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 do_paint(Terminal *, Context, int);
102 static void erase_lots(Terminal *, int, int, int);
103 static int find_last_nonempty_line(Terminal *, tree234 *);
104 static void swap_screen(Terminal *, int, int, int);
105 static void update_sbar(Terminal *);
106 static void deselect(Terminal *);
107 static void term_print_finish(Terminal *);
108 static void scroll(Terminal *, int, int, int, int);
109 #ifdef OPTIMISE_SCROLL
110 static void scroll_display(Terminal *, int, int, int);
111 #endif /* OPTIMISE_SCROLL */
112 static void term_resume_pasting(Terminal *term);
113 static void term_paste_callback(void *vterm);
114 static void term_paste_queue(Terminal *term, int timed);
116 static termline *newline(Terminal *term, int cols, int bce)
121 line = snew(termline);
122 line->chars = snewn(cols, termchar);
123 for (j = 0; j < cols; j++)
124 line->chars[j] = (bce ? term->erase_char : term->basic_erase_char);
125 line->cols = line->size = cols;
126 line->lattr = LATTR_NORM;
127 line->temporary = FALSE;
133 static void freeline(termline *line)
141 static void unlineptr(termline *line)
149 * Diagnostic function: verify that a termline has a correct
150 * combining character structure.
152 * This is a performance-intensive check, so it's no longer enabled
155 static void cc_check(termline *line)
157 unsigned char *flags;
160 assert(line->size >= line->cols);
162 flags = snewn(line->size, unsigned char);
164 for (i = 0; i < line->size; i++)
165 flags[i] = (i < line->cols);
167 for (i = 0; i < line->cols; i++) {
169 while (line->chars[j].cc_next) {
170 j += line->chars[j].cc_next;
171 assert(j >= line->cols && j < line->size);
180 assert(j >= line->cols && j < line->size);
183 if (line->chars[j].cc_next)
184 j += line->chars[j].cc_next;
191 for (i = 0; i < line->size; i++)
192 j += (flags[i] != 0);
194 assert(j == line->size);
201 * Add a combining character to a character cell.
203 static void add_cc(termline *line, int col, unsigned long chr)
207 assert(col >= 0 && col < line->cols);
210 * Start by extending the cols array if the free list is empty.
212 if (!line->cc_free) {
214 line->size += 16 + (line->size - line->cols) / 2;
215 line->chars = sresize(line->chars, line->size, termchar);
217 while (n < line->size) {
218 if (n+1 < line->size)
219 line->chars[n].cc_next = 1;
221 line->chars[n].cc_next = 0;
227 * Now walk the cc list of the cell in question.
229 while (line->chars[col].cc_next)
230 col += line->chars[col].cc_next;
233 * `col' now points at the last cc currently in this cell; so
234 * we simply add another one.
236 newcc = line->cc_free;
237 if (line->chars[newcc].cc_next)
238 line->cc_free = newcc + line->chars[newcc].cc_next;
241 line->chars[newcc].cc_next = 0;
242 line->chars[newcc].chr = chr;
243 line->chars[col].cc_next = newcc - col;
251 * Clear the combining character list in a character cell.
253 static void clear_cc(termline *line, int col)
255 int oldfree, origcol = col;
257 assert(col >= 0 && col < line->cols);
259 if (!line->chars[col].cc_next)
260 return; /* nothing needs doing */
262 oldfree = line->cc_free;
263 line->cc_free = col + line->chars[col].cc_next;
264 while (line->chars[col].cc_next)
265 col += line->chars[col].cc_next;
267 line->chars[col].cc_next = oldfree - col;
269 line->chars[col].cc_next = 0;
271 line->chars[origcol].cc_next = 0;
279 * Compare two character cells for equality. Special case required
280 * in do_paint() where we override what we expect the chr and attr
283 static int termchars_equal_override(termchar *a, termchar *b,
284 unsigned long bchr, unsigned long battr)
289 if ((a->attr &~ DATTR_MASK) != (battr &~ DATTR_MASK))
291 while (a->cc_next || b->cc_next) {
292 if (!a->cc_next || !b->cc_next)
293 return FALSE; /* one cc-list ends, other does not */
296 if (a->chr != b->chr)
302 static int termchars_equal(termchar *a, termchar *b)
304 return termchars_equal_override(a, b, b->chr, b->attr);
308 * Copy a character cell. (Requires a pointer to the destination
309 * termline, so as to access its free list.)
311 static void copy_termchar(termline *destline, int x, termchar *src)
313 clear_cc(destline, x);
315 destline->chars[x] = *src; /* copy everything except cc-list */
316 destline->chars[x].cc_next = 0; /* and make sure this is zero */
318 while (src->cc_next) {
320 add_cc(destline, x, src->chr);
329 * Move a character cell within its termline.
331 static void move_termchar(termline *line, termchar *dest, termchar *src)
333 /* First clear the cc list from the original char, just in case. */
334 clear_cc(line, dest - line->chars);
336 /* Move the character cell and adjust its cc_next. */
337 *dest = *src; /* copy everything except cc-list */
339 dest->cc_next = src->cc_next - (dest-src);
341 /* Ensure the original cell doesn't have a cc list. */
350 * Compress and decompress a termline into an RLE-based format for
351 * storing in scrollback. (Since scrollback almost never needs to
352 * be modified and exists in huge quantities, this is a sensible
353 * tradeoff, particularly since it allows us to continue adding
354 * features to the main termchar structure without proportionally
355 * bloating the terminal emulator's memory footprint unless those
356 * features are in constant use.)
362 static void add(struct buf *b, unsigned char c)
364 if (b->len >= b->size) {
365 b->size = (b->len * 3 / 2) + 512;
366 b->data = sresize(b->data, b->size, unsigned char);
368 b->data[b->len++] = c;
370 static int get(struct buf *b)
372 return b->data[b->len++];
374 static void makerle(struct buf *b, termline *ldata,
375 void (*makeliteral)(struct buf *b, termchar *c,
376 unsigned long *state))
378 int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2;
379 termchar *c = ldata->chars;
380 unsigned long state = 0, oldstate;
387 prevlen = prevpos = 0;
392 makeliteral(b, c++, &state);
393 thislen = b->len - thispos;
394 if (thislen == prevlen &&
395 !memcmp(b->data + prevpos, b->data + thispos, thislen)) {
397 * This literal precisely matches the previous one.
398 * Turn it into a run if it's worthwhile.
400 * With one-byte literals, it costs us two bytes to
401 * encode a run, plus another byte to write the header
402 * to resume normal output; so a three-element run is
403 * neutral, and anything beyond that is unconditionally
404 * worthwhile. With two-byte literals or more, even a
407 if (thislen > 1 || prev2) {
411 * It's worth encoding a run. Start at prevpos,
412 * unless hdrsize==0 in which case we can back up
413 * another one and start by overwriting hdrpos.
416 hdrsize--; /* remove the literal at prevpos */
420 prevpos -= prevlen;/* and possibly another one */
424 assert(prevpos == hdrpos + 1);
426 b->len = prevpos+prevlen;
428 memmove(b->data + prevpos+1, b->data + prevpos, prevlen);
430 b->len = prevpos+prevlen+1;
432 * Terminate the previous run of ordinary
435 assert(hdrsize >= 1 && hdrsize <= 128);
436 b->data[hdrpos] = hdrsize - 1;
439 runlen = prev2 ? 3 : 2;
441 while (n > 0 && runlen < 129) {
445 makeliteral(b, c, &state);
446 tmplen = b->len - tmppos;
448 if (tmplen != thislen ||
449 memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) {
451 break; /* run over */
456 assert(runlen >= 2 && runlen <= 129);
457 b->data[runpos] = runlen + 0x80 - 2;
462 /* And ensure this run doesn't interfere with the next. */
463 prevlen = prevpos = 0;
469 * Just flag that the previous two literals were
470 * identical, in case we find a third identical one
471 * we want to turn into a run.
484 * This character isn't (yet) part of a run. Add it to
488 if (hdrsize == 128) {
489 b->data[hdrpos] = hdrsize - 1;
493 prevlen = prevpos = 0;
502 assert(hdrsize <= 128);
503 b->data[hdrpos] = hdrsize - 1;
508 static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state)
511 * My encoding for characters is UTF-8-like, in that it stores
512 * 7-bit ASCII in one byte and uses high-bit-set bytes as
513 * introducers to indicate a longer sequence. However, it's
514 * unlike UTF-8 in that it doesn't need to be able to
515 * resynchronise, and therefore I don't want to waste two bits
516 * per byte on having recognisable continuation characters.
517 * Also I don't want to rule out the possibility that I may one
518 * day use values 0x80000000-0xFFFFFFFF for interesting
519 * purposes, so unlike UTF-8 I need a full 32-bit range.
520 * Accordingly, here is my encoding:
522 * 00000000-0000007F: 0xxxxxxx (but see below)
523 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
524 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
525 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
526 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
528 * (`Z' is like `x' but is always going to be zero since the
529 * values I'm encoding don't go above 2^32. In principle the
530 * five-byte form of the encoding could extend to 2^35, and
531 * there could be six-, seven-, eight- and nine-byte forms as
532 * well to allow up to 64-bit values to be encoded. But that's
533 * completely unnecessary for these purposes!)
535 * The encoding as written above would be very simple, except
536 * that 7-bit ASCII can occur in several different ways in the
537 * terminal data; sometimes it crops up in the D800 page
538 * (CSET_ASCII) but at other times it's in the 0000 page (real
539 * Unicode). Therefore, this encoding is actually _stateful_:
540 * the one-byte encoding of 00-7F actually indicates `reuse the
541 * upper three bytes of the last character', and to encode an
542 * absolute value of 00-7F you need to use the two-byte form
545 if ((c->chr & ~0x7F) == *state) {
546 add(b, (unsigned char)(c->chr & 0x7F));
547 } else if (c->chr < 0x4000) {
548 add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80));
549 add(b, (unsigned char)(c->chr & 0xFF));
550 } else if (c->chr < 0x200000) {
551 add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0));
552 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
553 add(b, (unsigned char)(c->chr & 0xFF));
554 } else if (c->chr < 0x10000000) {
555 add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0));
556 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
557 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
558 add(b, (unsigned char)(c->chr & 0xFF));
561 add(b, (unsigned char)((c->chr >> 24) & 0xFF));
562 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
563 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
564 add(b, (unsigned char)(c->chr & 0xFF));
566 *state = c->chr & ~0xFF;
568 static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state)
571 * My encoding for attributes is 16-bit-granular and assumes
572 * that the top bit of the word is never required. I either
573 * store a two-byte value with the top bit clear (indicating
574 * just that value), or a four-byte value with the top bit set
575 * (indicating the same value with its top bit clear).
577 * However, first I permute the bits of the attribute value, so
578 * that the eight bits of colour (four in each of fg and bg)
579 * which are never non-zero unless xterm 256-colour mode is in
580 * use are placed higher up the word than everything else. This
581 * ensures that attribute values remain 16-bit _unless_ the
582 * user uses extended colour.
584 unsigned attr, colourbits;
588 assert(ATTR_BGSHIFT > ATTR_FGSHIFT);
590 colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF;
592 colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF;
594 attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) |
595 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
596 attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) |
597 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
599 attr |= (colourbits << (32-9));
602 add(b, (unsigned char)((attr >> 8) & 0xFF));
603 add(b, (unsigned char)(attr & 0xFF));
605 add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80));
606 add(b, (unsigned char)((attr >> 16) & 0xFF));
607 add(b, (unsigned char)((attr >> 8) & 0xFF));
608 add(b, (unsigned char)(attr & 0xFF));
611 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
614 * For combining characters, I just encode a bunch of ordinary
615 * chars using makeliteral_chr, and terminate with a \0
616 * character (which I know won't come up as a combining char
619 * I don't use the stateful encoding in makeliteral_chr.
621 unsigned long zstate;
630 makeliteral_chr(b, c, &zstate);
635 makeliteral_chr(b, &z, &zstate);
638 static termline *decompressline(unsigned char *data, int *bytes_used);
640 static unsigned char *compressline(termline *ldata)
642 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
645 * First, store the column count, 7 bits at a time, least
646 * significant `digit' first, with the high bit set on all but
652 add(b, (unsigned char)((n & 0x7F) | 0x80));
655 add(b, (unsigned char)(n));
659 * Next store the lattrs; same principle.
662 int n = ldata->lattr;
664 add(b, (unsigned char)((n & 0x7F) | 0x80));
667 add(b, (unsigned char)(n));
671 * Now we store a sequence of separate run-length encoded
672 * fragments, each containing exactly as many symbols as there
673 * are columns in the ldata.
675 * All of these have a common basic format:
677 * - a byte 00-7F indicates that X+1 literals follow it
678 * - a byte 80-FF indicates that a single literal follows it
679 * and expects to be repeated (X-0x80)+2 times.
681 * The format of the `literals' varies between the fragments.
683 makerle(b, ldata, makeliteral_chr);
684 makerle(b, ldata, makeliteral_attr);
685 makerle(b, ldata, makeliteral_cc);
688 * Diagnostics: ensure that the compressed data really does
689 * decompress to the right thing.
691 * This is a bit performance-heavy for production code.
694 #ifndef CHECK_SB_COMPRESSION
700 #ifdef DIAGNOSTIC_SB_COMPRESSION
701 for (i = 0; i < b->len; i++) {
702 printf(" %02x ", b->data[i]);
707 dcl = decompressline(b->data, &dused);
708 assert(b->len == dused);
709 assert(ldata->cols == dcl->cols);
710 assert(ldata->lattr == dcl->lattr);
711 for (i = 0; i < ldata->cols; i++)
712 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
714 #ifdef DIAGNOSTIC_SB_COMPRESSION
715 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
716 ldata->cols, 4 * ldata->cols, dused,
717 (double)dused / (4 * ldata->cols));
723 #endif /* TERM_CC_DIAGS */
726 * Trim the allocated memory so we don't waste any, and return.
728 return sresize(b->data, b->len, unsigned char);
731 static void readrle(struct buf *b, termline *ldata,
732 void (*readliteral)(struct buf *b, termchar *c,
733 termline *ldata, unsigned long *state))
736 unsigned long state = 0;
738 while (n < ldata->cols) {
744 int pos = b->len, count = hdr + 2 - 0x80;
746 assert(n < ldata->cols);
748 readliteral(b, ldata->chars + n, ldata, &state);
752 /* Just a sequence of consecutive literals. */
756 assert(n < ldata->cols);
757 readliteral(b, ldata->chars + n, ldata, &state);
763 assert(n == ldata->cols);
765 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
766 unsigned long *state)
771 * 00000000-0000007F: 0xxxxxxx
772 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
773 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
774 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
775 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
780 c->chr = byte | *state;
781 } else if (byte < 0xC0) {
782 c->chr = (byte &~ 0xC0) << 8;
784 } else if (byte < 0xE0) {
785 c->chr = (byte &~ 0xE0) << 16;
786 c->chr |= get(b) << 8;
788 } else if (byte < 0xF0) {
789 c->chr = (byte &~ 0xF0) << 24;
790 c->chr |= get(b) << 16;
791 c->chr |= get(b) << 8;
794 assert(byte == 0xF0);
795 c->chr = get(b) << 24;
796 c->chr |= get(b) << 16;
797 c->chr |= get(b) << 8;
800 *state = c->chr & ~0xFF;
802 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
803 unsigned long *state)
805 unsigned val, attr, colourbits;
817 colourbits = (val >> (32-9)) & 0xFF;
818 attr = (val & ((1<<(32-9))-1));
820 attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) |
821 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
822 attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) |
823 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
825 attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4);
826 attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4);
830 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
831 unsigned long *state)
834 unsigned long zstate;
835 int x = c - ldata->chars;
841 readliteral_chr(b, &n, ldata, &zstate);
844 add_cc(ldata, x, n.chr);
848 static termline *decompressline(unsigned char *data, int *bytes_used)
850 int ncols, byte, shift;
851 struct buf buffer, *b = &buffer;
858 * First read in the column count.
863 ncols |= (byte & 0x7F) << shift;
865 } while (byte & 0x80);
868 * Now create the output termline.
870 ldata = snew(termline);
871 ldata->chars = snewn(ncols, termchar);
872 ldata->cols = ldata->size = ncols;
873 ldata->temporary = TRUE;
877 * We must set all the cc pointers in ldata->chars to 0 right
878 * now, so that cc diagnostics that verify the integrity of the
879 * whole line will make sense while we're in the middle of
884 for (i = 0; i < ldata->cols; i++)
885 ldata->chars[i].cc_next = 0;
889 * Now read in the lattr.
891 ldata->lattr = shift = 0;
894 ldata->lattr |= (byte & 0x7F) << shift;
896 } while (byte & 0x80);
899 * Now we read in each of the RLE streams in turn.
901 readrle(b, ldata, readliteral_chr);
902 readrle(b, ldata, readliteral_attr);
903 readrle(b, ldata, readliteral_cc);
905 /* Return the number of bytes read, for diagnostic purposes. */
907 *bytes_used = b->len;
913 * Resize a line to make it `cols' columns wide.
915 static void resizeline(Terminal *term, termline *line, int cols)
919 if (line->cols != cols) {
921 oldcols = line->cols;
924 * This line is the wrong length, which probably means it
925 * hasn't been accessed since a resize. Resize it now.
927 * First, go through all the characters that will be thrown
928 * out in the resize (if we're shrinking the line) and
929 * return their cc lists to the cc free list.
931 for (i = cols; i < oldcols; i++)
935 * If we're shrinking the line, we now bodily move the
936 * entire cc section from where it started to where it now
937 * needs to be. (We have to do this before the resize, so
938 * that the data we're copying is still there. However, if
939 * we're expanding, we have to wait until _after_ the
940 * resize so that the space we're copying into is there.)
943 memmove(line->chars + cols, line->chars + oldcols,
944 (line->size - line->cols) * TSIZE);
947 * Now do the actual resize, leaving the _same_ amount of
948 * cc space as there was to begin with.
950 line->size += cols - oldcols;
951 line->chars = sresize(line->chars, line->size, TTYPE);
955 * If we're expanding the line, _now_ we move the cc
959 memmove(line->chars + cols, line->chars + oldcols,
960 (line->size - line->cols) * TSIZE);
963 * Go through what's left of the original line, and adjust
964 * the first cc_next pointer in each list. (All the
965 * subsequent ones are still valid because they are
966 * relative offsets within the cc block.) Also do the same
967 * to the head of the cc_free list.
969 for (i = 0; i < oldcols && i < cols; i++)
970 if (line->chars[i].cc_next)
971 line->chars[i].cc_next += cols - oldcols;
973 line->cc_free += cols - oldcols;
976 * And finally fill in the new space with erase chars. (We
977 * don't have to worry about cc lists here, because we
978 * _know_ the erase char doesn't have one.)
980 for (i = oldcols; i < cols; i++)
981 line->chars[i] = term->basic_erase_char;
990 * Get the number of lines in the scrollback.
