 if ((flags & PKF_REPEAT) && term->repeat_off)
5727 /* Currently, Meta always just prefixes everything with ESC. */
5728 if (modifiers & PKM_META)
5730 modifiers &= ~PKM_META;
5733 * Alt is only used for Alt+keypad, which isn't supported yet, so
5736 modifiers &= ~PKM_ALT;
5738 /* Standard local function keys */
5739 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5741 if (keysym == PK_PAGEUP)
5742 /* scroll up one page */;
5743 if (keysym == PK_PAGEDOWN)
5744 /* scroll down on page */;
5745 if (keysym == PK_INSERT)
5746 term_do_paste(term);
5749 if (keysym == PK_PAGEUP)
5750 /* scroll up one line */;
5751 if (keysym == PK_PAGEDOWN)
5752 /* scroll down one line */;
5753 /* Control-Numlock for app-keypad mode switch */
5754 if (keysym == PK_PF1)
5755 term->app_keypad_keys ^= 1;
5759 if (modifiers & PKM_ALT) {
5760 /* Alt+F4 (close) */
5761 /* Alt+Return (full screen) */
5762 /* Alt+Space (system menu) */
5765 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5766 text[0] >= 0x20 && text[0] <= 0x7e) {
5767 /* ASCII chars + Control */
5768 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5769 (text[0] >= 0x61 && text[0] <= 0x7a))
5773 * Control-2 should return ^@ (0x00), Control-6 should return
5774 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5775 * the DOS keyboard handling did it, and we have nothing better
5776 * to do with the key combo in question, we'll also map
5777 * Control-Backquote to ^\ (0x1C).
5780 case ' ': text[0] = 0x00; break;
5781 case '-': text[0] = 0x1f; break;
5782 case '/': text[0] = 0x1f; break;
5783 case '2': text[0] = 0x00; break;
5784 case '3': text[0] = 0x1b; break;
5785 case '4': text[0] = 0x1c; break;
5786 case '5': text[0] = 0x1d; break;
5787 case '6': text[0] = 0x1e; break;
5788 case '7': text[0] = 0x1f; break;
5789 case '8': text[0] = 0x7f; break;
5790 case '`': text[0] = 0x1c; break;
5795 /* Nethack keypad */
5796 if (term->cfg.nethack_keypad) {
5799 case PK_KP1: c = 'b'; break;
5800 case PK_KP2: c = 'j'; break;
5801 case PK_KP3: c = 'n'; break;
5802 case PK_KP4: c = 'h'; break;
5803 case PK_KP5: c = '.'; break;
5804 case PK_KP6: c = 'l'; break;
5805 case PK_KP7: c = 'y'; break;
5806 case PK_KP8: c = 'k'; break;
5807 case PK_KP9: c = 'u'; break;
5808 default: break; /* else gcc warns `enum value not used' */
5812 if (modifiers & PKM_CONTROL)
5814 else if (modifiers & PKM_SHIFT)
5822 /* Numeric Keypad */
5823 if (PK_ISKEYPAD(keysym)) {
5827 * In VT400 mode, PFn always emits an escape sequence. In
5828 * Linux and tilde modes, this only happens in app keypad mode.
5830 if (term->cfg.funky_type == FUNKY_VT400 ||
5831 ((term->cfg.funky_type == FUNKY_LINUX ||
5832 term->cfg.funky_type == FUNKY_TILDE) &&
5833 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5835 case PK_PF1: xkey = 'P'; break;
5836 case PK_PF2: xkey = 'Q'; break;
5837 case PK_PF3: xkey = 'R'; break;
5838 case PK_PF4: xkey = 'S'; break;
5839 default: break; /* else gcc warns `enum value not used' */
5842 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5844 case PK_KP0: xkey = 'p'; break;
5845 case PK_KP1: xkey = 'q'; break;
5846 case PK_KP2: xkey = 'r'; break;
5847 case PK_KP3: xkey = 's'; break;
5848 case PK_KP4: xkey = 't'; break;
5849 case PK_KP5: xkey = 'u'; break;
5850 case PK_KP6: xkey = 'v'; break;
5851 case PK_KP7: xkey = 'w'; break;
5852 case PK_KP8: xkey = 'x'; break;
5853 case PK_KP9: xkey = 'y'; break;
5854 case PK_KPDECIMAL: xkey = 'n'; break;
5855 case PK_KPENTER: xkey = 'M'; break;
5856 default: break; /* else gcc warns `enum value not used' */
5858 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5860 * xterm can't see the layout of the keypad, so it has
5861 * to rely on the X keysyms returned by the keys.
