14 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
15 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
16 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
17 #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
19 /* Product-order comparisons for rectangular block selection. */
20 #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
21 #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
23 #define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
24 #define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
28 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
29 #define CL_VT100 0x0002 /* VT100 */
30 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
31 #define CL_VT102 0x0008 /* VT102 */
32 #define CL_VT220 0x0010 /* VT220 */
33 #define CL_VT320 0x0020 /* VT320 */
34 #define CL_VT420 0x0040 /* VT420 */
35 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
36 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
37 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
38 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
39 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
41 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
42 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
43 #define TM_VT102 (TM_VT100AVO|CL_VT102)
44 #define TM_VT220 (TM_VT102|CL_VT220)
45 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
46 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
48 #define TM_PUTTY (0xFFFF)
50 #define UPDATE_DELAY ((TICKSPERSEC+49)/50)/* ticks to defer window update */
51 #define TBLINK_DELAY ((TICKSPERSEC*9+19)/20)/* ticks between text blinks*/
52 #define CBLINK_DELAY (CURSORBLINK) /* ticks between cursor blinks */
53 #define VBELL_DELAY (VBELL_TIMEOUT) /* visual bell timeout in ticks */
55 #define compatibility(x) \
56 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
57 term->termstate=TOPLEVEL; \
60 #define compatibility2(x,y) \
61 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
62 term->termstate=TOPLEVEL; \
66 #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
68 char *EMPTY_WINDOW_TITLE = "";
70 const char sco2ansicolour[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
72 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
73 const wchar_t sel_nl[] = SEL_NL;
76 * Fetch the character at a particular position in a line array,
77 * for purposes of `wordtype'. The reason this isn't just a simple
78 * array reference is that if the character we find is UCSWIDE,
79 * then we must look one space further to the left.
81 #define UCSGET(a, x) \
82 ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr )
85 * Detect the various aliases of U+0020 SPACE.
87 #define IS_SPACE_CHR(chr) \
88 ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20))
93 #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0)
96 * Internal prototypes.
98 static void resizeline(Terminal *, termline *, int);
99 static termline *lineptr(Terminal *, int, int, int);
100 static void unlineptr(termline *);
101 static void check_line_size(Terminal *, termline *);
102 static void do_paint(Terminal *, Context, int);
103 static void erase_lots(Terminal *, int, int, int);
104 static int find_last_nonempty_line(Terminal *, tree234 *);
105 static void swap_screen(Terminal *, int, int, int);
106 static void update_sbar(Terminal *);
107 static void deselect(Terminal *);
108 static void term_print_finish(Terminal *);
109 static void scroll(Terminal *, int, int, int, int);
110 #ifdef OPTIMISE_SCROLL
111 static void scroll_display(Terminal *, int, int, int);
112 #endif /* OPTIMISE_SCROLL */
114 static termline *newline(Terminal *term, int cols, int bce)
119 line = snew(termline);
120 line->chars = snewn(cols, termchar);
121 for (j = 0; j < cols; j++)
122 line->chars[j] = (bce ? term->erase_char : term->basic_erase_char);
123 line->cols = line->size = cols;
124 line->lattr = LATTR_NORM;
125 line->temporary = FALSE;
131 static void freeline(termline *line)
139 static void unlineptr(termline *line)
147 * Diagnostic function: verify that a termline has a correct
148 * combining character structure.
150 * This is a performance-intensive check, so it's no longer enabled
153 static void cc_check(termline *line)
155 unsigned char *flags;
158 assert(line->size >= line->cols);
160 flags = snewn(line->size, unsigned char);
162 for (i = 0; i < line->size; i++)
163 flags[i] = (i < line->cols);
165 for (i = 0; i < line->cols; i++) {
167 while (line->chars[j].cc_next) {
168 j += line->chars[j].cc_next;
169 assert(j >= line->cols && j < line->size);
178 assert(j >= line->cols && j < line->size);
181 if (line->chars[j].cc_next)
182 j += line->chars[j].cc_next;
189 for (i = 0; i < line->size; i++)
190 j += (flags[i] != 0);
192 assert(j == line->size);
199 * Add a combining character to a character cell.
201 static void add_cc(termline *line, int col, unsigned long chr)
205 assert(col >= 0 && col < line->cols);
208 * Start by extending the cols array if the free list is empty.
210 if (!line->cc_free) {
212 line->size += 16 + (line->size - line->cols) / 2;
213 line->chars = sresize(line->chars, line->size, termchar);
215 while (n < line->size) {
216 if (n+1 < line->size)
217 line->chars[n].cc_next = 1;
219 line->chars[n].cc_next = 0;
225 * Now walk the cc list of the cell in question.
227 while (line->chars[col].cc_next)
228 col += line->chars[col].cc_next;
231 * `col' now points at the last cc currently in this cell; so
232 * we simply add another one.
234 newcc = line->cc_free;
235 if (line->chars[newcc].cc_next)
236 line->cc_free = newcc + line->chars[newcc].cc_next;
239 line->chars[newcc].cc_next = 0;
240 line->chars[newcc].chr = chr;
241 line->chars[col].cc_next = newcc - col;
249 * Clear the combining character list in a character cell.
251 static void clear_cc(termline *line, int col)
253 int oldfree, origcol = col;
255 assert(col >= 0 && col < line->cols);
257 if (!line->chars[col].cc_next)
258 return; /* nothing needs doing */
260 oldfree = line->cc_free;
261 line->cc_free = col + line->chars[col].cc_next;
262 while (line->chars[col].cc_next)
263 col += line->chars[col].cc_next;
265 line->chars[col].cc_next = oldfree - col;
267 line->chars[col].cc_next = 0;
269 line->chars[origcol].cc_next = 0;
277 * Compare two character cells for equality. Special case required
278 * in do_paint() where we override what we expect the chr and attr
281 static int termchars_equal_override(termchar *a, termchar *b,
282 unsigned long bchr, unsigned long battr)
287 if ((a->attr &~ DATTR_MASK) != (battr &~ DATTR_MASK))
289 while (a->cc_next || b->cc_next) {
290 if (!a->cc_next || !b->cc_next)
291 return FALSE; /* one cc-list ends, other does not */
294 if (a->chr != b->chr)
300 static int termchars_equal(termchar *a, termchar *b)
302 return termchars_equal_override(a, b, b->chr, b->attr);
306 * Copy a character cell. (Requires a pointer to the destination
307 * termline, so as to access its free list.)
309 static void copy_termchar(termline *destline, int x, termchar *src)
311 clear_cc(destline, x);
313 destline->chars[x] = *src; /* copy everything except cc-list */
314 destline->chars[x].cc_next = 0; /* and make sure this is zero */
316 while (src->cc_next) {
318 add_cc(destline, x, src->chr);
327 * Move a character cell within its termline.
329 static void move_termchar(termline *line, termchar *dest, termchar *src)
331 /* First clear the cc list from the original char, just in case. */
332 clear_cc(line, dest - line->chars);
334 /* Move the character cell and adjust its cc_next. */
335 *dest = *src; /* copy everything except cc-list */
337 dest->cc_next = src->cc_next - (dest-src);
339 /* Ensure the original cell doesn't have a cc list. */
348 * Compress and decompress a termline into an RLE-based format for
349 * storing in scrollback. (Since scrollback almost never needs to
350 * be modified and exists in huge quantities, this is a sensible
351 * tradeoff, particularly since it allows us to continue adding
352 * features to the main termchar structure without proportionally
353 * bloating the terminal emulator's memory footprint unless those
354 * features are in constant use.)
360 static void add(struct buf *b, unsigned char c)
362 if (b->len >= b->size) {
363 b->size = (b->len * 3 / 2) + 512;
364 b->data = sresize(b->data, b->size, unsigned char);
366 b->data[b->len++] = c;
368 static int get(struct buf *b)
370 return b->data[b->len++];
372 static void makerle(struct buf *b, termline *ldata,
373 void (*makeliteral)(struct buf *b, termchar *c,
374 unsigned long *state))
376 int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2;
377 termchar *c = ldata->chars;
378 unsigned long state = 0, oldstate;
385 prevlen = prevpos = 0;
390 makeliteral(b, c++, &state);
391 thislen = b->len - thispos;
392 if (thislen == prevlen &&
393 !memcmp(b->data + prevpos, b->data + thispos, thislen)) {
395 * This literal precisely matches the previous one.
396 * Turn it into a run if it's worthwhile.
398 * With one-byte literals, it costs us two bytes to
399 * encode a run, plus another byte to write the header
400 * to resume normal output; so a three-element run is
401 * neutral, and anything beyond that is unconditionally
402 * worthwhile. With two-byte literals or more, even a
405 if (thislen > 1 || prev2) {
409 * It's worth encoding a run. Start at prevpos,
410 * unless hdrsize==0 in which case we can back up
411 * another one and start by overwriting hdrpos.
414 hdrsize--; /* remove the literal at prevpos */
418 prevpos -= prevlen;/* and possibly another one */
422 assert(prevpos == hdrpos + 1);
424 b->len = prevpos+prevlen;
426 memmove(b->data + prevpos+1, b->data + prevpos, prevlen);
428 b->len = prevpos+prevlen+1;
430 * Terminate the previous run of ordinary
433 assert(hdrsize >= 1 && hdrsize <= 128);
434 b->data[hdrpos] = hdrsize - 1;
437 runlen = prev2 ? 3 : 2;
439 while (n > 0 && runlen < 129) {
443 makeliteral(b, c, &state);
444 tmplen = b->len - tmppos;
446 if (tmplen != thislen ||
447 memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) {
449 break; /* run over */
454 assert(runlen >= 2 && runlen <= 129);
455 b->data[runpos] = runlen + 0x80 - 2;
460 /* And ensure this run doesn't interfere with the next. */
461 prevlen = prevpos = 0;
467 * Just flag that the previous two literals were
468 * identical, in case we find a third identical one
469 * we want to turn into a run.
482 * This character isn't (yet) part of a run. Add it to
486 if (hdrsize == 128) {
487 b->data[hdrpos] = hdrsize - 1;
491 prevlen = prevpos = 0;
500 assert(hdrsize <= 128);
501 b->data[hdrpos] = hdrsize - 1;
506 static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state)
509 * My encoding for characters is UTF-8-like, in that it stores
510 * 7-bit ASCII in one byte and uses high-bit-set bytes as
511 * introducers to indicate a longer sequence. However, it's
512 * unlike UTF-8 in that it doesn't need to be able to
513 * resynchronise, and therefore I don't want to waste two bits
514 * per byte on having recognisable continuation characters.
515 * Also I don't want to rule out the possibility that I may one
516 * day use values 0x80000000-0xFFFFFFFF for interesting
517 * purposes, so unlike UTF-8 I need a full 32-bit range.
518 * Accordingly, here is my encoding:
520 * 00000000-0000007F: 0xxxxxxx (but see below)
521 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
522 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
523 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
524 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
526 * (`Z' is like `x' but is always going to be zero since the
527 * values I'm encoding don't go above 2^32. In principle the
528 * five-byte form of the encoding could extend to 2^35, and
529 * there could be six-, seven-, eight- and nine-byte forms as
530 * well to allow up to 64-bit values to be encoded. But that's
531 * completely unnecessary for these purposes!)
533 * The encoding as written above would be very simple, except
534 * that 7-bit ASCII can occur in several different ways in the
535 * terminal data; sometimes it crops up in the D800 page
536 * (CSET_ASCII) but at other times it's in the 0000 page (real
537 * Unicode). Therefore, this encoding is actually _stateful_:
538 * the one-byte encoding of 00-7F actually indicates `reuse the
539 * upper three bytes of the last character', and to encode an
540 * absolute value of 00-7F you need to use the two-byte form
543 if ((c->chr & ~0x7F) == *state) {
544 add(b, (unsigned char)(c->chr & 0x7F));
545 } else if (c->chr < 0x4000) {
546 add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80));
547 add(b, (unsigned char)(c->chr & 0xFF));
548 } else if (c->chr < 0x200000) {
549 add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0));
550 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
551 add(b, (unsigned char)(c->chr & 0xFF));
552 } else if (c->chr < 0x10000000) {
553 add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0));
554 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
555 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
556 add(b, (unsigned char)(c->chr & 0xFF));
559 add(b, (unsigned char)((c->chr >> 24) & 0xFF));
560 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
561 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
562 add(b, (unsigned char)(c->chr & 0xFF));
564 *state = c->chr & ~0xFF;
566 static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state)
569 * My encoding for attributes is 16-bit-granular and assumes
570 * that the top bit of the word is never required. I either
571 * store a two-byte value with the top bit clear (indicating
572 * just that value), or a four-byte value with the top bit set
573 * (indicating the same value with its top bit clear).
575 * However, first I permute the bits of the attribute value, so
576 * that the eight bits of colour (four in each of fg and bg)
577 * which are never non-zero unless xterm 256-colour mode is in
578 * use are placed higher up the word than everything else. This
579 * ensures that attribute values remain 16-bit _unless_ the
580 * user uses extended colour.
582 unsigned attr, colourbits;
586 assert(ATTR_BGSHIFT > ATTR_FGSHIFT);
588 colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF;
590 colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF;
592 attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) |
593 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
594 attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) |
595 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
597 attr |= (colourbits << (32-9));
600 add(b, (unsigned char)((attr >> 8) & 0xFF));
601 add(b, (unsigned char)(attr & 0xFF));
603 add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80));
604 add(b, (unsigned char)((attr >> 16) & 0xFF));
605 add(b, (unsigned char)((attr >> 8) & 0xFF));
606 add(b, (unsigned char)(attr & 0xFF));
609 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
612 * For combining characters, I just encode a bunch of ordinary
613 * chars using makeliteral_chr, and terminate with a \0
614 * character (which I know won't come up as a combining char
617 * I don't use the stateful encoding in makeliteral_chr.
619 unsigned long zstate;
628 makeliteral_chr(b, c, &zstate);
633 makeliteral_chr(b, &z, &zstate);
636 static termline *decompressline(unsigned char *data, int *bytes_used);
638 static unsigned char *compressline(termline *ldata)
640 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
643 * First, store the column count, 7 bits at a time, least
644 * significant `digit' first, with the high bit set on all but
650 add(b, (unsigned char)((n & 0x7F) | 0x80));
653 add(b, (unsigned char)(n));
657 * Next store the lattrs; same principle.
660 int n = ldata->lattr;
662 add(b, (unsigned char)((n & 0x7F) | 0x80));
665 add(b, (unsigned char)(n));
669 * Now we store a sequence of separate run-length encoded
670 * fragments, each containing exactly as many symbols as there
671 * are columns in the ldata.
673 * All of these have a common basic format:
675 * - a byte 00-7F indicates that X+1 literals follow it
676 * - a byte 80-FF indicates that a single literal follows it
677 * and expects to be repeated (X-0x80)+2 times.
679 * The format of the `literals' varies between the fragments.
681 makerle(b, ldata, makeliteral_chr);
682 makerle(b, ldata, makeliteral_attr);
683 makerle(b, ldata, makeliteral_cc);
686 * Diagnostics: ensure that the compressed data really does
687 * decompress to the right thing.
689 * This is a bit performance-heavy for production code.
692 #ifndef CHECK_SB_COMPRESSION
698 #ifdef DIAGNOSTIC_SB_COMPRESSION
699 for (i = 0; i < b->len; i++) {
700 printf(" %02x ", b->data[i]);
705 dcl = decompressline(b->data, &dused);
706 assert(b->len == dused);
707 assert(ldata->cols == dcl->cols);
708 assert(ldata->lattr == dcl->lattr);
709 for (i = 0; i < ldata->cols; i++)
710 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
712 #ifdef DIAGNOSTIC_SB_COMPRESSION
713 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
714 ldata->cols, 4 * ldata->cols, dused,
715 (double)dused / (4 * ldata->cols));
721 #endif /* TERM_CC_DIAGS */
724 * Trim the allocated memory so we don't waste any, and return.
726 return sresize(b->data, b->len, unsigned char);
729 static void readrle(struct buf *b, termline *ldata,
730 void (*readliteral)(struct buf *b, termchar *c,
731 termline *ldata, unsigned long *state))
734 unsigned long state = 0;
736 while (n < ldata->cols) {
742 int pos = b->len, count = hdr + 2 - 0x80;
744 assert(n < ldata->cols);
746 readliteral(b, ldata->chars + n, ldata, &state);
750 /* Just a sequence of consecutive literals. */
754 assert(n < ldata->cols);
755 readliteral(b, ldata->chars + n, ldata, &state);
761 assert(n == ldata->cols);
763 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
764 unsigned long *state)
769 * 00000000-0000007F: 0xxxxxxx
770 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
771 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
772 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
773 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
778 c->chr = byte | *state;
779 } else if (byte < 0xC0) {
780 c->chr = (byte &~ 0xC0) << 8;
782 } else if (byte < 0xE0) {
783 c->chr = (byte &~ 0xE0) << 16;
784 c->chr |= get(b) << 8;
786 } else if (byte < 0xF0) {
787 c->chr = (byte &~ 0xF0) << 24;
788 c->chr |= get(b) << 16;
789 c->chr |= get(b) << 8;
792 assert(byte == 0xF0);
793 c->chr = get(b) << 24;
794 c->chr |= get(b) << 16;
795 c->chr |= get(b) << 8;
798 *state = c->chr & ~0xFF;
800 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
801 unsigned long *state)
803 unsigned val, attr, colourbits;
815 colourbits = (val >> (32-9)) & 0xFF;
816 attr = (val & ((1<<(32-9))-1));
818 attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) |
819 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
820 attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) |
821 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
823 attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4);
824 attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4);
828 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
829 unsigned long *state)
832 unsigned long zstate;
833 int x = c - ldata->chars;
839 readliteral_chr(b, &n, ldata, &zstate);
842 add_cc(ldata, x, n.chr);
846 static termline *decompressline(unsigned char *data, int *bytes_used)
848 int ncols, byte, shift;
849 struct buf buffer, *b = &buffer;
856 * First read in the column count.
861 ncols |= (byte & 0x7F) << shift;
863 } while (byte & 0x80);
866 * Now create the output termline.
868 ldata = snew(termline);
869 ldata->chars = snewn(ncols, termchar);
870 ldata->cols = ldata->size = ncols;
871 ldata->temporary = TRUE;
875 * We must set all the cc pointers in ldata->chars to 0 right
876 * now, so that cc diagnostics that verify the integrity of the
877 * whole line will make sense while we're in the middle of
882 for (i = 0; i < ldata->cols; i++)
883 ldata->chars[i].cc_next = 0;
887 * Now read in the lattr.
889 ldata->lattr = shift = 0;
892 ldata->lattr |= (byte & 0x7F) << shift;
894 } while (byte & 0x80);
897 * Now we read in each of the RLE streams in turn.
899 readrle(b, ldata, readliteral_chr);
900 readrle(b, ldata, readliteral_attr);
901 readrle(b, ldata, readliteral_cc);
903 /* Return the number of bytes read, for diagnostic purposes. */
905 *bytes_used = b->len;
911 * Resize a line to make it `cols' columns wide.
913 static void resizeline(Terminal *term, termline *line, int cols)
917 if (line->cols != cols) {
919 oldcols = line->cols;
922 * This line is the wrong length, which probably means it
923 * hasn't been accessed since a resize. Resize it now.
925 * First, go through all the characters that will be thrown
926 * out in the resize (if we're shrinking the line) and
927 * return their cc lists to the cc free list.
929 for (i = cols; i < oldcols; i++)
933 * If we're shrinking the line, we now bodily move the
934 * entire cc section from where it started to where it now
935 * needs to be. (We have to do this before the resize, so
936 * that the data we're copying is still there. However, if
937 * we're expanding, we have to wait until _after_ the
938 * resize so that the space we're copying into is there.)
941 memmove(line->chars + cols, line->chars + oldcols,
942 (line->size - line->cols) * TSIZE);
945 * Now do the actual resize, leaving the _same_ amount of
946 * cc space as there was to begin with.
948 line->size += cols - oldcols;
949 line->chars = sresize(line->chars, line->size, TTYPE);
953 * If we're expanding the line, _now_ we move the cc
957 memmove(line->chars + cols, line->chars + oldcols,
958 (line->size - line->cols) * TSIZE);
961 * Go through what's left of the original line, and adjust
962 * the first cc_next pointer in each list. (All the
963 * subsequent ones are still valid because they are
964 * relative offsets within the cc block.) Also do the same
965 * to the head of the cc_free list.