992 static int sblines(Terminal *term)
994 int sblines = count234(term->scrollback);
995 if (term->erase_to_scrollback &&
996 term->alt_which && term->alt_screen) {
997 sblines += term->alt_sblines;
1003 * Retrieve a line of the screen or of the scrollback, according to
1004 * whether the y coordinate is non-negative or negative
1007 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
1014 whichtree = term->screen;
1021 if (term->erase_to_scrollback &&
1022 term->alt_which && term->alt_screen) {
1023 altlines = term->alt_sblines;
1025 if (y < -altlines) {
1026 whichtree = term->scrollback;
1027 treeindex = y + altlines + count234(term->scrollback);
1029 whichtree = term->alt_screen;
1030 treeindex = y + term->alt_sblines;
1031 /* treeindex = y + count234(term->alt_screen); */
1034 if (whichtree == term->scrollback) {
1035 unsigned char *cline = index234(whichtree, treeindex);
1036 line = decompressline(cline, NULL);
1038 line = index234(whichtree, treeindex);
1041 /* We assume that we don't screw up and retrieve something out of range. */
1043 fatalbox("line==NULL in terminal.c\n"
1044 "lineno=%d y=%d w=%d h=%d\n"
1045 "count(scrollback=%p)=%d\n"
1046 "count(screen=%p)=%d\n"
1047 "count(alt=%p)=%d alt_sblines=%d\n"
1048 "whichtree=%p treeindex=%d\n\n"
1049 "Please contact <putty@projects.tartarus.org> "
1050 "and pass on the above information.",
1051 lineno, y, term->cols, term->rows,
1052 term->scrollback, count234(term->scrollback),
1053 term->screen, count234(term->screen),
1054 term->alt_screen, count234(term->alt_screen), term->alt_sblines,
1055 whichtree, treeindex);
1057 assert(line != NULL);
1059 resizeline(term, line, term->cols);
1060 /* FIXME: should we sort the compressed scrollback out here? */
1065 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1066 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1068 static void term_schedule_tblink(Terminal *term);
1069 static void term_schedule_cblink(Terminal *term);
1071 static void term_timer(void *ctx, unsigned long now)
1073 Terminal *term = (Terminal *)ctx;
1076 if (term->tblink_pending && now == term->next_tblink) {
1077 term->tblinker = !term->tblinker;
1078 term->tblink_pending = FALSE;
1079 term_schedule_tblink(term);
1083 if (term->cblink_pending && now == term->next_cblink) {
1084 term->cblinker = !term->cblinker;
1085 term->cblink_pending = FALSE;
1086 term_schedule_cblink(term);
1090 if (term->in_vbell && now == term->vbell_end) {
1091 term->in_vbell = FALSE;
1096 (term->window_update_pending && now == term->next_update))
1100 static void term_schedule_update(Terminal *term)
1102 if (!term->window_update_pending) {
1103 term->window_update_pending = TRUE;
1104 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1109 * Call this whenever the terminal window state changes, to queue
1112 static void seen_disp_event(Terminal *term)
1114 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1115 term_schedule_update(term);
1119 * Call when the terminal's blinking-text settings change, or when
1120 * a text blink has just occurred.
1122 static void term_schedule_tblink(Terminal *term)
1124 if (term->blink_is_real) {
1125 if (!term->tblink_pending)
1126 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1127 term->tblink_pending = TRUE;
1129 term->tblinker = 1; /* reset when not in use */
1130 term->tblink_pending = FALSE;
1135 * Likewise with cursor blinks.
1137 static void term_schedule_cblink(Terminal *term)
1139 if (term->blink_cur && term->has_focus) {
1140 if (!term->cblink_pending)
1141 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1142 term->cblink_pending = TRUE;
1144 term->cblinker = 1; /* reset when not in use */
1145 term->cblink_pending = FALSE;
1150 * Call to reset cursor blinking on new output.
1152 static void term_reset_cblink(Terminal *term)
1154 seen_disp_event(term);
1156 term->cblink_pending = FALSE;
1157 term_schedule_cblink(term);
1161 * Call to begin a visual bell.
1163 static void term_schedule_vbell(Terminal *term, int already_started,
1166 long ticks_already_gone;
1168 if (already_started)
1169 ticks_already_gone = GETTICKCOUNT() - startpoint;
1171 ticks_already_gone = 0;
1173 if (ticks_already_gone < VBELL_DELAY) {
1174 term->in_vbell = TRUE;
1175 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1178 term->in_vbell = FALSE;
1183 * Set up power-on settings for the terminal.
1184 * If 'clear' is false, don't actually clear the primary screen, and
1185 * position the cursor below the last non-blank line (scrolling if
1188 static void power_on(Terminal *term, int clear)
1190 term->alt_x = term->alt_y = 0;
1191 term->savecurs.x = term->savecurs.y = 0;
1192 term->alt_savecurs.x = term->alt_savecurs.y = 0;
1193 term->alt_t = term->marg_t = 0;
1194 if (term->rows != -1)
1195 term->alt_b = term->marg_b = term->rows - 1;
1197 term->alt_b = term->marg_b = 0;
1198 if (term->cols != -1) {
1200 for (i = 0; i < term->cols; i++)
1201 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1203 term->alt_om = term->dec_om = conf_get_int(term->conf, CONF_dec_om);
1204 term->alt_ins = term->insert = FALSE;
1205 term->alt_wnext = term->wrapnext =
1206 term->save_wnext = term->alt_save_wnext = FALSE;
1207 term->alt_wrap = term->wrap = conf_get_int(term->conf, CONF_wrap_mode);
1208 term->alt_cset = term->cset = term->save_cset = term->alt_save_cset = 0;
1209 term->alt_utf = term->utf = term->save_utf = term->alt_save_utf = 0;
1210 term->utf_state = 0;
1211 term->alt_sco_acs = term->sco_acs =
1212 term->save_sco_acs = term->alt_save_sco_acs = 0;
1213 term->cset_attr[0] = term->cset_attr[1] =
1214 term->save_csattr = term->alt_save_csattr = CSET_ASCII;
1216 term->in_vbell = FALSE;
1217 term->cursor_on = 1;
1218 term->big_cursor = 0;
1219 term->default_attr = term->save_attr =
1220 term->alt_save_attr = term->curr_attr = ATTR_DEFAULT;
1221 term->term_editing = term->term_echoing = FALSE;
1222 term->app_cursor_keys = conf_get_int(term->conf, CONF_app_cursor);
1223 term->app_keypad_keys = conf_get_int(term->conf, CONF_app_keypad);
1224 term->use_bce = conf_get_int(term->conf, CONF_bce);
1225 term->blink_is_real = conf_get_int(term->conf, CONF_blinktext);
1226 term->erase_char = term->basic_erase_char;
1227 term->alt_which = 0;
1228 term_print_finish(term);
1229 term->xterm_mouse = 0;
1230 term->xterm_extended_mouse = 0;
1231 term->urxvt_extended_mouse = 0;
1232 set_raw_mouse_mode(term->frontend, FALSE);
1233 term->bracketed_paste = FALSE;
1236 for (i = 0; i < 256; i++)
1237 term->wordness[i] = conf_get_int_int(term->conf, CONF_wordness, i);
1240 swap_screen(term, 1, FALSE, FALSE);
1241 erase_lots(term, FALSE, TRUE, TRUE);
1242 swap_screen(term, 0, FALSE, FALSE);
1244 erase_lots(term, FALSE, TRUE, TRUE);
1245 term->curs.y = find_last_nonempty_line(term, term->screen) + 1;
1246 if (term->curs.y == term->rows) {
1248 scroll(term, 0, term->rows - 1, 1, TRUE);
1254 term_schedule_tblink(term);
1255 term_schedule_cblink(term);
1259 * Force a screen update.
1261 void term_update(Terminal *term)
1265 term->window_update_pending = FALSE;
1267 ctx = get_ctx(term->frontend);
1269 int need_sbar_update = term->seen_disp_event;
1270 if (term->seen_disp_event && term->scroll_on_disp) {
1271 term->disptop = 0; /* return to main screen */
1272 term->seen_disp_event = 0;
1273 need_sbar_update = TRUE;
1276 if (need_sbar_update)
1278 do_paint(term, ctx, TRUE);
1279 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1285 * Called from front end when a keypress occurs, to trigger
1286 * anything magical that needs to happen in that situation.
1288 void term_seen_key_event(Terminal *term)
1291 * On any keypress, clear the bell overload mechanism
1292 * completely, on the grounds that large numbers of
1293 * beeps coming from deliberate key action are likely
1294 * to be intended (e.g. beeps from filename completion
1295 * blocking repeatedly).
1297 term->beep_overloaded = FALSE;
1298 while (term->beephead) {
1299 struct beeptime *tmp = term->beephead;
1300 term->beephead = tmp->next;
1303 term->beeptail = NULL;
1307 * Reset the scrollback on keypress, if we're doing that.
1309 if (term->scroll_on_key) {
1310 term->disptop = 0; /* return to main screen */
1311 seen_disp_event(term);
1316 * Same as power_on(), but an external function.
1318 void term_pwron(Terminal *term, int clear)
1320 power_on(term, clear);
1321 if (term->ldisc) /* cause ldisc to notice changes */
1322 ldisc_send(term->ldisc, NULL, 0, 0);
1328 static void set_erase_char(Terminal *term)
1330 term->erase_char = term->basic_erase_char;
1332 term->erase_char.attr = (term->curr_attr &
1333 (ATTR_FGMASK | ATTR_BGMASK));
1337 * We copy a bunch of stuff out of the Conf structure into local
1338 * fields in the Terminal structure, to avoid the repeated tree234
1339 * lookups which would be involved in fetching them from the former
1342 void term_copy_stuff_from_conf(Terminal *term)
1344 term->ansi_colour = conf_get_int(term->conf, CONF_ansi_colour);
1345 term->arabicshaping = conf_get_int(term->conf, CONF_arabicshaping);
1346 term->beep = conf_get_int(term->conf, CONF_beep);
1347 term->bellovl = conf_get_int(term->conf, CONF_bellovl);
1348 term->bellovl_n = conf_get_int(term->conf, CONF_bellovl_n);
1349 term->bellovl_s = conf_get_int(term->conf, CONF_bellovl_s);
1350 term->bellovl_t = conf_get_int(term->conf, CONF_bellovl_t);
1351 term->bidi = conf_get_int(term->conf, CONF_bidi);
1352 term->bksp_is_delete = conf_get_int(term->conf, CONF_bksp_is_delete);
1353 term->blink_cur = conf_get_int(term->conf, CONF_blink_cur);
1354 term->blinktext = conf_get_int(term->conf, CONF_blinktext);
1355 term->cjk_ambig_wide = conf_get_int(term->conf, CONF_cjk_ambig_wide);
1356 term->conf_height = conf_get_int(term->conf, CONF_height);
1357 term->conf_width = conf_get_int(term->conf, CONF_width);
1358 term->crhaslf = conf_get_int(term->conf, CONF_crhaslf);
1359 term->erase_to_scrollback = conf_get_int(term->conf, CONF_erase_to_scrollback);
1360 term->funky_type = conf_get_int(term->conf, CONF_funky_type);
1361 term->lfhascr = conf_get_int(term->conf, CONF_lfhascr);
1362 term->logflush = conf_get_int(term->conf, CONF_logflush);
1363 term->logtype = conf_get_int(term->conf, CONF_logtype);
1364 term->mouse_override = conf_get_int(term->conf, CONF_mouse_override);
1365 term->nethack_keypad = conf_get_int(term->conf, CONF_nethack_keypad);
1366 term->no_alt_screen = conf_get_int(term->conf, CONF_no_alt_screen);
1367 term->no_applic_c = conf_get_int(term->conf, CONF_no_applic_c);
1368 term->no_applic_k = conf_get_int(term->conf, CONF_no_applic_k);
1369 term->no_dbackspace = conf_get_int(term->conf, CONF_no_dbackspace);
1370 term->no_mouse_rep = conf_get_int(term->conf, CONF_no_mouse_rep);
1371 term->no_remote_charset = conf_get_int(term->conf, CONF_no_remote_charset);
1372 term->no_remote_resize = conf_get_int(term->conf, CONF_no_remote_resize);
1373 term->no_remote_wintitle = conf_get_int(term->conf, CONF_no_remote_wintitle);
1374 term->rawcnp = conf_get_int(term->conf, CONF_rawcnp);
1375 term->rect_select = conf_get_int(term->conf, CONF_rect_select);
1376 term->remote_qtitle_action = conf_get_int(term->conf, CONF_remote_qtitle_action);
1377 term->rxvt_homeend = conf_get_int(term->conf, CONF_rxvt_homeend);
1378 term->scroll_on_disp = conf_get_int(term->conf, CONF_scroll_on_disp);
1379 term->scroll_on_key = conf_get_int(term->conf, CONF_scroll_on_key);
1380 term->xterm_256_colour = conf_get_int(term->conf, CONF_xterm_256_colour);
1383 * Parse the control-character escapes in the configured
1384 * answerback string.
1387 char *answerback = conf_get_str(term->conf, CONF_answerback);
1388 int maxlen = strlen(answerback);
1390 term->answerback = snewn(maxlen, char);
1391 term->answerbacklen = 0;
1393 while (*answerback) {
1395 char c = ctrlparse(answerback, &n);
1397 term->answerback[term->answerbacklen++] = c;
1400 term->answerback[term->answerbacklen++] = *answerback++;
1407 * When the user reconfigures us, we need to check the forbidden-
1408 * alternate-screen config option, disable raw mouse mode if the
1409 * user has disabled mouse reporting, and abandon a print job if
1410 * the user has disabled printing.
1412 void term_reconfig(Terminal *term, Conf *conf)
1415 * Before adopting the new config, check all those terminal
1416 * settings which control power-on defaults; and if they've
1417 * changed, we will modify the current state as well as the
1418 * default one. The full list is: Auto wrap mode, DEC Origin
1419 * Mode, BCE, blinking text, character classes.
1421 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1424 reset_wrap = (conf_get_int(term->conf, CONF_wrap_mode) !=
1425 conf_get_int(conf, CONF_wrap_mode));
1426 reset_decom = (conf_get_int(term->conf, CONF_dec_om) !=
1427 conf_get_int(conf, CONF_dec_om));
1428 reset_bce = (conf_get_int(term->conf, CONF_bce) !=
1429 conf_get_int(conf, CONF_bce));
1430 reset_tblink = (conf_get_int(term->conf, CONF_blinktext) !=
1431 conf_get_int(conf, CONF_blinktext));
1432 reset_charclass = 0;
1433 for (i = 0; i < 256; i++)
1434 if (conf_get_int_int(term->conf, CONF_wordness, i) !=
1435 conf_get_int_int(conf, CONF_wordness, i))
1436 reset_charclass = 1;
1439 * If the bidi or shaping settings have changed, flush the bidi
1442 if (conf_get_int(term->conf, CONF_arabicshaping) !=
1443 conf_get_int(conf, CONF_arabicshaping) ||
1444 conf_get_int(term->conf, CONF_bidi) !=
1445 conf_get_int(conf, CONF_bidi)) {
1446 for (i = 0; i < term->bidi_cache_size; i++) {
1447 sfree(term->pre_bidi_cache[i].chars);
1448 sfree(term->post_bidi_cache[i].chars);
1449 term->pre_bidi_cache[i].width = -1;
1450 term->pre_bidi_cache[i].chars = NULL;
1451 term->post_bidi_cache[i].width = -1;
1452 term->post_bidi_cache[i].chars = NULL;
1456 conf_free(term->conf);
1457 term->conf = conf_copy(conf);
1460 term->alt_wrap = term->wrap = conf_get_int(term->conf, CONF_wrap_mode);
1462 term->alt_om = term->dec_om = conf_get_int(term->conf, CONF_dec_om);
1464 term->use_bce = conf_get_int(term->conf, CONF_bce);
1465 set_erase_char(term);
1468 term->blink_is_real = conf_get_int(term->conf, CONF_blinktext);
1470 if (reset_charclass)
1471 for (i = 0; i < 256; i++)
1472 term->wordness[i] = conf_get_int_int(term->conf, CONF_wordness, i);
1474 if (conf_get_int(term->conf, CONF_no_alt_screen))
1475 swap_screen(term, 0, FALSE, FALSE);
1476 if (conf_get_int(term->conf, CONF_no_mouse_rep)) {
1477 term->xterm_mouse = 0;
1478 set_raw_mouse_mode(term->frontend, 0);
1480 if (conf_get_int(term->conf, CONF_no_remote_charset)) {
1481 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1482 term->sco_acs = term->alt_sco_acs = 0;
1485 if (!conf_get_str(term->conf, CONF_printer)) {
1486 term_print_finish(term);
1488 term_schedule_tblink(term);
1489 term_schedule_cblink(term);
1490 term_copy_stuff_from_conf(term);
1494 * Clear the scrollback.
1496 void term_clrsb(Terminal *term)
1498 unsigned char *line;
1500 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1501 sfree(line); /* this is compressed data, not a termline */
1503 term->tempsblines = 0;
1504 term->alt_sblines = 0;
1509 * Initialise the terminal.
1511 Terminal *term_init(Conf *myconf, struct unicode_data *ucsdata,
1517 * Allocate a new Terminal structure and initialise the fields
1520 term = snew(Terminal);
1521 term->frontend = frontend;
1522 term->ucsdata = ucsdata;
1523 term->conf = conf_copy(myconf);
1524 term->logctx = NULL;
1525 term->compatibility_level = TM_PUTTY;
1526 strcpy(term->id_string, "\033[?6c");
1527 term->cblink_pending = term->tblink_pending = FALSE;
1528 term->paste_buffer = NULL;
1529 term->paste_len = 0;
1530 bufchain_init(&term->inbuf);
1531 bufchain_init(&term->printer_buf);
1532 term->printing = term->only_printing = FALSE;
1533 term->print_job = NULL;
1534 term->vt52_mode = FALSE;
1535 term->cr_lf_return = FALSE;
1536 term->seen_disp_event = FALSE;
1537 term->mouse_is_down = FALSE;
1538 term->reset_132 = FALSE;
1539 term->cblinker = term->tblinker = 0;
1540 term->has_focus = 1;
1541 term->repeat_off = FALSE;
1542 term->termstate = TOPLEVEL;
1543 term->selstate = NO_SELECTION;
1546 term_copy_stuff_from_conf(term);
1548 term->screen = term->alt_screen = term->scrollback = NULL;
1549 term->tempsblines = 0;
1550 term->alt_sblines = 0;
1552 term->disptext = NULL;
1553 term->dispcursx = term->dispcursy = -1;
1556 term->rows = term->cols = -1;
1557 power_on(term, TRUE);
1558 term->beephead = term->beeptail = NULL;
1559 #ifdef OPTIMISE_SCROLL
1560 term->scrollhead = term->scrolltail = NULL;
1561 #endif /* OPTIMISE_SCROLL */
1563 term->lastbeep = FALSE;
1564 term->beep_overloaded = FALSE;
1565 term->attr_mask = 0xffffffff;
1566 term->resize_fn = NULL;
1567 term->resize_ctx = NULL;
1568 term->in_term_out = FALSE;
1570 term->ltemp_size = 0;
1571 term->wcFrom = NULL;
1573 term->wcFromTo_size = 0;
1575 term->window_update_pending = FALSE;
1577 term->bidi_cache_size = 0;
1578 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1581 term->basic_erase_char.chr = CSET_ASCII | ' ';
1582 term->basic_erase_char.attr = ATTR_DEFAULT;
1583 term->basic_erase_char.cc_next = 0;
1584 term->erase_char = term->basic_erase_char;
1589 void term_free(Terminal *term)
1592 struct beeptime *beep;
1595 while ((line = delpos234(term->scrollback, 0)) != NULL)
1596 sfree(line); /* compressed data, not a termline */
1597 freetree234(term->scrollback);
1598 while ((line = delpos234(term->screen, 0)) != NULL)
1600 freetree234(term->screen);
1601 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1603 freetree234(term->alt_screen);
1604 if (term->disptext) {
1605 for (i = 0; i < term->rows; i++)
1606 freeline(term->disptext[i]);
1608 sfree(term->disptext);
1609 while (term->beephead) {
1610 beep = term->beephead;
1611 term->beephead = beep->next;
1614 bufchain_clear(&term->inbuf);
1616 printer_finish_job(term->print_job);
1617 bufchain_clear(&term->printer_buf);
1618 sfree(term->paste_buffer);
1620 sfree(term->wcFrom);
1623 for (i = 0; i < term->bidi_cache_size; i++) {
1624 sfree(term->pre_bidi_cache[i].chars);
1625 sfree(term->post_bidi_cache[i].chars);
1626 sfree(term->post_bidi_cache[i].forward);
1627 sfree(term->post_bidi_cache[i].backward);
1629 sfree(term->pre_bidi_cache);
1630 sfree(term->post_bidi_cache);
1634 expire_timer_context(term);
1636 conf_free(term->conf);
1642 * Set up the terminal for a given size.