5862 * Hence, we look at the strings here, not the PuTTY
5863 * keysyms (which describe the layout).
5867 if (modifiers & PKM_SHIFT)
5872 case '/': xkey = 'o'; break;
5873 case '*': xkey = 'j'; break;
5874 case '-': xkey = 'm'; break;
5878 * In all other modes, we try to retain the layout of
5879 * the DEC keypad in application mode.
5883 /* This key covers the '-' and ',' keys on a VT220 */
5884 if (modifiers & PKM_SHIFT)
5885 xkey = 'm'; /* VT220 '-' */
5887 xkey = 'l'; /* VT220 ',' */
5889 case PK_KPMINUS: xkey = 'm'; break;
5890 case PK_KPCOMMA: xkey = 'l'; break;
5891 default: break; /* else gcc warns `enum value not used' */
5896 if (term->vt52_mode) {
5897 if (xkey >= 'P' && xkey <= 'S')
5898 p += sprintf((char *) p, "\x1B%c", xkey);
5900 p += sprintf((char *) p, "\x1B?%c", xkey);
5902 p += sprintf((char *) p, "\x1BO%c", xkey);
5905 /* Not in application mode -- treat the number pad as arrow keys? */
5906 if ((flags & PKF_NUMLOCK) == 0) {
5908 case PK_KP0: keysym = PK_INSERT; break;
5909 case PK_KP1: keysym = PK_END; break;
5910 case PK_KP2: keysym = PK_DOWN; break;
5911 case PK_KP3: keysym = PK_PAGEDOWN; break;
5912 case PK_KP4: keysym = PK_LEFT; break;
5913 case PK_KP5: keysym = PK_REST; break;
5914 case PK_KP6: keysym = PK_RIGHT; break;
5915 case PK_KP7: keysym = PK_HOME; break;
5916 case PK_KP8: keysym = PK_UP; break;
5917 case PK_KP9: keysym = PK_PAGEUP; break;
5918 default: break; /* else gcc warns `enum value not used' */
5923 /* Miscellaneous keys */
5930 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5931 else if (modifiers == PKM_SHIFT)
5932 /* We do the opposite of what is configured */
5933 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5939 else if (modifiers == PKM_SHIFT)
5940 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5943 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5945 if (modifiers == PKM_CONTROL)
5950 case PK_KPENTER: /* Odd keypad modes handled above */
5951 if (modifiers == 0) {
5953 if (term->cr_lf_return)
5957 default: break; /* else gcc warns `enum value not used' */
5960 /* SCO function keys and editing keys */
5961 if (term->cfg.funky_type == FUNKY_SCO) {
5962 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
5963 static char const codes[] =
5964 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
5965 int index = keysym - PK_F1;
5967 if (modifiers & PKM_SHIFT) index += 12;
5968 if (modifiers & PKM_CONTROL) index += 24;
5969 p += sprintf((char *) p, "\x1B[%c", codes[index]);
5972 if (PK_ISEDITING(keysym)) {
5976 case PK_DELETE: *p++ = 0x7f; goto done;
5977 case PK_HOME: xkey = 'H'; break;
5978 case PK_INSERT: xkey = 'L'; break;
5979 case PK_END: xkey = 'F'; break;
5980 case PK_PAGEUP: xkey = 'I'; break;
5981 case PK_PAGEDOWN: xkey = 'G'; break;
5982 default: break; /* else gcc warns `enum value not used' */
5984 p += sprintf((char *) p, "\x1B[%c", xkey);
5988 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
5991 if (term->cfg.funky_type == FUNKY_XTERM) {
5992 /* Xterm shuffles these keys, apparently. */
5994 case PK_HOME: keysym = PK_INSERT; break;
5995 case PK_INSERT: keysym = PK_HOME; break;
5996 case PK_DELETE: keysym = PK_END; break;
5997 case PK_END: keysym = PK_PAGEUP; break;
5998 case PK_PAGEUP: keysym = PK_DELETE; break;
5999 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
6000 default: break; /* else gcc warns `enum value not used' */
6005 if (term->cfg.rxvt_homeend &&
6006 (keysym == PK_HOME || keysym == PK_END)) {
6007 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
6011 if (term->vt52_mode) {
6015 * A real VT52 doesn't have these, and a VT220 doesn't
6016 * send anything for them in VT52 mode.