967 for (i = 0; i < oldcols && i < cols; i++)
968 if (line->chars[i].cc_next)
969 line->chars[i].cc_next += cols - oldcols;
971 line->cc_free += cols - oldcols;
974 * And finally fill in the new space with erase chars. (We
975 * don't have to worry about cc lists here, because we
976 * _know_ the erase char doesn't have one.)
978 for (i = oldcols; i < cols; i++)
979 line->chars[i] = term->basic_erase_char;
988 * Get the number of lines in the scrollback.
990 static int sblines(Terminal *term)
992 int sblines = count234(term->scrollback);
993 if (term->erase_to_scrollback &&
994 term->alt_which && term->alt_screen) {
995 sblines += term->alt_sblines;
1001 * Retrieve a line of the screen or of the scrollback, according to
1002 * whether the y coordinate is non-negative or negative
1005 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
1012 whichtree = term->screen;
1019 if (term->erase_to_scrollback &&
1020 term->alt_which && term->alt_screen) {
1021 altlines = term->alt_sblines;
1023 if (y < -altlines) {
1024 whichtree = term->scrollback;
1025 treeindex = y + altlines + count234(term->scrollback);
1027 whichtree = term->alt_screen;
1028 treeindex = y + term->alt_sblines;
1029 /* treeindex = y + count234(term->alt_screen); */
1032 if (whichtree == term->scrollback) {
1033 unsigned char *cline = index234(whichtree, treeindex);
1034 line = decompressline(cline, NULL);
1036 line = index234(whichtree, treeindex);
1039 /* We assume that we don't screw up and retrieve something out of range. */
1041 fatalbox("line==NULL in terminal.c\n"
1042 "lineno=%d y=%d w=%d h=%d\n"
1043 "count(scrollback=%p)=%d\n"
1044 "count(screen=%p)=%d\n"
1045 "count(alt=%p)=%d alt_sblines=%d\n"
1046 "whichtree=%p treeindex=%d\n\n"
1047 "Please contact <putty@projects.tartarus.org> "
1048 "and pass on the above information.",
1049 lineno, y, term->cols, term->rows,
1050 term->scrollback, count234(term->scrollback),
1051 term->screen, count234(term->screen),
1052 term->alt_screen, count234(term->alt_screen), term->alt_sblines,
1053 whichtree, treeindex);
1055 assert(line != NULL);
1058 * Here we resize lines to _at least_ the right length, but we
1059 * don't truncate them. Truncation is done as a side effect of
1060 * modifying the line.
1062 * The point of this policy is to try to arrange that resizing the
1063 * terminal window repeatedly - e.g. successive steps in an X11
1064 * opaque window-resize drag, or resizing as a side effect of
1065 * retiling by tiling WMs such as xmonad - does not throw away
1066 * data gratuitously. Specifically, we want a sequence of resize
1067 * operations with no terminal output between them to have the
1068 * same effect as a single resize to the ultimate terminal size,
1069 * and also (for the case in which xmonad narrows a window that's
1070 * scrolling things) we want scrolling up new text at the bottom
1071 * of a narrowed window to avoid truncating lines further up when
1072 * the window is re-widened.
1074 if (term->cols > line->cols)
1075 resizeline(term, line, term->cols);
1080 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1081 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1084 * Coerce a termline to the terminal's current width. Unlike the
1085 * optional resize in lineptr() above, this is potentially destructive
1086 * of text, since it can shrink as well as grow the line.
1088 * We call this whenever a termline is actually going to be modified.
1089 * Helpfully, putting a single call to this function in check_boundary
1090 * deals with _nearly_ all such cases, leaving only a few things like
1091 * bulk erase and ESC#8 to handle separately.
1093 static void check_line_size(Terminal *term, termline *line)
1095 if (term->cols != line->cols) /* trivial optimisation */
1096 resizeline(term, line, term->cols);
1099 static void term_schedule_tblink(Terminal *term);
1100 static void term_schedule_cblink(Terminal *term);
1102 static void term_timer(void *ctx, unsigned long now)
1104 Terminal *term = (Terminal *)ctx;
1107 if (term->tblink_pending && now == term->next_tblink) {
1108 term->tblinker = !term->tblinker;
1109 term->tblink_pending = FALSE;
1110 term_schedule_tblink(term);
1114 if (term->cblink_pending && now == term->next_cblink) {
1115 term->cblinker = !term->cblinker;
1116 term->cblink_pending = FALSE;
1117 term_schedule_cblink(term);
1121 if (term->in_vbell && now == term->vbell_end) {
1122 term->in_vbell = FALSE;
1127 (term->window_update_pending && now == term->next_update))
1131 static void term_schedule_update(Terminal *term)
1133 if (!term->window_update_pending) {
1134 term->window_update_pending = TRUE;
1135 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1140 * Call this whenever the terminal window state changes, to queue
1143 static void seen_disp_event(Terminal *term)
1145 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1146 term_schedule_update(term);
1150 * Call when the terminal's blinking-text settings change, or when
1151 * a text blink has just occurred.
1153 static void term_schedule_tblink(Terminal *term)
1155 if (term->blink_is_real) {
1156 if (!term->tblink_pending)
1157 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1158 term->tblink_pending = TRUE;
1160 term->tblinker = 1; /* reset when not in use */
1161 term->tblink_pending = FALSE;
1166 * Likewise with cursor blinks.
1168 static void term_schedule_cblink(Terminal *term)
1170 if (term->blink_cur && term->has_focus) {
1171 if (!term->cblink_pending)
1172 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1173 term->cblink_pending = TRUE;
1175 term->cblinker = 1; /* reset when not in use */
1176 term->cblink_pending = FALSE;
1181 * Call to reset cursor blinking on new output.
1183 static void term_reset_cblink(Terminal *term)
1185 seen_disp_event(term);
1187 term->cblink_pending = FALSE;
1188 term_schedule_cblink(term);
1192 * Call to begin a visual bell.
1194 static void term_schedule_vbell(Terminal *term, int already_started,
1197 long ticks_already_gone;
1199 if (already_started)
1200 ticks_already_gone = GETTICKCOUNT() - startpoint;
1202 ticks_already_gone = 0;
1204 if (ticks_already_gone < VBELL_DELAY) {
1205 term->in_vbell = TRUE;
1206 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1209 term->in_vbell = FALSE;
1214 * Set up power-on settings for the terminal.
1215 * If 'clear' is false, don't actually clear the primary screen, and
1216 * position the cursor below the last non-blank line (scrolling if
1219 static void power_on(Terminal *term, int clear)
1221 term->alt_x = term->alt_y = 0;
1222 term->savecurs.x = term->savecurs.y = 0;
1223 term->alt_savecurs.x = term->alt_savecurs.y = 0;
1224 term->alt_t = term->marg_t = 0;
1225 if (term->rows != -1)
1226 term->alt_b = term->marg_b = term->rows - 1;
1228 term->alt_b = term->marg_b = 0;
1229 if (term->cols != -1) {
1231 for (i = 0; i < term->cols; i++)
1232 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1234 term->alt_om = term->dec_om = conf_get_int(term->conf, CONF_dec_om);
1235 term->alt_ins = term->insert = FALSE;
1236 term->alt_wnext = term->wrapnext =
1237 term->save_wnext = term->alt_save_wnext = FALSE;
1238 term->alt_wrap = term->wrap = conf_get_int(term->conf, CONF_wrap_mode);
1239 term->alt_cset = term->cset = term->save_cset = term->alt_save_cset = 0;
1240 term->alt_utf = term->utf = term->save_utf = term->alt_save_utf = 0;
1241 term->utf_state = 0;
1242 term->alt_sco_acs = term->sco_acs =
1243 term->save_sco_acs = term->alt_save_sco_acs = 0;
1244 term->cset_attr[0] = term->cset_attr[1] =
1245 term->save_csattr = term->alt_save_csattr = CSET_ASCII;
1247 term->in_vbell = FALSE;
1248 term->cursor_on = 1;
1249 term->big_cursor = 0;
1250 term->default_attr = term->save_attr =
1251 term->alt_save_attr = term->curr_attr = ATTR_DEFAULT;
1252 term->term_editing = term->term_echoing = FALSE;
1253 term->app_cursor_keys = conf_get_int(term->conf, CONF_app_cursor);
1254 term->app_keypad_keys = conf_get_int(term->conf, CONF_app_keypad);
1255 term->use_bce = conf_get_int(term->conf, CONF_bce);
1256 term->blink_is_real = conf_get_int(term->conf, CONF_blinktext);
1257 term->erase_char = term->basic_erase_char;
1258 term->alt_which = 0;
1259 term_print_finish(term);
1260 term->xterm_mouse = 0;
1261 term->xterm_extended_mouse = 0;
1262 term->urxvt_extended_mouse = 0;
1263 set_raw_mouse_mode(term->frontend, FALSE);
1264 term->bracketed_paste = FALSE;
1267 for (i = 0; i < 256; i++)
1268 term->wordness[i] = conf_get_int_int(term->conf, CONF_wordness, i);
1271 swap_screen(term, 1, FALSE, FALSE);
1272 erase_lots(term, FALSE, TRUE, TRUE);
1273 swap_screen(term, 0, FALSE, FALSE);
1275 erase_lots(term, FALSE, TRUE, TRUE);
1276 term->curs.y = find_last_nonempty_line(term, term->screen) + 1;
1277 if (term->curs.y == term->rows) {
1279 scroll(term, 0, term->rows - 1, 1, TRUE);
1285 term_schedule_tblink(term);
1286 term_schedule_cblink(term);
1290 * Force a screen update.
1292 void term_update(Terminal *term)
1296 term->window_update_pending = FALSE;
1298 ctx = get_ctx(term->frontend);
1300 int need_sbar_update = term->seen_disp_event;
1301 if (term->seen_disp_event && term->scroll_on_disp) {
1302 term->disptop = 0; /* return to main screen */
1303 term->seen_disp_event = 0;
1304 need_sbar_update = TRUE;
1307 if (need_sbar_update)
1309 do_paint(term, ctx, TRUE);
1310 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1316 * Called from front end when a keypress occurs, to trigger
1317 * anything magical that needs to happen in that situation.
1319 void term_seen_key_event(Terminal *term)
1322 * On any keypress, clear the bell overload mechanism
1323 * completely, on the grounds that large numbers of
1324 * beeps coming from deliberate key action are likely
1325 * to be intended (e.g. beeps from filename completion
1326 * blocking repeatedly).
1328 term->beep_overloaded = FALSE;
1329 while (term->beephead) {
1330 struct beeptime *tmp = term->beephead;
1331 term->beephead = tmp->next;
1334 term->beeptail = NULL;
1338 * Reset the scrollback on keypress, if we're doing that.
1340 if (term->scroll_on_key) {
1341 term->disptop = 0; /* return to main screen */
1342 seen_disp_event(term);
1347 * Same as power_on(), but an external function.
1349 void term_pwron(Terminal *term, int clear)
1351 power_on(term, clear);
1352 if (term->ldisc) /* cause ldisc to notice changes */
1353 ldisc_send(term->ldisc, NULL, 0, 0);
1359 static void set_erase_char(Terminal *term)
1361 term->erase_char = term->basic_erase_char;
1363 term->erase_char.attr = (term->curr_attr &
1364 (ATTR_FGMASK | ATTR_BGMASK));
1368 * We copy a bunch of stuff out of the Conf structure into local
1369 * fields in the Terminal structure, to avoid the repeated tree234
1370 * lookups which would be involved in fetching them from the former
1373 void term_copy_stuff_from_conf(Terminal *term)
1375 term->ansi_colour = conf_get_int(term->conf, CONF_ansi_colour);
1376 term->arabicshaping = conf_get_int(term->conf, CONF_arabicshaping);
1377 term->beep = conf_get_int(term->conf, CONF_beep);
1378 term->bellovl = conf_get_int(term->conf, CONF_bellovl);
1379 term->bellovl_n = conf_get_int(term->conf, CONF_bellovl_n);
1380 term->bellovl_s = conf_get_int(term->conf, CONF_bellovl_s);
1381 term->bellovl_t = conf_get_int(term->conf, CONF_bellovl_t);
1382 term->bidi = conf_get_int(term->conf, CONF_bidi);
1383 term->bksp_is_delete = conf_get_int(term->conf, CONF_bksp_is_delete);
1384 term->blink_cur = conf_get_int(term->conf, CONF_blink_cur);
1385 term->blinktext = conf_get_int(term->conf, CONF_blinktext);
1386 term->cjk_ambig_wide = conf_get_int(term->conf, CONF_cjk_ambig_wide);
1387 term->conf_height = conf_get_int(term->conf, CONF_height);
1388 term->conf_width = conf_get_int(term->conf, CONF_width);
1389 term->crhaslf = conf_get_int(term->conf, CONF_crhaslf);
1390 term->erase_to_scrollback = conf_get_int(term->conf, CONF_erase_to_scrollback);
1391 term->funky_type = conf_get_int(term->conf, CONF_funky_type);
1392 term->lfhascr = conf_get_int(term->conf, CONF_lfhascr);
1393 term->logflush = conf_get_int(term->conf, CONF_logflush);
1394 term->logtype = conf_get_int(term->conf, CONF_logtype);
1395 term->mouse_override = conf_get_int(term->conf, CONF_mouse_override);
1396 term->nethack_keypad = conf_get_int(term->conf, CONF_nethack_keypad);
1397 term->no_alt_screen = conf_get_int(term->conf, CONF_no_alt_screen);
1398 term->no_applic_c = conf_get_int(term->conf, CONF_no_applic_c);
1399 term->no_applic_k = conf_get_int(term->conf, CONF_no_applic_k);
1400 term->no_dbackspace = conf_get_int(term->conf, CONF_no_dbackspace);
1401 term->no_mouse_rep = conf_get_int(term->conf, CONF_no_mouse_rep);
1402 term->no_remote_charset = conf_get_int(term->conf, CONF_no_remote_charset);
1403 term->no_remote_resize = conf_get_int(term->conf, CONF_no_remote_resize);
1404 term->no_remote_wintitle = conf_get_int(term->conf, CONF_no_remote_wintitle);
1405 term->rawcnp = conf_get_int(term->conf, CONF_rawcnp);
1406 term->rect_select = conf_get_int(term->conf, CONF_rect_select);
1407 term->remote_qtitle_action = conf_get_int(term->conf, CONF_remote_qtitle_action);
1408 term->rxvt_homeend = conf_get_int(term->conf, CONF_rxvt_homeend);
1409 term->scroll_on_disp = conf_get_int(term->conf, CONF_scroll_on_disp);
1410 term->scroll_on_key = conf_get_int(term->conf, CONF_scroll_on_key);
1411 term->xterm_256_colour = conf_get_int(term->conf, CONF_xterm_256_colour);
1414 * Parse the control-character escapes in the configured
1415 * answerback string.
1418 char *answerback = conf_get_str(term->conf, CONF_answerback);
1419 int maxlen = strlen(answerback);
1421 term->answerback = snewn(maxlen, char);
1422 term->answerbacklen = 0;
1424 while (*answerback) {
1426 char c = ctrlparse(answerback, &n);
1428 term->answerback[term->answerbacklen++] = c;
1431 term->answerback[term->answerbacklen++] = *answerback++;
1438 * When the user reconfigures us, we need to check the forbidden-
1439 * alternate-screen config option, disable raw mouse mode if the
1440 * user has disabled mouse reporting, and abandon a print job if
1441 * the user has disabled printing.
1443 void term_reconfig(Terminal *term, Conf *conf)
1446 * Before adopting the new config, check all those terminal
1447 * settings which control power-on defaults; and if they've
1448 * changed, we will modify the current state as well as the
1449 * default one. The full list is: Auto wrap mode, DEC Origin
1450 * Mode, BCE, blinking text, character classes.
1452 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1455 reset_wrap = (conf_get_int(term->conf, CONF_wrap_mode) !=
1456 conf_get_int(conf, CONF_wrap_mode));
1457 reset_decom = (conf_get_int(term->conf, CONF_dec_om) !=
1458 conf_get_int(conf, CONF_dec_om));
1459 reset_bce = (conf_get_int(term->conf, CONF_bce) !=
1460 conf_get_int(conf, CONF_bce));
1461 reset_tblink = (conf_get_int(term->conf, CONF_blinktext) !=
1462 conf_get_int(conf, CONF_blinktext));
1463 reset_charclass = 0;
1464 for (i = 0; i < 256; i++)
1465 if (conf_get_int_int(term->conf, CONF_wordness, i) !=
1466 conf_get_int_int(conf, CONF_wordness, i))
1467 reset_charclass = 1;
1470 * If the bidi or shaping settings have changed, flush the bidi
1473 if (conf_get_int(term->conf, CONF_arabicshaping) !=
1474 conf_get_int(conf, CONF_arabicshaping) ||
1475 conf_get_int(term->conf, CONF_bidi) !=
1476 conf_get_int(conf, CONF_bidi)) {
1477 for (i = 0; i < term->bidi_cache_size; i++) {
1478 sfree(term->pre_bidi_cache[i].chars);
1479 sfree(term->post_bidi_cache[i].chars);
1480 term->pre_bidi_cache[i].width = -1;
1481 term->pre_bidi_cache[i].chars = NULL;
1482 term->post_bidi_cache[i].width = -1;
1483 term->post_bidi_cache[i].chars = NULL;
1487 conf_free(term->conf);
1488 term->conf = conf_copy(conf);
1491 term->alt_wrap = term->wrap = conf_get_int(term->conf, CONF_wrap_mode);
1493 term->alt_om = term->dec_om = conf_get_int(term->conf, CONF_dec_om);
1495 term->use_bce = conf_get_int(term->conf, CONF_bce);
1496 set_erase_char(term);
1499 term->blink_is_real = conf_get_int(term->conf, CONF_blinktext);
1501 if (reset_charclass)
1502 for (i = 0; i < 256; i++)
1503 term->wordness[i] = conf_get_int_int(term->conf, CONF_wordness, i);
1505 if (conf_get_int(term->conf, CONF_no_alt_screen))
1506 swap_screen(term, 0, FALSE, FALSE);
1507 if (conf_get_int(term->conf, CONF_no_mouse_rep)) {
1508 term->xterm_mouse = 0;
1509 set_raw_mouse_mode(term->frontend, 0);
1511 if (conf_get_int(term->conf, CONF_no_remote_charset)) {
1512 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1513 term->sco_acs = term->alt_sco_acs = 0;
1516 if (!conf_get_str(term->conf, CONF_printer)) {
1517 term_print_finish(term);
1519 term_schedule_tblink(term);
1520 term_schedule_cblink(term);
1521 term_copy_stuff_from_conf(term);
1525 * Clear the scrollback.
1527 void term_clrsb(Terminal *term)
1529 unsigned char *line;
1531 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1532 sfree(line); /* this is compressed data, not a termline */
1534 term->tempsblines = 0;
1535 term->alt_sblines = 0;
1540 * Initialise the terminal.