1644 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1647 termline **newdisp, *line;
1648 int i, j, oldrows = term->rows;
1650 int save_alt_which = term->alt_which;
1652 if (newrows == term->rows && newcols == term->cols &&
1653 newsavelines == term->savelines)
1654 return; /* nothing to do */
1656 /* Behave sensibly if we're given zero (or negative) rows/cols */
1658 if (newrows < 1) newrows = 1;
1659 if (newcols < 1) newcols = 1;
1662 swap_screen(term, 0, FALSE, FALSE);
1664 term->alt_t = term->marg_t = 0;
1665 term->alt_b = term->marg_b = newrows - 1;
1667 if (term->rows == -1) {
1668 term->scrollback = newtree234(NULL);
1669 term->screen = newtree234(NULL);
1670 term->tempsblines = 0;
1675 * Resize the screen and scrollback. We only need to shift
1676 * lines around within our data structures, because lineptr()
1677 * will take care of resizing each individual line if
1680 * - If the new screen is longer, we shunt lines in from temporary
1681 * scrollback if possible, otherwise we add new blank lines at
1684 * - If the new screen is shorter, we remove any blank lines at
1685 * the bottom if possible, otherwise shunt lines above the cursor
1686 * to scrollback if possible, otherwise delete lines below the
1689 * - Then, if the new scrollback length is less than the
1690 * amount of scrollback we actually have, we must throw some
1693 sblen = count234(term->scrollback);
1694 /* Do this loop to expand the screen if newrows > rows */
1695 assert(term->rows == count234(term->screen));
1696 while (term->rows < newrows) {
1697 if (term->tempsblines > 0) {
1698 unsigned char *cline;
1699 /* Insert a line from the scrollback at the top of the screen. */
1700 assert(sblen >= term->tempsblines);
1701 cline = delpos234(term->scrollback, --sblen);
1702 line = decompressline(cline, NULL);
1704 line->temporary = FALSE; /* reconstituted line is now real */
1705 term->tempsblines -= 1;
1706 addpos234(term->screen, line, 0);
1708 term->savecurs.y += 1;
1710 term->alt_savecurs.y += 1;
1712 /* Add a new blank line at the bottom of the screen. */
1713 line = newline(term, newcols, FALSE);
1714 addpos234(term->screen, line, count234(term->screen));
1718 /* Do this loop to shrink the screen if newrows < rows */
1719 while (term->rows > newrows) {
1720 if (term->curs.y < term->rows - 1) {
1721 /* delete bottom row, unless it contains the cursor */
1722 line = delpos234(term->screen, term->rows - 1);
1725 /* push top row to scrollback */
1726 line = delpos234(term->screen, 0);
1727 addpos234(term->scrollback, compressline(line), sblen++);
1729 term->tempsblines += 1;
1731 term->savecurs.y -= 1;
1733 term->alt_savecurs.y -= 1;
1737 assert(term->rows == newrows);
1738 assert(count234(term->screen) == newrows);
1740 /* Delete any excess lines from the scrollback. */
1741 while (sblen > newsavelines) {
1742 line = delpos234(term->scrollback, 0);
1746 if (sblen < term->tempsblines)
1747 term->tempsblines = sblen;
1748 assert(count234(term->scrollback) <= newsavelines);
1749 assert(count234(term->scrollback) >= term->tempsblines);
1752 /* Make a new displayed text buffer. */
1753 newdisp = snewn(newrows, termline *);
1754 for (i = 0; i < newrows; i++) {
1755 newdisp[i] = newline(term, newcols, FALSE);
1756 for (j = 0; j < newcols; j++)
1757 newdisp[i]->chars[j].attr = ATTR_INVALID;
1759 if (term->disptext) {
1760 for (i = 0; i < oldrows; i++)
1761 freeline(term->disptext[i]);
1763 sfree(term->disptext);
1764 term->disptext = newdisp;
1765 term->dispcursx = term->dispcursy = -1;
1767 /* Make a new alternate screen. */
1768 newalt = newtree234(NULL);
1769 for (i = 0; i < newrows; i++) {
1770 line = newline(term, newcols, TRUE);
1771 addpos234(newalt, line, i);
1773 if (term->alt_screen) {
1774 while (NULL != (line = delpos234(term->alt_screen, 0)))
1776 freetree234(term->alt_screen);
1778 term->alt_screen = newalt;
1779 term->alt_sblines = 0;
1781 term->tabs = sresize(term->tabs, newcols, unsigned char);
1784 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1785 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1788 /* Check that the cursor positions are still valid. */
1789 if (term->savecurs.y < 0)
1790 term->savecurs.y = 0;
1791 if (term->savecurs.y >= newrows)
1792 term->savecurs.y = newrows - 1;
1793 if (term->savecurs.x >= newcols)
1794 term->savecurs.x = newcols - 1;
1795 if (term->alt_savecurs.y < 0)
1796 term->alt_savecurs.y = 0;
1797 if (term->alt_savecurs.y >= newrows)
1798 term->alt_savecurs.y = newrows - 1;
1799 if (term->alt_savecurs.x >= newcols)
1800 term->alt_savecurs.x = newcols - 1;
1801 if (term->curs.y < 0)
1803 if (term->curs.y >= newrows)
1804 term->curs.y = newrows - 1;
1805 if (term->curs.x >= newcols)
1806 term->curs.x = newcols - 1;
1807 if (term->alt_y < 0)
1809 if (term->alt_y >= newrows)
1810 term->alt_y = newrows - 1;
1811 if (term->alt_x >= newcols)
1812 term->alt_x = newcols - 1;
1813 term->alt_x = term->alt_y = 0;
1814 term->wrapnext = term->alt_wnext = FALSE;
1816 term->rows = newrows;
1817 term->cols = newcols;
1818 term->savelines = newsavelines;
1820 swap_screen(term, save_alt_which, FALSE, FALSE);
1824 if (term->resize_fn)
1825 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1829 * Hand a function and context pointer to the terminal which it can
1830 * use to notify a back end of resizes.
1832 void term_provide_resize_fn(Terminal *term,
1833 void (*resize_fn)(void *, int, int),
1836 term->resize_fn = resize_fn;
1837 term->resize_ctx = resize_ctx;
1838 if (resize_fn && term->cols > 0 && term->rows > 0)
1839 resize_fn(resize_ctx, term->cols, term->rows);
1842 /* Find the bottom line on the screen that has any content.
1843 * If only the top line has content, returns 0.
1844 * If no lines have content, return -1.
1846 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1849 for (i = count234(screen) - 1; i >= 0; i--) {
1850 termline *line = index234(screen, i);
1852 for (j = 0; j < line->cols; j++)
1853 if (!termchars_equal(&line->chars[j], &term->erase_char))
1855 if (j != line->cols) break;
1861 * Swap screens. If `reset' is TRUE and we have been asked to
1862 * switch to the alternate screen, we must bring most of its
1863 * configuration from the main screen and erase the contents of the
1864 * alternate screen completely. (This is even true if we're already
1865 * on it! Blame xterm.)
1867 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1874 reset = FALSE; /* do no weird resetting if which==0 */
1876 if (which != term->alt_which) {
1877 term->alt_which = which;
1879 ttr = term->alt_screen;
1880 term->alt_screen = term->screen;
1882 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1884 if (!reset && !keep_cur_pos)
1885 term->curs.x = term->alt_x;
1888 if (!reset && !keep_cur_pos)
1889 term->curs.y = term->alt_y;
1892 if (!reset) term->marg_t = term->alt_t;
1895 if (!reset) term->marg_b = term->alt_b;
1898 if (!reset) term->dec_om = term->alt_om;
1901 if (!reset) term->wrap = term->alt_wrap;
1904 if (!reset) term->wrapnext = term->alt_wnext;
1905 term->alt_wnext = t;
1907 if (!reset) term->insert = term->alt_ins;
1910 if (!reset) term->cset = term->alt_cset;
1913 if (!reset) term->utf = term->alt_utf;
1916 if (!reset) term->sco_acs = term->alt_sco_acs;
1917 term->alt_sco_acs = t;
1919 tp = term->savecurs;
1920 if (!reset && !keep_cur_pos)
1921 term->savecurs = term->alt_savecurs;
1922 term->alt_savecurs = tp;
1923 t = term->save_cset;
1924 if (!reset && !keep_cur_pos)
1925 term->save_cset = term->alt_save_cset;
1926 term->alt_save_cset = t;
1927 t = term->save_csattr;
1928 if (!reset && !keep_cur_pos)
1929 term->save_csattr = term->alt_save_csattr;
1930 term->alt_save_csattr = t;
1931 t = term->save_attr;
1932 if (!reset && !keep_cur_pos)
1933 term->save_attr = term->alt_save_attr;
1934 term->alt_save_attr = t;
1936 if (!reset && !keep_cur_pos)
1937 term->save_utf = term->alt_save_utf;
1938 term->alt_save_utf = t;
1939 t = term->save_wnext;
1940 if (!reset && !keep_cur_pos)
1941 term->save_wnext = term->alt_save_wnext;
1942 term->alt_save_wnext = t;
1943 t = term->save_sco_acs;
1944 if (!reset && !keep_cur_pos)
1945 term->save_sco_acs = term->alt_save_sco_acs;
1946 term->alt_save_sco_acs = t;
1949 if (reset && term->screen) {
1951 * Yes, this _is_ supposed to honour background-colour-erase.
1953 erase_lots(term, FALSE, TRUE, TRUE);
1958 * Update the scroll bar.
1960 static void update_sbar(Terminal *term)
1962 int nscroll = sblines(term);
1963 set_sbar(term->frontend, nscroll + term->rows,
1964 nscroll + term->disptop, term->rows);
1968 * Check whether the region bounded by the two pointers intersects
1969 * the scroll region, and de-select the on-screen selection if so.
1971 static void check_selection(Terminal *term, pos from, pos to)
1973 if (poslt(from, term->selend) && poslt(term->selstart, to))
1978 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1979 * for backward.) `sb' is TRUE if the scrolling is permitted to
1980 * affect the scrollback buffer.
1982 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1985 int i, seltop, scrollwinsize;
1986 #ifdef OPTIMISE_SCROLL
1987 int olddisptop, shift;
1988 #endif /* OPTIMISE_SCROLL */
1990 if (topline != 0 || term->alt_which != 0)
1993 #ifdef OPTIMISE_SCROLL
1994 olddisptop = term->disptop;
1996 #endif /* OPTIMISE_SCROLL */
1998 scrollwinsize = botline - topline + 1;
2002 if (lines > scrollwinsize)
2003 lines = scrollwinsize;
2004 while (lines-- > 0) {
2005 line = delpos234(term->screen, botline);
2006 resizeline(term, line, term->cols);
2007 for (i = 0; i < term->cols; i++)
2008 copy_termchar(line, i, &term->erase_char);
2009 line->lattr = LATTR_NORM;
2010 addpos234(term->screen, line, topline);
2012 if (term->selstart.y >= topline && term->selstart.y <= botline) {
2014 if (term->selstart.y > botline) {
2015 term->selstart.y = botline + 1;
2016 term->selstart.x = 0;
2019 if (term->selend.y >= topline && term->selend.y <= botline) {
2021 if (term->selend.y > botline) {
2022 term->selend.y = botline + 1;
2028 if (lines > scrollwinsize)
2029 lines = scrollwinsize;
2030 while (lines-- > 0) {
2031 line = delpos234(term->screen, topline);
2032 #ifdef TERM_CC_DIAGS
2035 if (sb && term->savelines > 0) {
2036 int sblen = count234(term->scrollback);
2038 * We must add this line to the scrollback. We'll
2039 * remove a line from the top of the scrollback if
2040 * the scrollback is full.
2042 if (sblen == term->savelines) {
2043 unsigned char *cline;
2046 cline = delpos234(term->scrollback, 0);
2049 term->tempsblines += 1;
2051 addpos234(term->scrollback, compressline(line), sblen);
2053 /* now `line' itself can be reused as the bottom line */
2056 * If the user is currently looking at part of the
2057 * scrollback, and they haven't enabled any options
2058 * that are going to reset the scrollback as a
2059 * result of this movement, then the chances are
2060 * they'd like to keep looking at the same line. So
2061 * we move their viewpoint at the same rate as the
2062 * scroll, at least until their viewpoint hits the
2063 * top end of the scrollback buffer, at which point
2064 * we don't have the choice any more.
2066 * Thanks to Jan Holmen Holsten for the idea and
2067 * initial implementation.
2069 if (term->disptop > -term->savelines && term->disptop < 0)
2072 resizeline(term, line, term->cols);
2073 for (i = 0; i < term->cols; i++)
2074 copy_termchar(line, i, &term->erase_char);
2075 line->lattr = LATTR_NORM;
2076 addpos234(term->screen, line, botline);
2079 * If the selection endpoints move into the scrollback,
2080 * we keep them moving until they hit the top. However,
2081 * of course, if the line _hasn't_ moved into the
2082 * scrollback then we don't do this, and cut them off
2083 * at the top of the scroll region.
2085 * This applies to selstart and selend (for an existing
2086 * selection), and also selanchor (for one being
2087 * selected as we speak).
2089 seltop = sb ? -term->savelines : topline;
2091 if (term->selstate != NO_SELECTION) {
2092 if (term->selstart.y >= seltop &&
2093 term->selstart.y <= botline) {
2095 if (term->selstart.y < seltop) {
2096 term->selstart.y = seltop;
2097 term->selstart.x = 0;
2100 if (term->selend.y >= seltop && term->selend.y <= botline) {
2102 if (term->selend.y < seltop) {
2103 term->selend.y = seltop;
2107 if (term->selanchor.y >= seltop &&
2108 term->selanchor.y <= botline) {
2109 term->selanchor.y--;
2110 if (term->selanchor.y < seltop) {
2111 term->selanchor.y = seltop;
2112 term->selanchor.x = 0;
2118 #ifdef OPTIMISE_SCROLL
2119 shift += term->disptop - olddisptop;
2120 if (shift < term->rows && shift > -term->rows && shift != 0)
2121 scroll_display(term, topline, botline, shift);
2122 #endif /* OPTIMISE_SCROLL */
2125 #ifdef OPTIMISE_SCROLL
2127 * Add a scroll of a region on the screen into the pending scroll list.
2128 * `lines' is +ve for scrolling forward, -ve for backward.
2130 * If the scroll is on the same area as the last scroll in the list,
2133 static void save_scroll(Terminal *term, int topline, int botline, int lines)
2135 struct scrollregion *newscroll;
2136 if (term->scrolltail &&
2137 term->scrolltail->topline == topline &&
2138 term->scrolltail->botline == botline) {
2139 term->scrolltail->lines += lines;
2141 newscroll = snew(struct scrollregion);
2142 newscroll->topline = topline;
2143 newscroll->botline = botline;
2144 newscroll->lines = lines;
2145 newscroll->next = NULL;
2147 if (!term->scrollhead)
2148 term->scrollhead = newscroll;
2150 term->scrolltail->next = newscroll;
2151 term->scrolltail = newscroll;
2156 * Scroll the physical display, and our conception of it in disptext.
2158 static void scroll_display(Terminal *term, int topline, int botline, int lines)
2160 int distance, nlines, i, j;
2162 distance = lines > 0 ? lines : -lines;
2163 nlines = botline - topline + 1 - distance;
2165 for (i = 0; i < nlines; i++)
2166 for (j = 0; j < term->cols; j++)
2167 copy_termchar(term->disptext[i], j,
2168 term->disptext[i+distance]->chars+j);
2169 if (term->dispcursy >= 0 &&
2170 term->dispcursy >= topline + distance &&
2171 term->dispcursy < topline + distance + nlines)
2172 term->dispcursy -= distance;
2173 for (i = 0; i < distance; i++)
2174 for (j = 0; j < term->cols; j++)
2175 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
2177 for (i = nlines; i-- ;)
2178 for (j = 0; j < term->cols; j++)
2179 copy_termchar(term->disptext[i+distance], j,
2180 term->disptext[i]->chars+j);
2181 if (term->dispcursy >= 0 &&
2182 term->dispcursy >= topline &&
2183 term->dispcursy < topline + nlines)
2184 term->dispcursy += distance;
2185 for (i = 0; i < distance; i++)
2186 for (j = 0; j < term->cols; j++)
2187 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
2189 save_scroll(term, topline, botline, lines);
2191 #endif /* OPTIMISE_SCROLL */
2194 * Move the cursor to a given position, clipping at boundaries. We
2195 * may or may not want to clip at the scroll margin: marg_clip is 0
2196 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2197 * even _being_ outside the margins.
2199 static void move(Terminal *term, int x, int y, int marg_clip)
2203 if (x >= term->cols)
2206 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2209 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2215 if (y >= term->rows)
2219 term->wrapnext = FALSE;
2223 * Save or restore the cursor and SGR mode.
2225 static void save_cursor(Terminal *term, int save)
2228 term->savecurs = term->curs;
2229 term->save_attr = term->curr_attr;
2230 term->save_cset = term->cset;
2231 term->save_utf = term->utf;
2232 term->save_wnext = term->wrapnext;
2233 term->save_csattr = term->cset_attr[term->cset];
2234 term->save_sco_acs = term->sco_acs;
2236 term->curs = term->savecurs;
2237 /* Make sure the window hasn't shrunk since the save */
2238 if (term->curs.x >= term->cols)
2239 term->curs.x = term->cols - 1;
2240 if (term->curs.y >= term->rows)
2241 term->curs.y = term->rows - 1;
2243 term->curr_attr = term->save_attr;
2244 term->cset = term->save_cset;
2245 term->utf = term->save_utf;
2246 term->wrapnext = term->save_wnext;
2248 * wrapnext might reset to False if the x position is no
2249 * longer at the rightmost edge.
2251 if (term->wrapnext && term->curs.x < term->cols-1)
2252 term->wrapnext = FALSE;
2253 term->cset_attr[term->cset] = term->save_csattr;
2254 term->sco_acs = term->save_sco_acs;
2255 set_erase_char(term);
2260 * This function is called before doing _anything_ which affects
2261 * only part of a line of text. It is used to mark the boundary
2262 * between two character positions, and it indicates that some sort
2263 * of effect is going to happen on only one side of that boundary.
2265 * The effect of this function is to check whether a CJK
2266 * double-width character is straddling the boundary, and to remove
2267 * it and replace it with two spaces if so. (Of course, one or
2268 * other of those spaces is then likely to be replaced with
2269 * something else again, as a result of whatever happens next.)
2271 * Also, if the boundary is at the right-hand _edge_ of the screen,
2272 * it implies something deliberate is being done to the rightmost
2273 * column position; hence we must clear LATTR_WRAPPED2.
2275 * The input to the function is the coordinates of the _second_
2276 * character of the pair.
2278 static void check_boundary(Terminal *term, int x, int y)
2282 /* Validate input coordinates, just in case. */
2283 if (x == 0 || x > term->cols)
2286 ldata = scrlineptr(y);
2287 if (x == term->cols) {
2288 ldata->lattr &= ~LATTR_WRAPPED2;
2290 if (ldata->chars[x].chr == UCSWIDE) {
2291 clear_cc(ldata, x-1);
2293 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2294 ldata->chars[x] = ldata->chars[x-1];
2300 * Erase a large portion of the screen: the whole screen, or the
2301 * whole line, or parts thereof.