6019 case PK_HOME: xkey = 'H'; break;
6020 case PK_INSERT: xkey = 'L'; break;
6021 case PK_DELETE: xkey = 'M'; break;
6022 case PK_END: xkey = 'E'; break;
6023 case PK_PAGEUP: xkey = 'I'; break;
6024 case PK_PAGEDOWN: xkey = 'G'; break;
6025 default: xkey=0; break; /* else gcc warns `enum value not used'*/
6027 p += sprintf((char *) p, "\x1B%c", xkey);
6032 case PK_HOME: code = 1; break;
6033 case PK_INSERT: code = 2; break;
6034 case PK_DELETE: code = 3; break;
6035 case PK_END: code = 4; break;
6036 case PK_PAGEUP: code = 5; break;
6037 case PK_PAGEDOWN: code = 6; break;
6038 default: code = 0; break; /* else gcc warns `enum value not used' */
6040 p += sprintf((char *) p, "\x1B[%d~", code);
6044 if (PK_ISFKEY(keysym)) {
6045 /* Map Shift+F1-F10 to F11-F20 */
6046 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
6048 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
6050 /* XXX This overrides the XTERM/VT52 mode below */
6052 if (keysym >= PK_F6) offt++;
6053 if (keysym >= PK_F12) offt++;
6054 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6055 'P' + keysym - PK_F1 - offt);
6058 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6059 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6062 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6063 if (term->vt52_mode)
6064 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6066 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6069 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6073 if (PK_ISCURSOR(keysym)) {
6077 case PK_UP: xkey = 'A'; break;
6078 case PK_DOWN: xkey = 'B'; break;
6079 case PK_RIGHT: xkey = 'C'; break;
6080 case PK_LEFT: xkey = 'D'; break;
6081 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6082 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6084 if (term->vt52_mode)
6085 p += sprintf((char *) p, "\x1B%c", xkey);
6087 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
6089 /* Useful mapping of Ctrl-arrows */
6090 if (modifiers == PKM_CONTROL)
6094 p += sprintf((char *) p, "\x1BO%c", xkey);
6096 p += sprintf((char *) p, "\x1B[%c", xkey);
6102 if (p > output || tlen > 0) {
6104 * Interrupt an ongoing paste. I'm not sure
6105 * this is sensible, but for the moment it's
6106 * preferable to having to faff about buffering
6112 * We need not bother about stdin backlogs
6113 * here, because in GUI PuTTY we can't do
6114 * anything about it anyway; there's no means
6115 * of asking Windows to hold off on KEYDOWN
6116 * messages. We _have_ to buffer everything
6119 term_seen_key_event(term);
6123 fprintf(stderr, "sending ESC\n");
6125 ldisc_send(term->ldisc, "\x1b", 1, 1);
6130 fprintf(stderr, "sending %d bytes:", p - output);
6131 for (i = 0; i < p - output; i++)
6132 fprintf(stderr, " %02x", output[i]);
6133 fprintf(stderr, "\n");
6135 ldisc_send(term->ldisc, output, p - output, 1);
6136 } else if (tlen > 0) {
6138 fprintf(stderr, "sending %d unichars:", tlen);
6139 for (i = 0; i < tlen; i++)
6140 fprintf(stderr, " %04x", (unsigned) text[i]);
6141 fprintf(stderr, "\n");
6143 luni_send(term->ldisc, text, tlen, 1);
6148 void term_nopaste(Terminal *term)