1542 Terminal *term_init(Conf *myconf, struct unicode_data *ucsdata,
1548 * Allocate a new Terminal structure and initialise the fields
1551 term = snew(Terminal);
1552 term->frontend = frontend;
1553 term->ucsdata = ucsdata;
1554 term->conf = conf_copy(myconf);
1555 term->logctx = NULL;
1556 term->compatibility_level = TM_PUTTY;
1557 strcpy(term->id_string, "\033[?6c");
1558 term->cblink_pending = term->tblink_pending = FALSE;
1559 term->paste_buffer = NULL;
1560 term->paste_len = 0;
1561 bufchain_init(&term->inbuf);
1562 bufchain_init(&term->printer_buf);
1563 term->printing = term->only_printing = FALSE;
1564 term->print_job = NULL;
1565 term->vt52_mode = FALSE;
1566 term->cr_lf_return = FALSE;
1567 term->seen_disp_event = FALSE;
1568 term->mouse_is_down = FALSE;
1569 term->reset_132 = FALSE;
1570 term->cblinker = term->tblinker = 0;
1571 term->has_focus = 1;
1572 term->repeat_off = FALSE;
1573 term->termstate = TOPLEVEL;
1574 term->selstate = NO_SELECTION;
1577 term_copy_stuff_from_conf(term);
1579 term->screen = term->alt_screen = term->scrollback = NULL;
1580 term->tempsblines = 0;
1581 term->alt_sblines = 0;
1583 term->disptext = NULL;
1584 term->dispcursx = term->dispcursy = -1;
1587 term->rows = term->cols = -1;
1588 power_on(term, TRUE);
1589 term->beephead = term->beeptail = NULL;
1590 #ifdef OPTIMISE_SCROLL
1591 term->scrollhead = term->scrolltail = NULL;
1592 #endif /* OPTIMISE_SCROLL */
1594 term->lastbeep = FALSE;
1595 term->beep_overloaded = FALSE;
1596 term->attr_mask = 0xffffffff;
1597 term->resize_fn = NULL;
1598 term->resize_ctx = NULL;
1599 term->in_term_out = FALSE;
1601 term->ltemp_size = 0;
1602 term->wcFrom = NULL;
1604 term->wcFromTo_size = 0;
1606 term->window_update_pending = FALSE;
1608 term->bidi_cache_size = 0;
1609 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1612 term->basic_erase_char.chr = CSET_ASCII | ' ';
1613 term->basic_erase_char.attr = ATTR_DEFAULT;
1614 term->basic_erase_char.cc_next = 0;
1615 term->erase_char = term->basic_erase_char;
1620 void term_free(Terminal *term)
1623 struct beeptime *beep;
1626 while ((line = delpos234(term->scrollback, 0)) != NULL)
1627 sfree(line); /* compressed data, not a termline */
1628 freetree234(term->scrollback);
1629 while ((line = delpos234(term->screen, 0)) != NULL)
1631 freetree234(term->screen);
1632 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1634 freetree234(term->alt_screen);
1635 if (term->disptext) {
1636 for (i = 0; i < term->rows; i++)
1637 freeline(term->disptext[i]);
1639 sfree(term->disptext);
1640 while (term->beephead) {
1641 beep = term->beephead;
1642 term->beephead = beep->next;
1645 bufchain_clear(&term->inbuf);
1647 printer_finish_job(term->print_job);
1648 bufchain_clear(&term->printer_buf);
1649 sfree(term->paste_buffer);
1651 sfree(term->wcFrom);
1654 for (i = 0; i < term->bidi_cache_size; i++) {
1655 sfree(term->pre_bidi_cache[i].chars);
1656 sfree(term->post_bidi_cache[i].chars);
1657 sfree(term->post_bidi_cache[i].forward);
1658 sfree(term->post_bidi_cache[i].backward);
1660 sfree(term->pre_bidi_cache);
1661 sfree(term->post_bidi_cache);
1665 expire_timer_context(term);
1667 conf_free(term->conf);
1673 * Set up the terminal for a given size.
1675 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1678 termline **newdisp, *line;
1679 int i, j, oldrows = term->rows;
1681 int save_alt_which = term->alt_which;
1683 if (newrows == term->rows && newcols == term->cols &&
1684 newsavelines == term->savelines)
1685 return; /* nothing to do */
1687 /* Behave sensibly if we're given zero (or negative) rows/cols */
1689 if (newrows < 1) newrows = 1;
1690 if (newcols < 1) newcols = 1;
1693 swap_screen(term, 0, FALSE, FALSE);
1695 term->alt_t = term->marg_t = 0;
1696 term->alt_b = term->marg_b = newrows - 1;
1698 if (term->rows == -1) {
1699 term->scrollback = newtree234(NULL);
1700 term->screen = newtree234(NULL);
1701 term->tempsblines = 0;
1706 * Resize the screen and scrollback. We only need to shift
1707 * lines around within our data structures, because lineptr()
1708 * will take care of resizing each individual line if
1711 * - If the new screen is longer, we shunt lines in from temporary
1712 * scrollback if possible, otherwise we add new blank lines at
1715 * - If the new screen is shorter, we remove any blank lines at
1716 * the bottom if possible, otherwise shunt lines above the cursor
1717 * to scrollback if possible, otherwise delete lines below the
1720 * - Then, if the new scrollback length is less than the
1721 * amount of scrollback we actually have, we must throw some
1724 sblen = count234(term->scrollback);
1725 /* Do this loop to expand the screen if newrows > rows */
1726 assert(term->rows == count234(term->screen));
1727 while (term->rows < newrows) {
1728 if (term->tempsblines > 0) {
1729 unsigned char *cline;
1730 /* Insert a line from the scrollback at the top of the screen. */
1731 assert(sblen >= term->tempsblines);
1732 cline = delpos234(term->scrollback, --sblen);
1733 line = decompressline(cline, NULL);
1735 line->temporary = FALSE; /* reconstituted line is now real */
1736 term->tempsblines -= 1;
1737 addpos234(term->screen, line, 0);
1739 term->savecurs.y += 1;
1741 term->alt_savecurs.y += 1;
1743 /* Add a new blank line at the bottom of the screen. */
1744 line = newline(term, newcols, FALSE);
1745 addpos234(term->screen, line, count234(term->screen));
1749 /* Do this loop to shrink the screen if newrows < rows */
1750 while (term->rows > newrows) {
1751 if (term->curs.y < term->rows - 1) {
1752 /* delete bottom row, unless it contains the cursor */
1753 line = delpos234(term->screen, term->rows - 1);
1756 /* push top row to scrollback */
1757 line = delpos234(term->screen, 0);
1758 addpos234(term->scrollback, compressline(line), sblen++);
1760 term->tempsblines += 1;
1762 term->savecurs.y -= 1;
1764 term->alt_savecurs.y -= 1;
1768 assert(term->rows == newrows);
1769 assert(count234(term->screen) == newrows);
1771 /* Delete any excess lines from the scrollback. */
1772 while (sblen > newsavelines) {
1773 line = delpos234(term->scrollback, 0);
1777 if (sblen < term->tempsblines)
1778 term->tempsblines = sblen;
1779 assert(count234(term->scrollback) <= newsavelines);
1780 assert(count234(term->scrollback) >= term->tempsblines);
1783 /* Make a new displayed text buffer. */
1784 newdisp = snewn(newrows, termline *);
1785 for (i = 0; i < newrows; i++) {
1786 newdisp[i] = newline(term, newcols, FALSE);
1787 for (j = 0; j < newcols; j++)
1788 newdisp[i]->chars[j].attr = ATTR_INVALID;
1790 if (term->disptext) {
1791 for (i = 0; i < oldrows; i++)
1792 freeline(term->disptext[i]);
1794 sfree(term->disptext);
1795 term->disptext = newdisp;
1796 term->dispcursx = term->dispcursy = -1;
1798 /* Make a new alternate screen. */
1799 newalt = newtree234(NULL);
1800 for (i = 0; i < newrows; i++) {
1801 line = newline(term, newcols, TRUE);
1802 addpos234(newalt, line, i);
1804 if (term->alt_screen) {
1805 while (NULL != (line = delpos234(term->alt_screen, 0)))
1807 freetree234(term->alt_screen);
1809 term->alt_screen = newalt;
1810 term->alt_sblines = 0;
1812 term->tabs = sresize(term->tabs, newcols, unsigned char);
1815 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1816 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1819 /* Check that the cursor positions are still valid. */
1820 if (term->savecurs.y < 0)
1821 term->savecurs.y = 0;
1822 if (term->savecurs.y >= newrows)
1823 term->savecurs.y = newrows - 1;
1824 if (term->savecurs.x >= newcols)
1825 term->savecurs.x = newcols - 1;
1826 if (term->alt_savecurs.y < 0)
1827 term->alt_savecurs.y = 0;
1828 if (term->alt_savecurs.y >= newrows)
1829 term->alt_savecurs.y = newrows - 1;
1830 if (term->alt_savecurs.x >= newcols)
1831 term->alt_savecurs.x = newcols - 1;
1832 if (term->curs.y < 0)
1834 if (term->curs.y >= newrows)
1835 term->curs.y = newrows - 1;
1836 if (term->curs.x >= newcols)
1837 term->curs.x = newcols - 1;
1838 if (term->alt_y < 0)
1840 if (term->alt_y >= newrows)
1841 term->alt_y = newrows - 1;
1842 if (term->alt_x >= newcols)
1843 term->alt_x = newcols - 1;
1844 term->alt_x = term->alt_y = 0;
1845 term->wrapnext = term->alt_wnext = FALSE;
1847 term->rows = newrows;
1848 term->cols = newcols;
1849 term->savelines = newsavelines;
1851 swap_screen(term, save_alt_which, FALSE, FALSE);
1855 if (term->resize_fn)
1856 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1860 * Hand a function and context pointer to the terminal which it can
1861 * use to notify a back end of resizes.
1863 void term_provide_resize_fn(Terminal *term,
1864 void (*resize_fn)(void *, int, int),
1867 term->resize_fn = resize_fn;
1868 term->resize_ctx = resize_ctx;
1869 if (resize_fn && term->cols > 0 && term->rows > 0)
1870 resize_fn(resize_ctx, term->cols, term->rows);
1873 /* Find the bottom line on the screen that has any content.
1874 * If only the top line has content, returns 0.
1875 * If no lines have content, return -1.
1877 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1880 for (i = count234(screen) - 1; i >= 0; i--) {
1881 termline *line = index234(screen, i);
1883 for (j = 0; j < line->cols; j++)
1884 if (!termchars_equal(&line->chars[j], &term->erase_char))
1886 if (j != line->cols) break;
1892 * Swap screens. If `reset' is TRUE and we have been asked to
1893 * switch to the alternate screen, we must bring most of its
1894 * configuration from the main screen and erase the contents of the
1895 * alternate screen completely. (This is even true if we're already
1896 * on it! Blame xterm.)
1898 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1905 reset = FALSE; /* do no weird resetting if which==0 */
1907 if (which != term->alt_which) {
1908 term->alt_which = which;
1910 ttr = term->alt_screen;
1911 term->alt_screen = term->screen;
1913 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1915 if (!reset && !keep_cur_pos)
1916 term->curs.x = term->alt_x;
1919 if (!reset && !keep_cur_pos)
1920 term->curs.y = term->alt_y;
1923 if (!reset) term->marg_t = term->alt_t;
1926 if (!reset) term->marg_b = term->alt_b;
1929 if (!reset) term->dec_om = term->alt_om;
1932 if (!reset) term->wrap = term->alt_wrap;
1935 if (!reset) term->wrapnext = term->alt_wnext;
1936 term->alt_wnext = t;
1938 if (!reset) term->insert = term->alt_ins;
1941 if (!reset) term->cset = term->alt_cset;
1944 if (!reset) term->utf = term->alt_utf;
1947 if (!reset) term->sco_acs = term->alt_sco_acs;
1948 term->alt_sco_acs = t;
1950 tp = term->savecurs;
1951 if (!reset && !keep_cur_pos)
1952 term->savecurs = term->alt_savecurs;
1953 term->alt_savecurs = tp;
1954 t = term->save_cset;
1955 if (!reset && !keep_cur_pos)
1956 term->save_cset = term->alt_save_cset;
1957 term->alt_save_cset = t;
1958 t = term->save_csattr;
1959 if (!reset && !keep_cur_pos)
1960 term->save_csattr = term->alt_save_csattr;
1961 term->alt_save_csattr = t;
1962 t = term->save_attr;
1963 if (!reset && !keep_cur_pos)
1964 term->save_attr = term->alt_save_attr;
1965 term->alt_save_attr = t;
1967 if (!reset && !keep_cur_pos)
1968 term->save_utf = term->alt_save_utf;
1969 term->alt_save_utf = t;
1970 t = term->save_wnext;
1971 if (!reset && !keep_cur_pos)
1972 term->save_wnext = term->alt_save_wnext;
1973 term->alt_save_wnext = t;
1974 t = term->save_sco_acs;
1975 if (!reset && !keep_cur_pos)
1976 term->save_sco_acs = term->alt_save_sco_acs;
1977 term->alt_save_sco_acs = t;
1980 if (reset && term->screen) {
1982 * Yes, this _is_ supposed to honour background-colour-erase.
1984 erase_lots(term, FALSE, TRUE, TRUE);
1989 * Update the scroll bar.
1991 static void update_sbar(Terminal *term)
1993 int nscroll = sblines(term);
1994 set_sbar(term->frontend, nscroll + term->rows,
1995 nscroll + term->disptop, term->rows);
1999 * Check whether the region bounded by the two pointers intersects
2000 * the scroll region, and de-select the on-screen selection if so.
2002 static void check_selection(Terminal *term, pos from, pos to)
2004 if (poslt(from, term->selend) && poslt(term->selstart, to))
2009 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
2010 * for backward.) `sb' is TRUE if the scrolling is permitted to
2011 * affect the scrollback buffer.
2013 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
2016 int i, seltop, scrollwinsize;
2017 #ifdef OPTIMISE_SCROLL
2018 int olddisptop, shift;
2019 #endif /* OPTIMISE_SCROLL */
2021 if (topline != 0 || term->alt_which != 0)
2024 #ifdef OPTIMISE_SCROLL
2025 olddisptop = term->disptop;
2027 #endif /* OPTIMISE_SCROLL */
2029 scrollwinsize = botline - topline + 1;
2033 if (lines > scrollwinsize)
2034 lines = scrollwinsize;
2035 while (lines-- > 0) {
2036 line = delpos234(term->screen, botline);
2037 resizeline(term, line, term->cols);
2038 for (i = 0; i < term->cols; i++)
2039 copy_termchar(line, i, &term->erase_char);
2040 line->lattr = LATTR_NORM;
2041 addpos234(term->screen, line, topline);
2043 if (term->selstart.y >= topline && term->selstart.y <= botline) {
2045 if (term->selstart.y > botline) {
2046 term->selstart.y = botline + 1;
2047 term->selstart.x = 0;
2050 if (term->selend.y >= topline && term->selend.y <= botline) {
2052 if (term->selend.y > botline) {
2053 term->selend.y = botline + 1;
2059 if (lines > scrollwinsize)
2060 lines = scrollwinsize;
2061 while (lines-- > 0) {
2062 line = delpos234(term->screen, topline);
2063 #ifdef TERM_CC_DIAGS
2066 if (sb && term->savelines > 0) {
2067 int sblen = count234(term->scrollback);
2069 * We must add this line to the scrollback. We'll
2070 * remove a line from the top of the scrollback if
2071 * the scrollback is full.
2073 if (sblen == term->savelines) {
2074 unsigned char *cline;
2077 cline = delpos234(term->scrollback, 0);
2080 term->tempsblines += 1;
2082 addpos234(term->scrollback, compressline(line), sblen);
2084 /* now `line' itself can be reused as the bottom line */
2087 * If the user is currently looking at part of the
2088 * scrollback, and they haven't enabled any options
2089 * that are going to reset the scrollback as a
2090 * result of this movement, then the chances are
2091 * they'd like to keep looking at the same line. So
2092 * we move their viewpoint at the same rate as the
2093 * scroll, at least until their viewpoint hits the
2094 * top end of the scrollback buffer, at which point
2095 * we don't have the choice any more.
2097 * Thanks to Jan Holmen Holsten for the idea and
2098 * initial implementation.
2100 if (term->disptop > -term->savelines && term->disptop < 0)
2103 resizeline(term, line, term->cols);
2104 for (i = 0; i < term->cols; i++)
2105 copy_termchar(line, i, &term->erase_char);
2106 line->lattr = LATTR_NORM;
2107 addpos234(term->screen, line, botline);
2110 * If the selection endpoints move into the scrollback,
2111 * we keep them moving until they hit the top. However,
2112 * of course, if the line _hasn't_ moved into the
2113 * scrollback then we don't do this, and cut them off
2114 * at the top of the scroll region.
2116 * This applies to selstart and selend (for an existing
2117 * selection), and also selanchor (for one being
2118 * selected as we speak).
2120 seltop = sb ? -term->savelines : topline;
2122 if (term->selstate != NO_SELECTION) {
2123 if (term->selstart.y >= seltop &&
2124 term->selstart.y <= botline) {
2126 if (term->selstart.y < seltop) {
2127 term->selstart.y = seltop;
2128 term->selstart.x = 0;
2131 if (term->selend.y >= seltop && term->selend.y <= botline) {
2133 if (term->selend.y < seltop) {
2134 term->selend.y = seltop;
2138 if (term->selanchor.y >= seltop &&
2139 term->selanchor.y <= botline) {
2140 term->selanchor.y--;
2141 if (term->selanchor.y < seltop) {
2142 term->selanchor.y = seltop;
2143 term->selanchor.x = 0;
2149 #ifdef OPTIMISE_SCROLL
2150 shift += term->disptop - olddisptop;
2151 if (shift < term->rows && shift > -term->rows && shift != 0)
2152 scroll_display(term, topline, botline, shift);
2153 #endif /* OPTIMISE_SCROLL */
2156 #ifdef OPTIMISE_SCROLL
2158 * Add a scroll of a region on the screen into the pending scroll list.
2159 * `lines' is +ve for scrolling forward, -ve for backward.
2161 * If the scroll is on the same area as the last scroll in the list,
2164 static void save_scroll(Terminal *term, int topline, int botline, int lines)
2166 struct scrollregion *newscroll;
2167 if (term->scrolltail &&
2168 term->scrolltail->topline == topline &&
2169 term->scrolltail->botline == botline) {
2170 term->scrolltail->lines += lines;
2172 newscroll = snew(struct scrollregion);
2173 newscroll->topline = topline;
2174 newscroll->botline = botline;
2175 newscroll->lines = lines;
2176 newscroll->next = NULL;
2178 if (!term->scrollhead)
2179 term->scrollhead = newscroll;
2181 term->scrolltail->next = newscroll;
2182 term->scrolltail = newscroll;
2187 * Scroll the physical display, and our conception of it in disptext.
2189 static void scroll_display(Terminal *term, int topline, int botline, int lines)
2191 int distance, nlines, i, j;
2193 distance = lines > 0 ? lines : -lines;
2194 nlines = botline - topline + 1 - distance;
2196 for (i = 0; i < nlines; i++)
2197 for (j = 0; j < term->cols; j++)
2198 copy_termchar(term->disptext[i], j,
2199 term->disptext[i+distance]->chars+j);
2200 if (term->dispcursy >= 0 &&
2201 term->dispcursy >= topline + distance &&
2202 term->dispcursy < topline + distance + nlines)
2203 term->dispcursy -= distance;
2204 for (i = 0; i < distance; i++)
2205 for (j = 0; j < term->cols; j++)
2206 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
2208 for (i = nlines; i-- ;)
2209 for (j = 0; j < term->cols; j++)
2210 copy_termchar(term->disptext[i+distance], j,
2211 term->disptext[i]->chars+j);
2212 if (term->dispcursy >= 0 &&
2213 term->dispcursy >= topline &&
2214 term->dispcursy < topline + nlines)
2215 term->dispcursy += distance;
2216 for (i = 0; i < distance; i++)
2217 for (j = 0; j < term->cols; j++)
2218 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
2220 save_scroll(term, topline, botline, lines);
2222 #endif /* OPTIMISE_SCROLL */
2225 * Move the cursor to a given position, clipping at boundaries. We
2226 * may or may not want to clip at the scroll margin: marg_clip is 0
2227 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2228 * even _being_ outside the margins.
2230 static void move(Terminal *term, int x, int y, int marg_clip)
2234 if (x >= term->cols)
2237 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2240 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2246 if (y >= term->rows)
2250 term->wrapnext = FALSE;
2254 * Save or restore the cursor and SGR mode.
2256 static void save_cursor(Terminal *term, int save)
2259 term->savecurs = term->curs;
2260 term->save_attr = term->curr_attr;
2261 term->save_cset = term->cset;
2262 term->save_utf = term->utf;
2263 term->save_wnext = term->wrapnext;
2264 term->save_csattr = term->cset_attr[term->cset];
2265 term->save_sco_acs = term->sco_acs;
2267 term->curs = term->savecurs;
2268 /* Make sure the window hasn't shrunk since the save */
2269 if (term->curs.x >= term->cols)
2270 term->curs.x = term->cols - 1;
2271 if (term->curs.y >= term->rows)
2272 term->curs.y = term->rows - 1;
2274 term->curr_attr = term->save_attr;
2275 term->cset = term->save_cset;
2276 term->utf = term->save_utf;
2277 term->wrapnext = term->save_wnext;
2279 * wrapnext might reset to False if the x position is no
2280 * longer at the rightmost edge.