2303 static void erase_lots(Terminal *term,
2304 int line_only, int from_begin, int to_end)
2308 int erasing_lines_from_top = 0;
2311 start.y = term->curs.y;
2313 end.y = term->curs.y + 1;
2315 erase_lattr = FALSE;
2330 if (!from_begin || !to_end)
2331 check_boundary(term, term->curs.x, term->curs.y);
2332 check_selection(term, start, end);
2334 /* Clear screen also forces a full window redraw, just in case. */
2335 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2336 term_invalidate(term);
2338 /* Lines scrolled away shouldn't be brought back on if the terminal
2340 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2341 erasing_lines_from_top = 1;
2343 if (term->erase_to_scrollback && erasing_lines_from_top) {
2344 /* If it's a whole number of lines, starting at the top, and
2345 * we're fully erasing them, erase by scrolling and keep the
2346 * lines in the scrollback. */
2347 int scrolllines = end.y;
2348 if (end.y == term->rows) {
2349 /* Shrink until we find a non-empty row.*/
2350 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2352 if (scrolllines > 0)
2353 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2355 termline *ldata = scrlineptr(start.y);
2356 while (poslt(start, end)) {
2357 if (start.x == term->cols) {
2359 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2361 ldata->lattr = LATTR_NORM;
2363 copy_termchar(ldata, start.x, &term->erase_char);
2365 if (incpos(start) && start.y < term->rows) {
2366 ldata = scrlineptr(start.y);
2371 /* After an erase of lines from the top of the screen, we shouldn't
2372 * bring the lines back again if the terminal enlarges (since the user or
2373 * application has explictly thrown them away). */
2374 if (erasing_lines_from_top && !(term->alt_which))
2375 term->tempsblines = 0;
2379 * Insert or delete characters within the current line. n is +ve if
2380 * insertion is desired, and -ve for deletion.
2382 static void insch(Terminal *term, int n)
2384 int dir = (n < 0 ? -1 : +1);
2389 n = (n < 0 ? -n : n);
2390 if (n > term->cols - term->curs.x)
2391 n = term->cols - term->curs.x;
2392 m = term->cols - term->curs.x - n;
2393 cursplus.y = term->curs.y;
2394 cursplus.x = term->curs.x + n;
2395 check_selection(term, term->curs, cursplus);
2396 check_boundary(term, term->curs.x, term->curs.y);
2398 check_boundary(term, term->curs.x + n, term->curs.y);
2399 ldata = scrlineptr(term->curs.y);
2401 for (j = 0; j < m; j++)
2402 move_termchar(ldata,
2403 ldata->chars + term->curs.x + j,
2404 ldata->chars + term->curs.x + j + n);
2406 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2409 move_termchar(ldata,
2410 ldata->chars + term->curs.x + j + n,
2411 ldata->chars + term->curs.x + j);
2413 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2418 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2419 * whether the mode is a DEC private one or a normal one.)
2421 static void toggle_mode(Terminal *term, int mode, int query, int state)
2425 case 1: /* DECCKM: application cursor keys */
2426 term->app_cursor_keys = state;
2428 case 2: /* DECANM: VT52 mode */
2429 term->vt52_mode = !state;
2430 if (term->vt52_mode) {
2431 term->blink_is_real = FALSE;
2432 term->vt52_bold = FALSE;
2434 term->blink_is_real = term->blinktext;
2436 term_schedule_tblink(term);
2438 case 3: /* DECCOLM: 80/132 columns */
2440 if (!term->no_remote_resize)
2441 request_resize(term->frontend, state ? 132 : 80, term->rows);
2442 term->reset_132 = state;
2443 term->alt_t = term->marg_t = 0;
2444 term->alt_b = term->marg_b = term->rows - 1;
2445 move(term, 0, 0, 0);
2446 erase_lots(term, FALSE, TRUE, TRUE);
2448 case 5: /* DECSCNM: reverse video */
2450 * Toggle reverse video. If we receive an OFF within the
2451 * visual bell timeout period after an ON, we trigger an
2452 * effective visual bell, so that ESC[?5hESC[?5l will
2453 * always be an actually _visible_ visual bell.
2455 if (term->rvideo && !state) {
2456 /* This is an OFF, so set up a vbell */
2457 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2458 } else if (!term->rvideo && state) {
2459 /* This is an ON, so we notice the time and save it. */
2460 term->rvbell_startpoint = GETTICKCOUNT();
2462 term->rvideo = state;
2463 seen_disp_event(term);
2465 case 6: /* DECOM: DEC origin mode */
2466 term->dec_om = state;
2468 case 7: /* DECAWM: auto wrap */
2471 case 8: /* DECARM: auto key repeat */
2472 term->repeat_off = !state;
2474 case 10: /* DECEDM: set local edit mode */
2475 term->term_editing = state;
2476 if (term->ldisc) /* cause ldisc to notice changes */
2477 ldisc_send(term->ldisc, NULL, 0, 0);
2479 case 25: /* DECTCEM: enable/disable cursor */
2480 compatibility2(OTHER, VT220);
2481 term->cursor_on = state;
2482 seen_disp_event(term);
2484 case 47: /* alternate screen */
2485 compatibility(OTHER);
2487 swap_screen(term, term->no_alt_screen ? 0 : state, FALSE, FALSE);
2490 case 1000: /* xterm mouse 1 (normal) */
2491 term->xterm_mouse = state ? 1 : 0;
2492 set_raw_mouse_mode(term->frontend, state);
2494 case 1002: /* xterm mouse 2 (inc. button drags) */
2495 term->xterm_mouse = state ? 2 : 0;
2496 set_raw_mouse_mode(term->frontend, state);
2498 case 1006: /* xterm extended mouse */
2499 term->xterm_extended_mouse = state ? 1 : 0;
2501 case 1015: /* urxvt extended mouse */
2502 term->urxvt_extended_mouse = state ? 1 : 0;
2504 case 1047: /* alternate screen */
2505 compatibility(OTHER);
2507 swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, TRUE);
2510 case 1048: /* save/restore cursor */
2511 if (!term->no_alt_screen)
2512 save_cursor(term, state);
2513 if (!state) seen_disp_event(term);
2515 case 1049: /* cursor & alternate screen */
2516 if (state && !term->no_alt_screen)
2517 save_cursor(term, state);
2518 if (!state) seen_disp_event(term);
2519 compatibility(OTHER);
2521 swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, FALSE);
2522 if (!state && !term->no_alt_screen)
2523 save_cursor(term, state);
2526 case 2004: /* xterm bracketed paste */
2527 term->bracketed_paste = state ? TRUE : FALSE;
2531 case 4: /* IRM: set insert mode */
2532 compatibility(VT102);
2533 term->insert = state;
2535 case 12: /* SRM: set echo mode */
2536 term->term_echoing = !state;
2537 if (term->ldisc) /* cause ldisc to notice changes */
2538 ldisc_send(term->ldisc, NULL, 0, 0);
2540 case 20: /* LNM: Return sends ... */
2541 term->cr_lf_return = state;
2543 case 34: /* WYULCURM: Make cursor BIG */
2544 compatibility2(OTHER, VT220);
2545 term->big_cursor = !state;
2550 * Process an OSC sequence: set window title or icon name.
2552 static void do_osc(Terminal *term)
2555 while (term->osc_strlen--)
2556 term->wordness[(unsigned char)
2557 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2559 term->osc_string[term->osc_strlen] = '\0';
2560 switch (term->esc_args[0]) {
2563 if (!term->no_remote_wintitle)
2564 set_icon(term->frontend, term->osc_string);
2565 if (term->esc_args[0] == 1)
2567 /* fall through: parameter 0 means set both */
2570 if (!term->no_remote_wintitle)
2571 set_title(term->frontend, term->osc_string);
2578 * ANSI printing routines.
2580 static void term_print_setup(Terminal *term, char *printer)
2582 bufchain_clear(&term->printer_buf);
2583 term->print_job = printer_start_job(printer);
2585 static void term_print_flush(Terminal *term)
2590 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2591 bufchain_prefix(&term->printer_buf, &data, &len);
2594 printer_job_data(term->print_job, data, len);
2595 bufchain_consume(&term->printer_buf, len);
2598 static void term_print_finish(Terminal *term)
2604 if (!term->printing && !term->only_printing)
2605 return; /* we need do nothing */
2607 term_print_flush(term);
2608 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2609 bufchain_prefix(&term->printer_buf, &data, &len);
2611 if (c == '\033' || c == '\233') {
2612 bufchain_consume(&term->printer_buf, size);
2615 printer_job_data(term->print_job, &c, 1);
2616 bufchain_consume(&term->printer_buf, 1);
2619 printer_finish_job(term->print_job);
2620 term->print_job = NULL;
2621 term->printing = term->only_printing = FALSE;
2625 * Remove everything currently in `inbuf' and stick it up on the
2626 * in-memory display. There's a big state machine in here to
2627 * process escape sequences...
2629 static void term_out(Terminal *term)
2633 unsigned char localbuf[256], *chars;
2638 chars = NULL; /* placate compiler warnings */
2639 while (nchars > 0 || unget != -1 || bufchain_size(&term->inbuf) > 0) {
2643 bufchain_prefix(&term->inbuf, &ret, &nchars);
2644 if (nchars > sizeof(localbuf))
2645 nchars = sizeof(localbuf);
2646 memcpy(localbuf, ret, nchars);
2647 bufchain_consume(&term->inbuf, nchars);
2649 assert(chars != NULL);
2655 * Optionally log the session traffic to a file. Useful for
2656 * debugging and possibly also useful for actual logging.
2658 if (term->logtype == LGTYP_DEBUG && term->logctx)
2659 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2665 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2666 * be able to display 8-bit characters, but I'll let that go 'cause
2671 * If we're printing, add the character to the printer
2674 if (term->printing) {
2675 bufchain_add(&term->printer_buf, &c, 1);
2678 * If we're in print-only mode, we use a much simpler
2679 * state machine designed only to recognise the ESC[4i
2680 * termination sequence.
2682 if (term->only_printing) {
2684 term->print_state = 1;
2685 else if (c == (unsigned char)'\233')
2686 term->print_state = 2;
2687 else if (c == '[' && term->print_state == 1)
2688 term->print_state = 2;
2689 else if (c == '4' && term->print_state == 2)
2690 term->print_state = 3;
2691 else if (c == 'i' && term->print_state == 3)
2692 term->print_state = 4;
2694 term->print_state = 0;
2695 if (term->print_state == 4) {
2696 term_print_finish(term);
2702 /* First see about all those translations. */
2703 if (term->termstate == TOPLEVEL) {
2705 switch (term->utf_state) {
2708 /* UTF-8 must be stateless so we ignore iso2022. */
2709 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2710 c = term->ucsdata->unitab_ctrl[c];
2711 else c = ((unsigned char)c) | CSET_ASCII;
2713 } else if ((c & 0xe0) == 0xc0) {
2714 term->utf_size = term->utf_state = 1;
2715 term->utf_char = (c & 0x1f);
2716 } else if ((c & 0xf0) == 0xe0) {
2717 term->utf_size = term->utf_state = 2;
2718 term->utf_char = (c & 0x0f);
2719 } else if ((c & 0xf8) == 0xf0) {
2720 term->utf_size = term->utf_state = 3;
2721 term->utf_char = (c & 0x07);
2722 } else if ((c & 0xfc) == 0xf8) {
2723 term->utf_size = term->utf_state = 4;
2724 term->utf_char = (c & 0x03);
2725 } else if ((c & 0xfe) == 0xfc) {
2726 term->utf_size = term->utf_state = 5;
2727 term->utf_char = (c & 0x01);
2738 if ((c & 0xC0) != 0x80) {
2741 term->utf_state = 0;
2744 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2745 if (--term->utf_state)
2750 /* Is somebody trying to be evil! */
2752 (c < 0x800 && term->utf_size >= 2) ||
2753 (c < 0x10000 && term->utf_size >= 3) ||
2754 (c < 0x200000 && term->utf_size >= 4) ||
2755 (c < 0x4000000 && term->utf_size >= 5))
2758 /* Unicode line separator and paragraph separator are CR-LF */
2759 if (c == 0x2028 || c == 0x2029)
2762 /* High controls are probably a Baaad idea too. */
2766 /* The UTF-16 surrogates are not nice either. */
2767 /* The standard give the option of decoding these:
2768 * I don't want to! */
2769 if (c >= 0xD800 && c < 0xE000)
2772 /* ISO 10646 characters now limited to UTF-16 range. */
2776 /* This is currently a TagPhobic application.. */
2777 if (c >= 0xE0000 && c <= 0xE007F)
2780 /* U+FEFF is best seen as a null. */
2783 /* But U+FFFE is an error. */
2784 if (c == 0xFFFE || c == 0xFFFF)
2789 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2790 else if(term->sco_acs &&
2791 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2793 if (term->sco_acs == 2) c |= 0x80;
2796 switch (term->cset_attr[term->cset]) {
2798 * Linedraw characters are different from 'ESC ( B'
2799 * only for a small range. For ones outside that
2800 * range, make sure we use the same font as well as
2801 * the same encoding.
2804 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2805 c = term->ucsdata->unitab_ctrl[c];
2807 c = ((unsigned char) c) | CSET_LINEDRW;
2811 /* If UK-ASCII, make the '#' a LineDraw Pound */
2813 c = '}' | CSET_LINEDRW;
2816 /*FALLTHROUGH*/ case CSET_ASCII:
2817 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2818 c = term->ucsdata->unitab_ctrl[c];
2820 c = ((unsigned char) c) | CSET_ASCII;
2823 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2830 * How about C1 controls?
2831 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2833 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2834 !term->vt52_mode && has_compat(VT220)) {
2838 term->termstate = SEEN_ESC;
2839 term->esc_query = FALSE;
2840 c = '@' + (c & 0x1F);
2844 /* Or the GL control. */
2845 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2846 if (term->curs.x && !term->wrapnext)
2848 term->wrapnext = FALSE;
2849 /* destructive backspace might be disabled */
2850 if (!term->no_dbackspace) {
2851 check_boundary(term, term->curs.x, term->curs.y);
2852 check_boundary(term, term->curs.x+1, term->curs.y);
2853 copy_termchar(scrlineptr(term->curs.y),
2854 term->curs.x, &term->erase_char);
2857 /* Or normal C0 controls. */
2858 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2860 case '\005': /* ENQ: terminal type query */
2862 * Strictly speaking this is VT100 but a VT100 defaults to
2863 * no response. Other terminals respond at their option.
2865 * Don't put a CR in the default string as this tends to
2866 * upset some weird software.
2868 compatibility(ANSIMIN);
2870 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2871 term->answerback, term->answerbacklen, 0);
2874 case '\007': /* BEL: Bell */
2876 struct beeptime *newbeep;
2877 unsigned long ticks;
2879 ticks = GETTICKCOUNT();
2881 if (!term->beep_overloaded) {
2882 newbeep = snew(struct beeptime);
2883 newbeep->ticks = ticks;
2884 newbeep->next = NULL;
2885 if (!term->beephead)
2886 term->beephead = newbeep;
2888 term->beeptail->next = newbeep;
2889 term->beeptail = newbeep;
2894 * Throw out any beeps that happened more than
2897 while (term->beephead &&
2898 term->beephead->ticks < ticks - term->bellovl_t) {
2899 struct beeptime *tmp = term->beephead;
2900 term->beephead = tmp->next;
2902 if (!term->beephead)
2903 term->beeptail = NULL;
2907 if (term->bellovl && term->beep_overloaded &&
2908 ticks - term->lastbeep >= (unsigned)term->bellovl_s) {
2910 * If we're currently overloaded and the
2911 * last beep was more than s seconds ago,
2912 * leave overload mode.
2914 term->beep_overloaded = FALSE;
2915 } else if (term->bellovl && !term->beep_overloaded &&
2916 term->nbeeps >= term->bellovl_n) {
2918 * Now, if we have n or more beeps
2919 * remaining in the queue, go into overload
2922 term->beep_overloaded = TRUE;
2924 term->lastbeep = ticks;
2927 * Perform an actual beep if we're not overloaded.
2929 if (!term->bellovl || !term->beep_overloaded) {
2930 do_beep(term->frontend, term->beep);
2932 if (term->beep == BELL_VISUAL) {
2933 term_schedule_vbell(term, FALSE, 0);
2936 seen_disp_event(term);
2939 case '\b': /* BS: Back space */
2940 if (term->curs.x == 0 &&
2941 (term->curs.y == 0 || term->wrap == 0))
2943 else if (term->curs.x == 0 && term->curs.y > 0)
2944 term->curs.x = term->cols - 1, term->curs.y--;
2945 else if (term->wrapnext)
2946 term->wrapnext = FALSE;
2949 seen_disp_event(term);
2951 case '\016': /* LS1: Locking-shift one */
2952 compatibility(VT100);
2955 case '\017': /* LS0: Locking-shift zero */
2956 compatibility(VT100);
2959 case '\033': /* ESC: Escape */
2960 if (term->vt52_mode)
2961 term->termstate = VT52_ESC;
2963 compatibility(ANSIMIN);
2964 term->termstate = SEEN_ESC;
2965 term->esc_query = FALSE;
2968 case '\015': /* CR: Carriage return */
2970 term->wrapnext = FALSE;
2971 seen_disp_event(term);
2972 term_resume_pasting(term);
2974 if (term->crhaslf) {
2975 if (term->curs.y == term->marg_b)
2976 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2977 else if (term->curs.y < term->rows - 1)
2981 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2983 case '\014': /* FF: Form feed */
2984 if (has_compat(SCOANSI)) {
2985 move(term, 0, 0, 0);
2986 erase_lots(term, FALSE, FALSE, TRUE);
2988 term->wrapnext = FALSE;
2989 seen_disp_event(term);
2992 case '\013': /* VT: Line tabulation */
2993 compatibility(VT100);
2994 case '\012': /* LF: Line feed */
2995 if (term->curs.y == term->marg_b)
2996 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2997 else if (term->curs.y < term->rows - 1)
3001 term->wrapnext = FALSE;
3002 seen_disp_event(term);
3003 term_resume_pasting(term);
3005 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
3007 case '\t': /* HT: Character tabulation */
3009 pos old_curs = term->curs;
3010 termline *ldata = scrlineptr(term->curs.y);
3014 } while (term->curs.x < term->cols - 1 &&
3015 !term->tabs[term->curs.x]);
3017 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
3018 if (term->curs.x >= term->cols / 2)
3019 term->curs.x = term->cols / 2 - 1;
3021 if (term->curs.x >= term->cols)
3022 term->curs.x = term->cols - 1;
3025 check_selection(term, old_curs, term->curs);
3027 seen_disp_event(term);
3031 switch (term->termstate) {
3033 /* Only graphic characters get this far;
3034 * ctrls are stripped above */
3036 termline *cline = scrlineptr(term->curs.y);
3041 width = (term->cjk_ambig_wide ?
3042 mk_wcwidth_cjk((unsigned int) c) :
3043 mk_wcwidth((unsigned int) c));
3045 if (term->wrapnext && term->wrap && width > 0) {
3046 cline->lattr |= LATTR_WRAPPED;
3047 if (term->curs.y == term->marg_b)
3048 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3049 else if (term->curs.y < term->rows - 1)
3052 term->wrapnext = FALSE;
3053 cline = scrlineptr(term->curs.y);
3055 if (term->insert && width > 0)
3057 if (term->selstate != NO_SELECTION) {
3058 pos cursplus = term->curs;
3060 check_selection(term, term->curs, cursplus);
3062 if (((c & CSET_MASK) == CSET_ASCII ||
3063 (c & CSET_MASK) == 0) &&
3065 logtraffic(term->logctx, (unsigned char) c,
3071 * If we're about to display a double-width
3072 * character starting in the rightmost
3073 * column, then we do something special
3074 * instead. We must print a space in the
3075 * last column of the screen, then wrap;
3076 * and we also set LATTR_WRAPPED2 which
3077 * instructs subsequent cut-and-pasting not
3078 * only to splice this line to the one
3079 * after it, but to ignore the space in the
3080 * last character position as well.