6150 if (term->paste_len == 0)
6152 sfree(term->paste_buffer);
6153 term->paste_buffer = NULL;
6154 term->paste_len = 0;
6157 int term_paste_pending(Terminal *term)
6159 return term->paste_len != 0;
6162 void term_paste(Terminal *term)
6164 long now, paste_diff;
6166 if (term->paste_len == 0)
6169 /* Don't wait forever to paste */
6170 if (term->paste_hold) {
6171 now = GETTICKCOUNT();
6172 paste_diff = now - term->last_paste;
6173 if (paste_diff >= 0 && paste_diff < 450)
6176 term->paste_hold = 0;
6178 while (term->paste_pos < term->paste_len) {
6180 while (n + term->paste_pos < term->paste_len) {
6181 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6185 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6186 term->paste_pos += n;
6188 if (term->paste_pos < term->paste_len) {
6189 term->paste_hold = 1;
6193 sfree(term->paste_buffer);
6194 term->paste_buffer = NULL;
6195 term->paste_len = 0;
6198 static void deselect(Terminal *term)
6200 term->selstate = NO_SELECTION;
6201 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6204 void term_deselect(Terminal *term)
6210 int term_ldisc(Terminal *term, int option)
6212 if (option == LD_ECHO)
6213 return term->term_echoing;
6214 if (option == LD_EDIT)
6215 return term->term_editing;
6219 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6221 bufchain_add(&term->inbuf, data, len);
6223 if (!term->in_term_out) {
6224 term->in_term_out = TRUE;
6225 term_reset_cblink(term);
6227 * During drag-selects, we do not process terminal input,
6228 * because the user will want the screen to hold still to
6231 if (term->selstate != DRAGGING)
6233 term->in_term_out = FALSE;
6237 * term_out() always completely empties inbuf. Therefore,
6238 * there's no reason at all to return anything other than zero
6239 * from this function, because there _can't_ be a question of
6240 * the remote side needing to wait until term_out() has cleared
6243 * This is a slightly suboptimal way to deal with SSH-2 - in
6244 * principle, the window mechanism would allow us to continue
6245 * to accept data on forwarded ports and X connections even
6246 * while the terminal processing was going slowly - but we
6247 * can't do the 100% right thing without moving the terminal
6248 * processing into a separate thread, and that might hurt
6249 * portability. So we manage stdout buffering the old SSH-1 way:
6250 * if the terminal processing goes slowly, the whole SSH
6251 * connection stops accepting data until it's ready.
6253 * In practice, I can't imagine this causing serious trouble.
6258 void term_provide_logctx(Terminal *term, void *logctx)
6260 term->logctx = logctx;
6263 void term_set_focus(Terminal *term, int has_focus)
6265 term->has_focus = has_focus;
6266 term_schedule_cblink(term);
6270 * Provide "auto" settings for remote tty modes, suitable for an
6271 * application with a terminal window.
6273 char *term_get_ttymode(Terminal *term, const char *mode)
6276 if (strcmp(mode, "ERASE") == 0) {
6277 val = term->cfg.bksp_is_delete ? "^?" : "^H";
6279 /* FIXME: perhaps we should set ONLCR based on cfg.lfhascr as well? */