2282 if (term->wrapnext && term->curs.x < term->cols-1)
2283 term->wrapnext = FALSE;
2284 term->cset_attr[term->cset] = term->save_csattr;
2285 term->sco_acs = term->save_sco_acs;
2286 set_erase_char(term);
2291 * This function is called before doing _anything_ which affects
2292 * only part of a line of text. It is used to mark the boundary
2293 * between two character positions, and it indicates that some sort
2294 * of effect is going to happen on only one side of that boundary.
2296 * The effect of this function is to check whether a CJK
2297 * double-width character is straddling the boundary, and to remove
2298 * it and replace it with two spaces if so. (Of course, one or
2299 * other of those spaces is then likely to be replaced with
2300 * something else again, as a result of whatever happens next.)
2302 * Also, if the boundary is at the right-hand _edge_ of the screen,
2303 * it implies something deliberate is being done to the rightmost
2304 * column position; hence we must clear LATTR_WRAPPED2.
2306 * The input to the function is the coordinates of the _second_
2307 * character of the pair.
2309 static void check_boundary(Terminal *term, int x, int y)
2313 /* Validate input coordinates, just in case. */
2314 if (x == 0 || x > term->cols)
2317 ldata = scrlineptr(y);
2318 check_line_size(term, ldata);
2319 if (x == term->cols) {
2320 ldata->lattr &= ~LATTR_WRAPPED2;
2322 if (ldata->chars[x].chr == UCSWIDE) {
2323 clear_cc(ldata, x-1);
2325 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2326 ldata->chars[x] = ldata->chars[x-1];
2332 * Erase a large portion of the screen: the whole screen, or the
2333 * whole line, or parts thereof.
2335 static void erase_lots(Terminal *term,
2336 int line_only, int from_begin, int to_end)
2340 int erasing_lines_from_top = 0;
2343 start.y = term->curs.y;
2345 end.y = term->curs.y + 1;
2347 erase_lattr = FALSE;
2362 if (!from_begin || !to_end)
2363 check_boundary(term, term->curs.x, term->curs.y);
2364 check_selection(term, start, end);
2366 /* Clear screen also forces a full window redraw, just in case. */
2367 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2368 term_invalidate(term);
2370 /* Lines scrolled away shouldn't be brought back on if the terminal
2372 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2373 erasing_lines_from_top = 1;
2375 if (term->erase_to_scrollback && erasing_lines_from_top) {
2376 /* If it's a whole number of lines, starting at the top, and
2377 * we're fully erasing them, erase by scrolling and keep the
2378 * lines in the scrollback. */
2379 int scrolllines = end.y;
2380 if (end.y == term->rows) {
2381 /* Shrink until we find a non-empty row.*/
2382 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2384 if (scrolllines > 0)
2385 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2387 termline *ldata = scrlineptr(start.y);
2388 while (poslt(start, end)) {
2389 check_line_size(term, ldata);
2390 if (start.x == term->cols) {
2392 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2394 ldata->lattr = LATTR_NORM;
2396 copy_termchar(ldata, start.x, &term->erase_char);
2398 if (incpos(start) && start.y < term->rows) {
2399 ldata = scrlineptr(start.y);
2404 /* After an erase of lines from the top of the screen, we shouldn't
2405 * bring the lines back again if the terminal enlarges (since the user or
2406 * application has explictly thrown them away). */
2407 if (erasing_lines_from_top && !(term->alt_which))
2408 term->tempsblines = 0;
2412 * Insert or delete characters within the current line. n is +ve if
2413 * insertion is desired, and -ve for deletion.
2415 static void insch(Terminal *term, int n)
2417 int dir = (n < 0 ? -1 : +1);
2422 n = (n < 0 ? -n : n);
2423 if (n > term->cols - term->curs.x)
2424 n = term->cols - term->curs.x;
2425 m = term->cols - term->curs.x - n;
2428 * We must de-highlight the selection if it overlaps any part of
2429 * the region affected by this operation, i.e. the region from the
2430 * current cursor position to end-of-line, _unless_ the entirety
2431 * of the selection is going to be moved to the left or right by
2432 * this operation but otherwise unchanged, in which case we can
2433 * simply move the highlight with the text.
2435 eol.y = term->curs.y;
2437 if (poslt(term->curs, term->selend) && poslt(term->selstart, eol)) {
2438 pos okstart = term->curs;
2441 /* Insertion: n characters at EOL will be splatted. */
2444 /* Deletion: n characters at cursor position will be splatted. */
2447 if (posle(okstart, term->selstart) && posle(term->selend, okend)) {
2448 /* Selection is contained entirely in the interval
2449 * [okstart,okend), so we need only adjust the selection
2451 term->selstart.x += dir * n;
2452 term->selend.x += dir * n;
2453 assert(term->selstart.x >= term->curs.x);
2454 assert(term->selstart.x < term->cols);
2455 assert(term->selend.x > term->curs.x);
2456 assert(term->selend.x <= term->cols);
2458 /* Selection is not wholly contained in that interval, so
2459 * we must unhighlight it. */
2464 check_boundary(term, term->curs.x, term->curs.y);
2466 check_boundary(term, term->curs.x + n, term->curs.y);
2467 ldata = scrlineptr(term->curs.y);
2469 for (j = 0; j < m; j++)
2470 move_termchar(ldata,
2471 ldata->chars + term->curs.x + j,
2472 ldata->chars + term->curs.x + j + n);
2474 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2477 move_termchar(ldata,
2478 ldata->chars + term->curs.x + j + n,
2479 ldata->chars + term->curs.x + j);
2481 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2486 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2487 * whether the mode is a DEC private one or a normal one.)
2489 static void toggle_mode(Terminal *term, int mode, int query, int state)
2493 case 1: /* DECCKM: application cursor keys */
2494 term->app_cursor_keys = state;
2496 case 2: /* DECANM: VT52 mode */
2497 term->vt52_mode = !state;
2498 if (term->vt52_mode) {
2499 term->blink_is_real = FALSE;
2500 term->vt52_bold = FALSE;
2502 term->blink_is_real = term->blinktext;
2504 term_schedule_tblink(term);
2506 case 3: /* DECCOLM: 80/132 columns */
2508 if (!term->no_remote_resize)
2509 request_resize(term->frontend, state ? 132 : 80, term->rows);
2510 term->reset_132 = state;
2511 term->alt_t = term->marg_t = 0;
2512 term->alt_b = term->marg_b = term->rows - 1;
2513 move(term, 0, 0, 0);
2514 erase_lots(term, FALSE, TRUE, TRUE);
2516 case 5: /* DECSCNM: reverse video */
2518 * Toggle reverse video. If we receive an OFF within the
2519 * visual bell timeout period after an ON, we trigger an
2520 * effective visual bell, so that ESC[?5hESC[?5l will
2521 * always be an actually _visible_ visual bell.
2523 if (term->rvideo && !state) {
2524 /* This is an OFF, so set up a vbell */
2525 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2526 } else if (!term->rvideo && state) {
2527 /* This is an ON, so we notice the time and save it. */
2528 term->rvbell_startpoint = GETTICKCOUNT();
2530 term->rvideo = state;
2531 seen_disp_event(term);
2533 case 6: /* DECOM: DEC origin mode */
2534 term->dec_om = state;
2536 case 7: /* DECAWM: auto wrap */
2539 case 8: /* DECARM: auto key repeat */
2540 term->repeat_off = !state;
2542 case 10: /* DECEDM: set local edit mode */
2543 term->term_editing = state;
2544 if (term->ldisc) /* cause ldisc to notice changes */
2545 ldisc_send(term->ldisc, NULL, 0, 0);
2547 case 25: /* DECTCEM: enable/disable cursor */
2548 compatibility2(OTHER, VT220);
2549 term->cursor_on = state;
2550 seen_disp_event(term);
2552 case 47: /* alternate screen */
2553 compatibility(OTHER);
2555 swap_screen(term, term->no_alt_screen ? 0 : state, FALSE, FALSE);
2556 if (term->scroll_on_disp)
2559 case 1000: /* xterm mouse 1 (normal) */
2560 term->xterm_mouse = state ? 1 : 0;
2561 set_raw_mouse_mode(term->frontend, state);
2563 case 1002: /* xterm mouse 2 (inc. button drags) */
2564 term->xterm_mouse = state ? 2 : 0;
2565 set_raw_mouse_mode(term->frontend, state);
2567 case 1006: /* xterm extended mouse */
2568 term->xterm_extended_mouse = state ? 1 : 0;
2570 case 1015: /* urxvt extended mouse */
2571 term->urxvt_extended_mouse = state ? 1 : 0;
2573 case 1047: /* alternate screen */
2574 compatibility(OTHER);
2576 swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, TRUE);
2577 if (term->scroll_on_disp)
2580 case 1048: /* save/restore cursor */
2581 if (!term->no_alt_screen)
2582 save_cursor(term, state);
2583 if (!state) seen_disp_event(term);
2585 case 1049: /* cursor & alternate screen */
2586 if (state && !term->no_alt_screen)
2587 save_cursor(term, state);
2588 if (!state) seen_disp_event(term);
2589 compatibility(OTHER);
2591 swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, FALSE);
2592 if (!state && !term->no_alt_screen)
2593 save_cursor(term, state);
2594 if (term->scroll_on_disp)
2597 case 2004: /* xterm bracketed paste */
2598 term->bracketed_paste = state ? TRUE : FALSE;
2602 case 4: /* IRM: set insert mode */
2603 compatibility(VT102);
2604 term->insert = state;
2606 case 12: /* SRM: set echo mode */
2607 term->term_echoing = !state;
2608 if (term->ldisc) /* cause ldisc to notice changes */
2609 ldisc_send(term->ldisc, NULL, 0, 0);
2611 case 20: /* LNM: Return sends ... */
2612 term->cr_lf_return = state;
2614 case 34: /* WYULCURM: Make cursor BIG */
2615 compatibility2(OTHER, VT220);
2616 term->big_cursor = !state;
2621 * Process an OSC sequence: set window title or icon name.
2623 static void do_osc(Terminal *term)
2626 while (term->osc_strlen--)
2627 term->wordness[(unsigned char)
2628 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2630 term->osc_string[term->osc_strlen] = '\0';
2631 switch (term->esc_args[0]) {
2634 if (!term->no_remote_wintitle)
2635 set_icon(term->frontend, term->osc_string);
2636 if (term->esc_args[0] == 1)
2638 /* fall through: parameter 0 means set both */
2641 if (!term->no_remote_wintitle)
2642 set_title(term->frontend, term->osc_string);
2649 * ANSI printing routines.
2651 static void term_print_setup(Terminal *term, char *printer)
2653 bufchain_clear(&term->printer_buf);
2654 term->print_job = printer_start_job(printer);
2656 static void term_print_flush(Terminal *term)
2661 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2662 bufchain_prefix(&term->printer_buf, &data, &len);
2665 printer_job_data(term->print_job, data, len);
2666 bufchain_consume(&term->printer_buf, len);
2669 static void term_print_finish(Terminal *term)
2675 if (!term->printing && !term->only_printing)
2676 return; /* we need do nothing */
2678 term_print_flush(term);
2679 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2680 bufchain_prefix(&term->printer_buf, &data, &len);
2682 if (c == '\033' || c == '\233') {
2683 bufchain_consume(&term->printer_buf, size);
2686 printer_job_data(term->print_job, &c, 1);
2687 bufchain_consume(&term->printer_buf, 1);
2690 printer_finish_job(term->print_job);
2691 term->print_job = NULL;
2692 term->printing = term->only_printing = FALSE;
2696 * Remove everything currently in `inbuf' and stick it up on the
2697 * in-memory display. There's a big state machine in here to
2698 * process escape sequences...
2700 static void term_out(Terminal *term)
2704 unsigned char localbuf[256], *chars;
2709 chars = NULL; /* placate compiler warnings */
2710 while (nchars > 0 || unget != -1 || bufchain_size(&term->inbuf) > 0) {
2714 bufchain_prefix(&term->inbuf, &ret, &nchars);
2715 if (nchars > sizeof(localbuf))
2716 nchars = sizeof(localbuf);
2717 memcpy(localbuf, ret, nchars);
2718 bufchain_consume(&term->inbuf, nchars);
2720 assert(chars != NULL);
2726 * Optionally log the session traffic to a file. Useful for
2727 * debugging and possibly also useful for actual logging.
2729 if (term->logtype == LGTYP_DEBUG && term->logctx)
2730 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2736 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2737 * be able to display 8-bit characters, but I'll let that go 'cause
2742 * If we're printing, add the character to the printer
2745 if (term->printing) {
2746 bufchain_add(&term->printer_buf, &c, 1);
2749 * If we're in print-only mode, we use a much simpler
2750 * state machine designed only to recognise the ESC[4i
2751 * termination sequence.
2753 if (term->only_printing) {
2755 term->print_state = 1;
2756 else if (c == (unsigned char)'\233')
2757 term->print_state = 2;
2758 else if (c == '[' && term->print_state == 1)
2759 term->print_state = 2;
2760 else if (c == '4' && term->print_state == 2)
2761 term->print_state = 3;
2762 else if (c == 'i' && term->print_state == 3)
2763 term->print_state = 4;
2765 term->print_state = 0;
2766 if (term->print_state == 4) {
2767 term_print_finish(term);
2773 /* First see about all those translations. */
2774 if (term->termstate == TOPLEVEL) {
2776 switch (term->utf_state) {
2779 /* UTF-8 must be stateless so we ignore iso2022. */
2780 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2781 c = term->ucsdata->unitab_ctrl[c];
2782 else c = ((unsigned char)c) | CSET_ASCII;
2784 } else if ((c & 0xe0) == 0xc0) {
2785 term->utf_size = term->utf_state = 1;
2786 term->utf_char = (c & 0x1f);
2787 } else if ((c & 0xf0) == 0xe0) {
2788 term->utf_size = term->utf_state = 2;
2789 term->utf_char = (c & 0x0f);
2790 } else if ((c & 0xf8) == 0xf0) {
2791 term->utf_size = term->utf_state = 3;
2792 term->utf_char = (c & 0x07);
2793 } else if ((c & 0xfc) == 0xf8) {
2794 term->utf_size = term->utf_state = 4;
2795 term->utf_char = (c & 0x03);
2796 } else if ((c & 0xfe) == 0xfc) {
2797 term->utf_size = term->utf_state = 5;
2798 term->utf_char = (c & 0x01);
2809 if ((c & 0xC0) != 0x80) {
2812 term->utf_state = 0;
2815 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2816 if (--term->utf_state)
2821 /* Is somebody trying to be evil! */
2823 (c < 0x800 && term->utf_size >= 2) ||
2824 (c < 0x10000 && term->utf_size >= 3) ||
2825 (c < 0x200000 && term->utf_size >= 4) ||
2826 (c < 0x4000000 && term->utf_size >= 5))
2829 /* Unicode line separator and paragraph separator are CR-LF */
2830 if (c == 0x2028 || c == 0x2029)
2833 /* High controls are probably a Baaad idea too. */
2837 /* The UTF-16 surrogates are not nice either. */
2838 /* The standard give the option of decoding these:
2839 * I don't want to! */
2840 if (c >= 0xD800 && c < 0xE000)
2843 /* ISO 10646 characters now limited to UTF-16 range. */
2847 /* This is currently a TagPhobic application.. */
2848 if (c >= 0xE0000 && c <= 0xE007F)
2851 /* U+FEFF is best seen as a null. */
2854 /* But U+FFFE is an error. */
2855 if (c == 0xFFFE || c == 0xFFFF)
2860 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2861 else if(term->sco_acs &&
2862 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2864 if (term->sco_acs == 2) c |= 0x80;
2867 switch (term->cset_attr[term->cset]) {
2869 * Linedraw characters are different from 'ESC ( B'
2870 * only for a small range. For ones outside that
2871 * range, make sure we use the same font as well as
2872 * the same encoding.
2875 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2876 c = term->ucsdata->unitab_ctrl[c];
2878 c = ((unsigned char) c) | CSET_LINEDRW;
2882 /* If UK-ASCII, make the '#' a LineDraw Pound */
2884 c = '}' | CSET_LINEDRW;
2887 /*FALLTHROUGH*/ case CSET_ASCII:
2888 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2889 c = term->ucsdata->unitab_ctrl[c];
2891 c = ((unsigned char) c) | CSET_ASCII;
2894 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2901 * How about C1 controls?
2902 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2904 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2905 !term->vt52_mode && has_compat(VT220)) {
2909 term->termstate = SEEN_ESC;
2910 term->esc_query = FALSE;
2911 c = '@' + (c & 0x1F);
2915 /* Or the GL control. */
2916 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2917 if (term->curs.x && !term->wrapnext)
2919 term->wrapnext = FALSE;
2920 /* destructive backspace might be disabled */
2921 if (!term->no_dbackspace) {
2922 check_boundary(term, term->curs.x, term->curs.y);
2923 check_boundary(term, term->curs.x+1, term->curs.y);
2924 copy_termchar(scrlineptr(term->curs.y),
2925 term->curs.x, &term->erase_char);
2928 /* Or normal C0 controls. */
2929 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2931 case '\005': /* ENQ: terminal type query */
2933 * Strictly speaking this is VT100 but a VT100 defaults to
2934 * no response. Other terminals respond at their option.
2936 * Don't put a CR in the default string as this tends to
2937 * upset some weird software.
2939 compatibility(ANSIMIN);
2941 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2942 term->answerback, term->answerbacklen, 0);
2945 case '\007': /* BEL: Bell */
2947 struct beeptime *newbeep;
2948 unsigned long ticks;
2950 ticks = GETTICKCOUNT();
2952 if (!term->beep_overloaded) {
2953 newbeep = snew(struct beeptime);
2954 newbeep->ticks = ticks;
2955 newbeep->next = NULL;
2956 if (!term->beephead)
2957 term->beephead = newbeep;
2959 term->beeptail->next = newbeep;
2960 term->beeptail = newbeep;
2965 * Throw out any beeps that happened more than
2968 while (term->beephead &&
2969 term->beephead->ticks < ticks - term->bellovl_t) {
2970 struct beeptime *tmp = term->beephead;
2971 term->beephead = tmp->next;
2973 if (!term->beephead)
2974 term->beeptail = NULL;
2978 if (term->bellovl && term->beep_overloaded &&
2979 ticks - term->lastbeep >= (unsigned)term->bellovl_s) {
2981 * If we're currently overloaded and the
2982 * last beep was more than s seconds ago,
2983 * leave overload mode.
2985 term->beep_overloaded = FALSE;
2986 } else if (term->bellovl && !term->beep_overloaded &&
2987 term->nbeeps >= term->bellovl_n) {
2989 * Now, if we have n or more beeps
2990 * remaining in the queue, go into overload
2993 term->beep_overloaded = TRUE;
2995 term->lastbeep = ticks;
2998 * Perform an actual beep if we're not overloaded.