3081 * (Because what was actually output to the
3082 * terminal was presumably just a sequence
3083 * of CJK characters, and we don't want a
3084 * space to be pasted in the middle of
3085 * those just because they had the
3086 * misfortune to start in the wrong parity
3087 * column. xterm concurs.)
3089 check_boundary(term, term->curs.x, term->curs.y);
3090 check_boundary(term, term->curs.x+2, term->curs.y);
3091 if (term->curs.x == term->cols-1) {
3092 copy_termchar(cline, term->curs.x,
3094 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
3095 if (term->curs.y == term->marg_b)
3096 scroll(term, term->marg_t, term->marg_b,
3098 else if (term->curs.y < term->rows - 1)
3101 cline = scrlineptr(term->curs.y);
3102 /* Now we must check_boundary again, of course. */
3103 check_boundary(term, term->curs.x, term->curs.y);
3104 check_boundary(term, term->curs.x+2, term->curs.y);
3108 clear_cc(cline, term->curs.x);
3109 cline->chars[term->curs.x].chr = c;
3110 cline->chars[term->curs.x].attr = term->curr_attr;
3115 clear_cc(cline, term->curs.x);
3116 cline->chars[term->curs.x].chr = UCSWIDE;
3117 cline->chars[term->curs.x].attr = term->curr_attr;
3121 check_boundary(term, term->curs.x, term->curs.y);
3122 check_boundary(term, term->curs.x+1, term->curs.y);
3125 clear_cc(cline, term->curs.x);
3126 cline->chars[term->curs.x].chr = c;
3127 cline->chars[term->curs.x].attr = term->curr_attr;
3131 if (term->curs.x > 0) {
3132 int x = term->curs.x - 1;
3134 /* If we're in wrapnext state, the character
3135 * to combine with is _here_, not to our left. */
3140 * If the previous character is
3141 * UCSWIDE, back up another one.
3143 if (cline->chars[x].chr == UCSWIDE) {
3148 add_cc(cline, x, c);
3149 seen_disp_event(term);
3156 if (term->curs.x == term->cols) {
3158 term->wrapnext = TRUE;
3159 if (term->wrap && term->vt52_mode) {
3160 cline->lattr |= LATTR_WRAPPED;
3161 if (term->curs.y == term->marg_b)
3162 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3163 else if (term->curs.y < term->rows - 1)
3166 term->wrapnext = FALSE;
3169 seen_disp_event(term);
3175 * This state is virtually identical to SEEN_ESC, with the
3176 * exception that we have an OSC sequence in the pipeline,
3177 * and _if_ we see a backslash, we process it.
3181 term->termstate = TOPLEVEL;
3184 /* else fall through */
3186 if (c >= ' ' && c <= '/') {
3187 if (term->esc_query)
3188 term->esc_query = -1;
3190 term->esc_query = c;
3193 term->termstate = TOPLEVEL;
3194 switch (ANSI(c, term->esc_query)) {
3195 case '[': /* enter CSI mode */
3196 term->termstate = SEEN_CSI;
3197 term->esc_nargs = 1;
3198 term->esc_args[0] = ARG_DEFAULT;
3199 term->esc_query = FALSE;
3201 case ']': /* OSC: xterm escape sequences */
3202 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3203 compatibility(OTHER);
3204 term->termstate = SEEN_OSC;
3205 term->esc_args[0] = 0;
3207 case '7': /* DECSC: save cursor */
3208 compatibility(VT100);
3209 save_cursor(term, TRUE);
3211 case '8': /* DECRC: restore cursor */
3212 compatibility(VT100);
3213 save_cursor(term, FALSE);
3214 seen_disp_event(term);
3216 case '=': /* DECKPAM: Keypad application mode */
3217 compatibility(VT100);
3218 term->app_keypad_keys = TRUE;
3220 case '>': /* DECKPNM: Keypad numeric mode */
3221 compatibility(VT100);
3222 term->app_keypad_keys = FALSE;
3224 case 'D': /* IND: exactly equivalent to LF */
3225 compatibility(VT100);
3226 if (term->curs.y == term->marg_b)
3227 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3228 else if (term->curs.y < term->rows - 1)
3230 term->wrapnext = FALSE;
3231 seen_disp_event(term);
3233 case 'E': /* NEL: exactly equivalent to CR-LF */
3234 compatibility(VT100);
3236 if (term->curs.y == term->marg_b)
3237 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3238 else if (term->curs.y < term->rows - 1)
3240 term->wrapnext = FALSE;
3241 seen_disp_event(term);
3243 case 'M': /* RI: reverse index - backwards LF */
3244 compatibility(VT100);
3245 if (term->curs.y == term->marg_t)
3246 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3247 else if (term->curs.y > 0)
3249 term->wrapnext = FALSE;
3250 seen_disp_event(term);
3252 case 'Z': /* DECID: terminal type query */
3253 compatibility(VT100);
3255 ldisc_send(term->ldisc, term->id_string,
3256 strlen(term->id_string), 0);
3258 case 'c': /* RIS: restore power-on settings */
3259 compatibility(VT100);
3260 power_on(term, TRUE);
3261 if (term->ldisc) /* cause ldisc to notice changes */
3262 ldisc_send(term->ldisc, NULL, 0, 0);
3263 if (term->reset_132) {
3264 if (!term->no_remote_resize)
3265 request_resize(term->frontend, 80, term->rows);
3266 term->reset_132 = 0;
3269 seen_disp_event(term);
3271 case 'H': /* HTS: set a tab */
3272 compatibility(VT100);
3273 term->tabs[term->curs.x] = TRUE;
3276 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3277 compatibility(VT100);
3283 for (i = 0; i < term->rows; i++) {
3284 ldata = scrlineptr(i);
3285 for (j = 0; j < term->cols; j++) {
3286 copy_termchar(ldata, j,
3287 &term->basic_erase_char);
3288 ldata->chars[j].chr = 'E';
3290 ldata->lattr = LATTR_NORM;
3293 seen_disp_event(term);
3294 scrtop.x = scrtop.y = 0;
3296 scrbot.y = term->rows;
3297 check_selection(term, scrtop, scrbot);
3301 case ANSI('3', '#'):
3302 case ANSI('4', '#'):
3303 case ANSI('5', '#'):
3304 case ANSI('6', '#'):
3305 compatibility(VT100);
3309 switch (ANSI(c, term->esc_query)) {
3310 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3313 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3316 case ANSI('5', '#'): /* DECSWL: normal */
3317 nlattr = LATTR_NORM;
3319 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3320 nlattr = LATTR_WIDE;
3323 scrlineptr(term->curs.y)->lattr = nlattr;
3326 /* GZD4: G0 designate 94-set */
3327 case ANSI('A', '('):
3328 compatibility(VT100);
3329 if (!term->no_remote_charset)
3330 term->cset_attr[0] = CSET_GBCHR;
3332 case ANSI('B', '('):
3333 compatibility(VT100);
3334 if (!term->no_remote_charset)
3335 term->cset_attr[0] = CSET_ASCII;
3337 case ANSI('0', '('):
3338 compatibility(VT100);
3339 if (!term->no_remote_charset)
3340 term->cset_attr[0] = CSET_LINEDRW;
3342 case ANSI('U', '('):
3343 compatibility(OTHER);
3344 if (!term->no_remote_charset)
3345 term->cset_attr[0] = CSET_SCOACS;
3347 /* G1D4: G1-designate 94-set */
3348 case ANSI('A', ')'):
3349 compatibility(VT100);
3350 if (!term->no_remote_charset)
3351 term->cset_attr[1] = CSET_GBCHR;
3353 case ANSI('B', ')'):
3354 compatibility(VT100);
3355 if (!term->no_remote_charset)
3356 term->cset_attr[1] = CSET_ASCII;
3358 case ANSI('0', ')'):
3359 compatibility(VT100);
3360 if (!term->no_remote_charset)
3361 term->cset_attr[1] = CSET_LINEDRW;
3363 case ANSI('U', ')'):
3364 compatibility(OTHER);
3365 if (!term->no_remote_charset)
3366 term->cset_attr[1] = CSET_SCOACS;
3368 /* DOCS: Designate other coding system */
3369 case ANSI('8', '%'): /* Old Linux code */
3370 case ANSI('G', '%'):
3371 compatibility(OTHER);
3372 if (!term->no_remote_charset)
3375 case ANSI('@', '%'):
3376 compatibility(OTHER);
3377 if (!term->no_remote_charset)
3383 term->termstate = TOPLEVEL; /* default */
3385 if (term->esc_nargs <= ARGS_MAX) {
3386 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3387 term->esc_args[term->esc_nargs - 1] = 0;
3388 term->esc_args[term->esc_nargs - 1] =
3389 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3391 term->termstate = SEEN_CSI;
3392 } else if (c == ';') {
3393 if (term->esc_nargs < ARGS_MAX)
3394 term->esc_args[term->esc_nargs++] = ARG_DEFAULT;
3395 term->termstate = SEEN_CSI;
3396 } else if (c < '@') {
3397 if (term->esc_query)
3398 term->esc_query = -1;
3400 term->esc_query = TRUE;
3402 term->esc_query = c;
3403 term->termstate = SEEN_CSI;
3405 switch (ANSI(c, term->esc_query)) {
3406 case 'A': /* CUU: move up N lines */
3407 move(term, term->curs.x,
3408 term->curs.y - def(term->esc_args[0], 1), 1);
3409 seen_disp_event(term);
3411 case 'e': /* VPR: move down N lines */
3412 compatibility(ANSI);
3414 case 'B': /* CUD: Cursor down */
3415 move(term, term->curs.x,
3416 term->curs.y + def(term->esc_args[0], 1), 1);
3417 seen_disp_event(term);
3419 case ANSI('c', '>'): /* DA: report xterm version */
3420 compatibility(OTHER);
3421 /* this reports xterm version 136 so that VIM can
3422 use the drag messages from the mouse reporting */
3424 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3426 case 'a': /* HPR: move right N cols */
3427 compatibility(ANSI);
3429 case 'C': /* CUF: Cursor right */
3430 move(term, term->curs.x + def(term->esc_args[0], 1),
3432 seen_disp_event(term);
3434 case 'D': /* CUB: move left N cols */
3435 move(term, term->curs.x - def(term->esc_args[0], 1),
3437 seen_disp_event(term);
3439 case 'E': /* CNL: move down N lines and CR */
3440 compatibility(ANSI);
3442 term->curs.y + def(term->esc_args[0], 1), 1);
3443 seen_disp_event(term);
3445 case 'F': /* CPL: move up N lines and CR */
3446 compatibility(ANSI);
3448 term->curs.y - def(term->esc_args[0], 1), 1);
3449 seen_disp_event(term);
3452 case '`': /* HPA: set horizontal posn */
3453 compatibility(ANSI);
3454 move(term, def(term->esc_args[0], 1) - 1,
3456 seen_disp_event(term);
3458 case 'd': /* VPA: set vertical posn */
3459 compatibility(ANSI);
3460 move(term, term->curs.x,
3461 ((term->dec_om ? term->marg_t : 0) +
3462 def(term->esc_args[0], 1) - 1),
3463 (term->dec_om ? 2 : 0));
3464 seen_disp_event(term);
3467 case 'f': /* HVP: set horz and vert posns at once */
3468 if (term->esc_nargs < 2)
3469 term->esc_args[1] = ARG_DEFAULT;
3470 move(term, def(term->esc_args[1], 1) - 1,
3471 ((term->dec_om ? term->marg_t : 0) +
3472 def(term->esc_args[0], 1) - 1),
3473 (term->dec_om ? 2 : 0));
3474 seen_disp_event(term);
3476 case 'J': /* ED: erase screen or parts of it */
3478 unsigned int i = def(term->esc_args[0], 0);
3480 /* Erase Saved Lines (xterm)
3481 * This follows Thomas Dickey's xterm. */
3487 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3491 seen_disp_event(term);
3493 case 'K': /* EL: erase line or parts of it */
3495 unsigned int i = def(term->esc_args[0], 0) + 1;
3498 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3500 seen_disp_event(term);
3502 case 'L': /* IL: insert lines */
3503 compatibility(VT102);
3504 if (term->curs.y <= term->marg_b)
3505 scroll(term, term->curs.y, term->marg_b,
3506 -def(term->esc_args[0], 1), FALSE);
3507 seen_disp_event(term);
3509 case 'M': /* DL: delete lines */
3510 compatibility(VT102);
3511 if (term->curs.y <= term->marg_b)
3512 scroll(term, term->curs.y, term->marg_b,
3513 def(term->esc_args[0], 1),
3515 seen_disp_event(term);
3517 case '@': /* ICH: insert chars */
3518 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3519 compatibility(VT102);
3520 insch(term, def(term->esc_args[0], 1));
3521 seen_disp_event(term);
3523 case 'P': /* DCH: delete chars */
3524 compatibility(VT102);
3525 insch(term, -def(term->esc_args[0], 1));
3526 seen_disp_event(term);
3528 case 'c': /* DA: terminal type query */
3529 compatibility(VT100);
3530 /* This is the response for a VT102 */
3532 ldisc_send(term->ldisc, term->id_string,
3533 strlen(term->id_string), 0);
3535 case 'n': /* DSR: cursor position query */
3537 if (term->esc_args[0] == 6) {
3539 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3541 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3542 } else if (term->esc_args[0] == 5) {
3543 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3547 case 'h': /* SM: toggle modes to high */
3549 compatibility(VT100);
3552 for (i = 0; i < term->esc_nargs; i++)
3553 toggle_mode(term, term->esc_args[i],
3554 term->esc_query, TRUE);
3557 case 'i': /* MC: Media copy */
3559 compatibility(VT100);
3562 if (term->esc_nargs != 1) break;
3563 if (term->esc_args[0] == 5 &&
3564 (printer = conf_get_str(term->conf,
3565 CONF_printer))[0]) {
3566 term->printing = TRUE;
3567 term->only_printing = !term->esc_query;
3568 term->print_state = 0;
3569 term_print_setup(term, printer);
3570 } else if (term->esc_args[0] == 4 &&
3572 term_print_finish(term);
3576 case 'l': /* RM: toggle modes to low */
3578 compatibility(VT100);
3581 for (i = 0; i < term->esc_nargs; i++)
3582 toggle_mode(term, term->esc_args[i],
3583 term->esc_query, FALSE);
3586 case 'g': /* TBC: clear tabs */
3587 compatibility(VT100);
3588 if (term->esc_nargs == 1) {
3589 if (term->esc_args[0] == 0) {
3590 term->tabs[term->curs.x] = FALSE;
3591 } else if (term->esc_args[0] == 3) {
3593 for (i = 0; i < term->cols; i++)
3594 term->tabs[i] = FALSE;
3598 case 'r': /* DECSTBM: set scroll margins */
3599 compatibility(VT100);
3600 if (term->esc_nargs <= 2) {
3602 top = def(term->esc_args[0], 1) - 1;
3603 bot = (term->esc_nargs <= 1
3604 || term->esc_args[1] == 0 ?
3606 def(term->esc_args[1], term->rows)) - 1;
3607 if (bot >= term->rows)
3608 bot = term->rows - 1;
3609 /* VTTEST Bug 9 - if region is less than 2 lines
3610 * don't change region.
3612 if (bot - top > 0) {
3617 * I used to think the cursor should be
3618 * placed at the top of the newly marginned
3619 * area. Apparently not: VMS TPU falls over
3622 * Well actually it should for
3625 term->curs.y = (term->dec_om ?
3627 seen_disp_event(term);
3631 case 'm': /* SGR: set graphics rendition */
3634 * A VT100 without the AVO only had one
3635 * attribute, either underline or
3636 * reverse video depending on the
3637 * cursor type, this was selected by
3641 * This is sometimes DIM, eg on the
3644 * This is sometimes INVIS various ANSI.
3646 * This like 22 disables BOLD, DIM and INVIS
3648 * The ANSI colours appear on any
3649 * terminal that has colour (obviously)
3650 * but the interaction between sgr0 and
3651 * the colours varies but is usually
3652 * related to the background colour
3653 * erase item. The interaction between
3654 * colour attributes and the mono ones
3655 * is also very implementation
3658 * The 39 and 49 attributes are likely
3659 * to be unimplemented.
3662 for (i = 0; i < term->esc_nargs; i++) {
3663 switch (def(term->esc_args[i], 0)) {
3664 case 0: /* restore defaults */
3665 term->curr_attr = term->default_attr;
3667 case 1: /* enable bold */
3668 compatibility(VT100AVO);
3669 term->curr_attr |= ATTR_BOLD;
3671 case 21: /* (enable double underline) */
3672 compatibility(OTHER);
3673 case 4: /* enable underline */
3674 compatibility(VT100AVO);
3675 term->curr_attr |= ATTR_UNDER;
3677 case 5: /* enable blink */
3678 compatibility(VT100AVO);
3679 term->curr_attr |= ATTR_BLINK;
3681 case 6: /* SCO light bkgrd */
3682 compatibility(SCOANSI);
3683 term->blink_is_real = FALSE;
3684 term->curr_attr |= ATTR_BLINK;
3685 term_schedule_tblink(term);
3687 case 7: /* enable reverse video */
3688 term->curr_attr |= ATTR_REVERSE;
3690 case 10: /* SCO acs off */
3691 compatibility(SCOANSI);
3692 if (term->no_remote_charset) break;
3693 term->sco_acs = 0; break;
3694 case 11: /* SCO acs on */
3695 compatibility(SCOANSI);
3696 if (term->no_remote_charset) break;
3697 term->sco_acs = 1; break;
3698 case 12: /* SCO acs on, |0x80 */
3699 compatibility(SCOANSI);
3700 if (term->no_remote_charset) break;
3701 term->sco_acs = 2; break;
3702 case 22: /* disable bold */
3703 compatibility2(OTHER, VT220);
3704 term->curr_attr &= ~ATTR_BOLD;
3706 case 24: /* disable underline */
3707 compatibility2(OTHER, VT220);
3708 term->curr_attr &= ~ATTR_UNDER;
3710 case 25: /* disable blink */
3711 compatibility2(OTHER, VT220);
3712 term->curr_attr &= ~ATTR_BLINK;
3714 case 27: /* disable reverse video */
3715 compatibility2(OTHER, VT220);
3716 term->curr_attr &= ~ATTR_REVERSE;
3727 term->curr_attr &= ~ATTR_FGMASK;
3729 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3739 /* aixterm-style bright foreground */
3740 term->curr_attr &= ~ATTR_FGMASK;
3742 ((term->esc_args[i] - 90 + 8)
3745 case 39: /* default-foreground */
3746 term->curr_attr &= ~ATTR_FGMASK;
3747 term->curr_attr |= ATTR_DEFFG;
3758 term->curr_attr &= ~ATTR_BGMASK;
3760 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3770 /* aixterm-style bright background */
3771 term->curr_attr &= ~ATTR_BGMASK;
3773 ((term->esc_args[i] - 100 + 8)
3776 case 49: /* default-background */
3777 term->curr_attr &= ~ATTR_BGMASK;
3778 term->curr_attr |= ATTR_DEFBG;
3780 case 38: /* xterm 256-colour mode */
3781 if (i+2 < term->esc_nargs &&
3782 term->esc_args[i+1] == 5) {
3783 term->curr_attr &= ~ATTR_FGMASK;
3785 ((term->esc_args[i+2] & 0xFF)
3790 case 48: /* xterm 256-colour mode */
3791 if (i+2 < term->esc_nargs &&
3792 term->esc_args[i+1] == 5) {
3793 term->curr_attr &= ~ATTR_BGMASK;
3795 ((term->esc_args[i+2] & 0xFF)
3802 set_erase_char(term);
3805 case 's': /* save cursor */
3806 save_cursor(term, TRUE);
3808 case 'u': /* restore cursor */
3809 save_cursor(term, FALSE);
3810 seen_disp_event(term);
3812 case 't': /* DECSLPP: set page size - ie window height */
3814 * VT340/VT420 sequence DECSLPP, DEC only allows values
3815 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3816 * illegal values (eg first arg 1..9) for window changing
3819 if (term->esc_nargs <= 1
3820 && (term->esc_args[0] < 1 ||
3821 term->esc_args[0] >= 24)) {
3822 compatibility(VT340TEXT);
3823 if (!term->no_remote_resize)
3824 request_resize(term->frontend, term->cols,
3825 def(term->esc_args[0], 24));
3827 } else if (term->esc_nargs >= 1 &&
3828 term->esc_args[0] >= 1 &&
3829 term->esc_args[0] < 24) {
3830 compatibility(OTHER);
3832 switch (term->esc_args[0]) {
3836 set_iconic(term->frontend, FALSE);
3839 set_iconic(term->frontend, TRUE);
3842 if (term->esc_nargs >= 3) {
3843 if (!term->no_remote_resize)
3844 move_window(term->frontend,
3845 def(term->esc_args[1], 0),
3846 def(term->esc_args[2], 0));
3850 /* We should resize the window to a given
3851 * size in pixels here, but currently our
3852 * resizing code isn't healthy enough to
3857 set_zorder(term->frontend, TRUE);
3860 /* move to bottom */
3861 set_zorder(term->frontend, FALSE);
3864 refresh_window(term->frontend);
3867 if (term->esc_nargs >= 3) {
3868 if (!term->no_remote_resize)
3869 request_resize(term->frontend,
3870 def(term->esc_args[2], term->conf_width),
3871 def(term->esc_args[1], term->conf_height));
3875 if (term->esc_nargs >= 2)
3876 set_zoomed(term->frontend,
3882 ldisc_send(term->ldisc,
3883 is_iconic(term->frontend) ?