3000 if (!term->bellovl || !term->beep_overloaded) {
3001 do_beep(term->frontend, term->beep);
3003 if (term->beep == BELL_VISUAL) {
3004 term_schedule_vbell(term, FALSE, 0);
3007 seen_disp_event(term);
3010 case '\b': /* BS: Back space */
3011 if (term->curs.x == 0 &&
3012 (term->curs.y == 0 || term->wrap == 0))
3014 else if (term->curs.x == 0 && term->curs.y > 0)
3015 term->curs.x = term->cols - 1, term->curs.y--;
3016 else if (term->wrapnext)
3017 term->wrapnext = FALSE;
3020 seen_disp_event(term);
3022 case '\016': /* LS1: Locking-shift one */
3023 compatibility(VT100);
3026 case '\017': /* LS0: Locking-shift zero */
3027 compatibility(VT100);
3030 case '\033': /* ESC: Escape */
3031 if (term->vt52_mode)
3032 term->termstate = VT52_ESC;
3034 compatibility(ANSIMIN);
3035 term->termstate = SEEN_ESC;
3036 term->esc_query = FALSE;
3039 case '\015': /* CR: Carriage return */
3041 term->wrapnext = FALSE;
3042 seen_disp_event(term);
3044 if (term->crhaslf) {
3045 if (term->curs.y == term->marg_b)
3046 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3047 else if (term->curs.y < term->rows - 1)
3051 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
3053 case '\014': /* FF: Form feed */
3054 if (has_compat(SCOANSI)) {
3055 move(term, 0, 0, 0);
3056 erase_lots(term, FALSE, FALSE, TRUE);
3057 if (term->scroll_on_disp)
3059 term->wrapnext = FALSE;
3060 seen_disp_event(term);
3063 case '\013': /* VT: Line tabulation */
3064 compatibility(VT100);
3065 case '\012': /* LF: Line feed */
3066 if (term->curs.y == term->marg_b)
3067 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3068 else if (term->curs.y < term->rows - 1)
3072 term->wrapnext = FALSE;
3073 seen_disp_event(term);
3075 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
3077 case '\t': /* HT: Character tabulation */
3079 pos old_curs = term->curs;
3080 termline *ldata = scrlineptr(term->curs.y);
3084 } while (term->curs.x < term->cols - 1 &&
3085 !term->tabs[term->curs.x]);
3087 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
3088 if (term->curs.x >= term->cols / 2)
3089 term->curs.x = term->cols / 2 - 1;
3091 if (term->curs.x >= term->cols)
3092 term->curs.x = term->cols - 1;
3095 check_selection(term, old_curs, term->curs);
3097 seen_disp_event(term);
3101 switch (term->termstate) {
3103 /* Only graphic characters get this far;
3104 * ctrls are stripped above */
3106 termline *cline = scrlineptr(term->curs.y);
3111 width = (term->cjk_ambig_wide ?
3112 mk_wcwidth_cjk((unsigned int) c) :
3113 mk_wcwidth((unsigned int) c));
3115 if (term->wrapnext && term->wrap && width > 0) {
3116 cline->lattr |= LATTR_WRAPPED;
3117 if (term->curs.y == term->marg_b)
3118 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3119 else if (term->curs.y < term->rows - 1)
3122 term->wrapnext = FALSE;
3123 cline = scrlineptr(term->curs.y);
3125 if (term->insert && width > 0)
3127 if (term->selstate != NO_SELECTION) {
3128 pos cursplus = term->curs;
3130 check_selection(term, term->curs, cursplus);
3132 if (((c & CSET_MASK) == CSET_ASCII ||
3133 (c & CSET_MASK) == 0) &&
3135 logtraffic(term->logctx, (unsigned char) c,
3141 * If we're about to display a double-width
3142 * character starting in the rightmost
3143 * column, then we do something special
3144 * instead. We must print a space in the
3145 * last column of the screen, then wrap;
3146 * and we also set LATTR_WRAPPED2 which
3147 * instructs subsequent cut-and-pasting not
3148 * only to splice this line to the one
3149 * after it, but to ignore the space in the
3150 * last character position as well.
3151 * (Because what was actually output to the
3152 * terminal was presumably just a sequence
3153 * of CJK characters, and we don't want a
3154 * space to be pasted in the middle of
3155 * those just because they had the
3156 * misfortune to start in the wrong parity
3157 * column. xterm concurs.)
3159 check_boundary(term, term->curs.x, term->curs.y);
3160 check_boundary(term, term->curs.x+2, term->curs.y);
3161 if (term->curs.x == term->cols-1) {
3162 copy_termchar(cline, term->curs.x,
3164 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
3165 if (term->curs.y == term->marg_b)
3166 scroll(term, term->marg_t, term->marg_b,
3168 else if (term->curs.y < term->rows - 1)
3171 cline = scrlineptr(term->curs.y);
3172 /* Now we must check_boundary again, of course. */
3173 check_boundary(term, term->curs.x, term->curs.y);
3174 check_boundary(term, term->curs.x+2, term->curs.y);
3178 clear_cc(cline, term->curs.x);
3179 cline->chars[term->curs.x].chr = c;
3180 cline->chars[term->curs.x].attr = term->curr_attr;
3185 clear_cc(cline, term->curs.x);
3186 cline->chars[term->curs.x].chr = UCSWIDE;
3187 cline->chars[term->curs.x].attr = term->curr_attr;
3191 check_boundary(term, term->curs.x, term->curs.y);
3192 check_boundary(term, term->curs.x+1, term->curs.y);
3195 clear_cc(cline, term->curs.x);
3196 cline->chars[term->curs.x].chr = c;
3197 cline->chars[term->curs.x].attr = term->curr_attr;
3201 if (term->curs.x > 0) {
3202 int x = term->curs.x - 1;
3204 /* If we're in wrapnext state, the character
3205 * to combine with is _here_, not to our left. */
3210 * If the previous character is
3211 * UCSWIDE, back up another one.
3213 if (cline->chars[x].chr == UCSWIDE) {
3218 add_cc(cline, x, c);
3219 seen_disp_event(term);
3226 if (term->curs.x == term->cols) {
3228 term->wrapnext = TRUE;
3229 if (term->wrap && term->vt52_mode) {
3230 cline->lattr |= LATTR_WRAPPED;
3231 if (term->curs.y == term->marg_b)
3232 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3233 else if (term->curs.y < term->rows - 1)
3236 term->wrapnext = FALSE;
3239 seen_disp_event(term);
3245 * This state is virtually identical to SEEN_ESC, with the
3246 * exception that we have an OSC sequence in the pipeline,
3247 * and _if_ we see a backslash, we process it.
3251 term->termstate = TOPLEVEL;
3254 /* else fall through */
3256 if (c >= ' ' && c <= '/') {
3257 if (term->esc_query)
3258 term->esc_query = -1;
3260 term->esc_query = c;
3263 term->termstate = TOPLEVEL;
3264 switch (ANSI(c, term->esc_query)) {
3265 case '[': /* enter CSI mode */
3266 term->termstate = SEEN_CSI;
3267 term->esc_nargs = 1;
3268 term->esc_args[0] = ARG_DEFAULT;
3269 term->esc_query = FALSE;
3271 case ']': /* OSC: xterm escape sequences */
3272 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3273 compatibility(OTHER);
3274 term->termstate = SEEN_OSC;
3275 term->esc_args[0] = 0;
3277 case '7': /* DECSC: save cursor */
3278 compatibility(VT100);
3279 save_cursor(term, TRUE);
3281 case '8': /* DECRC: restore cursor */
3282 compatibility(VT100);
3283 save_cursor(term, FALSE);
3284 seen_disp_event(term);
3286 case '=': /* DECKPAM: Keypad application mode */
3287 compatibility(VT100);
3288 term->app_keypad_keys = TRUE;
3290 case '>': /* DECKPNM: Keypad numeric mode */
3291 compatibility(VT100);
3292 term->app_keypad_keys = FALSE;
3294 case 'D': /* IND: exactly equivalent to LF */
3295 compatibility(VT100);
3296 if (term->curs.y == term->marg_b)
3297 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3298 else if (term->curs.y < term->rows - 1)
3300 term->wrapnext = FALSE;
3301 seen_disp_event(term);
3303 case 'E': /* NEL: exactly equivalent to CR-LF */
3304 compatibility(VT100);
3306 if (term->curs.y == term->marg_b)
3307 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3308 else if (term->curs.y < term->rows - 1)
3310 term->wrapnext = FALSE;
3311 seen_disp_event(term);
3313 case 'M': /* RI: reverse index - backwards LF */
3314 compatibility(VT100);
3315 if (term->curs.y == term->marg_t)
3316 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3317 else if (term->curs.y > 0)
3319 term->wrapnext = FALSE;
3320 seen_disp_event(term);
3322 case 'Z': /* DECID: terminal type query */
3323 compatibility(VT100);
3325 ldisc_send(term->ldisc, term->id_string,
3326 strlen(term->id_string), 0);
3328 case 'c': /* RIS: restore power-on settings */
3329 compatibility(VT100);
3330 power_on(term, TRUE);
3331 if (term->ldisc) /* cause ldisc to notice changes */
3332 ldisc_send(term->ldisc, NULL, 0, 0);
3333 if (term->reset_132) {
3334 if (!term->no_remote_resize)
3335 request_resize(term->frontend, 80, term->rows);
3336 term->reset_132 = 0;
3338 if (term->scroll_on_disp)
3340 seen_disp_event(term);
3342 case 'H': /* HTS: set a tab */
3343 compatibility(VT100);
3344 term->tabs[term->curs.x] = TRUE;
3347 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3348 compatibility(VT100);
3354 for (i = 0; i < term->rows; i++) {
3355 ldata = scrlineptr(i);
3356 check_line_size(term, ldata);
3357 for (j = 0; j < term->cols; j++) {
3358 copy_termchar(ldata, j,
3359 &term->basic_erase_char);
3360 ldata->chars[j].chr = 'E';
3362 ldata->lattr = LATTR_NORM;
3364 if (term->scroll_on_disp)
3366 seen_disp_event(term);
3367 scrtop.x = scrtop.y = 0;
3369 scrbot.y = term->rows;
3370 check_selection(term, scrtop, scrbot);
3374 case ANSI('3', '#'):
3375 case ANSI('4', '#'):
3376 case ANSI('5', '#'):
3377 case ANSI('6', '#'):
3378 compatibility(VT100);
3383 switch (ANSI(c, term->esc_query)) {
3384 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3387 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3390 case ANSI('5', '#'): /* DECSWL: normal */
3391 nlattr = LATTR_NORM;
3393 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3394 nlattr = LATTR_WIDE;
3397 ldata = scrlineptr(term->curs.y);
3398 check_line_size(term, ldata);
3399 ldata->lattr = nlattr;
3402 /* GZD4: G0 designate 94-set */
3403 case ANSI('A', '('):
3404 compatibility(VT100);
3405 if (!term->no_remote_charset)
3406 term->cset_attr[0] = CSET_GBCHR;
3408 case ANSI('B', '('):
3409 compatibility(VT100);
3410 if (!term->no_remote_charset)
3411 term->cset_attr[0] = CSET_ASCII;
3413 case ANSI('0', '('):
3414 compatibility(VT100);
3415 if (!term->no_remote_charset)
3416 term->cset_attr[0] = CSET_LINEDRW;
3418 case ANSI('U', '('):
3419 compatibility(OTHER);
3420 if (!term->no_remote_charset)
3421 term->cset_attr[0] = CSET_SCOACS;
3423 /* G1D4: G1-designate 94-set */
3424 case ANSI('A', ')'):
3425 compatibility(VT100);
3426 if (!term->no_remote_charset)
3427 term->cset_attr[1] = CSET_GBCHR;
3429 case ANSI('B', ')'):
3430 compatibility(VT100);
3431 if (!term->no_remote_charset)
3432 term->cset_attr[1] = CSET_ASCII;
3434 case ANSI('0', ')'):
3435 compatibility(VT100);
3436 if (!term->no_remote_charset)
3437 term->cset_attr[1] = CSET_LINEDRW;
3439 case ANSI('U', ')'):
3440 compatibility(OTHER);
3441 if (!term->no_remote_charset)
3442 term->cset_attr[1] = CSET_SCOACS;
3444 /* DOCS: Designate other coding system */
3445 case ANSI('8', '%'): /* Old Linux code */
3446 case ANSI('G', '%'):
3447 compatibility(OTHER);
3448 if (!term->no_remote_charset)
3451 case ANSI('@', '%'):
3452 compatibility(OTHER);
3453 if (!term->no_remote_charset)
3459 term->termstate = TOPLEVEL; /* default */
3461 if (term->esc_nargs <= ARGS_MAX) {
3462 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3463 term->esc_args[term->esc_nargs - 1] = 0;
3464 term->esc_args[term->esc_nargs - 1] =
3465 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3467 term->termstate = SEEN_CSI;
3468 } else if (c == ';') {
3469 if (term->esc_nargs < ARGS_MAX)
3470 term->esc_args[term->esc_nargs++] = ARG_DEFAULT;
3471 term->termstate = SEEN_CSI;
3472 } else if (c < '@') {
3473 if (term->esc_query)
3474 term->esc_query = -1;
3476 term->esc_query = TRUE;
3478 term->esc_query = c;
3479 term->termstate = SEEN_CSI;
3481 switch (ANSI(c, term->esc_query)) {
3482 case 'A': /* CUU: move up N lines */
3483 move(term, term->curs.x,
3484 term->curs.y - def(term->esc_args[0], 1), 1);
3485 seen_disp_event(term);
3487 case 'e': /* VPR: move down N lines */
3488 compatibility(ANSI);
3490 case 'B': /* CUD: Cursor down */
3491 move(term, term->curs.x,
3492 term->curs.y + def(term->esc_args[0], 1), 1);
3493 seen_disp_event(term);
3495 case ANSI('c', '>'): /* DA: report xterm version */
3496 compatibility(OTHER);
3497 /* this reports xterm version 136 so that VIM can
3498 use the drag messages from the mouse reporting */
3500 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3502 case 'a': /* HPR: move right N cols */
3503 compatibility(ANSI);
3505 case 'C': /* CUF: Cursor right */
3506 move(term, term->curs.x + def(term->esc_args[0], 1),
3508 seen_disp_event(term);
3510 case 'D': /* CUB: move left N cols */
3511 move(term, term->curs.x - def(term->esc_args[0], 1),
3513 seen_disp_event(term);
3515 case 'E': /* CNL: move down N lines and CR */
3516 compatibility(ANSI);
3518 term->curs.y + def(term->esc_args[0], 1), 1);
3519 seen_disp_event(term);
3521 case 'F': /* CPL: move up N lines and CR */
3522 compatibility(ANSI);
3524 term->curs.y - def(term->esc_args[0], 1), 1);
3525 seen_disp_event(term);
3528 case '`': /* HPA: set horizontal posn */
3529 compatibility(ANSI);
3530 move(term, def(term->esc_args[0], 1) - 1,
3532 seen_disp_event(term);
3534 case 'd': /* VPA: set vertical posn */
3535 compatibility(ANSI);
3536 move(term, term->curs.x,
3537 ((term->dec_om ? term->marg_t : 0) +
3538 def(term->esc_args[0], 1) - 1),
3539 (term->dec_om ? 2 : 0));
3540 seen_disp_event(term);
3543 case 'f': /* HVP: set horz and vert posns at once */
3544 if (term->esc_nargs < 2)
3545 term->esc_args[1] = ARG_DEFAULT;
3546 move(term, def(term->esc_args[1], 1) - 1,
3547 ((term->dec_om ? term->marg_t : 0) +
3548 def(term->esc_args[0], 1) - 1),
3549 (term->dec_om ? 2 : 0));
3550 seen_disp_event(term);
3552 case 'J': /* ED: erase screen or parts of it */
3554 unsigned int i = def(term->esc_args[0], 0);
3556 /* Erase Saved Lines (xterm)
3557 * This follows Thomas Dickey's xterm. */
3563 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3566 if (term->scroll_on_disp)
3568 seen_disp_event(term);
3570 case 'K': /* EL: erase line or parts of it */
3572 unsigned int i = def(term->esc_args[0], 0) + 1;
3575 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3577 seen_disp_event(term);
3579 case 'L': /* IL: insert lines */
3580 compatibility(VT102);
3581 if (term->curs.y <= term->marg_b)
3582 scroll(term, term->curs.y, term->marg_b,
3583 -def(term->esc_args[0], 1), FALSE);
3584 seen_disp_event(term);
3586 case 'M': /* DL: delete lines */
3587 compatibility(VT102);
3588 if (term->curs.y <= term->marg_b)
3589 scroll(term, term->curs.y, term->marg_b,
3590 def(term->esc_args[0], 1),
3592 seen_disp_event(term);
3594 case '@': /* ICH: insert chars */
3595 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3596 compatibility(VT102);
3597 insch(term, def(term->esc_args[0], 1));
3598 seen_disp_event(term);
3600 case 'P': /* DCH: delete chars */
3601 compatibility(VT102);
3602 insch(term, -def(term->esc_args[0], 1));
3603 seen_disp_event(term);
3605 case 'c': /* DA: terminal type query */
3606 compatibility(VT100);
3607 /* This is the response for a VT102 */
3609 ldisc_send(term->ldisc, term->id_string,
3610 strlen(term->id_string), 0);
3612 case 'n': /* DSR: cursor position query */
3614 if (term->esc_args[0] == 6) {
3616 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3618 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3619 } else if (term->esc_args[0] == 5) {
3620 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3624 case 'h': /* SM: toggle modes to high */
3626 compatibility(VT100);
3629 for (i = 0; i < term->esc_nargs; i++)
3630 toggle_mode(term, term->esc_args[i],
3631 term->esc_query, TRUE);
3634 case 'i': /* MC: Media copy */
3636 compatibility(VT100);
3639 if (term->esc_nargs != 1) break;
3640 if (term->esc_args[0] == 5 &&
3641 (printer = conf_get_str(term->conf,
3642 CONF_printer))[0]) {
3643 term->printing = TRUE;
3644 term->only_printing = !term->esc_query;
3645 term->print_state = 0;
3646 term_print_setup(term, printer);
3647 } else if (term->esc_args[0] == 4 &&
3649 term_print_finish(term);
3653 case 'l': /* RM: toggle modes to low */
3655 compatibility(VT100);
3658 for (i = 0; i < term->esc_nargs; i++)
3659 toggle_mode(term, term->esc_args[i],
3660 term->esc_query, FALSE);
3663 case 'g': /* TBC: clear tabs */
3664 compatibility(VT100);
3665 if (term->esc_nargs == 1) {
3666 if (term->esc_args[0] == 0) {
3667 term->tabs[term->curs.x] = FALSE;
3668 } else if (term->esc_args[0] == 3) {
3670 for (i = 0; i < term->cols; i++)
3671 term->tabs[i] = FALSE;
3675 case 'r': /* DECSTBM: set scroll margins */
3676 compatibility(VT100);
3677 if (term->esc_nargs <= 2) {
3679 top = def(term->esc_args[0], 1) - 1;
3680 bot = (term->esc_nargs <= 1
3681 || term->esc_args[1] == 0 ?
3683 def(term->esc_args[1], term->rows)) - 1;
3684 if (bot >= term->rows)
3685 bot = term->rows - 1;
3686 /* VTTEST Bug 9 - if region is less than 2 lines
3687 * don't change region.
3689 if (bot - top > 0) {
3694 * I used to think the cursor should be
3695 * placed at the top of the newly marginned
3696 * area. Apparently not: VMS TPU falls over
3699 * Well actually it should for
3702 term->curs.y = (term->dec_om ?
3704 seen_disp_event(term);
3708 case 'm': /* SGR: set graphics rendition */
3711 * A VT100 without the AVO only had one
3712 * attribute, either underline or
3713 * reverse video depending on the
3714 * cursor type, this was selected by
3718 * This is sometimes DIM, eg on the
3721 * This is sometimes INVIS various ANSI.
3723 * This like 22 disables BOLD, DIM and INVIS
3725 * The ANSI colours appear on any
3726 * terminal that has colour (obviously)
3727 * but the interaction between sgr0 and
3728 * the colours varies but is usually
3729 * related to the background colour
3730 * erase item. The interaction between
3731 * colour attributes and the mono ones
3732 * is also very implementation
3735 * The 39 and 49 attributes are likely
3736 * to be unimplemented.