3884 "\033[2t" : "\033[1t", 4, 0);
3888 get_window_pos(term->frontend, &x, &y);
3889 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3890 ldisc_send(term->ldisc, buf, len, 0);
3895 get_window_pixels(term->frontend, &x, &y);
3896 len = sprintf(buf, "\033[4;%d;%dt", y, x);
3897 ldisc_send(term->ldisc, buf, len, 0);
3902 len = sprintf(buf, "\033[8;%d;%dt",
3903 term->rows, term->cols);
3904 ldisc_send(term->ldisc, buf, len, 0);
3909 * Hmmm. Strictly speaking we
3910 * should return `the size of the
3911 * screen in characters', but
3912 * that's not easy: (a) window
3913 * furniture being what it is it's
3914 * hard to compute, and (b) in
3915 * resize-font mode maximising the
3916 * window wouldn't change the
3917 * number of characters. *shrug*. I
3918 * think we'll ignore it for the
3919 * moment and see if anyone
3920 * complains, and then ask them
3921 * what they would like it to do.
3926 term->remote_qtitle_action != TITLE_NONE) {
3927 if(term->remote_qtitle_action == TITLE_REAL)
3928 p = get_window_title(term->frontend, TRUE);
3930 p = EMPTY_WINDOW_TITLE;
3932 ldisc_send(term->ldisc, "\033]L", 3, 0);
3933 ldisc_send(term->ldisc, p, len, 0);
3934 ldisc_send(term->ldisc, "\033\\", 2, 0);
3939 term->remote_qtitle_action != TITLE_NONE) {
3940 if(term->remote_qtitle_action == TITLE_REAL)
3941 p = get_window_title(term->frontend, FALSE);
3943 p = EMPTY_WINDOW_TITLE;
3945 ldisc_send(term->ldisc, "\033]l", 3, 0);
3946 ldisc_send(term->ldisc, p, len, 0);
3947 ldisc_send(term->ldisc, "\033\\", 2, 0);
3953 case 'S': /* SU: Scroll up */
3954 compatibility(SCOANSI);
3955 scroll(term, term->marg_t, term->marg_b,
3956 def(term->esc_args[0], 1), TRUE);
3957 term->wrapnext = FALSE;
3958 seen_disp_event(term);
3960 case 'T': /* SD: Scroll down */
3961 compatibility(SCOANSI);
3962 scroll(term, term->marg_t, term->marg_b,
3963 -def(term->esc_args[0], 1), TRUE);
3964 term->wrapnext = FALSE;
3965 seen_disp_event(term);
3967 case ANSI('|', '*'): /* DECSNLS */
3969 * Set number of lines on screen
3970 * VT420 uses VGA like hardware and can
3971 * support any size in reasonable range
3972 * (24..49 AIUI) with no default specified.
3974 compatibility(VT420);
3975 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3976 if (!term->no_remote_resize)
3977 request_resize(term->frontend, term->cols,
3978 def(term->esc_args[0],
3979 term->conf_height));
3983 case ANSI('|', '$'): /* DECSCPP */
3985 * Set number of columns per page
3986 * Docs imply range is only 80 or 132, but
3989 compatibility(VT340TEXT);
3990 if (term->esc_nargs <= 1) {
3991 if (!term->no_remote_resize)
3992 request_resize(term->frontend,
3993 def(term->esc_args[0],
3999 case 'X': /* ECH: write N spaces w/o moving cursor */
4000 /* XXX VTTEST says this is vt220, vt510 manual
4002 compatibility(ANSIMIN);
4004 int n = def(term->esc_args[0], 1);
4006 int p = term->curs.x;
4007 termline *cline = scrlineptr(term->curs.y);
4009 if (n > term->cols - term->curs.x)
4010 n = term->cols - term->curs.x;
4011 cursplus = term->curs;
4013 check_boundary(term, term->curs.x, term->curs.y);
4014 check_boundary(term, term->curs.x+n, term->curs.y);
4015 check_selection(term, term->curs, cursplus);
4017 copy_termchar(cline, p++,
4019 seen_disp_event(term);
4022 case 'x': /* DECREQTPARM: report terminal characteristics */
4023 compatibility(VT100);
4026 int i = def(term->esc_args[0], 0);
4027 if (i == 0 || i == 1) {
4028 strcpy(buf, "\033[2;1;1;112;112;1;0x");
4030 ldisc_send(term->ldisc, buf, 20, 0);
4035 compatibility(OTHER);
4037 int i = def(term->esc_args[0], 1);
4038 pos old_curs = term->curs;
4040 for(;i>0 && term->curs.x>0; i--) {
4043 } while (term->curs.x >0 &&
4044 !term->tabs[term->curs.x]);
4046 check_selection(term, old_curs, term->curs);
4049 case ANSI('c', '='): /* Hide or Show Cursor */
4050 compatibility(SCOANSI);
4051 switch(term->esc_args[0]) {
4052 case 0: /* hide cursor */
4053 term->cursor_on = FALSE;
4055 case 1: /* restore cursor */
4056 term->big_cursor = FALSE;
4057 term->cursor_on = TRUE;
4059 case 2: /* block cursor */
4060 term->big_cursor = TRUE;
4061 term->cursor_on = TRUE;
4065 case ANSI('C', '='):
4067 * set cursor start on scanline esc_args[0] and
4068 * end on scanline esc_args[1].If you set
4069 * the bottom scan line to a value less than
4070 * the top scan line, the cursor will disappear.
4072 compatibility(SCOANSI);
4073 if (term->esc_nargs >= 2) {
4074 if (term->esc_args[0] > term->esc_args[1])
4075 term->cursor_on = FALSE;
4077 term->cursor_on = TRUE;
4080 case ANSI('D', '='):
4081 compatibility(SCOANSI);
4082 term->blink_is_real = FALSE;
4083 term_schedule_tblink(term);
4084 if (term->esc_args[0]>=1)
4085 term->curr_attr |= ATTR_BLINK;
4087 term->curr_attr &= ~ATTR_BLINK;
4089 case ANSI('E', '='):
4090 compatibility(SCOANSI);
4091 term->blink_is_real = (term->esc_args[0] >= 1);
4092 term_schedule_tblink(term);
4094 case ANSI('F', '='): /* set normal foreground */
4095 compatibility(SCOANSI);
4096 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
4098 (sco2ansicolour[term->esc_args[0] & 0x7] |
4099 (term->esc_args[0] & 0x8)) <<
4101 term->curr_attr &= ~ATTR_FGMASK;
4102 term->curr_attr |= colour;
4103 term->default_attr &= ~ATTR_FGMASK;
4104 term->default_attr |= colour;
4105 set_erase_char(term);
4108 case ANSI('G', '='): /* set normal background */
4109 compatibility(SCOANSI);
4110 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
4112 (sco2ansicolour[term->esc_args[0] & 0x7] |
4113 (term->esc_args[0] & 0x8)) <<
4115 term->curr_attr &= ~ATTR_BGMASK;
4116 term->curr_attr |= colour;
4117 term->default_attr &= ~ATTR_BGMASK;
4118 term->default_attr |= colour;
4119 set_erase_char(term);
4122 case ANSI('L', '='):
4123 compatibility(SCOANSI);
4124 term->use_bce = (term->esc_args[0] <= 0);
4125 set_erase_char(term);
4127 case ANSI('p', '"'): /* DECSCL: set compat level */
4129 * Allow the host to make this emulator a
4130 * 'perfect' VT102. This first appeared in
4131 * the VT220, but we do need to get back to
4132 * PuTTY mode so I won't check it.
4134 * The arg in 40..42,50 are a PuTTY extension.
4135 * The 2nd arg, 8bit vs 7bit is not checked.
4137 * Setting VT102 mode should also change
4138 * the Fkeys to generate PF* codes as a
4139 * real VT102 has no Fkeys. The VT220 does
4140 * this, F11..F13 become ESC,BS,LF other
4141 * Fkeys send nothing.
4143 * Note ESC c will NOT change this!
4146 switch (term->esc_args[0]) {
4148 term->compatibility_level &= ~TM_VTXXX;
4149 term->compatibility_level |= TM_VT102;
4152 term->compatibility_level &= ~TM_VTXXX;
4153 term->compatibility_level |= TM_VT220;
4157 if (term->esc_args[0] > 60 &&
4158 term->esc_args[0] < 70)
4159 term->compatibility_level |= TM_VTXXX;
4163 term->compatibility_level &= TM_VTXXX;
4166 term->compatibility_level = TM_PUTTY;
4169 term->compatibility_level = TM_SCOANSI;
4173 term->compatibility_level = TM_PUTTY;
4179 /* Change the response to CSI c */
4180 if (term->esc_args[0] == 50) {
4183 strcpy(term->id_string, "\033[?");
4184 for (i = 1; i < term->esc_nargs; i++) {
4186 strcat(term->id_string, ";");
4187 sprintf(lbuf, "%d", term->esc_args[i]);
4188 strcat(term->id_string, lbuf);
4190 strcat(term->id_string, "c");
4193 /* Is this a good idea ?
4194 * Well we should do a soft reset at this point ...
4196 if (!has_compat(VT420) && has_compat(VT100)) {
4197 if (!term->no_remote_resize) {
4198 if (term->reset_132)
4199 request_resize(132, 24);
4201 request_resize(80, 24);
4209 term->osc_w = FALSE;
4211 case 'P': /* Linux palette sequence */
4212 term->termstate = SEEN_OSC_P;
4213 term->osc_strlen = 0;
4215 case 'R': /* Linux palette reset */
4216 palette_reset(term->frontend);
4217 term_invalidate(term);
4218 term->termstate = TOPLEVEL;
4220 case 'W': /* word-set */
4221 term->termstate = SEEN_OSC_W;
4234 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4238 * Grotty hack to support xterm and DECterm title
4239 * sequences concurrently.
4241 if (term->esc_args[0] == 2) {
4242 term->esc_args[0] = 1;
4245 /* else fall through */
4247 term->termstate = OSC_STRING;
4248 term->osc_strlen = 0;
4253 * This OSC stuff is EVIL. It takes just one character to get into
4254 * sysline mode and it's not initially obvious how to get out.
4255 * So I've added CR and LF as string aborts.
4256 * This shouldn't effect compatibility as I believe embedded
4257 * control characters are supposed to be interpreted (maybe?)
4258 * and they don't display anything useful anyway.
4262 if (c == '\012' || c == '\015') {
4263 term->termstate = TOPLEVEL;
4264 } else if (c == 0234 || c == '\007') {
4266 * These characters terminate the string; ST and BEL
4267 * terminate the sequence and trigger instant
4268 * processing of it, whereas ESC goes back to SEEN_ESC
4269 * mode unless it is followed by \, in which case it is
4270 * synonymous with ST in the first place.
4273 term->termstate = TOPLEVEL;
4274 } else if (c == '\033')
4275 term->termstate = OSC_MAYBE_ST;
4276 else if (term->osc_strlen < OSC_STR_MAX)
4277 term->osc_string[term->osc_strlen++] = (char)c;
4281 int max = (term->osc_strlen == 0 ? 21 : 15);
4283 if ((int)c >= '0' && (int)c <= '9')
4285 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4287 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4290 term->termstate = TOPLEVEL;
4293 term->osc_string[term->osc_strlen++] = val;
4294 if (term->osc_strlen >= 7) {
4295 palette_set(term->frontend, term->osc_string[0],
4296 term->osc_string[1] * 16 + term->osc_string[2],
4297 term->osc_string[3] * 16 + term->osc_string[4],
4298 term->osc_string[5] * 16 + term->osc_string[6]);
4299 term_invalidate(term);
4300 term->termstate = TOPLEVEL;
4316 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4319 term->termstate = OSC_STRING;
4320 term->osc_strlen = 0;
4324 term->termstate = TOPLEVEL;
4325 seen_disp_event(term);
4328 move(term, term->curs.x, term->curs.y - 1, 1);
4331 move(term, term->curs.x, term->curs.y + 1, 1);
4334 move(term, term->curs.x + 1, term->curs.y, 1);
4337 move(term, term->curs.x - 1, term->curs.y, 1);
4340 * From the VT100 Manual
4341 * NOTE: The special graphics characters in the VT100
4342 * are different from those in the VT52
4344 * From VT102 manual:
4345 * 137 _ Blank - Same
4346 * 140 ` Reserved - Humm.
4347 * 141 a Solid rectangle - Similar
4348 * 142 b 1/ - Top half of fraction for the
4349 * 143 c 3/ - subscript numbers below.
4352 * 146 f Degrees - Same
4353 * 147 g Plus or minus - Same
4355 * 151 i Ellipsis (dots)
4358 * 154 l Bar at scan 0
4359 * 155 m Bar at scan 1
4360 * 156 n Bar at scan 2
4361 * 157 o Bar at scan 3 - Similar
4362 * 160 p Bar at scan 4 - Similar
4363 * 161 q Bar at scan 5 - Similar
4364 * 162 r Bar at scan 6 - Same
4365 * 163 s Bar at scan 7 - Similar
4380 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4383 term->cset_attr[term->cset = 0] = CSET_ASCII;
4386 move(term, 0, 0, 0);
4389 if (term->curs.y == 0)
4390 scroll(term, 0, term->rows - 1, -1, TRUE);
4391 else if (term->curs.y > 0)
4393 term->wrapnext = FALSE;
4396 erase_lots(term, FALSE, FALSE, TRUE);
4400 erase_lots(term, TRUE, FALSE, TRUE);
4404 /* XXX Print cursor line */
4407 /* XXX Start controller mode */
4410 /* XXX Stop controller mode */
4414 term->termstate = VT52_Y1;
4418 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4421 term->app_keypad_keys = TRUE;
4424 term->app_keypad_keys = FALSE;
4427 /* XXX This should switch to VT100 mode not current or default
4428 * VT mode. But this will only have effect in a VT220+
4431 term->vt52_mode = FALSE;
4432 term->blink_is_real = term->blinktext;
4433 term_schedule_tblink(term);
4437 /* XXX Enter auto print mode */
4440 /* XXX Exit auto print mode */
4443 /* XXX Print screen */
4449 /* compatibility(ATARI) */
4450 move(term, 0, 0, 0);
4451 erase_lots(term, FALSE, FALSE, TRUE);
4455 /* compatibility(ATARI) */
4456 if (term->curs.y <= term->marg_b)
4457 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4460 /* compatibility(ATARI) */
4461 if (term->curs.y <= term->marg_b)
4462 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4465 /* compatibility(ATARI) */
4466 term->termstate = VT52_FG;
4469 /* compatibility(ATARI) */
4470 term->termstate = VT52_BG;
4473 /* compatibility(ATARI) */
4474 erase_lots(term, FALSE, TRUE, FALSE);
4478 /* compatibility(ATARI) */
4479 term->cursor_on = TRUE;
4482 /* compatibility(ATARI) */
4483 term->cursor_on = FALSE;
4485 /* case 'j': Save cursor position - broken on ST */
4486 /* case 'k': Restore cursor position */
4488 /* compatibility(ATARI) */
4489 erase_lots(term, TRUE, TRUE, TRUE);
4491 term->wrapnext = FALSE;
4494 /* compatibility(ATARI) */
4495 erase_lots(term, TRUE, TRUE, FALSE);
4498 /* compatibility(ATARI) */
4499 term->curr_attr |= ATTR_REVERSE;
4502 /* compatibility(ATARI) */
4503 term->curr_attr &= ~ATTR_REVERSE;
4505 case 'v': /* wrap Autowrap on - Wyse style */
4506 /* compatibility(ATARI) */
4509 case 'w': /* Autowrap off */
4510 /* compatibility(ATARI) */
4515 /* compatibility(OTHER) */
4516 term->vt52_bold = FALSE;
4517 term->curr_attr = ATTR_DEFAULT;
4518 set_erase_char(term);
4521 /* compatibility(VI50) */
4522 term->curr_attr |= ATTR_UNDER;
4525 /* compatibility(VI50) */
4526 term->curr_attr &= ~ATTR_UNDER;
4529 /* compatibility(VI50) */
4530 term->vt52_bold = TRUE;
4531 term->curr_attr |= ATTR_BOLD;
4534 /* compatibility(VI50) */
4535 term->vt52_bold = FALSE;
4536 term->curr_attr &= ~ATTR_BOLD;
4542 term->termstate = VT52_Y2;
4543 move(term, term->curs.x, c - ' ', 0);
4546 term->termstate = TOPLEVEL;
4547 move(term, c - ' ', term->curs.y, 0);
4552 term->termstate = TOPLEVEL;
4553 term->curr_attr &= ~ATTR_FGMASK;
4554 term->curr_attr &= ~ATTR_BOLD;
4555 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4556 set_erase_char(term);
4559 term->termstate = TOPLEVEL;
4560 term->curr_attr &= ~ATTR_BGMASK;
4561 term->curr_attr &= ~ATTR_BLINK;
4562 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4563 set_erase_char(term);
4566 default: break; /* placate gcc warning about enum use */
4568 if (term->selstate != NO_SELECTION) {
4569 pos cursplus = term->curs;
4571 check_selection(term, term->curs, cursplus);
4575 term_print_flush(term);
4577 logflush(term->logctx);
4581 * To prevent having to run the reasonably tricky bidi algorithm
4582 * too many times, we maintain a cache of the last lineful of data
4583 * fed to the algorithm on each line of the display.