3739 for (i = 0; i < term->esc_nargs; i++) {
3740 switch (def(term->esc_args[i], 0)) {
3741 case 0: /* restore defaults */
3742 term->curr_attr = term->default_attr;
3744 case 1: /* enable bold */
3745 compatibility(VT100AVO);
3746 term->curr_attr |= ATTR_BOLD;
3748 case 21: /* (enable double underline) */
3749 compatibility(OTHER);
3750 case 4: /* enable underline */
3751 compatibility(VT100AVO);
3752 term->curr_attr |= ATTR_UNDER;
3754 case 5: /* enable blink */
3755 compatibility(VT100AVO);
3756 term->curr_attr |= ATTR_BLINK;
3758 case 6: /* SCO light bkgrd */
3759 compatibility(SCOANSI);
3760 term->blink_is_real = FALSE;
3761 term->curr_attr |= ATTR_BLINK;
3762 term_schedule_tblink(term);
3764 case 7: /* enable reverse video */
3765 term->curr_attr |= ATTR_REVERSE;
3767 case 10: /* SCO acs off */
3768 compatibility(SCOANSI);
3769 if (term->no_remote_charset) break;
3770 term->sco_acs = 0; break;
3771 case 11: /* SCO acs on */
3772 compatibility(SCOANSI);
3773 if (term->no_remote_charset) break;
3774 term->sco_acs = 1; break;
3775 case 12: /* SCO acs on, |0x80 */
3776 compatibility(SCOANSI);
3777 if (term->no_remote_charset) break;
3778 term->sco_acs = 2; break;
3779 case 22: /* disable bold */
3780 compatibility2(OTHER, VT220);
3781 term->curr_attr &= ~ATTR_BOLD;
3783 case 24: /* disable underline */
3784 compatibility2(OTHER, VT220);
3785 term->curr_attr &= ~ATTR_UNDER;
3787 case 25: /* disable blink */
3788 compatibility2(OTHER, VT220);
3789 term->curr_attr &= ~ATTR_BLINK;
3791 case 27: /* disable reverse video */
3792 compatibility2(OTHER, VT220);
3793 term->curr_attr &= ~ATTR_REVERSE;
3804 term->curr_attr &= ~ATTR_FGMASK;
3806 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3816 /* aixterm-style bright foreground */
3817 term->curr_attr &= ~ATTR_FGMASK;
3819 ((term->esc_args[i] - 90 + 8)
3822 case 39: /* default-foreground */
3823 term->curr_attr &= ~ATTR_FGMASK;
3824 term->curr_attr |= ATTR_DEFFG;
3835 term->curr_attr &= ~ATTR_BGMASK;
3837 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3847 /* aixterm-style bright background */
3848 term->curr_attr &= ~ATTR_BGMASK;
3850 ((term->esc_args[i] - 100 + 8)
3853 case 49: /* default-background */
3854 term->curr_attr &= ~ATTR_BGMASK;
3855 term->curr_attr |= ATTR_DEFBG;
3857 case 38: /* xterm 256-colour mode */
3858 if (i+2 < term->esc_nargs &&
3859 term->esc_args[i+1] == 5) {
3860 term->curr_attr &= ~ATTR_FGMASK;
3862 ((term->esc_args[i+2] & 0xFF)
3867 case 48: /* xterm 256-colour mode */
3868 if (i+2 < term->esc_nargs &&
3869 term->esc_args[i+1] == 5) {
3870 term->curr_attr &= ~ATTR_BGMASK;
3872 ((term->esc_args[i+2] & 0xFF)
3879 set_erase_char(term);
3882 case 's': /* save cursor */
3883 save_cursor(term, TRUE);
3885 case 'u': /* restore cursor */
3886 save_cursor(term, FALSE);
3887 seen_disp_event(term);
3889 case 't': /* DECSLPP: set page size - ie window height */
3891 * VT340/VT420 sequence DECSLPP, DEC only allows values
3892 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3893 * illegal values (eg first arg 1..9) for window changing
3896 if (term->esc_nargs <= 1
3897 && (term->esc_args[0] < 1 ||
3898 term->esc_args[0] >= 24)) {
3899 compatibility(VT340TEXT);
3900 if (!term->no_remote_resize)
3901 request_resize(term->frontend, term->cols,
3902 def(term->esc_args[0], 24));
3904 } else if (term->esc_nargs >= 1 &&
3905 term->esc_args[0] >= 1 &&
3906 term->esc_args[0] < 24) {
3907 compatibility(OTHER);
3909 switch (term->esc_args[0]) {
3913 set_iconic(term->frontend, FALSE);
3916 set_iconic(term->frontend, TRUE);
3919 if (term->esc_nargs >= 3) {
3920 if (!term->no_remote_resize)
3921 move_window(term->frontend,
3922 def(term->esc_args[1], 0),
3923 def(term->esc_args[2], 0));
3927 /* We should resize the window to a given
3928 * size in pixels here, but currently our
3929 * resizing code isn't healthy enough to
3934 set_zorder(term->frontend, TRUE);
3937 /* move to bottom */
3938 set_zorder(term->frontend, FALSE);
3941 refresh_window(term->frontend);
3944 if (term->esc_nargs >= 3) {
3945 if (!term->no_remote_resize)
3946 request_resize(term->frontend,
3947 def(term->esc_args[2], term->conf_width),
3948 def(term->esc_args[1], term->conf_height));
3952 if (term->esc_nargs >= 2)
3953 set_zoomed(term->frontend,
3959 ldisc_send(term->ldisc,
3960 is_iconic(term->frontend) ?
3961 "\033[2t" : "\033[1t", 4, 0);
3965 get_window_pos(term->frontend, &x, &y);
3966 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3967 ldisc_send(term->ldisc, buf, len, 0);
3972 get_window_pixels(term->frontend, &x, &y);
3973 len = sprintf(buf, "\033[4;%d;%dt", y, x);
3974 ldisc_send(term->ldisc, buf, len, 0);
3979 len = sprintf(buf, "\033[8;%d;%dt",
3980 term->rows, term->cols);
3981 ldisc_send(term->ldisc, buf, len, 0);
3986 * Hmmm. Strictly speaking we
3987 * should return `the size of the
3988 * screen in characters', but
3989 * that's not easy: (a) window
3990 * furniture being what it is it's
3991 * hard to compute, and (b) in
3992 * resize-font mode maximising the
3993 * window wouldn't change the
3994 * number of characters. *shrug*. I
3995 * think we'll ignore it for the
3996 * moment and see if anyone
3997 * complains, and then ask them
3998 * what they would like it to do.
4003 term->remote_qtitle_action != TITLE_NONE) {
4004 if(term->remote_qtitle_action == TITLE_REAL)
4005 p = get_window_title(term->frontend, TRUE);
4007 p = EMPTY_WINDOW_TITLE;
4009 ldisc_send(term->ldisc, "\033]L", 3, 0);
4010 ldisc_send(term->ldisc, p, len, 0);
4011 ldisc_send(term->ldisc, "\033\\", 2, 0);
4016 term->remote_qtitle_action != TITLE_NONE) {
4017 if(term->remote_qtitle_action == TITLE_REAL)
4018 p = get_window_title(term->frontend, FALSE);
4020 p = EMPTY_WINDOW_TITLE;
4022 ldisc_send(term->ldisc, "\033]l", 3, 0);
4023 ldisc_send(term->ldisc, p, len, 0);
4024 ldisc_send(term->ldisc, "\033\\", 2, 0);
4030 case 'S': /* SU: Scroll up */
4031 compatibility(SCOANSI);
4032 scroll(term, term->marg_t, term->marg_b,
4033 def(term->esc_args[0], 1), TRUE);
4034 term->wrapnext = FALSE;
4035 seen_disp_event(term);
4037 case 'T': /* SD: Scroll down */
4038 compatibility(SCOANSI);
4039 scroll(term, term->marg_t, term->marg_b,
4040 -def(term->esc_args[0], 1), TRUE);
4041 term->wrapnext = FALSE;
4042 seen_disp_event(term);
4044 case ANSI('|', '*'): /* DECSNLS */
4046 * Set number of lines on screen
4047 * VT420 uses VGA like hardware and can
4048 * support any size in reasonable range
4049 * (24..49 AIUI) with no default specified.
4051 compatibility(VT420);
4052 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
4053 if (!term->no_remote_resize)
4054 request_resize(term->frontend, term->cols,
4055 def(term->esc_args[0],
4056 term->conf_height));
4060 case ANSI('|', '$'): /* DECSCPP */
4062 * Set number of columns per page
4063 * Docs imply range is only 80 or 132, but
4066 compatibility(VT340TEXT);
4067 if (term->esc_nargs <= 1) {
4068 if (!term->no_remote_resize)
4069 request_resize(term->frontend,
4070 def(term->esc_args[0],
4076 case 'X': /* ECH: write N spaces w/o moving cursor */
4077 /* XXX VTTEST says this is vt220, vt510 manual
4079 compatibility(ANSIMIN);
4081 int n = def(term->esc_args[0], 1);
4083 int p = term->curs.x;
4084 termline *cline = scrlineptr(term->curs.y);
4086 if (n > term->cols - term->curs.x)
4087 n = term->cols - term->curs.x;
4088 cursplus = term->curs;
4090 check_boundary(term, term->curs.x, term->curs.y);
4091 check_boundary(term, term->curs.x+n, term->curs.y);
4092 check_selection(term, term->curs, cursplus);
4094 copy_termchar(cline, p++,
4096 seen_disp_event(term);
4099 case 'x': /* DECREQTPARM: report terminal characteristics */
4100 compatibility(VT100);
4103 int i = def(term->esc_args[0], 0);
4104 if (i == 0 || i == 1) {
4105 strcpy(buf, "\033[2;1;1;112;112;1;0x");
4107 ldisc_send(term->ldisc, buf, 20, 0);
4112 compatibility(OTHER);
4114 int i = def(term->esc_args[0], 1);
4115 pos old_curs = term->curs;
4117 for(;i>0 && term->curs.x>0; i--) {
4120 } while (term->curs.x >0 &&
4121 !term->tabs[term->curs.x]);
4123 check_selection(term, old_curs, term->curs);
4126 case ANSI('c', '='): /* Hide or Show Cursor */
4127 compatibility(SCOANSI);
4128 switch(term->esc_args[0]) {
4129 case 0: /* hide cursor */
4130 term->cursor_on = FALSE;
4132 case 1: /* restore cursor */
4133 term->big_cursor = FALSE;
4134 term->cursor_on = TRUE;
4136 case 2: /* block cursor */
4137 term->big_cursor = TRUE;
4138 term->cursor_on = TRUE;
4142 case ANSI('C', '='):
4144 * set cursor start on scanline esc_args[0] and
4145 * end on scanline esc_args[1].If you set
4146 * the bottom scan line to a value less than
4147 * the top scan line, the cursor will disappear.
4149 compatibility(SCOANSI);
4150 if (term->esc_nargs >= 2) {
4151 if (term->esc_args[0] > term->esc_args[1])
4152 term->cursor_on = FALSE;
4154 term->cursor_on = TRUE;
4157 case ANSI('D', '='):
4158 compatibility(SCOANSI);
4159 term->blink_is_real = FALSE;
4160 term_schedule_tblink(term);
4161 if (term->esc_args[0]>=1)
4162 term->curr_attr |= ATTR_BLINK;
4164 term->curr_attr &= ~ATTR_BLINK;
4166 case ANSI('E', '='):
4167 compatibility(SCOANSI);
4168 term->blink_is_real = (term->esc_args[0] >= 1);
4169 term_schedule_tblink(term);
4171 case ANSI('F', '='): /* set normal foreground */
4172 compatibility(SCOANSI);
4173 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
4175 (sco2ansicolour[term->esc_args[0] & 0x7] |
4176 (term->esc_args[0] & 0x8)) <<
4178 term->curr_attr &= ~ATTR_FGMASK;
4179 term->curr_attr |= colour;
4180 term->default_attr &= ~ATTR_FGMASK;
4181 term->default_attr |= colour;
4182 set_erase_char(term);
4185 case ANSI('G', '='): /* set normal background */
4186 compatibility(SCOANSI);
4187 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
4189 (sco2ansicolour[term->esc_args[0] & 0x7] |
4190 (term->esc_args[0] & 0x8)) <<
4192 term->curr_attr &= ~ATTR_BGMASK;
4193 term->curr_attr |= colour;
4194 term->default_attr &= ~ATTR_BGMASK;
4195 term->default_attr |= colour;
4196 set_erase_char(term);
4199 case ANSI('L', '='):
4200 compatibility(SCOANSI);
4201 term->use_bce = (term->esc_args[0] <= 0);
4202 set_erase_char(term);
4204 case ANSI('p', '"'): /* DECSCL: set compat level */
4206 * Allow the host to make this emulator a
4207 * 'perfect' VT102. This first appeared in
4208 * the VT220, but we do need to get back to
4209 * PuTTY mode so I won't check it.
4211 * The arg in 40..42,50 are a PuTTY extension.
4212 * The 2nd arg, 8bit vs 7bit is not checked.
4214 * Setting VT102 mode should also change
4215 * the Fkeys to generate PF* codes as a
4216 * real VT102 has no Fkeys. The VT220 does
4217 * this, F11..F13 become ESC,BS,LF other
4218 * Fkeys send nothing.
4220 * Note ESC c will NOT change this!
4223 switch (term->esc_args[0]) {
4225 term->compatibility_level &= ~TM_VTXXX;
4226 term->compatibility_level |= TM_VT102;
4229 term->compatibility_level &= ~TM_VTXXX;
4230 term->compatibility_level |= TM_VT220;
4234 if (term->esc_args[0] > 60 &&
4235 term->esc_args[0] < 70)
4236 term->compatibility_level |= TM_VTXXX;
4240 term->compatibility_level &= TM_VTXXX;
4243 term->compatibility_level = TM_PUTTY;
4246 term->compatibility_level = TM_SCOANSI;
4250 term->compatibility_level = TM_PUTTY;
4256 /* Change the response to CSI c */
4257 if (term->esc_args[0] == 50) {
4260 strcpy(term->id_string, "\033[?");
4261 for (i = 1; i < term->esc_nargs; i++) {
4263 strcat(term->id_string, ";");
4264 sprintf(lbuf, "%d", term->esc_args[i]);
4265 strcat(term->id_string, lbuf);
4267 strcat(term->id_string, "c");
4270 /* Is this a good idea ?
4271 * Well we should do a soft reset at this point ...
4273 if (!has_compat(VT420) && has_compat(VT100)) {
4274 if (!term->no_remote_resize) {
4275 if (term->reset_132)
4276 request_resize(132, 24);
4278 request_resize(80, 24);
4286 term->osc_w = FALSE;
4288 case 'P': /* Linux palette sequence */
4289 term->termstate = SEEN_OSC_P;
4290 term->osc_strlen = 0;
4292 case 'R': /* Linux palette reset */
4293 palette_reset(term->frontend);
4294 term_invalidate(term);
4295 term->termstate = TOPLEVEL;
4297 case 'W': /* word-set */
4298 term->termstate = SEEN_OSC_W;
4311 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4315 * Grotty hack to support xterm and DECterm title
4316 * sequences concurrently.
4318 if (term->esc_args[0] == 2) {
4319 term->esc_args[0] = 1;
4322 /* else fall through */
4324 term->termstate = OSC_STRING;
4325 term->osc_strlen = 0;
4330 * This OSC stuff is EVIL. It takes just one character to get into
4331 * sysline mode and it's not initially obvious how to get out.
4332 * So I've added CR and LF as string aborts.
4333 * This shouldn't effect compatibility as I believe embedded
4334 * control characters are supposed to be interpreted (maybe?)
4335 * and they don't display anything useful anyway.
4339 if (c == '\012' || c == '\015') {
4340 term->termstate = TOPLEVEL;
4341 } else if (c == 0234 || c == '\007') {
4343 * These characters terminate the string; ST and BEL
4344 * terminate the sequence and trigger instant
4345 * processing of it, whereas ESC goes back to SEEN_ESC
4346 * mode unless it is followed by \, in which case it is
4347 * synonymous with ST in the first place.
4350 term->termstate = TOPLEVEL;
4351 } else if (c == '\033')
4352 term->termstate = OSC_MAYBE_ST;
4353 else if (term->osc_strlen < OSC_STR_MAX)
4354 term->osc_string[term->osc_strlen++] = (char)c;
4358 int max = (term->osc_strlen == 0 ? 21 : 15);
4360 if ((int)c >= '0' && (int)c <= '9')
4362 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4364 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4367 term->termstate = TOPLEVEL;
4370 term->osc_string[term->osc_strlen++] = val;
4371 if (term->osc_strlen >= 7) {
4372 palette_set(term->frontend, term->osc_string[0],
4373 term->osc_string[1] * 16 + term->osc_string[2],
4374 term->osc_string[3] * 16 + term->osc_string[4],
4375 term->osc_string[5] * 16 + term->osc_string[6]);
4376 term_invalidate(term);
4377 term->termstate = TOPLEVEL;
4393 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4396 term->termstate = OSC_STRING;
4397 term->osc_strlen = 0;
4401 term->termstate = TOPLEVEL;
4402 seen_disp_event(term);
4405 move(term, term->curs.x, term->curs.y - 1, 1);
4408 move(term, term->curs.x, term->curs.y + 1, 1);
4411 move(term, term->curs.x + 1, term->curs.y, 1);
4414 move(term, term->curs.x - 1, term->curs.y, 1);
4417 * From the VT100 Manual
4418 * NOTE: The special graphics characters in the VT100
4419 * are different from those in the VT52
4421 * From VT102 manual:
4422 * 137 _ Blank - Same
4423 * 140 ` Reserved - Humm.
4424 * 141 a Solid rectangle - Similar
4425 * 142 b 1/ - Top half of fraction for the
4426 * 143 c 3/ - subscript numbers below.
4429 * 146 f Degrees - Same
4430 * 147 g Plus or minus - Same
4432 * 151 i Ellipsis (dots)
4435 * 154 l Bar at scan 0
4436 * 155 m Bar at scan 1
4437 * 156 n Bar at scan 2
4438 * 157 o Bar at scan 3 - Similar
4439 * 160 p Bar at scan 4 - Similar
4440 * 161 q Bar at scan 5 - Similar
4441 * 162 r Bar at scan 6 - Same
4442 * 163 s Bar at scan 7 - Similar
4457 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4460 term->cset_attr[term->cset = 0] = CSET_ASCII;
4463 move(term, 0, 0, 0);
4466 if (term->curs.y == 0)
4467 scroll(term, 0, term->rows - 1, -1, TRUE);
4468 else if (term->curs.y > 0)
4470 term->wrapnext = FALSE;
4473 erase_lots(term, FALSE, FALSE, TRUE);
4474 if (term->scroll_on_disp)
4478 erase_lots(term, TRUE, FALSE, TRUE);
4482 /* XXX Print cursor line */
4485 /* XXX Start controller mode */
4488 /* XXX Stop controller mode */
4492 term->termstate = VT52_Y1;
4496 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4499 term->app_keypad_keys = TRUE;
4502 term->app_keypad_keys = FALSE;
4505 /* XXX This should switch to VT100 mode not current or default
4506 * VT mode. But this will only have effect in a VT220+
4509 term->vt52_mode = FALSE;
4510 term->blink_is_real = term->blinktext;
4511 term_schedule_tblink(term);
4515 /* XXX Enter auto print mode */
4518 /* XXX Exit auto print mode */
4521 /* XXX Print screen */
4527 /* compatibility(ATARI) */
4528 move(term, 0, 0, 0);
4529 erase_lots(term, FALSE, FALSE, TRUE);
4530 if (term->scroll_on_disp)
4534 /* compatibility(ATARI) */
4535 if (term->curs.y <= term->marg_b)
4536 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4539 /* compatibility(ATARI) */
4540 if (term->curs.y <= term->marg_b)
4541 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4544 /* compatibility(ATARI) */
4545 term->termstate = VT52_FG;
4548 /* compatibility(ATARI) */
4549 term->termstate = VT52_BG;
4552 /* compatibility(ATARI) */
4553 erase_lots(term, FALSE, TRUE, FALSE);
4554 if (term->scroll_on_disp)
4558 /* compatibility(ATARI) */
4559 term->cursor_on = TRUE;
4562 /* compatibility(ATARI) */
4563 term->cursor_on = FALSE;
4565 /* case 'j': Save cursor position - broken on ST */
4566 /* case 'k': Restore cursor position */
4568 /* compatibility(ATARI) */
4569 erase_lots(term, TRUE, TRUE, TRUE);
4571 term->wrapnext = FALSE;
4574 /* compatibility(ATARI) */
4575 erase_lots(term, TRUE, TRUE, FALSE);
4578 /* compatibility(ATARI) */
4579 term->curr_attr |= ATTR_REVERSE;
4582 /* compatibility(ATARI) */
4583 term->curr_attr &= ~ATTR_REVERSE;
4585 case 'v': /* wrap Autowrap on - Wyse style */
4586 /* compatibility(ATARI) */
4589 case 'w': /* Autowrap off */
4590 /* compatibility(ATARI) */
4595 /* compatibility(OTHER) */
4596 term->vt52_bold = FALSE;
4597 term->curr_attr = ATTR_DEFAULT;
4598 set_erase_char(term);
4601 /* compatibility(VI50) */
4602 term->curr_attr |= ATTR_UNDER;
4605 /* compatibility(VI50) */
4606 term->curr_attr &= ~ATTR_UNDER;
4609 /* compatibility(VI50) */
4610 term->vt52_bold = TRUE;
4611 term->curr_attr |= ATTR_BOLD;
4614 /* compatibility(VI50) */
4615 term->vt52_bold = FALSE;
4616 term->curr_attr &= ~ATTR_BOLD;
4622 term->termstate = VT52_Y2;
4623 move(term, term->curs.x, c - ' ', 0);
4626 term->termstate = TOPLEVEL;
4627 move(term, c - ' ', term->curs.y, 0);
4632 term->termstate = TOPLEVEL;
4633 term->curr_attr &= ~ATTR_FGMASK;
4634 term->curr_attr &= ~ATTR_BOLD;
4635 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4636 set_erase_char(term);
4639 term->termstate = TOPLEVEL;
4640 term->curr_attr &= ~ATTR_BGMASK;
4641 term->curr_attr &= ~ATTR_BLINK;
4642 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4643 set_erase_char(term);
4646 default: break; /* placate gcc warning about enum use */
4648 if (term->selstate != NO_SELECTION) {
4649 pos cursplus = term->curs;
4651 check_selection(term, term->curs, cursplus);
4655 term_print_flush(term);
4657 logflush(term->logctx);
4661 * To prevent having to run the reasonably tricky bidi algorithm
4662 * too many times, we maintain a cache of the last lineful of data
4663 * fed to the algorithm on each line of the display.
4665 static int term_bidi_cache_hit(Terminal *term, int line,
4666 termchar *lbefore, int width)
4670 if (!term->pre_bidi_cache)
4671 return FALSE; /* cache doesn't even exist yet! */
4673 if (line >= term->bidi_cache_size)
4674 return FALSE; /* cache doesn't have this many lines */
4676 if (!term->pre_bidi_cache[line].chars)
4677 return FALSE; /* cache doesn't contain _this_ line */
4679 if (term->pre_bidi_cache[line].width != width)
4680 return FALSE; /* line is wrong width */
4682 for (i = 0; i < width; i++)
4683 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4684 return FALSE; /* line doesn't match cache */
4686 return TRUE; /* it didn't match. */
4689 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4690 termchar *lafter, bidi_char *wcTo,
4691 int width, int size)
4695 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4696 int j = term->bidi_cache_size;
4697 term->bidi_cache_size = line+1;
4698 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4699 term->bidi_cache_size,
4700 struct bidi_cache_entry);
4701 term->post_bidi_cache = sresize(term->post_bidi_cache,
4702 term->bidi_cache_size,
4703 struct bidi_cache_entry);
4704 while (j < term->bidi_cache_size) {
4705 term->pre_bidi_cache[j].chars =
4706 term->post_bidi_cache[j].chars = NULL;
4707 term->pre_bidi_cache[j].width =
4708 term->post_bidi_cache[j].width = -1;
4709 term->pre_bidi_cache[j].forward =
4710 term->post_bidi_cache[j].forward = NULL;
4711 term->pre_bidi_cache[j].backward =
4712 term->post_bidi_cache[j].backward = NULL;
4717 sfree(term->pre_bidi_cache[line].chars);
4718 sfree(term->post_bidi_cache[line].chars);
4719 sfree(term->post_bidi_cache[line].forward);
4720 sfree(term->post_bidi_cache[line].backward);
4722 term->pre_bidi_cache[line].width = width;
4723 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4724 term->post_bidi_cache[line].width = width;
4725 term->post_bidi_cache[line].chars = snewn(size, termchar);
4726 term->post_bidi_cache[line].forward = snewn(width, int);
4727 term->post_bidi_cache[line].backward = snewn(width, int);
4729 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4730 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4731 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4732 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4734 for (i = 0; i < width; i++) {
4735 int p = wcTo[i].index;
4737 assert(0 <= p && p < width);
4739 term->post_bidi_cache[line].backward[i] = p;
4740 term->post_bidi_cache[line].forward[p] = i;
4745 * Prepare the bidi information for a screen line. Returns the
4746 * transformed list of termchars, or NULL if no transformation at
4747 * all took place (because bidi is disabled). If return was
4748 * non-NULL, auxiliary information such as the forward and reverse
4749 * mappings of permutation position are available in
4750 * term->post_bidi_cache[scr_y].*.
4752 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4758 /* Do Arabic shaping and bidi. */
4759 if(!term->bidi || !term->arabicshaping) {
4761 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4763 if (term->wcFromTo_size < term->cols) {
4764 term->wcFromTo_size = term->cols;
4765 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4767 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4771 for(it=0; it<term->cols ; it++)
4773 unsigned long uc = (ldata->chars[it].chr);
4775 switch (uc & CSET_MASK) {
4777 if (!term->rawcnp) {
4778 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4782 uc = term->ucsdata->unitab_line[uc & 0xFF];
4785 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4788 switch (uc & CSET_MASK) {
4790 uc = term->ucsdata->unitab_font[uc & 0xFF];
4793 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4797 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4799 term->wcFrom[it].index = it;
4803 do_bidi(term->wcFrom, term->cols);
4805 /* this is saved iff done from inside the shaping */
4806 if(!term->bidi && term->arabicshaping)
4807 for(it=0; it<term->cols; it++)
4808 term->wcTo[it] = term->wcFrom[it];
4810 if(!term->arabicshaping)
4811 do_shape(term->wcFrom, term->wcTo, term->cols);
4813 if (term->ltemp_size < ldata->size) {
4814 term->ltemp_size = ldata->size;
4815 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4819 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4821 for(it=0; it<term->cols ; it++)
4823 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4824 if (term->ltemp[it].cc_next)
4825 term->ltemp[it].cc_next -=
4826 it - term->wcTo[it].index;
4828 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4829 term->ltemp[it].chr = term->wcTo[it].wc;
4831 term_bidi_cache_store(term, scr_y, ldata->chars,
4832 term->ltemp, term->wcTo,
4833 term->cols, ldata->size);
4835 lchars = term->ltemp;
4837 lchars = term->post_bidi_cache[scr_y].chars;
4847 * Given a context, update the window. Out of paranoia, we don't
4848 * allow WM_PAINT responses to do scrolling optimisations.
4850 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4852 int i, j, our_curs_y, our_curs_x;
4857 #ifdef OPTIMISE_SCROLL
4858 struct scrollregion *sr;
4859 #endif /* OPTIMISE_SCROLL */
4863 ch = snewn(chlen, wchar_t);
4865 newline = snewn(term->cols, termchar);
4867 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4870 * screen array, disptop, scrtop,
4872 * blinkpc, blink_is_real, tblinker,
4873 * curs.y, curs.x, cblinker, blink_cur, cursor_on, has_focus, wrapnext
4876 /* Has the cursor position or type changed ? */
4877 if (term->cursor_on) {
4878 if (term->has_focus) {
4879 if (term->cblinker || !term->blink_cur)
4880 cursor = TATTR_ACTCURS;
4884 cursor = TATTR_PASCURS;
4886 cursor |= TATTR_RIGHTCURS;
4889 our_curs_y = term->curs.y - term->disptop;
4892 * Adjust the cursor position:
4894 * - in the case where it's resting on the right-hand half
4895 * of a CJK wide character. xterm's behaviour here,
4896 * which seems adequate to me, is to display the cursor
4897 * covering the _whole_ character, exactly as if it were
4898 * one space to the left.
4900 termline *ldata = lineptr(term->curs.y);
4903 our_curs_x = term->curs.x;
4905 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4906 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4908 lchars = ldata->chars;
4910 if (our_curs_x > 0 &&
4911 lchars[our_curs_x].chr == UCSWIDE)
4918 * If the cursor is not where it was last time we painted, and
4919 * its previous position is visible on screen, invalidate its
4920 * previous position.
4922 if (term->dispcursy >= 0 &&
4923 (term->curstype != cursor ||
4924 term->dispcursy != our_curs_y ||
4925 term->dispcursx != our_curs_x)) {
4926 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4929 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4930 dispcurs[-1].attr |= ATTR_INVALID;
4931 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4932 dispcurs[1].attr |= ATTR_INVALID;
4933 dispcurs->attr |= ATTR_INVALID;
4937 term->dispcursx = term->dispcursy = -1;
4939 #ifdef OPTIMISE_SCROLL
4941 sr = term->scrollhead;
4943 struct scrollregion *next = sr->next;
4944 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4948 term->scrollhead = term->scrolltail = NULL;
4949 #endif /* OPTIMISE_SCROLL */
4951 /* The normal screen data */
4952 for (i = 0; i < term->rows; i++) {
4955 int dirty_line, dirty_run, selected;
4956 unsigned long attr = 0, cset = 0;
4959 int last_run_dirty = 0;
4960 int laststart, dirtyrect;
4963 scrpos.y = i + term->disptop;
4964 ldata = lineptr(scrpos.y);
4966 /* Do Arabic shaping and bidi. */
4967 lchars = term_bidi_line(term, ldata, i);
4969 backward = term->post_bidi_cache[i].backward;
4971 lchars = ldata->chars;
4976 * First loop: work along the line deciding what we want
4977 * each character cell to look like.
4979 for (j = 0; j < term->cols; j++) {
4980 unsigned long tattr, tchar;
4981 termchar *d = lchars + j;
4982 scrpos.x = backward ? backward[j] : j;
4987 if (!term->ansi_colour)
4988 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4989 ATTR_DEFFG | ATTR_DEFBG;
4991 if (!term->xterm_256_colour) {
4993 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4994 if (colour >= 16 && colour < 256)
4995 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4996 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4997 if (colour >= 16 && colour < 256)
4998 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
5001 switch (tchar & CSET_MASK) {
5003 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
5006 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
5009 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
5012 if (j < term->cols-1 && d[1].chr == UCSWIDE)
5015 /* Video reversing things */
5016 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
5017 if (term->seltype == LEXICOGRAPHIC)
5018 selected = (posle(term->selstart, scrpos) &&
5019 poslt(scrpos, term->selend));
5021 selected = (posPle(term->selstart, scrpos) &&
5022 posPlt(scrpos, term->selend));
5026 ^ (selected ? ATTR_REVERSE : 0));
5028 /* 'Real' blinking ? */
5029 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
5030 if (term->has_focus && term->tblinker) {
5031 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
5033 tattr &= ~ATTR_BLINK;
5037 * Check the font we'll _probably_ be using to see if
5038 * the character is wide when we don't want it to be.
5040 if (tchar != term->disptext[i]->chars[j].chr ||
5041 tattr != (term->disptext[i]->chars[j].attr &~
5042 (ATTR_NARROW | DATTR_MASK))) {
5043 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
5044 tattr |= ATTR_NARROW;
5045 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
5046 tattr |= ATTR_NARROW;
5048 if (i == our_curs_y && j == our_curs_x) {
5050 term->curstype = cursor;
5051 term->dispcursx = j;
5052 term->dispcursy = i;
5056 newline[j].attr = tattr;
5057 newline[j].chr = tchar;
5058 /* Combining characters are still read from lchars */
5059 newline[j].cc_next = 0;
5063 * Now loop over the line again, noting where things have
5066 * During this loop, we keep track of where we last saw
5067 * DATTR_STARTRUN. Any mismatch automatically invalidates
5068 * _all_ of the containing run that was last printed: that
5069 * is, any rectangle that was drawn in one go in the
5070 * previous update should be either left completely alone
5071 * or overwritten in its entirety. This, along with the
5072 * expectation that front ends clip all text runs to their
5073 * bounding rectangle, should solve any possible problems
5074 * with fonts that overflow their character cells.
5078 for (j = 0; j < term->cols; j++) {
5079 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
5084 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
5085 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
5086 != newline[j].attr) {
5090 for (k = laststart; k < j; k++)
5091 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
5098 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5102 * Finally, loop once more and actually do the drawing.
5104 dirty_run = dirty_line = (ldata->lattr !=
5105 term->disptext[i]->lattr);
5106 term->disptext[i]->lattr = ldata->lattr;
5108 for (j = 0; j < term->cols; j++) {
5109 unsigned long tattr, tchar;
5110 int break_run, do_copy;
5111 termchar *d = lchars + j;
5113 tattr = newline[j].attr;
5114 tchar = newline[j].chr;
5116 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
5119 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
5121 #ifdef USES_VTLINE_HACK
5122 /* Special hack for VT100 Linedraw glyphs */
5123 if ((tchar >= 0x23BA && tchar <= 0x23BD) ||
5124 (j > 0 && (newline[j-1].chr >= 0x23BA &&
5125 newline[j-1].chr <= 0x23BD)))
5130 * Separate out sequences of characters that have the
5131 * same CSET, if that CSET is a magic one.
5133 if (CSET_OF(tchar) != cset)
5137 * Break on both sides of any combined-character cell.
5139 if (d->cc_next != 0 ||
5140 (j > 0 && d[-1].cc_next != 0))
5143 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
5144 if (term->disptext[i]->chars[j].chr == tchar &&
5145 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
5147 else if (!dirty_run && ccount == 1)
5152 if ((dirty_run || last_run_dirty) && ccount > 0) {
5153 do_text(ctx, start, i, ch, ccount, attr,
5155 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5156 do_cursor(ctx, start, i, ch, ccount, attr,
5162 cset = CSET_OF(tchar);
5163 if (term->ucsdata->dbcs_screenfont)
5164 last_run_dirty = dirty_run;
5165 dirty_run = dirty_line;
5169 if (!termchars_equal_override(&term->disptext[i]->chars[j],
5175 if (ccount+2 > chlen) {
5176 chlen = ccount + 256;
5177 ch = sresize(ch, chlen, wchar_t);
5180 #ifdef PLATFORM_IS_UTF16
5181 if (tchar > 0x10000 && tchar < 0x110000) {
5182 ch[ccount++] = (wchar_t) HIGH_SURROGATE_OF(tchar);
5183 ch[ccount++] = (wchar_t) LOW_SURROGATE_OF(tchar);
5185 #endif /* PLATFORM_IS_UTF16 */
5186 ch[ccount++] = (wchar_t) tchar;
5191 while (dd->cc_next) {
5192 unsigned long schar;
5197 switch (schar & CSET_MASK) {
5199 schar = term->ucsdata->unitab_line[schar & 0xFF];
5202 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
5205 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
5209 if (ccount+2 > chlen) {
5210 chlen = ccount + 256;
5211 ch = sresize(ch, chlen, wchar_t);
5214 #ifdef PLATFORM_IS_UTF16
5215 if (schar > 0x10000 && schar < 0x110000) {
5216 ch[ccount++] = (wchar_t) HIGH_SURROGATE_OF(schar);
5217 ch[ccount++] = (wchar_t) LOW_SURROGATE_OF(schar);
5219 #endif /* PLATFORM_IS_UTF16 */
5220 ch[ccount++] = (wchar_t) schar;
5223 attr |= TATTR_COMBINING;
5227 copy_termchar(term->disptext[i], j, d);
5228 term->disptext[i]->chars[j].chr = tchar;
5229 term->disptext[i]->chars[j].attr = tattr;
5231 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
5234 /* If it's a wide char step along to the next one. */
5235 if (tattr & ATTR_WIDE) {
5236 if (++j < term->cols) {
5239 * By construction above, the cursor should not
5240 * be on the right-hand half of this character.
5243 assert(!(i == our_curs_y && j == our_curs_x));
5244 if (!termchars_equal(&term->disptext[i]->chars[j], d))
5246 copy_termchar(term->disptext[i], j, d);
5250 if (dirty_run && ccount > 0) {
5251 do_text(ctx, start, i, ch, ccount, attr,
5253 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5254 do_cursor(ctx, start, i, ch, ccount, attr,
5266 * Invalidate the whole screen so it will be repainted in full.
5268 void term_invalidate(Terminal *term)
5272 for (i = 0; i < term->rows; i++)
5273 for (j = 0; j < term->cols; j++)
5274 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5276 term_schedule_update(term);
5280 * Paint the window in response to a WM_PAINT message.
5282 void term_paint(Terminal *term, Context ctx,
5283 int left, int top, int right, int bottom, int immediately)
5286 if (left < 0) left = 0;
5287 if (top < 0) top = 0;
5288 if (right >= term->cols) right = term->cols-1;
5289 if (bottom >= term->rows) bottom = term->rows-1;
5291 for (i = top; i <= bottom && i < term->rows; i++) {
5292 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
5293 for (j = left; j <= right && j < term->cols; j++)
5294 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5296 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
5297 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5301 do_paint (term, ctx, FALSE);
5303 term_schedule_update(term);
5308 * Attempt to scroll the scrollback. The second parameter gives the
5309 * position we want to scroll to; the first is +1 to denote that
5310 * this position is relative to the beginning of the scrollback, -1
5311 * to denote it is relative to the end, and 0 to denote that it is
5312 * relative to the current position.
5314 void term_scroll(Terminal *term, int rel, int where)
5316 int sbtop = -sblines(term);
5317 #ifdef OPTIMISE_SCROLL
5318 int olddisptop = term->disptop;
5320 #endif /* OPTIMISE_SCROLL */
5322 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5323 if (term->disptop < sbtop)
5324 term->disptop = sbtop;
5325 if (term->disptop > 0)
5328 #ifdef OPTIMISE_SCROLL
5329 shift = (term->disptop - olddisptop);
5330 if (shift < term->rows && shift > -term->rows)
5331 scroll_display(term, 0, term->rows - 1, shift);
5332 #endif /* OPTIMISE_SCROLL */
5337 * Scroll the scrollback to centre it on the beginning or end of the
5338 * current selection, if any.
5340 void term_scroll_to_selection(Terminal *term, int which_end)
5344 int sbtop = -sblines(term);
5346 if (term->selstate != SELECTED)
5349 target = term->selend;
5351 target = term->selstart;
5353 y = target.y - term->rows/2;
5358 term_scroll(term, -1, y);
5362 * Helper routine for clipme(): growing buffer.
5365 int buflen; /* amount of allocated space in textbuf/attrbuf */
5366 int bufpos; /* amount of actual data */
5367 wchar_t *textbuf; /* buffer for copied text */
5368 wchar_t *textptr; /* = textbuf + bufpos (current insertion point) */
5369 int *attrbuf; /* buffer for copied attributes */
5370 int *attrptr; /* = attrbuf + bufpos */
5373 static void clip_addchar(clip_workbuf *b, wchar_t chr, int attr)
5375 if (b->bufpos >= b->buflen) {
5377 b->textbuf = sresize(b->textbuf, b->buflen, wchar_t);
5378 b->textptr = b->textbuf + b->bufpos;
5379 b->attrbuf = sresize(b->attrbuf, b->buflen, int);
5380 b->attrptr = b->attrbuf + b->bufpos;
5382 *b->textptr++ = chr;
5383 *b->attrptr++ = attr;
5387 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5395 buf.textptr = buf.textbuf = snewn(buf.buflen, wchar_t);
5396 buf.attrptr = buf.attrbuf = snewn(buf.buflen, int);
5398 old_top_x = top.x; /* needed for rect==1 */
5400 while (poslt(top, bottom)) {
5402 termline *ldata = lineptr(top.y);
5406 * nlpos will point at the maximum position on this line we
5407 * should copy up to. So we start it at the end of the
5411 nlpos.x = term->cols;
5414 * ... move it backwards if there's unused space at the end
5415 * of the line (and also set `nl' if this is the case,
5416 * because in normal selection mode this means we need a
5417 * newline at the end)...