4585 static int term_bidi_cache_hit(Terminal *term, int line,
4586 termchar *lbefore, int width)
4590 if (!term->pre_bidi_cache)
4591 return FALSE; /* cache doesn't even exist yet! */
4593 if (line >= term->bidi_cache_size)
4594 return FALSE; /* cache doesn't have this many lines */
4596 if (!term->pre_bidi_cache[line].chars)
4597 return FALSE; /* cache doesn't contain _this_ line */
4599 if (term->pre_bidi_cache[line].width != width)
4600 return FALSE; /* line is wrong width */
4602 for (i = 0; i < width; i++)
4603 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4604 return FALSE; /* line doesn't match cache */
4606 return TRUE; /* it didn't match. */
4609 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4610 termchar *lafter, bidi_char *wcTo,
4611 int width, int size)
4615 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4616 int j = term->bidi_cache_size;
4617 term->bidi_cache_size = line+1;
4618 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4619 term->bidi_cache_size,
4620 struct bidi_cache_entry);
4621 term->post_bidi_cache = sresize(term->post_bidi_cache,
4622 term->bidi_cache_size,
4623 struct bidi_cache_entry);
4624 while (j < term->bidi_cache_size) {
4625 term->pre_bidi_cache[j].chars =
4626 term->post_bidi_cache[j].chars = NULL;
4627 term->pre_bidi_cache[j].width =
4628 term->post_bidi_cache[j].width = -1;
4629 term->pre_bidi_cache[j].forward =
4630 term->post_bidi_cache[j].forward = NULL;
4631 term->pre_bidi_cache[j].backward =
4632 term->post_bidi_cache[j].backward = NULL;
4637 sfree(term->pre_bidi_cache[line].chars);
4638 sfree(term->post_bidi_cache[line].chars);
4639 sfree(term->post_bidi_cache[line].forward);
4640 sfree(term->post_bidi_cache[line].backward);
4642 term->pre_bidi_cache[line].width = width;
4643 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4644 term->post_bidi_cache[line].width = width;
4645 term->post_bidi_cache[line].chars = snewn(size, termchar);
4646 term->post_bidi_cache[line].forward = snewn(width, int);
4647 term->post_bidi_cache[line].backward = snewn(width, int);
4649 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4650 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4651 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4652 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4654 for (i = 0; i < width; i++) {
4655 int p = wcTo[i].index;
4657 assert(0 <= p && p < width);
4659 term->post_bidi_cache[line].backward[i] = p;
4660 term->post_bidi_cache[line].forward[p] = i;
4665 * Prepare the bidi information for a screen line. Returns the
4666 * transformed list of termchars, or NULL if no transformation at
4667 * all took place (because bidi is disabled). If return was
4668 * non-NULL, auxiliary information such as the forward and reverse
4669 * mappings of permutation position are available in
4670 * term->post_bidi_cache[scr_y].*.
4672 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4678 /* Do Arabic shaping and bidi. */
4679 if(!term->bidi || !term->arabicshaping) {
4681 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4683 if (term->wcFromTo_size < term->cols) {
4684 term->wcFromTo_size = term->cols;
4685 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4687 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4691 for(it=0; it<term->cols ; it++)
4693 unsigned long uc = (ldata->chars[it].chr);
4695 switch (uc & CSET_MASK) {
4697 if (!term->rawcnp) {
4698 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4702 uc = term->ucsdata->unitab_line[uc & 0xFF];
4705 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4708 switch (uc & CSET_MASK) {
4710 uc = term->ucsdata->unitab_font[uc & 0xFF];
4713 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4717 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4719 term->wcFrom[it].index = it;
4723 do_bidi(term->wcFrom, term->cols);
4725 /* this is saved iff done from inside the shaping */
4726 if(!term->bidi && term->arabicshaping)
4727 for(it=0; it<term->cols; it++)
4728 term->wcTo[it] = term->wcFrom[it];
4730 if(!term->arabicshaping)
4731 do_shape(term->wcFrom, term->wcTo, term->cols);
4733 if (term->ltemp_size < ldata->size) {
4734 term->ltemp_size = ldata->size;
4735 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4739 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4741 for(it=0; it<term->cols ; it++)
4743 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4744 if (term->ltemp[it].cc_next)
4745 term->ltemp[it].cc_next -=
4746 it - term->wcTo[it].index;
4748 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4749 term->ltemp[it].chr = term->wcTo[it].wc;
4751 term_bidi_cache_store(term, scr_y, ldata->chars,
4752 term->ltemp, term->wcTo,
4753 term->cols, ldata->size);
4755 lchars = term->ltemp;
4757 lchars = term->post_bidi_cache[scr_y].chars;
4767 * Given a context, update the window. Out of paranoia, we don't
4768 * allow WM_PAINT responses to do scrolling optimisations.
4770 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4772 int i, j, our_curs_y, our_curs_x;
4777 #ifdef OPTIMISE_SCROLL
4778 struct scrollregion *sr;
4779 #endif /* OPTIMISE_SCROLL */
4783 ch = snewn(chlen, wchar_t);
4785 newline = snewn(term->cols, termchar);
4787 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4790 * screen array, disptop, scrtop,
4792 * blinkpc, blink_is_real, tblinker,
4793 * curs.y, curs.x, cblinker, blink_cur, cursor_on, has_focus, wrapnext
4796 /* Has the cursor position or type changed ? */
4797 if (term->cursor_on) {
4798 if (term->has_focus) {
4799 if (term->cblinker || !term->blink_cur)
4800 cursor = TATTR_ACTCURS;
4804 cursor = TATTR_PASCURS;
4806 cursor |= TATTR_RIGHTCURS;
4809 our_curs_y = term->curs.y - term->disptop;
4812 * Adjust the cursor position:
4814 * - in the case where it's resting on the right-hand half
4815 * of a CJK wide character. xterm's behaviour here,
4816 * which seems adequate to me, is to display the cursor
4817 * covering the _whole_ character, exactly as if it were
4818 * one space to the left.
4820 termline *ldata = lineptr(term->curs.y);
4823 our_curs_x = term->curs.x;
4825 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4826 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4828 lchars = ldata->chars;
4830 if (our_curs_x > 0 &&
4831 lchars[our_curs_x].chr == UCSWIDE)
4838 * If the cursor is not where it was last time we painted, and
4839 * its previous position is visible on screen, invalidate its
4840 * previous position.
4842 if (term->dispcursy >= 0 &&
4843 (term->curstype != cursor ||
4844 term->dispcursy != our_curs_y ||
4845 term->dispcursx != our_curs_x)) {
4846 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4849 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4850 dispcurs[-1].attr |= ATTR_INVALID;
4851 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4852 dispcurs[1].attr |= ATTR_INVALID;
4853 dispcurs->attr |= ATTR_INVALID;
4857 term->dispcursx = term->dispcursy = -1;
4859 #ifdef OPTIMISE_SCROLL
4861 sr = term->scrollhead;
4863 struct scrollregion *next = sr->next;
4864 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4868 term->scrollhead = term->scrolltail = NULL;
4869 #endif /* OPTIMISE_SCROLL */
4871 /* The normal screen data */
4872 for (i = 0; i < term->rows; i++) {
4875 int dirty_line, dirty_run, selected;
4876 unsigned long attr = 0, cset = 0;
4879 int last_run_dirty = 0;
4880 int laststart, dirtyrect;
4883 scrpos.y = i + term->disptop;
4884 ldata = lineptr(scrpos.y);
4886 /* Do Arabic shaping and bidi. */
4887 lchars = term_bidi_line(term, ldata, i);
4889 backward = term->post_bidi_cache[i].backward;
4891 lchars = ldata->chars;
4896 * First loop: work along the line deciding what we want
4897 * each character cell to look like.
4899 for (j = 0; j < term->cols; j++) {
4900 unsigned long tattr, tchar;
4901 termchar *d = lchars + j;
4902 scrpos.x = backward ? backward[j] : j;
4907 if (!term->ansi_colour)
4908 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4909 ATTR_DEFFG | ATTR_DEFBG;
4911 if (!term->xterm_256_colour) {
4913 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4914 if (colour >= 16 && colour < 256)
4915 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4916 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4917 if (colour >= 16 && colour < 256)
4918 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4921 switch (tchar & CSET_MASK) {
4923 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4926 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4929 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4932 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4935 /* Video reversing things */
4936 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4937 if (term->seltype == LEXICOGRAPHIC)
4938 selected = (posle(term->selstart, scrpos) &&
4939 poslt(scrpos, term->selend));
4941 selected = (posPle(term->selstart, scrpos) &&
4942 posPlt(scrpos, term->selend));
4946 ^ (selected ? ATTR_REVERSE : 0));
4948 /* 'Real' blinking ? */
4949 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4950 if (term->has_focus && term->tblinker) {
4951 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4953 tattr &= ~ATTR_BLINK;
4957 * Check the font we'll _probably_ be using to see if
4958 * the character is wide when we don't want it to be.
4960 if (tchar != term->disptext[i]->chars[j].chr ||
4961 tattr != (term->disptext[i]->chars[j].attr &~
4962 (ATTR_NARROW | DATTR_MASK))) {
4963 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4964 tattr |= ATTR_NARROW;
4965 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4966 tattr |= ATTR_NARROW;
4968 if (i == our_curs_y && j == our_curs_x) {
4970 term->curstype = cursor;
4971 term->dispcursx = j;
4972 term->dispcursy = i;
4976 newline[j].attr = tattr;
4977 newline[j].chr = tchar;
4978 /* Combining characters are still read from lchars */
4979 newline[j].cc_next = 0;
4983 * Now loop over the line again, noting where things have
4986 * During this loop, we keep track of where we last saw
4987 * DATTR_STARTRUN. Any mismatch automatically invalidates
4988 * _all_ of the containing run that was last printed: that
4989 * is, any rectangle that was drawn in one go in the
4990 * previous update should be either left completely alone
4991 * or overwritten in its entirety. This, along with the
4992 * expectation that front ends clip all text runs to their
4993 * bounding rectangle, should solve any possible problems
4994 * with fonts that overflow their character cells.
4998 for (j = 0; j < term->cols; j++) {
4999 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
5004 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
5005 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
5006 != newline[j].attr) {
5010 for (k = laststart; k < j; k++)
5011 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
5018 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5022 * Finally, loop once more and actually do the drawing.
5024 dirty_run = dirty_line = (ldata->lattr !=
5025 term->disptext[i]->lattr);
5026 term->disptext[i]->lattr = ldata->lattr;
5028 for (j = 0; j < term->cols; j++) {
5029 unsigned long tattr, tchar;
5030 int break_run, do_copy;
5031 termchar *d = lchars + j;
5033 tattr = newline[j].attr;
5034 tchar = newline[j].chr;
5036 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
5039 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
5041 #ifdef USES_VTLINE_HACK
5042 /* Special hack for VT100 Linedraw glyphs */
5043 if ((tchar >= 0x23BA && tchar <= 0x23BD) ||
5044 (j > 0 && (newline[j-1].chr >= 0x23BA &&
5045 newline[j-1].chr <= 0x23BD)))
5050 * Separate out sequences of characters that have the
5051 * same CSET, if that CSET is a magic one.
5053 if (CSET_OF(tchar) != cset)
5057 * Break on both sides of any combined-character cell.
5059 if (d->cc_next != 0 ||
5060 (j > 0 && d[-1].cc_next != 0))
5063 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
5064 if (term->disptext[i]->chars[j].chr == tchar &&
5065 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
5067 else if (!dirty_run && ccount == 1)
5072 if ((dirty_run || last_run_dirty) && ccount > 0) {
5073 do_text(ctx, start, i, ch, ccount, attr,
5075 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5076 do_cursor(ctx, start, i, ch, ccount, attr,
5082 cset = CSET_OF(tchar);
5083 if (term->ucsdata->dbcs_screenfont)
5084 last_run_dirty = dirty_run;
5085 dirty_run = dirty_line;
5089 if (!termchars_equal_override(&term->disptext[i]->chars[j],
5095 if (ccount+2 > chlen) {
5096 chlen = ccount + 256;
5097 ch = sresize(ch, chlen, wchar_t);
5100 #ifdef PLATFORM_IS_UTF16
5101 if (tchar > 0x10000 && tchar < 0x110000) {
5102 ch[ccount++] = (wchar_t) HIGH_SURROGATE_OF(tchar);
5103 ch[ccount++] = (wchar_t) LOW_SURROGATE_OF(tchar);
5105 #endif /* PLATFORM_IS_UTF16 */
5106 ch[ccount++] = (wchar_t) tchar;
5111 while (dd->cc_next) {
5112 unsigned long schar;
5117 switch (schar & CSET_MASK) {
5119 schar = term->ucsdata->unitab_line[schar & 0xFF];
5122 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
5125 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
5129 if (ccount+2 > chlen) {
5130 chlen = ccount + 256;
5131 ch = sresize(ch, chlen, wchar_t);
5134 #ifdef PLATFORM_IS_UTF16
5135 if (schar > 0x10000 && schar < 0x110000) {
5136 ch[ccount++] = (wchar_t) HIGH_SURROGATE_OF(schar);
5137 ch[ccount++] = (wchar_t) LOW_SURROGATE_OF(schar);
5139 #endif /* PLATFORM_IS_UTF16 */
5140 ch[ccount++] = (wchar_t) schar;
5143 attr |= TATTR_COMBINING;
5147 copy_termchar(term->disptext[i], j, d);
5148 term->disptext[i]->chars[j].chr = tchar;
5149 term->disptext[i]->chars[j].attr = tattr;
5151 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
5154 /* If it's a wide char step along to the next one. */
5155 if (tattr & ATTR_WIDE) {
5156 if (++j < term->cols) {
5159 * By construction above, the cursor should not
5160 * be on the right-hand half of this character.
5163 assert(!(i == our_curs_y && j == our_curs_x));
5164 if (!termchars_equal(&term->disptext[i]->chars[j], d))
5166 copy_termchar(term->disptext[i], j, d);
5170 if (dirty_run && ccount > 0) {
5171 do_text(ctx, start, i, ch, ccount, attr,
5173 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5174 do_cursor(ctx, start, i, ch, ccount, attr,
5186 * Invalidate the whole screen so it will be repainted in full.
5188 void term_invalidate(Terminal *term)
5192 for (i = 0; i < term->rows; i++)
5193 for (j = 0; j < term->cols; j++)
5194 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5196 term_schedule_update(term);
5200 * Paint the window in response to a WM_PAINT message.
5202 void term_paint(Terminal *term, Context ctx,
5203 int left, int top, int right, int bottom, int immediately)
5206 if (left < 0) left = 0;
5207 if (top < 0) top = 0;
5208 if (right >= term->cols) right = term->cols-1;
5209 if (bottom >= term->rows) bottom = term->rows-1;
5211 for (i = top; i <= bottom && i < term->rows; i++) {
5212 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
5213 for (j = left; j <= right && j < term->cols; j++)
5214 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5216 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
5217 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5221 do_paint (term, ctx, FALSE);
5223 term_schedule_update(term);
5228 * Attempt to scroll the scrollback. The second parameter gives the
5229 * position we want to scroll to; the first is +1 to denote that
5230 * this position is relative to the beginning of the scrollback, -1
5231 * to denote it is relative to the end, and 0 to denote that it is
5232 * relative to the current position.
5234 void term_scroll(Terminal *term, int rel, int where)
5236 int sbtop = -sblines(term);
5237 #ifdef OPTIMISE_SCROLL
5238 int olddisptop = term->disptop;
5240 #endif /* OPTIMISE_SCROLL */
5242 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5243 if (term->disptop < sbtop)
5244 term->disptop = sbtop;
5245 if (term->disptop > 0)
5248 #ifdef OPTIMISE_SCROLL
5249 shift = (term->disptop - olddisptop);
5250 if (shift < term->rows && shift > -term->rows)
5251 scroll_display(term, 0, term->rows - 1, shift);
5252 #endif /* OPTIMISE_SCROLL */
5257 * Scroll the scrollback to centre it on the beginning or end of the
5258 * current selection, if any.
5260 void term_scroll_to_selection(Terminal *term, int which_end)
5264 int sbtop = -sblines(term);
5266 if (term->selstate != SELECTED)
5269 target = term->selend;
5271 target = term->selstart;
5273 y = target.y - term->rows/2;
5278 term_scroll(term, -1, y);
5282 * Helper routine for clipme(): growing buffer.
5285 int buflen; /* amount of allocated space in textbuf/attrbuf */
5286 int bufpos; /* amount of actual data */
5287 wchar_t *textbuf; /* buffer for copied text */
5288 wchar_t *textptr; /* = textbuf + bufpos (current insertion point) */
5289 int *attrbuf; /* buffer for copied attributes */
5290 int *attrptr; /* = attrbuf + bufpos */
5293 static void clip_addchar(clip_workbuf *b, wchar_t chr, int attr)
5295 if (b->bufpos >= b->buflen) {
5297 b->textbuf = sresize(b->textbuf, b->buflen, wchar_t);
5298 b->textptr = b->textbuf + b->bufpos;
5299 b->attrbuf = sresize(b->attrbuf, b->buflen, int);
5300 b->attrptr = b->attrbuf + b->bufpos;
5302 *b->textptr++ = chr;
5303 *b->attrptr++ = attr;
5307 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5315 buf.textptr = buf.textbuf = snewn(buf.buflen, wchar_t);
5316 buf.attrptr = buf.attrbuf = snewn(buf.buflen, int);
5318 old_top_x = top.x; /* needed for rect==1 */
5320 while (poslt(top, bottom)) {
5322 termline *ldata = lineptr(top.y);
5326 * nlpos will point at the maximum position on this line we
5327 * should copy up to. So we start it at the end of the
5331 nlpos.x = term->cols;
5334 * ... move it backwards if there's unused space at the end
5335 * of the line (and also set `nl' if this is the case,
5336 * because in normal selection mode this means we need a
5337 * newline at the end)...
5339 if (!(ldata->lattr & LATTR_WRAPPED)) {
5341 IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5342 !ldata->chars[nlpos.x - 1].cc_next &&
5345 if (poslt(nlpos, bottom))
5347 } else if (ldata->lattr & LATTR_WRAPPED2) {
5348 /* Ignore the last char on the line in a WRAPPED2 line. */
5353 * ... and then clip it to the terminal x coordinate if
5354 * we're doing rectangular selection. (In this case we
5355 * still did the above, so that copying e.g. the right-hand
5356 * column from a table doesn't fill with spaces on the
5360 if (nlpos.x > bottom.x)
5362 nl = (top.y < bottom.y);
5365 while (poslt(top, bottom) && poslt(top, nlpos)) {
5368 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5370 wchar_t cbuf[16], *p;
5374 if (ldata->chars[x].chr == UCSWIDE) {
5380 int uc = ldata->chars[x].chr;
5381 attr = ldata->chars[x].attr;
5383 switch (uc & CSET_MASK) {
5385 if (!term->rawcnp) {
5386 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5390 uc = term->ucsdata->unitab_line[uc & 0xFF];
5393 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5396 switch (uc & CSET_MASK) {
5398 uc = term->ucsdata->unitab_font[uc & 0xFF];
5401 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5405 c = (uc & ~CSET_MASK);
5406 #ifdef PLATFORM_IS_UTF16
5407 if (uc > 0x10000 && uc < 0x110000) {
5408 cbuf[0] = 0xD800 | ((uc - 0x10000) >> 10);
5409 cbuf[1] = 0xDC00 | ((uc - 0x10000) & 0x3FF);
5418 if (DIRECT_FONT(uc)) {
5419 if (c >= ' ' && c != 0x7F) {
5423 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5425 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5426 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5430 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5434 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5441 for (p = cbuf; *p; p++)
5442 clip_addchar(&buf, *p, attr);
5444 if (ldata->chars[x].cc_next)
5445 x += ldata->chars[x].cc_next;
5453 for (i = 0; i < sel_nl_sz; i++)
5454 clip_addchar(&buf, sel_nl[i], 0);
5457 top.x = rect ? old_top_x : 0;
5461 #if SELECTION_NUL_TERMINATED
5462 clip_addchar(&buf, 0, 0);
5464 /* Finally, transfer all that to the clipboard. */
5465 write_clip(term->frontend, buf.textbuf, buf.attrbuf, buf.bufpos, desel);
5470 void term_copyall(Terminal *term)
5474 tree234 *screen = term->screen;
5475 top.y = -sblines(term);
5477 bottom.y = find_last_nonempty_line(term, screen);
5478 bottom.x = term->cols;
5479 clipme(term, top, bottom, 0, TRUE);
5483 * The wordness array is mainly for deciding the disposition of the
5484 * US-ASCII characters.