5419 if (!(ldata->lattr & LATTR_WRAPPED)) {
5421 IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5422 !ldata->chars[nlpos.x - 1].cc_next &&
5425 if (poslt(nlpos, bottom))
5427 } else if (ldata->lattr & LATTR_WRAPPED2) {
5428 /* Ignore the last char on the line in a WRAPPED2 line. */
5433 * ... and then clip it to the terminal x coordinate if
5434 * we're doing rectangular selection. (In this case we
5435 * still did the above, so that copying e.g. the right-hand
5436 * column from a table doesn't fill with spaces on the
5440 if (nlpos.x > bottom.x)
5442 nl = (top.y < bottom.y);
5445 while (poslt(top, bottom) && poslt(top, nlpos)) {
5448 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5450 wchar_t cbuf[16], *p;
5454 if (ldata->chars[x].chr == UCSWIDE) {
5460 int uc = ldata->chars[x].chr;
5461 attr = ldata->chars[x].attr;
5463 switch (uc & CSET_MASK) {
5465 if (!term->rawcnp) {
5466 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5470 uc = term->ucsdata->unitab_line[uc & 0xFF];
5473 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5476 switch (uc & CSET_MASK) {
5478 uc = term->ucsdata->unitab_font[uc & 0xFF];
5481 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5485 c = (uc & ~CSET_MASK);
5486 #ifdef PLATFORM_IS_UTF16
5487 if (uc > 0x10000 && uc < 0x110000) {
5488 cbuf[0] = 0xD800 | ((uc - 0x10000) >> 10);
5489 cbuf[1] = 0xDC00 | ((uc - 0x10000) & 0x3FF);
5498 if (DIRECT_FONT(uc)) {
5499 if (c >= ' ' && c != 0x7F) {
5503 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5505 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5506 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5510 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5514 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5521 for (p = cbuf; *p; p++)
5522 clip_addchar(&buf, *p, attr);
5524 if (ldata->chars[x].cc_next)
5525 x += ldata->chars[x].cc_next;
5533 for (i = 0; i < sel_nl_sz; i++)
5534 clip_addchar(&buf, sel_nl[i], 0);
5537 top.x = rect ? old_top_x : 0;
5541 #if SELECTION_NUL_TERMINATED
5542 clip_addchar(&buf, 0, 0);
5544 /* Finally, transfer all that to the clipboard. */
5545 write_clip(term->frontend, buf.textbuf, buf.attrbuf, buf.bufpos, desel);
5550 void term_copyall(Terminal *term)
5554 tree234 *screen = term->screen;
5555 top.y = -sblines(term);
5557 bottom.y = find_last_nonempty_line(term, screen);
5558 bottom.x = term->cols;
5559 clipme(term, top, bottom, 0, TRUE);
5563 * The wordness array is mainly for deciding the disposition of the
5564 * US-ASCII characters.
5566 static int wordtype(Terminal *term, int uc)
5569 int start, end, ctype;
5571 static const struct ucsword ucs_words[] = {
5577 0x037e, 0x037e, 1}, /* Greek question mark */
5579 0x0387, 0x0387, 1}, /* Greek ano teleia */
5581 0x055a, 0x055f, 1}, /* Armenian punctuation */
5583 0x0589, 0x0589, 1}, /* Armenian full stop */
5585 0x0700, 0x070d, 1}, /* Syriac punctuation */
5587 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5589 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5591 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5593 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5595 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5597 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5599 0x2000, 0x200a, 0}, /* Various spaces */
5601 0x2070, 0x207f, 2}, /* superscript */
5603 0x2080, 0x208f, 2}, /* subscript */
5605 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5607 0x3000, 0x3000, 0}, /* ideographic space */
5609 0x3001, 0x3020, 1}, /* ideographic punctuation */
5611 0x303f, 0x309f, 3}, /* Hiragana */
5613 0x30a0, 0x30ff, 3}, /* Katakana */
5615 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5617 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5619 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5621 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5623 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5625 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5627 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5629 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5631 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5635 const struct ucsword *wptr;
5637 switch (uc & CSET_MASK) {
5639 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5642 uc = term->ucsdata->unitab_line[uc & 0xFF];
5645 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5648 switch (uc & CSET_MASK) {
5650 uc = term->ucsdata->unitab_font[uc & 0xFF];
5653 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5657 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5658 * fail as there's such a thing as a double width space. :-(
5660 if (term->ucsdata->dbcs_screenfont &&
5661 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5665 return term->wordness[uc];
5667 for (wptr = ucs_words; wptr->start; wptr++) {
5668 if (uc >= wptr->start && uc <= wptr->end)
5676 * Spread the selection outwards according to the selection mode.
5678 static pos sel_spread_half(Terminal *term, pos p, int dir)
5682 int topy = -sblines(term);
5684 ldata = lineptr(p.y);
5686 switch (term->selmode) {
5689 * In this mode, every character is a separate unit, except
5690 * for runs of spaces at the end of a non-wrapping line.
5692 if (!(ldata->lattr & LATTR_WRAPPED)) {
5693 termchar *q = ldata->chars + term->cols;
5694 while (q > ldata->chars &&
5695 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5697 if (q == ldata->chars + term->cols)
5699 if (p.x >= q - ldata->chars)
5700 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5705 * In this mode, the units are maximal runs of characters
5706 * whose `wordness' has the same value.
5708 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5711 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5712 term->cols-1 : term->cols);
5713 if (p.x < maxcols-1) {
5714 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5719 if (p.y+1 < term->rows &&
5720 (ldata->lattr & LATTR_WRAPPED)) {
5722 ldata2 = lineptr(p.y+1);
5723 if (wordtype(term, UCSGET(ldata2->chars, 0))
5740 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5749 ldata2 = lineptr(p.y-1);
5750 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5751 term->cols-1 : term->cols);
5752 if (ldata2->lattr & LATTR_WRAPPED) {
5753 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5771 * In this mode, every line is a unit.
5773 p.x = (dir == -1 ? 0 : term->cols - 1);
5781 static void sel_spread(Terminal *term)
5783 if (term->seltype == LEXICOGRAPHIC) {
5784 term->selstart = sel_spread_half(term, term->selstart, -1);
5785 decpos(term->selend);
5786 term->selend = sel_spread_half(term, term->selend, +1);
5787 incpos(term->selend);
5791 static void term_paste_callback(void *vterm)
5793 Terminal *term = (Terminal *)vterm;
5795 if (term->paste_len == 0)
5798 while (term->paste_pos < term->paste_len) {
5800 while (n + term->paste_pos < term->paste_len) {
5801 if (term->paste_buffer[term->paste_pos + n++] == '\015')
5805 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
5806 term->paste_pos += n;
5808 if (term->paste_pos < term->paste_len) {
5809 queue_toplevel_callback(term_paste_callback, term);
5813 sfree(term->paste_buffer);
5814 term->paste_buffer = NULL;
5815 term->paste_len = 0;
5818 void term_do_paste(Terminal *term)
5823 get_clip(term->frontend, &data, &len);
5824 if (data && len > 0) {
5827 term_seen_key_event(term); /* pasted data counts */
5829 if (term->paste_buffer)
5830 sfree(term->paste_buffer);
5831 term->paste_pos = term->paste_len = 0;
5832 term->paste_buffer = snewn(len + 12, wchar_t);
5834 if (term->bracketed_paste) {
5835 memcpy(term->paste_buffer, L"\033[200~", 6 * sizeof(wchar_t));
5836 term->paste_len += 6;
5840 while (p < data + len) {
5841 while (p < data + len &&
5842 !(p <= data + len - sel_nl_sz &&
5843 !memcmp(p, sel_nl, sizeof(sel_nl))))
5848 for (i = 0; i < p - q; i++) {
5849 term->paste_buffer[term->paste_len++] = q[i];
5853 if (p <= data + len - sel_nl_sz &&
5854 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5855 term->paste_buffer[term->paste_len++] = '\015';
5861 if (term->bracketed_paste) {
5862 memcpy(term->paste_buffer + term->paste_len,
5863 L"\033[201~", 6 * sizeof(wchar_t));
5864 term->paste_len += 6;
5867 /* Assume a small paste will be OK in one go. */
5868 if (term->paste_len < 256) {
5870 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5871 if (term->paste_buffer)
5872 sfree(term->paste_buffer);
5873 term->paste_buffer = 0;
5874 term->paste_pos = term->paste_len = 0;
5877 get_clip(term->frontend, NULL, NULL);
5879 queue_toplevel_callback(term_paste_callback, term);
5882 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5883 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5887 int raw_mouse = (term->xterm_mouse &&
5888 !term->no_mouse_rep &&
5889 !(term->mouse_override && shift));
5890 int default_seltype;
5894 if (a == MA_DRAG && !raw_mouse)
5895 term_scroll(term, 0, -1);
5897 if (y >= term->rows) {
5899 if (a == MA_DRAG && !raw_mouse)
5900 term_scroll(term, 0, +1);
5909 if (x >= term->cols)
5912 selpoint.y = y + term->disptop;
5913 ldata = lineptr(selpoint.y);
5915 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5919 * Transform x through the bidi algorithm to find the _logical_
5920 * click point from the physical one.
5922 if (term_bidi_line(term, ldata, y) != NULL) {
5923 x = term->post_bidi_cache[y].backward[x];
5930 * If we're in the middle of a selection operation, we ignore raw
5931 * mouse mode until it's done (we must have been not in raw mouse
5932 * mode when it started).
5933 * This makes use of Shift for selection reliable, and avoids the
5934 * host seeing mouse releases for which they never saw corresponding
5938 (term->selstate != ABOUT_TO) && (term->selstate != DRAGGING)) {
5939 int encstate = 0, r, c, wheel;
5947 encstate = 0x00; /* left button down */
5962 case MBT_WHEEL_DOWN:
5970 /* For mouse wheel buttons, we only ever expect to see
5971 * MA_CLICK actions, and we don't try to keep track of
5972 * the buttons being 'pressed' (since without matching
5973 * click/release pairs that's pointless). */
5978 if (term->xterm_mouse == 1)
5983 /* If multiple extensions are enabled, the xterm 1006 is used, so it's okay to check for only that */
5984 if (!term->xterm_extended_mouse)
5986 term->mouse_is_down = 0;
5989 if (term->mouse_is_down == braw)
5991 term->mouse_is_down = braw;
6003 /* Check the extensions in decreasing order of preference. Encoding the release event above assumes that 1006 comes first. */
6004 if (term->xterm_extended_mouse) {
6005 len = sprintf(abuf, "\033[<%d;%d;%d%c", encstate, c, r, a == MA_RELEASE ? 'm' : 'M');
6006 } else if (term->urxvt_extended_mouse) {
6007 len = sprintf(abuf, "\033[%d;%d;%dM", encstate + 32, c, r);
6008 } else if (c <= 223 && r <= 223) {
6009 len = sprintf(abuf, "\033[M%c%c%c", encstate + 32, c + 32, r + 32);
6011 ldisc_send(term->ldisc, abuf, len, 0);
6017 * Set the selection type (rectangular or normal) at the start
6018 * of a selection attempt, from the state of Alt.
6020 if (!alt ^ !term->rect_select)
6021 default_seltype = RECTANGULAR;
6023 default_seltype = LEXICOGRAPHIC;
6025 if (term->selstate == NO_SELECTION) {
6026 term->seltype = default_seltype;
6029 if (bcooked == MBT_SELECT && a == MA_CLICK) {
6031 term->selstate = ABOUT_TO;
6032 term->seltype = default_seltype;
6033 term->selanchor = selpoint;
6034 term->selmode = SM_CHAR;
6035 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
6037 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
6038 term->selstate = DRAGGING;
6039 term->selstart = term->selanchor = selpoint;
6040 term->selend = term->selstart;
6041 incpos(term->selend);
6043 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
6044 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
6045 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
6047 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
6048 term->selstate == SELECTED) {
6049 if (term->seltype == LEXICOGRAPHIC) {
6051 * For normal selection, we extend by moving
6052 * whichever end of the current selection is closer
6055 if (posdiff(selpoint, term->selstart) <
6056 posdiff(term->selend, term->selstart) / 2) {
6057 term->selanchor = term->selend;
6058 decpos(term->selanchor);
6060 term->selanchor = term->selstart;
6064 * For rectangular selection, we have a choice of
6065 * _four_ places to put selanchor and selpoint: the
6066 * four corners of the selection.
6068 if (2*selpoint.x < term->selstart.x + term->selend.x)
6069 term->selanchor.x = term->selend.x-1;
6071 term->selanchor.x = term->selstart.x;
6073 if (2*selpoint.y < term->selstart.y + term->selend.y)
6074 term->selanchor.y = term->selend.y;
6076 term->selanchor.y = term->selstart.y;
6078 term->selstate = DRAGGING;
6080 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
6081 term->selanchor = selpoint;
6082 term->selstate = DRAGGING;
6083 if (term->seltype == LEXICOGRAPHIC) {
6085 * For normal selection, we set (selstart,selend) to
6086 * (selpoint,selanchor) in some order.
6088 if (poslt(selpoint, term->selanchor)) {
6089 term->selstart = selpoint;
6090 term->selend = term->selanchor;
6091 incpos(term->selend);
6093 term->selstart = term->selanchor;
6094 term->selend = selpoint;
6095 incpos(term->selend);
6099 * For rectangular selection, we may need to
6100 * interchange x and y coordinates (if the user has
6101 * dragged in the -x and +y directions, or vice versa).
6103 term->selstart.x = min(term->selanchor.x, selpoint.x);
6104 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
6105 term->selstart.y = min(term->selanchor.y, selpoint.y);
6106 term->selend.y = max(term->selanchor.y, selpoint.y);
6109 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
6111 if (term->selstate == DRAGGING) {
6113 * We've completed a selection. We now transfer the
6114 * data to the clipboard.
6116 clipme(term, term->selstart, term->selend,
6117 (term->seltype == RECTANGULAR), FALSE);
6118 term->selstate = SELECTED;
6120 term->selstate = NO_SELECTION;
6121 } else if (bcooked == MBT_PASTE
6123 #if MULTICLICK_ONLY_EVENT
6124 || a == MA_2CLK || a == MA_3CLK
6127 request_paste(term->frontend);
6131 * Since terminal output is suppressed during drag-selects, we
6132 * should make sure to write any pending output if one has just
6135 if (term->selstate != DRAGGING)
6140 int format_arrow_key(char *buf, Terminal *term, int xkey, int ctrl)
6144 if (term->vt52_mode)
6145 p += sprintf((char *) p, "\x1B%c", xkey);
6147 int app_flg = (term->app_cursor_keys && !term->no_applic_c);
6150 * RDB: VT100 & VT102 manuals both state the app cursor
6151 * keys only work if the app keypad is on.
6153 * SGT: That may well be true, but xterm disagrees and so
6154 * does at least one application, so I've #if'ed this out
6155 * and the behaviour is back to PuTTY's original: app
6156 * cursor and app keypad are independently switchable
6157 * modes. If anyone complains about _this_ I'll have to
6158 * put in a configurable option.
6160 if (!term->app_keypad_keys)
6163 /* Useful mapping of Ctrl-arrows */
6168 p += sprintf((char *) p, "\x1BO%c", xkey);
6170 p += sprintf((char *) p, "\x1B[%c", xkey);
6176 void term_nopaste(Terminal *term)
6178 if (term->paste_len == 0)
6180 sfree(term->paste_buffer);
6181 term->paste_buffer = NULL;
6182 term->paste_len = 0;
6185 static void deselect(Terminal *term)
6187 term->selstate = NO_SELECTION;
6188 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6191 void term_deselect(Terminal *term)
6197 * Since terminal output is suppressed during drag-selects, we
6198 * should make sure to write any pending output if one has just
6201 if (term->selstate != DRAGGING)
6205 int term_ldisc(Terminal *term, int option)
6207 if (option == LD_ECHO)
6208 return term->term_echoing;
6209 if (option == LD_EDIT)
6210 return term->term_editing;
6214 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6216 bufchain_add(&term->inbuf, data, len);
6218 if (!term->in_term_out) {
6219 term->in_term_out = TRUE;
6220 term_reset_cblink(term);
6222 * During drag-selects, we do not process terminal input,
6223 * because the user will want the screen to hold still to
6226 if (term->selstate != DRAGGING)
6228 term->in_term_out = FALSE;
6232 * term_out() always completely empties inbuf. Therefore,
6233 * there's no reason at all to return anything other than zero
6234 * from this function, because there _can't_ be a question of
6235 * the remote side needing to wait until term_out() has cleared
6238 * This is a slightly suboptimal way to deal with SSH-2 - in
6239 * principle, the window mechanism would allow us to continue
6240 * to accept data on forwarded ports and X connections even
6241 * while the terminal processing was going slowly - but we
6242 * can't do the 100% right thing without moving the terminal
6243 * processing into a separate thread, and that might hurt
6244 * portability. So we manage stdout buffering the old SSH-1 way:
6245 * if the terminal processing goes slowly, the whole SSH
6246 * connection stops accepting data until it's ready.
6248 * In practice, I can't imagine this causing serious trouble.
6254 * Write untrusted data to the terminal.
6255 * The only control character that should be honoured is \n (which
6256 * will behave as a CRLF).
6258 int term_data_untrusted(Terminal *term, const char *data, int len)
6261 /* FIXME: more sophisticated checking? */
6262 for (i = 0; i < len; i++) {
6263 if (data[i] == '\n')
6264 term_data(term, 1, "\r\n", 2);
6265 else if (data[i] & 0x60)
6266 term_data(term, 1, data + i, 1);
6268 return 0; /* assumes that term_data() always returns 0 */
6271 void term_provide_logctx(Terminal *term, void *logctx)
6273 term->logctx = logctx;
6276 void term_set_focus(Terminal *term, int has_focus)
6278 term->has_focus = has_focus;
6279 term_schedule_cblink(term);
6283 * Provide "auto" settings for remote tty modes, suitable for an
6284 * application with a terminal window.
6286 char *term_get_ttymode(Terminal *term, const char *mode)
6289 if (strcmp(mode, "ERASE") == 0) {
6290 val = term->bksp_is_delete ? "^?" : "^H";
6292 /* FIXME: perhaps we should set ONLCR based on lfhascr as well? */
6293 /* FIXME: or ECHO and friends based on local echo state? */
6297 struct term_userpass_state {
6299 int done_prompt; /* printed out prompt yet? */
6300 size_t pos; /* cursor position */
6304 * Process some terminal data in the course of username/password
6307 int term_get_userpass_input(Terminal *term, prompts_t *p,
6308 unsigned char *in, int inlen)
6310 struct term_userpass_state *s = (struct term_userpass_state *)p->data;
6313 * First call. Set some stuff up.
6315 p->data = s = snew(struct term_userpass_state);
6318 /* We only print the `name' caption if we have to... */
6319 if (p->name_reqd && p->name) {
6320 size_t l = strlen(p->name);
6321 term_data_untrusted(term, p->name, l);
6322 if (p->name[l-1] != '\n')
6323 term_data_untrusted(term, "\n", 1);
6325 /* ...but we always print any `instruction'. */
6326 if (p->instruction) {
6327 size_t l = strlen(p->instruction);
6328 term_data_untrusted(term, p->instruction, l);
6329 if (p->instruction[l-1] != '\n')
6330 term_data_untrusted(term, "\n", 1);
6333 * Zero all the results, in case we abort half-way through.
6337 for (i = 0; i < (int)p->n_prompts; i++)
6338 prompt_set_result(p->prompts[i], "");
6342 while (s->curr_prompt < p->n_prompts) {
6344 prompt_t *pr = p->prompts[s->curr_prompt];
6345 int finished_prompt = 0;
6347 if (!s->done_prompt) {
6348 term_data_untrusted(term, pr->prompt, strlen(pr->prompt));
6353 /* Breaking out here ensures that the prompt is printed even
6354 * if we're now waiting for user data. */
6355 if (!in || !inlen) break;
6357 /* FIXME: should we be using local-line-editing code instead? */
6358 while (!finished_prompt && inlen) {
6364 term_data(term, 0, "\r\n", 2);
6365 prompt_ensure_result_size(pr, s->pos + 1);
6366 pr->result[s->pos] = '\0';
6367 /* go to next prompt, if any */
6370 finished_prompt = 1; /* break out */
6376 term_data(term, 0, "\b \b", 3);
6382 while (s->pos > 0) {
6384 term_data(term, 0, "\b \b", 3);
6390 /* Immediate abort. */
6391 term_data(term, 0, "\r\n", 2);
6394 return 0; /* user abort */
6397 * This simplistic check for printability is disabled
6398 * when we're doing password input, because some people
6399 * have control characters in their passwords.
6401 if (!pr->echo || (c >= ' ' && c <= '~') ||
6402 ((unsigned char) c >= 160)) {
6403 prompt_ensure_result_size(pr, s->pos + 1);
6404 pr->result[s->pos++] = c;
6406 term_data(term, 0, &c, 1);
6414 if (s->curr_prompt < p->n_prompts) {
6415 return -1; /* more data required */
6419 return +1; /* all done */