5486 static int wordtype(Terminal *term, int uc)
5489 int start, end, ctype;
5491 static const struct ucsword ucs_words[] = {
5497 0x037e, 0x037e, 1}, /* Greek question mark */
5499 0x0387, 0x0387, 1}, /* Greek ano teleia */
5501 0x055a, 0x055f, 1}, /* Armenian punctuation */
5503 0x0589, 0x0589, 1}, /* Armenian full stop */
5505 0x0700, 0x070d, 1}, /* Syriac punctuation */
5507 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5509 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5511 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5513 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5515 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5517 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5519 0x2000, 0x200a, 0}, /* Various spaces */
5521 0x2070, 0x207f, 2}, /* superscript */
5523 0x2080, 0x208f, 2}, /* subscript */
5525 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5527 0x3000, 0x3000, 0}, /* ideographic space */
5529 0x3001, 0x3020, 1}, /* ideographic punctuation */
5531 0x303f, 0x309f, 3}, /* Hiragana */
5533 0x30a0, 0x30ff, 3}, /* Katakana */
5535 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5537 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5539 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5541 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5543 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5545 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5547 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5549 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5551 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5555 const struct ucsword *wptr;
5557 switch (uc & CSET_MASK) {
5559 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5562 uc = term->ucsdata->unitab_line[uc & 0xFF];
5565 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5568 switch (uc & CSET_MASK) {
5570 uc = term->ucsdata->unitab_font[uc & 0xFF];
5573 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5577 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5578 * fail as there's such a thing as a double width space. :-(
5580 if (term->ucsdata->dbcs_screenfont &&
5581 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5585 return term->wordness[uc];
5587 for (wptr = ucs_words; wptr->start; wptr++) {
5588 if (uc >= wptr->start && uc <= wptr->end)
5596 * Spread the selection outwards according to the selection mode.
5598 static pos sel_spread_half(Terminal *term, pos p, int dir)
5602 int topy = -sblines(term);
5604 ldata = lineptr(p.y);
5606 switch (term->selmode) {
5609 * In this mode, every character is a separate unit, except
5610 * for runs of spaces at the end of a non-wrapping line.
5612 if (!(ldata->lattr & LATTR_WRAPPED)) {
5613 termchar *q = ldata->chars + term->cols;
5614 while (q > ldata->chars &&
5615 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5617 if (q == ldata->chars + term->cols)
5619 if (p.x >= q - ldata->chars)
5620 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5625 * In this mode, the units are maximal runs of characters
5626 * whose `wordness' has the same value.
5628 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5631 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5632 term->cols-1 : term->cols);
5633 if (p.x < maxcols-1) {
5634 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5639 if (p.y+1 < term->rows &&
5640 (ldata->lattr & LATTR_WRAPPED)) {
5642 ldata2 = lineptr(p.y+1);
5643 if (wordtype(term, UCSGET(ldata2->chars, 0))
5660 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5669 ldata2 = lineptr(p.y-1);
5670 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5671 term->cols-1 : term->cols);
5672 if (ldata2->lattr & LATTR_WRAPPED) {
5673 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5691 * In this mode, every line is a unit.
5693 p.x = (dir == -1 ? 0 : term->cols - 1);
5701 static void sel_spread(Terminal *term)
5703 if (term->seltype == LEXICOGRAPHIC) {
5704 term->selstart = sel_spread_half(term, term->selstart, -1);
5705 decpos(term->selend);
5706 term->selend = sel_spread_half(term, term->selend, +1);
5707 incpos(term->selend);
5711 static void term_resume_pasting(Terminal *term)
5713 expire_timer_context(&term->paste_timer_ctx);
5714 term_paste_queue(term, FALSE);
5717 static void term_paste_timing_callback(void *vterm, unsigned long now)
5719 Terminal *term = *(Terminal **)vterm;
5720 term_resume_pasting(term);
5723 static void term_paste_queue(Terminal *term, int timed)
5727 * Delay sending the rest of the paste buffer until we have
5728 * seen a newline coming back from the server (indicating that
5729 * it's absorbed the data we've sent so far). As a fallback,
5730 * continue sending anyway after a longish timeout.
5732 * We use the pointless structure field term->paste_timer_ctx
5733 * (which is a Terminal *, and we'll make sure it points
5734 * straight back to term) as our timer context, so that it can
5735 * be distinguished from term itself. That way, if we see a
5736 * reason to continue pasting before the timer goes off, we
5737 * can cancel just this timer and none of the other terminal
5738 * timers handling display updates, blinking text and cursor,
5741 term->paste_timer_ctx = term;
5742 schedule_timer(450, term_paste_timing_callback,
5743 &term->paste_timer_ctx);
5746 * Just arrange to call term_paste_callback from the top level
5747 * at the next opportunity.
5749 queue_toplevel_callback(term_paste_callback, term);
5753 static void term_paste_callback(void *vterm)
5755 Terminal *term = (Terminal *)vterm;
5757 if (term->paste_len == 0)
5760 while (term->paste_pos < term->paste_len) {
5762 while (n + term->paste_pos < term->paste_len) {
5763 if (term->paste_buffer[term->paste_pos + n++] == '\015')
5767 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
5768 term->paste_pos += n;
5770 if (term->paste_pos < term->paste_len) {
5771 term_paste_queue(term, TRUE);
5775 sfree(term->paste_buffer);
5776 term->paste_buffer = NULL;
5777 term->paste_len = 0;
5780 void term_do_paste(Terminal *term)
5785 get_clip(term->frontend, &data, &len);
5786 if (data && len > 0) {
5789 term_seen_key_event(term); /* pasted data counts */
5791 if (term->paste_buffer)
5792 sfree(term->paste_buffer);
5793 term->paste_pos = term->paste_len = 0;
5794 term->paste_buffer = snewn(len + 12, wchar_t);
5796 if (term->bracketed_paste) {
5797 memcpy(term->paste_buffer, L"\033[200~", 6 * sizeof(wchar_t));
5798 term->paste_len += 6;
5802 while (p < data + len) {
5803 while (p < data + len &&
5804 !(p <= data + len - sel_nl_sz &&
5805 !memcmp(p, sel_nl, sizeof(sel_nl))))
5810 for (i = 0; i < p - q; i++) {
5811 term->paste_buffer[term->paste_len++] = q[i];
5815 if (p <= data + len - sel_nl_sz &&
5816 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5817 term->paste_buffer[term->paste_len++] = '\015';
5823 if (term->bracketed_paste) {
5824 memcpy(term->paste_buffer + term->paste_len,
5825 L"\033[201~", 6 * sizeof(wchar_t));
5826 term->paste_len += 6;
5829 /* Assume a small paste will be OK in one go. */
5830 if (term->paste_len < 256) {
5832 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5833 if (term->paste_buffer)
5834 sfree(term->paste_buffer);
5835 term->paste_buffer = 0;
5836 term->paste_pos = term->paste_len = 0;
5839 get_clip(term->frontend, NULL, NULL);
5841 term_paste_queue(term, FALSE);
5844 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5845 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5849 int raw_mouse = (term->xterm_mouse &&
5850 !term->no_mouse_rep &&
5851 !(term->mouse_override && shift));
5852 int default_seltype;
5856 if (a == MA_DRAG && !raw_mouse)
5857 term_scroll(term, 0, -1);
5859 if (y >= term->rows) {
5861 if (a == MA_DRAG && !raw_mouse)
5862 term_scroll(term, 0, +1);
5871 if (x >= term->cols)
5874 selpoint.y = y + term->disptop;
5875 ldata = lineptr(selpoint.y);
5877 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5881 * Transform x through the bidi algorithm to find the _logical_
5882 * click point from the physical one.
5884 if (term_bidi_line(term, ldata, y) != NULL) {
5885 x = term->post_bidi_cache[y].backward[x];
5892 * If we're in the middle of a selection operation, we ignore raw
5893 * mouse mode until it's done (we must have been not in raw mouse
5894 * mode when it started).
5895 * This makes use of Shift for selection reliable, and avoids the
5896 * host seeing mouse releases for which they never saw corresponding
5900 (term->selstate != ABOUT_TO) && (term->selstate != DRAGGING)) {
5901 int encstate = 0, r, c;
5909 encstate = 0x00; /* left button down */
5920 case MBT_WHEEL_DOWN:
5923 default: break; /* placate gcc warning about enum use */
5927 if (term->xterm_mouse == 1)
5932 /* If multiple extensions are enabled, the xterm 1006 is used, so it's okay to check for only that */
5933 if (!term->xterm_extended_mouse)
5935 term->mouse_is_down = 0;
5938 if (term->mouse_is_down == braw)
5940 term->mouse_is_down = braw;
5942 default: break; /* placate gcc warning about enum use */
5951 /* Check the extensions in decreasing order of preference. Encoding the release event above assumes that 1006 comes first. */
5952 if (term->xterm_extended_mouse) {
5953 len = sprintf(abuf, "\033[<%d;%d;%d%c", encstate, c, r, a == MA_RELEASE ? 'm' : 'M');
5954 } else if (term->urxvt_extended_mouse) {
5955 len = sprintf(abuf, "\033[%d;%d;%dM", encstate + 32, c, r);
5956 } else if (c <= 223 && r <= 223) {
5957 len = sprintf(abuf, "\033[M%c%c%c", encstate + 32, c + 32, r + 32);
5959 ldisc_send(term->ldisc, abuf, len, 0);
5965 * Set the selection type (rectangular or normal) at the start
5966 * of a selection attempt, from the state of Alt.
5968 if (!alt ^ !term->rect_select)
5969 default_seltype = RECTANGULAR;
5971 default_seltype = LEXICOGRAPHIC;
5973 if (term->selstate == NO_SELECTION) {
5974 term->seltype = default_seltype;
5977 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5979 term->selstate = ABOUT_TO;
5980 term->seltype = default_seltype;
5981 term->selanchor = selpoint;
5982 term->selmode = SM_CHAR;
5983 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5985 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5986 term->selstate = DRAGGING;
5987 term->selstart = term->selanchor = selpoint;
5988 term->selend = term->selstart;
5989 incpos(term->selend);
5991 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5992 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5993 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5995 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5996 term->selstate == SELECTED) {
5997 if (term->seltype == LEXICOGRAPHIC) {
5999 * For normal selection, we extend by moving
6000 * whichever end of the current selection is closer
6003 if (posdiff(selpoint, term->selstart) <
6004 posdiff(term->selend, term->selstart) / 2) {
6005 term->selanchor = term->selend;
6006 decpos(term->selanchor);
6008 term->selanchor = term->selstart;
6012 * For rectangular selection, we have a choice of
6013 * _four_ places to put selanchor and selpoint: the
6014 * four corners of the selection.
6016 if (2*selpoint.x < term->selstart.x + term->selend.x)
6017 term->selanchor.x = term->selend.x-1;
6019 term->selanchor.x = term->selstart.x;
6021 if (2*selpoint.y < term->selstart.y + term->selend.y)
6022 term->selanchor.y = term->selend.y;
6024 term->selanchor.y = term->selstart.y;
6026 term->selstate = DRAGGING;
6028 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
6029 term->selanchor = selpoint;
6030 term->selstate = DRAGGING;
6031 if (term->seltype == LEXICOGRAPHIC) {
6033 * For normal selection, we set (selstart,selend) to
6034 * (selpoint,selanchor) in some order.
6036 if (poslt(selpoint, term->selanchor)) {
6037 term->selstart = selpoint;
6038 term->selend = term->selanchor;
6039 incpos(term->selend);
6041 term->selstart = term->selanchor;
6042 term->selend = selpoint;
6043 incpos(term->selend);
6047 * For rectangular selection, we may need to
6048 * interchange x and y coordinates (if the user has
6049 * dragged in the -x and +y directions, or vice versa).
6051 term->selstart.x = min(term->selanchor.x, selpoint.x);
6052 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
6053 term->selstart.y = min(term->selanchor.y, selpoint.y);
6054 term->selend.y = max(term->selanchor.y, selpoint.y);
6057 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
6059 if (term->selstate == DRAGGING) {
6061 * We've completed a selection. We now transfer the
6062 * data to the clipboard.
6064 clipme(term, term->selstart, term->selend,
6065 (term->seltype == RECTANGULAR), FALSE);
6066 term->selstate = SELECTED;
6068 term->selstate = NO_SELECTION;
6069 } else if (bcooked == MBT_PASTE
6071 #if MULTICLICK_ONLY_EVENT
6072 || a == MA_2CLK || a == MA_3CLK
6075 request_paste(term->frontend);
6079 * Since terminal output is suppressed during drag-selects, we
6080 * should make sure to write any pending output if one has just
6083 if (term->selstate != DRAGGING)
6088 int format_arrow_key(char *buf, Terminal *term, int xkey, int ctrl)
6092 if (term->vt52_mode)
6093 p += sprintf((char *) p, "\x1B%c", xkey);
6095 int app_flg = (term->app_cursor_keys && !term->no_applic_c);
6098 * RDB: VT100 & VT102 manuals both state the app cursor
6099 * keys only work if the app keypad is on.
6101 * SGT: That may well be true, but xterm disagrees and so
6102 * does at least one application, so I've #if'ed this out
6103 * and the behaviour is back to PuTTY's original: app
6104 * cursor and app keypad are independently switchable
6105 * modes. If anyone complains about _this_ I'll have to
6106 * put in a configurable option.
6108 if (!term->app_keypad_keys)
6111 /* Useful mapping of Ctrl-arrows */
6116 p += sprintf((char *) p, "\x1BO%c", xkey);
6118 p += sprintf((char *) p, "\x1B[%c", xkey);
6124 void term_nopaste(Terminal *term)
6126 if (term->paste_len == 0)
6128 expire_timer_context(&term->paste_timer_ctx);
6129 sfree(term->paste_buffer);
6130 term->paste_buffer = NULL;
6131 term->paste_len = 0;
6134 static void deselect(Terminal *term)
6136 term->selstate = NO_SELECTION;
6137 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6140 void term_deselect(Terminal *term)
6146 * Since terminal output is suppressed during drag-selects, we
6147 * should make sure to write any pending output if one has just
6150 if (term->selstate != DRAGGING)
6154 int term_ldisc(Terminal *term, int option)
6156 if (option == LD_ECHO)
6157 return term->term_echoing;
6158 if (option == LD_EDIT)
6159 return term->term_editing;
6163 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6165 bufchain_add(&term->inbuf, data, len);
6167 if (!term->in_term_out) {
6168 term->in_term_out = TRUE;
6169 term_reset_cblink(term);
6171 * During drag-selects, we do not process terminal input,
6172 * because the user will want the screen to hold still to
6175 if (term->selstate != DRAGGING)
6177 term->in_term_out = FALSE;
6181 * term_out() always completely empties inbuf. Therefore,
6182 * there's no reason at all to return anything other than zero
6183 * from this function, because there _can't_ be a question of
6184 * the remote side needing to wait until term_out() has cleared
6187 * This is a slightly suboptimal way to deal with SSH-2 - in
6188 * principle, the window mechanism would allow us to continue
6189 * to accept data on forwarded ports and X connections even
6190 * while the terminal processing was going slowly - but we
6191 * can't do the 100% right thing without moving the terminal
6192 * processing into a separate thread, and that might hurt
6193 * portability. So we manage stdout buffering the old SSH-1 way:
6194 * if the terminal processing goes slowly, the whole SSH
6195 * connection stops accepting data until it's ready.
6197 * In practice, I can't imagine this causing serious trouble.
6203 * Write untrusted data to the terminal.
6204 * The only control character that should be honoured is \n (which
6205 * will behave as a CRLF).
6207 int term_data_untrusted(Terminal *term, const char *data, int len)
6210 /* FIXME: more sophisticated checking? */
6211 for (i = 0; i < len; i++) {
6212 if (data[i] == '\n')
6213 term_data(term, 1, "\r\n", 2);
6214 else if (data[i] & 0x60)
6215 term_data(term, 1, data + i, 1);
6217 return 0; /* assumes that term_data() always returns 0 */
6220 void term_provide_logctx(Terminal *term, void *logctx)
6222 term->logctx = logctx;
6225 void term_set_focus(Terminal *term, int has_focus)
6227 term->has_focus = has_focus;
6228 term_schedule_cblink(term);
6232 * Provide "auto" settings for remote tty modes, suitable for an
6233 * application with a terminal window.
6235 char *term_get_ttymode(Terminal *term, const char *mode)
6238 if (strcmp(mode, "ERASE") == 0) {
6239 val = term->bksp_is_delete ? "^?" : "^H";
6241 /* FIXME: perhaps we should set ONLCR based on lfhascr as well? */
6242 /* FIXME: or ECHO and friends based on local echo state? */
6246 struct term_userpass_state {
6248 int done_prompt; /* printed out prompt yet? */
6249 size_t pos; /* cursor position */
6253 * Process some terminal data in the course of username/password
6256 int term_get_userpass_input(Terminal *term, prompts_t *p,
6257 unsigned char *in, int inlen)
6259 struct term_userpass_state *s = (struct term_userpass_state *)p->data;
6262 * First call. Set some stuff up.
6264 p->data = s = snew(struct term_userpass_state);
6267 /* We only print the `name' caption if we have to... */
6268 if (p->name_reqd && p->name) {
6269 size_t l = strlen(p->name);
6270 term_data_untrusted(term, p->name, l);
6271 if (p->name[l-1] != '\n')
6272 term_data_untrusted(term, "\n", 1);
6274 /* ...but we always print any `instruction'. */
6275 if (p->instruction) {
6276 size_t l = strlen(p->instruction);
6277 term_data_untrusted(term, p->instruction, l);
6278 if (p->instruction[l-1] != '\n')
6279 term_data_untrusted(term, "\n", 1);
6282 * Zero all the results, in case we abort half-way through.
6286 for (i = 0; i < (int)p->n_prompts; i++)
6287 prompt_set_result(p->prompts[i], "");
6291 while (s->curr_prompt < p->n_prompts) {
6293 prompt_t *pr = p->prompts[s->curr_prompt];
6294 int finished_prompt = 0;
6296 if (!s->done_prompt) {
6297 term_data_untrusted(term, pr->prompt, strlen(pr->prompt));
6302 /* Breaking out here ensures that the prompt is printed even
6303 * if we're now waiting for user data. */
6304 if (!in || !inlen) break;
6306 /* FIXME: should we be using local-line-editing code instead? */
6307 while (!finished_prompt && inlen) {
6313 term_data(term, 0, "\r\n", 2);
6314 prompt_ensure_result_size(pr, s->pos + 1);
6315 pr->result[s->pos] = '\0';
6316 /* go to next prompt, if any */
6319 finished_prompt = 1; /* break out */
6325 term_data(term, 0, "\b \b", 3);
6331 while (s->pos > 0) {
6333 term_data(term, 0, "\b \b", 3);
6339 /* Immediate abort. */
6340 term_data(term, 0, "\r\n", 2);
6343 return 0; /* user abort */
6346 * This simplistic check for printability is disabled
6347 * when we're doing password input, because some people
6348 * have control characters in their passwords.
6350 if (!pr->echo || (c >= ' ' && c <= '~') ||
6351 ((unsigned char) c >= 160)) {
6352 prompt_ensure_result_size(pr, s->pos + 1);
6353 pr->result[s->pos++] = c;
6355 term_data(term, 0, &c, 1);
6363 if (s->curr_prompt < p->n_prompts) {
6364 return -1; /* more data required */
6368 return +1; /* all done */